Infrastructure Maintenance Projects

Cured in Place Pipe System (CIPPS)

The CIPPS Project involves precleaning and jetting old clay sanitary sewer lines and then lining with a flexible resin liner that helps to reduce inflow and infiltration. It’s important to reduce I&I as this creates additional, unnecessary treatment of groundwater as it is sent to the Wastewater Treatment Facility.  This process also helps extend the life of sanitary lines. 

The first step is jetting which consists of using a "Jetter Truck" that carries 1,200 gallons of water and 600 feet of hose to clean sewer mains. The hose is fed down through a manhole into the main sewer lines. Once the hose is in place, a pump is turned on to send water through the hose and out a specialized jetting nozzle that operates at roughly 1200-1800psi. The nozzle is fed upstream to the next manhole (typically 300-350 ft runs) and then pulled back slowly to loosen up and remove the debris that are built up in the pipe. This debris ranges from wipes, sand/grit, grease, and solids. Once the solids are pulled back to the manhole, they are either flushed downstream or vacuumed out into the debris box of the Jetter/vac truck.

City residents may experience gurgling noises and the occasional odor. Residents and business owners are advised to fill their drain traps after the jetting is completed in front of their house or business. The vacuum that is created during the cleaning process may pull water out of the traps leaving them dry, which can cause odors. It is recommended that, if possible, residents leave their toilet seats down to avoid infrequent, but potential air coming up through the toilet. The contractor will utilize as low pressure as practical to prevent this, but it may happen on occasion depending on various factors. 

Overlays

Overlays typically involve milling the top layer of the street surface and installing a new bituminous layer, significantly improving the street’s condition. This type of work results in a significant improvement in pavement condition and drivability and extends the life of the roadway. 

Crack Sealing & Seal Coating

Crack Sealing and Seal Coating is a preventative maintenance project that helps to preserve the life of roadway surface and is typically completed 3-4 years following a reconstruction or overlay.

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