NC0027332_Renewal (Application)_20230301

IVA TENNESSEE
VALLEY
AUTHORITY
1101 Market Street, BR 2C, Chattanooga, Tennessee 37402
February 27, 2023
Division of Water Resources
Water Quality Permitting Section — NPDES
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
To Whom It May Concern:
TENNESSEE VALLEY AUTHORITY (TVA) — CHATUGE HYDRO PLANT (CTH) — NPDES
PERMIT NO. NCO027332 — PERMIT RENEWAL APPLICATION AND WAIVER REQUEST
Enclosed is one signed and two copies of a complete NPDES permit renewal application for
CTH, including EPA Form 1, site map, Form 2C, wastewater flow schematic, and Form 2E.
There have been no changes since the issuance of the last permit.
Waiver Request — Form 2C — Outfall 002
Per Title 40 CFR § 122.21(g)(7)(iv), the Director may waive the reporting requirements for
individual point sources for one or more of the pollutants listed if the applicant can demonstrate
that such a waiver is appropriate because information adequate to support issuance of a permit
can be obtained with less stringent requirements. TVA requests that sampling be waived for
Draft Tube Unwatering Operations (Outfall 002) due to infrequency of discharges and water
composition. Draft Tube Unwatering Operations typically occur only during outages,
approximately every two years, and consists of river water that is unlikely to contain any
contaminants from plant operations. Historically, Outfall 002's infrequent discharges have been
successfully managed through the implementation of Best Management Practices per CTH's
NPDES permit.
TVA requests a 30-day period between the issuance date and the effective date of the renewal
permit to facilitate internal distribution of the permit. If you have questions or would like
additional information, please contact Callan Pierson by email at [e-mail].
Sincerely,
Paul J. Pearman
Senior Manager
Water Permits, Compliance, and Monitoring
Enclosures
RECEIVED
MAR 01 2023
NCDEQ/DWR/NPDES

TVA Chatuge Hydro Plant
NPDES Permit Application
NPDES No. NC0027332
WET INK ORIGINAL

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NC3640006646
NCO027332
TVA Chatuge Hydro Plant (CTH)
OMB No. 2040-0004
Form
U.S. Environmental Protection Agency
1
\'/EPA
Application for NPDES Permit to Discharge Wastewater
NPDES
GENERAL INFORMATION
SECTION•
•I 1
1.1 Applicants Not
Required to Submit Form 1
1.1.1
Is the facility a new or existing publicly owned
1.1.2
Is the facility a new or existing treatment works
treatment works?
treating domestic sewage?
If yes, STOP. Do NOT complete No
If yes, STOP. Do NOT ✓❑ No
Form 1. Complete Form 2A.
complete Form 1. Complete
Form 2S.
1.2
Applicants Required to Submit Form 1
1.2.1
Is the facility a concentrated animal feeding
1.2.2
Is the facility an existing manufacturing,
E
operation or a concentrated aquatic animal
commercial, mining, or silvicultural facility that is
a
production facility?
currently discharging process wastewater?
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Yes 4 Complete Form 1 No
0 Yes 4 Complete Form ❑ No
a
and Form 2B.
1 and Form 2C.
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1.2.3
Is the facility a new manufacturing, commercial,
1.2.4
Is the facility a new or existing manufacturing,
mining, or silvicultural facility that has not yet
commercial, mining, or silvicultural facility that
commenced to discharge?
discharges only nonprocess wastewater?
Cr
Yes 4 Complete Form 1 No
❑✓ Yes 4 Complete Form ❑ No
N
and Form 2D.
1 and Form 2E.
'
1.2.5
Is the facility a new or existing facility whose
'—
discharge is composed entirely of stormwater
a
associated with industrial activity or whose
discharge is composed of both stormwater and
non-stormwater?
❑ Yes 4 Complete Form 1 No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x) or
SECTION
ADDRESS. AND LOCATION
2.1
Facility Name
Tennessee Valley Authority (TVA) Chatuge Hydro Plant
0
2.2
EPA Identification Number
U
C
J
NC3640006646
2.3
Facility Contact
v;
Name (first and last)
Title
Phone number
a
Jacinda B. Woodward
Senior VP, Power Operations
[phone]
XM
Email address
[e-mail]
M
6
2.4
Facility Mailing Address
ZStreet
or P.O. box
1101 Market Street LP 2K-C
City or town
State
ZIP code
Chattanooga
Tennessee
37402
EPA Form 3510-1 (revised 3-19) Page 1

EPA Idenfificabon Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NC3640006646
NCO027332
TVA Chatuge Hydro Plant (CTH)
OMB No. 2040-0004
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2.5
Facility Location
E
Street, route number, or other specific identifier
Q 0
Chatuge Dam Road
rn
0
County name
County code (if known)
Clay
0
E
City or town
State
ZIP code
z A
near Hayesville
North Carolina
28904
SECTION1
NAICS CODES1
3.1
SIC Code(s)
Description (optional)
4911
Electric Services
N
N
0
O
U
N
U
z
3.2
NAICS Code(s)
Description (optional)
c
`O
221111
Hydroelectric Power Generation
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N
4.1
Name of Operator
Tennessee Valley Authority
0
4.2
Is the name you listed in Item 4.1 also the owner?
❑ Yes ❑ No
4.3
Operator Status
❑✓ Public —federal ❑ Public —state ❑ Other public (specify)
o
El ElOther (specify)
4.4
Phone Number of Operator
[phone]
4.5
Operator Address
Street or P.O. Box
M
-0
d
1101 Market Street, LP 2K-C
City or town
State
ZIP code
`O 0
Chattanooga
Tennessee
37402
is
a
Email address of operator
0
[e-mail]
SECTION1
I •1
5.1
Is the facility located on Indian Land?
❑ Yes ❑✓ No
EPA Form 3510-1 (revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) OMB No. 2040-0004
SECTION. EXISTING ENVIRONMENTAL1
6.1 Existing Environmental Permits (check all that apply and print or type the corresponding permit number for each)
d
m NPDES (discharges to surface
❑ RCRA (hazardous wastes)
❑ UIC (underground injection of
water)
fluids)
•
NCO027332
W a
m
❑ PSD (air emissions)
❑ Nonattainment program (CAA)
❑ NESHAPs (CAA)
r=
w
ElOcean dumping (MPRSA) ElDredge or fill (CWA Section 404) ❑ Other (specify)
SECTIONr
7.1
Have you attached a topographic map containing all required information to this application? (See instructions for
C
specific requirements.)
❑✓ Yes ❑ No ❑ CAFO—Not Applicable (See requirements in Form 2B.)
SECTIONOF
8.1
Describe the nature of your business.
Chatuge Hydro Plant is a one unit hydroelectric generating plant on the Hiwassee River with a generating capacity of
,)
14 megawatts.
TVA's conventional hydro plants typically include a dam to control the flow of a river, a powerhouse containing
turbines and generators to make electricity, a switch -yard to step up the electricity's voltage for distribution to
m
customers, and a large reservoir of water behind the dam. Water from the upper reservoir flows through a penstock
impacting the blades of a turbine making the turbine rotate, which is connected by a shaft to a generator consisting
3
of a large rotating electromagnet located in the middle of an even larger set of stationary wire coils in the
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powerhouse. Electricity is produced in the coils and taken by generator leads to the switchyard where the voltage is
increased and put into the TVA transmission system for delivery to distributors. The water used to turn the turbine
then flows out of the powerhouse in a draft tube where it is released into the water supply.
SECTION'
COOLING
WATER INTAKE STRUCTURES (40 '
9.1
Does your facility use cooling water?
d
❑✓ Yes ❑ No 4 SKIP to Item 10.1.
9.2
Identify the source of cooling water. (Note that facilities that use a cooling water intake structure as described at
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40 CFR 125, Subparts I and J may have additional application requirements at 40 CFR 122.21(r). Consult with your
CZ
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NPDES permitting authority to determine what specific information needs to be submitted and when.)
Y
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Cooling water for generator surface air and generator bearing oil cooling systems flows by gravity from the lake into
these systems within the facility. No separate intake exists for cooling water.
SECTION1.
VARIANCE
REQUESTS41 1
10.1
Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)? (Check all that
apply. Consult with your NPDES permitting authority to determine what information needs to be submitted and
y
U)
when.)
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❑ Fundamentally different factors (CWA ❑ Water quality related effluent limitations (CWA Section
d
Section 301(n)) 302(b)(2))
d
❑ Non -conventional pollutants (CWA ❑ Thermal discharges (CWA Section 316(a))
Section 301(c) and (g))
❑✓ Not applicable
EPA Form 3510-1 (revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC3640006646 NC0027332 TVA Chatuge Hydro Plant (CTH) OMB No.2040-0004
SECTION1 CERTIFICATION STATEMENT (40
11.1 In Column 1 below, mark the sections of Form 1 that you have completed and are submitting with your application.
For each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note
that not all applicants are required to provide attachments.
Column 1
Column 2
❑✓ Section 1: Activities Requiring an NPDES Permit
❑ w/ attachments
❑✓ Section 2: Name, Mailing Address, and Location
❑ w/ attachments
❑✓ Section 3: SIC Codes
❑ w/ attachments
❑✓ Section 4: Operator Information
❑ w/ attachments
❑✓ Section 5: Indian Land
❑ w/ attachments
❑✓ Section 6: Existing Environmental Permits
❑ w/ attachments
✓ Section 7: Ma
❑ p
w/ topographic
❑ ❑ w/ additional attachments
map
❑✓ Section 8: Nature of Business
❑ w/ attachments
c
❑✓ Section 9: Cooling Water Intake Structures
❑ w/ attachments
❑✓ Section 10: Variance Requests
❑ w/ attachments
❑✓ Section 11: Checklist and Certification Statement
❑ w/ attachments
11.2
t
v
Certification Statement
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 property 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 fine and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
James D. Evans
Plant Manager, Hydro Generation Hiwassee Plant Group
Signature
Date signed
Fe 6 Kaav 9 , 20 z 3
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EPA Form 3510-1 (revised 3-19) Page 4

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Chatuge Hydro Plant
Outfalls 001 — 003 A&B
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Tennessee Valley Authority
Chatuge Hydro Plant — NCO027332
Sate Grid/Quad: G3SE/Hayesville, NC Drainage Basin: Hiwassee River
Latitude: 350 01' 09" N
Longitude: 830 47' 30" W
Receiving Stream: Hiwassee River
Stream Class: C
N Facility Location
not to scale
NPDES Permit No. N00027332
Cherokee County

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC3640006646 NCO027332 FTVA Chatuge Hydro Plant (CTH) OMB No. 2040-0004
Form U.S. Environmental Protection Agency
2C \r`/EPA Application for NPDES Permit to Discharge Wastewater
NPDES EXISTING MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURE OPERATIONS
SECTIONOUTFALL LOCATION
1.1 Provide information on each of the facility's outfalls in the table below.
OutfalNumber Receiving Water Name Latitude Longitude
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001 Hiwassee River 35* 01' 09" N 83* 47' 30" W
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002 Hiwassee River 35* 01' 09" N 83* 47' 30" W
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SECTION1' 1
M 2.1 Have you attached a line drawing to this application that shows the water flow through your facility with a water
r .3 balance? (See instructions for drawing requirements. See Exhibit 2C-1 at end of instructions for example.)
J R
o ❑✓ Yes ❑ No
SECTION• t
3.1 For each outfall identified under Item 1.1, provide average flow and treatment information. Add additional sheets if
necessary.
**Outfall Number*" 001
Operations
Operation Average Flow
Station sump receives discharges from the Powerhouse 1.44 mgd
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E floor drains, penstock envelope leakage, and wheel pit mgd
is
a�
leakage from Unit 1. mgd
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3 mgd
Treatment Units
U-
o, Description Code fFinal Disposal of Solid or
from (include size, flow rate through each treatment unit, Table from Liquid Wastes Other Than
> retention time, etc.) by Discharge
Oil absorbent pads are used in sumps and points of 4 A Any solids removed from station
equipment oil leaks. sump would be managed as
solid waste and properly
disposed.
EPA Form 3510-2C (Revised 3-19) Page 1

