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I <br /> i <br /> Table 1 <br /> HISTORICAL GROUNDWATER ANALYTICAL RESULTS AND MONITORING DATA <br /> CHEVRON SERVICE STATION 9-0557 <br /> 139 SOUTH CENTER STREET,STOCKTON,CALIFORNIA <br /> ELEVATION' BENZENE .TOLUENE BENZENE XYLENES . ..TPH-G FECAL..:. D7W SPT WTE <br /> DATE: b b`: COUFOiI'' toe a4 <br /> MW_1 03/08/91 250 13 62 471,400 -- 43.89 0.00 -32,72 <br /> 11.17 06/27/91 31 3,1 18 8.4 1,800 ND 44.17 0.00: -33.04 <br /> 09/12/91 40 6.6 8.6 11.0 1,700 - - 44.57 0.00 -33.40 <br /> I <br /> 12/06/91 46 ND' ND: _ 12.0 1,70 ' - 44:80 0.00 -33.63' <br /> 04103/92 67 8.3 9.6 14 1,900 140 43.45 0.00 -32.28 <br /> 07/10/92 430. 1,800:' 410 1.600 17,000: X,2.2" 44.68 0.00 x:33 51. <br /> 11/10/92 160 7.4 11 18 1,900 -- 46.39 0.00 -35.22 <br /> 02116193. 570' 01 24 .. : 9 9 0 $,400. 23 44.50 0. 00 33.33 <br /> 05/17/93 230 19 19 33 4,800 X23 42.10 0.00 -30.93 <br /> MW-2 03/08/91 140 9.0 7 33 290 -- 44.61 0.00 -32.85 <br /> 11.76 06127/91 140 „ 8-6. 1.6 - 32 1.800 . NO 44:88 0 D0 33:12; <br /> 09/12/91 140 7.8 6.7 27 2.200 - 45.33 0.00 -33.57 <br /> 12/06/91 190: 6.2'' S.7 39, 2,100 -- 45..49 0,W:. �33.73 <br /> 04/03/92 430 16 6.8 57 2,500 40 44.20 0.00 -32.44 <br /> 07/10/92 410 510. 210 830 0.000 <2.2". 45:94 D.00 33.68; <br /> 11/10/92 310 12 34 35 2.300 -- 47.05 0.00 -35.29 <br /> 02116/93 370 12 13 <br /> 2S 6,800; .3:6 "44':42 0.00' "32.66: <br /> 05/17/93 310 4 11 120 3,800 9.2 42.88 0.00 -31.12 <br /> MW-3 03/08/91 0.5 ND NO NO NO -- 44.28 0.00 -32.50 <br /> 11.78 06/27191 ND ND: ND 2;5' 130 - 44.01 .000:: :-=32.83: <br /> 09/12/91 NO ND NO 0.5 82 -- 44.98 0.00 -33.20 <br /> 12106191 . ND NO NO NO' *85 -- 45:09 0.00. ­W.3.1 <br /> 18 04/03/92 ND NO NO NO NO 43.79 0.00 -32.01 <br /> 07/10/92 1.1 ND : NO 2.5 120 -- 45.09 0.00 -33.31 <br /> 11/10/92 0.5 NO 0.6 1.7 104 -- 46.70 0.00 -34.92 <br /> 02/16/93 ND ND ND 2 54 - 44.69 .0.00 32.91: <br /> 05/17/93 0.8 2 1 10 84 -- 42.48 0.00 -30.70 <br /> MW--4 03/08/91 ND ND NO NO NO - 44.75 0.00 -32.45 <br /> 12.30 06127/91 ND ND ND NO NO - 45.08 0.00 -32.78' <br /> 09/12/91 NO NO NO NO NO - 45.47 0.00 -33.17 <br /> 12/06191 NO ND ND NO ND - 45.57; . 4.00 -33.27 <br /> 04/03/92 NO ND ND ND NO -- 44.28 0.00 -.31.98 <br /> 07/10/92 ND ND ND ND ND - 45.54 .0.00 33.24 <br /> 11/10/92 ND ND 2.0 6.9 NO -- 47.16 0.00 -34.86 <br /> 02/16/93 NO NO ND NO NO -- 45.18 0.00 =3288 <br /> 05/17/93 8 24 13 81 430 - 42.94 0.00 -30.64 <br /> MW-5 <br /> 12.09 11110/92 ND ND ND ND ND - 47.65 0.00 -35.56 <br /> 02/16/93 NO ND ND 0.7 NO - 45.97 0.00 -33.88 <br /> 05 17 3 12 33 1$ 110 600 -- 43.6fi 0.00 -31.57 <br /> EXPLANATION <br /> All elevations are given as feet above mean sea level <br /> TPH-G =Total petroleum hydrocarbons-as-gasoline <br /> DTW= Depth to water <br /> SPT= Separate-phase hydrocarbon thickness <br /> WTE=Water table elevation <br /> TOC = Top of casing,loot above mean sea level <br /> ppb= parts per billion <br /> Fecal coliforms measured in organisms per 100 mt <br /> NO = Not detected at or above the minimum quantitation limit <br /> -- Not analysed <br /> " Non-standard gasoline pattern in chromatogram <br /> Results listed reflecl Fecal Coliform analysis only. Laboratory analysis lists total coliform and fecal coliform. <br /> Note: See laborato re orfs for minimum uantitation limits. <br /> GlWTA81.4VK7 <br /> ^JL GROUNDWATER <br /> _�,� j TECHNOLOGY <br />