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TABLE 1A
<br /> CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br /> Former Mobil Service Station 99CAS
<br /> 75 East Alpine Avenue
<br /> Stockton,California
<br /> (Page 4 of 11)
<br /> Well Sampling TOC DTW GW Elev. NAPL TPHd TPHg O&G MTBE B T E X PCBs SVOCs
<br /> ID Date (feet) (feet) (feet) (feet) (Ng/L) (ug/L) (ug/L) (ug/L) (ug/L) (Ng/L) (ug/L) (Ng/L) (ug/L) (ug/L)
<br /> MW4 11/30/11 16.78 33.11 -16.33 No 4,900a,d 120,000 ... <1,000 4,200 52,000 3,700 21,000
<br /> MW4 03/14/12 16.78 32.11 -15.33 No - --- ••. --- --- -•• --- --- --- ---
<br /> MW4 03/15/12 16.78 --- --- 2,900a,d 120,000 <1,000 5,500 71,000 5,400 31,000 --
<br /> MW4 05/03/12 16.78 31.83 -15.05 No --- --- -- --- ... --• --- - -
<br /> MW4 05/04/12 16.78 --- •-- --- 5,600a,d 110,000 <1,000 4,000 55,000 3,700 22,000 --- ---
<br /> MW4 08/24/12 16.78 33.49 -16.71 No 9,700a,d 130,000 <1,000 3,700 46,000 3,600 22,000 -
<br /> MW4 10/24/12 16.78 33.84 -17.06 No 9,800a,d 110,000 <670 3,600 45,000 3,800 23,000
<br /> MW4 01/30/13 16.78 32.14 -15.36 No --- --- --• ---
<br /> MW4 02/01/13 16.78 -- -- -- 7,600a,d 110,000 <1,000 3,600 51,000 4,200 24,000 -
<br /> MW4 05/03/13 16.78 31.95 -15.17 No 5,000a,d 150,000d <1,000 3,600 51,000 4,100 23,000 ---
<br /> MW4 08/21/13 16.78 33.07 -16.29 No - --- •• --- --- --• -
<br /> MW4 08/22/13 16.78 ... --- --- 9,300ad 99,000 --- <1,000 5,000 38,000 1,000 20,000 -
<br /> MW4 12/18/13 16.78 32.81 -16.03 No 7,300a,d 82,000 <400 7,500 24,000 1,000 19,000 - --
<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 1,000d 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 /> MW5 11/30/11 15.15 31.51 -16.36 No --- --- •-• --- --- ---
<br /> MW5 12/01/11 15.15 •-• --- --- 350a,d 1,800 <2.0 150 68 28 58 --- ---
<br /> MW5 03/14/12 15.15 30.54 -15.39 No --- --- --- -•• --- -- ••-
<br /> MW5 03/15/12 15.15 -- .-• -- 450a,d 1,700d <2.5 130 18 42 55 ---
<br /> MW5 05/03/12 15.15 30.25 -15.10 No 360a 1,500d <2.0 91 <2.0 20 12
<br /> MW5 08/24/12 15.15 31.97 -16.82 No 420a,d 1,100d --- <2.0 99 <2.0 12 3.1 -
<br /> <2.0 62 <2.0 3.7 <2.0
<br /> MW5 10/24/12 15.15 32.23 -17.08 No 360a,d 910d -•• -- •--
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