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TABLE 1 SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS Three Palms Grocery 6732 East Highway 88 Stockton, CA (Measured in feet MSL) of (Reported in ug/1) Sample Date WellHead Depth to G W TPHg Benzene Toluene Ethyl es It-Butanol MTBE DIPE ETBE TAME 1,2-DCA EDB VOCs ID Elev Water Elevation jBenzene7I MW-106/25/99 4270 7736 -3466 110 <0 5 <0 5 07 78 <50 <5 0 <5 0 <5 0 <5 0 -- -- -- MW-1 12/20/99 4270 7990 -3720 180 1 0 06 <0 5 23 <50 <5 0 <5 0 <5 0 <5 0 -- -- MW-1 03/14/00 4270 7599 -3329 <50 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- -- MW-1 11/30/01 4270 8444 -4174 85 06 <0 5 <0 5 12 <20 <2 0 <2 0 <2 0 <2 0 13 <2 0 — MW-2 06/25/99 4251 7721 -1471 <50 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- MW-2 -MW2 12/20/99 4258 7980 -3722 <50 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- -- MW-2 03/14/00 4258 7589 -3331 <50 <05 <05 <0 5 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- -- MW-2 11/30/01 4258 8433 -41 75 <50 <0 5 <05 <0 5 <1 0 <20 <2 0 <2 0 <2 0 <2 0 65 <2 0 -- i MW-3 06/25/99 4290 7772 -3482 <50 <05 <05 <05 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- MW-3 12/20/99 4290 8014 -3724 <50 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- -- MW-3 03/14/00 4290 7638 -3348 <50 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- -- MW-3 11/30/01 4290 8469 4179 <50 <0 5 <0 5 <0 5 <1 0 <20 <2 0 <2 0 <2 0 <2 0 30 <2 0 -- DW 06/25/99 NS NM NM -- -- -- -- - -- -- -- -- -- -- -- <MDL DW 12/20/99 NS NM NM <50 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- -- DW 03/14/00 NS NM NM <50 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <5 0 <5 0 <5 0 -- -- -- DW 11/30/01 NS NM NM <50 <0 5 <0 5 <0 5 <1 0 <20 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 -- Notes• MSL denotes mean sea level based on arbitary surface elevation datum TBA denotes tertiary butyl ether analyzed by EPA Method 8260 NS denotes not surveyed ETBE denotes ethyl tertiary butyl ether analyzed by EPA Method 826 NM denotes not monitored Lead denotes total dissolved lead by ICP/MS SB denotes sod boring groundwater grab sample VOCs denotes Volitile Organic Compounds by EPA Method 524 2 ugll denotes micrograms per liter or parts per billion (ppb) <MDLs denotes Constituent Concentration Below TPHg denotes Total Petroleum Hydrocarbons as gasoline, analyzed by EPA Method 5030/8015 Laboratory Method Detection Level MTBE denotes methyl tertiary butyl ether analyzed by EPA Method 8260 --denotes not analyzed for target constituent DIPE denotes di-isopropyl ether analyzed by EPA Method 8260 TAME denotes tertiary amyl methyl ether analyzed by EPA Method 8260 W 114885JABLE51Gwltab AS