2016-11-29_PWETC_AgendaPacket - Laserfiche WebLink

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o Sherren Storm — Staff will be studying additional storm water improvements to this area and possible construction of additional storm water ponds to further reduce street flooding in the area Owasso Private Drive — Currently South Owasso Private Drive consists of a gravel driving surface. The Ramsey -Washington Metro Watershed District inventoried the Private Drive as a direct discharge into Lake Owasso (direct discharge is stormwater running directly into a water body without treatment, and thus potentially carrying a higher amount of pollutants). There are also multiple drainage issues along the Private Drive that affect property owners as stormwater has to circumvent foundations to drain to the lake. This project will add a porous driving surface that will treat the stormwater, and reduce the drainage issues of the adjacent properties by capturing the water and directing it safely to the lake. Alameda Storm Improvements: The inlet and outlet to this ponds are both in need of replacement. The inlet to the ponds has completely failed and is need of replacement. The outlet from the pond is in fair shape but is not functioning properly. There is no skimmer device on the outlet. This allows floatables such as tree debris and algae to discharge from the pond some of which can get stuck in the pipe. Additionally, this pond system discharges into the new Villa Park underground system and the floatables and algae can cause maintenance problems to this system. The outlet is proposed to be replaced and an improved outlet is proposed to be constructed. This storm water pond is also currently being study for possible future sediment removal. • Storm Pond Maintenance — Staff is currently working with a consultant to evaluate which storm water ponds are in need of future maintenance which would include sediment removal. Based on the report, plans will be developed for sediment removal projects in the future. No sediment removal projects are schedule for 2017. • Victoria Street Storm Improvements: Staff will be working with Ramsey County to rehabilitate the existing storm water pipes that discharge to Lake Owasso as this pipe and outlet are in poor condition. The existing pipes will be lined and the existing outlet in the lake will be replaced. • Valley Park Basins: The upper storm water basin in Valley Park is failing. The existing berm is constructed of poor material allowing the pond water to seep the berm causing it to fail. The entire pond will plan to be reconstructed. • Central Park Storm: Staff will be developing a plan to replace a large diameter outlet off of Cohansey St on the east end of Central Park. The outlet is failing and in need of repair. • Staff will begin the design process to replace the Walsh Pond Lift Station located in Midland Hills. The lift station was built in 1973 and needs new pumps, new inlet and new controls. Work is estimated to cost $362,000. • Staff will be working with Rice Creek Watershed District to study adding an Iron Enhanced Sand filter to Oasis Pond. Grant funding is being applied for though the