HomeMy WebLinkAbout20030164 Ver 1_COMPLETE FILE_20030213D
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Michael F. Easley
Governor
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan Klimek, PE
Division of Water Quality
March 17, 2003
Mr. John Vilas
E'nv Consulting Services
3764 Rominger Road
Banner Elk, NC 28604
Subject: Stream Restoration/Enhancement
Laurel and Worley Creek
Watauga County, NC
DWQ# 030164
Dear Mr. Vilas
This Office is in receipt of the plans for the stream restoration projects of approximately 1420 feet of Laurel
Creek and 490 feet of Worley Creek in the Watauga River Basin originally submitted to this Office on February
13, 2003, and revisions received March 14, 2003. DWQ Staff reviewed the plans and determined that stream
restoration and/or enhancement would be achieved.
The stream impacts. associated with the project may proceed without written approval from the Division. Please
be advised that seven copies of a complete, formal application and a $475.00 fee is required for projects
intended for compensatory mitigation credit (see General Certification No. 3353, issued March 18, 2002). Any
request for mitigation credit shall be addressed under separate cover.
If you have any questions regarding this matter, please contact Mr. Todd St. John at (919) 733-9584.
L)n
o R. Dorney
We lands Unit Supe isor
cc: Mr. Todd St. John, Wetlands
Winston Salem Regional Office
File
A
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
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E'nV
Environmental Consulting Services Inc.
March 13, 2003
'Fodd St. John
NC DENR DWQ
2321 Crabtree Blvd.
Parkview Building
Raleigh, NC 27604-2260
RE: Laurel Creek Stream Restoration Project
DWQ Project # 030164
Response to Comments Dated 2-18-03
Dear Todd:
3764 Rom inger Road
Banner Elk, NC 28604
Ph/Fax: 828-297-6946
e-mail: wccjv@skybest.com
Attached are responses to comments, please let me know if you have any questions or require
additional information. We hope to go to construction on this as close to April 15 as possible. Thanks
for your help and input on this.
Sincerely,
John C. Vilas
President, E'nV Environmental Consulting Services Inc.
WETLANDS/ 401 GROUP
MAR 14 2003
WATER QUALITY SECTION
NO03SAinvul -11',
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dnm * / SONY-0M
Laurel Creek Stream Restoration
DWQ Project No. 030164
Watauga County
Response to comments provided by DWQ dated 2-18-2003
Laurel Creek Issues:
1. Reference streams: In addition to the two Laurel Creek reaches (Above Project and Near River)
reported in the application there were additional sources of reference data used to develop the proposed
design. Most notably are the Craig Branch reach surveyed by Dan Clinton and a mini regional curve
developed for the Laurel Creek subbasin of the Watauga River Basin. The mini regional curve was
generated from several reaches from Laurel and Worley Creeks as well as the Watauga and Elk River
gages. The Laurel Creek - Above Project reach is located immediately upstream of the proposed project
reach. The Laurel Creek - Near River reach is located almost 2.5 stream miles downstream of the project
reach near the confluence with the Watauga River.
2. Pool to Pool spacing on Laurel Creek: Mean P-P spacing to Wbkf ratio of 3.6 was initially proposed.
This value was based on the Craig reference reach as well as the hybrid B/C nature of the proposed
channel. The proposed channel has an average slope of 2.5% but an entrenchment ratio of greater than 3
and a very accessible floodplain. Several long pools skewed the ratio even more to the high side. In
response to your comment we have taken another look at this and agree that decreasing the P-P spacing
would be prudent. Without changing overall pattern we have adjusted the profile and added additional cross
vane structures such that we will have numerous small structurally controlled pools intermediate to the
larger pools at meander bends. The changes result in a new P-P/Wbkf ratio of 2.2.
3. Sediment Transport: The D50 and D100 from the pavement and bar/subpavement samples used in the
calculations were based on multiple pebble counts performed in different segments of the project reach.
Notwithstanding the pebble counts, visual evaluation of available sediment indicated that we should design
a channel with extra energy because of an abundance of much larger (300 to 400 mm) clearly mobile
particles in several areas of the channel. We were concerned that if the channel lacked this additional
energy we could have trouble moving delivered sediment during larger floods. Also because we have
designed a B-channel with a high entrenchment ratio we do not expect to see much increase in depth and
energy during greater than bankfull events and we wanted to make sure there would be sufficient energy
during these events.
Given the rationale for a high-energy channel, we will enhance stability through the use of very large grade
control cross vanes with deep footers. We already have the rock on-site for this project and the typical
boulder is 900 mm across the intermediate axis and weighs approximately 4 tons. We have on-site
approximately 1200 tons. Using rock of this size with deep footers will insure that we can maintain grade at
control structures placed at the head of every riffle.
Worley Creek Issues:
1. Pattern Issues: Regarding the comment on meander width ratio and also the discrepancy between
proposed and reference meander length ratios, we note that this is a priority two project and the decision
was made to sacrifice ideal pattern for the sake of preserving the existing channel bed and minimizing the
disturbance to existing habitat. The initial submittal shows a substantial amount of pattern realignment,
most of this has been eliminated (see revised plans). One reason for this is during a field meeting with
several NC WRC representatives, they recommended this scaled back approach due to the Brook Trout
present in Worley Creek. Concerns over cost overruns for the total project have also provided
encouragement for scaling back this phase of the project. Basically the approach for the Worley Creek
reach will be to lay back banks to provide a bankfull bench, install rock cross vanes to correct bedform
sequence, soften one meander bend, install rock vanes and root wads in bends, and revegete the riparian
zone. We are leaving the channel bed as is except for using the cross vanes to flatten meander bends into
pools and steepen straight sections into riffles where needed.
In redrawing the proposed planview to reflect this scaled back approach we found that changes to the
profile were also necessary as stationing and stream length had changed. The P-P spacing is still below that
suggested by the reference reaches however this is a consequence of working with the existing pattern.
Through the use of cross vane/grade control structures we have increased the spacing slightly over the
existing condition.
2. Sediment Transport Issues: The sediment transport calculations for both the existing and proposed
conditions as well as the plots for the pavement and subpavement pebble counts are included in this
submittal. The results from the existing condition calculation indicates a slight degrading condition that
perhaps has contributed to the incised condition of the reach. The calculation for the proposed condition
indicates a stable to slightly degrading condition. We view this favorably as we can control channel mean
slope and facet slope with proposed grade control structures. The Sediment Transport Validation
calculation and Shields Diagram analysis indicates that the channel may slightly lack energy, however
Shields is not considered to be as accurate in this range. In summary we feel that since these two
calculations closely bracket our target condition we are likely to be very close to the proper channel
dimension and profile.
Laurel Creek Design
Reference Parameter Spreadsheet
Reach Name
Laurel Creek above
project
Laurel Creek near
River Existing Condition
Laurel Creek
Project sta. 2+784
Proposed Laurel
Creek Proj.
Craig (Clinton)
Stream Type B4 B4 F4b B4 B4
Drainage Area 2 7.1 2.2 2.2 1.8
Bankfull Width mean: 25.3 range:
23-29.5
47
43
26.5
27.6
Bkf mean depth mean: 1.6 range:
1.37-1.89
1.62
1.002
1.6
1.05
W/D 15.8 29 42.9 16.6 26.8
Area, bkf mean: 40.9 range:
38.7-43.4
75.95
43.075
42.5 mean: 29.5 Range:
26-33
mean Velocity 6.1 ft/s 6.2
bkf Q 250 cfs 265 265
max depth bkf mean: 2.4 range:
2.1-2.74
2.62
2.1
2.75
1.6
d-max/d-bkf 1.5 1.62 1.62 1.52
bank height ratio 1.3 1 3.75 1
Width fpa 55.5 180 50 75+
Entrenchment Ratio 2.4 3.8 1.16 3+ 1.35
Meander Length 215 185
Belt Width 74 70
Radius of Curvature 104 50
Lm/Wbkf 5 7
Rc/W bkf 2.43 1.9
Wbit/Wbkf 1.72 2.6
Sinuosity 1.04 1.25 1.1
Valley Slope 0.03 0.03
Avg. Slope 0.039 0.0228 0.0275 0.025 0.0331
Pool Slope mean: 0.0069
range:.001-.013 mean:.0039
range: 0-.011
1.14
0.0047
Riffle Slope mean:.041
range:.013-.095
0.052 mean:.07
range:.043-.25
Glide Slope
Run Slope
Sp/Savg 0.18 0.17 0.415 0.18
Sr/Savg 1.8 2.08 2.11
Sg/Savg
Srun/Savg
max pool depth 3.93 4.66 4.45 3.75
Dmax-p/Dbkf 2.46 2.88 4.44 2.75
Width-pool 29 26.9 34.5
W-pM-bkf 1.15 0.63 1.15
Area-pool 48.8 57.4
A-p/A-bkf 1.4 1.35
P-P spacing mean: 46.2 range:
19-78 mean: 66.2
range: 21-118
74.7 mean: 60
range:(45-75) mean: 100.5
range:42-156.5
P-P spacing/Wbkf 1.83 (0.75-2.6) 1.45 (0.442.5) 1.74 2.2 (1.7-2.8) 3.64
Channel Materials
D16 1.5 1.05 1 1
D35 7 15 18 18
D50 39 60 34 34
D84 220 205 120 120
D95 450 470 250 250
Riffle Count
D16 9 1.8
D35 26 20.5
D50 54 40.2
D84 190 135
D95 400 205
Sub-Pavement
D16 2 4.6
D35 4.1 21
D50 11 43
D84 46 97
D95 80 110
Bar Sample
D16
D35
D50
D84
D95
LAUREL CREEK PROPOSED PROFILE
Watauga County: Area vs DA
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Drainage Area miles
Watauga County: Width-bkf vs Drainage Area
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Drainage Area miles
Lower Worley Creek Restoration Project Re ference Reach Dat a
(station 1+20: end) (station 0:-1+20) e?
Reach Name Existing Channel Existing Channel Basin Creek Worley Ck (upper) Proposed Channel
Stream Type C4 E4 C4 C4 C4
Drainage Area 1.3 sq mi 1.3 sq mi 8 sq mi 0.96 sq mi 1.3 sq mi
Bankfull Width 15 ft loft 30.7 ft 15 ft 16-18 ft
Bkf mean depth 1.2 ft 1.6 1.9 ft 1.2 ft 1.22
W/D 12.5 6.25 16.4 12.8 14.7
Area, bkf 18.1 sq ft 16 sq ft 57.4 sq ft 17.6 sq ft 22 sq ft
mean Velocity 4.8 ft/sec 4.9 ft/sec 5.4 ft/sec
bkf Q -120 cfs -120 cfs -120 cfs
max depth bkf 1.7 2.35 ft 2.5 ft 1.7 ft 2.0 ft
d-max/d-bkf 1.4 1.47 1.7 1.4 1.6
bank height ratio 1.6 1.4 1 1 1
Width fpa 23 ft. 120 +/- ft 85 ft 50 ft 75 + ft
Entrenchment Ratio 1.5 12 2.8 3.3 4.2+
Meander Length 98 ft 98 ft 350 ft 135 ft 114-140 ft
Belt Width 52 ft 40 ft 105 ft 71 ft 60 ft
Radius of Curvature 20 ft 20 ft 77-134 ft 20.70 28 ft
Lm/W bkf 6.5 9.8 11.4 9 6.3-8.75
Rc/Wbkf 1.33 2 2.5-4.4 1.38 2.8
Wblt/Wbkf 3.5 4 3.4 4.7 3.2
Sinuosity 1.3 1.26 1.02 1.5 1.2
Valley Slope 0.0116 0.0174 0.014 0.025 0.016
Avg. Slope 0.0144 0.0138 0.014 0.017 0.012
Pool Slope 0.0037 0.0026 0.005 0.0035 0.0024
Riffle Slope 0.026 0.031 0.051 0.041 0.0255
Glide Slope
Run Slope
Sp/Savg 0.26 0.19 0.39 0.21 0.21
Sr/Savg 1.8 2.25 3.61 2.46 2.04
Sg/Savg
Srun/Savg
max pool depth 2.88 ft 3.1 ft 1.7 ft 1.8 ft 2.5
Dmax-p/Dbkf 1.7 1.94 0.9 1.5 2
Width-pool 18 ft loft 40.6 ft 15 ft 24
W-p/W-bkf 1.2 1 1.3 1 1.3
Area-pool 28 sq ft 19.2 sq ft 64.4 sq ft 26.8 sq ft 28.6
A-p/A-bkf 1.5 1.2 1.1 1.5 1.3
P-P spacing 38-80 ft 38-80 ft 224 ft 125 ft 62-110 ft
P-P spacing/Wbkf 2.5-5.3 2.14.4 7.3 8.3 3.4-7
Channel Materials
D16 0.35mm 0.35mm 4.8mm 1.7mm 0.35mm
D35 4mm 4mm 20mm 8mm 4mm
D50 9mm 9mm 38mm 45mm 9mm
D84 100mm 100mm 130mm 160mm 100mm
D95 250mm 250mm 230mm 230mm 250mm
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Entrainment Calculation Form
..,
Stream ore ,. _ - Reach: sz? Li +58. .; r 41
Date: Observers
Critical Dimensionless Shear Stress:
ccr = 0.0834(didso)-OM2
Value variable D
efnkion
ch(mm) G ?
DW Bed Material (LTA/ from rM pebble count)
c6 (mm) Bar Sample D50 or Sub-pavement DW
?o.as 1 -Cci
ss
Crocal
••.
Banldtrti Mean Depth Required for Entrah meet of Largest Particle in Bar Sample:
dr = (Tci*1.WDj/Sq
Value Variable Definition _
, O A- TCt CrifKgd Dimes Shear Stress
Eh (Riot) Lanjest Particle *am bar sample,
t? ?D L SQ (ttAt) E)asOM 8wkf A vier Surface slope
dr (ft) 18anMd Mean Depth Required
d. (ft) ` E?s8 Bankhrii Mean Depth (from Mile crass sec*M)
Circle: Stable (de(d. =1) Aggradatg (cVd, <1) >9
Bankfull Water Surface Slope Required for Entrak m nt of Largest Particle in Bar Sample: .
