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�� ate.� .� .n.. �� w� ww■ ■wwr �e � ttitt� � T ANALYTICAL RESUL . GROUNDWATER MOORE PETROLEUM INC 14800 WEST FRONTAGE ROAD,MANTECA CALIFORNIA (All results in 4L,parts-per-billion) Monitoring Date Total Petroleum Aromatic Volatile Organics Well Collected Hydrocarbons Gasoline Benzene Toluene Ethyl- Total EDB EDC benzene Xylenes MW-1 08/22/88+ < < < < < «0 1 36 05/11/89+ < 2 1 < < 5 0 «0 2 «0 2 01/08/90+ 1 1,0000 0 3 1 9 < < «0 1 «0 1 06/28/90+ 1100 0 8 130 0 4 6 3 «0 1 65 01/31/91 120 0* 0 9 0 6 < < «0 1 220 04/23/91 440 0* 11 0 < < 0 5 «0 1 350 07/22/91 < < < < < «0 5 140 10/21/91 2200 2 5 < < 05 -- --- 11/21/91 1300 1 3 < < 0 7 --- -- I 01/31/92 390 0** 4 9 < < 12 --- 04/20/92 < < < < < -- --- MW-2 08/22/88+ 2000 < < < 4 0 «0 1 04 05/11/89+ 1000 1 7 70 < 5 0 «0 2 «0 2 01/08/90+ 2900 1 2 < < 0 5 «0 1 5 8 06/28/90+ 3700 1 1 08 < 31 «0 1 «0 1 01/31/91 450 0* 1 2 05 < 0 6 «0 1 34 04/23/91 340 0* 0 9 < < 0 7 «0 1 «0 1 07/22/91 2100 < 05 < 1 2 «0 5 1 4 10/21/91 1500 < < < 2 4 -- --- 11/21/91 1400 1 5 < < 0 6 --- 01/31/92 730 0** < < < < --- ___04/20/92 < < < < < --- --- NOTES EDB = Ethylene dibromide EDC = 1 2 dichloroethane + = Groundwater analytical results reported by previous consultant < = Below Practical Quantitation Reporting limits per "Tri Regional Board Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites" (August 10, 1990) (PQL for BTEX=0 5 ppb,TPH,as gasoline and diesel= 50 ppb) = Below indicated detection limit = Not analyzed * = Laboratory reports indicate this is weathered gasoline *" = Laboratory reports indicate total petroleum hydrocarbons as gasoline result is due to a petroleum hydrocarbon that does not appear to be gasoline Aegis Environmental Inc June 26 1992