|
Getting your Trinity Audio player ready...
|
VIDEO. From the Sewer Authority Mid-Coastside (SAM) meeting on Monday, March 11th, 2024 at 7:00pm, as a hybrid meeting.
Receive and File Report From Climate Adaptive Systems on Desktop Data Analysis of Flows and Hydraulic Performance of SAM’s Collection and Treatment Systems During Winter Storms of 2021 and 2022/23
4A. Full Staff Report
The summary and conclusions of the report are as follows:
1. Long term trends reveal a significant increase in daily sanitary flows and rainfall derived inflow and infiltration (RDII) flows, particularly from the City of Half Moon Bay over the last ten years. Recommendations include identifying and reducing inflow sources of direct or cross connections with stormwater, sealing manhole covers, reducing infiltration by lining cracked pipes or joints, and maintaining a pipeline repair and replacement schedule. Reducing RDII flows in the system will reduce overall flows to be pumped and treated at SAM Plant, and thus reducing operational costs for SAM and the three member agencies.
2. Analysis of the three storm events indicate that all pump stations operated correctly during the storm events, and the two storage facilities were well utilized to reduce peak flows from MWSD and GCSD entering the SAM Plant. Flows from City of HMB are conveyed to the SAM Plant at a much faster rate than MWSD or GCSD due to the proximity or absence of any control mechanisms to manage peak flows. Moreover, during storms with antecedent rainfall, the percentage of peak hour flows from City of HMB entering the SAM Plant increased further indicating a higher RDII response from the HMB system. Recommendations include evaluating storage solutions within the City of HMB system to manage peak flows during intense storm events.
Summary of Data-Driven System Performance
[pdf-embedder url=”https://www.coastsidebuzz.com/wp-content/uploads/2024/03/March_11_2024_Climate_Adaptive_System.pdf”]
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
(650) 726-7833 (fax)
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.
2024 SAM Directors
Author: Coastside Buzz
Me
