HomeMy WebLinkAbout20141037 Ver 1_401 Application_20140914McGill
A S S O C I A T E S
September 19, 2014
US Army Corps of Engineers
Asheville Regulatory Field Office
151 Patton Ave., Room 208
Asheville, NC 28801 -5006
RE: Beetree Creek Bank Stabilization Project
Pre- Construction Notification, NWP #27/18
Swannanoa, NC
Dear Sir or Madam:
On behalf of our clients, Gods Way Baptist Church and Buncombe County, please find
enclosed a PCN application for the Beetree Creek Bank Stabilization Project dated
September 19, 2014. The purpose of the project is to stabilize approximately 250 linear
feet of streambank on Beetree Creek adjacent to the access road for Charles D Owen Park
and the Gods Way property. A NWP -27 and NWP -18 are being requested to complete
the proposed work. Four copies of the PCN application are being provided to the
NCDENR, Division of Water Resources (with a check for $570.00 to cover the 401
permit fee); one copy of the PCN applicatio n
Resource Commission. McGill Associates, P.A.
and should be copied on all project correspond
questions or comments.
Sincerely,
McGill Associates, P.A.
Jo /CVilas
Program Services Manager- Environmental
McGill Associates, P.A.
(828) 297 -6946
is being provided to the NC Wildlife
is the Authorized Agent (forms included)
ence. Please let us know if you have any
Cc: Central Office, NCDWR with check for $570.00
Doug Besler, NCWRC
Pastor Joel Burton, Gods Way Baptist Church
Greg Isreal, Buncombe County General Services Director
Environmental Planning Finance
11cGill Associates. I.A. • 3764 Rominger Road, Banner Elk, .Forth Carolina 28604
Office: 326 -297 -69.16 • Fax: 828-297 -1982
0�- WATF9OG Office Use Onl
0�
2 0 1 4 1 0 3 7 Corps action I
a < DWQ project n . _
Form Version 1.3 Dec 10 2008
Page 1 of 12
PCN Form — Version 1.3 December 10, 2008 Version
Pre - Construction Notification (PCN) Form
A.
Applicant Information
1.
Processing
1 a.
Type(s) of approval sought from the
Corps:
®Section 404 Permit E] Section
10 Permit
1 b.
Specify Nationwide Permit (NWP) number: 27 &18 or General Permit (GP)
number:
1c.
Has the NWP or GP number been verified by the Corps?
® Yes ❑ No
1 d.
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
1 e.
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 1h
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:
Beetree Creek Bank Stabilization
^,
2b.
County:
Buncombe
_.._'
2c.
Nearest municipality / town:
Swannanoa
2d.
Subdivision name:
2e.
NCDOT only, T.I.P. or state
project no:
DENR- 1NATEK RESOUKCES
401 A BUFFER PERMITT;NG
--- =--- —
3.
Owner Information
3a.
Name(s) on Recorded Deed:
Gods Way Baptist Church
County of Buncombe
3b.
Deed Book and Page No.
1944/0444
1119/407
3c.
Responsible Party (for LLC if
applicable):
pastor Joel Burton
Greg Isreal, Dir. General Services
3d.
Street address:
943 Warren Wilson Rd.
200 College St., #300
3e.
City, state, zip:
Swannanoa, NC 28778
Asheville, NC 28801
3f.
Telephone no.:
828 -458 -1700
828 - 250 -4233
3g.
Fax no.:
3h.
Email address:
Page 1 of 12
PCN Form — Version 1.3 December 10, 2008 Version
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 C Was
5b. Business name
(if applicable)
McGill Associates, PA
5c
Street address
3764 Rominger Rd
5d
City, state, zip
Banner Elk, NC 28604
5e
Telephone no
(828) 297 -6946
5f.
Fax no
5g
Email address
john vdas @mcgdlengineers.com
Page 2 of 12
B.
Project Information and Prior Project History
1.
Property Identification
1a
Property identification no (tax PIN or parcel ID)
9689 -25- 2187 -00000 9689 -14- 2450 -00000
lb
Site coordinates (in decimal degrees)-
Latitude* 35 611997 Longitude - 82 428664
(DD DDDDDD) ( -DD DDDDDD)
1c
Property,size
Project corridor runs along boundary between two,parcels
and is approximately 300 feet -long by 75 feet -wide
2.
Surface Waters
2a
Name of nearest body of water (stream„ river, etc) to
Beetree Creek
proposed project
2b
Water Quahty,Classification of nearest receiwng,water
C
2c,
River basin map is available at
French Broad
http //h2o.enr state= us /adman /maps/
Page 3 of 12
PCN Form — Version 1.3 December 10, 2008 Version
3. Project Description
3a- Describe the existing conditions on the site and the general land use in the vicinity of the protect at the time of this
application
The Prolect'Site consists,of approximately 290 linear feet of'Beetree Creek between Warren Wilson Road and the
Swannanoa River The Site is adiacent,to the access road to Owen Park (west) and'a mostly wooded area owned by
Gods Way Baptist Church (east) Beetree Creek is a Class C stream with an approximate drainage area of 14 sq mi at
the Protect Site The - entire project area is within the 100 year floodplain and the associated regulatory floodway. The right
bank of Beetree Creek is severely eroded, near vertical. and 8,to 10 feet,high forroughly 150rfeet through the,Site. There
is strong evidence of channel migration toward to the Owen Park access road, at one location a storm drainage pipe
protrudes from-the eroded right bank by about 8 feet The left'bank of Beetree Creek through this reach is mostly stable
The left overbank region is thickly vegetated and.debris,strewn: much of this debris now acts.as a bamer to flood flows,
preventing ready access to the bulk of the mapped floodglain
The downstream portion of the voiect site is less severely degraded but there�is an area of'approximately 50 linear feet
with severe erosion and +undercutting along the left bank A large gravel bar'has formed from the right bank %,of theway
across the normal flow channel forcing all normal flows up against the eroding left bank
Land use in the vicinity of the Project Site is mixed with industrial, commercial, both high and low density residential, and,
forested open space
3b Ust'the total °estimated acreage of all existing wetlands on the property
01 acres (465 sq -ft). a small'linear area located'in floodplain on left bank
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property
Approximately 290 linear feet
3d Explain the purpose of the proposed project-
The purpose of the project is to stabilize a severely eroding stream bank and protect the existing access road to Owen
Park
3e Describe,the overall protect in detail, including the type °of equipment to be used
The,oroiect.will involve the reconstruction of the right bank of Beetree Creek for approximately 160 linear feet, two rock
(J -Hook) vane structures will also be,added in this reach.to further protect the stream bank and help reestablish bed form.
