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<br />Chapter IV - Evaluation of Alternatives <br /> <br />Four factors were considered in evaluating the alternatives: <br />1. Impacts on the man-made environment <br />2. Institutional requirements for project implementation <br />3. Technical considerations and <br />4. Project costs. <br />Impacts associated with the man-made environment, the natural environment, and <br />the existing social structure are common to all of the alternatives, and are discussed <br />below. The technical considerations are similar for all alternatives. The costs and <br />institutional requirements vary between alternatives and are described in detail for <br />each alternative. The following sections describe the project's output/yield, impacts, <br />institutional requirements and costs. Financial feasibility is addressed for the <br />selected alternative in Chapter VI. <br /> <br />A. Impacts <br /> <br />A.1 Man-Made Environmental Impacts <br />There will not be any foreseen environmental impacts to existing dwelling units, <br />commercial facilities, or other structures in the project area, due to the developed <br />alternatives. Impact on utilities and the existing roadway are considered minor and <br />temporary and would exist only during construction. There will be no additional <br />lands that would be inundated above the historical impoundment elevation of 5040.6 <br />(existing spillway elevation). <br /> <br />A.2 Natural Environmental Impacts <br />No wetlands will be impacted during the rehabilitation of the outlet works and <br />resolution of the spillway issues. It is likely that the U.S. Corps of Engineers <br />(USACE) will issue a letter of "no permit required" for the project. <br /> <br />20 <br />