19940446 Ver 1_Complete File_19940512

State of North Carolina
Department of Environment,
Health and Natural Resources / • A
0
Division of Environmental Management
look
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
E H N F
A. Preston Howard, Jr., P.E., Director
May 13, 1994
Granam County
DEM Project # 94446
APPROVAL of 401 Water Quality Certification
Mr. W. Trent Anderson
NC DOT
P.O. Box 1551
Andrews, N.C. 28901
Dear Mr. Anderson:
You have our approval to place fill material in 0.07 acres of wetlands or waters for
the purpose of road improvement at SR 1240, as you described in your application dated 5
May, 1994. After reviewing your application, we have decided that this fill is covered by
General Water Quality Certification Number 2735. This certification allows you to use
General Permit Number 031 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. If you change your project, you must notify us and you may be required to
send us a new application. For this approval to be valid, you must follow the conditions
listed in the attached certification. In addition, you should get any other federal, state or
local permits before you go ahead with your project.
If you do not accept any of the conditions of this certification, you may ask for an
adjudicatory hearing. You must act within 30 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 Environmental Management under
Section 401 of the Clean Water Act. If you have any questions, please telephone John
Dorney at 919-733-1786.
Sincerely,
eston Howard, 1J. P.E.
ector
Attachment /
cc: Wilmington District Corps of Engineers
Corps of Engineers Asheville Field Office
Asheville DEM Regional Office
Mr. John Dorney
Central Files
94446.1tr
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post-consumer paper
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STATE OF NORTH CAROLINA
DEPARTMENT OF T11ANSPORTATION
JAMES B. HUNT. J PL
GOVERNOR
GRAHAM COUNTY
SR 1240
DIVISION OF HIGHWAYS
P. 0. Box 1551
Andrews, N. C. 28901
May 5, 1994
Mr. Bob Johnson
US Army Corps of Engineers
Reg. Field Office
Rm. 75, Grove Arcade Building
37 Battery Park Avenue
Asheville, N. C. 28801-2714
Dear Mr': Johnson:
Lt li
QUALl , 'ti ...
The North Carolina Department of Transportation
(NCDOT) is proposing to grade, drain, base, and pave
primarily along the existing roadway of SR 1240, Upper
Sawyers Creek Road, in Graham County. In order to construct
this project in accordance with our current secondary road
standards and due to the proximity of a trout stream
(Sawyers Creek and tributaries, DEM Class C - Trout Water)
and replacement of pipe culverts, we are requesting
authorization under Section 404 of the Clean Water Act.
I am sending a straight line diagram with the proposed
erosion control, stream, stream bank, and construction
limits at various sites along the project where we will be
in conflict with the streams. In addition, I am sending a
typical section of the road, cross sections, drawings for
pipe culvert replacements, general notes and standards on
some erosion control measures, and a marked map. We propose
to install the new culverts slightly below the existing
streambed elevations where bedrock is not encountered to
minimize impacts to wildlife habitat and allow the existing
stream gradients to remain as unchanged as is physically
possible.
At Site 12 (STA 51+00) a small ground water fed pond is
in conflict with our proposed construction project. It will
be necessary for the pond to be drained and filled with
soil/rock material in order to accommodate the wider typical
section. We propose to pump the water from the pond
directly into Sawyers Creek unless the turbidity of the pond
is such that a stilling basin is required. If this occurs,
401 ISSUED
R. SAMUEL HUNT 111
SECRETARY
MAY I ? 1994
NO,
f
Mr. Bob Johnson
Page 2
May 5,.1994
we will install a standard stilling basin of a size to be
one half the volume of the pond. The pond has a surface.
area of approximately 2,230 square feet and an average depth
of 1.5 feet.
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 erosion and sedimentation are being
effectively controlled. If the planned devices are not
functioning as intended, they will immediately be replaced
with better devices. The rock silt screens and other
erosion control devices will be in place prior to pipe
culvert construction and will remain in place until the
project is stabilized.
By copy of this letter 1 am asking Mr. Mickey Clemmons,
North C4rolina Wildlife Resources Commission (NCWRC)
