New Gallagher Well Number 2 (West Marin Service Area)
Gallagher Well No. 1 went online in 2014 shortly after the completion of an approximate 1-mile long pipeline connecting the well site to the Point Reyes Station Treatment Plant. Gallagher Well No. 2 is a new well that provides much needed additional water supply capacity to the District’s West Marin Service Area. Gallagher Well No. 2, located approximately 450 feet north of Gallagher Well No. 1, was designed as a shallow well extending approximately 60 feet below the ground surface with a design yield of 150 gallons per minute (gpm).
The initial well development is complete and the well drilling report notes that 200 gpm is possible at the second well site. The construction of the well and mound, and additional transmission main to connect to the existing line is also complete. Currently, staff is working to fulfill the California Department of Drinking Water permit requirements so that the well can be placed in service. The project is funded by a grant under the California Department of Water Resources Small Community Drought Relief Program.
Lynwood Pump Station Motor Control Center
The purpose of the project is to replace major components of the pump station that includes pumps, piping, and electrical components as well as modifications to the structure. The pump station capacity will also be analyzed given future growth projects required to meet City/County housing elements requirements; including alternative site analysis at other locations that may best meet current and future demands.
Crest Pump Station
The proposed Crest Pump Station project is intended to replace the existing School Road Pump Station and involves the construction of a new building, installation of three 20 horsepower pumps, manifolds, associated equipment, and approximately 650 feet of 12-inch diameter and 100 feet of 8-inch diameter pipeline. The new pipeline will draw from zone 1 piping in Bahia Drive and discharge into the Crest system (zone 2) at the end of Cerro Crest. North Marin Water District has acquired a small parcel of land from the City of Novato and installed the electrical service to the site. Staff is currently seeking grant funding through the FEMA Hazard Mitigation Program to fund the construction phase of the project.
This project will provide the following benefits:
- Improved resilience to seismic events
- Increased pump efficiency thereby reducing energy costs
- Improved worker safety and access
- Addition of redundant pumping capacity
- Improved fire flow for reliability
San Mateo Tank 24” Transmission Main for Fire Safety and Reliability
The project involves the installation of a 24-inch diameter main extending from the San Mateo Tank and connecting to the existing distribution system piping in San Mateo Way. When San Mateo Tank was originally constructed in the 1960’s, a temporary 12-inch main was also constructed to connect the tank to the distribution system. At that time, additional development was planned along the slopes of Mount Burdell, and the existing 24-inch main in Palmo Way was to be extended to the tank as development occurred. Subsequently in the 1970’s, the Mount Burdell Preserve was purchased by the Marin County Open Space District and no further development occurred. The existing 12-inch main connected to the tank represents a hydraulic bottleneck in the system.
All necessary permits have been obtained and staff is currently seeking grant funding through the FEMA Hazard Mitigation Program to fund the construction phase of the project.
Old Ranch Road Tank No.2
This project consists of the design and construction of a 100,000 gallon stainless steel bolted steel tank to replace the existing aging 50,000 gallon redwood tank, as well as a new access road to the tank. The new Tank No. 2 was brought on line in July 2022 and the existing tank is scheduled to be demolished in October 2022.
Leveroni Creek Embankment Repair Project
The Leveroni Creek Embankment Repair project is included in the District’s adopted FY 23-24 Capital Improvement Projects Budget. Leveroni Creek’s left bank downstream of the 8-foot diameter culvert outfall plunge pool is slowly eroding, threatening the structural integrity of the Stafford Treatment Plant and Indian Valley Golf Course access road. A similar project was completed in 2012 to protect the right bank of Leveroni Creek near the Stafford Treatment Plant’s centrifuge and reclamation basins across from the current project location. Leveroni Creek provides habitat for steelhead (a federally-listed salmonid) and other species, and the project requires permit approvals from the US Army Corps of Engineers, California Department of Fish and Wildlife, Regional Water Quality Control Board and the County of Marin. The Project design is complete and final environmental permits are mostly secured. Grant funding is being considered for construction which is scheduled for summer 2024.
Oceana Marin Treatment and Storage Pond Repair Project
The Oceana Marin Treatment and Storage Pond Repair Project proposes to mitigate the impacts of extreme weather and earthquakes on the Oceana Marin Waste Water Treatment and Storage Ponds that occurred as a result of 2016-2017 heavy rains and wind-generated waves. Emergency pond berm repairs were performed in 2018 as a temporary solution. The current project entails draining the treatment and storage ponds, clearing and grubbing the existing bank vegetation, armoring of the pond berms with stabilization fabric and rock rip rap to provide a long-term solution with a high degree of effectiveness. Project construction is scheduled to begin spring 2023 and be completed by end of summer 2023.
Lagunitas Bridge Pipeline
This project aims to address the seismic vulnerability of a key drinking water pipeline that connects water wells and a treatment plant at Point Reyes Station with the remainder of the drinking water system in rural West Marin County. This pipeline serves the communities of Olema and Inverness, which are the main towns closest to Point Reyes National Seashore. It also serves on of the Point Reyes National Seashore visitor centers, which receives hundreds of thousands of annual visitors. The pipeline is currently attached directly to the Lagunitas Creek (Green) Bridge and will be replaced in conjunction with the Caltrans bridge replacement project that is currently scheduled for January 2023 to December 2025.
Novato Boulevard Project
In conjunction with the City’s Novato Boulevard Improvement Project, North Marin Water District will be replacing existing water facilities in Novato Boulevard between Diablo Avenue and Grant Avenue. Existing water pipelines and appurtenances will remain for future reuse as a recycled water system. The project is currently scheduled to begin construction in summer 2023.