2022 Dredging

Dredge with open clamshell on the water with hills in the background

San Rafael Creek

SAN RAFAEL CREEK
OPERATIONS AND MAINTENANCE

 
 

PROJECT LOCATION AND DESCRIPTION

San Rafael Creek is located north of San Francisco Bay in Marin County. Project Operations and Maintenance (O&M) is in a shallow draft channel used mainly for light commercial and recreational activities. The O&M schedule provides for a seven-year cycle for maintenance dredging to a depth of -8 feet Mean Lower Low Water (MLLW) for the Across-the-Flats Channel in San Francisco Bay to the mouth of San Rafael Creek, and a four-year cycle for maintenance dredging to a depth of -6 feet MLLW for the Inner Canal Channel to the head of navigation at the Grand Street Bridge in the City of San Rafael. The Inner Canal and Across-the-Flats Channels were last dredged in FY 12 to a depth of -5 feet MLLW, with placement of the dredged material at the San Pablo Bay Disposal Site (SF-10), an unconfined aquatic disposal site.

TOTAL FUNDING

 

TOTAL COST

N/A

FEDERAL COST

N/A

NON-FEDERAL COST

N/A

 

 

TOTAL FEDERAL COST THROUGH FY 2022

$7,925,146

FY 2023 BUDGET

$7,175,000

COST TO COMPLETE

N/A

FY 22 accomplishments

  • Completed condition surveys of the channel; environmental sampling and testing; and preliminary engineering and design for maintenance dredging.
  • Dredged Material Management Office completed Chemistry Verification Sampling and Analysis Report review; and issued Suitability Determination. 
  • Award dredging contract to Camenzind Dutra JV, 07 July 2022

FY 23 accomplishments

  • Signed MOU with City of San Rafael to provide clean fill in Reach 4 Area 8 after Federal dredging effort completes. 
  • Environmental Work Window was extended to allow dredging until 28 February 2023.
  • Will complete O&M Maintenance Dredging of San Rafael Creek and Across-the-Flats.
  • Conduct condition surveys of San Rafael Creek and Across-the-Flats.

ISSUES AND OTHER INFORMATION

  • The City of San Rafael is the NFS.
  • The NFS must cost share for upland disposal containment of any material unsuitable for unconfined aquatic disposal. Originally the NFS provided an upland site for the Inner Canal portion of the project, but that site is no longer available.
  • The NFS is now required to cost‑share 20% of the tipping fee for upland disposal of dredged material.

CONGRESSIONAL INTEREST

  • 2nd District, Rep. Jared Huffman

POINT OF CONTACT

  • Deputy for Project Management, (415) 503-6593.

Updated on 14 February 2023

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