Salinity Management Pipelines, Phases 1A through 1C (54" and 48")
- Owner: Calleguas Municipal Water District
- Cost: $30,360,000 (total for three phases)
In efforts to develop new local water resources by removing high salinity from groundwater within Calleguas Creek Watershed in the County of Ventura, Calleguas Municipal Water District has taken a lead role to construct a pipeline to discharge saline water and effluent from numerous wastewater treatment plants. The proposed pipeline, when completed, will be approximately 35 miles long traversing from west Simi Valley to the Pacific Ocean in the City of Port Hueneme. The pipeline is planned to discharge into the Pacific Ocean through an outfall structure.
Perliter & Ingalsbe was brought on board to provide engineering services for all of the phases, 1A, 1B, and 1C. Majority of the pipelines are located in unincorporated areas of the Ventura County, California. On east side, it begins near intersection of Portrero Road and South Lewis Road and ends near intersection of Edison Drive and Hueneme Road on west side.
These projects included a wide variety of components, complex design tasks, difficult and time consuming permitting process, extensive coordination efforts and preparation of many drawings and detailed specifications involving civil, mechanical, structural, and traffic control engineering disciplines.
Major Components and Special Features:
- Approximately 33,000 feet of 54” and 48” HDPE and PVC pressurized pipelines
- Construction across California Highway 1
- Numerous microtunneling and jacking operations to install casings under creeks, major road intersections, and highway
- Special blow-offs
- Air vacuum and air release valve assemblies and manholes
- Extensive excavation, trench shoring, and special fill and backfill
- High groundwater and dewatering
- Permitting from numerous agencies including Caltrans, Department of Industrial Relations Mining and Tunneling, Ventura County Watershed Protection District, County of Ventura, and Department of Fish and Game
- Excavation through hazardous material and archeologically sensitive areas
- Narrow and busy roads with existing utilities
- Limited staging and storage areas
- Complex traffic controls
