NUREG-0965, Forwards marked-up Copy of Section 3.2 of NUREG-0965, NRC Inventory of Dams, & Corrected Pages for App C & App E
| ML20150D002 | |
| Person / Time | |
|---|---|
| Issue date: | 06/24/1988 |
| From: | Fliegel M NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Bagchi G NRC |
| References | |
| REF-WM-1, RTR-NUREG-0965, RTR-NUREG-965 NUDOCS 8807130253 | |
| Download: ML20150D002 (21) | |
Text
.
..~<,: - .. . - ..
-l ,
x
- 1, , * .,
.88090 DS 6/24
--1:- .
JUN 2.41988 -
ilEMORANDUM.FOR: Goutam Bagchi. '
NRC. Dam Safety Officer FROM: Myron Fliegel, Section Leader Uranium Recovery-Section Division of Low-Level Waste Management' and Decommissioning
SUBJECT:
STATUS OF MILL TAILINGS DAliS We have reviewed.Section 3.2 of NUREG 0965, "NRC -Inventory .of Dams." We have enclosed a marked-up copy of this section along with corrected pages for Appendix C and Appendix-E.
If you have any questions on our response, please contact Dennis Sollenberger at-492-0579.
$i Myron Fliegel, Section Leader Uranium Recovery. Section Division of Low-Level Waste Management and Decommissioning
Enclosure:
As stated cc: G. Staley DISTRIBUTION:
w&-C .; i;Ib7 NMSS r/f LLOB r/f 4 DSo11enberger, LLOB w MFliegel, LLOBd Plohaus, LLOBw JSurmeier, LLTB MBell, LLRB' JGreeves, LLWM MKnapp, LLWM DSmith, URF0 u) 0FC: LLOB p :LLOB : : :
NAME:DSollenberger/dfw :f-IFliegc1 : : :
DATE: 6 / 184'8 8 :b/2.$88 : : :
OFFICIAL RECORD COPY kk khj880624 s t
4a.2 goc . /[ p/ Mp
Montgomery Lock and Dam (FERC), 3 miles upstreani from Beaver Valley Watts Bar Dam (TVA), 2 miles upstream from Watts Bar All of these dams are regulated by other Federal agencies (FERC or TVA) and therefore are not included in the listing of FGOS dams in the conclusion of this report. In addition, it appears that any other offsite dams upstream from nuclear power plants are not within NRC purview because they are either too small or too far removed from a nuclear power plant to pose a flooding hazard that would result in a radiological risk to the public health and safety.
3.2 Uranium Mill Tailings Dams The uranium mill tailings dams that are licensed by HRC are as follows:
Uranium Mill State Number of Dams Comments Seac Creek Wyec;ing i Licen:ce 4~; :tigating ON.
-raisia; cf de
' federel ?;;ricar oartners WyeM ag ? u e mere r313e3 pl3nned - p %,
--- C:: u4313 gycy:ng ; g; 7; 7;$;;; p;;nn;g p %
ui ghland Wyoming N w M c.co 1 "O = r raf::: -1 5 eepas a prodo :nned b.
homedal<e) Cwen ds I s - OPc4 3 Lisbon Utah 1 a&ld eN Dam is one of a series -op % Lucky "e Gas Hills Wyoming 1 One more raise planned S k S y Moab Utah 1 Seepage problems - S h dy (Pathfinder Shirley Basin Wyoming 1 No more raises planned ($ ui virw MeoCA Lke N M *Mco I s , .Fd 6 *-f ' Ue'5 ' E+5 M k
-(htroteics) Shirley Bacir Wyom ng i 1 u en.
