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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTA IZ
E3EV1 RLY EAVESPCRDUI f A CONT1 .IR
GOVT RNOR RLTARY
April 16 2012
Attention Bill Biddlecome C
U S Ai my Corps of Engineer s r I 02 J
Regulatory field Office l
Post Office Box 1000
Washington N C 27889 1000
Dear Mr Biddlecome
The North Carolina Department of Transportation is requesting a GP 31 permit for an Emergency
Bridge support project on the Hebert C Bonner Bridge The proposed work will occur on bridge # I 1
which is located over Oregon Inlet along NC 12 in Dare County This project proposes to place gabion mats
and sand bags to prevent further scour along bridge pile support bents 158 — 162 on the south side of the
Inlet The project also proposes to install a steel pile crutch bent at bi edge bent # 159 During recent depth
soundings and bridge survey reviews it was discovered that bridge pilings at bent # 158 through bent # 162
are below the mmunum pile embedment depth This means that the bottom contour has eroded away to a
critical point around the pile structure This lack of ground support around the piles is very concerning to
bi idge structural engineers and warrants immediate action In order to reduce further scour and loss of
structural integrity NCDOT is proposing an arrangement of gabion mats and sandbag placement around the
piles andin between the bent structures The structure arrangement and detail is provided in the attached
permit drawings The gabion mats and sandbags will be placed by a barge /tug and diving operation The
scour pratection will be placed on the bottom and tied together to create a continuous mat The total
tootprinton the bottom will be 7 400 square feet from the gabion mats and 4 800 sq feet from the
sandbags After the gabion mat and sandbag placement is complete a predicted minimum depth will be
approxmately 30 feet from Mean Low Tide Bent # 159 has some additional scour concern and a steel pile
crutch bent is being proposed at this location The crutch bent will have a total of 8 24 inch hollow steel
piles driven directly adjacent to the existing bent It is not anticipated that pile jetting will be needed
howeverthe contractor will have the option available Once the piles are in place a new bridge support cap
will thenbe formed around the existing concrete footing and poured with concrete The newly poured
footing well be meshed to the existing footing by exposing and attaching rebar supports The concrete
forming will likely take place from a hanging structure and poured from a lane closure on the bridge deck
The barge and tug operation will utilize an old existing emergency ferry landing on the south side
of Oregon Inlet This landing has been used in the past and provides efficient barge access The preexisting
road«,aythat leads to the old ramp will need to be temporarily rebuilt and extended approximately 70 feet
to accoruniodate barge access This will be done by the placement of 155 feet of suitable roadway fill
matei ial and gravel with the remaining 70 feet extension of 4 X 4 feet sandbags layered with a rubber mat
and wooden palate riding surface This will result in a temporary impact of 0 045 acres of open water Once
the project is complete the roadway /ramp extension will be entirely removed A permit detail illustration
depicts the proposed temporary roadway /ramp improvement
113 Airport Drive Suite 100 Edenton NC 27932 Phone (252) 482 7977 Fax (252) 482 8722
NCDOT is also requesting a modification to CAMA Major Permit # 128 04 which was originally
issued in 2004 for a very similar project on the Bonner Bridge at Bents 146 and 147 and again modified in
2011 to authorize the A jacks project within this area NCDOT is coordinating with the USFWS and NPS
on this project This will be done through a Special Use permit issued by the Manteo office
It is NCDOT s intent to have this contract available foi construction on June 19'h with a
completion date of October 26" Therefore a permit acquisition date of around May 22 d is our goal We
appreciate any efforts and coordination that can take place to help DOT meet these deadlines and respond
to this emergency maintenance repair
The PCN vicinity map photographs and permit drawings are included with this letter If you need
any additional information or have any questions concerning this project please call me at 252 482 7977
Cc Garcy Ward DWQ
Sonia Gregory DWQ
Gary Jordan USFWS
Ron Sechler NMF
Travis Wilson NCWRC
Kevin Hart NCDMF
Sincerely
Jeiry Jennings
Division Engineer Dn isiionn One
Clay Willis 412L d&--V
Division One Environmental Officer
Office Use Only
Corps action ID no
DWQ protect no
Form Version 1 3 Dec 10 2008
Page I of 12
PCN Form — Version 1 3 December 10 2008 Version
Pre - Construction Notification PCN Form
A Applicant Information
1
Processing
la
Type(s) of approval sought from the
Corps
®Section 404 Permit El Section 10 Permit
lb
Specify Nationwide Permit (NWP) number or General Permit (GP) number 31
1c
Has the NWP or GP number been verified by the Corps?
