20141121 Ver 1_Modifications_20141124

Homewood, Sue
From: Ward, Tara M <Tara.Ward @duke - energy.com>
Sent: Monday, November 24, 2014 11:25 AM
To: Bailey, David E SAW; Homewood, Sue
Subject: Duke Energy Carolinas PCN for Dan River Intake Dredge
Attachments: Duke Energy Dan River PCN - Intake Dredge.pdf, Figure 1 - Dredging Project Plan.pdf
Duke Energy Carolinas, Inc. submitted a Pre - Construction Notification Form for a proposed dredge around the intake
structure at its Dan River Combined Cycle Station located in Rockingham County, North Carolina on October 14,
2014. Duke Energy is proposing to change the method of disposal and no longer expects to have any return water from
this project. Sections B.3.e and D.1.b of the PCN have been modified to capture these changes and is attached.
The proposed project will use an Eddie Pump on a floating barge to dredge the intake structure of the plant. The
location for the disposal of the dredge material has changed. The project has been modified to pump the dredge
material to a basin in the retired coal yard. The basin is designed to contain all the dredge material and a 3 inch rain
event and still contain at least 6 inches of freeboard. Any storm water runoff from the surrounding area will be diverted
around the basin. No return water is expected to reach Waters of the U.S., however we are submitting this PCN as a
precaution.
Thank you for your assistance with this project. I have only attached the updated PCN and the dredging project plan, if
any of the additional information included in the initial submittal or if more detail on the basin is needed please let me
know. If you have any questions or comments regarding this email please contact me at (864) 590 -8226 or
[e-mail].
Thank you,
Tara M. Ward
Senior Environmental Specialist
Duke Energy, Water Programs
864 -590 -8226 - cell
Tara. Ward (a�duke -energy

OF tiM A t�R
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.4 January 2009
A.
Pre - Construction Notification (PCN) Form
Applicant Information
1.
Processing
1 a.
Type(s) of approval sought from the Corps:
❑X Section 404 Permit ❑ Section 10 Permit
1 b.
Specify Nationwide Permit (NWP) number: 16 or General Permit (GP) number:
1c.
Has the NWP or GP number been verified by the Corps?
Q 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 Q 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 Q 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 Q No
2.
Project Information
2a.
Name of project:
Dan River CC Plant Intake Structure Dredging
2b.
County:
Rockingham
2c.
Nearest municipality / town:
Eden NC
2d.
Subdivision name:
NA
2e.
NCDOT only, T.I.P. or state project no:
NA
3.
Owner Information
3a.
Name(s) on Recorded Deed:
Duke Energy Carolinas, Inc
3b.
Deed Book and Page No.
Book 1411 Page 2100
3c.
Responsible Party (for t.bC if
applicable):
3d.
Street address:
900 S. Edgewood Road
3e.
City, state, zip:
Eden NC 27288
3f.
Telephone no.:
(919) 546 -7457
3g.
Fax no.:
(919) 546 -4409
3h.
Email address.
steve,[e-mail]
Page 1 of 10
PCN Form — Version 1.4 January 2009

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4f.
Telephone nn..
(864) 590 -8226
4g.
Fax no.
(919) 516 -4469
4h.
Email address.
; tara.ward @duke- energy.co
5.
Agent/Consultant Information (if applicable)
5a.
Name,
5b,
Business name
5c. Street :id
5d City, state, zipl
5e. Telephone no.:

