20221103 Ver 1_ePCN Application_20220817

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Pre-Construction Notification (PCN) Form
For Nationwide Permits and Regional General Permits
(along with corresponding Water Quality Certifications)
April 13,2022 Ver 4.3
Initial Review
Has this project met the requirements for acceptance in to the review process?*
Yes
No
Is this project a public transportation project?"
Yes No
Change only if needed.
Pre-Filing Meeting Date Request was submitted on:
7/14/2022
BIMS#Assigned" Version#"
20221103 1
Is a payment required for this project?*
No payment required
Fee received Reviewing Office"
Fee needed-send electronic notification Washington Regional Office-[phone]
Select Project Reviewer"
Garcy Ward:eads\gpward
Information for Initial Review
1a.Name of project:
Martijn Bridge 34 Scour Repair
1a.Who is the Primary Contact?"
Steve Trowell
1 b.Primary Contact Email:" 1c.Primary Contact Phone:*
[e-mail] [phone]
Date Submitted
8/17/2022
Nearest Body of Water
Conoho Creek
Basin
Roanoke
Water Classification
Class C
Site Coordinates
Latitude: Longitude:
35.909825' -77.206709°
A. Processing Information
County(or Counties)where the project is located:
Martin
Is this a NCDMS Project
Yes No
Is this project a public transportation project?*
Yes No
Is this a NCDOT Project?"
Yes No

(NCDOT only)T.I.P.or state project number:
WBS#(1(
1B.105811
1a.Type(s)of approval sought from the Corps:
Section 404 Permit(wetlands,streams and waters,Clean Water Act)
Section 10 Permit(navigable waters,tidal waters,Rivers and Harbors Act)
Has this PCN previously been submitted?"
Yes
No
1 b.What type(s)of permit(s)do you wish to seek authorization?
Nationwide Permit(N W P)
Regional General Permit(RGP)
Standard(IP)
1c.Has the NWP or GP number been verified by the Corps?
Yes No
Regional General Permit(RGP)Number: 201902350-Work associated with bridge construction,widening,replacement,and
interchanges
RGP Numbers(for multiple RGPS):
1d.Type(s)of approval sought from the DWR:
401 Water Quality Certification-Regular 401 Water Quality Certification-Express
Non-404 Jurisdictional General Permit Riparian Buffer Authorization
Individual 401 Water Quality Certification
le.Is this notification solely for the record because written approval is not required?
For the record only for DWR 401 Certification: Yes No
For the record only for Corps Permit: Yes No
1f.Is this an after-the-fact permit application?*
Yes No
1g.Is payment into a mitigation bank or in-lieu fee program proposed for mitigation of impacts?
Yes No
1g.Is payment into a mitigation bank or in-lieu fee program proposed for mitigation of impacts?
Yes No
1 h.Is the project located in any of NC's twenty coastal counties?
Yes No
1j.Is the project located in a designated trout watershed?
Yes No
B. Applicant Information
1d.Who is applying for the permit?
Owner Applicant(other than owner)
le.Is there an Agent/Consultant for this project?"
Yes No
2.Owner Information
2a.Name(s)on recorded deed:
N/A
2b.Deed book and page no.:
N/A
2c.Contact Person:
Steve Trowell

2d.Addre55
Street Address
113 Airport Drive Suite 100
Address Line 2
City State/Province/Region
Edenton North Carolina
Postal/Zip Code Country
27932 US
2e.Telephone Number: 2f.Fax Number:
[phone]
2g.Email Address:*
[e-mail]
C. Project Information and Prior Project History
1.Project Information
1b.Subdivision name:
(if appropriate)
N/A
1c.Nearest municipality/town:
Town of Hamilton
2.Project Identification
2a.Property Identification Number: 2b.Property size:
N/A N/A
2c.Project Address
Street Address
N/A
Address Line 2
City State/Province/Region
Postal/Zip Code Country
3. Surface Waters
3a.Name of the nearest body of water to proposed project:
Conoho Creek
3b.Water Resources Classification of nearest receiving water:*
Class C
3c. What river basin(s)is your project located in?*
Roanoke
3d.Please provide the 12-digit HUC in which the project is located.
030101070508
4. Project Description and History
4a.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 existing Bridge 34 in Martin County was built in 1955 and conveys traffic traveling NC 125/903 over Conoho Creek off the Roanoke River.Bridge 34 is a three span,33'wide x 141'
long steel girder bridge with 2-interior bents.The interior bents are supported by a 6.5'wide x 23'long x 2.5'thick reinforced concrete pile cap on timber foundation piles.The end bents are
armored with concrete slope protection.An underwater bridge inspection conducted on January 26,2021 indicated significant scour persists undermining the existing slope protection
causing it to break apart on the northeast corner of the bridge and crack in other places.The worst of the stream bed scour has or is occurring on the north side of the bridge(adjacent
Bent 2)as if the stream channel is aligning with that side of the creek.Bridge maintenance staff familiar with past conditions of the site indicate that the creek shoreline has eroded
landward back to the concrete slope protection on both sides of the bridge.The vertical scour against the toe of the slope protection varies from 0.5'to 4.0'and averages 2.5'and 0.9'
around the northern end bent and southern end bent,respectively.The horizontal scour under the concrete slope protection averages around 4'on each side of the bridge.The vertical
scour under the reinforced concrete foundation supporting the interior bents averages 1.4'below the bottom of the foundation on Bent 1 and Ton Bent 2.
4b.Have Corps permits or DWR certifications been obtained for this project(including all prior phases)in the past?
Yes No Unknown
4f.List the total estimated acreage of all existing wetlands on the property:
0.50
4g.List the total estimated linear feet of all existing streams on the property:
240'
4h.Explain the purpose of the proposed project:
The primary purpose of this project is to abate structural deficiencies with the bridge resulting from scour of the stream bed around both interior and end bents.The latest Structural Safety
Report generated from the January 26,2021 underwater inspection resulted in the issuance of a"Priority Action Request"(PAR)by the Division of Highways Structural Management Unit.

