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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />· Patal flaw study which excludes from further consideration sites having insurmountable <br />environmental, technical, or economic problems; <br /> <br />· Site ranking, which ranks remaining candidate sites based on environmental, technical, <br />operational, and economic criteria. The site ranking procedure allows a direct <br />comparison of candidate sites based on quantitative and qualitative factors such as <br />embankment dimensions, disturbance areas, storage capacities, etc; and culminate with <br /> <br />· Evaluation and identification of the preferred embankment design and dam site. <br /> <br />The primary site selection criteria established by MeRe for the dam and reservoir project <br />consists of: <br /> <br />· Minimum storage volume of 500 acre-feet; <br /> <br />· Potential for additional storage volume; <br /> <br />· Minimize embankment volume; and <br /> <br />· Stable foundation and abutment conditions. <br /> <br />7.2 Regional Screening <br /> <br />A regional screening of potential dam site locations was conducted using 1 :24,000 scale USGS <br />topographic maps. The topographic maps utilized in the site selection process consisted of the <br />Somerset and Minnesota Pass 7.5 minute quadrangles. <br /> <br />The site selection area for the New Minnesota Dam was defined by eWeB representatives <br />during the April 12, 1990 site trip. The site selection area is confined to reaches of the Dry <br />Pork of Minnesota ereek, up to approximately 3 miles upstream of the existing Minnesota Dam. <br />This stretch of the Dry Pork of Minnesota ereek is sufficiently large in extent to include all of <br />the more practical dam and reservoir sites. Table 7.1 summarizes many of the factors <br />potentially influencing the regional screening of prospective dam and reservoir sites. <br /> <br />12 <br />