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ANALYTICAL RESU GROUNDWATER <br /> 4445 PERSHING AVENUE STOCKTON CALIFORNIA <br /> (Results In parts-per million) <br /> Monitoring Well Date Total Petroleum Aromatic Volatile Organics EDB Total Lead Organic Lead CoMorm Total/Fecal <br /> Hydrocarbons (MPN/100 ml) <br /> Gasoline Benzene Toluene Ethylbenzene Total Xylenes <br /> MW 1 07/23/90 < < < < < << << <br /> 10109190 < < < < < << - << <br /> 01/09/91 < < < < < << >16 <br /> 04/09/91 < < < < < << << <br /> 07/17/91 < < < < < << 0 005 <br /> 10/08/91 < < < < < << << -- <br /> 01121/92 <br /> - <br /> 01121/92 < < < < < << 0 030 <br /> 04/21/92 < < < < < <<0 00002 - - <br /> MW 2 07/23/90 < < < < < << <br /> 10109/90 < < < < < << - <br /> 01/09/91 < < < < < << 16 <br /> 04/09/91 < < < < < << << 69 69 <br /> 07/17/91 0 060 < < < < <c << >23 >23 <br /> 10/08/91 0 060 < < < < « 0 005 69 6 9 <br /> 01/21/92 < < < < < << 0 011 <3 6 <br /> 04/21/92 < < < < < <<0 00002 19 <br /> MW 3 07/23/90 < < < < < <br /> 10/09/90 < < < < < << << <br /> 01/09/91 < < < < < << 51 <br /> 04/09/91 < < < < < << << <br /> 07/17/91 0 080 < 0 001 < < << << -- <br /> 10/08/91 0 150 < < < < << 0 008 <br /> 01/21/92 < < < < < << 0012 <br /> 04/21/92 < < < < < <<0 00002 -- <br /> MW 4 01/21/92 011 101112 < 10012 1101011 << 0 012 <br /> 04/21/92 < < < < < «0 00002 0 005 <br /> NOTES EDB = Ethylene dibromide <br /> < - Below Practical Quantitation Reporting Limits per'Tri Regional Board Staff Recommendationsfor Preliminary Evaluation and Investigation of Underground Tank Sites <br /> (August 10 1990)(PQL for BTEX =0 0005 ppm TPH as gasoiine and diesel-0 05 ppm <br /> MPN/100 ml = Most probable number per 100 milliliters of sample <br /> Not anaEyzed <br /> << - Less than indicated detection limitimpn as indicated on laboratory analytical report <br /> Aegis Fnvironmental Inc <br /> June 25 1992 <br />