
Infrastructure
We move water from where nature put it to where people need it!

Experience
Our experts have designed over 100 storage facilities, pump and lift stations of every type and size, and more than 150 miles of large and small pipelines. We also excel at facility assessments and rehabilitation design; allowing clients to extend the life of their system components and best prioritize infrastructure spending.

Collaboration
Our team works in unison with our planning, treatment, OTCR and construction management staff to deliver designs that not only meet client objectives, but also consider safety, risk, and long-term, system-wide viability. We listen and collaborate with system owners and their staff, so that our designs are informed and are readily constructible.

Value
West Yost looks at the bigger picture to provide long-lasting quality projects. Our methodology employs innovative practices, such as consequence-driven cyberinformed engineering, and constructability reviews early in the design process to deliver the highest value project for our clients.
Our Infrastructure team includes the technical design areas of pipelines, water pump stations and storage tanks, and wastewater lift stations. We are organized for management by region in the Pacific Northwest, Northern California, Southern California and have a CAD team for quick and efficient work. Our team designs infrastructure to increase safety; mitigate risk; protect public health; and create long-term, systemwide viability. We use innovative practices, including constructability reviews, and developing new technologies, and design alternatives, early in the design process, to provide the highest value projects to our clients.
Infrastructure Services

Facility Types
Experts in water and wastewater engineering infrastructure, we design facilities which ensure reliable access to clean water, manage flood control, and facilitate efficient wastewater conveyance. Our team has worked on range of facilities from Water, wastewater and Recycled Water Transmission Mains to storage tanks and flood control reservoirs.

Design Support Services
Trust our West Coast firm for expert infrastructure design support. Our skilled engineers and CAD professionals stay up to date on current procedures and materials, ensuring resilient solutions that provide long-term facilities for community drinking water and wastewater conveyance and storage needs.

Pipeline Design
Our team has worked on hundreds of miles of pipeline systems ranging from 2 to 72 inches in diameter, including gravity and pressurized systems. We have completed pipeline rehabilitation and replacement projects using bore-and-jack, pilot tube guided auger boring, horizontal directional drilling, and more.

Pump Station and Tank Design
We have vast experience in pump station and tank design, focusing on optimizing the overall system through the utilization of proven designs for efficient and reliable water management solutions. Delivering technically sound and cost-effective approaches, aimed at improving infrastructure performance and resilience.
Infrastructure Scope of Services
Water, Wastewater, and Stormwater Pipeline Assessment, Pre-Design, and Final Design • Pipeline Alignment Study
Pipeline Trenchless Rehab Design • Pipeline Trenchless Crossing Design • Septic-to-Sewer Design
Water, Wastewater, and Stormwater Pump Station Sighting Studies, Pre-Design, and Final Design
Steel and Concrete Tank Sighting Studies, Pre-Design, and Final Design • Civil Site Design • Permitting • Public Outreach
Owner’s Advisory Services/Plan Review
Infrastructure Team Spotlight

Corie Moolenkamp, PE
Infrastructure Business Sector Leader

Robert Reid, PE
Tank and Pump Station Practice Area Lead, Principal Engineer II
Project Highlights

Foothill Raw Water Pipeline
Placer County Water Agency
The Foothill Raw Water Pipeline Project pumps water from the American River to the Foothill Treatment Plant in Newcastle, CA. This project is Placer County Water Agency’s “Golden Spike,” connecting the Middle Fork American River Project to the south Placer water system. It allows PCWA to deliver water independently of PG&E’s Drum Spaulding hydroelectric project for the first time. The project serves approximately 82,000 households by moving water directly from the American River. It includes over 1.5 miles of new pipeline, elevation increase of 165 feet, two energy dissipation structures, and a hydraulic control standpipe. This completion fulfills PCWA’s vision of enhancing water resilience and reliability for Placer County residents.

Sweeney Ridge
City of San Bruno
West Yost is designing upgrades and repairs to a water tank and pipelines for the City of San Bruno, California. The steel pipeline is 70 years old and in a hard to access area with steep slopes that can exceed 30% and covered in poison oak. Fixing leaks on this pipeline has proved to be very difficult for City staff, and a major failure of this pipeline would be problematic for the City. The 70 year old steel water tank has experienced severe corrosion from proximity to the Pacific Ocean.

Riverfront Interceptor Sewer Lift Station and Forcemain Project
City of Albany
In 2019, West Yost provided predesign, design, and construction services for a new wet weather lift station and force main and for rehabilitating the Riverfront Interceptor for the City of Albany, Oregon. The Riverfront Interceptor is the primary pipeline that conveys wastewater from the City to the Water Reclamation Facility. It ranges from 30 to 54 inches, is a deep pipeline, and is very close to both the Willamette River and to an active railroad line. The forcemain and lift station are used to bypass the interceptor during peak wet weather flows. This bypass and rehabilitation resolved problems with sanitary sewer overflows into the Willamette River and was less costly than replacing the interceptor.

Driscoll Main Renewal
Alameda County Water District
Pipelines in the Alameda County Water District are nearing the end of their useful lives and need replacement. There are also portions of the conveyance system that will be upsized to better provide water service to customers and reduce transmission inefficiencies. West Yost is designing more than seven thousand feet of new water mains, which includes a crossing of Mission Creek, and will provide bid support and construction services. Construction is scheduled to begin in April 2021.
Sycamore and Agua Mansa Lift Stations
City of Rialto
West Yost is designing upgrades to increase the sewer capacity in two regions of the City of Rialto to support new development. The Sycamore Lift Station will have upgrades to increase capacity from 450 gallons per minute to 560 gallons per minute and the Agua Mansa Lift Station will increase capacity almost six-fold from 250 gpm to 1,470 gpm. The project included a condition assessment in order to determine the existing condition of the wet wells at each lift station and the condition and capacity of existing electrical equipment to support the expansions.


Highlands ARD (4/5) Sewer Relief
Sacramento Area Sewer District
West Yost is designing over 14,000 feet of force main and gravity sewers to provide relief to the existing sewer system that is currently experiencing flows above what was originally designed. West Yost is also designing a replacement lift station. West Yost has been working on this project since the project development/predesign phase and will provide bid support and construction support services.
Glenview Water Storage Tank 3
City of San Bruno
West Yost provided design and support during construction for a 2.0 MG prestressed concrete tank with a dome roof to replace a 60-year old concrete tank. The project site is located within 300 feet of the San Andreas Fault and sits between two faults just north and east of the tank. This tank is a critical component in the City’s day-to-day operation of its water supply system and provides emergency fire storage.
