20030389 Ver 1_COMPLETE FILE_20030331

/- ? (" 2 :.h
MEMORANDUM
TO: Tim Smith, Permit Coordinator, Asheville Office
U.S. Army Corps of Engineers
FROM: Ron Linville, Regional Coordinator
Habitat Conservation Program
DATE: April 2, 2003
SUBJECT: Review of an application by Doe Ridge Properties, Cabin Cove Subdivision,
Tributaries of Doe Fork and Howard Creek, Watauga County
The applicant is requesting a letter of concurrence from the North Carolina Wildlife
Resources Commission (NCWRC) to obtain a 404 permit from the U.S. Army Corps of
Engineers. The NCWRC has reviewed information provided by the applicant, and field
biologists on our staff are familiar with habitat values of the project area. These comments are
provided in accordance with provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et. seq.)
and the Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d).
The applicant proposes to create a large lot development. Impacts are proposed for four
perennial stream crossings. Widths of the impacted streams vary from 6.5 feet to 10 feet. Total
impacts will be 225 linear feet of stream. Good wild trout populations are present. Both brook
and rainbow trout populations are found in the area. Five proposed Aa+ channels are proposed
for 385 linear feet of stream restoration.
Due to the size of stream widths, we prefer that the crossings be made using spanning
structures or bridges. However, based on the information provided by the applicant and our
knowledge of the range of trout in the project area, we do not believe this project will cause
significant effects to waters supporting trout providing the following conditions are implemented:
I . Instream work and land disturbance within the 25-foot wide buffer zone are
prohibited during the trout spawning seasons of October 15 through April 15 to
protect the egg and fry stages of trout.
2. Stringent erosion control measures should be installed where soil is disturbed and
maintained until project completion. Temporary or permanent herbaceous
vegetation should be planted on all bare soil within 5 days of ground disturbing
activities within the twenty-five (25) foot trout buffer to provide long-term
erosion control
Mailing Address: Division of Inland Fisheries - 1721 Mail sm, ice Center • Ralcigh, NC 27699-172.1
"Telephone: [phone] ext. 281 • Fax: [phone]
Charles R. Fullwood, Executive Director

Cabin Cove Subdivision 2
April 2, 2003
3. Culverts 48" or larger should be buried approximately P into the streambed.
Culverts less than 48 inches in diameter should be buried to a depth equal to or
greater than 20% their size to allow for aquatic life passage. These
measurements must be based on natural thalweg depths. If bedrock is
encountered, the crossings should use bridging structures instead of using
explosives in order to maintain channel dimension. Where practicable, the
installation should be accomplished in a manner that prevents damming or drop
outlets on either end of the pipe in order to maintain aquatic life passage. The
upstream and downstream stream dimensions should not be modified.
4. Remaining jurisdictional waters and wetlands must be preserved in conservation
easements. We do not recommend breaking up conservation easements with
individual lot lines. Preservation as common area is preferred.
5. Native species should be used for streambank stabilization and shade.
6. If concrete will be used, work must be accomplished so that wet concrete does
not contact stream water. This will lessen the chance of altering the stream's
water chemistry and causing a fish kill. 1
7. Riprap use should be minimized. Riprap must not interfere with aquatic life
movement during seasonal low flow conditions.
8. The applicant should contact the Division of Water Quality at 336/771-4600 to
determine if a 401 Certification is needed for multiple crossings and the stream
restoration activities.
9. All stream restoration activities must use state-of--the-art bioengineering
techniques. A plan view should be provided to resource and regulatory agencies
for review and comment prior to work beginning.
Thank you for the opportunity to review and comment on this project. If you have any
questions regarding these comments, please contact me at 336/769-9453.
Cc: John Dorney, DWQ
of wAr,
?O? pG
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality

April 7, 2003
Watauga County
DWQ Project #: 03-0389
Project Name: Cabin Cove
APPROVAL of 401 Water Quality Certification including ADDITIONAL CONDITIONS
Doe Ridge Properties
Attn: Jay Vincent
Post Office Box 1238
Blowing Rock, NC 28605
Dear Mr. Vincent:
You have our approval, in accordance with the attached conditions, to impact 225 feet of stream
for the purpose of constructing a residential subdivision as you described in your application dated
March 27, 2003. After reviewing your application, we have decided that this fill is covered by General
Water Quality Certification Number 3402, which may be viewed on our website at
http://h2o.enr.state.nc.us/ncwetlands. This certification allows you to use General Permit Number 39
when the Corps of Engineers issues it. In addition, you should get any other federal, state or local
permits before you go ahead with your project including (but not limited to) Sediment and Erosion
Control, Coastal Stormwater, Non-Discharge and Water Supply Watershed regulations. This approval
will expire when the accompanying 404 or CAMA permit expires unless otherwise specified in the
General Certification.
This approval is only valid for the purpose and design that you described in your application
except as modified below. If you change your project, you must notify us and you may be required to
send us a new application. If the property is sold, the new owner must be given a copy of this
Certification and approval letter and is thereby responsible for complying with all conditions. If total
wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation may be
required as described in 15A NCAC 211.0506 (h) (6) and (7). This approval shall expire when the
corresponding Nationwide Permit expires or as otherwise provided in the General Certification. For
this approval to be valid, you must follow the conditions listed in the attached certification and any
additional conditions listed below.
1. Upon completion of the project, the applicant shall complete and return the enclosed
"Certification of Completion Form" to notify DWQ that all the 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 Division of Water Quality.
2. The stream mitigation as described in the application must be constructed and completed along
with the road crossing.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory
hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send
low
NCO"
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
d I
E'n V 3764 Rominger Road
Ww.?? ?? ?+ Banner Elk, NC 28604
Fax:
Ph/ 828-297-6946
?IV?s.7M e-mail: Fax: ?boonene.n
Environ„m7,Ki,' Consulting Services Inc. e-
.net
March 27, 2003 `[Q??
?A¦ ,?)
Mr. John Domey
NC DENR DWQ'''
Wetlands1401 Unit
1621 Mail Service Center v
Raleigh, NC 27699-1621° RQUp
`j WETLANDS 401
G
? 3 1 2003
RE: Cabin Cove Subdivision Project MAR
Watauga County WATER QUALITY SECTION
Dear Mr. Domey:
Transmitted with this letter are 7 copies of the 404/401 permit application for the referenced project and
a check for $475.00 to cover the application fee. Impact total for this project is 225 linear feet of
perennial stream channel.
If you have any questions regarding these items please call me at 828-297-6946, thank you.
Sincerely,
John C. Vilas
President, E'nV Environmental Consulting Services Inc.
a
j
cc: Mr. Jay Vincent
Mr. Patrick Warren
Ms. Cyndi Karoly w/attach
I

Form Version April 2001
Office Use Only: ? , .
USACE Action ID No. DWQ No.
If any particular item is not applicable to. this project. please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
l
I. Processing WETLANDS/ 401 GROUP
1. Check all of the approval(s) requested for this project: MAR 3 1 2003
X section 404 Permit ? F1 Section 10 Permit WATER QUALITY SECTION
X 401 Water Quality Certification
? Riparian or Watershed Buffer Rules 4
2. Nationwide Regional or General Permit Lumber(s) Requested: NVP°
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 Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
II. Applicant Information
Owner/Applicant Information
Name: Doe Ridge Properties
Mailing Address: P.O. Box 1238
Blowing Rock. 28605
Telephone Number (8282297-0700 Fax Number: [phone]
E-mail Address: [e-mail]
2. Agent Information (A signed and dated copy of the . Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name: Jay Vincent -
Company Affiliation: Vincent Properties
Mailing Address: P.O. Box 1238
Blowing Rock 28605
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: jay(a vincentproperties com
Page 3 of 11
V_
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: Cabin Cove
2. T.I.P. Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 2907-47-8182-000
4. Location
County: Watauga Nearest Town: Boone
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): Take 421 heading` east from
Boone toward Perkinsville At the Hwy 194 intersection (traffic light) take a left. Head down
Hwy 194 approximate yl 2 miles bearing; left on Rainbow Trail. Go approximately 1 mile to
end of paved road bearing left at fork Stay on gavel road until subdivision gate is reached.
5. Site coordinates, if available (UTM or Lat/Long): ! 36 14'21.35"N81 41'18.69"W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
Undeveloped with existing road bed.
7. Property size (acres): 150 +/- acres
8. Nearest body of water (stream/river/sound/ocean/lake): Doe Fork Howard Creek
9. River Basin: New River
(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/.)
Describe the purpose of the proposed work: To create a large lot (3 acre) subdivision.
Page 4 of 11
t-
10. List the type of equipment to be used to construct the project: Standard construction
equipment: track excavator, backhoe dump truck
11. Describe the land use in the vicinity of this project: Rural residential, agricultural and
undeveloped Very low density.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
No previous USACE 404 permits or NCDENR 401 permits have been used to develop this
ro ert .
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: No additional 404/401 permit requests are' anticipated for any planned future
development of this property
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
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.
Page 5 of 11
L ,
1. Wetland Impacts
Wetland Impact
Site Number
(indicate on ma
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
(es/no) Distance to
Nearest Stream
(linear feet
Type of Wetland***

* List each impact separately and identity temporary impacts. impacts include, Out are not 1111ntGU W. uleeu2 111Leu e.ea. 111& 61 au1u& uu,
excavation, flooding, ditching/drainage, eta For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http:/hv%v%v.fema.Qov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of existing wetlands on the property: 0 ac
Total area of wetland impact proposed: 0.0
2. Stream Impacts, including all intermittent and perennial streams
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please seci )
Stream 1 pipe 40 ft Stream 1 j 8 ft perennial
Stream 1 Rip-rap 35 ft Stream 1 8 ft perennial
Stream 2 pipe 25 ft Stream 2 10 ft perennial
Stream 2 Rip-rap 20 ft Stream 2 loft perennial
Stream 3 pipe 25 ft Stream 3 6.5 ft perennial
Stream 3 Rip -rap 15 ft Stream 3 6.5 ft perennial
Stream 4 pipe 40 ft Stream 4 6.5 ft perennial
Stream 4 Rip-rap 25 ft Stream 4
L 6.5 ft
perennial
* List each impact separately and identity temporary impacts. impacts tncmde, out are not nnuteu to: eulvc.u a..u ?.awu -p-. p,
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
Page 6 of 6
vow%v.us;s.Rov. Several internet sites also allow direct download and printing of USGS maps (e.g., Nww.topozone.com,
w??w.mapttuest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 225 feet
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
(acres) Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

* List each impact separately and identity temporary impacts. impacts mctuae, out are not nmitea to: nu, excavation, ureugm-.1
flooding, drainage, bulkheads, etc.
4. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? 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.):
Size of watershed draining to pond: Expected pond surface area:
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
To minimize impacts existing railroad grades were used to construct the new subdivision road.
Existing pipe length was extended to the new road width rather than creating all new piped
crossings Streams 1-4 are Qiped whereas stream 5 is proposed to be spanned by a bridge (25
)to further minimize impacts. No additional stream crossings are proposed beyond
foot minimum
that of the existing railroad grade Cabin Cove is also a proposed large lot subdivision.
Page 7 of 7
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic 'environment are minimal. Factors
including size and type of proposed impact and function' and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmszide.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.
Stream Restoration/Enhancement is proposed for all impacted stream reaches based on
analysis of stability. Natural Channel Design and restoration is proposed in areas that appear
unstable and where construction can result in improved stability. Enhancement is proposed m
areas that remain moderately stable (riparian planting bank stabilization structures). see
attached narrative)
Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
Page 8 of 11
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at t,ttp://h2o.enr.state.nc.us/w!M/index.htm. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): 0
Amount of buffer mitigation requested (square feet): 0
Amount of Riparian wetland mitigation requested (acres): 0
Amount of Non-riparian wetland mitigation requested (acres): 0
Amount of Coastal wetland mitigation requested (acres): 0
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds orl the use of public (federal/state/local)
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, can 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 ?
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
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 213 .0233
(Meuse), 15A NCAC 213 .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ® No If you answered "yes", provide the following information:
Page 9 of 11
Project will impact several small unnamed tributaries of Doe Fork Creek which is a WS-II
HQW and a trout stream Buffer impacts are associated with upgrading previously existing
roadbed Mitigation will provide stability to previously disturbed buffer road crossing.
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 3
2 1.5
Total
2 d
XI.
XII.
* Zone 1 extends out 30 feet perpendicular from near bank of channel, Zone exten s an
additional 20 feet from the edge of Zone I
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.
Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious acreage is <1% Proposed impervious area is 8.45 acres of a 150 acres total
-
on site proposed impervious vs total acreage = 5.6%)
Sewage Disposal (DWQ Only)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
On site single septic systems will be installed in accordance with local regulation.
XIII. Violations (DWQ Only)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H
Yes ? No X
0500) or any Buffer Rules?
Page 10 of 1 I
I
Is this an after-the-fact permit application?
Yes No
XTV. Other Circumstances (Optional):
it is the applicant's responsibility to submit the application sufficiently in advance ()f 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-dovvn schedules for lakes, dates associates] with Endangered and
'threatened Species, accessibility problems, or other issues outside of the applicant's control).

Applicant//A er 's Signature Date
(Agent's sig ature is valid only if an authorization letter from the applicant is provided.:)
US Army Corps Of Engineers Field Office s and County Covet-age
Asheville Regulatory Field Office Alexander Cherokee lredell Mitchell Union
US Army Corps of Engineers Avery Clay Jackson Polk Watauga
151 Patton Avenue Buncombe Cleveland Lincoln Rowan Yancey
Room 208 Burke Gaston Macon Rutherford
NC. 28301-5006
Asheville Cabarrus Graham N11adison Stanlcv
,
Telephone: [phone] Caldv ell Haywood McDowell Swain
Fax: [phone] Catawba Henderson ivtecklenburg Transylvania
Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham Wilson
US Army Corps Of Engineers Allegliany Edgecombe Lee Stokes Yadkin
6508 Falls of the Neuse Road Ashe Franklin Nash Surry
Suite 120 Caswell Forsyth Northampton Vance
Raleigh. NC 27615 Chatham Granville Orange Wake
Telephone: [phone] Davidson Guilford Person Warren
Fax. [phone] Davie Halifax Randolph Wilkes
Washington Regulatory Field Office
L'S Army Corps of Engineers
Yost Office Box 1000
Washington, NC 27889-1000
Telephone: [phone]
Fax: [phone]
Beaufort Currituck
Bertic Dare
Camden Gates
Carteret* Green
Chowan Hertford
Craven Hyde
Wilmington Regulatory Field Office Anson DupGn
LIS Army Corps Of Engineers Bladen Harnett
Page I 1 of 11
d Q+srU-1 F;;:7 _C270
Jones
Lenoir
Martin
Pamlico
Pasquotan k
Perquimans
Onslow
Pender
Pitt
Tyrrell
Washington
Wayne
*Croatan National Forest Only
cot r w v i T • .•? r .-. .-, . -. .... .
, b??i?b4?bJJ
03/13/2003 17:09 CARROLL LEATHER y 81P2950047 N0.452 D001
Ggrro CgMll Companies, nc:
4CO2 Hwy. 421 South
PBo?. 1549 Boone, NC 28607
P.O. arch 13, 2003
.ENV Environmental
3764 Rorninaer Road
Banner Ell-, North Carolina 28604
To Whom It May Concern:
Please consider this letter as authorization for Jay Vincent of Vincent Properties, Inc. to
act as an agent on behalf of Igoe Ridge Properties, Inc. (Cabin Cove) for the purpose of
applying for 4041401 permitting with the State of North Carolina and any other issues
pertaining to this matter.
If you should have any questions or need further assistance, please feel free to contact me
at [phone].
Cordially,
Sterling Ca 11
Managing ner of Doe Ridge Properties, Inc.
Phone: [phone];21 1-80$84-2521
?:uzc clgco.cam Fax 828-?64-2633
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Name: BOONE Location: 036° 14'21.9" N 081° 41' 37.8" W
Date: 3/26/2003 Caption: Cabin Cove Steram Restoration
Scale: 1 inch equals 1333 feet
Copyright (C) 1997, Maptech, Inc

4 c
TYPICAL CHANNEL RESTORATION DETAIL
WITH STEP-POOL/DROP-POOL STRUCTURE
PLAN VIEW
STREAM
ROAD
ROCK
TO EXISTING STREAM
PROFILE
=111=III=III=ni=
111=111=111-III=III -
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ROAD
=III =_ 111 = =III = GRADE
III=III =III III=III
-_ III
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III = LOW-FLOW PIPE
HIGH-FLOW PIPES
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III = EAGER ROCK
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TYPICAL CHANNEL
VEGETATION DETAIL
SYMBOL DESCRIPTION
)(TEMPORARY SEED MIX = MILLET and RYE
*TO BE APPLIED WITHIN 15 DAYS OF LAND
DISTURBING ACTIVITY IN DISTURBED AREAS
*18-36" BARE ROOT WHIPS =
"
320 TREES/AC*
*ANY 3-4 OF FOLLOWING *DENSITY
*(TREES) = RED MAPLE, TULIP POPLAR, RED OAK,
CANADIAN HEMLOCK, GREEN ASH,
RIVER BIRCH
)(LIVE STAKES =
*(SHRUBS) = RHODODENDRON, AND/OR WILLOW
)(PERMANENT SEED MIX =
*(HERB) = NATIVE HERBACEOUS MIX:
)(*+/- any of following:
-NE Aster, Joe Pye Weed, Tear Thumb,
Buttercup. Oeer Tongue, Red Clover
*PLANTING TO OCCUR IN ALL DISTURBED AREAS*
Project: Cabin Cove Subdivision Stream Restoration
Location: Watauga Co., NC
General:
Cabin Cove Subdivision is a large tract residential community development. Within the
development are proposed single-family residential homes. The proposed stream restoration
project is associated with five crossings (4 piped) of the subdivision road. The project is intended
to provide mitigation for existing impacts on this project.
Existing Rail-Road (RR) grade (pre-1940's) extends through the project site. Pipe lengths were
approximated from this previously existing RR grade. A county standard road was built within
the past 2 years through the project over this RR grade and existing piped crossings were
upgraded and lengthened resulting in piped and rip-rap impacts (see table & PCN report). These
newly existing pipes were determined to be undersized and are proposed to be either replaced or
additional pipes added (see project description).
Stream restoration is proposed to mitigate for the piped and rip-rap impacts noted above. Rip-rap
and washed stone will be removed and replaced with drop-pool structures to ensure stability. Any
detrimental obstructions to flow will also be removed (ie: stumps, boulder jumble, etc...).
Disturbed riparian areas will be restored with the planting of native vegetation to further stabilize
banks.
Five proposed Aa+ channels will be restored with a total linear footage of approximately 385
feet. The design is based on reference reach data collected from both on site (Stream 2 Cabin
Cove, upstream of impact area) and Sunalei Preserve (see Reference Reach Parameter
Spreadsheet). The reference reach streams used in the Cabin Cove design were selected based on
similarities in stream type, slope, and desired characteristics. The objective of the proposed
stream restoration is to provide stability, restore natural channel bedform characteristics, and re-
establish a vegetated buffer on all unstable stream corridors throughout the project site.
Existing Condition:
For permitting purposes the streams on the project site were numbered 1-5. The first piped
crossing after entering the subdivision entrance gate is Stream 1. Stream 2 is the next piped
crossing, and so on.
Stream 1 is an Aa+ with an average slope 34%. From the 48" piped discharge, approximately 35'
of the channel is littered with rip-rap and lacks channel definition, and profile stability.. The
lower, less steep portion of the channel is littered with washed debris including boulders and
stumps, buffer vegetation in this lower area has also been significantly disturbed. Approximately
115' of the channel and/or buffer is disturbed.
The next piped crossing, Stream 2, exists as a disturbed Aa+ with an average slope of 43%. The
existing pipe is 24" in diameter. From the pipe discharge, rip-rap litters the channel
approximately 20'. Boulders, stumps and other non-beneficial woody debris litter the channel
until it reaches the tree line. The channel lacks definition and profile stability until it reaches the
undisturbed tree line.
Stream 3 is an Aa+ channel with an average slope of 26%. The existing pipe is 24" in diameter.
From the pipe downstream, approximately 15' the channel has profile stability problems created
from washed out rip-rap and woody debris. Below this area the channel continues in a natural and
undisturbed state. Riparian buffer vegetation has been disturbed for approximately 90 below the
pipe.
Stream 4 exists as an Aa+ channel with an average slope of 54%. The existing pipe is 18" in
diameter. Rip-rap and shot rock litter the channel for approximately 25' below the pipe. The
channel appears to have been disturbed below the rip-rap for another 40 or 50 feet. Riparian
vegetation has been disturbed for approximately 85 feet.
The current road crossing over Stream 5 consists of a shelf of rip-rap and washed gravel over
bedrock. This area has been maintained in this barely passable state for years. No impact has
occurred at this location beyond the maintenance of the previously existing road bed. The rip-rap
and gravel area extends for approximately 25 feet below the bedrock.
Project Description:
All piped crossings are to be upgraded to meet county subdivision road standards. To mitigate
previous impacts to channels and riparian areas, stream restoration is proposed on streams 1-5
and will entail replacing unstable bed materials (rip-rap, boulder jumble, stumps, etc...) with
drop-pool structures to ensure profile stability. Also, all riparian areas will be restored with native
vegetation to ensure bank stability.
The proposed restoration was designed in accordance with reference reach data mentioned above.
To compensate for the flashy nature of these Aa+ streams the proposed channels will be slightly
oversized with increased depth and width to allow for high flows without bank failure. All
channels are to be restored as Aa+ drop-pool channels with large boulder grade control (step-pool
structures, see typical channel restoration plan). Cross-vane structures will be installed above all
new piped crossings to control grade and prevent headcutting upstream of the crossings. Riparian
zones will be restored on the upstream end of all crossings. The channels dimension, pattern, and
profile were designed in accordance with reference reach dimensionless ratios and also within
Rosgen's classification parameters. Below is a table describing existing and proposed conditions:

Stream
#
Existing
Pipe
Length Approximate
Previous
Length (RR
Grade Pipe)

Pipe
Impact

Rip-rap
Impact

Total
Impact Proposed
Stream
Restoration
Lengths
1 60' 20' 40' 35' " 75' 115'
2 40' 15' 25' 20' 45' 65'
3 40' 15' 25' 15' 40' 90'
4 60' 20' 40' 25' 65' 85'
5 n/a n/a n/a n/a n/a 30'
Proposed restoration on Stream 1 begins directly below the pipe extending approximately 115'
downstream. Washed out rip-rap will be replaced with step-pool and drop-pool structures (see
detail) creating a pool-pool spacing in accordance with reference reach parameters. Detrimental
obstructions to flow (boulders, stumps, etc...) will also be removed from the channel during
construction. The existing 48"x 60' pipe will be replaced by a 60" x 60' pipe in accordance with
local regulation.
Restoration begins on Stream 2 directly below the pipe, extending approximately 64'
downstream. The rip-rap, washed-out boulders, and non-beneficial woody debris will be
removed and replaced with step-pool structures to re-establish an appropriate channel bedform
sequence. The existing 24" x 40' pipe will remain as a base flow pipe with the addition of two
36" x 40' pipes to meet county standards (see typical channel restoration detail).
Stream 3 restoration begins below the road extending approximately 30'. Rip-rap will be
replaced with step-pool structures (see typical channel restoration detail) to ensure profile
stability. Restoration of the channel will then continue downstream beyond the disturbance with
the removal of non-beneficial woody debris and extensive riparian planting. The existing 24" x
40' pipe will remain as a base flow pipe with the addition of two 30" x 40' pipes in accordance
with local regulation.
Proposed restoration for Stream 4 extends from road approximately 85' downstream, to the
existing-undisturbed tree line. Rip-rap will be replaced with step-pool grade control (see typical
channel restoration detail) to establish correct pool-pool spacing in accordance with reference
reach parameters. A defined channel will replace the split, undefined existing channel. Excessive
obstructions to flow will be removed. The existing 18" x 60' pipe will remain as a base flow pipe
with the addition of two 30" x 60' pipes to meet county standards.
Stream 5 restoration extends from the existing road down-slope approximately 25'. Rip-rap and
washed stone will be removed and replaced with step-pool structures as necessary to ensure
profile stability. The proposed road will be shifted downstream and will cross the creek with a
proposed bridge no impacts anticipated at this location.
Bank Stabilization:
Throughout the Cabin Cove project many bank stabilizing measures will be implemented.
Following construction all disturbed/constructed areas will immediately be seeded with a
temporary rye/millet mix. Planting will continue with a natural seed mix, live stakes, and bare
root/container grown trees in all riparian areas (see typical planting plan). Disturbed/seeded
areas will be will be covered in erosion control fabric (where needed) to withstand erosion in high
slope areas. Sod mats will be used, when available, to promote rapid bank stability. Step-
pool/drop-pool structures will be constructed in steep sections and cross vanes in flatter sections
to stabilize the profile and take stress of the banks (see typical channel restoration details).
Cabin Cove Design

Reference Parameter Spreadsheet
existing proposed

each Name

Cabin Cove Stream
2 Reference Reach Sunalei
Preserve
Reference
Reach

Cabin Cove Stream
1

abin Cove Stream 1
Stream Type A3a+ A4a+ Aa+ Aa+
Drainage Area 89.5 ac 30 ac 57.6 ac 57.6 ac
Bankfull Width 10-11 ft loft 16 ft 9.2 ft
Bkf mean depth 0.88-0.98 ft 0.94 ft 0.51 ft 1.1-1.18
W/D -10 9.4 31.3 -8.4
Area, bkf 9.8 sq ft 9.47 sq ft 8.3 sq ft 9.1-9.7 s ft
mean Velocity
bkf Q
max depth bkf 1.71-1.76 ft 1.81 ft 0.7 ft 2.07 ft
d-m ax/d-bkf -1.94 1.92 1.37 -1.8
bank height ratio 1-1.1 1-1.1 -1 1-1.2
Width f pa 20 ft 22 ft >30 ft
Entrenchment Ratio 2 1.9 -2

Meander Length
Belt Width
Radius of Curvature
Lm/Wbkf
Rc/Wbkf
Wblt/Wbkf
Sinuosity
Valle Sloe 0.269 0.268 0.34 0.34
Avg. Sloe 0.269 0.268 0.34 0.34
Pool Slope
Riffle Slope
Glide Slope
Run Slope
S /Sav
Sr/Sav
S /Sav
Srun/Sav

max pool depth 1.96 ft 1.47 ft 1.2 ft 1.95 ft
Dmax- /Dbkf -2 1.56 2.3 -1.7
Width-pool 11 ft 11.5 loft 8.7 ft
W- /W-bkf 1 1.15 0.62 0.94
Area-pool 9.92 sq ft 9.99 sq ft 9.05 sq ft 9.5-10.1 s ft
A- /A-bkf 1.01 1.05 1.09 1.01-1.07
P-P spacing 13-15 ft 12-15 ft 11-15 ft
P-P s acin / Wbkf 1.2-1.4 1.2-1.5 1.19-1.63

Channel Materials
D16 8mm 8mm
D35 64mm 110mm
D50 100mm 300mm
D84 950mm 1300mm
D95 bedrock 2000mm

Riffle Count
D16
D35
D50
D84
D95

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D16
D35
D50
D84
D95

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Reference Parameter Spreadsheet
existing proposed

Reach Name Cabin Cove
Stream 2
Reference Reach
Sunalei Preserve
Reference Reach
Cabin Cove
Stream 2
Cabin Cove Stream
2
Stream Type A3a+ A4a+ Aa+3 Aa+
Drainage Area 89.5 ac 30 ac 89.5 ac 89.5 ac
Bankfull Width 10-11 ft 7.7 ft 14 ft 9.5 ft
Bkf mean depth 0.88-0.98 ft 1.06ft 0.73 ft 1.1-1.16 ft
W/D -10 7.3 19.2 8.3
Area, bkf 9.8 sq ft 8.2 sq ft 10.27 sq ft 10.5-11.1 s ft
mean Velocity
bkf Q
max depth bkf 1.71-1.76 ft 2.32 ft 1.25 ft 2.2 ft
d-max/d-bkf -1.94 2.2 1.71 -1.83
bank height ratio 1-1.1 1-1.2 -1 1-1.2
Width f pa 20 ft 16 ft >25 ft
Entrenchment Ratio 2 2.1 -1.8

Meander Length
Belt Width
Radius of Curvature
Lm/Wbkf
Rc/Wbkf
Wblt/Wbkf
Sinuosity
Valle Sloe 0.269 0.43 0.43 0.43
Avg. Sloe 0.269 0.43 0.43 0.43
Pool Slope
Riffle Slope
Glide Slope
Run Slope
S /Sav
Sr/Sav
S /Sav
Srun/Sav

max pool depth 1.96 ft 2.14 ft 1.2 ft 2.04 ft
Dmax- /Dbkf -2 2.01 -1.6 -1.7
Width-pool 11 ft 7.3 ft 14 ft 9.9 ft
W- /W-bkf 1 1.23 1 1.04
Area-pool 9.92 sq ft 8.22 sq ft 11.4 sq ft 10.8-11.4 s ft
A- /A-bkf 1.01 0.95 1.1 1.0-1.05
P-P spacing 13-15 ft 7-9 ft 12-15.5 ft
P-P s acin /Wbkf 1.3-1.5 1.25-1.6 1.26-1.63

Channel Materials
D16 8mm 8mm
D35 64mm 110mm
D50 100mm 300mm
D84 950mm 1300mm
D95 bedrock 2000mm

Riffle Count
D16
D35
D50
D84
D95

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D35
D50
D84
D95

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D50
D84
D95

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Reference Parameter Sprea dsheet
existing proposed

