20170880 Ver 1_401 Application_20170718

Environmental Resources Section
DEPARTMENT OF THE ARMY
WILMINGTON DISTRICT, CORPS OF ENGINEERS
69 DARLINGTON AVENUE
WILMINGTON, NORTH CAROLINA 2840 3-1 34 3
July 12, 2017
Ms. Karen A. Higgins
North Carolina Department of Environmental Quality 2 0 1 7 p g g p
North Carolina Division of Water Resources
401 Wetland & Buffer Permitting Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Dear Ms. Higgins:
The U.S. Army Corps of Engineers (USACE) is seeking concurrence for use of Section 401 Water
Quality Certification #4085 for the repair of a scour hole below Lock and Dam No. 2 located in Bladen
County, North Carolina. Enclosed are four (4) copies of the Pre -Construction Notification Form (PCN)
and a check in the amount of $570 (check #1489).
The USACE, Wilmington District, proposes repair of a scour hole at the federally authorized Cape
Fear River, North Carolina, above Wilmington Project, specifically at Lock and Dam No. 2, located in
Elizabethtown, Bladen County, North Carolina. The proposed repair includes the placement of
approximately 67,700 tons of either granite or concrete rubble, to the size specifications of the North
Carolina Department of Transportation Class B riprap within the approximately 1.67 acre area, at the
downstream toe of the dam to fill a scour hole approximately 40 feet deep that extends approximately 360
feet downstream of the dam. This scour hole threatens to compromise the dam's structural integrity.
Total coverage of the river bottom would be approximately 73,000 square feet (1.67 acres). The proposed
action will preclude further erosion and unsafe conditions.
The proposed project construction duration will be approximately 240 days (8 months). The
proposed design will result in the covering of approximately 73,000 square feet (1.67 acres) of river
bottom. Fill material will be off-loaded from a barge by crane/track hoe. The barge will be loaded either
prior to arrival on-site, or with material temporarily held within designated land-based stockpile and
staging areas on Lock and Dam No. 2 property. Should the barge be loaded on-site, a temporary
pier/trestle may be constructed at the riverbank to allow trucks to unload fill material directly onto the
barge. In -water construction will not occur between 14 March and 1 June to accommodate sensitive
anadromous fish activity in the vicinity of the project area, and may affect construction dates and
anticipated duration.
Thank you for your attention to this matter. Should you have any questions or require additional
information, please contact Ms. Teresa Bullard of my staff by at [phone] or by email at
[e-mail].
Sincerely,
�Ik4 /a-, a'T
u JUL 1 8.2017
Elden J. Gatwood p - A RESOUR
Chief, Planning and Environmental 40A BUFFgR P RMIT
Enclosures

o�QF W ATFAOG
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.4 January 2009
Pre -Construction Notification (PCN) Form
A. Applicant Information
1. Processing
1 a. Type(s) of approval sought from the Corps:
❑ Section 404 Permit ❑ Section 10 Permit
1b. Specify Nationwide Permit (NWP) number: 3 or General Permit (GP) number:
1 c. Has the NWP or GP number been verified by the Corps? _
N Yes ❑ No
1d. Type(s) of approval sought from the DWQ (check all that apply):
❑X 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 ❑X No
For the record only for Corps Permit:
❑X 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 ❑X No
1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
❑ Yes ❑X No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ❑X No
2. Project Information
2a. Name of project:
Cape Fear Lock & Dam No. 2 — Scour Hole Repair
2b. County:
Bladen County
2c. Nearest municipality / town:
Elizabethtown, NC
2d. Subdivision name:
N/A
2e. NCDOT only, T.I.P. or state project no: N/A
3. Owner Information
3a. Name(s) on Recorded Deed:
US Government (Lock 2)
3b. Deed Book and Page No.
Deed Book 57; Deed Page 145
3c. Responsible Party (for LLC if
applicable):
U.S. Army Corps of Engineers
3d. Street address:
69 Darlington Ave
Wilmington, NC 28403
3e. City, state, zip:
3f. Telephone no.:
111111
3g. Fax no.:
JUL L 1 S 2017
3h. Email address:
`�-••ni�R nt�UURCES
401 & RI IFCF[� ocou�r� �...,
Page 1 of 10
PCN Form — Version 1.4 January 2009

