ML19329B944

Environmental Properties Management, LLC - Tabulated Data for Sampling Events Conducted August 2019

ML19329B944
Person / Time
Site:	07000925
Issue date:	11/22/2019
From:	Lux J Environmental Properties Management
To:	Davis P, Robert Evans, Kenneth Kalman Document Control Desk, Office of Nuclear Material Safety and Safeguards, State of OK, Dept of Environmental Quality (DEQ)
References
Download: ML19329B944 (23)

Text

9400 Ward Parkway

• Kansas City, MO 64114 Tel: 405-642-5152

• jlux@envpm.com November 22, 2019 Mr. Ken Kalman U.S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, MD 20852-2738 Mr. Paul Davis Oklahoma Department of Environmental Quality 707 North Robinson Oklahoma City, OK 73101 Mr. Robert Evans U.S. Nuclear Regulatory Commission 1600 East Lamar Blvd; Suite 400 Arlington, TX 76011-4511 Re: Docket No.70-925; License No. SNM-928 Tabulated Data for Sampling Events Conducted August 2019

Dear Sirs:

Solely as Trustee for the Cimarron Environmental Response Trust (CERT), Environmental Properties Management LLC (EPM) submits herein three files which present the data obtained during groundwater and surface water sampling conducted in August 2019. I apologize for the delay in reporting this data, but theres a legitimate reason. Data review identified some problems; when we contacted the laboratory, they went back through their records and determined that there had been a sample prep issue. Because they had retained the samples, there were able to re-prep and reanalyze them.

Annual Environmental Monitoring 2019 Annual Environmental Data.xlsx reports the results of the annual environmental monitoring required by Section 15 of the Radiation Protection Plan. Section 15 requires analysis for uranium isotopes. Several years ago, we began analyzing the groundwater and surface water samples from the environmental monitoring locations for both isotopic mass and isotopic activity, and both mass concentration and activity concentration results are reported herein.

Assessment of Technitium-99 (Tc-99) in Groundwater 2019 Tc-99 Assessment Data.xlsx reports the results of the Tc-99 groundwater assessment sampling event. For the western remediation areas, this data will be used to calculate the estimated initial and maximum concentration of Tc-99 in influent to the water treatment facility.

This data represents the first set of defensible site-wide Tc-99 data and will be the basis for this and subsequent evaluations.

Mr. Ken Kalman U.S. Nuclear Regulatory Commission November 22, 2019 Page 2 It was believed that the liquid waste stream that was disposed of in Uranium Pond #1 and Uranium Pond #2 was the source of the Tc-99 in groundwater. Consequently, it should not be present in Burial Area #1 (BA1). However, when old data was uploaded to the comprehensive database, the electronic records of historic Tc-99 data presented data quality issues. For example, the detection limit was sometimes reported as 0.0 pCi/L; at other times the detection limit was the same value as the analytical result; still other times it was reported to be 300 pCi/L.

The August 2019 sampling event provides conclusive evidence that Tc-99 is not present in groundwater in BA1.

This Tc-99 assessment data will also form the basis for a report on the extent and distribution of Tc-99 in groundwater at the Cimarron site. EPM anticipates submitting this report by the end of January 2020.

Oxidation-Reduction of Groundwater in BA1 2019-Q3 Redox Data.xlsx reports the data obtained for the continuing assessment of oxidation-reduction conditions that were created as a result of the use of an organic slurry to construct groundwater Extraction Trench GETR-BA1-01 during the 2017 pilot test. Using low-flow sampling methods, measurements for dissolved oxygen (DO) and oxidation-reduction potential (ORP) were obtained prior to collecting samples for laboratory analysis. Measurements recorded and samples collected during low-flow purging are identified by the suffix LF.

Some of the locations from which low-flow samples were collected are included in the list of locations for the annual environmental monitoring program. At these locations, groundwater samples were collected using the standard purging technique stipulated in sampling and analysis procedure SAP-104, Groundwater Sampling after a sample was collected for analysis using the low-flow methodology. This was done to determine if the two purging methods would yield comparable results.

This data will be compiled with previously obtained data, and a report will be prepared that will describe the creation and monitoring of redox conditions in BA1. The report will include assessment of the re-oxidation of groundwater and the re-mobilization of uranium and may propose continued monitoring events or a monitoring program. EPM anticipates that the report will be submitted by the end of February 2020.

(The rest of this page was left blank intentionally.)

Mr. Ken Kalman U.S. Nuclear Regulatory Commission November 22, 2019 Page 3 Please feel free to contact me at jlux@envpm.com or at 405-642-5152 if you would like to discuss any of this information. Thanks.

Sincerely, Jeff Lux, P.E.

Trustee Project Manager Attachment cc: NRC Public Document Room (electronic copy only)

ATTACHMENT 1 2019 ANNUAL ENVIRONMENTAL MONITORING DATA

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 ANNUAL ENVIRONMENTAL DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL Fluoride 4.42 MG/L 0.033 Nitrogen, Nitrate/Nitrite 14.3 MG/L 0.850 ALPHA 185 15.7 PCI/L 4.81 BETA 91.6 5.16 PCI/L 3.42 Uranium-233/234 155 7.81 PCI/L 0.864 Uranium-235/236 8.65 2.08 PCI/L 0.773 Uranium-238 51.9 4.53 216 PCI/L 0.675 Uranium-235 3.14 0.158 UG/L 0.050 Uranium-238 141 7.06 144 UG/L 0.335 Fluoride 2.63 MG/L 0.033 Nitrogen, Nitrate/Nitrite 6.83 MG/L 0.170 ALPHA 176 14.50 PCI/L 4.56 BETA 52.1 4.15 PCI/L 3.45 Uranium-233/234 190 7.65 PCI/L 0.642 Uranium-235/236 13.4 2.27 PCI/L 0.475 Uranium-238 30.4 3.06 234 PCI/L 0.240 Uranium-235 4.14 0.210 UG/L 0.100 Uranium-238 87.9 4.39 92.0 UG/L 0.067 Fluoride 0.895 MG/L 0.033 Nitrogen, Nitrate/Nitrite 1.22 MG/L 0.085 ALPHA 131 13.0 PCI/L J

