20060638 Ver 7_401 Application_20170512

• Amec Foster Wheeler Environment and Infrastructure
4021 Stirrup Creek Drive, Suite 100
amec Durham, North Carolina 27703
foster Phone: [phone] Fax: [phone]
wheeler
LETTER OF TRANSMITTAL
TO: Ms. Karen Higgins DATE: May 11, 2017 r
NC DWR, 401 & Buffer Permitting V
Branch
512 North Salisbury Street PROJECT NO.: 7810-16-0764
Raleigh, NC 27604 PROJ. NAME: Revised HF Lee Seep Collection PCN Application
SUBJECT: NWP 7 PCN Application
WE TRANSMIT TO YOU:
SUBJECT:
®DRAWINGS
❑SPECIFICATIONS
❑CALCULATIONS
❑REPORT
❑COST ESTIMATE
®AS NOTED
HEREWITH
ACTION:
❑FOR YOUR INFORMATION
®FOR YOUR COMMENT OR APPROVAL
❑RETURNED FOR CORRECTION: RESUBMIT
❑APPROVED AS NOTED
[:]AS REQUESTED
UNDER SEPARATE COVER
SENT BY:
[—]MAIL
❑CERTIFIED MAIL
❑EXPRESS
[]COURIER
®HAND DELIVERED
❑FACSIMILE:
pages (includin transmittal sheet)
COPIES DATE DESCRIPTION
4 5/11/2017 Revised Nationwide Permit #7 PCN Application
REMARKS:
CC:
0
RIM @ 19 a W 12
d
MAY 1 2 2017
Senior Ecologist
Direct Phone: [phone]
CONFIDENTIALITY NOTICE: This message is intended only for the use of the individual or entity to which it is addressed, and may contain information that is
privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, or the employee or agent responsible
for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify us immediately by telephone and return the original message to us at the above address via the U.S. Postal
Service. Thank you.
If transmission is not received in good order, please call Josh Witherspoon at [phone]
Docum&0 Form Revised 10118101

