06-15-2015 Planning Commission Packet

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. �� 15-3739 May 1 B,2015 Page 4 of 9 Gene�ral Site Characteristics The property abuts Mooney Lake, a Recreat�onal Deveiopment lake. A contiguous portion of an over 40 acre native Maple-basswood forest exists in the northem portion of the property; the southern portion of the praperty consists of established prairie with scattered wetlands. The plan reflects delineated wetland in 10 distinct basins with two additional created ponds neax iVlooney Lake. The eastern portion of the property also contains areas of steep slopes or bluffs. Lot 2 Block 1 has slopes of approximately 20% at its steepest, while the slopes at the site of the existing residence on Lot 6 Block 1 exceed 30% and would be considered as bluffs. Lot Layout and Lot Standards Proposed Lots 1 and 2, Block 1 will be accessed off of Sixth Avenue North via a private road contained within a 50-foot out�ot; likewise a 50-foot private road outlot with cul-de-sac will provide access to Lots 3 through 7, Block 1 and Lots 1 and 2, block 2. Lots 1 and 2, Block 3 will have individual driveway access directly off of Hunter Drive. All lots are proposed to be served with private wells and septic systems. Septic testing has been conducted and the test reports have been reviewed by the City's consulting ISTS inspector- see Exhibit F. Mooney Lake has a 100-foot structural setback requirement from the lake for lots served by private septic systems. Average lakeshore setback restrictions will apply to each of the lakeshore iots. According to the RR-1 B Zoning District standazds all of the lots must contain 2.0 dry, buildable acres and meet a 200' width requirement at the road frontage as well as at the 50-foot principa.l bui�ldang setback from the road (or 100-foot lakeshore structural setback). Stormwater Quality Overlay District hardcover restrictions apply to the lakeshore lots (Hardcover Tier 1, 25% HC limit) as well as Lots 1 and 2, Block 2 (assigned to Hardcover Tier 2 - 30% HC limit - per the methodology of Code Section 78-1741) which are also wholly or partially within 100� feet of Mooney Lake. Following is a brief review of each proposed lot, with applicant's comments excerpted from the Conservation Design Report: Lot 1, Block 1: This Iot is shown as having 4.0 total acres of which 3.5 is shown t� be dry buildable azea Wetland Z is shown to be located entirely within this proposed lot. This lot is proposed as a lakeshore lot with 200 feet in width at the shoreline. The slope leading from the lake averages approximately 18%. It appears a house can be located on this property meeting the required 50' reaz, 100' lake, 30' side and 35' wetland setbacks. A portion of tius property is currently shown to be established prai.rie vegetation. Applicant's Con�ervation Design Report Comments:Prairie grass preservation shall be enjorced surrounding the wetland on the southerly boundary of the property.Access is oJ�' of Outlot E from County Road 6. Lot 2, Block I: This lot is praposed as a lakeshore lot with approxilnately 240 feet in width at the lake and will have 3.39 acres, of which 3.0 acres is upland. This lot is proposed to be served via a 30-foot driveway oufilot (Outlot G) off of the private road and therefore is defined as a "back lot". Back lots have additional dimensional requirement of 150% of the zoning district requirement or in this case 3.0 acres is the minimum required, aud setbacks must also meet 150°/a of the sta�ndard. There aze also azeas of steep slopes on this pro�erty, up to 20% at the steepest. It would be appropriate to show rthe required setbacks on the prel'uninary plat drawings to show where a house might be developed on this Lot.