4.61 BETA 22.8 2.99 PCI/L J

3.19 Uranium-233/234 128 6.24 PCI/L 0.547 Uranium-235/236 9.74 1.92 PCI/L 0.292 Uranium-238 20.2 2.48 158 PCI/L 0.481 Uranium-235 2.77 0.140 UG/L 0.050 Uranium-238 52.7 2.63 55 UG/L 0.067 Fluoride 2.43 MG/L 0.033 Nitrogen, Nitrate/Nitrite 23.2 MG/L 0.850 ALPHA 149 13.50 PCI/L 3.94 BETA 76.6 4.90 PCI/L 3.27 Uranium-233/234 149 6.97 PCI/L 0.582 Uranium-235/236 8.83 1.91 PCI/L 0.640 Uranium-238 56.0 4.28 214 PCI/L 0.594 Uranium-235 3.04 0.153 UG/L 0.050 Uranium-238 155 7.77 158 UG/L 0.335 WAA U>DCGL 8/26/2019 8/26/2019 8/26/2019 8/26/2019 T-62 T-64 T-70R T-76 Page 1 of 8

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 ANNUAL ENVIRONMENTAL DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL Fluoride 0.603 MG/L 0.033 Nitrogen, Nitrate/Nitrite 1.54 MG/L 0.085 ALPHA 138 13.0 PCI/L 6.87 BETA 32.6 4.31 PCI/L 5.88 Uranium-233/234 103 5.21 PCI/L 0.513 Uranium-235/236 6.13 1.43 PCI/L 0.468 Uranium-238 18.3 2.20 127 PCI/L 0.480 Uranium-235 2.25 0.114 UG/L 0.050 Uranium-238 58.8 2.940 61.1 UG/L 0.067 Fluoride 0.571 MG/L 0.033 Nitrogen, Nitrate/Nitrite 0.195 MG/L 0.017 ALPHA 81.0 7.58 PCI/L 5.04 BETA 19.4 2.42 PCI/L 3.31 Uranium-233/234 82.9 4.80 PCI/L 0.627 Uranium-235/236 4.23 1.22 PCI/L 0.493 Uranium-238 14.7 2.03 102 PCI/L 0.505 Uranium-235 1.68 0.086 PCI/L 0.050 Uranium-238 42.2 2.11 43.9 UG/L 0.067 Fluoride 0.478 MG/L 0.033 Nitrogen, Nitrate/Nitrite 0.117 MG/L 0.017 ALPHA 28.9 6.89 PCI/L 8.10 BETA 6.66 2.89 PCI/L 4.66 Uranium-233/234 24.3 2.73 PCI/L 0.608 Uranium-235/236 1.61 0.816 PCI/L 0.541 Uranium-238 8.09 1.59 34.0 PCI/L 0.612 Uranium-235 0.373 0.019 UG/L 0.010 Uranium-238 20.3 1.02 20.7 UG/L 0.067 WAA U>DCGL 8/26/2019 8/26/2019 8/26/2019 T-77 T-79 T-82 Page 2 of 8

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 ANNUAL ENVIRONMENTAL DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL Fluoride 1.03 MG/L 0.033 Nitrogen, Nitrate/Nitrite 20.3 MG/L 0.850 ALPHA 880 31.2 PCI/L J

4.09 BETA 316 9.52 PCI/L 4.40 Uranium-233/234 1230 24.2 PCI/L 1.19 Uranium-235/236 79.7 6.65 PCI/L 1.00 Uranium-238 360 13.1 1670 PCI/L 1.03 Uranium-235 24.5 1.24 UG/L 0.500 Uranium-238 956 47.8 981 UG/L 3.35 Fluoride 1.01 MG/L 0.033 Nitrogen, Nitrate/Nitrite 20.7 MG/L 0.850 ALPHA 821 31.2 PCI/L J

4.28 BETA 338 8.96 PCI/L 3.05 Uranium-233/234 1230 24.0 PCI/L 1.15 Uranium-235/236 75.9 6.64 PCI/L 1.22 Uranium-238 374 13.2 1680 PCI/L 1.02 Uranium-235 25.7 1.30 UG/L 0.500 Uranium-238 993 49.7 1019 UG/L 3.35 Fluoride 0.394 MG/L 0.033 Nitrogen, Nitrate/Nitrite 29.6 MG/L 1.70 ALPHA 109 11.0 PCI/L J

4.62 BETA 72.9 4.79 PCI/L 3.13 Uranium-233/234 85.5 4.92 PCI/L 0.545 Uranium-235/236 5.87 1.45 PCI/L 0.504 Uranium-238 96.8 5.24 188 PCI/L 0.516 Uranium-235 1.17 0.061 UG/L 0.050 Uranium-238 168 8.39 169 UG/L 0.335 Fluoride 0.451 MG/L 0.033 Nitrogen, Nitrate/Nitrite 15.3 MG/L 0.850 ALPHA 347 18.6 PCI/L 4.93 BETA 137 6.15 PCI/L 3.40 Uranium-233/234 255 9.59 PCI/L 0.633 Uranium-235/236 17.7 2.83 PCI/L 0.707 Uranium-238 110 6.29 383 PCI/L 0.657 Uranium-235 4.93 0.249 UG/L 0.100 Uranium-238 288 14.4 293 UG/L 0.670 8/26/2019 8/26/2019 8/26/2019 8/26/2019 WU-BA3 1351 1351DUP 1352 1356 Page 3 of 8

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 ANNUAL ENVIRONMENTAL DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL Fluoride 10.2 MG/L 0.165 Nitrogen, Nitrate/Nitrite 5.80 MG/L 0.170 ALPHA 722 28.9 PCI/L 4.88 BETA 120 5.67 PCI/L 2.95 Uranium-233/234 563 8.89 PCI/L 0.627 Uranium-235/236 31.8 2.35 PCI/L 0.135 Uranium-238 98.2 3.72 693 PCI/L 0.490 Uranium-235 17.7 0.890 UG/L 0.250 Uranium-238 409 20.4 427 UG/L 1.68 Fluoride 3.82 MG/L 0.033 Nitrogen, Nitrate/Nitrite 8.09 MG/L 0.170 ALPHA 118 12.9 PCI/L 4.86 BETA 68.0 4.57 PCI/L 3.34 Uranium-233/234 119 4.57 PCI/L 0.495 Uranium-235/236 7.12 1.25 PCI/L 0.170 Uranium-238 48.0 2.92 174 PCI/L 0.506 Uranium-235 2.54 0.128 UG/L 0.050 Uranium-238 143 7.17 146 UG/L 0.335 Fluoride 0.206 MG/L 0.033 Nitrogen, Nitrate/Nitrite 1.2 MG/L 0.170 ALPHA 4.33 7.45 PCI/L U