of W n r�R
oma, pG Office Use Only: D
- Corps action ID no
DWQ project no. MAY 1 2 2017,
Form Version 1.4nu ry 2009
Page 1 of 10
PCN Form — Version 1.4 January 2009
Pre -Construction Notification (PCN) Form
A.
Applicant Information
1.
Processing
1a.
Type(s) of approval sought from the Corps:
❑X Section 404 Permit ❑ Section 10 Permit
1b.
Specify Nationwide Permit (NWP) number: 7 or General Permit (GP) number:
1c.
Has the NWP or GP number been verified by the Corps?
❑ Yes X❑ 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:
❑ Yes ❑X 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
1g.
Is the project located in any of NC's twenty coastal counties. If yes, answer 1h
below.
N Yes N No
1h.
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
N Yes N No
2.
Project Information
2a.
Name of project:
HF Lee Seep Collection and Conveyance System
2b. County:
Wayne
2c.
Nearest municipality / town:
Goldsboro
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:
Duke Energy Progress, LLC
3b.
Deed Book and Page No.
Book 1453 Page 229
3c.
Responsible Party (for LLC if
applicable):
3d.
Street address:
1677 Old Smithfield Road
3e. City, state, zip:
Goldsboro, NC 27530
3f.
Telephone no.:
919-546-7457
3g.
Fax no.:
919-546-3669
3h.
Email address:
[e-mail]
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: Duke Energy Employee
4b. Name:
Steve Cahoon
4c. Business name
(if applicable):
Duke Energy
4d. Street address:
410 S. Fayetteville Street
4e. City, state, zip:
Raleigh, NC 27601
4f. Telephone no.:
919-546-7457
4g. Fax no.:
919-546-3669
4h. Email address:
[e-mail]
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):
2579623548
1b. Site coordinates (in decimal degrees):
Latitude: 35.38516998 Longitude: 78.07801819
1c. Property size:
2119 acres
2. Surface Waters
2a. Name of nearest body of water to proposed project:
Neuse River
2b. Water Quality Classification of nearest receiving water:
WS -IV, NSW
2c. River basin:
Neuse
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:
The site contains gas/oil fired turbine units and associated facilties and an ash basin. The site has undergone decommissioning of the former coal
fired generation plant and associated facilities. The area surrounding hte plant is predominantly agricultural, undeveloped forests, and residential.
3b. List the total estimated acreage of all existing wetlands on the property: 370
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 47674
3d. Explain the purpose of the proposed project:
Construction of a seepage collection and conveyance system to return seep water to the ash basin as well as a diversion channel.
3e. Describe the overall project in detail, including the type of equipment to be used:
See attached construction drawings & proposed project details. Typical constuction equimpment incuding excavators, dump trucks, etc. may be used.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (includingall prior phases)in the past?
❑X Yes ❑ No ❑ Unknown
Comments:
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
E9 Preliminary ❑ Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known): Amec Foster Wheeler
Agency/Consultant Company: Amec Foster wheeler
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
Field reviews by USACE personnel for jurisdictional determination were conducted on 4/1/15, 4/21/15, 3/22/17, 7/20/17, and 9/20/17.
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
1a. 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.
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 P
Excavation
Headwater Wetland
No
Corps
0.09
W2 T
Fill
Headwater Wetland
Yes/No
Corps
0.14
W3
Choose one
Choose one
Yes/No
N/4
Choose one
Choose one
Yes/No
W5
Choose one
Choose one
Yes/No
W6
Choose one
Choose one
Yes/No
2g. Total Wetland Impacts:
0.23
2h. Comments:
The diversion channel and berm construction will result in 0.09 acre of permanent impacts to wetlands for construction of the diversion channel and
0.14 acre of temporary impacts for construction of an access path.
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
INT
Corps
3
30
S2
Choose one
S3
Choose one
S4
Choose one
S5
Choose one
S6
Choose one
3h. Total stream and tributary impacts
30
3i. Comments:
The proposed placment of the concrete sump box within the stream channel will result in 30 linear feet of permanent stream impact.
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 indivi ually list all open water impacts below.
4a.
Open water
impact number
Permanent (P) or
Temporary T
4b.
Name of waterbody
(if applicable)
4c.
Type of impact
4d.
Waterbody
type
4e.
Area of impact (acres)
O1
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 you 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
T
6c.
Reason for impact
6d.
Stream name
6e.
Buffer
mitigation
required?
6f.
Zone 1
impact
(square
feet)
6g.
Zone 2
impact
(square
feet
—Temporary
131
Yes/No
62
Yes/No
B3
Yes/No
134
Yes/No
65
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 limits of disturbance (LOD) for the proposed seepage collection and conveyance system will be limited to the areas necessary for the placment of
the seepage collection box and will have no additional stream impact. Impacts to jurisdictional streams will be kept to the smallest footprint
practicable. Impacts to jurisdictional wetlands resulting from construction of the diversion channel will be kept to the smallest footprint practicable.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Compost filter socks will be utilized to prevent sediment from entering jurisdictional features during project construction as well as preventing
sediment from leaving the LOD. Accumulated sediment will be removed when it reaches 1/2 the above ground height of the filter sock barrier. Areas
of temporary construction impacts will be restored to pre -construction conditions. Matting will be utilized for the temporary access path.
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
❑ Yes ❑X No
buffer mitigation?
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.
6c.
6d.
6e.
Zone
Reason for impact
Total impact
Multiplier
Required mitigation
(square feet)
(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 7 of 10

