19990093 Ver 1_Complete File_19990202

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
1 ? •
Am%
NC ENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
March 1, 1999
Swain County
WQC 401 Project # 990093
APPROVAL of 401 Water Quality Certification
Mr. C.R. Styles
NC DOT
PO Box 250
Bryson City, NC 28801-2714
Dear Mr. Styles:
You have our approval, in accordance with the attached conditions for the purpose of paving SR 1110, as you
described in your application dated February 2, 1999. After reviewing your application, we have decided that this fill is
covered by General Water Quality Certification Number 3108. This Certification allows you to use Nationwide Permit
Number 26 when the Corps of Engineers issues it. In addition, you should get any other federal, state or local permits
before you go ahead with your project including (but not limited to) Sediment and Erosion Control, Coastal Stormwater,
Non-Discharge and Water Supply Watershed regulations. `Also this approval will expire when the accompanying 404 or
CAMA permit expires unless otherwise specified in the General Certification.
This approval is only valid for the purpose and design that you described in your application. If you change your
project, you must notify us and send us a new application. If the property is sold, the new owner must be given a copy of
this Certification and approval letter and is thereby responsible for complying with all conditions. If total wetland fills for
this project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC
2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached 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.
Attachment
cc: Wilmington District Corps of Engineers
Corps of Engineers Asheville Field Office
Asheville DWQ Regional Office
Mr. John Dorney
Central Files 990093.1tr
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
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PAYMENT
RECEIVED
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
JAMES B. HUNT JR. E. NORRIS TOLSON
GOVERNOR SECRETARY
January 20, 1999
Swain County
SR 1110 - REVISED 2 . c(
Mr. Bob Johnson
215 Army Corps of Engineer C G
Reg. Field Office
Room 75, Grove Park Ave.
Asheville, NC 28801-2714
Dear Mr. Johnson:
The North Carolina Department of Transportation is proposing to grade, drain, base
and pave primarily along the existing roadway of SR 1110, Wiggins Creek Road in Swain
County. In order to construct this project in accordance with our current secondary road
standards and due to the replacement of one (1) pipe culvert in Wiggins Creek (DEM Class C)
and the addition of one (1) pipe culvert in an unnamed tributary of Wiggins Creek, we are
requesting authorization under Section 404 of the Clean Water Act. This request is for a
revision to permit number 199830944, issued on August 6, 1998. This revision pertains to site
numbers two and three. The open channel relocation originally proposed at site number 3 has
been changed to a pipe culvert. X42
1 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 pipe replacement in Wiggins Creek and the pipe addition in the unnamed
tributary of Wiggins Creek, general notes and standards on erosion control measures, and a
marked County Map are enclosed. We propose to install the new culverts slightly below the
existing stream bed elevation where bedrock is not encountered to minimize impact to Wildlife
habitat and allow the existing stream gradients to remain as unchanged as physically possible.
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 construction and
will remain in place until the project is stabilized.
P.O. Box 250, Bryson City, NC 28713 Phone [phone]
Mr. Bob Johnson
Page 2
January 20, 1999
By copy of this letter I am asking Mr. Mark Davis, 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 Environmental Management. In addition, I am asking
Mr. Davis and Mr. Ed Ingle, Area Roadside Environmental Engineer (NCDOT), and Mr. Richard
Phillips (DEHNR), 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 consideration will be appreciated.
Yours tru
C. R. tyles, P. E.
District ngineer
CRS:sd
atta.
