20010940 Ver 1_Complete File_20010620

W A T Michael F. Easley, Governor
O?
?R
Ot pG William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
\
r Alan W. Klimek, P.E. Director
Division of Water Quality

DWQ Project No.: O1 - 09100 County:
Applicant: NC.AOT'
Project Name: S9 1549 Lae.' A//1-tat/
Date of Issuance of 401 Water Quality Certification:
,dG SIOAI
Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer
Rules, and any subsequent modifications, the applicant is required to return this certificate to the
401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC,
27699-1650. This form may be returned to DWQ by the applicant, the applicant's authorized agent, or
the project engineer. It is not necessary to send certificates from all of these.
Applicant's Certification
I, r/??iC hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the construction such that the construction was observed to
be built within substantial compliance d intent of the 401 Water Quality Certification and Buffer
Rules, the ap rove pl s a s g I ns, and other supporting materials.
- g. Date:_Z/Z(, O
Signature:
Agent's Certification
1, , hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the construction such that the construction was observed to
be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer
Rules, the approved plans and specifications, and other supporting materials.
Signature: Date:
If this project was designed by a Certified Professional
1, , as a duly registered Professional (i.e.,
Engineer, Landscape Architect, Surveyor, etc.) in the State of North Carolina, having been authorized
to observe (periodically, weekly, full time) the construction of the project, for the Permitee hereby state
that, to the best of my abilities, due care and diligence was used in the observation of the construction
such that the construction was observed to be built within substantial compliance and intent of the 401
Water Quality Certification and Buffer Rules, the approved plans and specifications, and other
supporting materials.
Signature Registration No. Date:
AAV
tJ
7N51;
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
919.733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetiands/
OF W ATF9 Michael F. Easley
?O? pG Governor
Uj William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
p `C Kerr T. Stevens
Division of Water Quality
July 3, 2001
DWQ# 01-0940
Jackson County
Mr. C.R. Styles
District Engineer
NC Department of Transportation
P.O. Box 250
Bryson City, NC 28713
APPROVAL of 401 Water Quality Certification with Additional Conditions
Dear Mr. Styles:
You have our approval, in accordance with the attached conditions, to place fill in 0.04 acres of wetlands tributary to
Cullowhee Creek in order to inprove SR 1329, Lyle Wilson Road in Jackson County, as described in your application
received by the Division of Water Quality on June 20, 2001 (dated June 7, 2001). After reviewing your application, we have
determined that this fill is covered by General Water Quality Certification Number 3289, which can be viewed on our web
site at http://h2o.enr.state.nc.us/ncwetlands. This Certification allows you to use Nationwide Permit Number 14 when it is
issued by the U.S. Army Corps of Engineers. 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, Non-Discharge and Water Supply
Watershed regulations. Also this approval will expire when the accompanying 404 permit expires unless otherwise
specified in the General Certification.
This approval is only validf;6r the purpose and design that you described in your application. If you change your
project, you must notify us in writing and you may be required to send us a new application for a new certification. If the
property is sold, the new owner must be given a copy of the Certification and approval letter and is thereby responsible for
complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory
mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the
conditions listed in the attached certification as well as the additional conditions listed below:
1. High Quality Waters BMPs must be used for sediment and erosion control for this project.
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 Mike Parker in DWO's Asheville Regional Office at 828-251-6208 or Cynthia Van Der
Wiele in Raleigh 919-733-1786.
Attachments
Sincerely,
r . Stevens
cc: Corps of Engineers Asheville Regulatory Field Office
Asheville DWQ Regional Office
Central Files
File Copy
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
40A ISSUeu
A f
•? Gw..od.
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY LYNDO TIPPETT
GOVERNOR SECRETARY
June 7, 2001
Jackson County 010940
SR 1329
Mr. Steve Lund, NCDOT Coordinator
U. S. Army Corps of Engineers
Regulatory Branch
151 Patton Avenue, Room 208
Asheville, NC 28801-5006
Dear Mr. Lund:
The North Carolina Department of Transportation is proposing to grade, drain, base and
pave primarily along the existing roadway of SR 1329, Lyle Wilson Road in Jackson County. In
order to construct this project in accordance with our current secondary road standards, and
due to the fill of approximately 0.04 acres of isolated wetlands, we are requesting authorization
under Section 404 of the Clean Water Act.
I am sending a straight-line diagram with our proposed erosion control and construction