• •
identification la. Property • PIN or •. 16
1 b. Site coordinates (in t• '•
# i4-
River 2a. Name of nearest body of water to proposed project,
2b. Water Quality Classification of nearest receiving water:
! • E t !
Dan liver
Longitude: 79.72608
acres
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application.
The site is for operation of an electric generating station. The area immediately surrounding the site is forested with the Dan River bordering the site
the south and east and the Town of Eden to the northwest of the site.
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: U
3d. Explain the purpose of the proposed project:
Maintenance dredging at the station intake structure to provide cooling water and assure continued electric service to the Duke Energy Service area
�• i- • • • - •° i ne T •- Or equipment to 6- °•
•
Comments: ,(a. Have jurisdictional wetland or stream determinations by the Yes No Unknown
Corps or State been requested or obtained for this property
4b, If the Corps made the jurisdictional determination, what type D Preliminary . Final
of determination was made?
4c. If yes, who delineated the jurisdictional areas? Agency /Consultant Company:
Blame (if known): Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
. ! . !
a, Have permits or certifications been requested or obtained for,es too unknown
this project ;including all prior phases) in the past?
b, If yes, explain in detail according to `help file' instructions.
eneral permit No 1994,04319 issueed February 22, 1995, NWP 11 cto er 2012. See Attached
Project 6. Future
6a. Is this a phased project?
b, if yes, explain,
Duke Energy requests 0he permit be wri-en to ai ow dredging on an annual, periodic or as needed basis for the duration of tie current Nationwide
e° €t cycie.,
Page 3 of s
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)
[1 Wetlands El Streams — tributaries E] Suffers 0 Open platers it Pond Construction
If there are wetland impacts proposed on the site, then complete this
2a. 2b, 2c.
Wetland impact I Type of impact Type of wetland
number
Permanent (P) or
1
Choose one I
Choose
one
W2
Choose one
Choose
one
W3 -
Choose one
Choose
one
W4 -
Choose one
Choose
one
W5 -
Choose one
Choose
one
S1
I Choose one
Choose
one
=1 • s. Lft N2
for each wetland area impacted,
2d. 2e, 2f,
Forested Type of jurisdiction Area of
` t Corps (404,10) or impact
DWQ (401. other) (acres)
* • . • e M
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. 1
3b, 3c,
3d. 3e. 3f,
3g.
Stream impact
Type of impact Stream name
j Perennial (PER) or Type of Average
Impact
number
intermittent (INT)? jurisdiction stream
length
Permanent (P) or
width
{linear
Temporary (T)
(feet)
feet)
S1
Choose one
S2 -
Choose one
i
S3
Choose one
S4
Choose one
S r
Choose one
S6
Choose one
3h. Total stream and tributary impacts
3i, Comments:
No stream cts.
Page 4 of 40
PCN Fora, 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 individual) list all open water im acts below.
4a. 4b, 4c. 4d. 4e.
Open water Name of waterbody
impact nurr ber (if applicable) Type of impact Waterbody € Area of impact (acres)
5h. Is a dam high hazard permit required?
Yes C] 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 impact- re airs rrtti anon, then
ou MUST fill out Section D of this form.
5a. Project is in which protected basin?
Q Ne se E] Tar - Pamlico Catawba E] Randleman
Z Other. Roanoke
b. 6c.
6d, 5e.
f, 5g,
Buffer Impact reason for impact
Stream name Buffer �
Zone 1 Zone
number —
#
mitigation i
impact impact
Permanent or
required? i
(square square
Tern ram d)
feet j feet)
i
3
3
B #
,
.. Yes/No ;
B5
B63
6n, Total Buffer Impacts

1 a, Specifically describe measures taken to avoid or minimize the proposed impacts in designing project,
I b, Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques,
Dredging will be performed using an Eddie Pump mounted on a long reach excavator secured to a floating barge, Dredged # f
an open basin in the retired coal yard. The basin is designed to accommodate all the dredge material • #.
Any storrn water runoff up-slope of this basin will be diverted around the basin No return water is expected to reach Dan River. This permit is bein
requested as a precautionant measure.
2. Corrilpiensatont f . # for f acts to Waters of the or of
impacts 2a. Does the project require Compensatory Mitigation for El Yes No
# Waters of or of
2c. If yes, which mitigation option will be used for this
project?
# `i •! - ! i
rm_i !F N ; ;
El Mitigation bank
Payment to program
Type: Choose one Quantity:
Type: Choose one Quantity:
Type: Choose one Quantity:
# # 4 i #f
a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan,
Page 6 of 10
Cl Form — `version 1 4 January 2009

6. Buffer Mitigation (State Regulated Riparian Buffer Rules) -- required by E WQ
6a. Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation? E] Yes to
amount of mitigation required.
6c. 6d. l 6e.
Zone Reason for impact Total impact Multiplier ! Required mitigation
I (square feet) i (square feet)