Sr = ttc;j*1-65Wde '$AS Mhowsw SPOCKC1M do of I11C
Value Variable Definition
. ?? '[tit Crr'?'cat FSior>loss Shear Stress
r? . 3 G D I (tee) Largest particle from bar Saute
Y' ?a dQ (ft)
1 S, OUR)
Ct2,11
Circle: a'? (S Emsting Bankkd Mean Depth (from tithe cross section)
kfull Water Surface Slope Required
A=1) - AWadkg ( <1) ( >1
Sediment Transport Validation
1 IQ a in Bw Sample Dj (mm)
0 , 013 Bantam Shear stress TQ=YRS ( = ??'[wG?R = l , aq s = ... ?t
Moue particL- sae (gran) at bankM shear stress (predk:ted by the Shields Diagram-13
ti7 M field boot-pM, Red field boot- p190)
Predrded shear stress requirW to awe movers ad of Di (torn) (see Shields D'ragrarrr Mn
field both-pM. Red field book p190)
G'w. -1- 4L tMWden.4 Mwimbuw 4M
Entrainment Calculation Form
Pw,
Stream: ?11? vfLt -- .s e I
?/`U d SQ
ReacW
Date: - 2 = U 3 Observers
Critical 13imensionless Shear Stress:
Tc; = 0.0834(cyd4O-S72
Vacua Variable Definition
1 l)S ?(mm) ` D50 Bed Material (i>ao km rye pebble cwt)
y Ow (rrun) Ber Sample DW or sub-paveum t l)W . '
1 12:•aa3
L--- 1 T? D! -I -Ain Shear Stress cmcw
Banldafi New Depth Required for Errbainmad of largest Particle in Bar Sample:
dr = (Tci" l-&S*DJ/Se 1:0 ==*Wo edsmcft%*Wcfseamm
Value Variable Defy llkm
f? 0 3 Tci Cry Dimes Shear Stress
QQ z S (tvlh E)dsft OankfiA Water Surface Slope.
1,1q 1 d,.m Bankfud mean Depth Required
J, Lz d. ( Banlduil Mean Depth (from riffs cross section) ?/?v ose
Circle: Stable (cVdr =1) Aggrac ft (d.4 <1) ( > _
BanMil Water Surface Slope Required for Entrainment of Largest ParWle, in BarSample:
.Sr= (TCi"1.65"DJ/de 1.65-submerged WeciGcstdoitatsedimF
Value Variable Definition
n?a?3 TC Criacai Der?ensioMess stress
3 b Di (feet) Largest parade morn bar s-anVle
/, Z Z de QQ Emsang BmkbA Mean Depth (from rme cross section)
Q,o I- I sr ( Water Su face Slope Reid P J? D- o 12- 0k
Cirde: (S ew=1.) AWaftlg (S^-1) Degrading (S^ >1)
Sediment Transport Validation
I ! Largest Parade in Bar Sarroe Dj (mm)
Q, g Bar*U Shear Stress Ta=-fRS Mile) f -(ZZ: 4 JZa 1. r 3 s _ b, o1 Z
H Moveable parade ske (rmn) at baMdW shear stress (pred'ded by the Stields Diagram; Blue
Sj-pY field boolc . Red rwN bode p190)
?• ?- Precicted shear shess recluked to it a ffovemerit ofDj (mm) (see Stdelda DkKjrdm Blue
field bookpM. Red field book pIN)
.Wh*.C fft DoatrrrerKs/Class Fdesff~Offnaff M ft=.* 1s IMi wW Hydrology 9100
Worley Creek Subpavement Sample Station 4+86 2/25/03
110
100
90
80
70
s
.r
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w 60
m
50
es
E
40
30
20
10
Worley Creek Pavement Count 4+88 2/25/03
110
100
90
80
I
70
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50
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40
30
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OHO wAT?'QQG Michael F. Easley
Governor
r William G. Ross, Jr., Secretary
q Department of Environment and Natural Resources
0 Alan W. Klimek, P.E., Director
Division of Water Quality
February 18, 2003
John Vilas
E'nv
3764 Rominger Road
Banner Elk, NC 28604
Subject: Laurel Creek Stream Restoration
DWO Project No. 030164
Watauga County
Dear Mr. Vilas:
The Wetlands Unit staff reviewed the stream work plans for the subject project and determined that additional information
is necessary to complete the technical review process. The required additional information is as follows:
1. Reference Stream, Laurel Creek
Are the upper and lower parts of this stream the reference streams? .
2. Morphological Measurements
Laurel Creek -The reference streams suggest pool to. pool spacing to bankfull width ratios of less than 2. The
design stream has a ration of almost 4. Please explain this discrepancy.
Worley Creek - The reference and design streams have very different meander width ratios. Please explain the
discrepancy. The reference stream has a sinuosity of 1.02. It is not clear why this would be classified?as a C type
stream. The pool to pool spacing to bankfull width values differ from those of the reference stream. Please explain
this discrepancy. Also, the pool to pool spacing in the table appears to be different from the shown in the
longitudinal profile of the design stream. Please explain.
Sediment Transport Analysis
The sediment transport analysis for Laurel Creek appears to indicate that the channel is competent to move the
largest particles. However, the analysis suggests that the stream may be able to transport larger particles than may
be available resulting in degradation. Please explain how the stream will remain stable.
Please provide the sediment transport analysis for Worley Creek.
If you have any questions or would like to discuss this project, please contact me at (919) 733-9584. Also, please note
that the Internal Technical Guide for Stream Work in North Carolina, April 2001, and other documents and information can
be downloaded from the Wetlands Unit web site at hftp://h2o.ehnr.state.nc.us/ncwetlands/restore.htmi.
rn St. J hn, PE
Environmental Engineer
cc: Winston-Salem Regional Office
Cyndi Karoly
File
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
919-733-1786 (phone), 919-733-6893 (fax), hftp://h2o.enr.state.nc.us/ncwetlands/
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_.North Carolina Wildlife Resources Commission fry _
Charles R. Fullwood, Executive Director
MEMORANDUM { R
t : •..?.?.. I5 0 NJ !
TO: Tim Smith, Permit Coordinator, Asheville Office If r
U.S. Army Corps of Engineers U", FEg ?. , ?(w
FROM: Ron Linville, Regional Coordinator.' WTtAN
Habitat Conservation Program ATE 11ALI EC J
DATE: February 5, 2003
SUBJECT: Review ofNWP 27 Permit Application, Laurel and Worley Creek Restoration
Project, Watauga County
The applicant is requesting a letter of concurrence from the North Carolina Wildlife
Resources Commission (NCWRC) to obtain a 404 permit from the U.S. Army Corps of
Engineers for die referenced stream restoration project. The NCWRC has reviewed information
provided by the applicant, and field biologists on our staff are familiar with habitat values of the
project area. These comments are provided in accordance with provisions of the Clean Water Act
of 1977 (33 U.S.C. 466 et. seq.) and the Fish and Wildlife Coordination Act (48 Stat. 401, as
amended; 16 U.S.C. 661-667d).
The applicant proposes to restore the lower portions of Laurel Creek and Worley Creek
using Rosgen Priority 1 and 2 restoration techniques. Large berms and previous land
disturbances have reduced geomorphic stream and flood plain functionality. Restoration will
return the stream to portions of the old stream channel and restore floodplain access to reduce
destabilization within the ecosystem. Existing wetlands will be enlarged and additional wetlands
may be provided during the restoration. In addition, an off line pond will be established where
the stream is currently over widened. 'this pond will be fed by a water diversion. The streams in
the area support brook, brown and rainbow trout.
Based on the information provided by the applicant and our information on the range of
trout in the project area, we do not believe this project will cause significant effects to waters
supporting trout providing the following conditions are followed:
Instream work and land disturbance within the 25-foot wide buffer zone are
prohibited during the trout spawning season of October 15 through April 15 to
protect the egg and fry stages of trout from off-site sedimentation during
construction.
All design and restoration activities should follow state-of-the-art bioengineering
techniques. Existing berms should be modified or removed to the extent
Mailing Address: Division of :Inland Fisheries • 1721 Mail Service Center* Raleigh, NC 27699-1721
Telephone: (919) 733-3633 ext. 281 a Fax: (919) 715-7613
Laurel & Worley Creek 2 January 28, 2003
Bioengineering Restoration
necessary to ensure and restore maximum floodplain access to the restored
streams.
3. Ground moving equipment used should be new or have very few operational
hours in order to limit the potential petroleum releases. Spill containment
materials must be readily available especially if equipment will be used in stream
channels.
4. Stringent erosion control measures should be installed where soil is disturbed and
maintained until. project completion. Temporary or permanent herbaceous
vegetation should be planted in the trout buffer and on all bare soil within]. 0 days
of ground disturbing activities to provide long-term erosion control.
5. Only native riparian plant species should be used for the project.
6. Cattle exclusion practices should be provided to prevent future impacts to stream
stability, buffers and water quality.
7. Deed restrictions, conservation easements or other legal protective measures
should be placed on stream buffers. We recommend minimum twenty-five (25)
feet of undisturbed trout stream buffers; however, buffers of fifty (50) feet for
intermittent streams and one hundred (1.00) feet for perennial streams are
preferred whenever practicable for aquatic and terrestrial habitat benefits.
Thank you for the opportunity to review and comment on this project. If you have any
questions regarding these comments, please contact me at 336/769-9453.
Cc: John. Dorney, DWQ
NWP 27
PERMIT APPLICATION
LaureCCreek Restoration
January 23, 2003
Applicant:
Blue Ridge RC&D, Inc.
1081-2 Old US Hwy. 421
Sugar Grove, NC 28679
Agent:
EWV
0301
1 164
Envimmnum' al Consulting Services Inc.
3 764Rominger Rd.
Banner Elk, NC 28604
EW
EI1V11'OIt Consulting Sc vices Irw.
January 27, 2003
Mr. Tim Smith
USACE
Asheville Regulatory Field Office
151 Paton Ave, Rm 208
Asheville, NC 28801.5006
RE: Laurel Creek Restoration Project
Dear Tim:
3764 Rominger Road
Banner Elk, NC 28604
Ph/Fax. 828-297-6946
e-mail: wccJvQskybesLcom
Enclosed is an application for NWP 27 for the referenced project. We are also sending this package to
Ron Linville with NCWRC and will soon be sending three sets of plans to NC DWO.
If you have any questions regarding this information please call me at 828-297-6946, thank you.
Sincerely,
hn C. Vitas
President, E'nV Environmental Consulting Services Inc.
Cc: Mr. Stan Steury, Blue Ridge RC&D
Mr. Ron Linville, NC WRC
Upper Laurel Creek Project
Application
Laurel Creek Design and
3 Existing Conditions
Worley Creek Design and
Existing Conditions
I
Office Use Only Form Version April 2001
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Check all of the approval(s) requested for this project:
X Section 404 Permit
? Section 10 Permit
? 401 Water Quality Certification
? Riparian or Watershed Buffer Rules
2. Nationwide, Regional or General Permit Number(s) Requested: NWP 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: X per WQC #3353
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
H. Applicant Information
1. Owner/Applicant Information
Name: Blue Ridge RC&D Inc.
Mailing Address: 1081-2 Old US Hwy. 421
Sugar Grove, NC 28679
Telephone Number: 828-297-5805 Fax Number: 828-297-5928
E-mail Address: blueridgercd@s!WjNst.com
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: John C. Vilas
Company Affiliation: E'nV Environmental Consulting Services Inc.
Mailing Address: 3764 Rominger Road
Banner Elk NC 28604
Telephone Number: 828-297-6946 Fax Number: 828-297-6946
E-mail Address: wcc-jv@Akybest.com
Page 3 of 12
M. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Laurel Creek Restoration
2. T.I.P. Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 1961-51-4080-000
4. Location
County: Watauga Nearest Town: Banner Elk
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): From Banner Elk take Hwy 194
North approx. 4 miles turn left on Rominger Road go approx 1.5 miles bear right on dirt road
d
(staying on Rominger) Go approx 2.5 miles. Site is adjacent to hav field behind 3 barns an
near mail box # 3764.
5. Site coordinates, if available (UTM or Lat/Long): 36 deg 13'23" N, 81 deg 50' 5" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this
application:Agricultural, hay field and pasture
7. Property size (acres): 196 acres
8. Nearest body of water (stream/river/sound/ocean/lake): Laurel Creek
9. River Basin: Watauga
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
Page 4 of 12
Describe the purpose of the proposed work: To restore approximately 1400 linear feet of Laurel
Creek and approximately 650 linear feet of Worley Creek immediately above the confluence
with Laurel Creek (see project narrative
10. List the type of equipment to be used to construct the project: Standard construction
equipment: track excavator, backhoe dump truck loader
11. Describe the land use in the vicinity of this project: Rural residential, agricultural and
undeveloped Very low density.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
A USACE 404 permit and a NCDENR 401 permit was obtained previously for the Worley Creek
Restoration Project in 1999, the previous project is upstream of the currently proposed work on
Worley Creek Previous permit #'s• NC WQC Project # 980342 (issued 5-19-98), USACE 404
# 199830459 (issued 3-15-99) The previous project restored approximately 1600 linear feet of
F4/5 channel with a meandering, E4/5 channel and created/restored/enhanced over 5 acres of
wetlands The previous proiect area is surrounded and protected by a 13 acre conservation
easement The proposed project will not impact the previous project in any way.
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: No additional 404/401 permit requests are anticipated for this project.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
Page 5 of 12
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Wetland Impacts
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
es/no) Distance to
Nearest Stream
linear feet
Type of Wetland***
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http:/hNiNiA-.fema.soc.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of existing wetlands on the property: approx 10 acres
Total area of wetland impact proposed: 0.0
2. Stream Impacts, including all intermittent and perennial streams
Stream Impact
Site Number
(indicate on ma
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please specify)
Laurel Creek Fill/ bank
grading/flooding 1420 Laurel Creek 35 feet Perennial
Worley Creek Bank
grading/Fill 490 Worley Creek 18 feet Perennial
Page 6 of 12
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
w"iv.usss.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., %N-vo .tonozone.com,
vvNvy.,.mMNuest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 1910' Perennial,
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
indicate on ma)
Type of Impact* Area of
Impact
acres Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.
