Comprehensive Continuing Coastal Engineering Services
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Project Objective

ATM, a Geosyntec Company, is the on-call coastal engineering consultant for Holden Beach, North Carolina, and provides specialized expertise to protect and manage the shore and coastline of this small coastal-island town. ATM supports emergency storm response management, erosion control measures, mitigation projects, and beach renourishment. Geosyntec’s Scope of Services

ATM developed a long-term, comprehensive beach management strategy for the island, which includes detailed investigations and delineation of offshore, inshore, and inland sand sources; nourishment engineering and design; dune and vegetation planting improvements; and coordination with the United States Army Corps of Engineers (USACE) on federal project initiatives. This work includes 22 successfully completed beach nourishment projects, which have moved more than 3,600,000 cubic yards of sediment. In addition, ATM conducts annual monitoring, provides shoreline and volumetric analyses, and develops proactive management strategies for the Town.

In addition, ATM provided coastal engineering services for a separate beach nourishment and terminal groin project at the island’s east end. For this project, ATM worked in support of an environmental impact statement and project delivery team process. Despite successful beach management, inlet-related erosion is chronic and sometimes severe at this location. ATM conducted an extensive alternatives analysis of dredge, nourishment, and shore protection schemes. Numerical modeling of regional and nearshore hydrodynamics and coastal geomorphology was used to produce final recommendations. In 2017, ATM successfully permitted and contracted a 1.31-million-cubic-yard hopper dredge project using an offshore borrow area. Federal Emergency Management Agency (FEMA) mitigation for Hurricane Matthew was included in this project. ATM worked with federal and state agencies to expedite the permitting process for this project. Notable Accomplishments

Since 2001, ATM has provided continuous coastal engineering services, including field investigations, geotechnical sand-source identification and dredge planning, long-term management planning, annual beach monitoring, and environmental and permitting tasks. In this time, we have helped Holden Beach manage 22 beach nourishment projects, numerous emergency storm responses, and shore protection engineering.

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Project Summary

  • Location: Holden Beach, North Carolina
  • Client: Town of Holden Beach
  • Project Practice Areas: Environmental Management
  • Services Provided: Coastal and Inlet Management; Beach Renourishment; Coastal Stabilization; Design, Engineering, Permitting, and Bid Documents; Post-construction Monitoring; Environmental and Habitat Monitoring