20041200 Ver 1_COMPLETE FILE_20040713

Michael F.
William G. I
North Carolina Department of Environment and P
Alan W. Klime
Division c
Coleen H. Sullins, I
. Division o,
August
DW Q#
Cabarru;
Mr. Branson Patch
B. L. Patch and Associates, Inc.
C/O HARP
P.O. Box 655
Newell, NC 28126
APPROVAL of 401 Water Quality Certification with Additional Condition
Dear Mr. Patch:
You have our approval, in accordance with the attached conditions and those listed below, to impact 11
linear feet of stream bank and stream in order to stabilize the bank of Three Mile Branch located adjacent tc
Stonebridge Townhomes in Cabarrus County, as described in your application received by the Division of V1i
Quality (DWQ) on July 13, 2004. After reviewing your application, we have determined that this project is
covered by Water Quality General Certification Number 3399, which can be viewed on our web site at
http://h2o.enr.state.nc.us/ncwetlands. This General Certification allow you to use Nationwide Permit Numbe
and/or 27 when it is issued to you by the U.S. Army Corps of Engineers. Please note that you should get an,
other federal, state or local permits before you proceed with your project, including (but not limited to) Sediml
and Erosion Control, Non-Discharge, and Water Supply Watershed.
The above noted certification will expire when the associated 404 permit expires unless otherwise specil
in the General Certification. This approval is only valid for the purpose and design that you described in your
application. If you change your project, you must notify us in writing, and you may be required to send us a r
application for a new certification. If the property is sold, the new owner must be given a copy of the Certificc
and approval letter; and is thereby responsible for complying with all conditions.
For this approval to be valid, you must follow the conditions listed in the attached Certification, as well a.,
the additional conditions listed below:
1. According to the application, the stream bank will be stabilized utilizing bio-engineering techniques and native
vegetation. The use of riprap or other hard stabilization measures is not allowed in the streambed, unless
specifically approved by the Division of Water Quality.
2. Measures must be taken to prevent erosion on the east side of Three Mile Branch.
3. Upon completion of the project, the Applicant shall complete and return the enclosed "Certificate of
Completion" form to notify NCDWQ when all work included in the 401 Certification has been completed. The
responsible party shall complete the attached form and return it to the 401/Wetlands Unit of the NC Division
of Water Quality upon completion of the project.
N""of?e llttCarolina
dvatura!!y 0AMR
ENR
N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (http://h2o.enr.state.nc.us/ncwetlands)
Customer Service #: 1-877-623-6748
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3 80ed
MEMORANDUM
TO: John Dorney Regional Contact:
Non-Discharge Branch WO Supervisor:
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Stonebridge Townhomes Bank Restoration c/o Patch County Cabarrus
Project Number 04 1200 County2
Recvd From APP Region Mooresville
Received Date 7/13/04 Recvd By Region
Project Type bank stabiliation
Certificates Stream
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req.
F77 -F ©Y O N F__ 13-17-97 F-c 7--30.71. F_ F-
Mitigation Wetland
MitigationType Type Acres Feet
Is Wetland Rating Sheet Attached? 0 Y 0 N Did you request more info? 0 Y 0 N
Have Project Changes/Conditions Been Discussed With Applicant? 0 Y 0 N
Is Mitigation required? 0 Y 0 N Recommendation: 0 Issue 0 Issue/Cond 0 Deny
Provided by Region: Latitude (ddmmss) 35.4167 Longitude (ddmmss) 80.5712
Comments:
cc: Regional Office
Central Office Page Number 1
Along Three Mile Branch
Cabarrus County, North Carolina
Joint Application Form and Supporting Documentation for
NATIONWIDE PERMITS THAT REQUIRE NOTIFICATION
TO CORPS OF ENGINEERS
Prepared For: 1210
B.L. Patch and Associates, Inc.
Bransen Patch, President WETLANDS/ 401 GROUP
2409-B Plantation Center Dr.
Matthews, NC 28105 JUL 1 3 2004
. C/o Mr. Jim Matthews WATER QUALITY SECTION
Habitat Assessment and Restoration Program
P.O. Box 655
Newell, NC 28126
Prepared By:
Habitat Assessment and Restoration Program
P.O. Box 655
Newell, NC 28126
Leonard S. Rindner, PWS
Environmental Planning Consultant
3714 Spokeshave Lane
Matthews, NC 28105
[phone]
Date : 7/2004
Office Use Only: Form Version May 2002
Page 1 of 9
USAGE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1. Check all of the approval(s) requested for this project:
X Section 404 Permit ? Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
X 401 Water Quality Certification - 3 copies
2. Nationwide, Regional or General Permit Number(s) Requested: 13 or 27
3. If this notification is solely a courtesy copy because written approval for the 401 Certification is
not required, check here: ? (courtesy copy to Mooresville Regional Office DWQ - Alan
Johnson - not sent to DWQ Central Office in Raleigh)
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), 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: ?
H. Applicant Information
1. Owner/Applicant Information
Name: Mr. Branson Patch - B.L. Patch and Associates, Inc.
Mailing Address: c/o HARP
P.O. Box 655
Newell, NC 281,26
Telephone Number: 704-687-4061
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: Leonard S. Rindner, PWS
Company Affiliation.: Environmental PIggpigg Consultant
Mailing Address: 3714 Spokeshave Lane
Matthews NC 28105
Telephone Number: 704 846 0461 Fax Number: 704 847 0185
E-mail Address: Irindnergcarolina rr com
III. Project Information
Page 2 of 9
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: Bank Restoration at Stonebridge Townhomes - Three Mile Branch
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN):
4. Location
County: Cabarrus Counter Nearest Town: Concord
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.):
Near Intersection of Hwy 136 and $ranchview Drive - see attached location map
5. Site coordinates, if available (UTM or Lat/Long): 35.4167N, 80.5712W Concord
QMad (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): Stream Bank on property - see attached plans
7. Nearest body of water (stream/river/sound/ocean/lake): Three Mile Branch
8. River Basin: Yadkin
(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: Develgped townhomes adjacent to severely eroded creek.
10. Describe the overall project in detail, including the type of equipment to be used:
The?roposal is to stabilize the creek bank to to severe erosion, The stream bank has eroded
to within 15 feet to the building foundation. See February 16, 2004 Memorandum from
Page 3 of 9
HARP to USACE for more detailed information and December 2003 Analysis and
Documentation by Randall D. Forsythe, Ph.D.
11. Explain the purpose of the proposed work:
Restore and stabilize approximately 185 linear of stream bank to 1999 conditions per Bank
Restoration at StonebridgLe Townhomes - Three Mile Branch December 2003 - attached.
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.
See attached memorandum February 16, 2004 from Jim Matthews and Randy Forsythe to Steve
Chapin for project history and background.
IV. 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.
Additional impacts are not expected
V. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts: The proposed plan proposes to restore
and stabilize approximately 185 linear feet of stream bank. - see attached plans for specific
documentation and plans - attached.
Page 4 of 9
2. Individually list wetland impacts below: Wetland impacts are not expected
Wetland Impact
Site Number
indicate on ma)
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
es/no) Distance to
Nearest Stream
(linear feet
Type of Wetland***

