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TABLE 2(CONTINUED) <br /> ANALYTICAL RESULTS GROUNDWATER <br /> SHELL SERVICE STATION <br /> 620 WEST CHARTER WAY STOCKTON CALIFORNIA <br /> • {AN resaits in parts-per-miiiion} <br /> Monitoring Date Total Petroleum Aromatic Volatile Organics <br /> Well Collected Hydrocarbons <br /> Gasoline Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> MW 9 03/28/90 110 18 20 21 12 <br /> 07/31/90 FLH FLH FLH FLH FLH <br /> 10/24/90 110 20 25 22 13 <br /> 01/31/91 120 27 26 2 5 15 <br /> 04/26/91 120 21 24 22 15 <br /> 07/23/91 110 18 22 21 1 5 <br /> 10/30/91 220 21 27 26 21 <br /> 01/28/92 200 25 24 27 18 <br /> 04/30/92 160 20 26 3 6 24 <br /> 07/10/92 110 22 24 2 9 17 <br /> 10/09/92 130 18 20 1 9 16 <br /> 02/20/93 290 140 180 4 7 36 <br /> MW-10 08/01/91 0 069 00026 000037 0 00043 < <br /> 10/30/91 < 00033 < < < <br /> 01/28/92 83 00011 000049 000046 < <br /> 04/30/92 061 0 032 0 057 0 011 0 066 <br /> 07/10/92 < < < < < <br /> 10/09/92 < < < < < <br /> 02/19/93 < < < < < <br /> NOTES Not analyzed <br /> FLH Floating Ilqu,id hydrocarbons <br /> 5 = Below Practical Quantitation Reportmg Limits per Tri Reaional Board Staff Recommendations for Preliminary Evaluation and Investigation of <br /> Underground Tank Sites (August 10 1990) (PQL for BTEX=0 0005 ppm TPH as gasoline and diesel.0 05 ppm) <br /> Aegis Environmentai Inc <br /> 91 246/Marcn 30 1993 <br />