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• s s <br /> TABLE 2 (CONTINUED) <br /> ANALYTICAL RESULTS: GROUNDWATER <br /> SHELL SERVICE STATION,6131 PACIFIC AVENUE,STOCKrON,CALIFORNIA <br /> (AD results to parts-per-billion, except as indicated) <br /> Total Aromatic Volatile Organics <br /> Monitoring Date Petroleum Total Total Fecal <br /> Well Collected Hydrocarbons Lead Collform Coliform <br /> (MPN/100ml) (MPN/100ml) <br /> Gasoline benzene Toluene Ethyl- Total <br /> (ppm) benzene Xylenes <br /> MW-3 07/23/90 63 10,000 0 18,000 0 1,800 0 11,000 0 --- 540 33 <br /> 10/09/90 69 7,900 0 12,000 0 1,200 0 9,0000 ASO 002 y2,400 920 <br /> 01/10/90 63 10,000 0 17,000.0 1,200 0 7,200 0 — 16 Pos <br /> 04/09/91 — --- --- — — --- --- --- <br /> 07/17/91 --- --_ --- — — --- — — <br /> 10/08/91 --- — --- --- --- --- --- <br /> 02/26/92** --- -- --- --- -- --_ --- <br /> 05/12/92** --- --- --- — — -- --- — <br /> 07/08/92** — --- --- --- --- --- — — <br /> 11 <br /> NOTES — = Not analyzed <br /> < = Results are less than Practical Quantitation Reporting limits stated In the August 10, 1990, °Tn Regional Board <br /> Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites"(50 ppb for TPH, <br /> 0 5 ppb for BTEX) <br /> MPN/100ml - Most Probable Number(MPN)of bacteria per one Hundred milliliters <br /> << _ Less than the indicated detection limit <br /> = Greater than or equal to <br /> = Positive response for petroleum hydrocarbons,as gasoline,is due to the presence of an unknown hydrocarbon,not gasoline <br /> Data collected by Emcon Associatesof Sacramento,California <br /> MW 3 was not sampled from April 9, 1991,to present due to the presence of floating liquid hydrocarbons <br /> Aegis Environmental Inc <br /> 90-020/October 14 1992 <br />