20200498 Ver 1_More Info Received_20200511

Strickland, Bev
From:
Dodd, Brady N -FS <[e-mail]>
Sent:
Monday, May 11, 2020 2:09 PM
To:
Yankura, Kaylie
Cc:
Brown, David W CIV USARMY CESAW (US)
Subject:
[External] RE: Request for Additional Information - Davidson River Stream
Enhancement DWR #20200498
Attachments:
TEMPORARY STREAM ACCESS DETAIL.pdf
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[e-mail]
Hi Kaylie, per your request I have the following to offer. Please let me know if more information is needed.
Thank you,
Brady
1. Per Condition 11. 9 of GC 4134, all work must be done in the dry. Please provide additional details regarding how
stream flowwill be diverted during proposed construction and enhancement activities. [15A NCAC 02H .0506(b)(3)
and (c)(3)]
Response: Due to the large volume of flow in the Davidson River at this location in the watershed, working in the
dry will not be feasible. Work is planned for early August during typical low flow. Stream flow will be diverted
away from the stream channel disturbance by creating temporary diversion berms from in -stream cobble
substrate. Thereby, the majority of the flow shall be diverted around work areas.
2. Please provide additional clarification on how construction equipment will access the project area and identify
these locations and any associated jurisdictional impacts on the proposed site plan. [15A NCAC 02H .0502(c)]
Response: A medium sized trackhoe shall be the only vehicle accessing the river. Each log vane structure is
anticipated to take a day to construct, thus time in the river will be relatively short. I have attached an access plan
with a typical design. Two locations are planned to access the river for construction of the two vanes and
revetment, although the majority of the work on the revetment will occur from the bank. These access points
would add up to about 100 feet of stream bank excavation that I had not accounted for in the PCN application
when I had planned a single non -constructed access at the lower end of the project. Since then the NC WRC has
asked for minimizing the tracking of the equipment along the reach. As a result, these two access points are
proposed to get in and out of the river most efficiently.
From: Yankura, Kaylie [mailto:[e-mail]]
Sent: Friday, May 8, 2020 3:30 PM
To: Dodd, Brady N -FS <[e-mail]>
Cc: Brown, David W CIV USARMY CESAW (US) <[e-mail]>
Subject: Request for Additional Information - Davidson River Stream Enhancement DWR #20200498
Mr. Dodd,
On April 9, 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

1. Per Condition II. 9 of GC 4134, all work must be done in the dry. Please provide additional details regarding how
stream flowwill be diverted during proposed construction and enhancement activities. [15A NCAC 02H .0506(b)(3)
and (c)(3)]
2. Please provide additional clarification on how construction equipment will access the project area and identify
these locations and any associated jurisdictional impacts on the proposed site plan. [15A NCAC 02H .0502(c)]
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
919 302 7909 mobile
kaylie.yankuraa-ncdenr.gov
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TEMPORARY STREAM ACCESS DETAIL (Page 1)
Davidson River blw Hatchery Project
Proposed
access point
to Upstream
Vane
Proposed
access point to
Downstream
Vane and
Toewood
Revetment EquipmentAccessRoute~8’
Bankfull Elevation
EXCAVATE & PLACE
SOIL OVER ADJACENT
TERRACE
COIR LOG AT
TOE OF SLOPE
PLAN VIEW SKETCH W/ ACCESS ROUTE
CROSS SECTION TYPICAL DETAIL FOR ACCESS ROUTE
FINAL SLOPE
TO FACILITATE
ACCESS
River Bed
>50’
TEMPORARY STREAM ACCESS DETAIL (Page 2)
Davidson River blw Hatchery Project
2:1 CONSTRUCTED
SLOPE ON SIDE SLOPES
COIR MATTING PLACED
ON SLOPES, ~400 SQ FT
NOTES:
1.COIR LOG INSTALLED AT TOE OF STREAM BANK.
2.ACCESS RAMP & SIDE SLOPES CONSTRUCTED AT A 2:1 (2 HORIZONTAL TO 1
VERTICLE) SLOPE.
3.DIRECTLY FOLLOWING USE:
a)PLACE TRANSPLANTS FROM THE SURROUNDING AREA AT THE TOE
OF THE ACCESS RAMP UPTO BANKFULL ELEVATION
b)SEED, MULCH, & PLACE COIR MATTING ON ACCESS RAMP AND SIDE
SLOPES
c)PLANT SLOPES WITH NATIVE VEGETATION
COIR LOG AT
TOE OF SLOPE
2:1 SLOPE
2:1 SLOPE 2:1 SLOPE
ACCESS RAMP
WATERS EDGE
COIR LOG AT
TOE OF SLOPE
SIDE VIEWPLAN VIEW
VERTICLE
STREAM BANK
NOT TO SCALE