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Bayou Chico Contaminated Sediment Remediation Project

Members of the Project Team presented at the May 10, 2023, the Bayou Chico Association meeting. The presentation was intended to provide information on the standard conceptual approach used to develop large-scale sediment remediation projects and provide insight on how this standard approach is being applied by the team to the Bayou Chico Project.

May 10, 2023 Presentation


Escambia County hosted the first public meeting for the Bayou Chico Contaminated Sediment Remediation Project at 5:30 p.m. on August 8, 2022. The meeting was held in conjunction with the regularly scheduled Marine Advisory Committee meeting at the Escambia County Central Office Complex, located at 3363 W. Park Place. The intent of the meeting was to share the results of data collected to day, outline the proposed next steps, and solicit public input on the proposed process. Written comments may be submitted via email to by close of business Friday, September 2, 2022. Responses to written comments received by the deadline will also be posted on this page.

August 8th, 2022 Meeting Video



Bayou Chico Intro Video

Bayou Chico has experienced considerable environmental degradation from 100+ years of human activity. Deposition of fine sediments during this time has resulted in a layer of "soft" organic material across much of the bottom of the bayou in a layer up to 10-feet thick. Scientific studies have documented significant levels of contamination associated with this organic layer, including metals, polycyclic aromatic hydrocarbons (PAHs), pentachlorophenal (PCP), dioxins/furans and polychlorinated biphenyls (PCBs). The distribution of these contaminates, both horizontally and vertically, is as-yet unknown. Environmental regulation and recent restoration efforts have led to improved water quality within the bayou, but pollution from early industry and other sources will remain as a lasting legacy until contamination within the sediment is adequately addressed.

Remediation of contaminated sediment from Bayou Chico will act as the foundation of future environmental restoration efforts within the bayou. Improvements to benthic habitat and increased biological diversity and productivity will eventually support the restoration of historic natural habitats such as emergent marsh and oyster reefs.

This project is a multi-year, multi-phase project. Phase I will include planning, design and permitting. Planning will include physical and chemical characterization of bayou sediments and a  feasibility study to evaluate different methods of remediation. Future phases will directly address remediation of contaminated bayou sediment through dredging and/or other available technologies.

Funding Source

  • Gulf Coast Ecosystem Restoration Council RESTORE Grant for Phase I (Planning, Design & Permitting) - $335,510
  • Oil Spill Restoration Impact Allocation (Pot III) funding through Gulf Consortium for planning, design, permitting, and implementation - $12,660,000

Sponsored Division

  • Natural Resources Management Division


Milestone Date Notes

Last Updated:


  • December 2015 - Phase I (planning, design, and permitting) for the Bayou Chico Sediment Remediation Project was included with the Initial Funded Priorities List (FPL) approved by the Gulf Coast Ecosystem Restoration Council.
  • January 2018 - Escambia County completed a study to map the distribution of unconsolidated fine-grain bayou sediments.
  • February 2018 - Escambia County Board of County Commissioners voted to approve the Florida State Expenditure Plan. The SEP included $12,660,000 in funding for design, permitting, and implementation of the Bayou Chico Contaminated Sediment Remediation Project. 
  • March 2021 - Escambia County Board of County Commissioners accepted a revised grant agreement from the Florida Department of Environmental Protection (FDEP) in the amount of $356,850 to fund a portion of Phase I.
  • June 2021 - Escambia County Board of County Commissioners accepted a subrecipient grant agreement from the Gulf Consortium in the amount of $1,083,114 to fund a portion of Phase I. This award is a portion of the total available funding identified in the Florida State Expenditure Plan.


  • August 2019 - AECOM was selected by Escambia County to develop the project design and obtain required permits.
  • July 2021 - Bathymetric survey completed.
  • August 2021 - Electrical resistivity survey completed. Survey mapped subsurface sediment types based on electrical resistivity.
  • November 2021 - Draft Site Investigation Work Plan presented to ad hoc group of local, state, and federal technical advisors. 
  • January 2022 - Site Investigation Work Plan finalized. Plan identifies initial methodology to be used to identify the horizontal and vertical extent of chemicals of concern within bayou sediments, assess surface water quality, and conduct treatability testing.  
  • March 2022 - U.S. Army Corps of Engineers Nationwide Permit received for collection of sediment surface and core samples.
  • April 2022 -  Florida Department of Environmental Protection Letter of Exemption received for collection of sediment surface and core samples.
  • May 2022 - Initial sediment surface and core samples collected. Chemical analysis for chemicals of concern performed. 
  • June 2022 - Topographic survey and photogrammetry completed for area surrounding the bayou. Survey was conducted aerial drone equipped with lidar imaging sensor.
  • August 2022 - Results from initial sediment analysis presented to ad hoc group of local, state, and federal technical advisors.  
  • August 2022 - Public meeting to present results from initial sediment analysis to interested stakeholders. Meeting was held in conjunction with the regularly scheduled Escambia County Marine Advisory Committee Meeting.

    Project Manager:
    Office Phone:
    District 2 , District 3
    CRA District:
    Barrancas , Brownsville , Warrington
    Funding Sources:
    State Grant
    Sponsoring Division:
    NESD - Water Quality


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