20130794 Ver 1_401 Application_20130713

20130T94
�► i -
July 25,2D13
Ms. Taft McCormick
USACE
Asheville Regulatory Feld Office
151 Paton Ave, Rm 208
Asheville, NC 28801008
RE: Land Harbor - Linville River Bank Stabilization Project
Avery County, NC
1077- 7!A'. T .1 a I _
sM Raftm Rd
Boom mac, W. 2=4
Pk e2SW.6M
Feu 828.297 -1982
eqw& v= KiMskybo t.00m
Enclosed is an application for NWP 13 and WQC #3885 for the referenced project. The property owner
is Linville Land Harbor POA represented by Mdmd D Simpson, Manager The Applicant and contact
are the same. John Vilas with ENV Inc. is the agent, (authorkation letter included with PCN) and has
prepared this application. Copies of this PCN have been mailed to both DM (5 with a check for $240
to cover 401 fee) and NCWRC.
If you creed to sdredule a site visit please contact me. Please include ENV Inc. on the copy list of all
correspondence for this Vgeat. If you have any questions regarding this information pie call me at
828- 297 - 6946, thank you.
Sirx�+s{y,
J C. Vilas
President, ENV Envimnmental Consuttirg Services Inc.
Cc: Mr. Dave McHenry, NCWRC
Mr. Mike Simpson, Land Harbor POA
NCDWQ, oantral office (5 copes with check)
JUL 3 0 2013

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20130794
Office use Only:
Corps action ID no.
DWQ project no.
Form Version 1.0 November 2008
Pre - Construction Notification (PCN) Form
A. Applicant Information
1. Processing
1 a. Type(s) of approval sought from the
Corps:
❑ Section 404 Permit ❑Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: 13 or General Permit (GP) number:
1c. Has the NWP or GP number been verified by the Corps?
® Yes
❑ No
1d. Type(s) of approval sought from the DWQ (check all that apply):
® 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization
le. Is this notification solely for the record
because written approval is not required?
For the record only for DWQ 401
Certification:
❑ Yes ® No
For the record only for Corps Permit:
❑ Yes ® No
1f. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation
of impacts? If so, attach the acceptance letter from mitigation bank or in -lieu
fee program.
❑ Yes
® No
1g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
❑ Yes
® No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes
® No
2. Project Information
2a. Name of project:
Land Harbor - Linville River Bank Stabilization
2b. County:
Avery
2c. Nearest municipality / town:
Linville
2d. Subdivision name:
Land Harbor
2e. NCDOT only, T.I.P. or state
project no:
_
3. Owner Information
3a. Name on Recorded Deed:
Linville Land Harbor POA L • 0
201
3b. Deed Book and Page No.
457/2094 NR .
Mike Simpson
Ury
3c. Responsible Party (for LLC if
applicable):
3d. Street address:
20 Land Harbor Plaza
3e. City, state, zip:
Newland, NC 28657
3f. Telephone no.:
828 -733 -8300
3g. Fax no.:
3h. Email address:
Page 1 of 15
PCN Form — Version 1.0 November 2008 Version

Section A. Applicant Information, continued
4. Applicant Information (if different from owner)
4a. Applicant is:
❑ Agent ❑ Other, specify:
4b. Name
4c Business name
(if applicable):
4d. Street address,
4e City, state, zip,
4f. Telephone no
4g. Fax no.:
4h. Email address.
5. Agent/Consultant Information (if applicable)
5a Name.
John Vilas
5b Business name
(if applicable)
ENV Environmental Consulting Services, Inc
g
5c Street address*
3764 Rominger Rd
5d City, state, zip:
Banner Elk, NC 28604
5e. Telephone no.:
828 -297 -6946
5f. Fax no.:
828 -297 -1982
59. Email address
john @env- ecs.com
Page 2 of 15
PCN Form — November 2008 Version

B. Project Information and Prior Project History
1. Property Identification
1a Property identification no (tax PIN or parcel ID)
184410364189
1b. Site coordinates (in decimal degrees):
36.048'N - 81 898'W
1c. Property size:
264 42 acres
2. Surface Waters
2a Name of nearest body of water (stream, river, etc.) to
project:
Linville River
2b. Water Quality Classification of nearest receiving water
Class B, Trout
2c River basin
Catawba
Page 3 of 15
PCN Form — Version 10 November 2008 Version

