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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 16 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 /> Background/Compliance Wells Continued
<br /> 1/9/2008 Background 10:21 AM 4 83 56.18 26.82 28.62 -27.56 43.97 60 7.45 367 17.7 2.68 480 Clear,no odor
<br /> 4/1/2008 2nd Qtr./Compliance 10:00 AM 4 83 56.77 26.23 28.62 -28.15 51.36 60 7.43 599 18.5 4.0 70 Clear,no odor
<br /> 7/10/2008 3rd Qtr. 1:01 PM 4 83 57.51 25.49 28.62 -28.89 49.91 60 7.53 703 20.6 4.2 86 Clear,no odor
<br /> 10/21/2008 4th Qtr./Compliance 12:17 PM 4 83 60.43 22.57 28.62 -31.81 44.19 60 7.43 663 19.1 3.7 192 Clear,no odor
<br /> 1/9/2009 1st Qtr. 9:11 AM 4 83 62.26 20.74 28.62 -33.64 40.61 60 6.84 687 17.7 2.2 391 Turbid,no odor
<br /> 4/7/2009 2nd Qtr. 7:11 AM 4 83 62.95 20.05 28.62 -34.33 39.25 60 7.36 855 18.8 4.8 63 Clear,no odor
<br /> 7/14/2009 3rd Qtr. 4:05 PM 4 83 65.04 17.96 28.62 -36.42 35.16 60 7.35 793 21.7 5.1 52 Clear,no odor
<br /> 10/12/2009 4th Qtr. 4:48 PM 4 83 67.25 15.75 28.62 -38.63 30.84 30 7.47 671 18.7 3.5 118 Clear,no odor
<br /> 2/1/2010 1st Qtr. 7:15 AM 4 83 65.82 17.18 28.62 -37.20 33.64 30 7.61 647 17.5 6.0 216 Clear,no odor
<br /> 4/14/2010 2nd Qtr. 10:24 AM 4 83 63.84 19.16 28.62 -35.22 37.52 60 7.43 602 18.6 3.9 223 Clear,no odor
<br /> MW-302 Shallow 7/7/2010 3rd Qtr. 5:49 PM 4 83 58.33 24.67 28.62 -29.71 48.31 60 7.31 585 19.5 3.7 120 Clear,no odor
<br /> 10/13/2010 4th Qtr. 10:56 AM 4 83 57.01 25.99 28.62 -28.39 50.89 60 7.54 584 19.1 3.6 179 Clear,no odor
<br /> 1/21/2011 1st Qtr. 12:21 PM 4 83 57.98 25.02 28.62 -29.36 48.99 60 7.44 548 18.2 6.0 267 Clear,no odor
<br /> 4/14/2011 2nd Qtr. 8:07 PM 4 83 54.31 28.69 28.62 -25.69 56.18 60 7.19 457 17.9 5.3 212 Clear,no odor
<br /> 7/20/2011 3rd Qtr. 12:56 PM 4 83 52.51 30.49 28.62 -23.89 59.70 60 7.61 440 19.2 5.9 202 Clear,no odor
<br /> 10/12/2011 4th Qtr. 6:06 PM 4 83 51.52 31.48 28.62 -22.90 61.64 60 7.46 455 18.8 6.0 232 Clear,no odor
<br /> 1/25/2012 1st Qtr. 9:56 AM 4 83 57.98 25.02 28.62 -29.36 48.99 60 7.47 386 18.3 3.9 272 Clear,no odor
<br /> 4/24/2012 2nd Qtr. 4:26 PM 4 83 51.61 31.39 28.62 -22.99 61.46 60 7.65 333 19.3 6.0 195 Clear,no odor