13.0 BETA 9.36 6.21 PCI/L U

10.2 Uranium-233/234 1.64 0.713 PCI/L 0.615 Uranium-235/236 0.024 0.246 PCI/L U

0.514 Uranium-238 1.30 0.633 2.96 PCI/L 0.550 Uranium-235 0.023 0.00353 UG/L J

0.010 Uranium-238 2.97 0.150 2.99 UG/L 0.067 Fluoride 0.215 MG/L 0.033 Nitrogen, Nitrate/Nitrite 1.19 MG/L 0.085 ALPHA 1.96 9.97 PCI/L U

17.9 BETA 2.09 6.61 PCI/L U

11.3 Uranium-233/234 1.59 0.679 PCI/L 0.522 Uranium-235/236 0.371 0.399 PCI/L U

0.454 Uranium-238 1.68 0.679 3.64 PCI/L 0.405 Uranium-235 0.024 0.00355 UG/L J

0.010 Uranium-238 2.9 0.147 2.92 UG/L 0.067 8/27/2019 8/27/2019 8/27/2019 8/27/2019 1206-North MWWA-03 MWWA-09 Surface Water 1201 1202 Page 4 of 8

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 ANNUAL ENVIRONMENTAL DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL Fluoride 0.225 MG/L 0.033 Nitrogen, Nitrate/Nitrite 1.35 MG/L 0.085 ALPHA 4.37 3.27 PCI/L U

4.96 BETA 0.271 1.82 PCI/L U

3.20 Uranium-233/234 1.25 0.642 PCI/L 0.623 Uranium-235/236 0.150 0.295 PCI/L U

0.409 Uranium-238 0.519 0.410 1.92 PCI/L 0.382 Uranium-235 ND 0.00336 UG/L U

0.010 Uranium-238 1.03 0.0562 1.03 UG/L 0.067 Fluoride 0.425 MG/L 0.033 Nitrogen, Nitrate/Nitrite 2.1 MG/L 0.170 ALPHA 98.0 10.2 PCI/L J

4.66 BETA 49.1 3.74 PCI/L 3.08 Uranium-233/234 114 5.80 PCI/L 0.566 Uranium-235/236 8.41 1.77 PCI/L 0.526 Uranium-238 77.5 4.79 200 PCI/L 0.425 Uranium-235 2.23 0.113 UG/L 0.050 Uranium-238 183 9.16 185 UG/L 0.335 Fluoride 0.352 MG/L 0.033 Nitrogen, Nitrate/Nitrite 4.25 MG/L 0.170 ALPHA 1830 46.2 PCI/L 4.89 BETA 648 12.4 PCI/L 2.96 Uranium-233/234 1060 20.7 PCI/L 1.36 Uranium-235/236 63.2 5.62 PCI/L 0.389 Uranium-238 702 16.8 1825 PCI/L 1.01 Uranium-235 24.3 1.22 UG/L 0.400 Uranium-238 2060 103 2084 UG/L 2.68 Fluoride 0.571 MG/L 0.033 Nitrogen, Nitrate/Nitrite 0.109 MG/L 0.017 ALPHA 213 11.0 PCI/L 5.94 BETA 121 4.22 PCI/L 3.16 Uranium-233/234 190 7.78 PCI/L 0.535 Uranium-235/236 16.9 2.60 PCI/L 0.675 Uranium-238 116 6.08 323 PCI/L 0.459 Uranium-235 4.92 0.248 UG/L 0.100 Uranium-238 367 18.4 372 UG/L 0.670 BA1-B 8/27/2019 8/27/2019 8/28/2019 8/28/2019 BA1-A 1314 TMW-08 TMW-09 02W06 Page 5 of 8

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 ANNUAL ENVIRONMENTAL DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL Fluoride 0.763 MG/L 0.033 Nitrogen, Nitrate/Nitrite ND MG/L U

0.017 ALPHA 113 10.2 PCI/L 3.70 BETA 48.2 3.69 PCI/L 3.04 Uranium-233/234 73.8 5.52 PCI/L 0.711 Uranium-235/236 4.11 1.47 PCI/L 0.398 Uranium-238 48.7 4.49 127 PCI/L 0.655 Uranium-235 1.73 0.088 UG/L 0.050 Uranium-238 139 6.93 141 UG/L 0.335 Fluoride 0.469 MG/L 0.033 Nitrogen, Nitrate/Nitrite ND MG/L U

0.017 ALPHA 14.4 3.68 PCI/L 4.24 BETA 6.00 2.27 PCI/L 3.60 Uranium-233/234 5.57 1.43 PCI/L 0.721 Uranium-235/236 0.284 0.452 PCI/L U

0.625 Uranium-238 2.58 0.983 8.43 PCI/L 0.557 Uranium-235 0.101 0.00603 UG/L 0.010 Uranium-238 10.7 0.534 10.8 UG/L J

0.067 Fluoride 0.980 MG/L 0.033 Nitrogen, Nitrate/Nitrite ND MG/L U

0.017 ALPHA 136 11.2 PCI/L 4.92 BETA 52.7 3.86 PCI/L 3.03 Uranium-233/234 76.9 4.60 PCI/L 0.531 Uranium-235/236 4.67 1.27 PCI/L 0.264 Uranium-238 48.7 3.66 130 PCI/L 0.395 Uranium-235 1.77 0.0898 UG/L 0.050 Uranium-238 147 7.33 149 UG/L 0.335 Fluoride 0.489 MG/L 0.033 Nitrogen, Nitrate/Nitrite 0.098 MG/L 0.017 ALPHA 8.48 2.98 PCI/L 3.50 BETA 6.11 2.01 PCI/L 3.15 Uranium-233/234 4.6 1.27 PCI/L 0.822 Uranium-235/236 0.518 0.544 PCI/L U

0.678 Uranium-238 2.65 0.973 7.77 PCI/L 0.698 Uranium-235 0.074 0.00497 UG/L 0.010 Uranium-238 7.65 0.38 7.72 UG/L 0.067 8/28/2019 BA1-B 8/27/2019 8/28/2019 8/26/2019 02W35 02W08 02W17 02W32 Page 6 of 8

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 ANNUAL ENVIRONMENTAL DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL Fluoride 0.250 MG/L 0.033 Nitrogen, Nitrate/Nitrite ND MG/L U

0.017 ALPHA 52.7 5.97 PCI/L 4.46 BETA 17.1 2.100 PCI/L 2.76 Uranium-233/234 29.2 3.00 PCI/L 0.612 Uranium-235/236 2.02 0.909 PCI/L 0.545 Uranium-238 18.7 2.41 49.9 PCI/L 0.617 Uranium-235 0.692 0.035 UG/L 0.010 Uranium-238 53.7 2.68 54.4 UG/L 0.067 Fluoride 0.660 MG/L 0.033 Nitrogen, Nitrate/Nitrite ND MG/L U

