19970149 Ver 1_COMPLETE FILE_19970324

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AMPAD REORDER
O EFFICIENCY" #23-006
_AORANDUM PRINT NAMES :
Reviewer:_( ,gC-?
'0 : '3?0 w WQ SUPV.:
ENVIRONMENTiL SCIENCES BRANCH DATE: q 7
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
***EACH ITEM MUST BE ANSWERED (USE N/A FOR NOT.APPLICABLE) ***
PERMIT YR: 97 PERMIT NO: 0000149 COUNTY: MECKLENBURG
APPLICANT NAME: LONG CREEK IMPROVEMENTS
PROJECT TYPE: STREAM STABILIZATION PERMIT TYPE: NW 13
COE #: DOT. #:
RCD FROM CDA: APP DATE FRM CDA: 02/21/97
REG OFFICE: MKL,
- -
IVER AND SUB-BASIN_#: 030834 STR INDEX N0: 11-120-(2.5)
STREAM CLASS: WS-IV
WL-IMPACT?: Y/N WL TYPE:
WL REQUESTED: WL_ACR-EST?: Y/N
WL SCORE(#): WATER IMPACTED BY FILL?: Y
/N
MITIGATION?: Y/N
MITIGATION-TYPE:
MITIGATION-SIZE: DID YOU REQUEST MORE INFO?: Y/N
IS WETLAND RATING SHEET ATTACHED?: Y/N
HAVE PROJECT CHANGES/CONDITIONS BEEN DISCUSSED WITH APPLICANT?: Y/N
RECOMMENDATION (Circle One): ISSUE ISSUE/COND DENY
COMMENTS: L?A S 1 SUF-t Q-t/
w. ?
O gi t 16(/eNl,?6z, 77bs A-P1Q/ C,1l o rJ 7-0 7 4tL
c : Regional Office
Central Files
State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
& ffl?.IWA
IT 0
C) EHNR
April 3, 1997
Mecklenburg County
DWQ Project # 970149
APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDITIONS
Mr. David K. Morton
Project Manager
Mecklenburg County
700 N. Tryon Street
Charlotte, NC 28202
Dear Mr. Morton:
You have our approval, in accordance with the attached conditions and those listed below, to place fill
material in 2.99 acres of waters for the purpose of stabilizing the streambank of Long Creek, as you described
in your application dated 17 February 1997. After reviewing your application, we have decided that this fill is
covered by General Water Quality Certification Number 3102. This certification allows you to use
Nationwide Permit Number 13 when it is issued by the Corps of Engineers.
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 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). For this approval to be
valid, you must follow the conditions listed in the attached certification and any additional conditions listed
below. A twenty-five foot wide buffer of trees shall be planted along the uppermost edge of the streambank
where a wooded buffer does not exist and the County owns the property or has an easement. 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.
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 a written
petition which conforms to Chapter 150B of the North Carolina General Statutes to the Office of
Administrative Hearings, P.O. Box 27447, Raleigh, N.C. 27611-7447. This certification and its conditions
are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water
Act. If you have any questions, please telephone John Dorney at 919-733-1786.
prrei?y,
ton o , Jr. P. .
Attachment °
cc: Wilmington District Corps of Engineers
Corps of Engineers Asheville Field Office
Mooresville DWQ Regional Office
'Mr. John Dorney
Central Files
Michael Brennan; Woolpert & Associates 970149.1tr
Division of Water Quality - Environmental Sciences Branch
Environmental Sciences Branch, 4401 Reedy Creek Rd., Raleigh, NC 27607 Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer • 50% recycled/10% post consumer paper
ER 97-8589
Ar" ,?' (

Received 2/24/97
Due 3/10/97 RECEIVED
MAR 2 6 1991.E
ENVIRONMENTAL SCIENCE'S
BRANCH
North Carolina Department of Cultural Resources
James B. Hunt Jr., Governor
Betty Ray McCain, Secretary
PPLICANT:
Project Location:
NATIONWIDE PERMIT REVIEW
Michael W. Brennan II, P.E.
