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II. Monitoring Well Initial Inspection, Locations and Conditions <br /> Four monitoring wells are located on Parcels I, II and III at the Delta Bulk <br /> Terminals Facility. A site reconnaissance and a magnetometer survey were <br /> performed on April 9, 2003 to locate the four monitoring wells and access the <br /> current condition of each well. As indicated in the background section, Dames <br /> and Moore installed the wells in 1991 under well installation permits issued by <br /> the San Joaquin County Environmental Health Department (EHD) (see <br /> Reference). Well logs and details were not available but all appeared to be <br /> either Sch. 40 PVC cased 2-inch diameter, or Sch 80 PVC cased 4-inch diameter <br /> 25-foot deep wells. When the monitoring wells were uncovered and repaired on <br /> April 25, 2003, all the casings were found to be 4-inch diameter well casings. <br /> The April 9, 2003 site reconnaissance with Global Positioning System (GPS) <br /> monitoring well location coordinates is summarized below. <br /> 11.1. Monitoring Well MW-1 (GPS N 37 56.879; W 121 19.968) <br /> • This monitoring well is located on Parcel III just north of the railroad tracks <br /> about 16 feet north of a telephone pole. The well was buried and digging away <br /> the surface fill exposed the concrete collar. The cap appeared to be missing and <br /> the monitoring well casing may be filled with the fill (assumed to be coke residual <br /> mixed with soil). This well was originally installed as the "upgradient" well for <br /> background sampling. <br /> 11.2. Monitoring Well MW-2 (GPS N 37 56.719; W 121 19.997) <br /> This monitoring well is located on Parcel I in an area behind the sulfur <br /> storage area and building. The monitoring well concrete collar and lid were in <br /> place and rusted shut and could not be opened. The casing is assumed to be <br /> intact. <br /> 11.3. Monitoring Well MW-3 (GPS N 37 56.740; W 121 19.949) <br /> This monitoring well is located in Parcel II adjacent to the storm water <br /> runoff area. The casing is an exposed location with a broken top, and was not <br /> capped at the time of the visit. The casing appears to be Sch 80 PVC and water <br /> • was observed in the casing, estimated to be about 4.0 feet below existing grade. <br /> 3 <br />