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• i TABLE 'I SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS - Three Palms Grocery 6732 East Highway 88 Stockton, CA Page 2 of 2 Measured in feet MSL (Reported In ug/1) Sample Date Wellhead Depth to G W TPHg I Benzene Toluene I Ethyl Xylenes TBA MTBE DIPE I ETRE I TAME 11,2-DCI EDB I VOCs ID Elev Water Elevation Benzene l 1 1 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 — DW 03/17/03 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 — DW 01/07/04 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 — DW 04/15/04 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 -- DW 07/15/04 NS 9899 NA <50 <0 5 <0 5 <0 5 <1 0 <5 0 <0 5 <0 5 <0 5 <0 5 <05 <0 5 -- GPI-91 03/25/04 NA NA NA 360 <0 5 12 17 14 <20 <2 0 <2 0 <2 0 <2 0 53 <2 0 -- GP3-100 05/20/04 NA NA NA <50 <0 5 <0 5 <0 5 <1 0 <20 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 -- CPT1-W90 03/29/04 NA NA NA 2,700 16 85 27 310 <20 <2 0 <2 0 <2 0 <2 0 64 <2 0 -- CPT1-W123 04/02/04 NA NA NA 270 <0 5 86 2 0 20 <20 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 -- CPT2-W94 04/02/04 NA NA NA <50 <0 5 <0 5 <0 5 <1 0 <20 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 -- CPT2-W132 04/02/04 NA NA NA <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 arbitrary surface elevation datum TBA denotes tertiary butyl ether analyzed by EPA Method 8260B NS denotes not surveyed ETBE denotes ethyl tertiary butyl ether analyzed by EPA Method 8260B NM denotes not monitored Lead denotes total dissolved lead by ICPIMS SB denotes soil bonng groundwater grab sample VOCs denotes Volatile Organic Compounds by EPA Method 524 2 ugA 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 5030/80158 Laboratory Method Detection Level MTBE denotes methyl tertiary butyl ether analyzed by EPA Method 8260B —denotes not analyzed for target constituent DIPE denotes di-isopropyl ether analyzed by EPA Method 8260B NA denotes not applicable TAME denotes tertiary amyl methyl ether analyzed by EPA Method 82608 Wells were resurveyed by Condor Earth Technology on 01/30/04 DRY' denotes groundwater at below the screened interval of the monitoring well W%148851TABLESXGINLTAB XLS AS