4. Applicant Information (if different from owner)
4a. Applicant is:
❑ Agent ❑X Other, specify: USACE
4b. Name:
Jennifer Owens; Chief, Environmental Resource Section, USACE Wilmington District
4c. Business name
(if applicable):
US Army Corps of Engineers, Wilmington District
4d. Street address:
69 Darlington Ave.
4e. City, state, zip:
Wilmington, NC 28403
4f. Telephone no.:
Point of Contact: Teresa Bullard, 910-251-4725
4g. Fax no.:
910-251-4744
4h. Email address:
teresa. r. bu Hard @usace. army. mi I
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 10

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
132100781717
1b. Site coordinates (in decimal degrees):
Latitude: 34.625654 Longitude: -78.577035
1 c. Property size:
1.67 acres
2. Surface Waters
2a. Name of nearest body of water to proposed project:
Cape Fear River
2b. Water Quality Classification of nearest receiving water:
WS -V
2c. River basin:
Cape Fear 03030005
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:
See Attached Existing Conditions Description.
3b. List the total estimated acreage of all existing wetlands on the property: 0
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 360
3d. Explain the purpose of the proposed project:
The purpose of the project is to repair the scour hole below Lock & Dam No. 2., by filling in the scoured area to protect the dam structure.
3e. Describe the overall project in detail, including the type of equipment to be used:
See Attached Project Description.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
roject includin all rior hases in the ast?
M Yes ❑ No ❑ Unknown
Comments: 404 (b) 1 evaluation has been completed
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
El Preliminary E] Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known):
Agency/Consultant Company:
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
N/A
5. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
❑ Yes ❑X No ❑ Unknown
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project?
❑ Yes ❑X No
6b. If yes, explain.
Page 3 of 10
PCN Form — Version 1.4 January 2009

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
❑ Wetlands ❑X 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.
Wetland impact
number
Permanent (P) or
Temporary T
2b.
Type of impact
2c.
Type of wetland
2d.
Forested
2e.
Type of jurisdiction
Corps (404,10) or
DWQ (401, other)
2f.
Area of
impact
(acres)
W1 -
Choose one
Choose one
Yes/No
-
W2 -
Choose one
Choose one
Yes/No
-
W3 -
Choose one
Choose one
Yes/No
-
W4 -
Choose one
Choose one
Yes/No
-
W5 -
Choose one
Choose one
Yes/No
-
W6 -
Choose one
Choose one
Yes/No
-
2g. Total Wetland Impacts:
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.
Stream impact
number
Permanent (P) or
Temporary (T)
3b.
Type of impact
3c.
Stream name
3d.
Perennial (PER) or
intermittent (INT)?
3e.
Type of
jurisdiction
3f.
Average
stream
width
(feet)
3g.
Impact
length
(linear
feet)
S1 P
Fill
Cape Fear River
PER
Corps
200
360
82 -
Choose one
S3 -
Choose one
S4 -
Choose one
-
S5 -
Choose one
S6 -
Choose one
3h. Total stream and tributary impacts
3i. Comments:
Please see attached Drawings. Specifically drawing CN 102 which shows rock placement area.
Page 4 of 10
PCN Form — Version 1.4 January 2009

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 indiv dually list all open water impacts below.
4a.
Open water
impact number
Permanent (P) or
Temporary
4b.
Name of waterbody
(if applicable)
4c.
Type of impact
4d.
Waterbody
type
4e.
Area of impact (acres)
01
Choose one
Choose
02 _
Choose one
Choose
03 -
Choose one
Choose
04
Choose one
Choose
4f. Total open water impacts
4g. Comments:
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. 5d. 5e.
Wetland Impacts (acres) Stream Impacts (feet) Upland
(acres)
Flooded
Filled
Excavated Flooded
Filled
Excavated
P1
Choose one
P2
Choose one
- 5f. Total:
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:
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 vou MUST fill out Section D of this form.
6a. Project is in which protected basin?
❑ Neuse ❑ Tar -Pamlico ❑ Catawba ❑ Randleman ❑ Other:
6b.
Buffer Impact
number —
Permanent (P) or
Temporary
6c.
Reason for impact
6d.
Stream name
6e.
Buffer
mitigation
required?
6f.
Zone 1
impact
(square
feet)
6g.
Zone 2
impact
(square
feet
61
Yes/No
B2
Yes/No
B3
Yes/No
B4 _
Yes/No
B5 _
Yes/No
B6
Yes/No
6h. Total Buffer Impacts:
6i. Comments:
Page 5 of 10