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NC3640006646
NCO027332
TVA Chatuge Hydro Plant (CTH)
OMB No.2040-0004
3.1
**Outfall Number** 002
cont.
Operations
Operation
Average Flow
Unwatering sump from draft tube unwatering operations
7.2 mgd
mgd
mgd
mgd
Treatment
Description
Units
Code from
Final Disposal of Solid or
(include size, flow rate through each treatment unit,
Table 2C-1
Liquid Wastes Other Than
retention time, etc.)
by Discharge
Unwatering sump contains raw river water, discharges
4 A
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to surface water
0
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is
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**Outfall Number** N/A
ns
Operations Contributing
to Flow
o
Operation
Average Flow
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rn
mgd
ca
a
mgd
mgd
mgd
Treatment
Description
Units
Code from
Final Disposal of Solid or
(include size, flow rate through each treatment unit,
Table 2C-1
Liquid Wastes Other Than
retention time, etc.)
by Discharge
3.2
Are you applying for an NPDES permit to operate a privately owned treatment works?
d t
❑ Yes ❑✓ No -+ SKIP to Section 4.
�
3.3
Have you attached a list that identifies each user of the treatment works?
Cn
❑ Yes ❑ No
EPA Form 3510-2C (Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH) OMB No. 2040-0004
SECTION• 1
4.1 Except for storm runoff, leaks, or spills, are any discharges described in Sections 1 and 3 intermittent or seasonal?
0 Yes ❑ No 4 SKIP to Section 5.
4.2
Provide information
on intermittent or seasonal flows for each applicable ouffall.
Attach additional pages, if n cessary.
Outfall
Operation
Freq
uency
Flow
Rate
Average
Average
Long -Term
Maximum
Number
(list)
Duration
Da sMeek
MonthsNear
Average
Dail
Draft tube unwatering
* days/week
* months/year
7.2 mgd
7.2 mgd
* days
4
002
operations
days/week
months/year
mgd
mgd
days
LL
mdays/week
monthstyear
mgd
mgd
days
days/week
monthstyear
mgd
mgd
days
c
days/week
months/year
mgd
mgd
days
days/week
months/year
mgd
mgd
days
days/week
months/year
mgd
mgd
days
days/week
monthstyear
mgd
mgd
days
days/week monthstyear mgd mgd days
SECTION'••1
• 1
5.1
Do any effluent limitation guidelines (ELGs) promulgated by EPA under Section 304 of the CWA apply to your facility?
❑ Yes ❑✓ No 4 SKIP to Section 6.
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5.2
Provide the following information on applicable ELGs.
W
ELG Category
ELG Subcategory
Regulatory Citation
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a
5.3
Are any of the applicable ELGs expressed in terms of production (or other measure of operation)?
U
❑ Yes ❑✓ No 4 SKIP to Section 6.
0
5.4
Provide an actual measure of daily production expressed in terms and units of applicable ELGs.
Outfall
Operation, Product, or Material
Quantity per Day
Unit of
Number
Measure
4)
h
N
m
C
O
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t,1
7
1�
O
a
*Unwatering operations for the draft tubes for Outfall 002 are intermittent and typically occur approximately once every two
years. Duration is dependent on the duration of the unit outages.
EPA Form 3510-2C (Revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) OMB No. 2040-0004
SECTION. IMPROVEMENTS (40
6.1 Are you presently required by any federal, state, or local authority to meet an implementation schedule for constructing,
upgrading, or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes ❑✓ No 4 SKIP to Item 6.3.
6.2
Briefly identify each applicable project in the table below.
Affected
Final Compliance Dates
E
Brief Identification and Description of
Outfalls
Source(s) of
o
Project
(list outfall
Discharge
Required
Projected
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number
E
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v
ns
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6.3
Have you attached sheets describing any additional water pollution control programs (or other environmental projects
that may affect your discharges) that you now have underway or planned? (optional item)
❑ Yes ❑ No Not applicable
SECTIONr
See the instructions to determine the pollutants and parameters you are required to monitor and, in turn, the tables you must
complete. Not all applicants need to complete each table.
Table A. Conventional and Non -Conventional Pollutants
7.1
Are you requesting a waiver from your NPDES permitting authority for one or more of the Table A pollutants for any of
your outfalls?
0 Yes ❑ No 4 SKIP to Item 7.3.
7.2
If yes, indicate the applicable outfalls below. Attach waiver request and other required information to the application.
Outfall Number 002 Outfall Number Outfall Number
7.3
Have you completed monitoring for all Table A pollutants at each of your outfalls for which a waiver has not been
y
requested and attached the results to this application package?
❑✓ Yes ❑ No; a waiver has been requested from my NPDES
ns
permitting authority for all pollutants at all outfalls.
Table B.
Toxic Metals, Cyanide, Total Phenols, and Organic Toxic Pollutants
7.4
Do any of the facility's processes that contribute wastewater fall into one or more of the primary industry categories
listed in Exhibit 2C-3? (See end of instructions for exhibit.)
❑ Yes ❑✓ No + SKIP to Item 7.8.
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7.5
Have you checked "Testing Required" for all toxic metals, cyanide, and total phenols in Section 1 of Table B?
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El Yes ❑ No
7.6
List the applicable primary industry categories and check the boxes indicating the required GC/MS fraction(s) identified
in Exhibit 2C-3.
Primary Industry Category
Required GC/MS Fraction(s)
Check applicable boxes.
❑ Volatile ❑ Acid ❑ Base/Neutral ❑ Pesticide
❑ Volatile ❑ Acid ❑ Base/Neutral ❑ Pesticide
❑ Volatile ❑ Acid ❑ Base/Neutral ❑ Pesticide
EPA Form 3510-2C (Revised 3-19) Page 4

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NC3640006646
NCO027332
NA Chatuge Hydro Plant (CTH)
OMB No. 2040-0004
7.7
Have you checked "Testing Required" for all required pollutants in Sections 2 through 5 of Table B for each of the
GC/MS fractions checked in Item 7.6?
❑ Yes ❑ No
7.8
Have you checked "Believed Present" or "Believed Absent' for all pollutants listed in Sections 1 through 5 of Table B
where testing is not required?
Q Yes ❑ No
7.9
Have you provided (1) quantitative data for those Section 1, Table B, pollutants for which you have indicated testing is
required or (2) quantitative data or other required information for those Section 1, Table B, pollutants that you have
indicated are "Believed Present" in your discharge?
Q Yes ❑ No
7.10
Does the applicant qualify for a small business exemption under the criteria specified in the instructions?
❑ Yes 4 Note that you qualify at the top of Table B, Q No
then SKIP to Item 7.12.
7.11
Have you provided (1) quantitative data for those Sections 2 through 5, Table B, pollutants for which you have
c
determined testing is required or (2) quantitative data or an explanation for those Sections 2 through 5, Table B,
pollutants you have indicated are "Believed Present" in your discharge?
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❑ Yes Q No
0
Table C. Certain Conventional and Non -Conventional Pollutants
7.12
Have you indicated whether pollutants are "Believed Present" or "Believed Absent" for all pollutants listed on Table C
for all outfalls?
Q Yes ❑ No
c
7.13
Have you completed Table C by providing (1) quantitative data for those pollutants that are limited either directly or
indirectly in an ELG and/or (2) quantitative data or an explanation for those pollutants for which you have indicated
"Believed Present"?
c
Q Yes ❑ No
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Table D.
Certain Hazardous Substances and Asbestos
7.14
Have you indicated whether pollutants are "Believed Present" or "Believed Absent" for all pollutants listed in Table D for
all outfalls?
✓❑ Yes ❑ No
7.15
Have you completed Table D by (1) describing the reasons the applicable pollutants are expected to be discharged
and (2) by providing quantitative data, if available?
❑ Yes ❑✓ No
Table E. 2,3 7,8-Tetrachlorodibenzo- Dioxin 2,3,7,8-TCDD
7.16
Does the facility use or manufacture one or more of the 2,3,7,8-TCDD congeners listed in the instructions, or do you
know or have reason to believe that TCDD is or may be present in the effluent?
❑ Yes 4 Complete Table E. Q No 4 SKIP to Section 8.
7.17
Have you completed Table E by reporting qualitative data for TCDD?
❑ Yes ❑ No
SECTIONOR
MANUFACTURED TOXICS
8.1
Is any pollutant listed in Table B a substance or a component of a substance used or manufactured at your facility as
an intermediate or final product or byproduct?
❑ Yes Q No 4 SKIP to Section 9.
8.2
List the pollutants below.
1. 4. 7.
0
d
tq
2. 5. 8.
3. 6. 9.
EPA Form 3510-2C (Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) OMB No. 2040-0004
SECTIO N ' BIOLOGICAL T• •
9.1 Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made
within the last three years on (1) any of your discharges or (2) on a receiving water in relation to your discharge?
❑ Yes No 4 SKIP to Section 10.
H
9.2
Identify the tests and their
Durposes below.
.5
Test(s)
Purpose of Test(s)
Submitted to NPDES
Date Submitted
x
PermittingAuthority?
o
--
m
❑ Yes ❑ No
U
O
O
M
❑ Yes ❑ No
❑ Yes ❑ No
SECTIONr
CONTRACT
ANALYSES (40
10.1
Were any of the analyses reported in Section 7 performed by a contract laboratory or consulting firm?
❑✓ Yes ❑ No 4 SKIP to Section 11.
10.2
Provide information for each contract laboratory or consulting
firm below.
Laboratory Number 1
Laboratory Number 2
Laboratory Number 3
Name of laboratory/firm
Pace National Center for
Earth Environmental Services
Testing and Innovation
(certification #352)
(certification #375)
m
;,
Laboratory address
12065 Lebanon Road
75 Bison Lane
M
c
a
Mount Juliet, TN 37122
Murphy, NC 28906
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ca
C
0
Phone number
[phone]
[phone]
Pollutant(s) analyzed
All parameters excluding
Field parameters -
field parameters.
temperature, pH
SECTIONDD
• •• •
Has the NPDES permitting authority requested additional information?
11.1
❑ Yes No 4 SKIP to Section 12.
0
E
11.2
List the information requested and attach it to this application.
0
1. 4.
c
0
Al-
2. 5.
a
3. 6.
EPA Form 3510-2C (Revised 3-19) Page 6

EPA Idenfification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH) OMB No. 2040-0004
SECTION• CERTIFICATION STATEMENT (40
12.1 In Column 1 below, mark the sections of Form 2C that you have completed and are submitting with your application.
For each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note
that not all applicants are required to complete all sections or provide attachments.
Column 1
Column 2
❑� Section 1: Outfall Location
❑ w/ attachments
❑� Section 2: Line Drawing
❑✓ w/ line drawing ❑ w/ additional attachments
Section 3: Average Flows and
0
w/ list of each user of
❑ w/ attachments ❑ privately owned treatment
Treatment
works
❑✓ Section 4: Intermittent Flows
❑ w/ attachments
❑� Section 5: Production
❑ w/ attachments
w/ optional additional
❑/ Section 6: Improvements
❑ w/ attachments ❑ sheets describing any
additional pollution control
tans
❑ w/ request for a waiver and ❑ w/ explanation for identical
supporting information outfalls
m
w/ small business exemption
❑ ❑ w/ other attachments
request
y
❑ Section 7: Effluent and Intake
❑ w/ Table A ❑✓ w/ Table B
c
Characteristics
0
❑✓ w/ Table C Q w/ Table D
it
❑� w/ Table E ❑ w/ analytical results as an
C3
attachment
c
a
Section 8: Used or Manufactured
❑
❑ w/ attachments
Toxics
❑ Section 9: Biological Toxicity
❑ w/ attachments
Tests
c�
Q Section 10: Contract Analyses
❑ w/ attachments
❑ Section 11: Additional Information
❑ w/ attachments
Section 12: Checklist and
❑ wl attachments
Certification Statement
12.2
Certification Statement
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 fine and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
James D. Evans
Plant Manager, Hydro Gen Hiwassee Plant
ignature
Date signed
u 4YY 1/ 2 o z
EPA Form 3510-2C (Revised 3-19) Page 7