* List each impact separately and identify temporary impacts. Impacts include, but are not limitea to: nu, excavation, oreogmg,
flooding, drainage, bulkheads, etc.
4. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): X uplands X stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): An off-line pond is to be constructed in an excessively
wide and deep portion of existing, channel and adjacent upland areas. The pond will serve to
generate fill material needed on the project while reducing_ fill requirements. The pond will
be fed by a piped diversion from upstream
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Balance cut and fill on the project, aesthetics, recreation,
and habitat enhancement.
Size of watershed draining to pond: approx 2 acres. Expected pond surface area: 0.3 acres
Page 7 of 12
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The proposed work and associated impacts are proposed to restore and stabilize previously
altered channel areas that are currently unstable and eroding The pdMM purpose of this project
is to provide an overall jmprovement to water quality The methods proposed (root wads, sod
mats willow transplants and rock vanes are desi ng ed to provide the desired stability as well as
enhance instream habitat.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/newetiands/strm.gide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
Page 8 of 12
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
A permanent conservation easement with average width of 30 feet either side of the stream is
proposed over most of the project. Easement width will be reduced in the vicinity of the
existing structures
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/'%TD/index.htm. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0
Amount of buffer mitigation requested (square feet): 0
Amount of Riparian wetland mitigation requested (acres): 0
Amount of Non-riparian wetland mitigation requested (acres): 0
Amount of Coastal wetland mitigation requested (acres): 0
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
land?
Yes X No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at (919) 733-5083 to review current thresholds for environmental documentation.
Yes ? No X
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Page 9 of 12
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Neese), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )`?
Yes El No X If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet Multiplier Required
Mitigation
1 3
2 1.5
Total
* Zone I extends out N feet perpendicular from near nanK of cnannei; /.one L extends an
additional 20 feet from the edge of Zone 1.
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
NA
XII. Sewage Disposal (DWQ Only)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
NA
XUL Violations (DWQ Only)
Page 10 of 12
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No X
Is this an after-the-fact permit application?
Yes ? No X
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
,3-0
/-.2
Applicant/Ag is Signature Toknn C. UIIcL Date
(Agent's si ture is valid only if an authorization letter from the applicant is provided.)
US Army Corps Of Engineers Field Offices and County Coverage
Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell
US Army Corps of Engineers Avery Clay Jackson Polk
151 Patton Avenue Buncombe Cleveland Lincoln Rowan
Room 208 Burke Gaston Macon Rutherford
Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley
Telephone: (828) 271-4854 Caldwell Haywood McDowell Swain
Fax: (828) 271-4858 Catawba Henderson Mecklenburg Transylvania
Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham
US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes
6508 Falls of the Neuse Road Ashe Franklin Nash Surry
Suite 120 Caswell Forsyth Northampton Vance
Raleigh, NC 27615 Chatham Granville Orange Wake
Telephone: (919) 876-8441 Davidson Guilford Person Warren
Fax: (919) 876-5283 Davie Halifax Randolph Wilkes
Washington Regulatory Field Office Beaufort Currituck Jones
US Army Corps Of Engineers Bertie Dare Lenoir
Post Office Box 1000 Camden Gates Martin
Washington, NC 27889-1000 Carteret* Green Pamlico
Telephone: (252) 975-1616 Chowan Hertford Pasquotank
Fax: (252) 975-1399 Craven Hyde Perquimans
Pitt
Tyrrell
Washington
Wayne
Union
Watauga
Yancey
Wilson
Yadkin
*Croatan National Forest Only
Page 11 of 12
Blue Ridge
nesource Conservation & pevelopment
council, Inc.
1061
SUw .2 Grow, MC 22W99
U849 P5805 For. 8204914M
swsuurn. bra. OMdOI • VgN ii6o t. Peo MWAW- 68ft%kw? a A&M MOWt
January 22, 2003
NC DENR
Division of Water Quality
MSC-1921
Raleigh, NC 27699
To Whom It May Concern:
Buck Engineering of Cary, North Carolina is authorized to be our agent in the Laurel and
Worley Creels restoration project to be completed in Spring of 2003.
If you have questions, please give me a call at 828.297-5805 or entail me a
sst boone.net.
Sincerely,
Stan Steury, Coordinato
Blue Ridge RC&D Council, Inc.
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Name: VALLE CRUCIS Location: 036° 13'22.7" N 081 ° 49' 56.8" W
Date: 1/6/2003 Caption: Laurel/Worley Creek Project Area
Scale: 1 inch equals 1000 feet
copyright (C) 1997, Wptech, Inc.
2
Project: UPPER LAUREL CREEK RESTORATION
Location: Watauga, NC
PROJECT NARRATIVE
General:
The Upper Laurel Creek Restoration Project will restore approximately 2000 linear feet
of mountain trout stream in northwestern Watauga County, NC (see location map). The
project involves work on two streams, Laurel Creek (approx. 1500 linear feet) and
Worley Creek (approx. 500 feet). Worley Creek, at the project site, has a drainage area
of approximately 1.35 sq. mi. and contains a healthy population of native Brook Trout.
Another reach of Worley Creek approximately 2000 feet upstream of the current project
reach was restored in 1999. Laurel Creek at the project site has a drainage area of 2.2 sq.
mi. Laurel Creek is also a trout stream but contains primarily stocked populations of
Brown and Rainbow Trout. This project was identified as a high priority restoration site
in the July 2000 Watauga River Basin Riparian Corridor Conservation Plan funded
through NC CWMTF grant and prepared for the Blue Ridge Rural Land Trust.
The current project is funded through a CWMTF grant to Blue Ridge RC&D. The
contract for this project was awarded to Buck Engineering of Cary, NC and E'nV
Environmental Consulting Services Inc. of Banner Elk, NC.
The design objectives of the Upper Laurel Creek Restoration Project are to correct severe
stream bank erosion and channel migration problems. Also to provide an accessible
floodplain, create/enhance riparian wetlands, and stabilize and enhance aquatic habitat to
these designated troutwater streams. The existing channel is a F4b in the upper part and a
B4 with major problems in the lower section. The proposed channel is a stable B4. The
Worley Creek portion of this project will involve regrading and stabilizing of
streambanks to obtain a bankheight ratio of 1.0 and correct bank erosion problems. Some
pattern adjustment will also be incorporated to establish stable meander bends and higher
quality buffer in the vicinity of existing structures.
Upper Laurel Creek:
The upper end of the project reach lies in open mixed hardwood forest, terraces with a
thick Rhododendron subcanopy and hardwood canopy flank the valley floor. The lower
end of the project reach is bordered by a pasture/hayfield to the east (river right) and a
large rocky floodplain with numerous wetland pockets to the west. In addition to the
wetland pockets located in the large floodplain area, there are two additional small
pockets (approximately 900 sq. ft.) along the western edge of the valley near the upper
end of the project reach (see site plan).
This section of Laurel Creek has a history of alteration. Although the specific nature of
the alterations has not been confirmed, there is abundant evidence of past activities. The
most significant feature is a large berm 8-10 feet high and 400 feet long that confines a
long straightened run through the middle portion of the project reach. The upper section
contains areas that appear to have been graded down two feet as well as numerous
mounds of earth. The lower section also contains numerous mounds of earth. All of these
mounds have been in place for at least 50 years as evidenced by the size on trees growing
out and interviews with long time residents. It is suspected that most of the berms and
mounds are related to past sand and gravel mining operations. A large section of
abandoned channel exists along the western edge of the valley that likely was Laurel
Creek at one time. The reach immediately above the project reach is a stable B4. Farther
upstream is mostly AM with short sections of B3/4 and Aa+. Below the project reach
the valley broadens with a flatter slope; stream types are mostly C and F. There is an
existing ford at approximate station 8+00 that will be replaced in the new channel at an
appropriate location.
Lower Worley Creek:
The Lower Worley Creek project reach extends from the confluence with Laurel Creek
500 feet upstream The upper portion of the Worley Creek reach is bordered by a hay
field on the left and mowed grass area with barns and a garden on the right. A long
established ford exists in the middle of this reach and will be reconstructed at an
appropriate location on the restored reach. The lower portion flows through a forested
area with large earth berms and mounds left from past activity. These berms appear to
have caused problems in this area by limiting floodplain functionality and confining the
channel laterally.
Existing Condition:
Upper Laurel Creek:
The upper portion of the project reach (station 0+00 - station 3+90) is predominantly F4b
and contains severely eroding stream banks. Vertical and undercut banks 5 to 10 feet high
are common, split flow and excessive over widening are also widespread. In one area
several large trees have fallen into the channel due to severe bank erosion. This section of
the existing channel transitions from severely incised to fully entrenched.
From approximately station 3+90 to 7+00 the channel is straight and confined between a
steep eroding bank (right) at the edge of a pasture and a large berm 8-10 feet high (left).
The lower portion of the project reach is mostly B4 with a variety of problems. The left
berm ends (near station 7+20) the bank becomes relatively flat and sandy. The
streambed splits again near station 7+40 and does not converge until approx. station
9+50. The left bank through this section is eroding and unstable. After converging,
Laurel Creek straightens through approx. station 13+00. The right bank height increases
through this area becoming steep and eroded in places; the accessible flood plain is
located on river left. Channel bedform and pattern also are in need of adjustment in this
area. From station 13+30 where Laurel Creek takes a sharp left turn through the end of
the project reach, Laurel and Worley Creeks are merely separated by a 20 foot-wide
bankfull bench, this bench has been frequently overtopped and is gradually being eroded
away. If no action is taken in this area the confluence of Laurel and Worley Creeks will
soon be shifted upstream approximately 100 feet
Sinuosity in the existing channel is low (1.04) due largely to past channelization and the
presence of the large berm through the middle of the reach
Lower Worley Creek:
Upstream of the proposed restoration, Worley Creek is a stable E5 through an area with a
broad accessible floodplain and wetlands. Problems with incision begin just above the
beginning of the project. The bank height ratio in the upper part of the project reach is
1.3 to 1.4. Existing stream type in this area is an incised E4. Elderberry, willow and
blackberry stands populate the riparian zone through the pasture area (Station 0+00 -
Station 2+00). The left bank height increases between station 1+00 and 2+00, becoming
severely eroded through this area. The lower section, from station 2+00, continuing
through its confluence with Laurel Creek (station 5+00), Worley Creek is a C4 stream
type. Throughout this portion of the project reach the bank height ratio is 1.4 to 1.6. In
addition, large bennns that confine the channel have resulted in several areas of bank
erosion and a limited sinuosity.
Project description:
Upper Laurel Creek:
Laurel Creek will be restored as a priority 1-2 project, a proposed B4 channel of
approximately 1500 linear feet will be constructed to replace the existing channel. The
upper 800 +/- feet is a priority 1 design and the lower 700 +\- is a priority 2 design. The
design is based on reference reach data collected from two reaches of Laurel Creek, one
above the project reach and one below (see Reference Parameter Spreadsheet). Each
reference reach used in the Laurel Creek design was chosen due to similarities in
hydrophysiographic regioning, drainage areas, stream type and other desired
characteristics. Reference reaches listed in the Reference Parameter Spreadsheet as well
as others in the Watauga River Basin, including the Watauga and Elk River gages, were
incorporated into mini-regional curves used to calibrate design parameters.
Proposed channel dimension and profile parameters were set to ensure channel
competency based on entrainment calculations. Channel pattern parameters were
designed in accordance with regional dimensionless ratios and site constraints.
Several significant site features and practical constraints influenced the proposed design.
Due to high debris potential of the project reach it was considered essential to design
broad, functional and very accessible floodplain, as well as to provide a channel with
sufficient energy to move the largest available particles. The priority one restoration is
proposed in the upper part of the project where the existing channel is most severely
incised, this was found to be a more cost effective approach than constructing a
floodplain for the existing channel through grading. This also allows this portion of the
project to be constructed in the dry. The existing large berm will be removed by using it
as fill for the existing (to be abandoned) channel.
There is a substantial bedrock vane that extends into the area of the proposed channel in
the middle of the reach. This bedrock is exposed in a section of abandoned channel
(possibly old Laurel Creek). To decrease the likelihood of grade problems due to
excessive bedrock, the proposed channel was routed into a section of the old abandoned
channel through this area (proposed stations 5+25 to 7+50). The need to balance cut and
fill locally was a significant budget issue and was resolved by incorporating a pond in the
widest and deepest portion of the existing channel. This area of abandoned channel would
have required approximately 2600 cubic yards to fill. At the lower end of the project
reach Laurel Creek will be rerouted to allow for greater separation from Worley Creek.
The berms and mounds in this area will be removed or pulled back away from the
proposed channel.
Existing wetlands located in the project area will be enhanced due to their location on the
proposed active floodplain and riparian fringe. Existing wetlands will generally be
enlarged and several areas of new created wetlands will be established.
Channel stability will be achieved through a combination of techniques and measures. All
areas of restored channel will be constructed with a design bank-height ratio of 1.0.
Channel slope will be controlled with rock cross-vane structures at the head of all rifle
sections. Channel bends will be stabilized with a combination of root wads, rock vanes
and J-hook vanes. Channel banks will generally be graded with low angle banks and
seeded. Where sod is accessible (lower part of reach) it will be used extensively to line
graded banks. Where needed erosion control matting will be installed
Lower Worley Creek:
Beginning at upper end of the project (station 0+00) and extending through the incised
area (station 2+00) the restoration objective is to decrease the bank height ratio allowing
the stream to access its floodplain. This shall be achieved by raising the bed elevation,
with grade control structures, and creating a bankfull bench that extends an average of 10
feet on either side of the stream. The bankfull bench will be constructed to encourage
wetland creation throughout the upper part of the Worley Creek reach. This work will
result in a change in stream type from a incised E4 to a stable C4. Extending from station
2+00 through the end of the project the priority 2 restoration utilizes the existing mixed
hardwood riparian zone. The principal objective in the lower part of the reach is to create
a functional, accessible floodplain by restoring a bank-height ratio of 1.0, removing
berms and mounds, and adjusting pattern. The permanent ford will reconstructed in the
vicinity of proposed station 1+00.
