Mt. Tamalpais Culvert Maintenance and Replacement Project (Lake or Streambed Alteration Agreement No. 1600-2019-0270-R3)

8 Documents in Project

Summary

SCH Number
2004082018
Lead Agency
Marin Municipal Water District
Document Title
Mt. Tamalpais Culvert Maintenance and Replacement Project (Lake or Streambed Alteration Agreement No. 1600-2019-0270-R3)
Document Type
NOD - Notice of Determination
Received
Posted
2/14/2020
Project Applicant
Marin Municipal Water District

Document Description
The California Department of Fish and Wildlife (CDFW) has executed Lake and Streambed Alteration Agreement number 1600-2019-0270-R3, pursuant to section 1602 of the Fish and Game Code to the project Applicant, Marin Municipal Water District (MMWD). The project will replace 29 metal culverts along seven road segments within intermittent and ephemeral streams on MMWD property over the course of five years. Twenty-three of the culverts will be replaced with corrugated metal and will be upsized to be able to convey the estimated 100-year flood and associated sediment loads. Six of the 29 culverts will be replaced with rock crossings, resulting in the removal of approximately 127 linear feet of culverts. Approximately 55 cubic yards of rock riprap (approximately half of which will be repurposed rock on-site) will be installed in streams at culvert outlets to provide scour protection. The project will remove three Douglas fir trees and temporarily impact 0.31 acres of riparian vegetation. The project will mitigate for these impacts by planting native riparian vegetation and trees and removing invasive plant species along streams on the property, over an area of 0.61 acres.

Contact Information
Garrett Allen
Department of Fish and Wildlife
2825 Cordelia Road, Suite 100
Fairfield, CA 94534

Phone : (707) 428-2076

Location

Counties
Marin
Other Location Info
The project is located at various unnamed streams within the Mt. Tamalpais Watershed on Marin Municipal Water District property, Marin County, State of California.

Notice of Determination

Approving Agency
Department of Fish and Wildlife
Approving Agency Role
Responsible Agency
Approved On
Final Environmental Document Available at
The final environmental impact report 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 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
No
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No

Attachments

Notice of Determination
2004082018_NOD 2019-0270   PDF 413 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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