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TABLE 1 <br /> GROUNDWATER GAUGING DATA <br /> 14000 East Highway 88 <br /> Lockeford, California <br /> Well Gauging Top of Casing Depth to Groundwater <br /> No. Date Elevation Groundwater Elevation <br /> (Feet) (Feet) (Feet) <br /> MW-1 1/19/95 10021 7596 2425 <br /> 5124195 7540 2481 <br /> MW-2 1/19/95 10047 7651 23 96 <br /> 5124195 79 37 21 10 <br /> MW-3 1/19/95 10052 8692 13 60 <br /> 5/24/95 8650 1402 <br /> MW-4 1119195 98 89 7980 1909 <br /> 5/24/95 8662 1227 <br /> Arbitrary datum of 100 feet is assumed at the southeast corner of underground storage tank concrete pad <br /> TABLE 2 <br /> GROUNDWATER SANMLE ANALYTICAL RESULTS <br /> All Results in Micrapms per Liter (cg/L or ppb) <br /> 14000 tet fligbWay 88 <br /> Loekeford, California <br /> Well No. Date Benzene Toluene Ethyl- Xylenes TPH-as- <br /> Sampled benzene Gasoline <br /> MW1 1119195 200 1,100 160 620 5,200 <br /> 5124195 440 1,900 280 1,100 9,200 <br /> 1/19/95 30 48 5 30 460 <br /> MM2 5/24/95 65 17 10 50 320 <br /> MW3 1/19/95 18 48 13 70 430 <br /> 5/24/95 13 23 1 3 29 250 <br /> 1119/95 23 ND<0 5 ND C O 5 06 100 <br /> MW4 5/24/95 07 ND<0 5 ND<0 5 NDC 0 5 55 <br /> MCLS 1 1000 680 1750 -- <br /> TPH = Total Petroleum Hydrocarbons <br /> ppb — parts per billion <br /> ND - not detected at or above the reported detection limits <br /> MCLS — Maximum Contaminant Levels for California drinking water established as published m"A <br /> Compilation of Water Quality Gerais",State of California Regional Water Quality Control Board- <br /> Central Valley Region,May 1993 <br />