20080523 Ver 1_Application_20080324

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STATE oF~ NORTH CAROLINA .~A~
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DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY LYNDO TIPPETT
GOVIiItNOR SI~:C'RETnRY
PO BOX 3279, ASHEVILLE, NC 28802
March 18, 2008
Mr. David Baker
US Army Corps of Engineers O ~ ®~ t~
151 Patton Avenue, Room 208 Le
Asheville, NC 28801-5006
Subject: Nationwide Permits #14
SR 1782, Rhom Road
State Project No. 130.059054 (DWQ Minor Permit Fee $240)
McDowell County, NC
Dear Mr. Baker:
I have enclosed astraight-line diagram with erosion control plan, a PCN application for
NWP #14, and a vicinity map relative to the proposed project on SR 1782 Rhom Road,
McDowell County, NC.
Rhom Road is currently a 16-18 feet wide gravel road. Division of Highways plans to
pave the road 18 feet wide and increase the typical section. Grading will be light.
We propose to extend one (1) pipe culvert on an UT to Camp Branch. Total culvert
extension will be 10 linear feet with a temporary impervious dike for dewatering during
installation. The UT is an approximately 2-foot wide stream with riffle/pool habitats and
gravel/sand substrate. Bed/bank features are prominent.
No stream relocation will be performed for the project. Existing channel morphology
will be maintained upstream and downstream of the culvert. The culverts will be placed
below existing streambed elevation whenever possible. Riparian vegetation will be
reestablished along disturbed areas associated with the culvert extensions. Stormwater
will be diverted through grass-lined ditches or vegetated buffers prior to entering streams.

Mr. David Baker
Page -2 SR 1782, McDowell County
March 18, 2008
No effect on federally listed species (threatened or endangered) or their habitats is
anticipated.
As a part of the 401 Certification process, a copy of the application will be forwarded to
the NC State Historic Preservation Office as required by Section 106 of the National
Historic Preservation Act of 1.966 and GS 121-12(a).
By copy of this letter, we request David McHenry, North Carolina Wildlife Resources
Commission Coordinator, to comment directly to the Corps concerning the permit
request.
By copy of this letter, we are asking Ed Ingle, Area Roadside Field Operations Engineer,
to comment on the above project. The UT of Camp Branch is not classified as trout. A
buffer variance will not be required for the project.
By copy of this letter, I am forwarding four (4) copies of the application package to Brian
Wrenn, NC Division of Water Quality, 401/Wetland Unit and an additional copy to Mike
Parker, NC DWQ Asheville Regional Office for review and comment. Please charge the
application fee of $240.00 to WBS element # 130.059054. Please forward comments
directly to the Corps with copy to Division 13 Environmental Officer.
Your earliest consideration for this request would be greatly appreciated. If you have any
questions or information needs, please contact me at [phone].
Sincerely,
~~~~
Roger D. Bryan
Division 13 Environmental Officer
Enclosures
cc: J.J. Swain, Jr., P.E.
D.R. McNeal, P.E.
Ed Ingle, CPESC
David McHenry
Brian Wrenn
Mike Parker

Office Use Only: Form Version March OJ
USACE Action ID No. DWQ No. 2 0 8 0 5 2 3
(It any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
I. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit ^ Riparian or Watershed Buffer Rules
^ Section l0 Permit ^ Isolated Wetland Permit from DWQ
® 401 Water Quality Certification ^ Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested:
NWP 14
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 Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section V[II,
and check here: ^
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ^
II. Applicant Information
Owner/Applicant Information
Name: J.J. Swain, Jr. P.E. Division Engineer
Mailing Address: NC Department of Transportation
P.O. Box 3279
Asheville, NC 28802
Telephone Number: 828-251-6171 Fax Number: 828-251-6394
E-mail. Address: rdbryan(c~dot.state.nc.us
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.) N/A
Name:
Company Affiliation:
Mailing Address:
Telephone Number:
E-mail Address:
Fax Number:
Page I of 9

III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USAGE requires information to be submitted on sheets no larger than l l by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: SR 1782, Rhom Road
2. T.LP. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): N/A
4. Location
County: McDowell Nearest Town: Vein Mountain
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers/names, landmarks, etc.): SR 1782 is located off US
221 and SR 1781 approximately 2 miles north of the McDowell/Rutherford County line (see
marl.