<br /> 7/23/2012 3rd Qtr 9:35 AM 4 83 52.39 30.61 28.62 -23.77 59.94 60 7.27 426 19.3 4.2 269 Clear,no odor
<br /> 10/23/2012 4th Qtr 2:11 PM 4 83 53.29 29.71 28.62 -24.67 58.18 60 6.97 469 19.1 7.4 197 Clear,no odor
<br /> 1/21/2008 Background NA 4 83 NA NA 26.36 NA NA NA NA NA NA NA NA Well pump inoperable
<br /> 4/1/2008 2nd Qtr./Compliance NA 4 83 NA NA 26.36 NA NA NA NA NA NA NA NA Well pump inoperable
<br /> 7/10/2008 3rd Qtr. NA 4 83 NA NA 26.36 NA NA NA NA NA NA NA NA Well pump inoperable
<br /> 10/22/2008 4th Qtr./Compliance 8:46 AM 4 83 56.28 26.72 26.36 -29.92 52.32 60 7.13 1,217 18.9 7.0 250 Clear,no odor
<br /> 1/9/2009 1st Qtr. NA 4 83 57.38 25.62 26.36 -31.02 50.16 60 NA NA NA NA NA Well pump inoperable
<br /> 4/7/2009 2nd Qtr. 3:41 PM 4 83 57.66 25.34 26.36 -31.30 49.56 60 NA NA NA NA NA NA
<br /> 7/15/2009 3rd Qtr. 10:22 AM 4 83 58.64 24.36 26.36 -32.28 47.69 60 7.11 1,368 20.8 7.8 87.0 Clear,no odor
<br /> 10/14/2009 4th Qtr. 1:46 PM 4 83 59.9 23.10 26.36 -33.54 45.23 60 7.11 1,394 20.4 5.8 -9.0 Clear,no odor
<br /> 2/2/2010 1st Qtr. 2:41 PM 4 83 60.16 22.84 26.36 -33.80 44.72 60 7.21 1,421 18.6 6.8 237.0 Clear,no odor
<br /> 4/14/2010 2nd Qtr. 5:04 PM 4 83 58.84 24.16 26.36 -32.48 47.30 60 7.34 1,367 19.4 6.3 220 Clear,no odor
<br /> MW-304 Shallow 7/8/2010 3rd Qtr. 2:36 PM 4 83 56.94 26.06 26.36 -30.58 51.03 60 7.23 1,231 20.5 6.6 154 Clear,no odor
<br /> 10/13/2010 4th Qtr. 4:59 PM 4 83 56.32 26.68 26.36 -29.96 52.24 60 7.30 1,234 20.3 6.2 212 Clear,no odor
<br /> 1/21/2011 1st Qtr. 7:01 PM 4 83 55.36 27.64 26.36 -29.00 54.12 60 7.32 1,139 19.0 8.2 223 Clear,no odor
<br /> 4/13/2011 2nd Qtr. 4:51 PM 4 83 53.98 29.02 26.36 -27.62 56.82 60 7.23 874 19.3 6.8 236 Clear,no odor
<br /> 7/20/2011 3rd Qtr. 10:51 AM 4 83 52.03 30.97 26.36 -25.67 60.64 60 7.25 963 20.0 6.7 237 Clear,no odor
<br /> 10/12/2011 4th Qtr. 3:34 PM 4 83 50.79 32.21 26.36 -24.43 63.07 60 7.43 669 20.4 5.1 227 Clear,no odor
<br /> 1/25/2012 1st Qtr. 10:38 AM 4 83 50.16 32.84 26.36 -23.80 64.30 60 7.21 589 19.1 5.8 248 Clear,no odor
<br /> 4/26/2012 2nd Qtr. 10:31 AM 4 83 49.6 33.40 26.36 -23.24 65.40 60 7.07 654 19.7 7.3 246 Clear,no odor
<br /> 7/24/2012 3rd Qtr 2:11 PM 4 83 49.22 33.78 26.36 -22.86 66.14 60 7.20 530 20.0 7.0 210 Clear,no odor
