2019_11-26_PWETCpacket - Laserfiche WebLink

Home

Some additional sidewalk and pathways will likely be constructed with private development if no current pathways exist particularly if the project is adjacent to a County Road. Utility Infrastructure: Sanitary Sewer Lining: The majority of the city's sanitary sewer mains were constructed in the late 1950's and early 1960's, utilizing clay tile pipe and reinforced concrete pipe. Overtime the joint materials have failed allowing root intrusion. The pipe is also susceptible to cracking and construction damage. The 2020 Capital Improvement Plan recommends funding for a sanitary sewer main lining program to extend the life of our sanitary sewers by 50 years or more. This technology essentially installs a new resin pipe inside the old clay tile sewer main without digging up city streets, which results in minimal disruption to residents during construction. The liner pipe is inserted into the main through existing manholes and cured in place with a heat process. Any given segment is usually completed in one working day. Service line connections are reopened using a robotic cutter and remote cameras. During the process, existing flows are bypassed using pumps. This technology has been proven over the past 20 years, and costs have become competitive with open cut replacement. The City started doing this type of renovation on an annual basis in 2006 and will have an annual project for the foreseeable future to replace our aging sewer infrastructure. This technology also reduces infiltration of groundwater into the system and can be credited toward current and future inflow/ infiltration surcharges which are mandated by the Metropolitan Council. In 2020 approximately 7_1 miles of sanitary pipe are schedule to be lined. The location of this work varies and is spread throughout the City based on system priority. Pipe Replacements/Repairs: Staff evaluates sanitary and water main replacement needs in our pavement replacement areas as well as utility infrastructure needs in County and State project areas. To date, city staff has identified 0.88 miles of watermain replacements in the following locations: • Cleveland Avenue, County Road C2 to County Road D • Lexington Avenue, railroad tracks to Woodhill Avenue • Fernwood Street, Larpenteur to Rose Vista Court Staff is evaluating replacing a 400 foot segment of sanitary sewer system along the east shore of Lake Owasso off of Heinel Drive. Lift Station: The Fernwood Street Lift Station, located near Fernwood St and Larpentuer Avenue, will be rehabbed in 2020. This project was originally scheduled for 2019 but was delayed due to the short construction season. The Gaultier Lift Station located near Gaultier Street and S Owasso Boulevard will be rehabbed in 2020. The project will also include replacement of pumps, valves, electrical equipment, and generator and add a new protective coating to the wet well. City staff will perform a feasibility report on the Long Lake Lift station next year to determine the best way to upgrade this lift station in the future. Storm sewer system improvements: Staff continues to analyze the existing drainage systems and localized flooding issues and is identifying mitigation projects. Staff is now working on