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SBSA – First Step Recycled Water Project
WBA provides overall program management services for the First
Step Recycled Water Project, the first phase of the recycled water
program within the South Bayside System Authority (SBSA) service
area. The First Step Recycled Water Project delivers tertiary treated
wastewater from the SBSA wastewater treatment plant to landscape
irrigation customers in Redwood City. Currently a total of 11 landscape
irrigation sites, 9 publicly-owned and 2 privately-owned, receive
recycled water. As program manager, WBA was responsible for putting
all the pieces together to implement this project. Examples of
specific activities included identifying necessary tasks and a
developing a plan to complete them, preparing necessary regulatory
documents for approval from the Department of Health Services and
the Regional Water Quality Control Board, communicating with the
regulatory agencies, planning for and attending public meetings,
developing consultant contracts, and working with the users to
develop recycled water standards. WBA will also be the program
manager for the subsequent phases of the recycled water program
as it expands.
DSRSD – Clean Water Revival Project
WBA evaluated the feasibility and facilities needed to dispose
of up to 2.5 million gallons per day of recycled water by groundwater
injection for DSRSD. It was recognized by the District that the
groundwater basin was actively used as a potable water supply
and that advanced treatment with reverse osmosis (RO) would be
required.
To that end, the District had commissioned a study of the technology
which WBA used as the basis for the process requirement for the
project. WBA evaluated alternative locations for siting the RO
facilities, alternative injection well locations and pipe routings.
The facilities study became the technical basis for the Environmental
Impact Report.
Carmel Area Wastewater District – Pebble
Beach Irrigation Project
WBA is providing project management and advisory services to
the Carmel Area Wastewater District to implement the project
to delivery
demineralized recycled water to the Pebble Beach golf course.
The project has been initiated due to the Pebble Beach Company’s
goal to ensure that they have a reliable source of water for
golf course irrigation. Because of the sensitivity of the greens,
the
recycled water needs to be demineralized so that it contains
the ideal sodium concentration. The project is currently in
the predesign
phase, and WBA is overseeing the work of consultants to evaluate
the feasibility of using reverse osmosis and UV disinfection
treatment facilities to meet the necessary water quality parameters.
Bay Area Regional Water Recycling Program – Master Plan
The project initially known as the Central California Regional
Water Recycling Project was renamed the Bay Area Regional Water
Recycling Program (BARWRP) to emphasize the shift in focus to
the Bay Area. WBA analyzed the public policy issues related to
the
use of recycled water. Recognizing that public policy issues
could be either a stimulus or a hindrance to water reuse, the
program
identified the issues and, in cases where public policy hindered
a project, developed strategies for overcoming the issues. WBA
also subcontracted with another engineering firm to perform a
market assessment and to develop alternatives for recycled water
use.
With the mission statement of maximizing water reuse in the Bay
Area, all potential markets for recycled water were reviewed,
with no regard to political boundaries.
SKF – Recycled Water
Feasibility Study
WBA completed a study for the Selma-Kingsburg-Fowler Sanitation
District (SKF) that analyzed whether the District can feasibly
deliver recycled water in the general vicinity of its wastewater
treatment plant. The analysis determined the available recycled
water supply and estimated the recycled water demand. The estimated
recycled water demand was based on an analysis of the potential
customers and their crops. The analysis included an assessment
of the challenges to be overcome to implement a recycled water
program. These include customer perception, political acceptance,
water quality, and project cost. Finally, the study included
an assessment of the feasibility of the potential alternatives
to deliver recycled water.
City of Mountain View – Shoreline
Pump Station
The City of Mountain View retained WBA to expand and upgrade its
existing irrigation pump station located at the City's Shoreline
Park. The original pumping facilities were unable to meet current
and future irrigation demands and the filtration equipment was
obsolete and unreliable. WBA estimated the future irrigation
needs based on the City's Master Plan for the park, golf course
and the surrounding area. The recommended upgrade program included
a phased expansion of the pumping facilities and replacement
of the filtration equipment with self-cleaning strainers. Plans
and specifications were prepared for the recommended first phase
project.
The Phase 1 project added a new 200-hp vertical turbine pump with
a variable frequency drive. Two existing 100-hp were relocated
and connected to the new, larger discharge piping. Variable frequency
drives were also provided for the relocated pumps. Two self-cleaning
strainers were provided to replace the obsolete filtration equipment.
These units, sized for 3,000 gpm each, were specified to remove
solids from the irrigation water (a combination of recycled water
and city water from holding ponds located in the park) to one-forth
the smallest orifice size in the irrigation system. The existing
building was modified to house the new equipment and a new SCADA
system. The Phase 1 facilities were designed to be compatible with
future phases when the existing 100-hp pumps will be replaced with
larger 200-hp units.
The above projects are representative of our experience in this area.
If you
would like additional information on these, or other projects that
we
have completed, please contact us.
For detailed descriptions
of representative projects in our other areas of expertise,
click below on the category you are interested in:
Recycled Water:
Wastewater:
Water Supply:
Specialized Areas:
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