Shootering Canyon Utah 1 One more raise planned-5+aday Split Rock Wyomkg 1 OneOrc raise planned Sweetwater Wyoming 1 None - sbdb y White Mesa Utah 1 p g m is one au m ecco (1ch@ 9 of a series-O eda The listing shows that there are K uranium mill tail . s located at X , uranium mills that are licensed by NRC. They are located in Wyoming ( dams) ' and utah (4 dams). De-TW Edg or ]gniumHill-k-Seethnakatawu ot included in the study because ' n Tonger operating and %u7ider ing k reclamation. In cases where dams were constructed in a series, so at flow from an upstream failure would be retained by a downstream dam, o the further-mostdownstreamdamcurrentlybeingugigdy*asbeenincluded, his is the case at the Lisbon Mine and Mill, the . , 6asHillsMil the Pathfinder .i Shirley Basin Hill, and at the White Mesa Uraniuin Hill. ' M T L~ ace. to ev.all +ad t %s claws O j 1 5 i
1 Appendix C provides the principal design details of each of the uranium mill tailings dams listed above, such as dam height and length, reservoir capacity, surface area, inspection programs, etc. It also provides a typical cross-section of each dam. All sources of information are noted at the bottom of the forms; most of the information was obtained from the latest consultant's con-struction reports. Missing information was not available in the documents reviewed. I All of these dams are included in the listing of FGDS dams in the conclusion of this renort. Although uranium mill tailings dams in Agreement Statesills have not been included in Agreement States in this inventor i where there m2y"y, Appendix b'e--tailings dams.
"' "ion-was E identifies
'~ e nfr^d the uran um m % tha m -m;;=d*
~
~ ' ' n 5t "* "- M a ry = - " W:" ('~W.
4 IDENTIFICATION OF FGOS DAMS The inventory shows that there are 51 dams that form 33 impoundments associated with nuclear power plant sites in the United States, as described in Section 3.1 of this report. Dams for which the Federal Guidelines may be applicable and for which the NRC might be considered "responsible" in terms of the Federal Guidelines (FGOS dams) were identified by eliminating those dams that are judged to not be in this category, i.e., (1) dams that are submerged or isolate an arm of a principal impoundment because their failure would not pose a flood hazard (the principal dam would be the FGOS-designated dam) 4 (2) dams that are regulated by another Federal agency (Corps of Engineers, Federal Energy Regulatory Commission, or Tennessee Valley Authority) because these agencies already have regulatory authority for Federal Guidelines aspects of these dams (3) dams that are too small or too far removed from a nuclear power plant site to pose a flooding hazard to 4 plant because these dams are not within NRC regulatory authority i The NRC inventory of 51 dams (33 impoundments) associated with nuclear power plant sites contains 20 FG05 dams (14 impoundments) as follows (Nuclear Power
.' Plant Name, State, Dam Name):
Onsite, seismic Category I dams (5 dams, 4 impoundments): Farley (Ala.) - Category I Holding Pond Embankment l McGuire (N.C.) - Standby Nuclear Service Water Pond Dam l North Anna (2 dams) (Va.) - Service Water Dikes 1 and 2 Harris ,(N.C.) - Main Dam l l Onsite dams that are not seismic Category I (15 dams, 10 impoundments): Braidwood (Ill.) - Cooling Pond Embankment Clinton (Ill.) - Main Dam 6 1
" J Appendix C Principal Design Features of Uranium Mill Tailings Dams Located in Non-Agreement States s N <e. G % b W1.'Il .
AO:r,re:', Ur:r.ium Mill- vurce L bcosia L & . R. oab Uranium Hill Jed . A=ari e= a P:rtr, ara Ur:r.ier un u hirley Basin Uranium Mill N 4e Shootiring Canyon Uranium Hill t-- (r.dco' LisbonOes uighlandHiiis Urmic Ifr2nie. uj fine and Mill 33 Mill Sp; jt n;;g vir3nt= 31 3_ ' Sweetwater Uranium Mill F>&Je%%as Hills Uranium Mill White Mesa Uranium Mill 0 i s l l C-1
Il
' gas w AL6).
