20120462 Ver 1_401 Application_20120512 (2)

Strickland, Bev
From: Dennison, Laurie
Sent: Thursday, May 10, 2012 12:34 PM
To: Strickland, Bev
Subject: FW: Masonboro Inlet jetty repairs (UNCLASSIFIED)
Attachments: PCN for South Jetty Repair- Masonboro Inlet April 2012.doc; Figure 1 location map.pdf;
Masonboro So Jetty Repair Plan View Figure 2 from Bill Dennis April 2.pdf
I've printed & set up the PCN in BIMS DWQ 12 -0462; could you drag in the map & plan view when you scan it in?
Thanks, Laurie
- - - -- Original Message---- -
From: Coburn, Chad
Sent: Thursday, May 10, 2012 11:45 AM
To: Dennison, Laurie; Mcmillan, Ian
Subject: FW: Masonboro Inlet jetty repairs (UNCLASSIFIED)
- - - -- Original Message---- -
From: Richter, Jeffrey H SAW [mailto: Jeffrey .H.Richter(c�usace.army.mil]
Sent: Thursday, April 12, 2012 3:03 PM
To: Coburn, Chad
Cc: Mallindine, Jessica D SAW
Subject: Masonboro Inlet jetty repairs (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Hi Chad, I got your message re: you're thinking about whether this needs written permission or would be considered like the
landward repairs done last year. I've attached a copy of the draft PCN and figures in case that will help. I just got something
from NCDCM stating that they've put the consistency determination we prepared out for State agency review.
Be glad to discuss with you and Ian if that'll help. I'd offer to take you out there .... but there's really nothing to see except rocks
and water!
Thanks,
Jeff Richter
Environmental Resources Section
Wilmington Dist. Corps of Engineers
69 Darlington Avenue
Wilmington, NC 28403
910 - 251 -4636
Classification: UNCLASSIFIED
Caveats: NONE

o�OF W ATFRQG
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Page 1 of 13
PCN Form — Version 1.3 December 10, 2008 Version
Pre - Construction Notification PCN Form
A. Applicant Information
1.
Processing
1 a.
Type(s) of approval sought from the
Corps:
®Section 404 Permit El Section 10 Permit
1 b.
Specify Nationwide Permit (NWP) number: 3 or General Permit (GP) number:
1 c.
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
1f.
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
1 g.
Is the project located in any of NC's twenty coastal counties. If yes, answer 1 In
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:
South jetty repair at Masonboro Inlet
2b.
County:
New Hanover County
2c.
Nearest municipality / town:
Wrightsville Beach
2d.
Subdivision name:
NA
2e.
NCDOT only, T.I.P. or state
project no:
NA
3.
Owner Information
3a.
Name(s) on Recorded Deed:
U.S. Government
3b.
Deed Book and Page No.
3c.
Responsible Party (for LLC if
applicable):
3d.
Street address:
3e.
City, state, zip:
3f.
Telephone no.:
3g.
Fax no.:
3h.
Email address:
Page 1 of 13
PCN Form — Version 1.3 December 10, 2008 Version

4.
Applicant Information (if different from owner)
4a.
Applicant is:
❑ Agent ® Other, specify: Federal Government
4b.
Name:
4c.
Business name
(if applicable):
U.S. Army Corps of Engineers, Wilmington District
4d.
Street address:
69 Darlington Avenue
4e.
City, state, zip:
Wilmington, NC 28401
4f.
Telephone no.:
910 - 251 -4636
4g.
Fax no.:
910- 251 -4744
4h.
Email address:
jeffrey.h.richter @usace.army.mil
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 13
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):
6800 - 001 - 001 -002
1 b.
Site coordinates (in decimal degrees):
Latitude: 34.17885 Longitude: - 77.808795
(DD.DDDDDD) (- DD.DDDDDD)
1 c.
Property size:
12.2 acres
2.
Surface Waters
2a.
Name of nearest body of water (stream, river, etc.) to
proposed project:
Masonboro Inlet and Atlantic Ocean
2b.
Water Quality Classification of nearest receiving water:
SA ORW
2 F c.
River basin:
Cape Fear River Basin
Page 3 of 13
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:
Masonboro Inlet is located between the southern tip of Wrightsville Beach, NC and the northern tip of Masonboro Island.
The inlet is part of a Federal navigation project which provides for a 400 -ft wide by 14 -ft deep channel through the ocean
bar to a 90 -ft wide by 12 -ft deep channel connecting to the Atlantic Intracoastal Waterway via Banks and Motts channels.
The project also provides for a jetty on either side of the inlet. The north jetty was completed in 1966 and the south jetty
in 1980. The north jetty is 3,650 ft in length, including a 1,000 ft long low crested weir section. The weir permits sediment
to pass over the structure, depositing into the inlet complex where it is available for sand bypassing (and back passing) to
the adjacent beaches. The south jetty is 3,450 -ft long, with the first 970 ft consisting of a shore anchorage section which
provides the land tie -in of the structure.
Shortly after the south jetty was completed, the inlet was dredged, establishing a centrally located navigation channel
between the two structures. Since the channel was established in 1980, the channel has moved southward. As a
consequence of this shift in the channel, the inlet side foundation has been undermined to the point where armor stone
has fallen exposing the concrete sheet -pile core in some areas. This exposure causes these areas of the structure to be
more inherently unstable and more vulnerable to wave attack. It is likely that the inlet side erosion will continue, further
worsening the stability of the concrete sheet pile wall.
3b.
List the total estimated acreage of all existing wetlands on the property:
No vegetated wetlands on existing property.
3c.
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
N/A
3d.
Explain the purpose of the proposed project:
The proposed repair /rehabilitation to an area of the existing south jetty, where erosion has made the structure unstable
and prone to collapse, will restore safe navigation conditions through the inlet.
Page 4 of 13
PCN Form — Version 1.3 December 10, 2008 Version