Project Engineer
Woolpert
8731 Red Oak Boulevard, Suite 101
Charlotte, NC 28217-3958
MECKLENBURG
Proposed Project: Long Creek Channel Stabilization
Division of Archives and History
Jeffrey J. Crow, Director
-3h-2M
We have received the application for the above project from the Applicant and our
comments are noted below.
Additional information is needed (maps, photographs, other).
No comment.
We have reviewed the requested information and have no comment.
Signed .
Ren a Gledhill-Earley
Environmental Review Coordinator
Historic Preservation Office
919/733-4763
FAX [phone]
Date 3 1 7
FES 2 5 1007
0 7 r 91 97
109 East Jones Street • Raleigh, North Carolina 27601-2807
g??
Transmittal Letter
WOOLPERT LLP
8731 Red Oak Boulevard, Suite 101
Charlotte, North Carolina 28217-3958
Phone [phone] 3
Fax [phone]
To:
Karen Lynch
NC DEHNR, DWQ
4401 Reedy Creek Road
Ralegih, NC 27607
March 24, 1997
75-22280-01
Re: Long Creek Nationwide Permit App.
We are sending you attached:
RECEIVED
MAR 2 b 1997.
ENVIRONMENTAL SCIENCES
r)gANr,H
Copies Date No. Description
6 3/24/97 1 Copy of Nationwide 13 Permit Application for Long Creek
1 3/24/97 2 Copy of response from NC Dept. Of Cultural Resources for above
mentioned project.

Remarks:
Karen,
Sorry about the mistake. I have included a response from the NC Department of Cultural Resources as
required by the Nationwide Permit Application. Please let me know if you need any additional information.
Thanks,
Mike
Copy to: Signed: -'?I?G?-?---- - T
file Michael W. Brennan II, PE
If enclosures are not as noted, please contact us immediately.

e TF+`"a ACTION ID-
DEM ID: L 1
13
Nationwide Permit Requested (Provide Nationwide P: rmit '#):
JOINT FORM FOR
Nationwide permits that require notification to the Corps of Engineers
Nationwide permits that require application for Section 401 certification
WILMINGTON DISTRICT ENGINEER WATER QUAIM O ENYIRPLANNING
Ai-MANAGEMENT
CORPS OF ENGINEERS P.OO. . Box ox 1890 1890 DIVISION NC DEPARTMENT OF ENVIRONMENT, HEALTH,
MENT OF THE ARMY AND NATURAL RESOURCES RECEIVED
D
Wilmington, NC 28402-1890: RO NC5 27626-os3s MAR 2 6 19911 -
ATIN: CFSAW- ?-?: MR JOHN DORNEY
Telephone [phone] Telephone [phone] ENVIRONMENTAL SCIENCES
BRANCH
ONE (1) COPY THIS U BE SEAT ? N.DIVISION OF ENVIRON THE MENCORPS TAL OYFANEiGEN
? ?i-
.
s>rvErt C7) COPIES SHOULD
PT F ASE PRINT.
1. Owners Nye. Mecklenburg Count N
2. Owners Address: 700 North Xrybn Street
(yo,k); [phone]
3. Owners Phone Number (Home): .
4. If Applicable: Agent's name or responsible corporate official, address, phone number.
David K. Moito
700 North Tryon Street, Charlotte, NC 28202
(7)4) 336-3871
5. Location of work (MUST ATrACH MAP)- County. Mprk1 nb trg oun ?,y., Nr .
Nearest Town or City: Charlotte
Socciiic Location (Include road numbers, landmarks, etc.): Long Creek from Bellhaven Road for
approximately
6, Name of Closest SIieam/River: Lon Creek
7. River Basin: Catawba
8. Is this project located in a watershed classified as Trout, SA, HQW, ORW, WS I, or WS II? YES (] N0 Lx)
.9. Have any Section 404 permits bin previously requested for use on this property? YES (] h0 ? ]
If yes, e=lain.
