NC0038377_Amendment to Permit-Chemical List Addition_20241022

441.) DUKE Mayo Steam Plant
ENERGY. Duke Energy Progress
PROGRESS 10660 Boston Road
Roxboro, NC 27574
October 17,2024
Dr. Sergei Chernikov
North Carolina Department of Environment and Natural Resources
North Carolina Division of Water Resources RECEIVED
1617 Mail Service Center
Raleigh,NC 27699-1617
OCT 22 2024
Subject: Duke Energy Progress,Inc.
Mayo Electric Generating Plant NCDEQ/DWR/NPDES
NPDES Permit No.NC0038377
Person County
Amendment to Permit File—Chemical List Addition
Dear Dr. Chernikov:
Duke Energy Progress, Inc. (Duke) respectfully submits this letter to amend our existing NPDES
application under which the plant currently operates. The amendment is to disclose the use of Hydrex
Ultimer 7752, see attached SDS. This product is a flocculant used in the ash basin to remove sediment
prior to the water treatment system. Please include this with the relevant application file.
Based upon discussion,it is our understanding that with this modification to the existing permit application
file,no permit modification would be required,and Duke is authorized to utilize this additive.
Should you have any questions regarding this submittal or require additional information, please contact
Joyce Dishmon at 336-394-5524 or email [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 on my inquiry 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 am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations.
Sin rel ,
Jas albott
Plant Manager
Mayo Electric Generating Plant
Attachment

NALGO Water SAFETY DATA SHEET
An Ecolab Company ULTIMER® 7752
Section: 1. PRODUCT AND COMPANY IDENTIFICATION
Product name : ULTIMER®7752
Other means of identification : Not applicable.
Recommended use : FLOCCULANT
Restrictions on use : Refer to available product literature or ask your local Sales Representative for
restrictions on use and dose limits.
Company : Nalco Company
1601 W. Diehl Road
Naperville, Illinois 60563-1198
USA
TEL: [phone]
Emergency telephone : [phone] (24 Hours) CHEMTREC
number
Issuing date : 10/02/2017
Section: 2. HAZARDS IDENTIFICATION
GHS Classification
Not a hazardous substance or mixture.
GHS Label element
Precautionary Statements : Prevention:
Wash hands thoroughly after handling.
Response:
Get medical advice/attention if you feel unwell.
Storage:
Store in accordance with local regulations.
Other hazards : None known.
Section: 3. COMPOSITION/INFORMATION ON INGREDIENTS
Pure substance/mixture : Mixture
Chemical Name CAS-No. Concentration: (%)
Ammonium Chloride 12125-02-9 1 -5
Section: 4. FIRST AID MEASURES
In case of eye contact : Rinse with plenty of water. Get medical attention if symptoms occur.
In case of skin contact : Wash off with soap and plenty of water. Get medical attention if symptoms
occur.
If swallowed : Rinse mouth. Get medical attention if symptoms occur.
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'SAFETY DATA SHEET
ULTIMER®7752
If inhaled : Get medical attention if symptoms occur.
Protection of first-aiders : In event of emergency assess the danger before taking action. Do not put
yourself at risk of injury. If in doubt, contact emergency responders. Use
personal protective equipment as required.
Notes to physician : Treat symptomatically.
Most important symptoms : See Section 11 for more detailed information on health effects and symptoms.
and effects, both acute and
delayed
Section: 5. FIREFIGHTING MEASURES
Suitable extinguishing media : Use extinguishing measures that are appropriate to local circumstances and the
surrounding environment.
Unsuitable extinguishing : None known.
media
Specific hazards during : Not flammable or combustible.
firefighting
Hazardous combustion : Decomposition products may include the following materials: Carbon oxides
products nitrogen oxides(NOx) Sulphur oxides ammonia Hydrogen chloride
Special protective equipment : Use personal protective equipment.
for firefighters
Specific extinguishing : Fire residues and contaminated fire extinguishing water must be disposed of in
methods accordance with local regulations.
Section: 6. ACCIDENTAL RELEASE MEASURES
Personal precautions, : Refer to protective measures listed in sections 7 and 8.
protective equipment and
emergency procedures
Environmental precautions : No special environmental precautions required.