<br /> 10/24/2012 4th Qtr 9:54 AM 4 83 49.53 33.47 26.36 -23.17 65.54 90 6.90 661 19.3 8.3 269 Clear,no odor
<br /> 1/9/2008 Background 12:16 PM 4 87.5 54.22 33.28 30.90 -23.32 64.18 60 7.76 250 17.2 6.85 253 Clear,no odor
<br /> 7/10/2008 3rd Qtr. 1:57 PM 4 87.5 56.43 31.07 30.90 -25.53 59.85 60 7.68 332 20.9 7.3 155 Clear,no odor
<br /> 10/22/2008 4th Qtr./Compliance 7:36 AM 4 87.5 59.60 27.90 30.90 -28.70 53.65 60 7.41 318 17.6 7.0 640 Turbid,no odor
<br /> 1/8/2009 1st Qtr. 2:46 PM 4 87.5 61.68 25.82 30.90 -30.78 49.57 60 7.60 307 17.1 5.4 76 Clear,no odor
<br /> 4/7/2009 2nd Qtr. 11:13 AM 4 87.5 59.00 28.50 30.90 -28.10 45.03 60 7.60 373 19.3 5.7 187 Clear,no odor
<br /> 7/14/2009 3rd Qtr. 9:56 AM 4 87.5 64.65 22.85 30.90 -33.75 43.76 60 7.48 355 20.0 7.9 157 Clear,no odor
<br /> 10/12/2009 4th Qtr. 10:51 AM 4 87.5 67.43 20.07 30.90 -36.53 38.32 60 7.64 344 18.7 7.7 154 Clear,no odor
<br /> 2/1/2010 1st Qtr. 12:47 PM 4 87.5 64.43 23.07 30.90 -33.53 44.19 60 7.74 389 18.0 7.8 209 Clear,no odor
<br /> 4/13/2010 2nd Qtr. 1:46 PM 4 87.5 62.35 25.15 30.90 -31.45 49.25 60 7.36 379 18.4 6.3 253 Brown,no odor
<br /> MW-401 Shallow 7/7/2010 3rd Qtr. 11:27 AM 4 87.5 53.02 34.48 30.90 -22.12 67.52 90 7.30 308 19.6 5.8 258 Clear,no odor
<br /> 10/12/2010 4th Qtr. 3:51 PM 4 87.5 54.21 33.29 30.90 -23.31 65.19 60 7.80 302 19.0 5.5 177 Clear,no odor
<br /> 1/20/2011 1st Qtr. 11:41 AM 4 87.5 56.91 30.59 30.90 -26.01 59.90 60 7.66 305 18.6 6.8 306 Clear,no odor
<br /> 4/13/2011 2nd Qtr. 9:39 AM 4 87.5 49.31 38.19 30.90 -18.41 74.78 90 7.55 276 18.2 6.0 184 Clear,no odor
<br /> 7/19/2011 3rd Qtr. 1:49 PM 4 87.5 46.00 41.50 30.90 -15.10 81.26 90 7.57 311 19.0 5.4 270 Clear,no odor
<br /> 10/12/2011 4th Qtr. 10:09 AM 4 87.5 49.53 37.97 30.90 -18.63 74.35 90 7.74 285 19.0 4.5 310 Clear,no odor
<br /> 1/24/2012 1st Qtr. 3:14 PM 4 87.5 51.46 36.04 30.90 -20.56 70.57 90 7.76 261 18.0 6.8 260 Clear,no odor
<br /> 4/24/2012 2nd Qtr. 3:49 PM 4 87.5 49.15 38.35 30.90 -18.25 75.09 90 7.66 194 18.3 6.7 193 Clear,no odor
<br /> 7/23/2012 3rd Qtr 11:29 AM 4 87.0 50.83 36.17 30.90 -19.93 70.82 90 7.61 256 20.1 7.1 293 Clear,no odor
<br /> 10/23/2012 4th Qtr 10:04 AM 4 87.5 52.51 34.99 30.90 -21.61 68.51 90 7.27 298 18.1 13.5 254 Clear,no odor
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