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iTABLE NTINUED) <br /> ANALYTICAL RES GROUNDWATER <br /> 4445 PERSHING AVENUE STOCKTON,CALIFORNIA <br /> Monitoring Date Total Aromatic Volatile Organics EDB Total Lead Organic Coliform Tota1/Fecal <br /> Well Petroleum (ppb) (ppm) Lead (MPN/100 ml) <br /> Hydrocarbons (ppm) <br /> Gasoline Benzene Toluene Ethyl Total <br /> (ppm) (ppm) (ppm) benzene Xylenes <br /> (PPM) (Ppm) <br /> MW 3 07/23/90 < < < < < «0 01 <br /> 10/09/90 < < < < < «0 01 <<1 0 <br /> 01/09/91 < < < < < «0 01 - 51 <br /> 04/09/91 < < < < < «0 01 - <c1 0 <br /> 07/17/91 015 < < < < «0 01 <<1 0 — <br /> 10/08/91 < < < < < «0 01 0 008 <br /> 01/21/92 < < < < < «0 01 0 012 <br /> 04/21/92 < < < < < <<002 - <br /> 07/13/92 < < < < < <br /> 10/08/92 < < < < < <br /> 01/11/93 OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS <br /> 04/28/93 0 160 < < < 000063 <br /> MW 3D 04/28/93 0 160 < < < < _ <br /> ("DUP } <br /> MW 4 01121/92 Oil 00012 < 00012 000085 «0 01 0 012 <br /> 04/21/92 < < < < < «0 02 0 005 <br /> 07/13/92 < < < < < «0 005 <br /> 10/08/92 < < < < < - 0 012 <br /> 01/11/93 0 230 0 057 0 012 00013 00087 «0 005 <br /> 04/28/93 0 079 00036 < 00030 00062 <br /> MW 4D 10/08/92 < < < < <br /> ("X Dup') <br /> NOTES EDB Ethylene dibromide <br /> < = Below Practical Quanutation Reporting Limits per Tri Regional Board Stafi Recommendations for Preli mnary Evaluation and Investigation of <br /> Underground Tank Sites (August 10 1990)(PQL for BTEX=0 0005 ppm TPH as gasoline and diesel=0 05 ppm y <br /> MPNr100 ml = Most probable number per 100 mlilditers of sample <br /> 085 - Obstructed <br /> = Not analyzed <br /> < = Less than indicated d,tection hmit/mpn as indicated on laboratory analytical report <br /> D Duplicate sample <br /> ppm Parts per million <br /> ppb = Parts per billion <br /> Aegis Environmental Inc <br /> 89 016/June 7 1993 <br />