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Extended Site Characterization Report: 7500 West Eleventh Street, Tracy, CA. Page 50 the DWR. The total depth of the well is not precisely known, but when a new 1.5- horsepower, submersible pump was installed in the well on June 1, 1999, the depth of the well was estimated to be 74 ft. and, when the pump was not in operation, the depth to _ first water in the well was noted to be approximately 10 ft. The new pump was set at a depth of 64 ft. 8.3.2 Potable Water-supply Well at 24169 South Chrisman Road This well supplies potable water to the residence at 24169 Chrisman Road and to Central Valley Collision (formerly a wooden pallet manufacturing facility) at 24195 Chrisman Road. No well log is available. A new one-horsepower pump was set at a depth of 40 ft. in June 1995, at which time the depth to first water in the well was 9 ft. when the pump was not operating. 8.3.3 Potable Water-supMly Well at 7601 West Eleventh Street This 6-in. diameter well was completed on October 2, 2002. It will supply water to the commercial development currently under construction on the property at 7601 West Eleventh Street. The well boring was drilled to a total depth of 580 ft and the total depth of the completed well is 500 ft. The well casing is perforated between 470 ft and 500 ft. BGS and the annular space between the casing and the boring wall is sealed with Portland cement from the ground surface to a depth of 200 ft. (Note: There is a clerical error on the well log that cites the address as being 7600 West Eleventh Street. As stated here, it is, in fact, at 7601 West Eleventh Street.) 8.34 Potable Water-supply Well at 23901 South Chrisman Road .=< This well supplies potable water to the Suburban Propane facility at 23901 South Chrisman Road and to the commercial building at 7501 West Eleventh Street formerly occupied by the Fisco Farm and Home Store (Fisco)under a joint use agreement. No well log is available. A record of a pump repair (see Appendix D for copy of permit application) in March 1993 indicates that the casing diameter is 8 in. and the pump, which was replaced by Fisco in June 1995, is a one-horsepower unit. The manager of the Suburban Propane facility reports that the personnel at that site have i.: not used water from the well for many years because they suspected it was unsuitable for human consumption (Dap 2002). He also reported that, in the past, tests had been performed on water from the well, but no records of the tests could be found at Suburban Propane or at the SJCEHD. 8.3.5 Potable Water-soply Well at 23950 South Chrisman Road This 8-in. diameter well, which supplies potable water to the office building at 23950 Chrisman Road, was drilled on October 20, 1980. A copy of the well log is included in Appendix D. The depth of the boring was 345 ft., the well has a total depth of 325 ft., the casing is perforated at 297 ft to 325 ft. BGS, and the annular space between the casing SJC