20070918 Ver 1_Application_20070523

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STATE of NORTH CAROLINA
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DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY
GOVERNOR
May 14, 2007
LYNDO TIPPETT
SECRETARY
Mr. David Baker, NCDOT Project Manager O ~ O
U.S. Army Corps of Engineers
151 Patton Avenue, Room 208
Asheville, NC 28801-2714
Subject: Nationwide 14 and Nationwide 33 Permit Application
SR 1315 -Pot Leg Road Extension
Haywood County
State Project No. 140.044158 (DWQ Minor Permit Fee $200)
Dear Mr. Baker:
The North Carolina Department of Transportation (NCDOT) is proposing to widen, grade, and
pave SR 1315, Pot Leg Rd, in Haywood County from the end of pavement for a distance of 0.1
miles. This proposal entails widening and paving the existing gravel road to a standard 18-foot
roadway. The proposed improvements of SR 1315 have been identified as necessary
maintenance and safety improvements. Funds have been allocated for this project, and NCDOT
would like to perform these activities sometime during the 2007-08 paving season.
I am sending astraight-line diagram with the proposed erosion control and construction limits
along this project. In addition, I am sending a typical section of the road, cross sections,
drawings for pipe culvert replacements as well as a marked county map and USGS topographic
map. We propose to install the new culverts slightly below the existing streambed elevations
where bedrock is not encountered to minimize impacts to aquatic habitats and allow the existing
stream gradients to remain as unchanged as physically possible.
The North Carolina Natural Heritage Database was checked for records of threatened and
endangered species. There are no records of listed species for the Hemphill Creek watershed.
There are no records from the confluence of Hemphill Creek with Jonathan Creek to the Pigeon
River. The impact from the culvert replacement will be minor. There will be "no effect" on
threatened or endangered species.

Impacts to historic or cultural resources are not anticipated. If the State Historic Preservation
Office (SHPO) and the Office of State Archaeology determines that further investigations are
required, NCDOT will conduct the appropriate site investigations and obtain compliance from
SHPO prior to project construction.
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 is being effectively controlled. If the planned devices are not
functioning as intended, they will be immediately 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.
Impacts to Waters of the United States
The unnamed tributary to Hemphill Creek appears to have perennial flow. The channel is
composed of cobble, gravel and sand/silt. The channel lacks vegetation. For these reasons, we
believe this stream is under the jurisdiction of the U.S. Army Corps of Engineers. In order to
construct the project in accordance with our current secondary road standards, it will be
necessary to impact waters of the United States in the French Broad River Basin. Specifically,
NCDOT is requesting to extend/replace one metal culvert in an unnamed tributary to Hemphill
Creek (DWQ Class: C, Tr).
Site No. Existing Proposed Condition net Impacts
Station Condition

Site 1 43' x 18" CMP 45' x 24" CMP 2' extension
5+40
Site lA Open Channel Temporary Dike w/ Sandbags 20 ft'
5+40
Site lA Free Flowing Temporary De-watered Channel 95'
5+40 Channel
TotalImpacts (Permanent) 2'
(Temporary) 95'
Permits Requested
NCDOT is hereby requesting authorization under Section 404 of the Clean Water Act to proceed
with the construction project outlined above. By copy of this letter, I am asking Mr. David
McHenry, Mountain Region Coordinator, of the North Carolina Wildlife Resources Commission
(NCWRC) to comment directly to you concerning the 404 Nationwide Permit request.
Also, by copy of this letter, I am requesting authorization under Section 401 of the Clean Water
Act from the North Carolina Department of Environment and Natural Resources (DENR),
Division of Water Quality (DWQ). In addition, I am requesting Mr. McHenry and Mr. Ed Ingle,

Roadside Environmental Field Operations Engineer (NCDOT), to comment directly to me
concerning this permit request.
If you have any questions or need additional information, please contact me at [phone].
Your early review and consideration will be greatly appreciated.
Sincerely,
J nathan L. Woodard, P.E.
District Engineer
cc: Mr. John Hennessy, DWQ, DENR, Raleigh (four copies)
Mr. Mike Parker, DWQ, DENR, Asheville
Mr. David McHenry, Mountain Region Coordinator, NCWRC
Mr. J. B. Setzer, P.E., Division Engineer, NCDOT
Mr. Mark Davis, Division Environmental Officer, NCDOT
Mr. B. T. Williams, P.E., County Maintenance Engineer, NCDOT
Mr. E. L. Ingle, Roadside Environmental Field Operations Engineer, NCDOT

