20060875 Ver 1_Complete File_20060524

I
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Office Use Only: Form Version March 05
USACE Action ID No. D`VQ No. 2 (' u 0 3 ( 5
kii airy Yai UGUrar near is not appucame to tnis project, please enter "Not Applicable" or "N/A".)
I
II.
Processing
1. Check all of the approval(s) requested for this project:
© Section 404 Permit ? Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
401 Water Quality Certification ? Express 401 Water Quality Certification
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:
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
Applicant Information
1. Owner/Applicant Information
Name: Jane Pyle
Mailing Address: 159 W Salisbury St
. . Pittsboro, NC 27312-4149
F&ROW[Ey
MAY 2 4 2006
DENR - WATER QUALITY
VIt'"Tiq OSNiO STOR?MTER DRIINCH
Telephone Number: 919-542-3603 Fax Number:
E-mail Address:
2. Agent/Consultant 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: Karen Hall
Company Affiliation: North Carolina State University
Mailing Address: Campus Box 7637
Raleigh, NC 27695-7367
Telephone Number: 919-515-8242 Fax Number: 919-515-7448
E-mail Address: karen hall(aancsu.edu
Updated 11/1/2005
Page 5 of 13
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 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: Tannery Branch UT to Little Creek Stream Restoration
2. T.I.P. Project Number or State Project Number (NCDOT Only): n/a
3. Property Identification Number (Tax PIN): 9741-67-4598 9741-67-3457
4. Location
County: Chatham Nearest Town: Pittsboro
Subdivision name (include phase/lot number):
Directions to site (include road numbers/names, landmarks, etc.): 159 W. Salisbury St.
Pittsboro. See vicinity map. Hwy 64 west to Pittsboro around courthouse continue on 64
Bus. Rectory Street is second street on right from courthouse
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35°43'17" ON 79°10'50" °W
6. Property size (acres)
7. Name of nearest receiving body of water: Little Creek to Robeson Creek
8. River Basin: Cape Fear
(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/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site currently is a vacant lot in town. It is mowed and
maintained by the landowner. The UT which was historical) straightened and moved to the
Updated 11/1/2005
Page 6 of 13
edge of the valley, is severely incised and actively eroding See Appendices I throe hg V for
more information.
10. Describe the overall project in detail, including the type of equipment to be used: The
existing stream will be relocated and reconnected to the adjacent floodplain using natural
channel design. The old channel will then be filled in and the surrounded floodplain planted
with native plants. Equipment will include 1 tracked excavator. See Appendices I through V
for more information.
11. Explain the purpose of the proposed work: To increase the stability of the stream channel
reduce sediment inputs into the watershed handle stormwater inputs more effectively, create
terrestrial and aquatic habitat in an urban setting, and use project for education and
demonstration purposes. See Appendices I through V for more information
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. N/A
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
NO.
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. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
Updated 11/112005
Page 7 of 13
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and strealn 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.
Provide a written description of the proposed impacts: The UT to Little Creek has
been channelized for approximately 267 linear feet This project will reconnect the stream to
the original floodplain and restore the stream to a natural dimensioned form pattern and
profile. The abandoned channelized reach will be filled with material excavated from the new
channel. The new channel will be 378 linear feet long. A plan drawing vicinity map and
photos are attached in Appendix I.
2. Individually list wetland impacts. Types of 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-
Wetland Impact
Site Number
(indicate on map)
Type of Impact Type of Wctland
(e.g., forested, marsh,
herbaceous, bog, etc.) Located within
100-year
Floodplain
(yes/no) Distance to
Nearest
Stream
linear feet Area of
Impact
(acres)

Total Wetland Impact (acres) 0
3. List the total acreage (estimated) of all existing wetlands on the property: N/A
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, darn
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, 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. To calculate acreage. multiply length X width- tl,f-.n dividf-. by 41 Sin
Stream Impact
Number
indicate on ma
Stream Name
Type of Impact
Perennial or
Intermittent? Average
Stream Width
Before Imp act Impact
Length
linear feet Area of
Impact
acres
UT-1 UT to Little Creek Relocation Intermittent 7 feet 267 -1

L
Updated 11/1/2005
Page 8 of 13
Total Stream Impact (by length and acreage) 267 --1
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill, excavation, dredging, flooding, drainage bulkheads etc
Open Water Impact
Site Number
(indicate on ma) Name of Waterbody
(if applicable)
Type of Impact Type of Waterbody
(lake, pond, estuary, sound, bay,
ocean, etc.) Area of
Impact
(acres)

Total Open Water Impact (acres) p
6. List the cumulative impact to all Waters of the U.S. resulting from the nrnif-.ct-
Stream Impact (acres): --1
Wetland Impact (acres): p
Open Water Impact (acres): p
Total Impact to Waters of the U.S. (acres) Q
Total Stream Impact (linear feet): 267
7. Isolated Waters
Do any isolated waters exist on the property? ? Yes R?No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
S. 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): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): n/a
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): n/a
Current land use in the vicinity of the pond: n/a
Size of watershed draining to pond: Expected pond surface area:
VII. Impact Justification,(Avoidance and Minimization)
Updated 11/1/2005
Page 9 of 13
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.
This proiect is designed to provide a net gain in improved water quality and aquatic function
for the stream and watershed. Measures will be taken to minimize potential sedimentation to
downstream waters including Little Creek and Robeson Creek In addition,g grading operations
and subsequent stabilization with erosion control matting will be expedited in order to minimize
the exposure time for the potential erosion and associated sedimentation
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 January 15, 2002, 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 NCEEP 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
httR://h2o.enr.state.nc.us/ncwetlands/strmgide.litml.
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
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Updated 11/1/2005
Page 10 of 13
n/a-Mitieation not reauired
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at httn://h2o.enr.state.ne.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of ublic (federal/state/local) funds or the use of
public (federal/state) land? Yes X No ?
2. 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 [phone] to review current thresholds for environmental documentation.
Yes ? No VX]
3. 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 (required by DWQ)
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
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 213 .0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
Updated 11/1/2005
Page 11 of 13
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify V Yes ? No
11 N
2. If "yes", 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 Multiplier Required
(square feet) Mitigation
1 3 (2 for Catawba)
2 1.5
Total
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or.0244, or.0260. n/a
XI. Stormwater (required by DWQ)
Describe impervious acreage (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. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. no impervious acreage
XII. Sewage Disposal (required by DWQ)
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.
No wastewater generated
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application? Yes . ? No
XIV. Cumulative Impacts (required by DWQ)
Updated 11/1/2005
Page 12 of 13
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.nc.us/ncwetiands. If no, please provide a short narrative description:
This is a stream restoration project that will improve downstream water quality
XV. 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).
c.._ f- l",K? Y 1l--y ) 9. 2 0 a
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Updated 11/1/2005
Page 13 of 13
Appendix I
Tannery Branch Restoration Plan
Existing Conditions
An unnamed tributary, which will be referred to as Tannery Branch is a first order stream
located within the Robeson Creek Watershed. The Robeson Creek watershed, located
within the lower Haw River watershed (Cape Fear Subbasin 030604; HUC
03030002060030), lies within Chatham County, North Carolina and encompasses 28.6
square miles (see Figure 1). Located in the Piedmont physiographic region and lying
within the Carolina Slate Belt, this is a mostly rural and forested watershed with a small
urban component. The Robeson Creek watershed serves as a water supply source to
Jordan Lake, a major water supplier to the Triangle Area of North Carolina. Although
Robeson Creek is classified as a water supply watershed (WS-IV), nutrient sensitive
(NSW), and a class C waterbody, the creek is a 303(d) listed stream rated as Partially
Supporting with chlorophyll a violations and habitat degradation in the lower stream
segment in and above its confluence with the Haw River arm of Jordan Lake, and
Partially Supporting in the upper segment with impaired biological communities
throughout most of the stream reach (SR 2159 to upstream of mouth)(Cape Fear River
Basinwide Water Quality Plan, August 2000).

tr t Lege nd

•., /+,
_ ??? ? ? ; Robeson Creek
Major Roads

_ t \ 1 Town Limits
•, ?`:' ? •? ? ? ? RoOeson Watersh e4

•\
f
l \
?• 'i
?
Yom, ..

Figure 1: Robeson Creek Watershed location.
Tannery Branch is located in an established neighborhood in Pittsboro (see Figure 2) and
runs through a vacant, grassed lot. The watershed is dominated by roads, houses, a
Tnrnnnni Rrnnnh
Y
Figure 2: Tannery Branch vicinity map.

