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TABLE#NTINUEDI r ANALYTICAL RESECTS GROUNDWATER MOORE PETROLEUM INC 14800 WEST FRONTAGE ROAD MANTECA CALIFORNIA IAII resuhs to pg/L parts per brlhonl Monitoring Date Total Petroleum Aromatic Volatile Organics Well Collected Hydrocarbons Gasoline Benzene Toluene Ethyl Total EDB EDC benzene Xylenes MW 5 01108190+ 430 380 1 8 1 9 100 <<0 5 <<0 5 06128190+ 1 100 300 1 3 < 190 <<0 1 < <0 1 01/31/91 97" 09 < < 1 3 «01 03 04/23/91 80" 1 6 < 0 8 0 6 <<O 1 <<O 1 07/22/91 140 1 0 06 < 2 1 «0 5 1 2 0 10/21/91 260 2 8 < < < 11/21/91 50 2 4 < < < 01/31/92 320"" 2 5 < < 1 4 04/20/92 90 30 1 3 < 7 0 07/28/92 270 < < < < 10/20/92 70 < < < < 01/21/93 < < < < < 04/08/93 85 < < < < 06 07/08/93 80 < 0 6 < < <<0 5 MW 6 01/08190+ 130 04 < < < <<O 1 <<0 1 06/28/90+ < 0 3 < < < <<O 1 <<0 1 01/31/91 80 1 3 < < < <<0 1 <<O 1 04/23/91 < 0 5 < < < <<0 1 <<O 1 07/22/91 < < < < < <<0 5 <<0 5 10/21191 110 1 7 < < < 11/21/91 60 4 4 < < < 01/31/92 < 1 6 < < < 04/20/92 < < < < < 07128192 < < < < < 10/20/92 < < < < < 01/21/93 50 1 2 < < < 04/08/93 < < < < < 07/08/93 < < < < < NOTES EDB Ethylene dibromide EDC = 1 2 dichloroethane + = Groundwater analytical results reprinted from previous consultant s reports < = Below Practical Quantitation Reporting Limits per Tri Regional Board Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites (August 10 19901 (PQL for BTEK = 0 5 ppb TPH as gasoline and diesel = 50 ppb 1 << — Below indicated detection limit Not analyzed = Laboratory reports indicate this is weathered gasoline Laboratory reports indicate total petroleum hydrocarbons as gasoline result rs due to a petrokeum hydrocarbon that does not appear to be gasoline Aegrs Environmental inc 90 097IAugust 19 1993