W912DR18R0055_-_Attachment_C_-_Draft_2017_OU6_OU7_GW_Report_Tables.pdf

Table 2-1 OU6 Monitoring Well Construction Details Groundwater Elevation Data

2017 Annual OU6 and OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Location ID Aquifer Elevation (ft) Total Depth

(ft) Screen Interval

(ft)

Well Diameter

(in)

Depth to Water (ft)

Water Level Elevations (ft)

Groundwater Elevation

Measurement Date

AEHA-14A Upper 111.57 --- 7.5 - 17.5 2 6.27 --- 3/29/2017 AEHA-15A Upper 113.87 20.32 11 - 21 2 8.37 105.50 3/29/2017 AEHA-16A Upper 117.67 --- 7.2-24.2 2 6.40 111.27 3/29/2017 AEHA-18A Upper 109.77 12.56 3.5 - 13.5 2 9.37 100.40 3/29/2017 AEHA-2 Upper 115.74 15.30 9.3-19.3 2 10.06 105.68 3/29/2017 AEHA-22A Upper 112.77 --- 9 - 19 2 4.49 108.28 3/29/2017 AEHA-25A Upper 110.61 --- 8.1 - 18.1 2 7.56 103.05 3/29/2017 AEHA-26A Upper 107.46 11.55 5 - 15 2 4.45 103.01 3/29/2017 AEHA-28A Upper 111.29 --- 9 - 19 2 --- --- 3/29/2017 AEHA-29A Upper 110.52 --- 9 - 19 2 --- --- 3/29/2017 AEHA-3 Upper 119.86 21.51 14.6 - 24.6 2 11.35 108.51 3/29/2017 AEHA-30A Upper 105.51 13.00 4-14.5 2 2.94 102.57 3/29/2017 AEHA-31A Upper 107.33 12.75 4.5-14.5 2 3.72 103.61 3/29/2017 AEHA-32A Upper 111.53 15.50 9 - 19 2 7.61 103.92 3/29/2017 AEHA-4 Upper 122.66 --- 8.3-15.3 2 5.95 116.71 3/29/2017 CSMPZ-4 Upper 115.44 --- 10-20 2 --- --- 3/29/2017 CSMPZ-8 Upper 115.53 --- 10 - 20 2 --- --- 3/29/2017 DMW-8E Saprolite 121.33 99.00 93-98 2 22.63 98.70 3/29/2017 DMW-17A Upper --- 23.42 13.4 - 23.4 4 12.35 --- 3/29/2017 EBF-01S Upper 121.37 26.00 11.5 - 26.5 4 10.32 111.05 3/29/2017 EBF-03S Upper 121.65 26.25 12 - 27 4 9.58 112.07 3/29/2017 EBF-02D Upper 121.37 29.00 30-65 4 28.30 93.07 3/29/2017 EBF-04D Upper 121.72 33.20 30-65 4 31.80 89.92 3/29/2017 MWNGA-1 Upper 111.78 --- 10.3 - 19.7 2 3.50 108.28 3/29/2017 MWNGA-5 Upper 112.31 20.58 10.6 - 20 2 5.59 106.72 3/29/2017 OU6-MW-29 Upper 119.91 27.6 21-26 0.75 10.87 109.04 3/29/2017 OU6-MW-45 Upper 111.01 20.68 11 - 21 0.75 14.90 96.11 3/29/2017 OU6-MW-48 Upper 114.50 20.39 11 - 21 0.75 8.37 106.13 3/29/2017 OU6-MW-52 Upper 113.54 19.58 11 - 21 0.75 9.35 104.19 3/29/2017 OU6-MW-60 Upper 121.38 26.60 21 - 26 0.75 10.47 110.91 3/29/2017 OU6-MW-62 Upper 120.51 26.20 21 - 26 0.75 10.33 110.18 3/29/2017 OU6-MW-65 Upper 121.66 24.80 21 - 26 0.75 10.58 111.08 3/29/2017 OU6-MW-66 Upper 122.59 27.50 21 - 26 0.75 23.00 99.59 3/29/2017 OU6-MW-67 Upper 122.58 --- 21 - 26 0.75 11.10 111.48 3/29/2017 OU6-MW-68 Upper 122.23 26.60 21 - 26 0.75 11.70 110.53 3/29/2017 OU6-MW-69 Upper 121.91 24.40 21 - 26 0.75 11.28 110.63 3/29/2017 OU6-MW-72 Upper 114.63 20.49 16 - 21 0.75 6.55 108.08 3/29/2017 OU6-MW-79 Upper 109.33 15.27 10 - 15 0.75 8.48 100.85 3/29/2017 OU6-MW-82 Upper 109.12 18.50 13.5 - 18.5 0.75 5.56 103.56 3/29/2017 OU6-MW-84 Upper 111.54 17.05 12 - 17 0.75 5.78 105.76 3/29/2017 OU6-MW-85 Upper 116.34 20.46 16 - 21 0.75 6.58 109.76 3/29/2017 OU6-MW-87 Upper 116.38 --- 16 - 21 0.75 --- --- 3/29/2017 OU6-MW-88 Upper 117.53 20.78 16-21 0.75 11.04 106.49 3/29/2017 OU6-MW-90 Upper 117.21 --- 16 - 21 0.75 --- --- 3/29/2017

Notes:

-- Indicates data not available ft - feet in - inches Only monitoring wells gauged and sampled as part of the annual 2016 sampling event are included on this table.

Monitoring well construction data referenced from AECOM Draft Results of Annual Monitoring at Operable Units 6 & 7 - March 2015, Defense Supply Center Richmond report dated October 2016

2017 Annual OU6 and OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Location ID Aquifer Elevation (ft) Total Depth

(ft) Screen Interval

(ft)

Well Diameter

(in)

Depth to Water (ft)

Water Level Elevations (ft)

