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I I I I I I I I I I I I I I I I I I I Chapter 111- Background Information ,/ Dam Height: 40.0 feet (from D/S toe) Dam Crest Length: 10,729 feet Dam Crest Width: 15.0 feet Reservoir Surface Area: 1,750 acres Reservoir Capacity: 48,874 acre-feet Spillway Width: 20 feet As described in Chapter I, Boyd Lake contains a high-level diversion structure and a low- level outlet works. The Company also owns and operates a pump station located on the southeast side of the reservoir, which contains two 350 Hp pumps that are capable of pumping an average of approximately 120 cfs into the Canal. A report dated January 23, 2002 by Gauthiere Engineering to the SED describes the deficiencies for both the high-level diversion structure and the low-level outlet works. The report is presented in Appendix D. Deficiencies for .the low-level outlet works are based on a field Inspection conducted with the SED on October 11,2001 and include the following: . Longitudinal and circumferential cracks in portions of the tunnel / j . A large hole in the arch, which was repaired with wood . Various leaks throughout tunnel, one estimated to be 2 GPM . A one- to two-foot layer of sediment throughout the tunnel The report states that the arch section, portion of the low-level outlet works, which is located under the dam, is in need of replacement. Gauthiere Engineering's report focuses on the portion of the low-level outlet works that crosses under the embankment. Based on review of this report and site inspections conducted by Boyle Engineering, we believe that the entire low-level outlet works needs to be replaced. While the Boyd Lake Dam Outlet System Feasibility Study 7 1f30VLE