B. Project Information and Prior Project History
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application,
General Findings:
The Linville River is located in the upper Catawba River Basin and has it's headwaters near Linville Gap between
Grandfather Mountain and Flattop Mountain in Avery County, NC The project site is located roughly 8 river -miles
downstream from the origin and where the drainage area of the river is approximately 17 square miles The Linville River
within the project area is a type -C river, which means it has an average water surface slope of less than 2 %, it is
characterized as meandering with a regular sequence of pools and riffles, it is generally wide and shallow, and had a
broad accessible floodplain The riparian corridor within the project site is almost entirely vegetated but much of the left
bank has been altered from a natural condition due to landowner activities such as clearing, mowing, and filling.
The Linville River through the project area is moderately stable but there are areas of active bank erosion, some of which
are severe Over the past 10 years several trees have been undermined and fallen into the channel or were cut prior to
falling. The river is not incised, nor is there evidence of excessive sediment deposition within the channel. The excessive
length of some pools, when compared to We length, is indicative of potential instability as is the relatively shallow pool
depth.
A portion of the project reach has been worked on in the past. Roughly 300 linear feet along the left bank at the upstream
end of the project site had rip rap placed along the bank to address an erosion problem. In some areas this rip rap
continues to protect the bank, in other areas erosion has continued.
The project area consists of two sections totaling approximately 1000 linear feet of the left bank of the Linville River. The
project is located in the Meadows section of the Land Harbor development in Avery County The project area begins at
the low -water concrete bridge on River Rd and extends downstream to the large meander bend at the intersection of
River Rd. and Highland Hills Rd. Within this area are two sections where bank stabilization activities are proposed
See Map
Site 1 Golden Rod (GR):
The GR site extends from the concrete bridge on River Road downstream to Golden Rod lot #73 for a length of about 700
linear feet There are 8 homes along the left bank of the river in this reach. This reach is relatively straight and very flat
Several areas of bank erosion exist along the left bank, with the most severe occurring in the downstream portion of the
site Several trees have been lost and more appear threatened in this same area The channel is gradually widening,
toward the left bank, as a result of reduced root density, minor filling, and a lack of optimal ground cover along the left
bank. This site has been divided into 3- sections based on different site characteristics, the Upper Section, Overw ide
Section, and Lower Section
Site 2 River Bend (RB):
The RB site is located downstream of the GR site near pump station #4 and the intersection of River Road and Highland
Hills Road The area of concern at RB is along the left bank next to Golden Rod Lots 49, 41, and 21. The length of river
bank to be stabilized is approximately 250 linear feet. Across from the area of concern is a large point bar composed of
unconsolidated sandy alluvium and littered with flood debris. The Linville River has shifted position in this area, gradually
migrating toward the left bank Over the past decade a few trees have been undermined and a condition of active bank
erosion persists The shape of the meander bend has become irregular on the upstream side. The channel now bends
slightly left before bending more sharply right, a mid - channel bar has formed across from this irregular bend
3b. List the total estimated acreage of all existing wetlands on the property
There are no wetlands outside of the bankfull boundary of the Linville River within the project corridor There are some
vegetated portions of the point bar and a vegetated central bar in the RB area.
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
The project area contains approximately 1000 linear feet of the Linville River, there are no tributary streams within the
project reach
Page 4 of 15
PCN Form — November 2008 Version

B. Project Information and Prior Project History
3d. Explain the purpose of the proposed project.
While the Linville River through the project area is considered moderately stable and of generally high quality, there are
several problem areas that will likely become severe if allowed to persist un- checked The problem areas are located
along the left bank of the river and consist of sections of eroded bank with undermined trees or shrubs. The vegetation in
these areas has been altered by landowner activity over the years resulting in reduced root density in the stream bank.
This condition makes the stream banks more susceptible to the erosive forces of the river particularly during high flow
events Homeowners along this section of the Linville River have become increasingly concerned as these problems have
persisted. The protect purpose is to design and implement a stream bank stabilization project to address recognized
problems now, rather than wait for the problems to become severe
Page 5 of 15
PCN Form — November 2008 Version