Channel stability will be achieved through a combination of techniques and measures. All
areas of restored channel will be constructed with a design bank-height ratio of 1.0.
Channel slope will be controlled with rock cross-vane structures at the head of all rifle
sections. Channel bends will be stabilized with a combination of root wads and rock
vanes. Sod mats and Willow transplants will be used to line graded stream banks.
Planting Plan:
The riparian zone and buffer areas will be revegetated with a combination of trees, shrubs
and herbaceous plants. All disturbed areas will be seeded with temporary cover (rye or
millet depending on time of year) immediately following completion of work in those
areas. Permanent cover will be established at the end of the project. Trees and shrubs will
be planted throughout the riparian zone (except shrubs-only in powerline easements) at a
density sufficient to achieve a forested condition, approximately 400 stems per acre.
Species to be planted include: River Birch, Green Ash, Red Maple, Red Oak, Poplar,
Black Willow, Sycamore, shrub Willow, shrub Dogwood, and Alder.
Buffer:
A permanently protected buffer area will be established around the restored areas of both
Laurel and Worley Creeks. The buffer width will be an average of 30 feet from the top of
bank on each side of the proposed restored channels. The buffer width will be reduced
somewhat in the vicinity of the existing structures and garden along Worley Creek. The
buffer area will be placed into a permanent conservation easement to be donated to a
local land trust. Two permanent fords currently exist within the project area, one over
each creek; these will both be replaced. The landowner also retains the right to construct
a bridge across each of the streams in order to allow vehicular access to large sections of
the property that would otherwise be restricted from public road access by proposed and
existing easements. Such crossing locations are not planned nor have any locations been
identified. Any future crossings will involve spanning structures and will be planned in
accordance with all regulations applicable at the time such development is proposed.
Monitoring Plan:
An as-built survey of the restored channels will be conducted following construction and
after one or two flushing flows. Additional monitoring activities are to be conducted by
others.
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Laurel Creek Design
Reference Parameter Spreadsheet
Laurel Creek above Laurel Creek near Existing Condition Proposed Laurel Creek
Reach Name project River Laurel Creek Proj.
Stream Type 64 B4 F4b B4
Drainage Area 2 sq mi 7.1 sq mi 2.2 sq mi 2.2 sq mi
mean: 25.3 It
Bankfull Width range: 23-29.5 ft
47 ft
43 It
28.5 ft
mean: 1.6 It range:
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Bkf mean depth 1.37-1.89 It 1.62 ft 1.002 ft .
W/D 15.8 29 42.9 18.6
mean: 40.9 sq ft
range: 38.743.4 sq
ft
95 sq ft
75
075 sq ft
43
42.5 sq ft
Area, bkf . .
mean Velocity 6.1 ft/s 6.2
bkf Q 250 cfs 265 cfs 265 cfs
mean: 2.4 It
max depth bkf range: 2.1-2.74 ft 2.62 ft 2.1 ft
2.75 ft
d-max/d-bkf 1.5 1.62 1.82
bank height ratio 1.3 1 3.75 1
Width fpa 55.5 ft 1801
50 ft
75+ ft
Entrenchment Ratio 2.4 3.8 1.16 3+
215 ft 160 ft (155-230)
Meander Length
74 ft 70 ft (55-75)
Belt Width
104 ft 60 ft (55-75)
Radius of Curvature
Lm/Wbkf 5 6
RcNWbkf 2.43 2.3
1.72 2.6
1.22 1.25
Sinuosity
0.03 0.03
Valley Slope 0228 0.0275
039 0
0 0.025
Avg. Slope .
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mean: 0.0069 mea66:.0039
Pool Slope range:.001-.013 range: 0 .011 1.14 0.0047
mean:.041
nae:.013-.095 0.052
SplSavg 0.18 0.17 0.415 0.18
e.ie.,.... 1.8 2.08
max pool depth 3.93 ft 4.66 It 4.45 ft
3.75 It
Dmax-p/Dbkf 2.46 2.88 4.44 2.75
Width-pool 29 ft 26.9 ft 32 ft
W-PfW-bkf 1.15 0.63 1.15
Area-pool 48.8 sq ft 57.2 sq ft
e-nie_61rf 1.4 1.35
mean: 46.2 range: mean: 68.2
I e4 „c 7a7ft 105 ft
r-r spacing
P-P spacing/Wbkf -
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1.74
3.9
Channel Materials
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D84 190 135
D95 400 205
Sub-Pavement
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D84 46 97
D95 80 110
Bar Sample
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Lower Worley Creek Restoration Project Reference Reach Data
(station 1+20: end) (station 0:~1+20)
Reach Name Existing Channel Existing Channel Basin Creek Worley Ck (upper) Proposed Channel
Stream Type C4 E4 C4 C4 C4
Drainage Area 1.3 sq mi 1.3 sq mi 8 sq mi 0.96 sq mi 1.3 sq mi
Bankfull Width 15 ft loft 30.7 ft 15 ft 16-18 ft
Bkf mean depth 1.2 ft 1.6 1.9 ft 1.2 ft 1.22
W/D 12.5 6.25 16.4 12.8 14.7
Area, bkf 18.1 sq ft 16 sq ft 57.4 sq ft 17.6 sq ft 22 sq ft
mean Velocity 4.8 ft/sec 4.9 ft/sec 5.4 ft/sec
bkf Q --120 cfs -120 cfs -120 cfs
max depth bkf 1.7 2.35 ft 2.5 ft 1.7 ft 2.0 ft
d-max/d-bkf 1.4 1.47 1.7 1.4 1.6
bank height ratio 1.6 1.4 1 1 1
Width fpa 23 ft. 120 +/- ft 85 ft 50 ft 75 + ft
Entrenchment Ratio 1.5 12 2.8 3.3 4.2+
Meander Length 98 ft 98 ft 350 ft 135 ft 114 ft
Belt Width 52 ft 40 ft 105 ft 71 ft 60 ft
Radius of Curvature 20 ft 20 ft 77-134 ft 20.70 28 ft
Lm/Wbkf 6.5 9.8 11.4 9 6.3
Rc/Wbkf 1.33 2 2.54.4 1.38 2.8
Wblt/Wbkf 3.5 4 3.4 4.7 3.2
Sinuosity 1.3 1.26 1.02 1.5 1.2
Valley Slope 0.0116 0.0174 0.014 0.025 0.016
Avg. Slope 0.0144 0.0138 0.014 0.017 0.012
Pool Slope 0.0037 0.0026 0.005 0.0035 0.0024
Riffle Slope 0.026 0.031 0.051 0.041 0.0255
Glide Slope
Run Slope
Sp/Savg 0.26 0.19 0.39 0.21 0.21
Sr/Savg 1.8 2.25 3.61 2.46 2.04
Sg/Savg
Srun/Savg
max pool depth 2.88 ft 3.1 ft 1.7 ft 1.8 ft 2.5
Dmax-p/Dbkf 1.7 1.94 0.9 1.5 2
Width-pool 18 ft loft 40.6 ft 15 ft 24
W-p/W-bkf 1.2 1 1.3 1 1.3
Area-pool 28 sq ft 19.2 sq ft 64.4 sq ft 26.8 sq ft 28.6
A-p/A-bkf 1.5 1.2 1.1 1.5 1.3
P-P spacing 38-80 ft 38-80 ft 224 ft 125 ft 90 ft
P-P spacing/Wbkf 2.5-5.3 2.1-4.4 7.3 8.3 5
-
Channel Materials
D16 0.35mm 0.35mm 4.8mm 1.7mm 0.35mm
D35 4mm 4mm 20mm 8mm 4mm
D50 9mm 9mm 38mm 45mm 9mm
D84 100mm 100mm 130mm 160mm 100mm
D95 250mm 250mm 230mm 230mm 250mm
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Date: 9/3/2002
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GEOIEZTILE FABR]
FDGIER ROCK
ftTA"n*
A trench shall be dug in a
manner that the footer rocks,
cr05a header rocks and a
MIN of 1/3 of the wing
header rocks are buried
tra eats the betl surface
elevation, RackS are
precisely placed -In a
hydraulic thumb. Footer
roCkS Snall be placed first
with header rock S pl aCad
on top prior to baCkf i ]ling
the trench. In the center
(cross) portion the heatler
rocks shall be placed so
that the top of the header
rock IS an el a vat on aouaI
to the or pops Bd bad
elevat-ton. Geotertile fabric
shall be plac ed in the
trench with approx. 2 ft.
of overlap. Rpck f17] mater-
ial shall be 6aCk filled
around the fabric. The
header rocks on the wing
portion shall ba pl a C a a
so that they sl DoE up from
the bed elevation at the cross
portion, to a bankfull elevation
and meet the bank at a 20 deg.
angle. Header and footer rOCks
at both ends shall be tied in
SeCUrely t0 the bank to
e]iminate the do SS Ibility of
water diversion.
Roar WO offrAa
FOOTER LOG
FLOW y
BKF
WAT SURFACE
FOOTER LOG
?A A trench shall be dug along the toe of the bank to a depth of
the tlf ameter of the footer log. A pruned foster log shall be
placed at the toe of the cnanne7 and the root Matl shall be
0lace" tlirec Cly above it. The ve l oc Ity vectors of the streem
of the cnennel are aligned with the trunks longitudinal axis
antl will intersect the root mass at a 90 degree angle. A
1-1der may be Placed on the d.-stream side. on top of.
and on the upstream side between the rootmass and
the bank to brovlde erosion Control.
J-HOOK DETAIL
3-7% SLOPE
MATER SURFACE
20-30 DEGREES
FLOW
F007ER ROCK
PROFILE VIEW
6KF
PLAN VIEW EATER SURFACE
FOOTER ROCKS
CROSS-SECTION VIEW
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EInvi I ninwtta1 Consulting Services Inc.
February 12, 2003
Ms Cyndi Karoly
NC DENR DWQ
2321 Crabtree Blvd.
Parkview Building
Raleigh, NC 27604-2260
RE: Laurel Creek Restoration
Dear Cyndi:
3764 Rominger Road
Banner Elk, NC 28604
Ph/Fax: 828-297-6946
0 3 0 le-g,lfc_iv@skybest.com
With this letter I'm sending you three sets of plans and permit documents for the referenced project.
This is a grant funded restoration project that qualifies for NWP 27 and WQC #3353 to the best of my
understanding. Please evaluate and let me know if you agree or if you need any additional information.
Thank You.
Sincerely,
Z??
Jo n C. Vilas
President, E'nV Environmental Consulting Services Inc.
, Z**3
t R
s ? a f /;
NWP 27
PERMIT APPLICATION
Laurel Creek Restoration
January 23, 2003
Applicant:
Blue Ridge RC&D, Inc.
1081-2 Old US Hwy. 421
Sugar Grove, NC 28679
Agent:
"WV
ErrAwnrnental ComuWmg Services Inc.
3764Rominger Rd.
Banner Elk, NC 28604
FEB 1 3 7.003
a
LIWA-fEn "unl;iY 3ECfljr?
E'nV
Erwh+onme d Cons "SP•11/iC@S Inc.
January 27, 2003
Mr. Tim Smith
USACE
Asheville Regulatory Field Office
151 Paton Ave, Rm 208
Asheville, NC 28801-5006
RE: Laurel Creek Restoration Project
Dear Tim:
3764 Romnpr Road
Banner Elk, NC 28604
Ph/Fax. 828-297-6946
e-mail: wccJv@skybesLcom
Enclosed is an application for NWP 27 for the referenced project. We are also sending this package to
Ron Linville with NCWRC and will soon be sending three sets of plans to NC DWQ.
If you have any questions regarding this information please call me at 828-297-6946, thank you.
Sincerely,
hn C. Vilas
President, E'nV Environmental Consulting Services Inc.
Cc: Mr. Stan Steury, Blue Ridge RC&D
Mr. Ron Linville, NC WRC
Upper Laurel Creek Project
Application
Laurel Creek Design and
3 Existing Conditions
Worley Creek Design and
Existing Conditions
1
Office Use Only: Form Version April 2001
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Check all of the approval(s) requested for this project:
X Section 404 Permit
? Section 10 Permit
? 401 Water Quality Certification
? Riparian or Watershed Buffer Rules
2. Nationwide, Regional or General Permit Number(s) Requested: NWP 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: X per WQC #3353
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
H. Applicant Information
1. Owner/Applicant Information
Name: Blue Ridge RC&D Inc.
Mailing Address: 1081-2 Old US Hwy. 421
Sugar Grove, NC 28679
Telephone Number: 828-297-5805 Fax Number: 828-297-5928
E-mail Address: bluerid eg rcd(a skYbest.com
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: John C. Vilas
Company Affiliation: E'nV Environmental Consulting Services Inc.
Mailing Address: 3764 Rominger Road
Banner Elk NC 28604
Telephone Number: 828-297-6946 Fax Number: 828-297-6946
E-mail Address: wcc jv@Akybest.com
Page 3 of 12
M. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Laurel Creek Restoration
2. T.I.P. Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 1961-51-4080-000
4. Location
County: Watauga Nearest Town: Banner Elk
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): From Banner Elk take Hwy 194
North approx. 4 miles turn left on Rominger Road go approx 1.5 miles bear right on dirt road
(&3jng_on Rominger) Go approx. 2.5 miles. Site is adjacent to hav field behind 3 barns and
near mail box # 3764.