® Yes
❑ No
1 d
Type(s) of approval sought from the DWQ (check all that apply)
® 401 Water Quality Certification — Regular ❑ Non 404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization
1 e
Is this notification solely for the record
because written approval is not required?
For the record only for DWQ 401
Certification
❑ Yes ® No
For the record only for Corps Permit
❑ Yes ® No
1 f
Is payment into a mitigation bank or in lieu fee program proposed for mitigation
of impacts? If so attach the acceptance letter from mitigation bank or in lieu
fee program
❑ Yes
® No
1g
Is the project located in any of NC s twenty coastal counties If yes answer 1 h
below
® Yes
❑ No
1 h
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
® Yes
❑ No
2
Project Information
2a
Name of project
B 5014 B Bonner Bridge Emergency Scour Repair (Bent 158
Bent 162)
2b
County
Dare County
2c
Nearest municipality / town
Nags Head
2d
Subdivision name
n/a
2e
NCDOT only T I P or state
project no
B 5014 B Emergency Scour Repair 2012
3
Owner Information
3a
Name(s) on Recorded Deed
NCDOT
3b
Deed Book and Page No
3c
Responsible Party (for LLC if
applicable)
NCDOT Division One
3d
Street address
NC 12 Bonner Bridge # 11
3e
City state zip
3f
Telephone no
252 482 7977
3g
Fax no
252 482 8722
3h
Email address
tcwillis @ncdot gov
Page I of 12
PCN Form — Version 1 3 December 10 2008 Version
4
Applicant Information (if different from owner)
4a
Applicant is
❑ Agent ❑ Other specify
4b
Name
NCDOT Division One
4c
Business name
(if applicable)
4d
Street address
113 Airport Drive
4e
City state zip
Edenton N C 27932
4f
Telephone no
252 482 7977
4g
Fax no
252 482 8722
4h
Email address
tcwillis @ncdot gov
5
Agent/Consultant Information (if applicable)
5a
Name
5b
Business name
(if applicable)
5c
Street address
5d
City state zip
5e
Telephone no
5f
Fax no
5g
Email address
Page 2 of 12
PCN Form — Version 1 3 December 10 2008 Version
B
Project Information and Prior Project History
1
Property Identification
1a
Property identification no (tax PIN or parcel ID)
1b
Site coordinates (in decimal degrees)
Latitude 35 7675 Longitude 755301
(DD DDDDDD) ( DD DDDDDD)
1 c
Property size
2 acres
2
Surface Waters
2a
Name of nearest body of water (stream river etc ) to
proposed project
Oregon Inlet Pamlico Sound
2b
Water Quality Classification of nearest receiving water
SA HQW
2c
River basin
Pasquotank
Page 3 of 12
PCN Form — Version 1 3 December 10 2008 Version
3
Project Description
3a
Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application
The project site s only structure consist of the Bonner Bridge which crosses Oregon Inlet and highway NC 12 On the
southside of the inlet there is a rock terminal groin that extends from the soundside to the ocean The bridge is bordered
on the north by the National Park Service Property (Bodie Island) and the south by the USFWS property (Pea Island)
General land use is in conservation and is used by fisherman beach tourist bird watchers and other water /outdoor
related recreational users
3b
List the total estimated acreage of all existing wetlands on the property
0 5 acres around the barge access point on Pea Island The work area around the bridge bents is within the inlet surface
waters
3c
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property
0
3d
Explain the purpose of the proposed project
Emergency response to prevent further scour at pile supports between bents 158 and 162 on the southend of Bonner
Bridge This will be done by attempting to lay gabion mats /sandbags around bridge piles and the installation of a steel pile
crutch bent around bent # 159
3e
Describe the overall project in detail including the type of equipment to be used
The project proposes to prevent further scour around bridge bent # 158 159 160 161 and 162 by placing sandbags
around the piles and gabion mats between the bent structures The sandbags will be 3X3X3 feet and filled from and
upland sand source They will be sealed prior to placement around the piles Each bent will receive approximately 133
bags resulting in a fill area of around 50X24 feet (1 200sq ft) The total for all four bents will be approximately 532 bags
resulting in 4 800 sq feet of coverage on the inlet floor In between the bents 4 gabion mats will be placed covering a