Groundwater Elevation

Measurement Date

OU6-MW-92 Lower 116.32 --- 30-40 2 19.28 97.04 3/29/2017 OU6-MW-112 Upper 120.59 --- 15 - 20 0.75 12.84 107.75 3/29/2017 OU6-MW-114 Upper 121.36 19.68 15 - 20 0.75 13.19 108.17 3/29/2017 OU6-MW-115 Upper 122.45 19.66 15 - 20 0.75 12.89 109.56 3/29/2017 OU6-MW-116 Upper 121.13 19.65 15 - 20 0.75 12.82 108.31 3/29/2017 OU6-MW-117 Upper 121.47 19.68 15 - 20 0.75 12.87 108.60 3/29/2017 OU6-MW-118 Upper 121.60 19.62 15 - 20 0.75 12.10 109.50 3/29/2017 OU6-MW-119 Upper 122.58 19.55 15-20 0.75 14.04 108.54 3/29/2017 OU6-MW-120/MW-2 Upper 123.25 25.73 17-22 0.75 14.50 108.75 3/29/2017 OU6-MW-121 Upper 121.03 19.47 15 - 20 0.75 12.25 108.78 3/29/2017 OU6-MW-222 Upper --- 27.31 --- --- 12.62 --- 3/29/2017 OU6-MW-123 Upper 121.98 19.41 15 - 20 0.75 14.41 107.57 3/29/2017 OU6-MW-124 Upper 122.59 19.42 15-20 0.75 14.73 107.86 3/29/2017 OU6-MW-125 Upper 121.77 --- 15 - 20 0.75 --- --- 3/29/2017 OU6-MW-127 Upper 122.30 21.42 17 - 22 0.75 12.94 109.36 3/29/2017 OU6-MW-128 Upper 122.87 --- 17 - 22 0.75 14.58 108.29 3/29/2017 OU6-MW-130 Upper 123.27 22.38 18 - 23 0.75 14.20 109.07 3/29/2017 OU6-MW-132 Upper 122.85 21.00 17 - 22 0.75 13.30 109.55 3/29/2017 OU6-MW-134 Upper 123.56 23.65 19 - 24 0.75 15.03 108.53 3/29/2017 OU6-MW-135 Upper 120.82 26.50 21 - 26 0.75 22.68 98.14 3/29/2017 OU6-MW-138 Lower 106.08 --- 35-44.5 2 15.81 90.27 3/29/2017 OU6-MW-141 Lower 104.97 44.09 35-44.5 2 14.85 90.12 3/29/2017 OU6-MW-144 Upper 105.06 8.53 3.5 - 8 2 3.75 101.31 3/29/2017 OU6-MW-150 Upper 102.48 --- 2.5 - 7 2 2.29 100.19 3/29/2017 OU6-MW-152 Upper 102.61 8.18 3 - 7.5 2 4.09 98.52 3/29/2017 OU6-MW-158 Upper 102.25 7.89 3 - 7.5 2 2.52 99.73 3/29/2017 OU6-MW-169 Upper 111.66 21.00 11 - 21 2 8.65 103.01 3/29/2017 OU6-MW-178 Upper 111.57 21.28 11 - 21 2 8.62 102.95 3/29/2017 OU6-MW-179 Upper 121.07 --- 15 - 25 2 --- --- 3/29/2017 OU6-MW-182 Upper 116.40 19.55 10 - 20 2 10.84 105.56 3/29/2017 OU6-PZ-1 Upper 101.84 6.92 2 - 7 2 4.43 97.41 3/29/2017 OU6-PZ-5 Upper 105.94 9.80 2 - 7 2 5.71 100.23 3/29/2017 AEHA-23B Lower 115.90 52.30 32 - 52 4 20.04 95.86 3/29/2017 AEHA-25B Lower 110.40 48.70 8.1 - 18.1 4 17.89 92.51 3/29/2017 AEHA-26B Lower 107.46 55.09 35-55 4 13.99 93.47 3/29/2017 AEHA-27B Lower 107.69 --- 30 - 50 4 --- --- 3/29/2017 AEHA-28B Lower 111.21 --- 30 - 50 4 --- --- 3/29/2017 AEHA-30B Lower 105.62 41.50 20.5 - 40.5 4 14.64 90.98 3/29/2017 AEHA-31B Lower 107.51 --- 30 - 50 4 --- --- 3/29/2017 DMW-28B Lower 122.20 51.95 46 - 51 2 24.53 97.67 3/29/2017 DMW-34B Lower 118.00 48.70 43 - 48 2 19.06 98.94 3/29/2017 MWNGA-8 Lower 106.56 42.60 27.9 - 42.2 2 15.38 91.18 3/29/2017 MWNGA-9 Lower 107.20 46.75 32.2 - 46.5 2 15.79 91.41 3/29/2017

Notes:

-- Indicates data not available ft - feet in - inches Only monitoring wells gauged and sampled as part of the annual 2016 sampling event are included on this table.

Monitoring well construction data referenced from AECOM Draft Results of Annual Monitoring at

2017 Annual OU6 and OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Location ID Aquifer Elevation (ft) Total Depth

(ft) Screen Interval

(ft)

Well Diameter

(in)

Depth to Water (ft)

Water Level Elevations (ft)

Groundwater Elevation

Measurement Date

OU6-MW-96 Lower 122.00 46.30 25-45 2 24.55 97.45 3/29/2017 OU6-MW-94 Lower 105.48 34.90 25 - 35 2 14.35 91.13 3/29/2017 OU6-MW-142 Lower 104.80 49.44 40 - 49.5 2 14.27 90.53 3/29/2017 OU6-MW-145 Lower 105.27 46.70 40 - 49.5 2 14.73 90.54 3/29/2017 OU6-MW-147 Lower 104.09 --- 41 - 51.5 2 13.16 90.93 3/29/2017 OU6-MW-148 Lower 104.97 --- 25 - 34.5 2 --- --- 3/29/2017 OU6-MW-151 Lower 102.10 --- 30 - 39.5 2 10.87 91.23 3/29/2017 OU6-MW-157 Lower 102.02 40.28 30 - 39.5 2 11.21 90.81 3/29/2017 OU6-MW-159 Lower 122.60 47.60 38 - 47.5 2 37.24 85.36 3/29/2017 OU6-MW-160 Lower 121.81 48.90 38 - 47.5 2 19.94 101.87 3/29/2017 OU6-MW-165 Lower 122.44 50.00 40 - 50 2 20.16 102.28 3/29/2017 OU6-MW-166 Lower 122.71 50.34 40 - 50 2 21.13 101.58 3/29/2017 OU6-MW-168 Lower 121.61 50.17 40 - 50 2 20.04 101.57 3/29/2017 OU6-MW-170 Lower 121.15 --- 41 - 51 2 --- --- 3/29/2017 OU6-MW-171 Lower 122.65 51.19 40 - 50 2 21.35 101.30 3/29/2017 OU6-MW-180 Lower 115.39 49.97 40 - 50 2 16.80 98.59 3/29/2017 USGS-BR1 Saprolite 102.43 100.09 71 - 96 3 4.62 97.81 3/29/2017

Notes:

-- Indicates data not available ft - feet in - inches Only monitoring wells gauged and sampled as part of the annual 2016 sampling event are included on this table.

Monitoring well construction data referenced from AECOM Draft Results of Annual Monitoring at

Table 2-2 OU7 Monitoring Well Construction Details and Groundwater Elevation Data

2017 Annual OU6 and OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Location ID Aquifer Elevation (ft) Total Depth

(ft) Screen

Interval (ft) Well

Diameter (in) Depth to Water (ft)

Water Level Elevations

(ft)