5. Site coordinates, if available (UTM or Lat/Long): 36 deg 13'23" N, 81 deg, 50' 5" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this
application:Agricultural, hay field and pasture
7. Property size (acres): 196 acres
8. Nearest body of water (stream/river/sound/ocean/lake): Laurel Creek
9. River Basin: Watauga
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
Page 4 of 12
Describe the purpose of the proposed work: To restore approximately 1400 linear feet of Laurel
Creek and approximately _650 linear feet of Worley Creek immediately above the confluence
with Laurel Creek (see project narrative)
10. List the type of equipment to be used to construct the project: Standard construction
equipment: track excavator, backhoe dump truck loader
11. Describe the land use in the vicinity of this project: Rural residential, agricultural and
undeveloped. Very low density.
IV. Prior Project History
if jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
A USACE 404 permit and a NCDENR 401 permit was obtained previously for the Worley Creek
Restoration Project in 1999, the previous project is upstream of the currently proposed work on
Worley Creek Previous permit #'s• NC WOC Project # 980342 (issued 5-19-98), USACE 404
# 199830459 (issued 3-15-99) The previous project restored approximately 1600 linear feet of
F4/5 channel with a meandering E4/5 channel and created/restored/enhanced over 5 acres of
wetlands The previous project area is surrounded and protected by a 13 acre conservation
easement The proposed project will not impact the previous project in anyway.
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: No additional 404/401 permit requests are anticipated for this project.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
Page 5 of 12
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Wetland Impacts
Wetland Impact
Site Number
indicate on ma)
Type of Impact* Area of
Impact
(acres Located within
100-year Floodplain**
es/no) Distance to
Nearest Stream
linear feet
Type of Wetland***
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, till,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http:/h.,?tN.fema.eox.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of existing wetlands on the property: approx 10 acres
Total area of wetland impact proposed: 0.0
2. Stream Impacts, including all intermittent and perennial streams
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please seci
Laurel Creek Fill/ bank
grading/flooding 1420 Laurel Creek 35 feet Perennial
Worley Creek Bank
grading/Fill 490 Worley Creek 18 feet Perennial
Page 6 of 12
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
,oww.usgs.sov. Several internet sites also allow direct download and printing of USGS maps (e.g., NAiv%N.topozone.coin,
wAi'%v.mavauest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 1910' Perennial,
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
indicate on ma)
Type of Impact* Area of
Impact
acres Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.
* List each impact separately and identify temporary impacts. Impacts include, nut are not imutea to: nii, excavation, dredging,
flooding, drainage, bulkheads, etc.
4. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): X uplands X stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): An off-line pond is to be constructed in an excessively
wide and deep portion of existing channel and adjacent upland areas. The pond will serve to
generate fill material needed on the project while reducing fill requirements. The pond will
be fed .y a piped diversion from upstream.
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Balance cut and fill on the project, aesthetics, recreation.
and habitat enhancement.
Size of watershed draining to pond: approx 2 acres. Expected pond surface area: 0.3 acres
Page 7 of 12
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The proposed work and associated impacts are proposed to restore and stabilize previously
altered channel areas that are currently unstable and eroding The primary nuraose of this project
is to provide an overall improvement to water quality. The methods proposed (root wads, sod
mats willow transplants and rock vanes) are designed to provide the desired stability as well as
enhance instream habitat.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state,nc.us/ncwetlands/strm.gide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
Page 8 of 12
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
A permanent conservation easement with average width of 30 feet either side of the stream is
proposed over most of the project. Easement width will be reduced in the vicinity of the
existing structures
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/UTD/index.htm. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0
Amount of buffer mitigation requested (square feet): 0
Amount of Riparian wetland mitigation requested (acres): 0
Amount of Non-riparian wetland mitigation requested (acres): 0
Amount of Coastal wetland mitigation requested (acres): 0
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
land?
Yes X No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at (919) 733-5083 to review current thresholds for environmental documentation.
Yes ? No X
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Page 9 of 12
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No X If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 3
2 1.5
Total
• Lone 1 exten0s out Su feet perpenoieuiar worn near oanK of cnannei; "no Z. uxtenub an
additional 20 feet from the edge of Zone 1.
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
NA
XH. Sewage Disposal (DWQ Only)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
NA
X1H. Violations (DWQ Only)
Page 10 of 12
Is this site in violation of DWQ Wetland Rules (I 5A NCAC 2H .0500) or any Buffer Rules?
Yes ? No X
Is this an after-the-fact permit application?
Yes ? No X
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
-,23-0
Applicant/Ag is Signature To- kh e• U1Date
(Agent's sig tune is valid only if an authorization letter from the applicant is provided.)
US Army Corps Of Engineers Field Offices and County Coverage
Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell
US Army Corps of Engineers Avery Clay Jackson Polk
151 Patton Avenue Buncombe Cleveland Lincoln Rowan
Room 208 Burke Gaston Macon Rutherford
Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley
Telephone: (828) 271-4854 Caldwell Haywood McDowell Swain
Fax: (828) 271-4858 Catawba Henderson Mecklenburg Transylvania
Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham
US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes
6508 Falls of the Neuse Road Ashe Franklin Nash Surry
Suite 120 Caswell Forsyth Northampton Vance
Raleigh, NC 27615 Chatham Granville Orange Wake
Telephone: (919) 876-8441 Davidson Guilford Person Warren
Fax: (919) 876-5283 Davie Halifax Randolph Wilkes
Washington Regulatory Field Office Beaufort Currituck Jones
US Army Corps Of Engineers Bertie Dare Lenoir
Post Office Box 1000 Camden Gates Martin
Washington, NC 27889-1000 Carteret* Green Pamlico
Telephone: (252) 975-1616 Chowan Hertford Pasquotank
Fax: (252) 975-1399 Craven Hyde Perquimans
Pitt
Tyrrell
Washington
Wayne
Union
Watauga
Yancey
Wilson
Yadkin
*Croatan National Forest Only
Page 11 of 12
Blue Ridge
Resource Conservgaen & Development
Council, Inc.
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swn SWY &W C"Cw. U" wbeen= t?so bAM.oa - eiar wrtwo? +?. ?..?ww
January 22, 2003
NC DENR
Division of Water Quality
MSC-1921
Raleigh, NC 27699
To Whom It May Concern:
Buck Engineering of Cary, North Carolina is authorized to be our agent in the Laurel and
Worley Creels restoration project to be completed in Spring of 2003.
If you have questions, please give me a call at 828-297-5805 or email me a
sstew-yaboone.net.
Sincerely,
A,-.,
Stan SteuryACoordinato
Blue Ridge RC&D Council, Inc.
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Name: VALLE CRUCIS Location: 036° 13'22.7" N 081° 49'56.8" W
Date: 1/6/2003 Caption: Laurel/Worley Creek Project Area
Sale: 1 inch equals 1000 feet
Copyright (C) 1997, Maptech, Inc
2
Project: UPPER LAUREL CREEK RESTORATION
Location: Watauga, NC
PROJECT NARRATIVE
General:
The Upper Laurel Creek Restoration Project will restore approximately 2000 linear feet
of mountain trout stream in northwestern Watauga County, NC (see location map). The
project involves work on two streams, Laurel Creek (approx. 1500 linear feet) and
Worley Creek (approx.500 feet). Worley Creek, at the project site, has a drainage area
of approximately 1.35 sq. mi. and contains a healthy population of native Brook Trout.
Another reach of Worley Creek approximately 2000 feet upstream of the current project
reach was restored in 1999. Laurel Creek at the project site has a drainage area of 2.2 sq.
mi. Laurel Creek is also a trout stream but contains primarily stocked populations of
Brown and Rainbow Trout. This project was identified as a high priority restoration site
in the July 2000 Watauga River Basin Riparian Corridor Conservation Plan funded
through NC CWMTF grant and prepared for the Blue Ridge Rural Land Trust.
The current project is funded through a CWMTF grant to Blue Ridge RC&D. The
contract for this project was awarded to Buck Engineering of Cary, NC and E'nV
Environmental Consulting Services Inc. of Banner Elk, NC.
The design objectives of the Upper Laurel Creek Restoration Project are to correct severe
stream bank erosion and channel migration problems. Also to provide an accessible
floodplain, create/enhance riparian wetlands, and stabilize and enhance aquatic habitat to
these designated troutwater streams. The existing channel is a F4b in the upper part and a
B4 with major problems in the lower section. The proposed channel is a stable B4. The
Worley Creek portion of this project will involve regrading and stabilizing of
streambanks to obtain a bankheight ratio of 1.0 and correct bank erosion problems. Some
pattern adjustment will also be incorporated to establish stable meander bends and higher
quality buffer in the vicinity of existing structures.
Upper Laurel Creek:
The upper end of the project reach lies in open mixed hardwood forest, terraces with a
thick Rhododendron subcanopy and hardwood canopy flank the valley floor. The lower
end of the project reach is bordered by a pasture/hayfield to the east (river right) and a
large rocky floodplain with numerous wetland pockets to the west. In addition to the
wetland pockets located in the large floodplain area, there are two additional small
pockets (approximately 900 sq. ft.) along the western edge of the valley near the upper
end of the project reach (see site plan).
This section of Laurel Creek has a history of alteration. Although the specific nature of
the alterations has not been confirmed, there is abundant evidence of past activities. The
most significant feature is a large berm 8-10 feet high and 400 feet long that confines a
long straightened run through the middle portion of the project reach. The upper section
contains areas that appear to have been graded down two feet as well as numerous
mounds of earth. The lower section also contains numerous mounds of earth. All of these
mounds have been in place for at least 50 years as evidenced by the size on trees growing
out and interviews with long time residents. It is suspected that most of the berms and
mounds are related to past sand and gravel mining operations. A large section of
abandoned channel exists along the western edge of the valley that likely was Laurel
Creek at one time. The reach immediately above the project reach is a stable B4. Farther
upstream is mostly AM with short sections of 133/4 and Aa+. Below the project reach
the valley broadens with a flatter slope; stream types are mostly C and F. There is an
existing ford at approximate station 8+00 that will be replaced in the new channel at an
appropriate location.
Lower Worley Creek:
The Lower Worley Creek project reach extends from the confluence with Laurel Creek
500 feet upstream. The upper portion of the Worley Creek reach is bordered by a hay
field on the left and mowed grass area with barns and a garden on the right. A long
established ford exists in the middle of this reach and will be reconstructed at an
appropriate location on the restored reach. The lower portion flows through a forested
area with large earth berms and mounds left from past activity. These berms appear to
have caused problems in this area by limiting floodplain functionality and confining the
channel laterally.
Existing Condition:
Upper Laurel Creek:
The upper portion of the project reach (station 0+00 - station 3+90) is predominantly F4b
and contains severely eroding stream banks. Vertical and undercut banks 5 to 10 feet high
are common, split flow and excessive over widening are also widespread. In one area
several large trees have fallen into the channel due to severe bank erosion. This section of
the existing channel transitions from severely incised to fully entrenched.
From approximately station 3+90 to 7+00 the channel is straight and confined between a
steep eroding bank (right) at the edge of a pasture and a large berm 8-10 feet high (left).
The lower portion of the project reach is mostly B4 with a variety of problems. The left
berm ends (near station 7+20) the bank becomes relatively flat and sandy. The
streambed splits again near station 7+40 and does not converge until approx. station
9+50. The left bank through this section is eroding and unstable. After converging,
Laurel Creek straightens through approx. station 13+00. The right bank height increases
through this area becoming steep and eroded in places; the accessible flood plain is
located on river left. Channel bedform and pattern also are in need of adjustment in this
area. From station 13+30 where Laurel Creek takes a sharp left turn through the end of
the project reach, Laurel and Worley Creeks are merely separated by a 20 foot-wide
bankfull bench, this bench has been frequently overtopped and is gradually being eroded
away. If no action is taken in this area the confluence of Laurel and Worley Creeks will
soon be shifted upstream approximately 100 feet
Sinuosity in the existing channel is low (1.04) due largely to past channelization and the
presence of the large berm through the middle of the reach.
Lower Worley Creek:
Upstream of the proposed restoration, Worley Creek is a stable E5 through an area with a
broad accessible floodplain and wetlands. Problems with incision begin just above the
beginning of the project. The bank height ratio in the upper part of the project reach is
1.3 to 1.4. Existing stream type in this area is an incised E4. Elderberry, willow and
blackberry stands populate the riparian zone through the pasture area (Station 0+00 -
Station 2+00). The left bank height increases between station 1+00 and 2+00, becoming
severely eroded through this area. The lower section, from station 2+00, continuing
through its confluence with Laurel Creek (station 5+00), Worley Creek is a C4 stream
type. Throughout this portion of the project reach the bank height ratio is 1.4 to 1.6. In
addition, large berms that confine the channel have resulted in several areas of bank
erosion and a limited sinuosity.
Project description:
Upper Laurel Creek:
Laurel Creek will be restored as a priority 1-2 project, a proposed B4 channel of
approximately 1500 linear feet will be constructed to replace the existing channel. The
upper 800 +/- feet is a priority 1 design and the lower 700 +\- is a priority 2 design. The
design is based on reference reach data collected from two reaches of Laurel Creek, one
above the project reach and one below (see Reference Parameter Spreadsheet). Each
reference reach used in the Laurel Creek design was chosen due to similarities in
hydrophysiographic regioning, drainage areas, stream type and other desired
characteristics. Reference reaches listed in the Reference Parameter Spreadsheet as well
as others in the Watauga River Basin, including the Watauga and Elk River gages, were
incorporated into mini-regional curves used to calibrate design parameters.
Proposed channel dimension and profile parameters were set to ensure channel
competency based on entrainment calculations. Channel pattern parameters were
designed in accordance with regional dimensionless ratios and site constraints.
Several significant site features and practical constraints influenced the proposed design.
Due to high debris potential of the project reach it was considered essential to design
broad, functional and very accessible floodplain, as well as to provide a channel with
sufficient energy to move the largest available particles. The priority one restoration is
proposed in the upper part of the project where the existing channel is most severely
incised, this was found to be a more cost effective approach than constructing a
floodplain for the existing channel through grading. This also allows this portion of the
project to be constructed in the dry. The existing large berm will be removed by using it
as fill for the existing (to be abandoned) channel.
