Agenda - Council - 01/11/2016 - Laserfiche WebLink

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class 5 modified specifications and is therefore proposed to be used to augment the aggregate base class 5 product produced by the pavement reclamation process. Irri ate ion Systems: Staff estimates approximately 90% of the properties along the project corridor have private irrigation systems, and the City has typically repaired private irrigation systems that are damaged as part of a street reconstruction project. Staff therefore added a line item to the engineer's opinion of probable costs for this repair work, and entered an amount of $1,000 per parcel. Staff will contact each property owner before construction begins and offer to provide flags to the property owners so they can mark the locations of their sprinkler heads to help the contractor avoid impacts to their systems. Parking Restrictions: Parking is currently provided along both sides of the streets and is not currently restricted except for overnight parking per City code. As a result of this project, the City will need to more vigorously enforce parking restrictions since parking will only be provided along about 35% of the project corridor on one side of the street. 4.2 Stormwater Treatment The existing drainage and storm sewer system requires improvements including adding concrete curb and gutter and providing additional catch basins along curb lines to reduce the width of stormwater encroachment onto the pavement surface during rainfall and snowmelt events. Sub - drain pipe will also be added along the outside edges of subgrade correction at low points to ensure adequate subgrade drainage. Stormwater retention and/or treatment improvements may be required for this project since the street is proposed to be widened up to 8 feet over approximately 35% of the project corridor, resulting in a net increase of connected impervious area of approximately 0.65 acres. Staff will evaluate the need for additional stormwater retention and/or treatment improvements using stormwater modeling during the design process. If needed, stormwater outlet pipes and ponding facilities will be increased in size, and structural pollution control devices and/or surface treatment improvements such as infiltration basins or trenches will be constructed. The engineer for the Lower Rum River Watershed Management Organization will be consulted to determine whether infiltration practices will be required with this project. 4.3 Water Main Improvements No watermain work is proposed with this project. 4.4 Sanitary Sewer Improvements No sanitary sewer work is proposed with this project. Feasibility Report Andrie Street and 164th Lane Reconstruction City of Ramsey Project No. 16-00 Division C Page 11