ML23114A373
| ML23114A373 | |
| Person / Time | |
|---|---|
| Site: | Westinghouse |
| Issue date: | 04/24/2023 |
| From: | Westinghouse |
| To: | Office of Nuclear Material Safety and Safeguards |
| Shared Package | |
| ML23114A358 | List: |
| References | |
| LTR-RAC-23-31 | |
| Download: ML23114A373 (1) | |
Text
{{#Wiki_filter:Remedial Investigation Report Appendix I Well Development Records AECOM
Well/Piez. ID: Well/Piezometer Development Record Client: Site Location: t_~f( ~:t\S,-,"> ~ <.. Project No: G,"<'t<C.. *(\ Date: "l -'t-, --Z..\ Developer: ~e,. ~T WELUPIEZOMETER DATA Well fl Piezorneter lg( ,, " Diameter __;,:_<-_ _ Material ---'?,_;,,i_c:._ Measuring Point Description ii'< I'>(.., (k-C?:- "> Geology at Screen Interval. (if known) Depth to Top of Screen (ft.)
-r \ , . C> Time of Water Level Measurement Depth to Bottom of Screen (ft.)
Total Well Depth (ft.) Calculate Purge Volume (gel.) Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID A Original Well Development (21.., Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Make Serial Number ( ,.::,s1--p.l e"~ ~ e:; 'i:I Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond Time Removed lnal T 0 (CIF) oH (umhos\ Turbiditv (NTUs' DO Color Odor Other I1-"10\ l ,o "Z-1., \ "Z>-\ "l A .; l&"l..& \ .1-<'.' ~~ .'\-I.
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Well/Piez. ID: Well/Piezometer Development Record Client: {µl.,-(.,-,c:,-l).w._£ Site Location: C,(~{ \1/4I.::'.,,.. 'l <; L Date: 1-Z.i.- 'Z-~ Developer:..:_.::,J,..=..._c,.,=~\1/2=c.e.,\l,o:::;::::;;a;-=.:,_---- WELUPIEZOMETER DATA Piezometer D Diameter __..,. ,, " _ __ Material _ _,fcclf..,C..~- Well~ Measuring Point Description -'II< ~ t !,r&:'.:, Geology at Screen Interval. (if known)
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- (12.'<>'-'- (poo e."' 'iS I\ ,;-ie, Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __
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A:COM Monitoring Well Development Log Page _l__ of _,_ Date Started (yr/mo/day) f. I "-i - I~ Date Completed (yr/mo/day) g. 1.!1 - '~ Total Well Depth (TWO)= -z_e, "i~ 11100ft Field Personnel J;r_ -.t:'--, L~~~ Depth to Ground Water (DGW) = ~
- i!> , 1/100 ft Site Name ~-~:'t\ ~ ~ ~ - ; : Length of Water Column (LWC) = TWO - DGW =---'-'ilce.*..8.;;__8~ - - - - - 1/100 ft Job # G,c,;q 4'(.. ~ '\ 1 Casing Volume (OCV) = LWC x 1 ( I,,~ = I. °t ~ gallons Well ID# \,.;> - C.. '\_ 5 Casing Volumes = 9, 7 gallons Upgradient Down gradient Method of Well Development _ ....~ - - - - - - - - - - - -
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A:COM Monitoring Well Development Log Page \ of \ Date Started (yr/mo/day) ~ , I>{ * ) tt Date Completed (yr/mo/day) ~ , I>-\,, \ '\ Total Well Depth (TWD) = ~\ .<\-Z.. 1/100 ft
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AS'COM Monitoring Well Development Log Page _ _\_ of _l_ Date Started (yr/mo/day) \ 'I:) ~ 3 " { '\ Date Completed (yr/mo/day) t t) -~ ~ ~ \ 'i, Total Well Depth (TWO) = \ c. '-{ . o o 1/100 ft Field Personnel ~~ \...:~ ~µ,--c--' Depth to Ground Water (DGW) = 1.. t;, ~ L\' 11100ft Site Name U Z y:::'::t::::?(s..,~-. £ Length of Water Column (LWC) =TWO - DGW = -, ~. '-\ I.,.. 1/100 ft Job# l=io-S<t.§{.;,--j q 1 Casing Volume (OCV) =LWC x * \ I,~ = \ '2. * '"'I' gallons Well ID# ~ 1, \ 5 Casing Volumes = jp '-\ gallons Upgradient Downgradient Method of Well Development 8~~~~-c, '>
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COMMENTS/OBSERVATIONS: Mon Well Dev Log-AECOM .xis
A:COM Monitoring Well Development Log Page \ of l Date Started (yr/mo/day) e>* t ', - J<=t Date Completed (yr/mo/day) g - l q- d Total Well Depth (TWO)= l -1.. '::\ i, 1/100 ft Field Personnel cJ~!!:e:!!:) l,;ciey~~ Depth to Ground Water (DGW) = S ,'4 '- 1/100 ft Site Name l..,..>~.:.;7,~~~_.'i£ Length of Water Column (LWC) = TWO* DGW = G,, ~ '- 1/100 ft Job#
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A:COM Monitoring Well Development Log Page_\_ of_\_ Date Started (yr/mo/day) i-1<\- \9, Date Completed (yr/mo/day) ~,l'\*1.C\. Total Well Depth (TWD) = /~. I C::::. 1/100 ft Field Personnel ~ ~ UA,.~ Depth to Ground Water (DGW) = ---~R.~'--"'--'--------- 1/100 ft
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AS'COM Monitoring Well Development Log Page _j_ of _I Date Started (yr/mo/day) '1- i~ ,,, 11 Date Completed (yr/mo/day) q.,z.~ .,<9 Total Well Depth (TWO) = >3.~, 1/100 ft Field Personnel JA.~"\ lf-4?.li~--(' 0 e pt h to Ground Water (DGW) = l ~,....~ 1/100 ft Site Name ~£~r:: &-1-'1:,c;.;,~ £. Length of Water Column (LWC) =TWD - DGW = Z fs lo\
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AS'COM Monitoring Well Development Log Page _J_ of _I_ Date Started (yr/mo/day) q, '2,1, 19 Date Completed (yr/mo/day) q,z..1_,, Total Well Depth (TWO)= \ ~ . (,o ~ 1/100 ft Field Personnel _J~ ~ l£ er ~I,,.,~ Depth to Ground Water (DGW) = \
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A:COM Monitoring Well Development Log Page_\_of.l._ Date Started (yr/mo/day) 8-19 ~ I q Date Completed (yr/mo/day) '& ,, I 9,
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COMMENTS/OBSERVATIONS: Mon Well Dev Log-AECOM .xis
AS'COM Monitoring Well Development Log Page \ of \ Date Started (yr/mo/day) C\. 1,.o, \ °t Date Completed (yr/mo/day) 9., -z_,,.. ~ \ <\ Total Well Depth (TWO) = \,S';~ O 1/100 ft Field Personnel ~ p.~ UA::>M:-~ Depth to Ground Water (DGW) = 9.,1'1 11100ft Site Name W£,<, ,J C::-- l).c..:,c.. E
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A.:COM Monitoring Well Development Log Page_\_ of ___i Date Started (yr/mo/day) q --Z.c. - 1"1 Date Completed (yr/mo/day) °'t-'Z ,~ Total Well Depth (TWO)= l~. I, o 1/100fl Field Personnel J;, . ~ . _ l£&.-r' >\)~ Depth to Ground Water (DGW) = 'j' .( C 1/100 fl Site Name w~.::;-c,~lY
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A:COM Monitoring Well Development Log Page_\_ of_\_ Date Started (yr/mo/day) B. - l't., l'1. Date Completed (yr/mo/day) S; \ '1. ~ \ C\. Total Well Depth (TWO)= \ :'(,] L 1/100 ft Field Personnel ~ lc?t\le,.~ Depth to Ground Water (DGW) = B.l~ 1/100 ft Site Name \~..,-C.S--~s,£, Length of Water Column (LWC) = TWO - DGW = _ _ _ '1.:.;'"-'-\_.~:;...__ _ _ __ 1/100 ft Job# ~ CC: ct_;~ '-{C\ 1 Casing Volume (OCV) = LWC x ~ = - - ~ \*~~-V~------ gallons Well ID# Lv "19. 5 Casing Volumes= ~ B~ gallons Upgradient Downgradient Method of Well Development l...)]..ew~ ~~ C: Weather Conditions ~- t\,~~ ::::t,:; Air Temperature <\) - "F Total Volume of Water Removed z I:> gallons Discharge Rate Volume Purged Water Temperature Specific Conductivity Sand Content Date/Time pH Eh Turbidity/Color Remarks
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AS'COM Monitoring Well Development Log Page_l_of _!_ Date Started (yr/mo/day) ~ * 'Z,,.;,- d Date Completed (yr/mo/day) S-'1,...c>- \ '\ Total Well Depth (TWO)= l 4 , "3 &.{ 11100ft Field Personnel ~ ~~ Depth to Ground Water (DGW) = l (. :z,6' 1/100 ft W~~c' (:=-' V,o..:ic,£ Length of Water Column (LWC) = TWO - DGW = Lo.\. l:>. ' , 1/100 ft Site Name
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AS'COM Monitoring Well Development Log Page _J_ of_)_
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1 Mon Well Dev Log-AEC OM .xis
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A=COM Monitoring Well Development Log Page ___.l_ of J:_ Date Started (yr/mo/day) 8-~ '\ Date Completed (yr/mo/day) i-1.o- ,C\ Total Well Depth (TWD) = 'Z.o. ~ 1.. 1/100 ft Field Personnel -lA~ ~ Depth to Ground Water (DGW) = 1. ~ 11100ft Site Name l,..)~*.,1 e,..~'-S<~ Length of Water Column (LWC) = TWD - DGW = l 1..( 1/100 ft Job# <...o(~.( ~ '"'- C\ 1 Casing Volume (OCV) = LWC x *I C.1 = 'Z . ~ "-\ gallons Well ID# U - 84 5 Casing Volumes= @ ~ l O . \ ~ gallons Upgradient Downgradient Method of Well Development k? \A,.~ ~ I,) ~ (
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COMMENTS/OBSERVATIONS: Mon Well Dev Log-AECOM .xis
AS'COM Monitoring Well Development Log Page
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A:COM Monitoring Well Development Log Page ___i_ of _L_ Date Started (yr/mo/day) t.,, I '1:- ,,, I 9: Date Completed (yr/mo/day) ~ ,, \ ~ .,,, \ C:, Total Well Depth (TWO) = -Z.. t .1..-Z... 1/100 fl Field Personnel J/IO ~ l.c1\.).Ar'\-,,< Depth to Ground Water (DGW) = '2.. \ * '--\ 1-\ 1/100 fl Site Name W>~<-;"(, y,> ~\I<~ ~ Length of Water Column (LWC) = TWO - DGW = _ _ _
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Mon Well Dev Log-AECOM .xis
A.:COM Monitoring Well Development Log Page
- I- of i Date Started (yr/mo/day) B .,, I? ,,, / 'z Date Completed (yr/mo/day) g.., ( 5 .~ / 9 Total Well Depth (TWO)= Z, ~- ".3
------'-"------------ ~ 1/100 ft Field Personnel .J,.a.,~ l4eyik.'z:f Depth to Ground Water (DGW) = -Z.<.. . -e< 1/100 ft Site Name Ucic;-n,.,.>(;-- ~ ;;' Length of Water Column (LWC) = TWO - DGW = \,. i,,\~ 1/100 ft Job# Cs:J o "5"'\ <"l.. '-( °I_ 1 Casing Volume (OCV) =LWC x , ( (.,,:, = ____t:>_,_7.-_'::l_.___ _ _ __ gallons Well ID# i.,S ~ ~o 5 Casing Volumes = 1.18' gallons Upgradient Downgradient Method of Well Development W~~ ~i.$~
Weather Conditions y C:..cc:2:J::>f Air Temperature ~(..,. ... OF Total Volume of Water Removed 0 gallons Discharge Rate Volume Purged Water Temperature Specific Conductivity Sand Content Date/Time pH Eh Turbidity/Color Remarks (gpm) (gallons) (°C) (µmhos/cm) (%) r g.,eH"t/
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COMMENTS/OBSERVATIONS: ..,-,;-- A,~(.,: ,, la)~ " " J,;_.:.. 'v.C -r- f-...o~ \/t:;l-1),v..£ Mon Well Dev Log-AECOM .xis
AS'COM Monitoring Well Development Log Page __i_ otL Date Started (yr/mo/day) g - \ ~ ., ('J Date Completed (yr/mo/day) ~ , \) ., ( C, Total Well Depth (TWO) = t.t ~ . c 1£_ 1/100 ft Field Personnel J ;.::M.6;. l.£-~ Jl,,\--z< Depth to Ground Water (DGW) = 'Z. ~ , C-t' l 1/100 ft Site Name ~c.r(,e&:~ t Length of Water Column (LWC) = TWO - DGW = _ _..._l<=-'-. o ' ' - ' - - - - - - 1/100 ft Job# C,c.:,~ q_._, Ip "1'\ 1 Casing Volume (OCV) = LWC x , ( I.~ = "l,. <... j gallons r/ - '*f l 5 Casing Volumes = i'),'Z.. gallons Well ID # (.,..>~'--'<:.,
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~ - (gpm) (gallons) (°C) (µmhos/cm) (%)
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A:COM Monitoring Well Development Log Page l of \ Date Started (yr/mo/day) e ~ \ "'\ .. IC\ Date Completed (yr/mo/day) g_ \-4..- ~ °t Total Well Depth (TWO) = 1<.,.,7 i:::. 1/100 ft Field Personnel ~~ l£t:f~ Depth to Ground Water (DGW) = itq 8 t:> 1/100 ft Site Name l.,.>~..,)Y\L,C>..J"i [ Length of Water Column (LWC) = TWO - DGW = _ _"Z....;;_~....;*c..:\c....'- _ _ _ _ __ 1/100 ft Job# e.-,o4 q sc.. ~C\ 1 Casing Volume (OCV) = LWC x , l1.,,) =
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- OF Total Volume of Water Removed 3~ gallons Discharge Rate Volume Purged Water Temperature Specific Conductivity Sand Content Date/Time pH Eh Turbidity/Color Remarks (gpm) (gallons) (OC) (µmhos/cm) (%)
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A:COM Monitoring Well Development Log Page l of \ Date Started (yr/mo/day) q. , 1,.:, ' \ '\ Date Completed (yr/mo/day) q, "1,,-.;.,,' 9. Total Well Depth (TWD) = 3;( c.o 1/100 ft
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AS'COM Monitoring Well Development Log Page_ \_ of_\_ Date Started (yr/mo/day) (\. \ " - \ <\ Date Completed (yr/mo/day) , * \ '\ * \ ~ Total Well Depth (TWO)= 3'2-. \ i. 1/100 ft Field Personnel ,) er-"' ~~µ~ Depth to Ground Water (DGW) = \ \. c,p ~ 1/100 ft Site Name µt:~ ,l(r~~ [ Length of Water Column (LWC) = TWO - DGW = __ -Zt:..~ "\ __;_..:;____;_ _____ 11100ft Job# G,o<~~c.,"{"C\ 1 Casing Volume (OCV) =LWC x * \I.,.-, = '1 .~t;°' gallons Well ID# W-'\ "'\ 5 Casing Volumes = l C. ;"\"' gallons Upgradient Downgradient Method of Well Development _ __. '----'~- (,,.) _,,,.._ ju vc.. ......___~- - - - - - - - - - - - - Weather Conditions y, t\..t>oJ"b~ Air Temperature "1 <.,. "F Total Volume of Water Removed 'iL.\. gallons
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AS'COM Monitoring Well Development Log Page_\_ of_\_ Date Started (yr/mo/day) '"\- \ '\ - \ ~ Date Completed (yr/mo/day) '-:\. \ '-\. \ ~ Total Well Depth (TWO) = JC. ,'2. & 1/100 ft
\..t \1~ IO."&. L Field Personnel JA,,...o... Depth to Ground Water (DGW) = 11100ft Site Name Wi">~,~c,.,~~ ... c. Length of Water Column (LWC) =TWO - DGW = Z. C.. o ~ 11100ft Job# Cs, -0 <'?<'__(,;, ~ <t 1 Casing Volume (OCV) =LWC x , ,~ ~ =- - -"'- *-~- ~- - - - - - - gallons Well ID# w-C\4' 5 Casing Volumes = i. \. 1,-{ gallons Upgradient Downgradient Method of Well Development ~ ~'--~ ~'-l~
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AS'COM Monitoring Well Development Log Page ~ of \
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Date Started (yr/mo/day) C\. i.o ~ \ C\. Date Completed (yr/mo/day) 9. 1. c' l '\ Total Well Depth (TWO)= ) Z., ~ "::> 1/100 ft Field Personnel J>, r-.., l.£~~A---- C Depth to Ground Water (DGW) = 1o. (....:::. 1/100 ft Site Name \>~°'7\ ,-..) (;,--~-<. £ Length of Water Column (LWC) = TWO - DGW = 7 2, 'Z,,. '2...-:, 1/100 ft C:>o-s944, '-1'1 1' Casing Volume (OCV) = LWC x \1.:,'!) = 5°. L, "S gallons Job# W-9 (p 1
-------'~-----
Well ID# 5 Casing Volumes = I'is .\-:, gallons Upgradient Downgradient Method of Well Development _ _~ ____ 0,J. _Lc,,,_,_ _ )_v_4_____________ Weather Conditions Q.\..Z""'~ Air Temperature 5._ '-' OF Total Volume of Water Removed ~'C gallons Discharge Rate Volume Purged Water Temperature Specific Conductivity Sand Content Date/Time pH Eh Turbidity/Color Remarks (gpm) (gallons) (OC) (µmhos/cm) (%) c£ ~1 -i.~
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AS'COM Monitoring Well Development Log Page _ l_ of_
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Date Started (yr/mo/day) C\ . \ °'- * \~ Date Completed (yr/mo/day) ', - \ " * \ '\ Total Well Depth (TWO)= -Z., l. '\~ 11100ft
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Well/Piez. ID: AECOM Well/Piezometer Development Record Client: ?.... Site Location: _ ___,~~ ..... ~= "i,..l '--_..
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WELUPIEZOMETER DATA
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Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond e\2-? Time Removed (gan T 0 (C/F) pH (umhos) Turbidity (NTUs) DO Color Odor Other e~(°'\ i~ '\ °"(\.,.L \"1.<\ c..1.{ i 'J!.C\ o-l~\2.A~ ~ l, ~ N~ '-\?-i..
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Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached Stabilization of parameters _ _% Have parameters stabilized If no or NIA explain below: Signature______.___,. 4 ---=- JJ _ o.) l____.. d -_ --: _ Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: ___ \_:h?r _~\.:<_,~~- ~ ..------<;;_*_L___________ Project No: ~~{'q ( \... '1. <\ ' Developer:....:_ _ . . ,;J
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Original Well Development ~ Redevelopment D Date of Original Development 1-- ~ - '?.( DEVELOPMENT METHOD ~\.)Q..~ / r....,._"")_e::=(' PURGE METHOD Field Testing Equipment Used: Make Model Serial Number
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Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec.Cond ol'i? Time Removed (gal' T (C/F) 0 pH (umhos) Turbidity (NTUs) DO Color Odor Other io-1 '2- t °l . l 1to r--,, \ ..,~ 1...:.,....-',io., , \ \.~ DI(@-~£.£
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lL\oO '-\-c \O\.~ <,. .'-\1 '-l5 LP \ \ t:) \.""\t- ... \ . ACCEPTANCE CRITEfYA (from workplan) Yes No N/A Min. Purge Volume <-~- well volumes) ~ allons Has required volume been removed [21 Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached ~ Stabilization of parameters _ _% Have parameters stabilized l:li.. If no or N/A explain below: Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: _ ___;_ \-\.,_-<o _?.i.. . .k:._.;;.:.,.~=-<:,
;.;: ...L-,...,- -s_ '- _ _ _ _ _ _ _ _ _ __
Project No: <..c,.<ci :{'- ~l '\ Date: -Z. , ~ - Z \ WELUPIEZOMETER DATA
. ., *1 Well li1 Piezometer D Diameter _ _'-_ _ Material f J <.. .
Measuring Point Description -fe L Geology at Screen Interval (if known) Depth to Top of Screen (ft.) 4 i&S Depth to Bottom of Screen (ft.) \ 't, '6 &S Time of Water Level Measurement
/
Total Well Depth (ft.) \ -, . t. 'I Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) jc .1, Disposal Method Wellhead PID/FID Original Well Development ~ Redevelopment D Date of Original Development 2 - S -~ Z. ( DEVELOPMENT METHOD ~c-,~... ~..z PURGE METHOD Field Testing Equipment Used: Model Serial Number 1n-~ \'1,:\ \ C. 33 \::, Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec.Cond Time Removed (gal T0 (C/F) pH (umhos) Turbiditv (NTUs) DO Color Odor Other t ~t::.1 ,~r<.. ~ I~. C\ "'- .1\"1. "2.,11> 1 c;,,..lc:.~~A.,-J(:;:- t, ~ '& -~'-""..:,. ........ 'S°-Z..~ ici..{ l. ( i'1.C... ....'\~ 't4l .. ., ,, - '-\\,,.,
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ACCEPTANCE CRITERIA (from workplan) Y~ No N/A Min. Purge Volume (-5._ well volumes) ~ allons Has required volume been removed It::! Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached ~ Stabilization of parameters _ _% Have parameters stabilized ~ If no or N/A exelain below: J)'2"1. e \.- &.,, L-- Signature_=fs -..--L~ i=¥--U - - '~- Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: __ ___,_i:='=e=?,._\L.
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Stabilization of parameters _ _% Have parameters stabilized ~ If no or NIA explain below: Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: ~ 't' k \~ ', \ <;'. L.- Developer_:_ _j.A, ~ """'~= "-"---~=-=t-~--"'-~- - = - - - - - - WELUPIEZOMETER DATA
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Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec.Cond O\'"\.~ Time Removed (gal T 0 (C/F) pH (umhos) Turbidity (NTUs) DO Color Odor Other c~'-l~ i ... rl'",P.,.\.., n .8 ~ . 1.:i.. \.l."1- e~,2.\"l. i2.1...t(.~ z..e% "4~~ """Ira, \ 1,"""l .t\ eb'i'\ le ~tu .. 4' :"\l 1.Lt!( ,;,.<" \.~, c.~,'- \ ;. \&.\ C\. ~ t,Q£1,_ t,c (t.~ J, : ,*~ l-4 '-t "?.4.\ \.~'l- '. ,..,~~'l.. e~~e. 3c i~ ~ ', :1--\ \~o 'l.- c~ \.~"'\
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ACCEPTANCE CRITE< (from workplan) Yes No NIA Min. Purge Volume ( well volumes) ~ allons Has required volume been removed ~ Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached @ Stabilization of parameters _ _% Have parameters stabilized Ga If no or N/A explain below: Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: --~µ_o_<_'<_{l~~-S--~__{_ <- _______ ____
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WELUPIEZOMETER DATA g_ ,,, ,. Well Piezometer D Diameter--~- - - Material __r _ _C __ Measuring Point Description Geology at Screen Interval (if known) Depth to Top of Screen (ft.) Depth to Bottom of Screen (ft.) Time of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID NA Original Well Development jg Redevelopment D Date of Original Development 2- ,. 1 ,., '2.. { DEVELOPMENT METHOD ) tJ<'"'l.</4 / r'1$l~ PURGE METHOD Field Testing Equipment Used: Make Model Serial Number r'2-o te.~ Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec.Cond e~ Time Removed (aal' T0 (C/F) pH (umhos) Turbidity (NTUs) DO Color Odor Other c(\~c. i. i.a\"'(,J!,.,'-- l<.;, ~ CD.lo\~ u.<\ t:,\l ~\l.Jll...s i ,4, o.'-1 t, t:(.~~.l t-J t) n,, r, cn.( l~ l1.--Z.. 4.'tt... \\\~ j ~L-, ~ ~\ ,, ,., _, ~c
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Well/Piez. ID: AECOM I -
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Well/Piezometer Development Record Client: Site Location: _ _ _ \..b. _ ?_K_ i->_._.......;__....__~_c____________ Project No: ~ '1/4 .C::I.,.'{ q Date: 2.- r 1..- t,. l Developer: .,,br-ce. 4 4-i:.< WELUPIEZOMETER DATA Well e Piezometer D Diameter _ _ __ t- ,. Material t>\J C..... Measuring Point Description Geology at Screen Interval (if known) Depth to Top of Screen (ft.) Depth to Bottom of Screen (ft.) Time of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID NA Original Well Development ~ Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Model
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Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: ___ ~_e_f_LG _ , 1"'_-'S_,__S" _ C. Date: 2. - I , l WELUPIEZOMETER DATA 2 ** Well ~ Piezometer D Diameter _ _ __ Material - -~_'1_<- __ Measuring Point Description ~c.... Geology at Screen Interval (if known) Depth to Top of Screen (ft.) 'th Depth to Bottom of Screen (ft.) Time of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID ~A Original Well Development ,Kl Redevelopment D Date of Original Development -Z. -*-, , -z. I DEVELOPMENT METHOD s*~.c I i\J~(.,~c PURGE METHOD Field Testing Equipment Used: Make Model Serial Number t..(S I ?i:z__, \~ft lo"3 "Sl{ Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond e~ Time Removed (gal T (C/F) 0 pH (umhos) Turbidity (NTUs) DO Color Odor Other jc-;z. ..- ~'"-'--' l<.r:z_ (p .\1- z,~.:;- bJIZ)~~ \,\'-\
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ACCEPTANCE CRITE~ (from workplan) Yes No N/A Min. Purge Volume ( _"5 _ well volumes) ~ gallons Has required volume been removed Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached Stabilization of parameters _ _% Have parameters stabilized If no or N/A explain below: Signatur °e'f ll-1L---+--
-............... +- - Date: 2. I 7 * '-(
Well/Piez. ID: AECOM (.J . lb7 Well/Piezometer Development Record Client: C. ~< (g~44~ ~ 't Site Location: - - - - '~- c- ----"~- K
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Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: _ _ __._ ___.,,_?'--K
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Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond 0 Time Removed (gal) T (C/F) DH (umhos) Turbiditv (NTUs) DO Color Odor Other
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ACCEPTANCE CRITERI~ (from workplan) Yes No N/A Min. Purge Volume ( _ -<_well volumes) Lr.;' gallons Has required voh:ime been removed ~ Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached BOD Stabilization of parameters _ _% Have parameters stabilized ~ If no or N/A explain below: Signature ~ vf-- -li~ -b"'- "' ~L-<~I-_ _ Date:
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'{q IQ1). \t:>3'11S Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __
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ACCEPTANCE CRITE13JA (from workplan) / Yes No N/A Min. Purge Volume ( _-S_ well volumes) Z..3 .., gallons Has required volume been removed ~ Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached ~ Stabilization of parameters _ _% Have parameters stabilized i,i, If no or N/A explain below: Signature_____,,.. ~~/j~~P=-.,___f_ _ Date:
Well/Piez . ID: AECOM Well/Piezometer Development Record Client Site Location: _ _ _Ao ....._..:.f.. .k; _\:. .t--'
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WELUPIEZOMETER DATA
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ACCEPTANCE CRITERIA (from workplan) Yes No N/A Min. Purge Volume( ~ well volumes) Z{5gallons Has required volume been removed 1H Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached 112J, OO Stabilization of parameters _ _% Have parameters stabilized 0 If no or N/A explain below: 1 Signature------""'--" <> { ~ /~
~ ~~L:z -=-,-_ _ Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: C~V Site Location: -----'- ~- ~.....~ ._,.,,,..,-.,
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WELUPIEZOMETER DATA Well Jgj Piezometer D Diameter t.. Material XL Measuring Point Description Geology at Screen Interval (if known) Depth to Top of Screen (ft.) Depth to Bottom of Screen (ft.) Time of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID Original Well Development ~ Redevelopment D Date of Original Development '2 - '1 - -Z..! DEVELOPMENT METHOD ~ {;2,(.--£ ,Ir~ PURGE METHOD Field Testing Equipment Used: Make Model Serial Number
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Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond b \'-t' Time Removed (gal1 T 0 (C/F) pH (umhos) Turbidity (NTUs) DO Color Odor Other
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.i- _ _ Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: ----'- { .\e
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WELUPIEZOMETER DATA Well ~ Piezometer D Diameter ,Z., ** Material --~ -_C..__ Measuring Point Description :foL Geology at Screen Interval (if known) Depth to Top of Screen (ft.) Depth to Bottom of Screen (ft.) Time of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method c:,,J Wellhead PID/FID Original Well Development ~ Redevelopment D Date of Original Development 2
- if~ Z.(
DEVELOPMENT METHOD 5vR,~/f0,~c( PURGE METHOD ( Field Testing Equipment Used: Serial Number (q l\\t:. }"3\.::;" Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond c,-u~ Time Removed (gal T0 (C/F) pH (umhos) Turbidity (NTUs) DO Color Odor Other 0'11..'-f if-il~.t( \..- i(,.,Es, ..,_~ 1,. '2-1 q eil/12..(41\...-\:-~ e. *t3 ~ .... ...... ~ - 1*z..',, a t'.)~2, 't; I c. 11.,g , .41. 2-~1 h
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, Yes No N/A Min. Purge Volume (_<_well volumes) ~ gallons Has required volume been removed IE Maximum Turbidity Allowed _ _ NTUs Has required turbidity been reached @
Stabilization of parameters _ _% Have parameters stabilized ~ If no or N/A explain below: Signature-----+ =6 ......---=-- 1/4 ~ L _I _ _ Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: µ,::<;"(...--(.,{),o-.->\ :[_ Site Location: __(1..'f1.. 1..f.s;:;:_-'=~::,o:,~c!\i.=6=-1ct,..--'S<--<-_ _________ Project No: "'" ( 'f < '1 ~, l'i
\o> Date: e.,z,. 1.. I..
WELUPIEZOMETER DATA Well ~ Piezometer D Diameter 2-*' Material -~~--.s~t.. __ Measuring Point Description ~--(.;, C.. / +-t;, ::> Geology at Screen Interval (if known) Depth to Top of Screen (ft.) Depth to Bottom of Screen (ft.) Time of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PIDIFID _ __,_t-l-'DI________ Original Well Development 129- Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Serial Number 8c:, e. C\e;'B Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond Time Removed Inal 0 T (C/F) DH lumhosl Turbid;i,, INTUs DO Color Odor Other (,.@. "l -zq,.__~"' ~'l\t \.,, \'<A"'.>.. ,.:> o.~. "I'I 12-U'> n,.:; .., . ., 1.-.o l'6. '6'i I11.1 \ i.,.c.\ .( 11,;-_1,(' 4z. '\ -~.'\< ,.
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ACCEPTANCE CRIT~A (from workplan) No NIA Min. Purge Volume ( welj,.volumes) __gallons Has required volume been removed DD Maximum Turbidity Allowed~ NTUs Has required turbidity been reached DD Stabilization of parameters ....1.2_% Have parameters stabilized DD If no or NIA explain below: Signature---G-A~~C~~ +_ Date:
Well/Piez. ID: AECOM W-1\ Well/Piezometer Development Record Client: Date: "1. ~~--z-, WELUPIEZOMETER DATA Well S Piezometer D Diameter *1, " Material f I/ C.. Measuring Point Description
- 1o c.. l-1"~ S. Geology at Screen Interval (if known)
Depth to Top of Screen (ft.) Depth to Bottom of Screen (ft.) nme of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PIDIFID Original Well Development l5!l. Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Serial Number
'i!.-.,.e"l;('L Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __
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Well/Piez. ID: AECOM Well/Piezometer Development Record WELUPIEZOMETER DATA Well ['5 Piezometer D Diameter _ _2." __ Material _!~\I~<:...,~- Measuring Point Description *1cc.. [.\-G-S Geology at Screen Interval (if known) Depth to Top of Screen (fl.) Depth to Bottom of Screen (ft.) Time of Water Level Measurement Total Well Depth (fl.) Calculate Purge Volume (gal.) Depth to Static Water Level (fl.) Disposal Method
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- 111/2,u..... (pc a " " *t, '\ .,- ~
Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond Time Removed laal 0 T IC/Fl pH (umhas) Turbiditv (NTUs) DO Color Odor Other I ;,'-IL\ 'Z.- -Z..o ,'-IR ,.v... <ft-<;°_ l<,. S<"C\'-l. '2..<> <\ - ~ 110c -\nL.9 1~,:;.... \ '-\."' l"t. v-1c G:i, ~c: z;z..-0 "31 -~"1...,~ o.<\'"\ ~ \?.4,-<
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Signature _ _ J;M____,. ~~-~-}____ Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: Site Location: _ __.C"-I-,.V_,_P_ ___;(..l-;___c_l>_l..:'.i_,-.,_.::.S.-1-I_S=.._<-- Project No: C:,c,t;"'"l t; I, '1 C\ , 14 Date: '7 - Z- S - Z \ Developer: J~rv.~s U?j->l..l,.;,...1 WELUPIEZOMETER DATA Well [2l- Piezometer D Diameter_<-___ Material __,_r_*V-=c'--- Measuring Point Description ll": -(t>C. l k"" C,S Geology at Screen Interval (if known) Depth to Top of Screen (ft.) -t-Depth to Bottom of Screen (fl.) t-Time of Water Level Measurement Total Well Depth (fl.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID Original Well Development ~ Redevelopment D Date of Original Development _ _ __ DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Serial Number
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Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond Time Removed lnal T°(C/F) oH (umhos) Turbidilv (NTUsJ DO Color Odor Other
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Well/Piez. ID: AECOM l.) .... \.\.-7 Well/Piezometer Development Record Client: I'//.:::. Site Location: _ ___:~::..:VY:.....:.....:..{_
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Well/Piez. ID: AECOM WeU/Piezometer Development Record Site Location: _ _~_(-_f_Y"_,,,.__-'-~~?,__'1:;_f-)_C.,'---~-c.. _________ Date: Developer: c:JPrM.c:::., L § ~ WELLJPIEZOMETER DATA Well i)g Piezometer O Diameter
---- Material "fJC-Measuring Point Description Geology at Screen Interval (if known)
Depth to Top of Screen (ft.) Depth to Bottom of Screen (ft.) Time of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID Original Well Development ~ Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Serial Number
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Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond Time 0 Removed (gal' T (C/F) pH (umhos) Turbidity (NTUs) DO Color Odor Other l 1c. l l. 0 1<\ .~3 ct.'-t, '2-4'3,'-{ '4- c:.'2,C\ <,.,\""\ ~\Zb..._ ~at) \'7.~3
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Well/Piez. ID: AECOM Well/Piezometer Development Record Sne Location: _ __:C,:..:fi_r:...,,,..,_(-::::- _ _...!.~~i::>"-'-~.:..:'..:.,...<:.__:__ _ <:;_C_______ Developer: .,J,...__, l.::-...~~'-_... WELUPIEZOMETER DATA
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Well/Piez. ID: AECOM Well/Piezometer Development Record 11~// -:"\ Site Location: _ ___;;;"-..c'"_\"_~_,,_ _\-1.,__,__t>-"--'"°~\('.=,...,=-'>.,__-r-_')~--C... Developer: ~...., \ Cf\~~ WELUPIEZOMETER DATA Well IJ9- Piezometer D Diameter z_** Material "'?vc_ Measuring Point Description ~ ,.,c., \-r(1 ~ Geology at Screen Interval (if known) Depth to Top of Screen (ft.)
-z, '1. 0
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ACCEPTANCE CRITE13JA (from workplar:,l Yes No NIA Min. Purge Volume ( _-S_ well volumes) .11._gallons Has required volume been removed ~ Maximum Turbidity Allowed ,;D NT\Js Has required turbidity been reached ~ Stabilization of parameters ~% Have parameters stabilized ~ If no or N/A explain below: Signature~~~~~c........,.__f_ _ Date:
Well/Piez. ID: AECOM ll-1-i..1 Well/Piezometer Development Record Client: I ,_ vJ<<:,-C...,i.-,.k>..-,;. Stte Location: I' C.-C:C
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~ " '& <\ .,;-8 Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __
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ACCEPTANCE CRITE!j(A (from workplan) Yes No N/A Min. Purge Volume (_,;_well volumes) li_gallans Has required volume been removed ~ Maximum Turbidtty Allowed .(0 NTUs Has required turbidtty been reached ~ Stabilization of parameters~% Have parameters stabilized mo If no or N/A explain below: Signature-------=-~~2j?L:_} _ _ Date:
WelVPiez. ID: AECOM Well/Piezometer Development Record Site Location: _ _.::,'--c.:1---:....!..r..!.r_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ Client: Project No: <i,v<"%<,'-f"I. I'-\ Date: 1..Z--Z..\ WELUPIEZOMETER DATA Well 12§' Piezometer D Diameter _ _ Z__ Material _t'~l/~C..~- Measuring Point Description
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1-, C~ 1.::r~ Geology at Screen Interval (if known) Depth to Top of Screen (fl.) 1.. ( Depth to Bottom of Screen (fl.) Time of Water Level Measurement Total Well Depth (fl.) Calculate Purge Volume (gal.) Depth to Static Water Level (fl.) Disposal Method Wellhead PID/FID /l Original Well Development Ii?:! Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Make Model Serial Number us~ Pi2-o i'iJ lo.'-\7'-\5" Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond "12? Time Removed lnal T° IC/Fl DH (umhos) Turbiditv (NTUs DO Color Odor Other O'toc. o'H, I.~ I,( "' t-1. \ to~
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.;('
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Date:
Well/Piez. ID: AECOM Well/Piezometer Development Record Client: S~e Location: _ __,e::....:e.::...C::.:..1_:::: _ _,i,.Jc=...
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--------- Date:
WELUPIEZOMETER DATA Well IZI Piezometer D Diameter _ _..c,__ _
.. Material __r.,_,_~-'L"--_
Measuring Point Description Geology at Screen Interval (if known) Depth to Top of Screen (ft.) Depth to Bottom of Screen (fl.) Time of Water Level Measurement l Cl 1...0 Total Well Depth (fl.) Calculate Purge Volume (gal.) 4.o l Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID Original Well Development gJ Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Make Model Serial Number v.i,.,, Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond o,..- Time Removed laal) T' (C/F) pH (umhos) Turbiditv (NTUs) DO Color Odor Other 10!.!. l,o *v:..:i \u.'\t\ 180.1 ? 2..3'\ 13,z,.ui....> ..,..,_ -"2-JBS I I2-'-I ~, 0 1.-'>.= -u.~ '0'1- 7 c.i:z.. ,, .. -'2.St.o (._ Si!- 7 ., 31-',. 2-- ii'"\!'.: lI C 1-Z. (.. C\"' .... 0,Z..L " 11-c,; ,~ ~ i.i.< (,; _'c,c, \<>iii.. ...f'-/-Z.. C Lt..> ;.:r. li'2- " .... Z?'l. '- 121-t-n "'i..
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C1..~C... 1\1.Z.. 11'-l. l ACCEPTANCE CRITERIA (from workplan) Yes No N/A Min. Purge Volume ( .!f:._ well volumes) 1:::....!lallons Has required volume been removed ~ Maximum Turbid~ Allowed~ NTUs Has required turbid~ been reached Stabilization of parameters ...l.Sc_% Have parameters stabilized If no or N/A explain below: S i g n a t u r e ~ , ~ ~ ' r_ ~l} _ Date:
Welll Piez. ID: AECOM Well/Piezometer Development Record Site Location: __L I\/// _t_'~---~ t' ',
' <- - -~- -~- ,-.>_<.,___ /">_'-__________
Date: '1, -z-, - 'Z... \. Developer: J~ ~~ WELUPIEZOMETER DATA
'2-
~ D Material _f__C.
I,\ Well Piezometer Diameter _ __ _ __ Measuring Point Description
- lo(. [-t-Cs~ Geology at Screen Interval (if known)
Depth to Top of Screen (ft.) +- Z..C. . o Depth to Bottom of Screen (ft.) -t ~ \. C> Time of Water Level Measurement Total Well Depth (ft.) ~ 3338. Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) ~ (t>_ <? .) Disposal Method Wellhead PIDI FID Original Well Development la- Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Serial Number et.8.'V-;-~ Field T esting Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond Time Removed (qal 0 T (C/F) pH (umhos} Turbidity (NTUs) DO Color Odor Other
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Well/Piez. ID: AECOM Well/Piezometer Development Record
~ .-:-c.,,,
Client: Sije Location: ---"'"'-'-n_._,_,_ _________________ Date: t'\ - "?. -z. , 1-\ Developer'-:_ _::,jo::f't,_,1",ie,=.,-'-'~-=~:.:-,._*=*.::....:==--..,_,_ _ _ __ WELUPIEZOMETER DATA Well ra Piezometer 0 Diameter '2. 1' Material \',le:... Measuring Point Description
~/.I e,C. lIt-C, S. Geology at Screen Interval (if known)
Depth to Top of Screen (fl.)
+
-t Depth to Bottom of Screen (fl.) Time of Water Level Measurement Total Well Depth (fl.) Calculate Purge Volume (gal.)
Depth to Static Water Level (fl.) Disposal Method Wellhead PID/FID Original Well Development ~ Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Make Model Serial Number
'1 .-. \ "i=u, ...
Field Testjng Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __ Volume Spec. Cond
,~.,~
Time Removed (gal) T* (C/F)
~.o -z. ... --\
pH c:.. ..!:1. (umhosl Turbidilv (NTUs) 1'6t,3 ~ DO
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ACCEPTANCE CRITERIA (from workplan) Yes No N/A Min. Purge Volume (.!!{__well volumes) __gallons Has required volume been removed Maximum Turbidity Allowed~ NTUs Has required turbidity been reached Stabilization of parameters ...1£..._% Have parameters stabilized If no or N/A explain below: Date:
Well/Piez. ID: Well/Piezometer Development Record Client: \Jeef.~v\,1-w~t Site Location: e_((( ~ , . . . > ') Date: '<* 1..-. -t-\ Developer: J,.......z:, ~~ WELUPIEZO METER DATA Well ~ Piezometer D Diameter __.., .... _ __-~ Material _f"-v=-<:...=-- Measuring Point Description * "It><-{ Cr'> 1"" Geology at Screen Interval. Depth to Top of Screen (ft.) + ~ ~.-,
/ (if known)
Depth to Bottom of Screen (ft.) + '-i ~. ,{.. . Time of Water Level Measurement Total Well Depth (ft.) Calculate Purge Volume (gal.) Depth to Static Water Level (ft.) Disposal Method Wellhead PID/FID Original Well Development ~ Redevelopment D Date of Original Development DEVELOPMENT METHOD PURGE METHOD Field Testing Equipment Used: Serial Number
~,:,e'\s8 Field Testing Calibration Documentation Found in Field Notebook# _ _ _ _ _ _ Page# _ _ _ _ __
Volume Spec. Cond Time Removed Caal T 0 (C/F\ DH (umhos) Turbi<frtv (NTUs) DO Color Odor Other
&"lt.D
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*- - 77..33 ACCEPTANCE CRITEljlA (from workplan) Yes No N/A Min. Purge Volume (_-'>_well volumes) '2.'\ :1gallons Maximum Turbidity Allowed ..f.e_ NTUs Has required volume been removed &I Stabilization of parameters _j£_%
Has required turbidity been reached Have parameters stabilized If no or NIA explain below: Signature _ ___,~-l-". ......,* :.....c~,_p....,J,'-+---------- Date:
Well Redevelopment Records A.:COM Monitoring Well Development Log Page _ _ of _ _
~ /11. I 1".1 1..-{ fn I IC, Total Well Depth (TWD) = ~I. 'ts'- 1/100 ft
,S. 03 __________
Date Started (yr/mo/day) Date Completed (yr/mo/day) Depth to Ground Water (DGW) = ___ ..;... Field Personnel E. ,H::cr</,o'lko ft~c.o.,..,,... 1/100 ft Site Name hJ <. s4-*.~ 0=-.'lo,,(_ . "~" Length of Water Column (LWC) = TWD - DGW = __ .+'\ _____
'l 7:,
1/100 ft Job# ((J O .S ~ ~ l'j * :3 1 Casing Volume (OCV) = LWC x-t< 9s. -6 IS-. C, gallons Well ID# 'i-1.\"::>-o 5 Casing Volumes= n (,d/ I£\ . ? ~SI . 03 gallons Upgradient Downgradient Method of Well Development s~ b~ ... .J, \.-\ ( r-11 Weather Conditions Clp,,J1~ 7:9 s ~ Air Temperature -:+-v~ *F Total Volume of Water Removed 1So gallons Discharge Rate Volume Purged Water Temperature ol.-V Specific Conductivity Sand Content - Date/Time (gpm) (gallons) (*C) pH -eA-(µmhos/cm) Turbidity/Color (%) Remarks nu t/lilt"I /tl'tlS', C) -zo.-.sc, ~ -~ l~\-D '14 '-l '::,(too U.,.._,11J c-...- ,,,.. , .,...1.. JO'tl2>'1 45\.-\,t:-'\ll ' -(
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COMMENTS/OBSERVATIONS: Mon Well Dev Log-AECOM .xis
AS'COM Monitoring Well Development Log Page .....J:... o f ~
/7
'.tt: =- - - - - - - - - - - - + - - - - - - 1/ 100 ft Date Started (yr/mo/day) &I / )"2. f I j Date Completed (yr/mo/day) (/ / 12 / Total Well Depth (TWD)
Fie~ P<nsom,el £. il-~ri Depth to Ground Water (DGW) = 1/100 ft
~ ..,J..: 0 Length of Water Column (LWC) =TWO - DGW = 1/100 ft Site Name , :0c:' -------------
Job# ~ b oS::9 'r6Y 4..3 1 Casing Volume (OCV) = LWC x _ _ = ---+--------- gallons We/1IO# "R.IIV--- o) 5 Casing Volumes = gallons Upgradient Downgradient Method of Well Development
-------+---- ---------
Weather Conditions Ct-.&~ Air Temperature ""'l,- 05 "F Total Volume of Water Removed gallons 0~ Specific Conductivity 5aAil (:;sAl9Rt Discharge Rate Volume Purged Water Temperature Remarks Date/Time pH ~ Turbidity/Color (gpm) (gallons) ("C) (µmhos/cm) (%) t)/)).U
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Remedial Investigation Report Appendix J Deviations from the Work Plans AECOM
Deviations From Work Plans Deviations from the Final Remedial Investigation Work Plan (AECOM, 2019a) and Phase II Remedial Investigation Work Plan (AECOM, 2020) included the following:
- After the submittal of the June 2019 Final Remedial Investigation Work Plan (AECOM, 2019a), DHEC requested that an additional staff gage be installed within Mill Creek. This staff gage was installed within Mill Creek downstream of the Lower Sunset Lake Dike spillway as requested.
- Field parameters (e.g., dissolved oxygen, turbidity) were not collected during surface water sampling. This oversight did not affect the analytical results of these samples.
- Groundwater screening in the floodplain was not part of the Final Remedial Investigation Work Plan (AECOM, 2019a). This additional groundwater assessment was proposed in the Additional Floodplain Assessment Plan (AECOM, 2019b) submitted to DHEC on August 2, 2019, and approved by DHEC on August 7, 2019.
- Several underground electric lines were located close to the proposed locations of the monitoring well pair W-77 and W-93 and did not allow safe clearance for drilling activities. Therefore, these wells were installed approximately 50 feet southeast of their proposed locations.
- Concrete approximately 1 foot below the asphalt surface of the road paralleling the southern portion of the Chemical Area OU and the facilitys power bank running down the middle of the northern lane of this road resulted in monitoring well W-78 being moved across the road. Therefore, monitoring well W-78 was installed approximately 25 feet south of its proposed location.
- Monitoring wells W-83 and W-86 were installed deeper into the surficial aquifer due to an anomalously thick clay layer at the surface. The top 26 and 23 feet, respectively, of the subsurface in the area of these two wells consisted of clay or silty clay compared to approximately 8 feet of silt or clay in other areas of the developed portion of the site. This clay deposit may represent a former oxbow lake or former stream channel that slowly filled with silt and clay overbank deposits.
- The Phase II Remedial Investigation Work Plan (AECOM, 2020) proposed collection of soil samples from two locations (SS-15 and SS-16) in the vicinity of the East and Sanitary Lagoons. Prior to implementation of the Phase II effort, CFFF implemented closure of the East Lagoon. Due to the closure activities, it was unsafe for AECOM personnel to access these areas.
- The Phase II Remedial Investigation Work Plan (AECOM, 2020) proposed the installation of a deeper well, W-101, adjacent to well W-11 to create a well cluster to further delineate vertical Tc-99 concentrations.
When the boring for well W-101 was drilled, the depth of the Black Creek confining clay was shallower than anticipated and was within 5 feet of the screened interval of existing well W-11, a surficial aquifer lower zone well. AECOM personnel spoke to DHEC personnel, and the parties agreed not to install a well in the W-101 boring location because it would not provide any new data.
- During installation of the lower zone surficial aquifer monitoring well W-99, it was noted the thickness of the surficial aquifer was not sufficient to allow a 10-foot screen for upper zone surficial aquifer well W-100 per the Final Remedial Investigation Work Plan (AECOM, 2019a) without overlapping the screened intervals.
AECOM personnel spoke to DHEC personnel and the parties agreed to install both wells with 5-foot screens.
- Upper zone of the surficial aquifer monitoring wells W-96, W-97, and W-119 were also installed with 5-foot screens, instead of 10-foot screens, to screen the same portion of the surficial aquifer where groundwater screening samples indicated impacts to groundwater.
- Due to ponding water in a surficial depression in the western portion of the site, groundwater screening locations L-53, L-56 and L-57 had to be moved from their proposed locations. Borings L-53 and L-56 were moved approximately 100 feet west and boring L-57 was moved approximately 150 feet west of their originally proposed locations.
