ML23251A213

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Enclosure 2: Figures and Maps Referenced in Enclosure 1
ML23251A213
Person / Time
Site: 07000925
Issue date: 10/02/2023
From: James Smith
NRC/NMSS/DDUWP/URMDB
To: Halliburton B
Cimarron Environmental Response Trust
Shared Package
ML23251A211 List:
References
Download: ML23251A213 (1)
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© MONITOR WELL IN SANDSTONE B MONITOR WELL IN SANDSTONE C MONITOR WELL IN TRANSITION ZONE EXTRACTION WELL/SUMP

1) WHITE BACKGROUND ON MONITOR WELL INDICATES IN-PROCESS MONITORING LOCATION.
2) BASEMAP: GOOGLE EARTH 2017 INJECTION WELL GROUNDWATER EXTRACTION PIPING TREATED WATER INJECTION PIPING GROUNDWATER EXTRACTION TRENCH TREATED WATER INJECTION TRENCH 100 SCALE IN FEET 200 FIGURE 8-8 BURIAL AREA #1 IN-PROCESS GROUNDWATER MONITORING LOCATIONS FACILITY DECOMMISSIONING PLAN REVISION 3

^BURNS VWMSDONNELL environmental properties management, LLC Rev No: 0 Preparer: TJKIMMEL Date: 9/9/2022 Reviewer: EDULLE Date: 9/9/2022 Coordinate System NAD 1983 StatePlane Oklahoma North FIPS 3501 Feet Water level elevations must be monitored in this general area before and during groundwater extraction from the trenches in order to determine the horizontal extent of the induced drawdown.

This area, approximately 200' long and 60 to 75' wide at the eastern end, has no in-process monitoring locations for groundwater elevation measurements or sampling for uranium concentrations within the Transition Zone. In order to ensure the effectiveness of the injection &

extraction system of trenches, monitoring points will be required in this general area.

The horizontal extent of the extraction system at steady state was not determined during the 2018 Pilot Testing of the GETR-BA1-01A trench.

Approximate western edge of Transition Zone Soils.

2022 BURNS & McDONNELL ENGINEERING COMPANY, INC.

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FIGURE 4-3 BA1 GROUNDWATER FLOW MODEL MODPATH PARTICLE TRACKING RESULTS NEAR TRENCHES SITE FACILITY DECOMMISSIONING PLAN (REVISION 3)

^BURNS xS. MCDONNELL.

environmental properties management, lie Rev No: 0 Preparer: BELOCKWOOD Date: 9/20/2022 Reviewer: DCLEMENT Date: 9/20/2022 Coordinate System WGS 1984 Web Mercator Auxiliary Sphere LEGEND MONITOR WELL IN ALLUVIUM MONITOR WELL IN SANDSTONE B MONITOR WELL IN SANDSTONE C MONITOR WELL IN TRANSITION ZONE EXTRACTION WELL/SUMP INJECTION WELL GROUNDWATER EXTRACTION TRENCH GROUNDWATER INJECTION TRENCH BA1 URANIUM CONTOUR (30 UG/L)

PARTICLE TRACKING

-V PARTICLE FLOW DIRECTION ARROWS PUMPING HEAD CONTOURS (1 FT)

PUMPING HEAD CONTOURS (0.5 FT)

TRENCH MODEL CELLS NOTES

1) GROUNDWATER ELEVATIONS IN FEET ABOVE MEAN SEA LEVEL (NORTH AMERICAN VERTICAL DATUM OF 1988).
2) BASEMAP: GOOGLE EARTH 2017 TMW-08 Exhibits Highest Uranium Concentrations in Sandstone B Wells (2,589 ug/L).

If the Particle Tracks for Injection Trench GWI-BA1-01 trend more to the east or east-northeast than shown in this model run, the influence of the injection/flushing of the TMW-08 area may be reduced.

Additionally, the presence of preferential pathways north of the injection trench in the direction of well 1409 (see black arrow) noted in the 2018 Pilot Test Report, may further complicate predicting the areal influence and direction of the migration of the injected water.

2022 BURNS & McDONNELL ENGINEERING COMPANY, INC.

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SCALE'iN,FEET FIGURE 3-2 BA1 GROUNDWATER FLOW MODEL CALIBRATED MODEL HEADS / RESIDUALS SITE FACILITY DECOMMISSIONING PLAN (REVISION 3)

BURNS

^MSDONNELL.

environmental properties management, uc Rev No: 0 Preparer: BELOCKWOOD Date: 9/20/2022 Reviewer: DCLEMENT Date: 9/20/2022 Coordinate System WGS 1984 Web Mercator Auxiliary Sphere LEGEND MONITOR WELL IN ALLUVIUM MONITOR WELL IN SANDSTONE B MONITOR WELL IN SANDSTONE C MONITOR WELL IN TRANSITION ZONE BA1 URANIUM CONTOUR (30 UG/L)

NON-PUMPING HEAD CONTOURS (1 FT) FROM LAYER '

y ACTIVE MODEL DOMAIN GENERAL HEAD BOUNDARY CELLS RIVER BOUNDARY CELLS NO FLOW BOUNDARIES NOTES

1) GROUNDWATER ELEVATIONS IN FEET ABOVE MEAN SEA LEVEL (NORTH AMERICAN VERTICAL DATUM OF 1988).
2) BASEMAP: GOOGLE EARTH 2017 Sandstone B Wells Area of Concern (within Red Oval) -

Model Generated Head Values Model Overestimated Head Values for Circled Wells by ~

1.9 to 3.4 feet.

Model Calibration Data Set Omitted Well 02W51 in the Same Area (see blue arrow) which Exhibited the Highest Observed Water Level Elevation in BA-1 Area.

Typically Ranging from ~950 to 954' in Elevation.

The Southernmost Well (1314; see black arrow) Typically Ranged from ~943' to 945' in Elevation.

This Calibration Likely Underestimates the Easterly to East-Northeasterly Groundwater Flow Direction in this Area which Includes the Injection Trench GWI-BA1-01.

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1) WHITE BACKGROUND ON MONITOR WELL INDICATES POST-REMEDIATION MONITORING LOCATION.
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FIGURE 8-10 BURIAL AREA #1 POST-REMEDIATION GROUNDWATER MONITORING LOCATIONS FACILITY DECOMMISSIONING PLAN REVISION 3

^BURNS

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environmental properties management. ILC Rev No: 0 Preparer: TJKIMMEL Date: 9/9/2022 Reviewer: EDULLE Date: 9/9/2022 Coordinate System NAD 1983 StatePlane Oklahoma North FIPS 3501 Feet

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