ML19186A241

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Cimarron Environmental Response Trust 2019 Groundwater Data Evaluation Update
ML19186A241
Person / Time
Site: 07000925
(SNM-0928)
Issue date: 06/28/2019
From:
Burns & McDonnell Engineering Co
To:
Environmental Properties Management, Office of Nuclear Material Safety and Safeguards, NRC Region 4
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BURNS~£DONNELL.

  • Cimarron Environmental Response Trust 2019 Groundwater Data Evaluation Update Prepared for Environmental Properties Management LLC June 28, 2019

BURNS ~

~DONNELL June 14, 2019 Jeff Lux Project Manager Environmental Properties Management 615 N. Hudson, Suite 200 Oklahoma City, OK, 73102 Re: 2019 Groundwater Data Evaluation

Dear Jeff Lux:

Groundwater assessment sampling events conducted in 2013 and 2015 consisted of the collection and analysis of groundwater samples from 128 and 230 monitor wells, respectively. Comparison of uranium concentration data from the 2013 and 2015 sampling events indicated that uranium concentrations at some locations varied significantly and demonstrated the need for an evaluation of variability in historical site groundwater data. An evaluation was subsequently conducted using groundwater data collected from 2002 through 2016. The primary objective of the evaluation was to determine if the variability in uranium concentration was an artifact of seasonal variation or groundwater levels (i.e., saturated thickness). Additionally, depth to water (DTW) data were evaluated to determine ifthere is a seasonal pattern in groundwater levels for six geographic/lithologic units (Burial Area #1 [BAI] Alluvium, BAl Transition Zone, Western Alluvial Area, 1206 Drainage Area, Sandstone A, and Sandstone B).

In 2018, the evaluation was updated to include groundwater data from 2017. As stated in the 2018 Groundwater Evaluation Update report1, the evaluation results generally indicated no discernable relationship between contaminant concentration and DTW, or between seasonality and contaminant concentration, with the exception of a potential relationship between uranium concentrations and DTW at Monitor Wells 1385, 1393, T-91 and T-100. Although data were limited for some locations, the data were sufficient to show that there was no widespread or consistent correlation between time of year or saturated thickness and contaminant concentration.

This report summarizes the evaluation of groundwater data collected from 2002 through 2018 and is an update to the 2018 Groundwater Evaluation Update report. The report also presents conclusions derived from the updated evaluation.

Methodology Contaminant of concern (COC) concentration data generated for the Cimarron site spans a period of three decades; however, sampling methodology varied significantly prior to 2002. Due to groundwater remediation efforts focused on treatment for uranium and nitrate, the evaluation presented herein was limited to these COCs and data collected from 2002 through 2018.

1 Burns & McDonnell Engineering Company, Inc. 201 7 Groundwater Evaluation Update. March 27, 2018.

425 S. Woods Mill Road\\ Suite 300 \\ Chesterfield, MO 63017 0 314-682-1500 \\ F 314-682-1600 \\ burnsmcd.com

BURNS~

~DONNELL Jeff Lux Environmental Properties Management June 14, 2019 Page 2 Data from the following 45 monitor wells were analyzed during this evaluation:

Monitor Well ID Geographic/Lithological Monitor Well ID Geographic/Lithological Unit Unit 02W32 BAl Alluvium TMW-13 WAA Alluvium 02W08 BAl Alluvium 02W01 BAl Transition Zone 02W44 BAl Alluvium 02W39 BAl Transition Zone 1361 BAl Alluvium TMW-09 BAl Transition Zone 1365 BAl Alluvium MWWA-03 1206 Drainage 1373 BAl Alluvium MWWA-09 1206 Drainage T-62 WAAAlluvium 1331 Sandstone A T-76 WAA Alluvium 1312 Sandstone A T-69 WAAAlluvium 1313 Sandstone A T-77 WAAAlluvium 1348 Sandstone A T-79 WAAAlluvium 1356 Sandstone A T-57 WAAAlluvium 1352 Sandstone A T-58 WAAAlluvium 1381 Sandstone A T-86 WAAAlluvium 1385 Sandstone A T-96 WAAAlluvium 1387 Sandstone A T-97 WAA Alluvium 1393 Sandstone A T-54 WAAAlluvium TMW-24 Sandstone B T-59 WAAAlluvium 1319B-3 Sandstone B T-91 WAAAlluvium 1319B-1 Sandstone B T-99 WAAAlluvium 02W40 Sandstone B T-88 WAAAlluvium 1315R Sandstone B T-61 WAAAlluvium 1346 Sandstone B T-100 WAAAlluvium

- BAl -Burial Area #1

- W AA - Western Alluvial Area provides tabulated presentations of the data used in this evaluation. Due to the limited data sets for certain wells, rigorous statistical evaluation was not performed; nor was it considered necessary for this effort. All data was evaluated using Microsoft Excel applications.

The evaluation process and results are explained below.

Data for the monitor wells was evaluated in two ways:

1.

Review of uranium and nitrate-nitrite concentration versus DTW using graphical plots and regression analysis.

BURNS~

6DONNELL Jeff Lux Environmental Properties Management June 14, 2019 Page 3

2.

Review of uranium concentration and nitrate-nitrite concentration versus season using graphical plots and visual analysis.

Uranium and Nitrate-Nitrite Concentrations Versus DTW Uranium and nitrate-nitrite concentrations and corresponding DTW measurements were graphed to determine if there was a relationship between the concentrations and DTW. A trend (or regression) line was applied to each data set to determine the potential for a relationship between analyte concentration and DTW. The coefficient of determination ("R-squared" value) was also determined for each trend line. This value is a statistical measure of how the well the data fits the trend line. An R-squared value of 0.0 (or 0%) indicates that there is no relationship between the DTW data in the model (graph) and groundwater concentration. A value of 1.0 (or 100%)

indicates that there is a perfect correlation between DTW data in the model (graph) and the concentration data. In general, a higher R-squared value indicates a closer relationship between concentration and DTW.

The two graphs below provide examples of the concentration versus DTW evaluation. The first graph displaying the uranium and nitrate-nitrite concentrations versus DTW for Monitor Well 1393 illustrates a potential correlation between concentration and DTW (i.e., saturated thickness). Visually, the data appears to produce a general pattern, the trend line appears to fit close to aJI the data points, and the uranium versus DTW R-squared values are generally high (i.e., greater than 75%). This indicates a possible relationship between analyte concentration and saturated thinkness of the aquifer at this monitor well location.

BURNS~

SDONNELL Jeff Lux Environmental Properties Management June 14, 2019 Page 4 The second graph, displaying the uranium and nitrate-nitrite concentrations versus DTW for Monitor Well T-76, illustrates an example of data that exhibits no apparent correlation between concentration and DTW (i.e., saturated thickness). Visually, the data represents no consistent pattern, the trend line doesn't appear to fit closely with any data points, and the R-squared values are very low (i.e., well under 75%). This indicates there is little to no relationship between the analyte concentrations and saturated thickness of the aquifer at this monitor well location.

All graphs produced for this part of the evaluation are provided in Attachment 2. There is no set R-squared value to determine if a relationship between analyte concentrations and DTW exists or doesn't exist. However, a value of 75 percent was used to initially screen for potential trends in data. The following data sets had a trend line fit (R-squared) of 75 percent or greater:

Uranium and DTW-T-91, T-100, 1393, and TMW-13.

Nitrate-nitrite and DTW - none.

Seasonality of Uranium and Nitrate-Nitrite Concentrations Uranium and nitrate-nitrite concentration data were also evaluated for potential changes related to the season when the samples were collected (i.e., seasonality). Uranium and nitrate-nitrite data were divided into the four meteorological seasons:

Spring: March 1 through May 31 (Months 1 to 3)

Summer: June 1 through August 31 (Months 4 to 6)

Fall: September I through November 30 (Months 7 to 9)

BURNS~

SDONNELL Jeff Lux Environmental Properties Management June 14, 2019 Page 5 Winter: December 1 through February 28 (Months 10 to 12)

Due to a limited quantity of data points, available data were graphed for visual analysis, and no statistical evaluation was performed on the seasonality plots. Data was analyzed by observing seasonal concentration groupings and potential variations and/or trends between seasons.