Office Use Only:
Form Version March OS
20070918
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
I. Processing
Check all of the approval(s) requested for this project:
® Section 404 Permit ^ Riparian or Watershed Buffer Rules
^ Section 10 Permit ^ Isolated Wetland Permit from DWQ
® 401 Water Quality Certification ^ Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NW 14 & NW 33
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 VIII,
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
1. Owner/Applicant Information
Name: North Carolina Department of Transportation
Mailing Address: 345 Toot Hollow Road
Br son Cit NC 28713
Attn • J L Woodard PE District Engineer
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: 'woodard 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.)
Name: lvi
Company Affiliation: N/
Mailing Address: N/
Telephone Number: N/A Fax Number: N/
E-mail Address: N/A
Page 1 of 8

III. Project Information
3
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 maybe included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 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 1315 -Pot Leg Road Extension
2. T.I.P. Project Number or State Project Number (NCDOT Only): 140.044158
Property Identification Number (Tax PIN): N/A
4. Location
County: Haywood Nearest Town: Maggie Valley
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers, landmarks, etc.): From Maggie Valley take US 19
East to US 276. Turn left onto US 276 and continue North until you reach SR 1318
(,Hemphill Rd) Turn left onto SR 1318 and follow until you yet to SR 1315 (Pot Leg Rd_).
Turn left onto SR 1315 and follow to the end of pavement. This is the project.
5. Site coordinates, if available (UTM or Lat/Long): 35.5535° N 83.0570° W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres)
0.55 acres
7. Name of nearest receiving body of water: Hemphill Creek (DWQ Class: C, Tr)
8. River Basin: French 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: Residential, woodlands
Page 2 of 8

10. Describe the overall project in detail, including the type of equipment to be used: This
project includes cutting and filling earthwork where needed, replacing old drainage structures
that are inadequate, making the road safer by changing the road profile, and paving.
Equipment to be used will be Track Hoes, Back Hoes, Dump Trucks, Bulldozers, Manual
Labor, sandbags, pumps and diversion pipes
11. Explain the purpose of the proposed work: To pave, widen the shoulders, and improve the
aligmnent of SR 1315 to meet current NCDOT secondary road standards.
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
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 additional permits 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. 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 VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
Page 3 of 8

1. Provide a written description of the proposed impacts: Plastic sheeting and sandbags will be
placed in the stream channel above culvert to create an impervious dike. Water will be
diverted or .pumped around culvert installation site. Culverts will be installed and the
temporary impervious dike will be removed after culvert installation.
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)
Type of Impact Type of Wetland
(e.g., forested, marsh,
herbaceous, bog, etc.) Located within
100-year
Floodplain
( es/no) Distance to
Nearest
Stream
(linear feet) Area of
Impact
(acres)
N/A N/A N/A N/A N/A N/A

Total Wetland Impact (acres) N/A
3. List the total acreage (estimated) of all existing wetlands on the property: N/A
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
Perennial o Average Impact Area of
Number Stream Name Type of Impact ~
Intermittent Stream Width Length Impact

(indicate on ma) .
Before Im act ~ (linear feet)
(acres)
1@ Station 5+40 UT to Hempill
Creek Culvert Extension P 2 2 0.00009
lA @ Station 5+40 UT tCreek pill Impervious Dike P 4 (Dike) ~ 5 0.00046
lA @ Station 5+40 UT to Hempill
Creek Flow Diversion P 2 95 N/A
Total Permanent Stream Impact (by length and acreage) 2 .00009
Total Temporary Impacts for Flow Diversion & Impervious Dikes Respectively I 95 0.00046
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.
Page 4 of 8

