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-AL2 <br /> ANALYTICAL RESULTS: GROUNDWATER <br /> SHELL SERVICE STATION,6131 PACIFIC AVENUE,STOCKTON,CALIFORNIA <br /> (Ad hydrocarbon results in pwtsier-Won) <br /> Total Aromatic Volatile Organics <br /> Monitoring Date Petroleum Total Total Fecal <br /> Well Collected Hydrocarbons Lead Collforrn Cahform <br /> (MPNJ100m1) [MPNJ100mq <br /> Gasoline Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> MW-1 07/23/90 350 19 is 06 2 0 — 5 <<2 <br /> 10/09/90 < 08 < < < 5 13 <<2 <br /> 01/10/90 70 09 < < < — 136 Neg <br /> 04/09/91 < < < < < --- «10 «10 <br /> 07/17/91 130 10 < < < — 23 23 <br /> 10/08/91 160* 16 < < < — 92 9 2 <br /> 02/26/92** 430 as 2 6 06 14 — <<2 <<2 <br /> 05/12192** 90 50 < < 0 6 — 70 «3 8 <br /> 07/08/92** 53 59 052 < 0 89 — «3 8 «3 8 <br /> 10/15/92 76 56 068 < < — «3 8 «3 8 <br /> 01/11193*** 98 33 < < < — <<2 0 --- <br /> 04/28/93*** 65 37 < 13 5 3 --- --- — <br /> MAD 01/11/93*** 290 28 < < < — — — <br /> Coup") 04128/93*** 70 43 0 64 19 76 — — — <br /> MW-2 07/23/90 1,900 440 420 71 210 --- 33 <<2 <br /> 10/09/90 570 780 430 < 270 «0 002 21 <<2 <br /> 01/10/90 1,200 3600 750 < 530 — <<2 2 Neg <br /> 04/09/91 4,500 1,200 0 1000 120 2100 — 1 1 1 1 <br /> 07/17/91 7,200 3,6000 4400 1400 7100 — >23 >23 <br /> 10/08/91 10,000 7,6000 3500 2600 6000 --- 120 120 <br /> 02/26/92** 17,000 7,4000 2200 3200 1,3000 — <<2 <<2 <br /> 05/12/92** 71 26 0 < 085 2 4 — «1 «3 8 <br /> 07/08/92** 4,900 1,6000 < 600 2100 --- «3 8 «3 8 <br /> 10/15/92 2,500 94 30 42 9 4 --- «3 8 <<3 8 <br /> 01/11193*11* 290 28 < 63 < — <<2 0 --- <br /> 04/28/93*** 1 790 1 30 1 18 1 55 1 30 1 — — <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"(50 ppb for TPH <br /> 0 5 ppb for BTEX) <br /> MPNt100m1 - 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 /> •" Data collected by EMOON Associates of Sacramento,California. <br /> ••• - Data collected by Blaine Tech Services,Inc of San Jose California <br /> 0 - Duplicate sample <br /> Aegis Environmental Inc <br /> 90-020/June 21,1993 <br />