06/14/2004 Council Packet - Laserfiche WebLink

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The existing storm water pond located on the south side of Town Center Parkway and west of the City Hall parking lot will be expanded to accommodate the additional drainage area being routed to the storm sewer in Village Drive. Another storm water pond will be excavated on the south side of Town Center Parkway near Lake Drive to eventually receive storm water runoff generated from the widening of Lake Drive. 2.7.2.B. Block 1 and Block 3 A storm water pond will be excavated in the middle of Block 1 to collect runoff from the surrounding parking lot and buildings. A series of underground storm water chambers will be installed under the parking lot to provide infiltration. An 18 -inch storm sewer will be installed between the storm water pond and an existing wetland located north of City Hall. This line will function as a pond overflow. A storm water pond will be excavated on the southerly end of Block 3 to hold runoff from the adjacent parking lot. The pond will be connected to a series of underground storm water chambers to allow for infiltration. A pond overflow pipe will be installed to convey treated storm water to an existing wetland located north of City Hall. Some small drainage areas in Town Center Parkway will be connected via storm sewer to the underground storm water chambers. Pipe sizes will range in size from 15 to 18 inches in diameter. Drainage systems within the parking lots in Blocks 1 and 3 are considered private improvements and are outside the scope of this report. 2.7.2.C. Block 2 A storm water pond will be excavated in the northwesterly corner of Outlot B to receive runoff from Block 2. The pond will discharge to a large existing wetland that abuts the northeasterly side of the proposed development. A storm sewer system will extend southwesterly from the pond to Town Center Parkway and will terminate on the north side of the roundabout. Pipe sizes will range from 15 to 30 inches in diameter. 2.7.2.D. Outlot A A storm water pond will be excavated in the northeasterly corner of Block 3 to accommodate drainage from the south half of Outlot A and from Woods Edge Boulevard between Outlot A and the YMCA facility. The pond will discharge to the existing wetland that abuts the development on the east. A storm sewer system will extend from the pond to Woods Edge Boulevard on the south side of Outlot A and then extend westerly to the entrance to the YMCA facility. Pipe sizes will range from 15 to 18 inches in diameter. A second storm water pond will be excavated in Outlot B to receive runoff from the northerly half of Outlot A. Storm sewer will be extended westerly from the pond to collect street runoff and to serve as a pond overflow for a private storm water pond to be built within Outlot A. Feasibility Report A- LINOL0305.02 City of Lino Lakes Page 8