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 N/A N/A N/A N/A

Total Open Water Impact (acres) N/A
5
List the cumulative impact to all Waters of the U.S. resulting from the project:
Stream Impact (acres): 0.00009
Wetland Impact (acres): 0
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres) 0.00009
Total Stream Impact (linear feet): Permanent 2
Total De-watering Impact (linear feet) Temporary 95
6. 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 USACE.
7. 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.): N/A
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): N/A
Current land use in the vicinity of the pond:
Size of watershed draining to pond: N/A Expected pond surface area: N/A
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It maybe 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 culvert will be extended
the minimum lets t~h necessary to meet current NCDOT standards. All pipe extensions will be
placed below the existin¢ stream bed so natural substrate can be re-established. The culvert
installation site will be de-watered to minimize impacts to downstream aquatic resources.
Page 5 of 8

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 1.50 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 maybe 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 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/strm~ide.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.
N/A
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): 2'
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
Amount ofNon-riparian wetland mitigation requested (acres): N/A
Amount of Coastal wetland mitigation requested (acres): N/A
Page 6 of 8

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 a NEPA/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)
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.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water^Supply Bu®r Requirements), or other (please
identify N/A )? 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
(s uare feet) Multiplier Required
Miti ation
1 3 (2 for Catawba)
2 1.5
Total N/A
cone i ex[enas out su reet perpenaicutar from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
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 15A NCAC 2B .0242 or .0244, or .0260. N/A
Page 7 of 8

XI. 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.
Stormwater will be diverted throu settling basins or grass lined buffers prior to entering
streams. (See erosion control plan).
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.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ^ No
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://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description:
The road is being upgraded to meet current NCDOT secondary road standards. The paving of
this 540-foot section of road should not alter the rate of development in the immediate area.
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).
D
Applicant/Age~t's Signature Date
is signature is valid only if an authorization letter from the applicant is provided.)
Page 8 of 8

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ADDITION ~~~/rs/~~~
IMPROVEMENT
TO BE PAVED
P. POLES TO BE MOVED z-
T. POLES TO BE MOVED ~
R/W WIDTH '~~
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DATE 9 - /D • 0 3
DESIGN YEAR ~~'~~
DESIGN ADT -~,~-

