PRE Tank 4A Tank Replacement Project
The Paradise Ranch Estates Tank 4A Replacement project consists of the design and construction of a 125,000 gallon cast-in-place circular concrete tank to replace the existing aging 50,000 gallon redwood tank and the 25,000 gallon redwood tank destroyed in the Mt. Vision fire in 1995. The project includes additional fire flow storage to satisfy Marin County Fire protection requirements and is consistent with the Board approved 2001 West Marin Long Range Plan. Construction is slated for March – October 2020.
Lynwood Pump Station Motor Control Center
The Lynwood Pump Station is located at the intersection of South Novato Boulevard and Sunset Parkway in the center median. The electrical service and operational controls are over 40 years old and have gone through several temporary repairs over the years. To improve reliability the electrical systems and controls require replacement and relocation out of the flood prone area of the underground vault at the pump station. An above ground electrical control room has been designed to incorporate the historical design of the existing structure and incorporate modern architectural features. The project will include the construction of the new control room and landscaping of the median at the existing pump station location.
Crest Pump Station
The proposed Crest Pump Station project is intended to replace the existing School Road Pump Station, and involves 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. NMWD is working with the City of Novato to procure a small parcel for the project. Construction is projected to commence summer 2021. This project will provide the following benefits:
- Increased efficiency thereby reducing energy costs
- Improved worker safety and access
- Addition of redundant pumping capacity
- Improved fire flow reliability
San Mateo Tank Inlet/Outlet Pipeline
The inlet/outlet project involves installation of a 24-inch diameter main extending from the San Mateo Tank and connecting to 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.
Old Ranch Road Tank No.2
The FY20 and FY21 Capital Improvement Project budgets for Novato include design and construction of the Old Ranch Road Tank No. 2 project. This project consists of the design and construction of a 100,000 gallon welded steel tank to replace the existing aging 50,000 gallon redwood tank, as well as a new access road to the tank. Additional land required for the new tank, water main and access road is being obtained via grant deed and easements from property owners adjacent to the District’s existing tank site. The existing tank will be decommissioned once the new tank has been placed into service. The project includes additional fire flow storage to satisfy Novato Fire protection goals and is consistent with the Board approved 2018 Novato Water Master Plan.
Leveroni Creek Embankment Repair Project
The Leveroni Creek Embankment Repair project is included in the District’s adopted FY 19-20 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. Project construction is scheduled for Summer 2021.
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 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 for May – November 2021.
INITIAL PUBLIC NOTICE
OCEANA MARIN TREATMENT AND STORAGE PONDS REPAIR PROJECT
MARIN COUNTY, CALIFORNIA
The U.S. Department of Homeland Security’s Federal Emergency Management Agency (FEMA) intends to provide federal financial assistance under the Hazard Mitigation Grant Program (HMGP) to the North Marin Water District (NMWD) to retrofit and stabilize the Oceana Marin treatment and storage pond berms and influent force main supports to mitigate erosion or collapse during a storm, flood, or seismic event. The treatment and storage ponds are located within a 4-acre fenced enclosure at the top of a hill in Dillon Beach in Marin County, California.
The project includes draining the treatment and storage ponds, clearing and grubbing the existing bank vegetation, regrading and preparing soils, re-grading the berms, placing stabilizing geotextile fabric over the top 10 feet of the berms, and placing riprap over the fabric on the upper 10 feet of the berms. Pursuant to Executive Order 11990 (Wetlands Management) and FEMA’s implementing regulations at Title 44 of the Code of Federal Regulations Part 9, FEMA hereby provides interested parties with a notice of its intent to carry out an action affecting a wetland.
The U.S. Fish and Wildlife Service National Wetlands Inventory Wetlands Mapper identifies a 1.07-acre freshwater emergent wetland adjacent to the northern edge of the Oceana Marin treatment ponds that is within the project work area The treatment and storage ponds within the project area are excluded from the definition of Waters of the U.S. in accordance with 40 CFR § 230.3 (s)(7).
Interested persons may submit comments or obtain additional information about FEMA’s proposed action by writing the FEMA Region IX Environmental Officer at FEMA, 1111 Broadway, Suite 1200, Oakland, California 94607 or firstname.lastname@example.org, or calling (510) 627-7027. All requests should be received no later than 15 days after posting of this notice.
Posted July 26, 2021 thru August 11, 2021