20240181 Ver 1_More Info Requested_20240220

Moore, Andrew W
From: Moore, Andrew W
Sent: Tuesday, February 20, 2024 2:32 PM
To: Emily Tarsa
Cc: Anderson, Mitchell L CIV USARMY CESAW (USA); Leslie, Andrea J
Subject: Request for Additional Information, Alderfer NOV, Buncombe County (DWR Project #
20240181)
Emily,
On January 26, 2024, 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 all of the following information is received:
It's not clear from the construction sequence whether stream flow will be allowed to flow over and/or through
the disturbed area associated with the dam removal. In particular, step 4 references breaching the entire length
of the dam followed by step 5, which involves the installation of a temporary diversion pipe. It's not clear
whether flow will be allowed to flow over the breach, or whether the breach invert elevation will be above the
pond elevation and the siphon remain operable while the diversion pipe is installed. Please confirm no stream
flow will be allowed flow over any disturbed area during the entire dam removal. [15A NCAC 02H .0506]
CONSTRUCTTQN SEQUENCE
1_ Dewater pond over dam via siphons aa&oc pumps to lowest
possible lenei; discharge to cement spilhvav south of culvert
under dam.
I install silt fencing per approved FCP (per Edscl Frigiaeering).
3_ As water level drops, slowly lower dam elevation to pond grade
and place mvfill behind Sal fence to fill in easum edge o£pond.
4 When the t%Wer level in the pond has reached its lowest potrtt,
breach entire length of dam and place fill behind the siltfence_
Allow scoter to flow into the old stream channel and grade the left
stream bank at a 3:1 slope. Revegetate bank according to 0.
5. Construct 6" pipe to temporarth divert stream during restoration
of the original stream channel beneath the eaithen dam
6. Remove fill from old stream channel under dam and grade stream
banks at 3-1 slope according to the typical detaik Stream width
should match widths of undisturbed sections irnrnediately
upstream and doAvsueam of the project area_ If the ele%ution
change is greater than 2"A in this stream section, ne recommend
lying an engineer during this phase of construction.
7_ Seed, mulch, and place coin mazting over completed banks
immediately folknving appropriate grade. Add 100 live stakes
along the stream bank according to typical detail.
8. Remove 6" diversion pipe and smooth pond bed to desired grades
bevond the limits of stream restoration work-
9- Seed and mulch in pond bed.
Pursuant to Title 15A NCAC 02H .0502(e), the applicant shall furnish all of the above requested information for the
proper consideration of the application. Please provide your response by March 22, 2024. If all of the requested
information is not received, the Division will be unable to approve the application and it will be denied as incomplete.
The denial of this project will necessitate reapplication to the Division for approval, including a complete application
package and appropriate fee.
Feel free to contact me if you have any questions.

Andrew W. Moore, P.G.
Regional Supervisor, Division of Water Resources
North Carolina Department of Environmental Quality
Office: [phone]
[e-mail]
NORTH CAROLINA D7Q
Department of Environmental Quality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.