cc: Mr. Richard Phillips, P. E., Regional Engineer DEHNR
Mr. F. D. Martin, P. E., Division Engineer
Mr. E. L. Ingle, Area Roadside Environmental Engineer
Mr. Eric Galamb, Water Quality Certification Unit, DEM
Mr. Mark Davis, Habitat Coordinator W. Mtn. Dist., NCWRC
P.O. Box 250, Bryson City, NC 28713 Phone [phone]
DEM ID: CORPS ACTION ID:
i
NATIONWIDE PERMIT REQUESTED (PROVIDE NATIONWIDE PERMIT)
PRE--CONSTRUCTION NOTIFICATION APPLICATION
FOR NATIONWIDE PERMITS THAT REQUIRE:
1) NOTIFICATION TO THE CORPS OF ENGINEERS
2) APPLICATION FOR SECTION 401 CERTIFICATION
3) COORDINATION WITH THE NC DIVISION OF COASTAL MANAGEMENT
SEND THE ORIGINAL AND (1) COPY OF THIS COMPLETED FORM TO THE APPROPRIATE
FIELD OFFICE OF THE CORPS OF ENGINEERS (SEE AGENCY ADDRESSES SHEET). SEVEN
(7) COPIES SHOULD BE SENT TO THE N.C. DIVISION OF ENVIRONMENTAL MANAGEMENT
(SEE AGENCY ADDRESSES SHEET). PLEASE PRINT.
1. OWNERS NAME: NCDOT - DISTRICT ENGINEER: C. R. STYLES, P.E.
2. MAILING ADDRESS: P.O. DRAWER 250
CITY: BRYSON CITY
SUBDIVISION NAME
STATE: NC
N/A
ZIP CODE:
28713
PROJECT LOCATION ADDRESS, INCLUDING SUBDIVISION NAME (IF DIFFERENT FROM
MAILING ADDRESS ABOVE): !
3. TELEPHONE NUMBER (HOME):
(WORK) : [phone]
4. IF APPLICABLE: AGENT'S NAME OR RESPONSIBLE CORPORATE OFFICIAL, ADDRESS,
PHONE NUMBER: SAME AS ABOVE #1
5. LOCATION OF WORK (PROVIDE A MAP, PREFERABLY A COPY OF USGS TOPOGRAPHIC
MAP OR AERIAL PHOTOGRAPHY WITH SCALE) :
COUNTY: 5' )/_A. Of-, NEAREST TOWN OR CITY: i_' n lfl-itl
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SPECIFIC LOCATION (INCLUDE ROAD
`NUMBERS, LANDMARKS, ETC. ) Cf-i .t JQJtA4 Q 1' (if
/\/t?P- mi-t-t?, J-1 `-tJck- ,?\ t .<?J Yl f le
, 6. IMPACTED OR NEAREST STREAM/RIVER: l,r 2 t! ,k' (brlrl CL!USS C: Cu"A 0-n Utl.r' 'rvl.1
Tr,6tcfik-r.,ct:J JJir_.Crzrk-.
RIVER BASIN: L ' f(- _-/fnn1SS P '2- c- r A 's "k
7a. IS PROJECT LOCATED NEAR WATER CLASSIFIED AS TROUT, TIDAL SALTWATER
(SA), HIGH QUALITY WATERS (HQW), OUTSTANDING RESOURCE WATERS (ORW), WATER
SUPPLY (WS-I OR WS-II)? YES [ ) NO [X] IF YES, EXPLAIN:
7b. IS THE PROJECT LOCATED WITHIN A NORTH CAROLINA DIVISION OF COASTAL
MANAGEMENT AREA OF ENVIRONMENTAL CONCERN (AEC)? YES [ ] NO [X)
7c. IF THE PROJECT IS LOCATED WITHIN A COASTAL COUNTY (SEE PAGE 7 FOR
LIST OF COASTAL COUNTIES), WHAT IS THE LAND USE PLAN (LUP! DESIGNATION?
N/A
8a. HAVE ANY SECTION 404 PERMITS BEEN PREVIOUSLY REQUESTED FOR USE ON
THIS PROPERTY? YES NJ NO [ ) IF YES, PROVIDE ACTION I.D. NUMBER OF
PREVIOUS PERMIT AND ANY ADDITIONAL INFORMATION (INCLUDE PHOTOCOPY OF 401
CERTIFICATION) : re ." 'k [4 q'ql ; • 0c `? ?,-
a V ' S. t, (fin N h fJM Pfr, 2 a:V,4 33, CKf J 04 Icli ci! , ',tv'T1Gt'1 i<, •2Y111(.???
??.