Methods and materials for : Stop leak if safe to do so. Contain spillage, and then collect with non-
containment and cleaning up combustible absorbent material, (e.g. sand, earth, diatomaceous earth,
vermiculite) and place in container for disposal according to local/national
regulations (see section 13). For large spills, dike spilled material or otherwise
contain material to ensure runoff does not reach a waterway. Flush away traces
with water.
Section: 7. HANDLING AND STORAGE
Advice on safe handling : For personal protection see section 8. Wash hands after handling.
Conditions for safe storage : Keep out of reach of children. Keep container tightly closed. Store in suitable
labelled containers. Protect product from freezing. Freezing will affect the
physical condition but will not change the material. Thaw and mix before using.
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SAFETY DATA SHEET
ULTIMER®7752
Storage temperature : -10 °C to 40 °C
Suitable material : The following compatibility data is suggested based on similar product data
and/or industry experience: PVC, EPDM, Polyurethane, Polypropylene,
Polyethylene, Neoprene, Buna-N, MDPE, HDPE (high density polyethylene),
Nitrile, Perfluoroelastomer, PTFE, FEP (encapsulated), TFE, Chlorosulfonated
polyethylene rubber, Fluoroelastomer, Compatibility with Plastic Materials can
vary; we therefore recommend that compatibility is tested prior to use.
Unsuitable material : The following compatibility data is suggested based on similar product data
and/or industry experience: Brass, Mild steel, Carbon Steel C1018
Section: 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Components with workplace control parameters
Components CAS-No. Form of exposure Permissible Basis
concentration
Ammonium Chloride 12125-02-9 TWA(Fumes) 10 mg/m3 ACGIH
STEL(Fumes) 20 mg/m3 _ACGIH
TWA(Fumes) 10 mg/m3 _NIOSH REL
STEL(Fumes) 20 mg/m3 NIOSH REL
Engineering measures : Good general ventilation should be sufficient to control worker exposure to
airborne contaminants.
Personal protective equipment
Eye protection : Safety glasses
Hand protection : Wear protective gloves.
Gloves should be discarded and replaced if there is any indication of
degradation or chemical breakthrough.
Skin protection : Wear suitable protective clothing.
Respiratory protection : When workers are facing concentrations above the exposure limit they must use
appropriate certified respirators.
Hygiene measures : Wash hands before breaks and immediately after handling the product.
Section: 9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance : Liquid
Colour : white
Odour : Chlorine
Flash point : > 93.3 °C, Method: ASTM D 93, Pensky-Martens closed cup
pH : 3.0-4.1,(100 %), (25 °C)
Odour Threshold : no data available
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'SAFETY DATA SHEET
ULTIMER®7752
Melting point/freezing point : FREEZING POINT: -10 °C
Initial boiling point and boiling : 100 °C
range
Evaporation rate : no data available
Flammability(solid, gas) : no data available
Upper explosion limit : no data available
Lower explosion limit : no data available
Vapour pressure : 20.6 mm Hg, (37.8 °C),
Relative vapour density : no data available
Relative density : 1.16, (20 °C),
Density : 9.6 lb/gal
Water solubility : dispersible
Solubility in other solvents : no data available
Partition coefficient: n- : no data available
octanol/water
Auto-ignition temperature : no data available
Thermal decomposition : no data available
Viscosity, dynamic : 50-600 mPa.s (25 °C)
Viscosity, kinematic : 300 mm2/s (25°C), estimated
Molecular weight : no data available
VOC : no data available
Section: 10. STABILITY AND REACTIVITY
Chemical stability : Stable under normal conditions.
Possibility of hazardous : No dangerous reaction known under conditions of normal use.
reactions
Conditions to avoid : Freezing temperatures.
Incompatible materials : Contact with strong oxidizers(e.g. chlorine, peroxides, chromates, nitric acid,
perchlorate, concentrated oxygen, permanganate) may generate heat, fires,
explosions and/or toxic vapors.
