Published by Carlie Moore, March 30, 2020
How does a successful CIPP project look to the typical person? Well, it looks like nothing happened at all.
The beauty of what installers do is underground-and that’s how we try to keep it. A big challenge of cured-in-place pipe (CIPP) lining lies in the reason it is chosen over traditional open-cut methods: The only evidence that a crew was ever there would be from the post inspection CCTV video. This requires a solid project management team to provide solutions to problems that may never happen and a crew that is able to communicate and make quick decisions that align with the project managements team’s vision for the project.
The Interlachen Sewer Rehabilitation project was no exception. With a tight knit lake community, a high-water table, narrow roadways and almost no manhole access, this project became a test of innovation and flexibility.
Located in the small town of Fairview, Oregon, about 10 miles east of Portland, is a tight-knit community wrapped around Fairview and Blue Lake. Running along the two lakes is a little more than 11,000 lf of aged sewer pipelines ranging from 6 to 12 in. in diameter. The Interlachen Sewer Rehabilitation project was a great bid package for any installer to pick up; but, the challenge of the location kept many installers at bay. The most challenging issue: the manholes were not located on the roadway. The manholes were located on the lake, leaving three to five hundred feet of fragile “wetland-like” private property, in which a crew had to somehow figure out how to “simultaneously” maneuver a truck to drop off the boxes of liner and the UV curing units.
Iron Horse LLC, located in Fairview, Oregon, saw this not as a hinderance but as an exciting challenge to conquer and dove in head first to the project. As a neighbor to the community, Iron Horse met with the lakeside neighborhood members several times in order to get the public to mutually agree and feel at ease with Iron Horse’s crew joining their community for a couple of months.
After the project was awarded, Iron Horse’s project management team went to work on a solution to gain access while trying to cause minimal disturbance to the community. The crew utilized a motorized floating platform to transport crates filled with Impreg’s GRP UV CIPP liners, as well as its UV curing unit. This way, the crew could launch their equipment and the iMPREG Liner from the dock, and avoid damage to property owner’s land (i.e. dragging trailers and equipment on the yards already vulnerable form the high-water table). The last hurdle to jump to put the plan into action was integration with the Multnomah County Drainage District. Usually, the lake is drained at the end of every summer to account for the winter runoff. Fortunately, they agreed to delay the drainage until the portion of the project that required the platform was complete.
The Interlachen Sewer Rehabilitation project so far has continued without delay; besides the holiday break that was requested from the community members. The project is scheduled for completion in February 2020.
Published on TRECNHLESS TECHNOLOGY