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_. 30-308 Table i Summery of Results Of Ground Water Sampling ' Chevron Service Station 4 9-4275 2905 West Benjamin Holt Drive, Stockton, California Concentrations in Parts per billion (ppb) T E x 1 ,2 1,2 F113 LAB GROUND TPH-G TVG 8 DCEa DC8 WELL DATE OF CASING DEPTH ID SAMPLING/ ELEVATION TO WATER MONITORING WATER ELEVATION MW-1 03/22/89 2.24 16.29 -14.05 30000 NO(3000 4400 1600 2900 5900 ND(20 ND<2 ND000 SAL 3600 1300 1100 2700 ND(50 ND(lO NO(50 S ' MW-1 06/12/89 2.24 16.91 -14.67 20000 4100 460 920 1500 ND(10 ND(10 ND150 CCAS PACE MW-1 09/07/89 2.24 18.38 -16.14 20000 - _ 4200 200 17 1200 -'- --- r PACE MW-1 12/18/89 2.24 17.60 -15.36 17000 6400 580 2200 1200 '-- --- -_ _ PACE MW-1 03/20/90 2.24 17.22 -14.90 13000 4800 410 1300 1200 --- PACT MW-1 07/03/90 `.24 18.04 -15.80 17000 --_ 4000 290 1700 700 --- ,� MW-1 10/19/90 2.24 19.34 -17.10 16000 - - PACE, r` --- $600 270 1700 660 _ ;AL MW-10 10/19/90 2.20 14.94 -17.10 17000 -- 3100 38 950 170 --_ MW-1 01/17191 ..t.24 19.04 -16.H0 10000 - 3200 39 980 170 --- --^ Snl_ MW-10 OL/17/91 :2.24 19.04 -16.80 9800 --` ND(10 ND(10 ND(50 CCAS e MW-2 03/22/89 3.41 17.54 -14.13 9000 ND(3000 750 20 480 730 -14.78 ND<10000 --- 1200 80 710 870 ND(20 ND(20 ND(10- CCAS MW-2 06/12/89 3.41 18'19 --- 1400 90 790 1100 ND(10 ND(20 ND(100 CCAS MW-2D 06/12/89 ?.41 18.19 -14.78 14000 3200 ND(200 1200 800 ND150 ND(50 ND- CCAS MW-2 09/07/89 3.41 19.66 -16.25 14000 ___ - PALE 2500 Nb(25 1300 340 PACE MW-2 12/16/89 3.41 18.85 -15.,14 10000 - 4800 88 2100 1500 - -_-_- PACE MW-2 03/20/90 3.41 18_49 ^15.08 13000 --= 5700 600 1900 1700 _ PACE MW-2 07/03/90 3.41 19.07 -15.66 21000 --- 5700 5000 400 2000 920 --'_ - PACE MW-20 07/03/90 3.41 19.07 -15.66 14000 4400 77 190 340 -' SAL 1114-2 10/19/90 3.41 20_06 ^16.65 11000 ^ MW-2 01/17/91 3.41 20.31 -16.90 16000 --- 5400 6B 1600 280 --- --" --- + 4 ND(0.2 NO(I CCAS s. MW-3 03/22/89 2.40 16..`•1 1 11 NO(500 NO(3000 µD(0.1 ND(0.5 NOCO.1 ND(0.2 ND(0.1 ND(2.0 ND(100 CCAS MW-3 06/12/89 2.40 17.19 -14,79 ND(50 _-^ - Y'' y MW-3 09/07/84 2.40 18.64 -16.24 N0050 --- ND<0.2 NO ND(0.2 NO(0.4 --- N-- N-- PACE -15.38 ND(SO ND(O.5 ND(O.5 N0(0.5 NOt0.5 --^ _ PACE MW-3 12/16/99 2.40 17.5 ND(50 - ND(0.S ND(O.5 ND(O.5 NO(0.5 PACE MW-3 03/20/90 2.40 17.55 -15.31 ___ ND(0.5 ND(0.5 ND(0.5 NO(0.5 --- ___ PACE MW-3 07/03/90 2.40 18.71 -16.31 NUt5D ND(0.5 ND(0.5 ND(0.5 ND(0.5 --- `-- SAL MW-3 10/19/90 2.40 19.63 -17.23 NU(SO --- MW-3 01/17/91 2.40 19.34 -16.94 70• --- ND(0.5 ND(0.5 ND(O.5 NDCO.5 - MW-4 03/22/89 2.91 16.29 -13.48 ND(500 NO(3000 ND<0.2 NDCO.2 ND(O_2 ND!0.4 ND(00.4 ND<S.3 NDC1 CCA11 ND(0.2 ND(1.0 ND(0.2 NDiO.4 MW-4 06/12/89 2.81 16.97 -14.16 ND<1700 -_- 1.7 ND0.0 ND(0.2 ND(0.4 0.9 5.3 ND(1 CCA`• MW-4 09/07/89 2.61 18.35 -15.54 PACE MW-4 12/18/89 2.81 17.80 -14.94 NO(50 ___ ND(0.5 ND(O.5 ND(0.5 ND(0.5 ND(0.5 3.3 PACT. -14.t-9 85 2.9 ND(0.5 CJD<0.5 4.9 NU<0.5 2.3 _-- .*-4 03/20/90 2.81 17.40 ND(O,g NDtO.5 ND(0.5 ND(0.5 ---- --- PACE MW-4 07/03/90 2.61 10.05 -15.24 9.� ,__ PALL ND(O.S 2.0 1.5 NII<0.5 c.AL MW-d& 10/19/90 2.81 19.56 -16.77 73 __ ---.5 NO(0.5 ND(0.5 --- MW-4 01/17/91 2.81 19.19 -16.3a 150• - ND(O.S NO(0 - A f 3 PAO& T ,. T '