20060403 Ver 3_PreFiling 30-Day Clock Reached Email_20210405

Strickland, Bev
From: [e-mail]
Sent: Monday, April 5, 2021 12:01 AM
To: [e-mail]
Cc: Homewood, Sue
Subject: Pre -Filing Time Clock has been reached for Duke Energy Allen Steam Station Allen
Ash Basin Landfill Project - 20060403 Ver 3
Attachments: DWR Pre -Filing Meeting Request Form.pdf
The North Carolina Division of Water Resources has received the Pre -Filing Meeting Request Form for Duke Energy Allen
Steam Station Allen Ash Basin Landfill Project that you submitted on 3/5/2021. The ID number for that project is
20060403, Version 3.
Your Pre -Filing Meeting Request has now reached the 30 calendar days' requirement and your application can now be
accepted.
When you submit your application please upload a copy of the attached document in this email.
This email was automatically generated by Laserfiche workflow. Please do not respond to this email address, as
responses are not monitored.
Internal Use only: Non Transportation
i

DWR Pre -Filing Meeting Request Form
ID#*
Regional Office*
Reviewer List*
20060403
Version *
3
Winston-Salem Regional Office - [phone]
Sue Homewood
Pre -Filing Meeting Request submitted 3/5/2021
Contact Name *
Contact Email Address*
Project Name*
Project Owner*
Project County*
Owner Address:
Dicky Harmon
[e-mail]
Duke Energy Allen Steam Station Allen Ash Basin Landfill Project
Duke Energy Carolinas, LLC (Duke Energy)
Gaston
Street Address
526 South Church Street,
Address Line 2
City State / Rovince / Region
Charlotte NC
Fbstal / Zip Code Country
28202 United States
Is this a transportation project?* r Yes (' No
Type(s) of approval sought from the DWR:
r 401 Water Quality Certification - I— 401 Water Quality Certification -
Regular Express
fJ Individual Permit I— Modification
r Shoreline Stabilization
Does this project have an existing project ID#?*
r Yes (' No
Do you know the name of the staff member you would like to request a meeting with?
Sue Homewood
Please give a brief project description below and include location information. *

Duke Energy has developed closure plans for the Retired Ash Basin
(RAB) and the Active Ash Basin (AAB) at the Allen Station for the
disposal of Coal Combustion Residuals (CCR). Duke Energy
proposes to permit and build three new lined landfills, including the
Minimized Ash Basin Landfill (Min ABLF), the North Starter Landfill
(NSLF), and the South Starter Landfill (SSLF). These three landfills
will be capable of containing the estimated 19.36 million tons (16.33
million cubic yards [(cy]) of CCR from the adjacent ash basins. Duke
Energy submitted closure plans for the RAB and AAB at the Allen
Station on December 31, 2019, as required by CAMA-14 (AECOM
2020a).
The purpose of the project (proposed action) is to build three new
lined landfills (Min ABLF, NSLF, and SSLF) within the Allen Station
and to excavate CCR waste from the RAB and the AAB. The existing
unlined RAB and AAB historically received wet sluiced bottom ash
and had a total capacity of approximately 15.50 million cy of CCR
waste, including the approximately 0.83 million cy located in the
Distribution of Residual Solids (DORS) areas, that must be excavated
from the RAB and AAB. Construction of the new landfills will require
the placement of fill material, which will be excavated from four
stockpile/borrow sites located at the Allen Station and in the vicinity of
the landfill areas. The NSLF and SSLF will be single -celled landfills
between 22 and 29 25 acres in each landfill; the ABLF will contain
about five individual cells which are approximately 12 to 15 acres for
each cell. The landfills will require construction of supporting
infrastructure and facilities, including Leachate Collection and
Removal Systems (LCRS) for each of the three landfills and a single
receiving 3-acre leachate basin that will support all three landfills.
Construction of the preferred alternative (Alternative 1) considered a
6774-acre Min ABLF constructed fully within the northern section of
the AAB, a 2925-acre NSLF and a 22-acre SSLF located on Duke
Energy property at Allen Station. Additionally, the alternative would
include construction of LCRS and a 3-acre leachate basin.
Unavoidable impacts to WOTUS include 233 linear feet (If) of stream
impacts and 0.17 acres of wetland impacts associated with the
construction of the SSLF
Please give a couple of dates you are available for a meeting.
4/5/2021
Please attach the documentation you would like to have the meeting about.
Draft Allen IP 02.17.2021.pdf 935.18KB
Areas of Constraint Map - 03.03.21 Update.pdf 4.59MB
Fig 7.3a Allen Flood Plain Cross -Section 2.pdf 367.4KB
pdf only
By digitally signing below, I certify that I have read and understood that per the Federal Clean Water Act Section
401 Certification Rule the following statements:
• This form completes the requirement of the Pre -Filing Meeting Request in the Clean Water Act Section 401 Certification
Rule.
• I understand by signing this form that I cannot submit my application until 30 calendar days after this pre -filing
meeting request.
• I also understand that DWR is not required to respond or grant the meeting request.
Your project's thirty -day clock started upon receipt of this application. You will receive notification regarding meeting location
and time if a meeting is necessary. You will receive notification when the thirty -day clock has expired, and you can submit an

application.
Signature
Submittal Date
�r22d farm
3/5/2021