Text

NRC Review RAI Responses Cimarron Gw, Figs-Tables January 30, 2024
	ML24046A198
Person / Time
Site:	07000925
Issue date:	01/30/2024
From:	; Cimarron Environmental Response Trust
To:	; NRC/NMSS/DDUWP/URMDB
Shared Package
ML24046A190	List: ML24046A197; ML24046A198;
References
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Cimarron Environmental Response Trust Response to October 2, 2023, RAIs Table GWRM-1 Uranium Concentrations in BA1 Soils Prepared by:Stephen Wood Date:11/14/2023 Reviewed by:Jim Feild Date:11/14/2023 Sample Station Northing (feet)

Easting (feet)

Depth (feet)

Sample Length (feet)

Total U (pCi/g)

Soil Concentrations Less than

Background

<7 pCi/g Soil Concentrations Between 7-9 pCi/g Soil Concentrations Above

Background

>9 pCi/g Very Low Permeability (Bedrock)

Low Permeability (Clay)

Medium Permeability (Silt)

High Permeability (Sand)

Notes 907 1222 8

4 6.1 X

X Clay and sand layers between 8 and12 feet bgs 907 1222 15 5

3.0 X

X Clay and sand layers between 15 and 20 ft bgs 915 1225 0

1 2.7 X

X 915 1225 1

1 2.9 X

X 915 1225 2

1 2.8 X

X 915 1225 3

1 7.4 X

X 915 1225 4

1 9.6 X

X 915 1225 5

1 12.8 X

X 915 1225 6

1 12.8 X

X 915 1225 7

1 8.6 X

X 915 1225 8

1 8.0 X

X 915 1225 9

1 7.7 X

X 915 1225 10 1

5.8 X

X 915 1225 11 1

5.1 X

X 915 1225 12 1

3.2 X

X 915 1225 13 1

3.1 X

X X

915 1225 14 1

4.1 X

X 915 1225 15 1

3.1 X

X 915 1225 16 1

2.6 X

X 915 1225 17 1

2.4 X

X 917 1202 8

5 9.1 X

X Clay and sand layers between 8 and 13 ft bgs 917 1202 15 3

2.6 X

X No boring log info 923 1189 3

2 3.3 X

X 923 1189 9

1 3.4 X

X 923 1189 10 5

4.1 X

X 923 1189 15 1

1.6 X

X 936 1186 5

5 3.0 X

X Clay and sand layers between 5 and 10 ft bgs 936 1186 10 5

2.1 X

X 955 1182 0

1 2.2 X

X 955 1182 1

1 2.9 X

X 955 1182 2

1 3.3 X

X 955 1182 3

1 2.4 X

X 955 1182 4

1 1.8 X

X 955 1182 5

5 2.5 X

X 955 1182 20 1.5 1.2 X

X 954 1193 5

5 2.9 X

X Clay and sand layers between 5 and 10 feet 954 1193 10 5

2.0 X

X 954 1193 15 5

2.3 X

X 954 1193 20 2

0.8 X

X 02W05 02W06 02W07 02W01 02W02 02W03 02W04 Source: Burial Area #1 Groundwater Assessment Report January 2003 Page 1 of 8

@ 6' BGS-Silty Clay - Not High Permeability Sand Silt with Very Fine Sand above and Clay, hard, dense below.

Sand, very fine above and Clay soft below ATTACHMENT 1

Cimarron Environmental Response Trust Response to October 2, 2023, RAIs Table GWRM-1 Uranium Concentrations in BA1 Soils Prepared by:Stephen Wood Date:11/14/2023 Reviewed by:Jim Feild Date:11/14/2023 Sample Station Northing (feet)

Easting (feet)

Depth (feet)

Sample Length (feet)

Total U (pCi/g)

Soil Concentrations Less than

Background

<7 pCi/g Soil Concentrations Between 7-9 pCi/g Soil Concentrations Above

Background

>9 pCi/g Very Low Permeability (Bedrock)

Low Permeability (Clay)

Medium Permeability (Silt)

High Permeability (Sand)