0.017 ALPHA 145 8.74 PCI/L 5.01 BETA 59.1 3.20 PCI/L 3.10 Uranium-233/234 101 5.50 PCI/L 0.752 Uranium-235/236 6.82 1.62 PCI/L 0.775 Uranium-238 62.1 4.31 170 PCI/L 0.651 Uranium-235 2.17 0.11 UG/L 0.050 Uranium-238 171 8.53 173 UG/L 0.335 Fluoride 0.758 MG/L 0.033 Nitrogen, Nitrate/Nitrite ND MG/L U

0.017 ALPHA 711 31.4 PCI/L J

4.98 BETA 417 10.4 PCI/L 3.11 Uranium-233/234 743 23.1 PCI/L 1.53 Uranium-235/236 52.2 6.85 PCI/L 1.42 Uranium-238 452 18.1 1247 PCI/L 1.52 Uranium-235 19.3 0.976 UG/L 0.400 Uranium-238 1470 73.3 1489 UG/L 1.34 Fluoride 0.461 MG/L 0.033 Nitrogen, Nitrate/Nitrite ND MG/L U

0.017 ALPHA 5.05 2.23 PCI/L J

3.07 BETA 1.27 2.55 PCI/L U

4.32 Uranium-233/234 6.06 1.31 PCI/L 0.555 Uranium-235/236 0.376 0.430 PCI/L U

0.537 Uranium-238 3.61 1.01 10.0 PCI/L 0.341 Uranium-235 0.088 0.00551 UG/L 0.010 Uranium-238 8.82 0.442 8.91 UG/L 0.067 Fluoride 1.06 MG/L 0.033 Nitrogen, Nitrate/Nitrite ND MG/L U

0.017 ALPHA 4.43 3.19 PCI/L U

4.70 BETA 4.83 2.17 PCI/L 3.30 Uranium-233/234 5.12 1.39 PCI/L 0.733 Uranium-235/236 0.635 0.604 PCI/L U

0.637 Uranium-238 1.89 0.883 7.65 PCI/L 0.721 Uranium-235 0.03 0.00366 UG/L J

0.010 Uranium-238 3.07 0.155 3.10 UG/L 0.067 BA1-B 8/27/2019 8/28/2019 8/28/2019 02W43 02W44 TMW-13 BA1 -

Alluvium 02W16 8/26/2019 8/28/2019 02W09 BA1-Sandstone A Page 7 of 8

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 ANNUAL ENVIRONMENTAL DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL Fluoride 0.912 MG/L 0.033 Nitrogen, Nitrate/Nitrite 0.021 MG/L J

0.017 ALPHA 43.7 7.56 PCI/L 4.86 BETA 23.4 2.91 PCI/L 3.14 Uranium-233/234 41.9 3.42 PCI/L 0.717 Uranium-235/236 2.58 0.973 PCI/L 0.585 Uranium-238 24.9 2.64 69.4 PCI/L 0.602 Uranium-235 0.794 0.043 UG/L 0.050 Uranium-238 67.6 3.38 68.4 UG/L 0.067 Fluoride 0.528 MG/L 0.033 Nitrogen, Nitrate/Nitrite 2.36 MG/L 0.017 ALPHA 89.7 10.9 PCI/L 4.67 BETA 21.7 2.82 PCI/L 2.97 Uranium-233/234 45.0 3.38 PCI/L 0.497 Uranium-235/236 2.57 0.921 PCI/L 0.452 Uranium-238 22.1 2.38 69.7 PCI/L 0.463 Uranium-235 0.928 0.0493 UG/L 0.050 Uranium-238 61.9 3.09 62.8 UG/L 0.067 Fluoride 0.535 MG/L 0.033 Nitrogen, Nitrate/Nitrite 0.280 MG/L 0.085 ALPHA 458 14.5 PCI/L 3.40 BETA 172 4.77 PCI/L 3.05 Uranium-233/234 343 14.0 PCI/L 0.940 Uranium-235/236 20.5 3.83 PCI/L 1.12 Uranium-238 183 10.2 547 PCI/L 1.04 Uranium-235 7.72 0.392 UG/L 0.200 Uranium-238 514 25.7 522 UG/L 1.34 Fluoride 0.414 MG/L 0.033 Nitrogen, Nitrate/Nitrite 29.1 MG/L 1.70 ALPHA 3.48 3.11 PCI/L U

4.85 BETA 8.51 2.15 PCI/L 2.87 Uranium-233/234 1.54 0.696 PCI/L 0.604 Uranium-235/236 0.130 0.298 PCI/L U

0.473 Uranium-238 1.85 0.733 3.52 PCI/L 0.484 Uranium-235 0.033 0.004 UG/L J

0.010 Uranium-238 3.79 0.191 3.82 UG/L 0.067 Notes:

Highlighted cells indicate results above remediation goal:

Red bold font indicates information not provided in laboratory electronic deliverable.

Nitrate in WU-PBA: 52 mg/L Nitrate elsewhere: 22.9 mg/L Fluoride: 4 mg/L Uranium: 30 µg/L Uranium Activity: 180 pCi/L Uranium Concentration: 119 ug/L in WAA U>DCGL, 1206-NORTH, & WU-BA3 Uranium Concentration: 201 ug/L elsewhere 8/28/2019 8/26/2019 8/28/2019 1354 BA1 -

Sandstone B 02W27 02W42 02W28 8/28/2019 WA -

Sandstone BA1-Sandstone A DEQ Criteria NRC Criteria Page 8 of 8

ATTACHMENT 2 Tc-99 GROUNDWATER ASSESSMENT DATA

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 TC-99 ASSESSMENT DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Activity or Concentration Units Lab or Data Review Qual MDL ALPHA 185 15.7 PCI/L 4.81 BETA 91.6 5.16 PCI/L 3.42 Technetium-99 80.1 30.9 PCI/L 48.7 Uranium-233/234 155 7.81 216 PCI/L 0.864 Uranium-235 3.14 0.158 144 UG/L 0.05 Uranium-235/236 8.65 2.08 PCI/L 0.773 Uranium-238 141 7.06 UG/L 0.335 Uranium-238 51.9 4.53 PCI/L 0.675 ALPHA 176 14.5 PCI/L 4.56 BETA 52.1 4.15 PCI/L 3.45 Technetium-99 24.4 23 PCI/L U