`-h,'s ? ; can vp? Y S tc 1 ?•?••
8b. ARE ADDITIONAL PERMIT REQUESTS EXPECTED FOR THIS PROPERTY IN THE
FUTURE? YES [ ] NO Y`] IF YES, DESCRIBE ANTICIPATED WORK:
9a. ESTIMATED TOTAL NUMBER OF ACRES IN TRACT OF LAND: .., t" '8 ;,-y -
9b. ESTIMATED TOTAL NUMBER OF ACRES OF WETLANDS LOCATED ON PROJECT SITE:
2

10a. NUMBER OF ACRES OF WETLANDS IMPACTED BY THE PROPOSED PROJECT BY:
FILLING: 0, o t'1
o
(7 EXCAVATION:
FLOODING:
DRAINAGE:
OTHER:
TOTAL ACRES TO BE IMPACTED: 0. 00p-
10b. (1) STREAM CHANNEL TO BE IMPACTED BY THE PROPOSED PROJECT (IF
RELOCATED, PROVIDE DISTANCE BOTH BEFORE AND AFTER RELOCATION):
LENGTH BEFORE: FT AFTER: FT
WIDTH BEFORE (based on normal high water contours): FT
WIDTH AFTER:
- FT
AVERAGE DEPTH BEFORE: FT AFTER: FT
(2) STREAM CHANNEL IMPACTS WILL RESULT FROM: (CHECK ALL THAT APPLY)
OPEN CHANNEL RELOCATION: PLACEMENT OF PIPE IN CHANNEL: M? L f
CHANNEL EXCAVATION: CONSTRUCTION OF A DAM/FLOODING:
OTHER:
11. IF CONSTRUCTION OF A POND IS PROPOSED, WHAT IS THE SIZE OF THE
WATERSHED DRAINING TO THE POND? N/A
WHAT IS THE EXPECTED POND SURFACE AREA? N/A
12. DESCRIPTION OF PROPOSED WORK INCLUDING DISCUSSION OF TYPE OF
MECHANICAL EQUIPMENT TO BE USED (ATTACH PLANS: 8 1/2" X 11" DRAWINGS
ONLY) : TO WIDEN AND PAVE SR ill() TO MEET CURRENT NCDOT STANDARDS BY USE OF
TRACK HOES, BULLDOZERS, DUMP TRUCKS, BACK HOES, MANUAL LABOR, ETC.
13. PURPOSE OF PROPOSED WORK: SAME AS ABOVE IN # 12
3
14. STATE REASONS WI-I'i 1T IS BELIEVED THAT THIS ACTIVITY MUST BE'CARRIED
OUT IN WETLANDS. (INCLUDE ANY MEASURES TAKEN TO MINIMIZE WETLAND
IMPACTS) : TO GAIN THE NFcnFD WTDTH TD RIITLn SR WO TO NCDOT STANDARDS. ALL
CHANNEL CHANGES WILL BE CONSTRUCTED IN THE DRY. RIP-RAP WILL ONLY BE USED FOR
BANK STABILIZATION. ALDERS, RED MAPLES, BLACK WALNUTS, WILLOWS, SYCAMORES, DOGWOODS,
ETC. WILL BE RE-ESTABLISHED ON THE BANKS. ALL PIPE REPLACEMENTS WILL BE PLACED
SLIGHTLY BELOW THE EXISTING STREAMED GRADIENT SO NATURAL SUBSTRATE CAN BE RE-ESTABLISHED.
15. YOU ARE REQUIRED TO CONTACT THE U.S. FISH AND WILDLIFE SERVICE
(USFWS) AND/OR NATIONAL MARINE FISHERIES SERVICE (NMFS) (SEE AGENCY
ADDRESSES SHEET) REGARDING THE PRESENCE OF ANY FEDERALLY LISTED OR
PROPOSED FOR LISTING ENDANGERED OR THREATENED SPECIES OR CRITICAL HABITAT
IN THE PERMIT AREA THAT MAY BE AFFECTED BY THE PROPOSED PROJECT. DATE
CONTACTED: HANDLED BY CORPS (ATTACH RESPONSES
FROM THESE AGENCIES.)
