1. COSA Committee Meeting
23 June 2017
Sediment Evolution Following Beach Fill Construction:
A Literature Review and Technical Workshop
Doug Piatkowski
Marine Biologist
Office of Environmental Programs
Division of Environmental Assessment /

2. Hypothesis
How does the addition of new sediment and altered shore-face geometry affect natural sediment dynamics and dispersal processes relative to adjacent habitat?
Source: CBI, Dare County, NC (June 2017)
Source: CBI, Dare County, NC (June 2017)

3. Sediment Evolution Following Beach Fill Construction: A Literature Review and Technical Workshop
BOEM Information Need: A collaborative and comprehensive strategy to better understand the dynamics of Outer Continental Shelf (OCS) sediment placed on beaches.
Inform future decisions
Non-competitive negotiated agreements
Endangered Species Act Section 7 consultations
Essential Fish Habitat consultations (i.e. ETOF)
Acute / chronic effects relative to natural conditions
Stewardship Responsibility
Optimize use of OCS resources
140 MCY - Long term fate
Regional Sediment Management (RSM)
Project sustainability and geomorphic function
Date Information is Required:
ASAP
Source: CBI, Dare County, NC (June 2017)
Source: David P. Robinson and NMFS

4. Background Source: Willson et al. 2017; Biggs and Edwards 2017 ETOF
Willson, K. G. Thomson, T. Roberts Briggs, N. Elko, and J. Miller. ASBPA White Pater: Beach nourishment profile Equilibration: What to expect after sand is placed on a beach. ASBPA Science and Technology Committee. Shore & Beach. Vol. 85, No. 2. Spring Biggs, B. and L. Edwards. Regulation and Evaluation of Hardbottom Monitoring. Florida Shore and Beach Preservation Association, National Conference on Beach Preservation Technology. February 8-10,

5. Background Relationship with Previous Work/Efforts:
Borrow area optimization [NT-15-03]
Review of Biological and Biophysical Impacts from Dredging and Handling of Offshore Sand [NT-12-06]
Relationship with Concurrent/Future Efforts:
National Sand Inventory
Environmental compliance
Sediment Sorting [NT-15-05]
Economic and geomorphic comparison of OCS [GM ]
Source: USACE 2016
USACE. Dade County Beach Erosion Control and Hurricane Protection Project, Miami-Dade County, FL. Identification of Alternative Sand Sources for the Remaining Period of Federal Participation. Environmental Assessment. Appendix E, Identification of Benthic Resources in the Nearshore Zone Sunny Isles Beach, Miami-Dade County, Fl.

6. Study Objectives Develop a concept plan for how to:
Study nearshore sediment transport rates, processes, and inferred transport pathways
Monitor movement of sediment size fractions relative to physical conditions
Collect empirical data for model calibration and/or validation
Improve predictions on sediment budgets
Identify sources and sinks as well as the magnitude
Rates and processes of overall sediment dynamics
Leverage multi-agency funds (i.e., National Oceanographic Partnership Program [NOPP], Gulf of Mexico Alliance, etc.)

7. Methods Literature Review Technical Workshop BOEM documents
External publications
Monitoring reports
Technical Workshop
Identify key stakeholders and technical experts
Identify/leverage existing data
Model review and data needs
Develop a concept plan

8. Relationship to Strategic Science Questions
Cumulative Effects
Habitat or Landscape Alteration
Existing or Emerging Technology
Source: CBI, Dare County, NC (June 2017)

9. Summary
Understanding sediment transport pathways is a complex question
Multiple stakeholder interests
Potential impact to adjacent resources
Robust field initiatives and a collaborative and comprehensive strategy are needed
Need to leverage existing data and multi-agency funding