38.3 Uranium-233/234 190 7.65 234 PCI/L 0.642 Uranium-235 4.14 0.21 92.0 UG/L 0.1 Uranium-235/236 13.4 2.27 PCI/L 0.475 Uranium-238 87.9 4.39 UG/L 0.067 Uranium-238 30.4 3.06 PCI/L 0.24 ALPHA 149 13.5 PCI/L 3.94 BETA 76.6 4.9 PCI/L 3.27 Technetium-99 101 27.3 PCI/L 41.3 Uranium-233/234 149 6.97 214 PCI/L 0.582 Uranium-235 3.04 0.153 158 UG/L 0.05 Uranium-235/236 8.83 1.91 PCI/L 0.64 Uranium-238 155 7.77 UG/L 0.335 Uranium-238 56 4.28 PCI/L 0.594 ALPHA 81 7.58 PCI/L 5.04 BETA 19.4 2.42 PCI/L 3.31 Technetium-99

-1.59 22.1 PCI/L U, R 38.5 Uranium-233/234 82.9 4.8 102 PCI/L 0.627 Uranium-235 1.68 0.0858 43.9 UG/L 0.05 Uranium-235/236 4.23 1.22 PCI/L 0.493 Uranium-238 42.2 2.11 UG/L 0.067 Uranium-238 14.7 2.03 PCI/L 0.505 ALPHA 30.8 6.81 PCI/L 4.95 BETA 27 3.23 PCI/L 3.29 Technetium-99 24.8 24.5 PCI/L U

41 WAA U>DCGL WAA-WEST 8/26/2019 T-62 8/26/2019 T-76 8/26/2019 T-64 8/26/2019 T-79 9/3/2019 T-97 Page 1 of 7

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 TC-99 ASSESSMENT DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Activity or Concentration Units Lab or Data Review Qual MDL ALPHA 2.56 3

PCI/L U

4.93 BETA 197 6.71 PCI/L 3.04 Technetium-99 567 43.8 PCI/L 47.8 ALPHA

-0.217 2.01 PCI/L U

4.37 BETA 123 5.58 PCI/L 3.07 Technetium-99 341 35.2 PCI/L 43 ALPHA 3.63 2.96 PCI/L U

4.52 BETA 26.4 3

PCI/L 3.22 Technetium-99 45.6 26.4 PCI/L 43.1 ALPHA 7.11 3.27 PCI/L 3.82 BETA 79.5 4.78 PCI/L 4.23 Technetium-99 185 33.7 PCI/L 47.8 ALPHA 8.9 3.82 PCI/L 4.37 BETA 144 6.07 PCI/L 3.46 Technetium-99 368 36.4 PCI/L 43.6 ALPHA 74.8 10.2 PCI/L 4.86 BETA 160 6.36 PCI/L 3.01 Technetium-99 272 34.1 PCI/L 44.2 ALPHA 7.36 3.82 PCI/L 4.84 BETA 27.2 2.97 PCI/L 2.96 Technetium-99 57.5 26.3 PCI/L 42.1 ALPHA 7.95 3.41 PCI/L 4.83 BETA 81.3 3.43 PCI/L 3.16 Technetium-99 175 31 PCI/L 43.7 ALPHA 47.2 5.78 PCI/L 4.29 BETA 37.9 3.03 PCI/L 3.69 Technetium-99 15.2 25.6 PCI/L U

43.5 ALPHA 33 7.21 PCI/L 8.5 BETA 35 3.7 PCI/L 4.8 Technetium-99 46.4 25.7 PCI/L 41.8 ALPHA 21.4 6.52 PCI/L 4.84 BETA 14.3 2.55 PCI/L 3.1 Technetium-99 19.5 25.1 PCI/L U

42.4 ALPHA 119 11.1 PCI/L 3.85 BETA 24.8 2.99 PCI/L 3.1 Technetium-99

-6.01 26.8 PCI/L U, R 46.9 WU-1348 WAA-BLUFF WAA-EAST T-58 9/3/2019 T-86 9/3/2019 T-87 9/3/2019 9/3/2019 T-90 9/4/2019 1348 9/3/2019 T-60 9/3/2019 T-59 9/3/2019 T-63 T-54 T-55 T-56 T-57 9/3/2019 9/3/2019 9/3/2019 9/3/2019 Page 2 of 7

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 TC-99 ASSESSMENT DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Activity or Concentration Units Lab or Data Review Qual MDL ALPHA 24.9 4.68 PCI/L 3.65 BETA 347 7.21 PCI/L R

3.69 Technetium-99 662 40.8 PCI/L 40 ALPHA 55.5 7.8 PCI/L 4.29 BETA 192 6.76 PCI/L 2.88 Technetium-99 251 32.4 PCI/L 42.4 ALPHA 42.4 5.56 PCI/L 3.71 BETA 164 6.06 PCI/L 2.88 Technetium-99 299 32.1 PCI/L 39.5 ALPHA 1.3 2.27 PCI/L U

4.04 BETA 1.53 1.85 PCI/L U

3.12 Technetium-99

-16.5 25.1 PCI/L U, R 44.7 ALPHA 2.33 2.11 PCI/L U

3.4 BETA 2.58 1.77 PCI/L U

2.86 Technetium-99

-9.17 25.8 PCI/L U, R 45.4 ALPHA 16 3

PCI/L 3.07 BETA 407 5.59 PCI/L 2.13 Technetium-99 982 48.1 PCI/L 40.7 ALPHA 19.1 3.57 PCI/L 3.87 BETA 409 5.71 PCI/L 2.24 Technetium-99 963 48.5 PCI/L 41.7 ALPHA 2.51 1.17 PCI/L 1.66 BETA 5.6 1.27 PCI/L 1.91 Technetium-99

-13.4 22.8 PCI/L U, R 40.6 ALPHA 0.853 1.85 PCI/L U

3.13 BETA 809 8.27 PCI/L 3.13 Technetium-99 1650 59.4 PCI/L 40.9 ALPHA 1.58 2.18 PCI/L U

3.39 BETA 739 7.54 PCI/L 1.65 Technetium-99 1600 58.3 PCI/L 40.5 ALPHA 11.2 3.03 PCI/L 3.65 BETA 6.32 1.42 PCI/L 2.14 Technetium-99 4.98 24.7 PCI/L U

