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TABL* INUED) • ANALYTICAL RESULTS GROUNDWATER MORE PETROLEUM INC 14806 WEST FRONTAGE RQAD MANTECA. CALIFORNIA (Af!results In gA-parts-per-billion) Monitoring Date Total Petroleum Aromatic Volatile Organics Well Collected Hydrocarbons Gasoline Benzene Toluene Ethyl Total EDB EDC benzene Xylenes MW 3 05/11/89+ 600 880 370 30 320 «0 2 170 01/08/90+ 1,500 900 610 150 900 <<5 0 <<5 0 07/06/90+ 920 330 240 17 290 «0 1 «0 1 01/31/91 220 190 51 < 160 «0 1 «01 04/23/91 820 710 200 35 550 «0 1 «0 1 07/22/91 810 860 120 13 940 «0 5 83 10/21/91 1,600 3300 420 360 2100 11/21/91 940 1000 130 < 770 01/31/92 1,300 700 100 130 600 04/20/92 190 86 09 < 38 — 07/28/92 310•' < < < < 10/20/92 1,500 34 < 21 15 __ _- MW 4 05/11/89+ 4,200 1,4000 3400 70 5500 <<5 0 160 01/08/90+ 2,200 4400 1800 170 1800 <<5 0 <<5 0 07/06/90+ 1,600 930 210 09 480 «0 5 «0 5 01/31/91 2,000 900 330 44 450 «0 1 91 04/23/91 1,000 660 310 150 600 «0 1 «0 1 07/22/91 1,400 1100 620 160 5000 «0 5 110 10/21/91 3,700 8800 600 540 2700 11/21/91 3,500 1,200 0 800 < 120 01/31/92 2,400 7400 990 120 1900 04/20/92 1,100 540 300 36 1000 07/28/92 3,900 1 100 63 49 240 10/20/92 3,200 650 61 47 300 NOTES EDB = Ethylcnc dA)rnrnide EDC = 1 2 dtchtoroethane r = GroundwatLr analytical results reprinted from previous consultant s reports < = Below Practical Quantutauon Reporting Limits pu Tri Regional Board Slatt Rt<onuncndations lot PrLltrnw.�ry Evaluation and invuugation of UndLrground Tank Sites (August 10 1990) (f Ul-for BTLX =0 5 ppb TPH as gasoline and diost I-!)0 ppb) Br.low Indicated dt.tcctlon hrnrt Not analyzed = Laboratory reports indicate total pelroleum hydror„rbons as gaschne resuit is duc to a petroleum hydrocarbon that does not appear to be gasoline Aegis Environmental Inc 9009//March 22 1100