References AECOM, 2019a. Final Remedial Investigation Work Plan, Westinghouse Columbia Fuel Fabrication Facility, 5801 Bluff Road, Hopkins, South Carolina, June 2019. AECOM, 2019b. Columbia Fuel Fabrication Facility, Additional Floodplain Assessment, Richland County, S.C., Consent Agreement CA-19-02-HW, File # 51377, August 2, 2019. AECOM, 2020. Phase II Remedial Investigation Work Plan, Westinghouse Columbia Fuel Fabrication Facility, 5801 Bluff Road, Hopkins, South Carolina, September 2020.
Remedial Investigation Report Appendix K Site Topographic Map AECOM
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Remedial Investigation Report Appendix L Surface Water Body Descriptions AECOM
Surface Water Body Descriptions Surface water bodies on and within the facility property include the Gator Pond, Mill Creek which contains Upper and Lower Sunset Lakes, and stormwater ditches (Figure 2). The Gator Pond is a man-made surface water body constructed within a shelf of the bluff. This water is approximately 8 feet deep at its greatest depth and is fed by both groundwater and precipitation. Based upon data collected from a pressure transducer and associated staff gage, the elevation of the pond water is consistently within a few inches of approximately 118 feet above mean sea level (AMSL). Mill Creek is a tributary of the Congaree River. The Congaree River is located approximately 3 miles south southwest of the southern property boundary. Within the property, Mill Creek is horseshoe shaped with north-south trending arms on the west and east sides and an east-west trending section in the middle. Flow directions of Mill Creek within the property boundary are highly dynamic due to multiple variables discussed below. There are five fully impounding to semi-impounding dikes within Mill Creek on the property. These are from west to east: Canal Dike, Entrance Dike, Upper Sunset Lake Dike (also known as the Causeway), Lower Sunset Lake Dike (also known as the Spillway) and Exit Dike. The concrete Canal Dike sits at the western end of the man-made canal that diverts most of the flow of Mill Creek along the southern property boundary. Flow into the canal is via a man-made channel connecting Mill Creek to the canal. Surface water in Mill Creek that does not flow into the canal continues to migrate along its natural channel until it encounters the earthen Entrance Dike. A 3-feet diameter galvanized aluminum pipe allows flow through the dike. Beyond the Entrance Dike is Upper Sunset Lake, a forested lowland swamp. At the eastern end of Upper Sunset Lake is the earthen Upper Sunset Lake Dike. An open, steel reinforced, approximately 4 foot wide channel through the Upper Sunset Lake Dike allows water to flow from Upper Sunset Lake into Lower Sunset Lake. Portions of Lower Sunset Lake are open water while other portions are forested swamp. At the eastern end of Lower Sunset Lake is the earthen Lower Sunset Lake Dike that impounds water within this surface water body. Water exits Lower Sunset Lake over a concrete spillway, flowing into the natural swamp of Mill Creek until it encounters the Exit Dike. The Exit Dike is similar to the Entrance Dike with a pipe allowing water to flow through the dike. Due to the Exit Dikes pipe being continually submerged, the type of pipe and its diameter are unknown, but it is likely the same as the Entrance Dike. Water flowing through the Exit Dike discharges at the intersection of the man-made canal and the natural flow channel of Mill Creek. Mill Creek meanders several more miles before discharging to the Congaree River. When the Congaree River floods, it pushes water up Mill Creek causing a reversal in Mill Creeks predominant flow direction depending on the elevation of the flood waters. If the flood waters are high enough, the Lower Sunset Lake spillway is overtopped and flood waters flow east to west within Sunset Lakes. The Canal Dike spillway is approximately 1 foot higher than the Lower Sunset Lake spillway (approximately 110 feet AMSL versus 109 feet AMSL), so flow through Sunset Lakes is the preferential flow path until flood waters fill the canal enough to overtop the Canal Dike spillway. The force of water flowing through the channel at the western end of the canal acts as an impeding force of flood waters filling the canal and the Canal Dike further impedes movement of flood water from the canal into Mill Creek in this area. To understand the flow dynamics within Mill Creek within the property, five pressure transducers (Canal, Entrance, Upper 2, Upper and Lower) and associated staff gages were deployed within Mill Creek. The pressure transducers take water level readings once per hour which are converted to a surface water elevation based upon the referenced elevation of the staff gage. One additional staff gage was installed in Mill Creek below the Lower Sunset Lake to manually obtain surface water elevations within this portion of Mill Creek. There are two primary and one secondary stormwater ditches on the property. The primary ditches are referred to as the Western Ditch and the Eastern Ditch, and the secondary ditch is referred to as the Middle Ditch. Associated with
the Eastern Ditches are five sluice valves (A-valve through E-valve). According to CFFFs Stormwater Pollution Prevention Plan (Westinghouse, 2021): A complete network of storm drains and culverts cover the plant site. These storm drains empty into another network of swales, drainage ditches, and culverts that discharge into upper Sunset Lake and eventually Congaree River, approximately four miles from the site. The storm drains were constructed in four lines, designated by the letters "A," "B," "D," and "E." Each catch basin along the line is clearly marked with the line letter. A gate valve at the end of each line can be closed to contain any spills that enter that line. Each gate valve is clearly marked with the line letter. Lines "A" and "B" empty into the ditch that runs along the south side of the site. Lines "D" and "E" empty into the ditch that runs southwest from the north side of the site. The two ditches meet at the dirt road that runs along the western site boundary. On the west side of the road is the main control valve, labeled "C," which is the sites only storm water outfall. Remote valves can be controlled from either the URRS or Conversion Control Rooms. Valve Normal Operating Position Manual or Remote A 50 % Open Manual B 50 % Open Manual C 100 % Open Remote D 100 % Open Remote E 100 % Open Remote Following verification that there are no leaks/spills leading to storm drains, normally closed valves may be opened in the event of a heavy rainstorm to allow for a higher rate of flow. The valves will be returned to normal state following the conclusion of the storm event. The Middle Ditch is a tributary of the Eastern Ditch and is typically dry except during periods of high water and precipitation. The southern portion of the Middle Ditch is more incised and receives groundwater discharge more frequently than the northern portion of the ditch. Flow near the Middle Ditchs intersection with the Eastern Ditch is common. The Western Ditchs northern extent originates in a forested area north of the facility. This portion of the Western Ditch is man-made and is typically dry. This ditch parallels the property boundary and exits the site onto the adjacent property to the west where it connects to a natural flow channel. This channel comes back onto the site and then discharges into the western end of Upper Sunset Lake near the Entrance Dike. The southern, more incised portion of this ditch receives groundwater. The Eastern Ditch is the primary stormwater ditch on the property. Most of this ditch is man-made and begins as two branches, the western branch and the eastern branch, along Bluff Road at the northeastern property boundary. There are ditches parallel to the southern side of Bluff Road and culverts under Bluff Road that connect to both branches of the Eastern Ditch. The culverts connect to wetlands along the northern side of Bluff Road and water is conveyed through these culverts much of the year. The portion of the Eastern Ditch near the convergence of the Western Ditch and Eastern Ditch is dry year round except for during precipitation events. This portion of the ditch receives stormwater from both the primary and secondary parking lot, is subterranean beneath the facilitys primary parking lot and shortly thereafter merges with the portion of the ditch emanating along Bluff Road. The Eastern Ditch then flows along the eastern edge of the developed portion of the property, turns west, and is piped underneath and flows parallel to the Southern Storage Area and Sanitary Lagoon. The Middle Ditch receives stormwater from the Northern Storage Area and the western portion of the facility. This ditch merges with the Eastern Ditch southwest of the Sanitary Lagoon. The southern portion of this ditch receives groundwater discharge during periods when the water table is high. West of the convergence with the Middle Ditch, the Eastern Ditch is deeply incised and receives groundwater discharge year round. Like the Western Ditch, the Eastern Ditch discharges to Upper Sunset Lake; however, its
discharge point is in the central portion of Upper Sunset Lake. Discharge from these ditches serves as the primary base flow of Upper Sunset Lake during dry periods with the Eastern Ditch being the primary contributor. The property, including portions of the floodplain, was used primarily for agriculture prior to the industrial development. Dewatering ditches were excavated within the floodplain by the previous owner(s). The primary dewatering ditch in the floodplain extends from the central portion of Lower Sunset Lake to Mill Creek near the Exit Dike. Portions of this ditch parallel the bluff, other portions parallel the property boundary, and the southern portion is within a former channel of Mill Creek. The other dewatering ditch is located south of Upper Sunset Lake and extends to a former channel of Mill Creek that remains connected to the current channel. References Westinghouse, 2021. Storm Water Pollution Prevention Plan for Westinghouse Electric Company LLC, 5801 Bluff Road, Hopkins, South Carolina 29061, December 31, 2021.
Remedial Investigation Report Appendix M CFFF Soils AECOM
CFFF Soils Based upon information within the United States Department of Agriculture (USDA) Soil Conservation Service Soil Survey of Richland County (USDA, September 1978), there are six surficial soil types in areas above the bluff and two surficial soil types in the floodplain. Surficial soil types above the bluff consist of loam, fine sandy loam, sandy loam, loamy sand, very fine sandy loam, and the Orangeburg-Urban Land Complex. Surficial soil types below the bluff consist of loam and silty clay loam. These soil types are described in detail below. Above the Bluff The area above the bluff covers approximately 480 acres and includes the developed portion of the site. Loams above the bluff were classified as Cantey (Ca) and Smithboro (Sm) loams. The Cantey loam is a poorly drained, nearly level soil on flat areas and in slight depressions on terraces of the Congaree and Wateree Rivers. Similarly, the Smithboro loam is a somewhat poorly drained, nearly level soil in the valleys of the Congaree and Wateree Rivers. Permeability and runoff from these soils are slow causing water to stand on the surface during rainy periods. These soil classes account for approximately 16% of the area above the bluff. The Coxville (Cx) fine sandy loam is a poorly drained, nearly level soil in concave elliptical depressions on broad ridges of the Coastal Plain. Permeability of this soil is moderately slow and surface water may accumulate during rainy periods in these soils. This soil class accounts for approximately 11% of the area above the bluff including portions of the developed area. Sandy loams above the bluff were classified as Faceville (FaA) and Goldsboro (GoA) sandy loams. The Faceville sandy loam is a well-drained, nearly level soil located on broad ridgetop of the Coastal Plain. The Goldsboro sandy loam is a well-drained, nearly level soil on interstream divides of marine terraces in the Coastal Plain. Permeability of these sandy loams are moderate and runoff from these soils is slow. The Faceville and Goldsboro sandy loam soil classes account for approximately 2% and 4% of the area above the bluff, respectively with the Goldsboro sandy loam underlying part of the developed area. Loamy sands above the bluff were classified as Orangeburg (ObA) and Vaucluse (VaC) loamy sands. The Orangeburg loamy sand is a well-drained, nearly level soil located on ridgetops and interstream divides in the Coastal Plain. The Vaucluse loamy sand is a well-drained, sloping soil located on irregular, abrupt side slopes in the Coastal Plain uplands. Permeability of these loamy sands is moderate, and runoff are slow. The Orangeburg and Vaucluse loamy sand soil classes account for approximately 11% and 1 % of the area above the bluff, respectively. Surface soils in the Denley Cemetery area are Vaucluse loamy sand. The Persanti (Ps) very fine sandy loam is moderately well drained, nearly level soil on terraces in the valleys of the Congaree and Wateree Rivers. Permeability of this soil type is low, and runoff of this soil are slow causing water to pond on the surface during rainy periods. This soil class accounts for approximately 44% of the area above the bluff and very little of the operational area is underlain by this soil class. The Orangeburg-Urban Land Complex (OgB) is a well-drained, nearly level soil located on broad ridgetops and interstream divides in the Coastal Plain. Permeability of this soil is moderate, and runoff is slow. The Orangeburg-Urban Land Complex accounts for approximately 11% of the area above the bluff and underlies most of the developed area of the site. Below the Bluff The area below the bluff covers approximately 670 acres, is a portion of the floodplain of the Congaree River, and contains Mill Creek (including Upper and Lower Sunset Lakes) and the Gator Pond (1% of the area below the bluff is water). Loams below the bluff were classified as Congaree (Co), Chewcala (Ce) and Toccoa (To) loams. The Congaree loam is well drained to moderately well drained, nearly level soil mostly on the floodplains of the Congaree and Wateree Rivers. The Chewcala loam is a somewhat poorly drained, nearly level soil, mostly on the floodplains of the Congaree and Wateree Rivers. The Toccoa loam is well-drained, nearly level soil, mostly on the floodplains of the Broad,
Congaree, Saluda, and Wateree Rivers in both the Coastal Plain and the Piedmont. Permeability of these loams is moderate (with the exception of the Toccoa loam where permeability is moderately rapid), runoffs are slow, and they are commonly flooded for brief periods of time. These soil classes account for approximately 69% of the area below the bluff. Silty clay loam below the bluff consists of Chastain (Cd) and Tawcaw (Tc) silty clay loams. The Chastain silty clay loam is poorly drained, nearly level soil primarily in the floodplains of the Congaree and Wateree Rivers. Permeability of this loam is moderate and areas where it is located are flooded for long periods each year. The Chastain silty clay is contained within the confines of Mill Creek and accounts for 24% of the area below the bluff. The Tawcaw silty clay loam is somewhat poorly drained, nearly level soil primarily on the broad floodplains of the Congaree and Wateree Rivers. Permeability and runoff in this silty clay loam is low, and this soil class accounts for approximately 6% of the area below the bluff. References Additional details such as historical soil survey reports for Richland County can be found on the USDA website. The USDA no longer publishes these reports and new data is added to the website. The last soil survey report for Richland County was published in 1978. Soil types for the Columbia Fuel Fabrication Facility remain unchanged from those published in the 1978 report. Below is a link to the USDA website where additional information can be obtained. https://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx
Remedial Investigation Report Appendix N Fort Jackson South Geologic Quadrangle Map AECOM
Geological Quadrangle Map South Carolina Department of Natural Resources Fort Jackson South, S.C. Geological Survey Produced in Cooperation vrith the National Park Service GQM-52 A' r--;::::::--i Congaree River flood ph1in (Quaternary) - The Quaternary <1l111vium ll f the Cong;in:e Kaczorowski, R.T.. 1976, Or igin of Carolina bays in Hayes. M.0. and Kana. T.W., eds., Terrigcnous elastic CO RH:li:LATION OF MAP l JNITS
~ River fl ood plain averages aboLlt 35 feet thick. As sea leve l receded, valley accretion depositional environments. :,omc modem examples. 11 field course sponsored by the Am~rican Asrociation formed an extensive fl ood plaiR consisting of multip le sequences of channe l-fi ll and overbank ol Petroleum (jeologists: Co lumbia, Coastal Research Division, Depanment of Geology, University of
} Holocene deposits thal accreted vertically and laterally as the river migrated ac ross the valley. The base of South Carolina, Techn ical Repon 11-CRD. p. ll* 16 36.
QUAJ" ER..~ARY the Congaree River flood plain contains poorly sorted, angu lar to rounded, cobb les, gravel, and Kaczorowski , R.T.* 1977. Th~ Carolina bays: A comparison with modern oriented lakes: Columbia. Coastal
\a ) Pio,s<occae cow-sc-graincd quartz sand deposited by a high-ene rgy liuviol channe l. Coarse to very coarse Resenrch Division, Department or Ueology, Un iversity of South Caro lina, *technical Kepon IJ -CRD, 1
feldspar, calcite. epidote. garnet, biotitc, mica. and dark heavy minera l grains Me abu ndant. Wood 124p . and charcoal fragments occur throughout the poo rly sorted mix of allu vi al materials. The Oaf luE§]ity c hID ne l-b ed deposit5 fine upward to c layey, silty. and fine- to coarse-grained fluv ia l sand with 3hur1d;rnl 111ica n aktis. In some drill cmes the fi ning upward sequence is inte rrupted by channel fill Kil~. L. E., 1984. Geology of the L:xi 11gton and Southwest Co lumbia quadrangles ( I :24.000): South Carolina Dc;iill"tmcnt ofNatural [ksourccs Geological Survey, Open-File Rcimn 45. Trt2 sequences tha, are characte rized by H r3ngti of textun:s. Some uf the d 1<1rmd n11 s~uer1ces crn 1tai11 Trt3 CFN07.0 IC cobbles and gravel and very coarse sand. In conrrast, other channel-fi ll sequences l'onlliin very May bin, A.H. and Clendenin, C.W. , Jr., Ill., 1998, Structural features of South Cl'rnlina* South Carolina Pliocene 360 000 mo G fine, clayey, dark , and dense organ ic peat depo sits wich moderately preser.red chunks of woody debris , !eaves , and seeds. Surface geomorphology of the Congaree River flood p lain illustrates an Geologic31 S11rwy, ~n~r~l Geolllgi c M*p Serie_, 4, ,c~ I~ 1:5(]fl,fl0fl. 7 1 G unconlOrmity TERTIARY array of fluvial features includi11g abandoned meande rs, oxbow lakes, meander scro ll ridge and swale comp lexes, n11tural levee depo5its, and yazoo trib utary patterns. Mcitzcn, K.M .. Hownrd. C.S., a d N1*strom. P.G., 2009. Geology or the Poinsett State Park Quadrangle, Kic.h land and S\lmter Counties, South Carolina ll:24.000) : Sou1h Carolina Department of Naiural Resources, Geological Swvey, GMlogic Quadrangle Ma p 46 1 0 0 } Eocene 1--- J Rinr terrace depos its (Quate r na ry) - This is the yoLmgcst of the terrace comp lcxcx Mcit.z:en. K. M., 2010. Geology of the Southwest Columbia 7.5-minutc quadrangle, L;:i-irigton. Calhoun. nnd
' unconklrmity and still contains vestiges of preserved channel morphology and other flu v ia l land form Rich land Counties, South Carol ina (1:24,00U): South Carolina Oepartmilnt of Natural Resources 0 }Paleocene scar~. It sit~ ju.~t aho\'e the designated flood m ne but i5 still vulnerab le !O floo d hazards. The lerr~ci: ,eJimenls cuasisl uf ;i po rl>* sorled silty, fine to "ery coar,e ,and w ith suhmui1ded Geological Sul"\'ey, Geologic Quadrangle Map 50.
unconlormity Nystrom, P.G.* Jr.* \Vi lloughby. R.H., and Pric-c. L.K .. 1991. Cretaceous and Tertiary suatigrnphy of th: upper granu les IDd gravel. l UPPl::K Coastal Plain, South. Carolina. i11 Horton, J.W.J. and Zllllo, V.A .* eds .. The Geology or the Clll'olin11S, EJ [ CRETACEOUS
} MESOZOfC r;:;:::-i Carolina bays (upper Pleistocene t11 Ho locene) - Carolina bays consist of light-gray to Ch1pter 12: Carolina Geolllgical Society Fiftieth. Anni\'ersary Volume: Knoxville, TN, Un iversity of Tennessee Press, pp 21 -240 .
L...::::..J black, clayey quanz sand and organic-rich peat deposits in their interiors and coarser quartz sand and granules in the eolian rims of bay s. Carol ina bays were formed most likely by the Shelley, D.C., 2007, Geologic Map of the Congaree ij- minute quadrangle, Richleud C11unty. South ac tion of prevailing southwesterly winds that scoured blowout-like deHations on the topographic Clll"o lino. (1 :24,000): Sou th Carolina De panment of Natural Resources Geological Surwy, Geologic GEOLOGIC MAPPI NG surface of the regional landscape. Caro linn bays occur an the Atlantic Coastal Plain from New Quadrangle Map J I . Jersey to Florida but arc most abundant between Georgia and Nortli Caro lina (Sol lar nnd Mills, 1991). A lthough the 5hapc and or ientation of Carolina bays can vary, the majority arc e llipso idal. Shd l~y, D.C.. 20rl7. Cre<1logic Map ,if the Waten:e 7.5
- minute quadrangle. Rich.land and Calhoun County, Fort Jackson South 7.5,minute quadrangle lies within the Upper Coasra! Plain of South Carolina Somh Ca.:o lin~ ( I :24.000 ): Sou1h Caroliria Department of Natural Resources Geo logical Survey. Geologic and i; located near the geo!!rap hic center of tlie State, T he quadrangle includes a diverse land v.ith the long axis nrie11ted 1mrthwest-southea.~t and an elevated rim of the bay alon g the northwest Quadrangle Map 36 .
cover includiog urban, rural, agriculture, forestry, and conservation areas (Fi!!ure \). In addition, it m3rgin . T he eolia 11-Uo1nin3 l<:d proc1css that formed Ca rolina hays probably occu 1*red 1rnde r var ious; contains a portion of lhe city of Co lumbia and Fort Jackson Military Reservation, a Uni ted State5 moisture regimes, whereby the Carulim, IIBys seasonally 3n<l Hnmrnlly r,111ged bei wee11 ponded ,uul Soller, D.R. and Mills, 1-1. M., 199 1, Su rf>cial g~o lugy Hml gw morphnlug y, iri Horlrn1, J .W.J. and Zullo, V.A .. Arm)' bas ic training focility. Topographic relief within the quadnmg le ranges from 30 meters along dry condir ions dependem on flucrnating ground-water [e\'e ls (Kaczorowski, 1976, 1977). Th " eds.. The Go.Jlogy of the Caro lina!: Carolina Geological SocCcty f'ifl:i~lil Annivci-=y Volume: Knoxvil le. the Lower Congaree Ri ver in the southwe st corner to 138 meters in the upper nortlicast corner wener condit ions facilitated peat formation , and the drier periods are evidenced by charcoal TN. Univers ity ofTcnn ~ssc~ Press. p. 290-308. (f igure 2). The geologic unit5 i11 thi:; quadrnng le range from the most receni Holocene fragments from episodic fires. Depcs ition of the elevated sand rim i;; likely to have resulted from (Quaternary) alluvia l deposits to Lower Paleocene (fer1iary) marine deposits. The geo logic cross the combination of two processes, waves lapping aga inst the northwest margin and eolian dune
~ection ill ustrates the topograp hic relief and the stratigraph ic ran~e of units. Gills C reek, Reeder fonn11tion . The Carolina bays in the Fort fackson South QLJadrangle have been masked by Point Brnnd,, Mill Cr;;:,:,k, a"d Myers Crnek a ri: 11 ,i: 11,aj nr 1ributaries flowing into the Cm1garee agricultu re and urban development. but their form is still recognizable by their topographic Ri ver, and each contains numemus small pond, The Congan,;i River Vc1lley ;ixtend, from bduw depress ion, orientation, and soil-moisture conditions. Maximum ages arc cstim11ics from reg ional the FalJ Line to the headwaiers of Lake Mario11 on me Santee Riwr. The longitudinal profile of the correlatio ns. but carbom1ceous sediment in a bay in Sumter County is older than the range of 3'58 valley is abo ut 50 km w ith a valley s lope of0 .04 percent and an average valley width o f 6 km. The re liable radiocarbon dates (olde r than approximately 25.000 to 30.00() years; after Brooks and valley trends to the so utheast and i5 bound on the south by Cretaceous 10 Eocene marine deposit;; others, 200 1). lu the Fon Jackso11 S0111h Quadrangle the Caro lin.a hap were fo rmed rm the and on the north by Tertiary and Quaternary Congaree R iver terrace depo,its. Congare.i River Pliocene to Pleistocerm CongMee Rh*er terraces.
valley fluvial depo~i ts range in thickness from 18 meter:; in the upper valley (Meitzen, 20 IO) to 6 mc1crs in the lower v11lk:y (Shc llc:y, 2007) . T ~ Pinehurst Forma tion (Terti ary to Quaterna ry) - Th e Pinehurst Fo rmalion is a widely p ~ distributed eol ian sand that varies in lilickness and composition throughout tile Upper 57
- 30*
The fort Jackson South map area is mostly covered by a series of Tertiary and Quaternary Coastal Plain. Within Fort Jackson South Q uadrangle, the Pinehurst Formation consists of loose Congaree River terraces that step down in age toward the modem channel and flood plain. The quartz ~i ll 11nd sand. The sand ranges from very fine to coorse-grained, rounded to angular, and l<crr<1ct s1irf~;xs are <11ieri:J by an1hropoger1ic: ;;cli~*i1ies and var ious weatheri11g, ero,ion, and exh ib its "nrinblc sorting; however. lilc majority of the depos it is med ium -to coarse-g rained, depositioruil prurnsse, altribut<c<l tu Caru lin<1 B;;y form;;tion, 1ribul>1ry d issi:c1 iun. 311J ,1ll1111i<1l -fa 11 subangular. and moderately soncd. Therefore, the mappc<l area for the Pinehu rs t Fommtion is a accretion. A large alluvia l fan deposired by Mi ll Creek flanks the scarp between two Teniary conscrvati,*e coverage of il5 ex1ent. The Pineh1.1rst sand has been mined extens ive ly in this area. terrace units. The 5ize, extent, and morphotosy of this alluvial fan ;ugge;t lhat it was formed and in most p laces it occurs only as a th in draping over hilltops and hi ll slopes. Most of th e eolian during multip le episodes and could have beer1 conn~ted to c limatic changes or tectonic act iv il)'. Pineli llrst s,md dt:pus its art! le ss rhan 2 feet rh id . lack lateral crn1tim1ity, and were not mapped at Upper Coastal Plain sedimentary marine units :ire present in the nonheast quadrant of the map and 1:24,000 sc.ale. The age of1he uni1 is un~etermined; however, wrrel<1lions with ollier u11 its iml icate were deposited as bedded layers gently dipping to the southeast. T he Congaree River terraces and thar its regional deposi tion spans the laie-Miocene (Nystrom et al. , 1991). mar ine deposits arc underlain by undifferentiated fluv iul and marine Cretaceous sediments lil11t lie unconfonnabl y oo the crystall in e basement rocks. r:;::::;:-7 Ri,*er terrace deposits (Teniary)- Ten iary ri,,.*er terra~e deposits are fluvia l sediments L...'.'..'...'. deposited by the Congaree Ri ver. The terrace units include channel and flood-plain The map area includ e, 2(, km of a ]U-km abandoned channel segment that rep resents a form~ ~ deposits abandoned by valley inc isio n . Terrace sed imen t complexes of the South "66 co11rse uf lhi: Cnr1g;;ri:,i: Ri,*i: r. Th;;: ahandnnc,d channel segme,1l persi~t~ as .a major hydro logk L...'.'..'..:..caro lina Coastal Pla in were bro11dly discussed by Cooke {1936) and later revi sed by feature in Lh;i nood plain and is occ11pieU by tributerrie, Urnining fmm tho: t:ctstern lilulTs. Gills r-:::7 Co lquhoun (1965) . Regi onal terrace correlat ions were mos t recently exnm ined by Creek eaprures the upper reach of the abandoned channel and flows along an abandoned meander ~ Shelley (2007 a. b). Age ranges spanning the Eocene to the Pleistocene have been 10 its confluence with ttie Congaree Ri ver in the adjacent Southwes1 Columbia 7 .5- minute ~ sugge,ted for the te rraces of the upper Congaree River valley (Co lquhoun. 1965), On the quadrangle. Reeder Poi nt Branch and Mill Creek merge at tbe s~e conflue nce with the L...'.'..'..:.. b~is of ~;;lley loca1iu11 and 1opngrapliic position, the Teniary terraces are suhdivided abandoned channe l and fl ow along its lower limb where it eventually reconnects withthe Congaree into four units: Tn I, Tn 2 , To 3, 3nd I n 4. Terrace thid.nesst:s r3r1ge rn_irr, 20 to 50 reiet. Ahh cn,g l* Ri ver. The modern and abandoned channels are comparable in width and depth ; however, the the te rrace sediments are highly variable they l)'pically consist of fin ing upward seq L1ences of sinuosity of the abandoned channel segment is 2.5. which is nearly twice that or lile mod em moderately to poor ly sor1ed , medium- to "ery coarse-grained , angular to subrounded g11ru1z sand. channel wh ich measures 1.5 over the same valley distam:e. The age and cause of the channel The youngest terrace, Tn 1, is delineated by a basal lag of cobbles and gravel that mark fomter avulsion arc nol known. but correlations from ncarb)' landfonm suggest the avulsion occurred channel coorses o f the Congaree Ri\*er. The bases of Trt 2, Tr1 3, and Tr1 4 COiltain a rounded sometime between the Late Pleistocene and mid - Holocene . The channel avulsion includes pebb le-cobble layer and they overly Upper Cretaceous sediments. The local re lief of this contact is 1111rneruus a har,Jo11t;d 111,;,i,ruli,r~ . S1Jgges1i 11g that 1he river occupied this course fnr a long e,mugh significant, and their surfuccs arc minimall y cons trained by a few dri ll-hole locations . NumeroLJs period ()f time to adjrn;t its pl:mform geoITlt'Lry, whii;h ma y ha,*e be"n anywht'lre in a hu nJrnJ lu 3 tributari~s dra in the Teniary terraces, and the surficial topography is complicated by a lluv ial,
\ Ort thousand year time frame . II is possible thai reoccupation and abandonement has occurred more colluvial, eoli an, ground-water processes. and extens ive .anthropogenic modifications.
than once and may occur in the future, Te:;:tonics, valley lithology, and relief are hypothesized to Figure 1. Tme-co lor ;ierial imag;i (NAIP 2009) uf the Fort Jachon South quadrangle shows the have cau~ed the channel avulsion and may explain the differences ir1 channel sinuosil)' betwee n iT:::-7 Congar~ forurnti o11 (tu~i,rn,) -Tl1e Oingaree Formation cm1si.~t.~ ofreddish-bmwn to land-cover contrast between the Congaree Riv~ r flood plain 3n<J the Ueusely pupula1eJ urban the mod~m and abandoned channels. The channel a\'ulsio n occurs immediately upstream of where I~ _j tan, loose, poorly sorted , fine- to C<J3r~e-gra ineJ quart£ ~~ nU wilh clay Cl7a1 i11g Lhc, env ironment. the Aeromagnetic Augusta Fault (AAF) ( Figure 3) crosses the Congaree R iver Valley, and the coarser grains. Some white kaolin lam inations and kao lin balls are also a bundam throughout lil e lower end of the abandoned channel scgmcn1 links to the present location of the Congaree River deposit. The kaolin is mostly found in discontinuous very thin clay bed; and laminae. Fine- to downstream of the lower limit of the Augusta faults aeromagnetic signature. The acromagnctic mediwn-grained dark heavy minerals are relat ively abundant through muc h. of the formatiOl'l. In fault is discussed in greater detail below: however, it is hypcthe5ized that Qua(emary reactivat ion the Fort Jackson South Quadrangle, it occurs in a relatively small local depo sit on a high-elevat ion ohhis structure is the most probable call~e fur Lh~ avt1!siL1n event. hilltop in the northeastern portion of the quad ra ngle. The map wa. developed in a Geographic lnfommion System (GIS), using geologic field-based ~ Lang Sy11e Fo r mation (Paleoce11e) - The Lang Syne fonnat ion cons ists of th in and data and sup p lementary digital ov erlays. Subs urface geologic data were obtained from SCGS L.:...J laterall y contin uous heds nf ye llowish tan to brown , fine to medium coarse-grained drill -hole logs and water-well Jogs (o btained from the SCDNR Hydrology Section). Field micaceous quariz sa nd. Mult iple flr1i 11g-upward sequence$ are 2onrn1on thrm1ghou t the Lang Syne observations of geologic contacts along roodcuts, tributary valleys, and borrow and quarry pits and are typically in sequences 10 to 20 feet thick. A promin ent layer of well-rounded pebbles 0.5 yie lded . valuab le m11pping data. Secondary dat:J source5 lnclude georeferenced I -meter resolut ion to 3 inches in diameter occurs near this basal contact. The Lang Syne unii was nor d rilled in th e 2009 aerial photos (NAIP. 2009) (F igLlrc 1), Soi l Survey Geographic (SSURGO) data. and Fon Jackson map area; however, its presence was inferred from the geoloB)* of the adjacent Nationa l Wetlands Inventory (NWI) data. Congaree quadra11gle (Shelley, 2007) . 53 FAULT RELATIONS r-:;:::-7 Tertiary und illcre:ntiat cd - Sediment5 sim ilar to those of the Huber Format ion underlie L'..':'__J the Quaternary Congaree Rh'c-r alluvial flood-plain deposi ts. These s ubsurface volley An overl ay of the stru~tural features map (Maybir1 and Clendenin, 1998) indicates several deposits consist of bedded. medi1.1m-to coarse-grained 5and with minor amounts of dark heavy structu res present in the southern ponion of Fort Jack son South Quadrang le (I'igure 3). In minerals and submunded granu les. \'ariatioo in the bedded sand ranges from loose. moist sand to partic ular, the Augusta aeromagnetic fault (AAF), a large and comp l~ structural feature that c layey, et.impact sand. Where pre sent, die clay typ ically form s a moist matrix embedded with occ11 rs on the sou1hern 1113rgi1 1 of lhe Reg ional Eastern Piedmnnt fau It system (Hatcher and other~, coarse- lo Vtr) ' coarse-g rai neU s11nd . Multip le fin ing upward sequences are common. Th ese 197 7) that extends aero>> the southern portion o f the quadrangle aml the Cong-dJee Rivn V3lley, sediments are tentatively classified as an unditTerentiateU Teniar)' de posit bemuse they lie belwee r1 where il crosses the valley in an east"*ard direction and then curves iouthea.terly along th e the upper Quaternary alluvium of the Congaree Ri\'er fl ood-plain deposii:s and the underlying northeast side of the valley where it crosses the Wateree Ri,,.er Valley (Maybin and Clendenin, Cretaceous unit. This unit is only visible in the cross-section A -A'. Tnis 1.1nit is ihickest in the 1998). Two splay faults extend away from the AAF in Fort Jackson South Quadrangle. The upper valley and thins towards the lower valley, northern structure 5tri kes nonheast diagonally across the map area, and the second strikes
~ Uppe r Crcta<<ous sediment - Poorly sorted, angular to rounded, cohesive matrix of cast-northeast at a low angle to A.a..t*. lt is interesting to note that the nor1heast fimlt position coincidc5 with the onset of high sinuosity ,.-alues in the abandoned channel segment L....:::...J clayey, silty, micaccous. tine* to , *cry coarse-grained. smoky and white quartz sand.
Rounded to angu lar gravel and pebble layers occur frequently. and thin bc<ls of off-white to gray To the west, in the Steedman Quadrangle, the AAF has a down-to-the-south mov~mcnt thickening kaolin are a!sa common . Cretaceous sediments arc monled white. tan, yellow, orange. and the upper Cretaceous se diments a ho\'e crystalline basement (Doar and Howard , 20 10) and purpli s h-pink. Text11 rfl.lly it coi1sists of ahernaiing fine - and cnaf!le-gra ined cross-bedded compact indicating lale Crelctceou;; or yuunger movernent on the fau lt. To the east, in Poin sett State Park layer;; with muhipli, fi ning-upwfill.l sequences. 1111: Uppi, r Crell!COOus uni t h11s variable th ickness, Quadrangle, Meitzen and oihers (2009) mapped srratigraphic offsets sugge>ting normal fault and hs basal and upper surfaces are irregulw and undulating. mot ion of P liocene or yo unger age. EXPLANATION OF MAP SYMBO LS Correlating these established fault associations with ~eomorphic features in Fon Jackson South quadrangle, it is hypothesized that fau lt-rel ated events were a sign ificant trigger initiating the Conmct - Identity and ex i>tence cenain, locat ion approx.ima 1e . AecomagneffirAugusta Fault (AAF) Congaree River channel avu lsions and the M il l Creek alluvial fan deposition. *1he re exists a good potential for studying paleosc ismic events in th is quadrangle , and this area shou ld be a priori ty for ""'"""'""""'"' "" " ' " Gradatio n al contact - ldentil)* and existence certain , location approximate.
/
- I future hai:ard stud ies.
DESCRIPTION OF MAP UNITS
~. 40-71 Fluvial scarp - Identity and ex istence certai n, location approximate. Hachures point off the ~carp in the di rection of the younge r unit.
Elevation (Feet) High:*142 F igure 2. Digital elevation mode l (DEM) il lu mating the topographic relief between the high-elevat io r1 sand hil ls and the low-ele vation flood -pla in valley, Position of the Aeromagnetic Augusta Fault from
,,:,, South Caro lina Department of Natural Resources Geologica l Survey (SCGS) drill hole l Bodies of water (2009) - Water bodies in clude lakes. major streams, and riverine fcat urc5. Water boundaries are delineated from 2009 digital ortho-quarter q uadrangles locatiorts with log identification numbers. All logs are on file at the SCCS.
Low: 106 Maybin and othm (1998).
©40-263 (TIOQQ,) photos. RIC*39iJ EB Soulh Caro linll nc,pamne u1 ufNarurn l Resnurces Hydrology Sectinn (SC DNR) we ll log r-::-1 Moved eanh - Mo\'ed earih cunsisls ofe3 rthen mater i~J mu\ed oul of pl3ct: b)' hur11ans locations with log identification numbers. AH lugs are on file at Lhe SCD'l\'R.
L..::....J and 7 include; locations where materials are used to l::uild up a site for developmeni and locations where materials are removed by m ining activities. Moved eanh occurs in association x Ex.posure with transponation featiJra5 (e.g., roads, bridges, and overpasses), quarries (e.g., sand, c lay, gravel , and grfillile) and commercial and municipal infrastructure (e.g., airpor1s and water/sewer treatment art facilities}. 1\n abundance of moved earth is present w ithin the Fort Jackson quadrangle because of REFERENCES the dense urban develop ment: however. it is mllppcd only for areas of major surficial impact. Broob. M.J., Taylor, 8.[.. Stone, P.A .. and Gardner. LR.. 200 I. Pkistoccnc encroachment of the Watcrcc River S!llld sheet Into Big Bey on the MidCle Coes!ll Plain 11f South Carolina: S11uth.e3.,,em Geology. v. 40.
,-,,Ocb r-::::::-1 Alluvia l tribu tary valley (Quaterna ry)- Tributar)' stream valleys drain Tertiary Uppc:r p. 24 l-257. I 40-262 4._t L.:::::..J Coastal Plai n marine deposit5, Tertiary-Quaternary flu, ial terraces , and Qualern<1ry*modern fluud -p laiu de pnsi!.'i. Marl)' of the tri butary vall eys are affected hy urhan Cookt, C.W., 1936 , Gt:ology of tl1e Coa5tal Pl ain of Solith Carolina: Uni1cd States Geological Sur,;ey in frastructure arJci conta in numerous ponds and other impounUed w<1ler bodies. The trib11t ary 131.llk tin 867. 196 p.
deposits range from coarser sediments inc luding cobbles, gravel , and coars e, SIDd; to finer-gra ined sand, si h, and clay. The ooarse - to fine-grained variabi li ty is typical for sediment;; wealhered from Colquhoun, DJ., 1965 , Tenace .,;edim~nt complexe, in central South C2r0lina, Coasml Plain Geological the Congaree River terraces. In the tributary valleys of Gills Creek, Mi ll Creek, and Myers Creek, Assod~ tiun Field Confere nce: CLJ\11.nhi;i, Srn1lh C>1ml ina, l .l 11i,*~r~i1y ,,r Suulh Camlina, p. 62. deposits form narrow bonomland fl ood plain, that contain seasonally flooded wetland habitats. The tributaries in th is area drain onto the Congaree River flood plain and flow through abandoned Dan ie ls. D.L., 2005. South Carolina acmmagr.ctie and gravity mlljls lnd dall: n websit~ tor distribution or data: U.S. Geological Survey Open-File Repon 2005-1022, Online, http://pubs.usgs.gov/orf2005il022!, channd segment, bcforc _i oining the main-stem rive r. GEOLOGIC MAP OF THE FORT JACKSON SOUTH QUADRANGLE, CALHOUN AND r~ Alluvia l fan (Quaternary)- l,a rge alluvial fan deposited by Mil l Creek on the Tr1 l and darn dowriloaded June 2009. Doll!', Will iam R.. III and I!oward. C. Scott. 2010. Geo logic Map of the Steedman 7.5- min me quadrangle. L....::::....J Qrt (map units) terrace surfaces. The alluvial fan deposit is an orange to brown poorl y RICHLAND COUNTIES, SOUTH CAROLINA surteU loamy mi ~ ofsih y, fine tu very coarse quHrlz sand wi1t, ~callert'd granule,s and a few heavy minera l grains. The allu,. ial fan is thi ckest r1ear the Tn l and Qn contact and thins Jownstn:am . Ai '.<en illld Lexig\On Countie s, South C(ll'olina {1:24,000): South Carolina Oepmtmenl of Natu ral Rosour= Geological Survey, Genlogic Quadran11le Map 49. The alluvia l fan is morpholog;i::ally diverse and likely formed during more than one depositional Hatche,. R. D.* Jr., Howell, D.E .. and Talwilni. Prndc:cp. 19n. Eastern Piedmont fault system: speculation on episode. its extent Geology. v. 5. p. 636-640. Kimberly M. Meitzen 2011 A A' Fi:ET METERS 500 - 1,0 33 ' 45 ' 81 ° 07'30' Aeromi,g nct ics (~ammo.s) Figure 3. Aeromagnetic map ( Daniel;, 2005) of Fon Jackson South MIii tary RcscMlllon ~ Hi~'i : 183 quadrangle positioned in the center w ith surronding quadrangle area. Boundary
- 120 Posi1ion of aeromagnetic Augusta fault from Maybin and others n,
~~--------
Low: *561 ( 199~). Green line rep resents the Fall l ine. Tp - www.dnr.sc.gov/geology 300 AIC-5f4 I 40 *251
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, s 1\/.eSSBIB Pond I Barne Ma p: U.S. G~ological SuMly Fo rt Jacl<son South 7.5' Q1mdr11n9lo, 1982 1927 Nor,h A"TI~ricftn D~tum Soo~n,vasr Gc lumhla Ga!lgar M Gaston 30 SaylOtll l.al<E 100 Qecf 1962 Magn~t"c Nor1h Oi,c :inalion 4" wast
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,I ~ Go,ology rrEDl)lld 2005'207 7 o~~al c,uiogce.plly by .Je<"nfar l.. k'.rausar, 2011 Tc For putlllca1ions ~act South Car,:, llm. Goological Survey RIC-732 5 Goology Road, Columbie, SC 20212 (8031 89t!* 7714
Remedial Investigation Report Appendix O Hydraulic Characterization Results AECOM
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W-6 FALLING HEAD Data Set: L:\... \W-6 Falling.agt Date: 11/04/21 Time: 08:24:45 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-6 - AQUIFER DATA Saturated Thickness: 23.82 ft- - Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-6} Initial Displacement: 3.156 ft Static Water Column Height: 18.16ft Total Well Penetration Depth: 18.16 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3-SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.6102 ft/day y0 = 2.443 ft
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W-6 RISING HEAD Data Set: L:\... \W-6 Rising.agt Date: 11/04/21 Time: 08:44:35 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-6 - AQUIFER DATA Saturated Thickness: 23.82 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-6} Initial Displacement: 3.365 ft Static Water Column Height: 18.16ft Total Well Penetration Depth: 18.16 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.4007 ft/day y0 = 2.381 ft
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W-11 FALLING HEAD Data Set: L:\... \W-11 Falling.agt Date: 11/04/21 Time: 08:36:43 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-11 - - AQUIFER DATA Saturated Thickness: 20.61 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-11} Initial Displacement: 3.937 ft Static Water Column Height: 10.08 ft Total Well Penetration Depth: 10.08 ft Screen Length: 3. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.06298 ft/day y0 = 2.809 ft
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W-11 RISING HEAD Data Set: L:\... \W-11 Rising.agt Date: 11/04/21 Time: 08:56:19 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-11 - - AQUIFER DATA Saturated Thickness: 20.61 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-11} Initial Displacement: 2.959 ft Static Water Column Height: 10.08 ft Total Well Penetration Depth: 10.08 ft Screen Length: 3. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.05564 ft/day y0 = 2.809 ft
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Time (sec) W-19B FALLING HEAD Data Set: L:\... \W-19B Falling.agt Date: 11/04/21 Time: 09:01 :51 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-19B AQUIFER DATA Saturated Thickness: 18.19 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-19B) Initial Displacement: 1.717 ft Static Water Column Height: 18.36 ft Total Well Penetration Depth: 18.36 ft Screen Length: 10. ft Casing Radius: 0.167 ft Well Radius: 0.167 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 8.65 ft/day y0 = 1.382 ft
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Time (sec) W-19B RISING HEAD Data Set: L:\... \W-19B Rising.agt Date: 11/04/21 Time: 09:05:04 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-19B AQUIFER DATA Saturated Thickness: 18.19 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-19B) Initial Displacement: 1.424 ft Static Water Column Height: 18.36 ft Total Well Penetration Depth: 18.36 ft Screen Length: 10. ft Casing Radius: 0.167 ft Well Radius: 0.167 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 8.228 ft/day y0 = 1.409 ft
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Time (sec) W-65 FALLING HEAD Data Set: L:\... \W-65 Falling.agt Date: 11/04/21 Time: 09:06:26 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W - AQUIFER DATA Saturated Thickness: 22.2 ft Anisotropy Ratio (Kz/Kr): 1.- WELL DATA (W-65} Initial Displacement: 3.716 ft Static Water Column Height: 22.39 ft Total Well Penetration Depth: 22.39 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 2.492 ft/day y0 = 2.66 ft
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Time (sec) W-65 RISING HEAD Data Set: L:\... \W-65 Rising.agt Date: 11/04/21 Time: 09:08:24 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W - AQUIFER DATA Saturated Thickness: 22.2 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-65} Initial Displacement: 3.014 ft Static Water Column Height: 22.39 ft Total Well Penetration Depth: 22.39 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 1.505 ft/day y0 = 2.646 ft
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Time (sec) W-67 FALLING HEAD Data Set: L:\... \W-67 Falling.agt Date: 11/04/21 Time: 09: 11 :28 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-67 - - AQUIFER DATA Saturated Thickness: 25.24 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-67} Initial Displacement: 3.253 ft Static Water Column Height: 18.05 ft Total Well Penetration Depth: 18.05 ft Screen Length: 10. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 1.929 ft/day y0 = 2.153 ft
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Time (sec) W-67 RISING HEAD Data Set: L:\... \W-67 Rising.agt Date: 11/04/21 Time: 09: 13:32 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-67 - - AQUIFER DATA Saturated Thickness: 25.24 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-67} Initial Displacement: 3.051 ft Static Water Column Height: 18.05 ft Total Well Penetration Depth: 18.05 ft Screen Length: 10. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 1.612 ft/day y0 = 2.24 ft
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Time (sec) W-68 FALLING HEAD Data Set: L:\... \W-68 Falling.agt Date: 11/04/21 Time: 09:24:58 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-68 - - AQUIFER DATA Saturated Thickness: 15.82 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-68} Initial Displacement: 3.668 ft Static Water Column Height: 16.46 ft Total Well Penetration Depth: 16.46 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 4.644 ft/day y0 = 2.016 ft
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Time (sec) W-68 RISING HEAD Data Set: L:\... \W-68 Rising.agt Date: 11/04/21 Time: 09:27:20 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-68 - - AQUIFER DATA Saturated Thickness: 15.82 ft Anisotropy Ratio (Kz/Kr): 1.- WELL DATA (W-68} Initial Displacement: 2.576 ft Static Water Column Height: 16.46 ft Total Well Penetration Depth: 16.46 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 5.279 ft/day y0 = 2.361 ft
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Time (sec) W-94 FALLING HEAD Data Set: O:\ ... \W-94 cks Falling.agt Date: 02/14/20 Time: 10:52:19 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-94 - - AQUIFER DATA Saturated Thickness: 19.62 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-94} Initial Displacement: 4.4 ft Static Water Column Height: 20.02 ft Total Well Penetration Depth: 19.77ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 4.667 ft/day y0 = 2.516 ft
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Time (sec) W-94 RISING HEAD Data Set: O:\ ... \W-94 cks Rising.agt Date: 02/14/20 Time: 10:52:37 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-94 - - AQUIFER DATA Saturated Thickness: 19.62 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-94} Initial Displacement: 4.4 ft Static Water Column Height: 20.02 ft Total Well Penetration Depth: 19.77ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 5.937 ft/day y0 = 2.773 ft
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Time (sec) W-95 FALLING HEAD Data Set: O:\ ... \W-95 cks Falling.agt Date: 02/14/20 Time: 10:53:03 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-95 - - AQUIFER DATA Saturated Thickness: 75.15 ft - - Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-95} Initial Displacement: 4.4 ft Static Water Column Height: 25.49 ft Total Well Penetration Depth: 25.24 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 59.84 ft/day y0 = 0 .4406 ft
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Time (sec) W-95 RISING HEAD Data Set: O:\ ... \W-95 cks Rising.agt Date: 02/14/20 Time: 10:53:23 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W - AQUIFER DATA Saturated Thickness: 75.15 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-95} Initial Displacement: 4.4 ft Static Water Column Height: 25.49 ft Total Well Penetration Depth: 25.24 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 26.05 ft/day y0 = 0.1468 ft
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Time (sec) W-96 FALLING HEAD Data Set: O:\ ... \W-96 cks Falling.agt Date: 02/14/20 Time: 10:53:44 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-96 - - AQUIFER DATA Saturated Thickness: 37.73 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-96} Initial Displacement: 4.4 ft Static Water Column Height: 21.7 ft Total Well Penetration Depth: 21.45 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 41.19 ft/day y0 = 0.666 ft
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Time (sec) W-96 RISING HEAD Data Set: O:\ ... \W-96 cks Rising.agt Date: 02/14/20 Time: 10:54:02 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-96 AQUIFER DATA Saturated Thickness: 37.73 ft Anisotropy Ratio (Kz/Kr): 1.- WELL DATA (W-96} Initial Displacement: 4.4 ft Static Water Column Height: 21.7 ft Total Well Penetration Depth: 21.45 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 75.97 ft/day y0 = 1.283 ft
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Time (sec) W-97 FALLING HEAD Data Set: O:\ ... \W-97 cks Falling.agt Date: 02/14/20 Time: 10:51 :45 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-97 - - AQUIFER DATA Saturated Thickness: 33.08 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-97} Initial Displacement: 4.4 ft Static Water Column Height: 14.46 ft Total Well Penetration Depth: 14.21 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 78. ft/day y0 = 1.279 ft
- 10. ~ - - - - - - ~ - - - - - - ~ - - - - - - ~
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Time (sec) W-97 RISING HEAD Data Set: O:\ ... \W-97 cks Rising.agt Date: 02/14/20 Time: 10:50:56 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-97 - - AQUIFER DATA Saturated Thickness: 33.08 ft - - Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-97} Initial Displacement: 4.4 ft Static Water Column Height: 14.46 ft Total Well Penetration Depth: 14.21 ft - - Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 82.89 ft/day y0 = 1.05 ft
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Time (sec) W-98 FALLING HEAD Data Set: L:\... \W-98 Falling.agt Date: 11/04/21 Time: 09:29:54 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-98 - - AQUIFER DATA Saturated Thickness: 23.59 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-98} Initial Displacement: 1.932 ft Static Water Column Height: 6.31 ft Total Well Penetration Depth: 6.31 ft Screen Length: 6.31 ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 1.057 ft/day y0 = 0.2564 ft
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Time (sec) W-98 RISING HEAD Data Set: L:\... \W-98 Rising.agt Date: 12/14/21 Time: 16:52:07 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-98 - - AQUIFER DATA Saturated Thickness: 23.59 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-98} Initial Displacement: 0.984 ft Static Water Column Height: 6.31 ft Total Well Penetration Depth: 6.31 ft Screen Length: 6.31 ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 1.037 ft/day y0 = 0.2872 ft
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Time (sec) W-103 FALLING HEAD Data Set: L:\... \W-103 Falling.agt Date: 11/04/21 Time: 09:35:06 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-103 AQUIFER DATA Saturated Thickness: 24.2 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-103} Initial Displacement: 3.066 ft Static Water Column Height: 24.62 ft Total Well Penetration Depth: 24.62 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 12.23 ft/day y0 = 1.938 ft
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Time (sec) W-103 RISING HEAD Data Set: L:\... \W-103 Rising.agt Date: 11/04/21 Time: 09:40:37 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-103 AQUIFER DATA Saturated Thickness: 24.2 ft Anisotropy Ratio (Kz/Kr): 1.- WELL DATA (W-103} Initial Displacement: 2.977 ft Static Water Column Height: 24.62 ft Total Well Penetration Depth: 24.62 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 11.97 ft/day y0 = 2.584 ft
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Time (sec) W-117 FALLING HEAD Data Set: L:\... \W-117 Falling.agt Date: 11/04/21 Time: 14:35:14 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-117 AQUIFER DATA Saturated Thickness: 25.26 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-117} Initial Displacement: 3.198 ft Static Water Column Height: 25.05 ft Total Well Penetration Depth: 25.05 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 13.27 ft/day y0 = 2.321 ft
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Time (sec) W-117 RISING HEAD Data Set: L:\... \W-117 Rising.agt Date: 11/04/21 Time: 14:37:11 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-117 AQUIFER DATA Saturated Thickness: 25.26 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-117} Initial Displacement: 2.851 ft Static Water Column Height: 25.05 ft Total Well Penetration Depth: 25.05 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 7.474 ft/day y0 = 2.672 ft
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Time (sec) W-118 FALLING HEAD Data Set: L:\... \W-118 Falling.agt Date: 11/04/21 Time: 14:39:36 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-118 AQUIFER DATA Saturated Thickness: 27.12 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-118} Initial Displacement: 3.277 ft Static Water Column Height: 12.61 ft Total Well Penetration Depth: 12.61 ft Screen Length: 10. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 6.266 ft/day y0 = 1.708 ft
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Time (sec) W-118 RISING HEAD Data Set: L:\... \W-118 Rising.agt Date: 11/04/21 Time: 14:41 :38 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-118 AQUIFER DATA Saturated Thickness: 27.12 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-118} Initial Displacement: 2.926 ft Static Water Column Height: 12.61 ft Total Well Penetration Depth: 12.61 ft Screen Length: 10. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 5.537 ft/day y0 = 2.173 ft
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Time (sec) W-119 FALLING HEAD Data Set: L:\... \W-119 Falling.agt Date: 11/04/21 Time: 14:44:37 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-119 AQUIFER DATA Saturated Thickness: 29.02 ft - - Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-119} Initial Displacement: 2.578 ft Static Water Column Height: 17.76 ft Total Well Penetration Depth: 17.76ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 36.52 ft/day y0 = 1.46 ft
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Time (sec) W-119 RISING HEAD Data Set: L:\... \W-119 Rising.agt Date: 11/04/21 Time: 14:46:29 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-119 AQUIFER DATA Saturated Thickness: 29.02 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-119} Initial Displacement: 1.529 ft Static Water Column Height: 17.76 ft Total Well Penetration Depth: 17.76ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 11.51 ft/day y0 = 1.168 ft
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Time (sec) W-120 FALLING HEAD Data Set: L:\... \W-120 Falling.agt Date: 11/04/21 Time: 14:53:48 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well : W-120 AQUIFER DATA Saturated Thickness: 24.26 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-120} Initial Displacement: 3.327 ft Static Water Column Height: 24.06 ft Total Well Penetration Depth: 24.06 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 4.366 ft/day y0 = 2.504 ft
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Time (sec) W-120 RISING HEAD Data Set: L:\... \W-120 Rising.agt Date: 11/04/21 Time: 15:02:10 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-120 AQUIFER DATA Saturated Thickness: 24.26 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-120} Initial Displacement: 2.725 ft Static Water Column Height: 24.06 ft Total Well Penetration Depth: 24.06 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 3. 787 ft/day y0 = 2.594 ft
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Time (sec) W-126 FALLING HEAD Data Set: L:\... \W-126 Falling.agt Date: 11/04/21 Time: 15:27:19 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-126 AQUIFER DATA Saturated Thickness: 40.24 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-126} Initial Displacement: 3.12 ft Static Water Column Height: 39.22 ft Total Well Penetration Depth: 39.22 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 28.91 ft/day y0 = 2.302 ft
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Time (sec) W-126 RISING HEAD Data Set: L:\... \W-126 Rising.agt Date: 11/04/21 Time: 15:29:04 PROJECT INFORMATION Company: AECOM Client: Westinghouse Location: Hopkins, SC Test Well: W-126 AQUIFER DATA Saturated Thickness: 40.24 ft Anisotropy Ratio (Kz/Kr): 1. WELL DATA (W-126} Initial Displacement: 2.634 ft Static Water Column Height: 39.22 ft Total Well Penetration Depth: 39.22 ft Screen Length: 5. ft Casing Radius: 0.083 ft Well Radius: 0.083 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 19.18ft/day y0 = 2.53 ft
Remedial Investigation Report Appendix P Site Hydrogeology AECOM
Site Hydrogeology Groundwater in the surficial aquifer occurs under unconfined (water table) conditions and generally flows from areas of higher topography in the vicinity of the plant building towards areas of lower topography in the floodplain of the Congaree River along Mill Creek. Although the sediment above and below the bluff were deposited during different time periods according to the Geologic Map of the Fort Jackson South Quadrangle (DNR, 2011), the sediments were both deposited by the Congaree River and are hydrogeologically connected based on data collected during the RI. Despite a change in elevation of approximately 30 feet in land surface from the area above the bluff to the floodplain below the bluff, the surficial aquifer is a single, unconfined aquifer with similar thicknesses above and below the bluff. Groundwater monitoring wells were installed at differing depths to assess constituent of potential concern (COPC) migration within the surficial aquifer. Monitoring wells installed near the top and in the middle of the surficial aquifer are designated as surficial aquifer upper zone monitoring wells, whereas wells installed on top of or within 5 feet of the Black Creek confining clay are designated as surficial aquifer lower zone monitoring wells. One exception to the criteria above is monitoring well W-95 located near the southern extent of Upper Sunset Lake. This well is designated as a surficial aquifer lower zone monitoring well because chlorinated volatile organic compounds (CVOCs) migrating within the lower zone of the surficial aquifer on the northern side of Upper Sunset Lake are detected in groundwater in monitoring well W-95, which is installed on top of a low permeability silt, while monitoring well W-111, installed on top of the Black Creek confining unit at this location, is not impacted by CVOCs. The low permeability silt on which monitoring well W-95 is installed acts as a local confining unit that inhibits CVOC migration deeper into the incised portion of the surficial aquifer where W-111 is screened. The surficial aquifer is anomalously thick at this location. Discharge of groundwater to the deeply incised portions of the ditches appears to influence groundwater flow and COPC migration within the upper zone of the surficial aquifer. The Gator Pond appears to influence COPC migration as evidenced by COPC impacts in surficial aquifer groundwater migrating in a more easterly or westerly direction in the vicinity of the Gator Pond. Lower Sunset Lake may also deflect groundwater migration in areas with low hydraulic gradients. Groundwater flow in the Black Creek Aquifer is inferred to the southwest based upon groundwater elevations from the four monitoring wells that are screened within this aquifer. Hydraulic Characteristics Prior to the RI, slug tests were conducted in ten monitoring wells (W-13R, W-15, W-26, W-33, W-35, W-39, W-41R, W-48, W-60 and W-61) and pump tests were conducted in two monitoring wells (W-RW1 and W-RW2) during previous scopes of work. Hydraulic conductivity tests (slug tests) were performed in 17 monitoring wells (W-6, W-11, W-19B, W-65, W-67, W-68, W-94 through W-98, W-103, W-117 through W-120, and W-126) during the RI (Appendix O). Historical and RI hydraulic characterization results are as displayed in Table 6. These tests were conducted to provide estimates of the hydraulic conductivity in the portion of the surficial aquifer immediately surrounding the screened interval of each tested well. Slug tests during the RI and in monitoring wells W-13R, W-15, W-39, W-48, W-60 and W-61 were conducted by two methods: falling head test (slug in) and rising head test (slug out). The remaining slug tests from older scopes of work were falling head tests only. The hydraulic conductivity values determined by historical and recent slug tests ranged from 0.06 to 125.20 feet per day (ft/day). Based on these values the average hydraulic conductivity calculated for the site is 16.44 ft/day. Because wells are screened at different depths (upper zone and lower zone of the surficial aquifer) and in different areas of the site (above the bluff, near the bluff, and below the bluff), average hydraulic conductivities were also calculated based on these factors to assist in evaluating horizontal groundwater flow velocities throughout the property. Monitoring wells were not able to be installed on the steep slopes of the bluff, so evaluation of hydraulic conductivities near the bluff were used to estimate the conductivity of bluff sediments. Based upon the depth and location criteria for the monitoring wells in which slug tests or pump tests were conducted, the following average hydraulic conductivities were calculated:
Average Hydraulic Conductivities (Calculated):
- Above the bluff, upper zone of the surficial aquifer = 7.57 ft/day
- Above the bluff, lower zone of the surficial aquifer = 14.77 ft/day
- Near the bluff, upper zone of the surficial aquifer = 3.94 ft/day
- Near the bluff, lower zone of the surficial aquifer = 5.87 ft/day
- Below the bluff, upper zone of the surficial aquifer = 69.51 ft/day
- Below the bluff, lower zone of the surficial aquifer = 17.87 ft/day The monitoring wells screened in the upper zone of the surficial aquifer near the bluff that were used to generate the values listed above include W-13R, W-15, W-26, W-67 and W-98. The wells screened in the lower zone of the surficial aquifer near the bluff used to generate the above calculations include W-48, W-68 and W-103.