10. Estimated total number of acres of waters of the U.S., including wetlands, located on project site: N /A
11. Number of acres of waters of the U.S., including wetlands, impacted by the proposed project:
Filled; 2.99 AC Some - -Incl. Fish
n ancement Structures
Drained:
Flooded:
Excavated: 2.99 AC
Total Impacted: -

12. Description of proposed work (Attach PLANS-8 112" X 11" drawings only): Channe 1 Bank s t ^h i 1 ; z a r, Y
o es.
to include Ri -
Some limited full bank Ri -Ra °
-
13. purpose of proposcdwork: Erosion control for existing Prnaitin anA = rntct•ti nn_ as^!ncr f„rther
erosion on the ch mne banks*
14. State reasons why the applicant believes that this activity must be carried out in wetlands. Also, note measurts
taken to minimize wetland impacts.- No im -
project limits.
13. You are required to contact the U.S. Fish and Wildlife Service (USFWS) andlorNadonal Marine Fishencs Service
(IN&IFS) regarding the presence or any Federally listed orproposed foriisting endangered orthreatened species or Kcal
habitat in the permit area that may be affected by the proposed project.. Have you done so? YES ] NO
RESPONSES FROM THE USFWS AND/OR NMFS SHOULD BE FORWARDED TO CORPS. (see encl. 1 e t t er )
16. You are required to contact the State Historic Preservation Oaten (SHPO) reg-arumg the prscnce of hsonc
properties in the permit area which may be affected by the proposed project? Have you done so? YES (X] '.NO[
PMSPONSE FROM THE SHPO SHOULD BE FORWARDED TO CORPS. (see enclosed letfer)
17. Additional information acquired by DE?ri: '
A. Wetland delineation map showing all wetlands, scams, and lakes on the properryLong Creek depicted on
e--t.n/aattached sheets)
B. If available, representative photograph of wetlands to be impacted by prof
C. If delineation was performed by a consultant, include all data sheets rclevant to the placement of the
delineation line. n /a
D. If a stormwatermanagement plan is required fcr this project, attach copy.n/a
E. What is land use of surrounding property?Rees; d P^t; ' ?" a a tndevelo_ped
F. If applicable, what is proposed method of sewage disposal? n /a
Ovx•nerr's Signature Date
WOOLPERT
Client:
Subject: Order No.:
Computed by: Gy?t Date: ID-2-3 : -Checked by:
Date:
1 ' "-t_? I • H W! - 1Z?1 /?'? i [ . 1 FV!'?? j I '

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LIVE STAKING

Purpose:
The purpose of live staking, is to provide a protective vegetation cover on the creekbank. Live
staking, also provides an extensive root system that strengthens the bank, and growth of the
plants over the creek improves the aquatic habitat by providing shade.
Approach:
The approach is to plant the area with live dormant shrub or tree cuttings that will take root and
grow. Plant species selected have extensive fibrous root systems. These root systems bird the
soil and stabilize the bank. The stems also slow the flow of water next to the soil and reduce
the erosive forces.
The approach for live staking is to separate the suitable species into two planting, zones defined
as:
Frequently Flooded: The section of the bank below the depth of flow representing the
2-year event. Plants selected should be tolerant of frequent
flooding and not serve as an obstacle to flow in the channel.
Infrequently Flooded: The section of bank above the 2-year flow. Plants in this zone
will experience infrequent flooding, and generally drier conditions.
Limitations/Restrictions:
Live staking requires shrubs and trees that will grow from live dormant cuttings. The plant
materials should be native to the area, and can be obtained either by harvesting local stocks or
from a nearby nursery. If local stocks are used, they must be harvested when dormant and
either planted immediately or placed in cold storage until needed.
The plant materials will take one season to establish; grasses could be seeded in to provide some
interim erosion control. The area should be protected during this period from foot tragic a--?d
wildlife predation of the plantings.