total area of 7400 sq feet The gabion mats will have two 9 layers at each site creating a combined total 18 thick mat
The sandbags and gabion mats will be assembled partially at the old coast guard road staging area and partially on the
barge platform A crane operation will be conducted from a floating barge and tug which will manuever into and lay the
structure on the inlet floor as depicted in the permit drawings In addition to the sandbag and gabion mats bridge bent #
159 will receive a steel pile crutch bent There will be 8 24 inch hollow piles driven adjacent to the existing bent It is not
anticipated that betting will be needed however NCDOT will provide the option if necessary to the contractor A new bent
will be formed and poured with concrete The existing footings rebar will be exposed and intertwined with the new footing
rebar to provide structural strength The new footing form and concrete pouring operation will likely take place from the
bridge deck utilizing scaffolding and a hanging form configuration
The barge loading site will be on the southside of the inlet at the Old Emergence Ferry Ramp which has been utilized in
past Bonner Bridge repair work This loading site will have to be temporarily improved to allow for a barge loading
operation The roadbed will be reestablished by placing fill for a distance of 155 to the Mean High Water Line (MHWL)
From the MHWL an additional 70 extention will consist of sandbag placement with a wood mat surface The final 70
sandbag extension will carry the loading ramp to a depth contour of 6 allowing for a barge loading operation to safely
take place The sandbag extension will involve placing 4 X4 sand bags as a base layered with a timber mat riding
surface The attached detail illustrates the improvement and replicates what DOT constructed in the 2011 Bonner Bridge
A hacks maintenance project Once the project is complete this temporary road and sandbag extension will be completely
removed There will be no wetland impacts associated with the proposed work Surface water impacts will result in
permanent impacts of 12 200 sq ft from the placement of gabion mats and sandbags on the inlet sea floor and 1 965 sq
ft of temporary impacts from the sandbag loading ramp extention The bags associated with the loading ramp extension
will be completely removed and the area restored to preprolect contours This project will require transport equipment/
trucks tugs barge and crane The staging site will be located within the old coast guard roadway (SR 1257)
Page 4 of 12
PCN Form — Version 1 3 December 10 2008 Version
5 Project History
5a Have permits or certifications been requested or obtained for
® Yes ❑ No ❑ Unknown
this project (including all prior phases) in the past?
5b If yes explain in detail according to help file instructions
Similar project occurred in 2004/2005 and was authorized under CAMA Mayor Permit 128 04 COE Permit GP 31
(200411695)and DWQ 401 (041486) 2011 A Jacks Project authorized CAMA Mayor Permit Minor Modification 128 04
COE Permit GP 31 (2011 00492) and DWQ 401 (20100256)
6 Future Project Plans
6a Is this a phased project?
❑ Yes ® No
6b If yes explain
Page 5 of 12
PCN Form — Version 1 3 December 10 2008 Version
C Proposed Impacts Inventory
1 Impacts Summary
la Which sections were completed below for your project (check all that apply)
❑ Wetlands ❑ Streams tributaries ❑ Buffers
® Open Waters ❑ Pond Construction
2 Wetland Impacts
If there are wetland impacts proposed on the site then complete this question for each wetland area impacted
2a
2b
2c
2d
2e
2f
Wetland impact
Type of Jurisdiction
number —
Type of impact
Type of wetland
Forested
(Corps 404 10
Area of impact
Permanent (P) or
(if known)
DWQ — non 404 other)
(acres)
Temporary T
❑ Yes
❑ Corps
W1 P ❑ T
❑
❑ No
❑ DWQ
❑ Yes
❑ Corps
W2 ❑ P ❑ T
❑ No
❑ DWQ
❑ Yes
❑ Corps
W3 ❑ P ❑ T
❑ No
❑ DWQ
❑ Yes
❑ Corps
W4 ❑ P ❑ T
❑ No
❑ DWQ
❑ Yes
❑ Corps
W5 ❑ P ❑ T
❑ No
❑ DWQ
❑ Yes
❑ Corps
W6 ❑ P ❑ T
❑ No
❑ DWQ
2g Total wetland impacts
2h Comments None
3 Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site then complete this
question for all stream sites impacted
3a
3b
3c
3d
3e
3f
3g
Stream impact
Type of impact
Stream name
Perennial
Type of Jurisdiction
Average
Impact
number -
(PER) or
(Corps 404 10
stream
length
Permanent (P) or
intermittent
DWQ — non 404
width
(linear
Temporary (T)
(INT)?