T Created by: NCSU Water Quielity Group Project Construction Area
cemetery and some commercial development. It drains approximately 13 acres (0.02
square miles), 50 percent of which is impervious surface in the form of paved parking
lots. The remaining parcels are primarily mowed lawns within the residential area.
Soils are Georgeville which are deep and well drained. The primary water source is an
underground spring originating under Salisbury Street. During storm events, there are
water inputs into the existing channel from curb and gutter systems within the area. The
existing channel is incised and shows evidence of historically being ditched, straightened,
and moved from the valley center. Continual erosive forces are downcutting this channel
and undermining Rectory Street at the culvert (see Photo 1). The existing channel
classifies as a Rosgen E4 stream with an Entrenchment Ratio of 2.4, a slope of 0.029 and
a sinuosity of 1.1 (Appendix II). The channel is deeply incised with a Bank Height Ratio
of 1.9. Thus, the bankfull stage is not at the top of bank. If the stream downcuts by only
0.3 feet, it will classify as a Rosgen G4 channel. A small bankfull bench was identified in
the existing gully and a bankfull cross-sectional area of 5 square feet was measured (see
Photo 2). The watershed area is significantly smaller than any streams surveyed for the
development of the Piedmont Urban or Rural Regional Curves. The channel has a
uniform riffle/run bed with vertical streambanks. Very few trees exist along the current
channel; however it is lined with the invasive exotic plant Chinese privet (Ligustrum
sinense). The surrounding riparian area is mowed lawn on either side of the channel (see
Photo 3).

Photo 1: Rectory Street culvert with erosion.
?I
Photo 2: Bankfull bench in incised channel.
Photo 3: Tannery Branch on left and valley in center.
Restoration Approach
The restoration will involve filling the existing 267 feet of channel that is approximately
7 feet wide and 2.7 feet deep and replacing this incised channel with a meandering E
stream (see Figure 3 and Appendix III). The reference channel for the restoration is a
tributary to Middle Creek located near the Town of Holly Springs. A design bankfull
cross-sectional area of 4 square feet was selected in order to have water access the
floodplain at flows slightly below the estimated bankfull discharge. This approach is
intended to reduce the stress on the newly excavated streambanks that will have little
vegetation during the first year following project construction. The new channel will be
378 feet long, 7 feet wide and will have a mean and max riffle depth of 0.6 and 0.9 feet,
respectively. The new stream channel will have a bank height ratio of 1, an entrenchment
ratio of 10, a sinuosity of 1.5 and a slope of 0.02 (Appendices III, IV, and V). A large
boulder basin will be constructed at the head of the project in order to dissipate the
energy of two stormwater outfalls that form the head of the stream reach. Boulder cross-
vane structures will be used for grade control, pool formation and to create steps in the
channel in order to reduce the riffle slopes in the channel.
Native vegetation will be planted within the riparian area, extending out between 20 to 40
feet on either side of the channel. Table 1 lists plant species to be used. A combination of
container trees, shrubs, and herbaceous plants will cover the entire riparian area. Invasive
exotic vegetation will be treated prior to and after construction of the new channel.
Monitoring and maintenance will continue for several years following construction.
Scientific Name Common Name
Betula ni ra River birch
Platanus occidentalis Sycamore
uercus michauxii Swam chestnut oak
uercus pagoda Cherr bark oak
Lindera benzoin S icebush
Alnus serrulata Ta alder
Sor hasirum nutans Indian rass
Panicuin vir atzun Switch rass
Lobelia cardinalis Cardinal flower
Table 1. Native permanent plants to be installed.
All sediment and erosion control laws will be adhered to. The new channel will be
constructed in the dry. Temporary cover in the form of brown top millet will be
immediately applied at 30 lbs/acre immediately following construction activities. Straw
mulch will be applied on top of newly seeded floodplain. Coir matting will be applied
along banks from toe slope to top of bank.
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TANNERY CREEK RESTORATION
AT JANE PIKE RESIDENCE { ti
d 6 FI TTSBORO. NC
' Design Plan Yew "a"'?""•°""`""'e° ;:`
M+.v
Figure 3. Tannery Branch restoration plan view.
Appendix II
Existing Cross Sections: Tannery Branch
Tannery Creek Riffle Cross-Section
Point
-------------- Station
---------------- Offset
--------------- Elevation Description
------------------------------
-----
117 0 0 98.53 xs1
116 5.59 -0.1348 99.17 xs1 Wetted P Width
115 6.38 -0.0103 97.7 xs1-BKF
114 8.64 -0.0617 97.06 xs1 2.3 2.26
113 8.92 -0.0315 96.5 xs1 0.6 0.28
112 10.05 -0.0413 96.39 xs1 1.1 1.13
111 11.85 0.0284 96.27 xs1 1.8 1.8
added 12.3 97.7 1.5 0.440827
110 12.67 .-0.0947 98.93 xs1 7.4
109 20 0 99.39 xs1
Depth Ave Depth Area Bankfull Width 5.9
0 Bankfull Area 5.2
0.64 0.32 0.7 Average Depth 0.9
1.2 0.92 0.3 Max Depth 1.4
1.31 1.255 1.4 W/D 6.7
1.43 1.37 2.5 2'Dmax 2.9
0 0.715 0.3 Floodprone Elev 99.1
5.2 Floodprone Width .14.4
ER 2.4
Rosgen Class E
Dtob 2.66
BHR 1.9
Tannery Riffle Cross-Section
100-

99
5
.
99 -

98
5
.
c
0 98

R
7
.5
w 9
97

96.5

96
0 5 10 15 20 25
Station (ft)
Tannery Creek Pool Cross-Section
Point .
-------------- Station
--------------- Offset .
---------------- Elevation Description
------------------------------
-----
118 0 0 97.13 xs2
119 7.23 0.0248 96.87 xs2
120 8.67 0.0421 95.69 xs2 Width
121 9.81 0.0284 94.7 xs2-BKF
122 12.67 -0.2779 94.36 xs2 2.86
123 12.87 0.1402 93.21 xs2 0.2
124 14.26 0.0854 93.11 xs2 1.39
125 15.84 -0.0916 93.51 xs2 1.58
16.5 94.7 BKF 0.6375
126 16.59 0.0409 94.91 xs2
127 17.4 0.2283 95.45 xs2
128 18.04 0.0777 96.77 xs2
129 19.37 0 97.31 xs2
Depth Ave Depth Area
0 0 0
0.34 0.17 0.4862
1.49 0.915 0.183
1.59 1.54 2.1406
1.19 1.39 2.1962
0 0.595 0.3793125
5.3853125
Bankfull Width 6.7
Bankfull Area 5.4
Average Depth 0.8
Max Depth 1.6
W/D 8.3
Tannery Pool Cross-Section
98
97
5-
.
97
96
5 -
.
96
5
o 95
.
o
95
>
w
94.5 -
94
93.5
93-
92.5
0 5 10 15 20 25
Station (ft)
Appendix III
Design Table: Tannery Branch

Tannery Creek Design Summary Trib. To Middle
Creek
Tannery Creek
Bidelspach/Doll Existing Design
Stream Type E E E
Drainage Area (acres) 0.09 0.02 0.02
Bankfull Cross-Sectional Area (Abkf) 6.7 5.2 4
Bank-full Width (Wbkf) 7.8 5.9 7
Bankfull Mean Depth (Dblf) 0.9 0.9 0.6
Width/Depth Ratio 8.7 6.6 12
Bank-full Maximum Depth (Dmax) 1.4 1.4 0.9
Max Riffle Depth Ratio (Dmax/Dbkf) 1.6 1.8 1.5
Max Depth Top of Bank (DTOB) 1.4 2.7 0.9
Bank Height Ratio (BHR) 1.0 1.9 1
Bankfull mean velocity (Vbkf) 2.2 4.8 3.1
Bankfull Discharge (Qbkf) 14.7 24.8 12.2
Width of Flood Prone Area (Wfpa) 150 14.4 70
Entrenchment Ratio (Wfpa/Wbkf) 19.2 1.3 10.1.
Min Meander Length (Lm) 28.5 n/a 25.6
Max Meander Length (Lm) 64.8 n/a 57.5
Min Meander Length Ratio (Lin/Wbkf) 3.7 n/a 3.7
Max Meander Length Ratio (LuVWbkf) 8.3 n/a 8.3
Min Radius of Curvature (Rc) 7 n/a 10.4
Max Radius of Curvature (Rc) 18.5 n/a 16.6
Min Radius of Curvature Ratio (Rc/Wbkf) 0.9 n/a 1.5
Max Radius of Curvature Ratio (Rc/Wbkf) 2.4 n1a 2.4
Min Belt Width (Wblt) 19 n/a 16.6
Max Belt Width (Wblt) 24.7 n/a 22.2
Min Meander Width Ratio (Wblt/Wbkf) 2.4 n/a 2.4
Max Meander Width Ratio (Wblt/Wbkf) 3.2 n/a 3.2
Sinuosity (K) 1.5 1.1 1.55
Valley Sloe 0.0162 0.0287 0.0205
Avg. Sloe 0.0056 0.026 0.013
Min Riffle Slope (Srif) 0.023 n/a 0.020
Max Riffle Slope (Srif) 0.104 n/a 0.033
Min Riffle Slope/Ave Slope (Sriff/Save) 4.1 n/a 1.5
Max Riffle Slope/Ave Slope (Sriff/Save) 18.6 n/a 2.5
Min Riffle Length Lriffle 1.4 n/a 6.9
Max Riffle Length Lriffle 6.8 n/a 13.9
Min Riffle Length/Bankfull Width (Lrif/Wb 0.2 n/a 1
Max Riffle Lengtli/Bankfull Width (Lrif/Wbk 0.9 n/a 2
Min Pool Slope (Spool) 0.0000 0.0 0
Min Pool Slope Ratio (Spool/Savg) 0.000 0 0
Min Pool Depth (D pool) 2.8 1.6 1.7
Max Pool Depth (Dpool) 2.8 1.6 2.3
Min Pool Depth Ratio (Dpool/Dbkf) 3.1 1.8 3
Max Pool Depth Ratio (Dpool/Dbkf) 3.1 1.8 4
Pool Area (Apool) 6.7 5.4 5.6

