20151065 Ver 1_More Info Letter_20151116

North Carolina Department of Environmental Quality
Pat McCrory Donald R. van der Vaart
Governor Secretary
November 16, 2015
DWQ # 15 -1065
Guilford County
CERTIFIED MAIL #7013 17100002 1922 2538
RETURN RECEIPT REQUESTED
Piedmont Triad Airport Authority
Attn: J. Alex Rosser, P.E.
1000A Ted Johnson Parkway
Greensboro NC 27409
Subject: REQUEST FOR ADDITIONAL INFORMATION
Cross -Field Taxiway at Piedmont Triad International Airport
Dear Mr. Rosser:
On October 13, 2015, the Division of Water Resources — Water Quality Programs (Division)
received your application dated October 2, 2015, requesting a 401 Water Quality Certification /
Individual Water Quality Certification and Jordan Lake Buffer Authorization from the Division for
your project. The Division has determined that your application is incomplete and cannot be
processed. The application is on -hold until all of the following information is received:
1. A Public Notice issued by the U.S. Army Corps of Engineers (USACE) will be necessary to
begin the proper consideration of an application (pursuant to 15A NCAC 02H .0503).
2. Please clarify whether the Division of Energy, Mineral and Land Resources will require
riprap at the outlet of the stream culvert as part of the Erosion & Sedimentation Control
Plan approval. If riprap is required, please enumerate and clearly label the temporary
and permanent impacts on the site plan and submit a channel restoration detail. Riprap
must be located below the stream bed elevation. [15A NCAC 02H .0506(f) and (g)]
3. All work must be done "in the dry ". Therefore, dewatering methods will be necessary to
temporarily dewater the stream channel during culvert installation. Please provide a
construction sequence that details the method of dewatering to be utilized at the site
and the sequence of construction events to be followed to ensure compliance with this
condition. In addition, please ensure that the location of the temporary impacts are
shown on the construction drawings and clearly indicated in application. [15A NCAC 02H
.0502(b)(3)]
Winston -Salem Regional Office
Location: 450 W. Hanes Mill Rd, Winston Salem NC 27105
Phone: 336 - 776 -98001 FAX: 336 - 776 -97971 Customer Service: 1- 877 - 623 -6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer

Piedmont Triad Airport Authority
DWQ# 15 -1065
Request for Additional Information
Page 2 of 3
4. The Jordan Lake Buffer Rules state that Temporary Sediment and Erosion Control Devices
in Zone 1 are allowable provided that "there are no practical alternatives" and that
"sediment and erosion control for upland areas is addressed to the maximum extent
practical outside the buffer ". Please provide a more detailed justification and /or analysis
regarding this impact. [15A NCAC 02B .0237(9) and 15A NCAC 02B .0237(10)]
5. The Jordan Lake Buffer Rules state that Temporary Sediment and Erosion Control Devices
in Zone 1 are allowable provided that "the disturbed area is restored to pre- construction
topographic and hydrologic conditions immediately after construction is complete and
replanted with comparable vegetation ". Please provide a buffer restoration plan for
these areas. [15A NCAC 02B .0237(9)]
6. It appears that a small wetland between ponds E -3 and E -4 has been avoided however
the nature of the impacts surrounding it may cause secondary impacts to this wetland.
Please provide further analysis and any measures that PTAA will take to ensure the
wetland continues to function properly. [15A NCAC 02H .0502(8)]
7. Please provide a conceptual stormwater management plan for the future phases of the
project that includes the following [15A NCAC 02H .0506(b)(5) and (c)(5)1:
a. A depiction of the drainage areas on the site.
b. b. An estimate of the percent imperviousness associated with each of the
drainage areas.
c. A calculation of the water quality volume associated with each drainage area.
d. A depiction of a BMPs proposed for the site. For each BMP, note the size and
type on the plan sheet.
Pursuant to Title 15A NCAC 02H .0502(e) and 15A NCAC 02B .0267, the applicant shall furnish all
of the above requested information for the proper consideration of the application. If all of the
requested information is not received in writing within 30 calendar days of receipt of this letter,
the Division will be unable to approve the application and it will be returned. The return of this
project will necessitate reapplication to the Division for approval, including a complete
application package and the appropriate fee.
Please respond in writing within 30 calendar days of receipt of this letter by sending three
copies of all of the above requested information to the Wetlands, Buffers, Stormwater —
Compliance and Permitting (Webscape) Unit, 1617 Mail Service Center, Raleigh, NC 27699 -1650.
Please be aware that you have no authorization under the Water Quality Certification Rules for
this activity and any work done within waters of the state may be a violation of North Carolina
General Statutes and Administrative Code.

Piedmont Triad Airport Authority
DWQ# 15 -1065
Request for Additional Information
Page 3 of 3
Please contact me at 336 - 776 -9693 or Sue. Homewood @ncdenr.gov if you have any questions or
concerns.
Sincerely,
Sue Homewood
Winston -Salem Regional Office
cc: Richard Darling, Michael Baker Engineering (via email)
David Bailey, USACE Raleigh Regulatory Field Office (via email)
DWR WSRO 401 files
DWR 401 & Buffer Permitting Unit