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GWI-WU-01 8 GPM GWI-UP1-01 15 GPM GWI-UP1 -02 15 GPM GWI-UP1-03 7 GPM GWI-UP1 -04 7 GPM GWI-UP2-01 35 GPM GWI-UP2-04 21 GPM GWI-UP2-02 5 GPM GWI-UP2-03 5 GPM WA Extraction Rates GETR-WU-01 4 GPM GETR-WU-02 8 GPM GE-WU-01 5 GPM GE-WAA-01 25 GPM GE-WAA-02 30 GPM GE-WAA-03 24 GPM GE-WAA-04 20 GPM GE-WAA-05 10 GPM GE-WAA-06 13 GPM GE-WAA-07 13 GPM GE-WAA-08 13 GPM GE-WAA-09 13 GPM GE-WAA-10 13 GPM GE-WAA-11 14 GPM GE-WAA-12 13 GPM GE-WAA-13 12 GPM GE-WAA-14 10 GPM GE-WAA-15 10 GPM 2096000 WESTERN AREA FORWARD PARTICLE TRACKING CIMARRON SITE, OKLAHOMA
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environmental properties managerient _LC Legend EXTRACTION WELL INJECTION WELL
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MONITORING WELL IN TRANSITION ZONE MONITORING WELL IN ALLUVIUM
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MONITORING WELL IN SANDSTONE C REVERSE PARTICLE TRACKING TRAVEL PATH REVERSE PARTICLE TRACKING ARROW GROUNDWATER EXTRACTION TRENCH TREATED WATER INJECTION TRENCH Notes:
- 1) Particle travel path arrows indicate distance traveled over 60 days.
0 210 420 COORDINATES:
(NAD 83) STATE PLANE OKLAHOMA NORTH FEET 840 Feet DATE:
MAP PRODUCED* 9/7/2018 2096000 N
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2094900 2095000 2095100 2095200 2095300 2095400 2095300 2095400 2095500 2095600 BA 1 Injection Rates:
GWI-BA1-01 10 GPM GWI-BA1-02 4 GPM GWI-BA1-03 4 GPM BA 1 Extraction Rates GETR-BA1-01 7 GPM GETR-BA1-02 7 GPM GE-BA1-02 24 GPM GE-BA 1-03 18 GPM GE-BA 1-04 24 GPM GE-BA1-05 0 GPM GE-BA 1-06 0 GPM GE-BA1-07 0 GPM GE-BA1-08 10 GPM GE-BA1-09 10 GPM 2095500 2095600 2095700 2095800 2095900 2096000 Notes:
- 1) Particle travel path arrows indicate distance traveled over 60 days.
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(NAD 83) STATE PLANE OKLAHOMA NORTH FEET MAP PRODUCED - 7/25/2018 BURIAL AREA #1 FORWARD PARTICLE TRACKING CIMARRON SITE, OKLAHOMA
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.6 - Particle Tracking Figures: Stagnation Zone Analysis
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I Service Layer Credits: Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographies, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community FIGURE 8-1 WESTERN AREA FORWARD PARTICLE TRACKING - STAGNATION ZONE ANALYSIS CIMARRON SITE, OKLAHOMA
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-- STAGNATION ZONE PARTICLE TRAVEL PATH Notes:
- 1) The distance between arrows represents the distance the particle travels in 60 days.
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100 200 Feet (NAO ~3) STATE PLANE U I\\LAH U M I, NUH I H r l::I:: I N
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- PARTICLE ADDED FOR STAGNATION ZONE ANALYSIS
-- STAGNATION ZONE PARTICLE TRAVEL PATH Notes:
- 1) The distance between arrows represents the distance the particle travels in 60 days.
0 50 100 COORDINATES :
(NAD 63) STATE f'LANt: U I\\LAHUMA NU H I H Hcl:: I 200 Feet I
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MAP PRODUCED - 8/2812018 N A
.2 - Technical Memorandum: Input Parameters for Updated Remediation Duration Estimates
Memorandum Document No.: BMCD-GWREMED-TM002 Revision: A Date:
September 10, 2018 To:
Jeff Lux From:
John Hesemann BURNS ~
!:DONNELL
Subject:
Input Parameters for Remediation Duration Estimates EPM and Bums & McDonnell need to estimate the duration of both groundwater treatment and remediation at the Cimarron Site to develop a schedule and cost estimate for Revision 1 of the Decommissioning Plan (D. Plan-Rev. 1). The duration of treatment and remediation will vary by "Remediation Area". Remediation Areas are distinct areas which will be addressed by a combination of remediation components unique to each area. Bums & McDonnell developed spreadsheets to calculate the remediation timeframe required to achieve the contaminant and area-specific groundwater remediation goals at the Cimarron Site. The Remediation Duration Estimates spreadsheets are contained within an MS Excel workbook entitled Remediation Duration Estimates_ Rev. B (09-10-18).xlsx.
The goals of the remediation duration calculations are to estimate the following:
Remediation timeframe to the derived concentration goal level (DCGL) for uranium in Burial Area 1 (BAI) within the transition zone (TZ) and Sandstone B (SSB) formations (i.e., BAl-A).
Remediation timeframe to achieve the DCGL and the maximum contaminant level (MCL) for uranium in BAl alluvium (i.e., BAl-B and BAl-C).
Remediation timeframe to achieve the DCGL and MCL for uranium in that portion of the Western Alluvial Area (W AA) with uranium concentrations exceeding the DCGL (W AA U>DCGL), as well as the 1206 NORTH area Remediation timeframe to achieve the DCGL the Western Upland Burial Area 3 (WU-BA3) area.
Remediation timeframe to achieve the MCL for uranium in the W AA-EAST, W AA-WEST, WU Uranium Pond #1 (WU-UPI), WU Uranium Pond #2 Sandstone A (WU-UP2-SSA), WU-1348, and WU Process Building Area (WU-PBA) areas.
Remediation timeframe to achieve site-specific nitrate remediation goals in the W AA U>DCGL, WAA-EAST, WU-UPl, WU-UP2-SSA, 1206-NORTH, WU-BA3, and WU-PBA areas.
The estimation of remediation timeframes was considered unnecessary for the following areas:
WU-UP2 Sandstone B (SSB): this remediation area consists of a relatively isolated zone of uranium, nitrate, fluoride impact that will be addressed by two injection wells (GWI-
Memorandum (cont,d)
September 10, 2018 BURNS ~
!:DONNELL UP-02 and 03) screened within SSB. Uranium concentrations in this area exceed the MCL but are below the DCGL. Fluoride concentrations exceed the MCL and nitrate concentrations exceed the site-specific nitrate remediation goal. Calculation of an estimated remediation timeframe for this area in unnecessary since the remediation goals are expected to be achieved long before remediation of the WU-UP2-SSA formation has concluded.
W AA-BLUFF: the extraction wells installed within this area (GE-W AA-06 through 13) will recover W AA groundwater impacted with uranium, nitrate and fluoride, as well as recharge driven by water injection within the WU-UPI and WU-UP2-SSA/SSB areas.
With exception of the far western segment of this area, uranium concentrations within the alluvium are below the MCL. Fluoride concentrations within the alluvium exceed the MCL in the western portion of this area and nitrate concentrations exceed the site-specific nitrate remediation goal across the majority of the alluvium within the combined capture zone of GE-W AA-06 through 13. Since achievement of the uranium, nitrate, and fluoride remediation goals within the WAA-BLUFF area is expected to occur long before remediation of the WU-UPI and WU-UP2-SSA/SSB areas has concluded, calculation of an estimated remediation timeframe for the WAA-BLUFF area is unnecessary. In other words, wells GE-W AA-06 through 13 will continue operating until UP 1 and UP2 remediation goals have been met and injection in these areas is discontinued.
Density The results of geotechnical analyses performed by Standard Testing and Engineering Company (Standard Testing) on site-specific soils collected from the UPI area in 2015 yielded bulk densities varying from 99.9 pounds per cubic foot (pct) to 122.4 pcf, averaging 113 pcf (1.81 grams per milliliter [g/ml]). The soils submitted for these analyses are considered representative of transition zone and weathered bedrock formations and the average density resulting from the analyses is considered appropriate for calculating remediation durations for alluvial areas as well. Consequently, 1.81 g/ml was used as the bulk density for all Remediation Areas in calculations associated with the Remediation Duration Estimates. The use of the highest density results in the estimation of the greatest mass of sorbed contaminant, yielding longer duration estimates than if a lower density were used.
Porosity Based on the results of previous site investigations, EPM and Bums & McDonnell concluded that the porosity used in Remediation Duration Estimates should be the effective porosity rather than the total porosity. Previous investigations have indicated the majority of contaminant mass requiring remediation, particularly in the less permeable transition zone and weathered/fractured sandstone formations, resides within the interconnected pore space of the aquifer. Since the groundwater extraction/injection remedies will also affect contaminant removal and transport within the interconnected pore space, effective porosity is the most appropriate input parameter for estimating remediation timeframes.
Page 2 of 11
Memorandum (cont,d)
September 10, 2018 BURNS ~
£DONNELL Geotechnical data generated by Standard Testing in 2015 indicated that the total porosity for soils collected in the UPl area varied from 0.34 to 0.46 in the six soil samples collected during the 2014 design investigation. As with density, the soils submitted for porosity analyses are considered representative of transition zone and weathered bedrock formations.
Effective porosity values were developed for sandstone and alluvial soils based on: a) a lack of analytically-derived effective porosity values, b) a minimum total porosity of 0.34, and c) characteristics of the materials comprising the water-bearing units at the Site. The effective porosity of transition zone soils was based on the findings of the Environmental Sequence Stratigraphy and Porosity Analysis, Burial Area 1, conducted by Bums & McDonnell in April 2018 1.
In summary, the effective porosity values used in calculations associated with the Remediation Duration Estimates are as follows:
Remediation Area Formation / Soil Type Effective Porosity BAl-A Transition Zone/
55B (weathered/fractured) 0.11 BAl-B BAl-C WAA U>DCGL Alluvium 0.30 WAA-EAST WAA-WEST WAA-BLUFF WU-UPl WU-UP2-SSA SSA (weathered/fractured) 0.10 WU-1348 WU-BA3 WU-UP2-SSB WU-PBA SSB (competent) 0.05 1206-NORTH Transition Zone 0.11 Distribution Coefficient (Kct)
Tests performed in 2002 and 2006 by Hazen and Associates reported uranium Kct values for various site-specific materials. The test demonstrated that uranium Kct increased as particle size decreased. Alluvial sand yielded a Kct of 0.5 milliliters per gram (ml/g), silt yielded a Kct of 2.0 ml/g, and clay yielded a Kct of 3.4 ml/g. All tests were conducted with groundwater from BAl; minor variations in groundwater geochemistry present across the site may impact Kct.
1 Burns & McDonnell Engineering Company. (2018). Environmental Sequence Stratigraphy (ESS) and Porosity Analysis, Burial Area 1, Cimarron Former Nuclear Fuel Production Facility. Concord: Mike Shultz.
Page 3 of 11
Memorandum (cont'd)
September 10, 2018 BURNS ~ M!:DONNELL Consequently, more conservative values than those reported were in calculations associated with the Remediation Duration Estimates.