42.7 ALPHA 12.8 2.26 PCI/L 2.7 BETA 19.8 1.84 PCI/L 2.37 Technetium-99 23.5 25.5 PCI/L U

42.9 ALPHA 1.57 1.34 PCI/L U

2.18 BETA 20.7 1.63 PCI/L 1.9 Technetium-99 35.4 24.6 PCI/L U

40.4 ALPHA 31.3 6.24 PCI/L 5.83 BETA 313 8.25 PCI/L 6.49 Technetium-99 705 44.5 PCI/L 43.6 ALPHA 21.8 3.27 PCI/L 3.3 BETA 460 6.21 PCI/L 2.61 Technetium-99 941 49.8 PCI/L 44.1 WU-UP1 WU-UP2 9/4/2019 1313DUP 9/4/2019 1336ADUP 9/4/2019 1336A 9/4/2019 1337 9/5/2019 1401 9/4/2019 1389 9/4/2019 1347 1395 9/4/2019 9/5/2019 1346DUP 9/5/2019 1346 9/4/2019 1387 1312 9/4/2019 1313 9/4/2019 1396 9/4/2019 9/5/2019 1402 Page 3 of 7

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 TC-99 ASSESSMENT DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Activity or Concentration Units Lab or Data Review Qual MDL ALPHA 880 31.2 PCI/L J

4.09 BETA 316 9.52 PCI/L 4.4 Technetium-99 28.2 23.5 PCI/L U

39.1 Uranium-233/234 1230 24.2 1,670 PCI/L 1.19 Uranium-235 24.5 1.24 981 UG/L 0.5 Uranium-235/236 79.7 6.85 PCI/L 1

Uranium-238 956 47.8 UG/L 3.35 Uranium-238 360 13.1 PCI/L 1.03 ALPHA 821 31.2 PCI/L J

4.28 BETA 338 8.96 PCI/L 3.05 Technetium-99 13.2 23 PCI/L U

39.2 Uranium-233/234 1230 24 1,680 PCI/L 1.15 Uranium-235 25.7 1.3 1,019 UG/L 0.5 Uranium-235/236 75.9 6.65 PCI/L 1.22 Uranium-238 993 49.7 UG/L 3.35 Uranium-238 374 13.2 PCI/L 1.02 ALPHA 109 11 PCI/L J

4.62 BETA 72.9 4.79 PCI/L 3.13 Technetium-99 12.3 22.2 PCI/L U

37.7 Uranium-233/234 85.5 4.92 188 PCI/L 0.545 Uranium-235 1.17 0.061 169 UG/L 0.05 Uranium-235/236 5.87 1.45 PCI/L 0.504 Uranium-238 168 8.39 UG/L 0.335 Uranium-238 96.8 5.24 PCI/L 0.516 ALPHA 347 18.6 PCI/L 4.93 BETA 137 6.15 PCI/L 3.4 Technetium-99 51.4 24.1 PCI/L 38.7 Uranium-233/234 255 9.59 383 PCI/L 0.633 Uranium-235 4.93 0.249 293 UG/L 0.1 Uranium-235/236 17.7 2.83 PCI/L 0.707 Uranium-238 288 14.4 UG/L 0.67 Uranium-238 110 6.29 PCI/L 0.657 ALPHA 35 6.95 PCI/L 4.88 BETA 15.9 2.63 PCI/L 3.16 Technetium-99 5.26 25.2 PCI/L U

43.5 ALPHA 0.392 2.28 PCI/L U

4.3 BETA 2.24 1.75 PCI/L U

2.86 Technetium-99

-9.58 22.9 PCI/L U, R 40.5 WU-BA3 WU-PBA 1319B-1 8/26/2019 1352 8/26/2019 1351DUP 9/4/2019 1319B-2 9/4/2019 8/26/2019 1351 8/26/2019 1356 Page 4 of 7

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 TC-99 ASSESSMENT DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Activity or Concentration Units Lab or Data Review Qual MDL ALPHA 722 28.9 PCI/L 4.88 BETA 120 5.67 PCI/L 2.95 Technetium-99 11.4 22.8 PCI/L U

38.9 Uranium-233/234 563 8.89 693 PCI/L 0.627 Uranium-235 17.7 0.89 427 UG/L 0.25 Uranium-235/236 31.8 2.35 PCI/L 0.135 Uranium-238 409 20.4 UG/L 1.68 Uranium-238 98.2 3.72 PCI/L 0.49 ALPHA 118 12.9 PCI/L 4.86 BETA 68 4.57 PCI/L 3.34 Technetium-99 46 24.7 PCI/L 40 Uranium-233/234 119 4.57 174 PCI/L 0.495 Uranium-235 2.54 0.128 146 UG/L 0.05 Uranium-235/236 7.12 1.25 PCI/L 0.17 Uranium-238 143 7.17 UG/L 0.335 Uranium-238 48 2.92 PCI/L 0.506 ALPHA 4.33 7.45 PCI/L U

13 BETA 9.36 6.21 PCI/L U

10.2 Technetium-99

-1.8 22.5 PCI/L U, R 39.2 Uranium-233/234 1.64 0.713 2.96 PCI/L 0.615 Uranium-235 0.0234 0.00353 2.99 UG/L J

0.01 Uranium-235/236 0.0236 0.246 PCI/L U

0.514 Uranium-238 2.97 0.15 UG/L 0.067 Uranium-238 1.3 0.633 PCI/L 0.55 ALPHA 1.96 9.97 PCI/L U

17.9 BETA 2.09 6.61 PCI/L U

11.3 Technetium-99 2.27 27.3 PCI/L U

47.3 Uranium-233/234 1.59 0.679 3.64 PCI/L 0.522 Uranium-235 0.0244 0.00355 2.92 UG/L J

0.01 Uranium-235/236 0.371 0.399 PCI/L U

0.454 Uranium-238 2.9 0.147 UG/L 0.067 Uranium-238 1.68 0.679 PCI/L 0.405 ALPHA 4.37 3.27 PCI/L U

4.96 BETA 0.271 1.82 PCI/L U

3.2 Technetium-99

-5.81 21.5 PCI/L U, R 37.7 Uranium-233/234 1.25 0.642 1.92 PCI/L 0.623 Uranium-235 ND 0.00336 1.03 UG/L U

0.01 Uranium-235/236 0.15 0.295 PCI/L U

0.409 Uranium-238 1.03 0.0562 UG/L 0.067 Uranium-238 0.519 0.41 PCI/L 0.382 ALPHA 493 12.5 PCI/L 2.67 BETA 237 4.59 PCI/L 2.41 Technetium-99 23 24.4 PCI/L U