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH) 001 OMB No. 2040-0004
Effluent Intake
W81Vef 0 tional
Pollutant Requested Units Maximum Maximum Long -Term
(specify) Daily Monthly Average Daily Number of Long -Term Number of
(if applicable)
Discharge Discharge Discharge Analyses Average Value Analyses
(required) if available if available
❑
Check here if you have applied to your NPDES permitting authority
for a waiver for all of the pollutants listed on this table for the noted outfall.
1'
Biochemical oxygen demand
❑
Concentration
mg/l
4.22•
1
Mass
(BOD5)
2'
Chemical oxygen demand
El
Concentration
mg/l
<20.0
1
(COD)
Mass
Concentration
mg/l
<1.00
1
3.
Total organic carbon (TOC)
❑
Mass
Concentration
mg/l
<2.50
1
4.
Total suspended solids (TSS)
❑
Mass
Concentration
mg/l
<0.250
1
5.
Ammonia (as N)
❑
Mass
6.
Flow
❑
Rate
MGD
0.36
1
Temperature (winter)
❑
°C
°C
12
1
7.
Temperature (summer)
❑
°C
°C
pH (minimum)
❑
Standard units
S.U.
6.6
1
8.
pH (maximum)
❑
Standard units
I S.U.
6.6
1
Samolino shall be conducted according
to sufficiently sensitive test Drocedures (i.e.. methods) aDDroved under 40 CFR
136 for the analvsis of Dollutants or nollutant parameters
or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
`The sample dilutions set-up for the BOD/CBOD analysis did not meet the oxygen depletion criteria of at least 2 mg/L. Reported result is an estimated value.
EPA Form 3510-2C (Revised 3-19) Page 9

EPA Identification Number NPDES Permit Number Facility Name
Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH)
001 OMB No. 2040-0004
: • • • • • •' • '• 1TRY
Presence or Absence
Intake
check one
Effluent (optional)
Poll
Pollutant/Parameter Testing Units
Maximum
Maximum
Long -Term
Lon
(and CAS Number,' available) Re wired Believed Believed ()
Daily
Monthly
Average
Number
Term
Number
Present Absent
Discharge
Discharge
AVa
Of
available)
Discharge
Analyses
uee
Analyses
rf available
EI Check here if you qualify as a small business per the instructions to Form 2C and, therefore, do not need to submit quantitative data for any of the organic toxic pollutants in Sections
2 through 5 of this table. Note, however, that you must still indicate in the appropriate column of this table if you believe any of the pollutants listed are present in your discharge.
Section 1. Toxic Metals, Cyanide, and Total Phenols
1.1
Antimony, total
Concentration
Mass
(7440-36-0)
1.2
Arsenic, total
Concentration
Mass
(7440-38-2)
1.3
Beryllium, total
Concentration
Mass
(744041-7)
1.4
Cadmium, total
El
0
Concentration
Mass
(7440-43-9)
1.5
Chromium, total
O
Concentration
Mass
(744047-3)
1.6
Copper, total
Concentration
Mass
(7440-50-8)
1.7
Lead total
Concentration
Mass
(7439-92-1)
1.8
Mercury, total
El
11
El
Concentration
Mass
(7439-97-6)
1'9
Nickel, total
El
El
El
Concentration
Mass
(7440-02-0)
1.10
Selenium, total
Concentration
Mass
(778249-2)
1.11
Silver, total
Concentration
Mass
(7440-22-4)
EPA Form 3510-2C (Revised 3-19) Page 11

EPA Identification Number
NC3640006646
)ES Permit Number
NCO027332
Facility
TVA Chatuge Hydro Plant (CTH)
Outfall Number
001
Form Approved 03/05/19
OMB No. 2040-0004
Presence or Absence
Intake
check one
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long -
11.12
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
of
Average
of
(required)
(if available)
Discharge
Analyses
Analyses
if available)Value
Thallium, total
El
0
Concentration
Mass
(7440-28-0)El
1.13
Zinc, total
Concentration
Mass
(7440-66-6)
1.14
Cyanide, total
El
11
0
Concentration
Mass
(57-12-5)
1.15
Phenols, total
Concentration
Mass
Section 2.Organic Toxic Pollutants (GCIMS
Fraction
—Volatile Compounds)
2.1
Acrolein
Concentration
Mass
(107-02-8)
2.2
Acrylonitrile
❑
❑
✓❑
Concentration
Mass
(107-13-1)
2.3
Benzene
El
11
❑✓
Concentration
Mass
(71-43-2)
2.4
Bromoform
0Concentration
Mass
(75-25-2)
2.5
Carbon tetrachloride
❑
❑
❑✓
Concentration
Mass
(56-23-5)
2.6
Chlorobenzene
El
El
0
Concentration
Mass
(108-90-7)
2.7
Chlorodibromomethane
Concentration
Mass
(124-48-1)
2.8
Chloroethane
Concentration
Mass
(75-00-3)
EPA Form 3510-2C (Revised 3-19) Page 12

k Identification Number NPDES Permit Nu
NC3640006646 I NCO027332
Name
NA Chatuge Hydro Plant (CTH)
Outtall Number
001
Form Approved 03/05/19
OMB No. 2040-0004
1
meter
available )
7chloroethylvinyl
•
Testing
Re uired
q
Presence or Absence
check one
Units
()Daity
Effluent
Intake
(optional)
Believed
Present
Believed
AbsentDischarge
Maximum
(required)
Maximum
Monthly
Discharge
(if available)
Long-Terref
Average
Dichar a
if availablge
Number
Analyses
Long-
Term
Average
Value
Number
Analyses
her
El
121
Concentration2'9
Mass
2.10
Chloroform (67-66-3)
11
El
Q
Concentration
Mass
211
Dichlorobromomethane
(75-27-4)
El
El
0
Concentration
Mass
2.12
1,1-dichloroethane
(75-34-3)
El
El
0
Concentration
Mass
2.13
12-dichloroethane
(107-06-2)
Concentration
Mass
214
11-dichloroethylene
(75-354)
11
El
21
Concentration
Mass
2.15
12-dichloropropane
(78-87-5)
Concentration
Mass
216
1,3-dichloropropylene
(542-75-6)
❑
❑
❑✓
Concentration
Mass
217
Ethylbenzene
(100414)
Concentration
Mass
2.18
Methyl bromide
(74-83-9)
❑
❑
✓❑
Concentration
Mass
219
Methyl chloride
(74-87-3)
Concentration
Mass
2.20
Methylene chloride
(75-09-2)
Concentration
Mass
2.21
1 1,2,2- tetrachloroethane
(79-34-5)
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 13

EPA Identification Number NPDES Permit Number Facility Name
Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH)
001 OMB No. 2040-0004
• • • • • •' • '• 1
Presence or Absence
check one
Intake
Effluent Intake
(Int
Poll utant/Parameter Testing Units
Maximum
Maximum
Long -Term
Lon
(and CAS Number, if available) Required Believed Believed (specify)
Daily
Monthly
Average
Number
Term
Number
Present Absent
Discharge
Discharge
Dail
of
Average
of
(required)
(if available)
Discharge
Analyses
Value
Analyses
f available
2 22
Tetrachloroethylene
Concentration
Mass
(127-18-4)
2.23
Toluene
Concentration
Mass
(108-88-3)
2.24
1 2-trans-dichloroethylene
❑
F2
Concentration
Mass
(156-60-5)
2.25
1 1,1-tdchloroethane
❑
❑
ID
Concentration
Mass
(71-55-6)
2.26
1 1,2-tdchloroethane
❑
El
❑
Concentration
Mass
(79-00-5)
2.27
Trichloroethylene
El
❑✓
Concentration
Mass
(79-01-6)
2.28
Vinyl chloride
❑
Q
Concentration
Mass
(75-01-4)
Section 3.Organic Toxic Pollutants GC/MS
Fraction
—Acid Compounds
3.1
2-chlorophenol
❑
❑
❑✓
Concentration
Mass
(95-57-8)
3.2
2 4-dichlorophenol
El
El❑
Concentration
Mass
(120-83-2)
3.3
2,4-dimethylphenol
Concentration
Mass
(105-67-9)
3.4
4 6-dinitro-o-cresol
Concentration
Mass
(534-52-1)
3.5
2 4-dinitrophenol
El
❑
Concentration
1Mass
(51-28-5)
EPA Form 3510-2C (Revised 3-19) Page 14

EPA Identification Number NPDES Permit Number Facility Name
Outfall Number Form Approved 03/0519
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH)
001 OMB No. 2040-0004
Presence or Absence
check one
Effluent Intake
(optional)
Pollutant/Parameter Testing Units
Maximum
Maximum
Long -Term
Long
(and CAS Number, if available) Required Believed Believed sea
q (specify)
Daily
Monthly
Average
Number
Term
Number
Present Absent
Discharge
Discharge
of
Average
(required)
(if available)
DisDcharge
Analyses
Value
Analyses
if available
3.6
2-nitrophenol
El
El❑
Concentration
Mass
(88-75-5)
3.7
4-nitrophenol
El
El
Concentration
Mass
(100-02-7)
3.8
p-chloro-m-cresol
❑
❑
Concentration
Mass
(59-50-7)
3'9
Pentachlorophenol
El❑
Concentration
Mass
(87-86-5)
3.10
Phenol
Concentration
Mass
(108-95-2)
3.11
2,4,6-trichlorophenol
El
El
M
Concentration
Mass
(88-05-2)
Section 4.Organic Toxic Pollutants GC/MS Fraction
—Base /Neutral
Compounds
4.1
Acenaphthene
Concentration
Mass
(83-32-9)
4.2
Acenaphthylene
El
El
IZI
Concentration
Mass
(208-96-8)
4.3
Anthracene
Concentration
Mass
(120-12-7)
4.4
Benzidine
El
El
Concentration
Mass
(92-87-5)
4.5
Benzo (a) anthracene
IZI
Concentration
Mass
(56-55-3)
4.6
Benzo (a) pyrene
Concentration
(50-32-8) 1
1
1
1Mass
EPA Form 3510-2C (Revised 3-19) Page 15

Identification Number NPDES Permit Number Facility Name Outfall Nu
NC364O0O6646 NCO027332 TVA Chatuge Hydro Plant (CTH) 001
Form Approved 03/05/19
OMB No. 2040-0004
Pollutant/Parameter
(and CAS Number, if available )
1
Testing
Required
q
Presence or Absence
check one
Units
(p ry)
(specify)
Effluent
Intake
(optional)
Believed
Present
Believed
Absent
Maximum
Daily
Discharge
Maximum
Monthly
Discharge
f available)
Long -Term
Average
aily
Discharge
if available
Number
of
Analyses
Long-
Term
Average
Number
of
Analyses
4.7
3 4-benzofluoranthene
(205-99-2)
✓
Concentration
Mass
4.8
Benzo (ghi) perylene
(191-24-2)
Concentration
Mass
4.9
Benzo (k) fluoranthene
(207-08-9)
El
1:1
✓
Concentration
Mass
4.10
Bis (2-chloroethoxy) methane
(111-91-1)
❑
11
❑✓
Concentration
Mass
4.11
Bis (2-chloroethyl) ether
(111-44-4)
Concentration
Mass
4.12
Bis (2-chloroisopropyl) ether
(102-80-1)
El
❑
❑✓
Concentration
Mass
4.13
Bis (2-ethylhexyl) phthalate
(117-81-7)
Concentration
Mass
4.14
4-bromophenyl phenyl ether
(101-55-3)
❑
❑
1✓
Concentration
Mass
4.15
Butyl benzyl phthalate
(85-68-7)
Concentration
Mass
4.16
2-chloronaphthalene
(91-58-7)
Concentration
Mass
4.17
4-chlorophenyl phenyl ether
(7005-72-3)
✓
Concentration
Mass
4.18
Chrysene
(218-01-9)
El
Concentration
Mass
4.19
Dibenzo (a,h) anthracene
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 16

k ioentficabon Number NPDES Permit Number Facility Name Outfall Number
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) 001
Form Approved 03/05/19
OMB No. 2040-0004
• •
•=1111
� •• ,
• •• 1
Presence or Absence
Intake
check one
Effluent
(optional)
Poll utant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long-
(and CAS Number, if available )
Re wired
q
Believed
Believed
(Specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
of
AVa
of
available)
Discharge
Analyses
uee
Analyses
rf available
4.20
1,2-dichlorobenzene
Concentration
Mass
(95-50-1)
4.21
1,3-dichlorobenzene
❑
❑❑
Concentration
Mass
(541-73-1)
4.22
1,4-dichlorobenzene
❑
✓❑
Concentration
Mass
(106-46-7)
4.23
3,3-dichlorobenzidine
Concentration
Mass
(91-94-1)
4.24
Diethyl phthalate
❑
©
Concentration
Mass
(84-66-2)
4.25
Dimethyl phthalate
❑
El
©
Concentration
Mass
(131-11-3)
4.26
Di-n-butyl phthalate
❑
❑
©
Concentration
Mass
(84-74-2)
4.27
2,4-dinitrotoluene
©
Concentration
Mass
(121-14-2)
4.28
2 6-dinitrotoluene
❑
❑
✓❑
Concentration
Mass
(606-20-2)
4.29
Di-n-octyl phthalate
Concentration
Mass
(117-84-0)
4.30
1,2-Diphenylhydrazine
El
El
21
Concentration
Mass
(as azobenzene) (122-66-7)
4.31
Fluoranthene
Concentration
Mass
(206-44-0)
4.32
Fluorene
❑
El
✓0
Concentration
(86-73-7)
1
1Mass
EPA Form 3510-2C (Revised 3-19) Page 17

