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I TABLE 5 SUMMARY OF MONITORING WELL/EXTRACTION WELL DETAILS FLAG CITY CHEVRON 6421 Capitol Road, Lodi, California Well Installation Borehole Total Casing Casing Slot Casing Screen Filter Pack Bentonite Grout Aquifier I D Date Diameter Depth Diameter Material Size Elevation Interval Interval Interval Interval Zone Primary W-13D 09 May 2000 8%4-inch 150 ft 1/2-inch teflon 0 02-inch 11 93 130 to 150 ft 128 to 150 ft 105 to 128 ft '/2 to 5 ft Aquifer Zone 11 October MW-14 81/4-inch 60 ft 2-inch PVC 0 02-inch 1090 40 to 60 ft 38 to 60 ft 35 to 38 ft 1 to 35 ft Second Zone 2002 11 October Rocky's MW-15 2002 8%4-inch 75 ft 2-inch PVC 0 02-inch 11 04 65 to 75 ft 63 to 75 ft 60 to 63 ft 1 to 60 ft Upper Zone MW-16 09 October 81/4-inch 25 ft 2-inch PVC 0 02-inch 1056 5 to 25 ft 4 to 25 ft 3 to 4 ft 1 to 3 ft First Zone 2002 MW 17 09 October 8'/4-inch 60 ft 2-inch PVC 0 02-inch 1050 40 t0 60 ft 38 to 60 ft 35 to 38 ft 30 to 35 ft Second Zone 2002 09 October Rocky's MW-18 2002 S/4-inch 75 ft 2-inch PVC 0 02-inch 10 54 65 to 75 ft 63 to 75 ft 60 to 63 ft 1 to 60 ft Upper Zone MW-19A 14 May 2004 81/4-inch 50 ft 2-mch PVC 0 02-inch 11 80 10 to 25 ft 8 to 251/2 ft 6 to 8 ft I to 6 ft First Zone MW-19B 14 May 2004 8'/,-inch 50 ft 2-inch PVC 1 0 02-inch 11 72 45 to 50 ft 43 to 50 ft 25'/2 to 43 ft 1 to 6 ft Second Zone MW-20A 30 November 8'/4-mch 50 ft 2-inch PVC 0 02-inch - 10 to 25 ft 8 to 25%2 ft 6 to 8 ft 1 to 6 ft First Zone 2004 MW-20B 30 November 8!/4-inch 50 ft 2-inch PVC 0 02-inch - 45 to 50 ft 43 to 50 ft 25'/2 to 43 ft 1 to 6 ft Second Zone 2004 EW-1 28 March 101/4-inch 35 ft 6-mch PVC 0 02-inch 12 10 8'/2 to 33'/2 ft 6%2 to 35 ft 4'/2 to 6'/2 ft 1 to 4'/2 ft First Zone 2000 EW-2 17 July 2000 101/.-inch 35 ft 4-inch PVC 0 02-inch 11 46 10 to 35 ft 8 to 50 ft 6 to 8 ft 1 to 6 ft First Zone EW-3 17 July 2000 !0'/4-inch 50 ft I 4-mch PVC 0 02-inch 1203 40 to 50 ft 37Y2 to 50 ft 35 to 371/2 ft 1 to 35 ft Second Zone I Advanced GeoEnvtronmentat Inc