Uranium and nitrate-nitrite concentration data were graphed separately for analysis. Generally, a lack of data points (particularly in the fall and winter) limited the evaluation. Additionally, only data that had quarterly measurements were included in this evaluation (2016 through 2018).

Episodic events were not included in order to remove any potential bias due to highly variable sampling numbers.

The two graphs below provide examples of the concentration seasonality evaluation. The first graph displaying seasonal nitrate-nitrite data for Monitor Well MWWA-09 illustrates an example of potential seasonality. The data is graphically grouped by season (each season is assigned a different color to aid evaluation). The spring concentrations appear to be generally lower while fall and winter are generally exhibit higher concentrations.

BURNS ~

£D0NNELL Jeff Lux Environmental Properties Management June 14, 2019 Page 6 The second graph, displaying seasonal uranium data versus for Monitor Well 1312, illustrates an example of data that exhibits no apparent seasonality. No obvious trends are observed in the data and concentrations are relatively similar for spring, summer, fall and winter, indicating no clear seasonal trend.

All graphs produced for this part of the evaluation are provided in Attachment 3.

Monitor Wells 1365 and T-62 appear to exhibit lower uranium concentrations in spring and Monitor Well MWW-09 appears to exhibit lower nitrate-nitrite concentrations in the spring; however, the sample size was insufficient to fully evaluate the trend. For the remaining monitor wells, the data either failed to exhibit a trend or the limited quantity of data precluded evaluation.

Seasonality of Water Levels In addition to the evaluation of potential variations in concentration with season, water levels were also evaluated for potential seasonal changes. The DTW measurements were divided into the same four meteorological seasons used for the concentration seasonality evaluation:

Spring: March 1 through May 31 (Months l to 3)

Summer: June I through August 31 (Months 4 to 6)

Fall: September I through November 30 (Months 7 to 9)

Winter: December 1 through February 28 (Months 10 to 12)

BURNS~

6DONNELL Jeff Lux Environmental Properties Management June 14, 2019 Page 7 The DTW measurements for monitor wells located in specific geographic/stratigraphic locations were graphed separately since water levels within the same stratigraphic unit and geographic location are expected to respond in a relatively consistent manner. Conversely, water levels within different stratigraphic units and/or different locations may not respond in a similar fashion. DTW measurements for multiple site areas and stratigraphic units were graphed separately for analysis. A lack of data points (particularly in the summer, fall, and winter) limited the evaluation. Additionally, only data that had quarterly measurements were included in this evaluation (2016 through 2018). Episodic events were not included in order to remove any potential bias due to highly variable sampling numbers.

The two graphs below provide examples of the DTW seasonality evaluation. The first graph displaying seasonal DTW measurements for 1206 Drainage illustrates an example of potential seasonality. The data is graphically grouped by season (each season is assigned a different color to aid evaluation). The range of winter and spring DTW appear to be high, with the average DTW measurement less than the average summer and fall. Summer and fall DTW measurements tend to be relatively consistent and average higher than winter and spring. However, there are fewer data points for winter, which increases the uncertainty of the analysis.

BURNS~

SDONNELL Jeff Lux Environmental Properties Management June 14, 2019 Page 8 The second graph, displaying seasonal DTW measurements for W AA Alluvium, illustrates an example of data that exhibits no apparent seasonality. No obvious trends are observed in the data and DTW are similar for spring, summer, fall and winter, indicating no clear seasonal trend.

All graphs produced for this part of the evaluation are provided in Attachment 4. No seasonal trends were identified in the data associated with the 10 monitor wells screened in Sandstone A or monitoring wells screened in unconsolidated materials in W AA Alluvium. For the evaluated monitor wells screened in Sandstone Band unconsolidated materials (BAI Alluvium, BAI Transition Zone, and 1206 Drainage Area), DTW appeared to have, on average, slightly higher measurements (i.e., lower water elevations) in summer and fall. Sandstone B graph illustrates two distinct DTW groupings because one well grouping is located at lower elevations in BAI and the other well grouping is located at higher elevations in the western area. The approximate difference in DTW between summer/fall and winter/spring ranged from less than one foot to roughly two feet. A smaller number of data points for certain seasons in certain areas (e.g., 1206 Drainage) increased the uncertainty of the analysis.

i

"-~)

BURNS*~-MSDONNE.LL

-*~*-

JeffLux Environmental Properties Management June 14, 2019 Page9 Conclusions

  • In-general, results of the evaluation described above indicate no discernable relationship between contaminant concentration and DTW, with the exception of a potential relationship between uranium and DTW at Monitor Wells T-91, T-100, 1393, and TMW-13. Note that two of the four Monitor Wells indicated above had three observed concentrations, which is the minimum required to produce a coefficient of determination, and any relationship is, at best, speculative.

Results of the evaluation described above also indicate no discernable relationship between seasonality and contaminant concentration, with the exception of a potential relationship for Monitoring Wells 1365, T..:62, and MWW-09.

-Monitor Well 1393 is located on the bluff, north of Uranium Pond I, and screened within Sandstone A. The potential relationship between uranium and DTW in this well was not observed in the remaining Sandstone A monitor wells. This suggests that this potential relationship is, at a minimum, spatially isolated and may be merely coincidental. It does not

. appear to be indicative of a widespread relationship between uranium concentrations and DTW within Sandstone A. While the R-squared value for the concentration versus DTW-trend associated with this monitor well are generally higher compared to those exhibited by other monitor wells, the general degree to which the data fits the linear regression remains relatively low (see Attachment 2).

Monitor Well T-91 and T-100 are located in the Western Alluvial Area and screened within the alluvium. Similar to Monitor Well 1393, the potential relationship between uranium concentrations _and DTW in Monitor Wells T-91 and T-100 was not observed in the 16 remaining Western Alluvial Area monitor wells. Monitor Well T-100 has three observed uranium concentrations, which is the minimum required to produce a coefficient of determination, and any relationship is, at best, speculative. In addition, considering that only two of the Western Alluvial Area monitor wells demonstrated any indication of a relationship between uranium concentration and DTW, the probability of the potential relationship identified for T-91 and T-100 being valid and/or consistently observed across the Western Alluvial Area is very low.

DTW measurements in areas-with wells screened in the 1206 Drainage area and in the BAI transition zone appear to be, on average, slightly higher (i.e., water level elevations are lower) during the summer and fall. No apparent relationship between season and DTW measurements was observed for wells screened within alluvium, Sandstone A, or Sandstone B. Although there were few data points for some locations, the data were sufficient to show that there is no widespread or consistent correlation between time of year or saturated thickness and contaminant concentration. These conclusions are consistent with*those resulting from the previous groundwater data evaluation conducted in 20i8, including data collected from 2002through 20171*

1'*

I

\\

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SlJ.RNS:*~MSDON.NELL

_-----~---

JeffLux Environmental Properties Management June 14, 2019 Page 10 Monitor well physical characteristics were studied to assist in determining any relationship between contaminant concentration and DTW. Monitor Wells 02W08, 02W32, 02W40, 02W44, MWWA-03, 1331, 1352, and 1356 were identified to have relatively large swings in uranium

_ *concentrations. These monitor wells are generally located within contamination source areas (e.g., burial areas or burial trenches) or directly downgradient from contamination sources. Other monitor wells with similar construction, groundwater elevations, and proximity to contamination sources do not exhibit similar large variations in uranium concentrations. The differences in concentrations changes over time between these similar monitor wells is likely due to aquifer heterogeneity.

