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TABLE 1A
<br /> CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br /> Former Mobil Service Station 99CAS
<br /> 75 E.Alpine Avenue
<br /> Stockton,California
<br /> (Page 3 of 7)
<br /> Weil Sarnapling TCC D rVV GW Elev. NAPL TPHd TPH9 O&G MTBE B T E x PCBs SVDCs
<br /> ID Date (feet) (`:ee.J (feet) (feet) (pg?L) (pglL) (Vg/L) (Ug/L) (Pg/L) (pglL) (ug/L) (Ng1L) (pg/L) (Ng/L)
<br /> MW4 04/29/09 16.78 39.46 -22.68 No 280 140,000 -- <1,200 7,500 59,000 4,500 25,000
<br /> MW4 07/14/09 16.78 41.17 -24.39 No 250 130,000 -- <1,200 5,900 59,000 3,300 19,000
<br /> MW4 10/27/09 16.78 41.55 -24.77 No --
<br /> MW4 10/28/09 16.78 -- -- -- 2,200d 120,000 - <1,200 6,100 61,000 4,100 24,000
<br /> MW4 01/25/10 16.78 39.68 -22.90 No 520d 150,OOOd -- <1,200 5,600 54,000 4,400 26,000
<br /> MW4 04/07/10 16.78 37.80 -21.02 No 360 110,000 -- <1,000 5,800 57,000 4,000 24,000
<br /> MW4 08/09/10 16.78 37.69 -20.91 No 520d 99,OOOd -- <1,000 4,500 49,000 3,100 19,000
<br /> MW4 10/05/10 16.78 38.43 -21.65 No 680d 180,000 -- <1,000 4,600 56,000 3,800 21,000 -
<br /> MW4 02/09/11 16.78 37.06 -20.28 No 580a,d 110,OOOd -- <1,000 5,100 54,000 4,000 22,000
<br /> MW4 05/18/11 16.78 34.12 -17.34 No -- - -
<br /> MW4 05/19/11 16.78 -- -- -- 410 120,000 -- <1,000 3,300 50,000 3,700 23,000
<br /> MW4 09/22/11 1 16.78 34.28 -17.50 No -
<br /> MW5 _-
<br /> MW5 03/26/07 15.15 32.99 -17.84 No 1,700 <25,000 -_ <250 3,700 1,100 560 1,400
<br /> MW5 06/28/07 15.15 33.98 -18.83 No -- 7,900 -- <50 3,100 260 380 620
<br /> MW5 09/12/07 15.15 36.54 -21.39 No 810 6,800 -- <25 3,000 190 330 610
<br /> MW5 11/26/07 15.15 36.40 -21.25 No 750d 8,500 -- <25 2,500 250 240 530
<br /> MW5 02/28/08 15.15 33.96 -18.81 No 3,550 6,270 -- 1.88e 2,060 177 208 322
<br /> MW5 05/29/08 15.15 34.50 -19.35 No 3,190 11,300 -- 1.8e 1,520 383 267 524
<br /> MW5 08/27/08 15.15 36.89 -21.74 No 790d 4,100 1.5 1,400 150 150 310 _
<br /> MW5 11/13/08 15.15 37.20 -22.05 No 1,OOOd 3,000 -- 1.6 1,000 74 110 260
<br /> MW5 01/28/09 15.15 38.07 -22.92 No 87 2,900 -- 1.4j 920 11 52 66 -- -
<br /> MW5 04/29/09 15.15 37.86 -22.71 No <50 4,100 -- <25 810 <25 54 28
<br /> MW5 07/14/09 15.15 39.54 -24.39 No <50 2,700 -- <10 510 17 26 24
<br /> MW5 10/27/09 15.15 39.90 -24.75 No -- --
<br /> MW5 10/28/09 15.15 -- -- -- 69m 4,900 -- <10 1,100 53 210 570
<br /> MW5 01/25/10 15.15 38.10 -22.95 No <50 6,700d -- <50 2,100 <50 110 210 -
<br /> MW5 04/07/10 15.15 36.16 -21.01 No 76 6.100d -- <25 1,600 24j 100 89 -
<br /> MW5 08/09/10 15.15 36.05 -20.90 No 100d 5,400d -- <25 1,100 32 140 100
<br /> MW5 10/05/10 15.15 36.80 -21.65 No
<br /> MW5 10/06/10 15.15 -- - - 150d 6,700d -- <25 980 21j 88 61 - -
<br /> MW5 02/09/11 15.15 35.45 -20.30 No 120a,d 3,700d -- <10 560 64 120 140
<br /> MW5 05/18/11 15.15 32.64 -17.49 No
<br /> MW5 05/19/11 15.15 -- -- -- 70d 2,100 -- <4.0 190 8.1 13 11 - -
<br /> MW5 09/22/11 15.15 32.65 -17.50 No 390a,d 1,400d <2.0 100 2.0 7.1 2.9 -- --
<br /> MW6 11/26/07 16.31 37.61 -21.30 No <47 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50
<br /> MW6 02/28/08 16.31 35.20 -18.89 No <47.2 <50.0 -- <0.500 <0.500 7.89 <0.500 <0.500
<br /> MW6 05/29/08 16.31 35.78 -19.47 No <47.2 <50.0 -- <0.500 <0.500 <0.500 <0.500 <0.500
<br /> MW6 08/27/08 16.31 38.09 -21.78 No <47 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50 __ __
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