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TABLE 2 <br /> 4' <br /> ANALYTICAL RESULTS GROUNDWATER <br /> r/ 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 /> Gasoline Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> MW-1 12/18/89 < < < < < <br /> 03/28/90 < < < < c <br /> 07/31/90 0 130 00013 < < < <br /> 10/24/90 0 300 00022 < < < <br /> 01/31/91 55 0 064 016 0 039 02 <br /> 04/26/91 0 7 0 018 00024 «0 0015 0 017 <br /> 07/23/91 1 3 00044 0 003 0 003 00079 <br /> 10/30/91 097 0 015 <<O 0006 «0 0006 00061 <br /> 01128/92 1 2 «0 0012 00024 00017 00013 <br /> 04/30/92 059 00094 000069 00012 00029 <br /> 07!01192 094 0 022 000041 000066 00045 <br /> 10/09/92 < < < < < <br /> 02/19/93 0 3 00076 0 013 0 0092 0 068 <br /> 05/28/93 < < < < < <br /> 08/27/93 < c < < < <br /> 11/22/93 < c < < c <br /> MW 2 12/18/89 FLH FLH FLH FLH FLH <br /> 03/28/90 FLM 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 FLH FLH FLH FLH FLH <br /> 07/23/91 FLH FLH FLH FLH FLH <br /> 10/30/81 FLH FLH FLH FLH FLH <br /> 01/28192 FLH FLH FLM FLH FLH <br /> 04/30/92 FLH FLH FLH FLH FLH <br /> 07/10/92 FLH FLH FLH FLH FLH <br /> 10109/92 FLH FLH FLH FLH FLH <br /> 02/19/93 FLH FLM FLH FLH FLH <br /> 05/28/93 130 0 800 2 8 0 68 18 <br /> 08/27/93 66 0 360 0 290 < 8 3 <br /> 11/22/93 340 28 43 2 9 30 <br /> i�OTES = Not analyzed <br /> FLH = Floating liquid hydrocarbons <br /> FLH = Skimmer In well (installed October 9 1992) <br /> < = Below Practical QuarltitationReporting Limits per Tri-Regional Board Staff Recommendations for Prehminary Evaluation <br /> and investigation of Underground Tank Sites (August 10 1990) (PQL for BTEX = 0 0005 ppm TPH as gasoline and <br /> diesel = 0 05 ppm ) <br /> << = Below Indicated detection limit labeled in the analytical laboratory reports <br /> Aegrs Envuonrnental Inc <br /> Q1 2461January 12 1994 <br />