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TABLE 1 SUMMARY OF MONITORING WELL DETAILS Sierra Lumber Manufacturers (Case # 2) 375 West Hazelton Avenue, Stockton, California Well Installation. Borehole Casing Casing Screen ':Filterpack Bentonite Grout I.D. Date Diameter :Total Depth Casing Materiaf Slot Size - Diameter Elevation Interval Interval Interval tntervdl MW-9 03/29/05 8-inch 40 ft 2-inch PVC 0.02-inch 12.75 20 to 40 ft 18—to-4 T0 jItA to 16 ft MW-10 03/29/05 WELL DESTROYED. DECEMBER 2006 MW-11 03/29/05 WELL DESTROYED:APRIL 2006 MW-12 01/30/06 8-inch 39 ft 2-inch PVC 0.02-inch 13.31 19 to 39 ft 13 to 39 to 11 ftMW-13 01/30/06 8-inch 65 ft 2-inch PVC 0.02-inh13.06 55 to 65 ft 53 to 65 o 51 ftMW-14 01/31/06 WELL DESTROYED:DECEMBER 2006 MW-15 09/18/06 8-inch 40 ft 2-inch PVC 0.01-inch 13.72 20 to 40 ft 18 to 40 o 16 ft MW-16 08/31/09 8-inch 70 ft 2-inch PVC 0.01-inch 13.12 65 to 70 63 to 70 60 to 63 1 to 60 MW-17 09/01/31 8-inch 100 ft 2-inch PVC 0.01-inch 13.04 90 to 100 87 to 100 84 to 87 1 to 84 MW-18 09!02/09 8-inch 70 ft 2-inch PVC 0.01-inch 12.92 65 to 70 63 to 70 61 to 63 1 to 61 MW-19 09/03/09 8-inch 70 ft 2-inch PVC 0.01-inch 13.75 65 to 70 63 to 70 58 to 63 1 to 58 MW-20 09/04/09 8-inch 70 ft 2-inch PVC 0.01-inch 13.25 65 to 70 63 to 70 61 to 63 1 to 61 DPE-1 11/22/10 12-inch 40 ft 4-inch PVC 0.02-inch NM 10 to 40 8 to 40 6 to 8 1 to 6 DPE-2 11/23/10 12-inch 40 ft 4-inch PVC 0.02-inch NM 10 to 40 8 to 40 6 to 8 1 to 6 DPE-3 02/04/12 10-inch 40 ft 4-inch PVC 0.02-inch NM 20 to 40 18 to 40 15 to 18 1 to 15 DPE-4 02/01/12 10-inch 40 ft 4-inch PVC 0.02-inch NM 20 to 40 18 to 40 15 to 18 1 to 15 Notes: Well casing elevations from MW-9,MW-12,MW-13 and MW-15 through MW-20 surveyed on 16 September 2009 by Morrow Surveying Land Surveyors ft: feet below surface grade PVC: polyvinylchloride NM:not measured Advanced GeoEnvironmental,line.