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TABLE 2 <br /> i ANALYTICAL RESULTS GROUNDWATER <br /> SHELL SERVICE STATION <br /> 620 WEST CHARTER WAY, STOCKTON, CALIFORNIA <br /> (All results in parts-per-million) <br /> Monitoring Date Total Petroleum Aromatic Volatile Organics <br /> Well Collected Hydrocarbons <br /> Tota <br /> Gasoline Benzene Toluene Ethyl- l <br /> benzene Xylenes <br /> MW-4 12/18/89 2 5 0 025 0 004 < 0 070 <br /> 03/28/90 100 0 290 0 270 00015 0 290 <br /> 07/31/90 FLH FLH FLH FLH FLH <br /> 10/24/90 FLH FLH FLH FLH FLH <br /> 01/31/91 FLH FLH FLM FLH FLH <br /> 04/26/91 FLH FLH FLH FLH FLH <br /> 07123M FLM FLH FLH FLH FLH <br /> 10/30/91 FLH FLH FLH FLH FLH <br /> 01/28/92 FLH FLH FLH FLH FLH <br /> 04/30/92 FLH FLH FLH FLH FLH <br /> 07/10/92 FLH FLH FLH FLH FLH <br /> 10/09/92 FLH' FLH* FLH' FLH* FLH" <br /> 02/19/93 FLH FLH FLH FLH FLH <br /> 05/28/93 81 0 990 3 9 1 3 13 <br /> 08/27/93 9 0 0 220 0 049 «0 025 1 0 <br /> 111.22193 490 1 1 0 680 3 6 18 <br /> 02/15/94 18 037 028 0 37 2 3 <br /> 05/10/94 15 017 014 02 1 4 <br /> 08/16/94 18 0 5 012 019 084 <br />. 11/17/94 40 13 067 053 22 <br /> 02116/95" 18 32 1 0 045 1 6 <br /> MW-5 01/10/90 0 100 < < < 000051 <br /> 03/28/90 1 6 00033 0 012 00012 0 019 <br /> 07/31/90 1 4 0 150 0 020 0 043 0 039 <br /> 10/24/90 086 0 220 0 022 0 038 0 036 <br /> 01/31191 140 1 1 52 1 9 7 4 <br /> 04/26/91 5 7 3 0 0 050 018 Oil <br /> 07/23/91 22 8 9 09 069 0 9 <br /> 10/30/91 19 38 023 027 0 50 <br /> 01/28192 34 92 044 0 83 1 2 <br /> 04/30/92 23 81 035 076 1 3 <br /> 07/10/92 25 92 1 1 1 0 1 9 <br /> 10/09/92 16 33 0 36 «0 05 2 3 <br /> 02/19/93 017 00074 000061 00027 00035 <br /> 05/28/93 000086 c < 00024 <br /> 08/27/93 < < < c < <br /> 11/22193 < < < < < <br /> 02/15/94 < < c c < <br /> 05/10/94 < c c c c <br /> 08/16/94 < < c c c <br /> 11/17/94 < < < < < <br /> 02/16195' < < 00005 < 00012 <br /> NOTES - = Not analyzed <br /> FLH - Floating liquid hydrocarbons <br />. FLH• = Slammer in well(installed October 9 1992) <br /> c Below Pracbca!Quantitation Reporting Limits per"Tri-Regional Board Staff Recommendations for Preliminary Evaluation and <br /> i rwestigation of Underground Tank Sites"(August 10 19 (PQL for STEX=0 0005 ppm TPH as gasoline and diesel=0 05 ppm) <br /> « = Below indicted detection limit labeled in the analyteel laboratory reports. <br /> 0 = Oupkate sample <br /> NS = Not sampled <br /> = Laboratory reported persistent low concentrations of toluene and xylenes in their trip blanks and rinse water which may be affecbng <br /> analytical results. <br /> Fugro <br /> 93471248/February 1995 <br />