Principal Design Features of _ ge Uranium Mill Tailings Dams Date -Julu -F)r
- 1. Licensee (0wner) 90cky M0unt
- En0rgy CO- h ear Creek Uranium Co. h
- 2. Mill Name Bear Creek Uranium Mill Dam Name
- 3. NRC Docket # 40-8452
- 4. Location: State Wyomin9 County Converse
- 5. Dam Characteristics:
Type Earthfill Crest Width 20' Height 60' Slopes 2:1, 3 d Length 1500' Freeboard 10.0' Present top elev. 5160 Proposed final elev.
. 12*--.
"W cu3 t o u" 5" 8 *
,d,,c.
, ,n ,a Typical Cross-Section y', - - - - - -{,',.# ,
y T.
' E .
wets. ,m ,...'s[ 's sm
< CLAT (M4AW"*
' nsp,gger c.es \ uw
- 6. Hydrology:
ensa y q { Surface area 26 acres Storage: normal 2770 acre-ft max . 3570 acre-ft
- 7. Year construction started stage 1, 1977 completed staga 2, 1981 8.. Regular inspection Daily inspection for any release of radioactive materials.
- 9. References Chen and Associates Construction Reports Feb. 2,1981 and Aoril 21, 1978.
- 10. Comments Before the addition. slopes were 3:1 and 2.5:1, they now are 2:1. __
Licensee will raise the dam to 5180' in 1983. _ _ Prepared by C-2
s
,Y_. )
Q& 1 Principal Otsign Features of K, Uranium Mill Tailings Dams Jah i%( m eet c_w hu.cf e4qh c.Date ,,
- 1. Licensee (0wn %defel " CiO2 Putnei3-
- 2. Mill flame Fed American Partners Uranium Mill Dam Name Tailings Dam No.1
- 3. NRC Docket g 40-4492
- 4. Location: State Wyoming County Fremont S. Dam Characteristics:
Type Homogenous earthfill Crest Width 20' Height 49' Slopes 3:1 Length 980' Freeboard 5.0' Prasent top elev. 6445 Proposed final elev. 6445 ursnm g,,cw Typical Cross-Section waur N$ $'
,=:a 9st fNtoAs '
t SH6 A RK H C64 T" 3
- 6. Hydrolcgy: ' "1-l Surface area 23 acres i Storage: normal max. 419.2 acre-ft
- 7. Year construction started completed 1978 l
- 8. Regular inspection Daily visual inspection (documented)
- 9. References F. M. Fox and Associates "Proposed Extensions of Tailings Dams 1 a 2" l May G,1978 l 10. Coments 'This pond is used for storing fluids which are pumped from tailings _
pond flo. 2 (see next page). No more raises are planned. I Prepared by l C-3 1 L
r - D y Principal Design Features of,. Uranium Mill Tallings Dams Date N 1. hmeticar Ol e { e.ac Q
- Licensee (Owner) _Fede--! trical Partr,cr-d
- 2. Mill Name es am. 4,=a D=r+- -s Branium Mill Dam Name Tailinos Dam No. 2
- 3. NRC Docket # an.daos
- 4. Location: State wvomina County Fremont
- 5. Dam Characteristics:
Type __Hnmoconnus narthfill Crest Width 20' Height 70' Slopes 3:1 Length Freeboard 5.0* Present top elev. M1n Proposed final elev. 6510'
" ' = ,,
ursraraH oowooracAM wmm rAnum Typical Cross-Section t i 3 ) raevreus suswensar (c. eaero uerariu.) ,
- 6. Hydrology:
Surface area 70 acres Storage: normal max .
- 7. Year construction started completed lo7A
- 8. ' Regular inspection Daily visual inspection (documented)
- 9. References F. M. Fnv a n ri Acent 4a toe . "Dovieinn nf neefnn fnr Ta414nne nam At"
.in1v l o : 107A Fluids are decanted to pond #1. No more raises are planned.
- 10. Coments Prepared by
i s p h M- .. . (
!S)P j S8 Principal Design Features of /
Uranium fiill Tailings Dams j Date Julv-t982~
- 1. Licensee (0wner) Union Carbide Corp.