Procedure:
1. Material:
A. Live staking plant materials must be from dormant shrubs or trees that will root
well from cuttings and are appropriate for the hydrologic zone in which they are
planted. For example, black willow, silky dogwood and elderberry all generally
root well and may be planted in either zone.
DRAFT 44 Mecklenburg County Storm Water Services
Channel Restoration Standards
Cuttings should not be smaller than 1/2 inch in diameter and not greater than 2
17 inches in diameter. Recommended staking materials for the two planting zones
may include:
2.
Frequently Flooded:
1. black willow (Sall: nigra), tree, 80-100 ft.
2. silky dogwood (Cornus amomum), shrub, to 10 ft.
3. elderberry (Sambucus canadensis), shrub, to 12 ft.
4. cottonwood (Populus deltoides), tree, to 100 ft.
5. tag alder (Alnus serrulata), shrub, to 15 ft.
6. spicebush (Lindera benzoin), shrub, to 10 ft.
6. arrowwood viburnum (Viburnum dentatum), shrub, to 10 ft.
7. yellow-root (Xanthorhiza simplicissima), spreading shrub, 2-3 ft.
Infrequently Flooded:
1. black willow (Salix niara), tree, 80-100 ft.
2. silky dogwood (Cornus amomum),shrub, to 10 ft.
3. elderberry (Sambucus canadensis), shrub, to 12 ft.
4. coral berry (Symphoricarpos orbiculatus), shrub, to 3 ft.
5. groundselbush (Baccharis halimifolia), shrub, to 12 ft.
6. arrowwood viburnum (Viburnum dentatum), shrub, to 10 ft.
7. shadbush (Amelanchier arborea), tree, to 40 ft.
8. redbud (Cercis canadensis), tree, to 40 ft.
Eauiument:
A. A saw, loppers, and pruning shears to collect and prepare stakes;
B. A steel rod or rebar of slightly smaller diameter than the cuttings to be planted
(multiple rods may be required). A small sledge hammer(s) may be required
to pound the rod(s) for the pilot holes;
C. A dead blow hammer to drive the live stakes.
3.
Planting:
A. Squarely cut live dormant curdngs into approximately 12-inch lengths for cunnings
3/4 inch or less in diameter, 12- to 18-inch lengths for cuttings 3/4 to 1 1/2
inches in diameter, and 2-foot lengths for cuttings 2 inches in diameter. Pruning
shears or a similar tool should be used for small cuttings and a saw should be
used for large cuttings. An ax should not be used to cut plant materials because
it damages the bark too much. Sharpen the basal end of larger cuttings for ease
in pounding.

DRAFT 45 Mecklenburg County Storm Water Services
Channel Restoration Standards
B. In stiff or compacted soils, create a pilot hole for the cutting using a rod. The
pilot hole should be about 2/3 the length of the cutting and be slightly smaller in
diameter. Do not wobble the rod to remove it as this overenlarges the pilor••hole.
C. The holes should be staggered and placed in a diagonal pattern. Live stakes
should be planted on about 3-foot centers.
D. Live stakes must be planted the same day they are harvested or removed from
storage. Cuttings must be kept moist until used. If the cuttings are not driven
the same day, store the cuttings in cold storage until time to plant.
E. Insert one of the cuttings into each pilot hole with the bud tip.pointing upward.
Drive or push the live stake into the ground until a minimum of 2 buds remain
above the ground. Tamp the surrounding soil firmly around the cutting. Live
stakes may be driven using a dead blow hammer.
F. Replace any cuttings that split or become damaged during placement with new
cuttings.
4. Maintenance:.
A. Provide necessary watering at time of planting and for a period of 30 days
afterwards. Provide sufficient water to maintain a moist condition in the root
zone.
B. Provide moisture penetration throughout the entire root zone with a minimum of
surface runoff.