16. YOU ARE REQUIRED TO CONTACT THE STATE HISTORIC PRESERVATION OFFICER
(SHPO) (SEE AGENCY ADDRESSES SHEET) REGARDING THE PRESENCE OF HISTORIC
PROPERTIES IN THE PERMIT AREA WHICH MAY BE AFFECTED BY THE PROPOSED
PROJECT. DATE CONTACTED: HANDLED BY CORPS
17. DOES THE PROJECT INVOLVE AN EXPENDITURE OF PUBLIC FUNDS OR THE USE OF
PUBLIC (STATE) LAND?
YES A, NO [) (IF NO, GO TO 18)
a. IF YES, DOES THE PROJECT REQUIRE PREPARATION OF AN ENVIRONMENTAL
DOCUMENT PURSUANT TO THE REQUIREMENTS OF THE NORTH CAROLINA ENVIRONMENTAL
POLICY ACT?
YES [ ] NO j
b. IF YES, HASTHE DOCUMENT BEEN REVIEWED THROUGH THE NORTH CAROLINA
DEPARTMENT OF ADMINISTRATION STATE CLEARINGHOUSE?
YES [] NO [] N/A
IF ANSWER TO 17b IS YES, THEN SUBMIT APPROPRIATE DOCUMENTATION FROM THE
STATE CLEARINGHOUSE TO DIVISION OF ENVIRONMENTAL MANAGEMENT REGARDING
COMPLIANCE WITH THE NORTH CAROLINA ENVIRONMENTAL POLICY ACT.
QUESTIONS REGARDING THE STATE CLEARINGHOUSE REVIEW PROCESS SHOULD BE
DIRECTED TO MS. CHRYS BAGGETT, DIRECTOR STATE CLEARINGHOUSE, NORTH
CAROLINA DEPARTMENT OF ADMINISTRATION, 116 WEST JONES STREET, RALEIGH,
NORTH CAROLINA 27603-8003, TELEPHONE [phone].
4
3 . THE FOLLOWING ITEMS S''CGTD BC INCLUDED WITH THIS -cr - Ttl
?
ROPOSED !.--7VI'.^Y INVOLVES :T_SCH?.RC OF E:iC3V.._-
`aET:.CS
a . `:•=- L '-.ND DELINEA %!-z P SHCWTNG ALL WE-T. 11 _
??JD PONDS CNTHE PROPERTY _ -R. `IAI'ICNWIDE PERMIT NUMEE?.3 -?
29, AND 38). ALL STREAMS ;.NTERMITTENT AND PERM-ANENT) ON '.•..- PRCPERTYJMUST BE SHCWN ON THE MAP. '•L-.P SCALES SHOULD BE 1 INCH EAU: L? 3 FEE-T. OR 1
INCH EQUALS 100 FEET OR THEIR EQUIVALENT.
b. I? AVAILABLE, REPRESENTATIVE PHOTOGRAPH OF WETL.?NDS TO SE
IMPACTED BY PROJECT.
C. I: DELINEATION WAS DERFORMED BY A CONSULTANT, INC7UDE ?_LL DATA
SHEETS RELEVANT TO THE PLAC-T.MENT OF THE DELINEATION LINE.
d. ATTACH A COPY OF THE STORMWATER MANAGEMENT PLAN IF REQUIRED.
e. WHAT IS LAND USE OF SURROUNDING PROPERTY? RURAL WOODLAND,
RESIDENTI
f. IF APPLICABLE, WHAT IS PROPOSED METHOD OF SEWAGE DISPOSAL? N/A
g. SIGNED AND DATED AGENT AUTHORIZATION LETTER, IF APPLICABLE..
NOTE: WETLANDS OR WATERS OF THE U.S. MAY NOT BE IMPACTED PRIOR TO:
1) ISSUANCE OF A SECTION 404 CORPS OF ENGINEERS PERMIT,
2) EITHER THE ISSUANCE OR WAIVER OF A 401 DIVISION OF
ENVIRONMENTAL MANAGEMENT (WATER QUALITY) CERTIFICATION, AND
3) (IN THE TWENTY COASTAL COUNTIES ONLY), A LETTER FROM THE
NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT STATING THE PROPOSED
ACTIVITY IS CONSISTENT WITH THE NORTH CAROLINA COASTAL MANAGEMENT
PROGRAM. A
OWNER' S /?_uE;IZT' ?\ S IGNATURE
( n.GEII'?" S SIGN" TURE VALT- CNLY
IF AUTHORI7:`_TION LETTER -ROM
THE OWNER IS PROVIDED (19g.))