other)
(feet)
feet)
❑ PER
❑ Corps
S1 ❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑ Corps
S2 ❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑ Corps
S3 ❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑ Corps
S4 ❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑ Corps
S5 ❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑ Corps
S6 ❑ P ❑ T
❑ INT
❑ DWQ
3h Total stream and tributary impacts
31 Comments None
Page 6 of 12
PCN Form — Version 1 3 December 10 2008 Version
4 Open Water Impacts
If there are proposed impacts to lakes ponds estuaries tributaries sounds the Atlantic Ocean or any other open water of
the U S then individually list all open water impacts below
4a
Open water
impact number —
Permanent (P) or
Temporary T
4b
Name of waterbody
(if applicable)
4c
Type of impact
4d
Waterbody type
4e
Area of impact (acres)
01 ® P ❑ T
Oregon Inlet
Gabion Mats and Sandbags
warm
028
02 ❑ P ® T
Oregon Inlet
temporary loading ramp fill
warm
0 045
03 ❑P ❑T
04 ❑P ❑T
41' Total open water impacts
4g Comments Impacts will be below surface on Oregon Inlet bottom sandbags and gabion mats will prevent additional scour
around the structure
5 Pond or Lake Construction
If pond or lake construction proposed the complete the chart below
5a
Pond ID
number
5b
Proposed use or purpose
of pond
5c
Wetland Impacts (acres)
5d
Stream Impacts (feet)
5e
Upland
(acres)
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
51' Total
5g Comments None
5h Is a dam high hazard permit required
❑ Yes ❑ No If yes permit ID no
51 Expected pond surface area (acres)
5j Size of pond watershed (acres)
5k Method of construction
Page 7 of 12
PCN Form — Version 1 3 December 10 2008 Version
6 Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer then complete the chart below If yes then individually list all buffer impacts
below If any impacts require mitigation then you MUST fill out Section D of this form
6a
❑ Neuse [:1 Tar Pamlico El Other
Project is in which protected basin?
❑ Catawba ❑ Randleman
6b
6c
6d
6e
6f
6g
Buffer impact
number —
Reason
Buffer
Zone 1 impact
Zone 2 impact
Permanent (P) or
for
Stream name
mitigation
(square feet)
(square feet)
Temporary T
impact
required?
El Yes
B1 ❑P ❑T
❑ No
B2 ❑P ❑T
El Yes
❑ No
B3 ❑P ❑T
❑Yes
❑ No
6h Total buffer impacts
61 Comments None
D Impact Justification and Mitigation
1 Avoidance and Minimization
la Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
Coverage area of the proposed sandbags and gabion mats is minimal amount necessary to function as scour protection
around the specific bents that are experiencing increased erosive force
lb Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques
Operation will be conducted from a barge and loading dock which will have no impacts on wetlands All work will be
coordinated with the regulatory agencies and USFWS at Pea Island
2 Compensatory Mitigation for Impacts to Waters of the U S or Waters of the State
2a Does the project require Compensatory Mitigation for
❑ Yes ® No
impacts to Waters of the U S or Waters of the State?
2b If yes mitigation is required by (check all that apply)
❑ DWQ ❑ Corps
❑ Mitigation bank
2c If yes which mitigation option will be used for this
❑ Payment to in lieu fee program
project?
❑ Permittee Responsible Mitigation
3 Complete if Using a Mitigation Bank
3a Name of Mitigation Bank
3b Credits Purchased (attach receipt and letter)
Type
Quantity
Page 8 of 12
PCN Form — Version 1 3 December 10 2008 Version
E
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1
Diffuse Flow Plan
1a
Does the project include or is it adjacent to protected riparian buffers identified
❑ Yes ® No
within one of the NC Riparian Buffer Protection Rules?
1 b
If yes then is a diffuse flow plan included? If no explain why
❑ Yes ❑ No
Comments
2
Stormwater Management Plan
2a
What is the overal I percent imperviousness of this project?
0%
2b
Does this project require a Stormwater Management Plan?
® Yes ❑ No
2c
If this project DOES NOT require a Stormwater Management Plan explain why
2d
If this project DOES require a Stormwater Management Plan then provide a brief narrative description of the plan
The project will follow NCDOT best management practices for soil and erosion control
The only ground disturbance
assoicated with this project will be assoicated with the barge loading ramp The contractor will be reminded to inspect
and maintain hydraulically operated equipment for leaks and keep oils fuels contained on the barge and tug operation
❑ Certified Local Government
2e
Who will be responsible for the review of the Stormwater Management Plan?
❑ DWQ Stormwater Program
® DWQ 401 Unit
3
Certified Local Government Stormwater Review
3a
In which local government s jurisdiction is this project?
n/a
❑ Phase II
❑ NSW
3b
Which of the following locally implemented stormwater management programs
❑ USMP
apply (check all that apply)
❑ Water Supply Watershed
❑ Other
3c
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
4
DWQ Stormwater Program Review
❑ Coastal counties
❑ HQW
4a
Which of the following state implemented stormwater management programs apply
❑ ORW
(check all that apply)
❑ Session Law 2006 246
❑ Other
4b
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes El No
attached?
5
DWQ 401 Unit Stormwater Review
5a
Does the Stormwater Management Plan meet the appropriate requirements?
❑ Yes ❑ No
5b
Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 10 of 12
PCN Form — Version 1 3 December 10 2008 Version
F
Supplementary Information
1
Environmental Documentation (DWQ Requirement)
la
Does the project involve an expenditure of public (federal /state /local) funds or the
® Yes
❑ No
use of public (federal /state) land?
1 b
If you answered yes to the above does the project require preparation of an
environmental document pursuant to the requirements of the National or State
® Yes
❑ No
(North Carolina) Environmental Policy Act (NEPA /SEPA)?
1c
If you answered yes to the above has the document review been finalized by the
State Clearing House? (If so attach a copy of the NEPA or SEPA final approval
❑ Yes
® No
letter )
Comments Project covered under a Type II B Categorical Exclusion
2
Violations (DWQ Requirement)
2a
Is the site in violation of DWQ Wetland Rules (15A NCAC 2H 0500) Isolated
Wetland Rules (15A NCAC 2H 1300) DWQ Surface Water or Wetland Standards
❑ Yes
® No
or Riparian Buffer Rules (15A NCAC 2B 0200)?
2b
Is this an after the fact permit application?
❑ Yes
® No
2c
If you answered yes to one or both of the above questions provide an explanation of the violation(s)
3
Cumulative Impacts (DWQ Requirement)
3a
Will this project (based on past and reasonably anticipated future impacts) result in
❑ Yes
® No
additional development which could impact nearby downstream water quality?
3b
If you answered yes to the above submit a qualitative or quantitative cumulative impact analysis in accordance
with the
most recent DWQ policy If you answered no provide a short narrative description
4
Sewage Disposal (DWQ Requirement)
4a
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
No discharge will result from this project
Page 11 of 12
PCN Form — Version 1 3 December 10 2008 Version
5 0
5
Endangered Species and Designated Critical Habitat (Corps Requirement)
5a
Will this project occur in or near an area with federally protected species or
® Yes ❑ No
habitat?
5b
Have you checked with the USFWS concerning Endangered Species Act
® Yes ❑ No
impacts?
® Raleigh
5c
If yes indicate the USFWS Field Office you have contacted
❑ Asheville
5d
What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
Natural Heritage Data base USFWS Threatened & Endangered Species Data Base
Oregon Inlet is part of estuary system that is considered suitable habitat for sea turtles and manatees no effect will occur
as a result of this emergency repair project All work is being coordinated with the Pea Island Refuge management
6
Essential Fish Habitat (Corps Requirement)
6a
Will this project occur in or near an area designated as essential fish habitat?
® Yes ❑ No
6b
What data sources did you use to determine whether your site would impact Essential Fish Habitat?
National Marine Fisheries EFH data base list Oregon Inlet as EFH for certain juvenial and adult species of fish
7
Historic or Prehistoric Cultural Resources (Corps Requirement)
7a
Will this project occur in or near an area that the state federal or tribal
governments have designated as having historic or cultural preservation
® Yes ❑ No
status (e g National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b
What data sources did you use to determine whether your site would impact historic or archeological resources
State Historic Preservation Office There is no proposed impact to Pea Island or the Cape Hatteras National Sea Shore
8
Flood Zone Designation (Corps Requirement)
8a
Will this project occur in a FEMA designated 100 year floodplain?
® Yes ❑ No
8b
If yes explain how project meets FEMA requirements Project will not effect flood plain elevations
8c
What source(s) did you use to make the floodplain determination? FEMA Maps
Clay Willis
CX �
/ CZ
Applicant/Agent s Printed Name
Date
Ap ant/Agent s Signature
(Agents signature is v only if an authorization letter from the applicant
is provided
Page 12 of 12
PCN Form — Version 1 3 December 10 2008 Version
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