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TABLE 2OTINUED) ANALYTICAL RESULTS GROUNDWATER MOORE PETROLEUM INC 54800 WEST FRONTAGE ROAD MANTECA CALIFORNIA (All results to pg/L parts per billion) Monitoring Date Total Petroleum Aromatic Volatile Organics Well Collected Hydrocarbons Gasoline Benzene Toluene Ethyl Total EDB EDC benzene Xylenes MW 5 01108190+ 430 38 0 1 8 1 9 100 «0 5 «0 5 06/28190+ 1 100 300 1 3 < 190 <<0 1 «0 1 01/31/91 97' 0 9 < < 1 3 «0 1 0 3 04/23/91 80' 1 6 < 08 06 <<0 1 <<0 1 07/22/91 140 1 0 0 6 < 21 «0 5 120 10/21/91 260 2 8 < < < --- --- 11/21/91 50 2 4 < < < --- 01/3V92 320" 2 5 < < 1 4 --- 04/20192 90 30 1 3 < 70 --- 07128/92 270 < < < < --- -- 10/20/92 70 < < < < --- 01/21193 --01/21193 < < < < < --- --- 04l08193 85 < < < < 0 6 07/08/93 80 < 0 6 < < --- «0 5 11/10/93 55 0 8 < < < «0 5 M W 6 01/08190+ 130 04 < < < «0 1 <<0 1 06128190+ < 0 3 < < < «0 1 <<0 1 01/31/91 80 13 < < < «01 «01 04/23/91 < 0 5 < < < «0 1 «0 1 07/22/91 < < < < < «0 5 «0 5 10/21/91 110 1 7 < < < _- --- 11l21191 60 4 4 < < < 01131/92 < 1 6 < < < --- --- 04/20/92 < < < < < --- --- 07/28/92 < < < < < --- --- 10120/92 < < < < < --- --- 01/21/93 50 1 2 < < < ___ __- 04/08193 < < < < < --- --- 07/08/93 < < < < < --- --- 10l11/93 < < < < < _-- ___ NOTES EDB - Ethylene dibromide EDC = 1 2 dichloraethane + = Groundwater analytical results reprinted from preyious consultants reports = Below Practical Quantitation Repoilitig titnils per Tri Regional Board Staff Recommendations for Prelanuwry Evaluation and Investigation o1 Undcrground Tank Sites (August 10 1990) (PDL for BTEX=0 5 ppb TPH as gasoline and diesel=50 ppb <a = 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 90 0071December 15 1993