Pipelines and Pump Stations

Influent Pump Station, Mt. View Sanitary District – Old Pump Station, Small Budget, Big Improvement
Video

Influent Pump Station, Mt. View Sanitary District – Old Pump Station, Small Budget, Big Improvement

2016 Winner of CASA’s Outstanding Capital Project, Small Agency

Project

I-680 at Sabercat Road Sanitary Sewer Relocation Project
Union Sanitary District, California

The I-680 at Sabercat Road sanitary sewer in Fremont, California, is a 12-inch diameter vitrified clay pipe (VCP) gravity pipeline installed about 50 years ago by open-cut trenching.  A CCTV survey revealed that the existing pipeline was severely offset where it crossed the Hayward fault.  The pipeline was replaced using trenchless methods (tunneling) along a parallel alignment 30 feet north of the existing pipeline which allowed the existing pipeline to remain active during construction.  The new alignment is approximately 1,000 feet long, has a depth of cover varying from a

Project

Downtown Sewer Replacement Project
City of Yuba City, California

West Yost designed the relocation, replacement, and/or rehabilitation of existing sewers in the City’s downtown residential area to address structural deficiencies, maintenance issues, and system reliability. The existing sewers were installed nearly 100 years ago and could not be cleaned or maintained due to pipe fragility and lack of access. The challenges of replacing these backyard sewers included access, public outreach, homeowner coordination, design approach, and construction methods for rerouting sewer laterals.

Project

Oak Park Regional Storage
City of Sacramento, California

West Yost designed an off-line storage project to address flooding and assist the City in meeting their EPA issued consent decree to improve performance of the combined system through a new facility to store flows and reduce street flooding temporarily during storm events. These conveyance facilities then allow the stored storm flows to be released back into the combined sewer system.

Project

Sewer Replacements and Rehabilitations
Union Sanitary District, California

West Yost completed a number of sanitary sewer replacement and rehabilitation projects for the District. These projects include the Blacow Road Sanitary Sewer Replacement, Willow Street/Central Avenue Sanitary Sewer Rehabilitation, Lower Hetch Hetchy Corridor Sewer Improvements, and the Lower Warren Avenue Sewer Relocation Projects. Sewer pipeline sizes range from 10-inches to 36-inches in diameter, and services have included evaluation of rehabilitation alternatives (including cured-in-place-pipe [CIPP]), hydraulic analysis, coordination with utilities and property owners, final design, and services during construction.

Project

14-Mile Slough Pump Station
City of Stockton, California

West Yost provided design and construction management services to expand the existing 14-Mile Slough Pump Station (14-MSPS) by nearly 700%. This project represents one of the largest trench-style wetwell pump stations in California. The award-winning pump station upgrade increased reliable pumping capacity from 3.75 mgd to 14 mgd, and with a buildout capacity of 22.5 mgd.

Project

Northeast Industrial Phase 2 Sewer and Water Improvements
City of Tracy, California

West Yost provided predesign, and design services for the Northeast Industrial (NEI) Phase II sewer and water improvements project. The project included sewer main designs, a collection system pump station upgrade, and new water transmission mains.

Project

Central Trunk Sanitary Sewer Rehabilitation
Sacramento Area Sewer District (SASD), California

West Yost provided preliminary and final design of one of the largest cured-in-place-pipe (CIPP) projects in the US, to rehabilitate approximately 44,700 feet of sewer using an innovative liner material (iPlus®). The trunk line is 42-inches to 60-inches in diameter and runs under major streets, residential backyards, creeks, a freeway, through protected wetlands, and near many homes, schools, and businesses. Approximately 3,000 feet of the Franklin Trunk is also included in the project.

Project

Yolo Force Main Design
Sacramento Regional County Sanitation District, California

West Yost managed the design of the Yolo Force Main, which is one of eight projects in the Lower Northwest Interceptor Sewer system. The Yolo Force Main project included approximately 25,000 feet of dual 66-inch diameter force mains and microtunneling of twin 84-inch crossings under Babel Slough.

Project

Condition Assessment & Rehabilitation Design
Marin City, California

West Yost performed a condition assessment of the District’s Marin City collection system and designed approximately 14,000 feet of sewer rehabilitation and repairs.

Project

Flag City Pump Station & Force Main
San Joaquin County, California

 

West Yost provided planning and design services for the conversion of the Flag City Wastewater Treatment Plant to a lift station and force main system.  The project included the design of a 0.73 mgd lift station and 13,200 feet of dual 6-inch diameter force main. 

Project

Auburn Ravine Lift Station
Placer County, California

West Yost provided an award-winning project for Placer County that provided a cost conscious solution to the rehabilitation of the Auburn Ravine Lift Station (ARLS).

Project

Peña Adobe Lift Station and Force Main
City of Vacaville, California

This project included an evaluation  of alternatives to serve the new Lower Lagoon Valley development. The project evaluated various options including gravity sewer and lift station alternatives. The selected project included a new 1.6 mgd lift station with a biofilter for odor control and approximately 2,500 feet of dual 8-inch diameter force mains.

Project

Marin City Condition Assessment & Rehabilitation Design
Sausalito-Marin City Sanitary District, California

West Yost performed a condition assessment of the District’s Marin City collection system of approximately 32,000 feet of gravity sewers and designed approximately 14,000 feet of sewer rehabilitation and repairs.

Project

College Oak Drive Pump Station
Sacramento Area Sanitation District

West Yost designed a new gravity sewer and 2 mgd lift station to replace an existing 12/10/8-inch siphon pipeline that was performing poorly and was difficult to maintain. Services completed by West Yost included surveying, permitting, design, and right-of-way services. The project included distribution of 480-volt power, and instrumentation controls and communication via radio with SCADA.

Project

Bay Point Sewer Rehabilitation
Delta Diablo Sanitation District, California

West Yost provided engineering services for the replacement and rehabilitation of existing 8-inch and 12-inch diameter sewer mains at various locations within the Bay Point Area of Pittsburg, California.

Project

Brooklane Wastewater Lift Station
City of Corvallis, Oregon

West Yost designed a new lift station to replace the existing Brooklane Lift Station. This replacement was necessary because current flows exceed the capacity of the existing station. The new 17 mgd lift station included a 30 feet deep, self-cleaning, trench style wet well, a below grade covered valve and piping gallery, and an electrical generator building partially over the wet well and valve gallery.

Commands