40.9 SURFACE WATER 1206-NORTH BA1-A 9/5/2019 8/27/2019 1202 (Downstream) 8/27/2019 1201 (Upstream) 1315R 8/27/2019 1314 8/27/2019 MWWA-09 8/27/2019 MWWA-03 Page 5 of 7

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 TC-99 ASSESSMENT DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Activity or Concentration Units Lab or Data Review Qual MDL ALPHA 98 10.2 PCI/L J

4.66 BETA 49.1 3.74 PCI/L 3.08 Technetium-99

-4 22.4 PCI/L U, R 39.1 Uranium-233/234 114 5.8 200 PCI/L 0.566 Uranium-235 2.23 0.113 185 UG/L 0.05 Uranium-235/236 8.41 1.77 PCI/L 0.526 Uranium-238 183 9.16 UG/L 0.335 Uranium-238 77.5 4.79 PCI/L 0.425 ALPHA 1830 46.2 PCI/L 4.89 BETA 648 12.4 PCI/L 2.96 Technetium-99 12.5 22.2 PCI/L U

37.7 Uranium-233/234 1060 20.7 1,825 PCI/L 1.36 Uranium-235 24.3 1.22 2,084 UG/L 0.4 Uranium-235/236 63.2 5.62 PCI/L 0.389 Uranium-238 2060 103 UG/L 2.68 Uranium-238 702 16.8 PCI/L 1.01 ALPHA 1470 35.4 PCI/L 4.64 BETA 691 12.7 PCI/L 3.04 Technetium-99

-8.09 23.5 PCI/L U, R 41.3 Uranium-233/234 1040 18.6 1,775 PCI/L 1.59 Uranium-235 24.8 1.25 2,125 UG/L 0.4 Uranium-235/236 56.3 4.84 PCI/L 1.18 Uranium-238 2100 105 UG/L 2.68 Uranium-238 679 15 PCI/L 1.24 ALPHA 213 11 PCI/L 5.94 BETA 121 4.22 PCI/L 3.16 Technetium-99

-5.14 21.2 PCI/L U, R 37.2 Uranium-233/234 190 7.78 323 PCI/L 0.535 Uranium-235 4.92 0.248 372 UG/L 0.1 Uranium-235/236 16.9 2.6 PCI/L 0.675 Uranium-238 367 18.4 UG/L 0.67 Uranium-238 116 6.08 PCI/L 0.459 BA1-A BA1-B 8/27/2019 02W06 8/28/2019 TMW-09DUP 8/28/2019 TMW-09 8/28/2019 TMW-08 Page 6 of 7

CIMARRON ENVIRONMENTAL RESPONSE TRUST 2019 TC-99 ASSESSMENT DATA Area Sample No Coll Date Parameter Lab Result Uncertainty Total Activity or Concentration Units Lab or Data Review Qual MDL ALPHA 113 10.2 PCI/L 3.7 BETA 48.2 3.69 PCI/L 3.04 Technetium-99 6.17 21.7 PCI/L U

37.3 Uranium-233/234 73.8 5.52 127 PCI/L 0.711 Uranium-235 1.73 0.088 141 UG/L 0.05 Uranium-235/236 4.11 1.47 PCI/L 0.398 Uranium-238 139 6.93 UG/L 0.335 Uranium-238 48.7 4.49 UG/L 0.655 ALPHA 268 10.5 PCI/L 3.86 BETA 114 3.35 PCI/L 2.52 Technetium-99 11.2 22.8 PCI/L U

38.9 ALPHA 145 8.74 PCI/L 5.01 BETA 59.1 3.2 PCI/L 3.1 Technetium-99

-3.96 23.6 PCI/L U, R 41.2 Uranium-233/234 101 5.5 170 PCI/L 0.752 Uranium-235 2.17 0.11 173 UG/L 0.05 Uranium-235/236 6.82 1.62 PCI/L 0.775 Uranium-238 171 8.53 UG/L 0.335 Uranium-238 62.1 4.31 PCI/L 0.651 ALPHA 14.4 3.36 PCI/L 4.33 BETA 14.3 2.01 PCI/L 2.87 Technetium-99 4

23.8 PCI/L U

41.2 ALPHA 711 31.4 PCI/L J

4.98 BETA 417 10.4 PCI/L 3.11 Technetium-99

-4.22 21.2 PCI/L U, R 37.2 Uranium-233/234 743 23.1 1,247 PCI/L 1.53 Uranium-235 19.3 0.976 1,489 UG/L 0.4 Uranium-235/236 52.2 6.85 PCI/L 1.42 Uranium-238 1470 73.3 UG/L 1.34 Uranium-238 452 18.1 PCI/L 1.52 ALPHA 43.1 8.03 PCI/L 9.5 BETA 12.3 3.99 PCI/L 6.33 Technetium-99

-17.2 22 PCI/L U, R 39.4 Notes:

Tc-99 exceeds 900 pCi/L (MCL)

Red bold font indicates information not provided in laboratory electronic deliverable.

BA1-B 8/28/2019 02W08 8/28/2019 02W44 9/5/2019 02W19 9/5/2019 TMW-24 8/28/2019 TMW-13 9/5/2019 1363 Page 7 of 7

ATTACHMENT 3 OXIDATION-REDUCTION ASSESSMENT DATA

CIMARRON ENVIRONMENTAL RESPONSE TRUST 3RD QUARTER 2019 REDOX DATA Area Sample No Sample Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL 02W02LF 08/29/19 Dissolved Oxygen 0.14 MG/L 02W02LF 08/29/19 ORP

-56.6 MV 02W02LF 08/29/19 Uranium-235 22.6 1.14 UG/L 0.5 02W02LF 08/29/19 Uranium-238 1810 90.4 1832.60 UG/L 3.35 02W28 08/28/19 Dissolved Oxygen 0.25 MG/L 02W28 08/28/19 ORP 80.4 MV 02W28 08/28/19 Uranium-235 0.794 0.043 UG/L 0.05 02W28 08/28/19 Uranium-238 67.6 3.38 68.39 UG/L 0.067 02W28LF 08/28/19 Uranium-235 0.649 0.0326 UG/L 0.01 02W28LF 08/28/19 Uranium-238 52.5 2.62 53.15 UG/L 0.067 1404LF 08/29/19 Dissolved Oxygen 0.1 MG/L 1404LF 08/29/19 ORP

