SASM News Details

Rehabilitation Project at the Wastewater Treatment Plant to Begin – Notice of Tree Removal

March 26, 2018

The Sewerage Agency of Southern Marin is set to launch their 2-year, $20 million Waste Water Treatment Plant rehabilitation project starting next week. Improvements include infrastructure modernization, increased reliability and efficiency, electrical upgrades, and odor reduction.

Contractors have tentatively scheduled to begin Monday, April 2nd to prepare the site for construction. This includes the removal of three large trees and several small, brush-like trees at the northwest corner of the plant (the side closest to the Mt. Tamalpais United Methodist Church parking lot). In this location, plans call for a new, 8-foot perimeter wall, and behind the wall, a new odor control tower. The northwestern corner of the treatment plant will also serve as the temporary location of one of the project construction trailers. Once the construction is complete, this area will be landscaped with trees and bushes to provide screening.

Project managers will work with Mill Valley Middle School administrators to coordinate schedules and mitigate impacts where possible. Please be advised that potential impacts to the area may include limited parking, noise, and construction-related traffic.

Thank you in advance for your patience as we work to improve our facilities.

More information and project updates may be found here.

Questions and comments: Please contact Wastewater Treatment Manager Mark Grushayev at (415) 388-2402 or