Tannery Creek Design Summary Trib. To Middle
Creek
Tannery Creek
Bidelspach/Doll Existing Design
Pool Area Ratio (Apool/Abkf) 1.0 1.0 1.4
Min Pool Length (Lpool) .11.7 24 14
Max Pool Length (Lpool) 26.4 34 28
Min Pool Length Ratio (L ool/Wbkf) 1.5 4.1 2
Max Pool Length Ratio (Lpool/Wbkf) 3.4 5.8 4
Pool Width (Wpool) 10.3 9.8 10.4
Pool Width Ratio (WpoolAVbkf) 1.3 1.7 1.5
Min Pool/Pool Spacing (p-) 17.4 n/a 14
Max Pool/Pool Spacing (p-p) 57.3 n/a 48
Min Pool Spacing Ratio (p- /Wbkf) 2.2 n/a 2
Max Pool Spacing Ratio ( -p/Wbkf) 7.3 n>/a 7
1. Particle Size Distribution of Channel
d16 0.1 0.1 0.1
d35 1.1 4.7 4.7
d50 7.3 14.1 14.1
d84 27.9 61.4 61.4
d95 38.4 92.5 92.5
Appendix IV
Pavement/Subpavement Sample: Tannery Branch
Table 1: Tannery Pavement/Subpavement Sample
Pavement
Medium Sand and Smaller
Course Sand
Very Course Sand
Very Fine Gravel
Fine Gravel
Medium Gravel
Course Gravel
Very Coarse Gravel
Very Coarse Gravel
Small Cobble
Small Cobble
Seive Size
mm
<0.5
0.5-1.0
1.0-2.36
2.36-4.75
4.75-6.3
6.3 - 16
16 - 31.5
31.5-45
45-64
64-90
Sample Wt.
grams
5
8
17
11
7
81
136
337
127
1677
483
2889
Subpavement
Medium Sand and Smaller
Course Sand
Very Course Sand
Very Fine Gravel
Fine Gravel
Medium Gravel
Course Gravel
Very Coarse Gravel
Very Coarse Gravel
Small Cobble
Total
98
Seive Size
mm
<0.5
0.5-1.0
1.0-2.36
2.36-4.75
4.75-6.3
6.3 - 16
16-31.5
31.5-45
64-90
Total
46
Sample Wt.
grams
158
255
387
364
179
723
381
156
91
0
2694
% of total
0.2
0.3
0.6
0.4
0.2
2.8
4.7
11.7
4.4
58.0
16.7
% of total
5.5
8.8
13.4
12.6
6.2
25.0
13.2
5.4
3.1
0.0
Cumulative %
0.2
0.4
1.0
1.4
1.7
4.5
9.2
20.8
25.2
83.3 75.1 =d50
100.0,_,_
Cumulative %
5.5
14.3
27.7
40.3
46.5
71.5
84.7
90.1
93.3
93.3
7.7 -d50
Appendix V
Entrainment Calculation Form: Tannery Branch
ENTRAINMENT CALCULATION FORM
Stream: Tanner Creek Reach: Pittsboro, Pile Residence
Team: Doll & Blackwell Date: Mar-06
Information Input Area
35 Dso Riffle bed material D50 (mm)
12 DAso Bar sample D50 (mm)
46.0 D; Largest particle from bar sample (mm) 0.15 (feet) 304.8 mm/foot
0.013 Sa Existing bankfull water surface slope (ft/ft)
0.6 dB Existing bankfull mean depth (ft)
7 Wbkf Existing or Design Bankfull Width
8.2 P Wetted Perimeter of Riffle Cross Section (ft)
4 A Area of Riffle Cross Section ft
0.49 R Hydraulic Radius of Riffle Cross Section (ft)
1.65 gs Submerged specific weight of sediment

Calculation of Critical Dimensionless Shear Stress
2.92 _D50/DA
so/D s?o If value is between 3-7 Equation 1 will be used: t )' ?7z
?; = 0.0834(Dso/DAso
1.31 D;/D50 If value is between 1.3-3.0 Equation 2 will be used: t o 387
0.0328 t o; Critical Dimensionless Shear Stress Equation used: 2
t c; Critical Dimensionless Shear Stress Equation used: 2
Calcu lation of Bankfull Mean Depth Required for Entrainment of Largest Particle in Bar Sample

0.63
dr SD;
Required bankfull mean depth (ft) dr - - t °'g
S.
0.60 de Existing bankfull mean depth (ft)

Calculation of BKF Water Surface Slope Required for Entrainment of Largest Particle in Bar Sample

0.0136 S, Required bankfull water surface slope (ft) Sr _
t cigsDi dB
0.0130 Se Existing bankfull water surface slope (ft)

Sediment Transport Validation
0.40 Bankfull Shear Stress tc =gRS (lb/ft2) where the Density of water = g = 62.4 Ibs/ft'
30(15-60) Moveable particle size (mm) at bankfull shear stress (predicted by Shields Diagram)
0.6 Predicted shear stress required to initiate movement of D; (mm) (see Shields Diagram)
Note: If available bankfull shear stress exceeds D100 of bed, degradation potential exists.
North Carolina State University is a land-grant NCSU Water Quality Group
university and a constituent institution of the Department of Biological and Agricultural Engineering
University of North Carolina College of Agricultural and Life Sciences
II!C:?:tft--11 Iul?l?ilrl;?sl` `1
Campus Box 7637
Raleigh, North Carolina 27695-7637
919.515.3723 (phone)
919.515.7448 (fax)
Date: May 19, 2006
To: DWQ 410 Wetlands Unit
From: Karen Hall
2 0 0 60 8 7 5
Subject: Nationwide 27: fee waiver ?. ?.
aAJ
To whom it may concern,
Please find attached three courtesy copies of a PCN for the Tannery Creek Restoration in
Pittsboro NC. On May 19, 2006, 1 spoke with Ian McMillan and he said that because this project will
not impact wetlands and is not for compensatory mitigation, no fee is needed. If you have
questions, please contact me at 919-515-8242. Thank you.
Regards,
?C-- \JO-L?
Karen Hall
Extension Associate
NCSU Water Quality Group
U@ @ gfly
D
MAY 2 4 2006
11 dENR - WATER GUAUTy
NtD STORI Wy TER BRANCH
Employment and program opportunities are offered to all people regardless of race, color, nitional origin, gender, age or disability.
North Carolina State University, North Carolina A&T State University, U.S. Department of Agriculture, and local governments cooperatiig.
/ V

Office Use Only: Form Vcrsion March 05
USACE Action ID No. D`VQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1.
II.
Processing
1. Check all of the approval(s) requested for this project:
Section 404 Permit ? Riparian or Watershed Buffer Rules
Section 10 Permit ? Isolated Wetland Permit from DWQ
401 Water Quality Certification ? Express 401 Water Quality Certification
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:
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
Applicant Information
Owner/Applicant Information
Name: Jane Pyle
Mailing Address: 159 W Salisbury St
. . Pittsboro, NC 27312-4149
ac??oeE I
MAY 2 4 2006
ti'UW'DS NID TTOMAWATER BRANCH
Telephone Number: 919-542-3603 Fax Number:
E-mail Address:
2. Agent/Consultant 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: Karen Hall
Company Affiliation: North Carolina State University
Mailing Address: Campus Box 7637
Raleigh, NC 27695-7367
Telephone Number: 919-515-8242 Fax Number: 919-515-7448
E-mail Address: karen [e-mail]
Updated 11/1/2005
Page 5 of 13
III. Project Information
5
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: Tannery Branch UT to Little Creek Stream Restoration
2. T.I.P. Project Number or State Project Number (NCDOT Only): n/a
3. Property Identification Number (Tax PIN): 9741-67-4598 9741-67-3457
4. Location
County: Chatham Nearest Town: Pittsboro
Subdivision name (include phase/lot number):
Directions to site (include road numbers/names, landmarks, etc.):_ 159 W. Salisbury St.
Pittsboro. See vicinity man. Hwy 64 west to Pittsboro around courthouse continue on 64
Bus. Rectory Street is second street on right from courthouse
Site coordinates (For linear projects, such as a road or utility line, attach a
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35°43'17" ON 79°10'50"
6. Property size (acres): 1.31
7. Name of nearest receiving body of water: Little Creek to Robeson Creek
8. River Basin: Cape Fear
(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/mans/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site currently is a vacant lot in town. It is mowed and
maintained by the landowner. The UT which was historically straightened and moved to the
sheet that
ow
Updated 11/1/2005
Page 6 of 13
edge of the valley, is severely incised and actively eroding See Appendices I throe hV for
more information.
10. Describe the overall project in detail, including the type of equipment to be used: The
existing stream will be relocated and reconnected to the adjacent floodplain using natural
channel design. The old channel will then be filled in and the surrounded floodplain planted
with native plants. Equipment will include 1 tracked excavator. See Appendices I through V
for more information.
11. Explain the purpose of the proposed work: To increase the stability of the stream channel
reduce sediment inputs into the watershed handle stormwater inputs more effectively, create
terrestrial and aquatic habitat in an urban setting and use project for education and
demonstration purposes. See Appendices I through V for more information
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. N/A
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
NO.
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. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
Updated 11/1/2005
Page 7 of 13
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should 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. Provide a written description of the proposed impacts: The UT to Little Creek has
been channelized for approximately 267 linear feet This project will reconnect the stream to
the original floodplain and restore the stream to a natural dimensioned form pattern and
profile. The abandoned channelized reach will be filled with material excavated from the new
channel. The new channel will be 378 linear feet long. A plan drawing vicinity map and
photos are attached in Appendix L
2. Individually list wetland impacts. Types of 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 inrd flnndinv
Wetland Impact
Site Number
(indicate on map) Type of Impact Type of Wetland
(e.g., forested, marsh,
herbaceous, bog, etc.) Located within
100-year
lain
p
(yes/no) Distance to
Stream Nearest