Groundwater Elevation

Measurement Date

AEHADG-9 Lower 104.2 17.50 5.3 - 18.3 2 7.53 96.67 3/30/2017 AEHADG-11 Lower 103.4 -- 6.1 - 16.1 2 7.63 95.77 3/30/2017 OU7-CMT-18-1 Lower 96.26 12.74 12.5 - 14 0.5 6.33 89.93 3/30/2017 OU7-CMT-18-4 Lower 96.56 31.85 31.5 - 33 0.5 6.41 90.15 3/30/2017 OU7-CMT-18-5 Lower 96.56 26.90 26.5 - 28 0.5 6.46 90.10 3/30/2017 OU7-CMT-18-6 Lower 96.56 19.17 18.5 - 20 0.5 6.38 90.18 3/30/2017 OU7-CMT-20-2 Lower 95.6949 13.06 11.5 - 13 0.5 9.76 85.93 3/30/2017 OU7-CMT-20-5 Lower 95.6949 31.55 31.5 - 33 0.5 11.85 83.84 3/30/2017 OU7-CMT-22-6 Lower 97.83 38.10 12.5 - 14 0.5 30.63 67.20 3/30/2017 OU7-CMT-24-1 Lower 94.52 12.79 12.5 - 14 0.5 7.45 87.07 3/30/2017 OU7-CMT-24-5 Lower 94.67 27.05 26.5 - 28 0.5 7.58 87.09 3/30/2017 OU7-CMT-24-6 Lower 94.67 19.26 18.5 - 20 0.5 7.37 87.30 3/30/2017 DMW-21A Lower 87.51 NM -- 4 NM -- 3/30/2017 DMW-22A Lower 87.22 NM 19.8 - 24.8 4 NM -- 3/30/2017 DMW-29A Lower 97.72 28.60 23 - 28 4 9.34 88.38 3/30/2017 DMW-33A Lower 85.09 -- 5 - 15 4 5.28 79.81 3/30/2017 EBF-05S Lower 94.67 27.00 8 - 28 4 9.54 85.13 3/30/2017 MWFOS-3 Lower 103.34 16.87 7.24 - 16.94 2 9.43 93.91 3/30/2017 MWFOS-4 Lower 103.77 17.80 8.24 - 17.94 2 10.07 93.70 3/30/2017 MWFTA-1 Lower 91.41 13.73 9.1 - 14.1 2 4.09 87.32 3/30/2017 MWFTA-11 Lower 101.22 27.75 24 - 29 2 7.41 93.81 3/30/2017 MWFTA-12 Lower 92.12 17.81 3.5 - 18.5 2 4.32 87.80 3/30/2017 MWFTA-22 Lower 103.22 34.14 5.3 - 33.3 2 9.50 93.72 3/30/2017 MWFTA-23 Lower 102.83 33.58 5.3 - 34.3 2 9.20 93.63 3/30/2017 MWFTA-24 Lower 103.08 32.94 5.3 - 34.3 2 9.13 93.95 3/30/2017 MWFTA-26 Lower -- 32.95 -- 2 8.48 -- 3/30/2017 MWFTA-27 Lower 98.47 30.38 5.3 - 32.3 2 7.28 91.19 3/30/2017 OU7-MW-40 Lower 96.30 12.70 13-23 0.75 9.00 87.30 3/30/2017 OU7-MW-41 Lower 99.42 11.68 7 - 12 0.75 8.04 91.38 3/30/2017 OU7-MW-48 Lower 98.91 13.67 15 - 25 0.75 7.56 91.35 3/30/2017 OU7-MW-51 Lower 98.36 25.37 16 - 26 0.75 7.59 90.77 3/30/2017 OU7-MW-53 Lower 97.98 19.38 10 - 20 0.75 7.72 90.26 3/30/2017 OU7-MW-54 Lower 97.89 19.43 2.5 - 20 0.75 7.48 90.41 3/30/2017 OU7-MW-55 Lower 98.92 21.40 4.5-22 0.75 7.84 91.08 3/30/2017 OU7-MW-56 Lower 98.94 14.60 5 - 15 0.75 8.96 89.98 3/30/2017 OU7-MW-57 Lower 98.39 14.70 5 - 15 0.75 8.69 89.70 3/30/2017 OU7-MW-59 Lower 95.54 25.70 6 - 26 0.75 7.83 87.71 3/30/2017 OU7-MW-61 Lower 95.75 25.20 16 - 26 0.75 8.10 87.65 3/30/2017 OU7-MW-62 Lower 95.42 15.60 6 - 16 0.75 8.48 86.94 4/18/2016 OU7-MW-69 Lower 95.38 16.10 7 - 17 0.75 8.75 86.63 3/30/2017 OU7-MW-72 Lower 95.06 14.50 5 - 15 0.75 9.20 85.86 4/18/2016 OU7-MW-77 Lower 97.6292 21.49 17 - 22 0.75 8.59 89.04 3/30/2017 OU7-MW-78 Lower 97.202 16.61 12 - 17 0.75 8.73 88.47 3/30/2017 OU7-MW-79 Lower 97.26 25.64 -- 0.75 8.63 88.63 3/30/2017 OU7-MW-80 Lower 94.8817 20.23 16 - 21 0.75 7.78 87.10 3/30/2017 OU7-MW-83 Lower 94.57 19.69 15 - 20 0.75 7.95 86.62 3/30/2017 OU7-MW-84 Lower 94.48 19.59 15 - 20 0.75 7.78 86.70 3/30/2017 OU7-MW-86 Lower 83.62 12.17 8 -13 0.75 2.44 81.18 3/30/2017 OU7-MW-89 Lower 96.2401 14.52 9 - 14 0.75 9.05 87.19 3/30/2017 OU7-MW-90 Lower 96.3512 13.60 9 - 14 0.75 8.55 87.80 3/30/2017 OU7-MW-91 Lower 96.27 12.89 8 - 13 0.75 8.44 87.83 3/30/2017 OU7-MW-92 Lower 96.3849 11.92 7 - 12 0.75 7.46 88.92 3/30/2017

Notes:

-- Data not available ft - feet in - inches Only monitoring wells gauged and sampled as part of the annual 2017 sampling event are included on this table.

Monitoring well construction data referenced from AECOM Draft Results of Annual Monitoring at Operable Units 6 & 7 - March 2015, Defense Supply Center Richmond report dated October

Table 2-2 OU7 Monitoring Well Construction Details and Groundwater Elevation Data

2017 Annual OU6 and OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Location ID Aquifer Elevation (ft) Total Depth

(ft) Screen

Interval (ft) Well

Diameter (in) Depth to Water (ft)

Water Level Elevations

(ft)

Groundwater Elevation

Measurement Date

OU7-MW-93 Lower 96.4144 21.00 14 - 19 0.75 7.63 18.65 3/30/2017 OU7-MW-95 Lower 97.1145 15.13 11 - 16 0.75 7.70 89.41 3/30/2017 OU7-MW-97 Lower 97.8353 13.44 9 - 14 0.75 8.44 89.40 3/30/2017 OU7-MW-98 Lower 98.6137 13.56 9 - 14 0.75 8.59 90.02 3/30/2017 OU7-MW-116 Lower -- 13.82 9.5-14.5 0.75 8.37 -- 3/30/2017 OU7-MW-117 Lower 98.09 14.96 10 - 14.9 0.75 9.94 88.15 3/30/2017 OU7-MW-118 Lower 97.68 12.98 8.5 - 13.5 0.75 9.43 88.25 3/30/2017 OU7-MW-119 Lower -- 13.90 9.5-14.9 0.75 6.48 -- 3/30/2017 OU7-MW-120 Lower -- 15.52 10-14.9 0.75 7.31 -- 3/30/2017 OU7-MW-121 Lower -- 15.33 10-14.9 0.75 7.51 -- 3/30/2017 OU7-MW-122 Lower 96.837 15.31 10 - 14.9 0.75 7.96 88.88 3/30/2017 OU7-MW-123 Lower 96.68 14.45 10 - 14.9 0.75 9.78 86.90 3/30/2017 OU7-MW-124 Lower 97.223 14.50 10 - 14.9 0.75 9.24 87.98 3/30/2017 OU7-MW-125 Lower 102.364 15.13 10 - 14.9 0.75 10.46 91.90 3/30/2017 OU7-MW-127 Lower 97.732 19.90 15 - 20 2 9.35 88.38 3/30/2017 OU7-MW-139 Lower 98.803 29.72 20 - 30 2 9.15 89.65 3/30/2017 OU7-MW-140 Lower 97.815 29.78 20 - 30 2 7.91 89.91 3/30/2017 OU7-MW-141 Lower 95.733 19.67 10 - 20 2 7.29 88.44 3/30/2017 OU7-MW-142 Lower 97.241 24.32 15 - 25 2 9.64 87.60 3/30/2017 OU7-MW-143 Lower 96.098 15.69 8 - 18 2 9.52 86.58 3/30/2017 OU7-MW-144 Lower 96.323 29.40 20 - 30 2 6.83 89.49 3/30/2017 OU7-MW-145 Lower 96.109 29.55 20 - 30 2 6.84 89.27 3/30/2017 OU7-MW-146 Lower 94.814 -- 16 - 26 2 7.79 87.02 3/30/2017 OU7-MW-147 Lower 85.25 16.00 6 - 16 2 3.14 82.11 3/30/2017 OU7-MW-148 Lower 84.77 17.50 8 - 18 2 2.90 81.87 3/30/2017 OU7-MW-149 Lower 84.74 19.35 10 - 20 2 3.15 81.59 3/30/2018 OU7-MW-150 Lower 94.149 24.90 15 - 25 2 9.35 84.80 3/30/2018 OU7-PZ-1 Lower 83.26 NM 5 - 15 2 NM -- 3/30/2017 OU7-PZ-2 Lower 83.23 14.39 5 - 15 2 2.50 80.73 3/30/2017 OU7-PZ-4 Lower 83.77 19.25 7.07 - 16.57 2 5.22 78.55 3/30/2017 OU7-PZ-5 Lower 83.81 NM 5 - 15 2 NM -- 3/30/2017 OU7-PZ-6 Lower 83.71 NM 7 - 17 2 2.39 81.32 3/30/2017 OU7-PZ-7 Lower 84.44 19.23 7.5 - 17 2 5.24 79.20 3/30/2017 OU7-PZ-8 Lower 83.74 22.96 11.5 - 21 2 4.57 79.17 3/30/2017 OU7-PZ-9 Lower 83.72 16.50 5 - 15 2 3.94 79.78 3/30/2017 DMW-29B Saprolite 97.98 49.00 43 - 48 2 16.47 81.51 3/30/2017 OU7-CMT-18-2 Saprolite 96.56 44.07 43.5 - 45 0.5 18.00 78.56 3/30/2017 OU7-CMT-18-7 Saprolite 96.26 48.45 48.5 - 50 0.5 20.49 75.77 3/30/2017 OU7-CMT-20-1 Saprolite -- 44.40 43.5 - 45 0.5 18.70 -- 3/31/2017 OU7-CMT-20-7 Saprolite 95.6949 48.55 47.5 - 49 0.5 19.06 76.63 3/30/2017 OU7-CMT-21-7 Saprolite 94.56 19.1 24.5 - 26 0.5 Dry --- 3/30/2017 OU7-CMT-22-7 Saprolite 97.59 48.55 47.5 - 49 0.5 40.45 57.14 3/30/2017 OU7-CMT-24-2 Saprolite 94.67 44.29 25 - 40 0.5 19.10 75.57 3/30/2017 OU7-CMT-24-3 Saprolite 94.67 33.78 38.5 - 40 0.5 17.40 77.27 3/30/2017 OU7-CMT-24-7 Saprolite 94.52 48.72 48.5 - 50 0.5 17.92 76.60 3/30/2017 MWFTA-16 Saprolite 103.25 47.80 45 - 50 2 14.18 89.07 3/30/2017 PWFTA-2 Saprolite 86.07 42.04 45 - 60 2 -- -- 3/30/2017 OU7-MW-101 Saprolite 98.5 50.44 40 - 50 2 17.17 81.33 3/30/2017 OU7-MW-103 Saprolite 96.77 47.75 39 - 49 2 11.83 84.94 3/30/2017 OU7-MW-99 Saprolite 97.85 49.83 40 - 50 2 17.09 80.76 3/30/2017

