Marin Water Phase 3 of the Culvert Maintenance and Replacement Routine Maintenance and 3 Culvert Replacements Project (Lake or Streambed Alteration Agreement No
10 Documents in Project
Summary
SCH Number
2004082018
Lead Agency
Marin Municipal Water District
Document Title
Marin Water Phase 3 of the Culvert Maintenance and Replacement Routine Maintenance and 3 Culvert Replacements Project (Lake or Streambed Alteration Agreement No
Document Type
NOD - Notice of Determination
Received
Posted
9/26/2025
Document Description
The California Department of Fish and Wildlife (CDFW) has executed Lake and Streambed Alteration Agreement EPIMS Notification No. EPIMS-MAN-48729-R3, pursuant to Section 1602 of the Fish and Game Code, to Marin Water.
The project is limited to: 1) routine maintenance activities including 43 culvert replacements and 21 culvert-to-rock ford crossing replacements (Routine Maintenance Agreement activities), and 2) the replacement of 2 culverts and 1 culvert-to-rock crossing replacement that will be substantially upsized (Standard Agreement activities), as outlined below.
1. Routine maintenance activities which are defined as activities that are periodically scheduled and implemented as necessary to maintain the water transport capacity of stream channels and the structural and functional integrity of existing culverts on or affecting streams.
These activities include routine culvert replacements, which includes 40 upsized culverts and 21 upsized rock crossings, one in-kind culvert replacement, and two downsized culverts. Existing culvert diameters range between six and 24 inches. Replacement culverts diameters will range between 18 and 42 inches. Some locations may also require minor placement of rip-rap or rearranging existing rip-rap. No riparian trees will be removed as a result of these activities.
Routine maintenance activities are anticipated to result in 0.30 acres of permanent impacts and 1.09 acres and 3,094 linear feet of temporary impacts to stream habitat.
2. The replacement of 2 culverts and 1 culvert-to-rock crossing replacement that will be substantially upsized and are not considered routine maintenance are located at:
A. EG-8, Latitude 37.93431317°, Longitude -122.5736316°
B. SG-16, Latitude 37.95642427°, Longitude -122.5849802°
C. PM-05, Latitude 37.98877267°, Longitude -122.682492°
The 2 culvert replacements and 1 culvert-to-rock crossing replacement will result in430 square feet (0.01 acre) and 10 linear feet of permanent impacts and 2,268 square feet (0.05 acre) and 70 linear feet of temporary impacts to stream habitat. No riparian trees will be removed as a result of these activities.
Contact Information
Name
Eric McGuire
Agency Name
Marin Municipal Water Agency
Job Title
Lead Agency Contact
Contact Types
Lead/Public Agency
Phone
Email
Name
Nick Wagner
Agency Name
CA Dept of Fish and Wildlife
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Responsible Agency
Phone
Location
Counties
Marin
Regions
San Francisco Bay Area
Other Location Info
The project is located at several streams within the County of Marin, including Arroyo Corte Madera Del Presidio, Phoenix Creek, Bill Williams Creek, East Fork Lagunitas Creek, Old Mill Creek, East Fork Fern Creek, Cataract Creek, and Unnamed Tributaries to Soulajule Reservoir, Arroyo Sausal, Kent Lake, Bon Tempe Creek, Carey Camp Creek, San Anselmo Creek, Deer Park Creek, Phoenix Creek, Phoenix Lake, East Fork Lagunitas Creek, Bill Williams Creek, Arroyo Corte Madera Del Presidio, Galena Creek, Larkspur Creek, Old Mill Creek, Fern Creek, Laguna Creek, Rattlesnake Creek, Swede George Creek, Barths Creek, Cataract Creek, and Bolinas Lagoon.
Notice of Determination
Approving Agency
CA Department of Fish and Wildlife
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Marin
Final Environmental Document Available at
The Final EIR prepared for the project is available to the general public at the office location listed above for the Lead Agency. CDFW’s record of project approval as a Responsible Agency is available at CDFW’s regional office.
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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