Hydraulic Gradient Hydraulic gradient is the change in total head (water elevation) over distance in a given direction (Fetter, 1994). Gradients exists horizontally and vertically within an aquifer. Water table elevations roughly mirror topography with steeper gradients in areas with steeper changes in elevation (e.g., the bluff at the site). Generally, the site gently slopes from the north to the south except for the bluff and the erosional features caused by the stormwater ditches, particularly within the stormwater ditchs natural flow channels. As discussed above, groundwater in the surficial aquifer flows predominantly to the southwest with components of flow to the west and south. The groundwater elevations and flow maps were used to calculate average horizontal gradients across the site. To obtain accurate distances between well locations, the ArcMap tool within Esris ArcGIS program was used to measure distances between each well used to calculate a horizontal hydraulic gradient. Based on the groundwater elevations from the October 2021 synoptic water level gauging event, the average horizontal hydraulic gradients for each location/zone are as follows: Average Horizontal Hydraulic Gradients (October 2021):
- Above the bluff, upper zone of the surficial aquifer = 0.00637 feet per foot (ft/ft)
- Above the bluff, lower zone of the surficial aquifer = 0.00472 ft/ft
- Bluff, upper zone of the surficial aquifer = 0.0329 ft/ft
- Bluff, lower zone of the surficial aquifer = 0.0276 ft/ ft
- Below the bluff, upper zone of the surficial aquifer = 0.000488 ft/ ft
- Below the bluff, lower zone of the surficial aquifer = 0.000297 ft/ ft Vertical Hydraulic Gradients (October 2019-October 2021):
Vertical gradients are a measure of pressure head over a change in depth and provide an indication of whether COPCs have the potential to migrate vertically from shallower groundwater zones to deeper zones or vice versa. Vertical hydraulic gradients were also calculated for semi-annual synoptic water level gauging events from October 2019 through October 2021 for paired upper and lower zones of surficial aquifer well pairs across the site and for upper zone of the surficial aquifer to the Black Creek Aquifer (Table 7). The following formula was used to calculate vertical hydraulic gradients at each well pair: ( GWUW-GWLW) (UW-LW)
= Vertical Gradient (ft/ft)
Where: GW UW = groundwater elevation of upper zone of the surficial aquifer well (ft)
GW LW = groundwater elevation of lower zone of the surficial aquifer well (ft) SW = elevation of top of the mid-point of the upper zone of the surficial aquifer well screen (ft) DW = elevation of the top of the mid-point of lower zone of the surficial aquifer well screen (ft) The potential for flow between the surficial aquifer and the Black Creek Aquifer was assessed to be generally downward at vertical hydraulic gradients ranging between 0.018 and 0.190 ft/ft. These values are similar to previously calculated downward gradients of 0.04 and 0.1 ft/ft (Rust, 1995 and AECOM, 2015). There was an upward gradient calculated for the W-4R/W-3A well pair which is also due to the steep topography in this area. However, low moisture content and vertical hydraulic conductivities of less than 10-7 centimeters per second (S&ME, 1982) throughout the 39 to 83 foot thickness of the Black Creek confining clay preclude migration of groundwater between the surficial aquifer and the Black Creek Aquifer which in turn precludes potential migration to the deeper Middendorf Aquifer. Groundwater Flow Velocity The hydrogeologic data (hydraulic conductivity and gradient) collected at the site were used to calculate groundwater flow rates for each location/zone using Darcys Law as follows: x K V= n Where: V = Average Groundwater Flow Velocity i = Groundwater Gradient K = Hydraulic Conductivity n = Effective Porosity Based upon the hydraulic conductivities above, the hydraulic gradients above, and an estimated effective porosity of 0.30, the average groundwater flow velocity calculated for each location/zone is as follows: Average Groundwater Flow Velocity (Calculated):
- Above the bluff, upper zone of the surficial aquifer = 0.161 ft/day or 58.71 ft/year
- Above the bluff, lower zone of the surficial aquifer = 0.232 ft/day or 84.85 ft/year
- Bluff, upper zone of the surficial aquifer = 0.431 ft/day or 157.58 ft/year
- Bluff, lower zone of the surficial aquifer = 0.541 ft/day or 197.55 ft/year
- Below the bluff, upper zone of the surficial aquifer = 0.113 ft/day or 41.32 ft/year
- Below the bluff, lower zone of the surficial aquifer = 0.018 ft/day or 6.46 ft/year References AECOM, 2015. Remedial Investigation Report, Westinghouse Electric Company, Columbia Fuel Fabrication Facility, Richland County, South Carolina, September 25, 2015.
DNR Geologic Survey, 2011. Geologic Map of the Fort Jackson South Geologic Quadrangle, Calhoun and Richland Counties, South Carolina, GQM-52, Kimberly M. Meitzen 2011. Fetter, C. W., 1994. Applied Hydrogeology, Third Edition. University of Wisconsin - Oskosh, Macmillan College Publishing Company.
Rust, 1995. Conceptual Design Report, Westinghouse Commercial Fuel Division, Columbia, South Carolina, September 8, 1995. S&ME, 1982. Ground-Water Hydrology of the Westinghouse Electric Corporation Plant, Richland County, South Carolina, March 1, 1982.
Remedial Investigation Report Appendix Q Soil Analytical Results (on DVD) AECOM
Remedial Investigation Report Appendix R Grain Size Analytical Results (on DVD) AECOM
Remedial Investigation Report Appendix S Groundwater Analytical Results (on DVD) AECOM
Remedial Investigation Report Appendix T RI Analytical Results Tables AECOM
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-RW1 W-RW2 W-3A W-4R W-6 W-7A W-10 W-11 W-13R W-14 W-15 W-16 W-17 W-18R W-19B Date 10/14/2021 10/21/2021 10/25/21 10/25/21 10/8/21 10/5/21 10/5/21 10/5/21 10/5/21 10/18/21 10/19/21 10/19/21 10/12/21 10/8/21 10/20/21 Type N N N N N N N N N N N N N N N Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 2.13 # 0.577 # 2.10 # 0.170 # 13.5 8.14 0.131 # 0.816 # 0 ## 3.06 # 1.06 # 2.42 # 1.36 # 20.9 2.63 Radiological Beta particles 50
- pCi/L 2.32 # 5.46 5.86 0.278 # 1290 105 60.0 627 70.7 9.79 114 16.9 514 49.3 0 ##
Radiological Technetium-99 900 pCi/L 0.0163 # 6.40 0 ## 0.442 # 2500 193 98.2 1230 126 0.299 # 221 7.37 719 143 1.70 # Radiological Uranium-233/234 pCi/L 0.246 # 0.134 # 0 ## 0 ## 0.255 0.277 0.291 0.0982 # 0.195 # 0 ## 0 ## 0 ## 0.222 # 1.37 0.0812 # Radiological Uranium-235/236 pCi/L 0.135 # 0.0295 # 0 ## 0.0179 # 0.152 # 0.0105 # 0.0763 # 0.0430 # 0.151 0 ## 0.0538 # 0.0276 # 0.105 # 0 ## 0.0699 # Radiological Uranium-238 pCi/L 0.0601 # 0.582 0.0616 # 0 ## 0.167 0.101 # 0.0777 # 0.0347 # 0.122 0.00371 # 0 ## 0.00235 # 0.117 # 1.15 0.0976 # Radiological Uranium-234 ug/L < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 0.0240 J < 0.0700 Radiological Uranium-238 ug/L < 0.200 0.0739 J 0.0700 J < 0.200 0.321 0.558 0.138 J 0.0947 J 0.158 J 0.221 < 0.200 0.0770 J 0.122 J 2.70 < 0.200 Radiological Total Uranium Isotopes 30 ug/L < 0.200 0.0739 J 0.0700 J < 0.200 0.321 0.558 0.138 J 0.0947 J 0.158 J 0.221 < 0.200 0.0770 J 0.122 J 2.72 < 0.200 Chemical Fluoride 4 mg/L 0.037 J 0.125 0.015 J 0.154 0.233 7.18 4.09 0.037 J 10.8 0.067 J 2.12 7.35 1.9 6.76 0.015 J Chemical Nitrate as N 10 mg/L 2.0 16 < 0.020 < 0.020 210 320 22 23 18 0.39 39 2.0 17 550 3.7 Chemical Ammonia as N mg/L 0.0197 J 0.0207 J 0.0193 J 0.0196 J 105 66.5 7.51 2.26 38.9 4.17 0.487 15 7.84 77.5 0.0131 J VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 VOCs Benzene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 3.0 < 1.0 < 1.0 2.1 < 1.0 < 1.0 1.1 < 1.0 1.2 < 1.0 < 1.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L 2.3 150 < 1.0 < 1.0 18 1.3 < 1.0 15 27 2.8 10 3.1 6.1 1.9 89 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L < 1.0 9.5 < 1.0 < 1.0 2.8 < 1.0 < 1.0 2.4 2.5 1.1 1.9 1.1 1.3 < 1.0 1.6 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 1 of 9
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-20 W-22 W-23R W-24 W-25 W-26 W-27 W-28 W-29 W-30 W-32 W-33 W-35 W-36 W-37 Date 10/26/21 10/8/21 10/18/21 10/21/21 10/26/21 10/19/21 10/22/21 10/6/21 10/8/21 10/8/21 10/5/21 10/14/21 10/14/21 10/13/21 10/11/21 Type N N N N N N N N N N N N N N N Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 0.485 # 8.55 0.635 # 2.51 # 0.419 # 0.933 # 0 ## 7.01 3.21 # 6.37 5.72 5.46 0.639 # 4.51 0.502 #
Radiological Beta particles 50
- pCi/L 0 ## 24.5 0.988 # 12.2 0.964 # 7.26 5.28 7.16 6.80 19.9 77.2 84.0 3.23 # 8.06 1.58 #
Radiological Technetium-99 900 pCi/L 0 ## 31.1 0 ## 0 ## 0 ## 5.60 3.49 # 2.14 # 8.95 48.9 231 3.64 # 0.125 # 0 ## 0.0860 # Radiological Uranium-233/234 pCi/L 0 ## 0.727 0 ## 0 ## 0 ## 0.0743 # 0.0360 # 1.89 0.314 # 10.3 0.240 # 0.0523 # 0.0107 # 0 ## 0 ## Radiological Uranium-235/236 pCi/L 0 ## 0.220 # 0.0323 # 0 ## 0 ## 0.0622 # 0.0765 # 0.0987 # 0.0950 # 0.446 0.0384 # 0 ## 0.0607 # 0.132 # 0.0737 # Radiological Uranium-238 pCi/L 0 ## 0.302 0.0357 # 0.0168 # 0.0224 # 0.137 # 0.0631 # 0.472 0.329 2.54 0.0186 # 0.0512 # 0 ## 0 ## 0 ## Radiological Uranium-234 ug/L < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 0.0144 J < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 0.0411 J 0.0145 J 0.209 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 Radiological Uranium-238 ug/L < 0.200 0.793 < 0.200 < 0.200 < 0.200 < 0.200 0.0985 J 2.04 1.04 8.82 0.153 J < 0.200 < 0.200 < 0.200 < 0.200 Radiological Total Uranium Isotopes 30 ug/L < 0.200 0.807 < 0.200 < 0.200 < 0.200 < 0.200 0.0985 J 2.08 1.05 9.03 0.153 J < 0.200 < 0.200 < 0.200 < 0.200 Chemical Fluoride 4 mg/L 0.042 J 5.61 0.029 J 0.025 J 0.091 J 1.44 2.52 8.11 4.57 14.3 5.01 0.084 J 0.026 J 0.014 J 0.038 J Chemical Nitrate as N 10 mg/L 0.042 72 0.67 < 0.020 0.10 2.4 < 0.020 5.9 10 57 94 18 4.2 0.35 3.3 Chemical Ammonia as N mg/L 0.0427 J 45.9 0.0495 J 0.0398 J 0.249 2.19 5.15 0.277 11.7 1.38 38.9 0.0153 J 0.0248 J 0.0245 J 0.0162 J VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 VOCs Benzene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 5.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.8 < 1.0 340 1.9 < 1.0 < 1.0 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.5 < 1.0 36 < 1.0 < 1.0 < 1.0 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 2 of 9
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-38 W-39 W-40 W-41R W-42 W-43 W-44 W-45 W-46 W-47 W-48 W-49 W-50 W-51 W-52 Date 10/7/21 10/18/21 10/12/21 10/21/21 10/20/21 10/18/21 10/18/21 10/14/21 10/21/21 10/19/21 10/19/21 10/20/21 10/12/21 10/13/21 10/13/21 Type N N N N N N N N N N N N N N N Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 2.12 # 0.360 # 0 ## 0.858 # 0 ## 0 ## 0.557 # 2.49 # 1.25 # 0 ## 0 ## 2.23 # 0.966 # 1.28 # 1.20 #
Radiological Beta particles 50
- pCi/L 4.58 10.4 1.86 # 10.2 3.47 # 0 ## 3.38 # 2.22 # 37.5 51.3 13.7 0 ## 4.28 3.90 # 1.65 #
Radiological Technetium-99 900 pCi/L 1.04 # 10.4 0.0523 # 13.5 2.31 # 39.9 0.648 # 1.47 # 51.3 37.9 14.9 0 ## 0.173 # 0 ## 0 ## Radiological Uranium-233/234 pCi/L 0.295 0.0183 # 0 ## 0 ## 0.0236 # 0 ## 0 ## 0.782 0 ## 0.00116 # 0 ## 0 ## 0 ## 0 ## 0.0358 # Radiological Uranium-235/236 pCi/L 0.0217 # 0 ## 0.105 # 0.0101 # 0 ## 0 ## 0.0451 # 0 ## 0 ## 0 ## 0 ## 0 ## 0.0722 # 0 ## 0 ## Radiological Uranium-238 pCi/L 0.0851 # 0.0841 # 0 ## 0.00350 # 0 ## 0.0793 # 0.0630 # 0.225 0 ## 0 ## 0.0103 # 0.0110 # 0.0400 # 0 ## 0 ## Radiological Uranium-234 ug/L < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 0.0112 J < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 Radiological Uranium-238 ug/L 0.120 J < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 0.462 < 0.200 0.0704 J < 0.200 0.0826 J 0.180 J < 0.200 0.0922 J Radiological Total Uranium Isotopes 30 ug/L 0.120 J < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 0.473 < 0.200 0.0704 J < 0.200 0.0826 J 0.180 J < 0.200 0.0922 J Chemical Fluoride 4 mg/L 0.501 0.027 J 0.141 0.017 J 1.27 0.023 J 0.015 J 0.386 0.03 J 3.97 0.31 0.01 J 0.016 J 0.224 1.54 Chemical Nitrate as N 10 mg/L 2.6 57 4.1 46 1.6 7.4 1.7 0.24 7.7 33 5.5 < 0.020 < 0.020 0.11 0.68 Chemical Ammonia as N mg/L 0.0464 J 0.0327 J 0.342 0.0484 J 0.156 0.0248 J 0.0175 J 0.904 0.1 13.9 0.0348 J 0.0537 J 0.0252 J 0.166 0.0301 J VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 VOCs Benzene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L < 1.0 8.5 < 1.0 4.2 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 2.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.3 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.2 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L < 1.0 250 < 1.0 160 < 1.0 < 1.0 < 1.0 < 1.0 2.9 1.3 16 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L 4.0 3.7 < 1.0 8.5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 4.8 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 3 of 9
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-53 W-54 W-55 W-56 W-57 W-58 W-59 W-60 W-61 W-62 W-63 W-64 W-65 W-66 W-66 Date 10/12/21 10/12/21 10/11/21 10/11/21 10/7/21 10/11/21 10/11/21 10/15/21 10/15/21 10/19/21 10/19/21 10/19/21 10/18/21 10/18/21 10/18/21 Type N N N N N N N N N N N N N N FD Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 2.12 # 0 ## 276 309 0.771 # 4.22 17.7 0.303 # 2.43 # 1.08 # 2.07 # 5.14 0 ## 0.899 # 0.560 #
Radiological Beta particles 50
- pCi/L 1.55 # 2.06 # 61.1 72.3 1.93 # 2.33 # 10.3 2.00 # 4.11 # 0.941 # 14.2 48.8 0.229 # 2.95 # 2.22 #
Radiological Technetium-99 900 pCi/L 0 ## 0 ## 0.449 # 0.222 # 15.0 0.985 # 7.63 1.43 # 0 ## 0 ## 13.6 72.9 0.363 # 1.10 # 0 ## Radiological Uranium-233/234 pCi/L 0 ## 0.199 # 182 231 0.180 # 1.40 13.0 0.0239 # 0 ## 0 ## 0.573 0.0842 # 0 ## 0 ## 0.0119 # Radiological Uranium-235/236 pCi/L 0 ## 0.0718 # 9.38 12.2 0.0640 # 0.121 # 0.590 0.0858 # 0# 0 ## 0.0151 # 0 ## 0.0175 # 0.0386 # 0.0264 # Radiological Uranium-238 pCi/L 0 ## 0.0172 # 34.0 49.0 0.0235 # 0.128 # 2.67 0 ## 0.0180 # 0 ## 0.578 0.0914 # 0 ## 0 ## 0.0230 # Radiological Uranium-234 ug/L < 0.0500 < 0.0500 0.0340 J 0.0410 J < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 < 0.0700 3.87 4.44 < 0.0700 0.0319 J 0.286 < 0.0700 < 0.0700 < 0.0700 0.0101 J < 0.0700 < 0.0700 < 0.0700 < 0.0700 Radiological Uranium-238 ug/L < 0.200 < 0.200 117 139 0.0988 J 0.966 9.66 < 0.200 < 0.200 < 0.200 1.54 0.0877 J < 0.200 < 0.200 < 0.200 Radiological Total Uranium Isotopes 30 ug/L < 0.200 < 0.200 121 143 0.0988 J 0.998 9.95 < 0.200 < 0.200 < 0.200 1.55 0.0877 J < 0.200 < 0.200 < 0.200 Chemical Fluoride 4 mg/L 0.063 J 0.137 0.048 J 0.297 0.107 0.083 J 2.9 0.027 J 0.024 J 0.019 J 0.071 J 3.64 0.138 0.031 J 0.033 J Chemical Nitrate as N 10 mg/L 0.33 2.0 1.8 3.0 2.5 2.2 20 0.055 3.3 4.1 4.1 35 1.6 1.3 1.3 Chemical Ammonia as N mg/L 0.0245 J 0.0214 J 0.0148 J 0.0763 J 0.0298 J 3.51 7.1 0.0307 J 0.0193 J 0.0185 J 0.0192 J 12.1 0.0192 J 0.0188 J 0.0277 J VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 100 < 20 < 20 VOCs Benzene 5 ug/L 1.1 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 10 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 50 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 10 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 10 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 13 8.6 8.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 50 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 50 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 25 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 33 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 28 1.8 1.1 340 270 270 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.4 < 1.0 41 4.9 4.7 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 Page 4 of 9
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-67 W-68 W-69 W-70 W-71 W-71 W-72 W-73 W-74 W-74 W-75 W-76 W-77 W-78 W-79 Date 10/18/21 10/19/21 10/21/21 10/21/21 10/21/21 10/21/21 10/12/21 10/8/21 10/12/21 10/12/21 10/12/21 10/7/21 10/6/21 10/6/21 10/6/21 Type N N N N N FD N N N FD N N N N N Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 2.06 # 0.0923 # 0 ## 1.37 # 0.418 # 2.98 # 0 ## 0 ## 0.306 # 2.77 # 0 ## 8.71 221 0 ## 0.864 #
Radiological Beta particles 50
- pCi/L 33.4 2.61 # 0 ## 0 ## 2.35 # 2.04 # 3.80 # 1.84 # 0 ## 0.744 # 1.17 # 6.19 36.4 0 ## 2.28 #
Radiological Technetium-99 900 pCi/L 69.8 0.0281 # 0 ## 0.570 # 0.0199 # 0.395 # 0 ## 2.26 # 0.0903 # 0 ## 0.236 # 0.0261 # 2.50 # 0 ## 0 ## Radiological Uranium-233/234 pCi/L 0 ## 0 ## 0 ## 0.0582 # 0 ## 0 ## 0.276 0.153 # 0 ## 0.0432 # 0.0458 # 5.03 268 0.195 0.0283 # Radiological Uranium-235/236 pCi/L 0 ## 0 ## 0.0618 # 0.0330 # 0.101 # 0.0591 # 0.0107 # 0.0189 # 0.0333 # 0 ## 0.0187 # 0.162 # 17.0 0.138 0 ## Radiological Uranium-238 pCi/L 0 ## 0 ## 0 ## 0 ## 0.0757 # 0 ## 0.117 # 0.0894 # 0.0199 # 0 ## 0.0442 # 1.27 44.4 0.0143 # 0.0340 # Radiological Uranium-234 ug/L < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 0.0470 J < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 0.104 5.52 < 0.0700 < 0.0700 Radiological Uranium-238 ug/L < 0.200 < 0.200 < 0.200 < 0.200 0.0939 J 0.0898 J 0.266 0.133 J < 0.200 < 0.200 < 0.200 3.12 128 0.186 J < 0.200 Radiological Total Uranium Isotopes 30 ug/L < 0.200 < 0.200 < 0.200 < 0.200 0.0939 J 0.0898 J 0.266 0.133 J < 0.200 < 0.200 < 0.200 3.23 133 0.186 J < 0.200 Chemical Fluoride 4 mg/L 0.023 J 0.027 J 0.075 J 0.017 J 0.031 J 0.086 J 0.406 0.056 J 0.017 J 0.021 J 0.116 2.66 14.8 13.6 0.978 Chemical Nitrate as N 10 mg/L 14 2.8 0.35 1.6 < 0.020 < 0.020 2.4 1.3 5.5 5.5 0.21 13 4.9 3.8 3.9 Chemical Ammonia as N mg/L 1.74 0.255 0.0228 J 0.0186 J 0.0212 J 0.0194 J 0.0262 J 0.0208 J 0.0214 J 0.0386 J 0.258 0.0283 J 3.66 0.0219 J 0.0166 J VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 VOCs Benzene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 4.1 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L 1.3 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.3 1.3 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L 41 55 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 11 12 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L 7.4 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 3.2 3.1 < 1.0 26 < 1.0 < 1.0 < 1.0 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 5 of 9
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-80 W-81 W-81 W-82 W-83 W-84 W-85 W-86 W-87 W-88 W-89 W-90 W-91 W-92 Date 10/7/21 10/7/21 10/7/21 10/7/21 10/7/21 10/7/21 10/22/21 10/22/21 10/13/21 10/21/21 10/21/21 10/20/21 10/20/21 10/22/21 Type N N FD N N N N N N N N N N N Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 0 ## 0.133 # 0 ## 1.76 # 1.50 # 0 ## 2.78 # 0 ## 2.81 0.593 # 0.991 # 0.419 # 0 ## 3.35 Radiological Beta particles 50
- pCi/L 5.69 5.84 5.85 1.51 # 0.822 # 0.282 # 1.85 # 0.663 # 9.79 0.117 # 2.99 # 2.13 # 0 ## 0.885 #
Radiological Technetium-99 900 pCi/L 1.17 # 0.279 # 1.20 # 1.72 # 1.28 # 1.48 # 0 ## 0 ## 1.05 # 1.74 # 0.544 # 0.185 # 0.352 # 2.76 # Radiological Uranium-233/234 pCi/L 0.142 # 0.874 0.910 0 ## 0 ## 0 ## 0 ## 0 ## 0.0823 # 0 ## 0.107 # 0 ## 0 ## 0.0378 # Radiological Uranium-235/236 pCi/L 0 ## 0.0533 # 0.123 # 0.0551 # 0.0143 # 0.0486 # 0 ## 0 ## 0.0296 # 0.0772 # 0 ## 0 ## 0 ## 0 ## Radiological Uranium-238 pCi/L 0.0345 # 0.477 0.231 # 0 ## 0.00330 # 0.0434 # 0 ## 0.147 # 0.0689 # 0 ## 0.0119 # 0 ## 0 ## 0 ## Radiological Uranium-234 ug/L < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 0.0159 J 0.0166 J < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 Radiological Uranium-238 ug/L 0.106 J 1.41 1.35 < 0.200 < 0.200 < 0.200 0.0781 J < 0.200 0.445 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 Radiological Total Uranium Isotopes 30 ug/L 0.106 J 1.42 1.36 < 0.200 < 0.200 < 0.200 0.0781 J < 0.200 0.445 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 Chemical Fluoride 4 mg/L 0.282 0.056 J 0.053 J 0.064 J 0.115 0.092 J 0.152 0.377 0.117 0.034 J 0.067 J 0.013 J 0.014 J 0.12 Chemical Nitrate as N 10 mg/L 9.2 3.8 4.1 1.8 0.85 0.091 < 0.020 < 0.020 0.19 3.5 2.2 2.8 1.2 < 0.020 Chemical Ammonia as N mg/L 0.0378 J 0.0352 J 0.0268 J 0.0221 J 0.0243 J 0.0236 J 0.127 0.0166 J 0.027 J 0.0194 J 0.019 J 0.0165 J 0.0174 J 4.39 VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 VOCs Benzene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L 1.4 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L 58 6.2 6.3 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L 4.6 2.7 2.6 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L 4.1 1.5 1.5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 34 2.4 1.2 < 1.0 < 1.0 < 1.0 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 6.6 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 6 of 9
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-93 W-94 W-95 W-96 W-97 W-97 W-98 W-99 W-100 W-102 W-103 W-104 W-105 W-106 W-107 Date 10/6/21 10/26/21 10/26/21 10/25/21 10/25/21 10/25/21 10/19/21 10/15/21 10/15/21 10/8/21 10/18/21 10/25/21 10/25/21 10/18/21 10/26/21 Type N N N N N FD N N N N N N N N N Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 2.17 # 3.82 # 2.57 # 0.893 # 1.69 # 0.808 # 2.36 # 1.01 # 2.75 # 6.57 0 ## 0.457 # 0.634 # 1.44 # 1.64 #
Radiological Beta particles 50
- pCi/L 3.21 # 5.78 3.99 2.22 # 10.3 12.9 16.3 40.6 23.9 80.6 7.53 4.20 # 2.20 # 0.500 # 3.52 #
Radiological Technetium-99 900 pCi/L 0 ## 0 ## 0 ## 0 ## 14.7 15.9 6.30 57.7 18.0 119 40.2 1.71 # 0.544 # 2.54 # 0 ## Radiological Uranium-233/234 pCi/L 0.264 0 ## 0 ## 0.0564 # 0 ## 0.0789 # 0 ## 0.314 # 0.0196 # 1.81 0 ## 0.111 # 0 ## 0.195 # 0 ## Radiological Uranium-235/236 pCi/L 0.101 # 0 ## 0 ## 0.0586 # 0.0222 # 0 ## 0.0516 # 0.0255 # 0.0619 # 0.136 0 ## 0.0696 # 0 ## 0.103 # 0.125 # Radiological Uranium-238 pCi/L 0.0520 # 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0.130 # 0 ## 0.396 0 ## 0.0806 # 0.0794 # 0.122 # 0.0573 # Radiological Uranium-234 ug/L < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 0.0312 J < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 Radiological Uranium-238 ug/L < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 0.243 0.180 J 1.78 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 Radiological Total Uranium Isotopes 30 ug/L < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 0.243 0.180 J 1.81 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 Chemical Fluoride 4 mg/L 0.036 J 0.049 J 0.233 0.092 J 0.481 0.451 0.019 J 2.96 1.91 3.74 0.032 J 0.064 J 0.376 0.154 0.082 J Chemical Nitrate as N 10 mg/L 4.9 0.089 0.076 < 0.020 4.5 4.2 11 7.8 7.6 95 10 6.4 0.089 0.084 0.089 Chemical Ammonia as N mg/L 0.0174 J 0.275 0.203 0.241 7.35 6.65 0.356 3.25 8.27 35.1 0.387 1.45 0.721 1.58 0.334 VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 VOCs Benzene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L < 1.0 5.8 2.4 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 5.1 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L 32 < 1.0 < 1.0 1.3 5.6 5.9 < 1.0 < 1.0 < 1.0 48 24 3.1 < 1.0 < 1.0 < 1.0 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L 4.0 < 1.0 < 1.0 2.0 1.7 1.7 < 1.0 < 1.0 < 1.0 6.4 5.2 1.9 < 1.0 < 1.0 < 1.0 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 < 1.0 4.2 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 3.7 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 7 of 9
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-108 W-108 W-109 W-110 W-111 W-112 W-113 W-114 W-115 W-116 W-117 W-118 W-119 W-120 W-121 Date 10/25/21 10/25/21 10/26/21 10/26/21 10/26/21 10/26/21 10/15/21 10/15/21 10/14/21 10/14/21 10/14/21 10/14/21 10/18/21 10/15/21 10/15/21 Type N FD N N N N N N N N N N N N N Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 1.96 # 0 ## 1.47 # 2.35 0.989 # 0 ## 0.642 # 0.602 # 0 ## 1.24 # 0.596 # 1.08 # 2.25 # 1.26 # 0 ##
Radiological Beta particles 50
- pCi/L 2.55 # 1.92 # 0 ## 0.581 # 1.15 # 0 ## 1.04 # 2.37 # 0.991 # 0 ## 0.859 # 0 ## 2.00 # 3.56 # 5.06 Radiological Technetium-99 900 pCi/L 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 1.01 # 0.900 # 0.0562 # 0.927 # 0 ## 1.61 # 0 ## 1.01 # 1.62 #
Radiological Uranium-233/234 pCi/L 0.00115 # 0.142 # 0.125 # 0.185 # 0.0169 # 0 ## 0 ## 0.0697 # 0.0547 # 0 ## 0 ## 0.0332 # 0 ## 0.393 0.0102 # Radiological Uranium-235/236 pCi/L 0# 0.0368 # 0.0839 # 0 ## 0.0932 # 0.0195 # 0 ## 0.0380 # 0.0935 # 0.108 # 0 ## 0.0386 # 0.0153 # 0 ## 0.0118 # Radiological Uranium-238 pCi/L 0 ## 0 ## 0.0414 # 0.170 # 0.0769 # 0.00122 # 0.118 # 0 ## 0.0575 # 0 ## 0 ## 0.0325 # 0 ## 0.278 # 0 ## Radiological Uranium-234 ug/L < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 < 0.0700 Radiological Uranium-238 ug/L < 0.200 < 0.200 < 0.200 0.0693 J 0.136 J 0.137 J < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 0.623 < 0.200 Radiological Total Uranium Isotopes 30 ug/L < 0.200 < 0.200 < 0.200 0.0693 J 0.136 J 0.137 J < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 0.623 < 0.200 Chemical Fluoride 4 mg/L 0.098 J 0.087 J 0.051 J 0.032 J 0.012 J 0.076 J 0.181 0.247 0.026 J 0.025 J 0.029 J 0.047 J 0.016 J 0.083 J 0.057 J Chemical Nitrate as N 10 mg/L < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 0.077 2.2 1.1 3.4 5.9 2.4 3.9 1.5 4.5 2.5 Chemical Ammonia as N mg/L 0.158 0.148 0.0756 J 0.032 J 0.031 J 0.809 0.025 J 0.0237 J 0.0148 J 0.0159 J 0.0207 J 0.0138 J 0.0635 J 0.0228 J 0.0484 J VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 VOCs Benzene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L 1.5 1.6 1.5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.3 < 1.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 2.2 85 74 340 82 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 2.1 2.3 17 2.4 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 8 of 9
Table T1 - Groundwater Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Well W-122 W-123 W-124 W-125 W-126 Date 10/13/21 10/5/21 10/25/21 10/25/21 10/25/21 Type N N N N N Group Analyte MCL note Units Radiological Alpha particles 15
- pCi/L 3.49 5.31 0 ## 2.74 # 4.23 Radiological Beta particles 50
- pCi/L 1.45 # 239 1.59 # 6.77 4.02 Radiological Technetium-99 900 pCi/L 0.494 # 424 0 ## 1.15 # 0 ##
Radiological Uranium-233/234 pCi/L 0 ## 0.333 0 ## 0.0880 # 0 ## Radiological Uranium-235/236 pCi/L 0 ## 0.0432 # 0.0128 # 0.0279 # 0 ## Radiological Uranium-238 pCi/L 0 ## 0.421 0.0297 # 0.0250 # 0 ## Radiological Uranium-234 ug/L < 0.0500 < 0.0500 < 0.0500 < 0.0500 < 0.0500 Radiological Uranium-235 ug/L < 0.0700 0.0118 J < 0.0700 < 0.0700 < 0.0700 Radiological Uranium-238 ug/L < 0.200 1.60 < 0.200 < 0.200 < 0.200 Radiological Total Uranium Isotopes 30 ug/L < 0.200 1.61 < 0.200 < 0.200 < 0.200 Chemical Fluoride 4 mg/L 0.056 J 8.13 0.056 J 0.257 0.251 Chemical Nitrate as N 10 mg/L < 0.020 120 < 0.020 0.073 0.060 Chemical Ammonia as N mg/L 0.0248 J 95 0.173 5.42 2.9 VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 VOCs Benzene 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropane 0.2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane 0.05 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene 600 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,4-Dichlorobenzene 75 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs 1,2-Dichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene 7 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene 70 ug/L < 1.0 1.9 < 1.0 < 1.0 < 1.0 VOCs trans-1,2-Dichloroethene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Ethylbenzene 700 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 VOCs (1-Methylethyl)-Benzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene 100 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene 5 ug/L < 1.0 23 < 1.0 < 1.0 < 1.0 VOCs Toluene 1000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene 70 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane 200 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane 5 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene 5 ug/L < 1.0 7.7 < 1.0 < 1.0 < 1.0 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride 2 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Xylenes, Total 10000 ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Notes: MCL - Maximum Contaminant Level
* - site-specific action level Concentrations in orange shaded cells exceed their MCL pCi/L - picocuries per liter ug/L - micrograms per liter mg/L - milligrams per liter N - Normal sample FD - Field duplicate sample Bold concentrations indicate detections J - Result below reporting limit
# - value is below minimum detectable concentration
## - value shown as zero reported by analytical laboratory as a negative number VOCs - volatile organic compounds Page 9 of 9
Table T2 - Field Groundwater Stabilization Parameters Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Oxidation Reduction Field Parameter Dissolved Oxygen Potential pH Specific Conductivity Temperature Turbidity Unit mg/L mv SU us/cm degrees C NTU Location ID Date W-RW1 10/14/2021 4.94 20.01 5.57 99 23.88 0.17 W-RW2 10/21/2021 0.8 295.1 5.13 199 20.16 0 W-3A 10/25/2021 0.18 133.07 4.87 24 19.04 0 W-4R 10/25/2021 0.24 78.48 5.69 162 20.58 4.01 W-6 10/8/2021 0.3 156.03 6.34 2318 23.11 5.16 W-7A 10/5/2021 0.3 -26.64 7.05 3164 23.73 10.79 W-10 10/5/2021 0.27 115.75 6.22 528 24.4 0.87 W-11 10/5/2021 0.33 -11.45 5.75 272 23.09 5.84 W-13R 10/5/2021 0.6 123.73 6.33 765 24.43 23.44 W-14 10/18/2021 0.28 -76.11 6.23 551 21.59 0.94 W-15 10/19/2021 0.28 182.22 5.99 556 21.35 0 W-16 10/19/2021 0.22 9.6 6.16 380 21.3 3.53 W-17 10/12/2021 0.28 -82.63 6.48 438 22.57 4.29 W-18R 10/8/2021 0.3 104.23 7.43 4704 23.18 0.28 W-19B 10/20/2021 4.38 272.09 5.35 80 19.65 0 W-20 10/26/2021 0.3 -36.9 5.6 136 19.54 0 W-22 10/8/2021 0.27 225.01 5.61 1317 24.59 2.39 W-23R 10/18/2021 4.15 284.23 4.92 56 18.63 0 W-24 10/21/2021 0.18 -122.52 5.57 58 23.13 8.67 W-25 10/26/2021 0.19 -246.16 6.7 150 18.48 10.26 W-26 10/19/2021 0.61 60.72 6.08 227 19.1 0 W-27 10/22/2021 0.29 -102.87 6.23 358 20.73 0.16 W-28 10/6/2021 0.84 440.38 6.02 810 25.26 17.54 W-29 10/8/2021 0.27 -15.49 7.27 412 24.32 0.04 W-30 10/8/2021 0.19 4.65 5.89 849 25.35 0.25 W-32 10/5/2021 0.33 -19.6 7.11 1259 23.64 7.94 W-33 10/14/2021 0.81 13.47 5.96 239 21.91 0.13 W-35 10/14/2021 4.49 5.41 6.08 151 24.01 1.39 W-36 10/13/2021 0.23 196.53 5.16 41 22.6 3.12 W-37 10/11/2021 3.66 234.44 5.64 137 23.91 0.73 W-38 10/7/2021 3.16 63.68 5.45 174 25.21 1.28 W-39 10/18/2021 2.32 48.62 5.72 617 24.2 0.16 W-40 10/12/2021 0.53 -115.25 6.25 92 23.79 6.43 W-41R 10/21/2021 3.72 107.39 5.63 534 19.46 0 W-42 10/20/2021 0.63 330.66 4.8 61 18.69 0 W-43 10/18/2021 3.27 61.78 5.46 110 23.33 0.87 W-44 10/18/2021 3.53 68.22 5.5 92 20 0 W-45 10/14/2021 0.35 -209.91 6.34 155 24.57 1.07 W-46 10/21/2021 0.28 259.21 5.46 196 19.37 1.62 W-47 10/19/2021 0.31 200.47 5.9 542 18.27 0 W-48 10/19/2021 2.38 81.07 5.65 126 19.5 0.92 W-49 10/20/2021 0.45 126.16 4.84 31 20.27 3.38 W-50 10/12/2021 0.44 -108.88 5.15 28 22.88 44.73 W-51 10/13/2021 0.14 -198.98 6.74 234 26.12 2.21 W-52 10/13/2021 0.33 70.65 5.78 156 26.24 1.16 W-53 10/12/2021 0.21 -93.42 6.12 220 25.63 1.92 W-54 10/12/2021 3.03 76.3 5.83 142 24.78 6.38 W-55 10/11/2021 4.25 216.56 5.71 136 24.7 1.55 W-56 10/11/2021 3.19 224.17 5.7 135 25.93 9.36 W-57 10/7/2021 2.86 219.53 5.58 139 26.78 3.46 W-58 10/11/2021 0.19 187.19 5.96 192 26.19 0.68 W-59 10/11/2021 0.58 231.09 6.34 409 26.37 3.81 W-60 10/15/2021 0.55 -130.94 6.14 111 19.87 32.49 W-61 10/15/2021 4.15 85.67 5.55 125 20.97 3.84 W-62 10/19/2021 3.57 121.02 4.89 87 17.89 0 W-63 10/19/2021 0.54 60.25 6.65 393 21.97 8.83 W-64 10/19/2021 0.3 228.03 5.64 509 18.46 0 W-65 10/18/2021 0.45 -12.94 6.15 119.99 20.4 0 W-66 10/18/2021 0.65 37.48 5.59 85 22.19 4.38 W-67 10/18/2021 0.28 217.14 5.46 210 18.94 0 W-68 10/19/2021 4.95 102.25 4.98 88 18.23 0 W-69 10/21/2021 0.26 119.67 5.37 73 23.69 5.26 W-70 10/21/2021 5.78 321.22 4.86 56 21.3 2.41 W-71 10/21/2021 0.3 42.11 5.43 33 21.79 5.47 W-72 10/12/2021 1.37 195.68 5.89 183 23.77 3.71 W-73 10/8/2021 2.59 250.9 5.6 132 25.35 3.51 W-74 10/12/2021 1.48 272.47 5.12 128 22.69 0.15 W-75 10/12/2021 0.18 20.77 5.67 140 24.43 0.19 W-76 10/7/2021 2.07 74.55 4.98 196 26.82 0.38 W-77 10/6/2021 1.45 -115.26 11.52 5786 26.3 0.71 W-78 10/6/2021 4.12 216.98 6.02 210 26.13 1.11 W-79 10/6/2021 4.43 222.83 5.87 180 27.06 2.78 W-80 10/7/2021 3.28 225.84 5.6 427 27.29 7.62 W-81 10/7/2021 0.58 4.93 6.54 488 23.27 0.05 W-82 10/7/2021 0.93 230.76 4.95 174 23.76 4.05 W-83 10/7/2021 1.08 -21.93 6.04 184 23.6 1.62 W-84 10/7/2021 0.35 -155.67 6.14 224 25.84 16.5 W-85 10/22/2021 0.46 -231.56 6.76 275 21.28 0.09 W-86 10/22/2021 0.31 -76.82 5.99 278 19.93 12.95 W-87 10/13/2021 0.24 -66.32 6.34 108 24.25 56.93 W-88 10/21/2021 6.51 91.02 5.63 76 19.32 0.19 W-89 10/21/2021 6.08 101.09 5.5 65 20.46 0.25 W-90 10/20/2021 5.92 265.02 5.15 74 19.8 2.47 W-91 10/20/2021 5.37 269.62 5.14 60 20.59 0.59 W-92 10/22/2021 0.2 -74.97 5.98 253 19.16 0 W-93 10/6/2021 1.4 255.85 5.35 122 23.29 1.98 W-94 10/26/2021 0.21 -46.79 6 164 17.69 0.11 W-95 10/26/2021 0.19 -86.9 6.23 233 18.16 2.9 W-96 10/25/2021 0.21 -209.23 6.36 276 19.21 0.68 W-97 10/25/2021 0.35 -93.73 6.31 250 19.67 0 W-98 10/19/2021 0.58 261.54 5.15 168 20.58 1.25 W-99 10/15/2021 0.36 53.99 6.62 561 23.65 1.55 W-100 10/15/2021 0.9 -17.5 6.32 511 24.55 1.17 W-102 10/8/2021 0.26 -8.37 6.97 1278 23.48 4.92 W-103 10/18/2021 1.4 260.71 5.34 167 19.11 0 W-104 10/25/2021 0.16 -4.87 5.6 216 21.41 0.83 W-105 10/25/2021 0.2 -116.79 6.41 362 19.25 0.42 W-106 10/18/2021 0.16 -83.91 5.99 374 19.39 1.89 W-107 10/26/2021 0.21 -66.46 6.07 173 18.6 4.55 W-108 10/25/2021 0.19 -73.77 6.18 178 19.43 2.16 W-109 10/26/2021 0.27 -196.81 6.36 104 18.42 9.59 W-110 10/26/2021 0.14 -112.35 5.77 45 18.89 4.62 W-111 10/26/2021 0.2 126.88 5.03 26 18.37 0 Page 1 of 2
Table T2 - Field Groundwater Stabilization Parameters Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Oxidation Reduction Field Parameter Dissolved Oxygen Potential pH Specific Conductivity Temperature Turbidity Unit mg/L mv SU us/cm degrees C NTU Location ID Date W-112 10/26/2021 0.23 -104.18 6.29 268 17.92 0.86 W-113 10/15/2021 0.43 30.33 5.98 158 19.58 1.06 W-114 10/15/2021 1.26 65.19 5.41 94 21.64 2.73 W-115 10/14/2021 3.17 242.57 5.35 98 18.84 4.52 W-116 10/14/2021 5.12 118.8 5.22 123 19.73 0 W-117 10/14/2021 2.98 112.03 5.73 97 19.77 4.96 W-118 10/14/2021 2.48 262.4 5.16 94 19.49 0.55 W-119 10/18/2021 0.28 174.88 4.91 81 18.04 0 W-120 10/15/2021 0.75 -48.47 6.11 161 22.01 2.11 W-121 10/15/2021 0.52 -14.11 5.61 119 23.53 0.25 W-122 10/13/2021 0.25 -68.64 5.67 49 22.61 6.9 W-123 10/5/2021 0.3 39.99 7.64 1642 23.43 3.07 W-124 10/25/2021 0.41 -173.28 6.07 145 19.72 0.32 W-125 10/25/2021 0.2 -122.72 6.15 396 19.14 6.42 W-126 10/25/2021 0.27 -228.74 6.46 336 19.35 12.26 Notes: mg/L - milligrams per liter mv - millivolts SU - standard units us/cm - microsiemens per centimeter C - Centirgade NTU - Nephelometric Turbidity Unit Page 2 of 2
Table T3 - Surface Water Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SW-11 SW-12 SW-13 SW-14 SW-16 SW-17 SW-17 SW-18 Type N N N N N N FD N Date 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/18/2019 7/18/2019 7/16/2019 Group Analyte Unit MCL Chemical Ammonia mg/L 0.546 0.228 0.249 0.233 4.35 0.290 0.290 0.208 Chemical Fluoride mg/L 4 0.146 0.296 0.226 0.234 1.69 0.460 0.471 0.309 Chemical Nitrate as N mg/L 10 < 0.020 < 0.020 < 0.020 0.63 0.48 3.8 3.8 5.7 Metals Aluminum ug/L 634 118 J 212 91.3 J 155 J 144 J 141 J 721 Metals Antimony ug/L 6 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 Metals Arsenic ug/L 10 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 Metals Barium ug/L 2000 113 52.2 101 66 12.3 85.3 81.8 91.8 Metals Beryllium ug/L 4 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 Metals Cadmium ug/L 5 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 Metals Calcium ug/L 3380 6540 7900 6570 4690 10000 9770 8150 Metals Chromium ug/L 100 1.47 J < 10.0 1.25 J < 10.0 2.64 J < 10.0 < 10.0 1.19 J Metals Cobalt ug/L 3.96 J 1.01 J 2.35 J < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 Metals Copper ug/L 1300 3.37 J < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 Metals Iron ug/L 2410 1110 3820 1180 614 715 682 1260 Metals Lead ug/L 15 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 Metals Magnesium ug/L 1030 1340 1490 1240 326 2280 2130 2140 Metals Manganese ug/L 944 1320 1860 275 26.8 86.5 82.9 41 Metals Mercury ug/L 2 0.081 J < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 < 0.200 Metals Nickel ug/L 1.82 J < 5.00 < 5.00 < 5.00 3.5 J 33.4 31.4 14.8 Metals Potassium ug/L 1920 1690 1850 1620 816 2710 2640 2280 Metals Selenium ug/L 50 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 Metals Silver ug/L < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 < 5.00 Metals Sodium ug/L 1980 4860 3780 4530 1090 11300 11200 9550 Metals Thallium ug/L 2 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 Metals Vanadium ug/L 4.62 J < 5.00 1.79 J < 5.00 < 5.00 < 5.00 < 5.00 1.84 J Metals Zinc ug/L 15.2 J 5.55 J 11.4 J 13 J 44.6 15.6 J 14.7 J 15.3 J Radiological Technetium-99 pCi/L 900 0 ## 0 ## 0 ## 3.73 # 0 ## 0 ## 0 ## 1.29 # Radiological Uranium-233/234 pCi/L 0.296 0.0491 # 0.0159 # 0.575 3.34 0.145 # 0.204 # 0.285 # Radiological Uranium-235/236 pCi/L 0.0959 # 0.00914 # 0# 0.101 # 0.145 0 ## 0# 0.0501 # Radiological Uranium-238 pCi/L 0.105 # 0.101 # 0 ## 0.0793 # 0.710 0.150 # 0.0925 # 0.159 # Radiological Uranium-234 ug/L < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 Radiological Uranium-235 ug/L < 0.070 < 0.070 < 0.070 < 0.070 0.0682 J < 0.070 < 0.070 < 0.070 Radiological Uranium-238 ug/L 0.365 < 0.200 0.134 J 0.297 1.71 0.246 0.229 0.304 Radiological Total Uranium ug/L 30 0.365 < 0.2 0.134 0.297 1.78 0.246 0.229 0.304 SVOCs 1,1'-Biphenyl ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 2,4,5-Trichlorophenol ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 2,4,6-Trichlorophenol ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 2,4-Dichlorophenol ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs 2,4-Dimethylphenol ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 2,4-Dinitrophenol ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 SVOCs 2,4-Dinitrotoluene ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs 2,6-Dinitrotoluene ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs 2-Chloronaphthalene ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 2-Chlorophenol ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 2-Methylnaphthalene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs 2-Methylphenol ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 2-Nitroaniline ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs 2-Nitrophenol ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 3,3'-Dichlorobenzidine ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 3-Nitroaniline ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs 4,6-Dinitro-2-methylphenol ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 SVOCs 4-Bromophenyl phenyl ether ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 4-Chloro-3-methylphenolug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 4-Chloroaniline ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs 4-Chlorophenyl phenyl ether ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs 4-Methylphenol ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 Page 1 of 6
Table T3 - Surface Water Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SW-11 SW-12 SW-13 SW-14 SW-16 SW-17 SW-17 SW-18 Type N N N N N N FD N Date 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/18/2019 7/18/2019 7/16/2019 SVOCs 4-Nitroaniline ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs 4-Nitrophenol ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 SVOCs Acenaphthene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Acenaphthylene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Acetophenone ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Anthracene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Atrazine ug/L 3 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Benz(a)anthracene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Benzaldehyde ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs Benzo(a)pyrene ug/L 0.2 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Benzo(b)fluoranthene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Benzo(g,h,i)perylene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Benzo(k)fluoranthene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Bis(2-chloroethoxy)methane ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Bis(2-chloroethyl)ether ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Bis(2-chloroisopropyl)etherug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Bis(2-ethylhexyl)phthalateug/L 6 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Butyl benzyl phthalate ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Caprolactam ug/L < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 SVOCs Carbazole ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Chrysene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Dibenz(a,h)anthracene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Dibenzofuran ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Diethyl phthalate ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Dimethyl phthalate ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Di-n-butyl phthalate ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Di-n-octyl phthalate ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Fluoranthene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Fluorene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Hexachlorobenzene ug/L 1 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Hexachlorobutadiene ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Hexachlorocyclopentadiene ug/L 50 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 SVOCs Hexachloroethane ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Indeno(1,2,3-cd)pyrene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Isophorone ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Naphthalene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Nitrobenzene ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs N-Nitrosodi-n-propylamine ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs N-Nitrosodiphenylamine ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Pentachlorophenol ug/L 1 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 SVOCs Phenanthrene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 SVOCs Phenol ug/L < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 < 4.0 SVOCs Pyrene ug/L < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 < 0.80 VOCs (1-Methylethyl)-Benzeneug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,1-Trichloroethane ug/L 200 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2,2-Tetrachloroethaneug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1,2-Trichloroethane ug/L 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,1-Dichloroethene ug/L 7 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2,4-Trichlorobenzene ug/L 70 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromo-3-chloropropaneug/L 0.2 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dibromoethane ug/L 0.05 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichlorobenzene ug/L 600 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloroethane ug/L 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,2-Dichloropropane ug/L 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 2 of 6
Table T3 - Surface Water Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SW-11 SW-12 SW-13 SW-14 SW-16 SW-17 SW-17 SW-18 Type N N N N N N FD N Date 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/18/2019 7/18/2019 7/16/2019 VOCs 1,4-Dichlorobenzene ug/L 75 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs 2-Hexanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 VOCs Acetone ug/L < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 VOCs Benzene ug/L 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Carbon disulfide ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Carbon tetrachloride ug/L 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chlorobenzene ug/L 100 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,2-Dichloroethene ug/L 70 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Dichlorodifluoromethaneug/L < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 VOCs Ethylbenzene ug/L 700 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 < 5.0 VOCs Methylene chloride ug/L 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Styrene ug/L 100 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Tetrachloroethene ug/L 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 16 16 14 VOCs Toluene ug/L 1000 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,2-Dichloroetheneug/L 100 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Trichloroethene ug/L 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.0 1.0 < 1.0 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Vinyl chloride ug/L 2 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 VOCs Xylenes, Total ug/L 10000 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 Page 3 of 6
