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TABLE 1 SUMMARY OF MONITORING WELL/EXTRACTION WELL DETAILS FLAG CITY CHEVRON 6421 Capitol Road, Lodi, California Well Installation Borehole Total Casing Casing SlotLECI,asing Screen Filter Pack Bentonite Grout Aquifier ID Date Diameter Depth Diameter Material Size vation Interval I Interval Interval Interval Zone W-13D 09 May 2000 8'/4-inch 150 ft %2-inch teflon 0 02-mch 1193 130 to 150 ft 128 to 150 ft 105 to 128 ft '/2 to 5 ft Primary Aquifer Zone MW-14 i 1 October 8'/4-inch 60 ft 2-mch PVC 0 02-inch 1090 40 to 60 ft 38 to 60 ft 35 to 38 ft 1 to 35 ft Second Zone 2002 MW-15 11 October 8,/,-inch 75 ft 2-inch PVC 0 02-inch 1104 65 to 75 ft 63 to 75 ft 60 to 63 ft 1 to 60 ft Rocky's 2002 Upper Zone MW-16 09 October 8'/4-inch 25 ft 2-mch 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 MW-18 09 October Roc2002 8'/4-inch 75 ft 2-inch PVC 0 02-inch 1054 65 to 75 ft 63 to 75 ft 60 to 63 ft 1 to 60 ft Upper Aper Z s Zone MW-19A 14 May 2004 8'/4-inch 50 ft 2-inch PVC 0 02-mch 1180 10 to 25 ft 8 to 25'h ft 6 to 8 ft 1 to 6 ft First Zone MW-19B 14 May 2004 81/4-inch 50 ft 2-inch PVC 0 02-inch 1172 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-mch - 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-mch 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 10'/4-inch 35 ft 6-inch PVC 0 02-mch 12 10 8`/z to 33'/2 ft 6'/2 to 35 ft 4%2 to 6%2 ft l to 4'/2 ft First Zone 2000 EW-2 17 July 2000 10'/4-mch 35 ft 4-inch PVC 0 02-mch 1146 l0 to 35 ft 8 to 50 ft 6 to 8 ft 1 to 6 ft First Zone EW-3 17 July 2000 10'/4-mch 50 ft 4-mch PVC 0 02-inch 12 03 40 to 50 ft 37%2 to 50 ft 35 to 37%2 ft 1 to 35 ft Second Zone Advanced GeoEnvironmental,Inc