3e.
Describe the overall project in detail, including the type of equipment to be used:
The repair is proposed to be conducted as a one -time event to ensure the jetty's integrity and reduce the risk of structural
failure. The armor stone to be used for this project will either be stockpiled on Masonboro Island, the south end of
Wrightsville Beach, or left on barges (acquisiton of stockpile and staging areas will be the responsibilty of the contractor).
The stones will be unloaded from barges using a barge mounted crane and placed directly onto the design template. It is
proposed that the barges work mostly from the protected waters on the north side of the south jetty and within the inlet.
According to the latest hydrographic survey, water depths are adequate so all work will be completed from shallow -draft
barges and no work will occur on Masonboro Island proper. In the event shoals develop along the repair areas, the
Corps will coordinate with Ms. Hope Sutton, Southern Sites Manager for the NC Coastal Reserve & National Estuarine
Research Reserve and require that all work be conducted in accordance with her recommendations and requirements.
The proposed repairs will involve three areas on the south jetty: the inlet side of the Intermediate Trunk near the elbow,
the inlet side of the Main Trunk, and both the inlet and seaward side at the Jetty Head.
Along the inlet side of the Intermediate Trunk, repair of the jetty is required for approximately 450 feet, where scour
channels have undermined the toe protection causing the toe and armor stone to subside exposing parts of the concrete
sheetpile wall. The armor stone and foundation materials have predominantly subsided vertically and horizontal
displacement has appeared to have been minimal. An additional layer of 5 to 8 ton armor stone (approximately 990 tons)
is proposed to protect the concrete sheetpile wall, extending approxiamately 40 feet from the sheetpile wall. The
additional armor stone proposed will be founded on subsided armor stone and therefore no additional bedding stone is
required.
On the inlet side of the Main Trunk of the jetty, currents and wave action have eroded the underlying sand and the armor
stone has subsided exposing the concrete sheetpile wall. One 300 foot section of the wall is fully visible. Analysis of the
existing jetty cross - sections show that repair is needed along the Main Trunk for approximatly 800 feet. The
recommended repair consists of adding a second layer of armor stone extending approximately 40 feet from the
centerline of the structure on the inlet side and about 10 feet from the centerline on the ocean side. The armor stone
would be 14 -22 ton, the same size as the original design, and require about 9,940 tons for the repair.
The Jetty Head also requires additional armor stone due to erosion of the underlying sand. To bring the Jetty Head back
to design elevation, approximately 6,280 tons of 14 to 22 ton armor stone are required from the end of the Main Trunk
through the end of the head, a distance of approximately 400 feet. The stone would be placed on both the inlet and ocean
side about 65 feet out from the centerline.
Total impacts of the three construction areas will be approx 2.3 acres (total length of construction multiplied by 40 to 65
feet into the water). The majority of this area will involve the placement of new stone placed atop existing submerged
stone. As much as practicable, these impacts will be within the footprint of the original design of the jetty.
4.
Jurisdictional Determinations
4a.
Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
El Yes ®No El Unknown
project (including all prior phases) in the past?
Comments:
4b.
If the Corps made the jurisdictional determination, what type
El Preliminary El Final
of determination was made?
4c.
If yes, who delineated the jurisdictional areas?
Agency /Consultant Company:
Name (if known):
Other:
4d.
If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
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.
USACE project constructed in 1980 required EA to complete. Similar repairs made on landward end of jetty in 2010.
Page 5 of 13
PCN Form — Version 1.3 December 10, 2008 Version

6. Future Project Plans
6a. Is this a phased project? ❑ Yes ® No
6b. If yes, explain.
Page 6 of 13
PCN Form — Version 1.3 December 10, 2008 Version

