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Memo to Planning Commission/ZC 99-7,P 99-10, CU 99-30 August 24, 1999 Page 2 • Overview Bridgeland Development is proposing a Planned Unit Development, Preserve Estates, for a 74.7 acre parcel located north of Oak Meadows subdivision, south of Knollwood, east of Tyler Street and west of Trott Brook. The development, as proposed, consists of 27, roughly 1 acre, single-family residential lots. In addition, 50% of the site will be open space protected from further development by deed restriction and held in common through a homeowners association. The open space will contain a walking trail, most likely a mown trail that winds through the open space partially along an existing farm road. The site was previously a small farm with some feed crops and cattle. Through the center of the site between the pond and wetlands is a ridge with woods and fields. The site has many constraints on development with its topography, wetlands, woods and surrounding existing development. Both the pond and the Trott Brook are in the Shoreland Overlay District, DNR protected and subject to the restrictions of the Shoreland Ordinance. The existing farmhouse will remain and be incorporated into one of the lots. Proposed Development Plans The site layout consists of 27, roughly 1 acre lots fronting on a new road connecting Polk St. and Tyler St. that lies on a ridge between the pond and wetlands and on a • road spur to provide future access to the Larson property to the north. The DNR protected wetlands, under the Shoreland Ordinance, provide the greatest site constraint. On the west side of the site is a Type 3, 6.01 acre, pond and on the east side of the site is the Trott Brook. Shoreland Ordinance The Department of Natural Resources has specific classifications for different types of water bodies through out the City of Elk River. The pond is considered a Natural Development Water, which has certain restrictions that extend 1000 feet beyond the ordinary high water mark of the pond. The Trott Brook is a considered Tributary Stream, which has certain restrictions that extend 300 feet beyond the ordinary high water mark of the Trott Brook. Almost all of the parcel falls within this restricted area and is subject to the Shoreland Ordinance and the criteria to preserve the integrity of the natural resources. Under the Shoreland Ordinance, the site can be divided into tiers of 400 foot increments radiating out from the pond. Preserve Estates has 3 tiers from the pond and most of the development occurs within the second tier. None of the development occurs within the Shoreland of the Trott Brook. Generally, the Shoreland Ordinance allows a certain density of development within each tier. Some of the "base density" from one tier may be transferred to the next • as long as that tier is further away from the pond. Besides "base density," an increase in density can be achieved by meeting various performance standards such \\elkriver\sys\shrdoc\planning\stevewen\pcmmo\p99-10.doc