- 2. Mill Name Gas Hills Uranium Mill Dam Name
- 3. NRC Docket # 40-299
- 4. Location: State Wyoming County Natrona
- 5. Dam Characteristics:
Type Zoned earthfill Crest Width 12' Height 20 Slopes 3:1 upstream, 2:1 downstream Length Freeboard 5.0' Present top elev. 7nnqi Proposed final elev. 7003'
- it' >
i, -, #
/ A_ m .gu m uPWREAM Typical Cross-Section S oy d syn g AH
/ c.o s e v.ru
[i t'> QS t.5 A 'f i
'A
- 6. Hydrology: ' " 5' Surface area 24 acres Storage: normal 300 acre-ft max . 420 acre-ft
- 7. Year construction started completed 1979
- 8. Regular inspection Daily weekly and monthly documented insonttinne.
- 9. References Final Environmental Statement (NRC) July 1980. Dames and Moore Report Sept. 10, 1979.
- 10. Comments This pond is part of an underground disposal system and contains only liquids. One other disposal site is being reclaimed at present. All future disposal will be underground. Open pipe spillway at elev. 6998.
Prepared by C-5
8 MAW.
- ' ' Principal Design Features of ,-
[ Uranium Mill Tailings Dams Date M 2'
- 1. Licensee (0wner) Exxon Minerals Corps.
- 2. Mill Name Hiabland Uranium Mill Dam Name
- 3. NRC Docket # 40-8102
- 4. Location: State Wyomina County Converse
- 5. Dam Characteristics:
Type Earthfill Crest Width 20' Height 125' Slopes 2:1 upstream, 2.5:1 downstream e length Freeboard Present top elev. 5250' Proposed final elev. 5250'
- so' ; n c,*
Typical Cross-Section upsta ux D 'f ""*
,'r
~
\ L TAMt5
'7
..s y OggotNAL bArt fill j .p sts \
N s ALL
/ C set i \
- 6. Hydrology:
/ \ '. \
' fizr'
\ I a r.ar w m Surface area Storage: normal max . 920 acre-ft
- 7. Year construction started completed 1981
- 8. Regular inspection I
- 9. References Dames and Moore Report "Design of Centerline Constructed Height Increases." Oct 26, 1976
- 10. Coments Phase 2 of raising was completed in 1981 at elev. 5250'. No more raises are planned.
Prepared by C-6
, , Principal Otsign Features of Uranium Hill Tailings Dams
& IR88 Date __'a , w ,
- 1. Licensee (Owner) [h f7/M (e, .
- 2. Mill Name C. y- fYi M Dam Name O -_
- 3. NRC Docket # 40-S903
- 4. Location: State /V e Ibxico County Ci 06) cL,
- 5. Dam Characteristics:
Type C [f d 0 6 Vd i b b Crest Width 0 He ight Tf-9 0 $N' . V Slopes 2.T ll Length Present top elev. Freeboard 6'[ . Proposed final elev. Typical Cross-Section
- 6. Hydrology:
Surface area ! 7 0__ CLc.s . Storage: normal max .
- 7. Year construction started )457s ccrnpleted
- 8. Regular inspection _ b db Aul ^
V 4
- 9. References _ __
- 10. Comnents CdM mw eM '
a &n . a t m %. 4 & = & DwLad . U Prepared by
., Principal Design Features of Uranium itill Tailings Dams Q (_
Oate Ju!y 10a -
- 1. Licensee (0wner) Rio Algom Corp
- 2. Mill Name Lisbon Mine and Mill Dam Name lower Pond Dam
- 3. NRC Occket # ,_ 40-8084
- 4. Location: State Utah County San Juan
- 5. Dam Characteristics:
Type Homogenous earthfill Crest Width 15' Height 75' Slopes 1.5:1 uostraam. 2. 5 1 domtream Length Freeboard 12.0' Present top elev. 6661' _ Proposed final elev, 6671'
- : c u, r' UfSTilf Ad peiun/ 5M C Ari Typical Cross-Section ' '
,f rHacAv. u p's L L 4 .. _ ....