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. 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)
W1 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W2 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W3 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W4 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W5 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W6 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
2g. Total wetland impacts
0
2h. Comments:
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)
S1 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S2 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S3 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S4 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S5 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S6 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
3h. Total stream and tributary impacts
0
3i. Comments:
Page 7 of 13
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.
4b.
4c.
4d.
4e.
Open water
Name of waterbody
impact number —
(if applicable)
Type of impact
Waterbody type
Area of impact (acres)
Permanent (P) or
Temporary (T)
Rock placement along South
01 ®P ❑ T
Atlantic
Jetty at Masonboro Inlet.
Ocean
0.4
Intermediate Trunk
Rock placement along South
02 ® P ❑ T
Atlantic
Jetty at Masonboro Inlet.
Ocean
0.7
Main Trunk
Rock placement along South
03 ® P ❑ T
Atlantic
Jetty at Masonboro Inlet.
Ocean
1.2
Jetty Head
04 ❑P FIT
4f. Total open water impacts
2.3
4g. Comments: the majority of the area impacted is atop existing submerged stone.
5. Pond or Lake Construction
If pond or lake construction proposed, then complete the chart below.
5a.
5b.
5c.
5d.
5e.
Wetland Impacts (acres)
Stream Impacts (feet)
Upland
Pond ID
Proposed use or purpose
(acres)
number
of pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
5f. Total
0
0
0
0
0
0
0
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
Page 8of13
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 ❑ Tar - Pamlico ❑ 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?
B1 ❑P ❑T
F-1 Yes
❑ No
B2 ❑P ❑T
F-1 Yes
❑ No
B3 ❑P ❑T
F-1 Yes
❑ No
6h. Total buffer impacts
0
0
6i. Comments:
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
Work will be confined to maximum extent practicable to original footprint of jetty. Impact area is minimized to that necessary
to adequately and safely complete the project.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
If possible, all work on the jetty will be done from barges and should remain within the right of way of the jetty. Rock used to
stabilize jetty will be clean and contaminant -free (no sediment). Storage of the stone prior to placement on the jetty will be in
industrial /construction locations that will minimal impact on the environment.
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 bv (check all that apple):
❑ DWQ ❑ Corps
❑ Mitigation bank
2c. If yes, which mitigation option will be used for this
El 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 9 of 13
PCN Form — Version 1.3 December 10, 2008 Version

3c. Comments:
4.
Complete if Making a Payment to In -lieu Fee Program
4a.
Approval letter from in -lieu fee program is attached.
❑ Yes
4b.
Stream mitigation requested:
linear feet
4c.
If using stream mitigation, stream temperature:
❑ warm ❑ cool ❑cold
4d.
Buffer mitigation requested (DWQ only):
square feet
4e.
Riparian wetland mitigation requested:
acres
4f.
Non - riparian wetland mitigation requested:
acres
4g.
Coastal (tidal) wetland mitigation requested:
acres
4h.
Comments:
5.
Complete if Using a Permittee Responsible Mitigation Plan
5a.
If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
6.
Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ
6a.
Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation?
❑ Yes ® No
6b.
If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.
Zone
6c.
Reason for impact
6d.
Total impact
(square feet)
Multiplier
6e.
Required mitigation
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1.5
6f. Total buffer mitigation required:
6g.
If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in -lieu fee fund).
6h.
Comments:
Page 10 of 13
PCN Form — Version 1.3 December 10, 2008 Version

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1.
Diffuse Flow Plan
1 a.
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: NA
2.
Stormwater Management Plan
2a.
What is the overall percent imperviousness of this project?
<10 %
2b.
Does this project require a Stormwater Management Plan?
❑ Yes ® No
2c.
If this project DOES NOT require a Stormwater Management Plan, explain why:
No
upland development, <10% impervious area
2d.
If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
NA
❑ 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?
NA
❑ Phase II
3b.
Which of the following locally - implemented stormwater management programs
❑ NSW
❑ 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
attached?
❑ Yes ❑ No
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 11 of 13
PCN Form — Version 1.3 December 10, 2008 Version

F.
Supplementary Information
1.
Environmental Documentation (DWQ Requirement)
1 a.
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)?
1 c.
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
letter.)
❑ Yes ❑ No
Comments: NA
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): NA
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.
NA
Page 12 of 13
PCN Form — Version 1.3 December 10, 2008 Version

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?
USFWS website, agency meetings, and communication /correspendence with Howard Hall and Pete Benjamin of the
USFWS.
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?
Fritz Rohde( 252 - 838 -0828) and NMFS
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?
John Mayer- USACE archaeologist
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: It will not change the base flood, 100 -year, elevation.
8c.
What source(s) did you use to make the floodplain determination? Digital flood insurance rate maps on the NCFPM
webpage.
Philip M. Payonk
Applicant /Agent's Printed Name
Date
Applicant /Agent's Signature
(Agent's signature is valid only if an authorization letter from the applicant
is provided.)
Page 13 of 13
PCN Form — Version 1.3 December 10, 2008 Version

Figure 1. Location Map