The Tolt Pipeline runs from Chester Morse Lake in the Cascade Range to the City of Seattle, supplying the city with about 30% of its water supply. It passes through Seattle’s northern eastside suburbs and also supplies several suburban cities and water districts. After a major pipeline failure, premature corrosion was found to be reducing … Continue reading Tolt Pipeline Number 1 Rehab Phase 3B →

The existing sewage collection system in the City of Grants Pass is comprised of 23 separate drainage basins and a total of about 0.8 million feet of sewer pipelines ranging in size from 4 inches to 42 inches in diameter. Approximately one-half of these sewers are at least 50 years old, with most of the old pipes … Continue reading Pine Street Sanitary Sewer →