12/19/2001 Env Bd Packet - Laserfiche WebLink

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�xlibib I STAFF ORIGINATOR: Marty Asleson DATE: September 19, 2001 TOPIC: Pheasant Hilis Preserve 12th Addition, Preliminary AGENDA ITEM Plat/PDO, Comp Plan Amendment - MUSA BACKGROUND: Pheasant Hilis Preserve 12th Addition is the area in the Wards Lake Subwatershed district known as the "island ". Intentions of the developer are stated in the September 10 cover letter to Jeff Smyser from Loucks and Associates. This is a planned development overlay proposal. Seet 2 CI 206 1 Ovirbureortit 3004 The island is in Wards Lake. Wards Lake is public water. Access to the island is proposed through the construction of a bridge. A DNR permit has been issued for this bridge crossing and stormwater outfalls. Tom Hovey from the Minnesota Department of Natural Resources points out that this permit should not be interpreted as support for the proposed development. The site is within the shoreland district and is subject to the City of Lino lakes shoreland ordinance. Our shoreland ordinance lists this lake as a Natural environment basin. Setback requirements are 150 feet from the ordinary high water for any building structure. The shore impact Zone is 75 feet from the shore is an area defined as that area where no vegetation removal is allowed, and house setbacks must be at least 50% of the distance from the structure to the Lake. It is virtually impossible to meet the City Shoreland Ordinance with this development proposal. The grading plan shows literally every part of the island graded for eight single - family dwelling lots. All vegetation would be removed. According to the Anoka County Sand plain pollution sensitivity cover, the area to the north and west, and heading to the south is very sensitive to potential for aquifer contamination. This area has an estimated travel time for contaminants to reach the uppermost aquifer in the "hours to minutes" range. Mr. Hovey makes a recommendation consistent with previous Environmental Board recommendations to reduce impervious surfaces and maintain runoff volume and rate discharge rates to pre - development levels through appropriate landscaping, impervious reduction, and ponding use. Tom makes an additional point to say that in all likely hood homeowners will want to excavate the wetland in the shoreland area to have open water close to their houses, and avoid planting vegetation that would block their view of the lake. He recommends covenants to be put in place that would further restrict landowner activity in the Shore Impact Zone and Lake if development proceeds on the island.