limits at various sites along this project. In addition, a typical section of the road, drawings for
the fill in isolated wetlands, general notes and standards on erosion control measures, and a
marked County Map are enclosed.
The best management practices will be used to minimize and control sedimentation and
erosion on this project. The construction foreman will review all erosion control measures daily
to ensure sedimentation and erosion controls are being effectively controlled. If the planned
devices are not functioning as intended, they will immediately be replaced with better devices.
The silt fences and other erosion control devices will be in place prior to pipe installation and will
remain in place until the project is stabilized.
PAYMENT
RECEIVED
P.O. Box 250, Bryson City, NC 28713 Phone [phone]
Mr. Steve Lund
Page 2
June 7, 2001
By copy of this letter I am asking Mr. Owen Anderson, Habitat Coordinator Western
Mountain District, of the NCWRC to comment directly to you concerning the 404 Nationwide
permit request.
Also by copy of this letter, I am requesting authorization to proceed under Section 401 of
the Clear Water Act from Division of Water Quality. In addition, I am asking Mr. Anderson and
Mr. Ed Ingle, Area Roadside Environmental Engineer (NCDOT), to comment directly to me
concerning this permit request.
We would like to begin construction as soon as possible. If further information is
required, please advise. Your early review and co sideration will be appreciated.
Yours tru ,
C?Z PC-
C. R. yles, . E.
District eer
CRS:sd
atta.
cc: Mr. R. G. Watson, P. E., Division Engineer
Mr. Mark Davis, Division Environmental Officer
Mr. E. L. Ingle, Area Roadside Environmental Engineer
Mr. Owen Anderson, Habitat Coordinator W. Mtn. Dist., NCWRC
Mr. John Dorney, Water Quality Certification Unit, DWQ
P.O. Box 250, Bryson City, NC 28713 Phone [phone]
Office Use Only: O 1 0 9 4U n Form Version April 2001
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Cheek all of the approval(s) requested for this project:
VSection 404 Permit
? ction 10 Permit
W401 Water Quality Certification
? Riparian or Watershed Buffer Rules
2, Nationwide, Regional or General Permit Number(s) Requested:
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
II. Applicant Information
Owner/Applicant Information
E
Name: NCDOT DISTRICT ENGINEER: C R Styles -P
Mailing Address: P 0 Drawer 250, Boon City. NC 28713
Telephone Number: [phone]
E-mail Address:
2. Agent Information (A signed and dated copy of the Agent Authorization letter must be
attached if the Agent has signatory authority for the owner/applicant.)
Name:
Company Affiliatio
Mailing Address:_
Telephone Number: N/A Fax Number: N/A
E-mail Address: N/A
Fax Number: [phone]
Page 3 of 12
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to to
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing prope
boundaries and development plans in relation to surrounding properties. Both the vicinity n
and site plan must include a scale and north arrow. The specific footprints of all buildin
impervious surfaces, or other facilities must be included. If possible, the maps and plans sho
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the prope
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discreti
so long as the property is clearly defined. For administrative and distribution purposes,
USACE requires information to be submitted on sheets no larger than 11 by 17-inch fora
however, DWQ may accept paperwork of any size. DWQ prefers frill-size construct
drawings rather than a sequential sheet version of the frill-size plans. If frill-size plans
reduced to a small scale such that the final version is illegible, the applicant will be informed t
the project has been placed on hold until decipherable maps are provided.
1. Name of project: ?R I.d 2- +??? ?J?,?ctf1 K??
2. T.I.P. Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN)
N/A
4. Location j
Q LJ h Q P.
County: ?CLc'.- ??- n Nearest Town: C (k)
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers, landmarks, etc.): 5 Q- /Z 2. L-ij le, IAL f
5. Site coordinates, if available (UTM or Lat/Long): N/A
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
State maintained secondary road used to access rural woodland and/or residential arooert?
7. Property size (acres): 0-16
8. Nearest body of water (stream/river/sound/ocean/lake):??(?
9. River Basin: . bctS
(Note - this must be one of North Carolina's seventeen designated major river basins.
River Basin map is available at http•//h2o enr state nc us/adminimaps/.)
Page 4 of 12
10. Describe the purpose of the proposed work: To widen and pave SR13Z-°I to meet current
11. List the type of equipment to be used to construct the project: Track Hoes Bulldozers,
u tnigks, Back Hoes. Manual Labor. etc.
12. Describe the land use in the vicinity of this project: Rural woodland Residential
IV. Prior Project History
if jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
constriction schedules.
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: No additional permit requests are anticipated
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 5 of 12
1. Wetland Impacts
Wetland Impact
Site Number
(indicate on map)
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
(yes/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland**
F- I 1 .4 4-75 ='z a
-hA .t r