None of the borings completed in TZ formations yielded only clay; they yielded of a mixture of clay, silt, and fine sand, the use of a uranium Kct value of 3.4 ml/g for all TZ material was deemed overly conservative. Consequently, a value of 3.0 ml/g was selected for TZ soils.
Similarly, borings drilled in SSA and SSB contained a high degree of silt. Based on these observations, it was decided that a Kct lower than that reported for clay should be used for SSA and SSB. Consequently, a value of 3.0 ml/g was selected for Sandstones A and B.
Clean sand yielded a uranium Kct of 0.5 ml/g during the Hazen tests. However, although borings in the floodplain do contain intervals of very "clean" sand, there is sufficient silt and/or clay to justify the use of a higher Kct value than that reported for clean sand. Consequently, a uranium Kct of 2.0 ml/g was used in Remediation Duration Estimates conducted for alluvial areas.
For nitrate, a Kct value of 0.6 ml/g was used for all formations and soil types. This value was deemed sufficiently conservative based on a review of applicable technical references2,3 In summary, the Kct values used in calculations associated with the Remediation Duration Estimates are as follows:
Formation / Soil Type Uranium Kd Nitrate Kd (ml/g)
(ml/g)
TZ 3.0 0.6 SSA 3.0 0.6 SSB 3.0 0.6 Alluvium 2.0 0.6 Using comparatively high Kct values results in a greater total mass of uranium requiring removal, increasing the estimated duration of remediation.
Saturated Thickness The average value of saturated thickness for each Remediation Area was re-investigated for the purposes of performing the Remediation Duration Estimates. The saturated thickness was calculated for each well using depth to water (DTW) data recorded each year from 2012 to 2015.
The maximum saturated thickness in each well was identified, and the average of the maximum 2 Krupka et al. (2004). Linearity and reversibility of iodide adsorption on sediments from Hanford, Washington under water saturated conditions. Water Research (Volume 38, Issue 8, April 2004, pp. 2009-2016). Elsevier.
3 Seme, R.J. Kd Values for Agricultural and Surface Soils for Use in Hanford Site Farm, Residential, and River Shoreline Scenarios (PNNL-16531). (2007). Washington: Pacific Northwest National Laboratory.
Page 4 of 11
Memorandum (cont'd)
September 10, 2018 BURNS ~
SDONNELL saturated thicknesses for the wells located in each Remediation Area was calculated. A list of the wells used for each Remediation Area is provided in the Attachment A. The following average saturated thicknesses were used in calculations associated with the Remediation Duration Estimates:
Average Maximum Remediation Area Saturated Thickness (feet)
BAl-B 16 BAl-C 19 WAA U>DCGL 19 WAA-EAST 19 WAA-WEST 20 WAA-BLUFF 10 WU-UPl 8
WU-UP2-SSA 8
WU-UP2-SSB 12 WU-1348 14 WU-BA3 5
WU-PBA 19 Note: average saturated thicknesses were not calculated for BAI-A or 1206-NORTH since three-dimensional modeling was used to calculate volumes required for remediation duration estimates.
Annual reviews of groundwater elevation data conducted since 2015 have demonstrated that appreciable DTW variations have not occurred since the values presented above were calculated.
Consequently, the average saturated thicknesses presented herein remain valid for estimating remediation durations.
Initial Contaminant Concentrations For each Remediation Area and contaminant (uranium or nitrate), the larger of the following was assumed as initial concentration for estimating the required remediation duration: (1) the maximum representative concentration reported for any well within the Remediation Area
( determined using sampling results for monitoring events conducted from 2011 through the Second Quarter 2017), (2) the concentration estimated by conducting incremental area-weighted averaging of concentrations within the specified treatment area.
The maximum representative uranium and nitrate concen_tration reported for wells within the Remediation Area are listed below:
Page 5 of 11
Memorandum (cont~d)
September 10, 2018 Remediation Area 8Al-A 8Al-8 8Al-C WAA U>DCGL WAA-EAST WAA-WEST WAA-8LUFF WU-UPl WU-UP2-SSA WU-UP2-SS8 1206-NORTH WU-1348 WU-8A3 WU-P8A BURNS ~ M!:DONNELL Maximum Uranium Maximum Nitrate Concentration Concentration
(µg/L)
(mg/L) 2,975 (TMW-09) 3,516 (TMW-13)
N/A 51.2 {1373) 177.8 (T-62) 139 (T-63) 92.26 (T-59) 112 (T-59) 64.1 (T-97) 10.2 (T-97) 20.0 (T-58) 239 (T-54) 22.1 {1312) 380 {1312) 81.9 (1381) 1,006 {1385) 5.45 (1346) 407 {1346) 527 {MWWA-03) 43.1 (MWWA-09) 71.3 (1348) 11.7 {1350) 875 (1351) 76.1 (1351) 38.01 {13198-1) 75.8 (13198-3)
Note: monitor well associated with each result identified in parentheses.
Incremental area-weighted averaging was performed for each relevant Remediation Area using isopleth contours developed using representative groundwater concentrations for monitor wells located within the remediation area. Average concentration calculations and results are contained within an MS Excel workbook entitled Iner. AWCA Calcs_Rev. C (09-05-18).xlsx. The area-weighted average concentrations used in calculations associated with Remediation Duration Estimates are also summarized below:
Average Uranium Average Nitrate Remediation Area Concentration Concentration
(µg/L)
(mg/L) 8Al-A 824 8Al-8 319 N/A 8Al-C 37.5 WAA U>DCGL 76.16 39.3 WAA-EAST 39.9 55.4 WAA-WEST 46.0 20.7 WAA-8LUFF N/A N/A WU-UPl 15.6 204 WU-UP2-SSA 26.3 378 WU-UP2-SS8 N/A N/A 1206-NORTH 248 42 WU-1348 56.8 N/A WU-8A3 311 54 WU-P8A 34.7 15.6 Page 6 of 11
Memorandum (cont'd)
September 10, 2018 Remediation Goals BURNS ~
SDONNELL The Nuclear Regulatory Commission (NRC) uranium remediation goal (i.e., the DCGL) of 180 picoCuries per liter (pCi/L) applies to all Remediation Areas at the site; however, the equivalent DCGL mass concentration varies across the Site as the Uranium 235 enrichment varies. DCGL mass concentration equivalent calculations and results are contained within an MS Excel workbook entitled Uranium Activity vs. Mass Concentration_ Rev. A (07-30-18).xlsx.
The Oklahoma Department of Environmental Quality (DEQ) also established groundwater remediation goals for uranium, nitrate, and fluoride that apply to various Remediation Areas. For uranium and fluoride, the DEQ criteria are equivalent to the MCLs for these constituents - 30
µg/L and 4 µg/L, respectively. The DEQ Criterion for nitrate is 22.9 mg/L for all areas except the WU-PBA area. The nitrate DEQ Criterion for the WU-PBA area is 52 mg/L. As discussed in the 2015 Cimarron Facility Decommissioning Plan3, the 22.9 mg/L criterion is an alternate concentration limit based on background groundwater quality; the 52 mg/L limit for the WU-PBA is a risk-based limit based on industrial occupancy.
Remediation goals used in calculations associated with Remediation Duration Estimates are summarized below:
NRC Criterion for DEQ Criterion for DEQ Criterion for Uranium Uranium Remediation Area
[DCGL]
[MCL]
Nitrate
(µg/L)*
(µg/L)
(mg/L)
BAl-A BAl-B 201 N/A BAl-C WAA-EAST WAA-WEST WAA-BLUFF Uranium <DCGL WU-UPl WU-UP2-SSA 30 WU-UP2-SSB 22.9 WU-1348 WU-BA3 WAA U>DCGL 119 1206-NORTH WU-PBA Uranium <DCGL 52 Notes:
3 Environmental Properties Management, LLC. (2015). Cimarron Facility Decommissioning Plan. Oklahoma City.
Page 7 of 11
Memorandum (cont~d)
September 10, 2018 BURNS ~
£DONNELL
- DCGL uranium mass concentrations are approximately equivalent to 180 pCi/L activity concentration:
201 µg/L generates 180 pCi/L at 1.3% U-235 enrichment.
119 µg/L generates 180 pCi/L at 2.9% U-235 enrichment.
Remediation Flow Rates Nominal combined flow rates for the BA 1 and W estem Area remediation system are 100 and 250 gallons per minute (gpm), respectively. The remediation flow rates used in calculations associated with the Remediation Duration Estimates consist of pumping rates and treated water infiltration rates associated with groundwater extraction and injection components, respectively, located within each Remediation Area. Determination of these flow rates was based on numerous factors including contaminant distribution, aquifer characteristics, and evaluation data obtained through pilot testing.
Nominal treated water infiltration rates used to estimate remediation timeframes for Remediation Areas are as follows:
Remediation Area Nominal Infiltration Rate (gpm)
BA1-A 18 WU-UP1 44 WU-UP2-SSA 56 WU-UP2-SSB 10 WU-BA3 8
Nominal groundwater extraction rates used to estimate remediation timeframes for Remediation Areas are as follows:
Attachment Page 8 of 11 Remediation Area BA1-A BA1-B BA1-C WAA U>DCGL WAA-EAST WAA-WEST WAA-BLUFF 1206-NORTH WU-1348 WU-PBA Nominal Extraction Rate (gpm) 14 66 (86 following shutdown of BA1-C) 20 99 20 10 104 8
4 5
Memorandum (cont,d)
September 10, 2018 cc:
Bill Halliburton Page 9 of 11 BURNS ~
£DONNELL
Memorandum (cont,d)
September 10, 2018 BURNS ~
SDONNELL BAl-A 02W01 02W02 02W03 02W09 02W10 02W20 02W25 02W26 02W27 02W28 02W29 02W30 02W31 02W39 02W40 02W41 02W42 02W47 02W53 1315R 1316R TMW-01 TMW-02 TMW-05 TMW-06 TMW-07 TMW-08 TMW-09 TMW-21 TMW"725 Page 10 of 11 ATTACHMENT A REMEDIATION AREA MONITOR WELLS BAl-8 02W04 02W0S 02W06 02W07 02W08 02W11 02W12 02W14 02W15 02W16 02W17 02W18 02W19 02W24 02W32 02W35 02W36 02W37 02W38 02W43 02W44 02W45 02W46 1362 TMW-13 BAl-C 1369 1370 1371 1372 1373
Memorandum (cont~d)
September 10, 2018 WAA-WEST WAA-EAST T-97 T-59 T-98 T-60 T-61 T-89 T-90 T-91 T-92R T-93 T-102 WAA-BLUFF WU-UPl T-54 1311 T-55 1312 T-56 1313 T-57 1340 T-58 T-88 WU-1348 1348 1350 1353 Page 11 of 11 BURNS ~
£DONNELL WAA U>DCGL WU-PBA WU-BA3 T-62 1319B-1 1351 T-63 1319B-3 1352 T-65 1319B-4 1356 T-66 1359 T-67 1360 T-68 T-70R T-72 T-73 T-74 T-75 T-76 T-77 T-78 T-79 T-81 WU-UP2-SSA WU-UP2-SSB 1206-NORTH 1336A 1346 MWWA-03 1347 1382 MWWA-09 1381 1386 1385 1392 1393 1394
.0 - Area and Linear-Weighted Averaging Results
Uranium Total Arca (Sq. Ft.)