-Sincerely,

  • J>~:1 4--

David Home*

  • Staff Geologist DCH/dch - Tabulated Data - DTW versus Contaminant Concentration Trend Charts - Seasonality versus Contaminant Concentration Charts - Seasonality versus DTW Charts * *

- Tabulated Data

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(ul!/Ll

  1. N/A 2175.2 02W32 11/9/2017 10.85
  1. N/A 5036.1 02W32 7/31/2017 12.22
  1. N/A 1031.8 02W32 2/7/2017 11.82
  1. N/A 112.4 02W32 11/5/2018 7.51
  1. N/A 51.5 02W32 8/20/2018 11.72
  1. N/A 61.1 02W32 5/7/2018 10.74
  1. N/A 57.5 02W32 2/5/2018 11.28
  1. N/A 1270 02W32 10/18/2016 12.17 0.0819 218 02W32 5/10/2016 7.94 0.0685
  1. N/A 02W32 5/29/2009 9.20
  1. N/A 283 02W32 2/17/2016 9.20 0.921 249 02W32 5/13/2013 9.65
  1. N/A 420

.02W32 8/11/2016 11.83

  1. N/A 96.9 02W32 8/29/2002 11.86 0.0445 1190 02W32 3/24/2015 12.11 0.0335 470 02W32 5/27/2014 12.21 0.25
  1. N/A 02W32 10/18/2010 12.32
  1. N/A 3410 02W32 8/1/2012 12.55 0.182
  1. N/A 02W32 8/17/2011 12.80
  1. N/A 66.5 02W08 11/5/2018 7.43
  1. N/A 42.2 02W08 8/20/2018 11.57
  1. N/A 182.1 02W08 5/7/2018 10.72
  1. N/A 145.7 02W08 2/5/2018 11.17
  1. N/A 688.9 02W08 11/9/2017 10.65
  1. N/A 381.2 02W08 7/31/2017 12.02
  1. N/A 496.0 02W08 2/7/2017 11.63
  1. N/A 29.8 02W08 10/18/2016 11.94 0.329 54.8 02W08 5/10/2016 7.78
  1. N/A 400 02W08 2/17/2016 9.08 0.050
  1. N/A 02W08 5/29/2009 9.10 2.49 188 02W08 5/13/2013 9.55
  1. N/A 26.8 02W08 8/11/2016 11.60 0.0325 744 02W08
  • 3/24/2015 11.92 0.115
  1. N/A 02W08 10/18/2010 12.02 0.0456 49.9 02W08 5/27/2014 12.05
  1. N/A 429 02W08 8/2/2012 12.28 0.0506
  1. N/A 02W08 8/2/2012 12.28 0.123
  1. N/A 02W08 8/17/2011 12.70
  1. N/A 182.3 02W44 11/5/2018 7.47
  1. N/A 225.8

,02W44 8/20/2018 11.21

  1. N/A 197.4 02W44 5/7/2018 10.60
  1. N/A 480.8 02W44 2/5/2018 10.97
  1. N/A 805.8 02W44 11/9/2017 10.48
  1. N/A 1163.5 02W44 7/31/2017 11.74

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(ue:/Ll

  1. N/A 345.1 02W44 2/7/2017 11.35
  1. N/A 275 02W44 10/18/2016 11.65 0.486 226 02W44 5/10/2016 7.84
  1. N/A 50 02W44 8/23/2007 8.24 0.050
  1. N/A 02W44 5/29/2009 9.00
  1. N/A 447

. 02W44 2/17/2016 9.00 0.800 189 02W44 5/13/2013 9.45

  1. N/A 208 02W44 8/11/2016 11.35 0.050 945 02W44 3/24/2015 11.65 0.148 250 02W44 5/27/2014 11.75 0.250
  1. N/A 02W44 10/18/2010 11.78 0.050 363 02W44 8/2/2012 12.01 0.500
  1. N/A 02W44 8/17/2011 12.30
  1. N/A 119.5 1361 11/5/2018 9.05
  1. N/A 45.2 1361 8/20/2018 12.53
  1. N/A 48.4 1361 5/7/2018 12.00
  1. N/A 130.5 1361 2/5/2018 12.34
  1. N/A 308.6 1361 11/9/2017 11.91
  1. N/A 288.2 1361 7/31/2017 13.12
  1. N/A 75.8 1361 4/20/2017 10.89
  1. N/A 169.0 1361 2/7/2017 12.71
  1. N/A 58.7 1361 10/18/2016 12.94
  1. N/A 40.4 1361 5/9/2016 9.30
  1. N/A 83.6.

1361 2/17/2016 10.45 0.0801 69.8 1361 5/22/2013 11.06

  1. N/A 44.1 1361 8/11/2016 12.75
  1. N/A 248 1361 3/23/2015 13.00
  1. N/A 67.9 1365 11/5/2018 8.63
  1. N/A 41.8 1365 8/20/2018 11.90
  1. N/A 52.5 1365 5/7/2018 11.50
  1. N/A 96.6 1365 2/5/2018 11.82
  1. N/A 147.7 1365 11/9/2017 11.38
  1. N/A 111.2 1365 7/31/2017 12.55
  1. N/A 64.6 1365 4/20/2017 10.32
  1. N/A 72.0 1365 2/7/2017 12.10
  1. N/A 63.6 1365 10/18/2016 12.31
  1. N/A 47.7 1365 5/9/2016 8.80
  1. N/A 116 1365 2/17/2016 9.95 0.0914 89~7 1365 5/22/2013 10.60
  1. N/A 28.7 1365 8/11/2016 12.17
  1. N/A 117 1365 3/23/2015 12.41 0.0799 123 1365 12/16/2014 12.79
  1. N/A 31.5 TMW-24 11/5/2018 8.24
  1. N/A 71.9 TMW-24 8/20/2018 11.41

Nitrate/

. Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

Cue:/L)

  1. N/A 95.3 TMW-24 5/7/2018 11.02
  1. N/A 57.3 TMW-24 2/5/2018 11.35
  1. N/A 41.0 TMW-24 11/9/2017 10.93
  1. N/A 35.8 TMW-24 7/31/2017 12.00
  1. N/A 50.4 TMW-24 4/19/2017 9.91
  1. N/A 40.2 TMW-24 2/7/2017 11.56
  1. N/A 53.7 TMW-24 10/18/2016 11.80 0.25
  1. N/A TMW-24 4/3/2007 7.22
  1. N/A 20.7 TMW-24 3/29/2001 8.28
  1. N/A 71.2 TMW-24 5/9/2016 8.42
  1. N/A 8.5 TMW-24 7/5/2000 8.74
  1. N/A 80.4 TMW-24 2/17/2016 9.55 0.0211 82.3 TMW-24

.5/16/2013 10.05 0.05

  1. N/A TMW-24 3/15/2004 10.86
  1. N/A 17.9 TMW-24 7/2/2001 10.98
  1. N/A 62 TMW-24 8/11/2016 11.65
  1. N/A 40.3 TMW-24 3/23/2015 11.90
  1. N/A 5.5 TMW-24 12/5/2000 11.97

. 0.05 7.15 TMW-24 12/4/2001 11.97

)

0.050 38.9 TMW-24 12/16/2014 12.23

  1. N/A 40.3 1373 11/5/2018 6.61
  1. N/A 28.9 1373 8/20/2018 7.82
  1. N/A 68.6 1373 5/7/2018 8.45
  1. N/A 64.4 1373 2/5/2018 8.51
  1. N/A 37.6 1373 11/9/2017 8.33
  1. N/A 44.1 1373 7/31/2017 9.12
  1. N/A 25.3 1373 4/19/2017 7.18
  1. N/A 31.3 1373 2/7/2017 8.39
  1. N/A 33.8 1373 10/18/2016 8.56
  1. N/A 55.1 1373 5/9/2016 6.55
  1. N/A 57.5 1373 2/17/2016 7.40
  1. N/A 29 1373 3/23/2015 8.69
  1. N/A 64.3 1373 8/11/2016 8.74 0.05 31.2 1373 12/16/2014 9.00 124.0 132.6 T-62 11/5/2018 6.96 116.0 138.6 T-62 8/20/2018 11.15 153.0 142.7 T-62 5/7/20.18 11.08 65.5 164.1 T-62

. 2/5/2018 11.15 44.5 159.9 T-62 11/8/2017 10.55 53.5 127.2 T-62 7/31/2017 10.35 25.4 110.1 T-62 4/17/2017 10.65 62.0 177.5 T-62 2/7/2017 11.45 31.1 178 T-62 10/17/2016 11.25