2. Stormwater Management Plan
2a, at is the overall percent imperviousness of this project? 0%
2b, Does this or ject re wire a Stormwater Mann ament Plan? Yes No
2c, If this project DOES NOT require a Stormwater Management Plan, explain why:
2d If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
2e. Who will be responsible for the review of the Stormwater Management Plan?
3. Certified Local Government Stormwater Review
3a. In which local qovernment's iurisdiction is this oroiect?
3b. Which of the following locally-implemented stormwater management progra
apply (check all that apply): I
3c, Has the approved Stormwater Management Plan with proof of approval been
attached?
4a. Which of the following state-implemented storm titer management programs apply
(check all that apply'}
4b, Has the approved Stormwater Management Plan with proof of approval been
S. DWO 401 Unit Stormwater Review
5a, Does the Stormwater Management Plan meet the appropriate requirements?
5b, Have all of the 401, Unit submittal requirements been met?
El Phase 11
NSW
USMP
Water Supply Watershed
E] Other:
ElCoastal counties
OHOW
[]ORW
ClSession Law 2006-246
[]Other:
E] Yes [] No
[] Yes [] No
El Yes E] No
Page 8 of 10
P Form —Version 1A January 2009

## # #
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federallstatellocal) funds or the
use of public (federal /state) land? Q Yes No
2. Violations (DWQ Requirement)
a. 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, � El Yes n No
or Riparian Suffer Rules (15A NCAC 2B ,0200)?
2b. Is this an after - the -fact permit application? I ❑Yes Q No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation (s):
•. E e ••
3a. Will this project (based on past and reasonably anticipated future impacts) result in
additional development, which could impact nearby downstream water quality?
a
3b If you to the above, # i qualitative
most recent DWQ
# # "# s • • # • # •. accordance # - description.
a. Clearly detail the ultimate treatment methods and disposition ( non- discharge or discharge) of wastewater generated from
the proposed project, or available ca aci4i of the subject facility.
Page 9 of 10
PCN Form — Version 1 .4 January 2009

6. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a, Will this project occur in i or near an area with federally protected species or 3
habitat? I Z Yes E] No
5b- Have you checked with the USFWS concerning Endangered Species Act El 0 Yes No
impacts? I
5c, If yes, indicate the USFWS Field Office you have contacted, I Raleigh
5d. at data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
See attached,
6a, Will this project occur in or near an area designated as essential fish habitat? it E] Yes Z No
7b, What data sources did you use to determine whether your site would impact historic or archeological resources?
The No State Historic Preservation Office web site-LM*t,://www.hpo.dcr.state-nc.,i-r&�=' sAr-' lofe(L-wt,-m—#vw*ite-,94, WvWW*irz
there will be no impacts to Town Creek associated with this project,
mz��=
8a. Will this project occur in a FEMA-designated 100 -year floodplain? Yes
8b. If yes, explain how project meets FEMA requirements;
Accumulated sediment will be removed from the 100 year floodplain,
load lam Mapping Information System
UNKEHISM
ApplicantIA-gents Printed Name
NC
ApplicantlAgents Signature
' Agenf s signature is valid onty if an authonzation
letter from the avolficant is orovided1i
■

1

Ip, Dpscdbe the overall pro, po in d
ptaif
jr,;ding the tytbra of eqvin'nent to be ns'p�d''
The basin volume will be monitored and if the water surface approaches capacity, the water wilt be
pumped down, after settlement, using tankers and transported to an appropriate disposal facility.
Depending on efficiency of settlement, a flocculent from the NC DWR list of approved PAMS/Flocculants
may be used to promote settlement within receiving facility limits for total suspended solids.
Once all necessary dredging is complete and the dredged material has been adequately dewatered, the
materials will be tested to determine if suitable for onsite use as a beneficial fill or cover soil
supplement, if the dredged is not suitable for onsite use the material will be disposed of in an approved
landfill.
Again we do not expect to have any return water and this PCN is being submitted only as a precaution.
EM
Sd- What data sources did you use to determine whether your site would impact Enclangered Species or
Des�gnated Critical habitat?
USFWS website, NC Natural Heritage Program website, and communication with Sarah McRae of the
USFWS Raleigh Field Office, One speclies of concern the Roanoke darter could potentially be affected by
the pro;ect, However, in conversations with USFWS the darter is not known within � miles of the
A
proposed projec-t, Therefore the pro ect is unlikely to affect any threatened or endangered species(see
-3ttached erna," from USMS),