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Council authorizes trenchless stormwater pipe restoration at five sites; staff to test two lining methods
Summary
Midwest City approved two contracts to repair stormwater pipes at five locations using trenchless methods: a UV-cured cured-in-place lining and a spray-in-place lining. Staff said the approach reduces surface disruption compared with open-cut repairs.
The Midwest City Council authorized the city manager to execute contracts for trenchless stormwater pipe restoration at five locations after public works staff described two trenchless repair methods and their benefits.
"Trenchless stormwater pipe repair is not a new technology," Public Works staff member Carrie said, describing how cured-in-place pipe (CIPP) lining and spray-applied linings repair pipes from the inside without extensive excavation. Carrie explained the UV-cured method: "They'll expand it so that it basically blows up like a balloon and sticks to the pipe there. And it's a thin enough material, but it's also structurally sound enough that it won't decrease capacity, but it'll actually act like a new pipe that has been placed within the old pipe." She contrasted that with open-cut replacements and noted that the Crosby pipe in question runs through backyards and is about 800 feet long, where surface excavation would be disruptive.
Staff told council the contracts will let the city test multiple methods and build relationships with contractors. The council voted to award work to contractors that met a performance specification; transcript references identify contractors as MOCON Pacific (UV-cured CIPP method) and PM Construction & Rehab LLC (spray-in-place method). Public works said the projects are budgeted in the current fiscal year and that the work could provide a model for future stormwater repairs.
Councilmembers asked technical and budgeting questions. One member asked whether a liner could carry load if the host pipe deteriorates; Carrie replied "That is correct. Yes." Council members also noted the public-relations value of limiting surface disruption for residents and approved the contracts by motion.
What happens next Public Works will coordinate contractor mobilization, perform pre-construction notifications to affected residents, and report back to council on results and performance. Staff requested additional funds for stormwater repairs in the next fiscal year to expand similar efforts depending on outcomes.
