20200154 Ver 1_PCN Form Submission_20200127

DWR
Division of Water Resources
Pre -Construction Notification (PCN) Form
September 29, 2018 Ver 3
Initial Review
Has this project met the requirements for acceptance in to the review process?*
r Yes
r No
Is this project a public transportation project?*
G Yes IT No
Change only if needed.
BIMS # Assigned
20200154
Is a payment required for this project?*
r No payment required
r Fee received
r Fee needed - send electronic notification
Reviewing Office *
Wilmington Regional Office - [phone]
Information for Initial Review
1a. Name of project:
Northwest Water Treatment Plant E)pansion and Upgrades
1a. Who is the Primary Contact?*
Kelly Boone
1b. Primary Contact Email:*
[e-mail]
Date Submitted
1 /27/2020
Nearest Body of Water
Hood Creek; Bay Branch; Cape Fear River
Basin
Cape Fear
Water Classification
All are C,Sw. Cape Fear River has supplemental PNA (HOW) designation.
Site Coordinates
Latitude: Longitude:
34.302906-78.107009
A. Processing Information
County (or Counties) where the project is located:
Brunswick
Is this project a public transportation project?*
r Yes r No
1a. Type(s) of approval sought from the Corps:
W Section 404 Permit (wetlands, streams and waters, Clean Water Act)
W Section 10 Permit (navigable waters, tidal waters, Rivers and Harbors Act)
1b. What type(s) of permit(s) do you wish to seek authorization?
* Nationwide Permit (NWP)
* Regional General Permit (RGP)
7 Standard (IP)
Version#*
1
What amout is owed?*
IT $240.00
(- $570.00
Select Project Reviewer*
Robb Mairs:eads\rlmairs2
1c. Primary Contact Phone:*
[phone]
L.1

1c. Has the NWP or GP number been verified by the Corps?
r Yes r No
Nationwide Permit (NWP) Number:
Nationwide Permit (NWP) Number:
NWP Numbers (for multiple NWPS):
1d. Type(s) of approval sought from the DWR:
W 401 Water Quality Certification - Regular
r Non-404 Jurisdictional General Permit
r Individual Permit
12 - Utility Lines
7 - Outfall Structures/ Intake
le. Is this notification solelyfor the record because written approval is not required?
For the record onlyfor DWR401 Certification:
For the record onlyfor Corps Permit:
r 401 Water Quality Certification - Express
r Riparian Buffer Authorization
1f. Is this an after -the -fact permit application?*
r Yes r No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r Yes r No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r Yes r No
Acceptance Letter Attachment
1h. Is the project located in any of NC's twenty coastal counties?
r Yes r No
1i. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
r Yes r No r Unknown
1j. Is the project located in a designated trout watershed?
r Yes r No
B. Applicant Information
1d. Who is applying for the permit?
W Owner r Applicant (other than owner)
le. Is there an Agent/Consultant for this project?*
r Yes r No
2. Owner Information
2a. Name(s) on recorded deed:
Brunswick County
2b. Deed book and page no.:
Deed book 489, page 729-732
2c. Responsible party:
2d.Address
Street Address
PO Box 249
Address Line 2
city
Bolivia
Postal / Zip Code
28422
2e. Telephone Number:
[phone]
2g. Email Address:*
[e-mail]
State/ Rmince/ Rion
NC
Country
USA
2f. Fax Number:
[phone]
r Yes r No
r Yes r No

