ML21202A224

Tennessee Valley Authority (TVA)- Watts Bar Nuclear Plant (WBN)- NPDES Permit No. TN0020168-Application Request for Permit Renewal

ML21202A224
Person / Time
Site:	Watts Bar
Issue date:	07/02/2021
From:	Pearman P Tennessee Valley Authority
To:	Janjic V Document Control Desk, Office of Nuclear Reactor Regulation, State of TN, Dept of Environment & Conservation
References
TN0020168
Download: ML21202A224 (110)

Text

-- --- ------------------------

TENNESSEE

~ VALLEY AUTHORITY 1101 Market Street, BR 2C, Chattanooga, Tennessee 37402 Sent Via Electronic Transmittal July 2, 2021 Mr. Vojin Janji6 (water.permits@tn .gov)

Manager, Water-Based Systems Division of Water Resources Tennessee Department of Environment and Conservation William R. Snodgrass Tennessee Tower 312 Rosa L. Parks Avenue, 11th Floor Nashville, Tennessee 37243

Dear Mr. Janji6:

TENNESSEE VALLEY AUTHORITY (TVA)-WATTS BAR NUCLEAR PLANT (WBN)- NPDES PERMIT NO. TN0020168-APPL ICATION REQUEST FOR PERMIT RENEWAL TVA requests that a renewal NPDES permit be issued for WBN operations, which will expire on December 31, 2021. Enclosed is an NPDES application package, which includes completed EPA Form 1, site map, Form 2C, flow schematic, and a permit address form. Sampling for the analytical data provided in this application occurred in February 2021 and historical data were compiled from the period of July 2018 through February 2021.

TVA would appreciate consideration of the following in the renewed permit.

OSN 101, IMP 103, and OSN 113

1. Please note in Form 2C Table B Section 2, Organic Toxic Pollulants, the lab analyzed four grab samples individually instead of compositing in the laboratory prior to analyses, all results were nondetect and TVA does not believe the analysis method affected the results.

Additional Requests

1. TVA requests that the following language be retained in Part I.A. to avoid the need for preparing a separate water quality certification for the Nuclear Regulatory Commission.

This TN-NPDES permit also constitutes the State's certification under Section 401 of the Clean Water Act for the purpose of obtaining any federal license for activities resulting in the discharges covered under the TN-NPDES permit.

2. Enclosed is a summary of the Reasonable Potential (RP) evaluation and whole effluent toxicity test results since 1994. As further described in the RP evaluation, TVA requests no changes from the current biomonitoring conditions at OSN 101, and 102 and that the permit language maintain consistent with the current Biocide Corrosion Treatment Plan (BCTP).

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Mr. Vojin Janjic Page2 July 2, 2021

3. The receiving stream for discharges from WBN (Tennessee River - Chickamauga Reservoir in Rhea County) is currently classified as an Exceptional Tennessee Water. For previously authorized discharges to such waters, TDEC Rule 0400-40-03-.06 requires a review of updated alternatives analysis information in cases where the discharge results in degradation above a de minimis level.

The withdrawal rate for the intake pumping station located in Chickamauga Reservoir will be approximately 75 MGD and the SCCW intake withdrawal rate will remain approximately 174 MGD. Of the total withdrawal of approximately 249 MGD, approximately 42 MGD is consumptive (primarily cooling tower evaporation) with the remainder returning to the stream via permitted outfalls. The consumption amounts to only approximately 1.3% of the 7Q10 stream flow (3231.5 MGD). Therefore, water withdrawals will continue to be de minimis as described in TDEC Rule 0400:..40-03-.06.

No thermal degradation is proposed or anticipated. TVA has performed an extensive hydrothermal analysis of the WBN heat dissipation system. This analysis ind[cates that near-field (and thus far-field) thermal impacts are insignificant and can be managed within the limitations of the current NPDES permit.

