Denver Water has an active pipeline rehabilitation program targeting aged metallic distribution and transmission pipelines with a history of leaks and repairs. For the past few years, Denver Water has been utilizing cement mortar lining (CML) as a preferred rehabilitation technique for existing cast iron and other metallic pipeline infrastructure. Denver Water intended to use this same type of CML rehabilitation as part of the Ashland Project with Conduit No. 1 on a 36-inch cast iron transmission line estimated to be close to 100 years old. Instead, Denver Water rehabilitated the pipeline using a sliplining method along with Fusible PVC® pipe.
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