Nebraska-based Midlands Contracting will begin a $ 240,000 program to repair approximately 2 miles of sanitary sewer lines along select roads in Hays in mid-April.
The project is part of the city’s sewer repair work, scheduled annually for the spring and summer.
Water Resources Director Jeff Crispin said the Midlands outside of Kearney is expected to be ready by July 1st.
The project includes installing polyester resin liner in approximately 10,000 feet of linear sewer pipes, removing 19 invading faucets that are slowing or clogging plumbing, and removing debris to 300 linear feet, Crispin told city commission on Thursday.
The city has commissioned sewer repair work annually since 2013 after a video inspection of the pipes revealed the exact locations of faucet intrusions, cracks in pipes, sagging pipes and other problems.
In 2019, the city commissioned a building contractor for the first time with the lining, the so-called cure-in-place pipe. At the time, the city was repairing nearly 5 km of sewer pipes.
On-site repairs were carried out in 2018 and 2020, said Crispin during the regular meeting of the city on Thursday evening in the town hall, 1507 Main.
Midlands offered the lowest price of five bidders for the 2021 program.
New pipe lining
The general area for repairs is in city blocks west of Vine and south of 27th Street, from Hall and Elm Streets east to Allen Street. That includes quite a long stretch of 13th Street, Crispin told the commissioners.
“All of these projects,” he said, “are manhole-to-manhole problems.”
The sheds are being removed from under a section of the downtown railway line.
Cure-in-place liner is trenchless and doesn’t require Midlands to dig the 6, 12, and 21-inch sewers, Crispin said. The technology fixes multiple cracks in a line or in broken areas.
“It’s a polyester resin. You pull it through a manhole, you blow it up with steam water and it inflates and hardens for a period of time and it’s like a new C900 PVC pipe, ”he said. “It takes care of infiltration and leakage and reduces this enormously.”
The lining is a 6 millimeter coating.
“That’s almost a quarter of an inch,” said Crispin. “When you look at that, it looks almost like a piece of PVC.”
While the feed has a one-year guarantee, it has a 50-year life expectancy, he said.
Penetrating faucets from houses are pushed into sewers when a house or other structure shifts and the ground settles, he said.
“We want to make sure these are on the ground and looked after so that there are no obstacles and the sewage can flow straight through,” said Crispin.
These connections are then reconstructed using the pre-inspection video, which accurately records their location.
“You are returning to this place with a cutter. But right at the hole for the private tap there is a small dimple that helps them. … Then go back and put the tap back on, ”he said. “Then the customer is ready to go again.”
Midlands Contracting built the waterline at the new booster station on 41st Street north of Interstate 70, he said.
“You did a great job,” said Crispin. “The same project manager.”
The company has completed 150 such projects in Kansas and Nebraska since 2004.
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