4. Agent/Consultant (if applicable)
4a. Name:
Kelly Boone
4b. Business Name:
CDM Smith
4c.Address
Street Address
5400 Glenwood Avenue
Address tine 2
Suite 400
Qy
Raleigh
Postal / Zip Code
27612
4d. Telephone Number:
[phone]
4f. Email Address:*
[e-mail]
Agent Authorization Letter*
Authorization signature Brunswick Cc NWTP.pdf
C. Project Information and Prior Project History
1. Project Information
1b. Subdivision name:
(if appropriate)
1c. Nearest municipality/ town:
Leland
2. Project Identification
2a. Property Identification Number:
01500080
2c. Project Address
Street Address
3954 Clearwell Drive NE
Address tine 2
City
Leland
Postal / Zip Code
28451
3. Surface Waters
3a. Name of the nearest body of water to proposed project:*
Hood Creek; Bay Branch; Cape Fear River
3b. Water Resources Classification of nearest receiving water:*
All are C,Sw. Cape Fear River has supplemental PNA (HQW) designation.
3c. What river basin(s) is your project located in?*
Cape Fear
3d. Please provide the 12-digit HUC in which the project is located.
030300050406 and 030300050407
4. Project Description and History
State / F rovince / FRagion
NC
Country
USA
4e. Fax Number:
[phone]
26.81 KB
2b. Property size:
33 acres (limits of disturbance at WTP
site+pipeline corridor)
Slate / F ravine / Pagion
NC
Country
USA
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:*
Brunswick County Public Utilities is expanding its Northwest Water Treatment Plant (NWTP) from 24 million gallons per day (mgd) to 45 mgd and upgrading its treatment process to
include advanced treatment (reverse osmosis) to remove perfluorinated compounds (i.e., Gen )� and other emerging contaminants found in its rawwater supply. This requires work at
the existing NWTP site including new structures and piping outside of wetland areas. The project also includes approximately 1800 feet of new rawwater main from the NWTP to an
existing rawwater main. The project also includes the construction of approximately 4 miles of new pipeline to convey concentrate from the reverse osmosis process for discharge to the
Cape Fear River. Land use in the project area includes public utility (at the NWTP). The 4-mile concentrate pipeline will be constructed primarily along road right-of-ways. Land use in
the area of the pipeline includes residential and vacant property.
U

4b. Have Corps permits or DWR certifications been obtained for this project (including all prior phases) in the past?*
r Yes r No r Unknown
4d. Attach an 8 1/2 X 11 excerpt from the most recent version of the USGS topographic map indicating the location of the project site. (for DWR)
NorthwestW7P_PlantPipelineLOD_UsgsTopoMap_20190815.pdf 636.86KB
4e. Attach an 8 1/2 X 11 excerpt from the most recent version of the published County NRCS Soil Survey map depicting the project site. (for DWR)
NorthwestWTP_PlantPipelineLOD_SoilsMap_20190815.pdf 1.14MB
4f. List the total estimated acreage of all existing wetlands on the property:
5.52 acres
4g. List the total estimated linear feet of all existing streams on the property:
1268feet
4h. Explain the purpose of the proposed project:*
The purpose of the project is to expand the Northwest Water Treatment Plant from 24 million gallons per day (mgd) to 45 mgd and to upgrade the treatment process to include
advanced treatment (reverse osmosis) to remove perfiuorinated compounds (i.e., Gen X) and other emerging contaminants found in Brunswick County's rawwater supply.
41. Describe the overall project in detail, including indirect impacts and the type of equipment to be used:*
Work at the Northwest Water Treatment Plant site includes additional rapid mixers and filters, with an upgraded clarifier, a new reverse osmosis facility, a new chlorine control and
storage building, residuals handling facilities improvements and associated facilities and site improvements. All work at the water treatment plant will occur outside of jurisdictional areas.
The project also includes approximately 1800 feet of new 36-inch rawwater pipeline from the water treatment plant to connect to an existing rawwater main. This raw water main will
cross two unnamed tributaries of Hood Creek with adjacent wetlands, with open -cut construction. The project also includes the construction of approximately 4 miles of new pipeline to
convey concentrate from the reverse osmosis process at the water treatment plant for discharge to the Cape Fear River. This 4-mile pipeline crosses five wetland areas with a
combination of open -cut construction and horizontal directional drilling where it is practicable. The outfall at the Cape Fear River will be constructed with excavation using a cofferdam.
Equipment to be used includes trenching equipment, trackhoes, bulldozers, dump trucks, cranes, a barge in the river, pile driving equipment, directional bore equipment, paving
equipment, and tree clearing equipment. Additional information about the proposed construction sequence for the work in the river, including the cofferdam, ouffall construction, and
HDD, is attached.
4j. Please upload project drawings for the proposed project.
Brunswick Co NWTP Exp and Conc Pipeline Combined Plans 404-401 (Jan 2020).pdf 115.1 MB
5. Jurisdictional Determinations
5a. Have the wetlands or streams been delineated on the property or proposed impact areas?*
r Yes r No r Unknown
Comments:
5b. If the Corps made a jurisdictional determination, what type of determination was made?*
r Preliminary r Approved r Not Verified r Unknown r N/A
Corps AID Number:
5c. If 5a is yes, who delineated the jurisdictional areas?
Name (if known): Jason Hales
Agency/Consultant Company: CDM Smith
Other:
5d1. Jurisdictional determination upload
NWTP PJD request 12_30_2019.pdf 6.31MB
NWTP PJD request data forms 12_30_2019.pdf 7.97MB
NWTP PJD request figures 12_30_2019.pdf 9.08MB
6. Future Project Plans
6a. Is this a phased project?*
r' Yes r 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?
i D. Proposed Impacts Inventory
1. Impacts Summary
la. Where are the impacts associated with your project? (check all that apply):
W Wetlands W Streams -tributaries F Buffers
W Open Waters r Pond Construction
2. Wetland Impacts