Contact with strong alkalies (e.g. ammonia and its solutions, carbonates, sodium
hydroxide(caustic), potassium hydroxide, calcium hydroxide(lime), cyanide,
sulfide, hypochlorites, chlorites) may generate heat, splattering or boiling and
toxic vapors.
Hazardous decomposition : Decomposition products may include the following materials:
products Carbon oxides
nitrogen oxides(NOx)
Sulphur oxides
ammonia
Hydrogen chloride
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SAFETY DATA SHEET
ULTIMER® 7752
Section: 11. TOXICOLOGICAL INFORMATION
Information on likely routes of : Inhalation, Eye contact, Skin contact
exposure
Potential Health Effects
Eyes : Health injuries are not known or expected under normal use.
Skin : Health injuries are not known or expected under normal use.
Ingestion : Health injuries are not known or expected under normal use.
Inhalation : Health injuries are not known or expected under normal use.
Chronic Exposure : Health injuries are not known or expected under normal use.
Experience with human exposure
Eye contact : No symptoms known or expected.
Skin contact : No symptoms known or expected.
Ingestion : No symptoms known or expected.
Inhalation : No symptoms known or expected.
Toxicity
Product
Acute oral toxicity : Acute toxicity estimate: > 5,000 mg/kg
Acute inhalation toxicity : no data available
Acute dermal toxicity : no data available
Skin corrosion/irritation : no data available
Serious eye damage/eye : no data available
irritation
Respiratory or skin : no data available
sensitization
Carcinogenicity : no data available
Reproductive effects : no data available
Germ cell mutagenicity : no data available
Teratogenicity : no data available
STOT -single exposure : no data available
STOT - repeated exposure : no data available
Aspiration toxicity : no data available
LSection: 12. ECOLOGICAL INFORMATION
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'SAFETY DATA SHEET
ULTIMER®7752
Ecotoxicity
Environmental Effects : This product has no known ecotoxicological effects.
Product
Toxicity to fish : LC50 Oncorhynchus mykiss(rainbow trout): 2.7 mg/I
Exposure time: 96 hrs
Test substance: Similar Product
Toxicity to daphnia and other : EC50 Daphnia magna(Water flea): 19 mg/I
aquatic invertebrates Exposure time: 48 hrs
Test substance: Similar Product
NOEL Daphnia magna (Water flea): 8.0 mg/I
Exposure time: 48 hrs
Test substance: Similar Product
LC50 Ceriodaphnia dubia(Water flea): 3.48 mg/I
Exposure time: 48 h
Test substance: Product
Test Type: Static
Persistence and degradability
This substance is expected to persist.
Total Organic Carbon (TOC) : 120,000 mg/I
Chemical Oxygen Demand (COD): 241,000 mg/I
Biochemical Oxygen Demand (BOD):
Incubation Period Value Test Descriptor
21,400 mg/I
Mobility
The environmental fate was estimated using a level III fugacity model embedded in the EPI (estimation program
interface) Suite TM, provided by the US EPA. The model assumes a steady state condition between the total input
and output. The level Ill model does not require equilibrium between the defined media. The information provided is
intended to give the user a general estimate of the environmental fate of this product under the defined conditions of
the models.
If released into the environment this material is expected to distribute to the air, water and soil/sediment in the
approximate respective percentages;
Air : <5%
Water : 30-50%
Soil : 50-70%
The portion in water is expected to be soluble or dispersible.
Bioaccumulative potential
This substance is positively charged and is expected to remain primarily bound to soil. This substance is not
expected to bioconcentrate due to its high molecular weight.
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SAFETY DATA SHEET
ULTIMER® 7752
Other information
no data available
Section: 13. DISPOSAL CONSIDERATIONS
If this product becomes a waste, it is not a hazardous waste as defined by the Resource Conservation and Recovery
Act (RCRA) 40 CFR 261, since it does not have the characteristics of Subpart C, nor is it listed under Subpart D.
Disposal methods : Where possible recycling is preferred to disposal or
incineration. If recycling is not practicable, dispose of in
compliance with local regulations. Dispose of wastes in an
approved waste disposal facility.
Disposal considerations : Dispose of as unused product. Empty containers should be
taken to an approved waste handling site for recycling or
disposal. Do not re-use empty containers.