9RECmt e.,trtwv.Mc ur %- ,
"(. f"-
[Trtes41.MLL) f
- 6. Hydrology: ,
Surf ace area es aa,m Storage: normal max . 1pnn u ra.re
- 7. Year ccastruction started completed 1oni
,8 . Regular inspection Onlly vis ual 'asocede a- ,
- 9. References Dames and Moore Reoort "Prnonead Raita nf f ~ar 7 = i 1 4 a n,e_ n -,*
March 17,1981.
- 10. Coments ' A 55' upper cond dam also exists and would flow intn tha Inwar n nn e' if it failed. Dam was raised by the downstraam mathnd. No mnra raieae are planned.
Prepared by C-t
Principal Design Features of . Uranium Hill Tailings Dams g Date _ m i u r
- 1. Licensee (0wner) Qtaiviro M ntnq Cn.
0
- 2. Mill Name Ombcosrq Lo /q M .- l l Oam Name
- 3. NRC Occket ! NO- F9of
- 4. Location: State New Mextco County Mc[tn}mv
- 5. Dam Characteristics:
Type b4 0 [d ad
- rest Width He ight OS - 9 0 .44 Slopes .2.S'f/
Length Present top elev.
, Freeboard __
/6 [. _
Proposed final elev. . Typical Cross-Section
- 6. Hydrology:
Surface area 3 foI e . Storage: normal max .
- 7. Year construction started i ts- 8 completed
- 8. Regular inspection _O' v vc % {7Wsoec /cm e f
}
- 9. References
- 10. Coments /J i
T Cmilw-lca J b d ri M M , - Prepared by
.c - ,'* a j
Principal Design Features of, Uranium Hill Tailings Dams Ob Date ,1w
- 1. Licensee (0wner) Pathfinder Mines Corp.
- 2. Mill Name'Lu Gas' Hills Uranium Mill Dam Name #4 Dam . _ .
- 3. IIRC Oocket # 40-2259
- 4. Location: State Wyoming County Fremont
- 5. Dam Characteristics:
Type Zoned earthfill Crest Width 76' Height 125' M*ve FN,62Ye6e ens gudlopes 3:1 heb 2 5 : i 9-4 Length 2200' Freeboard 6.0' Dem *=.ww0 Present top elev. 6243'
~
Proposed final elev. 6256' M ' G N 2' untscArt 5 H alt. bowd5 N A'1
/,/
g
~ r n.' u "
Typical Cross-Section z \'
. et \ \
y TAP 4 f ffEhe45 I4 \
] ,f l, EH 6AMKLMf 's \ \ s
.- , es e sua r i 5 ' tmi
, , ( *c u"*w *) g J 4 '. 8 / \ " \
6., Hydrology: V L;;;/ 44 6 - - Surface area 145 v. (Et.sm) Storage: normal 10x "A+61 "'8)e he 461 W) max. 4,000 acre-ft (elev. 6243)
- 7. Year construction started 1961 0 980 '5') completed elev 6243', 1981
- 8. Regular inspection Weekly by the owner, monthly by a qualified mine engineer.
Daily visual inspections.
- 9. References Chen and Associates Soil and Foundation Investigation April 1978.
"Staged Construction #4" June 12, 1981.
- 10. Coments P'roposed final elev. is 6256' msl. Dams are situated in series at this mill, with plans for a total of 5 dams.
C-8 _m
. . 1 Principal Design Features of @[C Uranium Hill Tailings Dams Date dul vtT82
- 1. Licensee (Owner) Atlas Minerals
- 2. Mill Name Moab Uranium Mill Dam Name
- 3. NRC Docket # 40-3453
- 4. Location: State Utah County Grand
- 5. Dam Characteristics:
Type Homogenous earthfill Crest Width 20' Height Slopes 2.S' i l i24:1 Length 7600' Freeboard 6.0' Present top elev. 4oss Proposed final elev. anw Jon' g u' ; M' SI ew 1 i l Typical Cross Section , [, , , II, 3-d ht' ', Hect' 'N r , rec e s A (ntAn stratat g g arW, goat 96+ WAST fuvrows
- 6. Hydrology: w e m W 8NT c- u- ,
Surface area Storage: normal max .
