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TA 2 <br /> ANALYTICAL RESULTS GROUNDWATER <br /> SHELL SERVICE STATION (WIC No 204-7525-0104) <br /> 6131 PACIFIC AVENUE, STOCKTON, CALIFORNIA <br /> (parts-per-milhon) <br /> Total Aromatic Volatile Organics <br /> Monitoring Date Petroleum Total Total Fecal <br /> Well Collected Hydrocarbons Lead Coltform Coliform <br /> Gasoline Benzene Toluene EthylTotal (MPNI100m1) (MPN/100m1) <br /> benzene Xylenes <br /> MW-3 07/23/90 630 100 180 18 110 --- 540 33 <br /> 10/09/90 690 79 120 12 90 —0 002 >2,400 920 <br /> 01!10/90 630 100 170 1 2 72 — 16 Poe <br /> 04/09/91 FLH FLH FLH FLH FLH FLH FLH FLH <br /> 07/17/91 FLH FLH FLH FLH FLH FLH FLH FLH <br /> 10/08/91 FLH FLH FLH FLH FLH FLH FLH FLH <br /> 02/26/92 FLH FLH FLH FLH FLH FLH FLH FLH <br /> 0511219:' FLH FLH FLH FLH FLH FLH FLH FLH <br /> 07108/92 FLH FLH FLH FLH FLH FLH FLH FLH <br /> 1011519:' FLH FLH FLH FLH FLH FLH FLH FLH <br /> 01/11/93 FLH FLH FLH FLH FLH FLH FLH FLH <br /> 04128/9--0 FLH FLH FLH FLH FLH FLH FLH FLH <br /> 0812619:- 1200 190 220 22 110 --- <br /> 11/22/9:- 1500 190 28 0 «0 250 150 --- <br /> 02/15l94 1200 220 31 0 25 140 — --- <br /> 05/10/94 150 19 28 25 13 --- — — <br /> 08116/94 85 18 28 22 13 --- — --- <br /> 11/17/94 120 17 26 2 9 11 — --- <br /> MW-3D 05/10/94 150 20 29 25 14 -- -- — <br /> ("Dup-1") 08/16/94 140 18 29 2 6 13 --- -.- _. <br /> 11/17/94 110 17 27 2 5 11 — -- <br /> NOTES = Not analyzed <br /> = Less than Practical Quantitation Reporting limits stated in the August 10 1990 Tri Regional Board <br /> Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites"(0 050 ppm for TPH <br /> 00005 ppm for BTEX) <br /> MPN7100mI = Most Probable Number(MPN)of bacteria per one hundred milliliters <br /> t< = 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 /> I7 - Duplicate sample <br /> Samples collected prior to July 27 1992 by Aegis Environmental Inc of Roseville California <br /> Samples collected from July 21 through October 15 1992 by EMCON Associates of Sacramento California <br /> Samples collected after Octobor 15 1992 by Blaine Tech Services Inc of San Jose California <br /> Pugro <br /> 90-0201November 1994 <br />