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.
The proposed project will not have impacts to wetlands. The repair work will observe in water work moratoriums for anadromous fish and has been
coordinated with NMFS, USFWS, and NCWRC.
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Standard required sediment and erosion control measures will be followed throughout the construction process. Repair work will comply with all
special conditions of NWP 3 and associated NCDWR WQC.
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 ❑X No
2b. If yes, mitigation is required by (check all that apply):
❑ DWQ ❑ Corps
2c. If yes, which mitigation option will be used for this
project?
❑ Mitigation bank
El Payment to in -lieu fee program
❑ Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter)
Type: Choose one
Type: Choose one
Type: Choose one
Quantity:
Quantity:
Quantity:
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:
Choose one
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.
Page 6 of 10
PCN Form — Version 1.4 January 2009

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?
E] Yes OX 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 7of10

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 OX 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
2.
Stormwater Management Plan
2a.
What is the overall percent imperviousness of this project?
2b.
Does this project require a Stormwater Management Plan?
❑ Yes No
2c.
If this project DOES NOT require a Stormwater Management Plan, explain why:
This
project is for maintenance and repair of a scour hole located in the river below Lock and Dam #2. There
will be no paving or impermeable
surface added to the land as part of this project. All on land staging areas are temporary, with no permanent impact.
2d.
If this project DOES require a Stormwater Management Plan, then provide a brief, narrative
description of the plan:
2e.
Who will be responsible for the review of the Stormwater Management Plan?
3.
Certified Local Government Stormwater Review
3a.
In which localgovernment's jurisdiction is thisproject?
❑ 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 ❑ 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 8 of 10
PCN Form — Version 1.4 January 2009

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
❑X 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.) Project is Categorically Excluded, no EA was required.
Comments:
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
❑X No
or Riparian Buffer Rules (15A NCAC 26 .0200)?
2b. Is this an after -the -fact permit application?
❑Yes
❑X 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
❑X 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.
Bladen county is currently planning to construct a fish passage structure over top of Lock and Dam #2 in the future. This fish passage
will be
constructed on top of the scour hole repair area.
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.
Page 9of10
PCN Form — Version 1.4 January 2009

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or
0 Yes ❑ No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act
❑x Yes ❑ No
impacts?
5c. If yes, indicate the USFWS Field Office you have contacted.
Raleigh
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
Phone call with USFWS and use of the IPAC online system
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑X Yes ❑ No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
Contact and meeting with NMFS, which determined that we could avoid impact by avoiding work during the anadromous fish moratorium window.
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 ❑X 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?
Coordination with SHPO through phone call and email determined that there were no recorded sites within the project area. No impact.
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA -designated 100 -year floodplain?
❑X Yes ❑ No
8b. If yes, explain how project meets FEMA requirements:
The scour hole repair area will be located within the Cape Fear River which is within the 100 year flood plain. The repair will not increase flooding
potential within the surrounding area.
8c. What source(s) did you use to make the floodplain determination?
North Carolina Floodplain mapping program website: http://www.nefloodmaps.com/
4
Teresa R Bullard
' ,1 t ;+ . 1
07-12-2017
Applicant/Agent's Printed Name
Date
Applicant/Agent's Signature
(Agent's signature is valid only if an authorization
letter from the applicant isprovided.)
Page 10 of 10

Cape Fear Lock and Dam No. 2 PCN Additional information:
3a. Proiect Description, Existing Conditions: Under the Corps' Dam Safety Action Classification
(DSAC) system, Lock and Dam No. 2 in 2008 received a classification of II. This 'high urgency'
classification indicates that the structure, without to repair or remediation, could fail during
normal operation or due to a disruptive event and endanger public safety. The structure was
constructed for the purpose of commercial navigation and currently stands as a dam 229 feet
long, 50 feet wide, and 10 feet high (at its downstream face), and an associated lock chamber
200 feet long by 40 feet wide. The structure was originally constructed in 1917 and was
modified in 1934 to increase the lift by three feet to its present dimensions. After
approximately a century of use, water passing over the dam has resulted in erosion of the rock
rubble mound along the downstream toe of the dam. The resulting turbulent scour hole is
presently approximately 40 feet deep and extends approximately 360 feet downstream of the
dam.
Lock and Dam No. 2 is part of a three-part lock and dam system between Wilmington and
Fayetteville that was originally constructed for commercial barge traffic use but now is primarily
used for recreational traffic year-round, and for anadromous fish passage through periodic
upstream locking. Additional uses include visitor access to picnic and boat launching facilities.
3d. Purpose of the Proposed Proiect: The purpose of the project is to repair the scour hole area
below Lock and Dam No. 2 by using granite or concrete rubble, to the size specifications of N.C.
Department of Transportation Class B riprap
(https://connect.ncdot.gov/projects/construction/ConstManRefDocs/l044,%202012%2OStanda
rd%20Specifications.pdf), placed at the downstream toe of the dam at a maximum 20% slope to
fill in the existing scour hole. This has been determined to be the most effective slope in
minimizing material costs while providing necessary structural stability to structures comprising
Lock and Dam No. 2. The proposed design will result in the covering of approximately 73,000
square feet (1.67 acres) of river bottom. Fill material will be off-loaded from a barge by
crane/track hoe. The barge will be loaded either prior to arrival on-site, or with material
temporarily held within designated land-based stockpile and staging areas on Lock and Dam No.
2 property. Should the barge be loaded on-site, a temporary pier/trestle may be constructed at
the riverbank to allow trucks to unload fill material directly onto the barge. This created rocky
substrate may provide spawning habitat for endangered anadromous fishes, including the
Shortnose sturgeon (Acipenser brevirostrum) and Atlantic sturgeon (Acipenser oxyrhynchus
oxyrhynchus). Available rocky substrate downstream of the proposed project area is rare in the
Cape Fear River.
Using quarried rock and concrete rubble will reinforce the dam's structural integrity while
maintaining other project uses and reduces, to the extent practicable, suspended solids that
could be released downstream.