District Fisheries Biologist to comment directly to you
concerning the 404 Nationwide Perrnit Request.
A request will be made on this project for a temporary
encroachment in the Trout Water Buffer Zone of Sawyers Creek
and I am asking Mr. Clemmons and Mr. Ed Ingle, Area Roadside
Environmental Engineer (NCDOT) to comment directly to me
concerning the Trout Water Buffer Zone Encroachment.
Also, by copy of this letter, I am requesting
authorization to proceed under Section 401 of the Clean
Water Act from the Division of Environmental Management..
We would like to begin construction as soon as
possible. If further information is required, please
contact me at (704-321-4105. Your early review and
consideration will be greatly appreciated.
Sincerely,
W. Trent Anderson
County Maintenance Engineer
WTA/rr
Attachments
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. J. B. Setzer, P. E., District Engineer
Mr. Eric Galamb, Water Quality Certification Unit, DEM
Mr. Mickey Clemmons, Dist. Fisheries Biologist, NCWRC
DE:v1 ID: ACTION ID:
Nationwide Permit Requested (Provide Nationwide Permit #): 14
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
CORPS OF ENGINEERS
DEPARTMENT OF THE ARMY
P.O. Box 1890
Wilmington, NC 28402-1890
ATTN: CESAW-CO-E
Telephone [phone]
WATER QUALITY PLANNING
DIVISION OF ENVIRONMENTAL MANAGEMENT
NC DEPARTMENT OF ENVIRONMENT, HEALTH,
AND NATURAL RESOURCES
P.O. Bo' 29535
Raleigh, NC 27626-0535
ATTN: MR. JOHN DORNEY
Telephone [phone]
ONE (1) COPY OF THIS COMPLETED APPLICATION SHOULD BE SENT TO THE CORPS OF ENGINEERS.
SEVEN (7) COPIES SHOULD BE SENT TO THE N.C. DIVISION OF ENVIRONMENTAL MANAGEMENT.
PLEASE PRINT. pp
1. Owners Name: IyOC Ca?o?ina. Deportme.A of (-an
2. Owners Address: P.O. 60)c I'SS I . AnArews. Nic-- 2890
3. Owners Phone Number (Home):
(Work): 0-704-) 321- 4105
4. If Applicable: Agent's name or responsible corporate official, address, phone number:
W. Trend ?nde «?-
5. Location of work (MUST ATTACH MAP). County: G raha m.,
Nearest Town or City: Rob b 'i yls vi l k e NC.
Specific Location (Include road numbers, landmarks, etc.): S R l 2 4 O C y e S4 w ue 5
cceek ?oad1
6. Name of Closest Stream/River: S O w u ec s e r ek
7. River Basin: L i We Te n ne--,s ? Rive( 8. Is this project located in a watershed classified as rou SA, HQW, ORW, WS I, or WS 11? YES pQ NO [ ]
9. Have any Section 404 permits been previously requested for use on this property? YES [ ] NO P4
If yes, explain.
10. Estimated total number of acres of waters of the U.S., including wetlands, located on project site:
11. Number of acres of waters of the U.S., including wetlands, impacted by the proposed project:
Filled: O.OZ Acre. @ Crosse r,?5 -E- O.OS Acre Po?
Drained: O. O'S At c -,r e. eo rJ
Flooded:
Excavated:
Total Impacted: O , O -7 Ac<-c_
12. Description of proposed work (Attach PLANS-8 1/2" X 11" drawings only): I O L,--J I A e?? a rtk page
SR 1240 to meet mug-A- t4CCDOY sfarjaods.
13. Purpose of proposed work: So mom.
14. State reasons why the applicant believes that this activity must a carved out in wetlands. Also, note measures
taken to minimize wetland impacts. Se& .ac?n en
15. You are required to contact the U.S. Fish and Wildlife Service (USFWS) and/or National Marine Fisheries Service
(NMFS) regarding the presence or any Federally listed orproposed for listing endangered or threatened species or critical
habitat in the permit area that may be affected by the proposed project. Have you done so? YES [X] NO[
)
RESPONSES FROM THE USFWS AND/OR NMFS SHOULD BE FORWARDED TO CORPS.w' ?h "?i'1 cati o+?
16. You are required to contact the State Historic Preservation Officer (SHPO) regarding the presence of historic
properties in the permit area which may be affected by the proposed project? Have you done so? YES [N) NO[ ]
RESPONSE FROM THE SHPO SHOULD BE FORWARDED TO CORPS. L AVA a pPl i caj ;;O -
17. Additional information required by DEM:
A. Wetland delineation map showing all wetlands, streams, and lakes on the property.,
B. If available, representative photograph of wetlands to be impacted by project.
C. If delineation was performed by a consultant, include all data sheets relevant to the placement of the
delineation line.
D. If a storrrrwater management plan is required for this project, attach copy.
E. What is land use of surrounding property? R4«J tarmkonl and woad larj. ?es ide?? i
F. If applicable, what is proposed method of sewage disposal?
0. -rsaA iif AA,,--?) M a S 1994-
Owner's Signature \ID It Date

