Regulatory Public Notices

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Under the Corps' Regulatory Program, a public notice is the primary method for advising all interested parties of a proposed activity for which a permit is sought. Public notices are also published to inform the public about new or proposed regulations, policies, guidance or permit procedures.

We are requesting public comments on many Public Notices (PNs) concurrently; please pay careful attention to the file number and the comments Due Date.

Email comments are preferred.  To submit comments in writing, send them to the attention of the Project Manager listed in the Public Notice title block.  All comments should reference the PN file number and be submitted by the Response Required Date on the PN.

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SPN-2021-00451 Mecham Road Mitigation Bank

Published April 27, 2022
Expiration date: 5/27/2022

PROJECT: Mecham Road Mitigation Bank

PUBLIC NOTICE DATE: April 27, 2022
PERMIT MANAGER: Jayme Ohlhaver |  TELEPHONE: 415-503-6834  |  E-MAIL:

1.         INTRODUCTION:  County of Sonoma Department of Transportation and Public Works (Sponsor) (POC:  Glenn Morelli, 2300 County Center Drive Suite B100, Santa Rosa, CA 95403, (707) 565-7947, through their agent,

WRA, Inc. (POC: Ashley Zavagno, 2169-G East Francisco Boulevard, San Rafael, CA 94901, (415) 578-3181,, has applied to the U.S. Army Corps of Engineers (Corps) and other members of the Interagency Review Team (IRT) for the establishment of the Mecham Road Mitigation Bank.  If authorized, this mitigation bank would receive money from individuals or entities (“project proponents”) receiving Corps authorization under Section 404 of the Clean Water Act of 1972, when appropriate, to provide compensatory mitigation credit as part of Section 404 permits or enforcement actions within the proposed service area.  Additionally, the proposed mitigation bank may be utilized to offset unavoidable impacts to waters of the State that are regulated by the Regional Water Quality Control Board under Section 401 of the Clean Water Act or Section 13260 of the Porter-Cologne Act; stream alteration and state-listed endangered species impacts regulated by the California Department of Fish and Wildlife under Section 1602 of the California

Fish and Game Code and California Endangered Species Act; and impacts to endangered species regulated by the U.S. Fish and Wildlife Service under the federal Endangered Species Act.

2.         PROPOSED PROJECT: To establish the Mecham Road Mitigation Bank (Bank) pursuant to the requirements of the Corps-EPA Compensatory Mitigation Rule (33 CFR 332.8(d)) (Mitigation Rule). Supporting documents are available online at the Corps’ Regulatory In-Lieu Fee and Bank Information Tracking System (RIBITS) website:,278:P278_BANK_ID:6229

Project Site Location:  The Bank is located at 403 Mecham Road, City of Petaluma, Sonoma County, California, 94952 (APN: 024-080-020). The site is located within Section 0, Township 4 North, Range 8 West, Cotati 7.5 minute USGS quadrangle, centered at approximately 38.2974° latitude and -122.7367° longitude. 

Project Site Description:  The approximately 124.65-acre bank site is located in the upper portions of the Stemple Creek subwatershed and is primarily a non-native grassland generally disturbed by routine livestock grazing since the early 1900s.  The long-term grazing use, stormwater ditches and culverts, and constructed flood control ditch have played a significant role in shaping the current conditions of the site, which include a channelized wetland meadow/swale, stock pond with damaged outfall, and incised intermittent stream along Mecham Road, and extensive invasive species presence across the site.  The project site excludes the Sonoma County Wildlife Rescue Center located on approximately 10.14 acres of the hilltop in the center or the property.  Surrounding land uses include residential development, open ranch lands and the Sonoma County Landfill.

Based on an unverified aquatic resource delineation dated October 2021, the Bank site contains 6.26 acres of potentially jurisdictional wetlands, and 1.05 acre of potentially jurisdictional other waters.

Bank Description:  As shown in the Prospectus, the Sponsor is proposing to restore historic structure and associated functions to the degraded steam/wetland ecosystem.  To accomplish this the Sponsor proposes to modify and reconfigure culverts and their outfalls to buffer peak discharge releases in the drainages on site; conduct grading to repair and reshape incised channels and reconnect portions of the floodplain; install a passive hydrologic buffering feature to moderate peak flows; remove invasive plant species and plant native hydrophytes  and riparian species; and improve grazing management to reduce ongoing soil, vegetation and hydrologic vegetation.  

Service Area: The proposed service area for Section 404 and 401 credits covers the Salmon Creek-Frontal Pacific Ocean watershed, Mark West Creek watershed, a portion of the Lower Russian River watershed within the Central California Foothills and other watersheds within the Russian River and San Pablo Bay sub-basins and within the same ecoregion as the Bank Property.  See Prospectus (linked above) for map depicting complete service area.


Mitigation Rule:  The Mitigation Rule established a process and defined requirements for the establishment and management of mitigation banks, in-lieu fee agreements and permittee-responsible mitigation (33 CFR 332).  In addition, the Mitigation Rule established a public review process and timeline for the development of mitigation banks and in-lieu fee agreements.  This mitigation bank development process will include, but is not limited to, the following: 1) public review and comment on the Prospectus, 2) IRT coordination on the Prospectus and the Bank Enabling Instrument (BEI), 3) development of a mitigation credit production approach and credit release schedule, 4) long-term site protection and management measures, and 5) financial assurances estimation approach.