1
Gal
US Army Corps
of Engineers®
Wilmington District
2 13 4 15 b
F SCOUR HOLE REPAIR
LOCK & DAM No. 2
CAPE FEAR RIVER
E BLADEN COUNTY, NORTH CAROLINA
DI
3
SOLICITATION NO.: W912PM-17-B-0017
CONTRACT NO.:
ISSUE DATE: JULY 2017
L
SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION
AND APPROVAL OF ALL DRAWINGS IN THIS SET AS INDEXED ON THIS SHEET.
Approval Recommended:'
CHIEF, DESIGN and GENERAL ENGINEERING SECTION DATE
Approved:'
CHIEF, ENGINEERING BRANCH DATE
THIS PROJECT WAS DESIGNED BY THE U.S. ARMY CORPS OF ENGINEERS,
WILMINGTON DISTRICT. INDIVIDUALS WHOSE SIGNATURES AND REGISTRATION
DESIGNATIONS APPEAR ON THESE DOCUMENTS ARE OPERATING WITHIN THE
SCOPE OF THEIR EMPLOYMENT. SIGNATURES ARE REQUIRED BY ER 1110-1-6152.
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Lock and Dam No. 3
LOCK AND DAM No. 2 a
Lock and Dam No. I
GENERAL LOCATION MAP
NOT TO SCALE
`I1
I
N
SCALE: 1"= 500'
1000 500 O 500 1DOo 1500
SCALE IN FEET
SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION
AND APPROVAL OF ALL DRAWINGS IN THIS SET AS INDEXED ON THIS SHEET.
Approval Rernm ded:'
CHIEF. DESIGN aW GENERAL ENGINEERING SECTION GATE
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INDEX OF DRAWINGS
Sheet No.
Title
G101
INDEX OF DRAWINGS AND VICINITY MAP
CN101
SITE PLAN
CN102
SCOUR HOLE REPAIR PLAN
CN103
SECTIONS - DAM STA. 2+00 TO STA. 2+75
CN104
SECTIONS - DAM STA. 3+00 TO STA. 3+75
CN105
SECTIONS - DAM STA. 4+00 TO STA. 4+75
CN106
SECTIONS - CAPE FEAR RIVER STA. 0+50 TO STA. 1+25
CN107
SECTIONS - CAPE FEAR RIVER STA. 1+50 TO STA. 2+25
CN108
SECTIONS - CAPE FEAR RIVER STA. 2+50 TO STA. 3+25
CN109
SECTIONS - CAPE FEAR RIVER STA. 3+50 TO STA. 4+00
CN110
DETAILS
`I1
I
N
SCALE: 1"= 500'
1000 500 O 500 1DOo 1500
SCALE IN FEET
SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION
AND APPROVAL OF ALL DRAWINGS IN THIS SET AS INDEXED ON THIS SHEET.
Approval Rernm ded:'
CHIEF. DESIGN aW GENERAL ENGINEERING SECTION GATE
I I
US Army Corps
of EnglneerO
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SHEET ID
CHIEF, ENGINEERING BRANCH DATE
' THIS PROJECT WAS DESIGNED BY THE U.S. ARMY CORPS OF ENGINEERS,
WILMINGTON DISTRICT. INDIVIDUALS WHOSE SIGNATURES AND REGISTRATION
(-^ I O
G
DESIGNATIONS APPEAR ON THESE DOCUMENTS ARE OPERATING WITHIN THE
SCOPE OF THEIR EMPLOYMENT. SIGNATURES ARE REQUIRED BY ER 1110.1-8152,

