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Enbridge Energy, LP Hoover& Keith, Inc. <br /> Waterloo Pump Station RN 3083/JN 4796 <br /> Noise Impact Analysis (10/10/14) <br /> REPORT SUMMARY <br /> In this report, Hoover and Keith, Inc. (H&K) present the results of a noise impact analysis associated <br /> with the planned improvements at the existing Waterloo Pump Station (hereinafter referred to as <br /> "Station"), which is owned and operated by Enbridge Energy, LP (Enbridge). The planned <br /> improvements include the abandonment of the existing Station pump units and the construction of new <br /> Station pump units. The purpose of the acoustical analysis is to: <br /> • Project the sound level contribution that would result from operating the new Station <br /> equipment, which consists of new pump units and auxiliary equipment. <br /> • Determine noise control measures and noise requirements for proposed Station equipment to <br /> insure that the facility does not exceed 50 dBA at the Station property lines. <br /> The following table depicts the estimated Station sound level contribution at the North, East, West and <br /> South property lines and the Dane County noise requirement: <br /> Closest Property Lines Distance to Est'd Sound Dane County Compliance with <br /> Center of Pump Contribution of ` Property Line Dane County <br /> Building .Station Requirement Requirement <br /> 1 (dBA) <br /> North P.L(Pos. "N") 300 ft. 43.4 50 Yes <br /> East P.L. (Pos. "E") 700 ft. 348 50 Yes <br /> South P.L. (Pos. "S") 800 ft. 34.0 50 Yes <br /> West P.L. (Pos. "W") 625 ft. 35.3 50 Yes <br /> Sound Level Contribution of Proposed Station at Property Lines <br /> and Assessment to Dane County 50 dBA Requirement <br /> In summary, the acoustical assessment indicates that if the recommended and/or anticipated noise <br /> mitigation measures are implemented, the noise attributable to the Station at the property lines would <br /> comply noise requirements stipulated by Dane County for the project. <br /> -i- <br />