NCG080972_Signed Cover Letter & COC_20181214

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
Mr. Darrell Gilbert
Carolina Sunrock
200 Horizon Drive, Suite 100
Raleigh, NC 27615
Dear Mr. Gilbert:
NORTH CAROLINA
Environmental Quality
December 14, 2018
Subject: General Permit No. NCGO80000
Carolina Sunrock — Butner Maintenance Facility
COC No. NCGO80972
Granville County
In accordance with your application for a discharge permit received on August 30, 2018, we are
forwarding herewith the subject certificate of coverage (COC) to discharge under the subject state —
NPDES general permit. This permit is issued pursuant to the requirements of North Carolina General
Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the US
Environmental Protection Agency dated October 15, 2007 (or as subsequently amended).
Please be aware that the Neuse River (segment index number 27-[1 ]) is an impaired water. There is a
Total Maximum Daily Load (TMDL) for nitrogen that affects this watershed. Information about this
TMDL can be found on Division of Water Resources' website: httos://dgq.nc.gov/about/divisions/water-
resources/planning/modeling-assessment/tmdls. In Part I, Section A, the General Permit explains that for
discharges to watersheds affected by a TMDL, coverage under this permit may depend on the facility
demonstrating that discharges have no reasonable potential to violate applicable water quality standards
for specified pollutants.
Please take notice that this certificate of coverage is not transferable except upon approval of the Division
of Energy, Mineral and Land Resources. The Division of Energy, Mineral and Land Resources may
require modification or revocation and reissuance of the certificate of coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Resources, the Coastal Area Management Act, or any other federal or local
government permit that may be required.
North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
512 North Salisbury Street 11612 Mall Service Center I Raleigh, North Carolina 27699-1612
919,707.9200

Per the requirements of the Neuse Riparian Buffer Rule, all stormwater drainage to stream buffers, from
portions of this site that have been constructed after July 22, 1997, must meet diffuse flow requirements
per 15A NCAC 2B .0233. Diffuse flow requirements are described in the North Carolina Stormwater
BMP Manual, available at: http://dgg.nc.goy/about/divisions/enerev-mineral-land-resources/energy-
mineral-land-permit-guidance/stormwater-bmo-manual.
If you have any questions concerning this permit, please contact Alaina Morman at telephone number
[phone] or by email: [e-mail].
Sincerely,
for S. Danie mith Interim erector
Division of Energy, Mineral and Land Resources
cc: Raleigh Regional Office / B. Denton
Stormwater Program Files
DWR Central Files

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
GENERAL PERMIT NO. NCG080000
CERTIFICATE OF COVERAGE No. NCG080972
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Carolina Sunrock
is hereby authorized to discharge stormwater from a facility located at
Carolina Sunrock - Butner Maintenance Facility
100 Sunrock Drive
Butner
Granville County
to receiving waters designated as Neuse River (Falls Lake below normal pool elevation),
class WS-IV; NSW; CA waters in the Neuse River Basin, in accordance with the effluent
limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV
of General Permit No. NCG080000 as attached.
This certificate of coverage shall become effective December 14, 2018.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this 141h day of December 2018.
for S. Daniel Smith
Interim Director, Division of Energy, Mineral and Land Resources
By the Authority of the Environmental Management Commission