20151065 Ver 1_Scoping Comments_20130709

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Pat McCrory Thomas A. Reeder John E. Skvarla, III
Governor Acting Director Secretary
July 9, 2013
MEMORANDUM
To: Matt Matthews, DWQ, Surface Water Protection Section Chief
From: Sue Homewood, NC Division of Water Quality, Winston Salem Regional Office
Subject: Scoping comments on early coordination review for the Proposed Northwest Taxiway and Site
Development Project at Piedmont Triad International Airport in Guilford County.
These comments are in reference to a correspondence dated June 21, 2013 from URS Corp in which they
requested comments for the referenced project. Preliminary analysis of the project reveals the potential
for multiple impacts to streams and jurisdictional wetlands in the project area. The Division is aware that
a portion of this project will be constructed in conjunction with NCDOT Project I-5110. Please note that
comments made within this document are in reference to the PTIA project only. Previous comments have
been submitted to NCDOT regarding NEPA/404 Merger process for project I-5110. More specifically,
impacts to:
Stream Name
River Basin
Stream
Classification (s)
Stream Index
Number
303(d) Listing
Brush Creek
Cape Fear
WSIII;NSW
16-11-14-(1)al
Ecological/Biological
and unnamed
Integrity
tributaries
Brush Creek
Cape Fear
WSIII;NSW
16-11-14-(1)a2
Not listed
and unnamed
tributaries
Project Specific Comments:
1. Staff from the Division of Water Quality has conducted multiple meetings, site visits and other
communications regarding this project with representatives from PTIA and Baker Engineering.
2. In accordance with 15A NCAC 02H .0506(b)(4) an analysis of cumulative and secondary impacts
anticipated as a result of this project is required before a certification may be issued by the Division.
Transportation and Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] \ FAX [phone]
Internet: www.ncwateMuality.org
An Equal Opportunity \ Affirmative Action Employer
Nne
orthCarolina
Naturally

Based on the information gathered during site visits conducted by Baker Engineering, the US Army
Corps of Engineers, and staff from the Division of Water Quality, the magnitude of impacts to
wetlands and streams may require an Individual Permit (IP) application to the Corps of Engineers and
corresponding 401 Water Quality Certification. Please be advised that in accordance with 15A
NCAC 02H .0506(a) a 401 Water Quality Certification requires satisfactory protection of water
quality to ensure that water quality standards are met and no wetland or stream uses are lost. Please
be aware that any approval will be contingent on appropriate avoidance and minimization of wetland
and stream impacts to the maximum extent practical, the development of an acceptable stormwater
management plan (15A NCAC 02H .0506(b)(5)), and the inclusion of appropriate mitigation plans
where appropriate (15A NCAC 02H 0506(b)(6)).
4. This project is within the Jordan Lake River Basin. Riparian buffer impacts shall be avoided and
minimized to the greatest extent possible pursuant to 15A NCAC 213.0267. New development
activities located in the protected 50 -foot wide riparian areas within the basin shall be limited to
"uses" identified within and constructed in accordance with 15A NCAC 213.0267. Buffer mitigation
may be required for buffer impacts resulting from activities classified as "allowable with mitigation"
within the "Table of Uses" section of the Buffer Rules or require a variance under the Buffer Rules. A
buffer mitigation plan, including use of the NC Ecosystem Enhancement Program, must be provided
to NCDWQ prior to approval of the Water Quality Certification.
Brush Creek are class WSIII; NSW waters of the State. NCDWQ is very concerned with additional
water quality impacts that could result from this project. NCDWQ recommends that highly protective
sediment and erosion control BMPs be implemented to reduce the risk of nutrient runoff to Brush
Creek. NCDWQ requests that design plans provide treatment of the storm water runoff through best
management practices as detailed in the most recent version of NCDWQ's Stormwater Best
Management Practices.
6. Brush Creek (16-11-14-(1)al) are class WSIII; 303(d) waters of the State. Brush Creek is on the
303(d) list for impaired use for aquatic life due to ecological and biological integrity. NCDWQ is
very concerned with additional water quality impacts that could result from this project. NCDWQ
recommends that the most protective sediment and erosion control BMPs be implemented in
accordance with Design Standards in Sensitive Watersheds (15A NCAC 04B .0124) to reduce the risk
of further impairment to Brush Creek. NCDWQ requests that design plans provide treatment of the
storm water runoff through best management practices as detailed in the most recent version of
NCDWQ Stormwater Best Management Practices.
7. A modification to the Industrial Stormwater Permit issued to PTIA, NCS0005008 will be required in
order to address any additional industrial stormwater from the new taxiway and development site.
General Project Comments:
1. The environmental document should provide a detailed and itemized presentation of the proposed
impacts to wetlands and streams with corresponding mapping. If mitigation is necessary as required
by 15A NCAC 21-1.0506(h), it is preferable to present a conceptual (if not finalized) mitigation plan
with the environmental documentation. Appropriate mitigation plans will be required prior to
issuance of a 401 Water Quality Certification.
2. Future documentation, including the 401 Water Quality Certification Application, shall continue to
include an itemized listing of the proposed wetland and stream impacts with corresponding mapping.
3. Sediment and erosion control measures should not be placed in wetlands or streams.