G
ME
E '+
C P40
4gFTNTO�ry
+ Fz R
BWGREENE PROPERTIES LLC,
D
+ 2126000
318500
' N(ITFC•
l■
To 6 CLARK BROTHERS LLC.
W
Nship
' DAM ALIGNMENT
FOR SECTIONS SEE SHEETS CN103 TO CN105
COFFER CELL (TYP.) V�
ry
FISH LADDER 3"00
eo
LOC KMASTERS
OFFICE`Sfoq;
GARAGE x^,,.:c'..,!,t ,4t
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0"00 �SOCgNg7�cPIN 2-3 -
LIGHT
Yt•e,.,, '..` APPROXIMATE LIMITS 212sooD 2lzasoD
OF STONE PLACEMENT +
SEE SHEET CN1D2 +
319500 31950D
'. CAPE FEAR RIVER ALIGNMENT
`,+'�i, `.t•' :+• np:�'>-�= +? FOR SECTIONS SEE SHEETS CN106 TO CN109
APPROXIMATE SHORELINE
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PARKING LOI, /
i
. ' ASPHALT PAVEMENT
BWGREENE PROPERTIES LLC. /�—ACCESS GATE \ STOCKPILE & STAGING AREA
�
BWGREENE PROPERTIES LLC.
1. HYDROGRAPHIC SURVEY PERFORMED 17 SEPTEMBER 2013 BY GEODYNAMICS LLC WITH MULTIBEAM SURVEY EQUIPMENT.
11. THE CONTRACTOR SHALL STORE AND SECURE ALL EQUIPMENT AND MATERIALS WITHIN THE STAGING AND STOCKPILE AREAS
SHOWN ON THE DRAWINGS OR APPROVED BY THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE.
2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NAVD 68 DATUM.
12. CONSTRUCTION ENTRANCES TO THE STAGING AND STOCKPILE AREAS SHALL BE INSTALLED IN ACCORDANCE WITH THE
3. HORIZONTAL DATUM: NAD 1983. VERTICAL DATUM: NAVD 88.
CONSTRUCTION ENTRANCE DETAIL SHOWN ON SHEET CN110.
4. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS MADE ON THE DATE INDICATED AND CAN
13. UPON COMPLETION OF THE WORK, AND PRIOR TO FINAL DEMOBILIZATION, THE CONTRACTOR SHALL RESTORE ALL AREAS
ONLY BE CONSIDERED AS INDICATING THE GENERAL CONDITIONS EXISTING AT THAT TIME. RIVER BOTTOM ELEVATIONS ARE
USED AND IMPACTED, INCLUDING BUT NOT LIMITED TO STAGING AND STOCKPILE AREAS, TO A CONDITION EQUAL TO OR
SUBJECT TO CHANGE DUE TO SHOALING AND RIVER BOTTOM SCOUR.
BETTER THAN THAT FOUND AT THE TIME THE NOTICE TO PROCEED WAS ISSUED. THE CONSTRUCTION ENTRANCES SHALL
ALSO BE REMOVED AND GRADES AND ELEVATIONS RESTORED TO PRE -CONSTRUCTION CONDITIONS. RESTORATION OF
5. THE CONTRACTOR MAY PROVIDE ONSHORE STAGING AREA(S) OUTSIDE THE GOVERNMENT PROPERTY LIMITS, IF THE CON-
THE STAGING AND STOCKPILE AREAS AND CONSTRUCTION ENTRANCES IN PREVIOUSLY GRASSED AREAS WILL INCLUDE
TRACTOR'S PARTICULAR OPERATION SHOULD SO DICTATE. THE CONTRACTOR SHALL FULLY COMPLY WITH ALL FEDERAL,
REMOVAL OF ALL GRAVEL AND STONE FRAGMENTS AND SEEDING AND MULCHING IN ACCORDANCE WITH SECTION SEEDING
STATE, AND LOCAL LAWS, REGULATIONS AND ORDINANCES IN LOCATING SECURING AND USING ANY ONSHORE STAGING
OF THE SPECIFICATIONS.
AREA(S). NO DIRECT PAYMENT WILL BE MADE FOR PROVIDING ONSHORE' STAGING AREAS.
14. OVERHEAD UTILITY LINES ARE PRESENT AT THE PROJECT SITE. THE CONTRACTOR SHALL MAINTAIN A SAFE WORKING
6. ALL STAGING AREAS, STOCKPILE AREAS, AND RIVER ACCESS ON GOVERNMENT PROPERTY SHALL BE SUBMITTED FOR
DISTANCE BETWEEN EQUIPMENT AND POWER LINES AT ALL TIMES AS OUTLINED IN THE SAFETY MANUAL.