Optional:
Live staking can be used in conjunction with other channel restoration techniques where there
is a need to establish shrubs or trees. Live staking should begin about 1 foot above the normal
water level in the creek. Flood-tolerant species should be used where inundation is frequent.
Trees and shrubs selected for planting near creeks should not restrict conveyance in the charnel,
thereby increasing flooding potential. Small s'a rubs with supple stems should be used in channels
less than 15 feet wide. Larger trees can be used in wider channels but these should be spaced
farther apart. The larger spacing can be accomplished by periodically thinning the original
planting until the desired spacing is obtained.
DRAFT 46 Mecklenburg County storm water Services
Channel Restoration Standards
A 70P OF BANK
d d
C? d d t E STAKES
(1YP.)
d d d d d? d
d
d d d
o°°
0° °0 0° 002 0. °
°°0°8° °° s I V° .0° TOE OF B14K
°o °
.-c ° sPECM °
FLOW
A
PLAN VIEW
NOT TO SCALE
FINISHED GR,%E
EROSON CONTROL
MATERL+L?
oasnNG CHANNEL BOTTOM
iI
NORMAL
WA LEVEL
REVISIONS
BURY A UINIMULI
OF 8" (TYP•)
PLANT SPACING SAS ON
TYPE OF VEGETATION
AND SITE CONDalONS.
SECTION A-A
APPROVAL DATE
MECKLENBURG STORM WATER SERVICES FEB 1996
CHANNEL RESTORATION STANDARDS
STO. NO. REV.
LIVE STAKING 12
Transmittal Letter
WOOLPERT
8731 Red Oak Boulevard, Suite 101
Charlotte, North Carolina 28217-3958
Phone [phone]
Fax [phone]
To:
Karen Lynch
NC DEHNR, Division of Water Quality
P.O. Box 27687
Raleigh, NC 27611
We are sending you attached:
® Plans
® Other
RECEIVED
-SW I'
ENWRQNW, SCIENCES
'^"^u
Copies Date No. Description
1 9/12/96 1 Copy of Letter to Steve Lund, US Army COE, Asheville
1 9/12/96 1 Copy of Plan Sheets Showing Preliminary Design of Stabilization
Measures on Long Creek
1 9/12/96 1 Vicinity Map
1 9/12/96 1 Figures showing typical improvements

Remarks:
Karen,
We wanted to run this by you as well. Your comments will be greatly appreciated and should help us when
we begin the permitting process.
Please feel free to call at your earliest convenience if you need additional information or have any
questions/concerns.
Copy to:
file
September 12, 1996
75-22280-01
Re: Long Creek Channel Stabilization
Michael W. Brennan II
Signed:
If enclosures are not as noted, please contact us immediately.
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LIVE STAKING
1
Purpose:
The purpose of live staking is to provide a protective vegetation cover on the creekbank. Live
staking also provides an extensive root system that strengthens the bank, and growth of the
plants over the creek improves the aquatic habitat by providing shade.
Approach:
The approach is to plant the area with live dormant shrub or tree cuttings that will take root and
grow. Plant species selected have extensive fibrous root systems. These root systems bind the
soil and stabilize the bank. The stems also slow the flow of water next to the soil and reduce
the erosive forces.
The approach for live staking is to separate the suitable species into two planting zones deigned
as:
Frequently Flooded: The section of the bank below the depth of flow representing the
2-year event. Plants selected should be tolerant of frequent
flooding and not serve as an obstacle to flow in the channel.
Infrequently Flooded: The section of bank above the 2-year flow. Plants in this zone
will experience infrequent flooding, and generally drier conditions.
Limitations/Restrictions:
Live staking requires shrubs and trees that will grow from live dormant cuttings. The plant
materials should be native to the area, and can be obtained either by harvesting local stocks or
from a nearby nursery. If local stocks are used, they must be harvested when dormant and
either planted immediately or placed in cold storage until needed.
The plant materials will take one season to establish; grasses could be seeded in to provide some
interim erosion control. The area should be protected during this period from foot traffic and
wildlife predation of the plantings.
