20060367 Ver 2_Approval Letter_20070417

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April 17. 2007
Wake County
DWQ Project No. 20060367v.2
SR 3015
TIP No. U-3344A
MODIFICATION of APPROVAL of 401 WATER QUALITY CERTIFICATION and NEUSE BUFFER
AUTHORIZATION with ADDITIONAL CONDITIONS
Dr. Gregory Thorpe, Ph.D
NCDOT Project Development & Environmental Analysis Branch
1598 Mail Service Center
Raleigh, NC 27699-1598
Dear Dr. Thorpe:
You have our approval, in accordance with the conditions listed below, for the following additional impacts for the
purpose of widening SR 3015 (Airport Blvd) in Wake County:
New Neuse Ri arian Buffer Im acts
Site Zone 1 minus =Zone 1 Zone 1 Buffer Zone 2 minus =Zone 2 Zone 2 Buffer
Impact Wetlands Buffers (not Mitigation Impact Wetlands Buffers Mitigation
(sq ft) in Zone 1 wetlands) Required (sq ft) in Zone 2 (not Required (using
(sq ft) (sq ft) (using 3:1 ratio) (sq ft) wetlands) 1.5:1 ratio)
s ft
1 810 0 810 N/A 0 0 0 0
Total 810 0 810 0 0 0 0 0
* n/a =Total for Site is less than I/3 acre and 1501inear feet of impact, no mitigation required
Total Additional Buffer Impact for Project: 810 square feet.
The project shall be constructed in accordance with your application modification dated received April 11, 2007.
After reviewing your application, we have decided that these impacts are covered by General Water Quality
Certification Number 3404. This certification corresponds to the Nationwide Permit 14 issued by the Corps of
Engineers. This approval is also valid for the Neuse Riparian Buffer Rules (15A NCAC 2B .0233). In addition, you
should acquire any other federal, state or local permits before you proceed with your project including (but not
limited to) Sediment and Erosion Control, Non-Discharge and Water Supply Watershed regulations. This approval
will expire with the accompanying 404 permit.
This approval is valid solely for the purpose and design described in your application (unless modified below).
Should your project change, you must notify the DWQ and submit 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 the conditions. If total wetland fills for this project (now or in the future) exceed one acre, or of total
impacts to streams (now or in the future) exceed 1501inear feet, compensatory mitigation may be required as
described in 15A NCAC 2H .0506 (h) (6) and (7). For this approval to remain valid, you must adhere to the
conditions listed in the attached certification as well as those listed below.
N~~o e~~Cazolina
Transportation Permitting Unit ~/Vl1~1lCQ~~Z,J
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] FAX [phone] Internet: http://h2o.enr.state.nc.us/ncwetlands
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W, Klimek, P.E. Director
Division of Water Quality
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WAT~ Michael F. Easley, Governor
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~C~ QG William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
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Uj ~ Alan W. Klimek, P.E. Director
~ Division of Water Quality
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Conditions of Certification:
1. Placement of culverts and other structures in waters, streams, and wetlands shall be placed below the elevation of
the streambed by one foot for all culverts with a diameter greater than 48 inches, and 20 percent of the culvert
diameter for culverts having a diameter less than 48 inches, to allow low flow passage of water and aquatic life.
Design and placement of culverts and other structures including temporary erosion control measures shall not be
conducted in a manner that may result in dis-equilibrium of wetlands or streambeds or banks, adjacent to or
upstream and down stream of the above structures. The applicant is required to provide evidence that the
equilibrium is being maintained if requested in writing by DWQ. If this condition is unable to be met due to
bedrock or other limiting features encountered during construction, please contact the NC DWQ for guidance on
how to proceed and to determine whether or not a permit modification will be required.
2. If concrete is used during construction, a dry work area should be maintained to prevent direct contact between
curing concrete and stream water. Water that inadvertently contacts uncured concrete should not be discharged to
surface waters due to the potential for elevated pH and possible aquatic life and fish kills.