The proposed right, bank section will be about 10 % feet -tall in the severely eroded areas and will consist of a_boulder toe
,base (3'/ feet above stream bed or % bankfull), reinforced sod lift section (apwox 3 feet, above boulders or twice
bankfull), and a standard compacted sod section 'to the top (see plans and details attached) The - proposed bank section
will ,extend approximately 13 feet channelward of the existing stream bank in the'most�severely eroded areas
(downstream), towards the upstream end the proposed bank will taper back towards the existing bank The proposed
bank will be vegetated with herbaceous, species and live-stakes
Downstream of the proposed reconstructed right bank, the left bank will be stabilized; and a large gravel bar will be
partially removed This work will involve approximately 90 linear feet of channel and will consist of adding a few small
boulders and'cobbleto stabilize the undercut bank area and shaping,the remaihing eroded banks. The gravel /cobble bar
that has,formed in the right half of the channelwill be partially removed and shaped to align with the shifted channel
section upstream The thalweg will be shifted from the left bank to the center or right of center All disturbed areas on the
left bank will be stabilizedwith icoir matting and seeded6with a riparian seed mix (see attached plans and.details)
Construction seguenang will be specified to minimize the amount of instream work necessary (see attached)
Gravel /cobble berms will be installed,to isolate the work areas for the boulder toe wall and the left bank stabilization
activities, the construction of the,J -Hook vanes will need to occur in flowing'water
Page 4 of 12
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 prior phases) in the past?
❑ Yes ® No ❑ Unknown
Comments McGill Associates. Environmental Services
delineated a small area of wetlands on the left bank
4b
If the Corps made, the jurisdictional determination, what type
❑ preliminary ❑ Final
of determination was madel
4c
If yes, who delmeated'the jurisdictional areas?
Agency /Consultant'Company McGill Associates.
Environmental Services
Name (if known) Sean Martin
Other
4d
If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation
Data sheets and JD'forms attached
6.
Project History
Za
Have, permits or certifications been requested, or obtained for
❑ Yes ® No ❑ Unknown
this project (including all prior phases) in the�past?
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,5 of 12
C. Proposed Impacts Inventory
1. Impacts Summary
la 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 impact
Type of wetland
Forested
(Corps -404, 10
Area of impact
Permanent (P) or
(if known)
DWQ — non -404, other)
(acres)
Temporary
W1 ®P ❑ T
grading
npanan
❑ Yes
® No
® Corps
® DWQ _
001
W2 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑, DWQ
W3 El P C:1 T
❑ Yes
El Corps
❑ No
❑ DWQ
W4 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W5 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W6 '❑ P ❑ T
❑ Yes _
❑ Corps
❑ No
❑ DWQ
2g. Total wetland impacts
001
2h Comments `W1 is,a small area of wetlands within floodplam of'Beetree Creek; this area will be impacted_ by grading
activity'associated with,.shifting the channel east Wetland impacts to be permitted under a NWP -18
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
3g.
Stream impact
Type of impact
Stream name
Perennial
Type of jurisdiction
Average
Impact
number -
(PER) or
(Corps - 404, 10
stream
length
Permanent (P) or
intermittent
DWQ,— non -404,
width
(linear
Temporary (T)
(INT)?
other)
(feet)
feet)
S1 ®P ®T
Grading and fill
Beetree Creek
® PER
❑ INT
® Corps
®DWQ
40
290
S2 ❑ P ❑ T
❑, PER
❑ Corps
❑ INT
❑ DWQ
S3 ❑ P ❑ T
❑ PER
❑ Corps
'
❑ INT
❑ DWQ
S4 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑_DWQ
S5 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑, DWQ
S6 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
3h Total stream and tributary impacts
290
31 Comments, Stream Impacts arerassociated with channel bank reconstruction, associated channel shift, rock vanes, and
access Stream impacts,to be permitted under a NWP -27
Page 6 of 12
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 individually list all open water impacts below
4a
4b
4c
4d
4e
Open water
Name of waterbody
impact number —
(if applicable)
Type of impact
Waterbody type
Area of impact (acres)
Permanent (P) or
Temporary
01 ❑P ❑T
02 ❑ P ❑ "T
03 ❑ P' ❑ T
04 ❑ P'❑ T
0. Total open water,impacts
4g 'Comments
S. Pond or,Lake Construction
If pond or lake construction proposed, then complete the chart below.
5a
5b
5c
5d.
5e.
Wetland Impacts (acres)
Stream Impacts (feet)
Upland
Pond ID
Proposed use or purpose
(acres)
number
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
51 Expected pond surface area (acres)
5j Size of pond watershed (acres)
5k Method of construction
6. Buffer Impacts (for DWQ)
,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 you MUST fill out Section D of this,form
6a.
❑ Neuse ❑ Tar - Pamlico ❑ Other
Project is in which protected basins
❑ Catawba ❑ Randleman
6b
6c
6d
6e
6f
6g
Buffer impact
number —
Reason
Buffer
Zone 1 Impact
Zone 2 impact
Permanent (P) or
for
Stream name
mitigation
(square feet)
(square feet)
Temporary
impact
required?
131 ❑P ❑T
❑Yes
❑ No
B2 ❑P ❑T
❑Yes
❑ No
B3 ❑P ❑T
El Yes
❑ No
6h. Total buffer impacts
61 Comments
Page 7 of 12
D.
Impact Justification and Mitigation
1.
