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Master Plan
The Wastewater Treatment Plant Master Plan (WWTP) is a comprehensive 30-year roadmap for SASM's efforts to rehabilitate and replace existing infrastructure, plan for expected new legal requirements, protect the plant from flooding due to 100-year flood events and sea level rise, prepare for its future growth needs, incorporate sustainability initiatives and reduce the impact of the plant's odor on its neighbors.
WWTP Rehabilitation Project - Phase I
The first phase of the WWTP Master Plan implementation is expected to begin in April 2018 and conclude in 2020. The primary goal in this initial phase is to help ensure reliable treatment of wastewater, as well as compliance with regional, State, and Federal regulations. A key improvement will be numerous upgrades and rehabilitation of existing infrastructure to ensure compliance with the National Pollutant Discharge Elimination System permits, which enhances water quality. Another component to note in this phase of the contract will be the installation of two new odor control towers, located at the northwest corner of the plant. Click here to enlarge the image showing the area of WWTP rehabilitation work.
This page will serve to keep the community updated with the latest news and updates on this important project.
Master Plan - December 2014
- Table of Contents and Executive Summary (PDF)
- Master Planning Basis (PDF)
- Wastewater Treatment Plant Assessment (PDF)
- Wastewater Treatment Plant Condition Assessment (PDF)
- Regulatory Requirements (PDF)
- Treatment Alternative Analysis (PDF)
- Flood Study (PDF)
- Biogas and Biosolids Analysis and Sustainable Design Element and Strategies (PDF)
- Capital Improvement Plan (PDF)
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Mark Grushayev
Wastewater Treatment Plant Director
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Sewerage Agency of Southern Marin (SASM)
Physical Address
450 Sycamore Avenue
Mill Valley, CA 94941
Mailing Address
26 Corte Madera Avenue
Mill Valley, CA 94941
Phone: 415-388-2402Fax: 415-381-8128
Office Hours
7:30 am to 3 pm