B. Project Information and Prior Project,History
3e. Describe the overall project in detail, including the type of equipment to be used:
Site 1 Golden Rod (GR): The GR site extends from the concrete bridge on River Road downstream to Golden Rod lot #73
for a length of about 700 linear feet. This site has been divided into 3- sections based on different site characteristics, the
Upper Section, Overwide Section, and Lower Section.
Upper Section: Proposed work in this section is confined to the left bank and includes regrading and stabilization of
scoured areas immediately downstream of the concrete bridge (total length approx. 50 linear feet) at the upstream limit of
the project area Below this area, for about 175 linear feet, the streambank is eroded with a few undercut trees. This area
was stabilized with rip rap in the past and the old rip rap is still functioning in some areas but not in others. The current
plan calls for adding additional rip rap where needed to create a stable toe of bank, then grading the banks to a flatter
angle backfilling over the rip rap Graded areas are to be stabilized with coir matting and replanted with native grasses
and woody species. No existing trees will be removed , the goal is to protect and preserve all existing trees
Overwnde Section: This section is located between the Upper and Lower sections and is characterized by a noticeable
"notch" in the left bank resulting in a widening of the channel by about 15 feet The widened area is roughly 100 linear
feet. The current plan calls for construction of a low bench through this area This bench will be created by installing a
trenched in boulder line connecting the existing banks above and below this section Behind the boulder line the area will
be backfilled with material excavated from the riverbed to create a vegetated bar The cross - sectional area of this area
will be maintained but the maximum depth of the pool will be increased The inner -bens created will allow for pedistnan
access through this area The upper portion of the new berm will be revegetated with native herbaceous and woody
species.
Lower Section This section is the most severely degraded within the GR Site The current plan calls for a line of
trenched -in boulders roughly 265 linear feet The adjacent bank will be regraded to a flatter angle, stabilized with coir
matting and replanted with native grasses and woody species The existing cross - section will be maintained but instead
of a vertical or undercut bank, the toe boulders well be backfilled to a more sustainable angle The goal is to protect and
preserve all the existing trees and plant additional trees and shrubs The regrading of the bank will eliminate the erosing
swale/ddch that parallels the channel and threatens several existing trees.
The proposed work would take 7 -10 days to complete. A Nationwide Permit would be required from the US Army
Corps of Engineers (USACE) and a Water Quality Certification would be required from the NC Division of Water Quality.
A Floodplam Development Permit would be required by Avery County. According to Avery County officials no flood study
will be required for a project of this scope provided the scope is not modified to include above grade fills in the mapped
floodway Avery County will require the submission of an engineered plan showing no proposed floodway alterations The
permitting process would take roughly 60 to 90 days to complete. Land disturbing activity in the channel or 25 foot -wide
trout buffer is not allowed from October 15 to April 15 of any year
Site 2 River Bend (RB):The RB site is located about 700 linear feet downstream of the GR site near the intersection of
River Road and Highland Hills Road. The area of concern at RB is along the left bank next to Golden Rod Lots 49, 41,
and 21. The length of river bank to be stabilized is approximately 250 linear feet. Across from the area of concern is a
large point bar composed of unconsolidated sandy alluvium and littered with flood debris. The Linville River has shifted
position in this area, gradually migrating toward the left bank Over the past decade a few trees have been undermined
and a condition of active bank erosion persists The shape of the meander bend has become irregular on the upstream
side. The channel now bends slightly left before bending more sharply right; a mid - channel bar has formed across from
this irregular bend If this condition is allowed to persist it appears likely the erosion of the left bank will continue until
eventually a shoot cut -off develops through the point bar.
The proposed remedy at the RB site is to build out the left bank slightly to correct the irregular bend and to construct
three large J -hook vanes extending from the left bank to shift energy towards the center of the channel while protecting
the left bank Material needed to build out the left bank would be taken from the mid - channel bar and the point bar. Large
boulders necessary to construct the J -hook vanes-would come from a local quarry Disturbed areas would be graded
smooth and covered with coir matting and seeded The left bank would be replanted with woody vegetation to create a
dense rooted zone along the river bank.
The proposed work would take 7 -10 days to complete. A Nationwide Permit would be required from the US Army
Corps of Engineers (USACE) and a Water Quality Certification would be required from the NC Division of Water Quality.
A Floodplam Development Permit would be required by Avery County. According to Avery County officials no flood study
will be required for a project of this scope provided the scope is not modified to include above grade fills in the mapped
floodway Avery County will require the submission of an engineered plan showing no proposed floodway alterations. The
permitting process would take roughly 60 to 90 days to complete. Land disturbing activity in the channel or 25 foot -wnde
trout buffer is not allowed from October 15 to April 15 of any year.
Page 6 of 15
PCN Form — November 2008 Version