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

Cue:/L) 28.6 126 T-62 5/9/2016 8.19 90.2

  1. N/A T-62 5/29/2009 8.90 78.7 165 T~62 2/16/2016 9.42 79 128 T-62 5/13/2013 9.52 34.. 3
  1. N/A T-62 5/26/2005 10.06 21.4 151 T-62 8/9/2016 10.50 143 238 T-62 7/30/2012 10.63 38.6
  1. N/A T-62 10/22/2010 10.95 63.8 157 T-62 4/19/2011 11.00 76.5 165 T-62 5/27/2014 11.10 73.8 156 T-62 3/27/2015 11.34 115
  1. N/A T-62 8/15/2011 11.50 29.6 138.8 T-76 11/5/2018 5.22 31.0 144.8 T-76 8/20/2018 9.35 41.7 162.0 T~76 5/7/2018 9.35 30.6 153.8 T-76 2/5/2018 9.42 26.5 153.8 T-76 11/8/2017 8.77 30.3 157.7 T-76 7/31/2017 8.55 20.8 153.7 T-76 5/2/2017 8.84 18.2 154.9 r~76 2/7/2017 9.57 21.2 147 T-76 10/17/2016 9.40
  1. N/A 204 T-76 8/14/2007 5.75 23.8 153 T-76 5/9/2016 6.78 52.5
  1. N/A T-76 5/29/2009 7.30, 28.2 171 T-76 5/13/2013 7.90 24.4 154 T-76 2/16/2016 7.92 24.8 144 T-76 8/9/2016 8.73 27 179 T-76 7/30/2012 8.88 36
  1. N/A T-76 10/18/2010 9.10

. 47.8 191 T-76 4/21/2011 9.20 28.4 159 T-76 5/27/2014 9.31 21.8 194 T-76 3/27/2015 9.52 41.7

  1. N/A T-76 8/15/2011 9.60 44.5 70.5 T-69 11/5/2018 6.81 40.3 72.6 T-69 8/20/2018 10.32 62.8 66.6 T-69 5/7/2018 10.36 55.1 69.2 T-69 2/5/2018 10.40 58.5 74.7 T-69 11/8/20i7 9.76 51.5 69.1 T-69 7/31/2017 9.65 39.8 88.3 T-69 4/18/2017 9.82 27.8 92.3 T-69 2/7/2017 10.61 30.6 87.9 T-69 10/17/2016 10.38 57.2 54.4 T-69 5/9/2016
  • 7.91 141
  1. N/A T-69 5/20/2009 8.02

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(ue:/L) 63 51.7 T-69 2/16/2016 8.98 36.8 39.7 T-69 5/17/2013 9.00 57.5 45.9 T-69 7/30/2012 9.44 46.1 68.6 T-69 8/9/2016 9.81 68.2.

  1. N/A T-69 10/21/2010 10.16 140 47.3 T-69 4/21/2011 10.20 31.4 80 T-69 3/27/2015 10.55 1.4 43.4 T-77 11/5/2018 5.30 0.8 69.0 T-77 8/20/2018 9.10 1.5 65.7 T-77 5/7/2018 9.30 2.1 61.7 T-77 2/5/2018 9.33 1.0 58.7 T-77 11/8/2017 8.70 1.5 55.5 T-77 7/31/2017 8.54 0.7 55.7 T-77 5/2/2017 8.65 0.8 77.3 T-77 2/7/2017 9.40 1.07 82 T-77 10/17/2016 9.18 2.29 62.6 T-77 5/9/2016 6.84 9.11
  1. N/A T-77 5/29/2009 7.20 3.56 91.2 T-77 5/13/2013 7.87 1.45 55.1 T-77 2/16/2016 7.96 1.39 78.5 T-77 8/9/2016 8.77 4.45 95.8 T-77 7/31/2012 8.86 10.6
  1. N/A T-77 10/22/2010 8.97 5.5 85.3 T-77 4/21/2011 9.10 2.05 92.8 T-77 5/27/2014 9.21 4.97
  1. N/A T-77 8/15/2011 9.50 0.513 89.8 T-77 3/27/2015 9.84 0.2 35.3 T-79 11/5/2018 5.15 0.2 32.9 T-79 8/20/2018 8.51 0.3 45.3 T-79 5/7/2018 8.88 0.2 40.6 T-79 2/5/2018 8.92 0.1 40.1 T-79 11/8/2017 8.28 0.193 43.4 T-79 7/31/2017 8.19 0.2 43.9 T-79 5/2/2017 8.10 0.2 42.2 T-79 2/7/2017 8.90 0.413 50 T-79 10/17/2017 8.63
  1. N/A 120 T-79 8/14/2007 5.82 0.427 60.3 T-79 5/9/2016 6.56 7.38
  1. N/A T-79 5/29/2009 6.90 0.515 62.4 T-79 5/13/2013 7.48 0.292 53 T-79 2/16/2016 7.63 1

77 T-79 7/30/2012 8.45 4.76

  1. N/A T-79 10/25/2010 8.54 3.56 69.5 T-79 4/21/2011 8.70

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(ur.?/Ll 0.744 67.2 T-79 5/27/2014 8.80 0.0779 40.6 T-79 3/27/2015 8.84 2.89

  1. N/A T-79 8/15/2011 9.00 0.577 52.1 T-79 8/9/2016 9.31 90.5
  1. N/A T-57 11/5/2018 4.49 93.0
  1. N/A T-57 8/20/2018 9.71 136.0
  1. N/A T-57 5/7/2018 9.38 127.0
  1. N/A T-57 2/5/2018 9.41 71.5
    1. N/A T-57 11/6/2017 8.68 120.0
  1. N/A T-57 7/31/2017 9.00 125.0 14.5 T-57 4/17/2017 8.96 124.0
  1. N/A T-57 2/7/2017 9.75 87.4
  1. N/A T-57 10/17/2016 9.72 116
  1. N/A T-57 5/9/2016 6.84 206
  1. N/A T-57 5/20/2009 7.10 58.1
  1. N/A T-57 2/16/2016 7.85
  1. N/A 10.9 T-57 5/17/2013 8.00 67.0 4.89 T-57 8/9/2016 9.12 87.5 12.7 T-57 7/30/2012 9.18 96.9 10.7
  • T-57 4/21/2011 9.30 92.2
  1. N/A T-57 10/25/2010 9.42 107 12 T-57 3/26/2015 9.66 55.1
  1. N/A T-58 11/5/2018 5.45 48.0
  1. N/A T-58 8/20/2018 10.17 47.5
  1. N/A T-58 5/7/2018 9.91 35.2
  1. N/A T-58 2/5/2018 10.04 36.1
  1. N/A T-58 11/8/2017 9.33 47.6
  1. N/A T-58 7/31/2017 9.33 30.6 16.7 T-58 4/17/2017 8.96 35.3
  1. N/A T-58 2/7/2017 9.75 23.1
  1. N/A T-58 10/17/2016 9.72 61
  1. N/A T-58 5/9/2016 7.38 51.5
  1. N/A T-58 5/21/2009 7.60 34.1
  1. N/A T-58 2/16/2016 8.45 31.3 15.5 T-58 5/17/2013 8.56 39
  1. N/A T-58 8/9/2016 9.54 14
  1. N/A T-58 10/25/2010 9.88 13.6 20.4 T~58 4/21/2011 9.90 54.5 17.2 T-58 3/26/2015 10.17 16.2
  1. N/A T-86 11/5/2018 4.64 33.5
  1. N/A T-86 8/20/2018 9.96 19.4
  1. N/A T-86 5/7/2018 9.76 27.7
  1. N/A T-86 2/5/2018 9.85 27.2
  1. N/A T-86 11/8/2017 9.03

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water) lui:r/L) 22.1

  1. N/A T-86 7/31/2017 9.44 42.3 21.9 T-86
  • 4/17/2017 9.22 38.0
  1. N/A T-86 2/7/2017 10.15 36.8
  1. N/A T-86 10/17/2016 10.01 24.6 14.7 T-86 5/9/2016 7.41 16.9
  1. N/A T-86 2/16/2016 8.39 41.4 21.8 T-86 5/24/2013 8.71 30.1 16;8 T-86 8/9/2016 9.60 41.1 16.5 T-86 4/20/2011 9.70 58 25.4 T-86 3/26/2015 10.05 40.3 30.3 T-96 11/5/2018 6.87 28.4 31.1 T-96 8/20/2018 10.10 33.8 36.1 T-96 5/7/2018 10.55 46.2 36.9 T-96 2/5/2018 10.55 50.5 36.4 T-96 11/8/2017 9.97 29.9
  • 35.1 T-96 7/31/2017 10.05 31.3 34.4 T-96 4/18/2017 9.65 30.8 36.1 T-96

