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i Table 4 <br /> Monitoring Well Groundwater Data <br /> Parkinson's Arco <br /> 3250 West Hammer Lane <br /> Stockton,California <br /> Top of <br /> Casing Depth to Groundwater TPH as Ethyl- Tert-Butyl <br /> Sample Date Elevation Water Elevation Gasoline Benzene Toluene benzene Xylenes MtBE DIPE ETBE TAME Alcohol EthanolMethanol 1,2-DCA EDB <br /> Identification Sampled (MSL) (feet b s) (MSL) (ug/1) u (ug/1) u A (u /1) (u ) (ug/1) u u (ug/1) u /1) u (ug/1) u <br /> MW-1 09/21/00 4.30 12.96 -8.66 25,700 1,820 503 1,450 582 28,300 <2.0 2.92 108 3,710 <3,000 <5.0 12.0 <2.0 <br /> MW-2 09/21/00 4.74 13.23 -8.49 52.9 <0.5 <0.5 <0.5 <0.5 5,830 <2.0 12.0 45 1,150 <3,000 <1.0 Q.0 <2.0 <br /> MW-3 09/21/00 3.76 12.34 -8.58 5,900 41.3 24.3 56.2 468 346 <2.0 12.0 2.08 <200 <3,000 <1.0 <2.0 <2.0 <br /> ug/1 Micrograms per liter <br /> MSL Mean sea level <br /> bgs Below ground surface <br /> TPH Total petroleum hydrocarbons <br /> MtBE Methyl tert-butyl ether <br /> DIPE Diisopropyl ether <br /> ETBE Ethyl-t-butyl ether <br /> TAME Tert-amyl methyl ether <br /> EDB Ethylene dibromide <br /> 1,2-DCA 1,2-Dichloroethane <br />