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TABLE 2(CONTINUED) <br /> ANALYTICAL RESULTS. GROUNDWATER <br /> R <br /> SHELL SERVICE STATION <br /> 620 WEST CHARTER WAY STDCKTM CAL(FORMA <br /> (M res+lls In perts-p 4mMon) <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 25 25 15 <br /> 04/26/91 120 21 24 22 15 <br /> 07/23/91 110 18 22 21 15 <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 36 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 47 36 <br /> 05/28/93 120 39 26 1 1 12 <br /> MW-10 <br /> 08/01/91 0 069 00026 0 00037 000043 < <br /> 10/30/91 < 0 0033 < < < <br /> 01/28/92 83 00011 000049 0 00046 < <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 /> 05/28/93 < < < < < <br /> NOTES — - Not analyzed <br /> FLH Floating liquid hydrocarbons <br /> < Below Practical Quantitation Reporting Umits per'Tri-Regional Board Staff Recommendations for PreliMLnary Evaluation and Investigation of <br /> Underground Tank Sites (August 10 1990) (PQL for STEX-0 0005 ppm TPH as gasoline and diesel-0 05 ppm) <br /> i <br /> Aegis Environmental Inc <br /> 91-246/August3 1993 <br />