2018_11-27_PWETCpacket - Laserfiche WebLink

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Road C that will be constructed in 2019 A new sidewalk will be installed on the south side of Old Highway 8 between Troseth and County Road D. The City Hall parking lot will be reconstructed. The city will install PaveDrain permeable pavers in the parking lot similar to Cedarholm Community Building for storm water treatment. Utilitv 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. Over time the joint materials have failed allowing root intrusion. The pipe is also susceptible to cracking and construction damage. The 2019 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 2019 approximately 4.6 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 watermain replacements in the following locations: • City Hall Parking Lot, Civic Center Drive to Lexington Avenue • County Road C2, Lincoln Drive to Snelling Avenue 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 2019. This lift station was built in 1956. The updated lift station will be converted from a wet well/dry well configuration to a wet well/valve vault configuration. This eliminates the need for the building structure on top of the lift station. The change in configuration is a less expensive upgrade and makes maintenance of the lift station easier. The project will also include replacement of pumps, valves, electrical equipment, and generator and add a new protective coating to the wet well.