20221671 Ver 1_More Info Requested_20230327

DocuSign Envelope ID: D4A5A1 1`3-7D613-4735-8A31-301 E23F532E1
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
NORTH CAROLINA
Environmental Quality
March 27, 2023
DWR #20221671
Buncombe County
Town of Woodfin
Attn: Adrienne Isenhower
90 Elk Mountain Road
Woodfin, NC 28804
Delivered via email to: [e-mail]
Subject: REQUEST FOR ADDITIONAL INFORMATION
Woodfin Riverside Park
Dear Ms. Isenhower:
On December 1, 2022, the Division of Water Resources (Division) received your application requesting
an Individual Water Quality Certification from the Division for the subject project. On January 5, 2023,
the Division requested additional information in order to continue our review and received responses
from your consultant on March 3, 2023, and March 6, 2023. Upon review of the response the Division
has determined that your application is still incomplete and cannot be processed at this time. The
application is on -hold until all of the following information is received:
The response to request 2 in the Division's January 5, 2023 request for additional information was
not fully addressed. The updated memo provides modeled velocity cross -sections for given
discharge events across the bypass channel, however, no data were provided for the wave feature,
adjacent streambank, or the downstream reach. Please provide predicted velocities associated with
the wave feature and adjacent streambank both at the wave feature and downstream.
2. Based on the narrative description of the mud play area, it appears the feature could be relocated
away from the unnamed tributary thereby avoiding any degradation of the stream channel and
streambanks. Please revise the plans to relocate the mud play area to another area of the site or
explain why relocation is not feasible/practicable.
3. Please provide a hydraulics study/analysis that demonstrates the culverts proposed for the
temporary low-water stream crossing during Phases 3 and 4 can adequately convey flow under
which work will be conducted, which appears to be approximately 3,500 cfs per the High Water
Guidance for In -Stream Construction document. The analysis should include additional details
regarding the temporary low-water stream crossing including number and size of proposed culverts.
Please also include material sizing for the rock backfill and demonstrate any material used to backfill
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CARCLINA
919.707.9000

DocuSign Envelope ID: D4A5A1 1`3-71D613-4735-8A31-301 E23F532E1
Town of Woodfin
DWR #20221671
Request for Additional Information
Page 2 of 3
the crossing will remain immobile if the temporary crossing is inundated so as not to result in an
unauthorized impact.
4. The plans included with the initial submittal depicted construction access to the cofferdam
associated with the bypass channel from the left -descending streambank. The revised plans received
March 3 and 6, 2023, depict construction of the cofferdam associated with the bypass channel solely
from the right -descending bank via a temporary low-water stream crossing that spans
approximately two thirds the width of the French Broad River. Based on the response to the Corps'
comments, the Division understands that the Town of Woodfin has not secured an access
agreement with Norfolk Southern to access the river -left side of the project. The Division is
extremely concerned with the feasibility/constructability of the wave and bypass channel without
access to the left -descending bank of the French Broad River. A portion of the project is planned to
tie-in to the left -descending bank apparently within the Norfolk Southern easement. In addition, it
appears that erosion and sediment control measures are proposed within the easement. Please
explain how the Town of Woodfin plans to construct a portion of the bypass channel in the Norfolk
Southern easement without their authorization.
5. The Division has been unable to find any details for the downstream boat ramp in either the initial
submittal or the additional information received March 3, 2023, or March 6, 2023. Please provide
construction details for the downstream boat ramp or note the sheet on which the details were
provided in a previous submittal.
6. Please provide an estimated construction timeline for each in -river phase.
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 respond in writing within 30
calendar days of receipt of this letter by sending one (1) copy of all of the above requested information
to the 401 & Buffer Permitting Branch, 1617 Mail Service Center, Raleigh, NC 27699-1617 OR by
submitting all of the above requested information through this
link: https://edocs.deg.nc.gov/Forms/Supplemental-Information-Form (note the DWR# requested on
the link is referenced above).
If all of the requested information is not received within 30 calendar days of receipt of this letter, 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.
��� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
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DocuSign Envelope ID: D4A5A1 F3-7D6B-4735-8A31-301 E23F532E1
Town of Woodfin
DWR #20221671
Request for Additional Information
Page 3 of 3
Please contact Andrew Moore at 828-296-4684 or [e-mail] if you have any
questions or concerns.
Sincerely,
EsDocuSigned by:
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Stephanie Goss, Supervisor
401 & Buffer Permitting Branch
Electronic cc: Owen Carson, Equinox Environmental
Amanda Jones, USACE Asheville Regulatory Field Office
Andrea Leslie, NCWRC
DWR 401 & Buffer Permitting Branch file
Filename: 20221671 WoodfinRiversidePark Buncombe IP addinfo2.docx
REQ5 North Carolina Department ofEnvironmental Quality I Division ofWater Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
onparhnem of EmironmanW 9uallly