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TABLE 2 (CONTINUED) <br /> ANALYTICAL RESULTS. GROUNDWATER <br /> SHELL SERVICE STATION <br /> 620 WEST CHARTER WAY STOCKTON CALIFORNIA <br /> (AN results in parts-per-m>fllon) <br /> Monitoring Date Total Petroleum Aromatic Volatile Organics <br /> Well Collected Hydrocarbons <br /> Gasoline Benzene TolueneEthyl- Total <br /> benzene Xylenes <br /> MW 7 01/10/90 FLH FLH FLH FLH FLH <br /> 03/28/90 FLH FLH FLH FLH FLH <br /> 07/31/90 FLH FLH FLH FLH FLH <br /> 10/24/90 FLH FLH FLH FLH FLH <br /> 01/31/91 FLH FLH FLH FLH FLH <br /> 04/26/91 54 4 5 73 1 7 74 <br /> 07/23/91 FLH FLH FLH FLH FLH <br /> 10/30/91 130 25 6 4 16 10 <br /> 01/28/92 FLH FLH FLH FLH FLH <br /> 04/30/92 FLH FLH FLH FLH FLH <br /> 07/10/92 14 022 1 4 054 26 <br /> 10/09/92 FLH* FLH* FLH* FLH* FLH* <br /> 02/19/93 43 036 1 4 1 0 53 <br /> MW-8 03/28/90 86 27 0 250 0 030 0 520 <br /> 07/31/90 26 84 0 740 D 200 0 400 <br /> 10/24/90 16 68 0 180 0 140 0 170 <br /> 01/31/91 17 8 5 037 021 045 <br /> 04/26/91 15 63 026 015 039 <br /> 07/23/91 15 64 0 3 015 035 <br /> 10/30/91 21 51 021 0 097 012 <br /> 01/28/92 17 50 012 014 026 <br /> 04/30/92 13 4 6 0 092 0 13 010 <br /> 07/10/92 7 2 3 5 < 0 097 < <br /> 10/09/92 29 2 6 37 < 5 7 <br /> 02/20/93 6 6 1 2 0 081 0 069 065 <br /> MW-8D 10/09/92 27 22 3 < 5 8 <br /> (X-Dup ) <br /> NOTES FLH = Floating liquid hydrocarbons <br /> = Below Practical Quantitation Reporting Limits per Tri Regional Board Staff Recommendations for Preliminary Evaluation and Investigation of <br /> Underground Tank Saes (August 10 1990) (PQL for 9TEX=0 0005 ppm TPH as gasoline and doesel-0 O5 ppm) <br /> NS = Not sampled <br /> FLH" = Skimmer in well(installed on October 9 1992) <br /> 0 = Duplicate sampfe <br /> ID <br /> Aegis Envirormentak Inc <br /> 91 246/March 30 1993 <br />