Notes 956 1208 0

1 2.6 X

X 956 1208 1

1 2.8 X

X 956 1208 2

1 2.9 X

X 956 1208 3

1 1.8 X

X 956 1208 4

1 2.4 X

X 956 1208 10 1

3.6 X

X 956 1208 11 1

3.1 X

X 956 1208 12 1

2.5 X

X 956 1208 13 1

2.2 X

X 956 1208 14 1

2.7 X

X 956 1208 15 1

1.4 X

X 956 1208 16 1

2.7 X

X 956 1208 17 1

1.9 X

X 956 1208 18 1

1.5 X

X 956 1208 20 1

3.1 X

X 956 1208 21 1

3.7 X

X 956 1208 22 1

2.1 X

X 879 1269 8.5 5

1.8 X

X 879 1269 17.5 5

1.9 X

X 899 1264 7.5 5

2.2 X

X 899 1264 15.5 5

3.3 X

X 969 1222 8

1 2.9 X

X 969 1222 20 5

1.6 X

X 963 1226 8

5 2.3 X

X Sand and clay layers between 8 and 13 ft bgs 963 1226 20 5

1.5 X

X 947 1234 7

5 2.4 X

X One sand layer, but mostly clay 947 1234 19 5

1.6 X

X 1' clay, sand, 1' mudstone at bottom 969 1208 8

5 3.2 X

X Sand and clay layers between 8 and 13 ft bgs 969 1208 21 5

1.7 X

X 02W15 921 1174 9.5 2.5 1.8 X

X 936 1170 8

2 1.9 X

X Half sand, half clay 936 1170 15 2

2.1 X

X 1' sand, 1' mudstone 955 1167 8

5 2.2 X

X 955 1167 15 7.5 1.3 X

X 955 1167 22.5 0.5 0.6 X

X 981 1194 0

1 2.2 X

X 981 1194 1

1 2.6 X

X 981 1194 2

1 2.7 X

X 981 1194 3

1 1.8 X

X 981 1194 4

1 2.0 X

X 981 1194 5

1 2.0 X

X 981 1194 6

1 1.8 X

X 981 1194 10 5

3.0 X

X 981 1194 15 5

1.5 X

X 981 1194 25 0.5 0.8 X

X 981 1194 25.5 0.5 0.3 X

X 02W13 02W14 02W16 02W17 02W18 02W09 02W10 02W08 02W11 02W12 Source: Burial Area #1 Groundwater Assessment Report January 2003 Page 2 of 8 ATTACHMENT 1

Cimarron Environmental Response Trust Response to October 2, 2023, RAIs Table GWRM-1 Uranium Concentrations in BA1 Soils Prepared by:Stephen Wood Date:11/14/2023 Reviewed by:Jim Feild Date:11/14/2023 Sample Station Northing (feet)

Easting (feet)

Depth (feet)

Sample Length (feet)

Total U (pCi/g)

Soil Concentrations Less than

Background

<7 pCi/g Soil Concentrations Between 7-9 pCi/g Soil Concentrations Above

Background

>9 pCi/g Very Low Permeability (Bedrock)

Low Permeability (Clay)

Medium Permeability (Silt)

High Permeability (Sand)

Notes 969 1188 7.5 7.5 2.1 X

X 969 1188 15 5

2.4 X

X 846 1292 0

1 2.2 X

X 846 1292 1

1 3.6 X

X 846 1292 2

1 3.0 X

X 846 1292 3

1 3.2 X

X 846 1292 4

1 2.5 X

X 846 1292 5

1 1.8 X

X 846 1292 6

1 2.9 X

X 846 1292 7

1 2.1 X

X 846 1292 8

1 3.0 X

X 846 1292 9

1 2.1 X

X 846 1292 10 1

1.9 X

X 846 1292 11 1

2.3 X

X 846 1292 12 1

2.6 X

X 846 1292 13 1

2.5 X

X 846 1292 14 1

2.8 X

X 846 1292 15 1

0.4 X

X 846 1292 16 1

2.0 X

X 846 1292 17 1

1.8 X

X 846 1292 18 1

1.8 X

X 846 1292 19 1

2.8 X

X 846 1292 20 1

0.4 X

X 846 1292 21 1

1.9 X

X 846 1292 22 1

1.9 X

X 970 1149 0

5 2.7 X

970 1149 11 1.5 1.3 X

970 1149 20 5

1.9 X

933 1154 0

5 1.2 X

933 1154 8

5 2.0 X

955 1152 9.5 5.5 1.0 X

955 1152 20 2.5 1.9 X

969 1167 9

7 1.8 X

969 1167 23 1

1.8 X

969 1167 24 1

2.2 X

969 1167 25 0.5 1.4 X

02W20 02W21 02W22 02W23 02W24 02W19 Source: Burial Area #1 Groundwater Assessment Report January 2003 Page 3 of 8 ATTACHMENT 1

Cimarron Environmental Response Trust Response to October 2, 2023, RAIs Table GWRM-1 Uranium Concentrations in BA1 Soils Prepared by:Stephen Wood Date:11/14/2023 Reviewed by:Jim Feild Date:11/14/2023 Sample Station Northing (feet)

Easting (feet)

Depth (feet)

Sample Length (feet)

Total U (pCi/g)

Soil Concentrations Less than

Background

<7 pCi/g Soil Concentrations Between 7-9 pCi/g Soil Concentrations Above

Background

>9 pCi/g Very Low Permeability (Bedrock)

Low Permeability (Clay)

Medium Permeability (Silt)

High Permeability (Sand)

Notes 846 1228 0

1 3.1 X

X 846 1228 1

1 1.9 X

X 846 1228 2

1 3.0 X

X 846 1228 6

1 3.7 X

X 846 1228 7

1 3.5 X

X 846 1228 8

1 2.9 X

X 846 1228 9

1 4.7 X

X 846 1228 10 1

6.3 X

X 10.0 to 10.7 clay. 10.7 to 11.0 sand.

846 1228 11 1

16.4 X

X Low permeability layer located directly on top of mudstone at the base of higher permeability material 846 1228 12 1

