20070721 Ver 2_More Info Requested_20211209

Moore, Andrew W
From: Moore, Andrew W
Sent: Thursday, December 9, 2021 11:17 AM
To: Tyson Kurtz
Cc: Brown, David W SAW; Leslie, Andrea J
Subject: Request for Additional Information, North Fork Reservoir, Henderson County (DWR
Project #20070721 V2)
Tyson,
On November 15, 2021, 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 processes. The application is on -hold until all of the following information is received:
1. Please provide an agent authorization form. [15A NCAC 02H .0502(a)(11)]
2. Does the anticipated sediment excavation depth extend below 2,440' elevation? [15A NCAC 02H .0502(a)(9)]
3. The project narrative indicates up to 7,500 cubic yards of sediment are to be removed. However, Sheet 6.3
indicates 6,500 cubic yards of storage in the sediment disposal area. Why is there a discrepancy? Is there
adequate room for 7,500 cubic yards at the proposed dredge disposal area? [15A NCAC 02H .0502(a)(6) and
(a)(9)]
4. It appears from Sheet 6.1 that the Big Creek temporary diversion channel terminates into the Phase I dredging
area. It appears from Sheet 6.2 that the Fletcher Creek temporary diversion channel outlets upgradient of an
area to be dredged during Phase II. It's unclear from the plans provided how Big Creek and Fletcher Creek
streamflow will be conveyed to the area of the siphon and WTP Intake during excavation of sediment near the
dam while avoiding excavation in flowing water, particularly during Phase II where there appears to be a
significant area to be dredged downgradient of Big Creek flow, where Big Creek flow will presumably
accumulate/pond in the Phase I dredge area, and downgradient of the Fletcher Creek temporary diversion.
Please provide additional details regarding the construction sequence, diversions, and erosion control measures
that will be implemented during excavation in the area near the dam. [15A NCAC 02H .0506(b)(2)]
5. It's not clear from the Sediment Release Plan if the proposed adjustments to the gate valve during and following
precipitation events will be automated, or whether the gate valve will require manual adjustments. Please
clarify. [15A NCAC 02H .0502(a)(3)]
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 a response by January 7, 2021. 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 the
appropriate fee.
Feel free to contact me if you have any questions.
Andrew W. Moore, PG
Environmental Specialist II — Asheville Regional Office
Water Quality Regional Operations Section
NCDEQ — Division of Water Resources
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828 296 4684 office
email: [e-mail]
2090 U.S. Hwy. 70
Swannanoa, N.C. 28778
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
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