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at h=://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only),
List the total acreage (estimated) of all existing wetlands on the property: Approx.0.10 acres
Wetlands and Surface Waters)
Total area of wetland impact proposed:_
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
indicate on ma)
Type of Impact* Length of
Impact
linear feet
Stream Name* * Average Width
of Stream
Before Impact Perennial or
Intermittent?

lease specify)
1 NWP#13 or 27 185 If Three Mile Branch +40' Per.

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated np-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usas.eov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com
www.mgpguest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: approximately 183 If
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below: NA
Page 5 of 9
Open Water Impact
Site Number
indicate on xna
Type of Impact* Area of
Impact
(acres)
Name Wat)
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging,
flooding, drainage, bulkheads, etc.
5. Pond Creation - NA
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): X uplands, if applicableo stream]
wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): .
Size of watershed draining to pond: Expected pond surface area:
VI, Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The scopp of the project is required to stabilize and restore the creek bank to prevent ground
failure along the building foundations. See attached plans.
Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
Page 6 of 9
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
ht!p://h2o.enr.state.nc.us/ncwetiands/strmgide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
The Proposed plan includes toe stabilization aeo»cell type mats to be filled with structural soil for
planting and live s ina of the creek banks - see attached glans for additional detail.
Plant Selection List
Itea virginica - Silky Willow
Corpus amomum- Silky Dogwood
Cephalanthus occidentalis - Buttonbush
Sambucus canadensis - Elderberry
Salix nigra - Black Willow
** No more than 50% of the materials required to be installed shall be of one species At least three varieties shall be
utilized, unless approved otherwise.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http•//h2o.enr.state.nc.us/M/index.htm, If use of
the NCWR.P is proposed, please check the appropriate box on page three and provide the
following information: NA
Amount of stream mitigation requested (linear feet): NA
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Page 7 of 9
Amount of Non-riparian wetland mitigation requested (acres):.
Amount of Coastal wetland mitigation requested (acres):
VII. Environmental Documentation (required by DWQ) NA
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No X
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 ?
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 ?
VIII. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) NA
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.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify V
Yes ? No ? If you answered "yes",- provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(s uare feet Multiplier Required
Mitigation
1 3
2 1.5
Total
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
Page 8 of 9
IX. Stormwater (required by DWQ) NA
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
X. 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.
Municipal System
XI. Violations (required by DWQ) NA
Is this site in violation of DWQ Wetland Rules (15A NCAC 211,0500) or any Buffer Rules?
Yes ? No X
Is this an after-the-fact permit application?
Yes ? No X
XIL 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).
Due to the severe erosion, the owner hopes to move forward immediately based on approval to
prevent am ae to the foundations of the buildings.

Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
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HABITAT
ASSESSMENT AND
RESTORATION
PROGRAM IIVC.1--
To: Steve Chapin
USACOE, Asheville Field Office
JAMES F. MATTHEWS, Ph.D.
T. LAWRENCE MELLICHAMP, Ph.D.
P.O. Box 655
Newell. NC 28126
[phone]
[phone]
fax : (704) -687-3128
cell : [phone]
Dater February 16, 2004
From: Jim Matthews and Randy Forsyth
Subject: Bank Restoration at Stonebridge ondos, Threemile Branch, Concord, NC
We are sending this document for your comment as to the applicability of using
NW Permit 27 to effect bank restoration at a site in Concord NC along Threemile Branch.
It is our understanding that you visited the site (Stonebridge Condominium development,
off of Hwy 136; Branchview drive, Concord) in late October or early November with Len
Ridner and saw the extent of erosion along a +/- 200 foot section of the west bank of
Threemile Branch. Perhaps Len also showed you at the time the zones of upslope
incipient ground failure that are within 15 feet or so of the nearest condo foundation
(shown in attached photographs). Should the bank restoration proposed and described
herein be permissible under NW Permit 27, we will recommend to the owner that the
work commence immediately to limit future damages to nearby foundations. The winter
rains and storms could trigger rotational bank failure and if so the creek bank will be 15-
18 feet in height and encroaching into the zone of foundation support for the nearest
condo unit. Below we outline the evidence for an out-of-regime stream channel along
this zone, and then briefly describe our intended plans for bank restoration.
Attached to this memorandum are maps, cross sections, field photographs, and
design schematics for the zone of bank failure. There are five lines of evidence that this
section of the west bank along Threemile Branch has become unstable, producing an
enlarged cross section of the creek so it now is out-of-regime (for its bankfull flow
condition).
First, it is clear from visual inspection that the banks below the condo units are in
a state of rapid erosion and mass wasting with incipient tree and bank failure.
Second we have carefully mapped and compared current conditions to the 1999
site development conditions (earlier mapping of King Engineering of Concord) to define
the extent of retreat of the west bank since 1999. This is outlined in the attached plan
views. The comparison shows a similar magnitude for the retreat of top-of-bank as the
toe-of-bank.
Habitat Analysis, Endangered Plant Studies, Restoration of Habitats, Wetland Mitigation, Monitoring
Third, we have run cross sections above, within, and below the zone of aggressive
bank erosion, and comparison of these sections show approximately 75 sq.ft. of
enlargement.
Forth, we have taken the Urban NC Piedmont regime equations (Doll, et.al.,
2000; presented in the NCSU Stream Restoration Short Course Compendium) and
compared observed cross section conditions to those predicted from the Urban regime
relationships, and find that there is an excess of 65 sq.ft. below the bankfull stage.
Fifth, when streams start to enlarge on one bank the channel loses capacity to
transport fine sediment through the zone of enlargement and tell-tale consequences are
produced. In this case a lateral sand bar (opposing bank) and medial bar have started to
form in the enlarged zone (shown in attached maps). Bar formation, unfortunately, will
displace the water to the toe of the eroding bank, and increase the rates of bank erosion in
the future.
These lines of evidence support the conclusion that this section of the channel is
out-of-regime due to bank erosion and channel enlargement and needs to be restored in
the near future to curtail additional impacts.
Our recommendation is to use Nationwide Permit 27 to restore the bank back to its 1999
position, and bring the cross section area of the channel back in line with that observed
up and down stream of this zone. Our intent is to use bioengineering concepts to restore
a vegetated bank along approximately 200 feet of the west bank. We propose to use a
combination of geo-grid products like GEOWEB (or TERRACELL) along with structural
fill and soil to restore the bank and cross section area of the creek. Live staking with
riparian species (e.g. silky willow) will finish out the bank, and provide long term
protection. Two rock vanes are proposed to be installed to lessen bank velocities in the
restoration zone, principally to provide some relief to the bank during the period of plant
establishment. One row of footer boulders is proposed along the toe of the restored bank.
Plan and cross section views of the intended restoration are attached.
We will appreciate your earliest response to allow activity to begin. It has taken
quite a bit of time for us to provide the analysis and data we felt you would need to
review our proposal. It has also taken some time for the owner to arrange for the
financing for the project. Hopefully we have provided what you need. If there are
questions, please do not hesitate to contact Len (who has been furnished with a copy of
this request) or call Randy Forsythe [phone], or me.
Bank Restoration at Stonebridge Townhomes
Three Mile Branch - Concord
December 2003
Analysis and Documentation
Prepared by:
Habitat Assessment and Restoration Program, Inc
Randall D. Forsythe, Ph.D.
With Engineering Assistance By:
Bo Moorefield, P.E., Orion Engineering, PLLC
Mel Browning, P.E., Principal Geotechnical Engineer
MACTEC Engineering and Consulting, Inc.
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Stonebridge Condominium Development - Photos of Eroding West Bank along
HARP Stream Bank Restoration Project; 3 Mile Creek, Concord, NC Threemile Branch Dec. 2003
Photo #2 along west bank of Threemile Branch, looking south over zone of
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HARP I Stonebridge Condominium Development - I Photos of Eroding West Bank along
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STONEBRIDGE
John T. Soule, Lisa Gaffney 10-Oct-03
Cross Section #1
STA
(ft) BS(+) HI FS(-) Bad/Groun
d WATER DEPTH Water
Elevation Notes/Comments

in
It
It in
It in
Tam 5 7.5 105.63 100 To of S yeamore root
0 3 2 102.46 Right bank
5 3 3.75 102.31
10 3 1.75 102.48
15 3 1 102.54
20 2 11.75 102.65
25 2 10 102.79
30 3 0.5 102.58
35 3 5.5 102.17
36 3 6.25 102.10 To of Bank
38 4 2.75 101.40
40 5 6 100.13
41.5 6 11 98.71
43 8 6 97.13
45 9 7.5 96.00
47 10 6.75 95.06 Sand bar
49 10 6.75 95.06 Sand bar
51 10 7.75 94.98 Sand bar
53 10 7.75 94.98 Sand bar
55 10 8.5 . 94.92 Sand bar
57 11 2.5 94.42 Sand bar
59 11 7.75 93.98 Sand bar
60 11 9.25 93.85 Edge
62 11 11 93.71 2 93.88
64 12 1.25 93.52 4.75 93.92
66 12 4.25 93.27 7.75 93.92
68 12 3.25 93.35 6.25 93.88
70 12 1.5 93.50 4.5 93.88
70.8 11 9.25 93.85 Ed e
72 11 0 94.63
74 7 5 98.21
75.3 2 11.25 102.69
76 2 7 103.04
77 1 10.25 103.77
78 1 0.5 104.58
80 0 3.75 10531 To of Bank
82 0 8.5 104.92
84 1 0.25 104:60
86 1 6.25 104.10
88 1 6.5 104.08
9o 1 11 103.71
95 1 10.5 103.75
100 1 5.5 104.17
105 0 10.5 104.75 END
Edge of Parkin Lot Pavement 112 feet