4. Borrow/waste areas should avoid wetlands to the maximum extent practical. Impacts to wetlands in
borrow/waste areas will need to be presented in the 401 Water Quality Certification and could
precipitate compensatory mitigation.

vRs
June 21, 2013
Ms. Dee Freeman
Secretary
N.C. Dept. of Natural Resources
1601 Mail Service Center
Raleigh, NC 27699-1601
RE: EARLY COORDINATION REVIEW FOR ENVIRONMENTAL ASSESSMENT OF PROPOSED NORTHWEST
TAXIWAY AND SITE DEVELOPMENT PROJECT AT PIEDMONT TRIAD INTERNATIONAL AIRPORT
(GSO), GUILFORD COUNTY, NORTH CAROLINA
Dear Ms. Freeman,
The Piedmont Triad Airport Authority is proposing several airport improvement projects in conjunction with developing
approximately 750 acres of land located immediately adjacent to and northwest of the airfield at GSO.
The proposed improvements would address the need for expanded airport facilities to accommodate additional aviation -
related development at GSO. These improvements would not increase the capacity of the existing airfield at GSO. The
proposed improvements include the following actions:
• Site preparation of approximately 750 acres of land for future aviation related development, including
clearing, grading, and excavation;
• Construction of a cross -field taxiway system linking the proposed development area to the existing
airfield;
• Construction of a full-length parallel taxiway on the northwest side of Runway 5L/23R to link the
remainder of the new development area to the runway;
• Extension of utilities to the development area, including electrical, natural gas, water, sanitary sewer,
stormwater collection and treatment, communications, and other related utilities;
• Acquisition of approximately 194 acres of land;
• Relocation of GSO's existing airport surveillance radar (ASR) facility from its current location to a new
location outside the proposed aerospace development area; and
• Implementation of mitigation measures for unavoidable wetland and stream impacts
The enclosed figures show the site location (Figure 1) and the proposed airport improvements and approximate project
area limits ((Figure 2). The facility layout illustrated in Figure 2 represents the alignment for the proposed taxiways and
a conceptual plan for potential site improvements which may be modified in the future to meet specific the needs of
aviation related development.
In accordance with the National Environmental Policy Act of 9969 (NEPA) and Federal Aviation Administration (FAA)
implementing regulations, the Airport Authority is preparing an Environmental Assessment (EA) to consider and
document the potential social, economic, and environmental impacts associated with the Proposed Project. The EA will
be submitted to the FAA for acceptance and a decision to issue a Finding of No Significant Impact (FONSI) or to issue a
Notice of Intent (NOI) to prepare an Environmental Impact Statement (EIS). URS is the consultant for the EA.
During the course of the EA, investigations will be conducted to identify potential Social, Economic, and Environmental
(SEE) impacts related to the improvements being considered. As part of our early coordination efforts for the EA, and
on behalf of the Airport Authority, URS is attempting to identify key issues that will need to be addressed in the
7605 West Courtney Campbell Causeway
Suite 700
Tampa, FL 33607-1462
Tel: [phone]
Fax: [phone]
URS Corporation
www.urscorp.com

June 21, 2013
Page 2
NEPA process. To accomplish this we would like to receive your comments relative to the proposed improvements as
they relate to your specific area of expertise or regulatory jurisdiction including permitting or mitigation requirements.
In order to sufficiently address key project issues and maintain the project schedule, your written comments are
requested by July 22, 2013. Please respond to me at the address provided below and feel free to contact me if you
have any questions or concerns.
Sincerely,
URS CORPORATION
7'�Jehfreins
P
Project Manager
Enclosures (2)
Copy: Dana Perkins, FAA
J. Alex Rosser, P.E., Piedmont Triad Airport Authority
File

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