B. Project Information and Prior Project History
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (including all pnor phases) in the past?
❑ Yes ® No ❑ Unknown
4b If the Corps made the jurisdictional determination, what type
of determination was made?
E) Preliminary ❑ Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known)
Agency /Consultant Company -
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
S. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
❑Yes ® No ❑ Unknown
5b If yes, explain in detail according to "help file" instructions
6. Future Project Plans
6a Is this a phased project?
❑ Yes ® No
6b. If yes, explain
Page 7 of 15
PCN Form — November 2008 Version

C. Proposed Impacts Inventory
1. Impacts Summary
1a. Which sections were completed below for your project (check all that apply):
❑ Wetlands ® Streams - tributaries ❑ Buffers
❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted
2a
2b
2c.
2d
2e.
2f
Wetland impact
Type of jurisdiction
number —
Type of
Type of wetland
Forested
(Corps - 404, 10
Area of impact (acres)
Permanent (P) or
impact
(if known)
DWQ — non -404, other)
Temporary
W1 ❑ P ❑ T
❑ Yes ❑ No
❑ Corps
❑ DWQ
W2 ❑ P ❑ T
❑ Yes ❑ No
❑ Corps
❑ DWQ
W3 ❑ P ❑ T
❑ Yes ❑ No
❑ Corps
❑ DWQ
W4 ❑ P ❑ T
❑ Yes ❑ No
❑ Corps
❑ DWQ
W5 ❑ P [IT
❑ Yes ❑ No
❑ Corps
❑ DWQ
W6 ❑ P [IT
❑ Yes ❑ No
❑ Corps
❑ DWQ
2g. Total wetland impacts
2h. Comments
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a
3b.
3c.
3d.
3e
3f
Stream impact
Type of
Stream name
Perennial (PER) or
Average stream width (feet)
Impact
number -
impact
intermittent (INT)?
length
Permanent (P) or
(linear feet)
Temporary (T)
bank
S7 ❑ P ®T
grading
Linville River
® PER DINT
700
fill
bank
S2 ❑ P ®T
grading
Linville River
® PER ❑ INT
250
fill
S3 ❑ P ❑ T
❑ PER ❑ INT
S4 ❑ P ❑ T
❑ PER ❑ INT
S5 ❑ P ❑ T
=[I R ❑ INT
S6 ❑ P ❑ T
❑ PER ❑ INT
3g. Total stream and tributary impacts
950
3h Comments- Proposed impacts will consist of temporary disturbance, necessary to accomplish project goals In some
areas it will be necessary for equipment to operate from the river in order to minimize the destruction of existing bank trees
and other bank vegetation
Page 8 of 15
PCN Form — Version 10 November 2008 Version

C. Proposed Impacts Inventory, continued
4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U S then in vidually list all o pen water impacts below.
4a.
4b.
4c.
4d.
4e.
Open water
Name of
impact number
waterbody
Type of impact
Waterbody type
Area of impact (acres)
— Permanent
(if
(P) or
applicable)
Tempo a
01 ❑P ❑T
02 ❑ PEI T
03 ❑P ❑T
04 ❑P ❑T
M. Total open water impacts
4g. Comments.
Page 9 of 15
PCN Form — November 2008 Version