There is a substantial bedrock vane that extends into the area of the proposed channel in
the middle of the reach. This bedrock is exposed in a section of abandoned channel
(possibly old Laurel Creek). To decrease the likelihood of grade problems due to
excessive bedrock, the proposed channel was routed into a section of the old abandoned
channel through this area (proposed stations 5+25 to 7+50). The need to balance cut and
fill locally was a significant budget issue and was resolved by incorporating a pond in the
widest and deepest portion of the existing channel. This area of abandoned channel would
have required approximately 2600 cubic yards to fill. At the lower end of the project
reach Laurel Creek will be rerouted to allow for greater separation from Worley Creek.
The berms and mounds in this area will be removed or pulled back away from the
proposed channel.
Existing wetlands located in the project area will be enhanced due to their location on the
proposed active floodplain and riparian fringe. Existing wetlands will generally be
enlarged and several areas of new created wetlands will be established.
Channel stability will be achieved through a combination of techniques and measures. All
areas of restored channel will be constructed with a design bank-height ratio of 1.0.
Channel slope will be controlled with rock cross-vane structures at the head of all riffle
sections. Channel bends will be stabilized with a combination of root wads, rock vanes
and J-hook vanes. Channel banks will generally be graded with low angle banks and
seeded. Where sod is accessible (lower part of reach) it will be used extensively to line
graded banks. Where needed erosion control matting will be installed
Lower Worley Creek:
Beginning at upper end of the project (station 0+00) and extending through the incised
area (station 2+00) the restoration objective is to decrease the bank height ratio allowing
the stream to access its floodplain. This shall be achieved by raising the bed elevation,
with grade control structures, and creating a bankfull bench that extends an average of 10
feet on either side of the stream. The bankfull bench will be constructed to encourage
wetland creation throughout the upper part of the Worley Creek reach. This work will
result in a change in stream type from a incised E4 to a stable C4. Extending from station
2+00 through the end of the project the priority 2 restoration utilizes the existing mixed
hardwood riparian zone. The principal objective in the lower part of the reach is to create
a functional, accessible floodplain by restoring a bank-height ratio of 1.0, removing
berms and mounds, and adjusting pattern. The permanent ford will reconstructed in the
vicinity of proposed station 1+00.
Channel stability will be achieved through a combination of techniques and measures. All
areas of restored channel will be constructed with a design bank-height ratio of 1.0.
Channel slope will be controlled with rock cross-vane structures at the head of all riffle
sections. Channel bends will be stabilized with a combination of root wads and rock
vanes. Sod mats and Willow transplants will be used to line graded stream banks.
Planting Plan:
The riparian zone and buffer areas will be revegetated with a combination of trees, shrubs
and herbaceous plants. All disturbed areas will be seeded with temporary cover (rye or
millet depending on time of year) immediately following completion of work in those
areas. Permanent cover will be established at the end of the project. Trees and shrubs will
be planted throughout the riparian zone (except shrubs-only in powerline easements) at a
density sufficient to achieve a forested condition, approximately 400 stems per acre.
Species to be planted include: River Birch, Green Ash, Red Maple, Red Oak, Poplar,
Black Willow, Sycamore, shrub Willow, shrub Dogwood, and Alder.
Buffer:
A permanently protected buffer area will be established around the restored areas of both
Laurel and Worley Creeks. The buffer width will be an average of 30 feet from the top of
bank on each side of the proposed restored channels. The buffer width will be reduced
somewhat in the vicinity of the existing structures and garden along Worley Creek. The
buffer area will be placed into a permanent conservation easement to be donated to a
local land trust. Two permanent fords currently exist within the project area, one over
each creek; these will both be replaced. The landowner also retains the right to construct
a bridge across each of the streams in order to allow vehicular access to large sections of
the property that would otherwise be restricted from public road access by proposed and
existing easements. Such crossing locations are not planned nor have any locations been
identified. Any future crossings will involve spanning structures and will be planned in
accordance with all regulations applicable at the time such development is proposed.
Monitoring Plan:
An as-built survey of the restored channels will be conducted following construction and
after one or two flushing flows. Additional monitoring activities are to be conducted by
others.
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Reference Parameter Spreadsheet
Laurel Creek above Laurel Creek near Existing Condition Proposed Laurel Creek
Reach Name project River Laurel Creek Proj.
Stream Type 84 B4 Fob B4
Drainage Area 2 sq mi 7.1 sq mi 2.2 sq mi 2.2 sq mi
Bankfull Width mean: 25.3 ft
range: 23-29.5 It
47 ft
43 ft
26.5 ft
mean: 1.6 It range:
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1.002 ft
1.6 ft
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mean: 40." It
range: 38.7-43.4 sq
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mean Velocity 6.1 ft/s 6.2
bkf Q 250 cfs 265 cfs 265 cfs
max depth bkf mean: 2.4 ft
range: 2.1-2.74 ft
2.62 It
2.1 ft
2.75 It
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bank height ratio 1.3 1 .
Width fpa 55.5 ft 180 ft 5C ft 75+ ft
Entrenchment Ratio 2.4 3.8 1.16 3+
215 it 160 ft (155-230)
Meander Length 74 ft 70 It (55-75)
Belt Width 104 ft 60 It (55-75)
Radius of Curvature
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mean: 0.0069 mea6:.0039
Pool Slope range:.001-.013 range: 0-.011 1.14 0.0047
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0.052
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Run Slope
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Srun/Savg
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Channel Materials
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D84 190 135
D95 400 205
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Name: VALLE CRUCIS Location: 036° 12' 36.1 N 081° 50' 08.5" W
Date: 9/3/2002 Lctut•el Creek Pt-oje,-f keacL. Ww?atsl.e?(
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(station 1+20: end) (station 0:-1+20)
Reach Name Existing Channel Existing Channel Basin Creek Worley Ck (upper) Proposed Channel
Stream Type C4 E4 C4 C4 C4
Drainage Area 1.3 sq mi 1.3 sq mi 8 sq mi 0.96 sq mi 1.3 sq mi
Bankfull Width 15 ft loft 30.7 ft 15 ft 16-18 ft
Bkf mean depth 1.2 ft 1.6 1.9 ft 1.2 ft 1.22
W/D 12.5 6.25 ,, 12.8 «...14.7
Area, bkf 18.1 sq ft 16 sq ft 57.4 sq ft 17.6 sq ft 22 sq ft
mean Velocity 4.8 ft/sec 4.9 ft/sec 5.4 ft/sec
bkf Q -120 cfs -120 cfs -120 cfs
max depth bkf 1.7 2.35 ft 2.5 ft 1.7 ft 2.0 ft
d-max/d-bkf 1.4 1.47 .7 1.4 176
bank height ratio 1.6 1.4 1 1 1
Width fpa 23 ft. 120 +/- ft 85 ft 50 ft 75 + ft
Entrenchment Ratio 1.5 12 ,. 2.8 3.3 +
Meander Length 98 ft 98 ft seew , 135 ft t?Wft
Belt Width 52 ft 40 ft 105 ft 71 ft 60 ft
Radius of Curvature 20 ft 20 ft 77-134 ft 20.70 28 ft
Lm/Wbkf 6.5 9.8 ++1:4 9 a6.3
Rc/Wbkf 1.33 2 .4 1.38 01.8
Wblt/Wbkf 3.5 4 3.4 4.7 3.2
Sinuosity 1.3 1.26 62 1.5 w42-
Valley Slope 0.0116 0.0174 .014 0.025 0.016
Avg. Slope 0.0144 0.0138 W14 0.017 01012
Pool Slope 0.0037 0.0026 0.005 0.0035 0.0024
Riffle Slope 0.026 0.031 0.051 0.041 0.0255
Glide Slope
Run Slope
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Sr/Savg 1.8 2.25 3.61 2.46 2.04
Sg/Savg
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Width-pool 18 ft loft 40.6 ft 15 ft 24
W-p/W-bkf 1.2 1 1.3 1 1.3
Area-pool 28 sq ft 19.2 sq ft 64.4 sq ft 26.8 sq ft 28.6
A-p/A-bkf 1.5 1.2 1.1 1.5 1.3
P-P spacing 38-80 ft 38-80 ft 224 ft 125 ft 90 ft
P-P spacing/Wbkf 2.5-5.3 2.1-4.4 8.3
Channel Materials
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D35 4mm 4mm 20mm 8mm 4mm
D50 9mm 9mm 38mm 45mm 9mm
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T Name: VALLE CRUCIS Location: 036° 12'58.8" N 081° 49'47. 1" W
Date: 9/3/2002
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TYPICAL BEDFORN/BRADINS SEM ENCE
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III = III _ PRCAOSEO BEG ELEV<IIGN
III=III= III 111
111
GEGTEYTiLE FABRI
FOOTER ROGx
*WAU ATI*
A trench shall be dug in a
manner that the footer rocks.
cross header rocks and a
MIN of 1/3 of the wing
header rocks are buried
beneatn the bed surface
elevation. Rocks are
precisely placed with a
hydraulic thumb. Footer
rocks shall be placed first
with nea0er rocks 038cso
on top prior to backf filling
the trench. In the center
(cross) portion the header
rack5 sha 11 be p]ac ed so
that the top of the header
rock is an elevation aaual
t0 the proposed bed
elevation. Geotextile fabric
shall be placed in the
trench with a00r Ox. 2 ft.
of overlap. ROCk fill mater-
ial shall be back fille0
ar Dund the fabric. The
header rocks on the wing
portion snal7 be placed
so tnat they slope up from
the bed elevation at the cross
portion, to a bankfu1] elevation
and meet the bank at a 20 deg.
angle. Header and footer rocks
at DOth ends sha7] be tied in
securely to the bank to
eliminate the 00Ssibility of
water diversion.
marr Wo oErAzL
FOOTER LOG
FLOW
L
BKF
W T SURFACE
FOOTER LOG
PWTER AM A trench Shall be dug along the toe of the bank to a depth of
the diameter of the footer log. A pruned footer log Shall be
Dlac etl at the toe of the cnanneI and the r00i watl sha]7 be
p18CPtl tl]rPCt1y above it. The velocity vecto s of the Stream
of the channel are aligned wi to the trunks longitudinal axis
and wi 11 intersect the rd 0t mass at a 90 degree angle. A
boulder may be placed on the downstream Side. on toR Of.
and On the Upstream side between the r00tmass and
the bank to provide Pr09 ion Control.
J-HOOK DETAIL
3-7% SLOPE
20-30 DEGREES
FLOW
PLAN VIEW EATER SURFACE
BKF -77
FOOTER ROCKS
CROSS-SECTION VIEW
PROFILE VIEW
UPPER LAUREL CREEK PROPOSED
E' nv Environmental Consulting Services Inc.
3764 Rominger Rd.
Banner Elk, NC 26604
ph/fax - (826) 297-5946
*TEMPORARY MIX:
( ITHIN 16 DAYS OF COMPLETION OF LAND DISTURBING
ACTINITY IN ALL DISTURBED AREAS)
-BROWN TOP MILLET (FARM SEASON)
-WINTER RYE (COOL S ASON)
*P RMANENTBE D MIX:
(SPFIACD IIFAN ELODISTURBED FLOODPLAIN AREAS)
*PASTURE MIX: RBED IOTHN ALL DI
ORCHARDTGRASS ANDTRED CLLOVER
15' BUFFER
30' BUFFER
Rominger Rd.
VEGETATION PLAN
PR POSED P ND
Laurel Creek Rd.
Him emewom Pnw{ RAW
® B' 8FiM18 AND BEER BUFFER BILK) F
® !a' BMW AND SEED BUFFER BA8 ALdERLL
BUM
30' EXISTING, UNDI8TUR9ED BUFFER N/A
®
POPLAR. PI BIN
30' TREE AND SEED BUFFER
[a. ±FE"Fl JB G EXISTING UNDISURBED 8I y?M LL
TAG Y M
CHANNEL STABILIZATION
TYPICAL CHANNEL CROSS-SECTION
030164
NWP 27
PERMIT APPLICATION
Laurel Creek Restoration
January 23, 2003
Applicant:
Blue Ridge RC&D, Inc.
1081-2 Old US Hwy. 421
Sugar Grove, NC 28679
0
Up *--? _V L? LJ w S
x S m? i f
FEB 13 2003
b''LR"d05 S0EC'TPt0N
Agent: n...
E'nV
Ern mnmefal Consulting Services Inc.
3764Rominger Rd.
Banner Elk, NC 28604
L-J
EW
rnvvb 111ne11 ?:OhSU S? ?1IiC.
January 27, 2003
Mr. Tim Smith
USACE
Asheville Regulatory Field Office
151 Paton Ave, Rm 208
Asheville, NC 28801-5006
RE: Laurel Creek Restoration Project
Dear Tim:
3764 Rominger Road
Banner Elk, NC 28604
Ph/Fa)r 828-297-6946
e-mail: wccJvQskybest.com
Enclosed is an application for NWP 27 for the referenced project. We are also sending this package to
Ron Linville with NCWRC and will soon be sending three sets of plans to NC DWQ.
If you have any questions regarding this information please call me at 828-297-6946, thank you.
Sincerely,
hn C. Vlas
President, EW Environmental Consulting Services Inc.
Cc. Mr. Stan Steury, Blue Ridge RC&D
Mr. Ron Linville, NC WRC
A
Upper Laurel Creek Project
Application
Laurel Creek Design and
3 Existing Conditions
Worley Creek Design and
Existing Conditions
1
Office Use Only: Form Version April 2001
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
I. Processing
1. Check all of the approval(s) requested for this project:
X Section 404 Permit
? Section 10 Permit
? 401 Water Quality Certification
? Riparian or Watershed Buffer Rules
2. Nationwide, Regional or General Permit Number(s) Requested: NWP 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: X per WQC #3353
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
H. Applicant Information
1. Owner/Applicant Information
Name: Blue Ridge RC&D Inc.
Mailing Address: 1081-2 Old US Hwy. 421
Sugar Grove, NC 28679
Telephone Number: 828-297-5805 Fax Number: 828-297-5928
E-mail Address: bluerid eg rcd&skybest.com
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: John C. Vilas
Company Affiliation: E'nV Environmental Consulting Services Inc.
