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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 9 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) (Ng/L) (ug/L) (Ng/L) (pg/L) (ug/L) (pg/L) (Ng/L) (pg/L) (ug/L)
<br /> DW4 05/03/12 15.98 Well inaccessible.
<br /> DW4 08/24/12 m 15.98 -- --- --- ---
<br /> DW4 10/24/12 m 15.98 --- --- - - --- ---
<br /> DW4
<br /> -DW4 01/30/13 15.98 31.83 -15.85 No -- ... --- --- -- -
<br /> DW4 01/31/13 15.98 --- --- <50a <50 --- <0.50 <0.50 <0.50 <0.50 <0.50 --- ---
<br /> DW4 05/03/13 m 15.98 --- - - -
<br /> DW4 08/21/13 m 15.98 --- - -
<br /> DW4 12/18/13 m 15.98 --- --- --- --- -- -
<br /> EX1 07/14/09 16.51 40.80 -24.29 No 500 170,000 <1,200 34,000 65,000 3,000 19,000
<br /> EX1 10/27/09 16.51 41.20 -24.69 No 3,500d 110,000 <1,200 22,000 54,000 2,300 14,000 ---
<br /> EX1 01/25/10 16.51 39.35 -22.84 No 400d 120,OOOd --- <1,200 18,000 54,000 2,400 16,000
<br /> EX1 04/07/10 16.51 37.47 -20.96 No 990 150,000 --- <1,000 28,000 66,000 3,600 21,000 -
<br /> EX1 08/09/10 16.51 37.33 -20.82 No - --- --- -
<br /> EX1 08/10/10 16.51 --- --- 700d 130,OOOd <1,000 25,000 65,000 3,100 19,000 - --
<br /> EX1 10/05/10 16.51 38.12 -21.61 No --- --- --- --- --- __ ...
<br /> EX1 10/06/10 16.51 ••- --- .-- 1,400d 240,000 <1,000 26,000 66,000 3,600 20,000 --- -
<br /> EX1 02/09/11 16.51 36.70 -20.19 No 910a,d 130,OOOd <1,000 19.000 56,000 3,000 17,000 - --
<br /> EX1 05/18/11 16.51 33.87 -17.36 No --• --- --- --- --- --
<br /> EX1 05/19/11 16.51 .-• --- --- 1,200d 160,000 <1,000 20,000 68,000 4,100 24,000
<br /> EX1 09/22/11 1 16.51 34.04 -17.53 No --- .-• --- --- --- ---
<br /> EX1 11/30/11 16.51 31.81 -15.30 No 7,OOOa,d 160,000 <1,000 16,000 65,000 3,500 20,000
<br /> EX1 03/14/12 16.51 31.79 -15.28 No -- --- - --• •-- ---
<br /> EX1 03/15/12 16.51 --- --- 4,OOOa,d 95,000 <1,000 6,600 38,000 2,200 14,000 ...
<br /> EX1 05/03/12 16.51 31.53 -15.02 No --- --- --- ... --- --- •--
<br /> EX1 05/04/12 16.51 --- --- --- 4,800a,d 86,000 <1,000 5,800 41,000 2,300 15,000 ...
<br /> EX1 08/24/12 16.51 33.17 -16.66 No 8,900a,d 130,000 <1,000 8,900 48,000 2,700 17,000 ---
<br /> EX1 10/24/12 16.51 33.49 -16.98 No 7,400a,d 140,000 --- <1,000 8,500 45,000 2,100 13,000 --- ---
<br /> EX1 01/30/13 16.51 31.82 -15.31 No --- ---
<br /> EX1 02/01/13 16.51 --- --- -- 3,100a,d 32,000 --- <400 2,700 19,000 1,100 6,400 --
<br /> EX1 05/03/13 16.51 31.63 -15.12 No 1,900a,d 57,000 <400 2,800 23,000 1,500 8,800
<br /> EX1 08/21/13 16.51 32.84 -16.33 No --- -- --- --- -•- ---
<br /> EX1 08/22/13 16.51 -- --- --- 16,OOOa,d 110,000 --- <500 12,000 43,000 2,300 22,000 ---
<br /> EX1 12/18/13 16.51 31.45 -14.94 No 15,OOOa,d 97,000 <500 6,100 28,000 1,400 17,000
<br /> EX2 07/14/09 16.83 41.20 -24.37 No 740 170,000 <1,200 47,000 69,000 3,400 19,000
<br /> EX2 10/27/09 16.83 41.53 -24.70 No 2,700d 70,000 --- <1,200 22,000 29,000 1,300 7,500 --
<br /> EX2 01/25/10 16.83 39.69 -22.86 No 710d 120,OOOd --- <1,000 35,000 44,000 1,400 9,500
<br /> EX2 04/07/10 16.83 37.81 -20.98 No 820 170,000 <500 50,000 73,000 3,800 24,000 --- ---
<br /> EX2 08/09/10 16.83 37.70 -20.87 No -- -- --- ... ----
<br /> EX2 08/10/10 16.83 -•- --- •.. 890d 150,OOOd <1,000 45,000 71,000 2,900 20,000 --- --
<br /> EX2 10/05/10 16.83 38.45 -21.62 No -•- --- --- -•- --- --- --
<br /> EX2 10/06/10 16.83 --- --- --- 1,500d 280,000 --- <1,000 46,000 67,000 3,300 20,000 --- -
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