REVIEW AND APPROVAL BY THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE WITHIN FIFTEEN (15)
CALENDAR DAYS FROM ISSUANCE OF THE NOTICE TO PROCEED AND BEFORE ANY STONE DELIVERY. STOCKPILING STONE
15. NO CONSTRUCTION ACTIVITY IS ALLOWED ON THE CONCRETE ESPLANADE OTHER THAN FOR SURVEYING PURPOSES.
ON EXISTING PAVED SURFACES WILL NOT BE ALLOWED. AVAILABLE STONE STOCKPILE AREAS ARE SHOWN ON SHEET CN101.
16. APPLYING ANY LOAD TO THE EXISTING LOCK STRUCTURE IS STRICTLY PROHIBITED. MOORING TO THE LOCK STRUCTURE
7. NO IN WATER CONSTRUCTION FOR THE SCOUR HOLE REPAIR WILL BE ALLOWED DURING THE PERIOD FROM 1 FEBRUARY
IS STRICTLY PROHIBITED.
THRU 31 JULY.
17. THE CONTRACTOR SHALL COORDINATE ACCESS GATE ENTRY WITH THE CONTRACTING OFFICER OR HIS/HER DESIGNATED
8. FLOOD EVENTS, HIGH FLOW RATES, AND HIGH WATER LEVELS IN THE CAPE FEAR RIVER MAY OCCUR DURING CONSTRUCTION.
REPRESENTATIVE.
HISTORICAL INFORMATION IS AVAILABLE AT http:/Inc.water.usgs.gov/.
18. SEE REFERENCE DRAWINGS R-1 & R-2 FOR 2 AUGUST 2016 HYDROGRAPIC SURVEY PERFORMED BY GOEDYNAMICS LLC WITH
9. THE CONTRACTOR SHALL FURNISH AND PLACE UNDERLAYER MATERIAL AND ARMOR STONE IN ACCORDANCE WITH THE
MULTIBEAM SURVEY EQUIPMENT.
STONE SECTION OF THE SPECIFICATIONS. SEE SHEET CN102 FOR ADDITIONAL PLACEMENT LIMIT DETAILS. THE STONE SHALL
BE PLACED TO PROVIDE A FINISHED SURFACE IN ACCORDANCE WITH THE SECTIONS SHOWN ON SHEETS CN103 THRU CN109.
10. EXISTING STRUCTURES INCLUDING THE DAM, LOCK, FISH LADDER, DOLPHINS, FENDERS, COFFER CELLS, FISHING PIER, BOAT
RAMP, ROADS, CONCRETE WALKS, FENCING AND ANY OTHER EXISTING FEATURES DAMAGED BY CONTRACTOR OPERATIONS
SHALL BE REPAIRED TO THE SATISFACTION OF THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE AT
NO COST TO THE GOVERNMENT.
2128500
+
318500
FLOW
FLOW
s
LEGEND:
FENCE
TREELINE/CANOPY
STOCKPILE & STAGING AREA
APPROXIMATE STONE PLACEMENT LIMITS
----5--- EXISTING CONTOUR
—P— OVERHEAD POWER LINE
—•—•—•- LIMITS OF GOVERNMENT PROPERTY
AREA AVAILABLE TO CONTRACTOR
SOUNDING
n CONTROL MONUMENT
— SP— TEMPORARY SILT FENCE
N
SCALE: 1"=100'
200 100 0 100 200 300
SCALE IN FEET
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of Engineers®
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EXISTING SHEETPILE
CAPE FEAR Ri VER
ALIGNMENT #2, RIVER CENTERLINE
O
TRANSITION ARMOR STONE PLACEMENT AREA- SEE NOTES
(DO-_.o®o,o,
COFFER CELLS
s.;'„:'i;i: S:•"s' F.=:%tis;Ys=s�s3Cs'F:r,.;:y.,:-t::r.:: ...-:.:-r ... - -., .. ..
ELIZABET H PWN
TOWN
CONTROL MONUMENT/
PIN2-5
N = 319,20 /
E = 2,127,081.681.6 33 /
EL = 32.631
3
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a APPROXIMATE SHORELINE
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lb 'V 'S 'l% P ti a'
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2+00
19
LOCK CHAMBER
1+00.
1 CONTROL MONUMENT
PIN 7
N = 319,217.895
�� ♦ �_ � w R �_--IC 0' 411'N P'�y i0/ '0 ti 'o ti' b .. y; },'y i,;.4`
