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*BLE 2 <br /> ANALYTICAL RESULTS GROUNDWATER ' r <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 Collform Collform <br /> (Mi'NI100mq (MPNI100mf) <br /> Gasoline Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> MW-2 07/23190 19 0 044 0 042 00071 0 021 --- 33 «2 <br /> 10/09/90 0 570 0 076 0 043 < 0 027 «0 002 21 «2 <br /> 01/10/90 12 035 0 075 < 0 053 --- <<2 2 Neg <br /> 04/09/91 4 5 1 2 01 0 012 0 210 --- 1 1 1 1 <br /> 07/17/91 72 3 6 0 440 0140 0 710 — >23 >23 <br /> 10!081911 100 7 6 0 350 0 260 0 600 --- 120 120 <br /> 02/26412 170 7 4 0 220 0 320 1 3 — «2 <<2 <br /> 05112102 0 071 0 026 < 000085 00024 --- «1 «3 8 <br /> 07/08412 4 9 1 6 < 0 060 0 210 --- «3 8 «3 8 <br /> 10/151£12 2 5 0 094 0 003 00042 00094 --- <<3 8 «3 8 <br /> 0111 I NG 0 290 0 028 < 00063 < — «2 0 --- <br /> 04/28413 0 790 0 030 00018 00055 0 003 — --- -- <br /> 08/26/GI3 0 390 00096 < < < --- -_ <br /> 111122193 0 370` 00035 < < 00014 — — — <br /> 02/15AI4 0 790 0 035 «0 002 «0 002 «0 002 — --- --- <br /> MW-2D 071081:12 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 < < c <br /> NOTES = Not analyzed <br /> = Less than Practical Quantitabon Reporting limits stated in the August 10 1 B90 "Tri Regional Board <br /> Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites'(0 050 ppm far TPH <br /> 0 0005 ppm for BTEX) <br /> MPN1100m1 = 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 27 1992,by Aegis Environmental Inc of Roseville California <br /> Samples collected from July 27 through October 15 1092 by EMCON Associates of Sacramento California <br /> Samples collected after October 15 1982 by Blaine Tech Services Inc of San Jose California <br /> Fugro <br /> 90-020rFebruary 1994 <br />