3. During the construction of the project, no staging of equipment of any kind is permitted in waters of the U.S., or
protected riparian buffers.
4. The dimension, pattern and profile of the stream above and below the crossing should not be modified.
Disturbed floodplains and streams should be restored to natural geomorphic conditions.
5. The use of rip-rap above the Normal High Water Mark shall be minimized. Any rip-rap placed for stream
stabilization shall be placed in stream channels in such a manner that it does not impede aquatic life passage.
6. All work in or adjacent to stream waters shall be conducted in a dry work area. Approved BMP measures from
the most current version of NCDOT Construction and Maintenance Activities manual such as sandbags, rock berms,
cofferdams and other diversion structures shall be used to prevent excavation in flowing water.
7. Heavy equipment shall be operated from the banks rather than in the stream channel in order to minimize
sedimentation and reduce the introduction of other pollutants into the stream.
8. All mechanized equipment operated near surface waters must be regularly inspected and maintained to prevent
contamination of stream waters from fuels, lubricants, hydraulic fluids, or other toxic materials.
9. No rock, sand or other materials shall be dredged from the stream channel except where authorized by this
certification.
10. Discharging hydroseed mixtures and washing out hydroseeders and other equipment in or adjacent to surface
waters is prohibited.
11. The permittee and its authorized agents shall conduct its activities in a manner consistent with State water
quality standards (including any requirements resulting from compliance with §303(d) of the Clean Water Act) and
any other appropriate requirements of State and Federal law. If DWQ determines that such standards or laws are not
being met (including the failure to sustain a designated or achieved use) or that State or federal law is being violated,
or that further conditions are necessary to assure compliance, DWQ may reevaluate and modify this certification.
12. All fill slopes located in jurisdictional wetlands shall be placed at slopes no flatter than 3:1, unless otherwise
authorized by this certification..
N~o e~Carolina
Transportation Permitting Unit ° "'tuCQ~~I/
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] FAX [phone]ntemet: http•llh2o enr state.nc.us/ncwetlands
An Equal OpportunitylAffirmative Action Employer - 50% Recycled110% Post Consumer Paper

' Michael F. Easley, Governor
William G. Ross Jr., Secretary
rolina Depa~ment of Environment and NaturaP Ee Director
OF W ATtrq North Ca Alan W • Klimek,
Q Division of Water Quality
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p rr~~ In addition, the
ction site at all times. ineer
`gip' ~~ •~ osted on the constru intained with the Division Eng
uality Certificau nt m d fications, if any, shall be ma
13. A copy of this W ater Q
uality Certification and all subseq ction corridor appTOVed by this
W ater Q ro ect rnanager. Impacts to
and the on-site p J located within the cons and disturbing acrivlries.
wetland or water bound Vryible fencing prior to any
hi hly this certification.
l4 The outside buffer,
authorization shall be clearly marked by g the enclosed
e fencing are prohibited unless otherwise authorized shall complete and return
areas within th Division Engineer the 401 Certification has been
letion of the project, the NCDOT
etion Form to notify DWQ when all work included m
15. Upon comp ~~
ro ect by the end of the
"Certification of Compl
be reestablished within the construction limits of the p J s
completed.
arian vegetation must ction.
16. Native rip completion of constru
in season following into, jurisdictional wetlandsWetlands or str amsa wrt t 1
grow g
or waste disposa ction acrivities.
modification. Should waste or borrow act f omooad constru
I"1, There shall be ro riate ation from, overning
permit without app p uired since that is a direct imp ecifications g
compensatory rrutlgation will be req
Nance with all sanagement Practices in
sediment control practices must be in full comp •
.. Sion and d o eration and maintenance of such Best 1vI and
Ig, Ero n installation an p o erated,
the proper desig , ned, installed, p
._, order to protect surface waters standards: asures for the protect must be desig
control me 'on of the North Carolina Sediment and Erosion
a. The erosion an accordance with the most recent versa
nance of the sediment and erosion control measures
maintained in Design Manual. a most recent version of th 1
o eration, and mamte ecified in th intained on a
Control Planning an the requirements sp
installation,e ual, or exceed, The devices shall be ma ed or leased
b. The design, including contractor-own
Sediment and Erosion Control Manual.