linear feet Area of
Impact
(acres)

Total Wetland Impact (acres) 0
3. List the total acreage (estimated) of all existing wetlands on the property: N/A
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, 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. To calculate acreaLye. multinly lennth X width thp„ ri;wMi- hxr Aq Sr,n
Stream Impact
Number
indicate on ma
Stream Name
Type of Impact
Perennial or
Intermittent? Average
Stream Width
Before Impact Impact
Length
linear feet Area of
Impact
(acres)
UT-1 UT to Little Creek Relocation Intermittent 7 feet 267

Updated 11/1/2005
Page 8 of 13
Total Stream Impact (by length and acreage) 267 -1
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill. excavation- dreduinn_ flnnrlino rirninnva hiiR-hiarlc ?t?
Open Water Impact
Site Number
(indicate on ma) Name
(if applicable) Wate)
Type of Impact Type of Waterbody
(lake, pond, estuary, sound, bay,

ocean, etc.) Area of
Impact

(acres)

Total Open Water Impact (acres) 0
6. List the cumulative imnact to A Wnterc of thr- TT q rncnltinn frn- tl,- --t-
Stream Impact (acres): -1
Wetland Impact (acres): 0
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres) 0
Total Stream Impact (linear feet): 267
7. Isolated Waters
Do any isolated waters exist on the property? ? Yes ? o
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
8. 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): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): n/a
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): n/a
Current land use in the vicinity of the pond: n/a
Size of watershed draining to pond: Expected pond surface area:
VII. Impact Justification,(Avoidance and Minimization)
Updated 11/1/2005
Page 9 of 13
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.
This project is designed to provide a net gain in improved water quality and aquatic function
for the stream and watershed. Measures will be taken to minimize potential sedimentation to
downstream waters including Little Creek and Robeson Creek In addition grading operations
and subsequent stabilization with erosion control matting will be expedited in order to minimize
the exposure time for the potential erosion and associated sedimentation
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 January 15, 2002, 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 NCEEP 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/ncwet]ands/strmgide.htm1.
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
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Updated 11/1/2005
Page 10 of 13
n/a-Mitigation not required
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at httn://h2o.enr.state.nc.us/wm/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of blic (federal/state/local) funds or the use of
public (federal/state) land? Yes R No ?
2. 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 [phone] to review current thresholds for environmental documentation.
Yes ? No
3. 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 (required by DWQ)
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
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 213 .0233
(Neuse), 15A NCAC 213 .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
Updated 11/1/2005
Page 11 of 13
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ? No
2. If "yes", 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 for Catawba)
2 1.5
Total
Lone t extends out 3U feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or.0244, or.0260. n/a
XI. Stormwater (required by DWQ)
Describe impervious acreage (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. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. no impervious acreage
XII. Sewage Disposal (required by DWQ)
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.
No wastewater generated
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application? Yes . ? No
XIV. Cumulative Impacts (required by DWQ)
Updated 11/1/2005
Page 12 of 13
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.nc.us/ncwetiands. If no, please provide a short narrative description:
This is a stream restoration project that will improve downstream water quality
XV. 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).
c.._ ?_ l',K? Y 1 . 26 6
Applicant/Agent's Signature U Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Updatcd 11/1/2005
Page 13 of 13
Appendix I
Tannery Branch Restoration Plan
Existing Conditions
An unnamed tributary, which will be referred to as Tannery Branch is a first order stream
located within the Robeson Creek Watershed. The Robeson Creek watershed, located
within the lower Haw River watershed (Cape Fear Subbasin 030604; HUC
03030002060030), lies within Chatham County, North Carolina and encompasses 28.6
square miles (see Figure 1). Located in the Piedmont physiographic region and lying
within the Carolina Slate Belt, this is a mostly rural and forested watershed with a small
urban component. The Robeson Creek watershed serves as a water supply source to
Jordan Lake, a major water supplier to the Triangle Area of North Carolina. Although
Robeson Creek is classified as a water supply watershed (WS-IV), nutrient sensitive
(NSW), and a class C waterbody, the creek is a 303(d) listed stream rated as Partially
Supporting with chlorophyll a violations and habitat degradation in the lower stream
segment in and above its confluence with the Haw River arm of Jordan Lake, and
Partially Supporting in the upper segment with impaired biological communities
throughout most of the stream reach (SR 2159 to upstream of mouth)(Cape Fear River
Basinwide Water Quality Plan, August 2000).
11nI N+n ?qn

F
?
t
,
? 1 1 ? •? ?? 7?Le?- -
?
MCI 1
1 :?/ ,
~

Legend
?!^ ?• V
? Robeson Creek
•.• +? _ ?
Y Mayor Reads
it
T
Li
own
m
s
•; 1 - Robeson Watershed

121

Figure 1: Robeson Creek Watershed location.
Tannery Branch is located in an established neighborhood in Pittsboro (see Figure 2) and
runs through a vacant, grassed lot. The watershed is dominated by roads, houses, a
Tnnncmi Rronr-h
Figure 2: Tannery Branch vicinity map.

T Created by: NCSU Water Quality Group Project Construction Area
cemetery and some commercial development.
square miles), 50 percent of which is impervic
lots. The remaining parcels are primarily mow
Soils are Georgeville which are deep and well d
underground spring originating under Salisbury
water inputs into the existing channel from curt
existing channel is incised and shows evidence
and moved from the valley center. Continual er,
and undermining Rectory Street at the culvert (:
classifies as a Rosgen E4 stream with an Entren
a sinuosity of 1.1 (Appendix Il). The channel is
of 1.9. Thus, the bankfull stage is not at the top
0.3 feet, it will classify as a Rosgen G4 channel
the existing gully and a bankfull cross-sectional
Photo 2). The watershed area is significantly sn
development of the Piedmont Urban or Rural R
uniform riffle/run bed with vertical streambank;
channel; however it is lined with the invasive ei
sinense). The surrounding riparian area is mow4
Photo 3).
drains approximately 13 acres (0.02
> surface in the form of paved parking
l lawns within the residential area.
rained. The primary water source is an
Street. During storm events, there are
and gutter systems within the area. The
)f historically being ditched, straightened,
isive forces are downcutting this channel
ee Photo 1). The existing channel
.hment Ratio of 2.4, a slope of 0.029 and
deeply incised with a Bank Height Ratio
)f bank. If the stream downcuts by only
A small bankf ill bench was identified in
area of 5 square feet was measured (see
aller than any streams surveyed for the
;gional Curves. The channel has a
. Very few trees exist along the current
otic plant Chinese privet (Ligustrum
d lawn on either side of the channel (see

Photo 1: Rectory Street culvert with erosion.

f
:

F

7 -

Photo 2: Bankfull bench in incised channel.
Photo 3: Tannery Branch on left and valley in center.
Restoration Approach
The restoration will involve filling the existing 267 feet of channel that is approximately
7 feet wide and 2.7 feet deep and replacing this incised channel with a meandering E
stream (see Figure 3 and Appendix III). The reference channel for the restoration is a
tributary to Middle Creek located near the Town of Holly Springs. A design bankfull
cross-sectional area of 4 square feet was selected in order to have water access the
floodplain at flows slightly below the estimated bankfull discharge. This approach is
intended to reduce the stress on the newly excavated streambanks that will have little
vegetation during the first year following project construction. The new channel will be
378 feet long, 7 feet wide and will have a mean and max riffle depth of 0.6 and 0.9 feet,
respectively. The new stream channel will have a bank height ratio of 1, an entrenchment
ratio of 10, a sinuosity of 1.5 and a slope of 0.02 (Appendices III, IV, and V). A large
boulder basin will be constructed at the head of the project in order to dissipate the
energy of two stormwater outfalls that form the head of the stream reach. Boulder cross-
vane structures will be used for grade control, pool formation and to create steps in the
channel in order to reduce the riffle slopes in the channel.
Native vegetation will be planted within the riparian area, extending out between 20 to 40
feet on either side of the channel. Table 1 lists plant species to be used. A combination of
container trees, shrubs, and herbaceous plants will cover the entire riparian area. Invasive
exotic vegetation will be treated prior to and after construction of the new channel.
Monitoring and maintenance will continue for several years following construction.
Scientific Name Common Name
Beluda ni ra River birch
Platanus occidentalis Sycamore
uercus michauxii Swam chestnut oak
uercus a oda Cherr bark oak
Lindera benzoin S icebush
Ahnis serrulata Tag alder
Sor hastrum nutans Indian grass
Panicum vir alum Switch grass
Lobelia cardinalis Cardinal flower
Table 1. Native permanent plants to be installed.
All sediment and erosion control laws will be adhered to. The new channel will be
constructed in the dry. Temporary cover in the form of brown top millet will be
immediately applied at 30 lbs/acre immediately following construction activities. Straw
mulch will be applied on top of newly seeded floodplain. Coir matting will be applied
along banks from toe slope to top of bank.
N Road
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6 ?7 o !p
Y TANNERY CREEK RESTORATION
d _ Al JANE flIE RESIDENCE xldlli?
d 6 ? PITi5BCR0. RC _ - _- ?-- ?
' Design Flan View _-
Figure 3. Tannery Branch restoration plan view.
Appendix II
Existing Cross Sections: Tannery Branch
Tannery Creek Riffle Cross-Section
Point
--------------- Station
--------------- Offset
--------------- Elevation Description
------------------------------
-----
117 0 0 98.53 xs1
116 5.59 -0.1348 99.17 xs1 Wetted P Width
115 6.38 -0.0103 97.7 xs1-BKF
114 8.64 -0.0617 97.06 xs1 2.3 2.26
113 8.92 -0.0315 96.5 xs1 0.6 0.28
112 10.05 -0.0413 96.39 xs1 1.1 1.13
111 11.85 0.0284 96.27 xs1 1.8 1.8
added 12.3 97.7 1.5 0.440827
110 12.67 -0.0947 98.93 xs1 7.4
109 20 0 99.39 xs1
Depth Ave Depth Area Bankfull Width 5.9
0 Bankfull Area 5.2
0.64 0.32 0.7 Average Depth 0.9
1.2 0.92 0.3 Max Depth 1.4
1.31 1.255 1.4 W/D 6.7
1.43 1.37 2.5 2*Dmax 2.9
0 0.715 0.3 Floodprone Elev 99.1
5.2 Floodprone Width .14.4
ER 2.4
Rosgen Class E
Dtob 2.66
BHR 1.9
Tannery Riffle Cross-Section
100-

99
5
.
99

98
5
.
c
0 98

C
97
5
.
w
97

5
96.

96
0 5 10 15 20 25
Station (ft)
Tannery Creek Pool Cross-Section
Point
-------------- Station
--------------- Offset _
---------------- Elevation Description
------------------------------
118 0 0 97.13 xs2
119 7.23 0.0248 96.87 xs2
120 8.67 0.0421 95.69 xs2
121 9.81 0.0284 94.7 xs2-BKF
122 12.67 -0.2779 94.36 xs2
123 12.87 0.1402 93.21 xs2
124 14.26 0.0854 93.11 xs2
125 15.84 -0.0916 93.51 xs2
16.5 94.7 BKF
126 16.59 0.0409 94.91 xs2
127 17.4 0.2283 95.45 xs2
128 18.04 0.0777 96.77 xs2
129 19.37 0 97.31 xs2
Width Depth Ave Depth Area
0 0 0
2.86 0.34 0.17 0.4862
0.2 1.49 0.915 0.183
1.39 1.59 1.54 2.1406
1.58 1.19 1.39 2.1962
0.6375 0 0.595 0.3793125
5.3853125
Bankfull Width 6.7
Bankfull Area 5.4
Average Depth 0.8
Max Depth 1.6
W/D 8.3
Tannery Pool Cross-Section
98
97
5
.
97
96
5 -
.
96
v
5
0 95
.
95
-
94.5-
94-
93.5-
93
92.5
0 5 10 15 20 25
Station (ft)
Appendix III
Design Table: Tannery Branch

Tannery Creek Design Summary Trib. To Middle
Creek
Tannery Creek
Bidelspach/Doll Existing Design
Stream Type E E E
Drainage Area (acres) 0.09 0.02 0.02
Bankfull Cross-Sectional Area (Abkf) 6.7 5.2 4
Bankfull Width (Wbkf) 7.8 5.9 7
Bankf ill Mean Depth (Dbkf) 0.9 0.9 0.6
Width/Depth Ratio 8.7 6.6 12
Bank-full Maximum Depth (Dmax) 1.4 1.4 0.9
Max Riffle Depth Ratio (Dmax/Dbkf) 1.6 1.8 1.5
Max Depth Top of Bank (DTOB) 1.4 2.7 0.9
Bank Height Ratio (BHR) 1.0 1.9 1
Bankfull mean. velocity (Vbkf) 2.2 4.8 3.1
Bankfull Discharge (Qbkf) 14.7 24.8 12.2
Width of Flood Prone Area (Wfpa) 150 14.4 70
Entrenchment Ratio (Wfpa/Wbkf) 19.2 1.3 10.1
Min Meander Length (Lm) 28.5 n/a 25.6
Max Meander Length (Lm) 64.8 n/a 57.5
Min Meander Length Ratio (Lin/Wbkf) 3.7 n/a 3.7
Max Meander Length Ratio (Lm/Wbkf) 8.3 n/a 8.3
Min Radius of Curvature (Rc) 7 n/a 10.4
Max Radius of Curvature (Rc) 18.5 n/a 16.6
Min Radius of Curvature Ratio (Rc/Wbkf) 0.9 n/a 1.5
Max Radius of Curvature Ratio (Rc/Wbkf) 2.4 n/a 2.4
Mul Belt Width (Wblt) 19 n/a 16.6
Max Belt Width (Wblt) 24.7 n/a 22.2
Min Meander Width Ratio (Wblt/Wbkf) 2.4 n/a 2.4
Max Meander Width Ratio (Wblt/Wbkf) 3.2 n/a 3.2
Sinuosity (K) 1.5 1.1 1.55
Valley Slope 0.0162 0.0287 0.0205
Avg. Slope 0.0056 0.026 0.013
Min Riffle Slope (Srif) 0.023 n/a 0.020
Max Riffle Slope (Srif) 0.104 n/a 0.033
Mui Riffle Slope/Ave Slope (Sriff/Save) 4.1 n/a 1.5
Max Riffle Slope/Ave Slope (Sriff/Save) 18.6 n/a 2.5
Min Riffle Length Lriffle 1.4 n/a 6.9
Max Riffle Length Lriffle 6.8 n/a 13.9
Min Riffle Length/Bankfull Width (LrifAVb 0.2 n/a 1
Max Riffle LengtldBankfull Width (Lrif/Wb 0.9 n/a 2
Mill Pool Slope (Spool) 0.0000 0.0 0
Min Pool Slope Ratio (S ool/Savg) 0.000 0 0
Min Pool Depth (D pool) 2.8 1.6 1.7
Max Pool Depth (Dpool) 2.8 1.6 2.3
Min Pool Depth Ratio (Dpool/Dbkf) 3.1 1.8 3
Max Pool Depth Ratio (Dpool/Dbkf) 3.1 1.8 4
Pool Area (Apool) 6.7 5.4 5.6

