NC0003417_Correspondence_20190607 (5)

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May 2, 2016
Mr. Jeffrey Poupart, Section Chief
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 276994617
Subject: H.F Lee Energy Complex
Harry K Sideris
Senior Vice President
Environmental, Health & Safety
526 S. Church Street
Mail Code: EC3XP
Charlotte, NC 28202
[phone]
Request for concurrence with pH adjustment
Amendment to existing and pending NPDES permit renewal application
NC0003417
Wayne County
Dear Mr. Poupart,
As discussed during the meeting between Division of Water Resources staff and Duke Energy
(Duke) staff on April 27, 2016, this letter amends our existing NPDES application under which
the plant currently operates and our pending NPDES permit application to disclose the potential
use of several products for pH adjustment. An updated list of chemicals is attached. Please
include this with the relevant permit files.
Based on discussion, it -
application, no permit modification would be necessary and Duke is authorized to utilize these
additives to assure compliance with NPDES permit limits for pH are maintained. We request
that you confirm this understanding.
If you have any questions regarding this letter, please contact Mr. Shannon Langley at (919) 546-
2439 or [e-mail].
I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in. accordance with a system. designed to assure that qualified personnel properly gather and evaluate
the information. submitted. Based onn my inquity of the person. or persons who manage the system, or those persons
directly responsible for gathering the information, the information. submitted is, to the best of my knowledge and
belief, true, accurate, and complete. I ant aware that there are significant penalties for submitting false information,
including the possibilioT of fines and imprisonment for knowing violations.
Sincerely,
Harry K. Sideris
SVP Environmental Health and Safety
cc: David May - DWR Washington Regional office
Steve Cahoon — NC 15
Mike Graham — HF Lee
Shannon Langley — NCRH 15th floor

Duke Energy Progress, LLC., H. F. Lee Energy Complex
NPDES Permit Number NC0003417
Attachment 5. Potential Discharges Not Covered By Analysis
Estimated
Quantity
Chemical
(used per ear)
Fr4uenc
Pur ose
NALCO Stabrex ST-70
800 gal
As
Surface Air Cooler biocide
NALCO 3D Trasar 3DT189
300 gal
As required
Wet Surface Air Cooler corrosion
control
NALCO BT 3000
150 lb
As needed
Boiler corrosion inhibitor
Ammonium Hydroxide (19%)
1,200 gal
As required
Boiler condensate pH control
NALCO Y302939.52
Sodium hypochlorite, 10-16%
34,000 gal
As required
Raw water biocide
Winter alum liquid
36,000 gal
As required
Raw water treatment
Caustic, 25% tech grade
21,000 gal
Continuous
Raw water pH control
Caustic,
12,000 gal
Continuous
Ash pond pH control
Soda Ash
4,000 lb
As required
Ash pond pH control
Rochem Fyrewash
280 gal
As required
Wayne County Combustion Turbine Site
Turbine compressor cleaning
NALCO PC-77
110 gal
As required
Wayne County Combustion Turbine Site
RO System membrane low pH cleaner
NALCO PC 98
400 gal
As required
Wayne County Combustion Turbine Site
RO System membrane high pH cleaner
NALCO PermaTreat PC-191
220 gal
Continuous
Wayne County Combustion Turbine Site
RO System antiscalant
NALCO 7408 (sodium bisulfite)
880 gal
As needed
Various water stream dechlorination
NALCO PC 11
variable
As required
Biocide for Reverse osmosis system
Conntect 6000 Compresser Cleaner
300 gal
As needed
Wayne County Combustion Turbine Site
Turbine compressor cleaning
Miscellaneous laboratory solutions and
2 gal
As required
Wayne County Combustion Turbine Site
reagents
RO water testing
Nalco 7465
< 1 gallon
As required
Foam Control
Nalco 7468
< 1 gallon
As required
Foam Control
Sulfuric Acid
As required
pH adjustment of ash basin discharge
Acetic Acid
As required
pH adjustment of ash basin discharge
Citric Acid
As rewuired
pH adjustment of ash basin discharge
Hydrochloric acid
As required
pH adjustment of ash basin discharge
Alum
As required
pH adjustment of ash basin discharge
COZ
As required
pH adjustment of ash basin discharge
A5-1 May, 2015