2a1 Reason (?)
2b. Impact type *M
2c. Type of W.
2d. W. name *
2e. Forested*
2f. Type ofJ
2g. Impact
Jurisdicition*(?)
area*
W2
HDD staging and
T
Unknown
PF04B
Yes
Both
0.115
laydown area
(acres)
W8
Excavation, installation
P
Unknown
PF04B
Yes
Both
0.123
of concentrate
(acres)
discharge pipe,
restoration, and
maintenance of
easement
W12
Excavation, installation
P
Unknown
No name
Yes
Both
0.070
of concentrate
(acres)
discharge pipe,
restoration, and
maintenance of
easement
W13
Excavation, installation
P
Unknown
No name
Yes
Both
0.017
of concentrate
(acres)
discharge pipe,
restoration, and
maintenance of
easement
W22
Excavation, installation
T
Unknown
No name
No
Both
0.025
of raw water main pipe,
(acres)
restoration
W24
Excavation, installation
T
Unknown
No name
Both
0.008
of raw water main pipe,
r-1
(acres)
restoration
2g. Total Temporary Wetland Impact
0.148
2g. Total Wetland Impact
0.358
2h. Comments:
3. Stream Impacts
2g. Total Permanent Wetland Impact
0.210
F
3a. Reason for impact (?)
3b.lmpact type *
3c. Type of impact*
3d. S. name *
3e. Stream Type *
Type of
3g. S. width *
3h. Impact
(?)
�3f.
Jurisdiction*
length*
Bank stabilization
Permanent
Stabilization
F�, Fear River
Perennial
Both
Average (feet)
(lir�rfeet)
S2
Excavation, pipe installation,
Temporary
Excavation
UT to Hood Creek
Intermittent
Both
10
25
restoration
Average (feet)
(lirfeet)
S3
Excavation, pipe installation,
Temporary
Excavation
Ur to Food Creek
Intermittent
Both
10
25
restoration
Average (feet)
(lir�rfeet)
31. Total jurisdictional ditch impact in square feet:
3i. Total permanent stream impacts:
30
3i. Total stream and ditch impacts:
80
3j. Comments:
4. Open Water Impacts
3i. Total temporary stream impacts:
50
4a. Site #
4af. Impact Reason
4b. Impact type
4c. Name of waterbody
4d. Activity type
4e. Wate rbody type
4f. Impact area
OW-1
Temporarily stringing
T
Cape Fear River
Other
Other
0.05
empty pipe (floating
pipe on river surface)
to prepare to install it
by HOD