Tannery Creek Design Summary Trib. To Middle
Creek
Tannery Creek
Bidelspach/Doll Existing Design
Pool Area Ratio (Apool/Abkf) 1.0 1.0 1.4
Min Pool Length (Lpool) .11.7 24 14
Max Pool Length (Lpool) 26.4 34 28
Min Pool Length Ratio (L ool/Wbkf) 1.5 4.1 2
Max Pool Length Ratio (L ool/Wbkf) 3.4 5.8 4
Pool Width (Wpool) 10.3 9.8 10.4
Pool Width Ratio (WpoonVbkf) 1.3 1.7 1.5
Min Pool/Pool Spacing (p-) 17.4 n/a 14
Max Pool/Pool Spacing (p-p) 57.3 n/a 48
Min Pool Spacing Ratio (p-pAVbkf) 2.2 n/a 2
Max Pool Spacing Ratio (p-p/Wbkf) 7.3 n/a 7
1. Particle Size Distribution of Channel
d16 0.1 0.1 0.1
d35 1.1 4.7 4.7
d50 7.3 14.1 14.1
d84 27.9 61.4 61.4
d95 38.4 92.5 92.5
Appendix IV
Pavement/Subpavement Sample: Tannery Branch
Table 1: Tannery Pavement/Subpavement Sample
Pavement Seive Size
mm
Medium Sand and Smaller <0.5
Course Sand 0.5-1.0
Very Course Sand 1.0-2.36
Very Fine Gravel 2.36-4.75
Fine Gravel 4.75-6.3
Medium Gravel 6.3 - 16
Course Gravel 16 - 31.5
Very Coarse Gravel 31.5-45
Very Coarse Gravel 45-64
Small Cobble 64-90
Small Cobble 98
Total
Subpavement Seive Size
mm
Medium Sand and Smaller <0.5
Course Sand 0.5-1.0
Very Course Sand 1.0-2.36
Very Fine Gravel 2.36-4.75
Fine Gravel 4.75-6.3
Medium Gravel 6.3 - 16
Course Gravel 16 - 31.5
Very Coarse Gravel 31.5-45
Very Coarse Gravel 4
Small Cobble 64-90
Total
Sample Wt.
grams % of total Cumulative %
5 0.2 0.2
8 0.3 0.4
17 0.6 1.0
11 0.4 1.4
7 0.2 1.7
81 2.8 4.5
136 4.7 9.2
337 11.7 20.8
127 4.4 25.2
1677 58.0 83.3 75.1 =d50
483 16.7 100.0
2889
Sample Wt.
grams % of total Cumulative %
158 5.5 5.5
255 8.8 14.3
387 13.4 27.7
364 12.6 40.3
179 6.2 46.5
723 25.0 71.5 7.7 =d50
381 13.2 84.7 ,
156 5.4 90.1
91 3.1 93.3
0 0.0 93.3
2694
Appendix V
Entrainment Calculation Form: Tannery Branch
ENTRAINMENT CALCULATION FORM
Stream: Tanner Creek Reach: Pittsboro, Pile Residence
Team: Doll & Blackwell Date: Mar-06
Information Input Area
35 D50 Riffle bed material D50 (mm)
12 D^50 Bar sample D50 (mm)
46.0 D, Largest particle from bar sample (mm) 0.15 (feet) 304.8 mm/foot
0.013 S8 Existing bankfull water surface slope (ft/ft)
0.6 de Existing bankfull mean depth (ft)
7 Wbkf Existing or Design Bankfull Width
8.2 P Wetted Perimeter of Riffle Cross Section (ft)
4 A Area of Riffle Cross Section ft
0.49 R Hydraulic Radius of Riffle Cross Section ft
1.65 gs Submerged specific weight of sediment

Calculation of Critical Dimensionless Shear Stress
2.92 D50/D'50 If value is between 3-7 Equation 1 will be used: t c; = 0.0834(D50/D'5o) .b72
1.31 D;/D50 If value is between 1.3-3.0 Equation 2 will be used: t ° B57
0.0328 t c; Critical Dimensionless Shear Stress Equation used: 2
t ?; Critical Dimensionless Shear Stress Equation used: 2
Calcu lation of Bankfull Mean Depth Required for Entrainment of Largest Particle in Bar Sample

0.63 d, Required bankfull mean depth (ft) dr = t cigsD'
S.
0.60 de Existing bankfull mean depth (ft)

Calculation of BKF Water Surface Slope Required for Entrainment of Largest Particle in Bar Sample

0.0136 Sr Required bankfull water surface slope (ft) Sr
t cigsDi de
0.0130 Se Existing bankfull water surface slope (ft)

Sediment Transport Validation
0.40 Bankfull Shear Stress tc =gRS (lb/ft2) where the Density of water = g = 62.4 Ibs/ft'f
30(15-60) Moveable particle size (mm) at bankfull shear stress (predicted by Shields Diagram)
0.6 Predicted shear stress required to initiate movement of D; (mm) (see Shields Diagram)
Note: If available bankfull shear stress exceeds D100 of bed, degradation potential exists.
1_0
Office Use Only: Form Version March 05
(? o ii
USACE Action ID No. DWQ No.
k1l ally panicurar IIein is not appucame to this project, please enter "Not Applicable" or "N/A".)
1.
II.
Proccssinb
1. Check all of the approval(s) requested for this project:
Section 404 Permit ? Riparian or Watershed Buffer Rules
Section 10 Permit ? Isolated Wetland Permit from DWQ
401 Water Quality Certification ? Express 401 Water Quality Certification
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: N
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
Applicant Information
Owner/Applicant Information
Name: Jane Pyle
Mailing Address: 159 W Salisbury St
. . Pittsboro, NC 27312-4149
MAY 2 4 2006
DENR - WATER QUALITY
ri'ETLANDS AND STOFJ.RNATER BRANCH
Telephone Number: 919-542-3603 Fax Number:
E-mail Address:
2. Agent/Consultant 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: Karen Hall
Company Affiliation: North Carolina State University
Mailing Address: Campus Box 7637
Raleigh, NC 27695-7367
Telephone Number: 919-515-8242 Fax Number: 919-515-7448
E-mail Address: karen [e-mail]
Updated 11/!/2005
Page 5 of 13
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 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: Tannery Branch UT to Little Creek Stream Restoration
2. T.I.P. Project Number or State Project Number (NCDOT Only): n/a
3. Property Identification Number (Tax PIN): 9741-67-4598 9741-67-3457
4. Location
County: Chatham Nearest Town: Pittsboro
Subdivision name (include phase/lot number):
Directions to site (include road numbers/names, landmarks, etc.): 159 W. Salisbury St.
Pittsboro. See vicinity map. Hwy 64 west to Pittsboro around courthouse continue on 64
Bus. Rectory Street is second street on right from courthouse
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35°43'17" ON 79°10'50" °W
6. Property size (acres):
7. Name of nearest receiving body of water: Little Creek to Robeson Creek
8. River Basin: Cape Fear
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://l12o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site currently is a vacant lot in town. It is mowed and
maintained by the landowner. The UT which was historically straightened and moved to the
Updated 11/1/2005
Page 6 of 13
edge of the valley, is severely incised and actively eroding See Appendices I throu her
more information.
10. Describe the overall project in detail, including the type of equipment to be used: The
existing stream will be relocated and reconnected to the adjacent floodplain using natural
channel design. The old channel will then be filled in and the surrounded floodplain planted
with native plants. Equipment will include 1 tracked excavator. See Appendices I through V
for more information.
11. Explain the purpose of the proposed work:- To increase the stability of the stream channel
reduce sediment inputs into the watershed handle stormwater inputs more effectively, create
terrestrial and aquatic habitat in an urban setting and use project for education and
demonstration purposes. See Appendices I through V for more information
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. N/A
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
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. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
Updated 11/1/2005
Page 7 of 13
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should 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. Provide a written description of the proposed impacts: The UT to Little Creek has
been channelized for approximately 267 linear feet This project will reconnect the stream to
the original floodplain and restore the stream to a natural dimensioned form pattern and
profile. The abandoned channelized reach will be filled with material excavated from the new
channel. The new channel will be 378 linear feet long. A plan drawing vicinity map and
photos are attached in Appendix I
2. Individually list wetland impacts. Types of 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
Wetland Impact
Site Number
indicate on ma
( p) Type of Impact Type of Wetland
(e.g., forested, marsh,
herbaceous, bog, etc.) Located within
100-year
Floodplain
(es/no Distance to
Nearest
Stream
linear feet Area of
Impact
(acres)

Total Wetland Impact (acres) 0
3. List the total acreage (estimated) of all existing wetlands on the property: N/A
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, 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. To calculate acreage- multinly length Y wirlth thrn rtiviilby Al S/' f)
Stream Impact
Number
indicate on ma
Stream Name
Type of Impact
Perennial or
Intermittent? Average
Stream Width
Before Im act Impact
Length
linear feet Area of
Impact
acres
UT-1 UT to Little Creek Relocation Intermittent 7 feet 267 -1

Updated 11/112005
Page 8 of 13
Total Stream Impact (by length and acreage) 267 -1
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill, excavation, dredging. flooding. drainm),P_ hnikhend-, eta
Open Water Impact
Site Number

(indicate on ma)
Name of Waterbody
(if applicable)
Type of Impact
Pact Type of Waterbody

(lake, pond, estuary, sound, bay,
ocean, etc.) Area of

Impact
(acres)

Total Open Water Impact (acres) p
6. List the cumulative impact to all Waters of the U.S. resulting frnm the nmir-ct-
Stream Impact (acres): -1
Wetland Impact (acres): p
Open Water Impact (acres): p
Total Impact to Waters of the U.S. (acres) p
Total Stream Impact (linear feet): 267
7. Isolated Waters
Do any isolated waters exist on the property? ? Yes ©No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
n/a
8. 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): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): n/a
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): n/a
Current land use in the vicinity of the pond: n/a
Size of watershed draining to pond: Expected pond surface area:
VII. Impact Justification,(Avoidance and Minimization)
Updated 11/1/2005
Page 9 of 13
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.
This proiect is designed to provide a net gain in improved water quality and aquatic function
for the stream and watershed. Measures will be taken to minimize potential sedimentation to
downstream waters including Little Creek and Robeson Creek In addition riding operations
and subsequent stabilization with erosion control matting will be expedited in order to minimize
the exposure time for the potential erosion and associated sedimentation
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 January 15, 2002, 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 NCEEP 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
littp://h2o.enr.state.nc.us/ncwet]ands/strmgide.htm].
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
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Updated 11/1/2005
Page 10 of 13
n/a-Mitigation not reauired
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at httn://112o.enr.state.nc.us/wm/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes X? No ?
2. 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 [phone] to review current thresholds for environmental documentation.
Yes ? No
3. 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 (required by DWQ)
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
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 213 .0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
Updated 11/1/2005
Page 11 of 13
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify V Yes ? No FRI
2. If "yes", 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.
I Zone* I Impact Multiplier Required
(souare feed Mitivntion
1 I I 3 (2 for Catawba)
1 2 1.5
Total I I I I
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or.0244, or.0260. n/a
XI. Stormwater (required by DWQ)
Describe impervious acreage (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. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. no impervious acreage
XII. Sewage Disposal (required by DWQ)
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.
No wastewater generated
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application? Yes . ? No
XIV. Cumulative Impacts (required by DWQ)
Updated 11/1/2005
Page 12 of 13
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.ne.us/ncwetlands. If no, please provide a short narrative description:
This is a stream restoration project that will improve downstream water quality
XV. 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).
none
19.20 a
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Updated 11/1/2005
Page 13 of 13
Appendix I
Tannery Branch Restoration Plan
Existing Conditions
An unnamed tributary, which will be referred to as Tannery Branch is a first order stream
located within the Robeson Creek Watershed. The Robeson Creek watershed, located
within the lower Haw River watershed (Cape Fear Subbasin 030604; HUC
03030002060030), lies within Chatham County, North Carolina and encompasses 28.6
square miles (see Figure 1). Located in the Piedmont physiographic region and lying
within the Carolina Slate Belt, this is a mostly rural and forested watershed with a small
urban component. The Robeson Creek watershed serves as a water supply source to
Jordan Lake, a major water supplier to the Triangle Area of North Carolina. Although
Robeson Creek is classified as a water supply watershed (WS-IV), nutrient sensitive
(NSW), and a class C waterbody, the creek is a 303(d) listed stream rated as Partially
Supporting with chlorophyll a violations and habitat degradation in the lower stream
segment in and above its confluence with the Haw River arm of Jordan Lake, and
Partially Supporting in the upper segment with impaired biological communities
throughout most of the stream reach (SR 2159 to upstream of mouth)(Cape Fear River
Basinwide Water Quality Plan, August 2000).
X.. Ns11 ?.Jn
if „ `.1 Vie. ! %
Legend
J ? Ty ' ,•
i???r? \`I :? ,J• - r ( Robeson Creek
Ma;or Roads
\ 1 _ ?• ??? ? 1 r ?? Town Limits
1 A
Robeson W atershed
J ,
Figure 1: Robeson Crcek Watershed location.
Tannery Branch is located in an established neighborhood in Pittsboro (see Figure 2) and
runs through a vacant, grassed lot. The watershed is dominated by roads, houses, a
Tannery Branch
dry

i
Figure 2: Tannery Branch vicinity map.
T Created by: NCSU Water Quality Group Project Construction Area
cemetery and some commercial development. It drains approximately 13 acres (0.02
square miles), 50 percent of which is impervious surface in the form of paved parking
lots. The remaining parcels are primarily mowed lawns within the residential area.
Soils are Georgeville which are deep and well drained. The primary water source is an
underground spring originating under Salisbury Street. During storm events, there are
water inputs into the existing channel from curb and gutter systems within the area. The
existing channel is incised and shows evidence of historically being ditched, straightened,
and moved from the valley center. Continual erosive forces are downcutting this channel
and undermining Rectory Street at the culvert (see Photo 1). The existing channel
classifies as a Rosgen E4 stream with an Entrenchment Ratio of 2.4, a slope of 0.029 and
a sinuosity of 1.1 (Appendix I1). The channel is deeply incised with a Bank Height Ratio
of 1.9. Thus, the bankfull stage is not at the top of bank. If the stream downcuts by only
0.3 feet, it will classify as a Rosgen G4 channel. A small bankfull bench was identified in
the existing gully and a bankfull cross-sectional area of 5 square feet was measured (see
Photo 2). The watershed area is significantly smaller than any streams surveyed for the
development of the Piedmont Urban or Rural Regional Curves. The channel has a
uniform riffle/run bed with vertical streambanks. Very few trees exist along the current
channel; however it is lined with the invasive exotic plant Chinese privet (Ligustrum
sinense). The surrounding riparian area is mowed lawn on either side of the channel (see
Photo 3).
_..:--.. v.
Photo 1: Rectory Street culvert with erosion.

Photo 2: Bankfull bench in incised channel. '•.
Photo 3: Tannery Branch on left and valley in center.
Restoration Approach
The restoration will involve filling the existing 267 feet of channel that is approximately
7 feet wide and 2.7 feet deep and replacing this incised channel with a meandering E
stream (see Figure 3 and Appendix III). The reference channel for the restoration is a
tributary to Middle Creek located near the Town of Holly Springs. A design bankfull
cross-sectional area of 4 square feet was selected in order to have water access the
floodplain at flows slightly below the estimated bankfull discharge. This approach is
intended to reduce the stress on the newly excavated streambanks that will have little
vegetation during the first year following project construction. The new channel will be
378 feet long, 7 feet wide and will have a mean and max riffle depth of 0.6 and 0.9 feet,
respectively. The new stream channel will have a bank height ratio of 1, an entrenchment
ratio of 10, a sinuosity of 1.5 and a slope of 0.02 (Appendices III, IV, and V). A large
boulder basin will be constructed at the head of the project in order to dissipate the
energy of two stormwater outfalls that form the head of the stream reach. Boulder cross-
vane structures will be used for grade control, pool formation and to create steps in the
channel in order to reduce the riffle slopes in the channel.
Native vegetation will be planted within the riparian area, extending out between 20 to 40
feet on either side of the channel. Table 1 lists plant species to be used. A combination of
container trees, shrubs, and herbaceous plants will cover the entire riparian area. Invasive
exotic vegetation will be treated prior to and after construction of the new channel.
Monitoring and maintenance will continue for several years following construction.
Scientific Name Common Name
Benda ni ra River birch
Plalanus occidentalis Sycamore
uercus michauxii Swam chestnut oak
uercus pagoda Cherr bark oak
Lindera benzoin S icebush
Alnus serrulata Tag alder
Sor hastrun: nutans Indian grass
Panicum vir atom Switch rass
Lobelia cardinalis Cardinal flower
Table 1. Native permanent plants to be installed.
All sediment and erosion control laws will be adhered to. The new channel will be
constructed in the dry. Temporary cover in the form of brown top millet will be
immediately applied at 30 lbs/acre immediately following construction activities. Straw
mulch will be applied on top of newly seeded floodplain. Coir matting will be applied
along banks from toe slope to top of bank.
Road
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? T
ON
ANNERY CREEK FESTC67Ai)
AT JANE RILE RESIDENCE
a 1l i •?\?? f:?,+r
PfrTSOOr:D, NC
a e ? --- --
Design Plan View ----
Figure 3. Tannery Branch restoration plan view.
Appendix II
Existing Cross Sections: Tannery Branch
Tannery Creek Riffle Cross-Section
Point
-------------- Station
---------------- Offset
-------------- Elevation Description
------------------------------
-----
117 0 0 98.53 xsl
116 5.59 -0.1348 99.17 xsl Wetted P Width
115 6.38 -0.0103 97.7 xs1-BKF
114 8.64 -0.0617 97.06 xsl 2.3 2.26
113 8.92 -0.0315 96.5 xsl 0.6 0.28
112 10.05 -0.0413 96.39 xsl 1.1 1.13
111 11.85 0.0284 96.27 xsl 1.8 1.8
added 12.3 97.7 1.5 0.440827
110 12.67 -0.0947 98.93 xsl 7.4
109 20 0 99.39 xsl
Depth Ave Depth Area Bankfull Width 5.9
0 Bankfull Area 5.2
0.64 0.32 0.7 Average Depth 0.9
1.2 0.92 0.3 Max Depth 1.4
1.31 1.255 1.4 W/D 6.7
1.43 1.37 2.5 2'Dmax 2.9
0 0.715 0.3 Floodprone Elev 99.1
5.2 Floodprone Width 14.4
ER 2.4
Rosgen Class E
Dtob 2.66
BHR 1.9
Tannery Riffle Cross-Section
100

99
5
.
99

v 98
5
.
c
.0 98

97
5
.
w
97

96
5
.