EPA Identification Number NPDES Permit Number Facility Name
Outfall Number Form Approved 03105/19
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH)
001 OMB No. 2040-0004
: • I • • I •' • '• 1
Presence or Absence
check one
Effluent Intake
(optional)
Pollutant/Parameter Testing Units
Maximum
Maximum
Long -Term
Long-
(and CAS Number, if available) Required Believed Believed (specify)
Daily
Monthly
Average
Number
Term
Number
Present Absent
D
hrerdge
Discharge
aily
of
Average
of
( eq
availabllee)
DisDcharge
Analyses
Analyses
f available
4.33
Hexachlorobenzene
El
1:1
El
Concentration
Mass
(118-74-1)
4.34
Hexachlorobutadiene
El
❑
❑✓
Concentration
Mass
(87-68-3)
4.35
Hexachlorocyclopentadiene
❑
❑
❑✓
Concentration
1 Mass
(77-474)
4.36
Hexachloroethane
❑
El
a
Concentration
Mass
(67-72-1)
4.37
Indeno (1,2,3-cd) pyrene
Concentration
Mass
(193-39-5)
4.38
Isophorone
❑
11❑
Concentration
Mass
(78-59-1)
4.39
Naphthalene
Concentration
Mass
(91-20-3)
4.40
Nitrobenzene
Concentration
Mass
(98-95-3)
4.41
N-nitrosodimethylamine
Concentration
Mass
(62-75-9)
4.42
N-nitrosodi-n-propylamine
❑
❑
❑�
Concentration
Mass
(621-64-7)
4.43
N-nitrosodiphenylamine
El
El
Concentration
Mass
(86-30-6)
4.44
Phenanthrene
❑
❑
❑
Concentration
Mass
(85-01-8)
4.45
Pyrene
❑
❑
❑
Concentration
Mass
(129-00-0)
EPA Form 3510-2C (Revised 3-19) Page 18

EPA Identification Number NPDES Permit Number Facility Name
Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH)
001 OMB No.2040-0004
Presence or Absence
Intake
check one
Effluent
(optional)
Poll utant/Parameter Testing Units
Maximum
Maximum
Long -Term
Long -
(and CAS Number, if available) Required Believed Believed
land ()
Daily
Monthly
Average
Number
Term
Number
Present Absent
Discharge
Discharge
Daily
of
Average
of
(required)
(if available)
Discharge
g
Analyses
Value
Analyses
f available
4.46 1,2,4-thchlorobenzene
❑
❑
F/
Concentration
Mass
(120-82-1)
Section 5.Organic Toxic Pollutants (GCIMS Fraction
—Pesticides)
5.1
Aldrin
El
El
121
Concentration
Mass
(309-00-2)
5.2
a-BHC
Concentration
Mass
(319-84-6)
5.3
R-BHC
Concentration
Mass
(319-85-7)
5.4
y-BHC
Concentration
Mass
(58-89-9)
5.5
S-BHC
Concentration
Mass
(319-86-8)
5.6
Chlordane
❑
❑
❑✓
Concentration
Mass
(57-74-9)
5.7
4,4'-DDT
El
❑
✓❑
Concentration
Mass
(50-29-3)
5.8
4 4'-DDE
1(72-55-9)
❑
✓❑
Concentration
Mass
5.9
4 4'-DDD
�(72-54-8)
Concentration
Mass
5.10
Dieldrin
Concentration
Mass
(60-57-1)
5.11
°-endosulfan
El
11
El
Concentration
Mass
(115-29-7)
EPA Form 3510-2C (Revised 3-19) Page 19

EPA Identification Number NPDES Permit Number Facility Name
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH)
C • • • I • MEAN • ' • 1
Presence or Absence
check one
Pollutant/Parameter Testing Units
(and CAS Number, if available) Required Believed Believed (specify)
Present Absent
Outfall Number Form Approved 03/05/19
001 OMB No. 2040-0004
Effluent Intake
(optional)
Maximum
Daily
Discharge
(required)
Maximum
Monthly
Discharge
(if available)
Long -Term
Average
DisDaily
charge
f available
Number
of
Analyses
Long -
Termof
Average
Value
Number
Analyses
5.12
R-endosulfan
(115-29-7)
❑❑
Concentration
Mass
5.13
Endosulfan sulfate
(1031-07-8)
Concentration
Mass
5.14
Endrin
(72-20-8)
El
IZI
Concentration
Mass
5.15
Endrin aldehyde
(7421-93-4)
Concentration
Mass
5.16
Heptachlor
(76-44-8)
❑
El❑
Concentration
Mass
5.17
Heptachlor epoxide
(1024-57-3)
Concentration
Mass
5.18
PCB-1242
(53469-21-9)
El
ElIZI
Concentration
Mass
5.19
PCB-1254
(11097-69-1)
ElIZI
Concentration
Mass
5.20
PCB-1221
(11104-28-2)
Concentration
Mass
5.21
PCB-1232
(11141-16-5)
Concentration
Mass
5.22
PCB-1248
(12672-29-6)
❑
❑
0
Concentration
Mass
5.23
PCB-1260
(11096-82-5)
Concentration
Mass
5.24
PCB-1016
(12674-11-2)
Concentration
Mass
EPA Forth 3510-2C (Revised 3-19) Page 20

EPA Identification Number
NPDES Permit Number
Facility Name
Outfall Number
Form Approved 03/05/19
NC3640006646
NCO027332 NA
Chatuge Hydro Plant (CTH)
001
OMB No. 2040-0004
: •91 Ill=•
1 • • •' •0 1 [a 181,4111111112614
KIM F-11011
Presence or Absence
check one
Effluent
Intake
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long-
(and CAS Number, if available )
Required Believed Believed
q
(spedty)
Daily
Monthly
Average
Number
Term
Number
Present Absent
Discharge
Discharge
of
Availy
erage
of
(required)
(if available)
Discharge a
le
Analyses
Value
Analyses
if available
Concentration
�Toxaphene
5.25 (8001-35-2)
El
0❑
Mass
1 Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C (Revised 3-19) Page 21

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Forth Approved 03I05119
NC364OOO6646 NCOO27332 TVA Chatuge Hydro Plant (CTH) 001 OMB No. 2040-0004
Presence or Absence Intake
check one Effluent (Optional)
Pollutant Units Maximum Long -Term
Believed Believed (spedfy) Maximum Daily Long -Term
Monthly Average Daily Number of Number of
7(required)
Present Absent Discharge Average
Discharge Discharge Analyses Analyses
if available if available)Value
❑ Check here if you believe all pollutants on Table C to be present in your discharge from the noted outfall. You need not complete the "Presence or Absence" column of Table C for
each pollutant.
❑ Check here if you believe all pollutants on Table C to be absent in your discharge from the noted outfall. You need not complete the "Presence or Absence" column of Table C for
each pollutant.
1
Bromide
❑
❑✓
Concentration
Mass
(24959-67-9)
2'
Chlorine, total
❑
✓
❑
Concentration
Mass
residual
3.
Color
El
Concentration
Mass
4.
Fecal coliform
❑
❑✓
Concentration
Mass
5
Fluoride
❑
❑
Concentration
Mass
(16984-48-8)
6
Nitrate -nitrite
El
El
Concentration
Mass
7'
Nitrogen, total
❑
❑
Concentration
Mass
organic (as N)
8.
Oil and grease
❑✓
El
Concentration
mg/l
<5.75
4
Mass
9'
Phosphorus (as
❑
✓
❑
Concentration
Mass
P), total (7723-14-0)
10.
Sulfate (as SO4)
❑
✓
❑
Concentration
Mass
(14808-79-8)
11.
Sulfide (as S)
❑
❑✓
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 23

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH) 001 OMB No. 2040-0004
life] a 'M 1
Presence or Absence
Intake
check one Effluent
(Optional)
Pollutant Units Maximum Long -Term
Believed Believed (specify) Maximum Daily Long -Term
Present Absent Discharge Monthly Average Daily Number of Average Number of
(required) Discharge Discharge Analyses Analyses
Value
f available if available
12
Sulfite (as S03)
El
❑✓
Concentration
Mass
(14265-45-3)
13.
Surfactants
El
�
Concentration
Mass
14
Aluminum, total
Concentration
Mass
(7429-90-5)
15.
Barium, total
Ei
❑
Concentration
Mass
(7440-39-3)
16
Boron total
❑
❑✓
Concentration
Mass
(744042-8)
17.
Cobalt, total
El
0
Concentration
Mass
(744048-4)
18
Iron total
❑
❑�
Concentration
Mass
(7439-89-6)
g'
Magnesium, total
Concentration
Mass
(7439-95-4)
Molybdenum,
Concentration
20.
total
7439-98-7
Mass
21
Manganese, total
Concentration
Mass
(7439-96-5)
22.
Tin, total
El
Concentration
Mass
(7440-31-5)
23
Titanium, total
Concentration
Mass
(7440-32-6)
EPA Form 3510-2C (Revised 3-19) Page 24

EPA Identification Number
NPDES Permit Number
Facility Name
Outfall Number
Form Approved 03/05/19
NC364OOO6646
NCO027332
TVA Chatuge Hydro Plant (CTH) 001
OMB No. 2040-0004
Presence or Absence
Intake
check one
Effluent
(Optional)
Pollutant
Believed
Believed
Units
(specify)
Maximum Daily
Maximum Long -Term
Monthly Average Daily Number of
Long -Term
� Number of
Present
Absent
Discharge
Discharge Discharge Analyses
Average
Analyses
(required)
f available if available
Value
24.
Radioactivity
Alpha, total
❑
❑✓
Concentration
-
Mass
Beta, total
El
Concentration
Mass
Radium, total
El
❑✓
Concentration
Mass
Radium 226, total
El
Concentration
Mass
I Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Forth 3510-2C (Revised 3-19) Page 25