C. Proposed Impacts Inventory, continued
S. Pond or Lake Construction
If Pond or lake construction pro osed then complete the chart below.
5a.
5b.
5c.
5d.
5e.
Wetland Impacts (acres)
Stream Impacts (feet)
Upland
Pond ID
Proposed use or
(acres)
number
purpose of pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
5f. Total
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
S. Buffer Impacts (for DWO)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If any impacts require mitigation, then ou MUST fill out Section D of this form.
6a.
❑ Neuse ❑ Tar - Pamlico ❑ Other:
Project is in which protected basin?
❑ Catawba ❑ Randleman
6b.
6c.
6d.
6e.
6f.
6g.
Buffer impact
number —
Reason
Buffer
Zone 1 impact (square
Zone 2 impact
Permanent (P)
for impact
Stream name
mitigation
feet)
(square feet)
or Temporary
required?
61 ❑P [IT
❑Yes ❑No
B2 ❑P ❑T
❑Yes El No
B3 ❑P ❑T
❑Yes [I No
6h. Total
buffer impacts
6i. Comments:
Page 10 of 15
PCN Form — November 2008 Version

D. Impact Justification and Mitigation
1. Avoidance and Minimization
la. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
The purpose of the project is to implement a bank stabilization plan to halt existing streambank erosion, protect existing
trees from being undermined and falling into the river, to re- establish a stable bank angle, and to plant native riparian
vegetation to increase root density in the streambank and immediate riparian zone. All of these proposed activities have
ben designed to limit streambank erosion and reduce sedimentation with the project area The proposed activity
represents the minimum amount of disturbance to the Linville River that will achieve the project purpose. Virtually all of
the proposed disturbance will be temporary to the extent that riparian contours as well as the dimension, pattern and
profile of the river will remain essentially the same between the pre and post conditions
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
The proposed work will be accomplished in such a manner as to minimize instream work to the extent practically
feaseable Some instream work will be necessary to avoid destruction of stressed riparian trees in some areas and in
other areas there is no access to the proposed work area other than the river
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
impacts to Waters of the U S. or Waters of the State?
❑ Yes ® No
2b If yes, mitigation is required by (check all that apply)*
❑ DWQ ❑ Corps
2c. If yes, which mitigation option will be used for this
project?
❑ Mitigation bank
❑ Payment to in -lieu fee program
❑ Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank
3b. Credits Purchased (attach receipt and letter)
Type
Quantity
3c. Comments:
4. Complete if Making a Payment to In -lieu Fee Program
4a. Approval letter from in -lieu fee program is attached
❑ Yes
4b. Stream mitigation requested:
linear feet
4c If using stream mitigation, stream temperature*
warm, cool, cold
4d Buffer mitigation requested (DWQ only)
square feet
4e. Riparian wetland mitigation requested:
acres
4f. Non - rpanan wetland mitigation requested
acres
4g. Coastal (tidal) wetland mitigation requested
acres
4h.. Comments.
S. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permdtee responsible mitigation plan, provide a description of the proposed mitigation plan.
Page 11 of 15
PCN Form — Version 1.0 November 2008 Version

D. Impact Justification and Mitigation, continued
6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ
6a Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation?
❑ Yes ® No
6b If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.
Zone
Reason for impact
Total impact
(square feet)
Multiplier
Required mitigation
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1,5
Total buffer mitigation required:
6c If buffer mitigation is required, discuss what type of mitigation is proposed (e g., payment to private mitigation bank,
permdtee responsible riparian buffer restoration, payment into an approved in -lieu fee fund)
6d. Comments-
Page 12 of 15
PCN Form — November 2008 Version