41.Describe the overall project in detail,including indirect impacts and the type of equipment to be used:*
Bridge maintenance staff proposes to address repair of the concrete slope protection,with the exception of the northeast corner where the slope protection has completely failed,by
attaching two layers of geotextile fabric to the top of the slope protection.The fabric will follow the slope protection to the toe of the slope.Bridge Maintenance will then install 2'x4'
sandbags at the toe of the slope protection on top of the fabric to keep the fabric in place,and to fill the voids under/around the toe of the slope protection.The sand bag revetment will
have two layers of bags for a vertical height of 4'.The bags will be filled with sand verse small rock to ensure flexibility in the bags to assist in sealing up the vertical void between the
stream bed and concrete slope protection.Maintenance staff will install fabric and sandbags just along the slope protection.The sandbags will hold the fabric in place while maintenance
staff pumps grout to fill all the voids under the slope protection.The pumping of grout to fill the voids will be done in phases with the intent of reducing the hydraulic pressure of the grout
filling the void and to prevent the grout from leaking through any remaining cracks in the concrete slope protection.A 24 hour period between pumping events will be followed to allow the
grout to setup after each pumping event.The northeast corner of the slope protection has completely failed.the remaining broken concrete will be removed and replaced with Class B
granite riprap.
To address the scour around the two interior bents maintenance staff would like the place#5 stone around the interior piles where the scouring is taking place.Maintenance staff plan to fill
the scour hole with#5 clean stone back to stream bed elevation,and to the bottom edge of the reinforced concrete foundation.A steel hopper filled with the#5 stone will be lowered to a
floating work barge.The work barge will then be positioned under a chain hoist to facilitate picking up the steel hopper and maneuvering it into position as directed a diver monitoring the
filling progress.PVC poles will be used to demark the location of the concrete foundation and outer edge of the scour hole.A diver will be present to monitor the filling and direct the
placement of the stone.The#5 stone will then be capped with Class B to prevent the#5 stone from being washed/scoured back out of the scour hole.
5. Jurisdictional Determinations
5a.Have the wetlands or streams been delineated on the property or proposed impact areas?*
Yes No Unknown
Comments:
5b.If the Corps made a jurisdictional determination,what type of determination was made?*
Preliminary Approved Not Verified Unknown N/A
Corps AID Number:
5c.If 5a is yes,who delineated the jurisdictional areas?
Name(if known):
Agency/Consultant Company:
Other:
6. Future Project Plans
6a.Is this a phased project?*
Yes No
Are any other NWP(s),regional general permit(s),or individual permits(s)used,or intended to be used,to authorize any part of the proposed project or related activity?
D. Proposed Impacts Inventory
1. Impacts Summary
1a.Where are the impacts associated with your project?(check all that apply):
Wetlands Streams-tributaries Buffers
Open Waters Pond Construction
4. Open Water Impacts
4a. Site# 4a1.Impact Reason 4b.Impact type 4c.Name of waterbody 4d.Activity type :114e.Waterbod y type 4f.Impact area
Site 1 Sandbag Revetment P Conoho Creek Fill Tributary 0.03
and stone
4g.Total temporary open water Impacts: 4g.Total permanent open water impacts:
0.00 0.03
4g.Total open water impacts:
0.03
4h.Comments:
E. Impact Justification and Mitigation
1.Avoidance and Minimization

1a.Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project:
Utilizing sandbags provides for a smaller footprint than a sloping granite revetment and also provide a tighter seal to prevent the discharge of grout into
the stream.The rock plating of the stream bed will be limited to areas of scour.
1 b.Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques:
The scour holes will be delineated with PVC poles and a diver will be used to assist in the fill levels in the scour holes.The pumping of grout into the
voids under the concrete slope protection will be done at a rates as low as possible.The grout pumping will be phased with 24 hours between pumping
events to allow the grout to setup.
2.Compensatory Mitigation for Impacts to Waters of the U.S.or Waters of the State
2a.Does the project require Compensatory Mitigation for impacts to Waters of the U.S.or Waters of the State?
Yes No
2b.If this project DOES NOT require Compensatory Mitigation,explain why:
Impacts from the proposed project do not reach regulatory thresholds tripping compensatory mitigation.
F. Stormwater Management and Diffuse Flow Plan (required by DWR)
1. Diffuse Flow Plan
la.Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules?
Yes No
If no,explain why:
The Roanoke River Basin does not have a NC Riparian Buffer Protection Rule.
2. Stormwater Management Plan
2a.Is this a NCDOT project subject to compliance with NCDOT's Individual NPDES permit NCS000250?
Yes No
2b.Does this project meet the requirements for low density projects as defined in 15A NCAC 02H.1003(2)?
Yes No
2c.Does this project have a stormwater management plan(SMP)reviewed and approved under a state stormwater program or state-approved local government stormwater program?
Yes No
N/A-project disturbs<1 acre
Comments:
G. Supplementary Information
1. Environmental Documentation
la.Does the project involve an expenditure of public(federal/state/local)funds or the use of public(federal/state)land?*
Yes No
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(North Carolina)
Environmental Policy Act(NEPA/SEPA)?*
Yes No
Comments:*
Project impacts below thresholds requiring preparation of a NEPA/SEPA document.
2.Violations (DWR Requirement)
2a.Is the site in violation of DWR Water Quality Certification Rules(15A NCAC 2H.0500),Isolated Wetland Rules(15A NCAC 2H.1300),or DWR Surface Water or Wetland Standards or
Riparian Buffer Rules(15A NCAC 2B.0200)?*
Yes No
3. Cumulative Impacts (DWR Requirement)
3a.Will this project result in additional development,which could impact nearby downstream water quality?
Yes No
3b.If you answered"no,"provide a short narrative description.
This maintenance/repair project of an existing bridge built in 1955.
4. Sewage Disposal (DWR Requirement)
4a.Is sewage disposal required by DWR for this project?*
Yes No N/A

5. Endangered Species and Designated Critical Habitat(Corps Requirement)
5a.Will this project occur in or near an area with federally protected species or habitat?*
Yes No
5b.Have you checked with the USFWS concerning Endangered Species Act impacts?*
Yes No
5d.Is another Federal agency involved?*
Yes No Unknown
5e.Is this a DOT project located within Division's 1-8?
• Yes No
5j.What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat?
USFWS website and NC Natural Heritage website
6. Essential Fish Habitat(Corps Requirement)
6a.Will this project occur in or near an area designated as an Essential Fish Habitat?
Yes No
6b.What data sources did you use to determine whether your site would impact an Essential Fish Habitat?
NMFS Habitat EFH Mapper website
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 status?*
Yes No
7b.What data sources did you use to determine whether your site would impact historic or archeological resources?*
NC SHPO
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:
8c.What source(s)did you use to make the floodplain determination?*
FEMA website
Miscellaneous
Please use the space below to attach all required documentation or any additional information you feel is helpful for application review.Documents should be combined into one file when
possible,with a Cover Letter,Table of Contents,and a Cover Sheet for each Section preferred.
Click the upload button or drag and drop files here to attach document
File must be PDF or KMZ
Comments
Signature -
*
By checking the box and signing below,I certify that:
• The project proponent hereby certifies that all information contained herein is true,accurate,and complete to the best of my knowledge and belief';and
• The project proponent hereby requests that the certifying authority review and take action on this CWA 401 certification request within the applicable reasonable period of time.
• I have given true,accurate,and complete information on this form;
• I agree that submission of this PCN form is a"transaction"subject to Chapter 66,Article 40 of the NC General Statutes(the"Uniform Electronic Transactions Act");
• I agree to conduct this transaction by electronic means pursuant to Chapter 66,Article 40 of the NC General Statutes(the"Uniform Electronic Transactions Act");
• I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written signature;AND
• I intend to electronically sign and submit the PCN form.
Full Name:
Steve John Trowell
Signature
Date
8/17/2022