3.7 X

X 846 1228 13 1

2.5 X

X 846 1228 14 1

3.1 X

X 846 1228 15 1

2.0 X

X 846 1228 16 1

2.8 X

X 846 1228 17 1

2.4 X

X 846 1228 18 1

0.8 X

X 846 1228 22 1

1.8 X

X 846 1228 23 1

1.3 X

X 846 1228 24 1

1.5 X

X 846 1228 25 1

0.9 X

X 846 1228 26 1

1.5 X

X 846 1228 27 1

1.4 X

X 846 1228 30 1

2.2 X

X 846 1228 31 1

2.0 X

X 863 1280 0

5 3.2 X

X 863 1280 5

5 2.1 X

X 863 1280 10 5

2.2 X

X 863 1280 15 5

2.8 X

X Mostly sand, small clay seam 863 1280 20 4

2.6 X

X 02W27 899 1208 13 3

1.8 X

X 900 1251 9.5 5

4.3 X

X Sand and silt 900 1251 18 5

2.1 X

X Clay to Silty Sand 877 1256 9.5 5

4.6 X

X 877 1256 14.5 5.3 8.1 X

X 02W30 880 1230 17.5 5

2.1 X

909 1240 5.5 5

6.2 X

909 1240 15 5

4.1 X

941 1219 9.5 5

2.7 X

941 1219 14.5 5.5 1.3 X

02W33 927 1164 6

5 1.7 X

02W34 984 1145 9

5 1.6 X

02W35 1001 1166 9

5 1.1 X

02W36 984 1165 20 5

1.4 X

02W37 1000 1188 20 5

1.8 X

02W38 982 1208 21 5

1.4 X

871 1263 10 5

3.5 X

871 1263 17 5

5.6 X

02W26 02W28 02W29 02W31 02W32 02W39 02W25 Source: Burial Area #1 Groundwater Assessment Report January 2003 Page 4 of 8 Sandy Silt (30-40% very fine grained sand) above and Silty Sand (30 to 40% silt) below - Unlikely to qualify as high permeability ATTACHMENT 1

Cimarron Environmental Response Trust Response to October 2, 2023, RAIs Table GWRM-1 Uranium Concentrations in BA1 Soils Prepared by:Stephen Wood Date:11/14/2023 Reviewed by:Jim Feild Date:11/14/2023 Sample Station Northing (feet)

Easting (feet)

Depth (feet)

Sample Length (feet)

Total U (pCi/g)

Soil Concentrations Less than

Background

<7 pCi/g Soil Concentrations Between 7-9 pCi/g Soil Concentrations Above

Background

>9 pCi/g Very Low Permeability (Bedrock)

Low Permeability (Clay)

Medium Permeability (Silt)

High Permeability (Sand)

Notes 848 1249 17 5

2.2 X

848 1249 25 5

1.8 X

02W41 854 1263 23 5

0.6 X

02W42 868 1230 23 5

2.5 X

02W43 1016 1188 20 7.5 1.7 X

999 1203 10 5

1.2 X

999 1203 22 4.5 1.6 X

1014 1178 10 5

2.0 X

1014 1178 23 5

3.8 X

923 1232 10 5

2.8 X

923 1232 15 4

3.5 X

837 1246 10 5

2.0 X

837 1246 25 5

1.2 X

1075 1219 5

5 1.5 X

1075 1219 10 5

1.6 X

1075 1219 15 5

2.6 X

1075 1219 20 5

2.4 X

1075 1219 25 5

2.2 X

1075 1219 29 5

1.8 X

1075 1219 34 5

1.5 X

1075 1219 39 5

1.2 X

1075 1219 44 5

2.1 X

942 1197 6

12 1.8 X

942 1197 18 1

1.9 X

820 1246 17 3

1.2 X

820 1246 20 5

1.4 X

820 1246 25 3

1.2 X

820 1246 28 5

2 X

826 1230 4.5 4.5 1.7 X

826 1230 30 4

1.3 X

820 1257 10 14 1.0 X

820 1257 28 5.5 2.4 X

898 1203 10 5

1.0 X

898 1203 15 5

1.5 X

922 1195 0

1 3.0 X

X 922 1195 1

1 1.4 X

X 922 1195 2

1 2.1 X

X 922 1195 3

1 2.6 X

X 922 1195 4

1 3.3 X

X 922 1195 5

1 5.1 X

X 922 1195 6

1 3.6 X

X 922 1195 7

1 14.9 X

X 922 1195 8

1 6.9 X

X 922 1195 9

1 8.4 X

X 922 1195 10 1

2.1 X

X 922 1195 11 1

8.4 X

X 922 1195 12 1

5.9 X

X 922 1195 13 1

1.0 X

X 02W54 02W45 02W46 02W47 02W49 02W50 02W48 02W51 02W52 02W53 02W40 02W44 Source: Burial Area #1 Groundwater Assessment Report January 2003 Page 5 of 8 ATTACHMENT 1

Cimarron Environmental Response Trust Response to October 2, 2023, RAIs Table GWRM-1 Uranium Concentrations in BA1 Soils Prepared by:Stephen Wood Date:11/14/2023 Reviewed by:Jim Feild Date:11/14/2023 Sample Station Northing (feet)

Easting (feet)

Depth (feet)

Sample Length (feet)

Total U (pCi/g)

Soil Concentrations Less than

Background

<7 pCi/g Soil Concentrations Between 7-9 pCi/g Soil Concentrations Above

Background

>9 pCi/g Very Low Permeability (Bedrock)

Low Permeability (Clay)

Medium Permeability (Silt)

High Permeability (Sand)