. 2/7/2017 10.49 33 34.6 T-96 10/17/2016 10.28 31.8 33.2 T-96 5/9/2016 8.40 17.8 31.5 T-96 2/16/2016 9.37 27.4 34.8 T-96 5/24/2013 9.41 29.6 30 T-96 8/9/2016 10.13 17.3

  • 32.7 T-96 3/26/2015 10.50 7.5 66.0 T-97 11/5/2018 10.48 5.1 69.0 T-97 8/20/2018 12.02 9.5 72.2 T-97 5/7/2018 12.98 13.5 65.2 T-97 2/5/2018 12.88 14.0 64.4 T-97 11/8/2017 12.55 13.9 59.4 T-97 7/31/2017 12.80 6.4 67.8 T-97 4/19/2017 11.84 11.1 65.3 T-97 2/7/2017 12.74 9.23 63.4 T-97 10/17/2016 12.54 9.7 59.8 T-97 5/9/2016 11.17 4.28 57.7 T-97 2/16/2016 12.00 0.179 62.1 T-97 3/26/2015 12.77 13.8 59 T-97 8/9/2016 12.81 0.321 56.4 T-97 12/18/2014 12.89 188.0
  1. N/A
  • T-54 11/5/2018 4.51 151.0
  1. N/A T-54 8/20/2018 10.70 168.0
  1. N/A T-54 5/7/2018 10.20 147.0
  1. N/A T-54 2/5/2018 10.24 113.0
  1. N/A T-54 11/8/2017 9.44 217.0
  1. N/A T-54 7/31/20i7 10.05

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(ue:/L}

116.0 2.2 T-54 4/18/2017 9.84 107.0

  1. N/A T-54 2/7/2017 10.65 95.8
  1. N/A T-54 10/17/2016 10.71 431
  1. N/A T-54 5/9/2016 7.72 317
  1. N/A T-54 5/20/2009 8.00 195
  1. N/A T-54 2/18/2016 8.70 268 4.07 T-54 5/28/2013 9.18 145 3.2 T-54 4/21/2011 10.20 121
  1. N/A T-54 8/9/2016 10.24
  • 122
  1. N/A T-54 10/25/2010 10.43 170 3.00 T-54 8/3/2012 10.45 147 3.28 T-54 3/26/2015 10.60 70.8 71.6 T-59 11/5/2018 4.72 77.0 81.0 T-59 8/20/2018 9.00 75.0 82.3 T-59 5/7/2018 9.05 88.4 83.0 T-59 2/5/2018 9.04 60.8 76.5 T-59 11/8/2017 8.30 65.8 70.5 T-59 7/31/2017 8.70 83.0 87.6 T-59 4/18/2017 8.39 89.5 96.4 T-59 2/7/2017 9.17 9d 96.4 T-59 10/17/2016 9.11 101 83.4 T-59 5/9/2016 6.75 139
  1. N/A T-59 5/20/2009 6.90 103 76.4 T-59 2/16/2016 7.72 95.9 85.6 T-59 5/24/2013 8.08 79 78.5 T-59 8/9/2016 8.86 150 101 T-59 4/20/2011 9.00 109 189 T-59 8/3n.012 9.01 123
  1. N/A T-59 10/21/2010 9.03 108 79.9 T-59 3/26/2015 9.25 20.2
  1. N/A T-91 11/5/2018 7.74 18.3
  1. N/A T-91 8/20/2018 8.96 20.b
  1. N/A T-91 5/7/2018 9.64 23.4
  1. N/A T-91 2/5/2018 9.59 19.2
  1. N/A T-91 11/8/2017 9.11 13.6
  1. N/A T-91 7/31/2017 9.48 26.6 26.9 T-91 4/19/2017 8.61 24.2
  1. N/A T-91 2/7/2017 9.42 22.1
  1. N/A T-91 10/17/2016 9.29 12.8
  1. N/A T-91 5/9/2016 7.77 20.1
  1. N/A T-91 2/16/2016 8.58 30.9 28 T-91 5/24/2013 8.74 10.5
  1. N/A T-91 8/9/2016 9.48 38.9 24.5 T-91 3/26/2015 9.55

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(ue:/L) 36 22.1 T-91 12/16/2014 9.73 37.3 34.6 T-99 11/5/2018 11.28 18.9 25.7 T-99 8/20/2018 11.71 37.2 34.5 T-99 5/7/2018 12.97 46.2 33.7 T-99

\\

2/5/2018 12.96 40.8 32.8 T-99 11/8/2017 12.80 34.3 32.3 T-99 7/31/2017 13.00 18.1 35.8 T-99 4/19/2017 11.85 30.8 35.1 T-99 2/7/2017 12.60 31.4 35.1 T-99 10/17/2016 12.55 46.6 35.1 T-99 5/9/2016 11.65 36.8 36.8 T-99 2/18/2016 12.15 24.1 46.6 T-99 3/26/2015 12.85 22.3 48.1 T-99 12/16/2014 12;93 38.4 33.2 T-99 8/9/2016 13.00 54.9 9.7 T-88

. 11/5/2018 4.10 51.5 10.8 T-88 8/20/2018 10.29 37.3 10.8 T-88 5/7/2018 9.62 51.2 10.4 T-88 2/5/2018 9.78 41.7 10.8 T-88 11/8/2017 8.67 50.S 10.8 T-88 7/31/2017 9.75 46.1 9.7 T-88 4/18/2017 9.40 48.8 10.0 T-88 2/7/2017 10.27 43.1 9.78 T-88 10/17/2016 10.32 49.S 7.68 T-88 5/9/2016 6.90 25.S 8.27 T-88 2/16/2016 8.02 68.1 10 T-88 5/24/2013 8.75 52 10.1 T-88 4/20/2011 9.82 52.1 7.89 T-88 8/9/2016 9.90 74.5 9.48 T-88 8/3/2012 10.21 130 10.2 T-88 3/26/2015 10.25 12.8 21.4 T-61 11/5/2018 4.04 13.S 22.7 T-61 8/20/2018 9.30 13.3 25.9 T-61 5/7/2018 8.66 19.2 25.4 T-61 2/5/2018 8.95 14.9 26.4 T-61 11/8/2017 7.59 11.4 24.0 T-61 7/31/2017 8.90 14.1 32.1 T-61 4/18/2017 8.51 12.8 31.9 T-61 2/7/2017 9.30 18.6 26 T-61 10/17/2016 9.40 25 20 T-61 5/9/2016 5.65 6.38

  1. N/A T-61 5/20/2009 6.80 37 25.6 T-61 2/16/2016 6.96 28.8 32.2 T-61 5/24/2013 7.86

Nitrate/

Uranium Water Level Nitrite

{µg/L)

Monitor Well

. Measurement Date (Depth to Water) fuE?:/L) 16.2 22.8 T-61 8/9/2016 8.95 56.8 35 T-61 3/26/2015 9.39 2.18 31.7 T-61 4/20/2011 9.40 43.1 26.7 T-61 12/17/2014 9.69 3.35

  1. N/A T-61 10/25/2010 9.70 21.3
  1. N/A T-100 11/5/2018 11.08

,20.7

  1. N/A T-100 8/20/2018 11.28 16.0
  1. N/A T-100 5/7/2018 12.59 20.6
  1. N/A T-100 2/5/2018 12.50 18.7
  1. N/A T-100 11/8/2017 12.34 25.4
  1. N/A T-100 7/31/2017 12.70 22.5 24.8 T-100 4/19/2017 11.60 27.3
  1. N/A T-100 2/7/2017 12.26.

