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 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 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 is assisting the City of St. Helena in the development
of the best compliance solution for several outstanding
regulatory issues associated with their 0.5 mgd Wastewater
Treatment Facility (WWTF), including an evaluation of the City’s
water reuse options.
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.
