State regulators are reviewing a permit application tied to 79 acres of wetlands near Charleston International Airport, and the agency overseeing the airport says no actual project is on the table yet. The South Carolina Department of Environmental Services is weighing whether the proposed work meets water quality standards for land near International Boulevard and Michaux Parkway in North Charleston, leaving nearby residents with more questions than answers about what could eventually rise on the site.
The application seeks a Section 401 water-quality certification, according to Live 5 News, which first reported on the filing. The Charleston Aviation Authority told the station that no particular project is currently being built and described the filing as a placeholder for future development, rather than a sign that construction is imminent.
That explanation hasn't settled the nerves of people living and working near the airport. Neighbors are asking what could eventually be built on the wetlands covered by the pending application and how any future work might affect drainage in the surrounding area, per the same report.
Neighbors Press for Studies Before Any Shovel Hits Dirt
Liz Munn, co-founder of the Charleston County Tree Preservation Alliance, has been among those pushing for more transparency. She asked whether alternatives to disturbing the wetlands, and the implications for surrounding neighbors, had been studied before the permit moved forward, the station's report notes. Munn also warned that a project built on the site could end up flooding a neighborhood or other businesses nearby.
Those concerns dovetail with how South Carolina's permitting process is structured. Under the state's Section 401 framework, the Department of Environmental Services can waive, approve with conditions, or deny a water-quality certification, and denial is required if the activity would cause permanent adverse effects on existing or designated water uses, according to guidance published by the South Carolina Department of Environmental Services. Section 401 itself requires the state to certify any activity that needs a federal permit and could result in a discharge to state waters, per the department's program overview.
How the Federal and State Reviews Fit Together
Water-quality certification is only one piece of the puzzle. The department's Bureau of Coastal Management reviews state and federal permits across South Carolina's eight coastal counties for impacts to wetlands, threatened and endangered species, proximity to shellfish, and cultural and archaeological resources. For federal individual permit requests, applications must first go to the U.S. Army Corps of Engineers and be deemed complete for a Joint Public Notice before the state's coastal consistency review proceeds.
North Charleston's own environmental guidance underscores how layered this process is: any disturbance of freshwater wetlands in the city requires a permit from the Army Corps of Engineers along with certification from the state's coastal resource management office, according to the City of North Charleston.
A Familiar Flashpoint in the Charleston Area
Wetlands fights are nothing new around Charleston. In 2024, the South Carolina Supreme Court upheld a permit allowing the WestEdge Foundation to fill some wetlands in a historic Charleston neighborhood after years of litigation, Live 5 News reported at the time. Separately, the Justice Department has defended the Army Corps of Engineers' review process after the Fourth Circuit Court of Appeals affirmed a Clean Water Act permit tied to the Cainhoy Plantation development in Charleston.
The International Boulevard area itself has a permitting history of its own. A 2013 public notice from the Army Corps of Engineers' Charleston District referenced wetlands south and west of International Boulevard as part of a 468-acre property tied to a Boeing expansion, though that filing predates the current application by more than a decade and involves a different stretch of land.
For now, the scope of any future project near the airport, along with the final outcome of the pending certification request, remains undetermined. The Charleston Aviation Authority has characterized the filing as groundwork rather than a construction plan, and state regulators have not indicated when a decision on the application might be reached.