Notes 911 1210 0

1 2.5 X

X 911 1210 1

1 2.3 X

X 911 1210 2

1 3.2 X

X 911 1210 3

1 2.8 X

X 911 1210 4

1 3.3 X

X 911 1210 5

1 4.9 X

X 911 1210 6

1 8.2 X

X 911 1210 7

1 9.5 X

X 911 1210 8

1 8.7 X

X 911 1210 9

1 8.7 X

X 911 1210 10 1

21.3 X

X 911 1210 11 1

16.2 X

X Clay and sand layers 911 1210 12 1

18.5 X

X Clay and sand layers 911 1210 13 1

12.8 X

X 911 1210 14 1

20.9 X

X 911 1210 15 1

7.0 X

X 911 1210 16 1

4.0 X

X 911 1210 17 1

3.4 X

X 911 1210 18 1

3.3 X

X 911 1210 19 1

1.4 X

X 911 1210 20 1

1.6 X

X 911 1210 21 1

2.2 X

X 02W56 939 1122 0

8 2.1 X

X 915 1255 0

1 7

X X

915 1255 1

1 3

X X

915 1255 2

1 2

X X

915 1255 3

1 7

X X

915 1255 4

1 No Sample X

915 1255 5

1 6

X X

915 1255 6

1 2

X X

915 1255 7

1 9

X X

915 1255 8

1 3

X X

915 1255 9

1 No Sample X

915 1255 10 1

3 X

X 915 1255 11 1

5 X

X 915 1255 12 1

3 X

X 915 1255 13 1

5 X

X 915 1255 14 1

3 X

X 915 1255 15 1

3 X

X 915 1255 16 1

4 X

X 915 1255 17 1

4 X

X 915 1255 18 1

10 X

X 915 1255 19 1

6 X

X 915 1255 20 1

5 X

X 915 1255 21 1

3 X

X 915 1255 22 1

4 X

X 915 1255 23 1

3 X

X 915 1255 24 1

2 X

X 02W55 TMW-5 Source: Burial Area #1 Groundwater Assessment Report January 2003 Page 6 of 8 ATTACHMENT 1

Cimarron Environmental Response Trust Response to October 2, 2023, RAIs Table GWRM-1 Uranium Concentrations in BA1 Soils Prepared by:Stephen Wood Date:11/14/2023 Reviewed by:Jim Feild Date:11/14/2023 Sample Station Northing (feet)

Easting (feet)

Depth (feet)

Sample Length (feet)

Total U (pCi/g)

Soil Concentrations Less than

Background

<7 pCi/g Soil Concentrations Between 7-9 pCi/g Soil Concentrations Above

Background

>9 pCi/g Very Low Permeability (Bedrock)

Low Permeability (Clay)

Medium Permeability (Silt)

High Permeability (Sand)

Notes 890 1280 0

1 3

X X

890 1280 1

1 5

X X

890 1280 2

1 3

X X

890 1280 3

1 7

X X

890 1280 4

1 5

X X

890 1280 5

1 4

X X

890 1280 6

1 5

X X

890 1280 7

1 6

X X

890 1280 8

1 3

X X

890 1280 9

1 5

X X

890 1280 10 1

5 X

X 890 1280 11 1

2 X

X 890 1280 12 1

4 X

X 890 1280 13 1

3 X

X 890 1280 14 1

3 X

X 890 1280 15 1

5 X

X 890 1280 16 1

11 X

X Located far northeast of eastern trench.

Average throughout this boring is 4.5 Ci/g (background).

890 1280 17 1

4 X

X 890 1280 18 1

4 X

X 890 1280 19 1

4 X

X 890 1280 20 1

6 X

X 890 1280 21 1

2 X

X 890 1280 22 1

4 X

X 890 1280 23 1

5 X

X 890 1280 24 1

3 X

X 890 1280 25 1

7 X

X 890 1280 26 1

3 X

X 890 1280 27 1

5 X

X 890 1280 28 1

3 X

X 890 1280 29 1

3 X

X 920 1241 0

1 4

X X

920 1241 1

1 5

X X

920 1241 2

1 6

X X

920 1241 3

1 6

X X

920 1241 4

1 No Sample X

920 1241 5

1 8

X X

920 1241 6

1 5

X X

920 1241 7

1 9

X X

920 1241 8

1 6

X X

920 1241 9

1 No Sample X

920 1241 10 1

5 X

X 920 1241 11 1

6 X

X 920 1241 12 1

7 X

X 920 1241 13 1

7 X

X 920 1241 14 1

9 X

X Low permeability layer located directly on top of mudstone at the base of higher permeability material TMW-7 (also SB-14)

TMW-6 Source: Burial Area #1 Groundwater Assessment Report January 2003 Page 7 of 8 Sandy Silt with trace of Clay, red-brown with Roots (7-8')

Unlikely to qualify as High Permeability Sand.

X Sandy Silt, red brown very fine grained ATTACHMENT 1

Cimarron Environmental Response Trust Response to October 2, 2023, RAIs Table GWRM-1 Uranium Concentrations in BA1 Soils Prepared by:Stephen Wood Date:11/14/2023 Reviewed by:Jim Feild Date:11/14/2023 Sample Station Northing (feet)

Easting (feet)

Depth (feet)

Sample Length (feet)

Total U (pCi/g)

Soil Concentrations Less than

Background

<7 pCi/g Soil Concentrations Between 7-9 pCi/g Soil Concentrations Above

Background

>9 pCi/g Very Low Permeability (Bedrock)

Low Permeability (Clay)

Medium Permeability (Silt)

High Permeability (Sand)