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) 001 OMB No.2040-0004
: 1 1 0, 1
Presence or Absence
Pollutant check one Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
1. Asbestos
❑
❑✓
2. Acetaldehyde
❑
❑✓
3. Allyl alcohol
❑
❑✓
4. Allyl chloride
❑
✓❑
5. Amyl acetate
❑
❑✓
6. Aniline
❑
❑✓
7. Benzonitrile
❑
❑✓
8. Benzyl chloride
❑
❑✓
9. Butyl acetate
❑
❑✓
10. Butylamine
❑
❑�
11. Captan
❑
❑✓
12. Carbaryl
❑
❑�
13. Carbofuran
❑❑
14. Carbon disulfide
❑
❑✓
15. Chlorpyrifos
❑
❑✓
16. Coumaphos
❑
❑✓
17. Cresol
❑
❑✓
18. Crotonaldehyde
❑
Q
19. Cyclohexane
❑
❑✓
EPA Form 3510-2C (Revised 3-19) Page 27

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC364O0O6646 NC0O27332 TVA Chatuge Hydro Plant (CTH) 001 OMB No. 2040-0004
Presence or Absence
Pollutant check one Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
20.
2,4-D (2,4-dichlorophenoxyacetic acid)
❑
❑✓
21.
Diazinon
❑
❑✓
22.
Dicamba
❑
❑✓
23.
Dichlobenil
❑
❑✓
24.
Dichlone
❑
❑✓
25.
2,2-dichloropropionic acid
❑
❑✓
26.
Dichlorvos
❑
❑✓
27.
Diethyl amine
❑
❑✓
28.
Dimethyl amine
❑
❑✓
29.
Dintrobenzene
❑
❑✓
30.
Diquat
❑
❑✓
31.
Disulfoton
❑
IZI
32.
Diuron
❑
❑✓
33.
Epichlorohydrin
❑
❑✓
34.
Ethion
❑
❑�
35.
Ethylene diamine
❑
❑✓
36.
Ethylene dibromide
❑
❑✓
37.
Formaldehyde
❑
❑✓
38.
Furfural
❑
❑✓
EPA Form 3510-2C (Revised 3-19) Page 28

EPA Identification Number NPDES Permit Number Fadlity Name Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 NA Chatuge Hydro Plant (CTH) 001 OMB No. 2040-0004
.•�� • 1
Presence or Absence
Pollutant check one Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge
(specify units)
Present Absent
39.
Guthion
❑
❑✓
40.
Isoprene
❑
❑�
41.
Isopropanolamine
❑
❑✓
42.
Kelthane
❑
❑✓
43.
Kepone
❑
❑✓
44.
Malathion
❑
❑✓
45.
Mercaptodimethur
❑
❑✓
46.
Methoxychlor
❑
❑✓
47.
Methyl mercaptan
❑
❑✓
48.
Methyl methacrylate
❑
❑�
49.
Methyl parathion
❑
IZI
50.
Mevinphos
❑
❑✓
51.
Mexacarbate
❑
❑✓
52.
Monoethyl amine
❑
❑✓
53.
Monomethyl amine
❑
✓❑
54.
Naled
❑
❑✓
55.
Naphthenic acid
❑
❑✓
56.
Nitrotoluene
❑
❑✓
57.
Parathion
❑
❑✓
EPA Form 3510-2C (Revised 3-19) Page 29

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
nrrunnnnGrnr, I N00027332 I TVA rhatnaa Hvrlrn Plant trTHl 1 001 OMB No.2040-0004
1 U UNIIIIIISSMI1
• 1
Presence or Absence
one
Reason Pollutant Believed Present in Discharge
Available Quantitative Data
(specify units)
Pollutant 7check
Believed
Present
Believed
Absent
58.
Phenolsulfonate
❑
❑✓
59.
Phosgene
❑
❑✓
60.
Propargite
❑
✓❑
61.
Propylene oxide
❑
✓❑
62.
Pyrethrins
❑
❑✓
63.
Quinoline
❑
❑✓
64.
Resorcinol
❑
❑✓
65.
Strontium
❑
❑✓
66.
Strychnine
❑
❑✓
Styrene
El
ID2,4,5-T
r68.
(2,4,5-tdchlorophenoxyaceticacid
ME (tetrachlorodiphenyl ethane)
❑
❑✓
70
2,4,5-TP [2-(2,4,5-tdchlorophenoxy)
ro anoic acid
❑
71.
Trichlorofon
❑
❑✓
72.
Triethanolamine
❑
❑✓
73.
Triethylamine
❑
❑✓
74.
Trimethylamine
❑
❑✓
75.
Uranium
❑
❑�
76.
Vanadium
❑
❑✓
EPA Form 3510-2C (Revised 3-19) Page 30

EPA Identification Number
NPDES Permit Number Facility Name Outfall Number
Form Approved 03/05/19
NC364OOO6646
NCO027332 TVA Chatuge Hydro Plant (CTH) 001
OMB No. 2040-0004
Presence or Absence
Pollutant
check one
Reason Pollutant Believed Present in Discharge
Available Quantitative Data
Believed Believed
(specify units)
Present Absent
77.
Vinyl acetate
❑
✓❑
78.
Xylene
❑
❑�
79.
Xylenol
❑
❑✓
80.
Zirconium
❑
❑✓
Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C (Revised 3-19) Page 31

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC364OOO6646 NCO027332 NA Chatuge Hydro Plant (CTH) 001 OMB No. 2040-0004
TCDD Presence or
Congeners Absence
Pollutant Used or check one Results of Screening Procedure
Manufactured Believed Believed
Present Absent
2,3,7,8-TCDD El El E✓
EPA Form 3510-2C (Revised 3-19) Page 33

EPA Identification Number NPDES Permit Number - Facility Name
Outfall Number
Form Approved 03/05/19
NC3640006646 NC0027332 TVA Chatuge Hydro Plant (CTH)
002
OMB No. 2040-0004
swum LIPMEMM=111-41
Effluent
Intake
Waiver
0 tional
Maximum
Maximum
Long -Term
17Y7O
Requested Units
(specify)
(if applicable)
Daily
Monthly
Average Daily
Number of
Long -Term
Number of
Discharge
Discharge
Discharge
Analyses
Average Value
Analyses
(required)
if available
if available
to your NPDES permitting authority for a waiver for all of the pollutants listed on this table for the noted outfall.
1'
Biochemical oxygen demand
❑
Concentration
Mass
(BOD5)
2'
Chemical oxygen demand
El
Concentration
Mass
(COD)
Concentration
3.
Total organic carbon (TOC)
❑
Mass
Concentration
4.
Total suspended solids (TSS)
❑
Mass
Concentration
5.
Ammonia (as N)
❑
Mass
6.
Flow
❑
Rate
t"'A vk*\
Temperature (winter)
❑
°C
°C
7.
Temperature (summer)
❑
°C
°C
pH (minimum)
❑
Standard units
S.u.
8.
pH (maximum)
❑
Standard units
s.u.
1 Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C (Revised 3-19) Page 9

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
NC3640006646 NCO027332 TVA Chatuge Hydro Plant(CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
Testing
Required
Presence or Absence
check one
Units
(specify)
(p �)
Effluent
Intake
(optional)
Pollutant/Parameter
(and
(and CAS Number, if available)
Believed
Present
Believed
Absentof
Maximum
Daily
(required)
Maximum
Monthly
if availabllee
Long -Term
Average
Discharge
if available
Number
Analyses
0e)
Lon
Term
Average
Number
Analyses
El Check here if you qualify as a small business per the instructions to Form 2C and, therefore, do not need to submit quantitative data for any of the organic toxic pollutants in Sections
2 through 5 of this table. Note, however, that you must still indicate in the appropriate column of this table if you believe any of the pollutants listed are present in your discharge.
Section 1. Toxic Metals, Cyanide, and Total Phenols
1.1
Antimony, total
(7440-36-0)
Concentration
Mass
1.2
Arsenic, total
(7440-38-2)
❑
El
✓
Concentration
Mass
1.3
Beryllium, total
(7440-41-7)
Concentration
Mass
1.4
Cadmium, total
(7440-43-9)
Concentration
Mass
1.5
Chromium, total
(7440-47-3)
Concentration
Mass
1.6
Copper, total
(7440-50-8)
✓
Concentration
Mass
1.7
Lead, total
(7439-92-1)
✓
Concentration
Mass
1.8
Mercury, total
(7439-97-6)
Concentration
Mass
1'9
Nickel, total
(7440-02-0)
Concentration
Mass
1.10
Selenium, total
(7782-49-2)
El
El
✓
Concentration
Mass
1.11
Silver, total
(7440-22-4)
El
El
✓
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 11

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
NC3640006646 NCO027332 TVA Chatuge Hydro Plant(CTH) 1 002
Form Approved 03/05/19
OMB No. 2040-0004
Presence or Absence
check one
Effluent
Intake
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long-
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absentof
Discharge
Discharge
rgDischarge
Average
red)
(reif
available)
Analyses
Analyses
available
1.12
Thallium, total
Concentration
Mass
(7440-28-0)
1.13
Zinc, total
❑
✓❑
Concentration
Mass
(7440-66-6)
1.14
Cyanide, total
El
❑
❑✓
Concentration
Mass
(57-12-5)
1.15
Phenols, total
El
El❑✓
Concentration
Mass
Section 2.Organic Toxic Pollutants (GC/MS
Fraction
—Volatile Compounds)
2.1
Acrolein
El
❑
❑
Concentration
Mass
(107-02-8)
2.2
Acrylonitrile
❑
❑
❑✓
Concentration
Mass
(107-13-1)
2.3
Benzene
❑
Concentration
Mass
(71-43-2)
2.4
Bromoform
El
ID
Concentration
Mass
(75-25-2)
2.5
Carbon tetrachloride
El
El
0
Concentration
Mass
(56-23-5)
2.6
Chlorobenzene
El
❑
❑
Concentration
Mass
(108-90-7)
2.7
Chlorodibromomethane
El
❑
ED
Concentration
Mass
(124-48-1)
2.8
Chloroethane
❑
❑✓
Concentration
(75-00-3)
1
1Mass
EPA Form 3510-2C (Revised 3-19) Page 12

LF'A wentaiGatlon Number NF'Uto rents¢ Number raclllty Name Uuttall Number
NC3640006646 NCO027332 TVA Chatuge Hydro Plant(CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
Presence or Absence
check one
Effluent
Intake
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long-
(and CAS Number, if available )
Required
q
Believed
Believed
s eci
(p �)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
(ilee)
Daily
of
Average
of
favailabl
Discharge
Analyses
Analyses
if available
21.9
2-chloroethylvinyl ether
❑
❑
❑✓
Concentration
Mass
(110-75-8)
2.10
Chloroform (67-66-3)
❑✓
Concentration
Mass
2.11
Dichlorobromomethane
Concentration
Mass
(75-27-4)
212
1,1-dichloroethane
❑
❑
❑✓
Concentration
Mass
(75-34-3)
2.13
1,2-dichloroethane
❑
❑
❑�
Concentration
Mass
(107-06-2)
2.14
1,1-dichloroethylene
❑
❑
❑✓
Concentration
Mass
(75-35-4)
2.15
1,2-dichloropropane
El
El
Concentration
Mass
(78-87-5)
2.16
1,3-dichloropropylene
❑
❑
❑✓
Concentration
Mass
(542-75-6)
2.17
Ethylbenzene
❑
El
❑✓
Concentration
Mass
(100-41-4)
2.18
Methyl bromide
❑
❑
✓I
Concentration
Mass
(74-83-9)
2.19
Methyl chloride
Concentration
Mass
(74-87-3)
2.20
Methylene chloride
❑
❑
✓❑
Concentration
Mass
(75-09-2)
2.21
1 1,2 2- tetrachloroethane
❑
❑
❑✓
Concentration
1 Mass
(79-34-5)
1
1
EPA Form 3510-2C (Revised 3-19) Page 13

