20150016 Ver 2_6-24-2022 info received email_20220624

Annino, Amy M
From: Dodd, Brady -FS <[e-mail]>
Sent: Friday, June 24, 2022 10:57 AM
To: Annino, Amy M; David Brown ([e-mail]); Leslie, Andrea J; Aiken, Stan E
Subject: [External] RE: [External Email]DWR 20150016 V2 Davidson River Channel Relocation - Add Info
Request
Attachments: Davidson River Design 2022_StructureLocations.pdf
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Hi Amy,
please consider the attached pdf. document and the below statement to satisfy the permitting needs as requested.
Thank you,
Brady
#2. Construction Sequence:
1. Working off-line, excavate new channel and install in -stream structures. Stockpile soil between new channel
and existing channel. Stabilize banks with transplants and/or mat.
2. Remove soil at upstream end of new channel to allow stream to flow into new channel.
3. Plug existing stream with excavated soil from new channel. Stabilize plug and fill in existing stream channel
with transplants and/or mat, seed and straw mulch.
4. Plant all disturbed area with seed, live stakes, and bare roots.
From: Annino, Amy M <[e-mail]>
Sent: Tuesday, June 14, 2022 5:07 PM
To: Dodd, Brady -FS <[e-mail]>; David Brown ([e-mail])
<[e-mail]>; Leslie, Andrea J <[e-mail]>; Aiken, Stan E
<sta n. a i ke n@ n cd e n r. gov>
Subject: [External Email]DWR 20150016 V2 Davidson River Channel Relocation - Add Info Request
[External Email]
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On May 18, 2022, the Division of Water Resources (Division) received your application requesting a 401 Water Quality
Certification from the Division for the subject project. On May 20, 2022, the Division received the required fee. 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:
1. Please show the location of all proposed in -stream structures, riffles, and pools on the site plan for the new
proposed channel. For each proposed structure type (cross vane, J-hook vane, toe wood), provide a proposed
longitudinal profile and a proposed typical cross-section with dimensions. [15A NCAC 02H .0506 (b)]
1

2. Per condition II. 8 of Water Quality Certification 4255 all work in or adjacent to streams shall be constructed so
that the flowing stream does not come in contact with the disturbed area. Please provide a construction
sequence that details the method of diversion and/or dewatering to be utilized at the site and the sequence of
construction events to be followed to ensure compliance with this condition. [15A NCAC 02H .0506(b)(1) and
15A NCAC 02H .0502(a) and (c)]
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 July 15, 2022. 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.
Amy Annino
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 4656 office
984 232 1222 mobile
[e-mail]
si
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2

d�LL404
sLopmn
fhREST
J-Hook Vane
and Toe Wood
FLOODPLAi N
\\\:;
.•■••••••*• •
AREA OF FILL
(FLOODPLAIN
CONSTRUCTION)
90.00
st.awiq
Fog5 T
L ANDSL1DE
SLoPtNG
LONGITUDINAL PROFILE - NEW CHANNEL CONSTRUCTION
(Conceptual Drawing)
Design Specifics:
• Continue existing riffle into new channel until Sta. 1+00 at
a 2-3% slope,
• transition into run until Sta. 1+60,
• transition into pool until Sta. 2+70,
• transition into glide until Sta. 3+00,
• riffle down to existing river channel pool at a 2-3% slope.
Pool Dimensions:
Pool length LPaol (includes run & glide): 64 - 80'
Pool length ratio (Lpow/W ,): 1.94 - 2.43'
Pool -to -pool spacing, p-p: 132 - 166'
Pool -to -pool spacing ratio, (p-p/Waf): 4.0 - 5.0'
Davidson River - Longitudinal Profile of New Channel
0 20 40 60 80 100 120 140 160 180
Stationing (feet)
00 220 240 260 280 ?(10 320 340 360 380 400 20 440 460 "p1) 50) 520 540 560 580 600 620 640
95.00
a 100.00 .
TIE ikTO
UPSTREAM
'Ai 105.'CHANNEL
110.00
-CROSS
SECTION
A -A
f- Channel Bea -torn
"DAM
LOCATION
J-Hook Vane and Toe Wood
— — — Water Surface R.) n kft:ll
TIE INTO
DOWNSTREAM
CHANNEL

c
0
a.F
100.0
99.5
99.0
98.5
98.0
97.5
97.0
96.5
96.0
95.5
95.0
00
Typical Riffle Cross -Section
BKF
10.0 20.0 30.0 40.0
Distance (ft)
50.0
60.0
70.0
100.0
99.0
98.0
97.0
96.0
95.0
0.0
Typical Pool Cross -Section
B
KF
10.0 20.0 30.0 40.0
❑istance (ft)
50.0
60.0
70.0