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1& 2 • r <br /> ANALYTICAL RESULTS GROUNDWATER ' <br /> 4445 PERSHING AVENUE, STOCKTON, CALIFORNIA <br /> Monitoring Date Total Aromatic Volatile Organics EDB Total Lead Organic Cohlbrm <br /> Well Petroleum (ppb) (ppm) Lead Total/Fecal <br /> Hydrocarbons <br /> (ppm) (MPN1100 ml) <br /> Gasoline Benzene Toluene Ethyl- Total <br /> (ppm) (ppm) (ppm) benzene Xylenes <br /> (Ppm) (Ppm) <br /> MW-2 07/23/90 < < < < < «0 01 << w _ <br /> 10 <br /> 10/09/90 < < < < < «0 01 --- <<1 0 --- <br /> 01/09/91 < < < < < «0 01 — -- — 16 <br /> 04/09/91 < < < < < «0 01 -- <<1 0 69 69 <br /> 07/17/91 006 < < < < «0 01 <<1 0 -- >23 >23 <br /> 101081`91 006 < < < < «0 01 0 005 — 69 69 <br /> 01/21/92 < < < < < «0 01 0 011 -- — <38 <br /> 04/21/92 < < < < < «0 02 — --- — 19 <br /> 07/13/92 < < < < < — __ --- — <38 <br /> 10108!92 < < < < < — — __ — «2 0 <br /> 01/11/93 < < < < < <br /> 04/28/93 < < < < < - <br /> 08l26193 0 051 00034 000069 00029 00061 --- --- --- - <br /> 10/01/93 < 000095 00024 < 00032 – -- --- —11/22193 < < < < < ___ --- <br /> 02/15t94 < < < < < <br /> 05110/94 < < < < < _-- -- _- — — <br /> 08/16/94 < < < < < ___ <br /> 11/10/94 < < < < < <br /> NOTES EDB = Ethylene dibromide <br /> < = Below Practical Quantitabon Reporting Limits per Tri Regional Board Staff Recommendations for Preliminary Evaluation and Investigation of <br /> Underground Tank Sites (August 10 1980)(PQL tot BTEX=0 0005 ppm TPH as gasoline and diesel=0 05 ppm) <br /> MPN11oo ml = Most probable number per 100 milliliters of sample <br /> = Not analyzed <br /> OBS = Obstructed <br /> « = Less than indicated detection lim;ttmpn as indicated on laboratory analytical report <br /> D = Duplicate sample <br /> ppm = Parts-per million <br /> ppb = Parts-per billion <br /> Fugro <br /> 69-016/November 1994 <br />