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FILE 07-3293 <br />August20,2007 <br />Page 5 of 5 <br />and shifting the house north west ten to 20 feet. (The 50' minimum setback shown on <br />the site plan is actually only required to be 30' as this is a side lot line.) <br />C. Detail of any Low Impact Development1 measures proposed to mitigate hardcover in <br />excess of 25 percent. <br />Through the use of vegetated swales drainage would be directed away from the <br />portions of the lakeshore with steep banks (see Exhibit J). The rain garden proposed <br />east of the sul-de-sac is for the runoff from the new Bracketts Point Road. It will not <br />receive any runoff from the proposed house or driveways. <br />Clearly the condition of having a 0-75 foot zone on three sides of this lot that comprises 55 <br />percent of the property reduces the overall allowable hardcover as compared to lots with only <br />one side abutting the lake. The Planning Commission should determine whether a <br />reasonably sized home with reasonable amenities and driveways could be developed without <br />a hardcover variance. In doing this the Commission should discuss each of the relevant <br />parameters from Section 78-123. <br />If the Commission determines it would be appropriate to grant a hardcover variance the <br />Commission should consider if additional Low Impact Development measures to reduce <br />runoff and/or to improve water quality should be required to compensate for the additional <br />hardcover. <br />Are there any other issues or concerns with this application? <br />Staff Recommendation <br />If the Planning Commission finds that a hardcover variance would be warranted, Staff <br />recommends the amount of the variance be reduced by narrowing the driveway and shifting <br />the house and that the island be a rain garden. <br />1 Low Impact Development (LID) is an innovative stonnwater management approach with a basic <br />principle that is modeled after nature: manage rainfall at the source. LID uses uniformly distributed <br />decentralized micro-scale controls. LID's goal is to mimic a site's predevelopment hydrology by using <br />design techniques that infiltrate, filter, store, evaporate, and detain runoff close to its source. <br />Techniques are based on the premise that stonnwater management should not be seen as stonnwater <br />disposal. (http://www.minnehahacreek.org/lid. php)