Newsletter – August 10, 2023
The Clean Water Program is a comprehensive plan to upgrade the aging wastewater collection and treatment system with advanced infrastructure that will provide reliable services for years to come to several communities in the San Francisco Bay area, including the cities of San Mateo, Foster City, and portions of Hillsborough, Belmont, Crystal Springs County Sanitation District, and the County of San Mateo. Many of these improvements are either in design or construction and some of the construction has been completed.
The Clean Water Program is making improvements to the wastewater treatment plant, sewer pipes, pump stations, and has constructed a new underground flow equalization system facility to improve the capacity of the system. These improvements align with the City’s sustainability goals.
Phase 3 Construction at the Wastewater Treatment Plant Upgrade is Underway
Construction of the Wastewater Treatment Plant upgrades continue to make great progress. Phase 3 construction is underway, and activities include construction of the new treatment facilities, administration building, and warehouse. The framing of the exterior of the administration building is completed. Installation of interior utilities and walls is nearing completion. The Administration Building is anticipated to be completed in August 2023. The exterior framing and installation of exterior panels for the warehouse is completed and the installation of interior improvements have begun. The final major contractor concrete pour occurred on April 6, 2023, completing the installation of over 32,000 cubic yards of concrete for this project. Electrical switchgear, transformers and four generators for the new electrical building have been installed. The contractor has installed two new generators in the existing main structure as well as completed modifications to the refueling system. Miscellaneous site work, including installation of the membrane permeate pipe and secondary effluent pipe, water main and water loop for fire protection, and electrical duct bank are completed.
Ongoing construction activities include installations of piping and electrical conduits throughout the process areas. Installation of mechanical and electrical equipment, and work on various treatment structures continues in the Headworks, Primary Clarifiers, Bio-Actiflo, BNR and MBR areas. Protective coating continues to be applied in the Headworks and Chemical areas. Leak testing of the basin for the grit chambers and for the primary clarifies has started. Miscellaneous site work, including installation of the piping for the production gas and concrete site work near the entrance of the Administration Building are nearing completion.
The City is committed to minimizing the effects of construction on the neighboring community and will be using several noise reduction and control measures during this work.
You can watch the new buildings come to life via live camera feeds on our WWTP page.
UFES Project Reaches Another Important Milestone
The UFES project has made great progress this season. As of July 24, 2023, the concrete work for the main UFES structure at the San Mateo County Event Center site is complete. Mechanical, electrical, and backfill work is still in progress. Construction continues on the diversion structure on South Delaware Street near the intersection with Saratoga Drive.
The ongoing pipeline work along South Delaware Street and Saratoga Drive continues to ramp down; with minor traffic pattern changes continuing through the summer in the vicinity of the Event Center and nearby side-streets while crews complete the work. Please watch for traffic signs, which are placed in specific areas to provide direction and ensure the safety of drivers.
The City anticipates that the UFES project in its entirety, including work at the Event Center, will conclude by the end of 2023. Once the project is complete, it will be able to reduce the sanitary sewer overflows that result from excessive rainfall, which the community may have witnessed during the recent storms.
Please call the UFES hotline at 1-650-522-7250 or email us at info@CleanWaterProgramSanMateo.org for additional questions or concerns.
Want to stay informed about this project? Visit the UFES project webpage.
Stay Connected with the UFES Project
The Clean Water Program’s UFES construction is well underway and we want to keep you informed. The team established multiple information channels for residents and business owners to stay connected.
Sign up for construction alerts by texting the word UFES to 1-833-321-0231, email us at info@CleanWaterProgramSanMateo.org or call our hotline at 1-650-522-7250.
You can also visit our UFES project page to see project details and sign up for our e-newsletter. If you don’t want to opt in, but still want information, bookmark the link where we post our updates to the project website.
A Basin (North Basin) Sewer Rehabilitation Project Construction is Progressing
The purpose of the A Basin Sewer Rehabilitation Project is to repair and rehabilitate existing sanitary sewer pipelines and manholes. This project is part of the City of San Mateo’s rehabilitation of the overall wastewater collection system.
Repair work on sewer pipes and manholes began in August 2022 and is estimated to continue through November 2023.
B Basin (West Basin) Sewer Rehabilitation Project is in Design
As part of the City of San Mateo Clean Water Program, crews performed Closed-Circuit Television (CCTV) inspections for the B Basin project. Crews utilized a remote-controlled camera to help the City check the condition of pipes and obtain information that enables the City to identify problem areas in the collection system. The results of the CCTV will help the City and its engineers with the design of the project. This project is currently in the design phase and construction is anticipated to begin in early 2024.
Prior to the start of work, notifications will be sent to residents and businesses. The contractor will provide additional notices two to three days prior to work starting in specific areas of B Basin.
C Basin Sewer Video Investigations Continue
As part of the City of San Mateo Clean Water Program, crews performed Closed-Circuit Television (CCTV) inspections for the C Basin project. Crews utilized a remote-controlled camera to help the City check the condition of pipes and obtain information that enables the City to identify problem areas in the collection system.
Cleaning and CCTV inspections of approximately 40,000 linear feet of pipe in the public right-of-way, 110,000 linear feet within easements on private property, and approximately 800 manholes CCTV inspections began in November 2022 and were completed in July 2023. The design process has begun and is expected to continue into 2024.
D Basin (Central Basin) Sewer Rehabilitation
The D Basin Sewer Rehabilitation project includes cleaning and CCTV inspection of:
- Approximately 121,400 linear feet of pipe in the public right-of-way
- Approximately 84,000 linear feet in easements on private property
- Approximately 700 manholes in the public right-of-way and 300 manholes in easements on private property
CCTV work in D Basin began in Spring 2023 and is expected to be completed in December 2023. Freyer & Laureta has been hired by the City to conduct the cleaning and video inspection. Affected residents and business owners will receive advance notice about the work. Work is scheduled to occur between 8AM and 5PM, Monday through Friday. On occasion, weekend work may be required.
E Basin Sewer Rehabilitation Project Design Nearing Completion
Basin E includes the southern portion of the City, west of El Camino Real. The purpose of the E Basin Sewer Rehabilitation Project is to repair and rehabilitate existing sanitary sewer pipeline and manholes. This project is part of the City of San Mateo’s rehabilitation of the overall wastewater collection system. The design is nearing completion and the project is expected to begin construction in Fall 2023. Notifications will be sent to residents and businesses prior to the start of work, and the contractor will provide additional notices two to three days prior to work starting in your area.
This project focuses on two types of work:
- Gravity Sewer System – Spot and segment repairs
- Manholes – Repairs and replacements
During this project, our contractors will repair damaged or displaced 6-, 8-, and 10-inch-diameter sanitary sewer mains with the same size pipe at 343 locations. Work also includes rehabilitating 212 manholes with lining, repairing channels and benches, and fully removing and replacing select manholes. Common manhole rehabilitation methods include (1) replacing the frame and cover, and (2) applying cement mortar as a binding agent to the inside surfaces.