Mitigation Approval and Permitting Processes:  Mitigation requirements for a particular project are negotiated between the project proponent and the Corps. The project proponent must therefore first submit a compensatory mitigation proposal to the Corps that describes the proposed use of an In-Lieu Fee (ILF) Program or Mitigation Bank.  Per the Mitigation Rule, preference is first given to use of Mitigation Banks over In-Lieu Fee Programs and Permittee-based mitigation types, as Bank credits are usually in place prior to the permitting of a proposed project.

A Mitigation Bank contains wetlands, streams and/or other aquatic resources that have been restored, established, enhanced, or preserved.  The Bank area is then utilized to compensate for future impacts to aquatic resources resulting from permitted activities.  The value of a Bank is determined by quantifying the aquatic resource functions restored, established, enhanced, and/or preserved in terms of “credits.”  If appropriate credits are available at a Mitigation Bank located within the service area, and the Corps determines that the Bank is the most appropriate approach to mitigation implementation, then the project proponent would contact the Bank sponsor to discuss mitigation options.  The Bank sponsor would review copies of all permits issued to the project proponent and then submit a proposal to the project proponent, including the estimated cost of the proposed mitigation credits.  Prior to acceptance of payment (“credit sale”), the Bank sponsor would also contact the Corps in order to verify the Corps’ compensatory mitigation requirements.

As part of the process of establishing a Bank, the IRT would determine the types and number of potential Bank credits that may be generated.  Upon meeting either administrative milestones (e.g., BEI completion, funding of long-term management endowment) or performance-based milestones (e.g., 1-year, 3-year, 5-year conditional assessments), potential credits then become released credits and are available for sale.  In addition to the final IRT approvals of the Bank Prospectus and BEI, the sponsor would also need to obtain the appropriate federal, state, and local permits required to implement the Bank restoration activities.  The Bank sponsor would submit an application for Corps permit(s) should the proposed bank mitigation activities involve a discharge of dredge or fill material within waters of the U.S. or work or structures within navigable waters of the U.S.  The Corps would complete consultation, if appropriate, under the Endangered Species Act, the National Historic Preservation Act, and other applicable laws, prior to any permit authorization.

Bank funds would be held in an account for the Bank, and all credit sales would be tracked and reported by the Bank sponsor to the IRT at a minimum on an annual basis, and also uploaded to RIBITS.

To ensure permanent protection of the Bank site, in coordination with the IRT, the Bank sponsor would secure an in-perpetuity conservation easement and/or fee title transfer.  An endowment would be provided by the Bank sponsor to a third party, non-profit, conservation entity that would fund long-term management of the Bank property.

To ensure a high level of confidence that the Bank would be successfully completed in accordance with applicable mitigation performance standards, the Bank sponsor in coordination with the IRT, would secure sufficient and appropriate financial assurances.

4.         CONSIDERATION OF COMMENTS:  The Corps is soliciting comments from the public; Federal, state, and local agencies and officials; Indian tribes; and other interested parties in order to help inform the Corps and the

IRT as to the overall merits of the proposed Bank, the scope of the proposed mitigation bank, the delineation of the service area, the ecological suitability of the individual sites to achieve wetlands restoration, and to identify project aspects that should be addressed during the development of a draft BEI.  Any comments received will be considered by the Corps to determine whether the proposal has the potential to provide mitigation opportunities for project proponents (permittees) authorized to impact waters of the U.S. under Section 404 of the Clean Water Act or as a means of resolving Section 404 enforcement actions.

5.         SUBMITTING COMMENTS:  Interested parties are hereby notified that a Prospectus has been received in order to authorize a mitigation bank for the purpose of mitigating impacts to waters of the United States authorized, or enforcement actions resolved, under section 404 of the Clean Water Act.

As stated above, additional details and project plans are provided in the Prospectus, available online through RIBITS at the following link:,278:P278_BANK_ID:6229

Additionally, these documents are also available at the Corps’ San Francisco District Office at the address below and may be reviewed by appointment.  However, due to the on-going COVID-19 public health emergency, delays in scheduling an appointment should be expected.

During the specified comment period, interested parties may submit written comments to Jayme Ohlhaver, San Francisco District, Regulatory Division, 450 Golden Gate Avenue, 4th Floor, Room 1111, San Francisco, California 94102-3404, or by email cited in the public notice letterhead; comments should cite the Bank name, applicant name, and public notice number to facilitate review by the Regulatory Permit Manager.  Additional project information or details on any subsequent project modifications of a minor nature may be obtained from the applicant and/or agent, or by contacting the Regulatory Project Manager by telephone or email.  An electronic version of this public notice may be viewed under the Public Notices tab on the USACE website:

Regulatory Links


Contact Information

Department of the Army
San Francisco District, Corps of Engineers
Regulatory Division
450 Golden Gate Ave., 4th Floor
San Francisco, California 94102-3404

Phone Number: (415) 503-6795
Fax Number: (415) 503-6693