-140.6 MV 1404LF 08/29/19 Uranium-235 0.587 0.0296 UG/L 0.01 1404LF 08/29/19 Uranium-238 48.6 2.43 49.19 UG/L 0.067 1405LF 08/29/19 Dissolved Oxygen 0.22 MG/L 1405LF 08/29/19 ORP 15.6 MV 1405LF 08/29/19 Uranium-235 3.26 0.164 UG/L 0.05 1405LF 08/29/19 Uranium-238 265 13.3 268.26 UG/L 0.335 TMW-07LF 08/29/19 Dissolved Oxygen 0.16 MG/L TMW-07LF 08/29/19 ORP

-119 MV TMW-07LF 08/29/19 Uranium-235 0.204 0.0107 UG/L 0.01 TMW-07LF 08/29/19 Uranium-238 17.3 0.866 17.50 UG/L 0.067 TMW-09LF 08/28/19 Dissolved Oxygen 0.11 MG/L TMW-09LF 08/28/19 ORP 34.5 MV TMW-09LF 08/28/19 Uranium-235 22.7 1.14 UG/L 0.4 TMW-09LF 08/28/19 Uranium-238 1940 96.8 1962.70 UG/L 2.68 TMW-09DUPLF 08/28/19 Uranium-235 21.7 1.09 UG/L 0.4 TMW-09DUPLF 08/28/19 Uranium-238 1900 95 1921.70 UG/L 2.68 TMW-09 08/28/19 Uranium-235 24.3 1.22 UG/L 0.4 TMW-09 08/28/19 Uranium-238 2060 103 2084.30 UG/L 2.68 TMW-09DUP 08/28/19 Uranium-235 24.8 1.25 UG/L 0.4 TMW-09DUP 08/28/19 Uranium-238 2100 105 2124.80 UG/L 2.68 TR-08LF 08/29/19 Dissolved Oxygen 0.05 MG/L TR-08LF 08/29/19 ORP

-114.2 MV TR-08LF 08/29/19 Uranium-235 11.6 0.583 UG/L 0.2 TR-08LF 08/29/19 Uranium-238 1040 52.1 1051.60 UG/L 1.34 TR-09DUPLF 08/29/19 Dissolved Oxygen 0.11 MG/L TR-09DUPLF 08/29/19 ORP 64.7 MV TR-09DUPLF 08/29/19 Uranium-235 14 0.705 UG/L 0.25 TR-09DUPLF 08/29/19 Uranium-238 1310 65.5 1324.00 UG/L 1.34 TR-09LF 08/29/19 Uranium-235 14.4 0.723 UG/L 0.25 TR-09LF 08/29/19 Uranium-238 1320 66.1 1334.40 UG/L 1.34 TR-10LF 08/29/19 Dissolved Oxygen 0.16 MG/L TR-10LF 08/29/19 ORP 54 MV TR-10LF 08/29/19 Uranium-235 6.9 0.349 UG/L 0.15 TR-10LF 08/29/19 Uranium-238 596 29.8 602.90 UG/L 0.67 BA1-A Page 1 of 2

CIMARRON ENVIRONMENTAL RESPONSE TRUST 3RD QUARTER 2019 REDOX DATA Area Sample No Sample Date Parameter Lab Result Uncertainty Total Uranium Units Lab or Data Review Qual MDL 02W07LF 08/29/19 Dissolved Oxygen 0.06 MG/L 02W07LF 08/29/19 ORP

-107.5 MV 02W07LF 08/29/19 Uranium-235 12.5 0.631 UG/L 0.2 02W07LF 08/29/19 Uranium-238 960 48 972.50 UG/L 1.34 02W08LF 08/28/19 Dissolved Oxygen 0.05 MG/L 02W08LF 08/28/19 ORP 69.6 MV 02W08LF 08/28/19 Uranium-235 0.0369 0.00381 UG/L J

0.01 02W08LF 08/28/19 Uranium-238 4.56 0.229 4.60 UG/L 0.067 02W08 08/28/19 Uranium-235 1.73 0.088 UG/L 0.05 02W08 08/28/19 Uranium-238 139 6.93 140.73 UG/L 0.335 02W32LF 08/28/19 Dissolved Oxygen 0.03 MG/L 02W32LF 08/28/19 ORP

-88.4 MV 02W32LF 08/28/19 Uranium-235 1.77 0.0902 UG/L 0.05 02W32LF 08/28/19 Uranium-238 146 7.3 147.77 UG/L 0.335 02W32DUPLF 08/28/19 Uranium-235 1.71 0.0869 UG/L 0.05 02W32DUPLF 08/28/19 Uranium-238 140 7.02 141.71 UG/L 0.335 02W32 08/28/19 Uranium-235 1.85 0.0939 UG/L 0.05 02W32 08/28/19 Uranium-238 153 7.65 154.85 UG/L 0.335 02W32DUP 08/28/19 Uranium-235 1.86 0.0946 UG/L 0.05 02W32DUP 08/28/19 Uranium-238 150 7.51 151.86 UG/L 0.335 02W44LF 08/28/19 Dissolved Oxygen 0.16 MG/L 02W44LF 08/28/19 ORP

-71.2 MV 02W44LF 08/28/19 Uranium-235 0.772 0.042 UG/L 0.05 02W44LF 08/28/19 Uranium-238 60.8 3.04 61.57 UG/L 0.067 02W44 08/28/19 Uranium-235 2.17 0.11 UG/L 0.05 02W44 08/28/19 Uranium-238 171 8.53 173.17 UG/L 0.335 TMW-13LF 08/28/19 Dissolved Oxygen 0.03 MG/L TMW-13LF 08/28/19 ORP

-114.6 MV TMW-13LF 08/28/19 Uranium-235 33.5 1.68 UG/L 0.5 TMW-13LF 08/28/19 Uranium-238 2530 127 2563.50 UG/L 3.35 TMW-13 08/28/19 Uranium-235 19.3 0.976 UG/L 0.4 TMW-13 08/28/19 Uranium-238 1470 73.3 1489.30 UG/L 1.34 Notes: Highlighted cells indicate results above remediation goal:

Red bold font indicates information not provided in laboratory electronic deliverable.

Bold green font indicates field parameters.

Nitrate in WU-PBA: 52 mg/L Nitrate elsewhere: 22.9 mg/L Fluoride: 4 mg/L Uranium: 30 µg/L Uranium Activity: 180 pCi/L Uranium Concentration: 119 ug/L in WAA U>DCGL, 1206-NORTH, & WU-BA3 Uranium Concentration: 201 ug/L elsewhere DEQ Criteria NRC Criteria BA1-B Page 2 of 2