Avoidance and Minimization
1 a
Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The,'mitial proiect concept was to construct a concrete retaining wall adjacent to the Owens'Park access road and this
project moved all the way to bid phase before it was re- evaluated to see if a more natural approach could provide the
same level of protection The current plan reflects this more natural design approach The,current plan shows a hard
armored toebut with vegetated bio-engineered slopes above The existing stream alignment is causing accelerated, left
bank erosion downstream of the severely eroded-right bank,because the channel,has migrated to the right, there is a
sharp bend to the left that is causing the left bank problems The proposed work will shift the upstream portion of the
channel back to the left, eliminatinq the sharp bend and eliminating the stress on the left bank
b
Specifically describe measures taken to avoid or minimize the proposed`impacts through construction techniques
Beetree Creek'is too big to pump the flow around the work area but construction, sequencing will minimize the amount of
mstream,work needed to complete the,iob
2.
Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a
Does the project require, Compensatory Mitigatiomfor
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
projects
❑ Mitigation bank
❑Payment to in-lieu fee program
❑ Permittee Responsible Mitigation
3.
Complete If Using, a Mitigation Bank
3a
Nam&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 - npanan wetland mitigation requested
acres
4g
Coastal (tidal) wetland mitigation requested,
acres
4h Comments
Page,8 of 12
PCN Form — Version 1 3 December 10, 2008 Version
5. Complete if Using a Permittee Responsible Mitigation Plan
5a If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan
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? If yes, you will have to fill out this entire form — please
contact the State for more information
❑ Yes ® No
6b If'yes, then identify the square feet of impact,to each zone of the riparian buffer that,regwres mitigation. Calculate the
amount of mitigation required
Zone
6c
Reason for impact
6d
Total impact
(square,feet)
Multiplier
6e
Required mitigation
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1 5
6f Total buffer mitigation required:
6g If buffer mitigation is required, discuss, what type of mitigation is proposed (e g , payment to private mitigation bank,
permittee responsible npanan buffer restoration, payment into,an approved in -lieu fee fund)
6h Comments-
Page 9 of 12
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
❑ Yes ® No
within one of the NC Riparian Buffer Protection Rules?
lb
If yes, then is a diffuse flow1plan included? If no; explain why
❑ Yes ❑ No
Comments -
2.
Stormwater Management—Plan
2a
What is the overall percent imperviousness of this project?
0%
2b
Does this project require a Stormwater Management Plan?
❑ Yes ® No
2c
If this project DOES,NOT require a Storrnwater Management Plan, explain,why This is a stream bank stabilization „protect
and does not, involve any changes to impervious cover within the watershed
2d
If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of 'the plan.
❑ Certified Local Government
2e
Who will be responsible,for the review of the Stormwater Management Plan?
❑ DWQ Stormwater Program
❑ DWQ 401 Unit
3.
Certified Local Government Stormwater Review
3a
In which local government's jurisdiction, is this, project?
Buncombe
❑ Phase II
3b
Which of the following locally - implemented.stormwater management programs
❑ NSW
❑ USMP
apply °(check all'that apply)
❑ Water Supply Watershed
❑ Other:
3c Has °the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
4.
DWQ Stormwater Program Review
❑ Coastal counties
❑ HOW
4a
Which -of the following state - implemented stormwater management programs apply
❑ ORW
(check all that apply)
❑ Session Law 2006 -246
❑ Other
4b Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
5.
DWQ 401, Unit Stormwater Review
5a
Does the,Stormwater Management.Plammeet the appropriate requirements?
❑ Yes ❑ No
5b Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 10 of 12
PCN Form — Version 1,3 December 10, 2008 Version
F.
Supplementary Information
1.
Environmental Documentation (DWQ Requirement)
1,a
Does the project involv&an expenditure of public (federal /state /local) fundsor the
® Yes ❑ No
use of public (federal /state) land?
lb
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)?
1 c
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
❑ Yes ❑ No
letter )
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)
1
Cumulative Impacts (DWQ Requirement)
3a
Will,this project (based on past and reasonably anticipated future impacts) result in
❑ Yes ® No
additional development, which could impact nearby downstream water quality?
30
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
This,is a streambank stabilization project and will have no effect on the development
potential of surrounding properties
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 11 of 12
PCN Form — Version 1 3 December 10, 2008 Version
5. Endangered Species,and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or
❑ Yes ® No
habitat?
5b. Have you,checked with the USFWS concerning Endangered Species Act
❑ Yes ® No
impacts?
❑ Raleigh
5c. 'If yes, indicate the.USFWS Field Office you have contacted.
❑ Asheville
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
United States Fish and Wildlife Service- http- //wvvw.fws. gov/ raleigh /species/cntylisttbuncombe.html
6. Essential Fish Habitat (Corps Requirement)
6a: Will this,prolect occur in or near an area designated,as essential fish habitat?
❑ Yes 1Z 'No
6b. What data sources,did you use to determine whether your site would impact Essential Fish Habitat?,
National Oceanographic and Atmospheric Administration, Essential Fish Habitat Conservation and Protection Mapper
http: //ww*.habitat.noaa.gov/ protection /efh/habitatmapper .,htmi
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur1n ornear an, area that the,state, federal or tribal
governments have designated as,having „historic orcultural preservation
❑ Yes ® No
status (e.g , National Historic Trust.designation or properties significant in
North Carolina'history`and archaeology)?
7b. What data,sources did you use to determine whether your site would impact historic or archeologicalsesources?
North Carolina State Historic Preservation Office- http: / /gis.nedcr.gov /hpoweb/
8 -Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA- designated 100 -year floodplain?
® Yes ❑,No
8b If yes, explain how project meets FEMA requirements: Project in process obtaining a Floodpalain Development Permit
through the-Buncombe County Planning Inspections Department: a No-Rise certification is currently under=review.
8c. What;source(s) did you,use to make the floodplain determination? North Carolina Flood Mapping Program, Flood Risk
Information System- http: / /www ncfloodmaps.com/
CJ_ Ig
Applicant/Agents Printed Name
plicant/Agents Signature
Date
(Agents signatureft valid only if an authorization letter from the applicant
is' pmvided
Page 12 of 12
T _ 0.• ,
PROJECT NAME: BM7REE MM,BANK STABILIZA7ION
PROPERTY LEGAL DESCRIPTION: PIN# Mf392MBOO8tIiID
j cR it MU s� 1
sm' 1 i l:
Please Print
Paoperty.Owner /Representative: MR. JOEL BURTON --
-(If Representative) Title: P AP
The undersigned, regwbmW' property owners of the above noted property, do hereby authorize
(Name of oonsutting firm)
to act on my behalf and tike.ali actions nary for the processing, issuance and acceptance of
this permit or aon•and any and all standard and special condom ed-
property Owner's/Representative's Address (if'different than property above):
'telephone: 2122? ` g� 12 42L
We hereby certify the above information submitted In this application Is true and accutrabe-to the
bast of oar knowledge.
