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i • • <br /> TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> Quik Stop Station No 039 <br /> 2285 East Fremont Street <br /> Stockton, California <br /> total Depth to IOC GW <br /> Well Sample TPHmo TPHg benzene toluene ethylbenzene xylenes MTBE GW Elevation Elevation Field <br /> Number Date b b b b b b (ppb) (feet) feet msl feet msl Comments <br /> MW-1 12/15/99 <100 <50 <0 50 <0 50 2 7 <0 50 <5 0 4453 2071 -23 82 no odor/no sheen <br /> screened 05/19/00 <100 <50 <0 50 <0 50 <0 50 <0 50 <5 0 41 19 -2048 no odor/no she en <br /> interval 08/31/00 <100 60 <0 50 <0 50 <0 50 <0 50 <5 0 4435 -23 64 no odor 1 no shLLn <br /> 40-60' <br /> MW-2 12/15/99 na 610 <0 50 <0 50 <0 50 050 <5 0 4541 21 76 -23 65 no odor/no sheen <br /> screened 05/19/00 na 300 <0 50 <0 50 <0 50 <0 50 <5 0 42 13 -2037 no odor/no sheen <br /> I <br /> interval 08/31/00 na 180 <0 50 <0 50 <0 50 <0 50 <5 0 4579 -2403 no odor/no,hLLII <br /> 40-60' <br /> 'v1 W-3 12/15/99 na 360 <0 50 <0 50 <0 50 20 <5 0 4408 2038 -2370 no odor/no,lu.c.n <br /> screened 05/19/00 na 710 <0 50 <0 50 <0 50 096 <5 0 4073 -20 35 no odor/no shc.c.n <br /> interval 08/31/00 na 480 <0 50 <0 50 <0 50 <0 50 <5 0 4438 -2400 no odor/no shLLn <br /> 40-60' <br /> Notes TPHmo=total petroleum hydrocarbons as motor oil ppb=part,per billion <br /> TPHg=total petroleum hydrocarbons as gasoline <=less than indicated laboratory reporting limit <br /> M ME=methyl tert-butyl ether na=not analyzed <br /> GW T groundwater <br /> TOC=top of easing <br /> I <br /> 4 Project No 7039 41 Page 1 of 1 HORIZON ENVIRONMENTAL INC <br />