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum):
35.57132° N 81.95689° W
6. Property size (acres): 7.0-Acres
7. Name of nearest receiving body of water: UT to Camp Branch (WS - V)
8. River Basin: Broad
(Note -this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site is an existinggravel road. Surrounding properties
are railroad, forest, and very low density residential
130.059054
Page ? of 9

10. Describe the overall project in detail, including the type of equipment to be used: We
propose to Grade, drain base pave and install erosion control measures for SR 178 Rhom
Road. The equipment to be utilized includes an excavator backhoe and trucks
11. Explain the purpose of the proposed work: We propose to grade, drain, base, pave and install
erosion control measures for SR 178 We propose to extend an existing 40' culvert by 10
feet. The additional pipe is necessary to widen the install the required typical section A
small impervious dike will be constructed for dewatering duringpipe extension Total
culvert extension will be 10 linear feet The culverts will be installed to insure aquatic life
passage within the streams.
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 USAGE 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.LP. project, along with
construction schedules. N/A
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No, no future plans.
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. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should 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 VItI below. If additional
space is needed for listing or description, please attach a separate sheet.
Page 3 of 9

1. Provide a written description of the proposed impacts: We propose to extend one (1) pipe
culvert on an UT to Camp Branch. Total culvert extension will be 10 linear feet
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
separately list impacts due to both structure and flooding.
Wetland Impact
Site Number

(indicate on map)
T e of Im act
yp p Type of Wetland

(e.g., forested, marsh,
herbaceous, bog, etc.) Located within
100-year
Floodplain
(yes/no) Distance to
Nearest
Stream
(linear feet) Area of
Impact
(acres)
N/A

Total Wetland Impact (acres) N/A
3. List the total acreage (estimated) of all existing wetlands on the property: 0.0
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included. To calculate acreage, multiply length X width, then divide by 43,560.
Stream Impact
Number
(indicate on ma)
Stream Name
Type of Impact Perennial or

Intermittent? Average
Stream Width
Before Im act
p Impact
Length
linear feet
( ) Area of
Im act
p
(acres)
Site 1 (73+00) UT to Camp
Branch pipe Culvert Perennial 2, 10 0.0005
Site I (73+00) UT to Camp
Branch Temp. Dewatering Perennial 2 50 0.0023

Page 4 of 9

Total Stream Impact (by length and acreage) 60' 0.0028
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited. to
fill, excavation, dredging, flooding, drainage, bulkheads, etc.
Open Water Impact
Site Number
(indicate on ma)
Name of Waterbody
(if applicable)
Type of Impact Type of Waterbody
(lake, pond, estuary, sound, bay,

ocean, etc.) Area of
Impact

(acres)
N/A

Total Open Water Impact (acres) N/A
6. List the cumulative impact to all Waters of the U.S. resultin>? from the nroiect:
Stream Impact (acres): 0.0028
Wetland Impact (acres): 0.0
Open Water Impact (acres): 0.0
Total Impact to Waters of the U.S. (acres) 0.0028
Total Temporary Stream Impact (linear feet): 50
Total Permanent Stream Impact (linear feet): 10
7. Isolated Waters
Do any isolated waters exist on the property? ^ Yes ®No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USAGE.
8. 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): ^ uplands ^ stream ^ wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond: Expected pond surface area:
Page 5 of 9

VII. 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 during construction to reduce impacts. The existing secondary road
must be improved to meet current safety standards for paved roads The pipe culvert
replacement requested is the minimum necessary to establish an appropriate typical section for
the roadway. Riparian vegetation will be established on disturbed areas associated with the
project construction.
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 January 15, 2002, 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.
[f 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 NCEEP 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.us/ncwetlands/strmride html.
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.
Page 6 of 9

We do not feel that mitigation is warranted due to the minimal impacts of the pipe culvert
extension. Additionally_pavin~7 of the roadway should eliminate sedimentation from fines
associated with gavel roadway andprovide a vegetated shoulder to buffer runoff.
If required, we propose to utilize the Ecosystem Enhancement Pro rg am (EEP) for the
mitigation requirements for the proposed impacts. NCDOT will be coordinating with the
EEP to obtain the appropriate mitigation credits if required.
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed., please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount ofNon-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ® No ^
2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: if you are not sure whether aNEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ^ No
3. 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 ^ No ^
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) - N/A
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.
Page 7 o f 9

L Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Neuse), i5A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ^ No
2. If "yes", 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 Multiplier Required
(square feet) Mitigation
1 3 (2 for Catawba)
2 1.5
Total
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel: 'Lone 2 extends an
additional 20 leet from the edge of Lone I.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e..
Donation of Property, Riparian Buffer Restoration /Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within I SA NCAC 2B .0242 or .0244, or .0260.
XL Stormwater (required by DWQ)
Describe impervious acreage (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. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. The existin compacted gravel roadway acts as
an impervious surface. Paving of the roadway should eliminate sedimentation from fines
associated with Gravel surface treatment The roadway surface will be 40% of right of way
acrea~*e. Stormwater will be diverted throutTh settling basins or l;rass lined buffers rior to
entering the streams.