- 7. ' Year construction started ccxnpleted 1982 t
- 8. Regular inspection Monthly piezometer readings at 28 points. Daily visual and quarterly documented inspections, annual technical evaluation.
- 9. References Dames and Moore Report of Stability Analysis June 4, 1981.
- 10. Conrnents Bordered by the Colorado River. Three seepage areas have been observed; one on Northern, Western and Southern embankments. Dam raised by upstream method on N. S. E sides and by downstream method on west side.
Prepared by
- q
- l
-~
Principal Design Features of, g4 Uranium Mill Tailings Dams Date _ July-1987'
- 1. Pathfinder Mines Corp.
Licensee (Owner)
- 2. Mill Name Shirley Basin Uranium Mill Dam Name #5 Dam
- 3. NRC Cocket # 40-6622
- 4. Location: State Wyoming County Carbon
- 5. Dam Characteristics:
Type Homogenous earthfill Crest Width 20' Height 60' Slopes 2:1 uostream. 2.5:1 downstream Length 6,000' Freeboard t si Present top elev. 7110' Proposed final elev. 7110'
. 'f li o '
uP stuAn i II1"t touseH Typical Cross-Section f. - - - s 3 8 fHASE 2 s ;f. J. (cuici saf; s,. . 94 >w./
-.s s j g.,
PHAsc r N ' : , . ., (cwsv 5Ae) N v s.q.
. s w.A 7oco,
- 6. Hydrology: ic.we rawa Surface area Storage: normal max . _, 3300 acre-ft
- 7. ~ Year construction started 1975 completed 1977
- 8. Regular inspection Daily visual insoections. weekly water levels and mnninnant maaturaments. and monthly oiernmater water lovalt-
- 9. References Dames and feore Report "Redesign Final Stage flo. 5 Tailings Dam", Dec 3,1976.
l
- 10. Connents Dam built by downstream method. Where height of dam is less than 30', no chimney drain has been installed. Dams are situated in series at this mill.
Prepared by C-10 i
,,-v_,.. . ---,,.m. . , _ . . - ~ ~ _ , , , , ,_ - ---_ _._ _ ,_ ,_.., __,...--,_ ,,,,,m,-- - - , - - - - - - - _ _ . ~
r , f 6(yf
- Principal Design Features of 1 ( Uranium Mill Tailings Dams Date Jul #
Y
- 1. Licensee (0wner) Petrotomics Co.
- 2. Mill Name Shirley Basin Uranium Mill Dam Name _.
- 3. NRC Oocket # 40-6659
- 4. Location: 5 tate Wyoming County Carbon
- 5. Dam Characteristics:
Type Homogenous earthfill 50' Crest Width Height 75' Slopes 2.5:1 Length 6,900' Freeboard 12' Prasent top elev. 7100' Proposed final elev. 2 ; 71 . ' Typical Cross-Section
#$H GA W wu mun
- ' I F i' t. '
2.f M
- m. . . ,
asno$ %, go m e<; tnSuuteT % sona)
's
- 6. Hyd ology:
_ tce um. T [/ Surface area , 160 acres Storage: normal max .
- 7. Year construction started 1963 completed 1980
- 8. Regular inspection As per Reg. Guide 3.11.
l
- 9. References Chen and Associates Construction Report and Drawings, Jan. 16, 1980.
- 10. Coments Do not know if future raises are planned.
i l Prepared by l C-11 l L ..