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10 ',`' -.O _r0_' --_17_r �L =--� O wti ^ h^ P 0 0.y h 0 0� 0 ^0 `l ' '♦ h i<.'si t
�' o h ti w o• P o rs s= /
°V TRAN81TION ARMOR STONE PLACEMENT AREA - SEE NOTES
s' sr. •sg• ;i; s'x„Y;a. �3rs., :%tii.':'': 'i�
- ;J: --sem �yi«rli5s'vY` 3;�'•� Vii.: Cs`=F:r : s;is' s” _ f" CONC. BOAT
RAMP
COFFER CELLS /
E = 2,127,116.866
CONTROL MONUMENT
EL = 32.672
PIN 20
N = 319,140.254
CONCRETE
E = 2,127,279.191
LOCK 2E
EL = 32.861
ESPLANADE
CONTROL MONUMENT
0+00
N = 319,006.037
PIN 2-3
N = 319,129.125
E = 2,127,179.932
EL = 32.754
NOTES: I I X -`
1. SEE TABLE 1 FOR COORDINATES DEFINING THE LIMITS OF THE TOP OF ARMOR
STONE PLACEMENT.
2. AREA DEFINED BY PRIMARY STONE PLACEMENT LIMITS REQUIRES A MINIMUM
ARMOR STONE LAYER THICKNESS OF 5.5' OVER ANY REQUIRED UNDERLAYMENT
MATERIAL. THE LIMITS AND COORDINATES DEFINE THE TOP OF ARMOR STONE.
TOP OF ARMOR STONE ELEVATION SHALL MEET ELEVATIONS DEFINED
AND SHOWN IN THE SECTIONS ON SHEETS CN103 THRU CN109.
3. AREA DEFINED BY TRANSITION ARMOR STONE PLACEMENT LIMITS REQUIRES
ARMOR STONE ONLY WITH MINIMUM LAYER THICKNESS OF 2.8'. THE LIMITS AND
COORDINATES DEFINE THE TOP OF ARMOR STONE.TOP OF ARMOR STONE
ELEVATION SHALL MEET ELEVATIONS DEFINED AND SHOWN IN THE SECTIONS
ON SHEETS CN103 THRU CN109. NOTE SOME ELEVATION DEVIATIONS MAY BE
ALLOWED WITHIN THE TRANSITION ARMOR STONE PLACEMENT LIMITS
DOWNSTREAM OF THE LOCK CHAMBER - EXAMPLE SHOWN ON SHEET CN103,
SECTION STA 2+25.
4. SEE SHEET GN101 FOR ADDITIONAL NOTES.
Horizontal Alignments used for Section Display, Sheets CN103 thru CN109
#1 - Alignment Along Approximate Upstream Face of Dam
PI Station Northing Easting Bearing
0+00 319,133.9 2,127,011.4 24 deg 52 min 12.5 sec
6+00 319,678.3 2,127,263.7
#2 - Alignment Along Approximate Centerline of River Flow
PI Station Northing Easting Bearing
0+00 319,406.1 2,127,137.5 65 deg 07 min 21.9 sec
6+00 319,153.7 2,127,681.9
Note: Station 3+00 Alignment #1 is Approximate Centerline of River Flow and
is Equal to Station 0+00 Alignment #2
ALIGNMENT #11, DAM FACE
CONTROL MONUMENT
LOCK 2E
N = 319,006.037
E = 2,127,214.889
EL = 36.704
TABLE 1- Top of Armor Stone Placement Limits_
_
Primary Stone Placement Limits
' Transition Armor Stone Placement Limits
Pnt No.
Eastme
Northin
Near Dam
1
2,127329
319432
I Pnt No.
EazSne
Northing_
2
2,127,320
319,428
6
2,127,260
319,218
3
2,127,257
319,457
19
2,127,133
319,276
4
- Z127,245
_319 460
_"
20
2,127,230
319,487
5
1 2,127,151
319,278
21
2,127 290
319,459
6
2,127,260'
319,218
- - 22
4127,299
319,446 _j
7
' 2,127,309
- 319,218
- 1 - -
2,127,329
319,432
_
�.. 2,127,330
..
9
1 376
319,227
Transition Armor Stone Placement Limits
12,127,393
_?J27
319,190
Downstream of Locit Chamber
11
2,127,426
1 319,180
,
Pnt No.
Eastnging
I
Northing_
12
; 2,127,482
7
2,127,309_
319,218 .
13
_2,127515
e—_------------
_319,189
