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TABLE 4
<br /> FIELD PARAMETERS AND WELL DETAILS
<br /> 2012 ANNUAL GROUNDWATER MONITORING REPORT
<br /> FORMER MARLEY COOLING TOWER SITE
<br /> STOCKTON,CALIFORNIA
<br /> Page 14 of 17
<br /> Field Parameters
<br /> Top of
<br /> Well Depth to Water Casing Groundwater Calc Dissolved
<br /> Screened Water- Diameter Well Depth Water Column Elevation Elevation Purge Vol Purge Vol pH(standard EC Temp Oxygen ORP
<br /> Well bearing Zone Sample Date Event/Purpose Sample Time (in) (ft-btoc) (ft-btoc) Length(ft) (ft-amsl) (ft-amsl) (gal) (gal) units) (AS/Cm) (°C) (mg/L) (mV) Observations
<br /> In'ection Area Wells Continued
<br /> 12/6/2010 Baseline/4th Qtr. 10:08 AM 4 159.00 59.30 99.70 30.60 -28.70 195.22 240 7.65 723 5.8 5.8 216 Clear,no odor
<br /> 1/25/2011 1st Qtr. 2:49 PM 4 159.00 59.24 99.76 30.60 -28.64 195.34 240 7.62 602 18.7 6.3 239 Clear,no odor
<br /> 4/18/2011 2nd Qtr. 12:40 PM 4 159.00 56.75 102.25 30.60 -26.15 200.22 240 7.79 497 20.4 5.8 182 Clear,no odor
<br /> 5/23/2011 Supplemental 1:09 PM 4 159.00 56.48 102.52 30.60 -25.88 200.74 240 7.42 547 20.1 6.9 393 Clear,no odor
<br /> 6/20/2011 Supplemental 11:29 AM 4 159.00 56.13 102.87 30.60 -25.53 201.43 240 7.23 506 20.6 6.3 260 Clear,no odor
<br /> MW-4 Intermediate 7/21/2011 3rd Qtr. 3:49 PM 4 159.00 55.24 103.76 30.60 -24.64 203.17 240 7.73 425 21.9 6.8 231 Turbid,no odor
<br /> 8/22/2011 Supplemental 11:09 AM 4 159.00 53.57 105.43 30.60 -22.97 206.44 240 7.57 409 20.3 5.6 248 Turbid,no odor
<br /> 10/17/2011 4th Qtr. 11:29 AM 4 159.00 53.88 105.12 30.60 -23.28 205.84 240 7.59 443 20.1 5.0 175 Clear,no odor
<br /> 7/25/2012 3rd Qtr 9:09 AM 4 170.00 52.91 117.09 30.60 -22.31 229.27 240 7.32 514 20.1 5.8 261 Clear,no odor
<br /> 10/25/2012 4th Qtr 12:58 PM 4 159.00 54.22 104.78 30.60 -23.62 205.17 210 7.55 505 19.6 6.0 201 Turbid,no odor
<br /> 12/8/2010 Baseline/4th Qtr. 8:42 AM 4 180.00 56.51 123.49 28.61 -27.90 241.81 240 7.58 653 19.0 3.8 254 Clear,no odor
<br /> 1/25/2011 1st Qtr. 12:34 PM 4 180.00 56.26 123.74 28.61 -27.65 242.30 240 7.36 609 19.3 4.5 254 Clear,no odor
<br /> 4/18/2011 2nd Qtr. 10:07 AM 4 180.00 52.59 127.41 28.61 -23.98 249.48 270 7.81 510 20.2 6.0 216 Clear,no odor
<br /> 5/23/2011 Supplemental 1:57 PM 4 180.00 53.33 126.67 28.61 -24.72 248.03 270 7.42 542 20.5 3.8 307 Clear,no odor
<br /> MW-212 Intermediate 6/20/2011 Supplemental 12:12 PM 4 180.00 52.91 127.09 28.61 -24.30 248.85 270 7.22 499 20.6 5.7 208 Clear,no odor
<br /> 7/21/2011 3rd Qtr. 11:57 AM 4 180.00 50.90 129.10 28.61 -22.29 252.79 270 7.73 431 21.4 5.7 197 Clear,no odor
<br /> 8/22/2011 Supplemental 9:26 AM 4 180.00 48.30 131.70 28.61 -19.69 257.88 270 7.55 402 19.8 5.5 322 Clear,no odor
<br /> 10/13/2011 4th Qtr. 4:31 PM 4 180.00 50.32 129.68 28.61 -21.71 253.93 270 7.65 395 20.7 5.1 200 Clear,no odor
<br /> 7/19/2012 3rd Qtr 9:27 AM 4 159.90 51.01 108.89 27.87 -23.14 213.22 218 7.04 407 21.0 9.5 292 Clear,no odor
<br /> MW-4505 Intermediate 10/25/2012 4th Qtr 6:34 PM 4 160.00 52.05 107.95 27.87 -24.18 211.38 210 7.74 431 19.6 9.2 205 Clear,no odor