Table T3 - Surface Water Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SW-19 SW-20 SW-21 SW-21 SW-22 SW-22 SW-23 Type N N N N N N N Date 7/17/2019 7/16/2019 7/15/2019 7/17/2019 7/15/2019 7/17/2019 7/16/2019 Group Analyte Unit MCL Chemical Ammonia mg/L 0.376 0.640 0.244 NA 0.187 NA 0.459 Chemical Fluoride mg/L 4 0.154 0.494 0.433 NA 0.432 NA 4.94 Chemical Nitrate as N mg/L 10 < 0.020 < 0.020 < 0.02 NA < 0.02 NA 7.3 Metals Aluminum ug/L 337 234 116 J NA 102 J NA 203 Metals Antimony ug/L 6 < 20.0 < 20.0 < 20.0 NA < 20.0 NA < 20.0 Metals Arsenic ug/L 10 < 30.0 < 30.0 < 30.0 NA < 30.0 NA < 30.0 Metals Barium ug/L 2000 67.1 66.3 28.3 NA 34.5 NA 84.4 Metals Beryllium ug/L 4 < 5.00 < 5.00 < 5.00 NA < 5.00 NA < 5.00 Metals Cadmium ug/L 5 < 5.00 < 5.00 < 5.00 NA < 5.00 NA < 5.00 Metals Calcium ug/L 4010 7450 3480 NA 3760 NA 16400 Metals Chromium ug/L 100 < 10.0 < 10.0 < 10.0 NA < 10.0 NA < 10.0 Metals Cobalt ug/L 5.38 2.24 J < 5.00 NA < 5.00 NA < 5.00 Metals Copper ug/L 1300 < 20.0 < 20.0 < 20.0 NA < 20.0 NA < 20.0 Metals Iron ug/L 3890 4710 612 NA 844 NA 69.7 J Metals Lead ug/L 15 < 20.0 < 20.0 < 20.0 NA < 20.0 NA < 20.0 Metals Magnesium ug/L 1270 1720 1020 NA 1110 NA 4800 Metals Manganese ug/L 528 642 107 NA 189 NA 73.3 Metals Mercury ug/L 2 < 0.200 < 0.200 < 0.200 NA < 0.200 NA < 0.200 Metals Nickel ug/L 3.17 J 1.7 J 1.86 J NA 1.83 J NA 1.68 J Metals Potassium ug/L 3010 3780 1310 NA 1420 NA 6320 Metals Selenium ug/L 50 < 30.0 < 30.0 < 30.0 NA < 30.0 NA < 30.0 Metals Silver ug/L < 5.00 < 5.00 < 5.00 NA < 5.00 NA < 5.00 Metals Sodium ug/L 918 4200 3590 NA 3810 NA 48900 Metals Thallium ug/L 2 < 20.0 < 20.0 < 20.0 NA < 20.0 NA < 20.0 Metals Vanadium ug/L 2.25 J 1.57 J < 5.00 NA < 5.00 NA 1.03 J Metals Zinc ug/L 8.82 J 7.65 J 5.61 J NA 6.12 J NA 4.54 J Radiological Technetium-99 pCi/L 900 0 ## 0 ## NA 0 ## NA 0 ## 13.6 # Radiological Uranium-233/234 pCi/L 0.587 2.35 0.0905 # NA 0.187 # NA 0.0557 # Radiological Uranium-235/236 pCi/L 0.0192 # 0.123 0.0804 # NA 0# NA 0 ## Radiological Uranium-238 pCi/L 0.168 # 0.626 0.0508 # NA 0.0611 # NA 0.103 # Radiological Uranium-234 ug/L < 0.050 < 0.050 < 0.050 NA < 0.050 NA < 0.050 Radiological Uranium-235 ug/L 0.0174 J 0.0274 J < 0.070 NA < 0.070 NA < 0.070 Radiological Uranium-238 ug/L 0.507 1.11 0.16 J NA 0.199 J NA 0.0673 J Radiological Total Uranium ug/L 30 0.524 1.14 0.160 NA 0.199 NA 0.0673 SVOCs 1,1'-Biphenyl ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 2,4,5-Trichlorophenol ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 2,4,6-Trichlorophenol ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 2,4-Dichlorophenol ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs 2,4-Dimethylphenol ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 2,4-Dinitrophenol ug/L < 20 < 20 < 20 NA < 20 NA < 20 SVOCs 2,4-Dinitrotoluene ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs 2,6-Dinitrotoluene ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs 2-Chloronaphthalene ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 2-Chlorophenol ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 2-Methylnaphthalene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs 2-Methylphenol ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 2-Nitroaniline ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs 2-Nitrophenol ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 3,3'-Dichlorobenzidine ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 3-Nitroaniline ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs 4,6-Dinitro-2-methylphenol ug/L < 20 < 20 < 20 NA < 20 NA < 20 SVOCs 4-Bromophenyl phenyl ether ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 4-Chloro-3-methylphenolug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 4-Chloroaniline ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs 4-Chlorophenyl phenyl ether ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs 4-Methylphenol ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 Page 4 of 6
Table T3 - Surface Water Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SW-19 SW-20 SW-21 SW-21 SW-22 SW-22 SW-23 Type N N N N N N N Date 7/17/2019 7/16/2019 7/15/2019 7/17/2019 7/15/2019 7/17/2019 7/16/2019 SVOCs 4-Nitroaniline ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs 4-Nitrophenol ug/L < 20 < 20 < 20 NA < 20 NA < 20 SVOCs Acenaphthene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Acenaphthylene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Acetophenone ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Anthracene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Atrazine ug/L 3 < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Benz(a)anthracene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Benzaldehyde ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs Benzo(a)pyrene ug/L 0.2 < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Benzo(b)fluoranthene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Benzo(g,h,i)perylene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Benzo(k)fluoranthene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Bis(2-chloroethoxy)methane ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Bis(2-chloroethyl)ether ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Bis(2-chloroisopropyl)etherug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Bis(2-ethylhexyl)phthalateug/L 6 < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Butyl benzyl phthalate ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Caprolactam ug/L < 8.0 < 8.0 <8 NA <8 NA < 8.0 SVOCs Carbazole ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Chrysene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Dibenz(a,h)anthracene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Dibenzofuran ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Diethyl phthalate ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Dimethyl phthalate ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Di-n-butyl phthalate ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Di-n-octyl phthalate ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Fluoranthene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Fluorene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Hexachlorobenzene ug/L 1 < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Hexachlorobutadiene ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Hexachlorocyclopentadiene ug/L 50 < 20 < 20 < 20 NA < 20 NA < 20 SVOCs Hexachloroethane ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Indeno(1,2,3-cd)pyrene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Isophorone ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Naphthalene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Nitrobenzene ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs N-Nitrosodi-n-propylamine ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs N-Nitrosodiphenylamine ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Pentachlorophenol ug/L 1 < 20 < 20 < 20 NA < 20 NA < 20 SVOCs Phenanthrene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 SVOCs Phenol ug/L < 4.0 < 4.0 <4 NA <4 NA < 4.0 SVOCs Pyrene ug/L < 0.80 < 0.80 < 0.8 NA < 0.8 NA < 0.80 VOCs (1-Methylethyl)-Benzeneug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,1,1-Trichloroethane ug/L 200 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,1,2,2-Tetrachloroethaneug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,1,2-Trichloroethane ug/L 5 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,1-Dichloroethane ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,1-Dichloroethene ug/L 7 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,2,4-Trichlorobenzene ug/L 70 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,2-Dibromo-3-chloropropaneug/L 0.2 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,2-Dibromoethane ug/L 0.05 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,2-Dichlorobenzene ug/L 600 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,2-Dichloroethane ug/L 5 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,2-Dichloropropane ug/L 5 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 1,3-Dichlorobenzene ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 Page 5 of 6
Table T3 - Surface Water Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SW-19 SW-20 SW-21 SW-21 SW-22 SW-22 SW-23 Type N N N N N N N Date 7/17/2019 7/16/2019 7/15/2019 7/17/2019 7/15/2019 7/17/2019 7/16/2019 VOCs 1,4-Dichlorobenzene ug/L 75 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs 2-Butanone ug/L < 10 < 10 < 10 NA < 10 NA < 10 VOCs 2-Hexanone ug/L < 10 < 10 < 10 NA < 10 NA < 10 VOCs 4-Methyl-2-pentanone ug/L < 10 < 10 < 10 NA < 10 NA < 10 VOCs Acetone ug/L < 20 < 20 < 20 NA < 20 NA < 20 VOCs Benzene ug/L 5 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Bromodichloromethane ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Bromoform ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Bromomethane ug/L < 2.0 < 2.0 <2 NA <2 NA < 2.0 VOCs Carbon disulfide ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Carbon tetrachloride ug/L 5 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Chlorobenzene ug/L 100 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Chloroethane ug/L < 2.0 < 2.0 <2 NA <2 NA < 2.0 VOCs Chloroform ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Chloromethane ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs cis-1,2-Dichloroethene ug/L 70 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs cis-1,3-Dichloropropene ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Cyclohexane ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Dibromochloromethane ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Dichlorodifluoromethaneug/L < 2.0 < 2.0 <2 NA <2 NA < 2.0 VOCs Ethylbenzene ug/L 700 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Methyl acetate ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Methyl tert-butyl ether ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Methylcyclohexane ug/L < 5.0 < 5.0 <5 NA <5 NA < 5.0 VOCs Methylene chloride ug/L 5 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Styrene ug/L 100 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Tetrachloroethene ug/L 5 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Toluene ug/L 1000 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs trans-1,2-Dichloroetheneug/L 100 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs trans-1,3-Dichloropropene ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Trichloroethene ug/L 5 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Trichlorofluoromethane ug/L < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Vinyl chloride ug/L 2 < 1.0 < 1.0 <1 NA <1 NA < 1.0 VOCs Xylenes, Total ug/L 10000 < 1.0 < 1.0 <1 NA <1 NA < 1.0 Notes: MCL - Maximum Contaminant Level Concentrations in orange shaded cells exceed their MCL pCi/L - picocuries per liter ug/L - micrograms per liter mg/L - milligrams per liter N - Normal sample FD - Field duplicate sample Bold concentrations indicate detections J - Result below reporting limit
# - value is below minimum detectable concentration
## - value shown as zero reported by analytical laboratory as a negative number SVOCs - semivolatile organic compounds VOCs - volatile organic compounds NA - not analyzed Page 6 of 6
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-11 SED-12 SED-13 SED-14 SED-15 SED-16 SED-16 SED-16 SED-16 SED-17 SED-17 SED-18 SED-19 SED-19 SED-19 SED-19 SED-19 SED-20 SED-20 SED-20 SED-20 SED-20 SED-21 SED-21 SED-21 SED-21 Depth 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 18 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in Type N N N N N N N N N N FD N N N N FD N N N N N N N N N N Date 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/16/2019 7/17/2019 11/18/2020 11/18/2020 11/18/2020 7/18/2019 7/18/2019 7/16/2019 7/17/2019 12/2/2020 12/2/2020 12/2/2020 12/2/2020 7/16/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 7/15/2019 11/10/2020 11/10/2020 11/10/2020 Group Analyte Unit RUSL IUSL Chemical Ammonia mg/kg 723 560 98.5 6.43 49.0 13.5 91.8 8.90 39.4 4.15 3.66 3.48 401 761 277 1100 1600 113 70.8 54.7 79.9 532 476 282 180 Chemical Nitrate as N mg/kg 0.33 0.24 0.2 < 0.2 < 0.20 2.7 1 < 0.24 0.38 2.1 0.95 < 0.20 1.2 4.2 2.1 1.8 3.7 < 0.20 0.56 0.45 0.34 0.41 < 0.2 3.7 1.1 < 0.6 Chemical Fluoride mg/kg 1.35 J 2.26 J 1.45 J < 1.21 2.09 8.73 15.5 3.78 10.3 0.908 J 0.814 J < 1.22 3.51 59.7 3.98 28.5 15.7 6.63 4.01 8.50 4.93 2.17 J 13.2 4.73 4.45 Metals Aluminum mg/kg 10400 10300 8230 502 3510 682 NA NA NA 459 340 401 3600 NA NA NA NA 11000 NA NA NA NA 31200 NA NA NA Metals Antimony mg/kg < 5.29 < 4.93 <3 0.511 J < 2.42 0.447 J NA NA NA 0.482 J 0.512 J < 2.53 < 3.75 NA NA NA NA < 11.7 NA NA NA NA <6 NA NA NA Metals Arsenic mg/kg < 7.94 < 7.39 2.14 J < 3.61 < 3.63 < 3.69 NA NA NA < 3.46 < 3.35 < 3.8 < 5.63 NA NA NA NA 4.21 J NA NA NA NA 6.38 J NA NA NA Metals Barium mg/kg 126 118 131 5.16 15.9 5.1 NA NA NA 4.92 4.61 4.9 50.2 NA NA NA NA 140 NA NA NA NA 250 NA NA NA Metals Beryllium mg/kg 0.718 J 1.13 J 1.02 < 0.601 0.258 J < 0.614 NA NA NA < 0.577 < 0.558 < 0.634 0.361 J NA NA NA NA 1.14 J NA NA NA NA 2.39 NA NA NA Metals Cadmium mg/kg < 1.32 < 1.23 < 0.751 < 0.601 0.14 J < 0.614 NA NA NA < 0.577 < 0.558 < 0.634 < 0.939 NA NA NA NA < 2.92 NA NA NA NA < 1.5 NA NA NA Metals Calcium mg/kg 1110 1020 620 142 452 117 NA NA NA 48.5 32.9 21.7 J 375 NA NA NA NA 3550 NA NA NA NA 484 NA NA NA Metals Chromium mg/kg 9.99 8.34 18.4 1.24 6.91 1.77 NA NA NA 1.02 J 0.576 J 0.606 J 5.32 NA NA NA NA 13.6 NA NA NA NA 40 NA NA NA Metals Cobalt mg/kg 4.34 2.97 11.6 0.269 J 1.52 < 0.614 NA NA NA 0.175 J 0.326 J < 0.634 3.92 NA NA NA NA 6.31 NA NA NA NA 18.9 NA NA NA Metals Copper mg/kg 7.14 5.39 8.83 0.386 J 2.75 1 J NA NA NA < 2.31 < 2.23 < 2.53 5.33 NA NA NA NA 19.5 NA NA NA NA 29.8 NA NA NA Metals Iron mg/kg 7610 4320 15000 581 4630 1070 NA NA NA 257 217 217 3770 NA NA NA NA 10200 NA NA NA NA 25900 NA NA NA Metals Lead mg/kg 24 28 13.9 0.865 J 3.74 1.26 J NA NA NA 0.439 J 0.42 J 0.476 J 8.3 NA NA NA NA 25.5 NA NA NA NA 25 NA NA NA Metals Magnesium mg/kg 481 279 1240 91.5 194 22.3 J NA NA NA 35.7 14.4 J 15 J 238 NA NA NA NA 751 NA NA NA NA 3320 NA NA NA Metals Manganese mg/kg 230 150 332 15.6 54.8 3.72 NA NA NA 18 11.9 12.3 123 NA NA NA NA 246 NA NA NA NA 345 NA NA NA Metals Mercury ug/kg 62.3 56.8 15.7 J < 12.7 5.46 J < 14.9 NA NA NA < 14.2 < 13.3 < 13.1 34.6 NA NA NA NA 121 NA NA NA NA 75.8 NA NA NA Metals Nickel mg/kg 4.13 3.51 7.33 0.341 J 2.21 0.568 J NA NA NA 0.773 0.442 J 0.492 J 8.68 NA NA NA NA 15.5 NA NA NA NA 18.7 NA NA NA Metals Potassium mg/kg 300 263 538 84.4 200 139 NA NA NA 87.4 95.4 90.7 205 NA NA NA NA 664 NA NA NA NA 1890 NA NA NA Metals Selenium mg/kg 2.38 J < 7.39 < 4.51 < 3.61 < 3.63 < 3.69 NA NA NA < 3.46 < 3.35 < 3.8 < 5.63 NA NA NA NA < 17.5 NA NA NA NA 1.51 J NA NA NA Metals Silver mg/kg < 1.32 < 1.23 < 0.751 < 0.601 < 0.606 < 0.614 NA NA NA < 0.577 < 0.558 < 0.634 < 0.939 NA NA NA NA < 2.92 NA NA NA NA < 1.5 NA NA NA Metals Sodium mg/kg 34.8 J 42 J 32.5 J 18.8 J 41.4 12.9 J NA NA NA 14.1 J 17.1 J 13.5 J 19.9 J NA NA NA NA 109 J NA NA NA NA 119 NA NA NA Metals Thallium mg/kg < 5.29 < 4.93 < 30 < 2.4 < 2.42 < 2.46 NA NA NA < 2.31 < 2.23 < 2.53 < 3.75 NA NA NA NA < 11.7 NA NA NA NA < 60 NA NA NA Metals Vanadium mg/kg 25.9 21.6 36.5 1.74 10.5 2.81 NA NA NA 1.18 1.43 1.6 13.3 NA NA NA NA 41 NA NA NA NA 100 NA NA NA Metals Zinc mg/kg 38.2 23 33.8 5.64 50.8 6.09 NA NA NA 2.42 1.24 J 1 J 32.4 NA NA NA NA 63.8 NA NA NA NA 73.1 NA NA NA Radiological Technetium-99 pCi/g 19 89400 0 ## 0 ## 0 ## 0.0243 # 5.62 # 4.94 # 0.614 # 3.71 2.62 7.50 # 0 ## 0 ## 6.28 # 0.208 # 0 ## NA 1.12 0 ## 0.638 # 0.208 # 0.700 # 0.265 # 4.12 # 1.17 0.225 # 0.0586 # Radiological Uranium-233/234 pCi/g 13 3310 1.14 0.925 1.67 1.42 2.58 14.9 67.2 6.03 63.7 0.658 1.07 0.219 32.5 19.1 2.05 NA 27.0 62.5 1.72 1.43 1.49 2.13 1.86 13.2 1.56 1.75 Radiological Uranium-235/236 pCi/g 8 39 0.00159 # 0.0647 # 0.156 # 0.0250 # 0.181 0.678 3.31 0.480 3.18 0.0235 # 0.104 # 0.0173 # 2.30 1.02 0.0675 # NA 1.22 3.12 0.0212 # 0.145 0.0841 # 0.0940 # 0.104 # 0.393 0.0344 # 0 ## Radiological Uranium-238 pCi/g 14 179 0.742 1.17 1.33 0.389 2.05 2.77 12.1 1.99 11.8 0.302 0.354 0.298 8.18 5.15 1.51 NA 6.42 14.9 1.67 1.89 1.40 1.50 1.96 3.79 1.07 0.970 Radiological Uranium-234 ug/kg < 25.7 < 25.6 < 15.4 < 12.1 < 12.4 < 12.0 NA NA NA < 11.0 < 11.8 < 12.0 4.27 J NA NA NA NA 12.7 J NA NA NA NA < 30.8 NA NA NA Radiological Uranium-235 ug/kg 11.5 J 16 J 13.8 J 5.32 J 51.2 114 NA NA NA 6.57 J 2.9 J 5 J 451 NA NA NA NA 1310 NA NA NA NA 27.8 J NA NA NA Radiological Uranium-238 ug/kg 1320 1700 1360 260 5790 3310 NA NA NA 401 140 265 16200 NA NA NA NA 49700 NA NA NA NA 2840 NA NA NA Radiological Total Uranium Isotopes ug/kg 1330 1720 1370 265 5840 3420 NA NA NA 408 143 270 16700 NA NA NA NA 51000 NA NA NA NA 2870 NA NA NA SVOCs 1,1'-Biphenyl ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 2,4,5-Trichlorophenol ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 2,4,6-Trichlorophenol ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 2,4-Dichlorophenol ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 2,4-Dimethylphenol ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 2,4-Dinitrophenol ug/kg < 320 < 330 < 320 < 310 < 330 < 320 NA NA NA < 330 < 320 < 320 < 330 NA NA NA NA < 320 NA NA NA NA < 330 NA NA NA SVOCs 2,4-Dinitrotoluene ug/kg < 130 < 130 < 130 < 120 < 130 < 130 NA NA NA < 130 < 130 < 130 < 130 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA SVOCs 2,6-Dinitrotoluene ug/kg < 130 < 130 < 130 < 120 < 130 < 130 NA NA NA < 130 < 130 < 130 < 130 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA SVOCs 2-Chloronaphthalene ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 2-Chlorophenol ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 2-Methylnaphthalene ug/kg < 13 < 13 < 13 < 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs 2-Methylphenol ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 2-Nitroaniline ug/kg < 130 < 130 < 130 < 120 < 130 < 130 NA NA NA < 130 < 130 < 130 < 130 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA SVOCs 2-Nitrophenol ug/kg < 130 < 130 < 130 < 120 < 130 < 130 NA NA NA < 130 < 130 < 130 < 130 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA SVOCs 3,3'-Dichlorobenzidine ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 3-Nitroaniline ug/kg < 130 < 130 < 130 < 120 < 130 < 130 NA NA NA < 130 < 130 < 130 < 130 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA SVOCs 4,6-Dinitro-2-methylphenol ug/kg < 320 < 330 < 320 < 310 < 330 < 320 NA NA NA < 330 < 320 < 320 < 330 NA NA NA NA < 320 NA NA NA NA < 330 NA NA NA SVOCs 4-Bromophenyl phenyl ether ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 4-Chloro-3-methylphenol ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 4-Chloroaniline ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 4-Chlorophenyl phenyl ether ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs 4-Methylphenol ug/kg < 130 < 130 < 130 < 120 < 130 < 130 NA NA NA < 130 < 130 < 130 < 130 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA SVOCs 4-Nitroaniline ug/kg < 130 < 130 < 130 < 120 < 130 < 130 NA NA NA < 130 < 130 < 130 < 130 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA SVOCs 4-Nitrophenol ug/kg < 320 < 330 < 320 < 310 < 330 < 320 NA NA NA < 330 < 320 < 320 < 330 NA NA NA NA < 320 NA NA NA NA < 330 NA NA NA SVOCs Acenaphthene ug/kg < 13 < 13 < 13 < 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Acenaphthylene ug/kg < 13 < 13 < 13 < 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Acetophenone ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Anthracene ug/kg < 13 < 13 14 < 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Atrazine ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Benz(a)anthracene ug/kg < 13 < 13 170 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Benzaldehyde ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Benzo(a)pyrene ug/kg < 13 < 13 290 20 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Benzo(b)fluoranthene ug/kg < 13 < 13 630 37 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Benzo(g,h,i)perylene ug/kg < 13 < 13 190 18 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Benzo(k)fluoranthene ug/kg < 13 < 13 200 16 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA Page 1 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-11 SED-12 SED-13 SED-14 SED-15 SED-16 SED-16 SED-16 SED-16 SED-17 SED-17 SED-18 SED-19 SED-19 SED-19 SED-19 SED-19 SED-20 SED-20 SED-20 SED-20 SED-20 SED-21 SED-21 SED-21 SED-21 Depth 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 18 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in Type N N N N N N N N N N FD N N N N FD N N N N N N N N N N Date 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/16/2019 7/17/2019 11/18/2020 11/18/2020 11/18/2020 7/18/2019 7/18/2019 7/16/2019 7/17/2019 12/2/2020 12/2/2020 12/2/2020 12/2/2020 7/16/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 7/15/2019 11/10/2020 11/10/2020 11/10/2020 Group Analyte Unit RUSL IUSL SVOCs Bis(2-chloroethoxy)methane ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Bis(2-chloroethyl)ether ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Bis(2-chloroisopropyl)ether ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Bis(2-ethylhexyl)phthalate ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Butyl benzyl phthalate ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Caprolactam ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Carbazole ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Chrysene ug/kg < 13 < 13 310 21 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Dibenz(a,h)anthracene ug/kg < 13 < 13 < 13 < 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Dibenzofuran ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Diethyl phthalate ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Dimethyl phthalate ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Di-n-butyl phthalate ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Di-n-octyl phthalate ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Fluoranthene ug/kg < 13 < 13 570 36 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Fluorene ug/kg < 13 < 13 < 13 < 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Hexachlorobenzene ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Hexachlorobutadiene ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Hexachlorocyclopentadiene ug/kg < 320 < 330 < 320 < 310 < 330 < 320 NA NA NA < 330 < 320 < 320 < 330 NA NA NA NA < 320 NA NA NA NA < 330 NA NA NA SVOCs Hexachloroethane ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Indeno(1,2,3-cd)pyrene ug/kg < 13 < 13 170 15 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Isophorone ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Naphthalene ug/kg < 13 < 13 < 13 < 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Nitrobenzene ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs N-Nitrosodi-n-propylamine ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs N-Nitrosodiphenylamine ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Pentachlorophenol ug/kg < 320 < 330 < 320 < 310 < 330 < 320 NA NA NA < 330 < 320 < 320 < 330 NA NA NA NA < 320 NA NA NA NA < 330 NA NA NA SVOCs Phenanthrene ug/kg < 13 < 13 130 < 13 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA SVOCs Phenol ug/kg < 66 < 67 < 64 < 64 < 67 < 65 NA NA NA < 67 < 64 < 66 < 67 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA SVOCs Pyrene ug/kg < 13 < 13 450 28 < 13 < 13 NA NA NA < 13 < 13 < 13 < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA VOCs (1-Methylethyl)-Benzene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,1,1-Trichloroethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,1,2,2-Tetrachloroethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,1,2-Trichloroethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,1-Dichloroethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,1-Dichloroethene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 < 5.3 < 4.9 <5 < 4.8 < 4.8 < 4.5 < 5.2 < 74 < 26 < 24 < 60 < 6.5 < 8.2 <7 < 6.4 < 7.4 < 6.2 < 54 < 8.9 < 15 VOCs 1,2,4-Trichlorobenzene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,2-Dibromo-3-chloropropane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,2-Dibromoethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,2-Dichlorobenzene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,2-Dichloroethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 < 5.3 < 4.9 <5 < 4.8 < 4.8 < 4.5 < 5.2 < 74 < 26 < 24 < 60 < 6.5 < 8.2 <7 < 6.4 < 7.4 < 6.2 < 54 < 8.9 < 15 VOCs 1,2-Dichloropropane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,3-Dichlorobenzene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 1,4-Dichlorobenzene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs 2-Butanone ug/kg < 25 180 < 24 < 17 < 15 < 16 NA NA NA < 19 < 19 < 18 45 NA NA NA NA 45 NA NA NA NA < 25 NA NA NA VOCs 2-Hexanone ug/kg < 13 < 11 < 12 < 8.7 < 7.6 < 8.2 NA NA NA < 9.6 < 9.5 < 8.9 < 10 NA NA NA NA < 13 NA NA NA NA < 12 NA NA NA VOCs 4-Methyl-2-pentanone ug/kg < 13 < 11 < 12 < 8.7 < 7.6 < 8.2 NA NA NA < 9.6 < 9.5 < 8.9 < 10 NA NA NA NA < 13 NA NA NA NA < 12 NA NA NA VOCs Acetone ug/kg 32 110 30 28 < 15 < 16 NA NA NA < 19 < 19 < 18 48 NA NA NA NA 110 NA NA NA NA 67 NA NA NA VOCs Benzene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Bromodichloromethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Bromoform ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Bromomethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Carbon disulfide ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Carbon tetrachloride ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Chlorobenzene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Chloroethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Chloroform ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Chloromethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs cis-1,2-Dichloroethene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 < 5.3 < 4.9 <5 < 4.8 < 4.8 < 4.5 < 5.2 < 74 < 26 < 24 < 60 < 6.5 < 8.2 <7 < 6.4 < 7.4 < 6.2 < 54 < 8.9 < 15 VOCs cis-1,3-Dichloropropene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Cyclohexane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Dibromochloromethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Dichlorodifluoromethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Ethylbenzene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA Page 2 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-11 SED-12 SED-13 SED-14 SED-15 SED-16 SED-16 SED-16 SED-16 SED-17 SED-17 SED-18 SED-19 SED-19 SED-19 SED-19 SED-19 SED-20 SED-20 SED-20 SED-20 SED-20 SED-21 SED-21 SED-21 SED-21 Depth 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 18 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in Type N N N N N N N N N N FD N N N N FD N N N N N N N N N N Date 7/17/2019 7/17/2019 7/17/2019 7/17/2019 7/16/2019 7/17/2019 11/18/2020 11/18/2020 11/18/2020 7/18/2019 7/18/2019 7/16/2019 7/17/2019 12/2/2020 12/2/2020 12/2/2020 12/2/2020 7/16/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 7/15/2019 11/10/2020 11/10/2020 11/10/2020 Group Analyte Unit RUSL IUSL VOCs Methyl acetate ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Methyl tert-butyl ether ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Methylcyclohexane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Methylene chloride ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Styrene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Tetrachloroethene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 < 5.3 < 4.9 <5 5.5 < 4.8 < 4.5 < 5.2 < 74 < 26 < 24 < 60 < 6.5 < 8.2 <7 < 6.4 < 7.4 < 6.2 < 54 < 8.9 < 15 VOCs Toluene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs trans-1,2-Dichloroethene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 < 5.3 < 4.9 <5 < 4.8 < 4.8 < 4.5 < 5.2 < 74 < 26 < 24 < 60 < 6.5 < 8.2 <7 < 6.4 < 7.4 < 6.2 < 54 < 8.9 < 15 VOCs trans-1,3-Dichloropropene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Trichloroethene ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 < 5.3 < 4.9 <5 < 4.8 < 4.8 < 4.5 < 5.2 < 74 < 26 < 24 < 60 < 6.5 < 8.2 <7 < 6.4 < 7.4 < 6.2 < 54 < 8.9 < 15 VOCs Trichlorofluoromethane ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 NA NA NA < 4.8 < 4.8 < 4.5 < 5.2 NA NA NA NA < 6.5 NA NA NA NA < 6.2 NA NA NA VOCs Vinyl chloride ug/kg < 6.3 < 5.6 < 6.1 < 4.4 < 3.8 < 4.1 < 5.3 < 4.9 <5 < 4.8 < 4.8 < 4.5 < 5.2 < 74 < 26 < 24 < 60 < 6.5 < 8.2 <7 < 6.4 < 7.4 < 6.2 < 54 < 8.9 < 15 VOCs Xylenes, Total ug/kg < 13 < 11 < 12 < 8.7 < 7.6 < 8.2 NA NA NA < 9.6 < 9.5 < 8.9 < 10 NA NA NA NA < 13 NA NA NA NA < 12 NA NA NA Page 3 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-21 SED-22 SED-22 SED-22 SED-22 SED-22 SED-23 SED-23 SED-23 SED-23 SED-23 SED-24 SED-24 SED-24 SED-24 SED-25* SED-26* SED-27** SED-28** SED-29 SED-29 SED-29 SED-30 SED-30 SED-31 SED-31 Depth 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 16 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N N N N N N N N N N N N N N N N N Date 11/10/2020 7/15/2019 11/9/2020 11/9/2020 11/9/2020 11/9/2020 7/16/2019 11/16/2020 11/16/2020 11/16/2020 11/16/2020 7/16/2019 11/16/2020 11/16/2020 11/16/2020 7/18/2019 7/18/2019 7/18/2019 7/18/2019 11/20/2019 11/20/2019 11/20/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 Group Analyte Unit RUSL IUSL Chemical Ammonia mg/kg 474 978 531 137 75.9 386 214 680 200 291 288 70.5 1080 322 1170 2270 167 395 1560 455 230 287 394 392 286 118 Chemical Nitrate as N mg/kg 1.1 < 0.2 0.6 < 0.28 < 0.27 < 0.48 < 0.20 1.6 < 0.26 < 0.26 < 0.42 0.20 4.8 < 0.36 6.3 0.27 1.4 0.30 < 0.20 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 Chemical Fluoride mg/kg 8.86 4.64 9.90 1.79 3.02 6.95 38.1 89.6 41.6 48.5 55.3 49.2 152 62.7 135 53.3 4.61 171 39.3 1.14 J 2.61 2.56 2.26 3.43 3.13 3.07 Metals Aluminum mg/kg NA 25800 NA NA NA NA 19800 NA NA NA NA 10500 NA NA NA 6570 5540 1860 5790 25900 17000 19800 24000 21700 20400 15500 Metals Antimony mg/kg NA < 6.26 NA NA NA NA < 2.87 NA NA NA NA < 2.94 NA NA NA 5.01 J 1.22 J 4.79 J 6.81 J < 4.85 < 2.97 < 3.53 < 4.08 < 4.41 < 28.4 < 25.6 Metals Arsenic mg/kg NA 4.62 J NA NA NA NA 3.36 J NA NA NA NA < 4.4 NA NA NA < 26.7 0.795 J < 15.4 < 19.7 4.24 J 2.45 J 2.31 J 3.6 J 2.49 J 4.51 2.85 J Metals Barium mg/kg NA 209 NA NA NA NA 127 NA NA NA NA 76.8 NA NA NA 103 56 723 1220 207 147 157 174 140 213 239 Metals Beryllium mg/kg NA 2.02 NA NA NA NA 2.09 NA NA NA NA 0.896 NA NA NA < 4.44 0.253 J < 2.57 < 3.28 1.83 2.13 1.86 1.99 2.32 1.69 1.67 Metals Cadmium mg/kg NA 0.374 J NA NA NA NA 0.209 J NA NA NA NA < 0.734 NA NA NA 2 J 0.61 J < 2.57 < 3.28 < 1.21 < 0.743 < 0.884 < 1.02 < 1.1 < 0.709 < 0.641 Metals Calcium mg/kg NA 872 NA NA NA NA 770 NA NA NA NA 606 NA NA NA 10500 3950 253000 284000 809 272 441 424 448 796 679 Metals Chromium mg/kg NA 35.1 NA NA NA NA 29.3 NA NA NA NA 15.2 NA NA NA 35.7 49.6 78.9 75.3 33.8 25.3 28.3 32.3 28.3 26.4 22.8 Metals Cobalt mg/kg NA 16.6 NA NA NA NA 11.8 NA NA NA NA 5 NA NA NA 8.69 2.95 2 J 2.91 J 8.36 3.7 5.92 8.26 4.64 14.3 16.4 Metals Copper mg/kg NA 33.1 NA NA NA NA 18.5 NA NA NA NA 7.79 NA NA NA 418 116 20.9 36.4 27.9 13.1 17.6 24.1 17 20.5 17.3 Metals Iron mg/kg NA 32500 NA NA NA NA 29500 NA NA NA NA 10100 NA NA NA 12300 2840 4310 29100 17600 9170 12400 15100 10000 28600 30000 Metals Lead mg/kg NA 37.4 NA NA NA NA 14.4 NA NA NA NA 8.69 NA NA NA 45.9 29.3 18.5 91.7 28.2 11.3 15.2 41.8 13.4 22.9 14.1 Metals Magnesium mg/kg NA 2180 NA NA NA NA 2980 NA NA NA NA 1220 NA NA NA 1180 679 17200 16500 2800 971 2180 3240 1400 3080 3110 Metals Manganese mg/kg NA 389 NA NA NA NA 268 NA NA NA NA 123 NA NA NA 97.2 23 102 149 223 66.2 128 207 122 788 1090 Metals Mercury ug/kg NA 113 NA NA NA NA 40.3 NA NA NA NA 25.8 NA NA NA 407 576 287 526 NA NA NA NA NA NA NA Metals Nickel mg/kg NA 43.3 NA NA NA NA 11.5 NA NA NA NA 5.45 NA NA NA 86.7 75.1 255 143 15.2 8.4 10.8 13.4 9.48 12.2 10.7 Metals Potassium mg/kg NA 1410 NA NA NA NA 2010 NA NA NA NA 846 NA NA NA 798 170 308 3650 1400 297 1060 1580 509 1760 1610 Metals Selenium mg/kg NA 3.29 J NA NA NA NA < 4.31 NA NA NA NA 0.885 J NA NA NA 4.72 J 0.72 J 2.58 J 3.69 J < 7.27 < 4.46 < 5.3 < 6.12 < 6.61 < 4.26 < 3.84 Metals Silver mg/kg NA < 1.56 NA NA NA NA < 0.718 NA NA NA NA < 0.734 NA NA NA 323 544 10.5 27.6 < 12.1 < 7.43 < 8.84 < 10.2 < 11 < 7.09 < 6.41 Metals Sodium mg/kg NA 69.7 J NA NA NA NA 130 NA NA NA NA 94.7 NA NA NA 919 90.4 6330 7260 125 77.7 97.1 95.9 110 52.7 52.6 Metals Thallium mg/kg NA < 62.6 NA NA NA NA < 28.7 NA NA NA NA < 29.4 NA NA NA < 17.8 < 2.6 < 10.3 < 13.1 < 48.5 < 29.7 < 35.3 < 40.8 < 44.1 < 28.4 < 25.6 Metals Vanadium mg/kg NA 73.7 NA NA NA NA 70.5 NA NA NA NA 33.5 NA NA NA 22.2 7.25 5.71 5.67 85.6 40.3 58.6 71.9 51.2 73.4 61.9 Metals Zinc mg/kg NA 138 NA NA NA NA 46 NA NA NA NA 22.8 NA NA NA 9070 229 523 403 69.1 29.8 43.5 68.8 31.5 56.2 45.9 Radiological Technetium-99 pCi/g 19 89400 0.528 # 0 ## 0.304 # 0 ## 0 ## 0.0333 # 50.8 144 1.40 0.785 30.6 35.8 118 33.3 158 8.55 # 1.68 # 0 ## 5.75 # 0 ## 0 ## 0 ## 2.43 # 0 ## 0.959 # 0 ## Radiological Uranium-233/234 pCi/g 13 3310 2.19 117 6.21 1.09 1.81 1.97 1.35 1.36 1.06 1.11 1.19 1.14 3.12 1.57 2.63 907 222 225 254 6.23 1.23 1.81 5.71 1.41 2.81 2.96 Radiological Uranium-235/236 pCi/g 8 39 0.131 # 4.98 0.257 0.0350 # 0.225 # 0.192 # 0.00261 # 0.0994 # 0.0187 # 0.0379 # 0.0658 # 0.0608 # 0.160 # 0.217 0.153 # 41.1 11.0 11.9 12.4 0.313 0.175 0.208 0.191 0.0337 # 0.0669 # 0.110 # Radiological Uranium-238 pCi/g 14 179 1.51 28.0 2.24 0.838 1.08 0.971 1.69 1.36 1.19 0.736 1.29 0.944 2.13 1.47 1.67 149 46.9 37.4 44.6 2.51 1.16 1.55 2.51 1.28 1.75 1.69 Radiological Uranium-234 ug/kg NA 22 J NA NA NA NA < 14.4 NA NA NA NA < 15.9 NA NA NA 225 129 38.9 J 57.2 J < 24.3 < 15.1 < 18.4 < 20.4 < 21.1 < 14.5 < 12.4 Radiological Uranium-235 ug/kg NA 2230 NA NA NA NA 18.3 J NA NA NA NA 15.9 J NA NA NA 27100 14200 3970 6770 86.4 17.6 J 21.4 J 85.9 21 J 45.6 18.1 Radiological Uranium-238 ug/kg NA 80700 NA NA NA NA 2250 NA NA NA NA 1680 NA NA NA 646000 487000 90900 161000 6030 2490 2490 5410 2690 3400 2220 Radiological Total Uranium Isotopes ug/kg NA 83000 NA NA NA NA 2270 NA NA NA NA 1700 NA NA NA 673000 501000 94900 168000 6120 2510 2510 5500 2710 3450 2240 SVOCs 1,1'-Biphenyl ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 2,4,5-Trichlorophenol ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 2,4,6-Trichlorophenol ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 2,4-Dichlorophenol ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 2,4-Dimethylphenol ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 2,4-Dinitrophenol ug/kg NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA NA < 320 < 1600 < 320 < 320 < 1600 NA < 320 < 1600 < 1600 < 320 < 310 SVOCs 2,4-Dinitrotoluene ug/kg NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA NA < 120 < 630 < 130 < 130 < 640 NA < 130 < 620 < 620 < 130 < 120 SVOCs 2,6-Dinitrotoluene ug/kg NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA NA < 120 < 630 < 130 < 130 < 640 NA < 130 < 620 < 620 < 130 < 120 SVOCs 2-Chloronaphthalene ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 2-Chlorophenol ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 2-Methylnaphthalene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 < 13 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs 2-Methylphenol ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 2-Nitroaniline ug/kg NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA NA < 120 < 630 < 130 < 130 < 640 NA < 130 < 620 < 620 < 130 < 120 SVOCs 2-Nitrophenol ug/kg NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA NA < 120 < 630 < 130 < 130 < 640 NA < 130 < 620 < 620 < 130 < 120 SVOCs 3,3'-Dichlorobenzidine ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 3-Nitroaniline ug/kg NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA NA < 120 < 630 < 130 < 130 < 640 NA < 130 < 620 < 620 < 130 < 120 SVOCs 4,6-Dinitro-2-methylphenol ug/kg NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA NA < 320 < 1600 < 320 < 320 < 1600 NA < 320 < 1600 < 1600 < 320 < 310 SVOCs 4-Bromophenyl phenyl ether ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 4-Chloro-3-methylphenol ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 4-Chloroaniline ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 4-Chlorophenyl phenyl ether ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs 4-Methylphenol ug/kg NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA NA < 120 < 630 < 130 < 130 < 640 NA < 130 < 620 < 620 < 130 < 120 SVOCs 4-Nitroaniline ug/kg NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA NA < 120 < 630 < 130 < 130 < 640 NA < 130 < 620 < 620 < 130 < 120 SVOCs 4-Nitrophenol ug/kg NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA NA < 320 < 1600 < 320 < 320 < 1600 NA < 320 < 1600 < 1600 < 320 < 310 SVOCs Acenaphthene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 < 13 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Acenaphthylene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 < 13 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Acetophenone ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Anthracene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 110 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Atrazine ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Benz(a)anthracene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 3400 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Benzaldehyde ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Benzo(a)pyrene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 79 < 13 3000 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Benzo(b)fluoranthene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 150 < 13 4600 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Benzo(g,h,i)perylene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 1800 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Benzo(k)fluoranthene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 1900 < 65 NA < 13 < 63 < 64 < 13 < 13 Page 4 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-21 SED-22 SED-22 SED-22 SED-22 SED-22 SED-23 SED-23 SED-23 SED-23 SED-23 SED-24 SED-24 SED-24 SED-24 SED-25* SED-26* SED-27** SED-28** SED-29 SED-29 SED-29 SED-30 SED-30 SED-31 SED-31 Depth 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 16 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N N N N N N N N N N N N N N N N N Date 11/10/2020 7/15/2019 11/9/2020 11/9/2020 11/9/2020 11/9/2020 7/16/2019 11/16/2020 11/16/2020 11/16/2020 11/16/2020 7/16/2019 11/16/2020 11/16/2020 11/16/2020 7/18/2019 7/18/2019 7/18/2019 7/18/2019 11/20/2019 11/20/2019 11/20/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 Group Analyte Unit RUSL IUSL SVOCs Bis(2-chloroethoxy)methane ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Bis(2-chloroethyl)ether ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Bis(2-chloroisopropyl)ether ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Bis(2-ethylhexyl)phthalate ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 91 270 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Butyl benzyl phthalate ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Caprolactam ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Carbazole ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Chrysene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 3200 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Dibenz(a,h)anthracene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 < 13 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Dibenzofuran ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Diethyl phthalate ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Dimethyl phthalate ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Di-n-butyl phthalate ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Di-n-octyl phthalate ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Fluoranthene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 81 < 13 7100 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Fluorene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 < 13 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Hexachlorobenzene ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Hexachlorobutadiene ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Hexachlorocyclopentadiene ug/kg NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA NA < 320 < 1600 < 320 < 320 < 1600 NA < 320 < 1600 < 1600 < 320 < 310 SVOCs Hexachloroethane ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Indeno(1,2,3-cd)pyrene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 1600 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Isophorone ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Naphthalene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 < 13 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Nitrobenzene ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs N-Nitrosodi-n-propylamine ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs N-Nitrosodiphenylamine ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Pentachlorophenol ug/kg NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA NA < 320 < 1600 < 320 < 320 < 1600 NA < 320 < 1600 < 1600 < 320 < 310 SVOCs Phenanthrene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 < 64 < 13 440 < 65 NA < 13 < 63 < 64 < 13 < 13 SVOCs Phenol ug/kg NA < 66 NA NA NA NA < 65 NA NA NA NA < 64 NA NA NA < 64 < 320 < 64 < 65 < 330 NA < 65 < 320 < 320 < 66 < 63 SVOCs Pyrene ug/kg NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA < 13 82 < 13 5600 < 65 NA < 13 < 63 < 64 < 13 < 13 VOCs (1-Methylethyl)-Benzene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,1,1-Trichloroethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,1,2,2-Tetrachloroethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,1,2-Trichloroethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,1-Dichloroethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,1-Dichloroethene ug/kg < 19 < 6.1 < 34 < 5.6 <7 < 15 < 7.1 < 25 < 5.3 < 5.2 < 9.9 < 4.2 < 58 < 9.9 < 6.5 NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,2,4-Trichlorobenzene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,2-Dibromo-3-chloropropane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,2-Dibromoethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,2-Dichlorobenzene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,2-Dichloroethane ug/kg < 19 < 6.1 < 34 < 5.6 <7 < 15 < 7.1 < 25 < 5.3 < 5.2 < 9.9 < 4.2 < 58 < 9.9 < 6.5 NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,2-Dichloropropane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,3-Dichlorobenzene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 1,4-Dichlorobenzene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs 2-Butanone ug/kg NA 32 NA NA NA NA < 28 NA NA NA NA < 17 NA NA NA NA NA NA NA < 21 < 24 < 18 26 25 < 16 < 17 VOCs 2-Hexanone ug/kg NA < 12 NA NA NA NA < 14 NA NA NA NA < 8.3 NA NA NA NA NA NA NA < 10 < 12 < 8.9 < 11 < 12 < 8.0 < 8.3 VOCs 4-Methyl-2-pentanone ug/kg NA < 12 NA NA NA NA < 14 NA NA NA NA < 8.3 NA NA NA NA NA NA NA < 10 < 12 < 8.9 < 11 < 12 < 8.0 < 8.3 VOCs Acetone ug/kg NA 88 NA NA NA NA 91 NA NA NA NA 25 NA NA NA NA NA NA NA 410 370 420 380 530 410 440 VOCs Benzene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Bromodichloromethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Bromoform ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Bromomethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Carbon disulfide ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Carbon tetrachloride ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Chlorobenzene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Chloroethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Chloroform ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Chloromethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs cis-1,2-Dichloroethene ug/kg < 19 < 6.1 < 34 < 5.6 <7 < 15 < 7.1 < 25 < 5.3 < 5.2 < 9.9 < 4.2 < 58 < 9.9 < 6.5 NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs cis-1,3-Dichloropropene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Cyclohexane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Dibromochloromethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Dichlorodifluoromethane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Ethylbenzene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 Page 5 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-21 SED-22 SED-22 SED-22 SED-22 SED-22 SED-23 SED-23 SED-23 SED-23 SED-23 SED-24 SED-24 SED-24 SED-24 SED-25* SED-26* SED-27** SED-28** SED-29 SED-29 SED-29 SED-30 SED-30 SED-31 SED-31 Depth 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 16 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N N N N N N N N N N N N N N N N N Date 11/10/2020 7/15/2019 11/9/2020 11/9/2020 11/9/2020 11/9/2020 7/16/2019 11/16/2020 11/16/2020 11/16/2020 11/16/2020 7/16/2019 11/16/2020 11/16/2020 11/16/2020 7/18/2019 7/18/2019 7/18/2019 7/18/2019 11/20/2019 11/20/2019 11/20/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 Group Analyte Unit RUSL IUSL VOCs Methyl acetate ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Methyl tert-butyl ether ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Methylcyclohexane ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Methylene chloride ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Styrene ug/kg NA < 6.1 NA NA NA NA < 7.1 NA NA NA NA < 4.2 NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Tetrachloroethene ug/kg < 19 < 6.1 < 34 < 5.6 <7 < 15 < 7.1 < 25 < 5.3 < 5.2 < 9.9 < 4.2 < 58 < 9.9 < 6.5 NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Toluene ug/kg NA < 6.