Notes 900 1235 0

1 7

X X

900 1235 1

1 4

X X

900 1235 2

1 7

X X

900 1235 3

1 No Sample X

900 1235 4

1 No Sample X

900 1235 5

1 11 X

X 900 1235 6

1 15 X

X 900 1235 7

1 32 X

X 900 1235 8

1 17 X

X 900 1235 9

1 16 X

X 900 1235 10 1

15 X

X 900 1235 11 1

16 X

X 900 1235 12 1

18 X

X 900 1235 13 1

16 X

X 900 1235 14 1

15 X

X 900 1235 15 1

11 X

X 900 1235 16 1

12 X

X 900 1235 17 1

12 X

X 900 1235 18 1

11 X

X 900 1235 19 1

19 X

X 900 1235 20 1

17 X

X Low permeability layer located directly on top of mudstone at the base of higher permeability material 900 1235 21 1

10 X

X Low permeability layer located directly on top of mudstone at the base of higher permeability material 900 1235 22 1

3 X

X 900 1235 23 1

4 X

X Notes:

TMW-9 Light fill indicates uranium soil concentrations between 7-9 pCi/g Dark fill indicates uranium soil concentrations above 9 pCi/g Source: Burial Area #1 Groundwater Assessment Report January 2003 Page 8 of 8

@7' to 9' per Soil Boring Log -

Silty Clay (CL) Yellow Red, Stiff, Crumbly, Non-plastic X

X

@ 10' Clayey Sand, Yellow Red, firm, slightly plastic (Not silt)

@ 13' to 15' Sandy Clay (CL),

Red, Plastic (Not silt or high permeability sand)

@ 19' Log has ML USCS Classification X

X X

ATTACHMENT 1

2.9 2.8 7.4 9.6 12.8 12.8 8.6 8.0 7.7 5.8 5.1 3.2 3.1 4.1 3.1 2.6 2.4 Ground Elevation 938.8' Water Table 931.5' EL in DP Rev 3 Map Elevated Vadose Zone, Soil Uranium Conc in Organic Clays (OH) & Silts (ML)

Total Uranium pCi/g GW Concentration of 2,128 ug/L in DP Rev 3 Plume Map ATTACHMENT 1

SOIL BORING LOG w-ws&A KERR-McGEE CORPORATION IL'C'T A

BORING Hydrology Dept. Engineering Services oft~ OK iAtu~s L-NUMBER 0.~

Z9 tA DEPTHJ UTHLOGC DSCRPTIN Srr SOIL SAMPLE REAISO SOIL (PE ID)RMRSO IN. IIELDGI DECITO (PER pm)

O.

DE~

E~ELD OBSERVATIONS 10 (CLASS.

I_

114-e'-I 0. +, 314--r a,pooe51Q 0a4-lOr.O

'SAmv,cl e) 7.4-9.

mo\\s 47i.

V-V,0 (I

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-5,,,

)4.O~)4&51L.1, Sc)y(so i4.t-i-l? 'S io-4o P-%4-9"y~

3~~Z~oI IL7fl, TAY 4 (z~sy 4/I ZO4- )+- orb,

~

rUw-yall

---a fl-i i

[.

i.r.u

/ii 15 M SrA/

S C-

t1T sr 44 Z- 0

-rv 7 I-.

Water Table (24 Hour)

GRAPHIC LOG LEGEND DtOA DILLED-AG

.2. Water Table (Time of Boring)

ElDEBR I

DR 3IIN I

of )

PID Phooloonization Detection g

IQ FIL JAPt4

)rO NO.

Identifies Sample by Number9III

\\..

Z TYPE Sample Collection Method EIhSILT 3hyGA1C1AI) DILLDB 0

SA DY ILDS I-C

mEc,

$'AND CLAY

&8X~

M.PI-AUGER ROCKGG B

A.

RE

[M.

GRAVEL SAND srt.i WALDSAMPLER RECOVR CISLTY DEPTH. ADceptah Top and Bottom of Sample MILT 61E

[]-7_

OATO RGI C;OONAE REC.

Acua Length of Recovered Sample in Feet 7J

'R7 I -

ATTACHMENT 1

SOIL BORING LOG Km--55-A

1 KERR-McGEE CORPORATION KMSIJBSIDIARY ILNUMBrEN C..

BORING Hydrology Dept. Engineering Services ICt..ikO,,t COe,,

,"urt--

/

I NUMBER 14O-1 1

A I

DEPTH UNIFIED BLOWS SOIL SAMPLE IN LITHOLOGIC DESCRIPTION SOIL PER PID REMARKS OR FEET I FIELD FOOT (ppm)

NO.

DEPTH REC.

FIELD OBSERVATIONS 1

cE ICIS beo S5

4 V43~

sit -,,c. LTM4 ri.,

-JT -~ VS 16154 VL.%t~

R1 d vg%

+-A 1.1.11 N." '1.1

-I.

5 3.3

-ro&r.1

I.LL

.4'Lr1.

C-IL 15 5

I-I.

4.-h 1

4-I

-r> s Se-MV w i&1 Y

Water Table (24 Hour)

GRAPHIC LOG LEGEND DATE DRILLED PAGE tD-BRIS of Water Table (Time of Boring) aCLAY L DEBRIS LLN M

PID Photoionization Detection fppm)

CA FILL DRILLING METHOD NO.

Identifies Sample by Number

! SILT I4SA Z TYPE Sample Collection Method

=RILLE D

Y 0DRILLED BY IVI M~u SAONDYAN

9 LGDB L3AUGER GSAND CELAY BARREL CORE RVL

CLAYEY LOGGED BY THN-ENCNIUU O*SLY

[

XISTING GRADE rELEVATION (FT. AMS-L)

TUBE U

SAMPLER RECOVERY CSI LATY Fl AON CLAYEY OCATION Of GRID COORDINATES DEPTH. Depth Top and Bottom of Sample M SILT L

O O

A REC.

