NCC223428_ESC Approval Submitted_20221004

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Governorft
ELIZABETH S. BISER
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Secretary
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BRIAN WRENN
Director
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September 22, 2022
LETTER OF APPROVAL WITH MODIFICATIONS
Davidson County Airport Authority
Attention: Mr. Rick Phillips
P.O. Box 1067
Lexington, NC 27292
RE: Project Name: DAVIDSON COUNTY AIRPORT AUTHORITY -SKY AVIATION HANGAR SITE
Project ID: DAVID-2023-009
Acres Approved: 5.69
County: Davidson
City: Lexington
Address: Aviation Way
River Basin: Yadkin Pee -Dee
Stream Classification: Swearing Creek — Class C
Submitted By: Davis -Martin -Powell Engineers & Surveyors — Mr. Ben Palmer, PE
Date Received by LQS: August 30, 2022
Plan Type: Hangar Addition
Dear Mr. Phillips:
This office has reviewed the subject erosion and sedimentation control plan. We find the plan to be
acceptable with modifications and hereby issue this letter of Approval with Modifications. The
modifications required for approval are listed on the attached page. This plan approval shall expire three
(3) years following the date of approval, if no land -disturbing activity has been undertaken, as is
required by Title 15A NCAC 4B .0129.
As of April 1, 2019, all new construction activities are required to complete and submit an electronic
Notice of Intent (eNOI) form requesting a Certificate of Coverage (COC) under the NCG010000
Construction General Permit. After the form is reviewed and found to be complete, you will receive a
link with payment instructions for the $100 annual permit fee. After the fee is processed, you will
receive the COC via email. As the Financially Responsible Party shown on the FRO form submitted for
this project, you MUST obtain the COC prior to commencement of any land disturbing
activity. The eNOI form may be accessed at deq.nc.gov/NCG01. Please direct questions about
the eNO1 form to the Stormwater Program staff in the Raleigh central office. If the owner/operator of
this project changes in the future, the new responsible party must obtain a new COC.
North Carolina Department of Environmental Qaality I Division of Energy, Mineral and Land Resources
Winston-Salem Regional Office 1 450 Hanes Mill Road, Suite 300 1 Winston-Salem, North Carolina 27105
336-776-9800
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Letter of Approval with Modifications
Davidson County Airport Authority
September 22, 2022
Page 2 of 3
Title 15A NCAC 413 .011 S(a) and the NCGO 1 permit require that the following documentation be kept
on file at the job site:
1. The approved E&SC plan as well as any approved deviation.
2. The NCGOI permit and the COC, once it is received.
3. Records of inspections made during the previous 12 months.
Also, this letter gives the notice required by G.S. 113A-61.1(a) of our right of periodic inspection to
insure compliance with the approved plan.
North Carolina's Sedimentation Pollution Control Act is performance -oriented, requiring protection of
existing natural resources and adjoining properties. If, following the commencement of this project, it is
determined that the erosion and sedimentation control plan is inadequate to meet the requirements of the
Sedimentation Pollution Control Act of 1973 (North Carolina General Statute I I3A-51 through 66), this
office may require revisions to the plan and implementation of the revisions to ensure compliance with
the Act.
Acceptance and approval of this plan is conditioned upon your compliance with Federal and State water
quality laws, regulations, and rules. In addition, local city or county ordinances or rules may also apply
to this land -disturbing activity. This approval does not supersede any other permit or approval.
Please note that this approval is based in part on the accuracy of the information provided in the
Financial Responsibility Form, which you provided. You are requested to file an amended form if there
is any change in the information included on the form. In addition, it would be helpful if you notify this
office of the proposed starting date for this project.
Your cooperation is appreciated.
Sincerely,
Fred Walker, PE
Engineer III
Land Quality Section
Enclosures: Certificate of Approval
Modifications Required for Approval
ec: Mr. Ben Palmer, PE ([e-mail])

Letter of Approval with Modifications
Davidson County Airport Authority
September 22, 2022
Page 3 of 3
MODIFICATIONS REQUIRED FOR APPROVAL
Project Name: DAVIDSON COUNTY AIRPORT AUTHORITY -SKY AVIATION HANGAR SITE
Project ID: DAVID-2023-009
County: Davidson
Modifications pursuant to applicable North Carolina General Statutes and/or Regulations;
1. Include all E&SC measures and land disturbing activities within the Limits of Disturbance
(LOD). An outlet protection pad is located outside of the LOD. [G.S. 113A-57.(4)]
2. Provide stabilized inlets into the sediment basin for each inlet. Stone pad should extend into
basin floor. [G.S. 113A-57.(3)]
3. Geotechnical engineer stamp or sign off for wall design over 4 ft., check with county building
permitting to verify any county requirements. [G.S. 113A-57.(4)]
4. If discharging onto slope 5% or greater increase stone apron length and width and potentially stone
size to account for discharge onto grade (Tables 8.06 a&b assume discharges onto flat ground per
drawing detail). [15A NCAC 04B .0108]
5. Revise the construction sequence to include the following language: no major grading activities or
basin construction are to take place during wet weather or periods of predicted wet weather i.e.
Hurricanes; notify NCDEQ LQS inspector when project is ready for a close out inspection; file for
NPDES NCGO10000 e-Notice of Termination when final close out inspection report is received
from NCDEQ LQS; install inlet protection by the end of the workday for all constructed SW inlets;
sediment basin and trap embankments shall be provided with adequate groundcover immediately
upon construction; after the drainage areas to the basins and traps have been permanently stabilized,
dewater the basins. Fill the basins using stockpiled soil and bring to finish grade in compacted lifts.
Smooth the basin sites to blend with the surrounding area, ensuring the basin sites will not pond
water, and immediately permanently stabilize; dewatering operations must be discharged into
adequate stilling basin or comparable measure to prevent the discharge of sediment; site must be
"storm ready" before any extended breaks in construction activities including weekends. [15A
NCAC 04B .0106(a)(2)]
6. Hatch all areas on the plan required to meet 7-day stabilization requirement in NPDES NCGO10000.
[NPDES NCGO10000]
7. Remove S. lespedeza from seeding lists. [G.S. I I3A-57.(3)]
8. Any off -site borrow and waste required for this project must come from a site with an
approved erosion control plan, a site regulated under the Mining Act of 1971, or a landfill
regulated by the Division of Solid Waste Management. Trash/debris from demolition
activities or generated by any activities on site must be disposed of at a facility regulated by
the Division of Solid Waste Management or per Division of Solid Waste Management or
Division of Water Resources rules and regulations. [15A NCAC 4B .0110]
Ref: G.S. 113A-54.1 through G.S. 113A-57
Sections 15A NCAC 04A.0101 through 15A NCAC 04E.0504
General Permit NCG 010000 NPDES for Construction Activities

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