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate I
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-961
online at http://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver I
Carolina Bay, bog, etc.)
List the total acreage (estimated) of existing wetlands on the property: 0,07 A r re
Total area of wetland impact proposed: 0, y z/ Ar'-re
2. Stream Impacts, including all intermittent and perennial streams
Stream Impact
Site Number
(indicate on map)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please specify

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: cuiverts and associated ril
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/;
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocat
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nl
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or onli
www.uses.eov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topo/one
www mapquest.com, etc.). /
Cumulative impacts (linear distance in feet) to all streams on site: / y y A/
Page 6 of 12
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
(indicate on map)
Type of Impact* Area of
Impact
(acres) Name Waterbody
(if applicable) e) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

A I

LJ Li
LIS[ eacn Impac[ JCtJaral1:1Y anu WC11MY kill.. .Y uuF."'. ....r.....
Flooding, drainage, bulkheads, etc.
4. Pond Creation
If construction of a pond is proposed, 'associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): F? uplands E] stream E] wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): N/A
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): N/A
Size of watershed draining to pond: N/A Expected pond surface area: N/A
N'II. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed durins construction to reduce impacts.
Impacts cannot be avoided. ?t'4 Ic?r. m,k<,4 L k', llc-d in order to gain the necessary width
to construct SR 132.9 to current NCDOT 'standards. .
Page 7 of 12
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size. of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http•//h2o enr state nc trs/ncwctlands/stnnaide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
N/A
Page 8 of 12
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at http://b2o.eLir.stzite.nc.us/NVEP/index.ht m. If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): N/A
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
Amount of Non-riparian wetland mitigation requested (acres): N/A
Amount of Coastal wetland mitigation requested (acres): N/A
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
land?
Yes Vol/ No El
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (MEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] o review current thresholds for environmental documentation.
Yes [] No V
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes F-] No F-] N/A
X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer RequV ents), or other (please identify V
Yes E] No If you answered "yes", provide the following information:
Page 9 of 12
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 N/A 3 N/A
2 N/A 1.5 N/A
Total N/A N/A
Zone t extends out 30 feet perpendicular from near bank of channel; Gone Z extends an
additional 20 feet from the edge of Zone 1.
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (DWQ Only)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious acreage = 0- -3 `l Proposed impervious acreage = U . s 9
Total acreage = 0. 9 6 Storm water will be routed to buffer areas or retention basins
where physically possible
XII. Sewage Disposal (DWQ Only)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
XI11. Violations (DWQ Only)
Is this site in violation of DWQ Wetland Rules.(15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No [V
Is this an after-the-fact permit plication?
Yes ? No
Page 10 of 12
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
Cz
Date
Applicant/Agent's Signature i tter from t
l he applicant is provided.)
(Agent's signature is valid only if o
an autho at e
US Army Corp s Of Engineers Field Office s and County Coverage
Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell
lk
P
US Army Corps of Engineers Avery
Buncombe Clay
Cleveland Jackson
Lincoln o
Rowan
151 Patton Avenue Burke Gaston Macon Rutherford
Room 208
NC 28801-5006
Asheville Cabarrus Graham Madison Stanley
i
S
,
Telephone: [phone] Caldwell
Catawba Haywood
Henderson McDowell
Mecklenburg wa
n
Transylvania
Fax: [phone]
Raleigh Regulatory Field Office Alamance Durham Johnston
Rockingham
Stokes
US Army Corps Of Engineers Alleghany Edgecombe
klin
F Lee
Nash
Surry
6508 Falls of the Neuse Road Ashe
Caswell ran
Forsyth Northampton Vance
Suite 120
NC 27615
Raleigh Chatham Granville Orange Wake
Warren
,
Telephone: [phone] Davidson Guilford
lifax
H Person
Randolph Wilkes
Fax: [phone] Davie a
Washington Regulatory Field Office Beaufort 'Currituck Jones
US Army Corps Of Engineers Bertie
Camden Dare
Gates Lenoir
Martin
Post Office Box 1000
NC 27889-1000
Washington Carteret* Green Pamlico
,
Telephone: [phone] Chowan Hertford Pasquotank
Fax:[phone] Craven Hyde Perquimans
Wilmington Regulatory Field Office Anson Duplin Onslow
US Army Corps Of Engineers Bladen Harnett
k
H Pender
Richmond
Post Office Box 1890
NC 28402-1890
Wilmington Brunswick
Carteret e
o
Montgomery Robeson
,
Telephone: [phone] Columbus Moore Sampson
tland
S
Fax: [phone] Cumberland New Hanover co
Pitt
Tyrrell
Washington
Wayne
Union
Watauga
Yancey.
Wilson
Yadkin
*Croatan National Forest Only
Page 11 of 12
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ADD ITION
IMPROVEMENT
TO BE PAVED
P• POLES TO BE MOVED
T. POLES TO BE MOVED
R /W WIDTH
SCALE