TVA appreciates your consideration of the information provided herein in the development of the reissued permit. If you have questions or need additional information, please contact Crystal Bishop by email at clbishopO@tva.gov or by phone at (423) 314-3820.

Sincerely, Paul J. Pearman Senior Manager Water Permits, Compliance, and Monitoring .

Enclosure cc (Electronic Distribution w/ Enclosure):

Ms. Jennifer Innes (Jennifer.lnnes@tn.gov)

Manager, Chattanooga Environmental Field Office Division of Water Resources 1301 Riverfront Parkway, Suite #206 Chattanooga, Tennessee 37402 bJ.S. Nuclear Regulatory Commission \

Attn: Document Control Desk Washington, DC 20555

EPA Identification Number NPDES Permrt Number Facility Name I Form Approved 03,1)5/19 TN2640030035 TN0020168 I TVA Watts Bar Nuclear Plant 0MB No. 2040-0004 Form U.S. Environmental Protection Agency Application for NPDES Permit to Discharge Wastewater NPDES 1 SEPA GENERAL INFORMATION SECTION 1. ACTIVITIES REQUIRING AN NPDES PERMIT (40 CFR 122.21(1) and (f)(1))

1.1 Applicants Not Required to Submit Form 1 Is the facility a new or existing publicly owned Is the facility a new or existing treatment works 1.1.1 1.1.2 treatment works? treating domestic sewage?

If yes, STOP. Do NOT complete 0 No If yes, STOP. Do NOT 0 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, operation or a concentrated aquatic animal commercial, mining, or silvicultural facility that is production facility? currently discharging process wastewater?

Yes Complete Form 1 and Form 28.

0 No 0 Yes Complete Form No 1 and Form 2C.

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?

Yes and Complete Form 1 Form 20.

0 No Yes Complete Form 0 No 1 and Form 2E.

1.2.5 Is the facility a new or existing facility whose discharge is composed entirely of stormwater associated with industrial activity or whose discharge is composed of both stormwater and non-storm water?

Yes Complete Form 1 and Form 2F 0 No unless exempted by 40CFR 122.26(b)(14)(x) or SECTION 2. NAME, MAILING ADDRESS, AND LOCATION (40 CFR 122.21(f)(2))

2.1 Facility Name Tennessee Valley Authority (TVA) - Watts Bar Nuclear Plant C

~ 2.2 EPA Identification Number ra 8

...I TN2640030035

-0 C

ra 2.3 Facility Contact

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~

-0 Name (first and last)

Beth Ann Jenkins I Title I Phone number Plant Manager (423) 365 -3364

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C) Email address

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• bajenkins@tva.gov

==cu 2.4 Facility Mailing Address E

z"' Street or P.O. box PO Box 2000, LP 4J -C WBN City or town Spring City I State TN I ZIP code 37381 EPA Form 3510-1 (revised 3-19) Page 1

EPA Identification Number NPOES Permit Number Facility Name I Form Approved 03.US/19

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TN264003OO35 2.5 Facility location I TNOO2O168 I TVA Watts Bar Nuclear Plant 0MB No. 2040-0004

.,,  ::I

!,! C Street, route number, or other specific identifier

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<O Hwy 68 Nuclear Plant Rd, Spring City, TN 37381 c,O

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• 0 County name County code {if known)

s ll Rhea

- 0 ell ...J E -o City or town State ZIP code n, C z II) Spring City TN 37381 SECTION 3. SIC AND NAICS CODES (40 CFR 122.21(1)(3))

3.1 SIC Code(s) Description (optional) 4911 Electric Services

• Electric power generation, transmission or distribution ell "O

0

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z: 3.2 NAICS Code(s) Description (optional)

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221113 Electric power generation* nuclear en SECTION 4. OPERATOR INFORMATION (40 CFR 122.21(f)(4))

4.1 Name of Operator Tennessee Valley Authority C:

~ 4.2 Is the name you listed in Item 4.1 also the owner?

