The City of Sedalia’s sanitary sewer and collection treatment system project is nearing the home stretch, as all work must be completed by July 1, 2016, per an administrative order of consent from the Missouri Department of Natural Resources.
Only a year remains on the $30 million project, which was started roughly five years ago. Now crews are working on the south side relief sewer project portion of the overall project, with work to begin on the north side in a few weeks, said Devin Lake, Public Works Project Manager.
On Wednesday, crews were working on replacing sewer lines near 11th Street and New York Avenue, 12th Street and Madison Avenue and 16th Street and Marshall Avenue.
“This is part of the relief sewer project. They are currently upsizing lines there to larger lines,” Lake said. “They will be moving south of there, a little north of 11th Street, and moving south toward the current yard waste facility on New York Avenue. That is their stopping point.”
The same project is slated to begin in a few weeks on the north side of town near the North Wastewater Treatment Plant, located off Georgetown Road. Lake said crews will move their way south, not going any further than Main Street.
She said the reason for upsizing city sewer lines is twofold.
“We can’t eliminate all stormwater that enters our system, so upsizing will help with capacity, and it’s also for the future,” she explained. “We have three treatment plants, which is very unusual for a city of our size. Hopefully in the future we can consolidate to two treatment plants or one plant to handle treatment. To do that, you have to plan for the flow when that occurs, so it’s kind of a double-edged sword why we’re doing this; it will increase capacity now for stormwater and increase capacity later for when we do consolidate our plants.”
Lake said this portion of work is scheduled to be completed in March 2016, several months ahead of the DNR deadline. She said that extra time will allow for monitoring.
“Everything is on schedule (to be completed on time),” Lake said. “The reason we want to be done by March is so we can have our rainy season to do flow monitoring to see our progress. We’re making that the drop dead date that it has to be completed and sewers must be functional by that date, so we can report to DNR, here’s what it was seven years ago, here’s the improvements we’ve made and we’ve decreased our flow by whatever that number may be.”
As the project progresses, residents should keep an eye out for closed roads due to the sewer construction, as Lake said they can expect to see more street excavation with this phase of the project than in the past. She said the roads are closed during the day for work, but open up at night to allow residents through. She also noted that local emergency services are made aware of all closings so dispatch can reroute emergency vehicles as necessary.
The final project from the order of consent will be the EQ2 project, which will see the construction of an equalization basin near 28th Street and New York Avenue. Work has not started on this phase.
“We can’t eliminate all inflow and infiltration that comes into the sewer lines, so during heavy rain events when the plants can’t handle the flow, it can be diverted to the equalization basin and stored there until the rain subsides and the plant goes back down to normal levels. Then we’ll release it into the plant and process it at that time,” Lake said.
“We have three current basins that we use, however we did not have the capability prior to this project being able to reroute that water back to the plant.”
Nicole Cooke can be reached at 660-826-1000 ext. 1482 or @NicoleRCooke.