must be such that they q e ale. (spoil) protects, erated,
North Carolina borrow sites, and writ p ned, installed, op
construction sites, ro ect. ace Mining
the erosion and sediment control measures must be esig
borrow pits associated with the p J
cent version of the North Carolina Surf •th
it sites, with the most re accordance ~'1
c, For bon t lased in accordance the reclamation in
and ma ust comply `""~
Manual. lementation m
The reclamation measures and ~p roved by
d• ents of the Sedimentation Pollution Control Act' aters unless otherwise app
the requirem wetlands or w avoidable, they
laced in wetlands and waters is un
invent and erosion control measures shall not be p ri
diment and erosion controonevices in
of the project.
l9. Sed If lacement of on comple unless
this Certificarion. d the natural grade restored up
shall be removed an sheetflow thr°ugh stream buffers at nonerosive velocities,
water runoff shall be directed as activities shall be restored to the
20, All stormroved by this certification. woody
otherwise app orary fill or clearing revegetated with non-
the lacement of temp nently u ose of this condition,
arian buffers impacted by p ction. For the p rp , ular DOT
2], All rip ated. Maintained buff ,et onlobconstru or that X11 be subJect to reg etated,
season following comp nently reveg
preconstruction contours arowingg ortation comd
species by the end of the g intained buffers shall be pec~
fer areas are defined as areaThe a eaMeth non-~ completion of constru
maintained buf mowing TOwing season following
NQ~
maintenance activity ec es before the next g r//VV
with native woody p A
ortation Permitting Unit
TransP~^a carvice Center, Raleigh, North Carolina 27699-1650
. _ ...,, o~minn. North Carolina 27604„r Gtate,nc.uslnc

O~ W A T~~ Michael F. Easley, Governor
William G. Ross Jr., Secretary
_~~ QG North Carolina Department of Environment and Natural Resources
Uj ~ Alan W. Klimek, P.E. Director
/~^, ~ Division of Water Quality
Y ~~L', ~,., yc L.
22. Pursuant to NCACISA 2B .0233(6), sediment and erosion control devices shall not be placed in Zone 1 of any
Neuse Buffer without prior approval by the NCDWQ. At this time, the NCDWQ has approved no sediment and
erosion control devices in Zone 1, outside of the approved project impacts, anywhere on this project. Moreover,
sediment and erosion control devices shall be allowed in Zone 2 of the buffers provided that Zone 1 is not
compromised and that discharge is released as diffuse flow.
23. If multiple pipes or barrels are required, they should be designed to mimic natural stream cross section as
closely as possible including pipes or barrels at flood plain elevation and/or sills where appropriate. Widening the
stream channel should be avoided. Stream channel widening at the inlet or outlet end of structures typically
decreases water velocity causing sediment deposition that requires increased maintenance and disrupts aquatic life
passage.
24. Riprap should not be placed in the active thalweg channel or placed in the streambed in a manner that precludes
aquatic life passage. Bioengineering boulders or structures should be properly designed, sized and installed.
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 that conforms
to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service
Center, Raleigh, N.C. 27699. 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 contact Rob Ridings at [phone].
inc rely,
Alan W. Klimek, P.E?~ i~~`4
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Attachments (General Certification and Certificate of Completion form)
cc: Chris Murray, Division 5 Environmental Officer
Deanna Riffey, NCDOT PEDEA
Eric Alsmeyer, US Army Corps of Engineers, Raleigh Field Office
DWQ Raleigh Regional Office copy
File Copy
No°e Cazolina
Transportation Permitting Unit ~Q~uralllJ
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] FAX [phone] /Internet: http~//h2o enr.state.nc.us/ncwetlands
An Equal OpportunitylAffirmative Action Employer- 50% Recycled110% Post Consumer Paper