Authormed Signature
Date:
Env i-ron men taI Plan ninb Finance
McGill Associares. P.A. - 3769 Rowinger Road, Banner Elk. \"orrh Carolina _8604
Office: S2.5- 29 7-6946 - Fax: S28-291-2932
McGill
A S S 0( I A T L• S
AGENT AUTHORIZATION FORM
PROJECT NAME: Beetree Creek Stabilization Project
PROPERTY LEGAL DESCRIPTION: Easement for access road to Owen Park
PARCEL ID.
LOT NO.
LAN NO.
STREET ADDRESS: Easement along access road from Warren Wilson Road to Owen Park and
parallel to Beetree Creek — _
Please Print
Property Owner /Representative: Greg Isreal
(If Representative) Title: Buncombe County General Services Director
The undersigned, registered property owners of the above noted property, do hereby authorize
John C Vilas and Mark Cathy, PE of McGill Associates P.A.
(Contractor / Agent) (Name of consulting firm)
to act on my behalf and take all actions necessary for the processing, issuance and acceptance of
this permit or certification and any and all standard and special conditions attached.
Property Owner's/ Representative's Address (if different than property above):
200 College Street #300, Asheville NC 28801
Telephone: 828 - 250 -4233
We hereby certify the above information submitted in this application is true and accurate to the
best of our knowledge.
u horized Signature
Date: 7 /
Authorized Signature
Date:
Environinentitl ['lanninL, F1 na[11C
t
l
r
r 1
/
Sou c d by
�?
centerinies po(ovi N
ogy municipal l c i tlariZs ob - edr
--
ob�ugh N sp�t>a1 at portal. Parcel -undary
ed 6gh'�uncibe Coitnty -!ax
'
LOCATION MAP
PCN APPLICATION
August 2014
Beetree Creek Bank Stabilization
OMcGm
BUNCOMBE COUNTY, NORTH CAROLINA
A S S O C I A T P, S
ENGINEER ING-PLANN ING FINANCE
nYMDx110!•1 ASYhl1LLG W'DYYI M. 01Y LC!d1`s M9Y J1t'L:1.1'.INMI
ti\ t
_0 4 -1-1 IN IN
WOOD :so
J
j
.7'. 4
�A
OTEEN, N.C.
35082- E4 -TF -024
1962
PHOTOHEVISED 1990
DMA 4555 111 SW- SERIES V642
August 2014
Project Area
/f •
a
■
fl~ 1
•
FARM
f p
Vv
1
mop r
w r -4
t
.,0
M i + •
IL
r.
i�
• s
• IV
a 01
•.. ■■■■■1� /.N� J ■w■1M.
•N■...M •sN.KsM.N. ■/■ \
sag
•M 60 go.. ■1■Aq / M oM.. LM ■w N
\
Lq..MM.. ! V 4 to o" ... `�
W
U 250 500 1000 2000
+ f" FEET
TOPO MAP Beetree Creek Bank StabilizationPCN APPLICATION McGm
BUNCOMBE COUNTY, NORTH CAROLINA MASSOCIATES
ENGINEERING-PLANNING-FINANCE
551W DSMF .WWMM V[�, MMLM*91Ca4
35° 36' 45" N
Ni
35° 36' 39' N
370890
370710
370730
370750
370770
Soil Map — Buncombe County, North Carolina
(Beetree Creek Bank Stabilization)
370790
370810
370830
370850
371870
370890
370910
370930
370950
370690
3
N 0 15 30 60 90
A0 50 100 200 3C0Feet
Map prop: Web Mercator Corner coo-dilates: WGS84 Edge tics: UTM Zone 17N WGS84
370710
370730
370750
370770
Map Scale: 1:1,250 IF pitted on n landscape (11'' x 8.5') sheer.
370790
370810
t sD.:1 Natural Resources
Conservation Service
370830
370850
Web Soil Survey
National Cooperative Soil Survey
370870
370890
370910
370930
370950
A
A
�A
3
A
8/13/2014
Page 1 of 3
35° 3645' N
35° 36' 39' N
Sod Map — Buncombe County, North Carolina
(Beetree Creek Bank Stabilization)
MAP LEGEND
Area of Interest (AO1)
0 Area of Interest (A01)
Soils
Q Sod Map Unit Polygons
— Sod Map Unit Lines
Sod Map Unit Points
Speclal'Polnt Features
• Blowout
i;' Borrow Prt
X Clay Spot
Q Closed Depression
• Gravel Prt
• Gravelly Spot
Landfill
A. Lava Flow
• Marsh or swamp
5e Mine or Quarry
Miscellaneous Water
Perennial.Water
y Rock Outcrop
.¢. Saline Spot
°S. Sandy Spot
Severely Eroded Spot
• Sinkhole
$y Slide or Slip
• Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
SpecialiLme Features
Transportation
}}} Rads
wear Interstate Highways
• US Routes
Major Roads
— Local Roads
Background
® Aenal Photography
MAP INFORMATION
The soil surveys that compnse your AOI were mapped at 1 12,000
Warning Sod Map may not be valid at this scale
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
placement The maps do not show the small areas of contrasting
sods that could have,been shown at,a more detailed<scale
Please rely on the bar scale on each map sheet for map
measurements
Source of Map• Natural l,tesources Conservation Service
Web Sod Survey URL http / /websodsurvey.nres usda gov
Coordinate System Web Mercator (EPSG 3857)
Maps from the Web Sod Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area A projection that preserves area, such as the
Albers equal -area conic projection, should be used if more accurate
calculations of distance or area are required
This product is generated from the USDA -NRCS certified data as of
the version date(s) listed below
Sod Survey Area Buncombe County, North Carolina
Survey Area Data Version 9, Dec 14, 2013
Soil map units are labeled (as space allows)for map scales 1 50,000
or larger
Date(a) aerial images were photographed Oct 15, 2011 —Dec 9,
2011
The orthophoto or other base map on which the,soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps As a result, some minor shifting
of map unit boundanes may be evident
USDA Natural Resources
Conservation Service
Web Sod Survey
National Cooperattve,Sod Survey
8/13/2014
Page 2 of 3
Soil Map—Buncombe'County, North Carolina
'Map Unit Legend
Beetree Creek,Bank Stabilization
usDA Natural Resources Web Sod Survey 8/13/2014
M—M Conservation Service National Cooperative Sod ,Survey Page3 of 3
BeA
Billmore loamy sand, 0 to 3
00,
02%
percent slopes, occasionally
flooded
,IoA
lotla loam, 0 to 2 percent slopes,
02
66%
occasionally flooded
Ud
Udoithents, loamy
01
39%
.UfB
Udorthents-Urban land
22
876%
complex, 0 to 5 percent
slopes, occasionally flooded
Ux
1 Urban land
001
17%
Totals for Area of Interest
2.6
� -100.0%
usDA Natural Resources Web Sod Survey 8/13/2014
M—M Conservation Service National Cooperative Sod ,Survey Page3 of 3
b
z-�
0
z
0
m
0
z
0
0
r-
CfQ
N
uoi)izq igeIs /UL'g )aaJD aawag
goangD ;s! ;deg AgM s,PoJ
Buncombe County Right of Way
for access to Owen Park.