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-c? --- --^-
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'Brush Bari;; t• ; -
SUt Check Dam Type A...:
Silt Check Dam 1We.B ..... • . • • • e • •
?......... .
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Rock Silt: Check Dam ........ •
O?al Lh Berm .. , , ...: ...............
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RAIN
TEMP SLOPE D
TEMP SILT DITCH -TSI)-
EARTH EMBANKMENT
SILT FENCE ill
FIBERGLASS ROVING •;--- EGR
RI P RAP
TEMPORARY SILT FENCE:
prevent off-
A temporary silt fence is commonly used at the
ftoe of a abric buried aathetbo tom,
site sedimentation. It is made of permeable filter
stretched and supported by steel posts. The silt fence reduces the water flow-while
retaining the sediment. They may also be used
s nifi ant rainfall to pensureethere
outlets. Silt fences need to be checked after each
effectiveness. They must be maintained on a regular basis. Silt fences shall not be
installed across streams, ditches, or waterways.
AREAS OF USE:
A d ontained
At toe of fill sections where sediment runoff can be store an c
inside the project limits.
DESIGN CRITERIA:
Matenal
Fabric
Steel posts length
Post spacing
With Wire
Type 3 Class A
5 ft
10 ft.
Without Wire
Type 3 Class B
5 ft.
6 ft. maximum
17 March, 1992
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18 March,1992
SILT BASIN TYPE-B:
777
A silt basin type-B is a temporary basin built to collect sediment flowing through a
drainage way. The silt basin is built at the base of the ditch with its length being at
least 2 times the width of the basin. The type-B silt basin is generally built in
conjunction with temporary rock silt checks and other devices that control or slow
down water flow. This device must be monitored closely and cleaned out on a
regular basis until grass is established along the ditch line and sedimentation is no
longer a problem.
AREAS OF USE:
• In conjunction with temporary rock silt checks and other devices used in
drainage ditches.
DESIGN CRITERIA:
• Width - variable
• Length - 2 times width
• Depth - 2 ft. minimum storage - 1800 cubic feet/acre (equals L x W x D)
23 March, 1992

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March,1992
ROCK PIPE INLET PROTECTION TYPE-A:
°
°
A rock pipe inlet protection type-A is a horseshoe shaped structure with a of the structure. The type lAin
sediment storage area around the outside perimeter
rock pipe inlet protection shall be used at pipe inlets no larger than 36 inches in
diameter where it is receiving flow from several directions. The type-A rock pipe
inlet protection utilizes class-B stone lined with #5 or #57 stone to protect drainage
pipe structures by trapping sediment before it enters. They have a sediment storage
pit which is designed by the same procedures as a silt basin.
AREAS OF USE:
• At inlets to pipes no larger than 36 inches in diameter where it receives flow
from several directions.
• In areas where it can be cleaned and maintained on a regular basis.
DESIGN CRITERIA:
• Structural stone - class-B stone
• Sediment control stone - #5 or #57 stone
• Sediment storage area - 1800 cubic ft./acre
• Dam height - 3 ft. minimum
33 March, 1992

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March,1992
ROCK SILT SCREEN:
EMU
A
A rock silt screen is a low-level dam structure to be used in streams below culvert
sites. Rock silt screens shall be used to trap sediment transported by running water
and shall be placed in the stream below the construction site within the right-of-
way or easement boundary. The rock silt screen utilizes class B stone lined with #5
or #57 stone to produce a ripple-effect in the stream to settle the larger sediment
particles transported in the stream from the construction site. The trapped sediment
shall be cleaned out before the device is removed from the stream.
AREAS OF USE:
In live streams below construction sites where construction occurs in or
adjacent to the stream.
In live streams below a culvert construction site.
Where it can be cleaned before it is removed from stream.
DESIGN CRITERIA:
Structural stone - class B stone
Sediment control stone - n 5 or T# 57 stone
Dam height - 1.5 ft. minimum and 3 ft. maximum (shall not be higher than
1 fr. above normal flow of stream)
37 March, 1992

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