NOTE: St e 0+00 to S ta 1+05 81 degrees

STONEBRIDGE
John T. Soule, Lisa Gaffney - 18-0d-03
Cross Section ##2
STA
ft)
BS(+)
HI
FS(-)
BWG droun
WATER DEPTH
ElevWater ation
Notes/Comments
ft in ft in ft in
TBM / 0 4.25 100.35 10D Right bank se cnr 2nd. conc. Patio
2 0 9.75 99.54
4 1 3.5 99.06
6 1 9.5 98.56
8 2 4 98.02
10 2 11.5 97.40
12 3 8.5 96.65
14 4 4 96.02
16 5 1 95.27
17 5 3.5 95.06 To of Bank
17.8 11 8.25 88.67
19 13 6 86.85
22 14 9.25 85.58 Edge
24 15 5.5 84.90 10.5 85.77 Thalwe
26 15 3.5 85.06 7 85.65
28 15 2.25 85.17 6.25 85.69
30 14 11.75 85.38 3.5 85.67
32 15 0.75 85.29 4.5 85.67
33.9 14 8.5 85.65 Ede Edna of sand bar
36 14 5 85.94 Sand bar
38 14 4 86.02 Sand bar
40 14 4 86.02 Sand bar
42 14 4.5 85.98 Sand bar
44 14 4.25 86.00 Sand bar
46 14 2.25 86.17 Sand bar
48 14 1.75 86.21 Sand bar
50 13 9.5 86.56 Sand bar
52 13 6 86.85 Sand bar
54 13 0 87.35 Sand bar
56 12 5.25 87.92
58 10 7.25 89.75
60 9 8 90.69
62 9 3 91.10
64 8 7.25 91.75
66 6 2.25 94.17 To of Bank
68 5 7 94.77
70 5 4.75 94.96
72 5 2.75 95.13
74 5 3.5 95.06
79 5 1.5 95.23
84 5 6.75 94.79
89 4 8.5 95.65
94 4 10 95.52 END

NOTE: S ta 0+00 to Ste 0+94 76 d reel

X-SEC i s 12.3 feet south of drainage ditch

TBM an d Sta 0+0 0 are the same and are the southeast comer of the second Patio d from the n orth

STONEBRMGE
John T. Soule, Lisa Gaffney - 18-Oct-03
Cross Section #3
A
(ft) BS(+) HI FS(-) Bed/Groun
d WATER DEPTH Water
Elevation Notes/Comments
ft in ft in ft in
TBM / 0 0 4.75 100.40 100 Right bank ne cnr 1st. conc. Patio
2 1 3.5 99.10
4 1 10.5 98.52
8 2 7.25 97.79
8 3 5.75 96.92
10 4 0.5 96.35
12 4 10.25 95.54
14 5 3 95.15
16 5 8.75 94.67
17 5 11.25 94.46 To of Bank
19 9 1 91.31
21 11 9.5 88.60
23 13 2.25 87.21 Edge of water under tree trunk
25 14 10.5 85.52 1.25 85.63
27 15 0.25 8538 5.25 85.81
29 15 2.75 85.17 8.25 85.85 Thalwe
31 14 11 85.48 4.25 85.83
33 14 9.5 85.60 2.75 85.83
35 14 11.25 85.46 4 85.79
37 14 9.25 85.63 2.25 85.81
37.7 14 7.25 85.79 Edna
39 14 8.5 85.69 Sand bar
41 14 4.25 86.04 Sand bar
43 14 1.75 86.25 Sand bar
45 14 0.25 86.38 Sand bar
47 14 2 86.23 Sand bar
49 13 3 87.15
51 12 4 88.06
53 11 4.75 89.00
55 9 8 90.73
57 8 8.75 91.67
59 8 1.75 92.25
61 7 3.5 93.10
63 .6 1.25 94.29
65 5 4.5 95.02
67 4 10 95.56
69 4 3.75 96.08 To of Bank
74 4 2.5 96.19
79 4 4.5 96.02
84 4 5.5 95.94
89 4 6.25 95.88
94 4 5.5 95.94
99 4 5 95.98 END

NOTE: Sta 0+00 t o Sta 0+99 76 d egrees

XSEC i s 26 feet north of drain a d itch

TBM an d Sta 0+0 0 are the same an d are the northeast comer of the first atio d fro m the north

STONEBRMGE
John T. Souie, Lisa Gaffney 18-Oct-03
Cross Section #4
Sft; BS(+) HI FS() drown WATER DEPTH ElevWater
ation
Notes/Comments
ft in ft in ft in
TBM 0 2.75 100.23 100 Right ban ne cnr 1 st. conc. Patio
0 3 4.75 96.83
5 3 9.5 96.44
10 4 1.75 96.08
15 4 7.75 95.58
20 4 9.75 95.42
25 5 1 95.15
30 5 0.5 95.19
34 5 5.25 94.79
36 5 8.5 94.52 To of Bank
38 6 2.5 94.02
40 7 1 93.15
7 10.25 92.38
8 10.75 91.33
12 1.75 88.08
V 12 9.5 87.44
13 7.75 86.58 Ed e
14 3.5 85.94 3 86.19 ri ra rubble
14 1.75 86.08 1.5 86.21 rip-rat), rubble
55 13 10.75 86.33 0 86.33 rip-rap, rubble
57 13 11.75 86.25 2 86.42 d ra rubble
59 14 2.25 86.04 4.5 86.42 ri ra rubble
61 13 11.5 86.27 1 86.35 rip-rap, rubble
63 14 3.5 85.94 2.75 86.17 rip-rap, rubble
65 14 5.75 85.75 3.5 86.04 rip-rap, rubble
67.4 14 8.25 85.54 5.5 86.00 Thalwe
69 14 7.5 85.60 4 85.94
71 10 0 90.23
73 8 11.75 91.25
75 8 9 91.48
77 8 2.5 92.02
79 7 5.5 92.77
81 6 4.25 93.88
83
1 5 9.25 94.46 To of Bank
85 5 10 94.40
87 5 10.25 94.38
89 5 8 94.56
91 5 5 94.81
96 5 1.5 95.10
101 4 10.25 95.38
106 4 8.25 95.54
111 4 5.75 95.75
113 4 1 96.15 END