5

-Mate of North Carolina'
Department of Environment
and Natural Resourc 1 • •
Division of Water (Qua'tjy'.
'AW
t
.? QT J4
James B. Hunt, Jr., Governor (A
NCDENR
Wayne McDevitt, Secretary(?? `\;\, "\, • . ,,,
A. Preston Howard, Jr., P.E., Direct?S(?r:? ; NORTH CAROLINA DEPARTMENT OF
?? ENVIRONMENT AND NATURAL RESOURCES
July 27, 1998
Swain County
DWQ Project 980661
APPROVAL of 401 Water Quality Certification and ADDITIONAL CONDITIONS
Mr. C.R. Styles
PO Box 250
Bryson City, NC 28713
Dear Mr. Styles:
You have our approval, in accordance with the attach tuons and those listed below, to impact 0.02
acres of wetlands or waters for the purpose of paving S 111 i wain County, as you described in your
application dated July 20, 1998. After reviewing your application, we have decided that this impact is covered
by General Water Quality Certification Number 3108. This certification allows you to use Nationwide Permit
Number 26 when it is issued by the 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, Coastal Stormwater, Non-Discharge and Water Supply Watershed regulations. This approval will
expire when the accompanying 404 or CAMA permit expires unless otherwise specified in the General
Certification.
This approval is only valid for the purpose and design that you described in your application except as
modified below. If you change your project, you must notify us and you may be required to send us a new
application for a new certification. If the property is sold, the new owner must be given a copy of this
Certification and approval letter and is thereby responsible for complying with all conditions. If total wetland
fills for this project (now or in the future) exceed one acre, compensatory mitigation may be required as
described in 15A NCAC 2H .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.
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 conforming to Chapter 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, P.O. Box 27447, Raleigh, N.C. 276 1 1-7447. 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 Domey at 919-733-1786.
Roon
77 war Jr. PA U_
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Attachment
cc: Wilmington District Corps of Engineers
Corps of Engineers Asheville Field Office
Asheville DWQ Regional Office
Mr. John Domey
Central Files
980661.1tr
Division of Water Quality • Non-Discharge Branch
4401 Reedv Creek Rd.. Raleigh. NC 27607 Telephone [phone] FAX [phone]
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3

EROSION CONTROL
DETAILS AND
SPECIFICATIONS
245.03 Temporary Silt Ditch _________________________ ?o
245.05 Temporary Diversion ,-,---_:-- -,•-.. To
893.01 Temporary Silt Fence
890.05 Temporary'.Slope Drain with Earth Berm ?--=
....... ?.
245.01 Slit Basin Type A ...............
..................
245.02 Silt Basin Type B ............................................
892.04 Temporary Rock Slit Check Type-A ..........
895.10 Temporary Rock Silt Check Type-B
892.01 Temporary Rock Sediment Dam Type-A -,--„_____
892.02 Temporary Rock ?cdiment Dam Type-B
897.01 Rock PIPa Inlet Piolectlon Type-1 ........... c
897.02 Rock Pipe Inlet Protection Type-13
894.01 Rock Silt Screen
245.04 Stilling Basin ..................................................
Rock Inlet Protection: ILJ1
896.01 TypeA .......................... A 0 -OR•A)
896.02 Type B . ............................... .. OR .. B
896.03 Type C ........:.................:.... 'C .. OP, -- C

12 March, 1992 :''?1
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'Itrol of Access Line.'........... .. A
;lope St:ilcc Line ........ .......... --
(.
ridge. ,
r-?
i`' • . .
.Culver ... .`.::.. ....... .. . . . 1
0 1. 0+0 or
t+ O•
'1'clepliont or.rI'elC, rupli Pole ......... ?1:N11' -o- I10
Tower Pole and Line... • . • • • • • ? • . -?
b r
Power Pole . ' .' .........:. ........ . I i:1l?'t' S 1 11,1101,
l asemcn' Line. .......
ryfoNving I_iniit . ' .........'......... .