Notes:

-- Data not available ft - feet in - inches Only monitoring wells gauged and sampled as part of the annual 2017 sampling event are included on this table.

Monitoring well construction data referenced from AECOM Draft Results of Annual Monitoring at Operable Units 6 & 7 - March 2015, Defense Supply Center Richmond report dated October

Table 2-3 OU6 Groundwater Sampling and Analysis Plan

2017 Annual OU6 and OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Well ID VOCs 8260B

TOC

9060A

Common Anions 9056A

Dissolved Gases

RSK-175

SVOCs 8270D

Metals 6010C/7470

A

PAHs 8270D

Pesticides 8081B

PCBs 8082A

Dioxins

OU6 - No Name Creek Surface Water

NNC-1 X

NNC-2 X

NNC-3 X

OU6 - Upper WBU Wells

AEHA-14A* X X X X X X X X X

AEHA-15A X X X X X X X X X

AEHA-16A X X X X

AEHA-18A X X X X X X X X X

AEHA-2b X X X X

AEHA-22Ab X X X X

AEHA-25A X X X X

AEHA-26A X X X X X X X X X

AEHA-28A* X X X X

AEHA-29A* X X X X

AEHA-3 X X X X

AEHA-30Ab X X X X

AEHA-31Ab X X X X

AEHA-32A X X X X X X X X X

AEHA-4b X X X X

CSMPZ4* b X X X X

CSMPZ8** X X X X

DMW-17A X X X X

DMW-18 A* X X X X

MWNGA-1* X X X X

MWNGA-5 X X X X

OU6-EBF-01S X X X X

OU6-EBF-03S X X X X

OU6-MW-112* X X X X

OU6-MW-114* X X X X

OU6-MW-115 X X X X

OU6-MW-116 X X X X

OU6-MW-117 X X X X

OU6-MW-118 X X X X

OU6-MW-119b X X X X

OU6-MW-223b X X X X

OU6-MW-121 X X X X

OU6-MW-222b X X X X

OU6-MW-123* X X X X

OU6-MW-124b X X X X

OU6-MW-125* X X X X

OU6-MW-127* X X X X

OU6-MW-128* X X X X

OU6-MW-130 X X X X

OU6-MW-132* X X X X

OU6-MW-134 X X X X

OU6-MW-135 X X X X

OU6-MW-144 X X X X

OU6-MW-150* X X X X

OU6-MW-152* X X X X

OU6-MW-158 X X X X

OU6-MW-169 X X X X

OU6-MW-178 X X X X

OU6-MW-179* X X X X

02118201.0001 1 of 3

2017 Annual OU6 and OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Well ID VOCs 8260B

TOC

9060A

Common Anions 9056A

Dissolved Gases

RSK-175

SVOCs 8270D

Metals 6010C/7470

A

PAHs 8270D

Pesticides 8081B

PCBs 8082A

Dioxins

OU6-MW-182 X X X X

OU6-MW-226 X X X X

OU6-MW-45* X X X X

OU6-MW-45b X X X X

OU6-MW-52* X X X X

OU6-MW-60* X X X X

OU6-MW-62** X X X X X X X X X X

OU6-MW-65 X X X X

OU6-MW-66* X X X X

OU6-MW-67* X X X X

OU6-MW-68 X X X X

OU6-MW-69* X X X X

OU6-MW-72 X X X X

OU6-MW-79* X X X X

OU6-MW-82** X X X X

OU6-MW-84 X X X X

OU6-MW-85* X X X X

OU6-MW-87* X X X X

OU6-MW-88b X X X X

OU6-MW-90* X X X X

OU6-PZ-1* X X X X

OU6-PZ-5 X X X X

OU6 - Lower WBU Wells

AEHA-23B X X X X

AEHA-25B X X X X X

AEHA-26B X

AEHA-27B* X X X X

AEHA-28B* X X X X

AEHA-29B* X X X X

AEHA-30B X X X X

AEHA-31B** X X X X

DMW-28B X X X X

DMW-34B X X X X

OU6-MW-216* X X X X

OU6-MW-217* X X X X

MWNGA-8 X X X X X

MWNGA-9 X

OU6-MW-138 X X X X

OU6-MW-141 X X X X X

OU6-MW-142 X X X X X

OU6-MW-145 X X X X X

OU6-MW-146* X X X X

OU6-MW-147* X X X X X

OU6-MW-148* X

OU6-MW-151* X X X X X

OU6-MW-157 X X X X

OU6-MW-159* X X X X

OU6-MW-160 X X X X

OU6-MW-165 X X X X

OU6-MW-166 X X X X

OU6-MW-168 X X X X

OU6-MW-170* X X X X

OU6-MW-171 X X X X

OU6-MW-180 X X X X

OU6-MW-181 X X X X

OU6-MW-92 X X X X

OU6-MW-94 X X X X X

02118201.0001 2 of 3

2017 Annual OU6 and OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Well ID VOCs 8260B

TOC

9060A

Common Anions 9056A

Dissolved Gases

RSK-175

SVOCs 8270D

Metals 6010C/7470

A

PAHs 8270D

Pesticides 8081B

PCBs 8082A

Dioxins

OU6-MW-96 X X X X

OU 6 - Saprolite (WBU) Wells

DMW-28E X X X X

USGS-BR1 X X X X

Notes:

VOCs - Volatile Organic Compounds TOCs - Total Organic Carbon Common anions include Chloride (Cl) and Sulfate (SO4)

Dissoloved Gases include Methane, Ethane, and Ethene SVOCs - Semi-Volatile Organic Compounds PAHs - Polyaromatic Hydrocarbons PCBs - Polychlorinated Biphenyls Dioxins specifically analyzed for 1,4-Dioxane, bis (2-ethylhexyl) phthalate

* Well utilized for Emulsified Vegetable Oil (EVO) injections. EVO in well at time of sampling.

