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TA112 , <br /> ANALYTICAL RESULTS GROUNDWATER <br /> SHELL SERVICE STATION (WIC No 204-7525-0104) <br /> 6131 PACIFIC AVENUE, STOCKTON, CALIFORNIA <br /> (parts-per-million) <br /> Total Aromatic Volatile Organics <br /> Monitoring Date Petroleum Total Total Fecal <br /> Well Collected Hydrocarbons lead Coliform Colfform <br /> Gasoline Benzene Toluene Ethyl Total (MPN/100mi) (MPNI100ml) <br /> benzene Xylenes <br /> MW-2 07£23190 1 9 0 044 0 042 00071 0 021 --- 33 «2 <br /> 10/09/90 0 570 0 078 0 043 < <br /> 01/10/90 1 2 036 0 075 < 0 027 «0 002 21 g <br /> 0 053 -�- «2 2 Neg <br /> 04/09/91 45 12 01 0012 0210 – 11 11 <br /> 07/17/91 72 36 0 440 0 140 0 710 --- >23 >23 <br /> 10/08/91 100 76 0 350 0 260 0 600 --- 120 120 <br /> 02/26/92 170 74 0 220 0 320 13 -- «2 ­2 <br /> 05/12/92 0 071 0 026 < 000085 00024 --- <<1 «3 8 <br /> 07/08/92 4 9 16 < 0 060 0 210 --- <<3 8 <<3 8 <br /> 10/15/92 2 5 0 094 0 003 00042 00094 - «3 8 «3 8 <br /> 01/11/93 0 290 0 028 < 00063 < -- «2 0 — <br /> 04/28/93 0 790 0 030 00018 00055 0 003 – — _ <br /> 08/26/93 0 390 00096 < < < __ w <br /> 11/22/93 0 370` 00035 < < 00014 <br /> 02/15/94 0 790 0 035 «0 002 «0 002 «0 002 <br /> 05/10194 0 78 00096 < < < - <br /> 08/16/94 074 0015 00013 0001 00018 -- _ <br /> 11/17/94 043 0 012 00018 < < -- — <br /> MW-2D 07/08/92 5 0 1 7 < 0 061 0 230 -- — _ <br /> ("Dup") 11/22/93 0 330' 00054 < < 000095 <br /> 02/15/94 0 720 0 033 <br /> NOTES = Not analyzed <br /> < = Less than Practical Quantrtabon Reporting Irmds stated in the August 10 1990 Tn Regional Board <br /> Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sties"(0 050 ppm for TPH <br /> 0 000$ppm for BTEX) <br /> MPN1100ml = Most Probable Number(MPN)of bacteria per one hundred milliliters <br /> = Less than the indicated detection limit <br /> = Greater than or equal to <br /> Positive response for petroleum hydrocarbons as gasoline is due to the presence of an unknown hydrocarbon not gasoline <br /> D = Duplicate sample <br /> Samples collected prior to July 21 1992 by Aegis Environmental Inc of Roseville California <br /> Samples collected from July 27 9irough October 15 1992 by EMCON Associates of Sacramento Calf nia <br /> Samples collected after October 15 1992 by Blame Tech Services Inc of San Jose California <br /> Fugro <br /> 90-020/November 1994 <br />