Actual Length of Recovered Sample in Feet z

I5-ATTACHMENT 1

SOIL BORING LOG KM-565S-8 KERR-McGEE CORPORATION Hydrology Dept. - S&EA Division IKM SUBSIDIARY C..i.Mo...rrot'\\.

I',., rt\\.

DEPTH

!=1 UNIRED BU:7,Y.,

IN llTHOLOGIC DESCRIPTION f g SOIL PER PIO

SOIL SAMPLE BORING NUMBER qco A)* 1:;i3c; I=

REMARKS OR FIELD OBSERVATIONS FEET RElD 6'

(ppm)

NO.

Of PTH RfC.

1'.)

CLASS.

I !) !> *-=-tb:--,--, t-;

4..-\\-.:--.;)-:.,,.-;-.,,-. f----,-\\1-:-+-:-,'l-"-:<l-t:-F! j'i.:ll :-"5=\\"(\\=+---j=l----+-..+-caJ----+---l----------l=

.3L

\\\\b D I

5l.

PIO NO.

Water Table (24 Hour)

...,.. 1' 3

rx

\\O 15

'-jj f----"Ge;Re:A,,_P_,_H,,;IC

,._,,L,,O:,G:..e,LEG=E,,N::,_D

"---l OATE DRILLED i '\\ '1

CLAY DEBRIS FILL DR1LUNG METHOD Water Tobfe (Time of Boring)

Photoionizotion Detection {ppm}

ldentifie!. Somple by Number Sample Collection Method

TYPE SPLIT-

[I AUGER

[I] ROCK ill] Sil T

@SAND

§ HIGl!lY OtGAHIC(PE.H) 8S SANDY DRILLED ev

\\..\\.t:i\\'l °2.Di\\

BARREL CORE ITHIN-I] CONTINUOUS NO WALLED TUBE SAMPtER RECOVERY DEPTH Depth Top and Bottom of Sample REC.

Actoal Length of Recovered Sample in Feet ClAV D GRAVEL CT] CLAYEY SANO

( SILTY

51:,o,\\e, ClAY EXISTING GRADE ELEVATION !FT AMSU fE] CLAVEY SllT

LOCATION OR GRID COORDINATES

'\\oo,v - \\35c Ground 944.3' EL Water Table 934.2' EL in DP Rev 3 Map HIghest Uranium Conc in Silty Clay (CL)

Elevated Uranium Conc Vadose Zone Soils CL Groundwater Concentration of 2,975 ug/L in DP Rev 3 Plume Map TOC EL = 946.4' ATTACHMENT 1 7

4 7

No Sample No Sample 16 32 15 17 11 15 16 18 16 15 Total Uranium pCi/g 11 12 19 11 12 17 10 3

4

TR-07 GWI-BA1-01A TR-06 1+00 2+00 0+00 930 925 920 940 935 945 950 955 960 965 SANDSTONE B 930 925 920 940 935 945 950 955 960 965 APPROX. FORMER BA1 DISPOSAL TRENCH (TYP.)

MUDSTONE 12 OZ. NON-WOVEN GEOTEXTILE SANDSTONE A VERTICAL SCALE checked checked of sheet sheets contract rev.

8 11 SECTION 4_PLANS AND X-SECTIONS.DWG 2018 OKLAHOMA FIRM LICENSEE NO. 421 816-333-9400 KANSAS CITY, MO 64114 9400 WARD PARKWAY BURNS & McDONNELL ENGINEERING COMPANY, INC.

0 2.5' SCALE IN FEET 5'

project designed date detailed LEGEND NATIVE BACKFILL GRAVEL BACKFILL (TYP.)

STATIC PIEZOMETRIC SURFACE (12/7/2017)

APPROXIMATE BOTTOM OF TRENCH (SEE NOTE 2)

TARGETED PIEZOMETRIC SURFACE DURING INJECTION TEST ELEVATION (FEET)

STATION (FEET)

EXISTING GROUND SURFACE HORIZONTAL SCALE 0

25' SCALE IN FEET 50' REFER TO CONFORMING TO CONSTRUCTION RECORD DRAWINGS FOR TYPICAL MONITOR WELL CONSTRUCTION DETAILS NOTES:

1. LITHOLOGICAL TRANSITION ZONES ARE DEPICTED BASED ON OBSERVATIONS MADE DURING EXCAVATION ACTIVITIES OR OBSERVATIONS FROM PREVIOUS INVESTIGATION ACTIVITIES.

2. BOTTOM OF TRENCH ELEVATIONS BASED ON FIELD MEASUREMENTS COLLECTED DURING EXCAVATION ACTIVITIES.

INFERRED LITHOLOGICAL BOUNDARY (SEE NOTE 1) 02W51 962.18' TOC 959.74' Ground Top of Screen 950.54' EL Bottom of Screen 926.04' EL NW SE 02W50 961.20' TOC 958.60' Ground Bottom of Screen 925.90' EL Top of Screen 945.40' EL Bottom of Screen 924.85' EL Top of Screen 944.65' EL 02W52 960.86' TOC 958.35' Ground Selected well construction details of monitoring wells 02W50, 02W51, and 02W52 have been projected on the GWI-BA1-01 Injection Trench Topographic and Geologic Cross Section for comparison.