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EROSION CONTROL
DETAILS AND
SPECIFICATIONS
Std. Description Sym bol

245.03 Temporary Silt Ditch TSo VI - 2
245.05 Temporary Diversion ,,,,,,,,,,,,,,,,,,,,,,,,,,,,, VI - 4
01
893 Temporary Silt Fence VI 6
. ______ __
890.05 Temporary Slope Drain with Earth Berm
'•
245.01 Silt Basin Type A
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245.02 .
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Silt Basin Type B -- - VI - 12
892.04 Temporary Rock Silt Check Type-A ...,,,,, _ ---------- - VI - 14
895.10 Temporary Rock Silt Check Type-B ........ ....* ___________ _ Vi -16
892.01 Temporary Rock Sediment Dam Type-A . .........,, __ _ VI -18
892.02 Temporary Rock Sediment Dam Type-B . ..
U VI - 20
897.01 Rock Pipe Inlet Protection ......................... _ ° -- - VI - 22
894.01 Rock Silt Screen ..................................... ....
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VI - 24
245.04 Stilling Basin ......................................... .......... .. ----- VI - 26
Rock Inlet Protection:
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896.01 Type A ............................... A ? --OR •- A ) ----- VI - 30
896.02 Type B ............................... B ?? - OR • B )? ----- VI 32
896.03 Type C ............................... C -- OR -• C ) ---- Vi - 34
VI-1
March, 1993
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TEMPORARY SILT DITCH:
TSD --
A temporary silt ditch shall be used in place of silt fence in many situations.
Temporary silt ditches shall be used at the toe of fill slopes to divert runoff into
sediment basins, temporary rock sediment dams, temporary rock silt checks and/or
other sedimentation control measures. Temporary silt ditches are approximately 1
ft. deep, 2:1 side slopes with an optional earth berm.
AREAS OF USE:
• Toe of fill slopes where fill exceeds 3 ft in vertical height.
• Along streams to intercept flow and/or divert to a controlled outlet.

VI-2 March, 1993
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TEAPORARY 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 WirWithout Wire
Fabric Type 3 Class A Type 3 Class B
Steel posts length 5 ft 5 ft.
Posy spacing 10 ft. 6 ft. maximum
4
VI-6 March, 1993

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VI-7 March, 1993
Siou BASIN TYPE-B: 0007
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 tunes 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 CRrrmA:
• Width - variable
• Length - 2 times width
• Depth - 2 ft. minimum storage - 1800 cubic feet/acre (equals L x W x D)
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VI-13 March, 1993
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TEMPORARY RoCK SILT CHECK TYPE-B:
A temporary rock silt check type-B (also called check dam) is a small dam with a
weir used to reduce gullying in drainage ditches that are to be filled or
permanently stabilized at a later date. These type-B rock silt checks help reduce
the flow velocity and are generally made of class-B stone. They are used in ditches
during construction where the grade meets and/or exceeds 3%.
AREAS OF USE:
• In channels, roadside ditch outlets, temporary silt ditches, and temporary
diversions.
• In conjunction with type-B silt basins.
DESIGN CRITERIA:
• Center of rock silt check shall be at least 1 foot lower than the outer edges
(top of channel sides)
• The spacing (ft.) _ (3 / % of ditch grade) X 100 ft.

10
VI-16 March, 1993
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ROCK PIPE INLET PROTECTION:
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A rock pipe inlet protection is a horseshoe shaped structure with a built-in
sediment storage area around the outside perimeter of the structure. The rock pipe
inlet protection shall be used at pipe inlets no larger than 24 inches in diameter
where it is receiving flow from several directions. The 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. This device can also be used
around the inlet of temporary slope drains where space is limited at the outlet end
of the slope drain such that a basin or other device can not be used.
AREAS OF USE:
• At inlets to pipes no larger than 24 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

VI-22 March, 1993
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ROCK SILT SCREENS
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 - # 5 or # 57 stone
• Da&height - 1.5 ft. minimum and 3 ft. maximum ( shall not be higher than
1 ft. above normal flow of stream)