EPA Identification Number NPUtS Permit Number Facility Name Outfall Number
NC3640006646 NCO027332 TVA Chatuge Hydro Plant(CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
• 1
•
Testing
Required
• 1 • •
Presence or Absence
check one
1XI111111HUT
Units
(specify)
Effluent
Intake
(optional)
Pollutant/Parameter
(and CAS Number, if available
(and
Believed
Present
Believed
Absent
Maximum
Daily
D
(require)
Maximum
Monthly
(ifavailablle
e)
Long -Term
Average
Daily
Discharge
if available
Number
of
Analyses
Long -
Term
Average
Value
Number
of
Analyses
2.22
Tetrachloroethylene
(127-18-4)
El
El
❑
Concentration
Mass
2 23
Toluene
(108-88-3)
Concentration
Mass
2.24
1,2-trans-dichloroethylene
(156-60-5)
❑
❑
❑✓
Concentration
Mass
2.25
1,1,1-trichloroethane
(71-55-6)
❑
❑
El
Concentration
Mass
2.26
1,1,2-trichloroethane
(79-00-5)
❑
❑
✓❑
Concentration
Mass
2.27
Trichloroethylene
(79-01-6)
❑
❑
❑✓
Concentration
Mass
2.28
Vinyl chloride
(75-01-4)
El
El
❑
Concentration
Mass
Section 3.Organic Toxic Pollutants (GC/MS Fraction
—Acid Compounds)
3.1
2-chlorophenol
(95-57-8)
❑
O
Concentration
Mass
3.2
2 4-dichlorophenol
(120-83-2)
Concentration
Mass
3.3
2,4-dimethylphenol
(105-67-9)
❑
❑
✓❑
Concentration
Mass
3.4
4,6-dinitro-o-cresol
(534-52-1)
Concentration
Mass
3.5
2,4-dinitrophenol
(51-28-5)
❑
1
❑
1
❑✓
1
Concentration
1 Mass
EPA Form 3510-2C (Revised 3-19) Page 14

EPA Identification Number NYUtS Hermit Number Facility Name Outfall Nu
NC3640006646 NCO027332 TVA Chatuge Hydro Plant(CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
TOXICTABLE B.
1E,
TOTAL PHENOLS,1
Testing
Required
ORGANIC TOXIC•
Presence or Absence
check one
• I
Units
(specify)
Effluent
Intake
(optional)
1
Pollutant/Parameter
(and CAS Number, if available)
Believed
Present
Believed
Absent
Maximum
Daily
Discharge ge
Maximum
Monthly
Discharge (if available)
Long -Term
Average
Dail
Discharge
if available
Number
Analyses
Long-
Average Term
Value e
Number
of
Analyses
3.61
.6
2-nitrophenol
(88-75-5)
Concentration
Mass
3.7
4-nitrophenol
(100-02-7)
Concentration
Mass
3.8
p-chloro-m-cresol
(59-50-7)
❑
❑
✓❑
Concentration
Mass
3.9
Pentachlorophenol
(87-86-5)
❑
❑
✓❑
Concentration
Mass
3.10
Phenol
(108-95-2)
❑
El
El
Concentration
Mass
3.11
2,4,6-trichlorophenol
(88-05-2)
❑
❑
❑✓
Concentration
Mass
Section 4.Organic Toxic Pollutants GC/MS
Fraction
—Base /Neutral
Compounds
4.1
Acenaphthene
(83-32-9)
❑
❑
Q✓
Concentration
Mass
4.2
Acenaphthylene
(208-96-8)
El
El
IZI
Concentration
Mass
4.3
Anthracene
(120-12-7)
El
IZI
Concentration
j Mass
4.4
Benzidine
(92 87 5)
Concentration
Mass
4.5
Benzo (a) anthracene
(56-55-3)
❑
❑
❑✓
Concentration
Mass
4.6
Benzo (a) pyrene
(50-32-8)
❑
❑
1
❑✓
1Mass
Concentration
EPA Form 3510-2C (Revised 3-19) Page 15

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
NC3640006646 NCO027332 TVA Chatuge Hydro Plant(CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
WE • I
Pollutant/Parameter
(and CAS Number, if available)
•
Testing
Required
• 1 •'
Presence or Absence
check one
01.4 1911111129111111I
Units
(specify)
Effluent
Intake
(optional)
Believed
Present
Believed
Absent
Maximum
Daily
Dverag
( equired)
Maximum
Monthly
Df ava labllee)
Long -Term
Average
Daily
Discharge
if available
Number
of
Analyses
Long'
Term
AValuee
Number
of
Analyses
4.7
3,4-benzofluoranthene
(205-99-2)
El
0
El
Concentration
Mass
4.8
Benzo (ghi) perylene
(191-24-2)
❑
❑
❑✓
Concentration
Mass
4.9
Benzo (k) fluoranthene
(207-08-9)
El
El
IZI
Concentration
Mass
4.10
Bis (2-chloroethoxy) methane
(111-91-1)
El
❑
Concentration
Mass
4.11
Bis (2-chloroethyl) ether
(111-44-4)
Concentration
Mass
4.12
Bis (2-chloroisopropyl) ether
(102-80-1)
El
❑
❑✓
Concentration
Mass
4.13
Bis (2-ethylhexyl) phthalate
(117-81-7)
❑
El
IZI
Concentration
Mass
4.14
4-bromophenyl phenyl ether
(101-55-3)
❑
❑
❑
Concentration
Mass
4.15
Butyl benzyl phthalate
(85-68-7)
❑
❑
❑✓
Concentration
Mass
4.16
2-chloronaphthalene
(91-58-7)
❑
El
❑✓
Concentration
Mass
4.17
4-chlorophenyl phenyl ether
(7005-72-3)
Concentration
Mass
4.18
Chrysene
(218-01-9)
Concentration
Mass
4.19
Dibenzo (a,h) anthracene
(53-70-3) 1
❑
❑
1
❑
1Mass
Concentration
EPA Form 3510-2C (Revised 3-19) Page 16

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
NC3640006646 NCO027332 NA Chatuge Hydro Plant(CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
M6116luk'1111111: kill
Presence or Absence
check one
Effluent
Intake
(optional)
PolIutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Lon
(and
(and CAS Number, if available)
Required
Believed
Believed
(specify)
(p �)
Daily
Monthly
Average
Number
Term
Number
Present
Absentof
Discharge
Discharge
Average
(required)
(if available)
Discharge
Analyses
Value
Analyses
if available
4.20
1,2-dichlorobenzene
El
11
IZI
Concentration
Mass
(95-50-1)
4 21
1,3-dichlorobenzene
Concentration
Mass
(541-73-1)
4.22
1,4-dichlorobenzene
El
1:1
IZI
Concentration
Mass
(106-46-7)
4.23
3,3-dichlorobenzidine
El
1:1
a
Concentration
Mass
(91-94-1)
4.24
Diethyl phthalate
©
Concentration
Mass
(84-66-2)
4.25
Dimethyl phthalate
El
Concentration
Mass
(131-11-3)
4.26
Di-n-butyl phthalate
El
El
©
Concentration
Mass
(84-74-2)
4.27
2,4-dinitrotoluene
0
Concentration
Mass
(121-14-2)
4.28
2 6-dinitrotoluene
IZI
Concentration
Mass
(606-20-2)
4.29
Di-n-octyl phthalate
El
El
IZI
Concentration
Mass
(117-84-0)
4.30
1,2-Dipheny1hydrazine
El
El
0
Concentration
Mass
(as azobenzene) (122-66-7)
4.31
Fluoranthene
Concentration
Mass
(206-44-0)
4.32
Fluorene
El
El
El
Concentration
1 Mass
(86-73-7)
1
1
EPA Form 3510-2C (Revised 3-19) Page 17

LNA Identification Number NPDE6 Permit Number Facility Name Outfall Number
NC3640006646 NCO027332 TVA Chatuge Hydro Plant(CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
Presence or Absence
Intake
check one
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long -
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
of
Average
of
(required)
(if available)
Discharge
Analyses
value
Analyses
if available
4.33
Hexachlorobenzene
❑
❑
0
Concentration
Mass
(118-74-1)
4.34
Hexachlorobutadiene
❑
❑
❑✓
Concentration
Mass
(87-68-3)
4.35
Hexachlorocyclopentad iene
Concentration
Mass
(77-47-4)
4.36
Hexachloroethane
El
❑
El
Concentration
Mass
(67 72 1)
4.37
Indeno (1,2,3-cd) pyrene
El
❑
❑✓
Concentration
Mass
(193-39-5)
4.38
lsophorone
❑
El
IZI
Concentration
Mass
(78-59-1)
4.39
Naphthalene
Concentration
Mass
(91-20-3)
4.40
Nitrobenzene
❑
El
❑✓
Concentration
Mass
(98-95-3)
4.41
N-nitrosodimethylamine
❑
❑
❑✓
Concentration
Mass
(62-75-9)
4.42
N-nitrosodi-n-propylamine
❑
❑
❑✓
Concentration
Mass
(621-64-7)
4.43
N-nitrosodiphenylamine
Concentration
Mass
(86-30-6)
4.44
Phenanthrene
❑
❑
0
Concentration
Mass
(85-01-8)
4.45
Pyrene
Concentration
Mass
(129-00-0)
EPA Form 3510-2C (Revised 3-19) Page 18

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
NC3640006646 NC0027332 TVA Chatuge Hydro Plant(CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
Presence or Absence
check one
Effluent
Intake
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long-
(and CAS Number, if available )
Required
q
Believed
Believed
(p �v)
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
aily
of
Average
of
(required)
if availabllee)
)
Discharge
Analyses
Analyses
if available
4.46
1,2,4-trichlorobenzene
❑
❑
❑✓
Concentration
Mass
(120-82-1)
Section 5.Organic Toxic Pollutants (GC/MS
Fraction
—Pesticides)
5.1
Aldrin
El
El
El
Concentration
Mass
(309-00-2)
5.2
a-BHC
Concentration
Mass
(319-84-6)
5.3
R-BHC
Concentration
Mass
(319-85-7)
5.4
y-BHC
El
El
IZI
Concentration
Mass
(58 89 9)
5.5
ii-BHC
Concentration
Mass
(319-86-8)
5.6
Chlordane
O
Concentration
Mass
(57-74-9)
5.7
4,4'-DDT
El
El
IZI
Concentration
Mass
(50-29-3)
5.8
4,4'-DDE
1:1
El
El
Concentration
Mass
(72-55-9)
5.9
4 4'-DDD
El
El
ID
Concentration
Mass
(72-54-8)
5.10
Dieldrin
El
El
El
Concentration
Mass
(60-57-1)
5.11
a-endosulfan
Concentration
Mass
(115-29-7)
EPA Form 3510-2C (Revised 3-19) Page 19

1 Identification Number NPDES Permit Number Facility Name Outfall Number
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) 002
Form Approved 03/05/19
OMB No. 2040-0004
Pollutant/Parameter
(and CAS Number, if available)
Testing
Required
Presence or Absence
check one
Effluent
Intake
(optional)
Units
(specify)
Believed
Present
Believed
Absent
Maximum
Daily
Discharge
(ref
Maximum
Monthly
Discharge)
Long -Term
Average
Daily
Discharge
available
Number
of
Analyses
Long -
Term
Average
Number
of
Analyses
5.12
R-endosulfan
(115-29-7)
❑
❑
❑
Concentration
Mass
5.13
Endosulfan sulfate
(1031-07-8)
❑
❑
❑
Concentration
Mass
5.14
Endrin
(72-20-8)
❑
❑
❑
Concentration
Mass
5.15
Endrin aldehyde
(7421-93-4)
❑
❑
❑
Concentration
Mass
5.16
Heptachlor
(76-44-8)
❑
❑
0
Concentration
Mass
5.17
Heptachlor epoxide
(1024-57-3)
❑
❑
0
Concentration
Mass
5.18
PCB-1242
(53469-21-9)
❑
❑
IZI
Concentration
Mass
5.19
PCB-1254
(11097-69-1)
❑
Concentration
Mass
5.20
PCB-1221
(11104-28-2)
❑
❑
0
Concentration
Mass
5.21
PCB-1232
(11141-16-5)
❑
❑
IZI
Concentration
Mass
5.22
PCB-1248
(12672-29-6)
❑
❑
IZI
Concentration
Mass
5.23
PCB-1260
(11096-82-5)
❑
❑
Concentration
Mass
5.24
PCB-1016
(12674-11-2)
❑
❑
El
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 20