Procedure:
1. Material:
A. Live staking plant materials must be from dormant shrubs or trees that will root
well from cuttings and are appropriate for the hydrologic zone in which they are
planted. For example, black willow, silky dogwood and elderberry all generally
root well and may be planted in either zone.
,. Y
DRAFT 44 Mecklenburg County Storm Water Services
Channel Restoration Standards
Cuttings should not be smaller than 1/2 inch in diameter and not greater than 2
inches in diameter. Recommended staking materials for the two planting zones
may include: -
Frequently Flooded:
1. black willow (Saliz nigra), tree, 80-100 ft.
2. silky dogwood (Cornus amomum), shrub, to 10 ft.
3. elderberry (Sambucus canadensis), shrub, to 12 ft.
4. cottonwood (Populus delroides), tree, to 100 ft.
5. tag alder (Alnus serrulata), shrub, to 15 ft.
6. spicebush (Lindera benzoin), shrub, to 10 ft.
6. arrowwood viburnum (Viburnum dentatum), shrub, to 10 ft.
7. yellow-root (Xanthorhiza simplicissima), spreading shrub, 2-3 ft.
Infrequently Flooded:
1. black willow (Saliz nigra), tree, 80-100 ft.
2. silky dogwood (Cornus amomum),shrub, to 10 ft.
3. elderberry (Sambucus canadensis), shrub, to 12 ft.
4. coral berry (Symphoricarpos orbiculatus), shrub, to 3 ft.
5. groundselbush (Baccharis halimifolia), shrub, to 12 ft.
6. arrowwood viburnum (Viburnum dentatum), shrub, to 10 ft.
7. shadbush (Amelanchier arborea), tree, to 40 ft.
8. redbud (Cercis canadensis), tree, to 40 ft.
2
3.
EauiDment.
A. A saw, loppers, and pruning shears to collect and prepare stakes;
B. A steel rod or rebar of slightly smaller diameter than the cuttings to be planted
(multiple rods may be required). A small sledge hammer(s) may be required
to pound the rod(s) for the pilot holes;
C. A dead blow hammer to drive the live stakes.
Planting:
A. Squarely cut live dormant cuttings into approximately 12-inch lengths for cunmgs
3/4 inch or less in diameter, 12- to 18-inch lengths for cuttings 3/4 to 1 1/2
inches in diameter, and 2-foot lengths for cuttings 2 inches in diameter. Pruning
shears or a similar tool should be used for small cuttings and a saw should be
used for large cuttings. An ax should not be used to cut plant materials because
it damages the bark too much. Sharpen the basal end of larger cuttings for ease
in pounding.
DRAFT 45 Mecklenburg County Storm Water Services
Channel Restoration Standards
B. In stiff or compacted soils, create a pilot hole for the cutting using a rod. The
pilot hole should be about 2/3 the length of the cutting and be slightly smaller in
diameter. Do not wobble the rod to remove it as this overenlarges the pilor--hole.
C. The holes should be staggered and placed in a diagonal pattern. Live stakes
should be planted on about 3-foot centers.
D. Live stakes must be planted the same day they are harvested or removed from
storage. Cuttings must be kept moist until used. If the cuttings are not driven
the same day, store the cuttings in cold storage until time to plant.
E. Insert one of the cuttings into each pilot hole with the bud tip pointing upward.
Drive or push the live stake into the around until a minimum of 2 buds remain
above the ground. Tamp the surrounding soil firmly around the cutting. Live
stakes may be driven using a dead blow hammer.
F. Replace any cuttings that split or become damaged during placement with new
cuttings.
4. Maintenance:
A. Provide necessary watering at time of planting and for a period of 30 days
afterwards. Provide sufficient water to maintain a moist condition in the root
zone.
B. Provide moisture penetration throughout the entire root zone with a minimum of
surface runoff.