The surveyed ground surface and top of casing elevations for the wells have also been provided on the figure.

The screened intervals for each of the three monitoring wells each extend to essentially the same depth elevation ranging from 926.04' to 924.85' elevation. The three wells are each screened across the majority of the injection trench interval with screen lengths similar to the GWI-BA1-01A injection well screen in the center of the trench.

All three of the monitoring wells were gauged prior to, during, and after the injection pilot test in December 2017. The static water level elevations in the wells and the groundwater level rise in response to the injected water are shown on the cross section.

In the December 8, 2023 RAI Response, the Licensee indicated that monitoring well 02W51 exhibited "anaomalous" groundwater elevations due to the fact that the well monitors a "perched" water-bearing zone.

Given the similar screened interval for the 02W51 well in comparison to the adjacent Sandstone B wells, the positive hydraulic response to the injection trench test in 2017 and the inclusion of the well in the Hydraulic Mound contour map in the 2018 Pilot Test Report, NRC staff favors the characterization of the 02W51 well as a water table rather than a "perched" zone monitoring well.

940.45' Static WL EL 949.94' Static WL EL 953.20' Static WL EL

+10.09'

+2.82'

+1.85' Potential for groundwater seeps on the slope immediately east of TR-07/GWI-BA1-01 injection trench is illustrated in this 2018 Pilot Test Report figure by the slope of the Targeted Piezometric Surface during the Injection Test (~954' Maximum Elevation within the trench). The piezometric surface intersects the hill slope at an elevation of ~949' in the 2018 Pilot Test Report figure.

Topographic breaks in the slope observed at elevations

~953'-952' and ~945'-944' east of the trench on the contoured site maps appear to correlate with the resistant, well cemented, upper contacts of Sandstone A and Sandstone B, respectively (based on the 02W52 Geologic Log).

The presence of hard, resistant rock layers in the vadose zone may interrupt the vertical infiltration of the injected groundwater mound resulting in lateral flow and potential seeps on the hill slope. The potential for discharge of injected water into the ephemeral stream channel is also a possibility due to the proximity of the mound to the channel.

Regular, scheduled visual observation and monitoring of the hill slope for daylighting groundwater during remedial system operation would provide a measure of safety, as well as a means to evaluate system efficiency. Observation frequency could be reduced following sufficient confirmation of adequate subsurface system performance.

ATTACHMENT 2

ET ET ET ET ET ET ET ET ET ET IT IT IT IT IT IT IT IT IT IT TR-08 GETR-BA1-01A TR-07 1408 GWI-BA1-01A TR-06 1407 1405 1409 TMW-02 02W51 02W52 02W47 02W25 02W40 TMW-20 TMW-01 TMW-21 02W41 TMW-25 02W20 02W39 02W02 TMW-09 TMW-07 02W09 1315R 02W30 TMW-17 TMW-08 TMW-06 ET ET ET ET ET ET ET 02W29 (ABANDONED) 02W50 02W26 1316R 02W27 02W53 02W01 TMW-05 02W10 1406 02W31 (ABANDONED)

TMW-18 02W03 02W04 02W15 TR-09 TR-10 02W28 02W42 IT IT IT IT IT IT IT IT 1406 NORTH Inches checked checked of sheet sheets contract rev.

11 PILOT TEST GW POT MAP FIGURES.DWG 2018 OKLAHOMA FIRM LICENSEE NO. 421 816-333-9400 KANSAS CITY, MO 64114 9400 WARD PARKWAY BURNS & McDONNELL ENGINEERING COMPANY, INC.

0 SCALE IN FEET 20' 40' project designed date detailed 940.42 940.46 940.24 940.45 940.24 939.86 938.79 Dry Dry 949.94 953.20 940.63 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM FORMER BURIAL TRENCHES NM APPROXIMATE TRANSITION ZONE FORMATION BOUNDARY (AT GROUNDWATER SURFACE ELEVATION)

EL. 944.37' EL. 942.05' EL. 927.15' 02W407 1409 NOT TO SCALE EL. 947.18' EL. 947.38' EL. 942.38' EL. 942.18' 1407 1408 EL. 924.87' LEGEND GROUNDWATER SURFACE ELEVATION (1/24/2018) 965.31 NM NOT MEASURED FORMER TRENCH LOCATIONS PILOT TEST INJECTION TRENCH IT FUTURE INJECTION TRENCH IT ET PILOT TEST GROUNDWATER EXTRACTION TRENCH ET FUTURE GROUNDWATER EXTRACTION TRENCH ATTACHMENT 2 Topographic Slope to East of Injection Trench

(~18'-20' elevation drop from trench to ephemeral stream channel below)

Approximate Ephemeral Stream Channel Location

I

.

13:10 I 3:ao I'

I 958.35' Ground Elev.

~953' EL

~945' EL

~939' EL Hard, Dense, Cemented Layers Hard Drilling - Bit Chatter @12.5' - 13'

~944 - 945' Sandstone A Sandstone B ATTACHMENT 2

ET ET ET ET ET ET ET ET ET ET IT IT IT IT IT IT IT IT IT IT TR-08 GETR-BA1-01A TR-07 1408 GWI-BA1-01A TR-06 1407 1405 1409 TMW-02 02W51 02W52 02W47 02W25 02W40 TMW-20 TMW-01 TMW-21 02W41 TMW-25 02W20 02W39 02W02 TMW-09 TMW-07 02W09 1315R 02W30 TMW-17 TMW-08 TMW-06 ET ET ET ET ET ET ET 02W29 (ABANDONED) 02W50 02W26 1316R 02W27 02W53 02W01 TMW-05 02W10 1406 02W31 (ABANDONED)

TMW-18 02W03 02W04 02W15 TR-09 TR-10 02W28 02W42 IT IT IT IT IT IT IT IT NORTH Inches checked checked of sheet sheets contract rev.