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs trans-1,2-Dichloroethene ug/kg < 19 < 6.1 < 34 < 5.6 <7 < 15 < 7.1 < 25 < 5.3 < 5.2 < 9.9 < 4.2 < 58 < 9.9 < 6.5 NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs trans-1,3-Dichloropropene ug/kg NA < 6.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Trichloroethene ug/kg < 19 < 6.1 < 34 < 5.6 <7 < 15 < 7.1 < 25 < 5.3 < 5.2 < 9.9 < 4.2 < 58 < 9.9 < 6.5 NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Trichlorofluoromethane ug/kg NA < 6.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Vinyl chloride ug/kg < 19 < 6.1 < 34 < 5.6 <7 < 15 < 7.1 < 25 < 5.3 < 5.2 < 9.9 < 4.2 < 58 < 9.9 < 6.5 NA NA NA NA < 5.1 < 6.0 < 4.5 < 5.3 < 6.1 < 4.0 < 4.2 VOCs Xylenes, Total ug/kg NA < 12 NA NA NA NA < 14 NA NA NA NA < 8.3 NA NA NA NA NA NA NA < 10 < 12 < 8.9 < 11 < 12 < 8.0 < 8.3 Page 6 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-32 SED-32 SED-33 SED-33 SED-33 SED-34 SED-34 SED-35 SED-35 SED-36 SED-36 SED-37 SED-37 SED-37 SED-38 SED-38 SED-38 SED-38 SED-38 SED-38 SED-39 SED-39 SED-39 SED-39 SED-39 Depth 0 - 6 in 6 - 12 in 0 - 6 in 12 - 16 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in Type N N N N N N N N N N N N N FD N N N N FD N N N N N N Date 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/22/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 Group Analyte Unit RUSL IUSL Chemical Ammonia mg/kg 480 576 248 67.3 117 397 336 158 80.1 153 99.1 451 127 178 576 581 596 306 393 491 222 329 72.7 56.9 274 Chemical Nitrate as N mg/kg 1.1 < 0.50 < 0.50 NA < 0.50 0.62 < 0.50 < 0.50 < 0.50 < 0.50 0.55 < 0.50 < 0.50 < 0.50 0.66 0.95 < 0.57 < 0.33 < 0.37 < 0.68 < 0.5 < 0.36 0.44 < 0.3 < 0.35 Chemical Fluoride mg/kg 3.88 4.21 1.57 J 6.63 1.56 2.20 4.26 2.09 4.29 < 1.44 < 1.32 1.35 J 1.60 0.858 J 5.17 5.56 4.27 J 3.55 3.90 5.91 1.90 2.60 < 1.43 3.75 2.41 J Metals Aluminum mg/kg 15200 17600 23200 15500 18200 23600 24200 24800 22100 15300 16100 14800 18700 19000 23200 NA NA NA NA NA 30400 NA NA NA NA Metals Antimony mg/kg < 4.15 < 3.44 < 35.6 < 2.73 < 30.3 < 3.59 < 32.8 < 29.9 < 28 < 2.89 < 26.9 < 3.27 < 28.3 < 30 < 6.96 NA NA NA NA NA < 3.32 NA NA NA NA Metals Arsenic mg/kg 2.47 J 3.35 J 5.43 3.14 J 3.27 J 4.41 J 4.44 J 3.07 J 3.65 J 2.9 J 3.85 J 3.34 J 3.7 J 3.88 J 4.3 J NA NA NA NA NA 4.05 J NA NA NA NA Metals Barium mg/kg 168 203 167 135 163 174 170 203 178 106 123 122 134 142 206 NA NA NA NA NA 167 NA NA NA NA Metals Beryllium mg/kg 1.35 1.53 1.83 1.63 2.07 1.96 2.7 2.05 2.38 1.08 1.43 1.06 1.38 1.5 2.39 NA NA NA NA NA 3 NA NA NA NA Metals Cadmium mg/kg < 1.04 < 0.86 < 0.89 < 0.682 < 0.756 < 0.898 < 0.82 < 0.747 < 0.701 < 0.723 < 0.673 < 0.817 < 0.706 < 0.749 < 1.74 NA NA NA NA NA < 0.83 NA NA NA NA Metals Calcium mg/kg 1140 742 292 150 182 843 762 490 542 256 158 394 346 335 914 NA NA NA NA NA 297 NA NA NA NA Metals Chromium mg/kg 22.6 25.9 28.3 23.4 25.6 28.7 32.7 33.5 27.3 19.3 19.7 18.5 22.6 23 24.9 NA NA NA NA NA 35.4 NA NA NA NA Metals Cobalt mg/kg 9.95 10 11.4 6.84 13.8 15.9 17.5 17.4 19.1 9.08 11.7 6.86 8.53 8.88 14.3 NA NA NA NA NA 13 NA NA NA NA Metals Copper mg/kg 19.6 22.3 21.9 12.9 19.3 26.3 24.8 23.2 24.3 14.9 17.1 14.7 18.2 19.4 22.1 NA NA NA NA NA 24.6 NA NA NA NA Metals Iron mg/kg 18600 21300 29300 16700 29100 32800 32200 30300 35600 22000 30400 20500 25700 26800 18400 NA NA NA NA NA 19900 NA NA NA NA Metals Lead mg/kg 24.1 40 20.1 11.8 11.7 31.3 22.3 12.2 13.6 17.5 20.5 30.1 20.7 22 13.6 NA NA NA NA NA 21.1 NA NA NA NA Metals Magnesium mg/kg 2440 2570 3060 1370 3590 3110 4000 4450 4410 2320 2840 2010 2560 2640 2260 NA NA NA NA NA 3330 NA NA NA NA Metals Manganese mg/kg 410 323 295 176 281 906 1020 461 819 260 322 215 219 230 498 NA NA NA NA NA 210 NA NA NA NA Metals Mercury ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 56.8 J NA NA NA NA Metals Nickel mg/kg 11.2 13.9 12.9 7.21 12.1 13.2 14.2 14.7 13.7 8.87 9.48 8.54 10 10.2 13.9 NA NA NA NA NA 16.9 NA NA NA NA Metals Potassium mg/kg 1090 1090 1460 443 1700 1320 1290 2130 2050 1200 1400 1050 1130 1160 1210 NA NA NA NA NA 1400 NA NA NA NA Metals Selenium mg/kg 1.17 J 0.904 J < 5.34 < 4.09 < 4.54 1.05 J 1.23 J < 4.48 < 4.2 < 4.34 < 4.04 0.899 J < 4.24 < 4.5 < 10.4 NA NA NA NA NA < 4.98 NA NA NA NA Metals Silver mg/kg < 10.4 < 8.6 < 8.9 < 6.82 < 7.56 < 8.98 < 8.2 < 7.47 < 7.01 < 7.23 < 6.73 < 8.17 < 7.06 < 7.49 < 17.4 NA NA NA NA NA < 8.3 NA NA NA NA Metals Sodium mg/kg 68.2 89.1 85.7 48.8 59.7 64.9 62.5 59.2 58.9 50.9 57.9 47 51 60.2 83.1 J NA NA NA NA NA 59.9 NA NA NA NA Metals Thallium mg/kg < 41.5 < 34.4 < 35.6 < 27.3 < 30.3 < 35.9 < 32.8 < 29.9 < 28 < 28.9 < 26.9 < 32.7 < 28.3 < 30 < 69.6 NA NA NA NA NA < 33.2 NA NA NA NA Metals Vanadium mg/kg 53.5 64.3 81.1 56.4 74.4 86.1 89.1 74.1 82.1 50.3 60.2 48.5 67.2 67.9 54.3 NA NA NA NA NA 71.2 NA NA NA NA Metals Zinc mg/kg 62.4 60.7 56.8 27.6 52.6 56.5 60.9 53.1 51.3 39 40.7 37.2 41.1 42 54.5 NA NA NA NA NA 72.1 NA NA NA NA Radiological Technetium-99 pCi/g 19 89400 5.06 # 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 16.5 # 2.13 0.174 # 0.128 # 0.144 # 0.116 # 0 ## 0.626 # 0.536 # 0.281 # 0.732 # Radiological Uranium-233/234 pCi/g 13 3310 3.71 10.0 5.06 1.06 1.27 3.13 2.93 2.26 1.59 4.40 1.50 4.88 2.04 2.33 3.26 60.9 3.01 1.74 1.66 4.19 1.86 2.22 1.58 1.86 2.37 Radiological Uranium-235/236 pCi/g 8 39 0.0970 # 0.469 0.394 0.0461 # 0.0959 # 0.131 # 0.0487 # 0.179 0.0433 # 0.210 0.0881 0.254 0.149 0.0456 # 0.204 3.12 0.188 0.0835 # 0.0261 # 0.276 0.0122 # 0.0959 0.243 0.181 0.0929 # Radiological Uranium-238 pCi/g 14 179 2.00 3.28 2.52 1.09 1.56 1.81 1.73 1.59 1.66 2.38 1.05 1.78 1.62 1.38 1.68 17.0 1.71 1.60 1.25 2.52 1.70 1.81 1.63 1.96 1.85 Radiological Uranium-234 ug/kg < 19.9 < 18.4 < 16.5 < 14.1 < 14.7 < 17.6 < 16.3 < 14.0 < 13.2 < 14.2 < 13.5 < 15.9 < 14.5 < 15.0 < 34.6 NA NA NA NA NA < 15.9 NA NA NA NA Radiological Uranium-235 ug/kg 72.9 195 305 16.5 J 21.8 44.9 36.3 36.8 28.9 70.2 19.1 102 67.4 31.7 31.8 J NA NA NA NA NA 26.4 NA NA NA NA Radiological Uranium-238 ug/kg 4280 8370 14200 2230 2750 3650 3770 3920 3630 3970 1990 4850 3930 2910 3380 NA NA NA NA NA 3040 NA NA NA NA Radiological Total Uranium Isotopes ug/kg 4350 8570 14500 2250 2770 3690 3810 3960 3660 4040 2010 4950 4000 2940 3410 NA NA NA NA NA 3070 NA NA NA NA SVOCs 1,1'-Biphenyl ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 2,4,5-Trichlorophenol ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 2,4,6-Trichlorophenol ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 2,4-Dichlorophenol ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 2,4-Dimethylphenol ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 2,4-Dinitrophenol ug/kg < 1600 < 1600 < 320 NA < 320 < 1600 < 310 < 320 < 320 < 320 < 320 < 320 < 320 < 310 < 1600 NA NA NA NA NA < 330 NA NA NA NA SVOCs 2,4-Dinitrotoluene ug/kg < 640 < 620 < 130 NA < 130 < 630 < 120 < 130 < 130 < 120 < 130 < 130 < 130 < 120 < 640 NA NA NA NA NA < 130 NA NA NA NA SVOCs 2,6-Dinitrotoluene ug/kg < 640 < 620 < 130 NA < 130 < 630 < 120 < 130 < 130 < 120 < 130 < 130 < 130 < 120 < 640 NA NA NA NA NA < 130 NA NA NA NA SVOCs 2-Chloronaphthalene ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 2-Chlorophenol ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 2-Methylnaphthalene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs 2-Methylphenol ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 2-Nitroaniline ug/kg < 640 < 620 < 130 NA < 130 < 630 < 120 < 130 < 130 < 120 < 130 < 130 < 130 < 120 < 640 NA NA NA NA NA < 130 NA NA NA NA SVOCs 2-Nitrophenol ug/kg < 640 < 620 < 130 NA < 130 < 630 < 120 < 130 < 130 < 120 < 130 < 130 < 130 < 120 < 640 NA NA NA NA NA < 130 NA NA NA NA SVOCs 3,3'-Dichlorobenzidine ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 3-Nitroaniline ug/kg < 640 < 620 < 130 NA < 130 < 630 < 120 < 130 < 130 < 120 < 130 < 130 < 130 < 120 < 640 NA NA NA NA NA < 130 NA NA NA NA SVOCs 4,6-Dinitro-2-methylphenol ug/kg < 1600 < 1600 < 320 NA < 320 < 1600 < 310 < 320 < 320 < 320 < 320 < 320 < 320 < 310 < 1600 NA NA NA NA NA < 330 NA NA NA NA SVOCs 4-Bromophenyl phenyl ether ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 4-Chloro-3-methylphenol ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 4-Chloroaniline ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 4-Chlorophenyl phenyl ether ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs 4-Methylphenol ug/kg < 640 < 620 < 130 NA < 130 < 630 < 120 < 130 < 130 < 120 < 130 < 130 < 130 < 120 < 640 NA NA NA NA NA < 130 NA NA NA NA SVOCs 4-Nitroaniline ug/kg < 640 < 620 < 130 NA < 130 < 630 < 120 < 130 < 130 < 120 < 130 < 130 < 130 < 120 < 640 NA NA NA NA NA < 130 NA NA NA NA SVOCs 4-Nitrophenol ug/kg < 1600 < 1600 < 320 NA < 320 < 1600 < 310 < 320 < 320 < 320 < 320 < 320 < 320 < 310 < 1600 NA NA NA NA NA < 330 NA NA NA NA SVOCs Acenaphthene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Acenaphthylene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Acetophenone ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Anthracene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Atrazine ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Benz(a)anthracene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Benzaldehyde ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Benzo(a)pyrene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Benzo(b)fluoranthene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Benzo(g,h,i)perylene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Benzo(k)fluoranthene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA Page 7 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-32 SED-32 SED-33 SED-33 SED-33 SED-34 SED-34 SED-35 SED-35 SED-36 SED-36 SED-37 SED-37 SED-37 SED-38 SED-38 SED-38 SED-38 SED-38 SED-38 SED-39 SED-39 SED-39 SED-39 SED-39 Depth 0 - 6 in 6 - 12 in 0 - 6 in 12 - 16 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in Type N N N N N N N N N N N N N FD N N N N FD N N N N N N Date 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/22/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 Group Analyte Unit RUSL IUSL SVOCs Bis(2-chloroethoxy)methane ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Bis(2-chloroethyl)ether ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Bis(2-chloroisopropyl)ether ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Bis(2-ethylhexyl)phthalate ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Butyl benzyl phthalate ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Caprolactam ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Carbazole ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Chrysene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Dibenz(a,h)anthracene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Dibenzofuran ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Diethyl phthalate ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Dimethyl phthalate ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Di-n-butyl phthalate ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Di-n-octyl phthalate ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Fluoranthene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Fluorene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Hexachlorobenzene ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Hexachlorobutadiene ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Hexachlorocyclopentadiene ug/kg < 1600 < 1600 < 320 NA < 320 < 1600 < 310 < 320 < 320 < 320 < 320 < 320 < 320 < 310 < 1600 NA NA NA NA NA < 330 NA NA NA NA SVOCs Hexachloroethane ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Indeno(1,2,3-cd)pyrene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Isophorone ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Naphthalene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Nitrobenzene ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs N-Nitrosodi-n-propylamine ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs N-Nitrosodiphenylamine ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Pentachlorophenol ug/kg < 1600 < 1600 < 320 NA < 320 < 1600 < 310 < 320 < 320 < 320 < 320 < 320 < 320 < 310 < 1600 NA NA NA NA NA < 330 NA NA NA NA SVOCs Phenanthrene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA SVOCs Phenol ug/kg < 330 < 320 < 66 NA < 65 < 330 < 64 < 65 < 65 < 64 < 66 < 65 < 65 < 64 < 330 NA NA NA NA NA < 66 NA NA NA NA SVOCs Pyrene ug/kg < 65 < 63 < 13 NA < 13 < 65 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 65 NA NA NA NA NA < 13 NA NA NA NA VOCs (1-Methylethyl)-Benzene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,1,1-Trichloroethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,1,2,2-Tetrachloroethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,1,2-Trichloroethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,1-Dichloroethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,1-Dichloroethene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 < 18 < 41 < 8.6 < 9.8 < 22 < 4.9 < 8.7 < 7.1 < 6.2 < 10 VOCs 1,2,4-Trichlorobenzene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,2-Dibromo-3-chloropropane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,2-Dibromoethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,2-Dichlorobenzene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,2-Dichloroethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 < 18 < 41 < 8.6 < 9.8 < 22 < 4.9 < 8.7 < 7.1 < 6.2 < 10 VOCs 1,2-Dichloropropane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,3-Dichlorobenzene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 1,4-Dichlorobenzene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs 2-Butanone ug/kg 38 76 < 20 NA 45 28 28 < 18 < 17 < 18 < 20 < 20 < 18 < 18 < 24 NA NA NA NA NA < 19 NA NA NA NA VOCs 2-Hexanone ug/kg < 12 < 11 < 10 NA < 11 < 12 < 10 < 8.9 < 8.5 < 8.8 < 10 < 9.8 < 8.9 < 8.9 < 12 NA NA NA NA NA < 9.7 NA NA NA NA VOCs 4-Methyl-2-pentanone ug/kg < 12 < 11 < 10 NA < 11 < 12 < 10 < 8.9 < 8.5 < 8.8 < 10 < 9.8 < 8.9 < 8.9 < 12 NA NA NA NA NA < 9.7 NA NA NA NA VOCs Acetone ug/kg 450 440 490 NA 400 200 180 390 310 370 350 300 350 360 400 NA NA NA NA NA < 19 NA NA NA NA VOCs Benzene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Bromodichloromethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Bromoform ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Bromomethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Carbon disulfide ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Carbon tetrachloride ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Chlorobenzene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Chloroethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Chloroform ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Chloromethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs cis-1,2-Dichloroethene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 < 18 < 41 < 8.6 < 9.8 < 22 < 4.9 < 8.7 < 7.1 < 6.2 < 10 VOCs cis-1,3-Dichloropropene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Cyclohexane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Dibromochloromethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Dichlorodifluoromethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Ethylbenzene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA Page 8 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-32 SED-32 SED-33 SED-33 SED-33 SED-34 SED-34 SED-35 SED-35 SED-36 SED-36 SED-37 SED-37 SED-37 SED-38 SED-38 SED-38 SED-38 SED-38 SED-38 SED-39 SED-39 SED-39 SED-39 SED-39 Depth 0 - 6 in 6 - 12 in 0 - 6 in 12 - 16 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in Type N N N N N N N N N N N N N FD N N N N FD N N N N N N Date 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/21/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/22/2019 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/22/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 Group Analyte Unit RUSL IUSL VOCs Methyl acetate ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Methyl tert-butyl ether ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Methylcyclohexane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Methylene chloride ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Styrene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Tetrachloroethene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 < 18 < 41 < 8.6 < 9.8 < 22 < 4.9 < 8.7 < 7.1 < 6.2 < 10 VOCs Toluene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs trans-1,2-Dichloroethene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 < 18 < 41 < 8.6 < 9.8 < 22 < 4.9 < 8.7 < 7.1 < 6.2 < 10 VOCs trans-1,3-Dichloropropene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Trichloroethene ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 < 18 < 41 < 8.6 < 9.8 < 22 < 4.9 < 8.7 < 7.1 < 6.2 < 10 VOCs Trichlorofluoromethane ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 NA NA NA NA NA < 4.9 NA NA NA NA VOCs Vinyl chloride ug/kg < 5.9 < 5.4 < 5.0 NA < 5.6 < 5.9 < 5.2 < 4.4 < 4.3 < 4.4 < 5.0 < 4.9 < 4.5 < 4.4 <6 < 18 < 41 < 8.6 < 9.8 < 22 < 4.9 < 8.7 < 7.1 < 6.2 < 10 VOCs Xylenes, Total ug/kg < 12 < 11 < 10 NA < 11 < 12 < 10 < 8.9 < 8.5 < 8.8 < 10 < 9.8 < 8.9 < 8.9 < 12 NA NA NA NA NA < 9.7 NA NA NA NA Page 9 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-40 SED-40 SED-40 SED-40 SED-40 SED-41 SED-41 SED-41 SED-41 SED-41 SED-42 SED-42 SED-42 SED-42 SED-42 SED-43 SED-43 SED-43 SED-44 SED-44 SED-44 SED-44 SED-45 SED-45 SED-45 Depth 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N N N N N N N N N N N N N N N N Date 11/22/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 11/25/2019 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/25/2019 11/11/2020 11/11/2020 11/11/2020 11/11/2020 11/25/2019 12/1/2020 12/1/2020 11/25/2019 12/1/2020 12/1/2020 12/1/2020 11/25/2019 12/2/2020 12/2/2020 Group Analyte Unit RUSL IUSL Chemical Ammonia mg/kg 242 1110 140 37.2 122 466 897 555 896 367 928 2110 593 807 1040 774 312 499 389 1070 299 580 586 1520 240 Chemical Nitrate as N mg/kg < 0.50 0.71 < 0.29 < 0.26 0.3 0.63 3.4 0.55 1 1.6 0.83 3 < 0.63 < 0.72 3.3 0.50 1.9 4.9 < 0.50 4.6 < 0.72 2.1 0.82 2.7 1.4 Chemical Fluoride mg/kg 1.65 J 3.95 2.09 1.42 0.668 J 2.68 J 14.6 2.10 J 5.77 5.18 5.15 J 26.5 2.21 J 2.03 J 7.98 14.9 2.67 J 9.10 3.04 J 32.3 15.3 19.3 7.90 103 < 3.96 Metals Aluminum mg/kg 20800 NA NA NA NA 27100 NA NA NA NA 27500 NA NA NA NA 15200 NA NA 27000 NA NA NA 19500 NA NA Metals Antimony mg/kg < 3.48 NA NA NA NA < 5.62 NA NA NA NA < 10.3 NA NA NA NA < 11.5 NA NA < 7.06 NA NA NA < 6.5 NA NA Metals Arsenic mg/kg 3.47 J NA NA NA NA 4.25 J NA NA NA NA 6.15 J NA NA NA NA 3.57 J NA NA 4.38 J NA NA NA 2.38 J NA NA Metals Barium mg/kg 137 NA NA NA NA 214 NA NA NA NA 220 NA NA NA NA 105 NA NA 207 NA NA NA 150 NA NA Metals Beryllium mg/kg 1.47 NA NA NA NA 2.01 NA NA NA NA 1.67 J NA NA NA NA 0.858 J NA NA 2.32 NA NA NA 1.32 J NA NA Metals Cadmium mg/kg < 0.87 NA NA NA NA < 1.4 NA NA NA NA < 2.58 NA NA NA NA < 2.87 NA NA < 1.76 NA NA NA < 1.62 NA NA Metals Calcium mg/kg 429 NA NA NA NA 754 NA NA NA NA 1520 NA NA NA NA 813 NA NA 679 NA NA NA 1170 NA NA Metals Chromium mg/kg 26.5 NA NA NA NA 29.4 NA NA NA NA 31.4 NA NA NA NA 15.6 NA NA 29.5 NA NA NA 23.6 NA NA Metals Cobalt mg/kg 10 NA NA NA NA 26.7 NA NA NA NA 17.8 NA NA NA NA 4.78 NA NA 10.2 NA NA NA 7.42 NA NA Metals Copper mg/kg 19.6 NA NA NA NA 25.8 NA NA NA NA 30.9 NA NA NA NA 16.7 NA NA 21.7 NA NA NA 18.9 NA NA Metals Iron mg/kg 16100 NA NA NA NA 24300 NA NA NA NA 25100 NA NA NA NA 8080 NA NA 17100 NA NA NA 11900 NA NA Metals Lead mg/kg 20.4 NA NA NA NA 21.9 NA NA NA NA 105 NA NA NA NA 16 NA NA 18.8 NA NA NA 40.4 NA NA Metals Magnesium mg/kg 2700 NA NA NA NA 2610 NA NA NA NA 1910 NA NA NA NA 1200 NA NA 2080 NA NA NA 2030 NA NA Metals Manganese mg/kg 250 NA NA NA NA 395 NA NA NA NA 463 NA NA NA NA 131 NA NA 254 NA NA NA 224 NA NA Metals Mercury ug/kg 55.5 J NA NA NA NA 72.4 J NA NA NA NA 119 J NA NA NA NA < 273 NA NA 69.9 J NA NA NA 107 J NA NA Metals Nickel mg/kg 11.3 NA NA NA NA 16.9 NA NA NA NA 16.8 NA NA NA NA 10.2 NA NA 17.5 NA NA NA 11.8 NA NA Metals Potassium mg/kg 1420 NA NA NA NA 1580 NA NA NA NA 1150 NA NA NA NA 684 NA NA 1230 NA NA NA 1010 NA NA Metals Selenium mg/kg < 5.22 NA NA NA NA < 8.43 NA NA NA NA < 15.5 NA NA NA NA < 17.2 NA NA < 10.6 NA NA NA < 9.74 NA NA Metals Silver mg/kg < 8.7 NA NA NA NA < 14 NA NA NA NA < 25.8 NA NA NA NA < 2.87 NA NA < 17.6 NA NA NA < 16.2 NA NA Metals Sodium mg/kg 48.5 NA NA NA NA 69 J NA NA NA NA 88.6 J NA NA NA NA 83.9 J NA NA 80.7 J NA NA NA 126 NA NA Metals Thallium mg/kg < 34.8 NA NA NA NA < 56.2 NA NA NA NA < 103 NA NA NA NA < 11.5 NA NA < 70.6 NA NA NA < 65 NA NA Metals Vanadium mg/kg 62.7 NA NA NA NA 85.8 NA NA NA NA 95.1 NA NA NA NA 36.5 NA NA 68.8 NA NA NA 49.9 NA NA Metals Zinc mg/kg 49.2 NA NA NA NA 68.9 NA NA NA NA 81 NA NA NA NA 53 NA NA 56.1 NA NA NA 49.1 NA NA Radiological Technetium-99 pCi/g 19 89400 0 ## 0.400 # 0.0850 # 0.137 # 0.199 # 0.995 # 1.12 0.216 # 0.185 # 0.0380 # 5.94 # 1.21 0.0327 # 0 ## 0.137 # 0 ## 0.226 # 0.00633 # 6.23 # 9.42 0 ## 4.33 2.83 # 0 ## 0 ## Radiological Uranium-233/234 pCi/g 13 3310 1.90 4.69 1.17 1.36 1.34 1.72 17.0 2.14 0.806 1.84 6.12 31.1 3.19 1.57 4.34 47.5 5.13 16.0 8.86 435 3.34 34.0 5.86 6.00 2.95 Radiological Uranium-235/236 pCi/g 8 39 0.131 0.362 0 ## 0.0645 # 0.0449 # 0.0394 # 0.789 0 ## 0.0600 # 0.0733 # 0.285 1.18 0.135 # 0.0342 # 0.248 # 2.32 0.211 # 0.873 0.377 24.3 0.0293 # 1.57 0.268 0.325 0.0545 # Radiological Uranium-238 pCi/g 14 179 1.24 2.29 1.09 1.23 1.43 1.41 3.38 1.87 0.925 1.29 2.23 7.57 1.50 1.58 1.68 12.1 1.87 4.50 2.62 98.7 2.70 8.74 2.20 1.92 1.48 Radiological Uranium-234 ug/kg < 17.4 NA NA NA NA < 26.9 NA NA NA NA < 52.5 NA NA NA NA < 55.9 NA NA < 32.5 NA NA NA < 34.5 NA NA Radiological Uranium-235 ug/kg 28.4 NA NA NA NA 17.8 J NA NA NA NA 156 NA NA NA NA 862 NA NA 238 NA NA NA 100 NA NA Radiological Uranium-238 ug/kg 3020 NA NA NA NA 2390 NA NA NA NA 7220 NA NA NA NA 31300 NA NA 9690 NA NA NA 4920 NA NA Radiological Total Uranium Isotopes ug/kg 3050 NA NA NA NA 2410 NA NA NA NA 7380 NA NA NA NA 32200 NA NA 9930 NA NA NA 5020 NA NA SVOCs 1,1'-Biphenyl ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 2,4,5-Trichlorophenol ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 2,4,6-Trichlorophenol ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 2,4-Dichlorophenol ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 2,4-Dimethylphenol ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 2,4-Dinitrophenol ug/kg < 1600 NA NA NA NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA < 320 NA NA NA < 320 NA NA SVOCs 2,4-Dinitrotoluene ug/kg < 630 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA < 130 NA NA NA < 130 NA NA SVOCs 2,6-Dinitrotoluene ug/kg < 630 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA < 130 NA NA NA < 130 NA NA SVOCs 2-Chloronaphthalene ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 2-Chlorophenol ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 2-Methylnaphthalene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs 2-Methylphenol ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 2-Nitroaniline ug/kg < 630 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA < 130 NA NA NA < 130 NA NA SVOCs 2-Nitrophenol ug/kg < 630 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA < 130 NA NA NA < 130 NA NA SVOCs 3,3'-Dichlorobenzidine ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 3-Nitroaniline ug/kg < 630 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA < 130 NA NA NA < 130 NA NA SVOCs 4,6-Dinitro-2-methylphenol ug/kg < 1600 NA NA NA NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA < 320 NA NA NA < 320 NA NA SVOCs 4-Bromophenyl phenyl ether ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 4-Chloro-3-methylphenol ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 4-Chloroaniline ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 4-Chlorophenyl phenyl ether ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs 4-Methylphenol ug/kg < 630 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA < 130 NA NA NA < 130 NA NA SVOCs 4-Nitroaniline ug/kg < 630 NA NA NA NA < 130 NA NA NA NA < 130 NA NA NA NA < 120 NA NA < 130 NA NA NA < 130 NA NA SVOCs 4-Nitrophenol ug/kg < 1600 NA NA NA NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA < 320 NA NA NA < 320 NA NA SVOCs Acenaphthene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Acenaphthylene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Acetophenone ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Anthracene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Atrazine ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Benz(a)anthracene ug/kg < 64 NA NA NA NA 19 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Benzaldehyde ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA 76 NA NA SVOCs Benzo(a)pyrene ug/kg < 64 NA NA NA NA 21 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Benzo(b)fluoranthene ug/kg < 64 NA NA NA NA 28 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Benzo(g,h,i)perylene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Benzo(k)fluoranthene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA Page 10 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-40 SED-40 SED-40 SED-40 SED-40 SED-41 SED-41 SED-41 SED-41 SED-41 SED-42 SED-42 SED-42 SED-42 SED-42 SED-43 SED-43 SED-43 SED-44 SED-44 SED-44 SED-44 SED-45 SED-45 SED-45 Depth 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N N N N N N N N N N N N N N N N Date 11/22/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 11/25/2019 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/25/2019 11/11/2020 11/11/2020 11/11/2020 11/11/2020 11/25/2019 12/1/2020 12/1/2020 11/25/2019 12/1/2020 12/1/2020 12/1/2020 11/25/2019 12/2/2020 12/2/2020 Group Analyte Unit RUSL IUSL SVOCs Bis(2-chloroethoxy)methane ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Bis(2-chloroethyl)ether ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Bis(2-chloroisopropyl)ether ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Bis(2-ethylhexyl)phthalate ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Butyl benzyl phthalate ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Caprolactam ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Carbazole ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Chrysene ug/kg < 64 NA NA NA NA 17 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Dibenz(a,h)anthracene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Dibenzofuran ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Diethyl phthalate ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Dimethyl phthalate ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Di-n-butyl phthalate ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Di-n-octyl phthalate ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Fluoranthene ug/kg < 64 NA NA NA NA 28 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Fluorene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Hexachlorobenzene ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Hexachlorobutadiene ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Hexachlorocyclopentadiene ug/kg < 1600 NA NA NA NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA < 320 NA NA NA < 320 NA NA SVOCs Hexachloroethane ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Indeno(1,2,3-cd)pyrene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Isophorone ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Naphthalene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Nitrobenzene ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs N-Nitrosodi-n-propylamine ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs N-Nitrosodiphenylamine ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Pentachlorophenol ug/kg < 1600 NA NA NA NA < 330 NA NA NA NA < 320 NA NA NA NA < 310 NA NA < 320 NA NA NA < 320 NA NA SVOCs Phenanthrene ug/kg < 64 NA NA NA NA < 13 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA SVOCs Phenol ug/kg < 320 NA NA NA NA < 66 NA NA NA NA < 66 NA NA NA NA < 63 NA NA < 66 NA NA NA < 65 NA NA SVOCs Pyrene ug/kg < 64 NA NA NA NA 27 NA NA NA NA < 13 NA NA NA NA < 13 NA NA < 13 NA NA NA < 13 NA NA VOCs (1-Methylethyl)-Benzene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,1,1-Trichloroethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,1,2,2-Tetrachloroethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,1,2-Trichloroethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,1-Dichloroethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,1-Dichloroethene ug/kg < 5.3 < 19 < 6.6 < 5.5 < 7.3 < 6.5 < 74 < 12 < 22 < 30 < 6.8 < 61 < 21 < 23 < 49 < 7.2 < 41 < 56 < 7.2 < 100 < 6.2 < 47 < 6.1 < 49 < 28 VOCs 1,2,4-Trichlorobenzene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,2-Dibromo-3-chloropropane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,2-Dibromoethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,2-Dichlorobenzene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,2-Dichloroethane ug/kg < 5.3 < 19 < 6.6 < 5.5 < 7.3 < 6.5 < 74 < 12 < 22 < 30 < 6.8 < 61 < 21 < 23 < 49 < 7.2 < 41 < 56 < 7.2 < 100 < 6.2 < 47 < 6.1 < 49 < 28 VOCs 1,2-Dichloropropane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,3-Dichlorobenzene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 1,4-Dichlorobenzene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs 2-Butanone ug/kg < 21 NA NA NA NA < 26 NA NA NA NA < 27 NA NA NA NA < 29 NA NA < 29 NA NA NA 29 NA NA VOCs 2-Hexanone ug/kg < 11 NA NA NA NA < 13 NA NA NA NA < 14 NA NA NA NA < 14 NA NA < 14 NA NA NA < 12 NA NA VOCs 4-Methyl-2-pentanone ug/kg < 11 NA NA NA NA < 13 NA NA NA NA < 14 NA NA NA NA < 14 NA NA < 14 NA NA NA < 12 NA NA VOCs Acetone ug/kg 260 NA NA NA NA 96 NA NA NA NA 59 NA NA NA NA 79 NA NA 57 NA NA NA 130 NA NA VOCs Benzene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Bromodichloromethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Bromoform ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Bromomethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Carbon disulfide ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Carbon tetrachloride ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Chlorobenzene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Chloroethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Chloroform ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Chloromethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs cis-1,2-Dichloroethene ug/kg < 5.3 < 19 < 6.6 < 5.5 < 7.3 < 6.5 < 74 < 12 < 22 < 30 < 6.8 < 61 < 21 < 23 < 49 < 7.2 < 41 < 56 < 7.2 < 100 < 6.2 < 47 < 6.1 < 49 < 28 VOCs cis-1,3-Dichloropropene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Cyclohexane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Dibromochloromethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Dichlorodifluoromethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Ethylbenzene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA Page 11 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-40 SED-40 SED-40 SED-40 SED-40 SED-41 SED-41 SED-41 SED-41 SED-41 SED-42 SED-42 SED-42 SED-42 SED-42 SED-43 SED-43 SED-43 SED-44 SED-44 SED-44 SED-44 SED-45 SED-45 SED-45 Depth 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 24 - 36 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N N N N N N N N N N N N N N N N Date 11/22/2019 11/19/2020 11/19/2020 11/19/2020 11/19/2020 11/25/2019 11/10/2020 11/10/2020 11/10/2020 11/10/2020 11/25/2019 11/11/2020 11/11/2020 11/11/2020 11/11/2020 11/25/2019 12/1/2020 12/1/2020 11/25/2019 12/1/2020 12/1/2020 12/1/2020 11/25/2019 12/2/2020 12/2/2020 Group Analyte Unit RUSL IUSL VOCs Methyl acetate ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Methyl tert-butyl ether ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Methylcyclohexane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Methylene chloride ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Styrene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Tetrachloroethene ug/kg < 5.3 < 19 < 6.6 < 5.5 < 7.3 < 6.5 < 74 < 12 < 22 < 30 < 6.8 < 61 < 21 < 23 < 49 < 7.2 < 41 < 56 < 7.2 < 100 < 6.2 < 47 < 6.1 < 49 < 28 VOCs Toluene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs trans-1,2-Dichloroethene ug/kg < 5.3 < 19 < 6.6 < 5.5 < 7.3 < 6.5 < 74 < 12 < 22 < 30 < 6.8 < 61 < 21 < 23 < 49 < 7.2 < 41 < 56 < 7.2 < 100 < 6.2 < 47 < 6.1 < 49 < 28 VOCs trans-1,3-Dichloropropene ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Trichloroethene ug/kg < 5.3 < 19 < 6.6 < 5.5 < 7.3 < 6.5 < 74 < 12 < 22 < 30 < 6.8 < 61 < 21 < 23 < 49 < 7.2 < 41 < 56 < 7.2 < 100 < 6.2 < 47 < 6.1 < 49 < 28 VOCs Trichlorofluoromethane ug/kg < 5.3 NA NA NA NA < 6.5 NA NA NA NA < 6.8 NA NA NA NA < 7.2 NA NA < 7.2 NA NA NA < 6.1 NA NA VOCs Vinyl chloride ug/kg < 5.3 < 19 < 6.6 < 5.5 < 7.3 < 6.5 < 74 < 12 < 22 < 30 < 6.8 < 61 < 21 < 23 < 49 < 7.2 < 41 < 56 < 7.2 < 100 < 6.2 < 47 < 6.1 < 49 < 28 VOCs Xylenes, Total ug/kg < 11 NA NA NA NA < 13 NA NA NA NA < 14 NA NA NA NA < 14 NA NA < 14 NA NA NA < 12 NA NA Page 12 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-46 SED-46 SED-46 SED-47 SED-47 SED-47 SED-48 SED-48 SED-48 SED-48 SED-48 SED-49 SED-49 SED-49 SED-50 SED-50 SED-50 SED-50 SED-51 SED-51 SED-52 SED-52 SED-53 SED-53 SED-54 SED-54 Depth 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N FD N N N N N N N N N N N N N N N N N Date 11/25/2019 12/2/2020 12/2/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 12/3/2020 12/3/2020 11/27/2019 11/27/2019 11/27/2019 11/27/2019 11/27/2019 11/27/2019 12/2/2019 12/2/2019 Group Analyte Unit RUSL IUSL Chemical Ammonia mg/kg 371 1980 863 1540 1200 1670 806 491 1080 57.4 112 209 378 280 750 1130 257 382 692 401 465 271 387 196 854 536 Chemical Nitrate as N mg/kg 0.62 5 1.8 0.59 < 4.7 < 8.2 0.63 < 6.4 0.70 < 1.5 < 1.7 0.58 < 5.6 < 2.8 0.53 < 6.7 < 3.8 6.1 0.72 0.51 < 0.50 0.61 < 0.50 < 0.50 0.63 0.68 Chemical Fluoride mg/kg 3.41 120 20.6 6.02 6.37 16.5 2.94 1.86 J 3.46 1.88 3.09 5.44 9.14 5.78 4.67 7.00 2.51 J 2.92 2.77 J 2.96 1.48 J 1.69 J 0.838 J 0.607 J 1.93 J 1.01 J Metals Aluminum mg/kg 25100 NA NA 22000 NA NA 26400 NA 20300 NA NA 14300 NA NA 22500 NA NA NA 20300 19900 24300 23900 23100 24100 27300 26800 Metals Antimony mg/kg < 6.1 NA NA < 8.72 NA NA < 5.01 NA < 5.68 NA NA < 7.62 NA NA < 6.52 NA NA NA < 5.8 < 5.66 < 4.58 < 4.27 < 3.46 < 31.3 < 7.44 < 5.3 Metals Arsenic mg/kg 3.99 J NA NA 4.19 J NA NA 3.85 J NA 3.38 J NA NA 2.12 J NA NA 3.64 J NA NA NA 2.25 J 3.3 J 4.4 J 3.09 J 3.44 J 3.75 J 6.54 J 4.47 J Metals Barium mg/kg 103 NA NA 188 NA NA 154 NA 146 NA NA 69.2 NA NA 178 NA NA NA 98 191 144 146 146 151 144 124 Metals Beryllium mg/kg 1.29 J NA NA 1.32 J NA NA 1.35 NA 1.19 J NA NA 0.727 J NA NA 1.62 J NA NA NA 1.17 J 1.93 1.6 1.93 1.77 2.52 1.61 J 1.64 Metals Cadmium mg/kg < 1.53 NA NA < 2.18 NA NA < 1.25 NA < 1.42 NA NA < 1.9 NA NA < 1.63 NA NA NA < 1.45 < 1.41 < 1.15 < 1.07 < 0.865 < 0.782 < 1.86 < 1.32 Metals Calcium mg/kg 620 NA NA 737 NA NA 408 NA 435 NA NA 258 NA NA 1120 NA NA NA 335 304 452 317 523 337 348 187 Metals Chromium mg/kg 26 NA NA 27 NA NA 26.9 NA 23 NA NA 13.9 NA NA 25.7 NA NA NA 25.1 26.1 29.7 34.6 30.2 32.5 34.5 33.4 Metals Cobalt mg/kg 5.51 NA NA 7.78 NA NA 7.53 NA 6.39 NA NA 3.57 NA NA 10.5 NA NA NA 5.3 11.5 7.14 10.3 8.5 13.7 6.78 7.1 Metals Copper mg/kg 19.6 NA NA 22.3 NA NA 26.4 NA 26.1 NA NA 11.3 NA NA 25.8 NA NA NA 19 20.8 20 19.6 23.5 21.8 25.6 21.1 Metals Iron mg/kg 12100 NA NA 13200 NA NA 12400 NA 9320 NA NA 6750 NA NA 15300 NA NA NA 9550 16100 17000 18500 15400 25200 18100 15800 Metals Lead mg/kg 33.8 NA NA 43.1 NA NA 37.4 NA 80 NA NA 11.5 NA NA 32.1 NA NA NA 24.2 17 23.9 23.4 26.9 16.9 29.8 25.9 Metals Magnesium mg/kg 1620 NA NA 1980 NA NA 1670 NA 1250 NA NA 1040 NA NA 2440 NA NA NA 1940 2810 2700 3020 2760 3810 2390 2700 Metals Manganese mg/kg 104 NA NA 242 NA NA 249 NA 286 NA NA 75.9 NA NA 368 NA NA NA 128 261 156 186 258 281 127 114 Metals Mercury ug/kg < 141 NA NA 106 J NA NA 107 J NA 118 J NA NA 87.2 J NA NA 108 J NA NA NA < 148 < 130 57.1 J 58.5 J 82.5 J 48.3 J 104 J 65.2 J Metals Nickel mg/kg 10.6 NA NA 12.9 NA NA 11.6 NA 9.87 NA NA 6.89 NA NA 13.8 NA NA NA 9.14 12 11.9 11.6 11.6 13.2 12.1 12.6 Metals Potassium mg/kg 946 NA NA 1080 NA NA 929 NA 708 NA NA 621 NA NA 1060 NA NA NA 1120 1560 1500 850 1350 1150 1310 1410 Metals Selenium mg/kg < 9.15 NA NA < 13.1 NA NA < 7.51 NA < 8.51 NA NA < 11.4 NA NA < 9.78 NA NA NA 2 J < 8.48 < 6.87 < 6.4 1.26 J 1.2 J < 11.2 1.34 J Metals Silver mg/kg < 15.3 NA NA < 2.18 NA NA < 12.5 NA < 1.42 NA NA < 1.9 NA NA < 16.3 NA NA NA < 1.45 < 14.1 < 11.5 < 10.7 < 8.65 < 7.82 < 18.6 < 13.2 Metals Sodium mg/kg 105 NA NA 129 NA NA 93.6 NA 112 NA NA 78.4 J NA NA 71.5 J NA NA NA 91.1 82.4 71.9 76.6 53.8 52.9 88 J 70.6 Metals Thallium mg/kg < 61 NA NA < 87.2 NA NA < 50.1 NA < 56.8 NA NA < 7.62 NA NA < 65.2 NA NA NA < 58 < 56.6 < 45.8 < 42.7 < 3.46 < 31.3 < 74.4 < 53 Metals Vanadium mg/kg 68.1 NA NA 50.3 NA NA 65.9 NA 57.7 NA NA 32.4 NA NA 62.1 NA NA NA 54.3 64.8 71.2 81 71 87.6 77.1 78.9 Metals Zinc mg/kg 38.6 NA NA 49.6 NA NA 46.4 NA 42.1 NA NA 27 NA NA 67.3 NA NA NA 34.7 55.7 51.5 54.7 52.7 63.9 54.1 53.4 Radiological Technetium-99 pCi/g 19 89400 0 ## 0 ## 0.110 # 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0 ## 0.910 # 0 ## 0 ## 0 ## 0 ## 4.89 # 0 ## 0 ## 0 ## 0 ## 1.51 # 0 ## Radiological Uranium-233/234 pCi/g 13 3310 4.02 11.6 10.4 3.18 3.32 4.86 2.57 2.49 2.43 1.63 2.11 4.59 5.10 2.85 3.64 6.83 1.00 2.33 2.10 1.27 1.77 1.88 2.15 2.06 1.78 1.48 Radiological Uranium-235/236 pCi/g 8 39 0.179 0.251 # 0.419 0.232 0.0528 # 0.0999 # 0.0910 # 0.154 # 0.0144 # 0.205 0.169 0.215 0.142 0.0436 # 0.104 # 0.351 0.139 0.152 # 0.178 # 0.0695 # 0.308 # 0.0494 # 0.194 0.0708 # 0.119 # 0.120 # Radiological Uranium-238 pCi/g 14 179 2.15 2.85 3.55 1.46 1.95 2.41 1.98 2.24 1.62 1.85 1.77 2.11 2.25 2.04 1.86 2.65 0.808 1.83 1.42 1.15 1.72 1.45 1.45 2.34 1.36 1.87 Radiological Uranium-234 ug/kg < 30.6 NA NA < 41.0 NA NA < 25.8 NA < 29.6 NA NA < 37.2 NA NA < 31.4 NA NA NA < 31.2 < 28.9 < 21.8 < 23.3 < 17.3 < 14.1 < 37.1 < 25.3 Radiological Uranium-235 ug/kg 48.9 NA NA 44 J NA NA 40.3 NA 37.4 J NA NA 81.9 NA NA 72.1 NA NA NA 28.2 J 20.6 J 26.8 J 29.5 J 29.2 24.7 22.6 J 26 J Radiological Uranium-238 ug/kg 3190 NA NA 2560 NA NA 3140 NA 2650 NA NA 4840 NA NA 4470 NA NA NA 2610 2450 2530 2690 3200 3290 2870 2990 Radiological Total Uranium Isotopes ug/kg 3240 NA NA 2600 NA NA 3180 NA 2690 NA NA 4920 NA NA 4540 NA NA NA 2640 2470 2560 2720 3230 3310 2890 3020 SVOCs 1,1'-Biphenyl ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 2,4,5-Trichlorophenol ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 2,4,6-Trichlorophenol ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 2,4-Dichlorophenol ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 2,4-Dimethylphenol ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 2,4-Dinitrophenol ug/kg < 320 NA NA < 320 NA NA < 320 NA < 1600 NA NA < 1600 NA NA < 1600 NA NA NA < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 SVOCs 2,4-Dinitrotoluene ug/kg < 130 NA NA < 120 NA NA < 130 NA < 630 NA NA < 630 NA NA < 640 NA NA NA < 620 < 630 < 640 < 620 < 640 < 630 < 630 < 620 SVOCs 2,6-Dinitrotoluene ug/kg < 130 NA NA < 120 NA NA < 130 NA < 630 NA NA < 630 NA NA < 640 NA NA NA < 620 < 630 < 640 < 620 < 640 < 630 < 630 < 620 SVOCs 2-Chloronaphthalene ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 2-Chlorophenol ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 2-Methylnaphthalene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs 2-Methylphenol ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 2-Nitroaniline ug/kg < 130 NA NA < 120 NA NA < 130 NA < 630 NA NA < 630 NA NA < 640 NA NA NA < 620 < 630 < 640 < 620 < 640 < 630 < 630 < 620 SVOCs 2-Nitrophenol ug/kg < 130 NA NA < 120 NA NA < 130 NA < 630 NA NA < 630 NA NA < 640 NA NA NA < 620 < 630 < 640 < 620 < 640 < 630 < 630 < 620 SVOCs 3,3'-Dichlorobenzidine ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 3-Nitroaniline ug/kg < 130 NA NA < 120 NA NA < 130 NA < 630 NA NA < 630 NA NA < 640 NA NA NA < 620 < 630 < 640 < 620 < 640 < 630 < 630 < 620 SVOCs 4,6-Dinitro-2-methylphenol ug/kg < 320 NA NA < 320 NA NA < 320 NA < 1600 NA NA < 1600 NA NA < 1600 NA NA NA < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 SVOCs 4-Bromophenyl phenyl ether ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 4-Chloro-3-methylphenol ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 4-Chloroaniline ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 4-Chlorophenyl phenyl ether ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs 4-Methylphenol ug/kg < 130 NA NA < 120 NA NA < 130 NA < 630 NA NA < 630 NA NA < 640 NA NA NA < 620 < 630 < 640 < 620 < 640 < 630 < 630 < 620 SVOCs 4-Nitroaniline ug/kg < 130 NA NA < 120 NA NA < 130 NA < 630 NA NA < 630 NA NA < 640 NA NA NA < 620 < 630 < 640 < 620 < 640 < 630 < 630 < 620 SVOCs 4-Nitrophenol ug/kg < 320 NA NA < 320 NA NA < 320 NA < 1600 NA NA < 1600 NA NA < 1600 NA NA NA < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 SVOCs Acenaphthene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Acenaphthylene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Acetophenone ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Anthracene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Atrazine ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Benz(a)anthracene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Benzaldehyde ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Benzo(a)pyrene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Benzo(b)fluoranthene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Benzo(g,h,i)perylene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Benzo(k)fluoranthene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 Page 13 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-46 SED-46 SED-46 SED-47 SED-47 SED-47 SED-48 SED-48 SED-48 SED-48 SED-48 SED-49 SED-49 SED-49 SED-50 SED-50 SED-50 SED-50 SED-51 SED-51 SED-52 SED-52 SED-53 SED-53 SED-54 SED-54 Depth 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N FD N N N N N N N N N N N N N N N N N Date 11/25/2019 12/2/2020 12/2/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 12/3/2020 12/3/2020 11/27/2019 11/27/2019 11/27/2019 11/27/2019 11/27/2019 11/27/2019 12/2/2019 12/2/2019 Group Analyte Unit RUSL IUSL SVOCs Bis(2-chloroethoxy)methane ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Bis(2-chloroethyl)ether ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Bis(2-chloroisopropyl)ether ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Bis(2-ethylhexyl)phthalate ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Butyl benzyl phthalate ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Caprolactam ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Carbazole ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Chrysene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Dibenz(a,h)anthracene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Dibenzofuran ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Diethyl phthalate ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Dimethyl phthalate ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Di-n-butyl phthalate ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Di-n-octyl phthalate ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Fluoranthene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Fluorene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Hexachlorobenzene ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Hexachlorobutadiene ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Hexachlorocyclopentadiene ug/kg < 320 NA NA < 320 NA NA < 320 NA < 1600 NA NA < 1600 NA NA < 1600 NA NA NA < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 SVOCs Hexachloroethane ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Indeno(1,2,3-cd)pyrene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Isophorone ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Naphthalene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Nitrobenzene ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs N-Nitrosodi-n-propylamine ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs N-Nitrosodiphenylamine ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Pentachlorophenol ug/kg < 320 NA NA < 320 NA NA < 320 NA < 1600 NA NA < 1600 NA NA < 1600 NA NA NA < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 < 1600 SVOCs Phenanthrene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 SVOCs Phenol ug/kg < 64 NA NA < 64 NA NA < 65 NA < 330 NA NA < 320 NA NA < 330 NA NA NA < 320 < 320 < 330 < 320 < 330 < 330 < 330 < 320 SVOCs Pyrene ug/kg < 13 NA NA < 13 NA NA < 13 NA < 65 NA NA < 64 NA NA < 66 NA NA NA < 63 < 64 < 66 < 64 < 65 < 65 < 65 < 63 VOCs (1-Methylethyl)-Benzene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,1,1-Trichloroethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,1,2,2-Tetrachloroethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,1,2-Trichloroethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,1-Dichloroethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,1-Dichloroethene ug/kg < 6.5 < 74 < 36 < 6.9 < 33 < 54 < 5.3 < 35 < 5.2 < 7.1 < 7.7 < 7.1 < 40 < 16 < 6.3 < 46 < 25 < 21 < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,2,4-Trichlorobenzene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,2-Dibromo-3-chloropropane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,2-Dibromoethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,2-Dichlorobenzene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,2-Dichloroethane ug/kg < 6.5 < 74 < 36 < 6.9 < 33 < 54 < 5.3 < 35 < 5.2 < 7.1 < 7.7 < 7.1 < 40 < 16 < 6.3 < 46 < 25 < 21 < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,2-Dichloropropane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,3-Dichlorobenzene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 1,4-Dichlorobenzene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs 2-Butanone ug/kg < 26 NA NA 160 NA NA 39 NA 23 NA NA < 28 NA NA 190 NA NA NA 43 < 27 31 < 26 < 22 < 21 42 < 25 VOCs 2-Hexanone ug/kg < 13 NA NA < 14 NA NA < 11 NA < 10 NA NA < 14 NA NA < 13 NA NA NA < 13 < 13 < 12 < 13 < 11 < 10 < 13 < 13 VOCs 4-Methyl-2-pentanone ug/kg < 13 NA NA < 14 NA NA < 11 NA < 10 NA NA < 14 NA NA < 13 NA NA NA < 13 < 13 < 12 < 13 < 11 < 10 < 13 < 13 VOCs Acetone ug/kg 110 NA NA 410 NA NA 220 NA 280 NA NA 300 NA NA 370 NA NA NA 330 180 100 < 26 < 22 170 330 39 VOCs Benzene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Bromodichloromethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Bromoform ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Bromomethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Carbon disulfide ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Carbon tetrachloride ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Chlorobenzene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Chloroethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Chloroform ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Chloromethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs cis-1,2-Dichloroethene ug/kg < 6.5 < 74 < 36 < 6.9 < 33 < 54 < 5.3 < 35 < 5.2 < 7.1 < 7.7 < 7.1 < 40 < 16 < 6.3 < 46 < 25 < 21 < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs cis-1,3-Dichloropropene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Cyclohexane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Dibromochloromethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Dichlorodifluoromethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Ethylbenzene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 Page 14 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-46 SED-46 SED-46 SED-47 SED-47 SED-47 SED-48 SED-48 SED-48 SED-48 SED-48 SED-49 SED-49 SED-49 SED-50 SED-50 SED-50 SED-50 SED-51 SED-51 SED-52 SED-52 SED-53 SED-53 SED-54 SED-54 Depth 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N FD N N N N N N N N N N N N N N N N N Date 11/25/2019 12/2/2020 12/2/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 12/3/2020 11/26/2019 12/3/2020 12/3/2020 12/3/2020 11/27/2019 11/27/2019 11/27/2019 11/27/2019 11/27/2019 11/27/2019 12/2/2019 12/2/2019 Group Analyte Unit RUSL IUSL VOCs Methyl acetate ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 12 < 6.3 VOCs Methyl tert-butyl ether ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Methylcyclohexane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Methylene chloride ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Styrene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Tetrachloroethene ug/kg < 6.5 < 74 < 36 < 6.9 < 33 < 54 < 5.3 < 35 < 5.2 < 7.1 < 7.7 < 7.1 < 40 < 16 < 6.3 < 46 < 25 < 21 < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Toluene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA 8.7 < 6.7 10 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs trans-1,2-Dichloroethene ug/kg < 6.5 < 74 < 36 < 6.9 < 33 < 54 < 5.3 < 35 < 5.2 < 7.1 < 7.7 < 7.1 < 40 < 16 < 6.3 < 46 < 25 < 21 < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs trans-1,3-Dichloropropene ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Trichloroethene ug/kg < 6.5 < 74 < 36 < 6.9 < 33 < 54 < 5.3 < 35 < 5.2 < 7.1 < 7.7 < 7.1 < 40 < 16 < 6.3 < 46 < 25 < 21 < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Trichlorofluoromethane ug/kg < 6.5 NA NA < 6.9 NA NA < 5.3 NA < 5.2 NA NA < 7.1 NA NA < 6.3 NA NA NA < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Vinyl chloride ug/kg < 6.5 < 74 < 36 < 6.9 < 33 < 54 < 5.3 < 35 < 5.2 < 7.1 < 7.7 < 7.1 < 40 < 16 < 6.3 < 46 < 25 < 21 < 6.6 < 6.7 < 6.2 < 6.4 < 5.4 < 5.2 < 6.6 < 6.3 VOCs Xylenes, Total ug/kg < 13 NA NA < 14 NA NA < 11 NA < 10 NA NA < 14 NA NA < 13 NA NA NA < 13 < 13 < 12 < 13 < 11 < 10 < 13 < 13 Page 15 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-55 SED-55 SED-56 SED-56 SED-56 SED-57 SED-57 SED-57 SED-58 SED-58 SED-59 SED-59 SED-60 SED-60 SED-61 SED-61 SED-61 SED-61 SED-62 SED-62 SED-62 SED-62 SED-63 SED-63 SED-64 SED-64 Depth 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N FD N N N N N N N N N N N FD N N N N N FD N N N N Date 12/2/2019 12/2/2019 12/2/2019 12/2/2019 12/2/2019 12/4/2020 12/4/2020 12/4/2020 12/4/2020 12/4/2020 12/3/2020 12/3/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 Group Analyte Unit RUSL IUSL Chemical Ammonia mg/kg 321 223 449 325 244 NA NA NA NA NA NA NA 45.7 57.3 14.1 9.39 30.2 17.0 160 240 218 159 218 126 311 283 Chemical Nitrate as N mg/kg < 0.50 < 0.50 0.52 0.74 < 0.50 NA NA NA NA NA NA NA 0.27 0.29 0.93 0.85 0.38 0.5 0.51 < 0.26 < 0.26 < 0.26 < 0.28 < 0.26 0.29 < 0.25 Chemical Fluoride mg/kg < 1.88 < 1.76 < 1.89 < 1.96 0.690 J NA NA NA NA NA NA NA 19.2 14.1 3.47 3.04 15.2 5.29 45.7 39.0 43.5 34.4 37.7 24.9 49.4 33.7 Metals Aluminum mg/kg 29400 29300 27000 27200 27300 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Antimony mg/kg < 3.66 < 3.04 < 3.6 < 3.47 < 3.26 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Arsenic mg/kg 4.6 J 4.56 4.54 J 4.87 J 5.26 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Barium mg/kg 153 159 166 170 190 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Beryllium mg/kg 1.88 3.39 2.21 2.28 4.25 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Cadmium mg/kg < 0.914 < 0.759 < 0.899 < 0.867 < 0.815 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Calcium mg/kg 191 190 289 297 202 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Chromium mg/kg 36.4 35.9 33.4 34.1 33 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Cobalt mg/kg 8.47 15.6 8.86 9.36 13.4 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Copper mg/kg 24.3 26.8 25.4 26.4 28.6 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Iron mg/kg 19100 21900 17100 18700 21400 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Lead mg/kg 33.9 17 31.5 30 18.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Magnesium mg/kg 2920 3650 2740 3040 3960 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Manganese mg/kg 175 264 173 194 250 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Mercury ug/kg 76.6 J 54.2 J 74.6 J 83.7 41 J NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Nickel mg/kg 13.5 15.5 13.5 13.9 17.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Potassium mg/kg 1370 834 1170 1280 1150 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Selenium mg/kg < 5.48 1.24 J 1.3 J < 5.2 < 4.89 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Silver mg/kg < 9.14 < 7.59 < 8.99 < 8.67 < 8.15 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Sodium mg/kg 84.1 87 63.2 71.3 69.8 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Thallium mg/kg < 36.6 < 30.4 < 36 < 34.7 < 3.26 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Vanadium mg/kg 93.2 86.2 81.8 86.9 79.8 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Zinc mg/kg 56.1 70.8 55.6 59.1 83.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Radiological Technetium-99 pCi/g 19 89400 6.19 # 0 ## 2.53 # 0 ## 0 ## NA NA NA NA NA NA NA 0.433 # 0.483 # 1.20 1.12 8.28 7.96 22.9 1.08 2.89 2.98 25.0 2.63 85.8 5.53 Radiological Uranium-233/234 pCi/g 13 3310 2.05 1.62 2.02 2.82 1.89 2.22 1.49 1.63 1.21 1.38 2.09 1.52 39.7 44.4 4.29 15.1 3.86 9.17 1.21 1.84 1.57 1.60 0.853 0.760 1.30 1.11 Radiological Uranium-235/236 pCi/g 8 39 0 ## 0.155 0.214 0.115 # 0.0276 # 0.110 # 0# 0.101 # 0.0516 # 0.0321 # 0.0517 # 0.0494 # 2.19 1.81 0.244 # 0.789 0.186 0.267 0.167 # 0 ## 0.0659 # 0.0636 # 0.148 # 0.0985 # 0.0856 # 0.0301 # Radiological Uranium-238 pCi/g 14 179 1.74 1.62 1.40 2.11 1.72 1.82 2.05 1.74 1.37 1.15 1.88 1.27 7.42 8.17 0.818 3.50 1.95 2.79 1.73 1.12 2.00 1.35 0.875 0.649 1.18 1.32 Radiological Uranium-234 ug/kg < 18.3 < 16.0 < 17.2 < 18.8 < 16.4 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Radiological Uranium-235 ug/kg 25.4 J 23.2 23 J 24.5 J 21.7 J NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Radiological Uranium-238 ug/kg 3450 3230 3100 3440 2970 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Radiological Total Uranium Isotopes ug/kg 3480 3250 3120 3460 2990 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 1,1'-Biphenyl ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4,5-Trichlorophenol ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4,6-Trichlorophenol ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4-Dichlorophenol ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4-Dimethylphenol ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4-Dinitrophenol ug/kg < 1600 < 1600 < 1600 < 1600 < 1600 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4-Dinitrotoluene ug/kg < 630 < 640 < 640 < 640 < 640 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,6-Dinitrotoluene ug/kg < 630 < 640 < 640 < 640 < 640 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Chloronaphthalene ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Chlorophenol ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Methylnaphthalene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Methylphenol ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Nitroaniline ug/kg < 630 < 640 < 640 < 640 < 640 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Nitrophenol ug/kg < 630 < 640 < 640 < 640 < 640 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 3,3'-Dichlorobenzidine ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 3-Nitroaniline ug/kg < 630 < 640 < 640 < 640 < 640 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4,6-Dinitro-2-methylphenol ug/kg < 1600 < 1600 < 1600 < 1600 < 1600 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Bromophenyl phenyl ether ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Chloro-3-methylphenol ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Chloroaniline ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Chlorophenyl phenyl ether ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Methylphenol ug/kg < 630 < 640 < 640 < 640 < 640 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Nitroaniline ug/kg < 630 < 640 < 640 < 640 < 640 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Nitrophenol ug/kg < 1600 < 1600 < 1600 < 1600 < 1600 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Acenaphthene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Acenaphthylene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Acetophenone ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Anthracene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Atrazine ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benz(a)anthracene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzaldehyde ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzo(a)pyrene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzo(b)fluoranthene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzo(g,h,i)perylene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzo(k)fluoranthene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Page 16 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-55 SED-55 SED-56 SED-56 SED-56 SED-57 SED-57 SED-57 SED-58 SED-58 SED-59 SED-59 SED-60 SED-60 SED-61 SED-61 SED-61 SED-61 SED-62 SED-62 SED-62 SED-62 SED-63 SED-63 SED-64 SED-64 Depth 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N FD N N N N N N N N N N N FD N N N N N FD N N N N Date 12/2/2019 12/2/2019 12/2/2019 12/2/2019 12/2/2019 12/4/2020 12/4/2020 12/4/2020 12/4/2020 12/4/2020 12/3/2020 12/3/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 Group Analyte Unit RUSL IUSL SVOCs Bis(2-chloroethoxy)methane ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Bis(2-chloroethyl)ether ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Bis(2-chloroisopropyl)ether ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Bis(2-ethylhexyl)phthalate ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Butyl benzyl phthalate ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Caprolactam ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Carbazole ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Chrysene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Dibenz(a,h)anthracene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Dibenzofuran ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Diethyl phthalate ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Dimethyl phthalate ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Di-n-butyl phthalate ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Di-n-octyl phthalate ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Fluoranthene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Fluorene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Hexachlorobenzene ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Hexachlorobutadiene ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Hexachlorocyclopentadiene ug/kg < 1600 < 1600 < 1600 < 1600 < 1600 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Hexachloroethane ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Indeno(1,2,3-cd)pyrene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Isophorone ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Naphthalene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Nitrobenzene ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs N-Nitrosodi-n-propylamine ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs N-Nitrosodiphenylamine ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Pentachlorophenol ug/kg < 1600 < 1600 < 1600 < 1600 < 1600 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Phenanthrene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Phenol ug/kg < 320 < 330 < 330 < 330 < 330 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Pyrene ug/kg < 64 < 65 < 66 < 65 < 66 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs (1-Methylethyl)-Benzene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1,1-Trichloroethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1,2,2-Tetrachloroethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1,2-Trichloroethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1-Dichloroethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1-Dichloroethene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA < 4.9 < 5.1 < 5.6 < 5.7 < 4.4 <5 < 8.9 < 5.2 <5 < 5.1 < 5.6 <5 < 6.6 < 4.8 VOCs 1,2,4-Trichlorobenzene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dibromo-3-chloropropane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dibromoethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dichlorobenzene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dichloroethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA < 4.9 < 5.1 < 5.6 < 5.7 < 4.4 <5 < 8.9 < 5.2 <5 < 5.1 < 5.6 <5 < 6.6 < 4.8 VOCs 1,2-Dichloropropane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,3-Dichlorobenzene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,4-Dichlorobenzene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 2-Butanone ug/kg < 19 < 20 < 21 < 19 < 14 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 2-Hexanone ug/kg < 9.7 < 9.8 < 10 < 9.7 < 7.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 4-Methyl-2-pentanone ug/kg < 9.7 < 9.8 < 10 < 9.7 < 7.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Acetone ug/kg < 19 200 220 23 < 14 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Benzene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Bromodichloromethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Bromoform ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Bromomethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Carbon disulfide ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Carbon tetrachloride ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Chlorobenzene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Chloroethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Chloroform ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Chloromethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs cis-1,2-Dichloroethene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA < 4.9 < 5.1 < 5.6 < 5.7 < 4.4 <5 < 8.9 < 5.2 <5 < 5.1 < 5.6 <5 < 6.6 < 4.8 VOCs cis-1,3-Dichloropropene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Cyclohexane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Dibromochloromethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Dichlorodifluoromethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Ethylbenzene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Page 17 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-55 SED-55 SED-56 SED-56 SED-56 SED-57 SED-57 SED-57 SED-58 SED-58 SED-59 SED-59 SED-60 SED-60 SED-61 SED-61 SED-61 SED-61 SED-62 SED-62 SED-62 SED-62 SED-63 SED-63 SED-64 SED-64 Depth 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 6 - 12 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 0 - 6 in 12 - 18 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N FD N N N N N N N N N N N FD N N N N N FD N N N N Date 12/2/2019 12/2/2019 12/2/2019 12/2/2019 12/2/2019 12/4/2020 12/4/2020 12/4/2020 12/4/2020 12/4/2020 12/3/2020 12/3/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/18/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 11/17/2020 Group Analyte Unit RUSL IUSL VOCs Methyl acetate ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Methyl tert-butyl ether ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Methylcyclohexane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Methylene chloride ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Styrene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Tetrachloroethene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA < 4.9 < 5.1 < 5.6 < 5.7 < 4.4 <5 < 8.9 < 5.2 <5 < 5.1 < 5.6 <5 < 6.6 < 4.8 VOCs Toluene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs trans-1,2-Dichloroethene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA < 4.9 < 5.1 < 5.6 < 5.7 < 4.4 <5 < 8.9 < 5.2 <5 < 5.1 < 5.6 <5 < 6.6 < 4.8 VOCs trans-1,3-Dichloropropene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Trichloroethene ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA < 4.9 < 5.1 < 5.6 < 5.7 < 4.4 <5 < 8.9 < 5.2 <5 < 5.1 < 5.6 <5 < 6.6 < 4.8 VOCs Trichlorofluoromethane ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Vinyl chloride ug/kg < 4.9 < 4.9 < 5.2 < 4.8 < 3.5 NA NA NA NA NA NA NA < 4.9 < 5.1 < 5.6 < 5.7 < 4.4 <5 < 8.9 < 5.2 <5 < 5.1 < 5.6 <5 < 6.6 < 4.8 VOCs Xylenes, Total ug/kg < 9.7 < 9.8 < 10 < 9.7 < 7.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Page 18 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-65 SED-65 SED-66 SED-66 SED-66 SED-67 SED-67 SED-67 SED-68 SED-68 SED-68 SED-68 SED-B1 SED-B1 SED-B2 SED-B2 SED-B3 SED-B3 SED-B4 SED-B4 SED-B5 SED-B5 SED-B6 SED-B6 SED-B7 SED-B7 SED-B8 SED-B8 Depth 0 - 6 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 12 - 24 in 12 - 24 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N FD N N N N N N N N N N N N N N N N N Date 11/16/2020 11/16/2020 3/9/2021 3/9/2021 3/9/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/10/2021 3/10/2021 3/10/2021 3/10/2021 3/9/2021 3/9/2021 3/9/2021 3/9/2021 3/10/2021 3/10/2021 3/10/2021 3/10/2021 3/9/2021 3/9/2021 3/9/2021 3/9/2021 Group Analyte Unit RUSL IUSL Chemical Ammonia mg/kg 156 276 785 745 563 623 518 611 84.7 80.9 72.2 89.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Chemical Nitrate as N mg/kg 0.47 < 0.26 < 2.5 < 0.5 < 2.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Chemical Fluoride mg/kg 40.6 33.6 20.9 4.21 10.4 30.4 9.43 10.5 4.43 4.53 4.66 4.46 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Aluminum mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Antimony mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Arsenic mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Barium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Beryllium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Cadmium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Calcium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Chromium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Cobalt mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Copper mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Iron mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Lead mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Magnesium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Manganese mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Mercury ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Nickel mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Potassium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Selenium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Silver mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Sodium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Thallium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Vanadium mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Metals Zinc mg/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Radiological Technetium-99 pCi/g 19 89400 312 8.41 2.16 0.184 # 0.770 1.83 0.461 # 0.639 # 0.0815 # 0.0594 # 0.156 # 0 ## 23.7 0.295 # 19.1 0.720 # 4.37 5.34 1.05 0.383 # 0.565 # 1.40 1.13 1.36 3.71 0.472 # 0.937 1.40 Radiological Uranium-233/234 pCi/g 13 3310 1.01 1.12 14.5 1.52 4.75 14.8 2.57 2.78 1.02 1.23 1.30 1.26 401 3.15 267 5.45 47.2 90.6 33.6 10.4 30.0 4.43 30.4 7.98 24.7 5.49 43.7 37.6 Radiological Uranium-235/236 pCi/g 8 39 0.113 # 0 ## 0.637 0.156 0.265 0.743 0.155 0.118 # 0.0106 # 0.0471 # 0.0530 # 0.0732 # 26.9 0.315 15.8 0.405 2.56 4.75 2.25 0.384 1.36 0.178 # 1.82 0.447 1.13 0.275 1.92 1.92 Radiological Uranium-238 pCi/g 14 179 0.726 0.791 4.19 1.19 2.46 4.41 1.60 1.39 1.45 0.615 0.955 1.08 95.7 2.01 60.3 2.30 13.1 22.1 7.78 3.49 7.25 2.29 6.94 2.89 6.32 3.16 11.0 8.65 Radiological Uranium-234 ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Radiological Uranium-235 ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Radiological Uranium-238 ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Radiological Total Uranium Isotopes ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 1,1'-Biphenyl ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4,5-Trichlorophenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4,6-Trichlorophenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4-Dichlorophenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4-Dimethylphenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4-Dinitrophenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,4-Dinitrotoluene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2,6-Dinitrotoluene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Chloronaphthalene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Chlorophenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Methylnaphthalene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Methylphenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Nitroaniline ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 2-Nitrophenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 3,3'-Dichlorobenzidine ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 3-Nitroaniline ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4,6-Dinitro-2-methylphenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Bromophenyl phenyl ether ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Chloro-3-methylphenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Chloroaniline ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Chlorophenyl phenyl ether ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Methylphenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Nitroaniline ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs 4-Nitrophenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Acenaphthene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Acenaphthylene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Acetophenone ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Anthracene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Atrazine ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benz(a)anthracene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzaldehyde ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzo(a)pyrene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzo(b)fluoranthene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzo(g,h,i)perylene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Benzo(k)fluoranthene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Page 19 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-65 SED-65 SED-66 SED-66 SED-66 SED-67 SED-67 SED-67 SED-68 SED-68 SED-68 SED-68 SED-B1 SED-B1 SED-B2 SED-B2 SED-B3 SED-B3 SED-B4 SED-B4 SED-B5 SED-B5 SED-B6 SED-B6 SED-B7 SED-B7 SED-B8 SED-B8 Depth 0 - 6 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 12 - 24 in 12 - 24 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N FD N N N N N N N N N N N N N N N N N Date 11/16/2020 11/16/2020 3/9/2021 3/9/2021 3/9/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/10/2021 3/10/2021 3/10/2021 3/10/2021 3/9/2021 3/9/2021 3/9/2021 3/9/2021 3/10/2021 3/10/2021 3/10/2021 3/10/2021 3/9/2021 3/9/2021 3/9/2021 3/9/2021 Group Analyte Unit RUSL IUSL SVOCs Bis(2-chloroethoxy)methane ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Bis(2-chloroethyl)ether ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Bis(2-chloroisopropyl)ether ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Bis(2-ethylhexyl)phthalate ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Butyl benzyl phthalate ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Caprolactam ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Carbazole ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Chrysene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Dibenz(a,h)anthracene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Dibenzofuran ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Diethyl phthalate ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Dimethyl phthalate ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Di-n-butyl phthalate ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Di-n-octyl phthalate ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Fluoranthene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Fluorene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Hexachlorobenzene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Hexachlorobutadiene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Hexachlorocyclopentadiene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Hexachloroethane ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Indeno(1,2,3-cd)pyrene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Isophorone ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Naphthalene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Nitrobenzene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs N-Nitrosodi-n-propylamine ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs N-Nitrosodiphenylamine ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Pentachlorophenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Phenanthrene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Phenol ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SVOCs Pyrene ug/kg NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs (1-Methylethyl)-Benzene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1,1-Trichloroethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1,2,2-Tetrachloroethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1,2-Trichlor-1,2,2-trifluoroethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1,2-Trichloroethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1-Dichloroethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,1-Dichloroethene ug/kg < 5.4 < 4.6 < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2,4-Trichlorobenzene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dibromo-3-chloropropane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dibromoethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dichlorobenzene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dichloroethane ug/kg < 5.4 < 4.6 < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,2-Dichloropropane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,3-Dichlorobenzene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 1,4-Dichlorobenzene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 2-Butanone ug/kg NA NA 73 46 26 < 28 < 25 < 23 < 18 < 16 < 17 < 17 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 2-Hexanone ug/kg NA NA < 12 < 11 < 11 < 14 < 12 < 11 < 9.1 < 8.2 < 8.4 < 8.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs 4-Methyl-2-pentanone ug/kg NA NA < 12 < 11 < 11 < 14 < 12 < 11 < 9.1 < 8.2 < 8.4 < 8.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Acetone ug/kg NA NA 220 160 120 72 66 48 87 82 57 58 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Benzene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Bromodichloromethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Bromoform ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Bromomethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Carbon disulfide ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Carbon tetrachloride ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Chlorobenzene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Chloroethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Chloroform ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Chloromethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs cis-1,2-Dichloroethene ug/kg < 5.4 < 4.6 < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs cis-1,3-Dichloropropene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Cyclohexane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Dibromochloromethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Dichlorodifluoromethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Ethylbenzene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Page 20 of 21
Table T4 - Sediment Analytical Results Westinghouse Columbia Fuel Fabrication Facility, Hopkins, SC Location SED-65 SED-65 SED-66 SED-66 SED-66 SED-67 SED-67 SED-67 SED-68 SED-68 SED-68 SED-68 SED-B1 SED-B1 SED-B2 SED-B2 SED-B3 SED-B3 SED-B4 SED-B4 SED-B5 SED-B5 SED-B6 SED-B6 SED-B7 SED-B7 SED-B8 SED-B8 Depth 0 - 6 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 12 - 24 in 6 - 12 in 0 - 6 in 12 - 24 in 12 - 24 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in 0 - 6 in 6 - 12 in Type N N N N N N N N N N FD N N N N N N N N N N N N N N N N N Date 11/16/2020 11/16/2020 3/9/2021 3/9/2021 3/9/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/8/2021 3/10/2021 3/10/2021 3/10/2021 3/10/2021 3/9/2021 3/9/2021 3/9/2021 3/9/2021 3/10/2021 3/10/2021 3/10/2021 3/10/2021 3/9/2021 3/9/2021 3/9/2021 3/9/2021 Group Analyte Unit RUSL IUSL VOCs Methyl acetate ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Methyl tert-butyl ether ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Methylcyclohexane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Methylene chloride ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Styrene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Tetrachloroethene ug/kg < 5.4 < 4.6 < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Toluene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs trans-1,2-Dichloroethene ug/kg < 5.4 < 4.6 < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs trans-1,3-Dichloropropene ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Trichloroethene ug/kg < 5.4 < 4.6 < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Trichlorofluoromethane ug/kg NA NA < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Vinyl chloride ug/kg < 5.4 < 4.6 < 5.9 < 5.5 < 5.3 < 7.1 < 6.2 < 5.7 < 4.6 < 4.1 < 4.2 < 4.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA VOCs Xylenes, Total ug/kg NA NA < 12 < 11 < 11 < 14 < 12 < 11 < 9.1 < 8.2 < 8.4 < 8.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Notes: RUSL - Residential Use Screening Level (NUREG 1757, Appendix H) ## - value shown as zero reported by analytical laboratory as a negative number IUSL - Industrial Use Screening Level (NUREG 1757, Appendix H) SVOCs - semivolatile organic compounds Concentrations in orange shaded cells exceed their RUSL VOCs - volatile organic compounds Concentrations in blue shaded cells exceed their IUSL NA - not analyzed pCi/g - picocuires per gram * - sludge sample collected from the Sanitary Lagoon ug/kg - micrograms per kilogram ** - sludge sample collected from the East Lagoon mg/kg - milligrams per kilogram N - normal sample FD - field duplicate sample Bold concentrations indicate detections J - result below reporting limit
# - value is below minimum detectable concentration Page 21 of 21
Remedial Investigation Report Appendix U Surface Water and Sediment Analytical Results (on DVD) AECOM
Remedial Investigation Report Appendix V 2022 Leidos Phase II Sediment TBD AECOM
Technical Basis Document Remedial Investigation Phase II Soil and Sediment Sampling and Sediment Transect Evaluation for the Westinghouse Columbia Fuel Fabrication Facility (WCFFF) - Revision 1 Prepared for: Westinghouse Columbia Fuel Fabrication Facility 5801 Bluff Road Hopkins, South Carolina 29061-9121 Prepared by:
~ le id os __________________________
13397 Lakefront Drive, Suite 100 W. Clark Evers, CHP, CSP Earth City, Missouri 63045 Certified Health Physicist May 27, 2022 1
Revision Log Revision Date:
Description:
Number: 0 7/28/21 Initial issuance of the report. 1 5/27/22 Dose and risk assessment was updated to include additional sample data collected from the site drainage Middle Ditch after the RI Phase II sampling was originally completed. While the conclusions of the report did not change, new data was available, and evaluated. This report was updated to reflect that evaluation, and its results. Remedial Investigation fieldwork was completed in October 2021, resultantly this revision of the TBD removed all references to this being an interim evaluation. 2
Remedial Investigation Process The Westinghouse Columbia Fuel Fabrication Facility (WCFFF) has performed a site Remedial Investigation (RI) in accordance with a Consent Agreement with the South Carolina Department of Health and Environmental Control (SCDHEC). Westinghouse and SCDHEC entered into this Consent Agreement in February 2019. The purpose of the RI is to complete a comprehensive evaluation of groundwater, surface water, sediment, and soils at the site to determine the source, nature and extent of impacts from historic activities. Following completion of the RI, the Consent Agreement requires WCFFF to perform a Feasibility Study (FS) to evaluate remedial alternatives. After SCDHEC approval of the FS, the Department will issue a Record of Decision (ROD) specifying the selected remedy or set of remedies for the site. WCFFF will then implement these remedies per a SCDHEC approved Remedial Design/Remedial Action Plan and issue a final report documenting remediation of the site and successful completion of the Consent Agreement. This Technical Basis Document (TBD) provides the evaluation of the sediment and soil data collected under the RI. This assessment will be included as part of the Final Remedial Investigation report. Remedial alternatives will be evaluated in the FS. Three significant sampling campaigns have been conducted across the site. Sampling in Phase I of the RI was completed to gain a better understanding of the site conditions; additional sampling was completed in Phase II of the RI to fully characterize sediment impacts; subsequently, an addendum was completed to perform bounding sampling based on the results of the Phase II investigation in the Mill Creek Corridor. These sampling events, in addition to the ongoing routine environmental sampling program, have been evaluated, and a bounding assessment has been performed by evaluating the dose and risk associated with the areas where elevated concentrations have been identified. The results of these comprehensive sampling campaigns have defined the limited horizontal and vertical extent of sediment and soil impact. There are no current or future concerns for contaminants to potentially move offsite, and the documented impacts pose no potentially significant threat to plant workers, the general public, or the environment. 3
RI Phase I Assessment During Phase I of the RI, sediment samples were collected from various areas of the site including the Mill Creek Corridor. Prominent features of the Westinghouse Columbia Site, including the Middle Ditch and the Mill Creek Corridor are identified in Figure 1. The locations of the RI Phase I sediment transects are shown in Figure 2. Figure 1 - Mill Creek Corridor
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Sediment Sampte Locations Mill Creek is a naturally meandering creek that was dammed to create Upper and Lower Sunset Lake, prior to the establishment of the Westinghouse Columbia site. A diversion canal was also created that redirected a majority of the water flow, limiting the volume of water in Upper and Lower Sunset Lake, and creating nearly stagnant conditions. This low flow of water through the Upper and Lower Sunset Lake, combined with the thick growth of trees and brush has created swamp like conditions in Upper Sunset Lake. Some of the Phase I sediment sample locations in Upper Sunset Lake and in Lower Sunset Lake were identified to contain Uranium (U) concentrations above the residential use screening level for soils (NUREG 1757, Vol. 2, Rev. 1, Appendix H), but below industrial use screening level. These samples were collected from locations on the WCFFF property. Assessment of this data was completed in the Final Interim Remedial Investigation Data Summary Report, approved by SCDHEC on July 30, 2020, and concluded that the identification of U concentrations in the sediment does not pose any undue risk to public health and safety, nor does it indicate potential off-site impact. However, additional sampling and investigation to further understand the extent of the potential impact into the Mill Creek Corridor was planned as described in the Phase II RI Work Plan, approved by SCDHEC on October 14, 2020 and in an addendum approved on November 5, 2020. 5
RI Phase II Assessment During Phase II of the RI, sampling was performed to further assess the vertical and horizontal extent of impact on sediment quality in several areas of the site; the Mill Creek Corridor surface water body, the Gator Pond, and the site stormwater ditches including the area known as the Middle Ditch. Westinghouse collected sediment samples from 17 of the original sediment sample locations in the Mill Creek Corridor (SED-19 through SED-22 and SED-38 through SED-50), while also sampling at greater depths than were performed in Phase I. The Phase II sediment sampling began on November 9, 2020 and was completed December 4, 2020. The soil and sediment sampling results for the Middle Ditch are discussed in the Site Drainage Middle Ditch Section (beginning on page 10 of this document), and the Gator Pond sediment sampling results for the Gator Pond are discussed in the Gator Pond Section (beginning on page 13 of this report). Based on the Phase II results, additional sampling was proposed by WCFFF and approved by SCDHEC on February 22, 2021. This follow up sediment sampling campaign was conducted in March of 2021 and is discussed in the Mill Creek Corridor Bounding Section (beginning on page 16 of this document). The locations of the RI Phase II sediment transects performed in November and December of 2020 are shown in Figure 3. Figure 3 - RI Phase II Sediment Transects 9.Tt~:e '.\';lt!-" Sonr; i! l<<-l:l:r l:,,s..:~SalTl::lcl.sX<Jtl(n
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RI Phase II sediment samples were collected from the previous Phase I locations at deeper intervals, and at new locations to bound previously identified areas of elevated residual radioactivity. Upstream Areas (Sediment Background) Sediment samples were collected at multiple locations to assess background sediment quality. These sediment samples were collected at locations that are upstream of the surface water flow from the site, where only naturally occurring radioactivity is expected to be present in the sediment. Locations SED-11 and SED-12 were each collected from a storm water ditch and are representative of the naturally occurring sediment within the storm water ditches as it enters the WCFFF site boundary. Locations SED-51, SED-52, and SED-53 were collected just upstream of the site Entrance Dike, locations SED-54, SED-55, and SED-56 were collected well upstream within the flow path of Mill Creek, and SED-57, SED-58, and SED-59 were collected upstream of the diversion canal. The three sediment transects (sediment locations 51-59) are representative of the naturally occurring background sediment within Mill Creek, of which Upper and Lower Sunset Lakes are a part. Upper and Lower Sunset Lakes Three sediment transects in Upper Sunset Lake, and two sediment transects in Lower Sunset Lake were sampled during Phase I of the RI. These transects were placed to identify potential environmental impacts from historic plant operations. During Phase II, vertical sediment profiling was performed at 17 of the Phase I sediment locations. Downstream Areas Three of the sediment sampling transects (Figure 2) are downstream of the Lower Sunset Lake dike. This portion of Mill Creek is heavily forested, lowland swamp with minimal flow. The majority of the flow in Mill Creek through the WCFFF property is by way of the diversion canal (Figures 1 and 3) along the southern property boundary. RI Phase II Evaluation All Phase II sediment samples were sent to an off-site laboratory for analysis of U, Technetium-99 (Tc-99), Ammonia, Fluoride, Nitrate, and Volatile Organic Compounds (VOCs). Reported chemical constituent results were below the EPA Regional Screening Levels for residential use, and therefore further comparisons to industrial screening levels of evaluation were not necessary. The RI Phase II sediment radiological results were evaluated in accordance with WCFFF site procedure RA-433, Environmental Remediation. The radiological screening levels provided in Table 3 in procedure RA-433 (Rev 2) are based on single contaminant concentrations for each isotope. When multiple radionuclides are present, a sum of fractions (SOF) approach is used to assess compliance with the concentration limit. The SOF for each unique sample is calculated using the following equation: 7
Concu-234 Concu-235 Concu-23s Concrc-99 SOF = + + + SSL , U-234 SSLu-23s
, SSL , U-238 SSLrc-99 The values in Table 1 represent soil concentrations of individual radionuclides, using conservative exposure parameters, that would be deemed in compliance with the dose limits for an individual as specified in 10 CFR 20.1402 (i.e., equivalent to 25 mrem/year under Residential Use).