•
9689 -25- 2187 -00000
Gods Way Baptist Church
943 Warren Wilson Rd.
Swannanoa, NC 28778
Book/Page: 1944 / 0444
tr
Source: Buncombe County Tax Mapping, http: / /gis.buncombecounty.org/
Not to Scale
03
d
U
U
0
a
Z��a
dP-
0.
Z 03
F
Source: North Carolina Flood Risk Information System, http: / /www.ncfloodmaps.com/
Not to Scale
n
f '
God's Way Baptist Church RMcGM
PCN APPLIAPPLICATION ON
FLOOD MAP Sept. 2014 Beetree Creek Bank Stabilization
A S S O C I A T E S
BUNCOMBE COUNTY, NORTH CAROLINA ENGINEERING - PLANNING -FINANCE
srn.o mgr wa ua rc yoi Mrmiemn Ruu�.cuu,
J
a
?
Z 9
weJ5ad ameinsul poold IengeN
VWa-4
Z��a
dP-
0.
Z 03
F
Source: North Carolina Flood Risk Information System, http: / /www.ncfloodmaps.com/
Not to Scale
n
f '
God's Way Baptist Church RMcGM
PCN APPLIAPPLICATION ON
FLOOD MAP Sept. 2014 Beetree Creek Bank Stabilization
A S S O C I A T E S
BUNCOMBE COUNTY, NORTH CAROLINA ENGINEERING - PLANNING -FINANCE
srn.o mgr wa ua rc yoi Mrmiemn Ruu�.cuu,
Photo One: View looking to the north and upstream from the right eroded
bank of Beetree Creek. Access road to Owens Park is seen on the left side
of photo. Severe bank erosion is visible in the foreground. Mapped wetland
area is visible on the right side of photo in the dense vegetation; floodplain
wetland unit. Exposed stormwater pipe visible in center of photo.
Photo Three: View looking south and downstream on Beetree Creek.
Lower end of severe right bank erosion ending near the leaning tree. Riprap
material seen on the right has been put in as temporary streambank
armoring. Stream channel makes hard left turn near leaning tree which has
caused undercutting along the left bank downstream; not seen in photo.
Photo Two: View of severely eroded right bank on Beetree Creek. Exposed
stormwater pipe is visible. Pipe is damaged and will be repaired during
reconstructed bank stabilization.
Photo Four: View looking upstream fifty feet below where Photo Three
was taken; leaning tree can be seen in center of photo as a reference. Hard
turn in stream channel can be seen in background causing undercutting and
erosion of left bank on the right of photo. Additionally, large gravel bar can
be seen on the left side of photo; to be graded back removing obstruction.
PHOTO SHEET
PCN APPLICATION
Sept. 18, 2014
BEETREE CREEK
BANK STABILIZATION
BUNCOMBE COUNTY, NORTH CAROLINA
McGill
A S S O C I A T E S
ENVIRONMENTAL SERVICES
3764 ROMINOER RO. BANNER ELK. NC 28604 PH. (828)297 -6946
\\ \\ 1 / Illll \ 1 111 HARDWOOD 1b"
ll►1�111 ,/ i �\1 ` - -' Ily� 111 • \\ • ..an SS SEC CIO
11 1 I 1 / 1111 / /l 11 \\/� CiRO
11 I 1r /' j�\� i ill n1111 HA/ RLAOOPI, D- \ \
11111 I 11 \�\ '\ �n t11 \\ 1 \
_ II r `
I I11d1 I I„tit�` \� f 11�' r- �\OA� \32 \
111 �11 1\ `+ I II 1 • q Lpi}
1�^ 1�\ 11� I 1ill i 1 I \AK 36
�\ \'Illjl Normal �lowi �iI - \.`�i l\
I +111,4 \\ g111r Channel , 1I \J --I IRDw00D 35
I _
,1;1 +1 I 'I����� / ply 1 CHERRY 22" TRIPLE
Illi +l / 1 1 1 A i // 111i 1 1� - --
I\
1 \ •
1` \^1t1pra ate' -4,4 11 I
Asphalt Drive '�Pkk 1\ 1 }I11 I
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1 I�1 \\\
BOLLARD
1` •• \\ \� •
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It
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o � \\ \\ ,\
e• r • \ \\ y - _ SYCAMORE 15" SYCAMORE 10"
n\ \ \� • • X \/ rS�'Di 1irL�
1r 0 A' \ \ \ ` \ \ ■
\ \ \
• \ \
CHERRY 25 'WAD
•
•
•
•
LLARD
WALNUT 20"
^GROSS
BbPLAR 28"
BOLLARD
•
•
•
o
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POPLAR 20"
` ` \, LOCUST 6"
PO
\J AROWOOD 2•" A
SYCAMORE
\ \ \ \ \
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/ 1
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� \� I I \\
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•
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PLE
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GraOel Extent \ • `\ ` \`.��,� A-
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Graahic Scale Feet
0 10 20 40
1' Contour Interval
•
GRAVEL
■ • \
c
081 DEAD 11 �O�
18
SYCAMORE - 32"
•
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/
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CP/NL GPS RIK N
7\
'Brush /Debris Clearing Limits;
Large Trees Outside Gradir
Limits To Remain
Slid
1
1
WETLAND IMPAOT
\W -1
Boulder Toe Stabilization With
Reinforced Soil Lifts Area
(See Cross — sections and
Boulder Toe Detail)
Ex. 15" CMP— replace damaged
section, install with outfall on top
of proposed boulder wall. Additional
rock will be added below pipe if
invert is above boulder wall. (Refer
to Reconstructed Right Bank
Typical Section)
Gra•hic Scale Feet
10 20 40
1' Contour Interval
IMPACT TABLE
Stream Impact S -1: 265 I.f.