Section: 14. TRANSPORT INFORMATION
The shipper/consignor/sender is responsible to ensure that the packaging, labeling, and markings are in compliance
with the selected mode of transport.
Land transport(DOT)
Proper shipping name : PRODUCT IS NOT REGULATED DURING TRANSPORTATION
Air transport(IATA)
Proper shipping name : PRODUCT IS NOT REGULATED DURING TRANSPORTATION
Sea transport(IMDG/IMO)
Proper shipping name . PRODUCT IS NOT REGULATED DURING TRANSPORTATION
Section: 15. REGULATORY INFORMATION
TSCA list : No substances are subject to a Significant New Use Rule.
No substances are subject to TSCA 12(b) export notification
requirements.
EPCRA - Emergency Planningand CommunityRight-to-Know Act
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CERCLA Reportable Quantity
This material does not contain any components with a CERCLA RQ.
SARA 304 Extremely Hazardous Substances Reportable Quantity
This material does not contain any components with a section 304 EHS RQ.
SARA 311/312 Hazards : No SARA Hazards
SARA 302 : No chemicals in this material are subject to the reporting requirements
of SARA Title III, Section 302.
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' SAFETY DATA SHEET
ULTIMER®7752
SARA 313 : This material does not contain any chemical components with known
CAS numbers that exceed the threshold (De Minimis) reporting levels
established by SARA Title III, Section 313.
California Prop 65
This product does not contain any chemicals known to State of California to cause cancer, birth defects, or any other
reproductive harm.
INTERNATIONAL CHEMICAL CONTROL LAWS :
United States TSCA Inventory
The substances in this preparation are included on or exempted from the TSCA 8(b) Inventory(40 CFR 710)
Australia. Industrial Chemical (Notification and Assessment)Act
All substances in this product comply with the National Industrial Chemicals Notification &Assessment Scheme
(NICNAS).
Canadian Non-Domestic Substances List(NDSL)
This product contains substance(s)which are found on the Non-Domestic Substances List(NDSL).
Japan. ENCS-Existing and New Chemical Substances Inventory
All substances in this product comply with the Law Regulating the Manufacture and Importation Of Chemical
Substances and are listed on the Existing and New Chemical Substances list(ENCS).
Korea. Korean Existing Chemicals Inventory (KECI)
All substances in this product comply with the Chemical Control Act(CCA) and are listed on the Existing Chemicals
List(ECL)
Philippines Inventory of Chemicals and Chemical Substances (PICCS)
All substances in this product comply with the Republic Act 6969 (RA 6969) and are listed on the Philippines
Inventory of Chemicals&Chemical Substances (PICCS).
China Inventory of Existing Chemical Substances
All substances in this product comply with the Provisions on the Environmental Administration of New Chemical
Substances and are listed on or exempt from the Inventory of Existing Chemical Substances China(IECSC).
New Zealand. Inventory of Chemicals (NZIoC), as published by ERMA New Zealand
All substances in this product comply with the Hazardous Substances and New Organisms (HSNO)Act 1996,and
are listed on or are exempt from the New Zealand Inventory of Chemicals.
Taiwan Chemical Substance Inventory
On the inventory, or in compliance with the inventory
Section: 16.OTHER INFORMATION
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SAFETY DATA SHEET
ULTIMER®7752
NFPA: HMIS III:
Flammability
HEALTH 1
1
1 0 a FLAMMABILITY 1
x =
PHYSICAL HAZARD 0
0=not significant, 1 =Slight,
2=Moderate,3=High
Special hazard. 4=Extreme,*=Chronic
Revision Date : 10/02/2017
Version Number : 1.2
Prepared By : Regulatory Affairs
REVISED INFORMATION: Significant changes to regulatory or health information for this revision is indicated by
a bar in the left-hand margin of the SDS.
The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief
at the date of its publication. The information given is designed only as a guidance for safe handling, use,
processing, storage, transportation, disposal and release and is not to be considered a warranty or quality
specification. The information relates only to the specific material designated and may not be valid for such
material used in combination with any other materials or in any process, unless specified in the text.
For additional copies of an SDS visit www.nalco.com and request access.
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