21.9

  1. N/A T-100 10/17/2016 12.29 25.4
  1. N/A T-100 5/9/2016 11.45 32.3
  1. N/A T-100 2/18/2016 11.95 51.6 31.6 T-100 3/26/2015 12.42 49.3 30.8 T-100 12/16/2014 12.55 14.6
  1. N/A T-100 8/9/2016 12.68
  1. N/A
  1. N/A TMW-13 11/5/2018 7.82 0.200 223.740 TMW-13 8/20/2018
  • 12.02 0.050 226.910 TMW-13 5/7/2018 11.11
  1. N/A
  1. N/A TMW-13 2/5/2018 11.61
  1. N/A
  1. N/A TMW-13 11/9/2017 11.16
  1. N/A
  1. N/A TMW-13 7/31/2017 12.49
  1. N/A
  1. N/A TMW-13 5/2/2017 10.30
  1. N/A
  1. N/A TMW-13 2/8/2017 12.12
  1. N/A
  1. ~/A TMW-13 10/14/2016 12.45
  1. N/A
  1. N/A TMW-13 8/8/2016
  • 12.07 0.0302 4,510 TMW-13

.5/6/2016 7.78

  1. N/A
  1. N/A TMW-13 2/15/2016 9.54
  1. N/A 2006.1 02W01 11/5/2018 9.08
  1. N/A 1884.9.

02W01 8/20/2018 12.12 26.8 2066.8 02W01 5/7/2018 10.32

  1. N/A 2177.8 02W01 2/5/2018 10.37
  1. N/A 2055.3 02W01 11/9/2017 10.90
  1. N/A 1983.7 02W01 7/31/2017 11.66
  1. N/A 1974.0 02W01 4/24/2017 9.00
  1. N/A 2309.0 02wo1*

2/8/2017 10.13

  1. N/A 1380 02W01 10/18/2016 12.07
  1. N/A 1550 02W01 5/10/2016 7.00
  1. N/A 2370 02W01 2/17/2016 8.02 0.353 2720 02W01 5/23/2013 8.44
  1. N/A 2670 02W01 3/25/2015 10.25

/,

Nitrate/

Nitrite (ue-/L}

  1. N/A
  1. N/A
  1. N/A

('

0.9 5.8

  1. N/A
  1. N/A
  1. N/A
  1. N/A
  1. N/A
  1. N/A
  1. N/A
  1. N/A 0.173
  1. N/A
  1. N/A
  1. N/A 0.1
  1. N/A
  1. N/A
  1. N/A
  1. N/A 0.1
  1. N/A
  1. N/A 0.0597 0.0663 0.05
  1. N/A
  1. N/A
  1. N/A 0.0192 0.25
  1. N/A 0.18
  1. N/A
  1. N/A
  1. N/A 0.05 1.28
  1. N/A
  1. N/A 0.207 0.02 Uranium

(µg/L) 1630 3160 222.9 232.0 434.8 233.9 308.8 391.8 382.7 344.3 421 429 600 851 537 469 2185.0 2427.0 3286.0 2587.8 2527.1 2707.9 2597.0 2577.5 2620

  1. N/A 2790
  1. N/A 4560 8180 2620 2880
  1. N/A 8490
  1. N/A 7762 719 3950 2830 2410 9370 2420
  1. N/A 6740 Monitor Well Measurement Date Water Level (Depth to Water) 02W01 8/11/2016 10.73 02W01 9/27/2006 11.49 02W39 11/5/2018 14.21 02W39 8/20/2018 16.45 02W39 5/7/2018 14.81 02W39 2/5/2018 15.13 02W39 11/8/2017 15.11 02W39 7/31/2017 16.00 02W39 4/25/2017 13.55 02W39 2/8/2017 14.37 02W39 10/28/2016 16.18 02W39 5/10/2016 11.76 02W39 2/17/2016 12.60 02W39 5/28/2013 12.87 02W39 3/25/2015 14.31 02W39 8/11/2016 14.85 TMW-09 11/5/2018 10.77 TMW-09 8/20/2018 13.60 TMW-09 5/7/2018 11.72 TMW-09 2/5/2018 11.87 TMW-09 11/9/2017 12.40 TMW-09 7/31/2017 13.05 TMW-09 5/2/2017 10.31 TMW-09 2/8/2017 11.39 TMW-09 10/18/2016 13.49 TMW-09 5/2/2017 10.31 TMW-09 5/10/2016 8.42 TMW-09 4/3/2007 8.54 TMW-09 8/17/2007 9.20 TMW-09 3/29/2001 9.22 TMW-09 2/17/2016 9.35 TMW-09 5/14/2013 9.36 TMW-09 5/28/2009 9.60 TMW-09 2/22/2001 10.12 TMW-09 3/15/2004 10.49 TMW-09 6/27/2000 10.75 TMW-09 1/7/2000 11.24 TMW-09 1/23/2001 11.38 TMW-09 3/25/2015 11.46 TMW-09 5/27/2014 11.80 TMW-09 7/2/2001 11.94 TMW-09 8/11/2016 12.02 TMW-09 10/18/2010 12.35 TMW-09 12/4/2001 12.60

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

Cue:/L) 0.05 3760 TMW-09 7/30/2012 12.66

  1. N/A 6385 TMW-09 12/5/2000 12.85 0.5
  1. N/A TMW-09 8/16/2011 14.50 35.8 304.6 MWWA-03 11/5/2018 13.82 36.5 568.4 MWWA-03 8/20/2018
  • 16.45 8.3 696.8 MWWA-03 5/7/2018 13.50 44.6 537.9 MWWA-03 2/5/2018 14.83 30.5 168.0 MWWA-03 11/8/2017 15.45 0.1 158.0 MWWA-03 5/3/2017 16.39 0.126 500 MWWA-03 2/16/2016 9.56 0.05 152 MWWA-03 5/10/2016 9.59 9.67 586 MWWA-03 5/14/2013 10.38 17
  1. N/A MWWA-03 5/29/2009 11.90 25.7 47.9 MWWA-03 4/19/2011 15.00 43.3 323 MWWA-03 5/28/2014 15.59 84.6 666 MWWA-03 8/10/2016 15.63 39.5 401 MWWA-03 8/3/2012 16.00 23 417 MWWA-03 4/2/2015 16.05 30.4

. #N/A MWWA-03 10/26/2010 16.15 30.1 117.0 MWWA-09 11/5/2018 12.80 29.9 123.1 MWWA-09 8/20/2018 14.60 19.5 129.2 MWWA-09 5/7/2018 8.33 36.3 151.6 MWWA-09 2/5/2018 8.27 20.2 537.4 MWWA-09 11/8/2017 13.01 23.8 143.2 MWWA-09 7/31/2017 13.55 12.3 116.0 MWWA-09 5/3/2017 6.62 21.7 143.0 MWWA-09

. 2/8/2017 13.04 35.2 130 MWWA 10/18/2016 14.60 30 156 MWWA-09 2/16/2016 4.43 15.5 128 MWWA-09 5/11/2016 5.21 33.5

  1. N/A MWWA-09 5/29/2009 5.70 53.5 145 MWWA-09 5/14/2013 5.75
  1. N/A 350 MWWA-09 8/15/2007 6.64 47.8 116 MWWA-09 4/19/2011 9.00 36.3 102 MWWA-09 5/27/2014 12.20 29.6 143 MWWA-09 8/11/2016 13.26 14.3
  1. N/A MWWA-09 10/26/2010 13.35 46.4 114 MWWA-09 4/2/2015 13.88 56 140 MWWA-09 8/3/2012 13.92 44
  1. N/A MWWA-09 8/16/2011 14.60 9.45
  1. N/A 1331 6/19/2008 7.04 8.48
  1. N/A 1331 8/15/2007 9.43
  1. N/A 29.2 1331 5/11/2016 10.41 12.5
  1. N/A 1331 6/25/2003 11.20

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water) lue:/Ll 6.65

  1. N/A 1331 5/26/2005 11.23
  1. N/A 138.76 1331 3/28/2000 11.27
  1. N/A 22.1 1331 2/18/2016 11.30
  1. N/A 19.7 1331 8/9/2016 11.31
  1. N/A 178.71 1331 6/28/2000 11.43
  1. N/A 144.35 1331 9/6/2016 11.92
  1. N/A 150.23 1331 12/4/2000 12.34 19.8
  1. N/A 1331 6/27/2002 12.48 7.56 36.4 1331 3/12/2014 12.96 10.1 36.7 1331 5/5/2014 13.15 10.9
  1. N/A 1331 5/23/2006 13.68 9.08

. 36.8 1331 12/19/2014 14.18

'#N/A 33.6 1331 4/1/2015 14.44 473.0

  1. N/A 1312 11/5/2018 27.79 417.0 13.6 1312 8/20/2018 27.20

.466.0

  1. N/A 1312 5/7/2018 26.03 555.0
  1. N/A 1312 2/5/2018 27.35 316.0
  1. N/A 1312 11/7/2017 27.65 395.0
  1. N/A 1312 7/31/2017 27.22 354.0 20.2 1312 5/1/2017 30.40 358;0
  1. N/A 1312 2/8/2017 29.94 334
  1. N/A 1312 10/19/2016.