Wetalnd Impact W -1: 0.01 —ac.
(465 sf)
CONSTRUCTION NOTES
f
fit
P
1I
F
/
/
//1
Ii I
o\ \ /
Low Bank T801
\
Be Regrad�d \\` \
(See Stabilize . cci
Eroded Left �o� \
Bank Typical)
<(/
.\\
6)
1
Boulder Toe Area:
1) Rough grade new channel along left
side of stream.
2) Create a non — erodible berm to shift
flow left and isolate boulder toe area.
3) Install Boulder Toe Stabilization.
(Refer to Boulder Toe Stabilization with
Soil Lifts Above detail)
4) Simultaneously complete installation
of Soil Lifts above boulder toe (refer
to Boulder Toe Stabilization with Soil
Lifts Above detail) and installation of
two J —Hooks (refer to J —Hook Rock
Vane detail).
Left Bank Stabilization Area:
5) Use gravel bar material to
construct berm to isolate left bank
stabilization area and shift flow to the
right side of channel.
6) Add boulders in undercut bank area
and shape left bank.
7) Stabilize disturbed areas with coir
mat 40 or equivalent; seed with
temporary erosion control mix;
overseed with native riparian seed mix
(ERNST 304 or similar).
\, � .�eee40*
\" e ;
Proposeg\Grc <el
• ■
� \
Bar Rembv�.1 \
`
( ee Stabilize\ \\ \
Eroded Left \\
B1 nk Typical) \\ \\ \\ \�\�► "N� �\
P \
• N
\iv
\
\ '.
\ \ o�
\ N
_N \
\I
1J1
2154
2152
2150
2148
2146
2144
2142
2156
2154
2152
2150
2148
2146
2144
2142
Please note, Cross - sections 4
and 6 are outside the project
limits and are not shown on
permit drawings.
0 +00
0+20
0 +40
0 +60
0 +80
1 +00
1 +20
1 1 1
CROSS SECTION 3
CROSS SECTION 1
i
CROSS SECTION 2
SCALE'. HORIZ 1" =20
VERT.1'.2'
SCALE: HORIZ 1 "• 2e
VERT.1 "• T
SCALE: HORI2. 1" • 29'
VERT.1" • 2
1
/
Approximate
Bankfull
I
/
f
,—
/
Approximate
Bankfull
/
ompacted
Sol
Erosion
Control
Fill with
—
Approximate
Bankfull
Fill witty
'
I
aW
Sol
- Erosion
Control
Matting
Matting
Approximate
Bankfull
Existing
Streambed
1
1
_
7
\
/
1
r
j
Rein
Soil
orced
Lifts
Proposed
J -Hook
Rock Vone
Reinforced
Soil
- with
Lifts
Live
(See"
`
/
-with Live
Stakes (See
Detail)
Proposed
Streambed
:dr :.'. %. ~
'Pik >'
Pr.
e-4': -J
e-et'"
1
Boulder Toe
with Coarse
I,1
is.eP
,0
_ Aggregate
Backfill (see
Detail)
-.::.•
'-'• ∎'
`d-'/"
!� ;;
'�" F
Proposed
Streambed
Proposed
J -Hook
Rock Vone
-
Detail)
0 +00
0+20
0 +40
0 +60
0 +80
1 +00
1 +20
0 +00
0+20
0+40
0+60
0+80
1 +00
1 +20
2156
2154
2152
2150
2148
2146
2144
2142
1 +40
2154
2152
2150
2154
2152
2150
48 2148
2146
2144
2142
2146
2144
2142
2150
2148
2146
2144
2142
1 1 1
CROSS SECTION 3
I '-
CROSS SECTION 5
i
CROSS SECTION 2
SCALE'. HORIZ 1" =20
VERT.1'.2'
SCALE: HORIZ 1 ' • 20'
VERT.1 "• 2
SCALE: HORI2. 1" • 29'
VERT.1" • 2
1
/
Approximate
Bankfull
I
/
f
,—
/
Approximate
Bankfull
/
/
Compacted
Fill witty
/
I
'
I
Sol
- Erosion
Control
Matting
Approximate
Bankfull
� 1
1
_
7
/
•
Exist ng
Streambed
Proposed
J -Hook
Rock Vone
Reinforced
Soil
- with
Lifts
Live
(See"
0 +00
0+20
0+40
0+60
0+80
1 +00
1 +20
2156
2154
2152
2150
2148
2146
2144
2142
1 +40
2154
2152
2150
2154
2152
2150
48 2148
2146
2144
2142
2146
2144
2142
2150
2148
2146
2144
2142
0+00
0+20
0+40
0+60
0+80
1 +00
1 +20
1+40
1+60
I '-
CROSS SECTION 5
i
CROSS SECTION 2
SCALE: HORIZ 1 ' • 20'
VERT.1 "• 2
SCALE: HORI2. 1" • 29'
VERT.1" • 2
1
Approximate
Bankfull
,—
/
Compacted
Fill witty
/
I
Sol
- Erosion
Control
Matting
Approximate
Bankfull
—
_
/
Exist ng
Streambed
Proposed
Removal
Gravel
Reinforced
Soil
- with
Lifts
Live
(See"
Stakes
Detail)
I,1
-.::.•
'-'• ∎'
`d-'/"
!� ;;
'�" F
Proposed
Streambed
Boulder Toe
with Coarse
_ Aggregate
Backfill (see
-
Detail)
Proposed
Thalweg
Existing
Thalweg
0+00
0+20
0+40
0+60
0+80
1 +00
1 +20
1+40
1+60
0+00
0+20
0 +40
0+60
0 +80
1 +00
2150
2148
2146
2144
2142
2154
2152
2150
2148
2146
2144
2142
I '-
CROSS SECTION 5
SCALE: HORIZ 1 ' • 20'
VERT.1 "• 2
1
Approximate
Bankfull
,—
/
/
I
1
41
Existing
Gravel Bar
I
L
Proposed
Removal
Gravel
of
Bar
0+00
0+20
0 +40
0+60
0 +80
1 +00
2150
2148
2146
2144
2142
2154
2152
2150
2148
2146
2144
2142
2154
2152
2150
2148
2146
2144
2142
2: 1
0 ■
McGi Gri
A S S O C I A 1
L
0
Compacted
Soil Fill with
Erosion Control
Matting and
Seeding
CO
-••,J
=
CT
and Add
Species)
/\
Active
•_
N
U
D
I.
