04/13/2016 P&Z Packet - Laserfiche WebLink

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A 70 foot wide private utility easement extends across the southwest corner of the site. A 15 foot wide Access/Maintenance and Trail Easement also extends across the southwest corner of the site. A gravel road exists over this easement for access and maintenance to the existing sanitary sewer main. St. Paul Water Works also owns a 50 foot wide strip of land across the northwest corner of the site. Stormwater Management and Erosion and Sediment Control The concept plan depicts 5 stormwater treatment ponds. The site consists of both A and B/D hydrologic soils which are a combination of drained and un-drained soils. Wilkinson Lake has been designated as an impaired water by the MPCA for nutrients. Based on the approved Total Maximum Daily Load (TMDL) requirements water care should be taken to improve water quality entering the lake. Infiltration of stormwater is required where feasible. The City stormwater management performance standards also dictate that stormwater runoff be conveyed in facilities open to the atmosphere rather than enclosed pipes. The opportunity to connect the proposed pond system with a vegetated corridor rather than pipe should be evaluated. Additional comments: • A stormwater management plan and erosion and sediment control plan in accordance with Chapter 1011 shall be required. Utilities Public water, sanitary and storm sewer utilities will be installed within the development. The site is located in Sanitary Sewer District 4 (Sub -district 4A) and is ultimately served by White Bear Township. An existing gravity and force main sanitary sewer bisects the southwest corner of the site. This was installed to serve the North Oaks Rapp Farms development and is connected with White Bear Township. An existing watermain also bisects the site and serves the North Oaks Rapp Farms. Public water will also be served by White Bear Township. Additional comments: • A Joint Powers Agreement between Lino Lakes and White Bear Township will be required for watermain and sanitary sewer service. • The existing watermain and sanitary sewer main will need to be relocated since several of the single family lots are shown over the utilities. 7