29.54 408

  1. N/A 1312 6/24/2008 23.31 643
  1. N/A 1312 8/16/2007 25.65 415
  1. N/A 1312 5/18/2009 26.05 299
  1. N/A 1312 10/26/2010 26.20 465
  1. N/A 1312 8/10/2016 26.58
  1. N/A 35.84 1312 6/28/2000
  • 26.73 298
  1. N/A 1312 6/27/2001 26.93
  1. N/A 27.903 1312 3/28/2000 27.10 493
  1. N/A 1312 5/24/2005 27.14 344
  1. N/A 1312 5/11/2016 27.18 287 17.3 1312 4/15/2011 27.20 375 22.3 1312 7/31/2012 27.20
  1. N/A 31.87 1312 9/5/2000 27.24 361
  1. N/A 1312 2/18/2016 27.35 400
  1. N/A 1312 3/27/2001 27.55
  1. N/A 31.31 1312 12/4/2000 27.63
  1. N/A 45.5 1312 2/8/2006 27.99 412 43.9 1312 5/23/2006 28.13 309 17.7 1312 5/23/2013 28.15 289
  1. N/A 1312 6/26/2002 28.47 336
  1. N/A 1312 4/2/2015 29.37 555
  1. N/A 1312 6/24/2003 29.73

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water) lue:/L) 244.0

  1. N/A 1313 11/5/2018 30.19 110.0 22.5 1313 8/20/2018 29.70 82.5
  1. N/A 1313 5/7/2018

. 28.67 152.0

  1. N/A 1313

. 2/5/2018 29.98 118.0

  1. N/A 1313 11/7/2017 30.20 133.0
  1. N/A 1313 7/31/2017 29.85 118.0 18.2 1313 5/1/2017 30.40 101.0
  1. N/A 1313 2/8/2017 29.94 122
  1. N/A 1313 10/19/2016 29.54 135
  1. N/A 1313 6/24/2008 26.30 340
  1. N/A 1313 5/19/2009 28.71

. 184

  1. N/A 1313 8/16/2007 28.77 423
  1. N/A 1313 10/19/2010 28.82 107
  1. N/A 1313*

8/10/2016 29.20

  1. N/A 28.5 1313 6/28/2000 29.47 124
  1. N/A 1313 6/27/2001 29.52
  1. N/A 22.5 1313 3/28/2000 29.64 464 18.8 1313 4/18/2011 29.70
  1. N/A 36.8 1313 9/5/2000 29.80 109
  1. N/A 1313 5/11/2016 29.81 285 13.7 1313 7/31/2012 29.86 119
  1. N/A 1313 2/17/2016 30.00 155
  1. N/A 1313 3/27/2001 30.13
  1. N/A 23.6

.1313 12/4/2000 30.19 118

  1. N/A 1313 5/24/2006
  • 30.61 179 10.5 1313 5/23/2013 30.78 114
  1. N/A 1313 6/26/2002 30.89 125
  1. N/A 1313 4/2/2015 31.53 120
  1. N/A 1313 6/23/2003 31.73 7.4 63.5 1348 11/5/2018 23.36 70.7 72.7 1348 8/20/2018 24.54 6.8 74.9 1348 5/7/2018 22.21 7.1 77.9 1348 2/5/2018 22.03 7.5 71.1 1348 11/7/2017 23.16 6.8 68.9 1348 7/31/2017 21.86 8.4 73.5 1348 5/1/2017 22.38 8.0 71.1 1348 2/8/2017 23.45 6.85 70.9 1348 10/19/2016 23.82 9.98
  1. N/A 1348

. 5/18/2009 20.64 8.37 67.5 1348 5/12/2016 20.67 11.3 67 1348 2/18/2016 21.18 16.5 70.2 1348 5/20/2013 21.90 19

  1. N/A 1348 6/25/2003 22.37 7.69 66 1348 8/10/2016 22.52

(

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(ue:/L) 10.9 64.6 1348 3/13/2014 22.85 10 70.1 1348 4/19/2011 23.00 7.83

  1. N/A 1348 10/26/2010 23.21 12.6 73 1348 8/6/2012 24.00 10.1 72.2 1348 4/2/2015

-25.24 6.9 201.1 1356 11/5/2018 16.20 0.1 199.1 1356 8/20/2018 16.55 7.2 481.4 1356 5/7/2018 16.00 6.0 589.7 1356 2/5/2018 15.76 7.3 657.0 1356 11/7/2017 15.88 8.0 622.0 1356 7/31/2017 16.08 6.5 1260.2 1356 5/3/2017 16.25 16.9 393.4 1356 2/8/2017 16.12 16.3 255 1356 10/19/2016 15.84

  1. N/A 1100 1356

. 8/14/2007 14.20 7.06 622 1356 5/11/2016-14.68 9.98

  1. N/A 1356 6/1/2009 15.30 9.89 258 1356 2/18/2016 15.45 14.3 281 1356 8/10/2016 15.48 11.9
  1. N/A 1356 10/26/2010 15.52 15.5 260 1356 5/15/2013 15.83 9.8 531 1356 4/18/2011 16.10 18.8 202 1356 8/2/2012 16.10 7.98 171 1356 5/28/2014 16.47 7.15
  1. N/A 1356 8/16/2011 16.60 13.5 108 1356 3/31/2015 17.11 30.1 39.1 1352 11/5/2018 18.58 66.3 73.8 1352 8/20/2018 18.66 38.7 117.1 1352 5/7/2018 18.05 40.8 66.2 1352 2/5/2018 18.08 32.5 59.9 1352 11/7/2017 18.11 43.5 116.1 1352 7/31/2017 17.90 28.5 75.6 1352 5/3/2017 18.55 40.7 54.5 1352 2/8/2017 18.00 47.8 95.1 1352 10/19/2016 17.55
  1. N/A 1180 1352 8/14/2007 15.23 64.1
  1. N/A 1352 10/25/2010 16.91 53.3 135 1352 8/10/2016 17.03 42.6 136 1352 5/11/2016 17.08 181
  1. N/A 1352 6/1/2009 17.20 59 149 1352 2/18/2016 17.65 52 130 1352 7/31/2012 17.84 57 132 1352 4/18/2011 18.00 58.5 75.8 1352 5/15/2013 18.33

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(u~ L) 61.5

  1. N/A 1352 8/16/2011 18.80 43.5
  1. N/A 1352 6/24/2003 18.83 47.8 41 1352 3/31/2015 19.73 792.0 60.7 1381 11/5/2018 23.80 560.0 54.6 1381 8/20/2018 24.16 650.0 81.5 1381 5/7/2018 24.11 925.0 88.7 1381 2/5/2018 23.97 821.0 71.2 1381 11/7/2017 23.70 803.0 80.6 1381 4/27/2017 24.45 881.0 63.5 1381 2/8/2017 24.18 863 89.9 1381 10/18/2016 23A9 750 61.6 1381 5/11/2016 22.13 765 92.5 1381 8/10/2016 22.75 685
  1. N/A 1381 2/17/2016 22.92 858
  1. N/A 1381 12/19/2014 25.45 722
  1. N/A 1381 3/30/2015 25.70 888.0
  1. N/A 1385 11/5/2018 28.77 6860.0 16.7 1385 8/20/2018 28.90 937.0
  1. N/A 1385 5/7/2018 28.60 644.0
  1. N/A 1385 2/5/2018 27.45 750.0
  1. N/A 1385 11/7/2017

, 28.35 247.0

  1. N/A 1385 7/31/2017 27.44 805.0 18.237 1385 4/26/2017 28.98 902.0
  1. N/A 1385 2/8/2017 28.18 540
  1. N/A 1385 10/18/2016 27.42 768
  1. N/A 1385