I Uranium Contour Average (ug/L)
I Weight Avg.
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105 I
115 I
125 I
Cone.
Total Area: WU 1206 South (GETR-WU-01)
I Actual Arca 9,521 I 9,049 I 7,357 7,913 I 6,093 I 2,043 I 1,29 1 I 691 I 155 JO I fue/Ll WU "1206 SOUTH" (GETR*WU-01)
I Weinhted A,*era2e 333,235 I 407,205 I 404,635 5 14 345 I 456,975 I 113,655 I 122,Ms I 12,sss I 17,825 I 3,750 I 56.79 Uranium isopleths used: Sandstone A Uranium Contours (I0ug/L)
I 44, 143.00 Uranium Total Arca (Sq. Ft.)
Uranium Contour A, 1erage (ul!IL)
I Weight A,'g.
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10 I
25 30 35 I
so I
70 I
80 I
Cone.
Tohtl Art"H: WU-PBA (GE-WU-01)
WU-PBA (GE-WU-01)
I Actual Arca 15,661 I 68,412 I 25,257 2,034 I 28,820 I 59,554 I 41,459 I 2,239 I (ug/L\\
- i I
Weinhtcd Averue I
684, 120 I 63 1,425 6 1,020 I 1,008,700 I 2,977,700 I 2,9'.l2, 1Jo I 119,120 I J.l.69 z
Uranium isopleths used: Sandstone B. Transition Zone. A lluvium Uranium Contours {20ug/L)
I 2H.436.00 Uranium Total Arca (Sq. Ft.)
Uranium Contour Average (ug!L)
I Wei~ht A,*g.
IX I
60 I
ISO I
250 350 I
450 550 I
650 I
750 I
Cone.
Total Arca: GWI-WU-01 (BAJ)
=-
I Actual Arca 7,645 I 9,248 I 5,827 4,854 I 4, 155 I 4, 105 I 4,096 I 1,460 I (ue/L)
GWI-WU-01 (BAJ)
I Wciehtcd Avcrape 458 100 I 1,387,200 I 1,456,750 1,698,900 I 1,869,750 I 2,257,750 I 2,662,400 I 1,095,000 I 311.J.l Uranium isopl eths used: Sandstone A Uranium Comours (I00ug/L) 4 1,390.00 Uranium Total Area (Sq. Ft.)
I Uranium Contour Avcrae:e (ug/L)
I Wei~ht Av~.
Total Arca: WU 1206 NORTH (GETR-I 120 I
130 I
150 170 190 I
210 I
230 I
250 I
270 290 I
310 I
330 I
350 I
370 I
390 I
410 I
430 I
450 I
460 I
Cone.
Actual Area 576 I 1,469 I 3,740 3,745 2,229 I 1, 143 I 1,053 I 1.429 I 1,279 1 1,634 I 1.958 I 2.112 I 1,076 1 1, 108 J 1,019 1 794 I 569 I 344 I 119 1 (ue/Ll WU-02)
WU "1206 NORTH" (GETR-WU-02)
Weiehtcd Average 69, 120 I 190,970 I 56 1,000 636,650 423,510 I 240,030 I 242, 190 I 357,250 I 345,330 I 473,860 I 606, 980 I 696,960 I 376,600 I 409,960 I 397,410 I 325,540 I 244,670 I 154,800 I 54,740 I 248.49 Uranium isopleths used: Sandstone 13. Transilion Zone. Allmrium Uran ium Contours (:?Oug/L) 27,39600 Nitrate Total Arca (Sq. Ft.)
Nitrate Contour Average (me.IL)
Weight A,*e.
0 I
5 I
30 60 Cone.
Total At"t'~: WU-PBA (GE-WU-01 )
W U-PBA (GE-WU-01)
Actual Area 78,832 I 62,310 I 88,786 13,507
<m*/Ll Weighted Average I
311,sso I 2,663,580 8 10,420 IS.55 243.435.(X)
Nitrate isoplet hs used Sandstone B. Transition Zone. Alluvium Ni trate Contours (50ug/L)
I Nitrate Total Arca (Sq. Ft.)
I Nitrate Contour Avera2.c (mL?/ L)
I Weight A'"l*
I 20 I
35 I
75 100 I
Cone.
Total Arca: GWI-WU--01 (BAJ)
GWJ-WU--01 (BAJ)
Actual Area 1,266 I 21,014 I 17,287 1,763 (me/l.l Wci2hted Avcra2:e 2s,J20 I 737,590 I 1,296,525 176,300 I 5-1.02 Nitrate isopleths used: Sandstone A Nitrate Contours (5Uug/L )
4 1.390.00 Nitrate Total Arca (Sq. Ft.)
I Nitrate Contour Average (me.IL)
I Wei~hl A,*e.
Total Arca: WU 1206 NORTH (GETR-I 35 I
65 I
Cone.
Actual Arca 20,816 I 6,578 1 (me/L)
WU-02)
WU "1206 NORTH" (GETR-WU-02)
Weil!htt...-d Averas!e 728,560 I 427.570 I 42.20 Nitrate isopleths used: Sandstone 8. Transition Zone. Alluvium Nitrate Contours (50ug/L) 27.394 00 Notes:
Isopleth shapefiles located* SSA: Z \\Clierns\\ENSICERT\\104407 _ CERT-DECOM2018\\Design\\Dclivcrables'60% Design\\Water Trea1men1 Design Basis\\Preliminary 60% Uranium Water Treatment Design Basis (July 20 I 8)\\Surfer f iks\\PDFs\\WAISSA SSB: Z:\\Clicnts\\ENSICERT\\ 104407 _ CERT-DECOM2018\\Dcsign\\Dclivcrablcs\\60% Dcsign\\Watcr Treatment Design Basis\\Preliminary 60% Uranium Water Treatment Design BaS!s (.lulv 2018)\\Surfer FileslPIJFs\\WAISSB-WAA-TZ
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- Uranium Sandst one A lOOug/L WU-PBA (GE-WU-01) - Nitrat e Sandstone B/Trans/Alluvium 50mg/L GWI-WU--01 (BA3)
- Nitrate Sandstone A 50mg/ L WU " 1206 NORTH" (GETR-WU--02) - Nitrate Sandstone B/Trans/Alluvium 50mg/ L
~
- i z IX Total Arca (Sq. Ft.)
Nitrate Contour Average (mg/L)
I Weight Avg.
~
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25 I
70 I
Cone.
Actual Area 2,450 I 135,074 I
!08,066 I
-1 tmo/Ll I
\\\\leiuhted Avera..-e I
3,376,850 I 7,564,620 I
.I
-14.55
~
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Nitrate Contour Average (mg/L)
Weight Avg.
25 I
70 I
7 I
Cum:.
~
GE:-WAA-112 Actual Arca I 90,429 I 89,983 I
-1
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\\Veii!hted Avcra9e I 2,260,725 I 6,298,810 I
-1
-1 47.44
?:
Nitrate Contour Average (mg/L)
Weight Avg.
s Total Arca (Sq. Ft.)
I 0
I 25 I
75 I
100 Cone.
GE-WAA-03 5
Actual Area 29,1837 58,425 I 38,712 7 8,149 tmolL)
I:!
I Wci!!hted Avcnu!'c I
1.460.625 I 2.903.400 7 814.900 38.51 Total Area (Sq. Ft.)
I Nitrate Contour Average (mg/L)
I Weight Avg.
I 0
I 25 I
I I
Cone.
GE-WAA-114 Actual Area 8,6% I 163.738 I
-7 lmolL)
I WciPhted Averaoe I I
4.093.450 I
.7
.I 2.74 Nitrate Contour Average (mg/L)
Weight Avg.
~~
Total Area (Sq. Ft.)
0 I
25 I
7 I
Cone.
GE-WAA-05 Actual Area I 68,605 I 329.238 I
- 1
-1 f m~Ll Wei!!hte<l AvcraPc I
8,230.950 T
_7
- 1 20.69 Total Area (Sq. Ft.)
Nitrate Contour Average (mg/L)
Weight Avg.
0 I
25 I
75 I
100 Cone.
~
GE-WAA-14 Actual Area I 284 I 165,918 I 229,7 15 I 16,676 I lmo/L) 0 WciPhted A vcravc I I
4.147,950 I I 7.228,625 I 1,667,600 I 55.85 u
~
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Nitrate Contour Average (mg/L)
Weight Avg.
~
GE-WAA-15 0
r 35 I
75 7
IOO Cone.
~
Actual Area S5 I 22S.543 I 159,741 I 29,499 lmo/L)
Wei~hted AveraPc I
7 894,005 I 11,980 575 I 2 949,900 55.02 Total Area (Sq. Ft.)
Uranium Contour Average (ug/L)
~
GE-WAA-01 35 I
so I
70 I
90 110 Actual Area 94,50s I S3,048 I 31,7667 20,097 18,0 15 Wci2hted Aver.we 3 307 675 I 2 652 400 I 2 223 620 7 I 808 730 I 981,650 UJ 0
I Uranium Contour A'\\-*erage (ug/L) l' Total Area (Sq, Ft.)
GE-WAA--02 35 I
so I
70 I
90 110 Actual Area 43,189 I 31,858 I 20,1301 18,41 1 19,568 ci Wei2hted Avera2c 1,511,615 I 1,592,900 I 1,409,1001 1,656,990 2,152,480
?:
Total Area (Sq. Ft.)
Uranium Contour A'\\-*crage (ug/L) s GE-WAA--03 35 I
so I
70 I
90 110 6
Actual Area s,103 I 11,308 I 13,984 l 17.163 20,963 3
Weiehted Averal!c t78,605 I S65,400 I 978,880 I 1,544,670 2,305,930
?
Total Area (Sq. Ft.)
Uranium Contour A"*crage (ug/T )
GE-WAA-04 35 I
so I
70 I
90 II Actual Arca 53,294 I 60,190 I 26,5051 17,073 10,196 I
Weiohted A ver~oc I 865 290 I 3.009 5 I
1.855 350 I I 516 570 I 121.560 i5 I r nto r V
e( g/L)
Weight Avg.
8 f-Total Area (Sq. Ft.)
35 I
I 60 I
Cone.
- ,~
GE-WAA--05 Actual Area 114,648 I 272,322 I 10,873 7
- u*/Ll I
Wciohted Avcrat!e 4,012,6 o I 13,6 16,1 I
652,3 o I
'.9 i;;
I Total Area (Sq. Ft.)
Uranium Contour Average (ug/L)
Weight Avg.
~
GE-WAA-14 35 I
so I
70 I
80 I
Cone.
I AetualArcal 288,927 I 70,521 I 43,308 I 9,855 I
- 1uo/Ll c
I Wei2hted Aver81!e 10,112,445 I 3,526,050 I 3,031,560 7 788,400 I 42.31 u
~
I Total Area (Sq. Ft.)
Uranium Contour Average (ug/L)
Weight Avg.