** Well not utilized for EVO injections. EVO present in well at time of sampling.

b - Monitoring well sampled on a biennial schedule. Next scheduled sampling to occur in 2019.

02118201.0001 3 of 3

Table 2-4 OU7 Sampling and Analysis Plan

2017 Annual OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Well ID Well

Construction (in)

Hydrasleeve (Y/N)

Sampling Frequency

VOCs 8260B

TOC

9060A

Common Anions 9056A

Dissolved Gases

RSK-175

SVOCs 8270D

Metals 6010C/7470

A

PAHs 8270D

Pesticides 8081B

PCBs 8082A

Dioxins

OU 7 - Kingsland Creek Surface Water KGC-1 Annual X KGC-2 Annual X KGC-3 Annual X

OU 7 - Lower WBU Wells AEHADG-11 2 N Annual X X X X AEHADG-9 2 N Biennial X X X X DMW-29A 4 N Annual X X X X DMW-33A 4 N Annual X X X X EBF-05S 4 N Annual X X X X MWFOS-3 2 N Annual X X X X MWFOS-4 2 N Annual X X X X MWFTA-1 2 N Biennial X X X X X X X X X X MWFTA-11 2 N Biennial X X X X MWFTA-12 2 N Biennial X X X X X X X X X X MWFTA-22 2 N Annual X X X X MWFTA-23 2 N Annual X X X X MWFTA-24 2 N Annual X X X X MWFTA-26 2 N Biennial X X X X MWFTA-27 2 N Biennial X X X X OU7-CMT-18-1 (14') 0.5 N Annual X X X X OU7-CMT-18-4 (33') 0.5 N Annual X X X X OU7-CMT-18-5 (28') 0.5 N Annual X X X X OU7-CMT-18-6 (20') 0.5 N Annual X X X X OU7-CMT-20-2 (13') 0.5 N Annual X X X X OU7-CMT-20-5 (33') 0.5 N Annual X X X X OU7-CMT-22-6 (14) 0.5 N Annual X X X X OU7-CMT-24-1 (14') 0.5 N Annual X X X X OU7-CMT-24-5 (28') 0.5 N Annual X X X X OU7-CMT-24-6 (20') 0.5 N Annual X X X X OU7-MW-116 0.75 N Biennial X X X X OU7-MW-117 0.75 N Annual X X X X OU7-MW-118 0.75 N Annual X X X X OU7-MW-119 0.75 N Biennial X X X X OU7-MW-120 0.75 N Biennial X X X X OU7-MW-121 0.75 N Biennial X X X X OU7-MW-122 0.75 N Annual X X X X OU7-MW-123 0.75 N Annual X X X X OU7-MW-124 0.75 N Annual X X X X OU7-MW-125 0.75 N Annual X X X X OU7-MW-127 2 N Biennial X X X X OU7-MW-139 2 N Annual X X X X OU7-MW-140 2 N Annual X X X X OU7-MW-141 2 N Annual X X X X OU7-MW-142 2 N Annual X X X X OU7-MW-143 2 N Annual X X X X OU7-MW-144 2 N Annual X X X X OU7-MW-145 2 N Annual X X X X OU7-MW-146 2 N Annual X X X X OU7-MW-147 2 N Annual X X X X X X X X X X OU7-MW-148 2 N Annual X X X X X X X X X X OU7-MW-149 2 N Annual X X X X X X X X X X OU7-MW-150 2 N Annual X X X X OU7-MW-40 0.75 N Biennial X X X X OU7-MW-41 0.75 N Annual X X X X OU7-MW-48 0.75 N Annual X X X X OU7-MW-51 0.75 N Annual X X X X OU7-MW-53 0.75 N Annual X X X X OU7-MW-54 0.75 N Annual X X X X OU7-MW-55 0.75 N Biennial X X X X OU7-MW-56 0.75 N Annual X X X X

Table 2-4 OU7 Sampling and Analysis Plan

2017 Annual OU7 Groundwater Monitoring Report Defense Supply Center Richmond

Richmond, Virginia

Well ID Well

Construction (in)

Hydrasleeve (Y/N)

Sampling Frequency

VOCs 8260B

TOC

9060A

Common Anions 9056A

Dissolved Gases

RSK-175

SVOCs 8270D

Metals 6010C/7470

A

PAHs 8270D

Pesticides 8081B

PCBs 8082A

Dioxins

OU7-MW-57 0.75 N Annual X X X X OU7-MW-59 0.75 N Annual X X X X OU7-MW-61 0.75 N Annual X X X X OU7-MW-62 0.75 N Annual X X X X OU7-MW-69 0.75 N Annual X X X X OU7-MW-72 0.75 N Annual X X X X OU7-MW-77 0.75 N Annual X X X X

OU7-MW-79b 0.75 N Biennial-2017 X X X X OU7-MW-80 0.75 N Annual X X X X OU7-MW-83 0.75 N Annual X X X X OU7-MW-84 0.75 N Annual X X X X OU7-MW-86* 0.75 N Biennial X X X X OU7-MW-89 0.75 N Annual X X X X OU7-MW-90 0.75 N Annual X X X X OU7-MW-91 0.75 N Annual X X X X OU7-MW-92 0.75 N Annual X X X X OU7-MW-93 0.75 N Annual X X X X OU7-MW-95 0.75 N Annual X X X X OU7-MW-97 0.75 N Annual X X X X OU7-MW-98 0.75 N Annual X X X X OU7-PZ-2 2 N Annual X X X X X X X X X X OU7-PZ-4 2 N Annual X X X X OU7-PZ-7 2 N Biennial X X X X OU7-PZ-8 2 N Annual X X X X OU7-PZ-9 2 N Biennial X X X X

OU 7 - Saprolite WBU Wells DMW-29B 2 N Annual X X X X MWFTA-16 2 N Biennial X X X X OU7-CMT-18-2 (45') 0.5 N Annual X X X X OU7-CMT-18-7 (50') 0.5 N Annual X X X X OU7-CMT-20-1 (45') 0.5 N Biennial X X X X OU7-CMT-20-7 (49') 0.5 N Annual X X X X OU7-CMT-21-7 (49') 0.5 N Annual X X X X OU7-CMT-22-7 (49') 0.5 N Biennial X X X X OU7-CMT-24-2 (45') 0.5 N Annual X X X X OU7-CMT-24-3 (40') 0.5 N Annual X X X X OU7-CMT-24-7 (49') 0.5 N Biennial X X X X OU7-MW-101 2 N Biennial X X X X OU7-MW-103 2 N Biennial X X X X OU7-MW-99 2 N Annual X X X X PWFTA-2 2 N Annual X X X X

Notes:

VOCs - Volatile Organic Compounds TOCs - Total Organic Carbon Common anions include Chloride (Cl) and Sulfate (SO4)

Dissoloved Gases include Methane, Ethane, and Ethene SVOCs - Semi-Volatile Organic Compounds PAHs - Polyaromatic Hydrocarbons PCBs - Polychlorinated Biphenyls Dioxins specifically analyzed for 2, 3, 7 ,8-Tetrachlorodibenzo-p-dioxin (2, 3, 7, 8-TCDD)

* Well utilized for Emulsified Vegetable Oil (EVO) injections. EVO in well at time of sampling.