OW-2 Outfall pipe in river - P Cape Fear River Excavation Other 0.03
installed by excavating
in cofferdam
4g. Total temporary open water Impacts: 4g. Total permanent open water impacts:
0.05 0.03
4g. Total open water impacts:
0.08
4h. Comments:
E. Impact Justification and Mitigation U
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project:
All work at the WTP site Will be constructed in upland areas, with the exception of the two stream/wetland crossings by the rawwater main, which are
necessary to connect to the existing LCFWASA rawwater main. All other wetlands at the WTP site were avoided. The concentrate pipeline was
designed to follow road right-of-ways to minimize impacts to streams and wetlands. The pipeline was designed to be on the side of the road that would
require the least amount of wetland and stream impacts, and many wetlands and streams were avoided by placing the pipe along the road where the
pipe will not require impacts. Where practicable, trenchless methods (horizontal directional drilling) will be used to cross wetlands and streams.
Specifically, Bay Branch (stream PS-2) and the wetlands W3 and W4 will be completely avoided using an HDD to cross them. Impacts to two additional
intermittent streams (IS-1 and IS-2) and extensive wetlands W1 and W2 will be avoided using HDD to cross rather than open -cut. Work at the river was
designed to minimize impacts including footprint and duration of construction while providing for stabilization of the river bank and outfall structure.
Work will be done within the footprint of a temporary cofferdam to avoid impacts.
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques:
Three separate horizontal directional drilling crossings will be used to avoid impacts to streams and wetlands ( avoiding impacts to IS-1, IS-2, W1, W2,
W3, W4, and PS-2). Erosion and sedimentation control measures will be used throughout the project to prevent sediment from reaching downstream
waters and wetlands. The USACE Regional Conditions for moratoria for in -river construction work will be followed.
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?
r Yes r No
2b. If this project DOES NOT require Compensatory Mitigation, explain why:
Project impacts are below thresholds for Nationwide Permit and General Certifications. Wetland, stream, and in -river work were avoided and minimized to the extent practicable using
trenchless technology (horizontal directional drilling), and sediment and erosion control measures will be used during construction to avoid impacts to downstream waters and wetlands.
F. Stormwater Management and Diffuse Flow Plan (required by DWR) u
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules?
r Yes r No
If no, explain why:
2. Stormwater Management Plan
2a. Is this a NCDOT project subject to compliance with NCDOT's Individual NPDES permit NCS000250?*
r Yes r No
2b. Does this project meet the requirements for low density projects as defined in 15A NCAC 02H .1003(2)?
r Yes r No
Comments:
Existing Stormwater Permit for Northwest WTP is SW8 091204. Minor modification was approved 10/7/2019. Coverage under SWG040000 (Linear General Permit) for the concentrate
discharge pipeline was approved by DEQ on 9/27/2019. Northwest WTP site will still meet requirements for low -density classification.
G. Supplementary Information u
1. Environmental Documentation
1a. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land?*
r Yes r No
1b. 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)?*
r Yes r No
Comments:

Project does not fall under SEPA requirements. USEPA WIFIA funding was sought at beginning of project (which would fall under NEPA requirements,
with USEPA WIFIA as lead agency); however, Brunswick County subsequently decided not to use WIFIA funding for this project.
2. Violations (DWR Requirement)
2a. Is the site in violation of DWR Water Quality Certification Rules It5ANCAC 2H .0500), Isolated Wetland Rules (15A NCAC 2H .1300), or DWR Surface Water or Wetland Standards or
Riparian Buffer Rules (15A NCAC 2B .0200)?*
r Yes r No
3. Cumulative Impacts (DWR Requirement)
3a. Will this project result in additional development, which could impact nearby downstream water quality?*
r Yes r No
3b. If you answered "no," provide a short narrative description.
Project will not increase development but will provide more highly treated drinking water to County's current and planned customers.
4. Sewage Disposal (DWR Requirement)
4a. Is sewage disposal required by DWR for this project?*
r Yes r Nor N/A
4b. Describe, in detail, the treatment methods and dispositions (non -discharge or discharge) of wastewater generated from the proposed project. If the wastewater will be treated
at a treatment plant, list the capacity available at that plant.
On -site sanitary waste at the Northwest WTP will be disposed through septic system, for which a permit is being requested from the County
Environmental Health Department. Concentrate discharge will be disposed through pipeline to proposed outfall at Cape Fear River.
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?*
r Yes r No
5b. Have you checked with the USFWS concerning Endangered Species Act impacts?*
r Yes r No
5c. If yes, indicate the USFWS Field Office you have contacted.
Raleigh
5d. Is another Federal agency involved?*
r Yes r No
What Federal Agency is involved?
NOAA NMFS (concurrence letter attached)
5e. Is this a DOT project located within Division's 1-8?
r Yes r No
5f. Will you cut any trees in order to conduct the work in waters of the U.S.?
r Yes r No
5g. Does this project involve bridge maintenance or removal?
r Yes r No
5h. Does this project involve the construction/installation of a wind turbine(s)?*
r Yes r No
r Unknown
5i. Does this project involve (1) blasting, and/or (2) other percussive activities that will be conducted by machines, such as jackhammers, mechanized pile drivers, etc.?
r Yes r No
If yes, please provide details to include type of percussive activity, purpose, duration, and specific location of this activity on the property.
Brunswick NWTP PCN Supporting Documentation Items C 4i and G 5i.pdf 62.32KB
5j. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat?
Correspondence with NMFS and USFWS; biological assessment of area including IPaC report (attached).
Consultation Documentation Upload
Brunswick LoC 06-19-2019.pdf 223.08KB
Biological Assessment Mena - Brunswick County NWTP Project 5_18_2019 with attachments.pdf 18.1 MB
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as an Essential Fish Habitat?*
r Yes r No
6b. What data sources did you use to determine whether your site would impact an Essential Fish Habitat?*
Review of NOAA Essential Fish Habitat mapper, hftps://www.habitat.noaa.gov/application/efhrriapper/indexhtml.

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?*
r Yes r No
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
NC SHPO's HPOWEB application and project review by NC SHPO (see attached).
7c. Historic or Prehistoric Information Upload
Brunswick_SHPO response_053119.pdf 96.53KB
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-yearfloodplain?*
r Yes r No
8b. If yes, explain how project meets FEMA requirements:
Project was evaluated for impacts to flood elevations and was determined to achieve no -rise.
8c. What source(s) did you use to make the floodplain determination?*
FEMA HEC model from NCFRIS; creation of duplicate effective model and effective conditions model; modeled cross sections without and with
proposed work. No -Rise Certification has been reviewed and approved by local jurisdiction (County) and State NFIP coordinator.
Miscellaneous U
Comments
CAMA application is also in process.
Miscellaneous attachments not previously requested.
Signature U
V By checking the box and signing below, I certify that:
• 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:
Kelly Reiser Boone
Signature
!lC�uy��462 aJ4�w�
Date
1 /27/2020

CSDM
Agent Authorization
Property/Site: Northwest Water Treatment Plant
Address of Site: 3954 Clearwell Drive NE
Leland, North Carolina 28451
Parcel Identification Number (PIN): 226004828041
Owner Information:
Name: Brunswick County Public Utilities
Address: P O Box 249
Bolivia, North Carolina 28422
Telephone Number: 910 253-2657
Fax Number:
E-mail Address: [e-mail]
Property Owner Certification:
I, the undersigned, a duly authorized owner of record of the property/properties identified herein,
do authorize representatives of the Wilmington District, U.S. Army Corps of Engineers (USACE)
and/ or the North Carolina Division of Water Resources (NCDWR) to enter upon the property
herein described for the purpose of conducting on -site investigations and issuing a
determination associated with Waters of the U.S. subject to Federal/State jurisdiction under
Section 404 and 401 of the Clean Water Act and/or Section 10 of the Rivers and Harbors Act of
1899. 1 also authorize CDM Smith to act in my behalf in the processing of this request and to
furnish supplemental information in support of this request, including stream/wetland matters in
coordination with the USACE and the NCDWR fielc*rificaAory and permit application:
Property Owner Signature:
Date: 01 /09/2020

DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD3Q Northw est WTP
UV1426
0 2,000 4,000 6,0001,000 Feet
1 in = 2,000 ft´Figure 2USGS Topographic MapBrunswick CountyPublic Utilities
Legend
3Q Northwest W TP
D D D D D D D D D D D D D Raw Water Line
Limit s of Disturbance
Concentrate DischargePipeline
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD3QNorthwest WTP
UV1426
BUTLER RD NEHOOPER RD NECLEARWELLDRNEBnB
Fo
Ma
BnB
BDC
DO
BDC
Fo
BDC
Fo
Ma
Ma
BnB
Lo
BaB
BnB
BnB
BaB
Wo
To BDCLo
GoA
Lo
BaB
Mk
Mk
Mk
Mu
BaB
BaB
BaBRa
GoA
BDC
BDC
BDC
NoB
BaB
GoA
Mk
BnB
NoB
Fo
CH
Lo
Lo
KrB
BaB
BnB
BDCBDCBDCBDC
BnB
NoB
Fo
PtLo
MkMk
Mk
Fo
Ur
BaB
BaB
BaB
W
BaB
To
Ma
Ma
BaB
Lo
BnB
On
Wo GoA
Fo
NoB CH
BaB
Ra
Pt
BaB
BDC
BDCNoB
BnB
GoA
DO
BaB
Lo
KrB
Wo
Fo
Lo
BaB
Ma
BaBBnB
Fo
Mu
Lo
Lo
GoA
To
BDC
BDC GoA
LoLo
Lo
BnB
BaB
On
BnB
BnB
PaA On
BnBBaB
GoA
GoAFo
Fo
BaB
BDC
KrB
Ma
Ra
NoB
Ly
To
BnB
Ma
Lo
KrB
KrB
MaBaB
Lo
0 2,000 4,000 6,0001,000 Feet
1 in = 2,000 ft´Figure 3Soils MapBrunswick CountyPublic Utilities
Legend
3Q Northwest W TP
D D D D D D D D D D D D D Raw Water Line
Limit s of Disturbance
Soil Class
Concentrate DischargePipeline
Soil Class De scription Farm Class
Bab Baymeade fine sand, 1 to 6 pe rce nt slopes State wi de Importance
BDC Bayme ade and Marvyn soi ls, 6 to 12 pe rce nt sl ope s Not Pri me
BnB Bl anton fi ne sand, 0 to 5 perce nt sl ope s Not Pri me
KrB Kure b f i ne sand, 1 to 8 pe rcent sl ope s Not Pri me
Lo Le on fi ne sand Unique ImportanceMaMandarin fi ne sand Not Pri meMkMuckalee l oam Not Pri me
On Onsl ow f i ne sandy l oam Pri me Farml and
Wo Woodi ngton fi ne sandy l oam Pri me i f Drai ne d
Brunswick County
Northwest WTP and Concentrate Discharge Pipeline
PCN Supporting Documentation – Item C, 4i and Item G, 5i
Item C 4i: Describe the overall project in detail, including indirect impacts and the type of equipment to
be used.
Item G 5i. Does this project involve (1) blasting, and/or (2) other percussive activities that will be
conducted by machines, such as jackhammers, mechanized pile drivers, etc.?