~
GE-WAA-15 15 I
30 I
50 I
70 Cone.
~
I Actual Areal 14,859 I 265,409 I 103,176 I 31,394 I t u*iLl I
Wei~htOO AveraPel 222.885 I 7.962.270 I 5.158 800 I 2 197580 I 37.46 Note5:
Areas and Cones. taken from W AA DCGL.m-.;d Nitrate isopleths med: Sandstone 8, Alluvium, Transition Zone Nitrate Contours - 50ug/L Uranium isopleths u!cd: Sandstone B, Alluvium, Transition Zone Uranium Contours - 20ug/L TOTAL AREA OFGE-WAA--01 I 245,590.00 I TOTAL AREA OF GE-WAA--02 I 180,412.00 I A,*~. \\\\l eight Cone:
39.26mi:/L TOTAL AREA OF GE-WAA--03 I 134,469.00 I TOT AL AREA OF GE-W AA--04 I 172,434.00 I TOT AL AREA OF GE-W AA--05 A,*g. Weight I 397.843.00 I Cone:
20.69mg/L TOTAL AREA OF GE-WAA-14 I 412,593.00 I A,*2. Wei~ht Cone:
55.44mg/L TOTAL AREA OFGE-WAA-15 I 414,838.00 i Weight Avg, TOTALAREAOFGE-WAA--01 I
130 I
140 I
Cone.
I 28,161.00 I 24,617 I 3,544 I
/uo/L\\
3,200,210 I 496.160 I 63.81 I Weight Avg.
TOTALAREAOFGE-WAA--02 I
130 I
150 I
160 Cone.
I 47,238.00 I 19,621 I 24.603 I 3,014 I luo/L\\
2.sso,130 I 3,690,450 I 482,240 I 83.41 A,1g. Weight Cone:
I Weight Avg.
- 76. 16ug/L TOTAL AREA OF GE-WAA--03 130 I
150 I
160 I
Cone.
I 65,375.00 I 24,780 I 29,354 I 11,241 I luo/L\\
3,22 1,400 I 4,403,100 I 1,798,560 I 112.00 I Weight Avg.
TOTAL AREA OF GE-WAA-04 30 I
140 I
I Cone.
I 5,176.00 I S,093 I 83 I
- I
,...,,u 662 090 I 11.620 I 58.35 TOTAL AREA OF GE-WAA--05 A,.~. Wei~ht I 397,843.00 I Cone:
45.95ui:fL TOTAL AREA OF GE-WAA-14 I 412,61 LOO I Avg, Weight Cone:
39.88ug/L TOTAL AREA OF GE-WAA-15 I 414,838.00 I Isopleth shapefiles located: Z:\\Clienls\\ENSICER Tl I 04407 _ CER T-DECOM20 18\\Design\\Delivernbles\\60% Design\\Water Treatment Design Basis~'reliminary 60% Uranium Water Treatment Dcsi!,'Tl Basis (July 2018)\\Surfer F iles\\Shapefilesl WA SSB Trans
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UPI Actual An:a Wci2htcd Averu2c Total Are-a (Sq. Ft.)
UP2 Actual Area WeiPhted AYeraec Total Arca (Sq. Ft.)
UPI Actual Arca Wci2htcd Avcra2c Total An,a (Sq. Ft.)
UP2 Actua l Arca
\\Vci2.htt.--d Avcnu!.c Nitrate Contour A,*crae:c (m2'L) 25 I
75 I
125 175 I
225 I
275 41.566 I 62,965 I 50,459 I 57,368 I 65,167 I 133,541 1,039, 150 I 4,722,375 I 6,307,375 10,039,400 I 14,662,575 36,723,775 25 I
75 I
125 I
175 I
225 275 29,869 I 3 1,127 I 25,787 I 19,20 1 I 20,375 21,442 746,716 I 2 334 498 I 3,223,355 I 3 360 236 I 4,584,341 5,896,457 l---:,tl,---,--
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1s,029 I 10 1,036 I 239,6 17 I 505 180 I 3,594,255 I 15 I
25 I
87,251 I 114, 19s I 54,502 I 436,254 I 1,7 12,968 I 1,362,540 I 93,423 I 32,205 2,335,575 I 1,127.175 Uranium Contour A,1eraec (uz L) 35 I
45 52,899 I 62,824 i,851.465 I 2,827,080 (u2/L) 15.6 1 55 I
30, 152 I 1,658,355 325 I
350 I
375 425 WeiWlt A Y~. Cone. I 49,402 I 2,039 I 15,772 6,033 (metL,
I 16 055,650 I 713,650 I 59 14,500 2,564,025 203.88 I
Nitrate Contour A,1cra2e (m UL) 325 I
375 I
425 I
475 525 I
575 I
625 27,05 1 32,928 40,163 46,691 37,181 I 24, 11 9 I 18,368 8,79 I,608 I 12,347,906 I 17,069,275 I 22,178 135 19 520,109 I 13,868.218 I 11.479,881 65 75 Weight A,*g. Cone.
14,489 3,61 1 (ue/L1 94 1.767 270,829 26.34 Total Area (Sq. Ft.)
UPI t----.2--,--1---,6--,--l---,l~O-----r----:1~4-----rl----:1=8-~--Fl
"";;;:,;;.:..;*id;.;;;cC-'C:;.:o.:.:;nt....
ou::;.r.:..;Accvc:.:.2:ci:*Rc:..'<l:.:::c'"l,=L,.._)_3_0_~1~--34--~l---38--~--42---l~-4-* 6----f Wci~ht A,-~. Conc.
Actual Arca 42,3 14.00 I 82,942 00 I 6 1,073.00 50,00400 I 46,25400 37,727.00 36,366.00 34,028.00 I 30,281.00 I 33,28 1.00 23,903 I
6 139 lm*/L\\
Wci2htcd Avera!!C 84,628.00 I 497,652.00 I 6 10,730.00 700 056.00 I 832,572.00 829,994.00 945,5 16.00 1,020,840.00 I 1,029,554.00 I 1,26 678.00 1003926.00 I 2 2.394.00 18.79 Total Arca (Sq. Ft.)
UP2 Actua l Arca 55,924.36 I 15 1,406.oo I 183,018.oo 28,265.6 1 I 1,715.55 (ml!iL)
Wcit!htt..-d Avcrae.c 11 1,848.72 I 908,436.00 I 1,830.180.00 395,7 1854 I 30,879 90 7.Hfl Notes:
Nitrate i101Jleths used:
Sandstone A Nitrate Contour-50ugll.
Uranium iso pleths used:
Sandstone A Uraniwn Contour - !0ug/L Fluoride iso11lcth:s und:
Sandstone A Fluoride Contour - 4ug/L Isopleth shapcfilcs located: Z:\\Clicnts\\ENS\\CERT\\ J 04407_CERT-DECOM20 18\\Dcsig.n\\Delivcrnblcs\\603/4 Dcsig.n\\Wotcr Treatment Design Basis\\Prcliminary 60% Uranium Water Trcotmcnt Design Basis (July 2018)\\Surfcr Filcs\\PDFs\\ WA\\SSA
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Fluoride - Sandstone A - 4ug/L 675 I
725 I
775 I
825 I
14,667 I 13,2 14 I 8,886 I 4,98 1 I 9,900,056 I 9,580,4 18 I 6.886 650 I 4, 109 135 I UP2
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900 Wci~ht A,*g. Cone.
TOTAL AREA OF' UP2 3,008 I 822 (ml!iL) 2 632 000 I 739,800 37'.27
-1 19,878.1-1 TOTAL AREA OF UPI 1,3IO.OO TOTALAREAOF'UP2 419,925.00 TOTAL AREA OF' UPI
~8-1,312.00 TOTAL AREA Of UP2 420,329.52
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Total Area (Sq. Ft.)
Area A Total Area Actual Area Wci2hted Averue Area Bl Total Area Actual Area I
Wei *hted Averaee Area Cl I
Total Area I
Actual Areal WeiRhted Averaire Total Arca (Sq. Ft.)
Area A Total Area Actual Area Wcil!:hted Averai!e Arca B2 Total Areal Actual Areal Weiehted Avera2:cl Scenario I Contour Avcru2c (u2'L)
ARC Area, I 38 75 125 175 225 I
275 I
JOO I
500 I
700 I
900 I
1100 I
1300 1500 1700 I
19fHl 2100 I
2300 I
2500 2700 2900 I
3100 3300 I
65.02600 1 61.87020 1 5<>.226.72 1 5 1.7899~ 1 48.1(,806 1 45,160.58 1 42-158.02 I
38,022.00 1 31.589.90 1 26,849.50 1 22.616.00 1 18.650.00 1 14,90130 1 12,142.80 1 9.776.00 1 7,556.80 1 4,921.501 1,317.20 1 I
65,025 I
3,155 ~0 1 5,"434~ 1
-1.-1.1674 1 3.621.92 1 3.0074~ 1 2.702.5(, 1
-1.43602 1 6,432.10 1 4,740.40 1 4,233.50 1 3,966.00 1 3,74870 1 2,758.50 1 2.366.80 1 2.21920 1 2635.lO I 3,(,04.301 1,31720 1 I
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128.97900 I 105.048 00 I 72.30250 I 56.368 28 I 45.7-14 90 I 39.380 10 I 11.62000 I 23.813 91 I 17.329.20 I 11843.30 I 10,910.70 I 8.287.20 I 7.034.20 I 5.972.60 I 4.994.20 I 4.116.50 I 3.249 70 I 2.265 70 I 1.278.(JO I 609.50 I 221.80 I 6.50 I
43.9:U(l(> f I
I I
I I
I I
I I
I I
I I
43,933 I
43.933 00 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 1.6-17.487.50 I I
Scenario 2 Contour Avera2c (u2/L)
ARC Arca., I 37.50 I 75 I
125 I
175 I
225 275 I
300 I
500 I
700 I
900 I
1100 I
1300 1500 I
1700 I
1900 2100 2300 I
2500 2700 I
2900 I
3100 3300 93,027 I
65,0260<> 1 6 1,870.20 1 56.226.72 1 51.78998 1 48.16806 1 45,160. 58 1 42.458.02 1 38,022.00 1 31,589.90 1 26,849.50 1
- !'.!.6 16.00 1 18,650.00 1 14.90 1.30 1 12.142.80 1 9,776.00 1 7.556.80 1 4,921.501 1.. 111.20 1 I
I 93.027CXl I 84.10462 1 69.056.Sil I 5(,.368 28 I 45.744.90 I 39.38(1 10 I 33.620()(1 I 23.813.91 I 17.329.20 I 13.843.30 I I0.9 10.70 I 8.287.20 I 8.922 38 I 15.048 12 I 12.688.22 I 10.623.3~ I 6,364.80 I 5,760. 10 I 9,806.09 I 6,484.71 I 3,485.90 I 2,932.60 I 2,623.50 I 1,253.00 I 334.58925 1 1.128.609<Kl I 1.586.027.50 I 1.859.09 1.so I 1.432.080 ()(1 I 1.584.027.SO I 2.941.826.10 I 3.242.356.so I 2.440.1 30.oo I 2.639.340.oo I 2.885.sso.oo I 1.628.900.0.l I 7.034.20 I 1.061.60 I 1.592.-100.00 I 5,972 60 I 978.40 I 1.663.280.00 I 4.994.20 I
-1.116.50 I 877.70 I 866.80 I 1,667,630.00 I 1.820.280.00 I 3,249.70 I 2.265 70 I 1,278.00 I 609.50 I 221.80 I 6.50 qg4 00 I 987 70 I Ci68 50 I 387.70 I 21530 I 650 2.263.200.00 I 2.469.250.00 I 1,804.950.00 I I, 124,330.00 I 667,430.00 I 21,450.00 l'-A_rc~a~C=
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a l 79,885
~::~: ~~; :
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3.24600 I 3.246.m I 405.7Sil oo 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
Arca A Arca BJ Area CJ Wei2hted Average I
2,210,11075 I 1127_1()3 Sil I I
I I
I I
Scenario J Contour Averae.c (u2/L)
Total Area (Sq. Ft.)