NOTE: St e 0+00 to Ste 1+113 79 degr ees

X-SEC is 13.7 feet south of sewer pipe

TBM is th e northeast comer of the first do d fro m the north

' REEDY FORK TRIBUTARY
Cross-section.l
(Station 3+50)
STON EBRIDGE SIMPLE X-SECTIONS
X-SEC 248
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
Iftl Elevation Elevation
in
ft ft in ft in
_
TBM 1 0.5 591.28 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 6 10.25 584.43 BASELINE
24 6 2.75 585.05 TOP OF BANK
33.5 9 8 581.62 TOE OF BERM
38.4 10 2 581.12 TOP OF BERM
42.1 15 0.75 576.22 TOE OF SLOPE
49.9 15 9.75 575.47 EDGE OF WATER
64.1 16 2.25 .575.09 4.75 575.49 THALWEG
65.8 15 10 575.45 EDGE OF WATER
68.5 15 6 575.78 TOE OF SLOPE
73.2 6 8 584.62 TOP OF BANK
91 6 2.5 585.07 END
X-SEC 230
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(- ) Bed/Ground WATER DEPTH Water Notes/Comments
(ft1 Elevation Elevation
ft in ft in ft in
TBM 0 1.5 590.37 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 5 8.75 584.64 BASELINE
23.5 5 2 585.20 TOP OF BANK
27.4 8 3.75 582.05 TOE OF BERM
32.6 8 1.25 582.26 TOP OF BERM
40.5 14 11.5 575.41 TOE OF SLOPE / EDGE OF WATER
53.4 15 7 574.78 9.25 575.55 THALWEG
57.1 14 10 575.53 EDGE OF WATER
71 14 3.5 576.07 TOE OF SLOPE
76.5 5 5.5 584.91 TOP OF BANK
91 5 3.25 585.09 END
X-SEC 210
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
(ftl Elevation Elevation
ft in ft in ft in
TBM 0 1 590.32 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 5 0.25 585.30 BASELINE
21.4 5 3.25 585.05 TOP OF BANK
24 9 4.5 580.95 TOE OF BERM
31.6 14 8 575.66 TOE OF SLOPE / EDGE OF WATER
33 14 10.25 575.47 3.25 575.74 THALWEG
37.3 14 7 575.74 EDGE OF WATER
64.9 13 2.25 577.14 TOP OF BAR
68.6 14 7 575.74 EDGE OF WATER
72.6 15 6.5 574.78 11.5 575.74 THALWEG
74.6 14 7.25 575.72 TOE OF SLOPE / EDGE OF WATER
79.4 11 1.75 579.18 TOP OF BERM
86 10 6.25 579.80 TOE OF BERM
89.6 5 11.25 . 564.39 TOP OF BANK
91 5 9 584.57 END
X-SEC 190
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
Iftl Elevation Elevation
ft in ft in ft in
TBM 0 2.5 590.45 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 4 8.25 585.76 BASELINE
1
REEDY FORK TRIBUTARY
Cross-section I
(Station 3+50)
17.3 5 10 584.62 TOP OF BANK
30.7 14 7.75 575.80 TOE OF SLOPE / EDGE OF WATER
32.3 15 1 575.37 5.5 575.82 THALWEG
39 14 7.75 575.80 EDGE OF WATER
49.4 14 4.25 576.09 TOP OF BAR
53.9 14 6.25 575.93 EDGE OF WATER
57.9 14 11 575.53 5.5 575.99 THALWEG
65.1 14 6.25 575.93 TOE OF SLOPE / EDGE OF WATER
73 11 11 578.53 TOP OF BERM
87 12 0.25 578.43 TOE OF BERM
92 5 4.75 585.05 TOP OF BANK/ END
X-SEC 170
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
(ftl Elevation Elevation
ft in ft in It in
TBM 0 3.25 590.51 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 3 9.5 586.72 BASELINE
16.7 5 7.75 584.87 TOP OF BANK
20 12 4.5 578.14 TOE OF SLOPE
24.1 14 6.75 575.95 EDGE OF WATER
35.6 15 2.5 575.30 7.75 575.95 THALWEG
46 14 7 575.93 EDGE OF WATER
53.2 14 0.5 576.47 TOP OF BAR
62.1 11 3.75 579.20 TOE OF SLOPE (TOE OF BERM?)
67.3 5 5.25 585.07 TOP OF BANK
91 5 6.75 584.95 END
X-SEC 140
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
(ft) Elevation Elevation
ft in ft in ft in
TBM 0 5 590.66 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 3 7.5 587.03 BASELINE
9.8 5 11.75 584.68 TOP OF BANK
11.8 12 6.5 578.12 TOE OF SLOPE
15.4 14 9 575.91 EDGE OF WATER
17.8 16 0.25 574.64 1 3.25 575.91 THALWEG
26.9 14 9.25 575.89 TOE OF SLOPE / EDGE OF WATER
45 12 10.5 577.78 TOP OF BAR
50.6 9 10.75 580.76 TOP OF BERM
54.1 9 1.25 581.55 TOE OF BERM
61 5 2.5 585.45 TOP OF BANK
91 4 10.75 585.76 END
DO X-SEC # 2 0 4.75
DO X-SEC # 3 0 6.5
2
copy
Bank Restoration at Stonebridge Townhomes
Three Mile Branch - Concord
December 2003
04 1200
Analysis and Documentation
Prepared by:
Habitat Assessment and Restoration Program, Inc.
Randall D. Forsythe, Ph.D.
With Engineering Assistance By:
Bo Moorefield, P.E., Orion Engineering, PLLC
Mel Browning, P.E., Principal Geotechnical Engineer
MACTEC Engineering and Consulting, Inc.
WETLANDS/ 401 GROUP
JUL 1 3 2004
WATER QUALITY SECTION
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•
•
Stonebridge Condominium Development - Photos of Eroding West Bank along
HARP Stream Bank Restoration Project; 3 Mile Creek, Concord, NC Threemile Branch Dec. 2003
Photo #2 along west bank of Threemile Branch, looking south over zone of
incipient ground failure