XII. Sewage Disposal (required by DWQ)
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.
N/A
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ^ No
Page 8 of 9

Is this an after-the-fact permit application`? Yes ^ No
XIV. Cumulative Impacts (required by DWQ)
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ^ No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http:/ih2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description:
XV. 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).
With regard to hazardous spill basins the road is not classified as an arterial route• therefore
hazardous spill basins are not required.

J Appli~'ant/Agent's Signature / Fate
Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9

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Name: GLENWOOD Location: 035.5681465° N 081.9593034° W
Date: 3/18/2008 Caption: SR 1782 Rhom Road
Scale: 1 inch equals 1000 feet McDowell County, NC
coov~~anc ~c~ i ssa

Figure I. SR 1782, Rhom Road, Station 73+00, UT to Camp Branch, McDowell County, IYC.

a
SECONDARY ROAD PAVING PROJECT
~ SHEET 1 OF 11
,.--
COUNTY: Mc Dowell TOWNSHIP: Brackett
PROJECT: SR. 1782, Rhom Rd. LENGTH: 6,079 feet, 1.15 miles
WORK TYPE: grade, drain, base, pave, erosion control RURAL PRIORITY #: g
LOCATION: From SR. 1782, 0.12 miles east of SR. 1781, SUBD/RESID. PRIORITY #:
thence northeast for 1.15 miles.
WBS ELEMENT NO: CONSTRUCTION W. O. NO.
~_ ~y, .
DATE: 4/3/2007 SCALE: 1"=50' DRAWN BY:
NOTES AND P I NS PERTAINING TO STRAIGHT LINE DIAGRAM
1. Assigned right of way agent needs to verify all property owners. Property owners shown on
the straight line diagram are taken from tax maps only.
2. Fences to be moved off the right of way and reset off right of way by the Department of
Transportation crews. Any new materials, posts, wire, etc.. to be supplied by the property
owner.
3. Existing asphalt or concrete drives to be tied in with asphalt if the existing driveway is
within 20 feet of proposed centerline. See any exceptions on straight line diagram.
4. Driveway pipes to be furnished and installed as needed by Department of Transportation
crews in existing driveways.
5. Existing water lines, sewer lines, drain lines, etc., under road project to be adjusted by
Department of Transportation as needed during construction. Property owners to supply
all materials and release Department of Transportation from any liability.
6. Underground utility lines to be located by owner. Lines to be adjusted by owner as needed,
otherwise retain.
7. Note proposed right of way markers shown on straight line diagram.
8. Please inform property owners that cuts and fills could exceed proposed right of way.
9. The erosion plan should be used for erosion control purposes only.
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Page 1

' SR 1782. RHOM RD. SHEET_~OF ~_
~ MCDOWELL COUNTY
TYPICAL SECTION
R/W
!F 50 R/w
E
A. FILL SLOPE 2 : I ABC COMPACTED
B. SHOULDER SLOPE 1' PER FT. ABC LOOSE
C. DITCH SLOPE 4 ~ I TONS (DRIVES)
D. CUT SLOPE 1%2:1 TONS (INTERS.) STONE BY
TONS (ROAD)
TONS (TOTAL)
I 7' o~ ,,, ., _.

SHEETS pF1L
FULL
SUPERELEVAT(ON
FULL SUPERELEVATION
SECTION - EE
2/3
SUPERELEVATION
2/3 SUPERELEVATION
P. C. OR P, T,
SECTION - DD
SUPERELEVAT[ON
NORMAL CROWN NORMAL CROWN
SECTION - CC
LEVEL NORMAL CROWN
SECTION - gg
NORMAL CROWN NORMAL CROWN
SECTION - AA
STANDARD METH00 FOR OBTAINING SUPERELEVATION
2 LANE PAVEMENTS
Ideolly, 2/3 of superelevot~on is obtoined of P. C. or P. T,
os shown on Section - DD
Example: if moxlmum superelevotion is +.06 -.06. the superelevotion
of the point of curve or point of tangent is +.04 -,04
.06 X 2/3 = .04
Superelevotion for 18'Povement
.02
04 0.4' E.P, to E.P.
.
.06 0.7' E.P, to E.P,
'

.08 1.1
E.P, to E.P,
1.4' E.P. to
E.P.
Normol Crown - 0.2
d

o Sheet 4 of
EROSION CONTROL PLAN SHEET
Generally, the order of installation of the erosion control measures will be as
follows:
Temporary silt basins shall be installed before clearing and
grubbing begins.
Silt fences and temporary silt ditches shall be installed after
clearing and before grading.
Temporary stone ditch checks shall be installed as soon as
ditch line is established.