ABC Area., I 37.5 75 I
125 I
175 I
225 1300 I
1500 I
1700 I
1900 2100 23(Hl 2500 I
2700 I
275 I
JOO I
500 I
700 I
900 I
1100 I
Total Area Actual Area Wei2hted Averat!e Total Areal Actual Areal Wciehtcd Anra2e Total Areal Actual A real Wei2htcd Anrae:e Art;c.ts dcnvtrl from SOug/1. contours
- 45. l60.5S I 42,458.02 I 38.022.00 I 31,589.90 I 26,849.50 I 22.616.00 I I
65026\\~lf 61.87020 1 56,226.72 1 51.789.9~ 1 48, 168.06 1 18.650.0<l l 14,901.30 1 12.142.80 1 9.776.00 1 7.556.80 1 4,921.50 1 1,31720 1 I
76,285 I
I I
76,285 O<l I 6,05500 I 227.062.50 I 70,2300<1 I 9_838 53 I 737.889 75 I I
96.627.0<l I 34.818.(X) I
%,627 I
61.809 <X* I
- 22. 906 9i I I
2,317.83750 I 1.718.022 75 I 60.391.47 I 7.561.32 I 945.164 38 I 11.911 03 I 8.37'.!.91 I 1,1146.613 13 I 52.830. lh I 7.085.26 I 1,239.9 19.63 I 3.538 13 I 3.538 n I 61917188 1 45.744.90 I 6.364 80 I 1.432.080 00 I 2.70::!.56 I 4.436.02 I 6.432.10 I 4.740.40 I 743.204 oo I 1,330.806.m I 3,216.050.00 I 3,318.280. oo I 39.380.10 I 31.620<"1.l I 23.813.91 I 17.329.20 I 5.760. 10 I 9,806.09 I 6,484.71 I 3,485.90 I 1.584,027.50 I 2.94 1,826 10 I 3,242,356.50 I 2.440.130.00 I I
I I
I I
I I
I I
I I
I 4,233.50 I 3.%(,00 I 3.81 0.150.00 I 4.362,600.00 I 13.843.30 I 10.910.70 I 8,287.20 I 7.034.20 I 5,972.60 I 4,994.20 I
- 4. 116.50 I 3,249.70 I 2.265 70 I 1,278.00 I 2,932.60 I 2,623.50 I 1,253.00 I 1.061.60 I 978 40 I 877.70 I 866.80 I 984.00 I 987 70 I 668.50 I 2.639.340.00 I 2.885.850.00 I 1.628,900.00 I 1.592.400.00 I 1.663.280 00 I 1,667.630.00 I 1.820,280.00 I 2,261,200.m I 2.469,250 O<l I 1,804.950.00 I I
I I
I I
I I
I I
I I
I I
I I
I I
I I
I I
2900 3100 3300 609.50 I 221.80 I 6.50 387.70 I 215_30 I 6.50 I, 124.330.00 I 667,430.00 I 21.450.00 I
I I
Wei!!ht Av!!. Cone.
823.62 318.60 37.50 Weioht Ave. Cone.
lu*/L1 823.62 417.05
-19.36 Wei*ht A**** Cone.
lu*/Ll 823.62 485.53 59.01
Segment Segment Length Concentration (north to south)
(ft)
Cumulative Lenth (ft)
(ug/L) 1 3
3 2400 2
15 18 2300 3
6 24 2100 4
4 28 1900 5
7 35 1700 6
9 44 1500 7
32 76 1300 8
23 99 1500 9
13 112 1300 10 21 133 1100 11 49 182 900 Weighted Average =
Weighted Concentration (ug/L/ft) 7200 34500 12600 7600 11900 13500 41600 34500 16900 23100 44100 1360 Well ID GETR-BAl-01B GETR-BA1-01A ug/L
~
~ )
/'
_ /
j
~
~
)) 114~\\\\
\\ \\ \\
Segment Segment Length Concentration Weighted (north to south)
(ft)
Cumulative Lenth (ft)
(ug/L)
Concentration (ug/L/ft) 1 3
3 1300 3900 2
16 19 1500 24000 3
11 30 1700 18700 4
9 39 1900 17100 5
9 48 2100 18900 6
47 95 2300 108100 GETR-BA 1-02A
\\ ~
\\ \\
~
\\\\
7 13 108 2500 32500 8
7 115 2300 16100 9
5 120 2100 10500 10 1
121 1900 1900 Weighted Average=
2080 ug/L
Uranium Fluoride Nitrate Segment Segment Length Cumulative Concentration Weighted (NW to SE)
(ft)
Lenth (ftl (ug/L)
Concentration Trench ID (ug/Uft)
Segment Segment Length Cumulative Concentration Weighted Concentration Trench ID (NW to SE)
(ft)
Lenth (ftl (ug/L)
(ug/Uft)
Segment Segment Length Cumulative Concentration Weighted Concentration Trench ID (NW to SE)
(ft)
Lenth (ft)
(ug/L)
(ug/Uft) 1 11.756 11.756 75 881.7 2
61.868 73.624 65 4021.42 3
39.537 113.161 55 2174.535 GETR-WU-01 1
58.251 58.251 0.75 43.68825 GETR-WU-01 2
59.619 117.87 1.25 74.52375 1
107.62 107.62 10.25 1103.105 GETR-WU-01 2
10.114 117.734 9
91.026 4
4.611 117.772 48 221.328 Groundwater Data Source (Formations) - Sandstone A Groundwater Data Source (Formations) - Sandstone A Groundwater Data Source (Formations) - Sandstone A Weighted Average =
1.00 ug/L I
Weighted Average "'
10.1 uo/L I
Weighted Average =
62.0 ug/L
Uranium Fluoride Nitrate Segment Segment Length Cumulative Lenth Concentration Weighted (NW to SE)
(ft)
(ft)
(ug/L)
Concentration Trench ID (ug/L/ft)
Segment Segment Length Cumulative Lenth Concentration Weighted Concentration Trench ID (NW to SE)
(ft)
(ft)
(ug/L)
(ug/L/ft)
Segment Segment Length Cumulative Lenth Concentration Weighted (NW to SE)
(ft)
(ft)
(ug/L)
Concentration Trench ID (ug/L/ft) 1 8.2 8.2 270 2222.1 1
2.7 2.7 4.75 12.73 1
34.8 34.8 10 348 2
9.1 17.3 290 2639 3
8.8 26.2 310 2734.2 2
11.0 13.7 5.25 57.645 3
11.1 24.8 5.75 63.94 2
61.8 96.6 30 1853.7 217.4 GETR-WU-02 3
120.8 so 6040.5 4
9.0 35.1 330 2966.7 4
11.1 35.9 6.25 69.5625 4
6.6 223.96 62 406.72 5
7.0 42.1 350 2432.5 5
8.9 44.8 6.75 59.805 6
6.3 48.4 370 2331 6
7.8 52.6 7.25 56.405 7
6.4 54.8 390 2480.4 7
7.8 60.4 7.75 60.76 8
6.3 61.1 410 2595.3 8
7.8 68.2 8.25 64.185 9
6.4 67.5 430 2743.4 10 6.3 73.8 450 2844 9
7.7 75.9 8.75 67.725 GETR-WU-02 10 9.2 85.1 9.25 85.0075 11 10.0 83.8 470 4714.1 11 18.1 103.2 8.75 158.4625 12 6.9 90.7 450 3100.5 12 19.7 122.9 8.25 162.2775 13 6.4 97.1 430 2734.8 13 10.9 133.8 7.75 84.5525 14 6.3 103.4 410 2583 GETR-WU-02 14 15.1 148.9 7.25 109.765 15 6.3 109.7 390 2460.9 15 22.6 171.6 6.75 152.685 16 6.5 116.1 370 2390.2 16 19.2 190.8 6.25 120.125 17 6.3 122.4 350 2201.5 17 29.1 219.8 5.75 167.0375 18 6.9 129.4 330 2286.9 18 4.1 223.94 5.25 21.63 19 5.7 135.0 310 1751.5 20 6.2 141.2 290 1809.6 21 6.8 148.0 270 1825.2 22 7.1 155.1 250 1762.5 23 8.0 163.0 230 1835.4 24 7.4 170.4 210 1554 25 18.3 188.8 190 3480.8 26 21.3 210.0 170 3614.2 27 13.9 223.92 150 2086.5 Groundwater Data Source (Formations) -
Sandstone B / Transition Zone/ Alluvium Groundwater Data Source (Formations) -
Sandstone B / Transition Zone/ Alluvium Groundwater Data Source (Formations) -
Sandstone B / Transition Zone I Alluvium Weighted Average =
304 ug/L Weighted Average =
7.03 ug/L Weighted Average =
38.6 ug/L
(
I g/
l l
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I
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.0 - Remediation and Water Treatment Summary Schedule
Table 9-3a Remediation Schedule - Extraction Areas 2021 2022 2023 2024 2025 2026 2027 Remediation Cl) -s E C Area i=
0 Q2 I Q3 I Q4 I Q 2 I Q 31 Q 4 Ql I Q2 I Q3 I Q11Q21 Q31 Q4 Q1,Q2,Q3,Q4 Q11Q21Q3,Q4 Q1,Q2,Q31
~ Ql Q4 Q4 Q4 150 Time to Reduce Uranium to < NRC Criterion BAl-A
>150 Time to Reduce Uranium to< State Criterion 116 Time Uranium Treatment System Operates 150 Time Pumping & Treatment/Injection Continues 45 Time to Reduce Uranium to< NRC Criterion I
BAl-B 63 Time to Reduce Uranium to< State Criterion I
116 Time Uranium Treatment System Operates 150 Time Pumping & Treatment/Injection Continues 41 Time to Reduce Uranium to< State Criterion I
BAl-C 41 Time Uranium Treatment System Operates I
41 Time Pumping & Treatment/Injection Continues I
38
> Time to Reduce Uranium to< NRC Criterion I
>150
) Time to Reduce Uranium to< State Criterion WAA U>DCGL 150 Time Uranium Treatment System Operates 61
) Time to Reduce Nitrate to< State Criterion I
150 150 Q Time Pumping & Treatment/Injection Continues
>150 Time to Reduce Uranium to < State Criterion 150 Time Uranium Treatment System Operates WAA-WEST 0
1-Time to Reduce Nitrate to< State Criterion 150 150 XJTime Pumping & Treatment/Injection Continues 5
)
1-Time to Reduce Uranium to< NRC Criterion 10
)
1-Time to Reduce Uranium to< State Criterion 1206 NORTH 83
) Time Uranium Treatment System Operates 1
1-Time to Reduce Nitrate to< State Criterion 83 83
)((Time Pumping & Treatment/Injection Continues 127
"~Time to Reduce Uranium to< State Criterion 127
)(I Time Uranium Treatment System Operates WU-1348 0
KIi-Time to Reduce Nitrate to< State Criterion 127 127
~ >150 Time to Reduce Uranium to< State Criterion 150 Time Uranium Treatment System Operates WU-PBA 68 Time to Reduce Nitrate to< State Criterion I
150 111;....