Optional:
Live staking can be used in conjunction with other channel restoration techniques where there
is a need to establish shrubs or trees. Live staking should begin about 1 foot above the normal
water level in the creek. Flood-tolerant species should be used where inundation is frequent.
Trees and shrubs selected for planting near creeks should not restrict conveyance in the channel,
thereby increasing flooding potential. Small shrubs with supple stems should be used in channels
less than 15 feet wide. Larger trees can be used in wider channels but these should be spaced
farther apart. The larger spacing can be accomplished by periodically thinning the original
planting until the desired spacing is obtained.
D R A FT 46 Mecklenburg County Storm Water Services
Channel Restoration Standards

A 41--1
J
STAKES
OF BANK
FLOW ?
A
PLAN VIEW
NOT TO SCALE
FINISHED GRADE
EROSION CONTROL
EXISTING CHANNEL BOTTOM
NORMAL
WATER LEVEL 1
i' 1
SECTION A-A
TAO OF BANK
BURY A MINIMUM
OF Cr (TYP.)
PLANT SPACING BASED ON
TYPE OF VEGETATION
AND SITE CONOITKNdS.
APPROVAL DATE
REVISIONS MECKLENBURG STORM WATER SERVICES
FEB. R 9 -
o NO. DATE DESCRIPTION CHANNEL RESTORATION STANDARDS
rn STD. NO. REV.
?? LIVE STAKING 12
L
RECEIVED
FEB 2 1 1997,
ENVIRONMENTAL SCIENCES
PRANCH
WOOLPERT
February 17, 1997
ATTN: David Brook
Deputy State Historic Preservation Officer
North Carolina Department of Cultural Resources
109 East Jones Street
Raleigh, NC 27601-2807
Re: Long Creek Channel Stabilization
Mecklenburg County, NC
Nationwide Permit Application
Dear Mr. Brook:
Mecklenburg County Engineering and Building Standards has contracted Woolpert to design
channel stabilization measures for a segment of Long Creek in Northwest Mecklenburg County,
USGS quad Mountain Island Lake (see enclosed vicinity map). The project's overall length is
approximately 6,850 linear feet with the upstream terminus at Bellhaven Road (also known as
Rozzelles Ferry Road). The project impact area (maximum) extends approximately 35 feet from
the existing top of banks on both sides of the creek (this includes a 30 foot temporary construction
easement and an approximate distance of 5 feet for sloping the banks back).
In the course of our preliminary design analysis, Woolpert conducted several field walks with
individuals from various regulatory agencies including Steve Lund of the US Army Corps of
Engineers. Karen Lynch of the NCDEHNR's Division of Water Quality and Owen Anderson of
the NC Wildlife Resources Commission. The result of these field walks and extensive design
analysis yielded a design solution that typically includes riprap protection for the toe of the slope
and vegetative matting for the remainder of the bank slope. Approximately 10% of the project
stream banks will be left "as is." In some high velocity areas, a full bank riprap solution will be
applied. A key design element involves the efforts to preserve canopy trees in the construction
corridor. Live staking on the channel banks will be performed by Mecklenburg County after
construction.
As part of the application for a Nationwide Permit, we are required to contact your agency
regarding the presence of any historic properties in the permit area that may be affected by the
proposed project. Any response provided will be forwarded to Steve Lund of the US Army Corps
of Engineers' Asheville Regulatory Office.
WOOLPERT LLP
8731 Red Oak Boulevard, Suite 101 • Charlotte, North Carolina 28217-3958
704.525.6284 • Fax: [phone] • www.woolpert.corn
or .M
ATTN: David Brook
February 17, 1997
Page 2
Please call me at your earliest convenience if you have any questions or need further information.
Sincerely,
WOOLPERT
L
Michael W. Brennan II, PE
Project Engineer
Enclosure
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WOOLPERT
Effective Solutions ? ? ? ........ . ............................. . .............................. . ........ .