Reach Name
Stream Type
Drainage Area
Bankfull Width
Bkf mean depth
W/D
Area, bkf Cabin Cove Stream
2 Reference Reach
A3a+
89.5 ac
10-11 ft
0.88-0.98 ft
-10
9.8 sq ft Sunalei Preserve
Reference Reach
A4a+
30 ac
loft
0.94 ft
9.4
9.47 sq ft Cabin Cove
Stream 3
Aa+
45.9 ac
loft
0.52 ft
19.23
5.15 sq ft
Cabin Cove Stream 3
Aa+
45.9 ac
8 ft
0.99-1.03 ft
-8.1
6.7-7.3 s ft
mean Velocity
bkf Q
max depth bkf
d-max/d-bkf
bank height ratio
1.71-1.76 ft
-1.94
1-1.1
1.81 ft
1.83
1-1.1
.95 ft
1.83
-1.1
1.6 ft
-1.78
1-1.2
Width f pa 20 ft 22 ft >25 ft
Entrenchment Ratio 2 1.9 -2.5

Meander Length
Belt Width
Radius of Curvature
Lm/Wbkf
Rc/Wbkf
Wblt/Wbkf
Sinuosity
Valle Sloe
0.269
0.268
Q, 3
.3
Avg. Sloe 0.269 0.268 3 3a
Pool Slope
Riffle Slope
Glide Slope
Run Slope
S /Sav
Sr/Sav
S /Sav
Srun/Sav

max pool de th
Dmax- /Dbkf
Width-pool
W- /W-bkf
Area-pool
A- /A-bkf
P-P spacing
P-P s acin /Wbkf 1.96 ft
-2
11 ft
1
9.92 sq ft
1.01
13-15 ft
1.3-1.5 1.47 ft
1.56
11.5
1.15
9.99 sq ft
1.05
12-15 ft
1.2-1.5 0.9 ft
1.7
9 ft
0.9
5.95 sq ft
1.15 1.76 ft
-1.6
7.9 ft
0.98
7.1-7.8 s ft
1.05-1.06
10-12 ft
1.25-1.5

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D16 8mm 8mm
D35 64mm 110mm
D50 100mm 300mm .
D84 950mm 1300mm
D95 bedrock 2000mm

Riffle Count
D16
D35
D50
D84
D95

Sub-Pavement
D16
D35
D50
D84
D95

Bar Sample
D16
D35
D50
D84
D95
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Reference Parameter Spreadsheet
existing proposed

Reach Name Cabin Cove
Stream 2
Reference Reach
Sunalei Preserve
Reference Reach
Cabin Cove
Stream 4
Cabin Cove
Stream 4
Stream Type A3a+ A4a+ Aa+ Aa+
Drainage Area 89.5 ac 30 ac 35.8 ac 35.8 ac
Bankfull Width 10-11 ft 7.7 ft 7 ft 7 ft
Bkf mean depth 0.88-0.98 ft 1.06ft 0.91 ft 0.97-1.3 ft
W/D -10 7.3 7.7 -6.7
Area, bkf 9.8 sq ft 8.2 sq ft 6.4sq ft 6.2-6.8 ft
mean Velocity
bkf Q
max depth bkf 1.71-1.76 ft 2.32 ft 1.1 ft 1.9 ft
d-max/d-bkf -1.94 2.2 1.2 -1.9
bank height ratio 1-1.1 1-1.2 1 1-1.2
Width f pa 20 ft 16 ft 20 ft
Entrenchment Ratio 2 2.1 --2.8

Meander Length
Belt Width
Radius of Curvature
Lm/Wbkf
Rc/Wbkf
Wblt/Wbkf
Sinuosity
Valle Sloe 0.269 0.43 0.54 0.54
Av . Sloe 0.269 0.43 0.54 0.54
Pool Slope
Riffle Slope
Glide Slope
Run Slope
S /Sav
Sr/Sav
S /Sav
Srun/Sav

max pool depth 1.96 ft 2.14 ft 0.9 ft 1.9 ft
Dmax- /Dbkf -2 2.01 1 -1.9
Width-pool 11 ft 7.3 ft 13.5 ft 7.15 ft
W- /W-bkf 1 1.23 1.9 1.02
Area-pool 9.92 sq ft 8.22 sq ft 6.98 sq ft 6.3-7.0 s ft
A- /A-bkf 1.01 0.95 1.1 1.01-1.03
P-P spacing 13-15 ft 7-9 ft 8-11 ft
P-P s acin /Wbkf 1.3-1.5 1.25-1.6 1.1-1.5

Channel Materials
D16 8mm 8mm
D35 64mm 110mm
D50 100mm 300mm
D84 950mm 1300mm
D95 bedrock 2000mm

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D16
D35
D50
D84
D95

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D16
D35
D50
D84
D95

Bar Sample
D16
D35
D50
D84
D95

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