150 Time Pumping & Treatment/Injection Continues 0
)
1.---
Time to Reduce Uranium to< State Criterion 150
) Time Uranium Treatment System Operates WAA-BLUFF 149
) Time to Reduce Nitrate to< State Criterion 150 150
)(!Time Pumping & Treatment/Injection Continues
>150 Time to Reduce Uranium to< State Criterion
>150 Time Uranium Treatment System Operates WAA-EAST 150 Time to Reduce Nitrate to< State Criterion 150 I 11;
- 150
)<!Time Pumping & Treatment/Injection Continues Notes: ~
Indicates two month duration for innoculation of nitrate treatment system.
Facility Decommissioning Plan - Rev 1 Or.tnhPr 701R Time of zero indicates duration is less than 1 month.
Pump and treatment durations for the WAA-BLUFF area are based on nitrate concentrations in the combined groundwater extraction influent.
Groundwater extraction in the 1206 north area will continue until the treated water injection in WU-BA3 is discontinued.
2028 2029 2030 2031 2032 2033 Q11Q2,Q31 Q4 Ql I Q2 I Q3 I Q4 Qll Q21 Q3,Q4 Q1,Q2,Q3,Q4 Ql I Q2 I Q3 I Q4 Ql I Q 2 Ii I
I I
I I
I I
I Page 1 of 2
Facility Decommissioning Plan - Rev 1 October 2018 Remediation Area WU-BA3 WU-UPl WU-UP2-SSA Table 9-3b Remediation Schedule - Injection Areas 2020 2021 2022 2023 2024 2025 2026 2027 iii QI.r.
E ~ ---~--~---1--~---------~--~-~--------~----11--~---~---1--~-~-~~-+----~--~--+--~--~-----1 i=
0
~ Ql Q2 Q3 Q4 Ql Q2 Q3 Q4 Ql Q2 Q3 Q4 Ql 49 Time to Reduce Uranium to < NRC Criterion 83 7
83 0
51 51 57 46 57 Notes: ~
Indicates two month duration for innoculation of nitrate treatment system.
Time of zero indicates duration is less than 1 month.
Remediation duration was not calculated for WU-UP2-SSB Q2 Q3 Q4 Ql Q2 Q3 Q4 Ql Q2 Q3 Q4 Ql Q2 Q3 Q4 Ql Q2 Q3 Q4 Page 2 of 2
.1 - Remediation Duration Estimate Calculations: BA 1
Remediation and Water Treatment Duration Estimate Calculations BA1-A ("U>DCGL" Transition Zone/ Sandstone B)
Table 1: Retardation Calculation Bulk Density
~1111)_
Porosity [n] 1 1.81 0.11 Table 2: Remediation Pore Volume Calculation Bulk Saturated Plume Volume [V]3 (ft3)
Porosity [n]1 818,370 0.11 Uranium Kd (ml/g)2 Pore Volume (ft3)
[PV= v*n]
90,021 R = 1 + f!..E. K.
- n.
{::
Retardation [R 50.36 Pore Volume [PV]
(gallons) 673,355 Table 3: Estimated Initial A.9.ueous-Phase Contaminant Concentration Initial Aqueous-Phase Contaminant Concentration Concentration Basis (ug/l)
Remarks Incremental Averaging of Concentrations within Remediation Area 823.62 Average uranium concentration in Area A~
Maximum Representative Concentration within Remediation Area 2,975 Representative uranium concentration for TMW-09 Table 4: Estimated Number of Pore Volumes to Achieve Remediation Goal (180 pCi/L) 50.36 Uranium Cleanup Concentration
{ug/l}4 201 Initial Aqueous-Phase Contaminant Concentration
_(_ug/l)5 2,975 No. of Pore Volumes 6
{#PV = -f\\ ln_(fle_anup/lnit~J 135.7 Remarks Pore volumes required to achieve cleanup goal (DCGL) and discontinue remediation Table 5: Estimated Time to Achieve Remediation Goal (180 p_Ci/L)
No. of Pore Volumes 135.7 Definitions:
ml-milliliters g-gram pCi/L - picocuries per liter ft' - cubic feet Kd - distribution coefficient ug - microgram L - liter gpm - gallons per minute gpd - gallons per day Pore Volume (gallons) 673,355 DCGL - derived cleanup goal level MCL - maximum contaminant level Notes:
Flow Rate
(_g_pm)'
14 Flow Rate
_(_gpd) 20,160 Duration Estimate Duration Estimate (days)L _ __ (months) 4,533 149.1 Remarks Time to achieve cleanup goal (DCGL) and discontinue remediation.
1Assumes 11% transmissve porosity for BAl transition zone, as presented in Environmental Sequence Stratigraphy (ESS) and Porosity Analysis, Burial Area 1, dated April 6, 2018.
2Kd derived from previous studies as mentioned in the Technical Memorandum (TM002), September 10, 2018, page 4.
3Plume volume calculated using Earth Volumtric Studio. includes saturated volume of transition zone and Sandstone B formations within combined capture zone of extraction trenches GETR-BA-01 and GETR-BAl-02, located within area of uranium groundwater contamination exceeding 30 ug/L.
4Remediation will be discontinued when the uranium groundwater concentration reaches 201 ug/L, the equivalent of 180 pCi/L as calculated in Uranium Activity vs. Mass Concentration_Rev. A {07-30-18).xlsx.
5The larger of the following is assumed as initial uranium concentration for estimating the groundwater remediation duration: (1) the maximum representative concentration reported for any well within the remediation area (determined using sampling results for monitoring events conducted from 2011 through Q2 2017), (2) the concentration estimated by conducting incremental averaging of concentrations within the specified treatment area. The incremental averaging is performed using isopleth contours developed using representative groundwater concentrations for monitor wells located within the remediation area (see Iner. AWCA Ca/cs_Rev. C {09-05-18).xlsx ). Initial aqueous-phase contaminant concentrations will be variable.
6Number of pore volumes assumes linear, reversible and instantaneous sorption, and may result in an underestimation of cleanup timeframe estimates.
7Flow rate is based on the nominal combined groundwater recovery rate for extraction trenches GETR-BAl-01 and GETR-BAl-02.
- Remediation durations presented herein are estimates and do not account for all factors contributing to the actua l time required to remediate plumes via groundwater injection and extraction. Estimates will be updated using system performance and
Remediation and Water Treatment Duration Estimate Calculations BA1 -B Area B1 ("U>DCGL" Alluvium)
Table 1: Retardation Calculation Bulk Density
(_g/rril) 1.81 Porosity [n]1 0.3 Table 2: Remediation Pore Volume Calculation Area of Plume [A]
{ft2)
Porosity [ n] 1 128,979 0.3 Uranium Kd (ml/g) 2 Average Plume Thickness [b]3 (ft) 16 Pore Volume (ft3)
[PV = b*n*A]
619,099 R = l + ~Kd Retardation [R 13.07 Pore Volume [PV]
{gallons) 4,630,862 Table 3: Estimated Initial A_g_ueous-Phase Contaminant Concentration Initial Aqueous-Phase Contaminant Concentration Concentration Basis (ug/L)
Remarks Incremental Averaging of Concentrations within Remediation Area 318.6 Average uranium concentration in Area Bl IB Maximum Representative Concentration within Remediation Area 3,516 Representative uranium concentration for TMW-13 Table 4: Estimated Number of Pore Volumes to Achieve Remediation Goal (30 ug/L)
R 13.07 Definitions:
ml -milliliters g - gram ft3 - cubic feet Kd - distribution coefficient ug - microgram L - liter gpm - gallons per minute gpd - gallons per day Uranium Cleanup Concentration
{ug/L) 4 30 DCGL - derived cleanup goal level MCL - maximum contaminant level Initial Aqueous-Phase Notes:
Contaminant Concentration (ug/L) 5 3,516 Flow Rate (fill_m),
66 No. of Pore Volumes 6
[#PV = -R ln{Cleanup/lnitial)]
Remarks Pore volumes required to achieve cleanup goal 62.2 (MCL) and discontinue remediation 1Assumes 30% transmissve porosity for alluvial sand, as presented in the Technical Memorandum (TM002), September 10, 2018, page 3.
2Kd derived from previous studies as mentioned in the Technical Memorandum (TM002), September 10, 2018, page 4.
3Saturated zone thickness assumed to be 16 feet, as presented in the Technical Memorandum (TM002), September 10, 2018, page 5.
4Remediation will be discontinued when the uranium groundwater concentration reaches 30 ug/L.
Days of Area Bl PV (liters)
Q (liters/day)
Remediation 17530908.23 359765.3664 454 cubic foot=
28.3168 liters liters per day=
5451 gallons per min.
5The larger of the following is assumed as initial uranium concentration for estimating the groundwater remediation duration: (1) the maximum representative concentration reported for any well within the remediation area (determined using sampling results for monitoring events conducted from 2011 through Q2 2017), {2) the concentration estimated by conducting incremental averaging of concentrations within the specified treatment area. The incremental averaging is performed using isopleth contours developed using representative groundwater concentrations for monitor wells located within the remediation area (see Iner. AWCA Ca/cs_Rev. C {09-05-18/. xfsx ). Initial aqueous-phase contaminant concent rations will be variable.
6Number of pore volumes assumes linear, reversible and instantaneous sorption, and may result in an underestimation of cleanup timefra me estimates.
7Flow rate is based on the nominal combined groundwater recovery rate for extraction wel ls GE-BAl-02 through GE-BAl-04.
- Remediation durations presented herein are estimates and do not account for all factors contributing to the actual time required to re mediate plumes via groundwater injection and extraction. Estimates will be updated using system performance and groundwater monitoring data collected during the early stages of remedial operations.