Mailing Address: 3764 Rominger Road
Banner Elk NC 28604
Telephone Number: 828-297-6946 Fax Number: 828-297-6946
E-mail Address: wcc, jv@§kybest.com
Page 3 of 12
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers fall-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Laurel Creek Restoration
2. T.I.P. Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 1961-51-4080-000
4. Location
County: Watauga Nearest Town: Banner Elk
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): From Banner Elk take Hwy 194
North approx. 4 miles turn left on Rominaer Road go approx 1.5 miles bear right on dirt road
(staying on Rominger) Go approx. 2.5 miles. Site is adjacent to hay field behind 3 barns and
near mail box # 3764.
5. Site coordinates, if available (UTM or Lat/Long): 36 deg 13'23" N, 81 deg 50' 5" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this
application:Agricultural, hav field and pasture
7. Property size (acres): 196 acres
8. Nearest body of water (stream/river/sound/ocean/lake): Laurel Creek
9. River Basin: Watauga
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
Page 4 of 12
Describe the purpose of the proposed work: To restore approximately 1400 linear feet of Laurel
Creek and approximately 650 linear feet of Worley Creek immediately above the confluence
with Laurel Creek (see project narrative)
10. List the type of equipment to be used to construct the project: Standard construction
equipment: track excavator, backhoe dump truck loader
11. Describe the land use in the vicinity of this project: Rural residential, agricultural and
undeveloped. VM low density.
IV. Prior Project History
if jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
A USACE 404 permit and a NCDENR 401 permit was obtained previously for the Worley Creek
Restoration Project in 1999, the previous project is upstream of the currently proposed work on
Worley Creek Previous permit #'s• NC WOC Project # 980342 (issued 5-19-98), USACE 404
# 199830459 (issued 3-15-99). The previous project restored approximately 1600 linear feet of
174/5 channel with a meandering E4/5 channel and created/restored/enhanced over 5 acres of
wetlands The previous project area is surrounded and protected by a 13 acre conservation
easement The proposed project will not impact the previous project in any way.
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: No additional 404/401 permit requests are anticipated for this project.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
Page 5 of 12
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Wetland Impacts
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
(acres Located within
100-year Floodplain**
es/no Distance to
Nearest Stream
linear feet
Type of Wetland***
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://NAANA?.fema.go\-.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of existing wetlands on the property: approx 10 acres
Total area of wetland impact proposed: 0.0
2. Stream Impacts, including all intermittent and perennial streams
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please seci
Laurel Creek Fill/ bank
adin /flooding 1420 Laurel Creek 35 feet Perennial
Worley Creek Bank
radin ill 490 Worley Creek 18 feet Perennial
Page 6 of 12
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching(straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
,
www.usgs.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com
wivw.mapquest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 1910' Perennial,
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
acres Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ean, etc.
* List each impact separately and identify temporary impacts. impacts mciuoe, but are not mmitea to: nn, excavanon, urcuging,
flooding, drainage, bulkheads, etc.
4. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): X uplands X stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): An off-line pond is to be constructed in an excessively
wide and deep portion of existing channel and adjacent upland areas. The pond will serve to
generate fill material needed on the project while reducing fill requirements. The pond will
be fed by a piped diversion from upstream
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Balance cut and fill on the project, aesthetics, recreation,
and habitat enhancement.
Size of watershed draining to pond: approx 2 acres. Expected pond surface area: 0.3 acres
Page 7 of 12
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimised once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The proposed work and associated impacts are proposed to restore and stabilize previously
altered channel areas that are currently unstable and ero ft. The primary purpose of this proiect
is to provide an overall improvement to water duality. The methods proposed (root wads, sod
mats willow transplants and rock vanes) are designed to provide the desired stability as well as
enhance instream habitat.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial ,
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http:Hh2o.enr.state.nc.us/ncwetlands/strmizide.htmi.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
Page 8 of 12
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
A permanent conservation easement with average width of 30 feet either side of the stream is
proposed over most of the project Easement width will be reduced in the vicinity of the
existing, structures
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at httv://h2o.enr.state.nc.ush,.rp/index.htm. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0
Amount of buffer mitigation requested (square feet): 0
Amount of Riparian wetland mitigation requested (acres): 0
Amount of Non-riparian wetland mitigation requested (acres): 0
Amount of Coastal wetland mitigation requested (acres): 0
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
land?
Yes X No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at (919) 733-5083 to review current thresholds for environmental documentation.
Yes ? No X
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Page 9 of 12
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No X If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone's Impact
(square feet Multiplier Required
Mitigation
1 3
2 1.5
Total
Lone 1 extends out iU Teel perpenGICUlar n-om near Danz 01 UUMU 11- c,UuC c cawuub a,1
additional 20 feet from the edge of Zone 1.
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
Xl. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
NA
XII. Sewage Disposal (DWQ Only)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
NA
XIIL Violations (DWQ Only)
Page 10 of 12
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No X
Is this an after-the-fact permit application?
Yes ? No X
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
-?3-0
Applicant/Ag is Signature J o i n L U i l a S Date
(Agent's sig ture is valid only if an authorization letter from the applicant is provided.)
US Army Corps Of Engineers Field Offices and County Coverage
Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell
US Army Corps of Engineers Avery Clay Jackson Polk
151 Patton Avenue Buncombe Cleveland Lincoln Rowan
Room 208 Burke Gaston Macon Rutherford
Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley
Telephone: (828) 271-4854 Caldwell Haywood McDowell Swain
Fax: (828) 271-4858 Catawba Henderson Mecklenburg Transylvania
Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham
US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes
6508 Falls of the Neuse Road Ashe Franklin Nash Surry
Suite 120 Caswell Forsyth Northampton Vance
Raleigh, NC 27615 Chatham Granville Orange Wake
Telephone: (919) 876-8441 Davidson Guilford Person Warren
Fax: (919) 876-5283 Davie Halifax Randolph Wilkes
Washington Regulatory Field Office Beaufort Currituck Jones
US Army Corps Of Engineers Bertie Dare Lenoir
Post Office Box 1000 Camden Gates Martin
Washington, NC 27889-1000 Carteret* Green Pamlico
Telephone: (252) 975-1616 Chowan Hertford Pasquotank
Fax: (252) 975-1399 Craven Hyde Perquimans
Pitt
Tyrrell
Washington
Wayne
Union
Watauga
Yancey
Wilson
Yadkin
*Croatan National Forest Only
Page 11 of 12
Blue Ridge
Resource Conservation & Development
Council, Inc.
1061-2 Old
1hMww Grove,
.828-2.61105 F4x: ?d2s?9?77??2s
sMn aw?r ?e oweaK • Taw vfteml. Pao M%".o•r • e.eh w a As++- a.r?wr
January 22, 2003
NC DENR
Division of Water Quality
MSC-1921
Raleigh, NC 27699
To Whom It May Concern:
Buck Engineering of Cary, North Carolina is authorized to be our agent in the Lawel and
Worley Creek restoration project to be completed in Spring of 2003.
If you have questions, please give me a call at 828-297-5805 or email me a
ssteuboone.net.
Sincerely,
Stan SteuryACoordinato
Blue Ridge RC&D Council, Inc.
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Name: VALLE CRUCIS Location: 036° 13'22.7" N 081° 49' 56.8" W
Date: 1/6/2003 Caption: Laurel/Worley Creek Project Area
Scale: 1 inch equals 1000 feet
(C) 1997, Wptech, Inc.
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Project: UPPER LAUREL CREEK RESTORATION
Location: Watauga, NC
PROJECT NARRATIVE
General:
The Upper Laurel Creek Restoration Project will restore approximately 2000 linear feet
of mountain trout stream in northwestern Watauga County, NC (see location map). The
project involves work on two streams, Laurel Creek (approx. 1500 linear feet) and
Worley Creek (approx. 500 feet). Worley Creek, at the project site, has a drainage area
of approximately 1.35 sq. mi. and contains a healthy population of native Brook Trout.
Another reach of Worley Creek approximately 2000 feet upstream of the current project
reach was restored in 1999. Laurel Creek at the project site has a drainage area of 2.2 sq.
mi. Laurel Creek is also a trout stream but contains primarily stocked populations of
Brown and Rainbow Trout. This project was identified as a high priority restoration site
in the July 2000 Watauga River Basin Riparian Corridor Conservation Plan funded
through NC CWMTF grant and prepared for the Blue Ridge Rural Land Trust.
The current project is funded through a CWMTF grant to Blue Ridge RC&D. The
contract for this project was awarded to Buck Engineering of Cary, NC and E'nV
Environmental Consulting Services Inc. of Banner Elk, NC.
The design objectives of the Upper Laurel Creek Restoration Project are to correct severe
stream bank erosion and channel migration problems. Also to provide an accessible
floodplain, create/enhance riparian wetlands, and stabilize and enhance aquatic habitat to
these designated troutwater streams. The existing channel is a F4b in the upper part and a
B4 with major problems in the lower section. The proposed channel is a stable B4. The
Worley Creek portion of this project will involve regrading and stabilizing of
streambanks to obtain a bankheight ratio of 1.0 and correct bank erosion problems. Some
pattern adjustment will also be incorporated to establish stable meander bends and higher
quality buffer in the vicinity of existing structures.
Upper Laurel Creek:
The upper end of the project reach lies in open mixed hardwood forest, terraces with a
thick Rhododendron subcanopy and hardwood canopy flank the valley floor. The lower
end of the project reach is bordered by a pasture/hayfield to the east (river right) and a
large rocky floodplain with numerous wetland pockets to the west. In addition to the
wetland pockets located in the large floodplain area, there are two additional small
pockets (approximately 900 sq. t.) along the western edge of the valley near the upper
end of the project reach (see site plan).
This section of Laurel Creek has a history of alteration. Although the specific nature of
the alterations has not been confirmed, there is abundant evidence of past activities. The
most significant feature is a large berm 8-10 feet high and 400 feet long that confines a
long straightened run through the middle portion of the project reach. The upper section
contains areas that appear to have been graded down two feet as well as numerous
mounds of earth. The lower section also contains numerous mounds of earth. All of these
mounds have been in place for at least 50 years as evidenced by the size on trees growing
out and interviews with long time residents. It is suspected that most of the berms and
mounds are related to past sand and gravel mining operations. A large section of
abandoned channel exists along the western edge of the valley that likely was Laurel
Creek at one time. The reach immediately above the project reach is a stable B4. Farther
upstream is mostly AM with short sections of B3/4 and Aa+. Below the project reach
the valley broadens with a flatter slope; stream types are mostly C and F. There is an
existing ford at approximate station 8+00 that will be replaced in the new channel at an
appropriate location.
Lower Worley Creek:
The Lower Worley Creek project reach extends from the confluence with Laurel Creek
500 feet upstream. The upper portion of the Worley Creek reach is bordered by a hay
field on the left and mowed grass area with barns and a garden on the right. A long
established ford exists in the middle of this reach and will be reconstructed at an
appropriate location on the restored reach. The lower portion flows through a forested
area with large earth berms and mounds left from past activity. These berms appear to
have caused problems in this area by limiting floodplain functionality and confining the
channel laterally.
Existing Condition:
Upper Laurel Creek:
The upper portion of the project reach (station 0+00 - station 3+90) is predominantly F4b
and contains severely eroding stream banks. Vertical and undercut banks 5 to 10 feet high
are common, split flow and excessive over widening are also widespread. In one area
several large trees have fallen into the channel due to severe bank erosion. This section of
the existing channel transitions from severely incised to fully entrenched.
From approximately station 3+90 to 7+00 the channel is straight and confined between a
steep eroding bank (right) at the edge of a pasture and a large berm 8-10 feet high (left).
The lower portion of the project reach is mostly B4 with a variety of problems. The left
berm ends (near station 7+20) the bank becomes relatively flat and sandy. The
streambed splits again near station 7+40 and does not converge until approx. station
9+50. The left bank through this section is eroding and unstable. After converging,
Laurel Creek straightens through approx. station 13+00. The right bank height increases
through this area becoming steep and eroded in places; the accessible flood plain is
located on river left. Channel bedform and pattern also are in need of adjustment in this
area. From station 13+30 where Laurel Creek takes a sharp left turn through the end of
the project reach, Laurel and Worley Creeks are merely separated by a 20 foot-wide
bankfull bench, this bench has been frequently overtopped and is gradually being eroded
away. If no action is taken in this area the confluence of Laurel and Worley Creeks will
soon be shifted upstream approximately 100 feet
Sinuosity in the existing channel is low (1.04) due largely to past channelization and the
presence of the large berm through the middle of the reach.
Lower Worley Creek:
Upstream of the proposed restoration, Worley Creek is a stable E5 through an area with a
broad accessible floodplain and wetlands. Problems with incision begin just above the
beginning of the project. The bank height ratio in the upper part of the project reach is
1.3 to 1.4. Existing stream type in this area is an incised E4. Elderberry, willow and
blackberry stands populate the riparian zone through the pasture area (Station 0+00 -
Station 2+00). The left bank height increases between station 1+00 and 2+00, becoming
severely eroded through this area. The lower section, from station 2+00, continuing
through its confluence with Laurel Creek (station 5+00), Worley Creek is a C4 stream
type. Throughout this portion of the project reach the bank height ratio is 1.4 to 1.6. In
addition, large berms that confine the channel have resulted in several areas of bank
erosion and a limited sinuosity.
Project description:
Upper Laurel Creek:
Laurel Creek will be restored as a priority 1-2 project, a proposed B4 channel of
approximately 1500 linear feet will be constructed to replace the existing channel. The
upper 800 +/- feet is a priority 1 design and the lower 700 +\- is a priority 2 design. The
design is based on reference reach data collected from two reaches of Laurel Creek, one
above the project reach and one below (see Reference Parameter Spreadsheet). Each
reference reach used in the Laurel Creek design was chosen due to similarities in
hydrophysiographic regioning, drainage areas, stream type and other desired
characteristics. Reference reaches listed in the Reference Parameter Spreadsheet as well
as others in the Watauga River Basin, including the Watauga and Elk River gages, were
incorporated into mini-regional curves used to calibrate design parameters.
