12-13-1999 Council Packet - Laserfiche WebLink

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Road Dedication and Standards The roads are proposed to be developed to City Standard and dedicated as public streets. The roadways are required to be platted 50' in width and constructed with a 32' road width. The street plans indicate the proposed public roads meet the requirements of the subdivision chapter. Comments from the City Engineer for the latest plan were not available prior to this report being complete, but should be available for the public hearing. The road alignment appears to not create a concern for traffic safety. The Director of Public Services has reviewed the plan and indicated no objection to the proposed road layout and intersection locations. Hennepin County has requested the developer dedicate an additional 10 feet of right of way along the centerline of CSAH 6, for a total of 50'. This dedication will accommodate any future roadway upgradir.g, paths, snow storage and utilities. The developer must also receive appropriate permits from the County if any utility, trail or drainage work is required within the right of way. Wetlands and Stormwater Treatment Ponds The site does contain several City protected wetlands. Any proposed alteration of a wetland or land within 26' of the wetland will require a variance from the City. Wetland alteration will also require outside agency review by the Minnehaha Creek Watershed District, DNR and the Corps of Engineers. All wetlands designated by the City of Orono are not included as lot area for the purposes of zoning. Wetland Delineation report, completed by Kjolhaug Environmental Services Company (August 25,1999) has determined the total acreage dedicated to wetlands within the 58 acre site is 6.54 acres. Acres Dry 51.89 Acres Wet 6.54 Total Acres 58.43 Any filling of wetlands will be mitigated on site. The previous proposal mitigated within the open space outlot to the north. The plan proposes three stormwater treatment ponds. Two ponds are located within the conservation outlot and a third is located to the rear of lots 9, 10 and 11 , Block 1 . The Three ponds would treat the runoff for approximately 2/3s of the development. Staff has briefly discussed this issue with Marty Campion, Engineer and Survey for Otto and Associates. Mr. Campion stated most runoff from the southern 1/3 of the development can be treated by a forth pond being located within the 1^2522 The Bancor Group County Road 6 (County^ Road 6 and IVillow Drive Sorthf SubJtvision/Rezomng a 15^99 page-3