07-12-2004 Council Packet - Laserfiche WebLink

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The installation of curb and gutter along both the north and south sides of fiirch Lane, and re grading the street to include a crown in the center, was discussed. The consensus was that this solution was the most equitable and would increase the gutter capacity to convey water down to the naldur Park Road intersection. Proposed Project I he proposed project is to install surmountable concrete curb (curb that can be easily driven over) along the first 250 feet of Birch Lane to prevent the water in the street from Bowing towards the hou.ses and garages. The road will be re graded and crowned, so the water flow's into the curb and gutter along both sides of the street. There will be new, more efficient catch basins installed on both the north and south sides of Birch l.ane at the Ihildur Park Road intersection. The existing storm sewer pipe along Baldur Park Road will continue to convey the flow from the catch basin on the south side of Birch Lane, and a new pipe will be installed to convey the flow from the catch basin on the north side of Birch Lane. This will pn)vide for additional flow capacity from the intersection area Project Options 1 here arc several options for the installation of the storm sewer pipe neces.sary to convey the flow from the catch basins on each side of Birch Lane at the Baldur Park Road intersection. Itach provides a similar increase in storm water flow capacity. Lach option also has its own set of advantages and disadvantages. 1 he option ol connecting both catch basins to the existing 8" storm sew'cr pipe that runs to the south along Baldur I’ark Rt»ad was dropped from consideration because of the limited capacity of this pipe New Pipe it) Baldur Park Road One viable option would be to install a new 12" pipe in Baldur I’ark Road to ct>nvcy the drainage from the north side of Birch I.anc. This new pipe would be parallel to the existing 8" pipe that is located along the eastern edge of Baldur I’ark Road. These two pipes would then both drain into an existing 15" culvert under North Slu>ie Drive which outlets to Crystal Bay. The advantages of this option are that it does not require any easements or removal of existing landscaping, and it provides increased capacity Ihe disadvantages are that it increases the amount of storm water flow directly into Crystal Bay. requires the excavation and restoration of a pin tion of lialdur Park Road for the installation of the storm sewer pipe under the road, and increased street maintenance caused by the pipe under the load moving up and down with the free/e and thaw cvclc. Pace 2 of 4