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PRESS RELEASE. From the Sewer Authority Mid-Coastside on July 8th, 2025. SAM webpage for Design Work Underway: SAM Force Main in Montara.
SAM Force Main Project will be taking place in the Moss Beach / North end of El Granada area Field Investigation and Design Work Underway.
Protecting public health and the environment is core to Sewer Authority Mid-Coastside’s (SAM) mission. SAM’s core facilities – the Intertie Pipeline System (IPS) and the SAM Wastewater Treatment Plant in Half Moon Bay – treat all sewage from homes and businesses from Montara to Half Moon Bay. SAM’s facilities work 24/7 to ensure human waste from toilets, as well as wastewater from sinks, showers and any business processes do not reach our coastline or ocean without appropriate treatment.
Investment in the SAM Force Main in Montara
As part of critical investment in our wastewater system, SAM is working to upgrade portions of the SAM Intertie Pipeline System (IPS) which collects and transports sewage from Montara, Granada and north Half Moon Bay to the treatment plant. The IPS – including almost 2 miles (13,395 feet) of original ductile iron pipeline as part of SAM’s Force Main in Montara* – has been in continuous service for more than 40 years and has approached the end of its useful life.
In recent years, including January 2023, there have been a series of failures along the SAM Force Main in Montara. Failures have resulted in interrupted service and sanitary sewer overflows – where untreated wastewater has been released into the environment.
*Installed in 1979, some sections of the Force Main have already been replaced in 2017 and 2023.
Phase 1: Field Work / Design / Environmental Review (January-December 2025)
Field Investigation and Design Work Starting: Starting in January 2025, McGuire and Hester and MNS Engineers (MH/MNS) – a progressive design-build team – began Phase 1 work to develop a preferred force main design. Design-build teams work collaboratively with the owner/operator to efficiently and cost-effectively design and construct complex projects.
Work throughout 2025 will include field investigations, design, environmental review and permitting.
In late July 2025, geotechnical boring investigation will be conducted along the pipeline alignment. This field work is expected to take 5-6 days and will involve a mobile boring drill, along with a small field team.
Traffic control will be in place for work conducted near roads or Highway 1. This work will occur between the hours of 9am-3pm. Read More online at https://samcleanswater.org/upcoming-projects/ Questions? Please email: FMMontaraProject@samcleanswater.org
More on the SAM Force Main in Montara on Coastside Buzz
Sewer Authority Mid-Coastside (SAM) Meetings ~ 2nd & 4th Mondays @ 7:00pm
SAM Agendas and Zoom Links
Subscribe to Agendas. Watch remotely. Comments and questions by email.
SAM Meeting Videos via Pacific Coast TV
Where Does Your Poop Go ~ Virtual Video Tour!
Interactive “Story Map” Tour
Contact Us
Our regular office hours are 7:00 a.m. through 4:00 p.m., Monday through Friday, excluding holidays. The Authority can be reached 24-hours a day at: (650) 726-0124.
Our Address is:
Sewer Authority Mid-Coastside
1000 Cabrillo Hwy N.
Half Moon Bay, CA 94019
SAM Board from left. Paul Nagengast (HMB), Nancy Marsh (GCSD), Scott Boyd (MWSD), Debbie Ruddock (HMB), Barbara Dye (GCSD), Kathryn Slater-Carter (MWSD).
The Sewer Authority Mid-Coastside (SAM) provides wastewater treatment services and contract collection maintenance services for a population of approximately 24,000 in the following areas:
- City of Half Moon Bay
- El Granada
- Miramar
- Montara
- Moss Beach
- Princeton by the Sea
SAM Directors
SAM is a joint powers authority (JPA) created by its three member agencies: City of Half Moon Bay (City), Granada Community Services District (GCSD), and the Montara Water and Sanitary District (MWSD).
The JPA is a separate, independent, public agency created by the member agencies to perform functions and share powers common to the member agencies. Those powers are outlined in a joint exercise of powers agreement (Agreement). The Agreement creating SAM can be found on the Documents page.
Each Agreement identifies how the independent agency will be governed. In the case of SAM, each member agency appoints two members from its governing board to represent it on the SAM Board of Directors, for a total of six directors.
The Agreement also establishes the weight of each director’s vote. The vote by each representatives from the City is given the weight of two votes. The vote by each representative from GCSD and MWSD is given the weight of one vote. The total number of possible votes is eight. A quorum is a minimum of five votes and resolutions require at least six votes to pass.
2025 SAM Directors
Deborah Ruddock ~ Chair, Representing the City of Half Moon Bay
Kathryn Slater-Carter ~ Vice Chair, Representing the Montara Water & Sanitary District
Nancy Marsh ~ Secretary/Treasurer, Representing the Granada Community Services District
Barbara Dye ~ Director, Representing the Granada Community Services District
Paul Nagengast ~ Director, Representing the City of Half Moon Bay
Scott Boyd ~ Director, Representing the Montara Water & Sanitary District
Author: mdrag
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