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VIDEO. From the Sewer Authority Mid-Coastside (SAM) regular board meeting on Monday, March 9th, 2026 at 7:00pm, as a hybrid meeting. Agenda.
SAM webpage for Design Work Underway for the SAM Force Main in Montara. “This project is focused on the Force Main segment from Vermont Ave in Moss Beach south along Highway 1 to just south of Capistrano Road.”
Public Comment from Susy Perkins
SAM General Manager, Kishen Prathivadi, and Directors Nancy Marsh and Barbara Dye (both Granada Community Services District) respond to public comment.

More on Granada Community Services District on Coastside Buzz
More on Montara Water and Sanitary District 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.
2026 SAM Directors
Kathryn Slater-Carter ~ Chair, Representing the Montara Water & Sanitary District
Nancy Marsh ~ Vice Chair, Representing the Granada Community Services District
Paul Nagengast ~ Secretary/Treasurer, Representing the City of Half Moon Bay
Deborah Ruddock ~ Director, Representing the City of Half Moon Bay
Barbara Dye ~ Director, Representing the Granada Community Services District
Scott Boyd ~ Director, Representing the Montara Water & Sanitary District


More on the San Mateo County Harbor District on Coastside Buzz
San Mateo County Harbor District Board Meetings ~ 3rd Wednesday @ 10:00am
District Office: 504 Avenue Alhambra, Ste. 200, El Granada, CA 94018 Mailing Address: PO Box 1449, El Granada, CA 94018 Phone: (650) 583-4400 Fax: (650) 583-4614
Watch remotely. Comments and questions by email.
Please note that email correspondence sent to or from members of the Harbor Commission via the District’s website are considered public records and may be subject to disclosure and additional distribution pursuant to the Public Records Act and the Brown Act.
Harbor District Agendas and Remote Meeting Links
Harbor District Pacifica Coast TV Videos
2026 Board of Harbor Commissioners
Contact Information: To email the entire Harbor Commission, click here.
George Domurat ~ District 2, Position: President, Term: 2022-2026 Email: gdomurat@smharbor.com
Virginia Chang Kiraly ~ District 5, Position: Vice Chair, Term: 2024-2028 Email: vchang-kiraly@smharbor.com
William Zemke ~ District 1, Position: Secretary. Term: 2024-2028 mail: wzemke@smharbor.com
Kathryn Slater-Carter ~ District 3, Position: Secretary, Term: 2022-2026 Email: kslater-carter@smharbor.com
Tom Mattusch ~ District 4, Position: Treasurer, Term: 2024-2028 Email: tmattusch@smharbor.com
Please note that email correspondence sent to or from Members of the Harbor Commission via the District’s website are considered public records and may be subject to disclosure and additional distribution pursuant to the Public Records Act and the Brown Act.


