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h�+itorie8 date TOTAL PETROLEUM ARD RTIC VOLATILE OKCANIC AND OXYCENATIS <br /> tVell GWlened WbAOCAkWNs <br /> QA OUNF AIUR BENZENE TOLtmF* ETFfn -YUNE TAME TM.eW" MTBE 1 2 UG <br />' BENZENE EMaiwl <br /> andF08 <br /> MdtNt10[ <br /> 12/27/00 NO NO NO ND NO ND NO NO D68MTBE NO <br /> 7130101 NO NO NO NO NO ND 1.8 NO 200 MTBE NO <br /> MW-4 2/12/00 NO NO NO ND NO ND NO NO 3$MTBE ND <br /> 4128100 NO 960 NO ND NO ND NO ND 3 9MTOE NO <br /> i <br /> 9/20/00 NO ND ND NO NO ND NO NO 1 1 MTBE ND <br /> Methanol 470 <br /> 12/27/00 NO NO ND NO ND ND NO NO 0 71 MTBE ND <br /> 7130101 NO 186 NO NO NO NO NO ND 1.7MTBE NO <br /> MW-5 2/12100 NO NO NO NO NO ND NO NO NO NO <br /> 4/28100 NO NO NO NO ND ND NO NO NO ND <br /> 9/20/00 NO ND NO ND ND NO NO NO NO NO <br /> 17127/00 NO ND NO NO NO NO ND NO NO ND <br /> 7/30101 ND NO ND NO NO ND NO NO NO ND <br /> MW-6 2/12/00 NO NO ND NO NO NO NO NO ND NO <br /> 4/28100 NO NO NO NO NO ND ND NO NO ND <br /> 9/20/00 ND NO ND NO NO NO NO NO NO ND <br /> 12/27/00 ND NO NO ND NO NO NO ND ND NO <br /> 7130/01 NO ND ND NO NO NO ND NO NO NO <br /> Nate N D - Not Detected at Method Detection Limits <br /> NA - Not Analyzed <br /> Detection Limits EPA Method 8020 varies most are - 5 0 ppb <br /> EPA Method 8015 - 0 5 mg/kg or 500 ppb <br /> TABLE II <br /> HISTORICAL GROUNDWATER INFORMATION <br /> (Bold designates most recent measurements) <br /> Monitoring Well Elevation of PVC Depth to Groundwater Elevation of Gradient Dsrectien <br /> Groundwater <br /> MW-1 2/12/00 14 16 feet 6 80 feet +736 East <br /> MW-1 4/28/00 14 16 feet 7 00 feet +716 East/Northeast <br /> MW-1 9/20/00 14 16 feet 8 45 feet +571 Northeast <br /> MW-1 9/20/00 14 16 feet 8 45 feet +571 Northeast <br /> MW-1 12/27/00 14 16 feet 9 24 feet +492 North <br /> i <br /> • Avalon Environmental Consultants <br /> Protect#9627-001-7 <br /> Joe's Truck Plaza 15600 South Harlan Road <br /> August 16, 2001 3 Lathrop, California <br />