West Yost prepared a Water Supply Master Plan using an
integrated approach for water supply planning that addresses
demand management, supply management, and infrastructure master
planning. This project involves ongoing coordination with the
City’s advisory committee to hear and comment on the plan at each
stage of development, from analysis of demands and projections
regarding future conservation to development of modeling
scenarios and recommendations.
West Yost developed The City of Redwood City’s Water Distribution
System Master Plan, including development of a new, comprehensive
distribution system hydraulic model.
The master plan elements included projecting water demands;
evaluating the distribution system’s hydraulic capacity, water
quality, emergency reliability, and seismic vulnerability;
developing a long-term pipeline replacement strategy; and
formulating an effective, prioritized CIP.
Over the past decade, West Yost has completed the water system
Hydraulic Model Update Project and numerous comprehensive water
supply planning studies for the City of Modesto,
including the South Modesto Interim Water Supply
Study, the 2005 and 2010 Urban Water Management Plans, water
system capacity studies, as well as preliminary design/design of
critical distribution system improvement projects. The primary
focus of these projects was the improved integration of existing
groundwater and new treated surface water supply systems.
West Yost has developed Water Supply and Facilities Master Plans
for eight California Water (Cal Water) Districts. These
planning efforts have included groundwater quality and basin
supply assessments, surface water supply alternatives, recycled
water supplies, and extended period simulation models.
West Yost developed a new unidirectional flushing program for the
City of Tracy to assist the City in reducing customer complaints,
improving water quality, and extending the longevity of their
water system infrastructure. The project included developing an
optimized flushing program using the City’s hydraulic model,
creating a flushing sector map and flushing loops for the
distribution system, developing field crew mapbooks, conducting
and evaluating results of a pilot test on select areas, and
developing a system-wide flushing program.
West Yost provided hydraulic modeling, analysis, and model
development of recommended backbone potable water, wastewater,
and recycled water infrastructure required to serve buildout of
the proposed Southeast Growth Area (SEGA) Project located in
Fresno, California.
Backbone infrastructure was developed for two different land use
scenarios.
For the non-potable (recycled water) system, West Yost developed
a hydraulic model and allocated non-potable water demands based
on two land use demand factors.
West Yost is preparing a Water Focus Study for the City of
Woodland which will create a “roadmap” for the City’s future
water system infrastructure, verify previous infrastructure
sizing, ensure that the City is not missing any possible
opportunities to build operational flexibility into planned
facilities, and most importantly, to seamlessly integrate a new
treated surface water supply into the City.
West Yost has assisted the City of Tracy in planning its water
system for over 20 years, including development of their original
Water Master Plan, creating and updating the City’s water system
model, and developing an integrated water supply plan. West Yost
is currently assisting the City in preparing a Citywide Water
System Master Plan which will encompass the City’s potable water
and recycled water systems.
West Yost provided the City with validation of its recycled water
system hydraulic model, which originally was developed
by City staff using H2OMAP. West Yost also provided an extended
period model that represents the current operational condition of
the recycled water system. West Yost utilized the hydraulic model
to evaluate scenarios to optimize the use of recycled water and
provided flexibility in the operation of the system for future
demands.
West Yost developed the City of Woodland’s Water Meter
Implementation Project, which included preparation of an
implementation plan and contract documents for the City’s
two-phased meter implementation.
West Yost conducted an initial hydraulic analysis of the
potential to blend the elevated uranium concentrations in one
well with water from other wells to produce an acceptable blended
uranium concentration (less than or equal to 80 percent of 30
mg/L MCL). Utilizing the City’s water system hydraulic model,
West Yost estimated the extent of possible dilution and
coordinated with City staff to develop a proposed well operation
plan and valving arrangement to force water from other wells to
the Smyrna Well vicinity.
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 worked with the Dublin San Ramon Services District
(DSRSD) in master planning both its water and recycled water
systems, and in the design of water and recycled water
facilities. This work included the completion of a comprehensive
Water Master Plan update integrating aggressive water
conservation and reclaimed water elements. Through water
conservation and the identification of reclaimed water use
opportunities, the projected future potable water demands were
significantly reduced, and therefore infrastructure sizing was
also reduced, saving money.
West Yost is preparing a Water Supply Facilities Master Plan for
Cal Water’s Visalia Service District. The project includes
creating a hydraulic model using InfoWater® software. Cal Water
has an existing geodatabase developed for the Visalia District
facilities and desires to maintain a connection between the
developed GIS and the hydraulic model.
West Yost developed a water distribution system master plan for
the City of Grants Pass, a fast-growing community in Southern
Oregon with a current population of 21,000. The Grants Pass water
distribution system consists of an 18-mgd water treatment plant,
nine booster pumping stations, and eight reservoirs, and serves
customers in seven separate pressure zones. West Yost refined and
expanded an existing hydraulic model of the water distribution
system by working closely with the City’s GIS staff and
developing routines to export the data, which were required for
the hydraulic model.
West Yost developed a dynamic hydraulic model for the City
of Corvallis’ water distribution system. The new model
incorporates GIS, geocodes customer billing data to allocate
water demand, and was calibrated using an innovative and highly
effective tracer analysis.