Proposed channel dimension and profile parameters were set to ensure channel
competency based on entrainment calculations. Channel pattern parameters were
designed in accordance with regional dimensionless ratios and site constraints.
Several significant site features and practical constraints influenced the proposed design.
Due to high debris potential of the project reach it was considered essential to design
broad, functional and very accessible floodplain, as well as to provide a channel with
sufficient energy to move the largest available particles. The priority one restoration is
proposed in the upper part of the project where the existing channel is most severely
incised, this was found to be a more cost effective approach than constructing a
floodplain for the existing channel through grading. This also allows this portion of the
project to be constructed in the dry. The existing large berm will be removed by using it
as fill for the existing (to be abandoned) channel.
There is a substantial bedrock vane that extends into the area of the proposed channel in
the middle of the reach. This bedrock is exposed in a section of abandoned channel
(possibly old Laurel Creek). To decrease the likelihood of grade problems due to
excessive bedrock, the proposed channel was routed into a section of the old abandoned
channel through this area (proposed stations 5+25 to 7+50). The need to balance cut and
fill locally was a significant budget issue and was resolved by incorporating a pond in the
widest and deepest portion of the existing channel. This area of abandoned channel would
have required approximately 2600 cubic yards to fill. At the lower end of the project
reach Laurel Creek will be rerouted to allow for greater separation from Worley Creek.
The berms and mounds in this area will be removed or pulled back away from the
proposed channel.
Existing wetlands located in the project area will be enhanced due to their location on the
proposed active floodplain and riparian fringe. Existing wetlands will generally be
enlarged and several areas of new created wetlands will be established.
Channel stability will be achieved through a combination of techniques and measures. All
areas of restored channel will be constructed with a design bank-height ratio of 1.0.
Channel slope will be controlled with rock cross-vane structures at the head of all riffle
sections. Channel bends will be stabilized with a combination of root wads, rock vanes
and J-hook vanes. Channel banks will generally be graded with low angle banks and
seeded. Where sod is accessible (lower part of reach) it will be used extensively to line
graded banks. Where needed erosion control matting will be installed
Lower Worley Creek:
Beginning at upper end of the project (station 0+00) and extending through the incised
area (station 2+00) the restoration objective is to decrease the bank height ratio allowing
the stream to access its floodplain. This shall be achieved by raising the bed elevation,
with grade control structures, and creating a bankfull bench that extends an average of 10
feet on either side of the stream. The bankfull bench will be constructed to encourage
wetland creation throughout the upper part of the Worley Creek reach. This work will
result in a change in stream type from a incised E4 to a stable C4. Extending from station
2+00 through the end of the project the priority 2 restoration utilizes the existing mixed
hardwood riparian zone. The principal objective in the lower part of the reach is to create
a functional, accessible floodplain by restoring a bank-height ratio of 1.0, removing
berms and mounds, and adjusting pattern. The permanent ford will reconstructed in the
vicinity of proposed station 1+00.
Channel stability will be achieved through a combination of techniques and measures. All
areas of restored channel will be constructed with a design bank-height ratio of 1.0.
Channel slope will be controlled with rock cross-vane structures at the head of all riffle
sections. Channel bends will be stabilized with a combination of root wads and rock
vanes. Sod mats and Willow transplants will be used to line graded stream banks.
Planting Plan:
The riparian zone and buffer areas will be revegetated with a combination of trees, shrubs
and herbaceous plants. All disturbed areas will be seeded with temporary cover (rye or
millet depending on time of year) immediately following completion of work in those
areas. Permanent cover will be established at the end of the project. Trees and shrubs will
be planted throughout the riparian zone (except shrubs-only in powerline easements) at a
density sufficient to achieve a forested condition, approximately 400 stems per acre.
Species to be planted include: River Birch, Green Ash, Red Maple, Red Oak, Poplar,
Black Willow, Sycamore, shrub Willow, shrub Dogwood, and Alder.
Buffer:
A permanently protected buffer area will be established around the restored areas of both
Laurel and Worley Creeks. The buffer width will be an average of 30 feet from the top of
bank on each side of the proposed restored channels. The buffer width will be reduced
somewhat in the vicinity of the existing structures and garden along Worley Creek. The
buffer area will be placed into a permanent conservation easement to be donated to a
local land trust. Two permanent fords currently exist within the project area, one over
each creek; these will both be replaced. The landowner also retains the right to construct
a bridge across each of the streams in order to allow vehicular access to large sections of
the property that would otherwise be restricted from public road access by proposed and
existing easements. Such crossing locations are not planned nor have any locations been
identified. Any future crossings will involve spanning structures and will be planned in
accordance with all regulations applicable at the time such development is proposed.
Monitoring Plan:
An as-built survey of the restored channels will be conducted following construction and
after one or two flushing flows. Additional monitoring activities are to be conducted by
others.
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Laurel Creek Design
Reference Parameter Spreadsheet
L aurel Creek above L aurel Creek near Existing Condition Proposed Laurel Creek
Reach Name project River Laurel Creek Proj.
Stream Type B4 134 F4b
Drainage Area 2 sq mi 7.1 sq mi 2.2 sq mi 2.2 sq mi
mean: 25.3 ft
Bankfull Width range: 23-29.5 It 47 ft 43 It 26.5 ft
Bkf mean depth mean: 1.6 ft range:
1.37-1.89 ft
1.62 ft
1.002 ft
1.6
W/D
15.8
29
42.9
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mean: 40.9 sq ft
r ange: 38.7-43.4 sq
ft
95 sq ft
75
43.075 sq It
42.5 sq ft
Area, bid .
mean Velocity 6.1 ft/s 6.2
bkf 0 250 cfs 265 cfs 265 cfs
mean: 2.4 It
max depth bkf range: 2.1-2.74 ft 2.62 ft 2.1 It 2.75 ft
d-max/d-bkf 1.5 1.62 1.62
bank height ratio 1.3 1 3.75 1
Width fpa 55.5 It 180 It 50 It 75+ ft
Entrenchment Ratio 2.4 3.8 1.16 3+
215 It 160 It (155-230)
Meander Length 74 ft 70 It (55-75)
BeR Width
104 It 60 It, (55-75)
Radius of Curvature
LmfW bkf 5 6
Re/Wbkf 2.43 2.3
1 12 2.6
vvoruvvoa
Sinuosity
1.22
1.25
Valley Slope
Avg. Slope
0.039
0.0228 0.03
0.0275 0.03
0.025
Pool Slope mean: 0.0069
range:.001-.013 mean:.0039
range: 0-.011
1.14
0.0047
Riffle Slope mean:.041
range:.013-.095
0.052
Glide Slope
Run Slope
Sp/Savg 0.18 0.17 0.415 0.18
Sr/Savg
1.8
2.08
Sg/Savg
Srun/Savg
max pool depth 3.93 ft 4.66 ft 4.45 It 3.75 ft
Dmax-p/Dbkf
W idth-pool 2.46
29 ft 2.88 4.44
26.9 It 2.75
32 It
W-p/W-bkf
Area-pool 1.15 0.63
48.8 sq ft 1.15
57.2 sq ft
A-PIA-bkf 1.4 1.35
P-P spacing mean: 46.2 rang
19-78 e: mean: 68.2
range: 21-118
74.7 ft
105 It
P-P spacinglWbkf 1.83 1.45 1.74 3.9
Channel Materials
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220
450 60
205
470 34
120
250 34
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D16 9 1.8
D35 26 20.5
D50 54 40.2
D84 190 135
D95 400 205
Sub-Pavement
D16 2 4.6
D35 4.1 21
D50 11 43
D84 46 97
D95 80 110
Bar Sample
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Name: VALLE CRUCIS Location: 036° 12'36.1" N 081° 50' 08.5" W
Date: 9/312002 LQ.%AO•QI Creek Ptoje,-t /?ewcl., Wo,?ersl eel
Scale: 1 inch equals 2000 feet 119 _ Z. 2 I?,; /eSL
Copyright (C) 1997, Maptech, Inc.
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BEN Rating 7 - 3 ?X1?m? 1
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Banc Erosion Prediction at Cross Section -
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Lower Worley Creek Restoration Project Reference Reach Data
(station 1+20: end) (station 0:-1+20)
Reach Name Existing Channel Existing Channel Basin Creek Worley Ck (upper) Proposed Channel
Stream Type C4 E4 C4 C4 C4
Drainage Area 1.3 sq mi 1.3 sq mi 8 sq mi 0.96 sq mi 1.3 sq mi
Bankfull Width 15 ft loft 30.7 ft 15 ft 16-18 ft
Bkf mean depth 1.2 ft 1.6 1.9 ft 1.2 ft 1.22
W/D 12.5 6.25 16.4 12.8 14.7
Area, bkf 18.1 sq ft 16 sq ft 57.4 sq ft 17.6 sq ft 22 sq ft
mean Velocity 4.8 ft/sec 4.9 ft/sec 5.4 ft/sec
bkf Q -120 cfs -120 cfs -120 cfs
max depth bkf 1.7 2.35 ft 2.5 ft 1.7 ft 2.0 ft
d-max/d-bkf 1.4 1.47 1.7 1.4 1.6
bank height ratio 1.6 1.4 1 1 1
Width fpa 23 ft. 120 +/- ft 85 ft 50 ft 75 + ft
Entrenchment Ratio 1.5 12 2.8 3.3 4.2+
Meander Length 98 ft 98 ft 350 ft 135 ft 114 ft
Belt Width 52 ft 40 ft 105 ft 71 ft 60 ft
Radius of Curvature 20 ft 20 ft 77-134 ft 20.70 28 ft
Lm/Wbkf 6.5 9.8 11.4 9 6.3
RclWbkf 1.33 2 2.5-4.4 1.38 2.8
Wbit/Wbkf 3.5 4 3.4 4.7 3.2
Sinuosity 1.3 1.26 1.02 1.5 1.2
Valley Slope 0.0116 0.0174 0.014 0.025 0.016
Avg. Slope 0.0144 0.0138 0.014 0.017 0.012
Pool Slope 0.0037 0.0026 0.005 0.0035 0.0024
Riffle Slope 0.026 0.031 0.051 0.041 0.0255
Glide Slope
Run Slope
Sp/Savg 0.26 0.19 0.39 0.21 0.21
Sr/Savg 1.8 2.25 3.61 2.46 2.04
Sg/Savg
Srun/Savg
max pool depth 2.88 ft 3.1 ft 1.7 ft 1.8 ft 2.5
Dmax-p/Dbkf 1.7 1.94 0.9 1.5 2
Width-pool 18 ft loft 40.6 ft 15 ft 24
W-p/W-bkf 1.2 1 1.3 1 1.3
Area-pool 28 sq ft 19.2 sq ft 64.4 sq ft 26.8 sq ft 28.6
A-p/A-bkf 1.5 1.2 1.1 1.5 1.3
P-P spacing 38-80 ft 38-80 ft 224 ft 125 ft 90 ft
P-P spacing/Wbkf 2.5-5.3 2.1-4.4 7.3 8.3 5
Channel Materials
D16 0.35mm 0.35mm 4.8mm 1.7mm 0.35mm
D35 4mm 4mm 20mm 8mm 4mm
D50 9mm 9mm 38mm 45mm 9mm
D84 100mm 100mm 130mm 160mm 100mm
D95 250mm 250mm 230mm 230mm 250mm
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Name: VALLE CRUCIS Location: 036° 12'58.8" N 081 ° 49' 47.1" W
Date: 9/3/2002 J
Scale: 1 inch equals 2000 feet Worley C+eek%ec.T tZeticL. WKdars ?+ac?
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POOL 0
P?4f ? I C,?r per` F ? \P Ff`
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III-_ 111 PROPOSED EE0 ELEV<T10N
111 =III _ III III
111
GEOIEXTILE FABRI
FOOTER ROCK
11w&"T1*
A trench shall be dug in a
manner that the footer rocks.
cross Header rOCks and a
MIN of 1/3 of the wing
header rocks are buried
beneath the tleI surface
elevation. Rocks are
precisely placed with a
nydraulic thumb. Footer
roCks Shall be placed first
wltn neader rocks placed
on top prior t0 baCkf illing
the trench. In the tenter
(cross) portion the header
rocks shall be ulaced so
that the t00 Of the header
rock is an aIevat Tan adue]
to the prODaeed bed
elevation. Geotextile fabric
shat] be olaced in the
trench with appr0k. 2 ft.
of over la0. RC Ck fill mater-
ial Snall be back felled
around the fabric. Tne
reader rocks on the wing
portion snalI be placed
SO tnat they S100e ub from
the bed elevation at the cross
oartion, to a bank full elevation
and meet the bank at a 20 deg.
angle. Header and footer rocks
at both ends Shall be tied in
secur e]y to Lne bank to
eliminate the 00ss3bi]ity of
water diversion.
Hoer No oerAm
FOOTER LOG
FLOW
BKF
WAT SURFACE
FOOTER LOG'
rALJ Arm A trench shall oe dug along the tee of the hank to a de0th of
the tli amet or of the faa[er lag. A prunso feat er log snail 6e
placetl at the tae of the cnannel antl the root wad snail oe
Dlaced directly above it. The velocity vectors of the stream
0f the cnannel are aligned with the trunks ]onglt UdlnaI axis
and w, 1 intersect the root mass at a 90 degree angle. A
h aUl tler may Is plaC etl pn the tlown stream =side. an tap of,
and an the Upstream side het Meen the rcotmass and
the hank to prDVjde erosion control.
J-HOOK DETAIL
3-7% SLOPE
20-30 DEGREES
HA7ER SURq1GOIERROCK
FLOW v PROFILE VIEW
BKF
PLAN VIEW WATER SURFACE
I
FOOTER FOLKS
CROSS-SECTION VIEW
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4 of 6
Restoration Plan
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