Table 4-1 OU6 Groundwater Analytical Data - VOCs

Upper Water Bearing Unit 2016 Annual OU6 and OU7 Groundwater Monitoring Report

Defense Supply Center Richmond Richmond, Virginia

AEHA-2 AEHA-3 AEHA-15A AEHA-16A AEHA-18A AEHA-22A AEHA-25A AEHA-26A

4/18/2017 4/18/2017 4/18/2017 4/19/2017 4/20/2017 4/19/2017 4/19/2017 4/20/2017

AEHA-2_041817 AEHA-3_041817 AEHA-15A_041817 AEHA-16A_041917 AEHA-18A_042017 AEHA-22A_041917 AEHA-25A_041917 AEHA-26A_042017 OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells

Analyte CAS Units MCL VOCs 1,1,1,2-Tetrachloroethane 630-20-6 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,1,1-Trichloroethane 71-55-6 ug/l 200 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,1,2,2-Tetrachloroethane 79-34-5 ug/l -- < 0.200 U < 0.200 U < 0.200 U [< 0.200 U] < 0.200 U < 0.400 U < 0.200 U < 0.400 U < 0.400 U 1,1,2-Trichloroethane 79-00-5 ug/l 5 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,1-Dichloroethane 75-34-3 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,1-Dichloroethene 75-35-4 ug/l 7 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,1-Dichloropropene 563-58-6 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,2,3-Trichlorobenzene 87-61-6 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,2,3-Trichloropropane 96-18-4 ug/l -- < 1.00 U < 1.00 U < 1.00 U [< 1.00 U] < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 2.00 U 1,2,4-Trichlorobenzene 120-82-1 ug/l 70 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,2,4-Trimethylbenzene 95-63-6 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,2-Dibromo-3-chloropropane 96-12-8 ug/l 0.2 < 1.00 U < 1.00 U < 1.00 U [< 1.00 U] < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 2.00 U 1,2-Dibromoethane 106-93-4 ug/l 0.05 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,2-Dichlorobenzene 95-50-1 ug/l 600 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,2-Dichloroethane 107-06-2 ug/l 5 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,2-Dichloropropane 78-87-5 ug/l 5 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,3,5-Trimethylbenzene 108-67-8 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,3-Dichlorobenzene 541-73-1 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,3-Dichloropropane 142-28-9 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 1,4-Dichlorobenzene 106-46-7 ug/l 75 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 2,2-Dichloropropane 594-20-7 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 2-Butanone (MEK) 78-93-3 ug/l -- < 5.00 U < 5.00 U < 5.00 U [< 5.00 U] < 5.00 U < 10.0 U < 5.00 U < 10.0 U < 10.0 U 2-Chlorotoluene 95-49-8 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 4-Chlorotoluene 106-43-4 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U 4-Methyl-2-Pentanone 108-10-1 ug/l -- < 2.50 U < 2.50 U < 2.50 U [< 2.50 U] < 2.50 U < 5.00 U < 2.50 U < 5.00 U < 5.00 U Acetone 67-64-1 ug/l -- 7.64 J < 5.00 U 4.54 J [4.01 J] 4.75 J < 10.0 UB 4.60 J 102 D < 10.0 UB Benzene 71-43-2 ug/l 5 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Bromobenzene 108-86-1 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Bromochloromethane 74-97-5 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Bromodichloromethane 75-27-4 ug/l 80 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Bromoform 75-25-2 ug/l 80 < 0.500 UJ < 0.500 UJ < 0.500 UJ [< 0.500 U] < 0.500 UJ < 1.00 U < 0.500 UJ < 1.00 UJ < 1.00 U Bromomethane 74-83-9 ug/l -- < 1.00 U < 1.00 U < 1.00 U [< 1.00 U] < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 2.00 U Carbon Disulfide 75-15-0 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 UJ < 1.00 U < 0.500 UJ < 1.00 UJ < 1.00 U Notes:

TOC - Total Organic Carbon ug/L - micrograms per liter mg/L - milligrams per liter

-- indicates no result

MCL - Maximum Concentration Limit

U - not detected

J - estimated

D - diluted

B - constituent detected in blank sample

[ ] Concentrations indicated with brackets indicate duplicate sample concentration

Bold - Indicates concentration was detected

Bold - Indicates concentration was detected above MCL (116 exceedances were found)

Location ID Sample Date

Sample ID Description Field Notes

Upper Water Bearing Unit 2016 Annual OU6 and OU7 Groundwater Monitoring Report

Defense Supply Center Richmond Richmond, Virginia

AEHA-2 AEHA-3 AEHA-15A AEHA-16A AEHA-18A AEHA-22A AEHA-25A AEHA-26A

4/18/2017 4/18/2017 4/18/2017 4/19/2017 4/20/2017 4/19/2017 4/19/2017 4/20/2017

AEHA-2_041817 AEHA-3_041817 AEHA-15A_041817 AEHA-16A_041917 AEHA-18A_042017 AEHA-22A_041917 AEHA-25A_041917 AEHA-26A_042017 OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells

Analyte CAS Units MCL

Location ID Sample Date

Sample ID Description Field Notes

VOCs Carbon Tetrachloride 56-23-5 ug/l 5 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U CFC-11 75-69-4 ug/l -- < 1.00 U < 1.00 U < 1.00 U [< 1.00 U] < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 2.00 U CFC-12 75-71-8 ug/l -- < 1.00 U < 1.00 U < 1.00 U [< 1.00 U] < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 2.00 U Chlorobenzene 108-90-7 ug/l 100 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Chlorodibromomethane 124-48-1 ug/l 80 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 UJ < 1.00 U < 0.500 UJ < 1.00 UJ < 1.00 U Chloroethane 75-00-3 ug/l -- < 1.00 U < 1.00 U < 1.00 U [< 1.00 U] < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 2.00 U Chloroform 67-66-3 ug/l 80 < 0.500 U < 0.500 U 0.456 J [0.488 J] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Chloromethane 74-87-3 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U cis-1,2-Dichloroethene 156-59-2 ug/l 70 < 0.500 U < 0.500 U 0.322 J [0.278 J] < 0.500 U 1.13 J < 0.500 U 11.3 D 0.804 J cis-1,3-Dichloropropene 10061-01-5 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Cymene (p-Isopropyltoluene) 99-87-6 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Dibromomethane 74-95-3 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Dichloromethane 75-09-2 ug/l 5 < 1.00 U < 1.00 U < 1.00 U [< 1.00 U] < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 2.00 U Ethylbenzene 100-41-4 ug/l 700 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Hexachloro-1,3-butadiene 87-68-3 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Isopropylbenzene 98-82-8 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U m&p-Xylenes ARC-mpXyl ug/l -- < 1.00 U < 1.00 U < 1.00 U [< 1.00 U] < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 2.00 U Methyl N-Butyl Ketone (2-Hexanone) 591-78-6 ug/l -- < 2.50 U < 2.50 U < 2.50 U [< 2.50 U] < 2.50 U < 5.00 U < 2.50 U < 5.00 U < 5.00 U Methyl-tert-butylether 1634-04-4 ug/l -- < 0.500 U < 0.500 U 0.834 J [0.870 J] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U n-Butylbenzene 104-51-8 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U n-Propylbenzene 103-65-1 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U o-Xylene 95-47-6 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U sec-Butylbenzene 135-98-8 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Styrene (Monomer) 100-42-5 ug/l 100 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U tert-Butylbenzene 98-06-6 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Tetrachloroethene 127-18-4 ug/l 5 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Toluene 108-88-3 ug/l 1000 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U trans-1,2-Dichloroethene 156-60-5 ug/l 100 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U trans-1,3-Dichloropropene 10061-02-6 ug/l -- < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 1.00 U Trichloroethene 79-01-6 ug/l 5 < 0.500 U < 0.500 U 11 [12.7] < 0.500 U 0.644 J < 0.500 U 10.5 D < 1.00 U Vinyl chloride 75-01-4 ug/l 2 < 0.500 U < 0.500 U < 0.500 U [< 0.500 U] < 0.500 U 1.02 J < 0.500 U 0.604 J 0.948 J Notes:

TOC - Total Organic Carbon ug/L - micrograms per liter mg/L - milligrams per liter

-- indicates no result

MCL - Maximum Concentration Limit

U - not detected

J - estimated

D - diluted

B - constituent detected in blank sample

[ ] Concentrations indicated with brackets indicate duplicate sample concentration

Bold - Indicates concentration was detected

Bold - Indicates concentration was detected above MCL (116 exceedances were found)

