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4L2 <br /> ANALYTICAL RESULTS: GROUNDWATER <br /> 4445 PERSHING AVENUE, STOCKTON, CALIFORNIA <br /> Monitoring Date Total Aromatic Volatile Organics EDB Total Organic Lead Colfform Total/Fecal <br /> Well Petroleum (ppb) Lead (ppm) (MPN1100 m1} <br /> Hydrocarbons (ppm) <br /> Gasoline Benzene Toluene Ethyl- Total <br /> (ppm) (ppm) (ppm) benzene Xylenes <br /> (ppm) (ppm) <br /> MW-40 10106!92 c e < < < — <br /> ("DUP") 10/01183 0 060 00029 c 000082 <br /> 11/22/93 < 00015 c <br /> 02/15194 0 055 0 0005 <br /> NOTES EDB = Ethylene dibnxrrde <br /> a Below Practical Quantdabon Reporting Limits per'rn Regional Board Staff Recornnrendabons for Prehrranary Evaluation and Investigation of <br /> Underground Tank Situ'(August 10 1990)(PQL for BTEX=0 0005 ppm,TPH as gasoline and diesel a 0 05 ppm) <br /> MPN11 Do ml = Most probable number per 100 mtlilders of sample <br /> a Not analyzed <br /> OBS = Obstructed <br /> « = Less than rndrcaled deletlbn hmd/mpn as indicated on laboratory analytical report <br /> O = Duplicate sample <br /> ppm = Parts-per millan <br /> ppb Parts-per billion <br /> Fugro <br /> 89-010/February 1994 <br />