HAYWARD, CA — The Metropolis of Hayward (Metropolis) is making important enhancements at its Water Air pollution Management Facility (WPCF) to serve a rising inhabitants, rehabilitate getting old infrastructure, and enhance the standard of purified water launched to the San Francisco Bay.
Often known as the “Coronary heart of the Bay,” Hayward is the sixth-largest metropolis within the Bay Space with over 163,000 residents. The WPCF, initially constructed in 1952, treats a mean of 11.3 million gallons per day (MGD) of wastewater earlier than it’s pumped to a facility operated by the East Bay Dischargers Authority the place it’s dechlorinated and discharged into the bay by way of a deep-water outfall.
Modifications are deliberate on the WPCF to fulfill anticipated nutrient discharge laws and accommodate elevated wastewater flows and hundreds as Hayward’s inhabitants is forecasted to develop by roughly 33 p.c from 2015 to 2050, in accordance with the Affiliation of Bay Space Governments. In the end, the upgrades will place the Metropolis as an early adopter of nutrient discount options that can defend important ecosystems within the bay.
Planning for the Future
The challenge is a key a part of the Metropolis’s plan to enhance its getting old infrastructure as described by Director of Public Works and Utilities Alex Ameri:
“As the middle of the dynamic Bay Space, Hayward continues to plan for the long run, working exhausting to steadiness the wants of our rising inhabitants with the preservation of open area and an aggressive financial improvement technique. This necessary challenge is vital to defending the bay whereas sustaining glorious service to our vibrant communities.”
The Metropolis has enlisted Brown and Caldwell for preliminary and remaining design companies for the enhancements. As prime guide, the agency will develop options to include organic nutrient elimination, primarily nitrogen, within the facility’s remedy course of to fulfill nutrient limits for handled effluent discharges to the bay as regulated by the San Francisco Bay Regional Water High quality Management Board. Such options will present flexibility to accommodate enlargement utilizing standard remedy strategies or course of intensification utilizing new applied sciences to keep away from constructing new remedy tanks, relying on future wants and evolving laws.
Effectivity & Resilience
With a watch on local weather change impacts, together with potential flooding and rising groundwater ensuing from sea stage rise, the upgraded services can be designed to enhance resiliency.
The sequencing of building actions to attenuate operational disruptions throughout building of the enhancements is essential to the challenge’s success. Brown and Caldwell will work carefully with WPCF employees to develop a strong building sequencing plan to attenuate disruptions to plant operations whereas on the similar time sustaining the standard of effluent discharged to the bay.
Brown and Caldwell will even put together a complete biosolids and renewable power grasp plan that considers the impression of the nutrient upgrades on the present solids dealing with capability on the plant and sustainable administration of the helpful natural materials produced within the remedy course of. The plan will embody useful resource restoration and helpful reuse suggestions in alignment with the Metropolis’s sustainability objectives. Moreover, the plan will present a framework to assist Hayward adjust to Senate Invoice 1383, which requires decreasing California’s natural waste despatched to strong waste landfills by 75 p.c by 2025 as a part of the state’s plan to scale back greenhouse fuel emissions.
“We commend the Metropolis for its ahead planning and dedication to environmental stewardship,” mentioned Brown and Caldwell Principal-in-Cost Fran Burlingham. “Our crew is honored to assist ship the plant of the long run and place Hayward for continued success.”
Last design of the enhancements is scheduled for summer season 2024 with building anticipated for completion by spring 2028.