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
la. Does the project include or is it adjacent to protected riparian buffers identified
El Yes No
within one of the NC Riparian Buffer Protection Rules?
1b. If yes, then is a diffuse flow plan included?
❑ Yes ❑ No
2. Determination If the Project Requires a Stormwater Management Plan
2a Does the project require a Non -404 Jurisdictional General Permit?
❑ Yes ® No
2b Is the project subject to General Certification 3704 or 3705?
❑ Yes ® No
3. Determination of Stomiwater Review Jurisdiction
3a. Is this project subject to any of the following state - implemented stormwater
❑ Coastal counties
management programs (check all that apply)?
❑ HQW
If so, attach one copy of the approval letter from the DWQ and one copy of the
❑ ORW
❑ Session Law 2006 -246
approved stormwater management plan.
❑ Other-
3b In which local governments junsdiction is this project?
Avery County
3c. Is this local government certified to implement a state stormwater program?
❑ Yes ® No
If so, attach one copy of the approval letter from the local government and one copy
of the approved stormwater management plan (or one copy of the approved
Stormwater management plan stamped as approved)
4. Information Required for DWQ 401 Unit Stormwater Review
No new impervious surfaces are
4a What is the overall percent imperviousness according to the most current site plan?
proposed This project will
have no impact on runoff
characteristics of the site.
4b. Does this project contain any areas that meet the criteria for "high densely" per
❑ Yes ® No
General Certifications 3704 and 3705?
4c. If the site is over 24% impervious and /or contains high density areas, then provide a brief narrative description of the
stormwater management plan.
4d. Has a completed BMP Supplement Form with all required items been submitted
for
❑ Yes No
❑
each stormwater BMP?
Page 13 of 15
PCN Form — Version 10 November 2008 Version

F. Supplementary Information
I. Environmental Documentation (DWQ Requirement)
la Does the project involve an expenditure of public (federal/state/local) funds or the
Yes No
use of public (federal/state) land?
1b. If you answered 'yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State
❑ Yes ❑ No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1c. If you answered 'yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
letter.)
❑ Yes ❑ No
Comments.
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H 1300), DWQ Surface Water or Wetland Standards,
❑ Yes ® No
or Riparian Buffer Rules (15A NCAC 2B 0200)?
2b Is this an after - the -fact permit application
❑ Yes ® No
2c If you answered 'yes" to one or both of the above questions, provide an explanation of the violation(s)
3. Cumulative Impacts (DWQ Requirement)
3a Will this project (based on past and reasonably anticipated future impacts) result in
El Yes No
additional development, which could impact nearby downstream water quality?
3b. If you answered 'yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy If you answered "no," provide a short narrative description
4. Sewage Disposal (DWQ Requirement)
4a Clearly detail the ultimate treatment methods and disposition (non - discharge or discharge) of wastewater generated from
the proposed project, or available capacity of the subject facility.
NA
Page 14 of 15
PCN Form — Version 10 November 2008 Version

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Agent Authorhation Form
Project: Lud Harbor - Linville River Bank Stabilization
Date: 7-19--2013
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Land Harbor Linville River
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Streambank Stabilization Project
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Land Harbor - Linville River Bank Stabilization Project
River Bend (RB) Site Map
LHLR Bank Stabilization 2 of 13

ENV -ECS, Inc.
LHLR Bank Stabilization
RB Site Existing Condition Photos:
Photos of left bank within proposed work area showing
eroded and undercut banks. Residents report that bank
erosion is chronic and that several trees have been lost in
the last 10 years. Recent rains and prolonged high water
have aggravated existing bank erosion issues. Proposed
remedy will involve building bank out to create a flatter
more stable bank angle. Constructing 3 J -Hook rock
vanes to transfer stream energy towards center of
channel.
Land Harbor - Linville River Bank Stabilization Project
River Bend (RB) Site Photos
3of13

ENV -ECS, Inc.
LHLR Bank Stabilization 4 of 13

ENV -ECS, Inc.
Land Harbor - Linville River Bank Stabilization Project
Golden Rod (GR) Site Map
LHLR Bank Stabilization 5 of 13

ENV -ECS, Inc.
LHLR Bank Stabilization 6 of 13

ENWECS, Inc.
Photos 1 and 2 show same location about 8 months apart. Steady
bank erosion during several different storms over this period has
resulted in roughly 1 to 2 feet of bank erosion. Visible are sand
bags that were at least a foot from the edge now falling in the
channel.
Photo 3 shows an existing swale that parallels the channel bank,
the swale has gradually become deeper and will eventually isolate
the area between the swale and channel.
LHLR Bank Stabilization 7 of 13
Land Harbor — Linville River Bank Stabilization
GR Site: Lower Section Existing Condition