<br /> 7/19/2012 3rd Qtr 11:32 AM 4 180.95 50.86 130.09 27.81 -23.05 254.73 255 7.27 270 21.4 8.6 175 Clear,no odor
<br /> MW-450D Intermediate 10/24/2012 4th Qtr 5:17 PM 4 181.00 51.89 129.11 27.81 -24.08 252.81 255 7.41 285 20.7 9.2 196 Clear,no odor
<br /> 7/25/2012 3rd Qtr 1:50 PM 4 184.89 51.02 133.87 28.61 -22.41 262.13 263 7.45 403 23.4 5.9 152 Clear,no odor
<br /> MW-449D Intermediate 10/29/2012 4th Qtr 10:17 AM 4 181.00 51.89 129.11 28.61 -23.28 252.81 255 7.26 405 22.6 7.2 165 Clear,no odor
<br /> 7/25/2012 3rd Qtr 3:57 PM 4 159.20 51.11 108.09 28.69 -22.42 211.65 218 7.66 644 22.7 4.2 187 Clear,no odor
<br /> MW-449S Intermediate 10/25/2012 4th Qtr 4:44 PM 4 159.00 52.35 106.65 28.69 -23.66 208.83 210 7.39 603 20.5 2.5 206 Clear,no odor
<br /> Background/Compliance Wells
<br /> 1/9/2008 Background 1:51 PM 4 100 55.75 44.25 29.78 -25.97 50.71 60 7.61 524 17.6 6.44 214 Clear,no odor
<br /> 4/1/2008 2nd Qtr./Compliance 2:59 PM 4 100 55.93 44.07 29.78 -26.15 86.29 90 7.53 784 20.2 7.2 135 Clear,no odor
<br /> 7/10/2008 3rd Qtr. 4:32 PM 4 100 55.75 44.25 29.78 -25.97 84.57 90 7.30 1,112 21.0 6.5 84 Clear,no odor
<br /> 10/22/2008 4th Qtr./Compliance 9:04 AM 4 100 59.20 40.80 29.78 -29.42 79.77 90 7.25 970 19.7 5.7 244 Turbid,no odor
<br /> 1/9/2009 1st Qtr. 10:37 AM 4 100 60.77 39.23 29.78 -30.99 76.81 90 6.59 1,010 19.1 4.7 50 Turbid,no odor
<br /> 4/8/2009 2nd Qtr. 8:39 AM 4 100 61.61 38.39 29.78 -31.83 75.17 90 7.20 965 20.6 4.8 363 Turbid,no odor
<br /> 7/15/2009 3rd Qtr. 8:56 AM 4 100 63.41 36.59 29.78 -33.63 71.64 90 7.29 929 21.5 7.2 152 Turbid,no odor
<br /> 10/12/2009 4th Qtr. 6:06 PM 4 100 65.49 34.51 29.78 -35.71 67.57 90 7.33 929 19.8 6.8 -25 Turbid,no odor
<br /> 2/2/2010 1st Qtr. 12:34 PM 4 100 64.62 35.38 29.78 -34.84 69.27 90 7.24 979 18.9 5.3 221 Turbid,no odor
<br /> 4/14/2010 2nd Qtr. 3:14 PM 4 100 62.70 37.30 29.78 -32.92 73.03 90 7.39 891 20.0 5.0 204 Clear,no odor
<br /> MW-7 Shallow 7/8/2010 3rd Qtr. 11:38 AM 4 100 53.53 46.47 29.78 -23.75 90.99 90 7.38 813 21.1 5.9 123 Light brown,no odor
<br /> 10/13/2010 4th Qtr. 2:40 PM 4 100 56.70 43.30 29.78 -26.92 84.79 90 7.51 858 21.2 5.3 203 Turbid,no odor
<br /> 1/21/2011 1st Qtr. 5:44 PM 4 100 57.13 42.87 29.78 -27.35 83.94 90 7.41 852 19.3 7.2 281 Clear,no odor
<br /> 4/14/2011 2nd Qtr. 12:52 PM 4 100 54.05 45.95 29.78 -24.27 89.97 90 7.43 687 20.1 6.3 220 Clear,no odor
<br /> 7/20/2011 3rd Qtr. 5:54 PM 4 100 52.41 47.59 29.78 -22.63 93.19 90 7.55 690 20.6 6.1 267 Clear,no odor
<br /> 10/13/2011 4th Qtr. 11:16 AM 4 100 51.32 48.68 29.78 -21.54 95.32 90 7.57 546 20.2 5.7 245 Turbid,no odor
<br /> 1/24/2012 1st Qtr. 3:44 PM 4 100 52.90 47.10 29.78 -23.12 92.23 90 7.52 470 18.9 5.4 268 Clear,no odor
<br /> 4/25/2012 2nd Qtr. 3:19 PM 4 100 51.51 48.49 29.78 -21.73 94.95 90 7.37 547 20.1 6.0 230 Turbid,no odor
<br /> 7/24/2012 3rd Qtr 12:39 PM 4 100 51.33 48.67 29.78 -21.55 95.30 90 7.00 430 20.1 6.6 165 Clear,no odor
<br /> 10/23/2012 4th Qtr 5:59 PM 4 100 52.00 48.00 29.78 -22.22 93.99 90 7.33 436 19.0 8.3 196 Clear,no odor
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