Table 1: Residential and Industrial Use Screening Levels Residential Use Screening Industrial Use Screening Contaminant Basis of Screening Level Level Level NUREG 1757, Vol. 1-2 , Uranium - 234 13 pCi/g (0.002 mg/Kg) 3,310 pCi/g (0.5 mg/kg) Appendix H1 NUREG 1757, Vol. 1-2 , Uranium - 235 8 pCi/g (3.704 mg/Kg) 39 pCi/g (18 mg/kg) Appendix H1 NUREG 1757, Vol. 1-2 , Uranium - 238 14 pCi/g (41.667 mg/Kg) 179 pCi/g (533 mg/kg) Appendix H1 Calculated based on NUREG Total Uranium 12.69 pCi/g (5.320 mg/Kg) 2,933 pCi/g (1,230 mg/kg) 1757, Vol. 2, Rev. 1-2, Appendix H2 NUREG 1757 Vol. 1-2 , Technetium - 99 19 pCi/g (1.110 E -03 mg/Kg) 89,400 pCi/g (5.2 mg/Kg) Appendix H1 The Residential Use Screening Levels (RUSLs) were determined using highly conservative assumptions to develop an exposure scenario where it is assumed that a person would construct a house on the property, live on the property, drink the groundwater, and eat produce farmed on the property as well as fish caught on the property. At the time of facility decommissioning, site specific Exposure Pathway Modeling will be used to develop Derived Concentration Guidance Levels (DCGLs) for the WCFFF following NUREG-1575, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM). This guidance, commonly referred to as MARSSIM is a detailed instruction for planning, implementing, and evaluating environmental and facility radiological surveys conducted to demonstrate compliance with a dose- and risk-based regulation. The DCGL is a radionuclide specific concentration in pCi/g that is equal to the release criteria dose of 25 mRem/yr. While the Residential Screening Levels for soils are based on the most conservative assumptions, site specific DCGLs will generally be higher in most cases. For example, the recently decommissioned Westinghouse Hematite Site had the following site-specific DCGLs (Table 2) for unrestricted release using a Residential Farmer Scenario. 8
Table 2: Westinghouse Hematite Site-Specific DCGLs DCGL for Unrestricted Free Contaminant Basis of Screening Level Release to the Public Uranium - 234 195.4 pCi/g Hematite Decommissioning Plan (NRC License No SNM-33) Uranium - 235 51.6 pCi/g Hematite Decommissioning Plan (NRC License No SNM-33) Uranium - 238 168.8 pCi/g Hematite Decommissioning Plan (NRC License No SNM-33) Total Uranium 170.2 pCi/g Hematite Decommissioning Plan (NRC License No SNM-33) Technetium - 99 25.1 pCi/g Hematite Decommissioning Plan (NRC License No SNM-33) Because site-specific DCGLs will generally be higher, the RUSLs are provided in RA-433 for reference, and where practical, WCFFF will strive to achieve these values. However, it is most appropriate to compare samples collected from within the WCFFF property boundary to the Industrial Use Screening Levels (IUSLs) also listed in RA-433, because they are representative of the current and future use of the property, until such time as the WCFFF undergoes full site decommissioning. The IUSLs are also based on conservative assumptions, but these assumptions better represent the current and future use of the WCFFF, as it is assumed that the industrial worker will not live on the property, nor engage in the consumption of any food or water produced on the facility property. Sediment Sample Results The Phase II radiological results are the focus of this TBD, as the sediment sample analytical results from Phase I of the RI have been previously reported and discussed in the Final Interim Remedial Investigation Data Summary Report, approved by DHEC on July 30, 2020 (also known as the RI Phase I Report). The Phase II data has been submitted to SCDHEC through routine monthly reports required by the Consent Agreement. This evaluation will be incorporated into the Final Remedial Investigation report. The sediment data can be categorized by the area of the site from which it was collected. This includes a new background sediment transect collected upstream of the diversion canal; additional bounding sampling collected in a site drainage Middle Ditch; additional sediment characterization performed in the Gator Pond; and additional characterization performed in the Mill Creek Corridor of Upper and Lower Sunset Lake. Upstream Areas (Sediment Background) In Phase I of the RI, two background sediment transects were collected upstream of the site entrance dike. While these background sediment results appear to reflect the levels of naturally occurring radioactive materials that will be identified in all sediments, an additional background sediment transect (SED-57, SED-58, and SED-59) was collected further upstream of the site diversion canal. The result of this additional background sediment transect are presented in Table 3, along with the original Phase I Transect results for reference. 9
Table 3: Background Sediment Sampling Results Gross Analyte Activity (pCi/g) SOF SOF Sample ID U-234 U-235 U-238 Tc-99 Residential Industrial SED-51-0-6 (Phase I) 2.10 0.18 1.42 0.00 0.3 0.0 SED-51-6-12 (Phase I) 1.27 0.07 1.15 4.89 0.4 0.0 SED-52-0-6 (Phase I) 1.77 0.31 1.72 0.00 0.3 0.0 SED-52-6-12 (Phase I) 1.88 0.05 1.45 0.00 0.3 0.0 SED-53-0-6 (Phase I) 2.15 0.19 1.45 0.00 0.3 0.0 SED-53-6-12 (Phase I) 2.06 0.07 2.34 0.00 0.3 0.0 SED-54-0-6 (Phase I) 1.78 0.12 1.36 1.51 0.3 0.0 SED-54-6-12 (Phase I) 1.48 0.12 1.87 0.00 0.3 0.0 SED-55-0-6 (Phase I) 2.05 0.00 1.74 6.19 0.6 0.0 SED-55-6-12 (Phase I) 1.62 0.16 1.62 0.00 0.3 0.0 SED-56-0-6 (Phase I) 2.02 0.21 1.40 2.53 0.4 0.0 SED-56-6-12 (Phase I) 1.89 0.03 1.72 0.00 0.3 0.0 SED-57P2-0-6 (Phase II) 2.22 0.11 1.82 NA 0.3 0.0 SED-57P2-6-12 (Phase II) 1.63 0.10 1.74 NA 0.3 0.0 SED-57P2-12-18 (Phase II) 1.49 0.00 2.05 NA 0.3 0.0 SED-58P2-0-6 (Phase II) 1.21 0.05 1.37 NA 0.2 0.0 SED-58P2-6-12 (Phase II) 1.38 0.03 1.15 NA 0.2 0.0 SED-59P2-0-6 (Phase II) 2.09 0.05 1.88 NA 0.3 0.0 SED-59P2-6-12 (Phase II) 1.52 0.05 1.27 NA 0.2 0.0 As can be seen from the data in Table 3 above, the results of the new background sediment transect are consistent with the results of the two background sediment transects collected during Phase I of the RI. All Phase I Tc-99 reported results in Table 3 above were less than the instruments Minimum Detectable Activity (MDA), meaning that the results could not reliably be distinguished from the laboratory instruments background value. Therefore, no additional Tc-99 sampling was performed in Phase II. Site Drainage Middle Ditch In Phase I of the RI, location SED-16 in an on-site drainage ditch was identified to be elevated, but similar results were not identified further upstream or downstream of this location. To determine the size and extent of the elevated concentrations at location SED-16, additional bounding sampling was performed during Phase II. Location SED-60 was collected approximately 50 ft upstream and SED-61 was collected approximately 50 ft downstream of the original SED-16 location. In 2021, an additional routine soil sample location was added to the environmental monitoring program. The sample location, LOC-5, was found to be elevated, and is approximately 500 ft upstream of SED-16. LOC-5 was sampled twice since the RI Phase II sampling was conducted. LOC-5 is considered a surface soil sample location, as opposed to a sediment sample 10
location, because the area it is collected from is not covered by water for a majority of the year; however it is appropriate to include this sample location given that it was collected from the same on-site drainage middle ditch, and is in close proximity to the adjacent sediment sample locations. The locations of the routine soil and vegetation samples, along with the LOC-5 sample location, are shown in Figure 4. Figure 4 - LOC-5 Sample Location
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The results of this additional sediment and soil sampling are presented in Table 4. 11
Table 4: Middle Ditch Sediment Sampling Results Gross Analyte Activity (pCi/g) SOF SOF % Sample ID U-234 U-235 U-238 Tc-99 Residential Industrial Moist. SED-16P2-0-6 67.2 3.31 12.1 0.614 6.5 0.2 25.8 SED-16P2-6-12 63.7 3.18 11.8 2.62 6.3 0.2 23.3 SED-16P2-12-24 6.03 0.48 1.99 3.71 0.9 0.0 18.4 SED-60P2-0-6 39.7 2.19 7.42 0.433 3.9 0.1 18.4 SED-60P2-6-12 44.4 1.81 8.17 0.483 4.3 0.1 18.4 SED-61P2-0-6 4.29 0.244 0.818 1.2 0.5 0.0 16.2 SED-61P2-6-12 9.17 0.267 2.79 7.96 1.4 0.0 13.6 SED-61P2-12-18 3.86 0.186 1.95 8.28 0.9 0.0 11 LOC5-SOIL-20210526 113.0 5.16 21.5 0.00 10.9 0.3 20.4 LOC5-SOIL-20210929 40.40 2.59 9.15 0.00 4.1 0.1 15.5 Average 39.18 1.94 7.77 2.53 3.9 0.1 NA As can be seen from the data in Table 4 above, the results of the bounding sampling show that the elevated concentrations identified in location SED-16 are confined to the top 12 inches of soil and sediment. The confinement to the top 12 inches is consistent with a surface release and is believed to be the source of surficial contamination in this area (1971 West Lagoon Rupture). While the top 12 inches in SED-60, and SED-61 remain elevated, concentrations are diminishing relative to SED-16. The surface soil results at LOC-5 also show elevated residual contamination, which given the location of the sample point between the current West I and West II Lagoons, further supports the conclusion that the 1971 West Lagoon rupture is the likely source of contamination. When compared to the RI Phase I sampling, this shows that the area of impact at location SED-16 is limited. RI Phase I sample locations SED-15 up stream, and SED-17 down stream did not exceed the RUSL provided in Table 1. Using these as bounding locations, the area of elevated surface sediment and soil concentrations is conservatively estimated to be approximately 1,250 ft long by 100 ft wide. These dimensions result in an area of approximately 125,000 ft2 (11,600 m2). Furthermore, this location remains in an industrial use area of the site which is not typically occupied; the area is only accessed intermittently throughout the year for brush clearing, and sampling activities. These concentrations do not represent any undue risk to the health and safety of the workforce or the public, and do not indicate potential off-site impact. Given the distance from the site boundary, there is little concern for migration, or offsite impact. However, a dose and risk assessment was still performed for this area of elevated surface sediment and soil, as described in the Dose and Risk section of this report. This area will continue to be monitored, and potential remediation options will be evaluated during the Feasibility Study (FS) and approved by SCDHEC in the Record of Decision (ROD) as required by the Consent Agreement. Until remediation is performed, funding to clean-up the impact was incorporated in the Decommissioning Funding Plan (DFP) required by Nuclear Regulatory 12
Commission (NRC) regulations and the sites NRC license. The most recent triennial DFP update was submitted May of 2022, and the projected decommissioning costs for this area were incorporated. Gator Pond In Phase I of the RI, surficial sediment samples identified the presence of Tc-99 in Gator Pond. To assess the vertical and horizontal extent of potential impact in Phase II of the RI, the original two locations, along with four new locations were sampled. The results of this additional sediment sampling are presented in Table 5. Table 5: Gator Pond Sediment Sampling Results Gross Analyte Activity (pCi/g) SOF SOF % Sample ID U-234 U-235 U-238 Tc-99 Residential Industrial Moist. SED-23P2-0-6 1.36 0.0994 1.36 144 7.8 0.0 66.5 SED-23P2-6-12 1.19 0.0658 1.29 30.6 1.8 0.0 46.9 SED-23P2-12-24 1.06 0.0187 1.19 1.4 0.2 0.0 24.5 SED-23P2-24-36 1.11 0.0379 0.736 0.785 0.2 0.0 23.5 SED-24P2-0-6 3.12 0.16 2.13 118 6.6 0.0 80.4 SED-24P2-6-12 2.63 0.153 1.67 158 8.7 0.0 92 SED-24P2-12-18 1.57 0.217 1.47 33.3 2.0 0.0 75.9 SED-62P2-0-6 1.21 0.167 1.73 22.9 1.4 0.0 33.2 SED-62P2-6-12 1.57 0.0659 2 2.89 0.4 0.0 22.9 SED-62P2-12-24 1.84 0 1.12 1.08 0.3 0.0 23.6 SED-63P2-0-6 0.853 0.148 0.875 25 1.5 0.0 22.8 SED-63P2-6-12 0.76 0.0985 0.649 2.63 0.3 0.0 27.5 SED-64P2-0-6 1.3 0.0856 1.18 85.8 4.7 0.0 22.1 SED-64P2-6-12 1.11 0.0301 1.32 5.53 0.5 0.0 32.2 SED-65P2-0-6 1.01 0.113 0.726 312 16.6 0.0 22.4 SED-65P2-6-12 1.12 0 0.791 8.41 0.6 0.0 31.9 As can be seen from the data in Table 5 above, the results of the Gator Pond sediment sampling show elevated concentrations of Tc-99 across the Gator Pond in the top 6 inches of sediment. To a lesser extent, residual amounts of Tc-99 were identified at greater depths extending down to approximately 18 inches below the ground surface. Gator Pond is the only area of the site where Tc-99 is present in sediments above residential levels. The Gator Pond is a flow through pond with groundwater discharging to the pond in the northeastern portion of the pond and surface water recharging groundwater in the east, west, northwestern, and bottom of the pond. Sediment impact in the Gator Pond is the result of groundwater impacted with Tc-99 discharging to the Gator Pond and the Tc-99 subsequently settling in the bottom of the Gator Pond sediments. 13
Gator Pond represents an industrial use area of the site and is not a source of drinking water; therefore, these concentrations do not represent any undue risk to the health and safety of the workforce or the public, and do not indicate a potential for off-site impact. This area will continue to be monitored, and potential remediation options will be evaluated during the FS and approved by SCDHEC in the ROD as required by the Consent Agreement. Until remediation is performed, funding to clean-up the impact was incorporated in the Decommissioning Funding Plan (DFP) required by NRC regulations and the sites NRC license. The most recent triennial DFP update was submitted May of 2022. Mill Creek Corridor During Phase I of the RI, 17 sediment sample locations within Upper and Lower Sunset Lake were identified to contain elevated concentrations of U in sediments. To further assess the vertical and horizontal extent of the potential impact, additional sampling was performed at these locations in Phase II, extending to greater depths. The results of this additional sediment sampling are presented in Table 6. Table 6: Mill Creek Sediment Sampling Results Gross Analyte Activity (pCi/g) SOF SOF % Sample ID U-234 U-235 U-238 Tc-99 Residential Industrial Moist. SED-19P2-0-6 19.1 1.02 5.15 0.208 2.0 0.1 87.8 SED-19P2-6-12 27 1.22 6.42 1.12 2.7 0.1 87.6 SED-19P2-12-18 2.05 0.0675 1.51 0 0.3 0.0 68.6 SED-20P2-0-6 1.72 0.0212 1.67 0.638 0.3 0.0 39.1 SED-20P2-6-12 2.13 0.094 1.5 0.265 0.3 0.0 36.2 SED-20P2-12-24 1.43 0.145 1.89 0.208 0.3 0.0 32.4 SED-20P2-24-36 1.49 0.0841 1.4 0.7 0.3 0.0 32.5 SED-21P2-0-6 13.2 0.393 3.79 1.17 1.4 0.0 77.5 SED-21P2-6-12 2.19 0.131 1.51 0.528 0.3 0.0 72.7 SED-21P2-12-24 1.56 0.0344 1.07 0.225 0.2 0.0 45.8 SED-21P2-24-36 1.75 0 0.97 0.0586 0.2 0.0 52.5 SED-22P2-0-6 6.21 0.257 2.24 0.304 0.7 0.0 61.1 SED-22P2-6-12 1.97 0.192 0.971 0.0333 0.2 0.0 53 SED-22P2-12-24 1.09 0.035 0.838 0 0.1 0.0 36.5 SED-22P2-24-36 1.81 0.225 1.08 0 0.2 0.0 25.8 SED-38P2-0-6 60.9 3.12 17 2.13 6.4 0.2 74.5 SED-38P2-6-12 4.19 0.276 2.52 0.116 0.5 0.0 67.2 SED-38P2-12-24 3.01 0.188 1.71 0.174 0.4 0.0 76 SED-38P2-24-36 1.74 0.0835 1.6 0.128 0.3 0.0 44.3 SED-39P2-0-6 2.22 0.0959 1.81 0.626 0.3 0.0 45.1 SED-39P2-6-12 2.37 0.0929 1.85 0.732 0.4 0.0 43.7 14
Table 6: Mill Creek Sediment Sampling Results (continued) Gross Analyte Activity (pCi/g) SOF SOF % Sample ID U-234 U-235 U-238 Tc-99 Residential Industrial Moist. SED-39P2-12-24 1.58 0.243 1.63 0.536 0.3 0.0 43.3 SED-39P2-24-36 1.86 0.181 1.96 0.281 0.3 0.0 33.1 SED-40P2-0-6 4.69 0.362 2.29 0.4 0.6 0.0 32.2 SED-40P2-6-12 1.34 0.0449 1.43 0.199 0.2 0.0 72.3 SED-40P2-12-24 1.17 0 1.09 0.085 0.2 0.0 34.8 SED-40P2-24-36 1.36 0.0645 1.23 0.137 0.2 0.0 32 SED-41P2-0-6 17 0.789 3.38 1.12 1.7 0.0 24.7 SED-41P2-6-12 1.84 0.0733 1.29 0.038 0.2 0.0 85.8 SED-41P2-12-24 2.14 0 1.87 0.216 0.3 0.0 67.6 SED-41P2-24-36 0.806 0.06 0.925 0.185 0.1 0.0 78.7 SED-42P2-0-6 31.1 1.18 7.57 1.21 3.1 0.1 92 SED-42P2-6-12 4.34 0.248 1.68 0.137 0.5 0.0 84.3 SED-42P2-12-24 3.19 0.135 1.5 0.0327 0.4 0.0 70.5 SED-42P2-24-36 1.57 0.0342 1.58 0 0.2 0.0 71.3 SED-43P2-0-6 5.13 0.211 1.87 0.226 0.6 0.0 71.4 SED-43P2-6-12 16 0.873 4.5 0.00633 1.7 0.1 80.3 SED-44P2-0-6 435 24.3 98.7 9.42 44.0 1.3 88.9 SED-44P2-6-12 34 1.57 8.74 4.33 3.7 0.1 84.9 SED-44P2-12-18 3.34 0.0293 2.7 0 0.5 0.0 73.3 SED-45P2-0-6 6 0.325 1.92 0 0.6 0.0 87.3 SED-45P2-6-12 2.95 0.0545 1.48 0 0.3 0.0 75.7 SED-46P2-0-6 11.6 0.251 2.85 0 1.1 0.0 89.4 SED-46P2-6-12 10.4 0.419 3.55 0.11 1.1 0.0 83.8 SED-47P2-0-6 3.32 0.0528 1.95 0 0.4 0.0 76 SED-47P2-6-12 4.86 0.0999 2.41 0 0.6 0.0 89.4 SED-48P2-0-6 2.49 0.154 2.24 0 0.4 0.0 70.3 SED-48P2-6-12 2.11 0.169 1.77 0 0.3 0.0 36.8 SED-48P2-12-18 1.63 0.205 1.85 0 0.3 0.0 33.8 SED-49P2-0-6 5.1 0.142 2.25 0 0.6 0.0 77.7 SED-49P2-6-12 2.85 0.0436 2.04 0 0.4 0.0 70.4 SED-50P2-0-6 6.83 0.351 2.65 0 0.8 0.0 83.9 SED-50P2-6-12 2.33 0.152 1.83 0 0.3 0.0 66 SED-50P2-12-24 1 0.139 0.808 0 0.2 0.0 59.4 15
The majority of the Phase II RI sediment results are consistent with the results collected from Phase I, showing only residual levels of U contamination in the surficial layer of sediment of Mill Creek. However, there is one significant sediment result that stands out. Location SED-44 (0-6) was significantly more elevated than any of the surrounding sediment locations collected during either the Phase I or Phase II sampling. This prompted an additional sampling campaign to further bound the extent of potential impact in this area. Mill Creek Corridor Bounding Sampling During the RI Phase II bounding efforts, a sampling plan was developed and submitted to SCDHEC for review and approval. This plan established two bounding boxes placed around the location of SED-44. One box (with 4 corner points) was approximately 10 m2 in area, and the other was approximately 100 m2 in area. An additional sediment transect was also placed between the location of SED-44 and the Upper Sunset Lake dike which is the impounding barrier downstream. Samples SED-66, SED-67, and SED-68 were collected from this transect to determine if additional depositional areas could be identified further downstream of SED-44. The approximate locations of these bounding samples are shown in Figure 5. Figure 5 - SED-44 Bounding Sample Locations tJ.
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Sediment SampUng March 2021 Fleld Use wHl1111>JIWSft~,u&.f~ION;ir11tul'T MO,,II H;.~~TNC1;,l,OOH 1 The original SED-44 results are presented alongside the bounding sample results in Table 7. Locations SED-B1, SED-B2, SED-B3, and SED-B4 represent the corner points of the 10 m2 16
bounding area, and SED-B5, SED-B6, SED-B7, and SED-B8 represent the corner points of the 100 m2 bounding area. SED-66, SED-67, and SED-68 make up the new sediment transect that was placed approximately 25 ft upstream of the Upper Sunset Lake dike. Table 7: SED-44 Bounding Sediment Sampling Results Gross Analyte Activity (pCi/g) SOF SOF % Sample ID U-234 U-235 U-238 Tc-99 Residential Industrial Moist. SED-44P2-0-6 435.0 24.3 98.7 9.4 44.0 1.3 88.9 SED-44P2-6-12 34.0 1.6 8.7 4.3 3.7 0.1 84.9 SED-44P2-12-18 3.3 0.0 2.7 0.0 0.5 0.0 73.3 SED-B1-0-6 401.0 26.9 95.7 23.7 42.3 1.3 83.6 SED-B1-6-12 3.2 0.3 2.0 0.3 0.4 0.0 72.3 SED-B2-0-6 267.0 15.8 60.3 19.1 27.8 0.8 89.1 SED-B2-6-12 5.5 0.4 2.3 0.7 0.7 0.0 77.1 SED-B3-0-6 47.2 2.6 13.1 4.4 5.1 0.2 82.9 SED-B3-6-12 90.6 4.8 22.1 5.3 9.4 0.3 85.3 SED-B4-0-6 33.6 2.3 7.8 1.1 3.5 0.1 94.2 SED-B4-6-12 10.4 0.4 3.5 0.4 1.1 0.0 73.5 SED-B5-0-6 30.0 1.4 7.3 0.6 3.0 0.1 94.6 SED-B5-6-12 4.4 0.2 2.3 1.4 0.6 0.0 72.9 SED-B6-0-6 30.4 1.8 6.9 1.1 3.1 0.1 92.2 SED-B6-6-12 8.0 0.4 2.9 1.4 0.9 0.0 73 SED-B7-0-6 24.7 1.1 6.3 3.7 2.7 0.1 78 SED-B7-6-12 5.5 0.3 3.2 0.5 0.7 0.0 77.6 SED-B8-0-6 5.5 0.3 3.2 0.9 0.7 0.0 98 SED-B8-6-12 37.6 1.9 8.7 1.4 3.8 0.1 90.5 SED-66-0-6 14.5 0.6 4.2 2.2 1.6 0.0 63.3 SED-66-6-12 4.8 0.3 2.5 0.8 0.6 0.0 49 SED-66-12-24 1.5 0.2 1.2 0.2 0.2 0.0 51.7 SED-67-0-6 14.8 0.7 4.4 1.8 1.6 0.0 86.5 SED-67-6-12 2.8 0.1 1.4 0.6 0.4 0.0 70.4 SED-67-12-24 2.6 0.1 1.4 0.5 0.3 0.0 71.8 SED-68-0-6 1.0 0.0 1.5 0.1 0.2 0.0 28 SED-68-6-12 1.3 0.1 1.1 0.0 0.2 0.0 26.3 SED-68-12-24 0.1 1.2 0.0 0.6 0.2 0.0 26.8 As can be seen from the results above, locations SED-B1 and SED-B2 still have elevated U concentrations in the surficial layer indicating that the area of the interest around SED-44 may be slightly greater than 10m2. However, the results from all the surrounding sample areas are consistent with the levels seen throughout Upper and Lower Sunset Lake and indicate that while 17
the area may be slightly greater than 10 m2, it is less than 100 m2 and appears to be isolated to this small area in Upper Sunset Lake. The elevated concentrations also appear to be limited to the surficial layer, and do not extend deeper into the sediment. Lastly it can be noted above that the sample media itself was very high in percent moisture because these samples were mostly collected from areas under standing water. However, the analytical laboratory results are reported dried. When evaluating radiological samples, the water (moisture content) in the sample is an efficient shield to radioactivity, reducing the amount of radioactivity transmitted into the environment. The water also adds weight to the overall sample mass. If the water content of a sediment sample is removed through heating and drying the sample, then the sample results are not necessarily reflective of the actual sediment that exists in the environment, which is covered by and saturated with water. Therefore, it is appropriate to interpret the results moving forward in two ways, Dry (as reported by the laboratory), and Wet (accounting for moisture in the sample). It is also appropriate to focus on the surficial sediment layer, since the underlying sediment concentrations are much lower, and the surficial layer provides a bounding case. Next an area average calculation was performed on the 10 m2 and 100 m2 bounding areas. Utilizing the laboratory reported results (dry), a straight average was performed on the 10m2 bounding area, giving equal weighting to each sample. The 10 m2 area average results are presented in Table 8. A weighted average was applied to the 100 m2 area, assigning a 10% area weight to the 10 m2 average, and even weighting to the remaining 4 corner points. The 100m2 area average results are presented in Table 9. The 10 m2 area average calculation was repeated utilizing moisture corrected activity (wet), which better represents the as found condition of the sediment, since it exists in extremely wet conditions nearly all year round. These results are reported in Table 10. The moisture corrected results were also used to calculate a weighted average for the 100 m2 bounding area. These results are reported in Table 11. 18
Table 8: SED-44 10 m2 Bounding Area Average (Dry) 10 m2 Bounding area, 0-6 inch layer, dried sample activity Gross Analyte Activity (pCi/g) Calculated SOF SOF % of Gross Analyte Activity (pCi/g) SOF SOF Sample ID Enrichment U-234 U-235 U-238 Tc-99 (%) Resid. Indust. area U-234 U-235 U-238 Tc-99 Resid. Indust. SED-44P2-0-6 435.0 24.3 98.7 9.4 3.7 44.0 1.3 20% 87.0 4.9 19.7 1.9 8.8 0.3 SED-B1-0-6 401.0 26.9 95.7 23.7 4.2 42.3 1.3 20% 80.2 5.4 19.1 4.7 8.5 0.3 SED-B2-0-6 267.0 15.8 60.3 19.1 4.0 27.8 0.8 20% 53.4 3.2 12.1 3.8 5.6 0.2 SED-B3-0-6 47.2 2.6 13.1 4.4 3.0 5.1 0.2 20% 9.4 0.5 2.6 0.9 1.0 0.0 SED-B4-0-6 33.6 2.3 7.8 1.1 4.4 3.5 0.1 20% 6.7 0.5 1.6 0.2 0.7 0.0 Area Average 236.8 14.4 55.1 11.5 24.6 0.7 Table 9: SED-44 100 m2 Bounding Area Average (Dry) 100 m2 Bounding area, 0-6 inch layer, dried sample activity Gross Analyte Activity (pCi/g) Calculated SOF SOF % of Gross Analyte Activity (pCi/g) SOF SOF Sample ID Enrichment U-234 U-235 U-238 Tc-99 (%) Resid. Indust. area U-234 U-235 U-238 Tc-99 Resid. Indust. 10M2-0-6-WA 236.8 14.4 55.1 11.5 N/A 24.6 0.7 10% 23.7 1.4 5.5 1.2 2.5 0.1 SED-B5-0-6 30.0 1.4 7.3 0.6 2.9 3.0 0.1 23% 6.8 0.3 1.6 0.1 0.7 0.0 SED-B6-0-6 30.4 1.8 6.9 1.1 4.0 3.1 0.1 23% 6.8 0.4 1.6 0.3 0.7 0.0 SED-B7-0-6 24.7 1.1 6.3 3.7 2.8 2.7 0.1 23% 5.6 0.3 1.4 0.8 0.6 0.0 SED-B8-0-6 5.5 0.3 3.2 0.9 1.4 0.7 0.0 23% 1.2 0.1 0.7 0.2 0.2 0.0 Weighted Average 44.1 2.5 10.8 2.6 4.6 0.1 19
Table 10: SED-44 10 m2 Bounding Area Average (Wet) 10 m2 Bounding area, 0-6 inch layer, wet sample activity (moisture corrected) Gross Analyte Activity (pCi/g) Calculated SOF SOF % of Gross Analyte Activity (pCi/g) SOF SOF Sample ID Enrichment U-234 U-235 U-238 Tc-99 (%) Resid. Indust. area U-234 U-235 U-238 Tc-99 Resid. Indust. SED-44P2-0-6 48.3 2.7 11.0 9.4 3.7 5.3 0.1 20% 9.7 0.5 2.2 1.9 1.1 0.0 SED-B1-0-6 65.8 4.4 15.7 23.7 4.2 8.0 0.2 20% 13.2 0.9 3.1 4.7 1.6 0.0 SED-B2-0-6 29.1 1.7 6.6 19.1 4.0 3.9 0.1 20% 5.8 0.3 1.3 3.8 0.8 0.0 SED-B3-0-6 8.1 0.4 2.2 4.4 3.0 1.1 0.0 20% 1.6 0.1 0.4 0.9 0.2 0.0 SED-B4-0-6 1.9 0.1 0.5 1.1 4.4 0.3 0.0 20% 0.4 0.0 0.1 0.2 0.1 0.0 Area Average 30.6 1.9 7.2 11.5 3.7 0.1 Table 11: SED-44 100 m2 Bounding Area Average (Wet) 100 m2 Bounding area, 0-6 inch layer, wet sample activity (moisture corrected) Gross Analyte Activity (pCi/g) Calculated SOF SOF % of Gross Analyte Activity (pCi/g) SOF SOF Sample ID Enrichment U-234 U-235 U-238 Tc-99 (%) Resid. Indust. area U-234 U-235 U-238 Tc-99 Resid. Indust. 10M2-0-6-WA 30.6 1.9 7.2 11.5 N/A 3.7 0.1 10% 3.1 0.2 0.7 1.2 0.4 0.0 SED-B5-0-6 1.6 0.1 0.4 0.6 2.9 0.2 0.0 23% 0.4 0.0 0.1 0.1 0.0 0.0 SED-B6-0-6 2.4 0.1 0.5 1.1 4.0 0.3 0.0 23% 0.5 0.0 0.1 0.2 0.1 0.0 SED-B7-0-6 5.4 0.2 1.4 3.7 2.8 0.7 0.0 23% 1.2 0.1 0.3 0.8 0.2 0.0 SED-B8-0-6 0.1 0.0 0.1 0.9 1.4 0.1 0.0 23% 0.0 0.0 0.0 0.2 0.0 0.0 Weighted Average 5.2 0.3 1.3 2.6 0.7 0.0 20
Dose and Risk Assessment A dose and risk assessment was performed based on the sample results from SED-44 and LOC-5 to evaluate any potential risks to the work force and public health and safety. The average concentrations reported in Table 4 and Tables 8 through 11 above were used to develop a dose and risk assessment of the elevated areas of Sunset Lake (SED-44) and the Middle Ditch (LOC-5). RESRAD-ONSITE Version 7.2 was used to calculate potential dose and risk to the evaluated receptor (residential farmer or industrial worker, as appropriate). RESRAD-ONSITE (formerly RESRAD) is a computer model developed by the Argonne National Laboratory (ANL) for the U.S. Department of Energy (DOE). RESRAD-ONSITE calculates site-specific risk and dose to various future hypothetical on-site receptors at sites with residual radioactive materials. The use of the RESRAD family of codes for modeling risk and dose has become an acceptable regulatory standard. RESRAD-ONSITE Version 7.2 incorporates recently (2014) updated dose conversion and morbidity slope factors calculated by Oak Ridge National Laboratory (ORNL). These updated factors are presented in the ORNL document entitled Calculation of Slope Factors and Dose Coefficients (ORNL 2014) and are included in the DCFPAK 3.02 library of the RESRAD-ONSITE Version 7.2 model. The derivations of these factors are based on updated decay chain and nuclide energy data presented in International Commission on Radiological Protection Publication (ICRP)-107, Nuclear Decay Data for Dosimetric Calculations (ICRP 2008). Middle Ditch Using the default Residential Farmer scenario, and the Industrial Worker scenario in RESRAD-ONSITE, 4 separate dose and risk models were created using both maximum soil concentrations (LOC worst case scenario) and average soil concentrations results (better representative of site conditions):
- Middle Ditch (Residential - Max Soil Concentrations)
- Middle Ditch (Residential - Average Soil Concentrations)
- Middle Ditch (Industrial - Max Soil Concentrations)
- Middle Ditch (Industrial - Average Soil Concentrations)
Each Dose and Risk assessment was evaluated for a period of 100 years. The Industrial - Average soil concentrations are considered most reflective of the current site conditions. The Residential conditions and the maximum soil concentrations are only reported as a worst case scenario. These conditions would assume that a resident farmer would be allowed to establish a homestead in the area, without any remediation or control placed on the property (not a realistic future use scenario). Average and maximum soils concentrations were taken from Table 4. RESRAD-ONSITE parameters that differ from the default Residential Farmer or Industrial Worker settings are shown in Table 12 below. 21
Table 12: RESRAD-ONSITE Dose and Risk Parameters Max Soil Average Soil Area Parameter Concentrations Concentrations U-234 (pCi/g) 113.0 39.18 U-235 (pCi/g) 5.16 1.94 U-238 (pCi/g) 21.50 7.77 Tc-99 (pCi/g) 0.00 2.53 Middle Ditch Area (m2) 11,600 11,600 Thickness (m) 0.3 0.3 Length parallel to aquifer (m) 107.7 107.7 Using the parameters listed in Table 12, four separate dose evaluations, and four separate risk reports were generated. These eight individual dose and risk reports combined represent over 200 pages of information and are available for review upon request. For the purposes of this discussion, the maximum dose and risk reported over the 100 year period for each scenario is summarized in Table 13 below. Table 13: Middle Ditch Dose & Risk Summary Max Soil Concentrations Average Soil Concentrations Max. Dose Max. Max. Dose Max. Evaluated Receptor (mRem/yr) Risk (mRem/yr) Risk Resident Farmer 16.45 1.8E-4 5.77 6.4E-5 Industrial Worker 1.57 2.2E-5 0.57 8.2E-6 The Middle Ditch is on WCFFF property and is not publicly accessible. It is within a controlled Industrial area that is fenced, monitored, and patrolled by site security. Site personnel also monitor the area and perform environmental sampling. However, should a member of the public intentionally or inadvertently access the area, even under the potential worst-case scenario (max soil concentration), there is no risk of excessive exposure, as the calculated maximum exposure is below the threshold of 25 mRem/yr for unrestricted release. The Industrial Worker Scenario using average soil concentrations is a more realistic dose and risk model. The Industrial Worker Scenario shows that the anticipated dose to the CFFF work force is de minimums, and that the risk is well within acceptable ranges. Therefore, no immediate action is required based on this assessment, and evaluation of remedial alternatives will be performed in the FS. Until remediation is performed, funding to clean-up the impact was incorporated in the Decommissioning Funding Plan (DFP) required by NRC regulations and the sites NRC license. The most recent triennial DFP update was submitted May of 2022, and the projected decommissioning costs for this area were incorporated. 22
Mill Creek Using the default Residential Farmer scenario in RESRAD-ONSITE, 8 separate dose and risk models were created using both dry (laboratory reported) and wet (moisture corrected) results:
- SED-44 Area of Interest (dry)
- SED-44 Area of Interest (wet)
- SED-44 10m2 average (dry)
- SED-44 10m2 average (wet)
- SED-44 100m2 average (dry)
- SED-44 100m2 average (wet)
- Mill Creek (dry)
- Mill Creek (wet)
Each Dose and Risk assessment was evaluated for a period of 100 years. The wet conditions are considered most reflective of the current site conditions. Mill Creek, and subsequently Upper and Lower Sunset Lake remain saturated throughout the year. Therefore, the modeled scenario for wet conditions uses the moisture corrected sample activity, which assumes that the sediment is saturated, and has at least 12 inches (0.3 m) of water cover. The actual measured depth of water at the time of sampling in this area measured between 13.5 and 44 inches. The Dry conditions are only reported as a worst case scenario in the extremely unlikely event that Mill Creek would run dry, or the area would experience an extreme and unforeseen drought. Therefore, the modeled scenario for dry conditions uses the laboratory dried sample activity and assumes no water cover. RESRAD-ONSITE parameters that differ from the default Residential Farmer settings are shown in Table 14. 23
Table 14: RESRAD-ONSITE Dose and Risk Parameters Area Parameter Wet Conditions Dry Conditions U-234 (pCi/g) 48.3 435 U-235 (pCi/g) 2.7 24.3 U-238 (pCi/g) 11 55.1 Tc-99 (pCi/g) 9.4 9.4 SED-44 Area of Interest Area (m2) 10 10 Thickness (m) 0.15 0.15 Length parallel to aquifer (m) 1 1 Cover thickness (m) 0.3 0 Cover Density (g/cc) 1 N/A U-234 (pCi/g) 30.6 236.8 U-235 (pCi/g) 1.9 14.4 U-238 (pCi/g) 7.2 55.1 Tc-99 (pCi/g) 11.5 11.5 SED-44 10 m2 Ave Area (m2) 10 10 Thickness (m) 0.15 0.15 Length parallel to aquifer (m) 1 1 Cover thickness (m) 0.3 0 Cover Density (g/cc) 1 N/A U-234 (pCi/g) 5.2 44.1 U-235 (pCi/g) 0.3 2.5 U-238 (pCi/g) 1.3 10.8 Tc-99 (pCi/g) 2.6 2.6 SED-44 100 m2 Ave Area (m2) 100 100 Thickness (m) 0.15 0.15 Length parallel to aquifer (m) 10 10 Cover thickness (m) 0.3 0 Cover Density (g/cc) 1 N/A U-234 (pCi/g) 4.5 37.2 U-235 (pCi/g) 0.2 1.9 U-238 (pCi/g) 1.1 9.4 Tc-99 (pCi/g) 1 1 Mill Creek Area (m2) 14500 14500 Thickness (m) 0.15 0.15 Length parallel to aquifer (m) 381 381 Cover thickness (m) 0.3 0 Cover Density (g/cc) 1 N/A 24
Using the parameters listed in Table 14, eight separate dose evaluations, and eight separate risk reports were generated. These sixteen individual dose and risk reports combined represent over 400 pages of information and are available for review upon request. The maximum dose and risk reported over the 100 year period for each scenario is summarized in Table 15. Table 15: Mill Creek Dose & Risk Summary Wet Conditions Dry Conditions Max. Dose Max. Max. Dose Max. Area (mRem/yr) Risk (mRem/yr) Risk SED-44 Area of 1.843 1.44E-05 17.13 1.88E-04 Interest SED-44 10 m2 Ave 1.18 9.24E-06 10.5 1.23E-04 SED-44 100 m2 Ave 0.39 3.69E-06 2.567 3.47E-05 Mill Creek 0.421 4.56E-06 3.111 4.59E-05 The SED-44 Area of Interest is on WCFFF property and is not publicly accessible. It is within a controlled area that is monitored and patrolled by site security. Site personnel also monitor the area and perform environmental sampling. However, should a member of the public intentionally or inadvertently access the area, even under the potential worst case scenario, there is no risk of excessive exposure, as the calculated maximum exposure is below the threshold of 25 mRem/yr for unrestricted release. Rather than making assumptions about the quantity of radioactive material present in the area, the dose and risk assessment summarized in Table 15 shows that, even under the potential worst case scenario, projected doses to a member of the public would not exceed regulatory criteria or require any type of posting or access restriction. No immediate action is required based on this assessment, and evaluation of remedial alternatives will be performed in the FS. Until remediation is performed, funding to clean-up the impact was incorporated in the Decommissioning Funding Plan (DFP) required by NRC regulations and the sites NRC license. The most recent triennial DFP update was submitted May of 2022. Conclusions Evaluation of the elevated soil and sediment results identified on WCFFF property could lead to three possible conclusions. First, the results could indicate an immediate need to take remedial action based on the determined level of risk. Second, the results could indicate that further evaluation is warranted in the FS that will be performed as part of the Consent Agreement, and third, the results could indicate that no action is necessary. Based on this evaluation of the Phase II RI sediment sampling results, the follow up bounding sampling results, and the dose modeling/associated risk estimates, no immediate action is 25
necessary. The results of these comprehensive sampling campaigns have defined the limited horizontal and vertical extent of soil and sediment impact. There are no current or future concerns for contaminants to potentially move offsite, and the documented impacts pose no potentially significant threat to plant workers, the general public or the environment. Continued environmental monitoring per the sites NRC license and WCFFFs procedure RA-434, Environmental Data Management, will be performed, and further evaluation in the areas of the Middle Ditch, Gator Pond and the Mill Creek Corridor will be included in the Final RI report and in the FS required by the Consent Agreement. In the interim, projected future decommissioning costs for these areas were incorporated into the triennial DFP update, which was submitted in May 2022, to ensure that the costs associated with future remedial efforts are appropriately captured. References NRC 2006. Consolidated Decommissioning Guidance: Decommissioning Process for Materials Licensees, NUREG-1757, Vol. 1, Rev. 2. NRC 2006. Consolidated Decommissioning Guidance: Characterization, Survey, and Determination of Radiological Criteria, NUREG-1757, Vol. 2, Rev. 1. ANL 1993. Argonne National Laboratory, Environmental Assessment and Information Sciences Division. Data Collection Handbook to Support Modeling Impacts of Radioactive Material in Soil. April 1993. NRC 1992. Residual Radioactive Contamination from Decommissioning: Technical Basis for Translating Contamination Levels to Annual Total Effective Dose Equivalent, Volume 1. NUREG/CR-5512. PNL-7994. October 1992. ORNL 2014. Oak Ridge National Laboratory. Oak Ridge, Tennessee. Calculation of Slope Factors and Dose Coefficients. ORNL/TM-2013/00. September 2014. RA-433, Rev 2 - WCFFF Environmental Remediation Procedure, dated April 28, 2022. RA-434, Rev 1 - WCFFF Environmental Data Management Procedure, dated November 11, 2021. 26
Remedial Investigation Report Appendix W 2020 Leidos Sediment Sampling and Sediment Transect TBD AECOM
Technical Basis Document Sediment Sampling and Sediment Transect Results for the Westinghouse Columbia Fuel Fabrication Facility (WCFFF), Revision 1 Prepared for. Westinghouse Columbia Fuel Fabrication Facility 5801 Bluff Road Hopkins, South Carolina 29061-9121 Prepared by: ieidos /J. 13397 Lakefront Drive, Suite 100 W. Clark Evers, CHP, CSP Earth City, Missouri 63045 Certified Health Physicist July 13, 2020 1
=
Background=== In July of 2019, the Westinghouse Columbia Fuel Fabrication Facility (WCFFF) collected 18 surficial (top six inches) sediment samples from areas of the site, including the on-site ditches, Sanitary Lagoon, East Lagoon, and Mill Creek. It was expected that samples from the Sanitary Lagoon, and East Lagoon would contain uranium (U), as these are active work areas within the WCFFF, and are known to be impacted. Additionally, one location within a storm water ditch, two locations in Upper Sunset Lake and one location in Lower Sunset Lake were identified to contain U concentrations above the residential use screening level (NUREG 1757, Vol. 2, Rev. 1, Appendix H), but below industrial use screening levels. These samples were collected from locations on the WCFFF property; therefore, the identification of U concentrations in the sediment does not pose any undue risk to public health and safety. A follow up sediment sampling campaign was conducted in November of 2019. Westinghouse collected sediment samples from Mill Creek along ten transects with an additional 28 sediment sampling locations, to obtain additional sediment quality data. Generally, there were three sample locations per transect; two within a few feet of the edges of the Mill Creek floodplain and one in the presumed middle of the flow channel. In cases where Mill Creek is significantly wider due to impoundment, four sediment sample locations were collected along the transect. Sediment samples above the Entrance Dike (SED 51 through SED-56) and below the Lower Sunset Lake Dike (SED-29 through SED-37) were collected to a total depth of 12 inches. In a few locations, the sample core was up to 16 inches in length. The sediment transect sampling locations are shown on Figure 16 from the Final Remedial Investigation (Rl) Data Summary Report (LTR-RAC-20-62), and are presented in Figure 1 of this report. Upstream Areas Sediment samples were collected at eight locations to assess background sediment quality. These sediment samples were collected at locations that are upstream of the surface water flow from the site, where only naturally occurring radioactivity is expected to be present in the sediment. Locations SED-11 and SED-12 were each collected from a storm water ditch and are representative of the naturally occurring sediment within the storm water ditches as it enters the WCFFF site boundary. Locations SED-51, SED-52, and SED-53 were collected just upstream of the site Entrance Dike, and locations SED-54, SED-55, and SED-56 were collected well upstream within the flow path of Mill Creek. These six sediment sampling locations are representative of the naturally occurring background sediment within Mill Creek, which Upper and Lower Sunset Lakes are part of. 2
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Site Features of Interest Sediment samples were collected from eight locations across the site in storm water ditches. These locations were selected as they best represent the initial areas where contaminants from the site could potentially migrate. Sediment sample locations SED-13 through SED-18 are representative of the flow path of storm water across the site as it travels towards Mill Creek. Sediment samples SED-23 and SED-24 were collected from a surface water body known as the Gator Pond. Sludge from the Sanitary Lagoon (SED-25 and SED-26), and the East Lagoon (SED-27 and SED-
- 28) were also sampled; however these areas are known to be impacted and represent active wastewater treatment areas of the site.