EROSION Ct3NTROL
DE'T'AILS AND
SPECI~1i:z4'i'iONS
Std" ~

~; rrl
245.03
245.05
893.01
890.05
245.01
245.02
892.04
895.10
892.01
892.02
897.01
897.02
894.01
245.04
896.01
896.02
896.03
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Temporary Sllt Dltch ____________ _ ~ .
. .... ........... TSD
Temporary Diversion
............................. 7D
Temporary Sllt Fence _ ~t---fly
.. . ...............
Temporary's :;lope Drain with Earth Berm --= +-
S'It Basin Type A ...............' ,~.._.......-----, ....---...
Silt Basin Type B _____________ ,
Temporary Rock Sllt Check Type-A ~" ~
Temporary Rock Sllt Check Type-B _____-_____ ~
Temporary Roclc Sediment Dam Type-A ~~
Temporary Roclc ~edimenl Darn Type-B
Rock Plpe Inlet Prolectlon iype-A ______- _ ~~
Rock Pipe Inlet Prolectlon Type-B ___________ ~'s:~'t
Rock Sllt Screen ~~
Stilling Bas(n ___________________________
Rock Inlet Prolectlon:
1u1.. .. 1j .
Type A .........................._... A ~u{ OR A JJ
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TYPe 6 ............................... B ~ .. pR .. B JJ
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TYPe 0 ........................... 'C ~ .. pP .. C
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DESIGN FOR SILT BASIN
~,,, 6,00 CUBIC FEET PER ACP.E
CHECKED EVERY STORM EVENT AND CLEAidED OUT ~~HEN HALF FULL
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Erosion Control Details and Specifications
Std # Description Symbol
1630.03 Temporary Silt Ditch ~ d~---
1630.0 Temporary Di~•ersion -~ ~ ~.
160.01 Temporary Silt Fence ~; ~ ~ ~,
~~~
1622.01 Temporary Slope Drain and Earth Bei~il ~ `- `- `- •
1630.01 Riser Basin _ ~-;

1630.02 Silt Basin Type B ~///~
1633.01 Temporary Rock Silt Check Type :~ ~}};~;>
1633.02 Temporary Rock Silt Check Type B
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1634.01
Temporary Rock Sediment Dam T}pe ~ '
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1634.02 Temporary Rock Sediment Dam T`pe B r~
163.01 Rock Pipe Inlet Protection Type A ;mss:
163.02 Rock Pipe Inlet Protections Type B `_~~
1636.01 Rock Silt Screen
1630.04 Stilling Basin ~ ;~
1632.01 Rock Inlet Protection Typz A _ ~- -~ ~ .
1632.02 Rock Inlet Protection T}pz B ~ : -.. -= •-
1632.03 Rock Inlet Protection Type C ' ~~ •- ~ ~ `
•.
-- En~•ironmentally Sensiti~•e Area /

Environmentally Sensitive Area
This project is located in an "Environmentally Sensitive Area". This designation requires special
procedures to be used for clearing and grubbing temporary stream crossings and grading operations within
the area identified on the plans. This also requires special procedures to be used for seeding and mulching
and staged seeding within the project.
Clearing and Grubbing
In areas identified on the erosion control plans as "Environmentally Sensitive Areas" clearing operations
can be performed, but not grubbing operations until immediately prior to beginning grading operations as
described in Section 200, Article 200-1, in the Standard Specifications. The "Environmentally Sensitive
Area" shall be defined as a 50 foot buffer zone on both sides of the stream (or depression) measured from
top of stream bank (or center of depression). Only clearing operations (not grubbing) shall be allowed in
this buffer zone until immediately prior to beginning grading operations. Erosion control devices shall be
installed immediately following the clearing operation.
Grading
Once grading operations begin in identified "Environmentally Sensitive Areas" work will progress in a
continuous manner until complete. All construction within these areas must progress in a continuous
manner such that each phase is complete and areas permanently stabilized prior to beginning of the next
phase. Failure to complete any phase of construction in a continuous manner in "Environmentally
Sensitive Areas" as specified will be just cause for the Engineer to direct the suspension of work in
accordance with Section 108-7 of the Standard Specifications.
Temporary Stream Crossings
Any crossing of streams within the limits of this project must be accomplished in accordance with Section
107-13(b) of the Standard Specifications.
Seeding and Mulching
Seeding and mulching shall be performed in accordance with Section 1660 of the Standard Specifications
and vegetative cover sufficient to restrain erosion shall be installed immediately following grade
establishment
Seeding and mulching shall be performed on the areas disturbed by construction immediately following
final grade establishment. No appreciable time shall lapse into the contract time without stabilization of
slopes, ditches and other areas within the "Environmentally Sensitive Areas" as indicated on the EC Plans.
Stage Seeding
The work covered by this section shall consist of the establishment of a vegetative cover on cut and fill
slopes as grading progresses. Seeding and mulching shall be done in stages on cut and fill slopes which are
greater than 20 feet in height or greaten than 2 acres in area. Each stage shall not exceed the limits stated
above.

Erosion Control Schedule
• Install erosion control measures according to plans in all outlets and at other
discharge points after clearing but before grubbing
• Clear and clean outfall ditches leaving side slopes at an angle that can be retained by
vegetation. These areas will require stage seeding and mulching.
• Begin grading of roadway ditches. Place erosion control measures along roadway
ditches as grading progresses and conditions allow.
• Seed and mulch all disturbed areas as soon as any phase of grading is completed.
(Note there are 15 working days/21 calendar days to complete seeding and mulching.
A working day is defined as a day exclusive of Saturday or Sunday during which
weather conditions or soil conditions permit land-disturbing activity.)
• Clean out and/or rework all temporary erosion control measures after any significant
rainfall event (or as otherwise needed). These measures should be maintained until a
permanent vegetative cover is established.
Wet Pipe Installation Schedule
• Install erosion control devices.
• Remove material and existing pipe while limiting, as much as possible, material and
sediment from entering the stream and/or escaping from the project.
• Prepare pipe foundation while taking care to limit material and sediment from
entering the stream and/or escaping from the project. Where possible new grade
should be below the existing streambed. If needed, bedding material will be clean
stone (especially in Trout and HQW waters).
• Place new pipe and compact fill.
• 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.
• Establish permanent vegetation as soon as possible.

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SR 1315
Inlet
Outlet