Remediation and Water Treatment Duration Estimate Calculations BA1-B Area 82 ("U>DCGL" Alluvium)
Table 1: Retardation Calculation Bulk Density (g/ml) 1.81 Porosity _lrll1 0.3 Table 2: Remediation Pore Volume Calculation Area of Plume [A]
(ft')
Porosity [n]1 93,027 0.3 Uranium Kd (ml/g
Average Plume Thickness [b]
3 1ft) 16 Pore Volume (ft3)
IPV = b*n*A]
446,530 R = l +~ fia n
Retardation IN 13.07 Pore Volume [PV]
(11allonsl 3,340,041 Table 3: Estimated Initial A.9.ueous-Phase Contaminant Concentration Initial Aqueous-Phase Contaminant Concentration Concentration Basis (ug/L)
Incremental Averaging of Concentrations within Remediation Area 204.3 Maximum Representative Concentration within Remediation Area 1,722.2 Remarks Average uranium concentration in Area B2 at remediation time't' Representative uranium concentration forTMW-13 at remediation time 't' Area-weighted B2 cone. @t=0 417.05 1 aoIe -.: t.sumateo Numoer or i-ore voIumes to Acmeve 1temeaIauon uoaI 1~u u II.ILi R
13.07 Definitions:
ml-milliliters g-gram ft3 - cubic feet Kd - distribution coefficient ug - microgram L-liter gpm - gallons per minute gpd - gallons per day Uranium Cleanup Concentration (ug/Ll' 30 DCGL - derived cleanup goal level MCL - maximum contaminant level Initial Aqueous-Phase Notes:
Contaminant Concentration (ug/Lls 1,722 Flow Rate pm)7 66 No. of Pore Volumes6
[#PV = -R ln(Cleanuo/lnitial)]
Remarks Pore volumes required to achieve cleanup goal 52.9 (MCL) and discontinue remediation 1Assumes 30% transmissve porosity for alluvial sand, as presented in the Technical Memorandum (TM002), September 10, 2018, page 3.
2Kd derived from previous studies as mentioned in the Technical Memorandum (TM002), September 10, 2018, page 4.
'saturated zone thickness assumed to be 16 feet, as presented in the Technical Memorandum (TM002), September 10, 2018, page 5.
4Remediation will be discontinued when the uranium groundwater concentration reaches 30 ug/L.
Days of Area 82 Days of Area Bl+
PV(liters)
Q (liters/day)
Remediation 82 Remediation 12644289.38 359765.3664 771 1,226 cubic foot=
28.3168 liters liters per day=
5451 gallons per min.
5The larger of the following is assumed as initial uranium concentration for estimating the groundwater remediation duration: (1) the maximum representative concentration reported for any well within the remediation area (det ermined using sampling results for monitoring events conducted from 2011 through Q2 2017), (2) the concentration estimated by conducting incremental averaging of concentrations within the specified treatment area. The incremental averaging is performed using isopleth contours developed using representative groundwater concentrations for monitor wells located within the remediation area (see Iner. AWCA Ca/cs_Rev. C {09-05-18}.xlsx ). Initial aqueous-phase contaminant concentrations will be variable.
6Number of pore volumes assumes linear, reversible and instantaneous sorption, and may result in an underestimation of cleanup timeframe estimates.
7Flow rate is based on the nominal combined groundwater recovery rate for extraction wells GE-BAl-02 through GE-BAl-04.
- Remediation durations presented herein are estimates and do not account for all factors contributing to the actual time required t o remediate plumes via groundwater injection and extraction. Estimates will be updated using system performance and groundwater monitoring data collected during the early stages of remedial operations.
Remediation and Water Treatment Duration Estimate Calculations BA1-B Area 83 ("U>DCGL" Alluvium)
Table 1: Retardation Calculation Bulk Density
{g/ml 1.81 Porosity l!!.11 0.3 Table 2: Remediation Pore Volume Calculation Area of Plume [A)
(ft2)
Porosity [n]1 76,285 0.3 Concentration Basis Incremental Averaging of Concentrations within Remediation Area Maximum Representative Concentration within Remediation Area Uranium~
mlj-'2 Average Plume Thickness [b)3
{ft) 16 Initial Aqueous-Phase Contaminant Concentration (ug/L) 33.6 321.0 R = 1 +~ J<.,
ti
~
Retardation IBl 13.07 Pore Volume {ft3)
Pore Volume [PV)
[PV = b*n*A)
(gallons) 366,168 2,738,937 Remarks Average uranium concentration in Area B3 at remediation time't' Representative uranium concentration for TMW-13 at remediation t ime 't' Area-weighted B3 cone. @t=0 485.53 1 ao1e 4: tstimatea Numoer or l'ore vo1umes to Acmeve Kemeaiauon 1:1oa1 (.:SU u IULJ R
13.07 Definitions:
ml-milliliters g-gram ft 3
- cubic feet Kd - distribution coefficient ug - microgram L - liter gpm - gallons per minute gpd - gallons per day Uranium Cleanup Concentration (uR/Ll4 30 DCGL - derived cleanup goal level MCL - maximum contaminant level Initial Aqueous-Phase Notes:
Contaminant Concentration (uR/Ll5 321 Flow Rate m'1 66 No. of Pore Volumes6
[#PV = -R ln(Cleanup/lnitiall)
Remarks Pore volumes required to achieve cleanup goal 31.0 (MCL) and discontinue remediation
'Assumes 30% transmissve porosity for alluvial sand, as presented in the Technical Memorandum (TM002), September 10, 2018, page 3.
2Kd derived from previous studies as mentioned in the Technical Memorandum (TM002), September 10, 2018, page 4.
3Saturated zone thickness assumed to be 16 feet, as presented in the Technical Memorandum (TM002), September 10, 2018, page 5.
4Remediation will be discontinued when the uranium groundwater concentration reaches 30 ug/L.
Days of Area B3 Days of Area Bl+ B2 PV {liters)
Q {liters/day)
Remediation
+ B3 Remediation 10368706.02 359765.3664 0
1,226 cubic foot=
28.3168 liters liters per day=
5451 gallons per min.
5The larger of the following is assumed as initial uranium concentration for estimating the groundwater remediation duration: (1) the maximum representative concentration reported for any well within the remediation area (determined using sampling results for monitoring events conducted from 2011 through Q2 2017), (2) the concentration estimated by conducting incremental averaging of concentrations within the specified treatment area. The incremental averaging is performed using isopleth contours developed using representative groundwater concentrations for monitor wells located within the remediation area (see Iner. AWCA Calcs_Rev. C (09-05-18}.xlsx ). Initial aqueous-phase contaminant concentrations will be variable.
6Number of pore volumes assumes linear, reversible and instantaneous sorption, and may result in an underestimation of cleanup t imeframe estimates.
7Flow rate is based on the nominal combined groundwater recovery rate for extraction wells GE-BAl-02 through GE-BAl-04.
- Remediation durations presented herein are estimates and do not account for all factors contributing to the actual time required to remediate plumes via groundwater injection and extraction. Estimates will be updated using system performance and groundwater monitoring data collected during the early stages of remedial operations.
Remediation and Water Treatment Duration Estimate Calculations BA1-B Area B3R ("U>DCGL" Alluvium)
Table 1: Retardation Calculation Bulk Density ml 1.81 Porosi!YJ.rtl 1
0.3 Table 2: Remediation Pore Volume Calculation Area of Plume (A)
{ft')
Porosity (nl1 76,285 0.3 Concentration Basis Uranium Kd mlfgl Average Plume Thickness (bl 3
{ft) 16 Initial Aqueous-Phase Contaminant Concentration (ug/L)
R = l + ~
Kc Retardation IBl 13.07 Pore Volume {ft3)
Pore Volume (PVI (PV= b*n*AI
{gallons) 366,168 2,738,937 Remarks Incremental Averaging of Concentrations within Average uranium concentration in Area B3 at remediation Remediation Area 18.7 time 1t' Maximum Representative Concentration within Representative uranium concentration for TMW-13 at Remediation Area 321 remediation time 't' Table 4a: Estimated Number of Pore Volumes to Achieve Remediation Goal {180 pCi/L)
Uranium Cleanup Initial Aqueous-Phase No. of Pore Volumes6
~
Concentration Contaminant Concentration
(#PV =-R E
R (ug/L)4 (ug/L)5 ln{Cleanup/lnitial))
~
13.07 201 321 6.1 C
0
~
Table Sa: Estimated Time to Achieve Remediation Goal (180 pCi/L) 0 i'iJ Pore Volume Flow Rate Flow Rate u
0 No. of Pore Volumes (l!allons)
{1!Pml 7
{i!Pd) 6.1 2,738,937 86 123,840 Table 4b: Estimated Number of Pore Volumes to Achieve Remediation Goal 130 Ui!/Ll Uranium Cleanup Initial Aqueous-Phase No. of Pore Volumes6
~
Concentration Contaminant Concentration
(#PV= -R E
R (ug/L)4
{u11/L15 ln(Cleanup/lnitial)I
~
13.07 30 321 31.0 C
0
~
Table Sb: Estimated Time to Achieve Remediation Goal (180 DCi/Ll 0
Pore Volume Flow Rate Flow Rate d
- E No. of Pore Volumes (gallons)
(gpm)1 (gpd) 31.0 2,738,937 86 123,840 Notes:
Remarks Pore volumes required to achieve cleanup goal (DGCL) and Duration Estimate Duration Estimate {davs)
{months) 135 4.5 Remarks Pore volumes required to achieve cleanup goal (MCL) and Duration Estimate Duration Estimate (days)
(months) 685 22.6 Definitions:
ml-milliliters g-gram 1Assumes 30% transmissve porosity for alluvial sand, as presented in the Technical Memorandum (TM002), September 10, 2018, page 3.
2Kd derived from previous studies as mentioned in the Technical Memorandum {TM002), September 10, 2018, page 4.
ft3 - cubic feet Kd - distribution coefficient 3Saturated zone thickness assumed to be 16 feet, as presented in the Technical Memorandum (TM002), September 10, 2018, page 5.
4Remediation will be discontinued when the uranium groundwater concentration reaches 30 ug/L.
Remarks Time to achieve cleanup goal (DGCL) and discontinue remediation.
Remarks Time to achieve cleanup goal (MCL) and discontinue remediation.
Area-weighted B3 cone.@ t=O 485.53 ug - microgram pCi/L - picocuries per liter L-liter gpm - gallons per minute gpd - gallons per day 5The larger of the following is assumed as initial uranium concentration for estimating the groundwater remediation duration: (1) the maximum representative concentration reported for any well within the remediation area (determined using sampling results for monitoring events conducted from 2011 through Q2 2017), (2) the concentration estimated by conducting incremental averaging of concentrations within the specified treatment area. The incremental averaging is performed using isopleth contours developed using representative groundwater concentrations for monitor wells located within the remediation area {see Iner. AWCA Calcs_Rev. C {09-05-18}.xlsx ). Initial aqueous-phase contaminant concentrations will be variable.
DCGL - derived cleanup goal level MCL - maximum contaminant level 6Number of pore volumes assumes linear, reversible and instantaneous sorption, and may result in an underestimation of cleanup timeframe estimates.
7Flow rate is based on the nominal combined groundwater recovery rate for extraction wells GE-BAl-02 through GE-BAl-04.
- Remediation durations presented herein are estimates and do not account for all factors contributing to the actual time required to remediate plumes via groundwater injection and extraction. Estimates will be updated using system performance and groundwater monitoring data collected during the early stages of remedial operations.
