The City of Lincoln City has been working on planning to bring sewer service to the East side of Devils Lake. The city has shared the first draft of the Devils Lake Sewer System Pre-Design Report with the Devils Lake Neighborhood Association. The DLNA is looking for interested members who are interested in working with the City and the Devils Lake Water Improvement District on this important project; let us know if you would like to be involved. This report is step one of the project and the City is providing us the opportunity for input, day one. The report contains a great deal of valuable information, we encourage all to download and review the material. Let us know your thoughts and comments and we’ll pass it along, or feel free to contact the City directly. While we don’t know much at this point about the possible timelines we do know from the report that it will take in excess of $7 million to construct the system.
According to the report…
The project entails the extension of sewerage to the currently un-sewered area located north and east of Devils Lake in the City of Lincoln City, Lincoln County, Oregon. Within this area, the City provides water to 442 predominantly single family residential accounts. Each of these accounts is associated with an on-site wastewater system (typically a septic tank and drain field). Each of these systems will be eliminated once the connection is made to the new sewer. The new collection system will connect to the City’s wastewater collection system where there is adequate capacity to convey, treat, and dispose of wastewater from the project area.
The selected type of collection system is a low-pressure sewer also known as a grinder pump system. A house’s building sewer is connected to a buried tank that houses the grinder pump which reduces the size of any solids present and pumps the wastewater through a relatively small diameter service line to the mainline sewer in the public right-of-way. The collective operation of the individual pumps pressurizes the mainline system and conveys flow to the City’s existing West Devils Lake Road & 101 Pump Station and from there to the City’s existing gravity sewer system. Since the grinder system is pressurized, the mains can be smaller and shallower than typical gravity sewer construction thereby minimizing the construction effort and impact and reducing associated costs.
The City selected the low-pressure sewer alternative after consideration of other systems and their suitability for the area and compatibility with the City’s existing system and overall objectives.
