ARCHIVED REPORTS_MONITORING WELLS INSPECTIONS, REPAIR AND REDEVELOPMENT REPORT

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• III. Monitoring Well Inspections, Repairs and Redevelopment Subsequent field reconnaissance and magnetometer survey were conducted on April 25, 2003 in order to pin point and confirm the actual location of MW-1 and 4. The four monitoring wells were repaired and redeveloped on April 25, 2003. Blaine Tech Services performed the work under the supervision of Chris Palmer, R.G., CEG, CHG, retained by TRE Consulting. The following repairs and redevelopment was performed as discussed below (see Appendix A for Blaine Tech field sheets and Table 2). Photographs of all four monitoring wells as well as the repair and redevelopment activities are also presented in this report. 111.1. Monitoring Well MW-1: The initial location of monitoring well MW-1 was thought to be at a metal surface mount with an open casing. Upon clearing this metal mount, the metal was apparently a fence post holder, so additional magnetometer sweeps were performed in the immediate vicinity. MW-1 was located a few feet away from the initial position, with the well box partially intact. The well casing expansion plug was in place. The casing had not been filled with soil as initially thought. Blaine Tech proceeded to surge and redevelop the well. The well was a 4-inch • diameter casing about 22 feet deep. Blaine Tech surged the casing for about 10 minutes and then removed about 63 gallons of water with a submersible pump. Sand pumping was minimal. The water was turbid initially but continued to clear during the pumping. The well pumped down about 5.4 feet and the water level was rising upon ending redevelopment. A new surface mount (see photograph 1 below) and well box was installed around the MW-1 casing. The box was cemented in position with a new locking expansion cap A b � r f ll e� Photograph 1-A Refinished view of MW-1 with New Well Cover,Cap,and Lock • 5