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• i <br /> TABLE 4 <br /> WELL CONSTRUCTION DETAILS <br /> Masonite (former PREM DOR) <br /> 433 West Scotts Avenue, Stockton, California <br /> Borehole Casing Casing Casing Screen <br /> Installation Drilling Total Depth Slot Size Filter Pack Bentonite Grout <br /> Well ID Diameter Diameter Material Filter Pack Elevation Interval(feet <br /> Date Company (inch) (feet bsg} (inch) (schedule) (arch) (feet MSL)t bsg) Interval(feet}Interval(feet)Interval(feet) <br /> MW-1 10-09-2003 CDI 8 34 2 PVC 40 0.020 #2/12 7.70 14 to 34 12 to 34 10 to 12 1 to 10 <br /> MW-2 10-10-2003 CDI 8 34 2 PVC 40 0.020 #2/12 8.04 14 to 34 12 to 34 10 to 12 1 to 10 <br /> MW-3 10-16-2003 CDI 8 34 2 PVC 40 0.020 #2/12 7.74 ' 15 to 35 12 to 34 10 to 12 1 to 10 <br /> MW-4 07-21-2005 CDI 8 36.5 2 PVC 40 0.020 #3 7.53 15 to 35 13 to 36.5 11 to 13 1 to 13 <br /> MW-5 07-21-2005 CDI 8 35 2 PVC 40 0.020, #3 7.52 15 to 35 13 to 35 11 to 13 1 to 13 . <br /> MW-6 03-19-2008 AWA 8 30 2 1 PVC 40 0.020 1 #2/12 7.30 10 to 30 8 to 10 6 to 8 0.5 to 6 <br /> MW-7 03-19-2008 AWA 8 30 2 1 PVC 40 0.020 #2/12 7.00 1 10 to 30 8 to 10 6 to 8 0.5 to 6 <br /> Notes <br /> MW`.ground water monitoring well <br /> MSL: mean sea level <br /> bsg: below surface grade. <br /> btoc:below top of casing <br /> 1:Survey completed by Morrow Surveying,Inc.of West Sacramento,California on 31 March 2008 via elevation based on Stockton benchmark#102. <br /> CDI:Cascade Drilling,Inc.of Rancho Cordorva,California <br /> AWA:All Well Abandonment;of Placerville,California <br /> Advanced GeoEnvironmental,Inc. <br />