11 INJECTION TRENCH MOUNDING FIGURES.DWG 2018 OKLAHOMA FIRM LICENSEE NO. 421 816-333-9400 KANSAS CITY, MO 64114 9400 WARD PARKWAY BURNS & McDONNELL ENGINEERING COMPANY, INC.

0 SCALE IN FEET 20' 40' project designed date detailed APPROXIMATE TRANSITION ZONE FORMATION BOUNDARY (AT GROUNDWATER SURFACE ELEVATION) 14.51 10.31 7.80 1.85 13.61 14.0 13.0 12.0 11.0 FORMER BURIAL TRENCHES 11.39 13.16 14.43 10.09 2.82 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM 3.52 8.55 13.0 12.0 11.0 10.0 10.0 9.0 8.0 7.0 9.0 NM NM NM NM NM NM NM NM NM 14.0 6.0 5.0 4.0 3.0 2.0 1.0 LEGEND GROUNDWATER LEVEL FEET CHANGE FROM STATIC CONTOUR (12/19/2018) 5.0 NM NOT MEASURED INFERRED GROUNDWATER LEVEL CHANGE CONTOUR GROUNDWATER FLOW DIRECTION TRACER DYE OBSERVED EL. 944.37' EL. 942.05' EL. 927.15' 02W407 1409 NOT TO SCALE EL. 947.18' EL. 947.38' EL. 942.38' EL. 942.18' 1407 1408 EL. 924.87' GETR-BA1-02A GWI-BA1-02A PILOT TEST INJECTION TRENCH IT FUTURE INJECTION TRENCH IT ET PILOT TEST GROUNDWATER EXTRACTION TRENCH ET FUTURE GROUNDWATER EXTRACTION TRENCH NM ATTACHMENT 2

ET ET ET ET ET ET ET ET ET ET IT IT IT IT IT IT IT IT IT IT TR-08 GETR-BA1-01A TR-07 1408 GWI-BA1-01A TR-06 1407 1405 1409 TMW-02 02W51 02W52 02W47 02W25 02W40 TMW-20 TMW-01 TMW-21 02W41 TMW-25 02W20 02W39 02W02 TMW-09 TMW-07 02W09 1315R 02W30 TMW-17 TMW-08 TMW-06 ET ET ET ET ET ET ET 02W29 (ABANDONED) 02W50 02W26 1316R 02W27 02W53 02W01 TMW-05 02W10 1406 02W31 (ABANDONED)

TMW-18 02W03 02W04 02W15 TR-09 TR-10 02W28 02W42 IT IT IT IT IT IT IT IT NORTH Inches checked checked of sheet sheets contract rev.

11 INJECTION TRENCH MOUNDING FIGURES.DWG 2018 OKLAHOMA FIRM LICENSEE NO. 421 816-333-9400 KANSAS CITY, MO 64114 9400 WARD PARKWAY BURNS & McDONNELL ENGINEERING COMPANY, INC.

0 SCALE IN FEET 20' 40' project designed date detailed APPROXIMATE TRANSITION ZONE FORMATION BOUNDARY (AT GROUNDWATER SURFACE ELEVATION) 14.51 10.31 7.80 1.85 13.61 14.0 13.0 12.0 11.0 FORMER BURIAL TRENCHES 11.39 13.16 14.43 10.09 2.82 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM 3.52 8.55 13.0 12.0 11.0 10.0 10.0 9.0 8.0 7.0 9.0 NM NM NM NM NM NM NM NM NM 14.0 6.0 5.0 4.0 3.0 2.0 1.0 LEGEND GROUNDWATER LEVEL FEET CHANGE FROM STATIC CONTOUR (12/19/2018) 5.0 NM NOT MEASURED INFERRED GROUNDWATER LEVEL CHANGE CONTOUR GROUNDWATER FLOW DIRECTION TRACER DYE OBSERVED EL. 944.37' EL. 942.05' EL. 927.15' 02W407 1409 NOT TO SCALE EL. 947.18' EL. 947.38' EL. 942.38' EL. 942.18' 1407 1408 EL. 924.87' GETR-BA1-02A GWI-BA1-02A PILOT TEST INJECTION TRENCH IT FUTURE INJECTION TRENCH IT ET PILOT TEST GROUNDWATER EXTRACTION TRENCH ET FUTURE GROUNDWATER EXTRACTION TRENCH NM Approx Ephemeral Stream Location

(~937'-938' Elev.)

Estimated Upper Contact - Sandstone B

(~944'-945' Elev.)

Estimated Upper Contact - Sandstone A Approx. Location of Buried Escarpment Transition Zone 7.0 6.0 5.0 4.0 3.0 2.0 1.0

(~952'-953' Elev.)

No Transition Zone Materials Noted to East of Injection Trench Extrapolated Hydraulic Mound Contours -

Dec 2017 Injection Trench Pilot Test ATTACHMENT 3

ML24046A198

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