Principal Design Features of , Vranium Mill Tailings Dams Date y us;-
- 1. Licensee (Owner) plateau poinnrces Inc.
k 2. Mill Name shnntiring canynn tiraninm Mill _ Oam Name
- 3. NRC Docket i an.ngon
- 4. Location: State tita h County __ na ,.n o i a
- 5. Dan Characteristics:
Type 7ened earthrill Crest Width Stage I - 80' Stage II - 20' Height a s '(shv I), us'(st.se 10 Slopec _ , _ 93 Length Frecbc.. d _ l3' _ Present top elev. 4433' Proposed fir.al elev. 4466' (Stage II) so' I d $(N. $fy I u.psracw / q a ma.a_n
' Typical Cross-Section ~
' 'e sws 2
, 4 ' sl ouveu c.ew c5 w as > ^Y se m ess '
e utss 5 GAAML W' -
- 6. Hydrology: - -- -
((O Surface area 68 acres (Drainage area - 222 acres) Storage: normal max. at elev. 4466', 2800 acre ft
- 7. Year construction started completed 1980
- 8. Regular inspection Visual inspection every work shift
- 9. References Weodward-Clyde Stage I Final Design report May 1979.
- 10. Coments Dam to be constructed in two stages, stage I to eley, 4433' aid stage 2 to elev. 4466'. Tailings will not be placed against the dam until stage II. heins s*16 E. P'"*~** fad sI*P. medaies wiii de %du.a.
Prepared by C42 l i
Principal Design Features of , ( Uranium Mill Tailings Dams Oate Ju l l
- 1. Licensee (Owner) Western Nuclear Inc.
- 2. Mill Name solit Rock Uranium Mill Dam Name
- 3. NRC Docket # 40-1162 Location: State Wyoming County Fremont 4.
- 5. Dam Characteristics:
Type Earthfill Crest Width Height 50' Slopes 5:1 upstream, 3.1, downstream Length Freebcard 3-5' _ Present top elev. 6410' Proposed final elev. 6444' f)(10' pas Typical Cross-Section p d '^ # " # " M co sf ,
' 3
- w sumeurs g,,
- 6. Hydrology:
Surface area 6 6 Storage: normal 225 x 10 ft 3 (el8V: max . 300 x 10 ft3(elev.6444) u,1v i
- 7. Year construction started completed __
B. Regular inspection 7*W *ad &*rhd3 doc *eni'd i"5Feebs ; annva.1 1ed aical evatv.4,'.n .
- 9. References D' Appolonia Construction Report, Feb.1980 4
- 10. Connents Dam raised bv conterline method esino coarser arained tailinas fnr fill. Final emica (to slav. Maaal attimated tn he in 1990.
Prepared by C-13
'. Principal Design Features of Uranium Mill Tailings Dams Date N 1.
Minerals Exploration Co. Licensee (0wner)
- 2. Mill Name Sweetwater Uranium Mill Dam Name
- 3. NRC Docket # 40-8584
- 4. Location: State WY O*I"9 County Sweetwater
- 5. Dam Characteristics:
Type Zoned earthfill O' Crest Width Height 50' Slopes 2:1 P Length 6,300' permeter 6Mo'n o=') Freeboard 5.0' Present top elev. 6680 Proposed final elev, Y gg' urgAM :
, *J o W M T'W E A P1 Typical Cross-Section n,co. A
- c. o. N Emm pn l,sim sm g%:
i 3 >. w sitt s j mi
- are rr rtw.a
- 6. Hydrology:
Surface area 60 acres Storage: normal 2,000 acre-ft max . 2,500 acre-ft
- 7. ' Year construction started 1977 ,
completed 1977 8 ., Regular inspection Quarterly piezomrser readings and requiar visual inspection fnr spacace. crackino etc. Full annual insoection.
- 9. References Dames and .'iocre Recort "Desian of Tailinas Retention Basin".
March 16. 1977
- 10. Coments The bench on uostream side is for placement of tailings pipe and will eventually be covered. Ett%2 tad lifa- ' Jaa, b;Or: i is filled with ,
teil'r;; i; = rr. __ Prepared by
. Principal Design Features of Uranium Hill Tailings Dams' g, Date July-1982 d rn ed c o M k e eds
- 1. Licensee (Owner) Eaemy rue!r uuc'er Mc.