Upper and Lower Sunset Lakes Water depths in Upper and Lower Sunset Lakes are more profound than the non-impounded sections of Mill Creek. In the case of Lower Sunset Lake, a boat was the primary method used to reach each sampling location. In cases where water is shallow (i.e. SED-34, Figure 1) and not accessible by boat, hip waders were used to access the sediment sampling location. Previously collected sediment samples (SED-19 through SED-22) from this area of the site were surficial collections only. Downstream Areas Three of the sediment sampling transects (Figure 1) are downstream of the Lower Sunset Lake dike. This portion of Mill Creek is heavily forested, lowland swamp with minimal flow. The majority of the flow in Mill Creek through the Westinghouse property is by way of the diversion canal along the southern property boundary. The Exit Dike (Figure 1) is located just north of the diversion canal and contains a drainage pipe that connects the water flowing from the section of Mill Creek that flows through Upper and Lower Sunset Lakes to the water flowing down the man-made diversion canal. Although not fully impounding, the depth of the surface water in Mill Creek appears to increase downstream closer to the Exit Dike. Sampling Results Sediment samples were sent to an off-site laboratory for analysis of U, Tc-99, Fluoride, and Nitrate. Reported Fluoride and Nitrate results were below the EPA Regional Screening Levels for residential use, therefore comparisons to industrial screening levels was not necessary. The radiological screening levels in Table 1 are based on single contaminant concentrations for each isotope. When multiple radionuclides are present a "sum of fractions" (SOF) approach should be used to assess compliance with the concentration limit. The SOF for each unique sample is calculated using the following equation: Concu_ 234 Concu_ 235 Concu_ 238 Concrc- 99 SOF =---- +----+----+---- SSL,u-234 SSL,u-235 SSL,u-238 SSL,rc-99 4
The values in Table 1 represent soil concentrations of individual radionuclides, using generally accepted exposure parameters, that would be deemed in compliance with the dose limits specified in 10 CFR 20.1402 (e.g. equivalent to 25 mrem/year under Residential Use). Table 1: Residential and Industrial Use Screening Levels Contaminant Residential Screening Level Industrial Screening Level Basis of Screening Level NUREG 1757, Vol. 1-2, Uranium - 234 13 pCi/g (0.002 mg/Kg) 3,310 pCi/g (0.5 mg/kg) Appendix H1 NUREG 1757, Vol. 1-2, Uranium - 235 8 pCi/g (3.704 mg/Kg) 39 pCi/g (18 mg/kg) Appendix H1 NUREG 1757, Vol. 1-2, Uranium - 238 14 pCi/g (41.667 mg/Kg) 179 pCi/g (533 mg/kg) Appendix H1 Calculated based on NUREG Total Uranium 12.69 pCi/g (5.320 mg/Kg) 2,933 pCi/g (1,230 mg/kg) 1757, Vol. 2, Rev. 1-2, Appendix H2 NUREG 1757 Vol. 1-2 , Technetium - 99 19 pCi/g (1.110 E -03 mg/Kg) 89,400 pCi/g (5.2 mg/Kg) Appendix H1 The Residential Use Screening Levels (RUSLs) were determined using highly conservative assumptions to develop an exposure scenario where it is assumed that a person would construct a house on the property, live on the property, drink the groundwater, and eat produce farmed on the property. For this reason, the RUSLs are provided for reference, but samples collected from within the CFFF property boundary will ultimately be compared to the Industrial Use Screening Level (IUSL), which is representative of the current and future use of the property. The IUSLs are also based on conservative assumptions, but these assumptions better represent the current and future use of the WCFFF, as it is assumed that the industrial worker will not live on the property, or engage in the consumption of any food or water produced on the facility property. The sediment sample analytical results from the July 2019 sampling event are provided for reference in Table 2, along with the calculated SOF for both Residential and Industrial use scenanos. 5
Table 2: June 2019 Sediment Sampling Results Analyte (pCi/g) SOF SOF Sample ID U-234 U-235 U-238 Tc-99 Resid. Ind. SED-11 1.14 0.00 0.74 0.002 0.14 0.00 SED-12 0.93 0.06 1 1.17 0.00 2 0.16 0.01 SED-13 1.67 0.161 1.33 0.00 2 0.24 0.01 SED-14 1.42 0.03 1 0.39 0.02 0.14 0.00 SED-15 2.58 0.18 2.05 5.62 0.66 0.02 SED-16 14.90 0.68 2.77 4.94 1.69 0.04 SED-17 0.66 0.02 0.30 7.50 0.47 0.00 SED-18 0.22 0.02 1 0.30 0.00 2 0.04 0.00 SED-19 32.50 2.30 8.18 6.28 3.70 0.11 SED-20 62.50 3.12 14.90 0.00 2 6.26 0.18 SED-21 1.86 0.101 1.96 4.12 0.51 0.01 SED-22 117.00 4.98 28.00 0.00 2 11.62 0.32 SED-23 1.35 0.00 1 1.69 50.80 2.90 0.01 SED-24 1.14 0.06 1 0.94 35.80 2.05 0.01 SED-25 907.00 41 .10 149.00 8.55 86.00 2.16 SED-26 222.00 11 .00 46.90 1.68 21.89 0.61 SED-27 225.00 11 .90 37.40 0.002 21.47 0.58 SED-28 254.00 12.40 44.60 5.75 24.58 0.64 1 Value is estimated, result below detection limit 2 Negative values below lab bkg, set to zero The sediment samples that were collected are below the applicable IUSLs, with the exception of SED-25, which was collected from the Sanitary Lagoon, an area of the site that is known to be impacted. The Sanitary Lagoon is an earthen lagoon within a controlled and fenced area of the facility, and further investigation is planned under the DHEC Consent Agreement and associated Remedial Investigation Work. Public access to this area of the site is restricted. In addition, the sample location itself represents an inaccessible area as it is located in the Sanitary Lagoon sludge that is covered by several feet of treated sanitary wastewater awaiting chlorine disinfection. This sample does not represent undue risk to the workforce at this time, but routine dose monitoring should be performed for personnel who work in this area. Samples SED-23 and SED-24 (both collected from the Gator Pond) were identified to be above the RUSL due to Tc-99. Sediment sample locations SED-26 (also collected from the Sanitary 6
Lagoon), SED-27 and SED-28 (both collected from the East Lagoon) were also identified to contain concentrations ofU above the RUSL, as expected. Sediment sampling location SED-16 was identified to be above the RUSL, however this area is below the applicable IUSL, and appears to be isolated, as U concentration in downstream sediment samples SED-17, and SED-18 were below RUSL. Three samples from Mill Creek were found to be above the RUSL; SED-19 and SED-20 were collected in Upper Sunset Lake upstream of the Upper Sunset Lake Dike, and sediment sample SED-22 was collected from Lower Sunset Lake upstream of the Lower Sunset Lake Dike. It is important to note that these samples represent sediment that is contained on the WCFFF property and the RUSL is used for reference only. The sample results are below the IUSL, which is a more appropriate comparison as these samples are representative of an industrial use area. However, out of prudence to public and environmental health and safety, additional investigations were performed within Mill Creek, both up and down stream. The sediment sample analytical results from the November 2019 sampling event are provided in Table 3. 7
Table 3: November 2019 Sediment Transect Sampling Results Analyte (pCi/g) SOF SOF Sample ID U-234 U-235 U-238 Tc-99 Resid. Ind. SED-29-0-6 6.23 0.31 2.51 0.00 2 0.70 0.02 SED-29-06-12 1.81 0.21 1.55 0.00 2 0.28 0.01 SED-29-12-16 1.23 0.18 1.16 0.002 0.20 0.01 SED-30-0-6 5.71 0.19 2.51 2.43 1 0.77 0.02 SED-30-6-12 1.41 0.03 1 1.28 0.00 2 0.20 0.01 SED-31-0-6 2.81 0.07 1 1.75 0.96 1 0.40 0.01 SED-31-6-12 2.96 0.11 1 1.69 0.00 2 0.36 0.01 SED-32-0-6 3.71 0.101 2.00 5.06 1 0.71 0.01 SED-32-6-12 10.00 0.47 3.28 0.002 1.06 0.03 SED-33-0-6 5.06 0.39 2.52 0.00 2 0.62 0.03 SED-33-6-12 1.27 0.101 1.56 0.00 2 0.22 0.01 SED-33-12-16 1.06 0.05 1 1.09 0.00 2 0.17 0.01 SED-34-0-6 3.13 0.13 1 1.81 0.00 2 0.39 0.01 SED-34-6-12 2.93 0.05 1 1.73 0.00 2 0.36 0.01 SED-35-0-6 2.26 0.18 1.59 0.00 2 0.31 0.01 SED-35-6-12 1.59 0.04 1 1.66 0.00 2 0.25 0.01 SED-36-0-6 4.40 0.21 2.38 0.00 2 0.53 0.02 SED-36-6-12 1.50 0.09 1.05 0.00 2 0.20 0.01 SED-37-0-6 4.88 0.25 1.78 0.00 2 0.53 0.02 SED-37-6-12 2.04 0.15 1.62 0.00 2 0.29 0.01 SED-38 0 3.26 0.20 1.68 16.501 1.26 0.02 SED-39 0 11 -6 11 1.86 0.01 1 1.70 0.00 2 0.27 0.01 SED-40 0 11 -6 11 1.90 0.13 1.24 0.00 2 0.25 0.01 SED-41 0 11 -6 11 1.72 0.04 1 1.41 1.001 0.29 0.01 SED-42 0 11 -6 11 6.12 0.29 2.23 5.94 1 0.98 0.02 SED-43 0 11 -6 11 47.50 2.32 12.10 0.00 2 4.81 0.14 SED-44 0 11 -6 11 8.86 0.38 2.62 6.23 1 1.24 0.03 SED-45 0 11 -6 11 5.86 0.27 2.20 2.83 1 0.79 0.02 SED-46 0 -6 11 11 4.02 0.18 2.15 0.00 2 0.49 0.02 SED-47 0 -6 11 11 3.18 0.23 1.46 0.00 2 0.38 0.02 SED-48 0 11 -6 11 2.57 0.09 1 1.98 0.00 2 0.35 0.01 SED-48-DUP 0 11 -6 11 2.43 0.01 1 1.62 0.00 2 0.30 0.01 SED-49 0 -6 11 11 4.59 0.22 2.11 0.00 2 0.53 0.02 SED-50 0 -6 11 11 3.64 0.101 1.86 0.91 1 0.47 0.01 1 Value is estimated, result below minimum detectable concentration 2 Negative values below laboratory analytical background are set to zero Sediment samples SED-38, SED-43, and SED-44 (Figure 1) from the November 2019 sediment sampling event also contained U concentrations above the RUSL. As can be seen in Figure 1, SED-19 is located near the flow path of storm water runoff from the facility. SED-20, SED-43, 8
and SED-44 are just upstream of the Upper Sunset Lake Dike, and SED-22 and SED-38 are just upstream of the Lower Sunset Lake Dike. These results seem to indicate that the dikes are serving as effective impounding barriers. The samples containing uranium (U) noted above were located near the northern edges of Upper and Lower Sunset Lakes closest to the facility. Samples collected farther from the edge of the lakes contained lower or non-detectable U concentrations. This observation coupled with the lack of U within the upper surficial groundwater immediately up-gradient of Upper Sunset Lake and Lower Sunset Lake indicates that the U was transported to the lakes via overland flow. Concentrations above the residential-use screening level (RUSL) were not detected in samples collected up-gradient of the entrance dike nor down-gradient of the Lower Sunset Lake Dike, indicating that the extent of the elevated U is confined between these structures. The dikes restrict the flow of surface water causing a pooling effect, which would encourage any suspended solids to settle out upstream of the dikes. As there are no current activities that would be a likely source of the detected U, transport of impacted soil and sediments from historical events are the likely source of radiological impacts. The only known historical event that may have resulted in U being transported to the on-site Upper and Lower Sunset Lake sediments is the West Lagoon 1 release which occurred in October 1971 and was documented in the 1977 NRC Environmental Impact Appraisal (EIA). The 1977 NRC EIA also concluded that the causeway/dike structures restricted the potential impact of the West Lagoon 1 release. Sample location SED-32 was sampled at both the surface (top 6 inches) and subsurface interval (6-12 inches below the surface). The surface interval contained radiological concentrations below the RUSL, but the subsurface interval contained radiological concentrations above the RUSL. While this location is still on the WCFFF property and is representative of an industrial use area, it is important to note that subtraction of naturally occurring, background radiation has not been performed. If background radioactivity is subtracted from the sample, it falls below the RUSL. In order to establish the level of naturally occurring, background radioactivity in the sediment of Mill Creek, sediment samples from two transects were collected upstream of the WCFFF from areas that have not been influenced by activities at the facility. Sediment sample locations SED-51 through SED-56 were selected as areas representative of background conditions within Mill Creek. These locations are protected from potential back flow by the Entrance Dike and are representative of the naturally occurring levels ofU found in the surrounding soil of the area. The results of these background sediment sample locations are provided in Table 4. 9
Table 4: Background Sediment Sampling Results Analyte (pCi/g) SOF SOF Sample ID U-234 U-235 U-238 Resid. Ind. SED-51 0"-6" 2.1 ND 1.42 0.26 0.01 SED-51 6"-12" 1.27 ND 1.15 0.18 0.01 SED-52 0"-6" 1.77 ND 1.72 0.26 0.01 SED-52 6"-12" 1.88 ND 1.45 0.25 0.01 SED-53 0"-6" 2.15 0.194 1.45 0.29 0.01 SED-53 6"-12" 2.06 ND 2.34 0.33 0.01 SED-54 0"-6" 1.78 ND 1.36 0.23 0.01 SED-54 6"-12" 1.48 ND 1.87 0.25 0.01 SED-55 0"-6" 2.05 ND 1.74 0.28 0.01 SED-55 6"-12" 1.62 0.155 1.62 0.26 0.01 SED-56 0"-6" 2.02 0.214 1.4 0.28 0.01 SED-56 6"-12" 1.89 ND 1.72 0.27 0.01 SED-56-DUP 0"-6" 2.82 ND 2.11 0.37 0.01 Ave Surface 1.98 0.07 1.52 0.27 Ave Sub-Surface 1.70 0.03 1.69 0.25 Total Average 1.84 0.05 1.60 0.26 As can be seen from Table 4 above, the naturally occurring background levels of U in the sediment represent approximately1/4 of the RUSL. Tc-99 is not a naturally occurring nuclide; therefore it is not expected to be found in background samples. Tc-99 concentrations within the sediment sample analytical results from these locations were below the Minimum Detectable Concentration (MDC). Since U background represents a significant portion of the RUSL, background subtraction is warranted. For the sediment samples with analytical results above the RUSL, the average U background value was subtracted to produce a net sample result. The net sample result, and corresponding SOF values are presented in Table 5. 10
Table 5: RSL Exceedances With Adjustments to Account for Natural Background Concentrations of U Analyte (pCi/g) SOF SOF Sample ID U-234 U-235 U-238 Tc-99 Resid. Ind. SED-19 30.66 2.25 6.58 6.28 1 3.44 0.10 SED-20 60.66 3.07 13.30 0.00 2 6.00 0.17 SED-22 115.16 4.93 26.40 0.00 2 11.36 0.31 SED-32-6-12 8.16 0.42 1.68 0.00 2 0.80 0.02 SED-38 0 1.42 0.16 0.08 16.501 1.00 0.01 SED-43 0 -6 11 11 45.66 2.27 10.50 0.00 2 4.55 0.13 SED-44 0 11 -6 11 7.02 0.33 1.02 6.23 1 0.98 0.02 1 Value is estimated, result below minimum detectable concentration 2 Negative values below laboratory analytical background are set to zero As can be seen from Table 5 above, sediment sample locations SED-32 and SED-44 net sample results are found to be below the RUSL when adjusted for background U concentrations in the sediment. Sediment sample locations SED-19, SED-20, SED-22, SED-38, and SED-43 while above RUSL, do not exceed the IUSL. The IUSL is an appropriate screening level for areas of the WCFFF that are representative of industrial use. It is also important to note that all sediment samples collected downstream of the Lower Sunset Lake Dike are below the RUSL when adjusted for background. Sediment sample locations SED-29 through SED-31 represent the area just upstream of the Exit Dike and the WCFFF boundary. It would be expected that if impacted sediment were to migrate out of Lower Sunset Lake that the area upstream of the Exit Dike would be a likely settling point. The average Residential SOF of these three samples is 0.42 and the background adjusted net Residential SOF is 0.15, indicating that there is no concern for the potential migration of impacted sediment from the WCFFF. Conclusions In total, 63 unique sediment samples were collected from 46 locations across the WCFFF and within Mill Creek crossing the Southern portion of the WCFFF. Several upstream areas were sampled to establish the naturally occurring background U concentrations that would be expected in every sample. Sediment samples were collected from multiple transects in Upper and Lower Sunset Lake where migration of contamination may occur in the sediment. Sediment samples were also collected from several sections of Mill Creek downstream of the Lower Sunset Lake Dike where no migration of impacted sediment was expected to be observed. A review of the sediment analytical results concludes that naturally occurring U is expected to be present in the sediment samples and that the background levels are significant enough to warrant background subtraction. Areas of U impact above the RUSL were observed in Upper and Lower Sunset Lake, but the detected levels of sediment impact do not pose a risk to public health and safety, the environment, or to the workers at the WCFFF. The sediment impacts above RUSL 11
were located just upstream of the dikes in both Upper and Lower Sunset Lakes. This supports the conclusion that the dikes are functioning as effective impounding barriers. Fast moving water can carry solids downstream in a suspended form. Restricting the flow of surface water causes pooling, which encourages suspended solids to settle out of the water. Therefore, it is expected that the sediment analytical results upstream of the Lower Sunset Lake Dike represents the furthest downstream extent of sediment impact from the WCFFF. Most importantly, no contamination above the RUSL was identified downstream of the Lower Sunset Lake Dike. Sediment samples collected upstream of the Exit Dike, and subsequently the WCFFF property boundary, indicate that there is no concern for the potential migration of impacted sediment from the facility. Should elevated sample results be identified in the future, or isolated incidents such as environmental releases raise the potential for the migration of contamination, additional monitoring and potentially remedial action may be necessary. However, the only action that is required at this time is the continued environmental monitoring of Mill Creek as part of the WCFFF periodic environmental monitoring program, and the continued implementation of the DHEC Consent Agreement and associated Remedial Investigation Work. References NRC 2006. Consolidated Decommissioning Guidance: Decommissioning Process for Materials Licensees, NUREG-1757, Vol. 1, Rev. 2. NRC 2006. Consolidated Decommissioning Guidance: Characterization, Survey, and Determination of Radiological Criteria, NUREG-1757, Vol. 2, Rev. 1. 12
Remedial Investigation Report Appendix X Pressure Transducer Hydrographs AECOM
W-4R 113.00 5.00 112.50 4.50 112.00 4.00 111.50 3.50 111.00 3.00 110.50 2.50 Rainfall II Elevation Groundwater Elevation (ft) 110.00 2.00 109.50 1.50 109.00 1.00 108.50 0.50 108.00 0.00 7/29/21 8/18/21 9/7/21 9/27/21 10/17/21 11/6/21 11/26/21 12/16/21 1/5/22 1/25/22 2/14/22 3/6/22
W-15 117.50 5.00 4.50 117.00 4.00 3.50 116.50 3.00 2.50 Rainfall II Elevation Groundwater Elevation (ft) 116.00 2.00 1.50 115.50 1.00 0.50 115.00 0.00 3/30/21 5/19/21 7/8/21 8/27/21 10/16/21 12/5/21 1/24/22 3/15/22
W-16 123.00 1.20 122.80 1.00 122.60 122.40 0.80 122.20 122.00 0.60 Rainfall II Elevation Groundwater Elevation (ft) 121.80 0.40 121.60 121.40 0.20 121.20 121.00 0.00 9/16/21 10/6/21 10/26/21 11/15/21 12/5/21 12/25/21 1/14/22 2/3/22 2/23/22 3/15/22
W-27 114.00 5.00 4.50 113.50 4.00 3.50 113.00 3.00 112.50 2.50 Rainfall II Elevation Groundwater Elevation (ft) 2.00 112.00 1.50 1.00 111.50 0.50 111.00 0.00 3/30/21 5/19/21 7/8/21 8/27/21 10/16/21 12/5/21 1/24/22 3/15/22
W-60 118.50 1.20 118.40 1.00 118.30 0.80 118.20 118.10 0.60 Rainfall II Elevation Groundwater Elevation (ft) 118.00 0.40 117.90 0.20 117.80 117.70 0.00 11/5/21 11/15/21 11/25/21 12/5/21 12/15/21 12/25/21 1/4/22 1/14/22 1/24/22 2/3/22 2/13/22 2/23/22 3/5/22 3/15/22
W-61 122.20 1.20 122.10 1.00 122.00 121.90 0.80 121.80 121.70 0.60 Rainfall II Elevation Groundwater Elevation (ft) 121.60 0.40 121.50 121.40 0.20 121.30 121.20 0.00 11/5/21 11/15/21 11/25/21 12/5/21 12/15/21 12/25/21 1/4/22 1/14/22 1/24/22 2/3/22 2/13/22 2/23/22 3/5/22
W-92 113.00 5.00 4.50 112.00 4.00 111.00 3.50 3.00 110.00 2.50 Rainfall II Elevation 109.00 Groundwater Elevation (ft) 2.00 1.50 108.00 1.00 107.00 0.50 106.00 0.00 3/29/21 5/18/21 7/7/21 8/26/21 10/15/21 12/4/21 1/23/22 3/14/22
W-96 115.00 5.00 4.50 114.00 4.00 3.50 113.00 3.00 112.00 2.50 Rainfall II Elevation Groundwater Elevation (ft) 2.00 111.00 1.50 1.00 110.00 0.50 109.00 0.00 6/28/21 8/17/21 10/6/21 11/25/21 1/14/22 3/5/22
W-104 113.00 1.20 112.50 1.00 112.00 0.80 111.50 0.60 Rainfall II Elevation Groundwater Elevation (ft) 111.00 0.40 110.50 0.20 110.00 0.00 11/29/21 12/19/21 1/8/22 1/28/22 2/17/22 3/9/22
W-105 110.00 5.00 4.50 109.50 4.00 109.00 3.50 108.50 3.00 108.00 2.50 Rainfall II Elevation Groundwater Elevation (ft) 2.00 107.50 1.50 107.00 1.00 106.50 0.50 106.00 0.00 5/3/21 6/22/21 8/11/21 9/30/21 11/19/21 1/8/22 2/27/22
W-124 111.00 5.00 110.50 4.50 110.00 4.00 109.50 3.50 109.00 3.00 108.50 2.50 Rainfall II Elevation Groundwater Elevation (ft) 108.00 2.00 107.50 1.50 107.00 1.00 106.50 0.50 106.00 0.00 7/29/21 9/17/21 11/6/21 12/26/21 2/14/22
W-125 110.50 5.00 4.50 110.00 4.00 109.50 3.50 109.00 3.00 108.50 2.50 Rainfall II Elevation 108.00 Groundwater Elevation (ft) 2.00 107.50 1.50 107.00 1.00 106.50 0.50 106.00 0.00 7/29/21 9/17/21 11/6/21 12/26/21 2/14/22
W-126 111.00 5.00 110.50 4.50 110.00 4.00 109.50 3.50 109.00 3.00 108.50 2.50 Rainfall II Elevation Groundwater Elevation (ft) 108.00 2.00 107.50 1.50 107.00 1.00 106.50 0.50 106.00 0.00 7/29/21 9/17/21 11/6/21 12/26/21 2/14/22
PZ-1 111.00 5.00 4.50 110.50 4.00 110.00 3.50 109.50 3.00 109.00 2.50 Rainfall II Elevation 108.50 Groundwater Elevation (ft) 2.00 108.00 1.50 107.50 1.00 107.00 0.50 106.50 0.00 7/29/21 9/17/21 11/6/21 12/26/21 2/14/22
W-60 and W-61 122.20 1.20 121.70 1.00 121.20 120.70 0.80 120.20 Rainfall 0.60 W-60 W-61 III 119.70 Groundwater Elevation (ft) 119.20 0.40 118.70 0.20 118.20 117.70 0.00 11/5/21 11/25/21 12/15/21 1/4/22 1/24/22 2/13/22 3/5/22
Canal 111.00 5.00 110.50 4.50 110.00 4.00 109.50 3.50 109.00 3.00 108.50 2.50 Rainfall II Elevation Surface Water Elevation (ft) 108.00 2.00 107.50 1.50 107.00 1.00 106.50 0.50 106.00 105.50 0.00 3/26/21 5/15/21 7/4/21 8/23/21 10/12/21 12/1/21 1/20/22 3/11/22
Entrance 112.00 5.00 4.50 111.50 4.00 111.00 3.50 110.50 3.00 110.00 2.50 Rainfall II Elevation 109.50 Surface Water Elevation (ft) 2.00 109.00 1.50 108.50 1.00 108.00 0.50 107.50 0.00 3/26/21 5/15/21 7/4/21 8/23/21 10/12/21 12/1/21 1/20/22 3/11/22
Upper 2 112.50 5.00 4.50 112.00 4.00 111.50 3.50 111.00 3.00 110.50 2.50 Rainfall II Elevation Surface Water Elevation (ft) 2.00 110.00 1.50 109.50 1.00 109.00 0.50 108.50 0.00 4/19/21 6/8/21 7/28/21 9/16/21 11/5/21 12/25/21 2/13/22
Upper 112.50 5.00 4.50 112.00 4.00 111.50 3.50 3.00 111.00 2.50 Rainfall II Elevation 110.50 Surface Water Elevation (ft) 2.00 1.50 110.00 1.00 109.50 0.50 109.00 0.00 3/26/21 5/15/21 7/4/21 8/23/21 10/12/21 12/1/21 1/20/22 3/11/22
Lower 113.00 5.00 4.50 112.50 4.00 112.00 3.50 111.50 3.00 111.00 2.50 Rainfall II Elevation 110.50 Surface Water Elevation (ft) 2.00 110.00 1.50 109.50 1.00 109.00 0.50 108.50 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Mill Creek Surface Water 113.00 5.00 4.50 112.00 4.00 111.00 3.50 3.00 110.00 Rainfall Canal Lower Surface Water Elevation (ft) m 2.50 Upper Upper 2 Entrance Creek IIIIIII 109.00 2.00 1.50 108.00 1.00 107.00 0.50 106.00 0.00 3/25/2021 12:00 5/14/2021 12:00 7/3/2021 12:00 8/22/2021 12:00 10/11/2021 12:00 11/30/2021 12:00 1/19/2022 12:00 3/10/2022 12:00
Gator Pond 118.00 5.00 4.50 117.90 4.00 117.80 3.50 3.00 117.70 2.50 Rainfall II Elevation 117.60 Surface Water Elevation (ft) 2.00 1.50 117.50 1.00 117.40 0.50 117.30 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Gator Pond Area 5.00 122.00 4.50 120.00 4.00 118.00 3.50 3.00 116.00 Rainfall Gator W-16 2.50 W-27 114.00 W-4R W-15 W-92 IIIIIII 2.00 Surface Water and Groundwater Elevation (ft) 112.00 1.50 110.00 1.00 108.00 0.50 106.00 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Gator Pond W-15 W-16 123.00 5.00 4.50 122.00 4.00 121.00 3.50 120.00 3.00 Rainfall 119.00 2.50 Gator W-16 W-15 IIII 2.00 118.00 Surface Water and Groundwater Elevation (ft) 1.50 117.00 1.00 116.00 0.50 115.00 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Gator Pond, W-4R, W-27, and W-92 118.00 5.00 4.50 116.00 4.00 3.50 114.00 3.00 Rainfall Gator 112.00 2.50 W-27 W-92 W-4R IIIII 2.00 Surface Water and Groundwater Elevation (ft) 110.00 1.50 1.00 108.00 0.50 106.00 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Gator Pond, Lower Sunset Lake, W-27, and W-92 118.00 5.00 4.50 116.00 4.00 3.50 114.00 3.00 Rainfall Lower 112.00 2.50 W-92 W-27 Gator IIIII 2.00 Surface Water and Groundwater Elevations (ft) 110.00 1.50 1.00 108.00 0.50 106.00 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Lower Sunset Lake Area 113.00 5.00 4.50 112.00 4.00 111.00 3.50 Rainfall 3.00 Lower 110.00 W-105 W-92 2.50 W-96 W-126 W-124 109.00 W-125 2.00 PZ-1 W-104 Surface Water and Groundwater Elevations (ft) IIIIIIIIII 1.50 108.00 1.00 107.00 0.50 106.00 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Lower Sunset Lake, W-27, and W-92 114.00 5.00 4.50 113.00 4.00 112.00 3.50 111.00 3.00 Rainfall 110.00 2.50 Lower W-92 W-27 IIII 2.00 109.00 Surface Water and Groundwater Elevations (ft) 1.50 108.00 1.00 107.00 0.50 106.00 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Lower Sunset Lake, W-96, W-126, and PZ-1 113.00 5.00 4.50 112.00 4.00 111.00 3.50 3.00 110.00 Rainfall Lower 2.50 W-96 W-126 PZ-1 IIIII 109.00 2.00 Surface Water and Groundwater Elevations (ft) 1.50 108.00 1.00 107.00 0.50 106.00 0.00 6/28/21 8/17/21 10/6/21 11/25/21 1/14/22 3/5/22
Lower Sunset Lake, W-104, and W-124 114.00 5.00 4.50 113.00 4.00 112.00 3.50 111.00 3.00 Rainfall 110.00 2.50 Lower W-124 W-104 IIII 2.00 109.00 Surface Water and Groundwater Elevations (ft) 1.50 108.00 1.00 107.00 0.50 106.00 0.00 3/25/21 5/14/21 7/3/21 8/22/21 10/11/21 11/30/21 1/19/22 3/10/22
Lower Sunset Lake, W-105, and W-125 113.00 5.00 4.50 112.00 4.00 111.00 3.50 3.00 110.00 Rainfall 2.50 Lower W-105 W-125 IIII 109.00 2.00 Surface Water and Groundwater Elevations (ft) 1.50 108.00 1.00 107.00 0.50 106.00 0.00 5/3/21 6/22/21 8/11/21 9/30/21 11/19/21 1/8/22
Remedial Investigation Report Appendix Y Conceptual Site Model AECOM
Conceptual Site Model Rev. 4 Westinghouse Columbia Conceptual Site Model Rev. 4, pg. 1
Site CSM Block Diagram - Known Spills West Lagoon 1 EL - Former East Lagoon NL - North Lagoon (Potential Uranium Source) 2.5X Vertical Former Oil House Spiking Stations & SL - South Lagoon WL 1 - West Lagoon 1 (Potential voe Source) Solvent Extraction (Potentia l voe Source) Uranyl Nitrate Operations Exaggeration WL2
- West Lagoon 2 (Alpha/Uranium Source)
SAN
- Sanitary Lagoon Cracked Sump (Beta/Tc-99 Source) 150' 100' 50' Flow of Mill Creek Loe. # COPCs Loe . # COPCs F, U, N03, 12C U, N03 23C u 34C U, F, N03 45C N/A 56C U, F, N03 U, N03, Gasoline, 2C U, N03 13C U, N03 24 C 35C N/A 46C S7C u HF PCE u Northern Storage Area 3C N/ A 14C N/A 25 C U, F, N03 36C NaO H 47C N/A SSC U & Tc-99 Chemical Area 4C N/ A lS C U, F,N 0 3 26C UN, N0 3, 37C N/A 48C HF, U 59C U, Tc-99 U Tc-9 9 Mechanical Area SC UN, N03 , U, 16C U, Tc-99 27C U, N03 38C 49C u 60C U, Tc-99 N/A Tc-99 Sanitary Lagoon U, N03, ADU, 6C 17C F, U, N03 28C U, Tc- 99 39C N/A soc u 61C U, Tc-99 Southern Storage Area Tc-99 UN, N0 3, U, Wastewater Treatment 7C 18C F, U, N03 29C U, Tc-99 40C Oil SlC Lime 62C u Tc-99 UN, N03 ,
West Lagoon SC N/A 19C U Tc-99 30C U, N03 41C U, N0 3 S2C Fuel Oil 63C u HF, UN,
- Western Storage Area 9C U, N03 20C 31 C F, U, N03 42C u S3C u 64C U, Tc-99 N03 U UN, N03 , - Upper Sands lOC U, N03 21C U, Tc-9 9 32C HF, No U 43C N/A S4C 6SC U, Tc-99 u - Surficial Aquifer Potentiometric Surface (2021) UN, N0 3, U, U, N03, UC 22C u, 33 C 44C F, U, N0 3 SSC U, Tc-99 66C U, Tc-99 Tc-99 Tc-99 - Black Creek Confi ning Bed Conceptual Site Model Rev. 4 , pg. 2
Top of Black Creek Contour Map
~
EL Former East Lagoon NL North Lagoon SL south Lagoon SAN Sanitary Lagoon WU West Lagoon I WL2 West Lagoon II c : ) MillCreek o Black Creek Clay Elevatio n (ft-msl) Elev. Contour of Top of Black Creek Clay (ft-msl) r--r Depression 5 fl Contour Interval
- - No rmal 5 11 Co ntou r Interva l Northt Conceptual Site Model Rev. 4 , pg. 3
Site Map with Man-Made Canal EL - Former East Lagoon NL - North Lagoon SL - South Lagoon WL 1 - West Lagoon I WL2 - West Lagoon II SAN - Sanitary Lagoon -- Northern Storage Area Chemical Area Mechanical Area Sanitary Lagoon Southern Storage Area Wastewater Treatment West Lagoon 6 [J - . 4 i-Western Storage Area 4 o-O
~~ .
.£-
,,.!r..
.,.~ ...
~ ~
Conceptual Site Model Rev. 4 , pg. 4
Site CSM Block Diagram - Transect Reference EL - Former East Lagoon NL - North Lagoon SL - South Lagoon WL 1 - West Lagoon I WL2 - West Lagoon II SAN - Sanitary Lagoon -- Northern Storage Area Chemical Area Mechanical Area Sanitary Lagoon Southern Storage Area Wastewater Treatment West Lagoon Western Storage Area Conceptual Site Model Rev. 4 , pg. 5
Site CSM Block Diagram - Geology 100 1111 c1ay Silt Silty/Clayey sand illl Sand Black creek confining Unit 1111 Black creek Aquifer 2.5X Vertical Exaggeration Conceptual Site Model Rev.4, pg. 6
Site CSM Cross Sections H '°~~=~~~~~~~~m~~Q~Q~--======-===--=~--- H' -* West Lagoon II
.... 2.5X Vertical Exaggeration 100 ,oo
~~~~~~@~~~~~~~-~Q~-------------------
>> ~ ~ ~ m * ~ ~ ~ m m ~ m - = = = - = - = - = - = =
....H' 15X Vertical Exaggeration Wells up to 75' away from the transect
"' are projected onto the cross sections.
Wells that are >20 ft and less than 75 ft
'" are indicated with an asterisk (*).
Borings are projected from up to 100 from the transect for stratigraphic interpretation
"' and evaluation.
,oo
. Legend
~ Shallow Aquifer Potentiomelric Surface
. ~ Well Riser 1111 Mechanical Area OU
. ~ Well Screen
~ Surface Water
,. Lithology
,. El Silty/Clayey Sand
. Surficial Soil { 1111 Clay
. Aquifer IIII Silt
~ Sand 1111 Black Creek Confining Unit
~ Black Creek Aquifer Inferred Geologic Contact m m t!(] '15 450 !52l ~ 750 ~ 900
- = = - = - - - - - - -
Conceptual Site Model Rev. 4 , pg. 7
1 , , 1 t 1 , , 1 t , 1 1 r Site CSM Cross Sections B ----------------------------------------------- 1 , 1 1 , 1 1 r , , 1 1 , 1 f 1 , , , 1 , , 1 t , t , 1 1 , , t , B' S 1~
~ 2.5X Vertical Exaggeration West ,,. Lagoon I
B ,..*-~~-~-~~-~~-~~-~-~~-~~-~~-~~~~-~~-~~-~~~~-~~-~~-~_, ....... 15X Vertical Exaggeration Wells up to 75' away from the transect are projected onto the cross sections.
'" Wells that are >20 ft and less than 75 ft are indicated with an asterisk (*).
Borings are projected from up to 100 from the transect for stratigraphic interpretation
. and evaluation.
" " Legend
~ Shallow Aquifer Potentiomelric Surface
~ Well Riser 1111 Mechanical Area OU
~ Surface Water
,. ~ Well Screen
., Lithology El Silty/Clayey Sand Surficial Soil { 1111 Clay Aquifer IIII Silt
. ~ Sand
" 1111 Black Creek Confining Unit
~ Black Creek Aquifer
" Inferred Geologic Contact I Black C<eek Aquifer Conceptual Site Model Rev. 4 , pg. 8
.u, J7'2'5 1800 1US t t!O ~ ,,oa 2:115 2250 H2S
Site CSM Cross Sections G 50 100 150 200 250 : __: , ,.#: 450 ~ 5.50 . .':':. . . 150 700 750 800 MO 800 9SO 1000 1050 HOO 1150 1200 1250 1300 1350 1400 1450 1500 1"° 1600 1650 G' 2.5X Vertical Exaggeration South
,so 150
,oo 100 so so so 100 ISO
,so 200 22, 250 ,00 lSO ... 450
,so 500
.,, S50 ...... 650 700 750 ....,,... ,..
,.. 950 1000 1050 1100 1150 1200 1250 1300 1350 ,... 1450 1500 1550 1600 1650 75 300 S75 675 750 97S
""' '200 1275 1350 1425 1500 1575 15X Vertical Exaggeration 14, 7 Mechanical Area Chemical Area lmnac:l@d \NW Lin@
N- r '" Wells up to 100' away from the transect .. 3::3::
... are projected onto the cross sections.
Wells that are >20 ft and less than 100 ft 130
'" are indicated with an asterisk (*).
1,0 i:,o Borings are projected from up to 100 from the transect for stratigraphic interpretation JI '"' and evaluation. 120 120 Legend us-t II II ~ -<==* R==> ~ 11 Il l II 11 11 II I ILJ II II R - l iiiiiiii.iiil Lower C Sunset ~ Shallow Aquifer Potentiometric Surfac
..._, Lake t'" ~ Well R;m 1-1 II 11-1 II 11 11 II 111-1 II II ~ no - Mechanica l A rea OU UO-j
"' - Chemica l Area OU 105 -.... '
1-,0, Well Screen
- Surface Water
,oo \. 11 ~ *oo Lithology { S sn~1c1, ,,, Saod
. '\.- 11 I- OS Surficial Soil - Clay
. - - +,o Aquifer -
=._J sa nd Silt
. ...... l- o5 - Black Creek Confining Unit c::::::l Black Creek Aqu ifer
"' "' Inferred Geologic Contact 75 75 ,so 22, 300 375 ,so .,, ... 675 750 625 ,.. 975 1050 ,,,, 1200 12rs
'"° 1425 ,... 1S7S ,... 75 Conceptual Site Model Rev. 4 , pg. 9
Fo :;o 100 150 200 250 :,oo 350 400 4!10 500 Site CSM Cross Sections S50 eco 650 roo 750 eoo 8$0 900 'ISO ,000 11>50 1100 1150 1200 1250 1:,00 1350 i,oo 14:;o 1500 1s50 1600 1650 1100 1750 1&i0 1ssa 1r,oo '"° :zooo 2050 F' No<1h 2.5X Vertical Exaggeration Sovlh Eui w,.,
~
I. . l!O Lower Sunset Lake 100 100 o '°~~~~~sso@@soo~~~~~eoo~~~=-====~===========--~=
. ~ ~ ... - ~ ~ - - = - - - - , . 140 15X Vertical Exaggeration Wells up to 75' away from the transect 130 130 are projected onto the cross sections.
Wells that are >20 ft and less than 75 ft 120 120 are indicated with an asterisk (*). Borings are projected from up to 100 from Lower Sunset Lake the transect for stratigraphic interpretation 110 110 and evaluation. 100 ,oo Legend
----5Z. Shallow Aquifer Potentiometric Surface
~ Well Riser - Mechanical Area OU 90 90
~ Well Screen - Chemical Area OU
- Surface Wate r
. . Lithology
"' NOTE: L-2. L-3, and L4 have been shown above to demonstrate the close-sl knovm isoil types in the area of Lower Surflclal Soll Aquifer
{
-s*
5 j Silty/Clayey Sand
- Clay L J Sand tit Black Creek Confining Unit Isunset Lake. They have been
. jprojecled onto the section for 1reference lnlo the geologic Interpretation.
'The top hatched area :are dike fill.
. - Black Creek Aquifer Inferred Geologic Contact l!O
""' ... eoo 150 ~ ,... 1200 IS!O 1!00 ,... 1'00 ....
Conceptual Site Model Rev. 4 , pg. 10
Site CSM Cross Sections J O 50 100 150 200 250 300 350 400 4.50 500 S.S0 l!I00_ _...__.__.__..____. Nol1h,..__...__.__..,_____,,.__.__..__.__..,___,.__.__..__._ GS0 7'00 750 900 9:50 900 950 1000 10:50 11IXI 1150 1200 12'50 1300 1350 1400 14.50 1500 IS.SO 1&00 16.50 1700 17SO 1800 1850 1900 1!>5,0 2000 2050 2-100 _ _...__..._....,__..__,_....__...__.__..,_____,_ _.__...__.__..,___,.__.__..__.__....__.__.__..__.__ _...__._~ Soulh JI 200 200 2.5X Vertical Exaggeration 150 150 Upper Sunset Lake 100 100
"'---\,:::::::;=;:::::::::;::::::::;:::::::::;:=;:::::::;::::::::;:::::::::;:::::::;=;:::::::::;::::::::;:::::::::;:=;:::::::;::::::::;:::::::::;:::::::;;:::::::;:::::::::;::::::::;:::::::::;:=;:::::::;::::::::;:::::::::;:::::::;;:::::::;:::::::::;:::::::::;:::::::::;=;:::::::::;:::::::;:::::::::;:=;:::::::;:::::::::;:::::::::;::::::::;=:;::::::::..J-'
0 50 100 i 50 1,0 200 250 l00
,00 l50 400" oiSO !00 5!0 600 500 650 700 750 eoo &SO 900
,00 9!,0 1000 10,0 i1CO t1!0 1200 1250 1300 tl!O 1400 14.50 1500 1550 f600 16$0 1700 17.SO i lOO 1&$0 1$00 ltsO 2000 2050 2100 1050 1200 1350 1500 16,0 1600 1950 2100 1,0 1,0 15X Vertical Exaggeration Wells up to 75' away from the transect
... ... are projected onto the cross sections.
Wells that are >20 ft and less than 75 ft are indicated with an asterisk (*). 130 130 Borings are projected from up to 100 from the transect for stratigraphic interpretation and evaluation. 1201 1 II I~ .............. - * ......i ;J~.... r 120 Legend 110-l I bl II I ~ 110 ____sz_ Potentiometric Surface
-------- - ..............1 r...,___ Well Riser
- Surface Water BWell Screen 100--t I II 11!:1 1 1-100 Lithology
{a Silty/Clayey Saad oo--t 11 1 1 11-.., Surficial Soil - Clay Aquifer - Silt L Sand eo-1 1-eo
- Black Creek Confining Unit D Black Creek Aqu ifer J - l~ Inferred Geologic Contact
. 150 ,,. ... IOO 750 ,00 1050 1200 1350 1500 1050 ,... ,.,. 2100
. Conceptual Site Model Rev. 4 , pg. 11
S North so 100 150 200 2so JOO 350 '°° Site CSM Cross Sections 450 500 550 eoo 650 100 7SO eoo aso too 950 10001oso110011so1200,2501S0013501,001450 1S0015501&0016so110017S01eoo1aso1t001950200020so210021so22002'2so23002l502&00:z,,so25002550260021502100 S' SouUI 2.5X Vertical Exaggeration 200 200 1$0 1$0 100 100 i I I I I I I I I I I I I I I I i
,oo 150 200 250 JOO 3SO 400 4.50 ,oo S50 eoo 6!50 100 no eoo
- to0 950 10001050110011so120012so13001uo1*0014so1500155016Q01&so1100115011001aso19001950200020so210021so220022so230023,024002*502S002Sso2e00aso2100 0 "' 150 300 4SO 11()(1 750 900 1050 1200 1350 1500 1650 1800 1950 2100 2250 2400 2550 2700 150 t
15X Vertical Exaggeration
... Wells up to 75' away from the transect are projected onto the cross sections.
130 Wells that are >20 ft and less than 75 ft are indicated with an asterisk (*). 120 Borings are projected from up to 100 from the transect for stratigraphic interpretation 110 and evaluation. 100 Legend 10
- l. Well Riser
__;sz_ Potentiometric Surface 11111 Surface Water I Well Screen
,. Lithology 1* I Silty/Clayey Sand 80 Surficial Soil { 11111 Clay Aquifer 1111 Silt 50
~ Sand 1111 Black Creek Confining Unit AO
- Black Creek Aquifer 1,0 300 ... 000 7,0 900 10,0 1200
"'"' ISOO
""' 1800 1050 2100 2400 ,.,. V00 Conceptual Site Model Rev. 4 , pg. 12
Site CSM Cross Sections u O SO 1001502002SOJ00350.00450500SS06006!07007!0<<>>M09009S01000 I I I I I I I I I I I I I I I I I I I I I I 11Cl0 I I 1200 I I 1300 I I 1400 I I 1500 I I 1600 I I 1700 I I 1800 I I 1900 I I 2000 I I 211)0 I I 2200 I I 2300 I I 2400 I I 2SOO I I 2600 I I 2700 I I 2800 I I 2900 I I 3000 I I 3100 I I 3200 I I U' Nouh i i South 2.5X Vertical Exaggeration
.-.- ~.>l.~Q~'--'11 Western Storage ""'1*~il~ ~ t tttttM ~~
Area Area
.,.,, g 150
~:? !(!~ ~"':
100 50
.JI I I I I I I I I I I I I Black Creek Aguiler I I I I I I I I I I I I I I a
I
,,soI I 14SOI I I i I I I i
,.,I i I I I I I I I i I I I i I I I i I I I I I I I i I O50~~,oo-,oo~-450500~1!00650700=800=900= 1050 1150 1250 1650 1750 1950 2050 2150 2250 2350 Z,.50 2550 2650 2750 2550 2950 >>50 3150 32:50 150 ,00 450 800 750 900 1050 1,00 1350 1500 1850 1800 ,.so 2*100 2250 2400 2550 2700 2850 ,000 3150 West Lagoon 150-j Western Storage WWTA r-1 50 Area Southern Area 15X Vertical Exaggeration
,.. > s ... .., Storage Area 1*0 Wells up to 75' away from the transect 1:,0 llO are projected onto the cross sections. ,20 ,20 Wells that are >20 ft and less than 75 ft
~~ are indicated with an asterisk (*).
no Borings are projected from up to 100 from
~ '" the transect for stratigraphic interpretation 100 B .~l 100 and evaluation.
oo--l i I~.. WWTA - Wastewater Treatment Area oo -j I I~.. Legend _sz_ Potentiometric Surface f--70 70-j
~ Well Riser I -m Surface Water 60-j Ho I Well Screen Lithology 50-j r'°
{ ~ Silty/Clayey Sand
*<H Ho Surficial Soil 1111 Clay ,o-J I Ho Aquifer 1111 Silt L ~ Sand 20--l I ~
Black Creek Aquifer Ir'° 1111 Black Creek Confining Unit 1O-j 10 1111 Black Creek Aquifer 0 150 ,00 450 800 750 900 1050 1200 1350 1500 1650 1800 1... 2100 2250 2400 2550 2700 2850 ,000 3150
- Inferred Geologic Contact Conceptual Site Model Rev. 4 , pg. 13
Site CSM Block - PCE (2021) Former Oil House (Potential voe Source) Solvent Extraction Area (Potential voe Source) 2.5X Vertical Exaggeration
~ Groundwater Flow Direction Silty/Clayey Sand Sand
- Black Creek Confining Unit EL - Former East Lagoon NL - North Lagoon - Black Creek Aquifer SL - South Lagoon WL 1 - West Lagoon I PCE (Tetrachlorethene) in Groundwater WL2 - West Lagoon II 340 ug/L - - >5 ug/L (Lower)
SAN - Sanitary Lagoon ~ >5 ug/L (Upper)
>5 ug/L
- 1. Surface topography and ditch-driven flow controls PCE Concentrations Upper Lower the upper surficial portion of the PCE Plume. <5 ug/L 1 I
- 2. Preferential basal flow occurs within the lower Well Riser surfical aquifer, but is confined by the dense * >5ug/L Well Screen silt and clay of the Black Creek.
- 3. Western Groundwater Area of Concern source flows toward the floodplain above the Note : October 2021 groundwater results.
Black Creek confining unit. Conceptual Site Model Rev. 4 , pg. 14
Site CSM Block - TCE (2021) Solvent Extraction Area Former Oil House (Potential voe Source) (Potential voe Source) West Lagoon 2 (Potential voe Source) _..., 2.5X Vertical ~ Exaggeration 15 Groundwater Flow Direction Silty/Clayey Sand Sand
- Black Creek Confining Unit EL - Former East Lagoon - Black Creek Aquifer NL - North Lagoon TCE (Trichlorethene) in Groundwater SL - South Lagoon 9.5 ug/L - - >5 ug/L (Lower)
WL 1 - West Lagoon I WL2 - West Lagoon II >5 ug/L (Upper) SAN
- Sanitary Lagoon
>5 ug/L TCE Concentrations Upper Lower
- 4. Surface topography and ditch-driven flow controls <5 ug/L 1 I Well Riser the upper surficial portion of the TCE Plume.
* >5 ug/L
- 5. Upper and lower surficial flows Well Screen follow the same direction , and are confined by the dense silt and clay of the Black Creek. Note: October 2021 groundwater results.
Conceptual Site Model Rev. 4 , pg. 15
Site CSM Block -Uranium (2021) P.~"">' s*( C'-&e
~
Ur3nium Concentr3tions 143 ug/L in Groundw3ter I Upper Surficial Groundwater Well - Upper Sands Black Creak Confining Unit Black Creak Aquifer
- 6. Flow from source areas into uppermost surficial aquifer only and low rate of advectlon and dispersion EL - Former East Lagoon NL - North Lagoon SL - South Lagoon
>30 ug/L in Groundw3tar WL 1 - West Lagoon 1
""" Groundwater Flow Direction A Potential Radioactive Release Sources
~ W3tar Table WL2 - West Lagoon 2 SAN - Sanitary Lagoon
- - >30 pCi/L (Upper)
- Ur3nium in Groundwater Above MCL
\ Uranium in Groundwater Balow MCL Note: October 2021 groundwater results 2.5X Vertical Exaggeration Conceptual Site Model Rev. 4 , pg. 16
Site CSM Block -Sitewide Tc-99 (2021) Leak of Contaminated 2.5X Vertical EL . Former East Lagoon NL . North Lagoon WW piping under URRS Uranyl Nitrate Operations Exaggeration SL - South Lagoon SOLX Area Floor WL 1 - West Lagoon 1 Crack in Cylinder Recert. WL2 - West Lagoon 2 Solvent Extraction Area (SOLX) Bldg. Floor Sump SAN
- Sanitary Lagoon Cylinder Recertification Slowdown So*
100 , So,
*so, Technetium -99 Concentrations 2,500 pCi/L in Groundwater - Clay Black Creek ~ Groundwater Flow Direction
- Tc-99 > 900 pCilL Confining Unit
- ___2. Water Table
>900 pCi/L in Groundwater Potential Tc-99 Release Sources
- Silt Silty/Clayey Sand Sand Black Creek Aquifer IUpper Surficial Groundwater Well Lower Surficial Groundwater Well Tc-99 < 900 pCi/L
- 7. Higher concentrations tend to follow the sitewide groundwater flow toward the floodplain .
Note: October 2021 groundwater results Conceptual Site Model Rev. 4 , pg. 17
Site CSM Block -Nitrate (2021) Scrubber Release 8A
\
Spiking Stations, Uranyl Nitrate Operations & Dock 4 Subfloor Scale Pit UNH Drum Spill West Lagoon 2 Tank T-1149 Groundwater Flow Direction
- Water Table 2.5X Vertical
- Clay - Silt Silty/Clayey Sand Sand Exaggeration
- Black Creek Confining Unit EL
- Former East Lagoon - Black Creek Aquifer NL
- North Lagoon SL
- South Lagoon Nitrate Concentrations WL 1
- West Lagoon 1 550 mg/L in Groundwater WL2
- West Lagoon 2 SAN
- Sanitary Lagoon
>10 mg/L in Groundwater
- 8. Surface topography and ditch-driven flow controls _ Potential NO3 Release Sources the upper surficial portion of the nitrate plume.
- 9. Higher concentrations tend to follow the sitewide groundwater Nitrate Concentrations flow towards the floodplain. <1 O mg/L Surface Water
- 10. Potential contact with Gator Pond * > 10 mg/L Locations
- 11. Potential flow beneath Lower Sunset Lake Conceptual Site Model Rev. 4 , pg. 18 Note: October 2021 groundwater results.
Site CSM Block -Fluoride (2021) EL - Former East Lagoon Spiking Stations & NL - North Lagoon Uranyl Nitrate Operations SL - South Lagoon WL 1 - West Lagoon 1 WL2 - West Lagoon 2 SAN - Sanitary Lagoon
~
So* 100 , Flow of Mill Creek 2.5X Vertical Exaggeration Fluoride Concentrations 14 mg/Lin Groundwater - Clay Black Creek Confining Unit
""° Groundwater Flow Direction 12. Fluoride plume tends to follow the sitewide groundwater
- .......:SZ. Water Table flow toward the Gator Pond and the floodplain .
>4mg/L in Groundwater Potential Fluoride Release Sources
- Silt Silty/Cl:iyey S:ind Sand Black Creek Aquifer I Upper Surficial Groundwater Well
- Fl uon'd e > 4 mg Fluoride < 4 rng/L IL 13. Contact with the Gator Pond.
Note: October 2021 groundwater results. Conceptual Site Model Rev. 4 , pg. 19
Surface Water CSM: Gator Pond (Flow-Through Lake) A. Conceptual Example B. Conceptual Example applied to Gator Pond W-92 W-27 Flow-through lake (from Anderson and Munter, Water Resources Res., v.17, p. 1139-1150, 1981. Copyright by Amer Geophysics Union. Conceptual Site Model Rev. 4 , pg. 20
Surface Water CSM 00 0 M LO LO I ON s Lower Sunset Lake MM I I Kl<K2<K3,K4 ss K3 Upper Zone of the Surficial Aquifer K4 Lower Zone of the Surficial Aquifer Conceptual Site Model Rev. 4 , pg. 21
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