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<br />RESPONSE TO DNR COMMENTS <br />(letter from Joseph H. Kurcinka, Hay 7, 1986) <br /> <br />1. The alternative suggested here is discussed in Section <br />3.6, of this FEIS. <br /> <br />2. Lloyd Knudson was contacted and toured the site with <br />North Fork, Inc. consultants on May 28, 1986. The <br />suggestions for wildlife habitat preservation and <br />enhancement are discussed in section 11.3 of the FEIS. <br /> <br />r <br /> <br />3. Rapid water level changes (occurring over .a period of <br />hours or days) should not be much more severe in the future <br />than they are at present. For example, as a rough estimate, <br />if 90 surface acres are converted to impervious surfaces <br />(based on 250 homes, roof tops, driveways, roads, and walks) <br />and there is 100\ runoff reaching the lake from a two inch <br />rainstorm (a worst case scenario) the lake level would rise <br />slightly less than two inches over natural increases. <br /> <br />Although the acreage of impervious surfaces will increase <br />with development, stormwater management practices will be <br />implemented to reduce stormwater inflow into Lake Itasca <br />which would further reduce the "bounce" effect. Wetlands <br />will be used to detain stormwater and infiltration areas are <br />proposed for stormwater infiltration. No stormwater <br />outfalls emptying directly into the lake are proposed. In <br />cases where there are no wetlands, stormwater will be <br />directed to grassland swales, eventually leading to Lake <br />Itasca. Because of the sandy soils in the watershed, a <br />percentage of stormwater will still infiltrate naturally. <br /> <br />Also an outlet at the south end of Lake Itasca is proposed. <br />The outlet elevation would be close to the Ordinary High <br />Water level that has recently been determined by the Mn DNR. <br />The lake elevation one year ago in May 1985 was 869.5 feet. <br />The OHW level is 870.8 feet. <br /> <br />, [ <br /> <br />If the 50 acre pond is constructed, this would further <br />reduce the "bounce" effect on Lak~ Itasca. The proposed 50 <br />acre pond (shown in Figure 3) would have some degree of <br />stormwater storage and would further dampen the stormwater <br />surge to Lake Itasca. <br /> <br />4. Those corrections have been made in the FEIS. <br /> <br />5. The results of a wildlife survey are included in Section <br />11 of the FEIS. <br /> <br /> <br />I <br />\ <br /> <br />-71- <br /> <br />- <br />