C
0
0
N
O
fn
0
Overbank
,�Floodplain
(Seed
Woody
High
Flow
and Mat)
Normal Flow
Channel
I (Non—
Vegetated)
Existing
//
/
Approx.
Bankfull
BEETREE CREEK
BANK STABILIZATION
BUNCOMBE COUNTY
NORTH CAROLINA
Reinforced
Soil Lifts
with Live
Stakes
Proposed
\
;j
j j
/ / / / / /AIIL
.•�.
O •
3! :..:.
,. .._.•
Ex. 15 CMP— replace;..:.
damaged section, install
with outfall on top of
proposed boulder wall.
Additional rock will be
added below pipe if
invert is above boulder
wall.
%rte
-41•
Boulder Toe
xl'�`! °'':'
��� , ;.
Fray _;^
with Coarse
Aggregate
Backfill
O-
0
CL
RECONSTRUCTED RIGHT BANK
TYPICAL SECTION
SEPTEMBER 2014
ems.
tir
all
Channel Shifted Left
— Match Existing
Thalweg Elevation
0 +00 0 +20 0 +40 0 +60 0 +80 1 +00 1 +20
2150
2148
2146
2144
2142
/
Active High
Flow (Seed
and Mat)
'�... C
•
,,Normal,�EFlowl
Channel ;);',"
''(Non; =, :; ,r,,
'Vegetated),`
–
`
'a-
Illo
Existing'
"Grassed,7;,.,„
'and `;Stable
�(
LOverbanIs , -- ;
;,Regio`n; ;;,
\
Proposed
—Ow
xistir
Gravel
Bar
g
Existing
Eroded and
Undercut
Bank
' ='
.•,:1
BUNCOMBE COUNTY
NORTH CAROLINA
•
--►
-
Regrade ;Gravel,
Shi ft" T ialweg
'Center. o Chann'el,7t'
Bar` _'
Toward:
"Add'Medi4m`,lBoulders,
n,Filli
in Undercut:; Area;
Voids °and 7ShaperwitKt,
G avef•,CotibleVateriar
Removed ±From Gravel
Bar;, Ma`ti,,and'A -' ;`
Revegetate °'Above, vati J;
Notmal:Flow :`L-'ine -4
-
- - TYPICAL SECTION
SEPTEMBER 2014
0 +00 0 +20 0 +40 0 +60 0 +80 1 +00
Erosion Control Mat
(See Notes)
•
•
•
•
2
1
Top of Bank
7!I
� Live
Stakes
Existing
Bank
Cross- section .- /
Boulder Dimensions Table
Description Dimension
Boulder Length 4 -6'
Boulder Width 2 -3'
Boulder Thickness 1 -2'
Dead Stout
Stakes
Coir Mat Geotextile
Wrapped Soil Lifts
(See Notes)
Approx. Bankfull
Temp Bench for
Construction Access
Approx.
Streambed Elev.
31 -41
Approx.
Normal Flow
Approx.
Streambed
Non -woven Filter Cloth
(See Notes)
Ballast Rock Backfill
Construction Notes
1. Grade. back streambank to allow access to toe of slope, create a
berm using non - erodible materials to isolate the work area to
prevent sedimentation of river.
2. Outer edge of boulder wall and top elevation of boulder wall
will be field located by engineer or designer.
3. Footer rocks for boulder wall shall be installed 2' below
streambed unless bedrock is encountered.
4. Geotextile non -woven filter fabric (Mirafi 1100N or similar)
shall be installed between boulder wall and soil bank, washed
ballast stone (3 -6 ") shall be placed behind boulderwall to fill
voids.
5. Construct boulder wall to deigned elevation; wall slope should
be roughly 0.5:1.
6. Place coir mat geotextile (900 Coir Mator equivalent) over
header boulder with back edge anchored behind boulders using
dead stout stakes. Set batter board with desired soil lift face
height (12 " -16 ") along front edge and drape coir mat
overhanging board. Place topsoil fill to designed vertical depth
(12 " -16 ") and,tamp firmly to 85 -90 percent standard Proctor
density (ASTM.D698) Pull coir mat back to existing slope face
covering soil lift(and staple at 2 -foot intervals. Repeat process
until designed soil lift section is complete. Maintain 2:1 slope
through soil lift section based on soil lift height and setback
distance between lifts.
7. Add topsoil fill above soil lift section in compacted layers to
tie into top bank elevation; maintain 2:1 slope. Stabilize with
erosion control mat (Double sided Straw Erosion Blanket) and
staked according to manufacturers recommendations Seed
topsoil fill slope and soil lift section with erosion control mix and
overseed with Native NC Mountains Riparian seed mix (ERNST
seed mix #304 or similar).
8. Live stakes shall be soaked in water 24 -48 hours prior to
installation. Live stakes shall be planted in the dormant season
(October 1 through May 1). Live stakes to be tamped into upper
edge of lift face at right angles to the slope, minimum depth of
18" with 6" of stake end protruding from the ground Live stakes
should be spaced at 2' intervals along soil lift horizontal rows.