E.
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1.
Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified
❑ Yes ❑X 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 ❑X 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 ❑x No
2c.
If this project DOES NOT require a Stormwater Management Plan, explain why:
The will be no impervious surfaces associated with this project.
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):
HSessionLaw 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)
1a.
Does the project involve an expenditure of public (federal/state/local) funds or the
❑ Yes
❑X 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
El Yes
❑ 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.)
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
0 No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b.
Is this an after -the -fact permit application?
❑Yes
Q No
2c.
If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3.
Cumulative Impact's (DWQ Requirement)
3a.
Will this project (based on past and reasonably anticipated future impacts) result in
El Yes
Q 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.
This
project will not generate wastewater.
Page 9 of 10
PCN Form — Version 1.4 January 2009

S. 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?
5c. if yes, indicate the USFWS Field Office you have contacted.
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
USFWS Information, Planning, and Conservation System (IPaC) webslte and the N C. Natural Heritage Program (NCNHP) Natural Heritage
Database Search Interactive website.
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?
httpJAvrww habitat noaa.gov/pmtection/efhlhabitatmapper.htm-
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?
N.C. Dept. of Cultural Resources, State Historic Preservation Office (SHPO) interactive website (HPOWEB).
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:
The seepage collection box will be installed below ground. Current FEMA flood elevations will not be impacted.
8c. What source(s) did you use to make the floodplain determination?
NC Flood Maps. FEMA/FIRM number 3720256800J, dated December 2, 2005.
Applicant/Agent's Printed Name
Appllcant/Agent's Signature
Date
(Agent's signature Is valid only If an authorization
letter from the applicant Isprovided.)
Page 10 of 10

USACE Pre -Construction Notification — NWP 7
Duke Energy Carolinas, LLC
HF Lee Seepage Collection and Conveyance System
Wayne County, NC
ATTAC H M E NTS
Figure 1
Site Location Map
Figure 2
USGS Topographic map
Figure 3
NRCS Soils Map
Figure 4
National Wetland Inventory Map
Figure 5
Jurisdictional Waters Map
Figure 6
Floodplain Map
Attachment A — HF Lee Seepage Plan Narrative
Seep Collection and Conveyance System Design Plans

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Attachment A
HF Lee Seepage Plan and Diversion Channel Narrative
The following steps constitute the effort to collect and reroute baseflow, including seepage, from
the discharge channel to the north of the HF Lee 1982 (Active) ash pond. Please refer to the
design drawings for locations of select construction components.
1. Erosion and sedimentation control features will be installed prior to all construction
activities.
2. Compost filter socks will be installed at locations along the limits of disturbance (LOD)
where the potential for sediment runoff may exist.
3. A diversion channel/berm will be constructed north of the existing stream channel.
4. Baseflow will be directed into the diversion channel prior to and during construction of the
seepage collection and conveyance system.
5. A 6'x6'x4' exterior precast, reinforced concrete box will be installed within the channel.
The box will be constructed with 6'X4' drop inlet with a reinforced concrete curb and
endwalls. The box will be installed such that the drop inlet faces the upstream direction,
with the curb and endwalls at the downstream end of the box.
6. Upon installing the concrete box, the remainder of the excavation will backfilled with
compacted clay. Rip rap will be placed on nonwoven geotextile material that will be placed
over the compacted clay material previously backfilled in the excavation.
7. A collection pump station will be constructed outside of the stream channel. Water
collected will be returned to the collection pump station. A force main will discharge
collected water to the adjacent ash basin.
8. Upon completion of the seepage collection and conveyance construction and site
stabilization, baseflow will be returned to the existing stream channel.
The project also includes the construction of a stormwater diversion channel and temporary
access path. The diversion channel will collect stormwater from surrounding agriculture fields
and prevent this water from entering the sump box and seepage collection system. The seepage
collection system is proposed to only capture seepage from the ash basin and return the seepage
to the ash basin. Construction of the diversion channel will result in 0.09 acre of permanent
wetland impacts and 0.14 acre of temporary wetland impacts associated with an access path for
the diversion channel construction. Matting will be place in the wetland impacted for the access
path.