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).
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.
West Yost provided preliminary and final design of one of the
largest cured-in-place-pipe (CIPP) projects in the U.S., 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.
West Yost has assisted the City of Sausalito in the City’s timely
response to findings from an EPA Clean Water Act compliance
evaluation inspection, and the ensuing Order for Compliance
issued by the EPA. This included preparing RWQCB annual
reports, SSMP audits, system condition assessments, SRF funding
support, and development of a District-wide CIP. Subsequently, an
updated master plan was prepared, which identified over $200
million in upgrades and trunk sewer extensions into growth areas,
and West Yost has provided design services on the highest
priority projects including pipeline and pump station
rehabilitation and replacement.
West Yost has provided interim District Manager services to WBSD
for over two years. During this time, a number of critical sewer
management and regulatory compliance projects have been
completed, including: a Sewer System Management Plan(SSMP); RWQCB
annual reports; SSMP audits; system condition rating of pipes;
development of prioritized CIP; maintenance planning support and
CMMS optimization; and SRF funding support.
West Yost is providing as needed sewer planning support to Veolia
Water, the contract water, wastewater, and stormwater system
operator for the City of Richmond.
The City’s settlement agreement with a prominent environmental
group requires I&I reductions and system improvements similar
to those required by an EPA order.
West Yost’s work in support of this settlement has included; a
Sewer System Management Plan; development of prioritized CIP; SRF
funding support; maintenance planning support; hydraulic
modeling; and master planning support.
West Yost completed three separate but related projects for
Placer County (County) within the Auburn Ravine Basin, including
a Sewer System Condition Assessment, Collection System
Recommended Improvement Plan, and the Auburn Ravine Basin
Hydraulic Capacity Assessment. Timing for each project was
critical since the County Redevelopment Agency’s North Auburn
Commercial Infrastructure Development Program was providing
partial funding for these projects under a challenging timetable.
West Yost has performed ongoing sanitary sewer planning and
design services for the City of Vacaville since 1990. These
services have included preparation of a City-wide sewer master
plan and hydraulic model, a Sanitary Sewer Management Plan
(SSMP), and a comprehensive Infiltration and Inflow (I&I)
Program.
The City has embarked on a General Plan Update to establish a
vision for the City’s future through 2035 and/or 2050. West Yost
provided infrastructure planning to the General Plan team. In
this role, West Yost identified the wastewater facilities needed
to serve the anticipated growth.
West Yost completed a number of sanitary sewer replacement
and rehabilitation projects for Union Sanitary 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 CIPP),
hydraulic analysis, coordination with utilities and property
owners, final design, and services during construction.
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.
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.
West Yost assisted the City of Medford with their development of
using treated wastewater for agricultural irrigation. This effort
has been in response to increasingly stringent discharge
requirements imposed by DEQ for discharge of effluent to the
Rogue River. West Yost developed the facilities plan which
recommended that the City further evaluate reclaimed water
production to reduce the impact of pending TMDLs on the Rogue
River.
West Yost designed a major expansion to the City of Creswell’s
effluent reuse program. A three-mile-long force main was designed
to deliver water to a newly purchased 215 acre reuse site. A new
reclaimed water pump station was designed as part of the
treatment plant design. The pipeline included a crossing of Camas
Swale Creek for which an Army Corps of Engineers 404
permit and a State Lands Division permit were obtained.
West Yost performed a cursory evaluation for the potential
feasibility of developing a raw water system for the SJWD retail
service area. This analysis evaluated agricultural vs. metered
rates, including consideration for a “status quo” scenario,
agricultural reuse, and a municipal reuse system.
West Yost provided planning, design, and construction management
services for the Linne Road Reservoir and Pump Station project.
The project consists of construction of a 7.2 MG, buried,
prestressed concrete reservoir, a 21 mgd booster pump station,
and installation of approximately two miles of 24 inch
transmission main.
The facilities are located within a park site adjacent to a
baseball field.The tank is buried and covered with tennis
courts. West Yost’s services included preparation of a
feasibility report that evaluated alternative site
configurations, hydraulic modeling, design, and services during
construction.
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.
West Yost assisted the City with a design-build for a $14 million
project to extend sewer lines to an undeveloped area in northeast
Stockton. West Yost served as the City’s representative to
complete 30 percent design, right of way acquisition, design
build team procurement, and construction management
services. Construction management services included all
contract administration, full-time onsite construction
monitoring, and all closeout activities.