Install Footer Boulders
Approximately 2' Below Streambed
Boulder Toe Stabilization with Soil Lifts Above: Live Stakes Revegetation
Not To
PCN'APPLICATION
Sept. 2014
BEETREE CREEK
BANK STABILIZATION
c Gill
Scale
A S S O C I A T E S
BUNCOMBE COUNTY, NORTH CAROLINA
ENVIRONMENTAL SERVICES
_
3761120141NUER RD R 2NNERELK NC 26604 PH MI) 297 6946
McGioll A S S O C I A T E S J -HOOK ROCK VANE DETAIL
ENVIRONMENTAL SERVICES
3764ROWNGERRD BANNER ELK, NC M604 (828)297 -6946
PLAN VIEW
1/3 1/3
BANKFULL BANKFULL
TOE OF BANK
o!-30* .B,
4 � 3
RLTER ,FABRIC I +
a DOTER ROCKS
COARSE BACKR
SILL STREAM
FLOW
ANCHOR SILL 4 -6'
INTO BANK BANKFULL M1DTH
PROFILE VIEW
VANE TOP ELEV
'BACKFILL BANKFULL
ELEVATION
VANE ARM
SLOPE 2 -5X
% ('A' / 'B')
CONSTRUCTION NOTES
1 Excavate trench ,along bottom of stream bed
to bankfull elevation on the stream bank for
rock vane. Trench depth should be excavated
to proposed footer elevation
1/3 2. Place one course of footer rocks to proposed
BANKFUU. footer depth (2' below streambed) No gaps
between boulders.
3. Install filter fabric, (Mirafi 1000N or equivilant).
4. Place coarse backfill upstream of footer
boulders (washed gravel or stream gravel).
5. Install header rocks on top of footer rocks so
that half of each header rock overlaps the
footer rock; header boulders should rest on
coarse baccfill. Header boulders should span
seams of footers. Offset the header rocks in
an upsteam direction. No gaps between
boulders.
6. Rode vane to intersect the stream bank, at or
near benkfull elevation (shown as 'A' on
details) Sill rocks to ,be embedded 4 -6 feet In
stream bank.
7. Hook boulders should be placed atop footer
boulders with a gap of approximate I to, I
— HEADER RO S boulder dimaeter (6 " —B') between each header
rock. Hook boulder terminal elevation per
design (shown as 'C' on details).
8. Filter fabric (Mirofi 1000N) shall be used Ito
seal the gaps between boulders and under
coarse bockfnll upstream of the vane arm. No
filter fabric should be visible in the finished
work; fold, tram. or tuck edges as needed.
MATERIAL SPECIFICATIONS_
1. Boulders: Footer and header rocks must be
large enough to achieve design height and
resist movement during peak flow events.
Boulders should be rectangular and uniform in
shape and size.
2. Coarse aggregate: Salvaged alluvial material
during trenching can be used or washed
railroad ballast
3 Filter fabric: 10 -12 oz. non —woven geo— textile
specific to aggregate separation (Miraft 1000N).
DIMENSION'S TABLE
DESCRIPTION DIMENSION
Boulder Leng 4-6'
Boulder Width 2 -3'
Boulder Thickness 1 -2'
Bankfull Elevation To Be Determined
Vane Arm ,Length 50'
Vane Arm Top Elevation 'A' To Be Determined
Vane Arm, Terminal Elev. 'B' To Be Determined
Sill Length 4 -6'
Vane Arm Angle to Stream Bank 20 -30 degrees
Vane Arm Slope to Stream Bed 3 -5%
Hook Terminal Elevation 'C' To Be Determined
VANE Hook Boulder Gap Width 6 -8"
TERMINAL
ELEV.
'B' r, NORMAL 'C' HOOK TERMINAL ELEV
2' BELOW STREAMBED ELEVATION
NC IDWO Stream Identification Form Version 4.11
Date: g_ - )c
=
Project/Site: gee-�cee G «�
,zc
,Latitude: 39, (o tao
n
Evaluator: 1 `l
S_ trong
County: 3wJc.o Mid
Longitude: Sa ,
Total Poirds:
1
Stream Determination (cir
Other fee} cee
Stream is at least intermittent
if 2:19 or perennial if 2:30*
4
Ephemeral Intermttten Perennial
e.g Quad Name: 4'`2e k
A. Geomorphology Subtotal
=
Absent
Weak
Moderate
S_ trong
18 Continuity of channel,bed and'tiank
19. Rooted upland plants in strearj
0
1
2
3
2. Sinuosity of channel along thalvbeg
0
0
1
2
3
3. In- channel structure: ex. rifflel*l,
n I ool sequence
step -pool,
0
1
2
1.5
4. Particle size of stream substrate
0
1
2'
3
5. Active /relict floodplain
_ _ _
0
1
2
3
6. Depositional'barsfor benches
LOO
0
1
2
3
7. Recent alluvial deposits
0
0
2
3
8. Headcuts
_
0
1
2
3
9. Grade - control
1.5
0
0.5
1
1.5
10. Natural valley
0
0.5
1 _
1.5
11. Second or greater order chanriei
No = 0
=
a arty iaal ditches are not rated; see discussibns,in
B_ Hvdroloav (Subtotal = -A
manual
. S )
12. Presence of Baseflow
I
0
1
2
G
13. Iron oxidizing bacteria
19. Rooted upland plants in strearj
0
1
2
3
14. Leaf litter
0
1.
1
0.5
0
15. Sediment on plants or debris
2
0
0.5
1
1.5
16. Organic debris lines or piles
0
0.5
1
1.5
17. Soil =based evidence of high woter
table?
N6=0
Yes = 3
C.' Bioloav (Subtotal = it U� G 1
18. Fibrous roots in streambed
2
1
0
19. Rooted upland plants in strearj
bed
3
2
1
0
20. Macrobenthos (note dnrersitylan6
abundance)
0
1
2
3
21. Aquatic Mollusks
0
22. °Fish
_
0.5
1
1.5
23. Crayfish
LOO
0.5
1
1.5
24. Amphibians
0
0
1
1.5
25. Algae _
0
0.
1
1.5
26. Wetland plants in streambed
FACW = 0.75; OBL = 1.5
Other c= 0
.perennial streamssmay also'be idenofied
using -other methods. Seep. 35 of manual.
Notes: I
Sketch: