Sewer Rehabilitation Projects
Yearly, the Public Works Sewer Utility hires Contractor (s) to rehabilitate deteriorated city owned sewers by installing sewer liners. Instead of digging up the street and installing a new sewer pipe, the sewers are repaired by installing a pipe liner within the existing sewer. The sewer liner creates a new long-lasting pipe within the old sewer.
City owned sewers are inspected on a ten year cycle. When a sewer is inspected, a pipe rating is created. Based on review of the sewer inspection data, we determine if and when a sewer needs to be rehabilitated. We do try to coordinate sewer rehabilitation or lining work with street reconstruction projects; it isn’t always possible due to time and budget constraints.
The process of lining a sanitary sewer involves cleaning the sewer and then constructing a sewer liner.
The City has been rehabilitating sewers by installing liners since the 1990’s. There is about 800-miles of mainline sanitary sewer. Over 200-miles of mainline sanitary sewers have been rehabilitated with sewer lining. Yearly, we line about 10-miles of sewer.
Sewer liner construction is done without excavation by:
- Inserting a resin saturated felt tube made of polyester through existing manholes.
- The resin in the felt tub is cured by a boiler that circulates hot water or steam.
- Connections to private sewer services are restored by the use of a robotic cutter.
There is a potential for properties to experience glue like smells during the sewer lining process. To reduce the possibility of smells, on the date of sewer lining, we request that you pour about one gallon of water into all floor drains and seldom used sinks and wash tubs; this will restrict potential odors from entering your property.
Citywide Sewer Lining Projects
Instead of digging up the street and installing a new sewer pipe, the sewers are repaired by installing a pipe liner within the existing sewer. The sewer liner creates a new long-lasting pipe within the old sewer. Yearly, we line about 10-miles of sewer.
These documents are PDF's if you need assistance reading or accessing these documents please call (651) 266-6234.
Current sewer lining project map *Note: This is a City wide map. Please pan and zoom to the area you’re interested in for increased readability.
2020 Project Schedule Updates
This narrative will provide a look ahead at what work is anticipated to take place for the next 14 days.
Our work is weather dependent including but not limited to; precipitation, wind, lightning, frost, snow, excessive heat, cold or other hazards that may cause unsafe work conditions.
Anticipated Lining Schedule
Week of 11/23/20:
- Monday – Como Ave, Pascal to Hamline. Sheet 41, line segments 338270 and 338269.
- Tuesday – Como Ave, Pascal to Hamline. Sheet 41, line segment 320665.
- Wednesday – No work.
- Thursday – No work.
- Friday – No work.
Week of 11/30/20:
- Monday – Como Ave, Pascal to Hamline. Sheet 41, line segments 338268 and 338267.
- Tuesday – Como Ave, Snelling to Pascal. Sheet 40, line segment 366982.
- Wednesday – Como Ave, Snelling to Pascal. Sheet 40, line segment 366981.
- Thursday – Hague Ave, Fairview to Herschel. Sheet 52, line segment 331082.
- Friday – Otis Ave, Riverwood Pl to Marshall. Sheet 49, line segment 326546.
The City sends a postcard to property owners and residents who’s private sewer services are connected to the sewer being rehabilitated.
2020 Project Letters
Postcards to property owners and residents whose private sewer services are connected to the sewer being rehabilitated.
- Sewer Rehab in Ward 1
- Sewer Rehab in Ward 2
- Sewer Rehab in Ward 3
- Sewer Rehab in Ward 4
- Sewer Rehab in Ward 5
- Sewer Rehab in Ward 6
- Sewer Rehab in Ward 7
The Contractor will coordinate their efforts with the property owners and the City, by providing:
- Businesses and Residence whose sewer service will be affected will receive:
- A notice of sewer lining work one week in advance; and
- A notice of sewer lining work one day in advance.
Sound Level Variances
When we perform sewer lining work during the evening / night time hours, we limit noise to idling trucks, backup alarms, pumps, boilers, and workers. We work to limit noise levels to 80 DBA or less at a distance of 50-ft. from the work area.
Variances to the City’s Noise Ordinance are requested through a public hearing in two situations:
- Where sewer lining is occurring on larger diameter sewers; lining large diameter sewers often requires 24-hours of continuous work.
- When the City requires the Contractor to work during overnight hours to mitigate the effects of sewer lining operations on residents, businesses, and traffic.