September 10, 1996
Attention: Mr. Steven Lund
U.S. Army Corps of Engineers
Asheville Regulatory Field Office
151 Patton Avenue, Room 143
Asheville, NC 28801-5006
Dear . und:
On July 23, 1996, a preliminary walk-through of the Long Creek Channel Stabilization Project
was conducted. In addition to ourselves, Joe Aug of Mecklenburg County Engineering, and Mike
Brennan, Ron Geiger and Bill Cutlip of Woolpert participated in the field walk. Based on
comments made during the field review, we determined that the most logical approach to the
design of stabilization measures on Long Creek was to prepare some very preliminary plans for
you to review and comment on prior to rushing headlong into a more final design.
Woolpert conducted a second field walk of Long Creek on August 29, 1996. The purpose of the
second field walk was to identify areas in which full bank protection was required due to severe
erosion which has already occurred or where the potential likelihood exists for severe erosion in
the future. Additionally, we field located trees in the construction impact zone, i.e., trees that fell
within the proposed top of banks (assuming that the proposed tops of banks at 2:1 side slopes) or
large diameter, shade producing trees that fell within the construction easement (typically 20 feet
from proposed top of banks). We also noted that numerous trees exist within the construction
easement throughout the project limits. Because of this, we intend to prohibit the cutting of any
tree greater than 3" in diameter within the construction easement. Note that the County's
construction of stabilization measures on Long Creek is scheduled to coincide with Charlotte
Mecklenburg Utility Department's construction of a new 36" sewer line (parallel to an existing 15"
sewer line) which parallels the south side of Long Creek along the entire length of the proposed
channel stabilization. The combined planning effort of these agencies will limit the impact of
construction vehicles and allow for easy access to the creek, along the sewer easement and along
sewer construction access points.
Long Creek varies in depth from 8 feet to 10 feet. Based on a review of the USGS J635 model
8731 Red Oak Boulevard
Suite 101
Charlotte, North Carolina 28217-3958
............
? ? ? 704.525.6284
1 Fax: [phone]
1?. ,. .
Attention: Mr. Steven Lund
September 10, 1996
Page 2
results (from a 1989 revision to the FIRM map), the average channel velocities range from 2.0 to
7.0 feet per second in the 10-year storm. A Mecklenburg County Stormwater Management Study
for Long Creek in 1989 estimated flow increases in the 10-year storm of 40% over existing flows
at Rozelles Ferry Road by the year 2005.
Our preliminary design calls for a combination riprap/vegetative matting lining throughout most of
the project with full bank protection in selected areas. The preliminary design also calls for some
areas in which nothing will be done due to the stability of the existing channel banks. The
combination lining accounts for approximately 70% of the work, with full bank riprap along
approximately 20% of the reach. The remaining 10% is "do nothing." Please refer to the enclosed
plan sheets which start at the upstream end of the project (Rozelles Ferry or Bellhaven Road) and
proceed downstream to the project terminus at a distance of approximately 6,850 river feet from
the start point. Please also refer to the enclosed figures which show various lining types including
the combination riprap/vegetative matting typical (Figure 1), the combination lining with toe
realignment typical (Figure 2), the combination lining with tree protection at the toe typical (Figure
3) and the full bank riprap typical (Figure 4). Figure 5 shows a typical detail for the diversion
structures we have proposed in some bends. The vegetative matting will most likely be N^rth
American Green C350, a permanent matting with a coconut fiber filler. Seeding and mulching will
occur before the matting is laid. In an a ort to save trees, some toe realignment will be required, as
shown on the plans. In some areas, we have shown a modified, steeper slope around the tree to be
saved.
Your comments and suggestions on this project with respect to permitting will be greatly
appreciated. If you need any further information, please feel free to call us at [phone] at
your earliest convenience.
i cerely,
W OLPER
Mike Iagnocco
Sr. Environmental Scientist
Enclosures
cc: ,Karen Lynch, NCDEHNR, DWQ
David Morton, Mecklenburg County Engineering, Project Manager
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