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Bottom
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HARP I Stonebridge Condominium Development - I Photos of Eroding West Bank along
Stream Bank Restoration Project; 3 Mile Creek, Concord, NC Threemile Branch Dec. 2003
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Stonebridge Condominium Development - Cross Sections - Threemile Branch
HARP Stream Bank Restoration Project; 3 Mile Creek, Concord, NC Locations show on Planimetric Sheets Dec. 2003

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John T. Soule, Lisa Gaffney STONEBRIDGE 10-Oct-03
Cross Section #I
•
STA
(ft) BS(+) HI FS(-) Bed/Groun
d WATER DEPTH Water
Elevation Notes/Comments
ft in It in ft in
TBM 5 7.5 105.63 100 To of Sycamore root
0 3 2 102.46 Right bank
5 3 3.75 102.31
10 3 1.75 102.48
15 3 1 102.54
20 2 11.75 102.65
25 2 10 102.79
30 3 0.5 102.58
35 3 5.5 102.17
36 3 6.25 102.10 To of Bank
38 4 2.75 101.40
40 5 6 100.13
41.5 6 11 98.71
43 8 6 97.13
45 9 7.5 96.00
47 10 6.75 95.06 Sand bar
49 10 6.75 95.06 Sand bar
51 10 7.75 94.98 Sand bar
53 10 7.75 94.98 Sand bar
55 10 8.5 94.92 Sand bar
57 11 2.5 94.42 Sand bar
59 11 7.75 93.98 Sand bar
60 11 9.25 93.85 Edge
62 11 11 93.71 2 93.88
64 12 1.25 93.52 4.75 93.92
66 12 4.25 93.27 7.75 93.92
68 12 3.25 93.35 6.25 93.88
70 12 1.5 93.50 4.5 93.88
70.8 11 9.25 93.85 Edna
72 11 0 94.63
74 7 5 98.21
75.3 2 11.25 102.69
76 2 7 103.04
77 1 10.25 103.77
78 1 0.5 104.58
80 0 3.75 105.31 To of Bank
82 0 8.5 104.92
84 1 0.25 104.60
86 1 6.25 104.10
88 1 6.5 104.08
90 1 11 103.71
95 1 10.5 103.75
100 1 5.5 104.17
105 0 10.5 104.75 END
Edge of Parkin Lot Pavement 112 feet

NOTE: Sta 0+00 to Sta 1+05 8 1 degrees

0
John T. Soule, Lisa Garfiey STONEBRIDGE 18-Od-03
Cross Section k2
•
A
ft BS(+) HI FS(-) Bed/Groun
d WATER DEPTH Water
Elevation Notes/Comments
ft in ft in ' ft in
TBM ! 0 4.25 100.35 100 Right bank se cnr 2nd. conc. Patio
2 0 9.75 99.54
4 1 3.5 99.06
6 1 9.5 98.56
8 2 4 98.02
10 2 11.5 97.40
12 3 8.5 96.65
14 4 4 96.02
16 5 1 95.27
17 5 3.5 95.06 To of Bank
17.8 11 8.25 88.67
19 13 6 86.85
22 14 9.25 85.58 Ed e
24 15 5.5 84.90 10.5 85.77 Thalwe
26 15 3.5 85.06 7 85.65
28 15 2.25 85.17 6.25 85.69
30 14 11.75 85.38 3.5 85.67
32 15 0.75 85.29 4.5 85.67
33.9 14 8.5 85.65 Ede Ed a of sand bar
36 14 5 85.94 Sand bar
38 14 4 86.02 Sand bar
40 14 4 86.02 Sand bar
42 14 4.5 85.98 Sand bar
44 14 4.25 86.00 Sand bar
46 14 2.25 86.17 Sand bar
48 14 1.75 86.21 Sand bar
50 13 9.5 86.56 Sand bar
52 13 6 86.85 Sand bar
54 13 0 87.35 Sand bar
56 12 5.25 87.92
58 10 7.25 89.75
60 9 8 90.69
62 9 3 91.10
64 8 7.25 91.75
66 6 2.25 94.17 To of Bank
68 5 7 94.77
70 5 4.75 94.96
72 5 2.75 95.13
74 5 3.5 95.06
79 5 1.5 95.23
84 5 6.75 94.79
89 4 8.5 95.65
94 4 10 95.52 END

NOTE: Sta 0+00 t o Sta 0+94 76 d e roes

X-SEC is 12.3 fee t south of drainage ditch

TBM and Sta 0+0 0 are the same and are the s outheast corner of the second atio ad from the no rth

C,
John T. Soule, Lisa Gaffney STONEBRIDGE 18-Oct-03
Cross Section #3
•
S TA
g BS(+) HI FS(-) Bed/Groun
d WATER DEPTH Water
Elevation Notes/Comments
ft in ff in ft in
TBM / 0 0 4.75 100.40 100 Right bank ne cnr 1st. conc. Patio
2 1 3.5 99.10
4 1 10.5 98.52
6 2 7.25 97.79
8 3 5.75 96.92
10 4 0.5 96.35
12 4 10.25 95.54
14 5 3 95.15
16 5 8.75 94.67
17 5 11.25 94.46 To of Bank
19 9 1 91.31
21 11 9.5 88.60
23 13 2.25 87.21 Ede of water under tree trunk
25 14 10.5 85.52 1.25 85.63
27 15 0.25 85.38 5.25 85.81
29 15 2.75 85.17 8.25 85.85 Thalwe
31 14 11 85.48 4.25 85.83
33 14 9.5 85.60 2.75 85.83
35 14 11.25 85.46 4 85.79
37 14 9.25 85.63 2.25 85.81
37.7 14 7.25 85.79 Ed e
39 14 8.5 85.69 Sand bar
41 14 4.25 86.04 Sand bar
43 14 1.75 86.25 Sand bar
45 14 0.25 86.38 Sand bar
47 14 2 86.23 Sand bar
49 13 3 87.15
51 12 4 88.06
63 11 4.75 89.00
55 9 8 90.73
57 8 8.75 91.67
59 8 1.75 92.25
61 7 3.5 93.10
63 6 1.25 94.29
65 5 4.5 95.02
67 4 10 95.56
69 4 3.75 96.08 To of Bank
74 4 2.5 96.19
79 4 4.5 96.02
84 4 5.5 95.94
89 4 6.25 95.88
94 4 5.5 95.94
99 4 5 95.98 END

NOTE: Sta 0+00 to Sta 0+99 76 d rees

X-SEC is 26 feet north of drains a ditch

TBM and Ste 0+00 are the same and are the northeast corner of the first patio d from the north

•
John T. Soule, Lisa Gaffney STONEBRIDGE 18-Oct-03
Cross Section #4
•
STT BS(+) HI FS(-) a drown WATER DEPTH ElevWater ation Notes/Comments
ft in ft in ft in
TBM 0 2.75 100.23 100 Right bank ne cnr 1 st. conc. Patio
0 3 4.75 96.83
5 3 9.5 96.44
10
I 4 1.75 96.08
15 4 7.75 95.58
20 4 9.75 95.42
25 5 1 95.15
30 5 0.5 95.19
34 5 5.25 94.79
36 5 8.5 94.52 To of Bank
38 6 2.5 94.02
40 7 1 93.15
42 7 10.25 92.38
44 8 10.75 91.33
45 12 1.75 88.08
47 12 9.5 87.44
49 13 7.75 86.58 Edge
50.6 14 3.5 85.94 3 86.19 rip-rap, rubble
53 14 1.75 86.08 1.5 86.21 rip-rap rubble
55 13 10.75 86.33 0 86.33 rip-rap, rubble
57 13 11.75 86.25 2 86.42 rip-rap, rubble
59 14 2.25 86.04 4.5 86.42 ri -ra rubble
61 13 11.5 86.27 1 86.35 rip-rap, rubble
63 14 3.5 85.94 2.75 86.17 Op-rap, rubble
65 14 5.75 85.75 3.5 86.04 ri -ra rubble
67.4 14 8.25 85.54 5.5 86.00 Thatwen
69 14 7.5 85.60 4 85.94
71 10 0 90.23
73 8 11.75 91.25
75 8 9 91.48
77 8 2.5 92.02
79 7 5.5 92.77
81 6 4.25 93.88
83 5 9.25 94.46 To of Bank
85 5 10 94.40
87 5 10.25 94.38
89 5 8 94.56
91 5 5 94.81
96 5 1.5 95.10
101 4 10.25 95.38
106 4 8.25 95.54
111 4 5.75 95.75
113 4 1 96.15 END

NOTE: St a 0+00 to S ta 1+113 79 degr ees

X-SEC is 13.7 feet s outh of se wer Pipe

TBM is th e northeas t corner of the first Pa tio ad fro m the north

0
REEDY FORK TRIBUTARY
Cross-section 1
(Station 3+50)
17.3 5 10 584.62 TOP OF BANK
30.7 14 7.75 575.80 TOE OF SLOPE / EDGE OF WATER
32.3 15 1 575.37 5.5 575.82 THALWEG
39 14 7.75 575.80 EDGE OF WATER
49.4 14 4.25 576.09 TOP OF BAR
53.9 14 6.25 575.93 EDGE OF WATER
57.9 14 11 575.53 5.5 575.99 THALWEG
65.1 14 6.25 575.93 TOE OF SLOPE / EDGE OF WATER
73 11 11 578.53 TOP OF BERM
87 12 0.25 578.43 TOE OF BERM
92 5 4.75 585.05 TOP OF BANK / END
X-SEC 170
John T. Soule, Steve Harville
7-Nov-03
STA
(ft) BS(+)
HI
FS
(-) Bed/Ground
WATER DEPTH Water
Notes/Comments
Elevation Elevatio n
REEDY FORK TRIBUTARY
Cross-section I
(Station 3+50)
STONEBRI DGE SIMPLE X-SECTIONS
X-SEC 248
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
(ft) Elevation Elevation
ft in ft in ft in
TBM 1 0.5 591.28 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 6 10.25 584.43 BASELINE
24 6 2.75 585.05 TOP OF BANK
33.5 9 8 581.62 TOE OF BERM
38.4 10 2 581.12 TOP OF BERM
42.1 15 0.75 576.22 TOE OF SLOPE
49.9 15 9.75 575.47 EDGE OF WATER
64.1 16 2.25 575.09 4.75 575.49 THALWEG
65.8 15 10 575.45 EDGE OF WATER
68.5 15 6 575.78 TOE OF SLOPE
73.2 6 8 584.62 TOP OF BANK
91 6 2.5 585.07 END
X-SEC 230
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
(ft) Elevation Elevation
ft in ft in ft in
TBM 0 1.5 590.37 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 5 8.75 584.64 BASELINE
23.5 5 2 585.20 TOP OF BANK
27.4 8 3.75 582.05 TOE OF BERM
32.6 8 1.25 582.26 TOP OF BERM
40.5 14 11.5 575.41 TOE OF SLOPE / EDGE OF WATER
53.4 15 7 574.78 9.25 575.55 THALWEG
57.1 14 10 575.53 EDGE OF WATER
71 14 3.5 576.07 TOE OF SLOPE
76.5 5 5.5 584.91 TOP OF BANK
91 5 3.25 585.09 END
X-SEC 210
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
(ft) Elevation Elevation
ft in ft in ft in
TBM 0 1 590.32 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 5 0.25 585.30 BASELINE
21.4 5 3.25 585.05 TOP OF BANK
24 9 4.5 580.95 TOE OF BERM
31.6 14 8 575.66 TOE OF SLOPE / EDGE OF WATER
33 14 10.25 575.47 3.25 575.74 THALWEG
37.3 14 7 575.74 EDGE OF WATER
64.9 13 2.25 577.14 TOP OF BAR
68.6 14 7 575.74 EDGE OF WATER
72.6 15 6.5 574.78 11.5 575.74 THALWEG
74.6 14 7.25 575.72 TOE OF SLOPE / EDGE OF WATER
79.4 11 1.75 579.18 TOP OF BERM
86 10 6.25 579.80 TOE OF BERM
89.6 5 11.25 584.39 TOP OF BANK
91 5 9 584.57 END
X-SEC 190
John T. Soule, Steve Harville 7-Nov-03
STA BS(+) HI FS(-) Bed/Ground WATER DEPTH Water Notes/Comments
(ft) Elevation Elevation
ft in ft in ft in
TBM 0 2.5 590.45 590.24 SE CNR. CONC. PATIO 4th FROM N
0+00 4 8.25 585.76 BASELINE
1
(Z- e c iC)vl
WC-11 16,1` F 401 , ! day
AUG 0 4 2004
Whi i t R
U W, (r `s ?j?t G I{si
® North Carolina Wildlife Resources Commission 0
Charles R. Fullwood, Executive Director
MEMORANDUM
TO: John R. Dorney, Division of Water Quality
Dept. of Environment and Natural Resources
FROM: Ron Linville, Regional Coordinator
Habitat Conservation Program
DATE: July 29, 2004
SUBJECT: Review of 401 Certification, DWQ No. 041200, Stonebridge Townhomes Bank
Restoration, Three Mile Branch, Cabarrus County
Mr. Branson Patch is requesting 401 Water Quality Certification from the North Carolina Division
of Water Quality. The NCWRC has reviewed information provided by the applicant, and field biologists
on our staff are familiar with habitat values of the project area. These comments are provided in
accordance with provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et. seq.) and the Fish and
Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d).
The project is proposed to stabilize approximately 185 feet of Three Mile Branch in Concord. The
project will use bioengineering techniques. Based on our review of the submittal, we will not object to the
project. We believe that it is essential for the stabilization to restore floodplain volume and functions by
increasing the size of the active floodplain if practicable. In addition, we recommend that multiple riparian
plant species be incorporated into the project instead of limiting revegetation to a few species.
Streambanks should be revegetated with silky dogwood (Corpus amonum), silky willow (Salix sericea), tag
alder (Alnus serrulata), black willow (Salix nigra), and sycamore (Platanus occidentalis) to provide long
term bank stability and stream shading. Note that silky dogwood, silky willow and black willow can be
planted as live stakes collected during the dormant growing season. Cuttings should be randomly planted
and done on four (4) foot centers from the waters edge to the top of the bank. Trees should be planted on
ten (10) to twelve (12) foot centers. Stream banks in these areas should also be seeded with an approved
wetland seed mix or temporary crop of wheat or rye.
We are concerned about two activities proposed. Firstly, surge stone is proposed along one side of
the stream and secondly, rock vane angles appear to be too severely angled to maintain bank stability and
encourage bed load movement. The inclination of these structures is not specified. Accordingly, we
recommend that the design and installation of these devices be reviewed further prior to certification. W-
weirs or a sequential plunge pool scenario may work as well if properly installed. We prefer coconut logs
or other "soft" techniques for stream stabilization activities.
Thank you for the opportunity to review and comment on this project. If you have any questions
regarding these comments, please contact me at 336/769-9453.
Cc: Amanda Jones, COE
Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721
Telephone: [phone] ext. 281 9 Fax: [phone]