VI-24 March, 1993

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VI-25 March, 1993
STILLING BASINS
A stilling basin is used where streams are diverted due to culvert construction.
Sediment laden water is pumped into earth dikes constructed in a rectangular form.
The sediment is collected prior to the water exiting through a permeable stone
drain back to the receiving stream. An 8" pipe is used as an overflow pipe to avoid
washouts.
AREAS OF USE:
• At culvert construction sites where streams area diverted.
• At construction sites where sediment laden water must first be filtered
before returning to natural streams.
DESIGN CRITERIA:
• Minimum diameter of overflow pipe - 8 inches.
• Material for overflow pipe - any DOT approved pipe material.
• Height of earth dikes not to exceed 4 feet.
• Stilling basin size is variable and dependent on site requirements.
• Guide for size of basin - should be 1/2 the volume of the site to be pumped.

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VI-27 March, 1993
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PIPE OUTLET ENERGY DISSIPATOR: 00
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A pipe outlet energy dissipator shall be used at pipe outlets to slow the water
velocities when it exits the pipe and flows out ditched or natural waterways. It is
an apron of stone of a sufficient thickness to protect the outlet area from scouring
out and causing off-site sedimentation damage. Pipe outlet energy dissipators
should be built according to the guideline chart shown on page VIII-3 of this
manual.
AREAS OF USE:
• Outlets of pipes and culverts to prevent scouring.
DESIGN CRITERIA:
• In accordance with chart on page VIII-3.
• Filter fabric, or six inch layer of gravel, shall be used under stone.
MATERIALS:
• Filter fabric shall meet requirements of section 1056 of Standard
Specifications for Roads and Structures, January 1, 1990, for type II filter
fabric.
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VI-34 March, 1993

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VI-35 March, 1993

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RIP RAP APRON ENERGY DISSIPATOR
Pipe Diameter (in) Pine Slope (%)
Q,f L.Q 2&
15 L=(ft) 5 5 7.5 7.5 10
W = (ft) 4 4 5.5 5.5 6.5
D = (in) 9 9 24 24 24
S= class A B B B B/1
is L=(ft) 9 9 12 12
W = (ft) 4.5 6 6 7.5 7.5
D = (in) 9 24 24 24 24
S = dams A B B B/1 B/1
21 L = (ft) 7 10.5 10.5 1 21
W = (ft) 5 7 7 8.5 12
D = (in) 9 24 24 24 24
S= dams A B B B/1 1
2 L _ (ft) 12 12 1 20 2
W = (ft) 8 8 10 12 14
D = (in) 24 24 24 24 24
S= class B B B/1 1 1
27 i, _ (ft) 13.5 13.5 18 27 27
W = (ft) 9.5 9.5 11.5 16 16
D = (in) 24 24 24 24 24
S s class B B B/1 1 1
30 1, - (ft) 15 15 20 30 30
W - (ft) 10 10 12.5 17.5 17.5
D - (in) 24 24 24 24 24
S: class B B B/1 1 1
33 L : (ft) l&5 22 22 33
W = (ft) 11 13.5 13.5 19
'• D - (in) 24 24 24 24
S = class B B/1 B/1 1
36 L=(ft) is 2 30 36
W = (ft) 12 15 1s 21
D = (in) 24 24 24 24
S = class B B/1 B/1 1
42 L = (ft) 28 28 2
W = (ft) 17.5 17.5 24.5
D - (in) 24 24 24
S = class B/1 B/1 B/1
48 L = (ft) 32 0 8
W = (ft) 20 24 28
D = (in) 24 24 24
S = dams B/1 B/1 1
54 L = (ft) 36 5 5
W = (ft) 22.5 27 31.5
D = (in) 24 24 24
S = class B/1 1 1
60 L = (ft) 0 50
W - (ft) 25 30
D = (in) 24 30
S = dams 1 1/2
66

L=(ft)

55
-66
W = (ft) 33 38.5
D = (in) 30 30
S = class 1/2 1/2
2 L = (ft) 0 72
W = (ft) 36 42
D = (in) 30 30
S = class 1/2 1/2
L = length of apron (ft) W = width of apron (ft) D = thickness of stone (in) S = class of stone
• Recommendations only - install as much of pad as space allows.
s Filter fabric should be used when soil conditions warrants.
VIII- 3 March, 1993