Insituform’s Mack Meher checks the water flow that fills the white resin impregnated fabric lining that goes down the manhole here, and through the existing 50 year old sanitary sewer pipe, to the next manhole, on Tuesday, July 19, 2011; part of Buena Vista Township Phase II Sewer Project, in Michigan, where the United States Department of Agriculture funded the refurbishment and rehabilitation of 45,500 linear feet of defective sewer pipe, and more than 200 manholes; on Tuesday, July 19, 2011. The project includes the construction of an off-site excess flow basin; construction of a pump station; and improvements at the wastewater treatment plant. The system will serve 2,349 residential and 177 commercial customers and will bring the township into compliance with environmental regulations regarding pollutant discharges.
Inspections revealed that the 1960s sanitary sewer system had inflow from storm and rainwater systems and overflowed into the sanitary sewer system. Infiltration was found in the form of cracks, and other failures that allowed groundwater to enter. Rather than digging up the old system, rehabilitation with a cured-in-place-pipe (CIPP) method was chosen. This provides up to a 50% savings and the liner is projected to last 50-100 years. CIPP repair of the 8-30” diameter pipes involves pulling a resin-saturated fabric liner through a damaged pipe, which is then cured with steam or hot water to form a tight-fitting, joint less replacement pipe. Trenchless repair methods require less digging than traditional “dig and replace” repair methods and minimize damage to yards and landscaping. There are two of these teams and one manhole rehabilitation to seal the underground casting frame or brick structure. They process 600-800 feet per day.
Wade Trim Inc. Professional Engineer Tiffany Harrison said about working with the United States Department of Agriculture’s Rural Development “It was very easy, they make it very straight forward, in what paperwork they need. They were always available for questions.
USDA Rural Development has funded water and sewer projects in 117 Michigan communities serving more than 94,000 customers.
Senior Advisor to the Secretary of Agriculture Doug O’Brien said, “America will win the future by out-building, out-educating and out-innovating the world,” O'Brien said. “The Obama Administration is committed to the residents and business owners of Buena Vista Township in building the infrastructure needed to protect our environment and ensure clean water for future generations.” Being almost entirely surrounded by the Great Lakes, Michigan residents know that a small problem upstream usually leads to much bigger problems downstream and that the impact of water pollution extends far beyond the immediate community.
USDA photo by Lance Cheung.