Remediation and Water Treatment Duration Estimate Calculations BA1-C Area C1 ("U<DCGL" Alluvium)
Table 1: Retardation Calculation Bulk Density
{g/ml) 1.81 Porosity [n] 1 0.3 Table 2: Remediation Pore Volume Calculation Area of Plume [A]
(ft2)
Porosity [n]1 43,933 0.3 R = l + ~Kd Uranium Kd (ml/gJ2 Retardation [R 13.07 Average Plume Thickness [b]3 Pore Volume (ft3)
Pore Volume [PV]
(ft)
(PV= b*n*A]
(gallons) 19 250,418 1,873,127 Table 3: Estimated Initial A_g_ueous-Phase Contaminant Concentration Initial Aqueous-Phase Contaminant Concentration Concentration Basis (ug/L)
Remarks Incremental Averaging of Concentrations within Remediation Area 37.5 Average uranium concentration in Area Cll?l Maximum Representative Concentration within Remediation Area 51.21 Representative uranium concentration for 1373 Table 4: Estimated Number of Pore Volumes to Achieve Remediation Goal (30 uB{L)
Initial Aqueous-Phase Uranium Cleanup Contaminant Concentration Concentration No. of Pore Volumes6 R
(ug/L)4 (ug/L)5
[#PV = -R ln(Cleanup/lnitiall]
Remarks Pore volumes required to achieve cleanup goal Days of Area Cl 13.07 30 51 7.0 (MCL) and discontinue remed iation PV (liters)
Q (liters/day)
Remediation 7091039.254 109019.808 454 Table 5: Estimated Time to Achieve Remediation Goal (180 _!)_Ci/L) cubic foot =
28.3168 liters No. of Pore Volumes
7.0 Definitions
ml-milliliters g-gram ft 3
- cubic feet Kd - distribution coefficient ug - microgram pCi/L - picocuries per liter L-liter gpm - gallons per minute gpd - gallons per day Pore Volume (gallons) 1,873,127 DCGL - derived cleanup goal level MCL - maximum contaminant level Flow Rate Flow Rate Duration Estimate (gpm)1 (gpd)
Duration Estimate (days)
(months)
Remarks Time to achieve cleanup goal (MCL) and discontinue 20 28,800 454 15.0 remediation.
Notes:
1Assumes 30% transmissve porosity for alluvial sand, as presented in the Technica l Memorandum (TM002), September 10, 2018, page 3.
2 Kd derived from previous studies as mentioned in the Technical Memorandum (TM002), September 10, 2018, page 4.
3Saturated zone thickness assumed to be 19 feet, as presented in the Technical Memorandum (TM002), September 10, 2018, page 5.
4Remediation will be discontinued when the uranium groundwater concentration reaches 30 ug/L.
liters per day=
5451 gallons per min.
5The larger of the following is assumed as initial uranium concentration for estimating the groundwater remediation duration: (1) the maximum representative concentration reported for any well within the remediation area (determined using sampling results for monitoring events conducted from 2011 through Q2 2017), (2) the concentration estimated by conducting incremental ave raging of concentrations within the specified treatment area. The incremental averaging is performed using isopleth contours de*,eloped using represe ntative groundwater concentrations for monitor wells located within the remediation area (see Iner. AWCA Ca/cs_Rev. C /09-05-18}.xlsx ). Initial aqueous-phase contaminant concentrations will be variable.
6Number of pore volumes assumes linear, reversible and instantaneous sorption, and may result in an underestimation of cleanup timeframe estimates.
7Flow rate is based on the nominal combined groundwater recovery rate for extraction wells GE-BAl-08 and GE-BAl-09.
- Remediation durations presented herein are estimates and do not account for all factors contributing to the actual time required to remediate plumes via groundwater injection and extraction. Estimates will be updated using system performance and groundwater monitoring data collected during the early stages of remedial operations.
Remediation and Water Treatment Duration Estimate Calculations BA1-C Area C2 ("U<DCGL" Alluvium)
Table 1: Retardation Calculation Bulk Density (g/ml) 1.81 Porosi_ty_ln)1 0.3 Table 2: Remediation Pore Volume Calculation Area of Plume [A)
(ft' )
Porosity [nJ1 79,885 0.3 Uranium K,,
(ml/g)'
Average Plume Thickness [b) 3 (ft) 19 Pore Volume (ft3)
[PV = b*n*A]
455,345 R=l + E2rc n
- a.
Retardation.IBl 13.07 Pore Volume [PV)
(gallons) 3,405,977 Table 3: Estimated Initial A.9_ueous-Phase Contaminant Concentration Initial Aqueous-Phase Contaminant Concentration Concentration Basis (ug/l)
Remarks 1365 cone. @ t=O C2 cone. @ t=O Incremental Averaging of Concentrations within Average uranium concentration in Area C2 at remediation Remediation Area 28.9 time 1t' 100.9 49.36 Representative uranium concentration for 1365 at Maximum Representative Concentration within remediation time 't'.
Remediation Area 49.42 Note: 1365 is located within Area Bl.
Table 4: Estimated Number of Pore Volumes to Achieve Remediation Goal (30 ug/L)
Initial Aqueous-Phase Uranium Cleanup Contaminant Concentration Concentration No. of Pore Volumes6 R
(ug/L)'
(ug/L)5
[#PV = -R ln(Cleanup/lnitial)]
Remarks Pore volumes required t o achieve cleanup goal Days of Area C2 Days of Area Cl + C2 13.07 30 49.42 6.5 (MCL) and discontinue remediation PV (liters)
Q (liters/day)
Remediation Remediation 12,893,899.14 109,019.81 771.43 1,226 Table 5: Estimated Time to Achieve Remediation Goal (180 pCi/ll cubic foot =
28.3168 liters No. of Pore Volumes 6.5229904 Definitions:
ml-milliliters g -gram h
3
- cubicfeet K* - distribution coefficient ug - microgram pCi/ L - picocuries per liter L - liter gpm - gallons per minute gpd - gallons per day Pore Volume (gallons) 3,405,977 DCGL - derived cleanup goal level MCL - maximum contaminant level Flow Rate Flow Rate Duration Estimate (gpm)'
(gpd)
Duration Estimate (days)
(months)
Remarks Time to achieve cleanup goal (MCL) 20 28,800 771 25.4 and discontinue remediat ion.
Notes:
' Assumes 30% transmissve porosity for alluvial sand, as presented in the Technical Memorandum (TM002), September 10, 2018, page 3.
' K* derived from previous studies as mentioned in the Technical Memorandum (TM002), September 10, 2018, page 4.
' saturated zone thickness assumed to be 19 feet, as presented in the Technical Memorandum (TM002), September 10, 2018, page 5.
4Remediation will be discontinued when the uranium groundwater concentration reaches 30 ug/L.
liters per day=
5451 gallons per min.
5The larger of the following is assumed as initial uranium concentration for estimating the groundwater remediation duration: (1) the maximum representat ive concent ration reported for any well within the remediation area (determined using sampling results for monitoring events condu cted from 2011 through Q2 2017), (2) the concentration estimated by conducting incremental averaging of concentrations within the specified treatment area. The incremental averaging is performed using isopleth contours developed using representative groundwater concentrations for monitor wells located within the remediation area (see Iner. AWCA Ca/cs_Rev. C {09-05-18).x/sx ). Initial aqueous-phase contaminant concentrations will be variable.
6Number of pore volumes assumes linear, reversible and instantaneous sorption, and may result in an underestimation of cleanup timeframe estimates.
7Flow rate is based on the nominal combined groundwater recovery rate for extraction wells GE-BAl-08 and GE-BAl-09.
- Remediation durations presented herein are estimates and do not account for all factors contributing to the actual time required to remediate plumes via ground water injection and extraction. Est imates will be updated using system performance and groundwater monitoring data collected during the early stages of remedial operations.
Remediation and Water Treatment Duration Estimate Calculations BA1-C Area C3 ("U<DCGL" Alluvium)
Table 1: Retardation Calculation Bulk Density (g/ml) 1.81 Porosity [n]1 0.3 Table 2: Remediation Pore Volume Calculation Area of Plume [A]
(ft2)
Porosity [n]1 96,627 0.3 Uranium Kd (ml/g)2 Average Plume Thickness [b]
3 (ft) 19 R = l+ ~
K -
n a
Retardation {R]
13.07 Pore Volume (ft3)
Pore Volume [PV]
[PV = b*n*A]
(gallons) 550,774 4,119,789 Table 3: Estimated Initial A_g_ueous-Phase Contaminant Concentration Initial Aqueous-Phase Contaminant Concentration Concentration Basis (ug/L)
Remarks Incremental Averaging of Concentrations within Average uranium concentration in Area C2 at remediation 1361 cone.
Remediation Area 26.7 time 't'
@ t=O C3 cone. @ t=O Representative uranium concentration for 1361 at Maximum Representative Concentration within remediation time 't'.
Remediation Area 11.98 Note: 1361 is located within Area Bl.
172.9 59.01 Table 4: Estimated Number of Pore Volumes to Achieve Remediation Goal (30 u_g_/L)
R 13.07 No. of Pore Volumes
0.0 Definitions
ml-milliliters g-gram ft 3
- cubic feet Kd - distribution coefficient ug - microgram pCi/L - picocuries per liter L - liter gpm - gallons per minute gpd - gallons per day Uranium Cleanup Concentration (ug/L) 4 30 d
Pore Volume (llallonsl 4,119,789 DCGL - derived cleanup goal level MCL - maximum contaminant level Initial Aqueous-Phase Contaminant Concentration No. of Pore Volumes 6
(ug/L)5
[#PV = -R ln(Cleanup/lnitial)]
Remarks Pore volumes required to achieve cleanup goal 26.69 0.0 (MCL) and discontinue remediation I{
/Ll Flow Rate Flow Rate Duration Estimate lllPml1 (gpd)
Duration Estimate (days)
(months)
Remarks Time to achieve cleanup goal (MCL) 20 28,800 0
0.0 and discontinue remediation.
Notes:
1Assumes 30o/c transmissve porosity for alluvial sand, as presented in the Technical Memorandum (TM002), September 10, 2018, page 3.
2Kd derived from previous studies as mentioned in the Technical Memorandum (TM002), September 10, 2018, page 4.
3Saturated zone thickness assumed to be 19 feet, as presented in the Technical Memorandum (TM002), September 10, 2018, page 5.
4Remediation will be discontinued when the uranium groundwater concentration reaches 30 ug/L.
5The larger of the following is assumed as initial uranium concentration for estimating the groundwater remediation duration: (1) the maximum representative concentration reported for any well within the remediation area (determined using sampling results for monitoring events conducted from 2011 through Q2 2017), (2) the concentration estimated by conducting incremental averaging of concentrations within the specified treatment area. The incremental averaging is performed using isopleth contours developed using representative groundwater concentrations for monitor wells located within the remediation area (see Iner. AWCA Ca/cs_Rev. C {09-05-18}.xlsx ). Initial aqueous-phase contaminant concentrations will be variable.
6Number of pore volumes assumes linear, reversible and instantaneous sorption, and may result in an underestimation of cleanup timeframe estimates.
7Flow rate is based on the nominal combined groundwater recovery rate for extraction wells GE-BAl -08 and GE-BAl-09.
- Remediation durations presented herein are estimates and do not account for all factors contributing to the actual time required to remediate plumes via groundwater injection and extraction. Estimates will be updated using system performance and groundwater monitoring data collected during the early stages of remedial operations.