ENV -ECS, Inc.
Land Harbor /Linville River Bank
Stabilization Project
GR Site — Lower Area Detail:
LHLR Bank Stabilization 8 of 13
Photo shows lower end of the GR
section and existing swale that has
become increasingly eroded during
recent rain events. The proposed
remedy is to install boulders, trenched
into the toe of bank and backfill with
boulders, river rock and soil fill to
create a flattened bank angle. The
swale will be eliminated. The
disturbed area will be stabilized with
coir matting, seeded and replanted
with native herbaceous and woody
species.
Typical Left Bank Cross Section:
Proposed
Graded Bank
Angle
F�xisa e le
w Existing Eroded
Bank
!� Normal
Water
Surface
'T_ .
Proposed Boulders
Trenched into
Stream bed and
Bank

ENV -ECS, Inc.
Existing Condition
Photos:
Photo #1 shows entire
lower section
Photo #2 shows bank
erosion in middle of
section from recent
storms.
Photos #3 and #4
show upper and
middle portion of
section with
threatened trees and
bank erosion
Land Harbor - Linville River Bank Stabilization Project
Golden Rod (GR) Site: Lower Section Photos
LHLR Bank Stabilization 9 of 13

ENV -ECS, Inc.
LHLR Bank Stabilization 10 of 13
Land Harbor /Linville River Bank Stabilization Project
Typical Remedy for GR Site: Lower Section
Both photos on this slide show moderate to severely
eroded river banks and threatened trees. The proposed
remedy is to install boulders, trenched into the toe of
bank and backfill with boulders, river rock and soil fill to
create a flattened bank angle. The disturbed area will be
stabilized with coir matting, seeded and replanted with
woody species.
Typical Left Bank Cross Section:
Existing Eroded Bank
Normal Water
Surface
Graded Bank Angle
0
Proposed Boulders
Trenched into
Streambed and Bank
bed

ENV -ECS, Inc.
LHLR Bank Stabilization 11 of 13

ENV -ECS, Inc.
LHLR Bank Stabilization
Photos of the upper section of GB Site.
Photo #1 Is looking from the left bank at eroded area just downstream of
concrete bridge. The area of bank in the foreground needs only minor work
to address scour.
Photo #2 is also looking upstream and shows a section of bank that is more
eroded with tree's threatened. The proposed remedy is to add large rip rap at
the toe of streambank to reduce undercutting and grade banks to a more
stable (flatter) angle.
Photo #3 is looking downstream from concrete bridge. Rip rap installed in the
past is visible. The plan is to install additional rip rap, trenched into
streambed adjacent to existing and re -grade upper banks. Graded area will
be covered with coir mat and replanted with additional trees and shrubs and
well as native grasses. Existing trees to be saved to extent possible.
Land Harbor - Linville River Bank Stabilization Project
Golden Rod (GR) Site Upper Section Photos
12 of 13

ENV -ECS, Inc.
LHLR Bank Stabilization
Photo looking downstream at
Overwide section along left bank.
Bank erosion not severe but
some trees are undermined and
pedestrian traffic on bank above
is causing problems. Proposed
remedy is to trench in large rip
rap to anchor the toe of slope
and backfill with river rock
creating a low bench. Upper part
of bench would be stabilized with
coir matting and planted with
native grass, shrubs and a few
additional trees.
Land Harbor - Linville River Bank Stabilization Project
Golden Rod (GR) Overwide Section Photos
13 of 13

Land Harbor - Linville River
Bank Stabilization Project
GR - Section Typical Detail
3564
3560
3555
3552
3550
3548
3544
GR LOWER SECTION
XS - 3
Plant with Native Grass
Add Trees and Shrubs
existing
Ground`
Proposed Grade
Stabilize with Erosion
Control Mat
Filter Fabric (non -woven heavy)
Shall Be Placed Under Boulders
fisting Eroded Bank
Bankfull
1 Flow Level
Proposed Boulders Install
1 5 to 2.0 Feet Below
Streambed
Detail for Boulder Toe Protection
Prepared By:
ENV -ECS, Inc. Not To Scale

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PROFILE
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(AdapWd from Rosgen,1998)