20140832 Ver 2_Additional Information Received_20170110

Moore, Andrew W
From: Chris Engle <[e-mail]>
Sent: Tuesday, January 10, 2017 4:15 PM
To: Moore, Andrew W
Cc: [e-mail]; Leslie, Andrea J; Grant Ginn
Subject: RE: Request for Additional Information, Cartoogechaye Creek (Tinsley) Stream
Restoration, Macon County (DWR Project #20140832 V2)
Mr. Moore,
Please see the following responses to your request for additional information.
1) The baseflow discharge of Cartoogechaye Creek will likely exceed that which is practical for the contractor to
pump around. To reduce the downstream impact of sedimentation due to construction, the contractor will
install a temporary barrier to isolate the work area from the current. An axial pump will route sediment -laden
water from the work area to be discharged through a silt bag. The resulting flow gradient toward the work area
will minimize the amount of sediment allowed to leave the site. A pump -around operation will be utilized to
reduce sedimentation during construction of Tinsley Branch.
2) Since submitting the permit drawings, it has been determined that the impact on Tinsley Branch will be shorter
than the length reported in the PCN. Restoration efforts on Tinsley Branch will be limited to the downstream
portion, and will not extend all the way to the existing CMP outlet. No construction -related disturbance will
occur at the CMP outlet.
Don't hesitate to contact me if you have any questions or require any additional information. Thank you.
Thanks,
Chris Engle
From: Moore, Andrew W [mailto:[e-mail]]
Sent: Tuesday, January 10, 2017 3:47 PM
To: [e-mail]
Cc: '[e-mail]'; Leslie, Andrea J
Subject: Request for Additional Information, Cartoogechaye Creek (Tinsley) Stream Restoration, Macon County (DWR
Project #20140832 V2)
Mr. Engle,
On December 28, 2016, the Division of Water Resources (Division) received your application dated December 20, 2016,
requesting a 401 Water Quality Certification from the Division for the subject project. The Division has determined that
your application is incomplete and cannot be processed. The application is on hold until all of the following items are
addressed:

Condition 9 of Water Quality Certification 3885, which corresponds to Army Corp of Engineers Nationwide
Permit 27, requires that "All work in or adjacent to stream waters shall be conducted so that the flowing stream
does not come in contact with the disturbed area.... Exceptions to this condition require application submittal to
and written approval by the Division." Note 6 under "Channel Construction Notes" on the Typical Sections sheet
submitted with the PCN indicates that pump around shall be used "when practical". Please provide additional
detail regarding how you plan to comply with Condition 9 of WQC 3885.[15A NCAC 02H .0507 (c)]
2. The plans depict riprap outlet protection below a culvert on Tinsley Branch. Are there any practical alternatives
to the proposed fill associated with the rirap outlet protection that will minimize impacts to surface waters and
that will still allow you to achieve your project goals? If not, please provide a construction detail of the proposed
riprap outlet protection. [15A NCAC 02H .0506 (b)(1), (b)(2), (f), and (g)]
Feel free to contact me if you have any questions.
Andrew W. Moore, P.G.
Environmental Specialist — Asheville Regional Office
Water Quality Regional Operations Section
NCDEQ — Division of Water Resources
828 296 4684 office
email: [e-mail]
2090 U.S. Hwy. 70
Swannanoa, N.C. 28778
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