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TABLE 2 <br /> ANALYTICAL RESULTS- GROUNDWATER <br /> SHELL SERVICE STATION <br />• 620 WEST CHARTER WAY, STOCKTON, CALIFORNIA <br /> (All results to 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-6 01/10/90 < c < c < <br /> 03/28/90 < < c < c <br /> 07)31/90 < < e e < <br /> 10/24/90 < < < e < <br /> 01/31/91 < < < c c <br /> 04/26/91 < < < < < <br /> 07/23/91 «0 12 «0 0011 «0 0087 «0 0029 <<0018 <br /> 10130!91 < < < < c <br /> 01/28/92 < < < < < <br /> 04/30/92 < 000040 c < < <br /> 07/10/92 < < < < < <br /> 101g9/92 < < 0 067 < 00014 <br /> 02/20/93 < < < < < <br /> 05/28/93 < c < c < <br /> 08/27/93 < < < < c <br /> 11/22/93 < < < c < <br /> 02/15/94 < < < < < <br /> 05/10/94 < < < < < <br /> 08/16/94 < < < < < <br /> 11/17/94 < < < < < <br /> 02/16/95* < < c < < <br /> MW-6D 07/10/92 < < < < < <br /> (DUP-1) 02/19/93 < < < < < <br /> 05/28/93 < < < < < <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 /> 0723/91 FLH FLH FLH FLH FLH <br /> 10/30/91 130 25 64 16 10 <br /> 0128192 FLH FLH FLH FLH FLH <br /> 04/30/92 FLH FLH FLM FLH FLH <br /> 07/10/92 14 022 14 054 26 <br /> 10/09/92 FLH* FLH' FLH* FLH* FLH` <br /> 02/19/93 43 036 1 4 1 0 5 3 <br /> 05/28/93 11 0 140 0 210 0 290 1 1 <br /> 08/27/93 2 9 0 063 0 060 0 067 0 280 <br /> 11/22/93 16 0 140 0 150 0 270 0 560 <br /> 02/15/94 49 0 71 0 4 085 1 5 <br /> 05/10/94 65 033 0 061 024 042 <br /> 08/16/94 14 1 0 012 048 036 <br /> 11/17/94 86 048 012 033 049 <br /> 02116195* 8 0 1 5 Oil 063 042 <br /> NOTES = Not analyzed <br /> FLH - Floating liquid hydrocarbons <br /> FLH* = Skimmer in well(nstalled October 9 19 <br />. `< _ Below Practical QuanbtaWn Reporting Limits per-in Regional Board Staff Recommendations for Preliminary Evaluatwn and <br /> lnvesbgatron of Underground Tank Sites"(August 10 1990) (POL for BTEX=0 0005 ppm TPH as gasoline and diesel=0 05 ppm) <br /> Below indicated detection unit labeled in the analytical laboratory reports. <br /> D - Duplicate sample <br /> NS = Not sampled <br /> • = Labonatory reported perastent low ooncentrations of toluene and xylenes in their trip blanks and nnse water which may be affecting <br /> analytical results, <br /> Fugro <br /> OW 124&February 1995 <br />