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' TABLE 2 (CONTINUED) <br />' ANALYTICAL RESULTS GROUNDWATER <br /> SHELL SEWCE STATION <br /> 620 WEST CHARTM WAY, STOCKTON,CALIFORNIA <br />' QUI results in parts-per-million) <br /> Monitoring Date Total Petroleum Aromatic Volatile Organics <br /> Well Collected Hydrocarbons <br />' Gasoline Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> MWA 12/18/89 25 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 FLH FLH FLH <br /> 04/26/91 FLH FLH FLH FLH FLH <br /> 07/23/91 FLH 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 /> 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 /> . 01/31/91 140 11 52 19 74 <br /> 04/26/91 67 30 0 050 018 Oil <br /> 07/23/91 22 89 09 069 09 <br /> 10/30/91 19 38 023 027 050 <br /> 01/28/92 34 92 044 083 12 <br /> 04/30/92 23 81 035 076 13 <br /> MW-6 01/10/90 < < < < < <br /> 03/28/90 < < < < < <br /> 07/31/90 < < < < < <br /> 10/24/90 < < < < < <br /> 01/31/91 < < < < < <br /> 04/26/91 < < < < < <br /> 07/23/91 <<O 12 <<00011 <<0 0087 <<0 0029 < <0 018 <br /> 10/30/91 < < < < < <br /> 01/28/92 < < < < < <br /> 04/30/92 < 000040 < < < <br /> INOTES = Not analyzed <br /> FLH = Floating liquid hydrocarbons <br /> < = Below Practical Quantitation Reporting Limits per 'Tri-Regional Board Staff Recommendations for Preliminary <br /> Evaluation and Investigation of Underground Tank Sites" (August 10, 1990) (PQL for BTEX = 0 0005 ppm,TPM as <br /> gasoline and diesel = 0 05 ppm) <br /> << = Below the indicated detection limit labeled in the analytical laboratory results reports <br /> NA = Not applicable <br /> NS Not sampled <br /> NR Not requested <br /> Aegis Environmental Inc <br /> August 20 1992 <br /> I <br />