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TABLE 1.1 <br /> FIRST SEMIANNUAL 2011 <br /> GROUNDWATER MONITORING AND ANALYTICAL DATA <br /> Former Texaco Service Station <br /> Chevron Site ID 309075 <br /> 3978 South Highway 99 <br /> Stockton,California <br /> TOC Well Depth to Groundwater TPH-MO with TPH-DRO with Total <br /> Elevation Water Elevation TPH-MO Silica Gel* TPH-DRO Silica Gel* TPH-GRO Benzene Toluene Ethylbenzene Xylenes <br /> Well ID Date (feet MSL) (feet) (feet MSL) (pg/L) (Ng/L) (pg/L) (pg/L) (pg/L) (Ng/L) (pg/L) (pg/L) (pg/L) <br /> MW-1 4/7/2011 30.74 51.13 -20.39 850 990 710 64 500 <0.5 <0.5 <0.5 <0.5 ` <br /> MW-2 4/7/2011 30.90 52.28 -21.38 490 190 200 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> MW-3 4/7/2011 29.85 51.34 -21.49 680 410 190 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> MW-4 4/7/2011 30.12 51.58 -21.46 520 490 280 61 <50 <0.5 <0.5 <0.5 <0.5 <br /> MW-5 4/7/2011 30.96 52.38 -21.42 510 180 250 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> MW-6 4/7/2011 29.70 51.05 -21.35 160 48 60 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> MW-6D 4/7/2011 29.98 51.35 -21.37 7,600 430 3,700 92 <50 <0.5 <0.5 <0.5 <0.5 <br /> a <br /> Notes: <br /> TPH-MO Total petroleum hydrocarbons as motor oil. <br /> TPH-DRO Total petroleum hydrocarbons as diesel range organics. <br /> TPH-GRO Total petroleum hydrocarbons as gasoline range organics. <br /> * Silica gel cleanup completed with 10-gram column silica gel. <br /> TOC Top of casing. <br /> MSL Mean sea level. <br /> pg/L Microgram per liter. <br /> < Not detected at or above the laboratory method detection limit shown. <br /> G:\Aproject\ENV\CHEVRON\309075\6 Deliverables\Periodic Monitoring\2011\1SA11\Temp PDF\Tables\Table 1-M&S Data 309075.xlsx 1 of 1 <br />