'Guard Rail ..' ....:................'... T
S`a'n i to r??. S : ' .. . . ... r--- S S
Pti??er•Line. .... .
;Water Line .'. ..'.'....' ... ..........
CAS
Gas Line .'.... .. ..........:...:. -Q---
PROPOSED E Ix I ST 1.
Chain Link Fence ................. -e? ?- -(?---C1-
ence :..... .......... ?--^:P---
Woven Wire Fence'*
Reforesiacion ' ...::............... .... r-? - xz
Tenlporau'v Silt Hitch TD IsD
= Te•n l p o r a r v SHE l" e i i (: L° ............ °---} I T-- -1 A r----I 1 }-
Te?niporary.Slope -Drain .................. ,
I3`ctrsl? ..:. ... ...... •
Si3t Check Dam 71?9)e A.. .............. ' n
S'ac Check Dam Type I3 ................
.' ' ---?-
S.,Jt Basin JI -p e 'A• ...:.: '....: '.........
Silt Basin T)q) e B ............
..........
noilc Silt: Check Dam ................ , . a..•" -
Td, mp. Slone Dilch Check ...... .
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SILT BASIN, - B
TEMP S-LO PE DRAIN
TEMP SI:LT? DITCH - TsD
EARTH EMBANKMENT -; -?
SILT FENCE. NI H, ill
FIBERGLASS ROVING ?-- FGR
RI P RAPg
TEMPORARY SILT FENCE:
A temporary silt fence is commonly used at the toe of a fill section to prevent off-
site sedimentation. It is made of permeable filter fabric buried at the bottom,
stretched and supported by steel posts. The silt fence reduces the water flow-while
retaining the sediment. They may also be used to divert water flow to protected
outlets. Silt fences need to be checked after each significant rainfall to ensure there
effectiveness. They must be maintained on a regular basis. Silt fences shall not be
installed across streams, ditches, or waterways.
AREAS OF USE:
• At toe of fill sections where sediment runoff can be stored and contained
inside the project limits.
DESIGN CRITERIA:
Material With Wire Without Wire
Fabric Type 3 Class A Type 3 Class B
Steel posts length 5 ft 5 ft.
Post spacing 10 ft. 6 fr. maximum
17 March, 1992
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18 March, 1992
SILT BASIN TYPE-B:

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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ROCK PIPE INLET PROTECTION TYPE-A: 1 a\*
•
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A rock pipe inlet protection type-A is a horseshoe shaped structur;; with a built-in
sediment storage area around the outside perimeter of the structure. The type-A
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 CR=RIA:
• 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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ROCK SILT SCREEN:
A rock silt screen is a low-level uaITI 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 - # 5 or # 57 stone _
• Dam height - 1.5 ft. minimum and 3 ft. maximum ( shall not be higher than
1 ft. above normal flow of stream)
37 March, 1992

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State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
1Lr!?FA
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
February 8, 1999
Mr. C. R. Styles
NC DOT
PO Box 250
Bryson City, NC 28713
Dear Mr. Styles:
Subject: SR 1110
DWQ # 990093
Swain County
On February 2, 1999, your application for a 401 Water Quality Certification for
paving SR 1110 in Swain County was received by the N.C. Division of Water Quality.
The Division will begin to review the project for eventual decision. However, please be
aware that beginning January 1, 1999 that the N.C. General Assembly passed legislation
requiring payment of a fee of $200.00 for this project. The 401 Certification cannot be
issued until this fee is paid. Presently the Department of Transportation and Environment
and Natural Resources are developing a process so these fees will not have to be paid
separately for each project. We anticipate that this agreement will be finalized early in
1999. However until this agreement is completed we will not be able to complete our
action on your request. Until that time, your application will remain on hold as
incomplete.
Please call Cyndi Bell at 919-733-1786 if you have any questions.
FnR. Doffey
cc: Central Files
Asheville DWQ Regional Office
Asheville Field Office US Army Corps of Engineers
Cyndi Bell
John Dorney
Wetlands/401 Unit 4401 Reedy Creek Road Raleigh, North Carolina 27607
Telephone [phone] FAX # [phone]
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