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TABLE 2 GROUNDWATER MONITORING DATA,FORMER MOBIL STATION 99CAS,75 EAST ALPINE AVENUE,STOCKTON,CALIFORNIA
<br /> Casing Depth to Groundwater LPH Concentration(µg/L)
<br /> Well Elevation Water Elevation Thickness Ethyl- Total Oil and
<br /> Number Date (feet) (feet) (feet) (feet) Benzene° Toluene° benzene° Xylenesb TPH-g TPH-d Grease MTBE° PCBs' SVOCs
<br /> MW3 11/26/07 15.37 36.44 -21.07 0.00 9.3 7.0 32 200 630 66 d -- <0.50 -- --
<br /> MW3 02/28/08 15.37 34.00 -18.63 0.00 7.85 12.5 152 484 1,790 500 -- <0.500 -- -
<br /> MW3 05/29/08 15.37 34.55 -19.18 0.00 23.0 28.0 54.8 356 2,500 277 -- <0.500 -- --
<br /> MW3 08/27/08 15.37 36.85 -21.48 0.00 2.4 3.7 11 75 130 56 d -- <0.50 - --
<br /> MW3 11/13/08 15.37 37.33 -21.96 0.00 3.4 1.7 44 350 620 g <47 -- <0.50 -- --
<br /> MW3 01/28/09 15.37 38.04 -22.67 0.00 11 7.1 22 170 390 <50 -- <1.0 -- --
<br /> MW3 0429/09 15.37 37.76 -22.39 0.00 9.2 5.1 170 1,200 3,000 <50 - <1.0 -- --
<br /> MW3 07/14/09 15.37 39.43 -24.06 0.00 <10 <10 58 640 1,400 <50 -- <10 - --
<br /> MW3 10/27/09 1 15.37 39.86 -24.49 0.00 3.1 0.84 j 8.4 110 360 <50 -- <1.0 -- --
<br /> MW3 0125/10 15.37 37.95 -22.58 0.00 6.6 0.36 i 7.1 110 . 520 m <50 -- <0.50 -- -- •
<br /> MW3 04/07/10 15.37 36.20 -20.83 0.00 3.7 1.1 3.0 31 340 <50 -- <0.50 -- --
<br /> MW3 08/09/10 1 15.37 36.02 -20.65 0.00 1.6 <0.50 0.66 17 200 <50 -- <0.50 -- --
<br /> MW3 10/05/10 1 15.37 36.83 -21.46 0.00 0.59 <0.50 0.35 j- 7.2 250 m <50 - <0.50 -- --
<br /> MW3 02/09/11 15.37 35.60 -20.23 0.00 1.9 <0.50 1.9 38 280 m <50 n - <0.50 - -
<br /> MW4 0326/07 16.78 34.65 -17.87 0.00 9,400 49,000 2,900 17,000 120,000 6,000 -- <500 -- --
<br /> MW4 0628/07 16.78 35.61 -18.83 0.00 8,600 55,000 3,700 21,000 130,000 -- -- <500 -- --
<br /> MW4 09/12/07 16.78 38.15 -21.37 0.00 8,800 59,000 4,600 27,000 150,000 2,400 -- <500 -- --
<br /> MW4 1126/07 16.78 38.01 -21.23 0.00 9,000 50,000 3,700 21,000 110,000 4,900 d -- 600 -- --
<br /> MW4 02/28/08 16.78 35.56 -18.78 0.00 9,880 68,100 4,720 27,000 189,000 13,200 -- 1.07 a -- --
<br /> MW4 05/29/08 16.78 36.10 -19.32 0.00 7,080 67,600 4,830 27,300 171,000 10,500 -- <10.0 f -- --
<br /> MW4 0827/08 16.78 38.49 -21.71 0.00 7,000 51,000 3,700 23,000 89,000 4,000 d -- Q5 -- --
<br /> MW4 11/13/08 16.78 38.84 -22.06 0.00 5,800 50,000 3,900 20,000 100,000 g 7,000 d -- <50 -- --
<br /> MW4 01/28/09 16.78 39.66 -22.88 0.00 5,500 409000 3,000 17,000 140,000 550 -- <250 -- --
<br /> MW4 0429/09 16.78 39.46 -22.68 0.00 7,500 59,000 4,500 25,000 140,000 280 -- <1,200 -- -
<br /> MW4 07/14/09 16.78 41.17 -24.39 0.00 5,900 59,000 3,300 19,000 130,000 250 -- <1,200 -- --
<br /> MW4 1027/09 1 16.78 41.55 -24.77 0.00 6,100 61,000 4,100 24,000 120,000 2,200 m -- <1,200 -- --
<br /> MW4 0125/10 16.78 39.68 -22.90 0.00 5,600 54,000 4,400 26,000 150,000 m 520 m -- <1,200 -- -- •
<br /> MW4 04/07/10 16.78 37.80 -21.02 0.00 5,800 57,000 4,000 24,000 110,000 360 m -- <1,000 -- --
<br /> MW4 08/09/10 16.78 37.69 -20.91 0.00 4,500 49,000 3,100 19,000 99,000 m 520 m -- <1,000 -- --
<br /> MW4 10/05/10 16.78 38.43 -21.65 0.00 4,600 56,000 3,800 21,000 180,000 680 m -- <1,000 -- --
<br /> MW4 02/09/11 16.78 37.06 -20.28 0.00 5,100 54,000 4,000 22,000 110,000 m 580 m,n - <1,000 - --
<br /> MW5 0326/07 15.15 32.99 -17.84 0.00 3,700 1,100 560 1,400 <25,000 1,700 -- <250 -- --
<br /> MW5 06/28/07 15.15 33.98 -18.83 0.00 3,100 260 380 620 7,900 -- -- <50 -- --
<br /> MW5 09/12/07 15.15 36.54 -21.39 0.00 3,000 190 330 610 6,800 810 -- <25 -- --
<br /> MW5 1126/07 15.15 36.40 -21.25 0.00 2,500 250 240 530 8,500 750 d -- <25 -- --
<br /> MW5 02/28/08 15.15 33.96 -18.81 0.00 2,060 177 208 322 6,270 3,550 -- 2 e -- --
<br /> MW5 05/29/08 15.15 34.50 -19.35 0.00 1,520 383 267 524 11,300 3,190 -- 2 e -- --
<br /> MW5 0827/08 15.15 36.89 -21.74 0.00 1,400 150 150 310 4,100 790 d 1.5 -- --
<br /> MW5 11/13/08 15.15 37.20 -22.05 0.00 1,000 74 110 260 3,000 1,000 d -- 1.6 -- --
<br /> MWS 01/28/09 15.15 38.07 -22.92 0.00 920 11 52 66 2,900 87 -- 1.4 j -- --
<br /> MW5 0429/09 15.15 37.86 -22.71 0.00 810 <25 54 28 4,100 <50 -- <25 -- --
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