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TABLE 2 <br /> ANALYTICAL RESULTS' GROUNDWATER <br /> SHELL SERVICE STATION (WIC No 204-7524-0808) <br /> 7910 LOWER SACRAMENTO ROAD, STOCKTON, CALIFORNIA <br /> (All results in parts-per-million) <br /> Monitoring Date Total Petroleum Aromatic Volatile Organics <br /> Well Collected Hydrocarbons <br /> Gasoline Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> MW-3 08/15/89 < < < < < <br /> 05/11/90 c < < < < <br /> 10/11/90 < c < < < <br /> 02/01/91 < < < < < <br /> 05/08/91 < < < < < <br /> 08120191 < < < < < <br /> 11121191 < < < < < <br /> 02120192 < < < < < <br /> 06/12/92 --- — — - — <br /> 08/12/92 < < c < < <br /> 11/05/92 — --- --- — — <br /> 02/19/93 < < < < < <br /> 08/26/93 < < < < < <br /> 02/15/94 < < < < < <br /> 08/16/94 < < < < < <br /> 02/22/95" < < 00009 < 00007 <br /> MW-3D 02119/93 < < < < < <br /> ("Dup") 08/26/93 e < c < < <br /> 02/15/94 < < c < < <br /> 08116/94 < < < < < <br /> NOTES = Below Practical Quantitation Reporting Limits per-rn Regional Board Staff Recommendations for Preliminary Evaluation <br /> _ - arks Investigation of Underground Tank Sites"(August 1019M (PQL for BTE)(-0 0005 ppm TPH as gasoline and diesel=0 05 ppm) <br /> Not sampled due to change from quarterly to semiannually <br /> D Duplicate sample <br /> = Laboratory(NET Ina)reported persistent toluene and xylene in laboratory supplied tnp blanks and nnse water Equipment blank <br /> and laboratory,method blank contained toluene(00007 and 0 00034 respectively)and xylenes(BDL and 0 00048 respectively) <br /> Samples collected through 11/21/91 by Della Environmental Consultants,Inc of Rancho Cordova California <br /> Samples collected from 02r2OM2 through 11!05!92 by EMCON Associates of Sacramento Cakfomra <br /> Samples collected after 11105J93 by Slarve Tach Sevnoes,Inc.of San Jose California <br /> Fugro <br /> 934712311February 1995 <br />