It is anticipated that the construction of the outfall structure will follow this sequence of work with the
following estimated timeline:
· Mobilization and Cofferdam (Sheet Pile) Installation (Up to 4 Week Duration)
o Launch two barges (one for the crane and one for the sheet piling materials) from the
Cape Fear Boat Works to the project site. The approximate barge dimensions will be
approximately 40 ft by 60 ft or 40 ft by 80 ft.
o Commence installation of cofferdam (likely sheet piles) from two barges within the river
on downstream side of the cofferdam for the proposed outfall structure and
mechanically stabilized earth (MSE) wall as shown on the drawings.
o Sheet piles to be driven or vibrated from a crane on the barge (up to 3 weeks of
vibration causing activities).
o Install internal bracing within the sheet pile wall (up to 1 week of internal bracing
installation).
o The final layout of the cofferdam is to be designed and completed by the Contractor’s
Design Engineer.
· HDD Installation (Up to 4 Week Duration – Up to 8 Weeks Total Schedule)
o Leave both barges on downstream side of cofferdam during this phase of work.
o On land, complete pilot hole drilling (up to 1 week).
o On land, complete 2 to 3 HDD reaming passes (up to 2 weeks).
o During 2nd week of reaming activities, begin to fuse HDPE pipe on land (up to 1 week) for
HDD and string out in river (i.e., float the pipe) along near-shore bank the day prior to
pullback. Tie pipe string to the bank overnight outside of navigational channel and
attach other end securely to one of the barges.
o During pullback (1 day activity (12 to 16 hours)):
String pipe out in river. During the pullback, the pipe will extend approximately
halfway across the width of the river and up to 1000 ft downstream.
Equip original barge crane with pipe sling to transition HDPE pipe into HDD
borehole. HDPE pipe to have between 50 and 100 ft radius of curvature from
river to transition into borehole. The final layout to be designed by Contractor’s
Design Engineer.
If necessary, mobilize crane or excavator to second barge equipped with pipe
slings prior to pullback during reaming to transition pipe into borehole.
Mobilize small tug boat or small boat to site prior to pullback to during reaming
to hold end of pipe in place during pullback to prevent “whipping” effect of
pipe.
· Pipe Installation and Outfall Construction (Up to 4 Week Duration – Up to 12 Weeks Total
Schedule)
o Leave two barges on downstream side of cofferdam during this phase of work.
o Dewater within the cofferdam concurrently with excavation discussed below.
o Excavate and install pipeline within the cofferdam from the manhole structure on land
to the outfall structure in the river (up to 1 week).
o Install 4 H-Piles within the cofferdam for the outfall structure (up to 2 days).
o Construct the cast-in-place outfall structure onto the piles (up to 2 weeks).
o Install scour protection (riprap, bedding stone and geotextile) within the cofferdam
footprint (up to 3 days).
· Complete Installation of MSE Wall and Backfill to Manhole Structure on Land (Up to 4 Week
Duration – Up to 16 Weeks Total Schedule)
· Cofferdam Removal and Demobilization (Up to 2 Weeks – Up to 18 Weeks Total Schedule)
o Remove cofferdam within river using vibratory hammer and cut-off sheet piles as shown
on drawings (up to 2 weeks of vibration causing activities).
o Return barge to Cape Fear Boat Works from the project site.

It is anticipated that approximately 4 to 6 months will be needed for construction within the river due to
the coordination between the land and river work. It should be noted that the final construction
sequence and timeline will be dependent upon the Contractor's proposed means and methods.
Permitted time frame for work within the Cape Fear River will be specified to the Contractor in the
Contract Documents upon permit approval.

North Carolina Department of Natural and Cultural Resources
State Historic Preservation Office
Ramona M. Bartos, Administrator
Governor Roy Cooper Office of Archives and History
Secretary Susi H. Hamilton Deputy Secretary Kevin Cherry
Location: 109 East Jones Street, Raleigh NC 27601 Mailing Address: 4617 Mail Service Center, Raleigh NC 27699-4617 Telephone/Fax: [phone]-6599

May 31, 2019

Alaina McCurdy
US Environmental Protection Agency
Washington, DC 20460

Re: Brunswick County Northwest Water Treatment Plant Expansion & Advanced Treatment
Improvements, Brunswick County, ER 19-1578

Dear Ms. McCurdy:
Thank you for your letter of April 30, 2019, concerning the above project.
We have conducted a review of the project and are aware of no historic resources which would be affected by
the project. Therefore, we have no comment on the project as proposed.

