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in8 <br /> Groundwater Monitoring And Analytical Results <br /> Chevron Service Station#9-0557 <br /> 139 South Center Street <br /> Vertical Measurements are in feet. Stockton,California Analytical results are in parts per billion (ppb) <br /> Well Ground Depth <br /> DA'T'E Head Water To Notes TPH- Benzene Toluene Ethyl- Xylenes MTBE Fecal � <br /> Elev. Elev. Water Gasoline Benzene Coliform <br /> TRIP BLANK(cont) <br /> 05/20/97 -- - -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 09/02/97 -- -- -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 11/24/97 -- -- - <50 <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 02/11/98 - -- -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 06/09/98 - -- -- <50 <0.5 <0.5 <0.5 < 5 <br /> � 0.. <2.5 <br /> 07/30/98 - - -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 11/10/98 - - -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 02/17/99 -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 05/18/99 -- -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 08/30/99 -- -- -- <50 <0.5 <0.5 <0.5 <0.5 <5.0 <br /> 12/02/99 -- -- -- <50 <0.5 <0.5 <0.5 <0.5 <5.0 <br /> 02/02/00 -- -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 -- <br /> 05/17/00 -- -- -- •- <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 -- <br /> EXPLANATIONS: <br /> Groundwater monitoring data and laboratory analytical results prior to May 17,2000,were compiled from reports prepared by Blaine Tech Services,Inc. <br /> TPH=Total Petroleum Hydrocarbons <br /> MTBE=Methyl tertiary butyl ether <br /> ND=Not Detected <br /> =Not Measured/Not Analyzed <br /> ' Fecal coliforms measured in organisms per 100 milliliters(ml). <br /> z Laboratory report indicates unidentified hydrocarbons C6-C12. <br /> 3 Laboratory report indicates weathered gasoline C6-C12. <br /> I <br /> 9-0557.xls/##386843 14 <br /> As of 05/17/00 <br />