EPA Identification Number
NC364O0O6646
NPDES Permit Number
NCOO27332
Name
TVA Chatuge Hydro Plant (CTH)
Outfall Number
002
Form Approved 03/05/19
OMB No. 2040-0004
TABLE B. TOXIC METALS, CYANIDE,
TOTAL PHENOLS,
AND ORGANIC TOXIC
POLLUTANTS (40 CFR
122.21(g)(7)(v))'
Intake
Presence or Absence
check one
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long -
(and
(and CAS Number, if available
Required
Believed
Believed
(specify)
(p fY)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
Discharge
g
of
Analyses
Average
of
Analyses
(required)
(if available)
if available
Value
�Toxaphene
5.25
❑
❑❑
Concentration
Mass
(8O01-35-2)
Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C (Revised 3-19) Page 21

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC364O0O6646 NCOO27332 TVA Chatuge Hydro Plant (CTH) 002 OMB No.2040-0004
1 s •� 1
Presence or Absence Intake
check one Effluent
(Optional)
Units
Pollutant Maximum Long -Term Long -Term
Believed Believed (specify) Maximum Daily
Monthly Average Daily Number of Number of
Present Absent D� Average
eghired)e Discharge Discharge Analyses Analyses
if available if available
❑ Check here if you believe all pollutants on Table C to be present in your discharge from the noted outfall. You need not complete the "Presence or Absence" column of Table C for
each pollutant.
❑ Check here if you believe all pollutants on Table C to be absent in your discharge from the noted outfall. You need not complete the 'Presence or Absence" column of Table C for
each pollutant.
1
Bromide
❑
❑
Concentration
Mass
(24959-67-9)
2'
total
ElChlorine,
❑
Concentration
Mass
residual
3.
Color
El
�
Concentration
Mass
4.
Fecal coliform
El
❑✓
Concentration
Mass
5
Fluoride
❑
❑
Concentration
Mass
(16984-48-8)
6
Nitrate -nitrite
El
0Concentration
Mass
7'
Nitrogen, total
El
El
Concentration
Mass
organic (as N)
8.
Oil and grease
El
�
Concentration
Mass
9'
Phosphorus (as
El❑
Concentration
Mass
P), total (7723-14-0)
10.
Sulfate (as SO4)
❑
0
Concentration
Mass
(14808-79-8)
11.
Sulfide (as S)
❑
0
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 23

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC364O0O6646 NCO027332 TVA Chatuge Hydro Plant (CTH) 002 OMB No.2040-0004
Presence or Absence Intake
check one Effluent (Optional)
Pollutant Units Maximum Long -Term
Believed Believed (specify) Maximum Daily Long -Term
Present Absent Discharge Monthly Average Daily Number of Average Number of
Discharge Discharge Analyses Analyses
(required) Value
if available if available
12
Sulfite (as S03)
❑
❑✓
Concentration
Mass
(1426545-3)
13.
Surfactants
❑
❑✓
Concentration
Mass
14.
Aluminum, total
El
ElConcentration
Mass
(7429-90-5)
15.
Barium, total
❑
❑✓
Concentration
Mass
(7440-39-3)
16.
Boron total
❑
El
Concentration
Mass
(7440-42-8)
17.
Cobalt, total
❑
❑
Concentration
Mass
(7440-484)
18
Iron total
❑
❑
Concentration
Mass
(7439-89-0)
19
Magnesium, total
❑
0
Concentration
Mass
(7439-954)
Molybdenum,
Concentration
20.
total
❑
El
7439-98-7
Mass
21
Manganese, total
❑
❑
Concentration
Mass
(7439-96-5)
22
Tin, total
❑
❑
Concentration
Mass
(7440-31-5)
23
Titanium, total
❑
❑
Concentration
Mass
(7440-32-6)
EPA Form 3510-2C (Revised 3-19) Page 24

EPA Identification Number
NPDES Permit Number
Facility Name
Outfall Number
Form Approved 03105/19
NC3640006646
NCO027332
TVA Chatuge Hydro Plant (CTH)
002
OMB No.2040-0004
Presence or Absence
Intake
check
one
Effluent
(Optional)
Pollutant
Believed
Believed
Units
(specify)
Maximum Daily
Maximum
Long -Term
Long -Term
Present
Absent
Discharge
Monthly
Average Daily Number of
Number of
Average
(required)
Discharge
Discharge Analyses
Value Analyses
f available
if available
24. Radioactivity
Alpha, total
El
❑✓
Concentration
- -
'
-
Mass
-
Beta, total
❑
❑✓
Concentration
Mass
Radium, total
❑
✓❑
Concentration
Mass
Radium 226, total
Concentration
Mass
I Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C (Revised 3-19) Page 25

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) 002 OMB No. 2040-0004
1 •1� 1 • 1
Presence or Absence
Pollutant check one Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
1.
Asbestos
❑
❑✓
2.
Acetaldehyde
❑
❑✓
3.
Allyl alcohol
❑
❑✓
4.
Allyl chloride
❑
❑✓
5.
Amyl acetate
❑
❑✓
6.
Aniline
❑
❑✓
7.
Benzonitrile
❑
❑✓
8.
Benzyl chloride
❑
❑✓
9.
Butyl acetate
❑
❑✓
10.
Butylamine
❑
❑✓
11.
Captan
❑
❑✓
12.
Carbaryl
❑
✓❑
13.
Carbofuran
❑
❑✓
14.
Carbon disulfide
❑
❑✓
15.
Chlorpyrifos
❑
❑�
16.
Coumaphos
❑
❑✓
17.
Cresol
❑
❑✓
18.
Crotonaldehyde
❑
❑✓
19.
Cyclohexane
❑
❑✓
EPA Form 3510-2C (Revised 3-19) Page 27

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) 002 OMB No. 2040-0004
•16I 0 1111141
Presence or Absence
Pollutant checkone Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
20.
2,4-D (2,4-dichlorophenoxyacetic acid)
❑
❑✓
21.
Diazinon
❑
❑✓
22.
Dicamba
❑
❑✓
23.
Dichlobenil
❑
❑✓
24.
Dichlone
❑
❑✓
25.
2,2-dichloropropionic acid
❑
❑✓
26.
Dichlorvos
❑
❑✓
27.
Diethyl amine
❑
❑✓
28.
Dimethyl amine
❑
❑✓
29.
Dintrobenzene
❑
❑✓
30.
Diquat
❑
❑✓
31.
Disulfoton
❑
❑✓
32.
Diuron
❑
❑✓
33.
Epichlorohydrin
❑
❑✓
34.
Ethion
❑
❑✓
35.
Ethylene diamine
❑
0
36.
Ethylene dibromide
❑
❑✓
37.
Formaldehyde
❑
❑✓
38.
Furfural
❑
❑✓
EPA Form 3510-2C (Revised 3-19) Page 28

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) 002 OMB No. 2040-0004
1
Presence or Absence
Pllutant check one Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
1411sopropanolarnineo
Guthion
❑
❑✓
soprene
❑
❑✓
❑
❑✓
42.
Kelthane
❑
❑✓
43.
Kepone
❑
❑✓
44.
Malathion
❑
✓❑
45.
Mercaptodimethur
❑
❑✓
46.
Methoxychlor
❑
❑✓
47.
Methyl mercaptan
❑
❑✓
48.
Methyl methacrylate
❑
❑✓
49.
Methyl parathion
❑
❑✓
50.
Mevinphos
❑
✓❑
51.
Mexacarbate
❑
❑✓
52.
Monoethyl amine
❑
❑✓
53.
Monomethyl amine
❑
❑✓
54.
Naled
❑
❑✓
55.
Naphthenic acid
❑
❑✓
56.
Nitrotoluene
❑
❑✓
57.
Parathion
❑
❑✓
EPA Form 3510-2C (Revised 3-19) Page 29

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC3640006646 NCO027332 TVA Chatuge Hydro Plant (CTH) 002 OMB No.2040-0004
1 I is
Presence or Absence
Pollutant check one Reason Pollutant Believed Present in Discharge Available Quantitative Data
Believed Believed (specify units)
Present Absent
58.
Phenolsulfonate
❑
❑✓
59.
Phosgene
❑
❑✓
60.
Propargite
❑
❑✓
61.
Propylene oxide
❑
❑✓
62.
Pyrethrins
❑
❑✓
63.
Quinoline
❑
❑✓
64.
Resorcinol
❑
❑✓
65.
Strontium
❑
❑✓
66.
Strychnine
❑
❑✓
67.
Styrene
❑
❑✓
68.
2,4,5-T (2,4,5-trichlorophenoxyacetic
acid
❑
❑
69.
TDE (tetrachlorodiphenyl ethane)
❑
❑✓
70
2,4,5-TP (2-(2,4,5-trichlorophenoxy)
ro anoic acid
❑
❑
71.
Trichlorofon
❑
❑✓
72.
Triethanolamine
❑
❑✓
73.
Triethylamine
❑
❑✓
74.
Trimethylamine
❑
❑✓
75.
Uranium
❑
❑✓
76.
Vanadium
❑
❑✓
EPA Form 3510-2C (Revised 3-19) Page 30

EPA Identification Number
NPDES Permit Number Facility Name Outfall Number
Form Approved 03/05/19
NC364O0O6646
NCOO27332 TVA Chatuge Hydro Plant (CTH) 002
OMB No.2040-0004
1 '1•
1 • 1 �
Presence or Absence
Pollutant
check one
Believed Believed Reason Pollutant Believed Present in Discharge
Available Quantitative Data
(specify units)
Present Absent
77.
Vinyl acetate
❑
❑✓
78.
Xylene
❑
❑✓
79.
Xylenol
❑
❑✓
80.
Zirconium
❑
❑✓
I Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C (Revised 3-19) Page 31

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC3640006646 NC0027332 TVA Chatuge Hydro Plant (CTH) 002 OMB No.2040-0004
TCDD Presence or
Congeners Absence
Pollutant Used or check one Results of Screening Procedure
Manufactured Believed Believed
Present Absent
2,3,7,8-TCDD ❑
EPA Form 3510-2C (Revised 3-19) Page 33

INTAKE FROM CHATUGE RESERVOIR (HIWASSEE RIVER)
Outfall
003-HW 003-A
Generator Air and -' -A-' -' -' -' -� - 0.648 MGD - _� 003 003-TD 003-DS
Bearing Cooling Water 003-B Embedded Piping
L
Draft Tube Unwatering Unwatering 7.2 MGD m
....... ....., }'
Operations Sump O OOZ ;Converge in 3
i Powerhouse
.............................�
E Embedded
Powerhouse Floor Drains
and Penstock Envelope .......> ;Piping
Leakage 0 1.44 MGD OO
Station
Sump ......., ..
Wheel Pit LeakageO
Unit 1
Potable Sanitary Sewage Drains Septic Tank Subsurface Disposal Field
......... ............
Water:1
Symbols:
Raw River Water, Potable Water, Precipitation, Leakage, or Ground Water
- - - Non -Contact Cooling Water
......•••••• Other Wastewater
QMotor -Driven Pump
Temperature and pH monitoring locations - The receiving water temperature is measured in the tailrace downstream of
003-A the plant. The raw cooling water source is lake water flowing into the penstock. Therefore, the ambient upstream
0 temperature is based on a sample collected from the raw cooling water system prior to passing through the coolers.
The generator air and bearing cooling water combine within the dam structure at a point that is inaccessible for
sampling. Therefore, they are monitored separately. Alphanumeric designation above or in close proximity to the
triangle denotes the unique identifier assigned to the sampling location.
Notes:
1. All effluents discharge into the Hiwassee River.
2. Flows are based on pump -rated capacities and maximum design flows.
3. Draft Tube Unwatering operations are infrequent and typically only occuring
during outages.
4. Pump discharges for Outfalls 001 and 002 converge in concrete in the
powerhouse before discharging to the Hiwassee River downstream of the weir.
5. Sampling point abbreviations:
a. 003-HW - Head water (off Penstock inside powerhouse)
b. 003-A - Air Cooling Water (inside powerhouse)
c. 003-B - Bearing Cooling Water (inside powerhouse)
d. 003-TD - Tail Deck (inactive - insufficient mixing)
e. 003-DS - Downstream (sampled at Chatuge Dam Road bridge)
Tennessee Valley Authority
Chatuge Hydro Plant
NPDES Permit No. NC 0027332
Clay County, North Carolina
January 2023