Pipe outlet and inlet protection will be done as soon as the
pipe is installed. .
Seeding and other permanent erosion control measures are
to be implemented as soon as practical.
Temporary rock silt checks (type B) will be spaced as required
by percent of grade as described on page VI-16 in the Erosion
And Sedimentation Guidelines.
No. 5 stone, or equivalent, will be used in conjunction with
temporary rock silt check Type-B in locations where water is
leaving the project or entering a pipe.
assn size is 9'x3'x2' for 75 feet o is ur e i c me un ' e
r~ted._
3~0
Silt basin (Type B) are designed for-680 cubic feet per acre every storm event
and cleaned out when half full.
Per permit conditions for Corps of Engineers and the Wildlife Resources
Commission, all pipes in streams 48" or greater must be buried 12" below
streambed elevation. Pipes less than 48" must be buried with 20% of the
diameter below streambed elevation.

Sheet 5 of 11
e i
PIPE INSTALLATION NOTES
1) Install erosion control devices.
2) Remove material and existing pipe while limiting, as much as possible,
material and sediment from entering the stream and/or escaping from project.
3) Prepare pipe foundation while again taking care to limit, as much as possible
material and sediment from entering the stream and/or escaping from project.
Where possible, new grade will be below existing strearnbed. If needed,
bedding material will be clean stone.
4) Place the new pipe and compact backfill.
5) Install slope protection on outlet and inlet ends of pipe. Also complete
installation of erosion control measures and perform maintenance as needed
on existing measures.
6) Establish permanent vegetation as soon as possible.

DESIGN FOR SILT BASIN SHEET ~oF1L
-~ 1800 CUBIC FEET PE ACRE
CHECKED EVERY STORM EVENT AND CLEANED OUT WHEN HALF FULL
NOT TO SCALE
~! \ • ~
2
SILT BASIN - 1
(S. B. 7 )
A~
I"/ ~ MIN I
2' ~~
~-
6 ~ ~~
iylN
2' ?f,
~--
SILT BASIN - 3
(S. B. 21 )
~~
>! \ MIN
2' • 28,
>-
SILT BASIN - 4
(S. B. 28 )
SILT BASIN - 2
(S. B. 14 )

EROSION CONTROL ='""="-
DETRILS qND
SPECIFICRTIONS
Std•
1630.03
1630.05
1605.01
1622.01
1630.01
1630.02
1633.01
1633.02
1634.01
1634.02.
1635.01
1635.02
1636.01
Descri t{a io n Sym~Qj
Temporary Sllt Ditch Ts~
Temporary DlverslOn -~ TO
Temporary Sllt Fence
Temporary Slope Drain
Silt Basin Type A
Silt Basin Type B «~~
Temporary Rock Sllt Check Type A -
Temporary Rock Sllt Check Type B -
Temporary Rock Sedlment Dam Type A -
Temporary Rock Sedlment Dam Type B - ~ .
Rock Plpe Inlet Sedlment Trap Type A - A

Rock Plpe
Inlet
Sedlment Trap
Type
B - a
~B
Rock Sllt Screen
1630.04 Stilling Basin
o, o~

1632.01 Rock Inlet Sediment Trao
Type A ,,,,,,
A °Og - OR - A
~oo~ o
o ~°°o 0
1632.02 Type B B $^ g - OR - B
~o~
000000
1632.03 Type C C g o o - OR - C
~oaoo 0
868.01 Rlp Rap ~ .~~~~~~ ~}~}~~~}~
Pipe Outlet Energy Dlslpator
Ditch Liner ('
1
Pipe Outlet or Inlet Stabilization D
. Environmentally .Sensitive Area

SHEET 8 OF II
ROCK SILT CHECKS -OUTLET OF PIPE
!WIDTH OF ROCK AT THE OUTLET END TO BE 3 TIMES THE DIAMETER
OF THE PIPE AND TAPERED INTO EXISTING DITCH)
M~
5'
18' CSP
RR 18
6~
X H
24' CSP
RR 24
MjN, •
EXISTING DITCH 7,§•
30' CSP
RR 30
MIN,
9'
EXISTING DITCH 9•
36' CSP
RR 36
MIN.
II'
EXISTING DITCH 10.5'
42' CSP
RR 42

~~`
--~
END PROJECT S'
END EXISTING 3i
T
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Sevier
M
s

1~
McDOWELL
SR. 1782, Rhom Rd.:
Begin project at survey station 16+50 in the center of SR. 1782,
0.12 miles east of SR. 1781, thence in a northeasternly direction
for a distance of 6,079 feet, 1.15 miles, to the end of project at
survey station 77+29. _.___~___,
Vein Mo~nfain

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