.8/10/2016 26.63 1200

  1. N/A 1385 5/11/2016 27.51 954
  1. N/A 1385 2/17/2016 27.80 1010

. 18.3 1385 12/18/2014 29.92 833 20.4 1385 3/30/2015 30.34 158.0

  1. N/A 1387 11/5/2018 15.07 42.5 20.4 1387 8/20/2018 15.94 27.4
  1. N/A 1387 5/7/2018 15.50 29.4
  1. N/A 1387 2/5/2018 15.40 13.2
  1. N/A 1387 11/7/2017 14.89 22.0
  1. N/A 1387 7/31/2017 14.95 71.9 20.5 1387 4/26/2017 15.50 15.9
  1. N/A 1387 2/8/2017 15.73 24.5
  1. N/A 1387 10/18/2017 15.13 61
  1. N/A 1387 5/11/2016 13.51 56.3
  1. N/A 1387 2/17/2016 14.40 47
  1. N/A 1387 8/10/2016 14.41 60.4 23.7 1387 3/30/2015 17.28 41.3 16.9 1387 12/19/2014 17.98

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water)

(ue:/L) 214.0 30.6 1393 11/5/2018 31.05 200.0 27.5 1393 8/20/2018 31 97.0 18.8 1393 5/7/2018 30.35 99.0 19.9 1393 2/5/2018 29.6 95.8 22.2 1393 11/7/2017 31.00 106.0 16.7 1393

- 7/31/2017 29.30 102.0 19.2 1393 4/27/2017 31.00 53.0 14.1 1393 2/8/2017 30.18 58 11.1 1393 10/18/2017 29.40 54.6 10.6 1393 8/10/2016 28.76 32.5 12 1393 5/10/2016 29.35 44.3 13.5 1393 2/17/2016 29.70 376 29.1 1393 12/18/2014 31.77 505 35 1393 3/30/2015 32.18 57.0

  1. N/A 13198-3 11/5/2018 62.46 54.4
  1. N/A

' 13198-3 8/20/2018 64.41 56.0

  1. N/A 13198-3 5/7/2018 62.68 64.0
  1. N/A 13198-3 2/5/2018 64.61 55.5
  1. N/A 13198-3 11/7/2017 63.91 58.0

. #N/A 13198-3 7/31/2017 63.91 52.5 24.8 13198-3 4/28/2017 63.42 64.4

  1. N/A 13198-3 2/8/2017 64.00 61.9
  1. N/A 13198-3 10/19/2017 64.62 89.3
  1. N/A 13198-3 5/27/2009 61.40 27.8
  1. N/A 13198-3 4/24/2003 61.49 61
  1. N/A 13198-3 2/18/2016 61.98 66.4
  1. N/A 13198-3 5/12/2016 61.98 90.1 31 13198-3 5/16/2013
  • 62.48 31.5
  1. N/A 13198-3 7/7/2003 62.72 81.2 26.5 13198-3 3/10/2014 62.81 75.5 24.8 13198-3 4/15/2011 63.40 61
  1. N/A 13198-3 8/10/2016 63.40 82.4 25.8 13198-3 8/1/2012 63.90 69 26.9 13198-3 4/1/2015 64.69 30.0
  1. N/A 13198-1 11/5/2018 61.03 21.9
  1. N/A 13198-1 8/20/2018 63.02 37.3
  1. N/A 13198-1 5/7/2018 61.24 45.0
  1. N/A 13198-1 2/5/2018.

61.40 14.7

  1. N/A 13198-1 11/7/2017 62.46 38.5
  1. N/A 13198-1 7/31/2017 62.80 22.4 16.9 13198-1 4/28/2017 61.94 31.0
  1. N/A 13198-1 2/8/2017 62.57 39.6
  1. N/A 13198-1 10/19/2017 63.21 17.6
  1. N/A 13198-1 6/24/2008 58.18

Nitrate/

Uranium Water Level Nitrite

(µg/L)

Monitor Well Measurement Date (Depth to Water) lue:/L) 2.91

  1. N/A 1319B-1 8/14/2007 58.95 47.4
  1. N/A 1319B-1 5/28/2009 60.10 143
  1. N/A 1319B-1 4/24/2003 60.17
  1. N/A 53.1 1319B-1 3/27/2003 60.19 52
  1. N/A 1319B-1 5/12/2016 60.27 46.3
  1. N/A 1319B-1 2/18/2016 60.42 15:4
  1. N/A 1319B-1 6/1/2005 60.43 58 29.4 1319B-1 5/16/2013 60.96 142
  1. N/A 1319B-1 6/25/2003 61.07 54 30.9 1319B-1 3/10/2014 61.41 21.4
  1. N/A 1319B-1 12/13/2005 61.69 19.6
  1. N/A 1319B-1 9/20/2005 61.90 85.5 42.8 1319B-1 4/15/2011 61.90 47.1
  1. N/A 1319B-1 8/10/2016 62.03
  1. N/A 83.6 1319B-1 2/8/2006 62.22

. 19.5 58.8 1319B-1 5/23/2006 62.45 38,6 25 1319B-1 4/1/2015 63.06

  1. N/A 234.6 02W40 11/5/2018 14.00
  1. N/A 200.1 02W40 8/20/2018 15.26
  1. N/A 154.3 02W40 5/7/2018 14.05 2.3 160.4 02W40 2/5/2018 14.36
  1. N/A 486.4 02W40 11/8/2017 15.41
  1. N/A 752.1 02W40 7/31/2017 15.83
  1. N/A 1012.4 02W40 4/25/2017 14.90
  1. N/A

~41.6 02W40 2/8/2017 15.36

  1. N/A 865.

02W40 10/18/2016 15.88

  1. N/A 993 02W40 5/10/2016 13.30
  1. N/A 1120 02W40 2/17/2016 14.00 0.223 1430 02W40 5/21/2013 14.30
  1. N/A 784 02W40 8/10/2016 15.25
  1. N/A 959 02W40 3/25/2015 15.43
  1. N/A 632.8 1315R 11/5/2018 13.82
  1. N/A 816.8 1315R 8/20/2018 16.57
  1. N/A 900.5 1315R 5/7/2018 14.70 10.5 948.0 1315R 2/5/2018 14.89
  1. N/A 915.3 1315R 11/9/2017 15.03
  1. N/A 1011.4 1315R 7/31/2017 15.44
  1. N/A 723.1 1315R 4/25/2017 13
  1. N/A 523.1 1315R 2/8/2017 14.03
  1. N/A 746 1315R 10/18/2016 15.93 0.25
  1. N/A 1315R 6/25/2008 10.16
  1. N/A 697 1315R 5/10/2016 10.28
  1. N/A 1190 1315R 2/17/2016 11.50 0.037 1950 1315R 8/16/2007 11.60

I I

Nitrate/

Uranium Nitrite

(µg/L)

Monitor Well fui;i:/L) 9.82 1510 0.0306

  1. N/A 0.64
  1. N/A 0.116 1059 0.93
  1. N/A
  1. N/A 1010
  1. N/A 651 0.442
  1. N/A 390.0
  1. N/A 383.0
  1. N/A 278.0
  1. N/A 451.0
  1. N/A 291.0
  1. N/A 303.0
  1. N/A 268.0
  1. N/A
  • 373.0
  1. N/A 396
  1. N/A 332
  1. N/A 417
  1. N/A 499 0.498 376 1.44 361 3.09 157 2.19

. 429

  1. N/A 520
  1. N/A 390 6.99 314 3.38 Notes Depth to water taken from top of casing.

"#N/A" - Not available

µg/L - Micrograms per liter 1315R 1315R 1315R 1315R 1315R 1315R 1315R 1315R 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 1346 Water Level Measurement Date (Depth to Water) 5/23/2013 11.91 5/31/2005 12.52 3/15/2004 13.07 5/23/2006 13.68 6/24/2003 13.77 3/25/2015 14.05 8/10/2016 14.43 10/26/2010 14.82 11/5/2018 52.20 8/20/2018 53.81 5/7/2018 53.10 2/5/2018 52.92, 11/7/2017 53.50 7/31/2017 53.22 4/27/2017 53.68 2/8/2017 53.50 10/18/2017 53.73 5/10/2016 52.29 2/17/2016 52.72 3/14/2014 52.79 4/15/2011 52.80 5/28/2013 53.06 7/31/2012 53.11 8/10/2016 53.12 10/27/2010 53.15 12/18/2014

'54.13 3/30/2015 54.24

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