EPA Identification Number
NPDES Permit Number
Facility Name
Fonn Approved 03/05/19
NC3640006646
NCO027332
TVA Chatuge Hydro Plant (CTH)
OMB No. 2040-0004
U.S. Environmental Protection Agency
FORM
-EPA
Application for NPDES Permit to Discharge Wastewater
NPDES
MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURAL FACILITIES WHICH
DISCHARGE ONLY NONPROCESS WASTEWATER
SECTIONOUTFALL
LOCATION
1.1 Provide information
on each of the facili 's outfalls in the table below.
c
—
Outfall
Number
Receiving Water Name
Latitude
Longitude
0
003A
Hiwassee River
35' 01' 09" N
83* 47' 30" W
cc
003B
Hiwassee River
35* 01, 09" N
83* 47' 30" W
O
SECTIONDISCHARGE
1 1
2.1
Are you a new or existing discharger? (Check only one response.)
t
❑ New discharger ❑✓ Existing discharger 4 SKIP to Section 3.
H
2.2
Specify your anticipated discharge date:
0
SECTIONt
3.1
What types of wastes are currently being discharged if you are an existing discharger or will be discharged if you are a
new discharger? (Check all that apply.)
❑ Sanitary wastes ❑ Other nonprocess wastewater (describe/explain
❑ Restaurant or cafeteria waste directly below)
n
❑✓ Non -contact cooling water
3.2
Does the facility use cooling water additives?
d
W
❑ Yes ❑✓ No 4 SKIP to Section 4.
3"
3.3
List the cooling water additives used and describe their com Dosition.
Cooling Water Additives
Composition of Additives
list
if available toyou)
SECTION
4.1
Have you completed monitoring for all parameters in the table below at each of your outfalls and attached the results to
this application package?
❑✓ Yes ❑ No; a waiver has been requested from my NPDES permitting authority
attach waiver request and additional information -+ SKIP to Section 5.
4.2
Provide data as requested in the table below.
See instructions forspecifics.)
Number of
Maximum Daily
Average Daily
Source
N
Parameter or Pollutant
Analyses
Discharge
Discharge
(use codes
(if actual data
s eci units
(specify units
per
Mass
Conc.
Mass
Conc.
reported)
instructions)
Q
Biochemical oxygen demand (BOD5)
1
2.42* mg/I
0
CD
o
Total suspended solids (TSS)
1
<2.50 mg/I
o
—
Oil and grease
4
<5.68 mg/I
w
Ammonia (as N)
1
<0.250 mg
O
Discharge flow
1
0.648 MGD**
pH (report as range)
11
5.66 - 7.51 SU
Temperature (winter)
6
26.4 deg C
Temperature (summer)
5
28.3
I Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant
parameters or required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2E (revised 3-19)
Page 1
*The sample dilutions set-up for the BOD/CBOD analysis did not meet the oxygen depletion criteria of at least 2 mg/L. Reported result is an estimated value.
—Discharge flow is the combined flow of 003A and 003B.

EPA Identification Number
PDES Permit Number
Facility Name
Form Approved 03/05/19
NC3640006646
NC0027332
NA Chatuge Hydro Plant (CTH)
OMB No. 2040-0004
4.3
Is fecal coliform believed present, or is sanitary waste discharged (or will it be discharged)?
❑ Yes ❑� No 4 SKIP to Item 4.5.
4.4
Provide data as requested in the table below.r
See instructions forspecifics.)
Number of
Maximum Daily
Average Daily
Source
Parameter or Pollutant
Analyses
Discharge
Discharge
(use codes
(if actual data
s eci units
s eci units
per
Mass
Conc.
Mass
Conc.
reported)
Instructions.)
Fecal coliform
E. soli
Enterococci
0
4.5
Is chlorine used (or will it be used)?
L)
❑ Yes 0No 4 SKIP to Item 4.7.
N
4.6
Provide data as requested in the table be
ow.' See instructions forspecifics.)
Number of
Maximum Daily
Average Daily
Source
Parameter or Pollutant
Analyses
Discharge
Discharge
(use codes
s
(if actual data
s eci units
spec units)
per
Mass
Conc.
Mass
Conc.
reported)
instructions)
Total Residual Chlorine
w
4.7
Is non -contact cooling water discharged (or will it be discharged)?
❑✓ Yes ❑ No 4 SKIP to Section 5.
4.8
Provide data as requested in the table below.r See instructions forspecifics.)
Q
Number of
Maximum Daily
Average Daily
Source
o
Parameter or Pollutant
Analyses
Discharge
Discharge
(use codes
O
(if actual data
(specify units
(specify units
per
Mass Conc.
Mass Conc.
reported)
instructions)
Chemical oxygen demand (COD)
1
<20.0 mg/I
Total organic carbon (TOC)
1
1.23 mg/I
SECTION•
5.1
Except for stormwater water runoff, leaks, or spills, are any of the discharges you described in Sections 1 and 3 of this
application intermittent or seasonal?
❑ Yes 4 Complete this section. ❑✓ No 4 SKIP to Section 6.
c
5.2
Briefly describe the frequency and duration of flow.
SECTION
E
6.1
Briefly describe any treatment system(s) used (or to be used).
No treatment is used for the once through non -contact cooling water.
c
a
E:
is
d
H
Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant
parameters or required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2E (revised 3-19) Page 2

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NC3640006646
NCO027332
TVA Chatuge Hydro Plant (CTH)
OMB No. 2040-0004
U.S. Environmental Protection Agency
FORM
EPA
Application for NPDES Permit to Discharge Wastewater
NPDES
��
MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURAL FACILITIES WHICH
DISCHARGE ONLY NONPROCESS WASTEWATER
SECTIONOUTFALL
LOCATIONr
Provide information
on each of the facili 's outfalls in the table below.
7111.1
ONummbebe r
Receiving Water Name
Latitude
Longitude
003A
Hiwassee River
35° 01' 09" N
83° 47' 30" W
�
O
003B
Hiwassee River
35° Ol• 09" N
83° 47' 30" W
SECTION.•
D.
2.1
Are you a new or existing discharger? (Check only one response.)
s
❑ New discharger ❑✓ Existing discharger 4 SKIP to Section 3.
y
2.2
Specify your anticipated discharge date:
0
SECTIONi
3.1
What types of wastes are currently being discharged if you are an existing discharger or will be discharged if you are a
new discharger? (Check all that apply.)
❑ Sanitary wastes ❑ Other nonprocess wastewater (describe/explain
❑ Restaurant or cafeteria waste directly below)
❑ Non -contact cooling water
3.2
Does the facility use cooling water additives?
d
❑ Yes ❑✓ No 4 SKIP to Section 4.
3.3
List the cooling water additives used and describe their com Dosition.
Cooling Water Additives
Composition of Additives
list
if available toyou)
SECTION1
4.1
Have you completed monitoring for all parameters in the table below at each of your outfalls and attached the results to
this application package?
❑✓ Yes ❑ No; a waiver has been requested from my NPDES permitting authority
attach waiver request and additional information 4 SKIP to Section 5.
4.2
Provide data as requested in the table below.' See instructions forspecifics.)
U)
Number of
Maximum Daily
Average Daily
Source
V
Parameter or Pollutant
Analyses
Discharge
Discharge
(use codes
(if actual data
s eci units
(specify units
per
Mass
Conc.
Mass
Conc.
reported)
instructions)
ea
s
m
Biochemical oxygen demand (BOD5)
1
2.62 mg/I*
oTotal
suspended solids (TSS)
1
<2.50 mg/I
—
Oil and grease
4
<S.68 mg/I
w
co
Ammonia (as N)
1
<0.2So mg
O
Discharge flow
1
0.648 MGD**
pH (report as range)
10
6.01 - 7.19 SU
Temperature (winter)
6
20.4 deg C
Temperature (summer)
4
16.5 deg C
' Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant
parameters or required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2E (revised 3-19) Page 1
'The sample dilutions set-up for the BOD/CBOD analysis did not meet the oxygen depletion criteria of at least 2 mg/L. Reported result is an estimated value.
"Discharge flow is the combined flow of 003A and 003B.

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NC3640006646
NCO027332
TVA Chatuge Hydro Plant (CTH)
OMB No. 2040-0004
4.3
Is fecal coliform believed present, or is sanitary waste discharged (or will it be discharged)?
❑ Yes ❑✓ No 4 SKIP to Item 4.5.
4.4
Provide data as requested in the table below.t
See instructions forspecifics.)
Number of
Maximum Daily
Average Daily
Source
Parameter or Pollutant
Analyses
Discharge
Discharge
(use codes
(if actual data
s eci units
(specify units
per
Mass
Conc.
Mass
Conc.
reported)
Instructions.)
Fecal coliform
E. coli
c
w
Enterococci
4.5
Is chlorine used (or will it be used)?
❑ Yes ❑✓ No 4 SKIP to Item 4.7.
y
4.6
Provide data as requested in the table below.
See instructions forspecifics.)
Number of
Maximum Daily
Average Daily
Source
Parameter or Pollutant
Analyses
Discharge
Discharge
(use codes
c
(if actual data
s eci units
specify units)
per
Mass
Conc.
Mass
Conc.
Y
reported)
instructions)
c
Total Residual Chlorine
w
4.7
Is non -contact cooling water discharged (or will it be discharged)?
❑✓ Yes ❑ No 4 SKIP to Section 5.
4.8
Provide data as requested in the table below.t See instructions forspecifics.)
Number of
Maximum Daily
Average Daily
Source
m
C)
Parameter or Pollutant
Analyses
Discharge
Discharge
(use codes
0
(if actual data
s eci units
(specify units
per
Mass Conc.
Mass Conc.
reported)
instructions)
Chemical oxygen demand (COD)
1
112 mg/I
0
Total organic carbon (TOC)
1
1.23 mg/I
SECTION•
r
5.1
Except for stormwater water runoff, leaks, or spills, are any of the discharges you described in Sections 1 and 3 of this
application intermittent or seasonal?
❑ Yes 4 Complete this section. ✓❑ No 4 SKIP to Section 6.
30
5.2
Briefly describe the frequency and duration of flow.
SECTION
Briefly describe any treatment system(s) used (or to be used).
6.1
E
m
a
E
d
'Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 GFFK 1315 for the analysis of pollutants or pollutant
parameters or required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2E (revised 3-19) Page 2

EPA
Identification
Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC3640006646
NCO027332 NA Chatuge Hydro Plant (CTH) OMB No. 2040-0004
SECTIONOTHER
INFORMATION1
7.1
Use the space below to expand upon any of the above items. Use this space to provide any information you believe the
reviewer should consider in establishing permit limitations. Attach additional sheets as needed.
c
0
0
c
m
SECTIONI
CERTIFICATION STATEMENT (40
8.1
In Column 1 below, mark the sections of Form 2E that you have completed and are submitting with your application.
For each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note that
not all applicants are required to provide attachments.
Column 1
Column 2
❑✓ Section 1: Outfall Location
❑ w/ attachments (e.g., responses for additional outfalls)
❑✓ Section 2: Discharge Date
❑ w/ attachments
❑✓ Section 3: Waste Types
❑ w/ attachments
d
❑✓ Section 4: Effluent Characteristics
❑ w/ attachments
E
❑✓ Section 5: Flow
❑ w/ attachments
c
❑✓ Section 6: Treatment System
❑ w/ attachments
�a
❑ Section 7: Other Information
❑ w/ attachments
d
r-
c
❑✓ Section 8: Checklist and Certification Statement
❑ w/ attachments
m
8.2
Certification Statement
WA
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. 1 am aware that there are significant penalties for submitting false information, including the
possibility of fine and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
James D. Evans
Plant Manager, Hydro Generation Hiwassee Plant Group
Signature
Date signed
20��
Fel
ruav
EPA Form 3510-2E (revised 3-19) Page 3