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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 /> (Ail results In parts-per-milfion) <br /> FFMonitoring Date Total Petroleum Aromatic Volatile Organics <br /> Well Collected Hydrocarbons <br /> Gasoline Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> MW-1 08/15/89 < 00006 < < < <br /> 05/11190 < 00011 < c < <br /> 10/11/90 < < < c e <br /> 02/01/91 < e c e e <br /> 05/08/91 < c < < < <br /> 08/20/91 < < < < < <br /> 11/21/91 < < < < < <br /> 02120192 < < < < < <br /> 06/12/92 - <br /> 08/12/92 < < c < < <br /> 11/05/92 -- <br /> 02/19/93 < e e c < <br /> 08/26/93 < < c < < <br /> 02/15/94 < < c < < <br /> 08/16/94 < < < < < <br /> 02/22195' < < < < < <br /> MW-2 08/15/89 < < < c < <br /> 05/11/90 < < c < < <br /> 10/11/90 < < c c < <br /> 02/01/91 < c < < < <br /> 05/08/91c < < c <br /> 08/20/91 < < < < c <br /> 11/21/91 < C C < < <br /> 02/20/92 < < < < < <br /> 06/12/92 < < < c 00019 <br /> 08/12/92 < C C < < <br /> 11/05/92 c < c < < <br /> 02/19/93 c c < c < <br /> 08/26/93 < < < < < <br /> 02/15/94 < < < < < <br /> 08/16/94 < c < < < <br /> 02/22/95` < < 00009 < < <br /> MW 2D 02/22195' < < 0 0011 < < <br /> Dup") <br /> NOTES < - Below practical Ouantrtabon Reporting Limits per-rn Regional Board Staff Recommendabons for P ehmmary Evaluatwn <br /> - and Investigation of Underground Tank Sdes"(August 10,1960) (PQL far BTEX=0 0005 ppm,TPH,as gasoline and diesel=0 05 ppm) <br /> Not sampled due to change from quarterly to senuannually <br /> D = Duplicate sample <br /> Laboratory(NET Inc.)reported persistent toluene and xylene in laboratory supplied trip blanks and nnse water Equipment blank <br /> and laboratory method blank contained toluene(0 0007 and 0 00034 respectively)and xylenes(BDL and 0 00048 respectively) <br /> Samples collected through 11/21M by Delta Errvuonmental Consultants Inc of Rancho Cordova California <br /> Samples collected from 02/20/92 through 11105/92 by EMCON Assoaates of Sacramento California <br /> Samples collected after 11105W by Blaine Tech Sevrces,Inc,of San,lose California <br /> Fugro <br /> 93471231/February 1995 <br />