319,261
8 _..
2,127,330
319,230 i
_-------- -
14
-
t
319,305 _ _
_i. . _._ . _ 9 ......_
2127,376
319,227.
--.
15
- --..2127,496
2,127,414
319,413
10
-2,127,393
—
319,190
16
2,127,432
319,474
7
2,127,309
319,218
17
2,127,384
319,487
18
2,127,347
319,439
Q
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LEGEND:
�, „- x �-- FENCE
�Y TREELINE / CANOPY
STOCKPILE & STAGING AREA
TRANSITION ARMOR STONE PLACEMENT AREA
__. APPROXIMATE STONE PLACEMENT LIMITS
N
EXISTING CONTOUR
p— OVERHEAD POWER LINE
LIMITS OF GOVERNMENT PROPERTY
AREA AVAILABLE TO CONTRACTOR
SCALE: 1"=50'
a3 a SOUNDING 100 so 0 50 100 150
CONTROL MONUMENT SCALE IN FEET
— TSF — TEMPORARY SILT FENCE
I 1
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1. WIRE FABRIC SHALL BE A MINIMUM OF 32" IN WIDTH AND SHALL HAVE A MINIMUM OF
6 LINE WIRES WITH 12" STAY SPACING.
2. FILTER FABRIC SHALL HAVE A MINIMUM OF 36" WIDTH. FILTER FABRIC SHALL BE FASTENED
ADEQUATELY TO THE WIRE FABRIC AS DIRECTED BY THE CONTRACTING OFFICER OR
HIS/HER DESIGNATED REPRESENTATIVE.
3. STEEL POSTS SHALL BE 5 FEET (MIN) IN HEIGHT AND SHALL BE OF THE SELF -FASTENER
ANGLE STEEL TYPE.
4. THE CONTRACTOR SHALL PLACE TEMPORARY SILT FENCE AS SHOWN ON PLATE CN102 OF
THE PLANS AND DETAIL ABOVE AND AS DIRECTED BY THE CONTRACTING OFFICER OR HIS/HER
DESIGNATED REPRESENTATIVE.
5. THE CONTRACTOR SHALL INSPECT TEMPORARY SEDIMENT FENCE AT LEAST ONCE A WEEK AND
AFTER EACH RAINFALL. MAKE ANY REQUIRED REPAIRS IMMEDIATELY. REMOVE SEDIMENT DEPOSITS
AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE NEXT RAIN AND TO REDUCE
PRESSURE ON THE FENCE. TAKE CARE TO AVOID UNDERMINING THE FENCE DURING CLEANOUT.
6. THE CONTRACTOR SHALL PERFORM ALL WORK IN SUCH A MANNER THAT STATE WATER QUALITY
STANDARDS OUTSIDE OF THE CONSTRUCTION AREA ARE NOT VIOLATED. ALL EROSION AND
SEDIMENTATION CONTROL MEASURES SHALL BE IN ACCORDANCE WITH THE NORTH CAROLINA
EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL.
TEnglneersTO
SHEET ID
CN110

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LD2 Bathymetry
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NOTE;
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part for "IOU USACE Lank and Dam Nat
riydriI-phlaaurvay. Th€a data is not ra
he rr,pd 1?lirond rhr# Iment9 Mend
purp=3sr ronh by'. USAGE:
All sutvsy reto7ei! sGfatlt ea. and .s4arr
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lfrdropraar D4
46
Bem �tn, CH.
Chart Scale= 1-,269
0 12.5 25 50 75
LM9ff
Feet
0 5 10
20
Checked By: Chti9 Freetwn
Meters
Horizontall Datum
F� 5a�fr -,:Doti cwosna f
Pra anion
Lam4crt C.006rmal Ctirilo
dolts
Foatus
V"Ocat O;atuln
NAV084 jCeold 124)
VedwAl Control
rua
Horizontal Contra!
I rtfa
HYDROGRAPHIC SURVEY
OF LOCK AND DAM NO.2
survey Results: Bathyrnetry
LM9ff
2' �'"Y 11—
Produced By; Dawi Barns ein
ChartSedes talo i
Checked By: Chti9 Freetwn
_Reu:1
Dates Surveyed
Date Created; 812$1201$
lkupst 2; 2016