20200613 Ver 1_More Info Requested_20200713

Strickland, Bev
From: Yankura, Kaylie
Sent: Monday, July 13, 2020 5:39 PM
To: David Odom
Cc: Brown, David W CIV USARMY CESAW (USA)
Subject: Request for Additional Information; Thermal Belt Outreach Ministry DWR# 20200613
Mr. Odom,
On May 6, 2020, the Division of Water Resources (Division) received your application 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 the following items are addressed:
1. Please describe current conditions on site, including stream width, and provide a detailed engineering plan, profile
view, and cross-section of all proposed culverts. These drawings must include details regarding stream alignment
in relation to pipe alignment, pipe slope, pipe burial, and dissipater pad. [15A NCAC 02H .0502(b)] Provide
justification for the proposed culvert dimensions based on reference reach information. [15A NCAC 02H .0506
(b)]
2. Please provide cross section details showing the provisions for aquatic life passage. [15A NCAC 02H .0506(b)(2)]
3. Per Condition #11 of GC4139, please provide details on how you are going to maintain the physical integrity of
the stream above and below the culvert. [15A NCAC 02H .0506(b)(2)]
a. If multiple pipes or barrels are required, they shall be designed to mimic natural stream cross section as
closely as possible including pipes or barrels at flood plain elevation and/or sills where
appropriate. Widening the stream channel should be avoided. Stream channel widening at the inlet or
outlet end of structures typically decreases water velocity causing sediment deposition that requires
increased maintenance and disrupts aquatic life passage. A construction sequence and detail should be
provided to ensure the contractor is clear on construction of these benches.
4. Please indicate if the proposed culvert headwalls and concrete piers have been included within the permanent
impacts included within the PCN. [15A NCAC 02H .0502(b)]
Pursuant to Title 15A NCAC 02H .0502(c), 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, the Division will be unable to approve
the application and it will be returned.
Please contact me if you have any questions. You may provide your response via email or mail to the address below.
Thank you,
Kaylie Yankura
Environmental Specialist — Asheville Regional Office
Water Quality Regional Operations Section
NCDEQ — Division of Water Resources
2090 U.S. Hwy. 70
Swannanoa, N.C. 28711
828 296 4685 office
828 231 9634 mobile
kaylie.yankura©ncdenr.gov
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