The above comments are made pursuant to Section 106 of the National Historic Preservation Act and the
Advisory Council on Historic Preservation’s Regulations for Compliance with Section 106 codified at 36 CFR
Part 800.

Thank you for your cooperation and consideration. If you have questions concerning the above comment,
contact Renee Gledhill-Earley, environmental review coordinator, at 919-807-6579 or
[e-mail]. In all future communication concerning this project, please cite the above
referenced tracking number.
Sincerely,

Ramona Bartos, Deputy
State Historic Preservation Officer

UNITED STATES DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
NATIONAL MARINE FISHERIES SERVICE
Silver Spring, MO 2091 D
JUN 1 9 2019
Refer to NMFS No: OPR-2019-01188
Ms. Alaina McCurdy
WIFIA Environmental Scientist, WIFIA
Water Infrastructure Division
Office of Wastewater Management
William Jefferson Clinton Building
1200 Pennsylvania Avenue, N.W.
Washington, DC 20460
RE: Response to the Request for Concurrence Pursuant to Section 7 of the Endangered
Species Act on Consultation Code: 04EN2000-2019-SLI-0736; Water Treatment Plant
Expansion and Advanced Treatment Improvements Project Applicant: Brunswick
County, North Carolina
Dear Ms. McCurdy:
On May 21, 2019, the National Marine Fisheries Service (NMFS) received your request for a
written concurrence under the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C.
1531 et seq.) that Environmental Protection Agency's (EPA) Water Infrastructure Finance and
Innovation Act (33 U.S.C. §5201 et seq.) program's support of Brunswick County's Northwest
Water Treatment Plant Expansion and Advanced Treatment Improvements Project is not likely
to adversely affect species listed as threatened or endangered or critical habitats designated under
the ESA. This response to your request was prepared by NMFS pursuant to section 7(a)(2) of the
ESA, implementing regulations at (50 CFR §402), and agency guidance for preparation ofletters
of concurrence.
We reviewed the consultation request document and related materials submitted by your agency.
Based on our knowledge, expertise, and the materials submitted in your request for informal
consultation, we concur with the EPA's conclusions that the proposed action is not likely to
adversely affect the NMFS ESA-listed species and/or designated critical habitat.
Specifically, we have determined that that the effects of the proposed action on Shortnose and
Atlantic sturgeon and designated critical habitat for Atlantic sturgeon would be insignificant.
This determination is based on the adjustments made to the discharge to eliminate toxicity, taken
with refinement of the target dilution and demonstration that design criteria achieve compliance
with the primary nursery area/high quality water regulations and State and EPA mixing zone
requirements. While your documentation did not identify interrelated or interdependent
activities, a statement to that effect was not made in your documentation. NMFS has made the
determination for you that there are no interrelated or interdependent activities for this action.
This concludes consultation under the ESA for species and/or designated critical habitat under
NMFS's purview on EPA's Water Infrastructure Finance and Innovation Act program's support
of Brunswick County's Northwest Water Treatment Plant Expansion and Advanced Treatment
Improvements Project.
* Printed on Recycled Paper
Reinitiation of consultation is required and shall be requested by the EPA or by NMFS where
discretionary Federal involvement or control over the action has been retained or is authorized by
law and: (a) take occurs; (b) new information reveals effects of the action that may affect listed
species or critical habitat in a manner or to an extent not previously considered in this
consultation; ( c) the action is subsequently modified in a manner that causes an effect to the
listed species or critical habitat not previously considered in this consultation; or ( d) if a new
species is listed or critical habitat designated that may be affected by the action (50 CFR
§402.16).
We look forward to further cooperation with you on other projects to ensure the conservation of
our threatened and endangered marine species and designated critical habitat. If you have any
questions on this consultation, please contact me at [phone] or by email at
[e-mail] or Pat Shaw-Allen at [phone] or by email at pat.shaw-
[e-mail].
cc: Pat Shaw-Allen
2
-
Cathryn E. Tortorici
Chief, ESA Interagency Cooperation Division
Office of Protected Resources