- 2. Mill Name White Mesa Uranium Mill Dam Name Cell 3 dike
- 3. NRC Docket # 40-8681
- 4. Location: State Utah _
County San Juan
- 5. Dam Characteristics:
Type Homogenous earthfill Crest Width 20' Height 42' Slopes 3:1 Length 2,500 i Freeboard 5,0' Present top elev. 5610 Proposed final elev. 5610
- 1o' .
(4to' (t/SfRCAN
~
p c,M sTitG#1 Typical Cross-Section upgn.3 EA Ar u st.' i 8 3 Exca vated (gy;
- 6. Hydrology: rJ,/,;,p F.,/ fyg, Surface area each ceu to oc t. Go a c .
Storage: normal max .
- 7. Year construction started 1978 completed _1979 ,
- 8. Regular inspection naily mnnthly.and nnarterly dncumented intnpetionr. _
Annual technical evaluation.
- 9. References D' Appolonia Enaineers Reoort. Tailinat Manan mant 9yetam.
. luna 1970.
- 10. Coments Tailinas are deoosited in cells for-ed by successive downstream emba nkment s . Cell 1 (nostraami it used for avannratinnt call ? it hainn filladt Cell 3 dike is a safety dike to retain soille fenm epl1 7. A total of 5 calls is I planned. Dams do have spillways. P'* #
C-15
)
.., k . !
E Y 3 I) e i Uranium Mills Located in Agreement States State Contact Uranium Hill Owner / Mill Name I w. Colorado Nr. Albert J. Hay 10, Director 1. Cotter Corporation / Radiation & Hazardous Waste Canyon City Mill Control Division Office of Health Protection 2. "es ;tch: Mining C:./ Dept. of Public Health .J itet, "ill 4210 East lith Ave. Denver, Colorado 80220 3. UMen 0:rtid: Co- ./- , (3033020-0000 Jr:":r Mill - deco hsto*' "3 , 31-7470 )-;. 62'; '
.# %..%had Ocarw'
^ ":: Mexisu '
. "':x: T:::. Chie< 1. a= ;o,,Je co./ ;
Dedi:tten PMt :tica Sur :u Biuwwater tiill _Envir;n.;ntal bprev&,mit. Civ. - P.O. Cea 966 ? Hee:tyle tiinlng 00./ it 4u h-ra, new nexiuv 57504 Gran n Miii 50;) 577-5271 st. 279
- 3. Mer- ":C:: lluclear Ce p./ -
_.55 cosie Leke tiill - 3/Uwfw*dco ('e.3 b-gdsked L Schie-Reserve 4rf 14J l P(A% A g r*s4y ho _ L 3;p Mj j] m
#C" "> -United ik:!et- Corp./-
4 4 M d a e v. = al % ~ ch>,r 5 _ o~+ M411 m m A+6ac A 4 W - Mr. David K. Lacker, Chief Texas 1. Chevron Resources Co./
. Bureau of Radiation Control Panna Maria Mill Texas Dept. of Health 1100 West 49th Street 1 -0:ntirental Oil, Pi;nt:r -
Austin, Texas 78756 -3 f fi A""c!::r/C: wf:t: ""' (512)835-7000 L dece o ;%:or,- Washington - Mr:. ":n y nar, tper"iser 1. Dawn Mining Co./ 7 ..:dt:::t!"e w e t:ri;is ~ Ford Mill Dept. of Social & Healtt.
, Services 2. Western Nuclear Inc./
Mail Stop LO-11 Shemood Mill Olympia, Washington 98504 (206) 753-3459 l m r. T e m s h o g ,p; m4 e ! o&c. o f Go.ch J ,,4 P,ot.&o on i -E-2 _ _ _ _ _ _ . . _ _ _ _ _ _ _ _ . _ . _ _ _ _ __}}