Upper Water Bearing Unit 2016 Annual OU6 and OU7 Groundwater Monitoring Report

Defense Supply Center Richmond Richmond, Virginia

Analyte CAS Units MCL VOCs 1,1,1,2-Tetrachloroethane 630-20-6 ug/l -- 1,1,1-Trichloroethane 71-55-6 ug/l 200 1,1,2,2-Tetrachloroethane 79-34-5 ug/l -- 1,1,2-Trichloroethane 79-00-5 ug/l 5 1,1-Dichloroethane 75-34-3 ug/l -- 1,1-Dichloroethene 75-35-4 ug/l 7 1,1-Dichloropropene 563-58-6 ug/l -- 1,2,3-Trichlorobenzene 87-61-6 ug/l -- 1,2,3-Trichloropropane 96-18-4 ug/l -- 1,2,4-Trichlorobenzene 120-82-1 ug/l 70 1,2,4-Trimethylbenzene 95-63-6 ug/l -- 1,2-Dibromo-3-chloropropane 96-12-8 ug/l 0.2 1,2-Dibromoethane 106-93-4 ug/l 0.05 1,2-Dichlorobenzene 95-50-1 ug/l 600 1,2-Dichloroethane 107-06-2 ug/l 5 1,2-Dichloropropane 78-87-5 ug/l 5 1,3,5-Trimethylbenzene 108-67-8 ug/l -- 1,3-Dichlorobenzene 541-73-1 ug/l -- 1,3-Dichloropropane 142-28-9 ug/l -- 1,4-Dichlorobenzene 106-46-7 ug/l 75 2,2-Dichloropropane 594-20-7 ug/l -- 2-Butanone (MEK) 78-93-3 ug/l -- 2-Chlorotoluene 95-49-8 ug/l -- 4-Chlorotoluene 106-43-4 ug/l -- 4-Methyl-2-Pentanone 108-10-1 ug/l -- Acetone 67-64-1 ug/l -- Benzene 71-43-2 ug/l 5 Bromobenzene 108-86-1 ug/l -- Bromochloromethane 74-97-5 ug/l -- Bromodichloromethane 75-27-4 ug/l 80 Bromoform 75-25-2 ug/l 80 Bromomethane 74-83-9 ug/l -- Carbon Disulfide 75-15-0 ug/l -- Notes:

TOC - Total Organic Carbon ug/L - micrograms per liter mg/L - milligrams per liter

-- indicates no result

MCL - Maximum Concentration Limit

U - not detected

J - estimated

D - diluted

B - constituent detected in blank sample

[ ] Concentrations indicated with brackets indicate duplicate sample concentration

Bold - Indicates concentration was detected

Bold - Indicates concentration was detected above MCL (116 exceedances were found)

Location ID Sample Date

Sample ID Description Field Notes

AEHA-30A AEHA-31A AEHA-32A AEHA-4 DMW-17A EBF-01S EBF-03S MWNGA-5

4/20/2017 4/19/2017 4/19/2017 4/18/2017 4/18/2017 4/18/2017 4/18/2017 4/19/2017

AEHA-30A_042017 AEHA-31A_041917 AEHA-32A_041917 AEHA-4_041817 DMW-17A_041817 EBF-01S_041817 EBF-03S_041817 MWNGA-5_041917 OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells

< 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 0.400 U < 0.400 U < 0.200 U < 0.400 U < 0.200 U < 0.400 U < 0.200 U < 0.200 U < 1.00 U < 1.00 U 0.377 J < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U 2.02 < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U 0.366 J < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U 0.811 J < 0.500 U 0.867 J < 1.00 U < 1.00 U 1.57 < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U 0.505 J 3.12 < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 10.0 U < 10.0 U < 5.00 U < 10.0 U < 5.00 U < 10.0 U < 5.00 U < 5.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 5.00 U < 5.00 U < 2.50 U < 5.00 U < 2.50 U < 5.00 U < 2.50 U < 2.50 U

90.2 D 103 D 3.46 J 15.3 J < 5.00 U 27.2 D < 5.00 U < 5.00 U

< 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 UJ < 0.500 UJ < 1.00 UJ < 0.500 UJ < 1.00 U < 0.500 UJ < 0.500 UJ < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 1.00 U

< 1.00 U < 1.00 UJ < 0.500 UJ < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U

Upper Water Bearing Unit 2016 Annual OU6 and OU7 Groundwater Monitoring Report

Defense Supply Center Richmond Richmond, Virginia

Analyte CAS Units MCL

Location ID Sample Date

Sample ID Description Field Notes

VOCs Carbon Tetrachloride 56-23-5 ug/l 5 CFC-11 75-69-4 ug/l -- CFC-12 75-71-8 ug/l -- Chlorobenzene 108-90-7 ug/l 100 Chlorodibromomethane 124-48-1 ug/l 80 Chloroethane 75-00-3 ug/l -- Chloroform 67-66-3 ug/l 80 Chloromethane 74-87-3 ug/l --cis-1,2-Dichloroethene 156-59-2 ug/l 70 cis-1,3-Dichloropropene 10061-01-5 ug/l -- Cymene (p-Isopropyltoluene) 99-87-6 ug/l -- Dibromomethane 74-95-3 ug/l -- Dichloromethane 75-09-2 ug/l 5 Ethylbenzene 100-41-4 ug/l 700 Hexachloro-1,3-butadiene 87-68-3 ug/l -- Isopropylbenzene 98-82-8 ug/l --m&p-Xylenes ARC-mpXyl ug/l -- Methyl N-Butyl Ketone (2-Hexanone) 591-78-6 ug/l -- Methyl-tert-butylether 1634-04-4 ug/l --n-Butylbenzene 104-51-8 ug/l --n-Propylbenzene 103-65-1 ug/l --o-Xylene 95-47-6 ug/l --sec-Butylbenzene 135-98-8 ug/l -- Styrene (Monomer) 100-42-5 ug/l 100 tert-Butylbenzene 98-06-6 ug/l -- Tetrachloroethene 127-18-4 ug/l 5 Toluene 108-88-3 ug/l 1000 trans-1,2-Dichloroethene 156-60-5 ug/l 100 trans-1,3-Dichloropropene 10061-02-6 ug/l -- Trichloroethene 79-01-6 ug/l 5 Vinyl chloride 75-01-4 ug/l 2 Notes:

TOC - Total Organic Carbon ug/L - micrograms per liter mg/L - milligrams per liter

-- indicates no result

MCL - Maximum Concentration Limit

U - not detected

J - estimated

D - diluted

B - constituent detected in blank sample

[ ] Concentrations indicated with brackets indicate duplicate sample concentration

Bold - Indicates concentration was detected

Bold - Indicates concentration was detected above MCL (116 exceedances were found)

AEHA-30A AEHA-31A AEHA-32A AEHA-4 DMW-17A EBF-01S EBF-03S MWNGA-5

4/20/2017 4/19/2017 4/19/2017 4/18/2017 4/18/2017 4/18/2017 4/18/2017 4/19/2017

AEHA-30A_042017 AEHA-31A_041917 AEHA-32A_041917 AEHA-4_041817 DMW-17A_041817 EBF-01S_041817 EBF-03S_041817 MWNGA-5_041917 OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells

< 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 1.00 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U 0.293 J 24.3 D 0.721 J 3.3

< 1.00 U < 1.00 UJ < 0.500 UJ < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U

< 2.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 1.00 U

< 1.00 U < 1.00 U < 0.500 UB < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U

< 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U 59.4 J < 1.00 U < 0.500 U 1.52 J 0.808 J 0.435 J < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 2.00 U < 1.00 U < 1.00 U < 5.00 U < 5.00 U < 2.50 U < 5.00 U < 2.50 U < 5.00 U < 2.50 U < 2.50 U < 1.00 U < 1.00 U 0.817 J < 1.00 U 0.260 J < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U

