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RDA Mine

RDA, LLC has requested environmental permits from the South Carolina Department of Health and Environmental Control (DHEC) to construct and operate a proposed limestone quarry off of Seaboard Road in Williamsburg County, approximately five (5) miles northwest of Andrews, SC. Below is a listing of permits that will be required for the proposed operation, and additional relevant information.


On June 21, 2017, DHEC's Bureau of Land and Waste Management (BLWM) received an application for an Individual Mine Operating Permit for the proposed RDA Mine. The public comment period for the mine application began on August 7, 2017, and will remain open until after a formal public hearing has been held. The application and additional information required by BLWM can be found on the public notice page. Questions about the mining application and permitting process may be directed to:

Air Quality

On June 27, 2017, SC DHEC's Bureau of Air Quality (BAQ) received an application for an air quality construction permit for the proposed RDA Mine. An air quality construction permit allows for the construction and start of operation of equipment. The Department has received the following application and related information:

Questions about the air quality construction application and BAQ's permitting process may be directed to:


DHEC issues National Pollutant Discharge Elimination System (NPDES) permits to minimize stormwater runoff and other water discharges that may occur during construction and operation of the facility. On August 4, 2017, DHEC Bureau of Water (BOW) received a Notice of Intent requesting coverage under the existing general NPDES permit for the proposed RDA Mine.

Questions about the NPDES permits and requested coverage may be directed to:

Local DHEC Contacts

To speak with staff in our local DHEC office, please contact Shawn Williams in DHEC's Myrtle Beach Environmental Affairs office at 843-238-4378.

Public Engagement Opportunities

DHEC is currently accepting comments on the Mine Operating Permit Application. On November 30, 2017, DHEC hosted a public informational drop-in for anyone interested in talking with DHEC staff about the proposed project and the permitting processes. Staff from DHEC's mining, air quality, and water programs were available to listen to and address questions with attendees. The following materials were provided:

Additional opportunities for public engagement and input, including a public hearing, will be held in early 2018. DHEC will provide advance notice of public engagement opportunities.

Mailing List

If you would like to be on our mailing list to receive future information from DHEC about this proposed project, please contact Ruthie Hall at or 803-898-4379.

Please visit the Industry Notebook: Quarry Operations for additional information about quarry operations and how they are regulated. For information on current or previous sites of public interest, visit DHEC's Environmental Sites of Interest webpage.