96
0 5 10 15 20 25
Station (ft)
Tannery Creek Pool Cross-Section
Point .
-------------- Station
--------------- Offset .
---------------- Elevation Description
------------------------------

118
0
0
97.13 xs2 -----
119 7.23 0.0248 96.87 xs2
120 8.67 0.0421 95.69 xs2 Width
121 9.81 0.0284 94.7 xs2-BKF
122 12.67 -0.2779 94.36 xs2 2.86
123 12.87 0.1402 93.21 xs2 0.2
124 14.26 0.0854 93.11 xs2 1.39
125 15.84 -0.0916 93.51 xs2 1.58
16.5 94.7 BKF 0.6375
126 16.59 0.0409 94.91 xs2
127 17.4 0.2283 95.45 xs2
128 18.04 0.0777 96.77 xs2
129 19.37 0 97.31 xs2
Depth Ave Depth Area
0 0 0
0.34 0.17 0.4862
1.49 0.915 0.183
1.59 1.54 2.1406
1.19 1.39 2.1962
0 0.595 0.3793125
5.3853125
Bankfull Width 6.7
Bankfull Area 5.4
Average Depth 0.8
Max Depth 1.6
W/D 8.3
Tannery Pool Cross-Section
98
97
5
.
97 ---
96
5
.
96
5
a 95
.
Cu 95 -
Q 94
5
.
94

93.5
93
92.5
0 5 10 15 20 25
Station (ft)
Appendix III
Design Table: Tannery Branch

Tannery Creek Design Summary Trib. To Middle
Creek
Tannery Creek
Bidelspach/Doll Existing Design
StreainT e E E E
Drainage Area (acres) 0.09 0.02 0.02
Bankfull Cross-Sectional Area (Abkf) 6.7 5.2 4
Bankfull Width (Wbkf) 7.8 5.9 7
Bankfull Mean Depth (Dbkf) 0.9 09 0.6
Width/Depth Ratio 8.7 6.6 12
Bankfull Maximum Depth (Dmax) 1.4 1.4 0.9
Max Riffle Depth Ratio (Dmax/Dbkf) 1.6 1.8 1.5
Max Depth Top of Bank (DTOB) 1.4 2.7 0.9
Bank Height Ratio (BHR) 1.0 1.9 1
Bankfull mean velocity (Vbkf) 2.2 4.8 3.1
Bank-full Discharge (Qbkf) 14.7 24.8 12.2
Width of Flood Prone Area (Wfpa) 150 14.4 70
Entrenchment Ratio (Wfpa/Wbkf) 19.2 1.3 10.1
Min Meander Length (Lm) 28.5 n/a 25.6
Max Meander Length (Lm) 64.8 n/a 57.5
Min Meander Length Ratio (Lrrv bkf) 3.7 ii/a 3.7
Max Meander Length Ratio (Lrn[Wbkf) 8.3 n/a 8.3
Min Radius of Curvature (Rc) 7 n/a 10.4
Max Radius of Curvature (Rc) 18.5 n/a 16.6
Min Radius of Curvature Ratio (Rc/Wbkf) 0.9 n/a 1.5
Max Radius of Curvature Ratio (RcAVbkf) 2.4 n/a 2.4
Min Belt Width (Wblt) 19 n/a 16.6
Max Belt Width (Wblt) 24.7 n/a 22.2
Min Meander Width Ratio (Wblt/Wbkf) 2.4 n/a 2.4
Max Meander Width Ratio (Wblt/Wbkf) 3.2 n/a 3.2
Sinuosity (K) 1.5 1.1 1.55
Valley Slope 0.0162 0.0287 0.0205
Avg. Slope 0.0056 0.026 0.013
Min Riffle Slope (Srif) 0.023 n/a 0.020
Max Riffle Slope (Srif) 0.104 n/a 0.033
Min Riffle Slope/Ave. Slope (Sriff/Save) 4.1 n/a 1.5
Max Riffle Slope/Ave Slope (Sriff/Save) 18.6 n/a 2.5
Min Riffle Length Lriffle 1.4 n/a 6.9
Max Riffle Length Lriffle 6.8 n/a 13.9
Min Riffle Length/Bankfull Width (Lrif/Wbkt 0.2 n/a 1
Max Riffle Length/Bankf ill Width (Lrif/Wbk 0.9 n/a 2
Min Pool Slope (Spool) 0.0000 0.0 0
Min Pool Slope Ratio (Spool/Savg) 0.000 0 0
Min Pool Depth (D pool) 2.8 1.6 1.7
Max Pool Depth (Dpool) 2.8 1.6 2.3
Min Pool Depth Ratio (Dpool/Dbkf) 3.1 1.8 3
Max Pool Depth Ratio (Dpool/Dbkf) 3.1 1.8 4
Pool Area (Apool) 6.7 5.4 5.6

Tannery Creek Design Sununary Trib. To Middle
Creek
Taimery Creek
Bidelspach/Doll Existing Design
Pool Area Ratio (Apool/Abkf) 1.0 1.0 1.4
Min Pool Length (Lpool) .11.7 24 14
Max Pool Length (Lpool) 26.4 34 28
Min Pool Length Ratio (L ool/Wbkf) 1.5 4.1 2
Max Pool Length Ratio (Lpool/Wbkf) 3.4 5.8 4
Pool Width (Wpool) 10.3 9.8 10.4
Pool Width Ratio (Wpool/Wbkf) 1.3 1.7 1.5
Min Pool/Pool Spacing (p-) 17.4 n/a 14
Max Pool/Pool Spacing (p-p) 57.3 n/a 48
Min Pool Spacing Ratio (p- /VVbkf) 2.2 n/a 2
Max Pool Spacing Ratio (p-p/VVbkf) 7.3 n/a 7
1. Particle Size Distribution of Channel
d16 0.1 0.1 0.1
d35 1.1 4.7 4.7
d50 7.3 14.1 14.1
d84 27.9 61.4 61.4
d95 38.4 92.5 92.5
Appendix IV
Pavement/Subpavement Sample: Tannery Branch
Table 1: Tannery Pavement/Subpavement Sample
Pavement Seive Size Sample Wt.
mm grams % of total Cumulative %
Medium Sand and Smaller <0.5 5 0.2 0.2
Course Sand 0.5-1.0 8 0.3 0.4
Very Course Sand 1.0-2.36 17 0.6 1.0
Very Fine Gravel 2.36-4.75 11 0.4 1.4
Fine Gravel 4.75-6.3 7 0.2 1.7
Medium Gravel 6.3 - 16 81 2.8 4.5
Course Gravel 16 - 31.5 136 4.7 9.2
Very Coarse Gravel 31.5-45 337 11.7 20.8
Very Coarse Gravel 45-64 127 4.4 25.2
Small Cobble 64-90 1677 58.0 83.3 75.1 =d50
Small Cobble 98 483 16.7 100.0
Total 2889
Subpavement Seive Size Sample Wt.
mm grams % of total Cumulative %
Medium Sand and Smaller <0.5 158 5.5 5.5
Course Sand 0.5-1.0 255 8.8 14.3
Very Course Sand 1.0-2.36 387 13.4 27.7
Very Fine Gravel 2.36-4.75 364 12.6 40.3
Fine Gravel 4.75-6.3 179 6.2 46.5
Medium Gravel 6.3 - 16 723 25.0 71.5 7.7 =d50
Course Gravel 16 - 31.5 381 13.2 84.7
Very Coarse Gravel 31.5-45 156 5.4 90.1
Very Coarse Gravel 46 91 3.1 93.3
Small Cobble 64-90 0 0.0 93.3
Total 2694
Appendix V
Entrainment Calculation Form: Tannery Branch
ENTRAINMENT CALCULATION FORM
-
Stream: Tanner Creek 77 R
each- Pittsboro, Pile Residence
Team: Doll & Blackwell Date: Mar-06
Information Input Area
35 D50 Riffle bed material D50 (mm)
12 D?so Bar sample D50 (mm)
46.0 D; Largest particle from bar sample (mm) 0.15 (feet) 304.8 mm/foot
0.013 Se Existing bankfull water surface slope (ft/ft)
0.6 de Existing bankfull mean depth (ft)
7 Wbk, Existing or Design Bankfull Width
8.2 P Wetted Perimeter of Riffle Cross Section (ft)
4 A Area of Riffle Cross Section (ft)
0.49 R Hydraulic Radius of Riffle Cross Section (ft)
1.65 gs Submerged specific weight of sediment

Calculation of Critical Dimensionless Shear Stress
2.92 DsoVso If value is between 3-7 Equation 1 will be used: t c; = 0.0834(D50/D A50)-0.872
1.31 D/D50 If value is between 1.3-3.0 Equation 2 will be used: t -0.11117
0.0328 t C; Critical Dimensionless Shear Stress Equation used: 2
0.0301 Critical Dimensionless Shear Stress Equation used: 2
Calcu lation of Bankfull Mean Depth Required for Entrainment of Largest Particle in Bar Sample

0.63 dr Required bankfull mean depth (ft) d' = t °'gSD'
S.
0.60 de Existing bankfull mean depth (ft)

Calculation of BKF Water Surface Slope Required for Entrainment of Largest Particle in Bar Sample

0.0136 Sr Required bankfull water surface slope (ft) S` _
t c,gSDi de
0.0130 Se Existing bankfull water surface slope (ft)

Sediment Transport Validation
0.40 Bankfull Shear Stress t, =gRS (lb/ft2) where the Density of water = g = 62.4 Ibs/ft3
30(15-60) Moveable particle size (mm) at bankfull shear stress (predicted by Shields Diagram)
0.6 Predicted shear stress required to initiate movement of D; (mm) (see Shields Diagram)
Note: If available bankfull shear stress exceeds D100 of bed, degradation potential exists.