< 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 UJ < 0.500 U

< 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U 1.4 < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U 0.302 J < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U < 1.00 U < 1.00 U 11.8 < 1.00 U < 0.500 U < 1.00 U < 0.500 U < 0.500 U

0.583 J < 1.00 U 0.524 J < 1.00 U < 0.500 U 0.578 J < 0.500 U 3.35

Upper Water Bearing Unit 2016 Annual OU6 and OU7 Groundwater Monitoring Report

Defense Supply Center Richmond Richmond, Virginia

Analyte CAS Units MCL VOCs 1,1,1,2-Tetrachloroethane 630-20-6 ug/l -- 1,1,1-Trichloroethane 71-55-6 ug/l 200 1,1,2,2-Tetrachloroethane 79-34-5 ug/l -- 1,1,2-Trichloroethane 79-00-5 ug/l 5 1,1-Dichloroethane 75-34-3 ug/l -- 1,1-Dichloroethene 75-35-4 ug/l 7 1,1-Dichloropropene 563-58-6 ug/l -- 1,2,3-Trichlorobenzene 87-61-6 ug/l -- 1,2,3-Trichloropropane 96-18-4 ug/l -- 1,2,4-Trichlorobenzene 120-82-1 ug/l 70 1,2,4-Trimethylbenzene 95-63-6 ug/l -- 1,2-Dibromo-3-chloropropane 96-12-8 ug/l 0.2 1,2-Dibromoethane 106-93-4 ug/l 0.05 1,2-Dichlorobenzene 95-50-1 ug/l 600 1,2-Dichloroethane 107-06-2 ug/l 5 1,2-Dichloropropane 78-87-5 ug/l 5 1,3,5-Trimethylbenzene 108-67-8 ug/l -- 1,3-Dichlorobenzene 541-73-1 ug/l -- 1,3-Dichloropropane 142-28-9 ug/l -- 1,4-Dichlorobenzene 106-46-7 ug/l 75 2,2-Dichloropropane 594-20-7 ug/l -- 2-Butanone (MEK) 78-93-3 ug/l -- 2-Chlorotoluene 95-49-8 ug/l -- 4-Chlorotoluene 106-43-4 ug/l -- 4-Methyl-2-Pentanone 108-10-1 ug/l -- Acetone 67-64-1 ug/l -- Benzene 71-43-2 ug/l 5 Bromobenzene 108-86-1 ug/l -- Bromochloromethane 74-97-5 ug/l -- Bromodichloromethane 75-27-4 ug/l 80 Bromoform 75-25-2 ug/l 80 Bromomethane 74-83-9 ug/l -- Carbon Disulfide 75-15-0 ug/l -- Notes:

TOC - Total Organic Carbon ug/L - micrograms per liter mg/L - milligrams per liter

-- indicates no result

MCL - Maximum Concentration Limit

U - not detected

J - estimated

D - diluted

B - constituent detected in blank sample

[ ] Concentrations indicated with brackets indicate duplicate sample concentration

Bold - Indicates concentration was detected

Bold - Indicates concentration was detected above MCL (116 exceedances were found)

Location ID Sample Date

Sample ID Description Field Notes

OU6-MW-115 OU6-MW-116 OU6-MW-117 OU6-MW-118 OU6-MW-119 OU6-MW-121 OU6-MW-124

4/20/2017 4/20/2017 4/18/2017 4/18/2017 4/17/2017 4/18/2017 4/17/2017

OU6-MW-115_042017 OU6-MW-116_042017 OU6-MW-117_041817 OU6-MW-118_041817 OU6-MW-119_041717 OU6-MW-121_041817 OU6-MW-124_041717 OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells

< 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U 0.355 J < 1.00 U < 5.00 U < 0.400 U < 0.400 U < 0.400 U < 0.400 U < 0.200 U < 0.400 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U 6.11 D < 1.00 U < 1.00 U < 1.00 U 0.515 J 0.520 J < 12.5 U 6.68 D 5.54 D < 1.00 U < 1.00 U 0.649 J < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 25.0 U < 2.00 U < 2.00 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 25.0 U < 2.00 U < 2.00 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 125 U < 10.0 U < 10.0 U < 10.0 U < 10.0 U < 5.00 U < 10.0 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 62.5 U < 5.00 U < 5.00 U < 5.00 U < 5.00 U < 2.50 U < 5.00 U

< 125 U < 10.0 UB 9.58 J 15.8 J < 10.0 UB < 5.00 UB < 10.0 UB

< 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 25.0 U < 2.00 U < 2.00 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U

Upper Water Bearing Unit 2016 Annual OU6 and OU7 Groundwater Monitoring Report

Defense Supply Center Richmond Richmond, Virginia

Analyte CAS Units MCL

Location ID Sample Date

Sample ID Description Field Notes

VOCs Carbon Tetrachloride 56-23-5 ug/l 5 CFC-11 75-69-4 ug/l -- CFC-12 75-71-8 ug/l -- Chlorobenzene 108-90-7 ug/l 100 Chlorodibromomethane 124-48-1 ug/l 80 Chloroethane 75-00-3 ug/l -- Chloroform 67-66-3 ug/l 80 Chloromethane 74-87-3 ug/l --cis-1,2-Dichloroethene 156-59-2 ug/l 70 cis-1,3-Dichloropropene 10061-01-5 ug/l -- Cymene (p-Isopropyltoluene) 99-87-6 ug/l -- Dibromomethane 74-95-3 ug/l -- Dichloromethane 75-09-2 ug/l 5 Ethylbenzene 100-41-4 ug/l 700 Hexachloro-1,3-butadiene 87-68-3 ug/l -- Isopropylbenzene 98-82-8 ug/l --m&p-Xylenes ARC-mpXyl ug/l -- Methyl N-Butyl Ketone (2-Hexanone) 591-78-6 ug/l -- Methyl-tert-butylether 1634-04-4 ug/l --n-Butylbenzene 104-51-8 ug/l --n-Propylbenzene 103-65-1 ug/l --o-Xylene 95-47-6 ug/l --sec-Butylbenzene 135-98-8 ug/l -- Styrene (Monomer) 100-42-5 ug/l 100 tert-Butylbenzene 98-06-6 ug/l -- Tetrachloroethene 127-18-4 ug/l 5 Toluene 108-88-3 ug/l 1000 trans-1,2-Dichloroethene 156-60-5 ug/l 100 trans-1,3-Dichloropropene 10061-02-6 ug/l -- Trichloroethene 79-01-6 ug/l 5 Vinyl chloride 75-01-4 ug/l 2 Notes:

TOC - Total Organic Carbon ug/L - micrograms per liter mg/L - milligrams per liter

-- indicates no result

MCL - Maximum Concentration Limit

U - not detected

J - estimated

D - diluted

B - constituent detected in blank sample

[ ] Concentrations indicated with brackets indicate duplicate sample concentration

Bold - Indicates concentration was detected

Bold - Indicates concentration was detected above MCL (116 exceedances were found)

OU6-MW-115 OU6-MW-116 OU6-MW-117 OU6-MW-118 OU6-MW-119 OU6-MW-121 OU6-MW-124

4/20/2017 4/20/2017 4/18/2017 4/18/2017 4/17/2017 4/18/2017 4/17/2017

OU6-MW-115_042017 OU6-MW-116_042017 OU6-MW-117_041817 OU6-MW-118_041817 OU6-MW-119_041717 OU6-MW-121_041817 OU6-MW-124_041717 OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells OU6 - Upper WBU Wells

< 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 25.0 U < 2.00 U < 2.00 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U

< 25.0 U < 2.00 U < 2.00 U < 2.00 U < 2.00 U < 1.00 UJ < 2.00 U

< 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 25.0 U < 2.00 U < 2.00 U < 2.00 U < 2.00 U < 1.00 U < 2.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U < 12.5 U < 1.00 U < 1.00 U < 1.00 U < 1.00 U < 0.500 U < 1.00 U 1950 D 71.0 D 39.