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.g 0 Yes 0 No

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.s 4.3 Operator Status f!

Q) 0 Public-federal D Public-state D Other public (specify) 0 C.

D Private D Other {specify) 4.4 Phone Number of Operator (423) 365-3364 C

4.5 Operator Address

.2 Street or P.O. Box 7u E-o

... Q) Hwy 68 Nuclear Plant Rd

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City or town Spring City I State TN I ZIPcode 37381

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a. Email address of operator 0 bajenkins@tva.gov SECTION 5. INDIAN LAND (40 CFR 122.21(f)(S))

-~ -g 5.1 Is the facility located on Indian Land?

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.E ..J Yes 0 No EPA Form 3510-1 (revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03,1)5/19 0MB No. 2040-0004 6.1 Existing Environmental Pennits (check all that apply and print or type the corresponding pennit number for each)

~

C CIJ IZl NPDES (discharges to surface D RCRA (hazardous wastes) D UIC (underground injection of E

0C: .,, water) fluids)

-~ 1§ C: ...

TN0020168 / TNR051343 w

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CIJ D PSD (air emissions) D Nonattainment program (CAA) D NESHAPs (CAA)

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w D Ocean dumping (MPRSA) D Dredge or fill (CWA Section 404) 0 Other (specify)

Title V Air* 463822 SECTION 7. MAP (40 CFR 122.21(f)(7))

7.1 Have you attached a topographic map containing all required information to this application? (See instructions for C. specific requirements.)

0 Yes D No D CAFO-Not Applicable (See requirements in Form 28.)

SECTION 8. NATURE OF BUSINESS (40 CFR 122.21(f)(8))

8.1 Describe the nature of your business.

Production of electrical power via thermonuclear fission and associated operations.

CIJ Watts Bar Nuclear Plant is located at approximately Tennessee River Mile 528. Units 1 and 2 are each rated to C:

"iii produce 1,270 MW of electricity at full capacity.

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SECTION 9. COOLING WATER INTAKE STRUCTURES (40 CFR 122.21(1)(9))

9.1 Does your facility use cooling waler?

.... CIJ

.,, 0 Yes No SKIP to Item 10.1.

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-,a ....  :::i 9.2 Identify the source of cooling water. (Note lhat facilities that use a cooling water intake structure as described at

==Cl.!:;g 40 CFR 125, Subparts I and J may have additional application requirements at 40 CFR 122.21 (r). Consult with your CCI)

=0 ..><: 41 NPDES permitting authority to determine what specific information needs to be submitted and when.)

0"' The closed-cycle cooling system at WBN has one cooling water intake structure (CWIS) located in the inflow zone of

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-= Chickamauga Reservoir {Watts Bar Dam tailwater) that w ithdraws cooling water via pumpi ng; and a gravity-driven Supplemental Condenser Cooling Water (SCCW) diversion intake located in the forebay of Watts Bar Reservoir.

SECTION 10. VARIANCE REQUESTS (40 CFR 122.21(1)(10))

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 1ii CIJ when.)

i r::r 41 D Fundamentally different factors (CWA D Water quality related effluent limitations (CWA Section et:: Section 301(n)) 302(b)(2))

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u C: D Non-conventional pollutants (CWA D Thermal discharges (CWA Section 316(a))

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Section 301(c) and (g))

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0 Not applicable EPA Form 35 10-1 (revised 3-19) Page 3

EPA Identification Number Facility Name Form Approved 03~5119 0MB No. 2040-0004 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 a licants are re uired to rovide attachments.

Column 1 Column2

[Z] Section 1: Activities Requiring an NPDES Permit w/ attachments

[Z] Section 2: Name, Mailing Address, and Location w/ attachments

[Z] Section 3: SIC Codes w/ attachments IZ1 Section 4: Operator Information w/ attachments IZ1 Section 5: Indian Land w/ attachments

[Z] Section 6: Existing Environmental Permits w/ attachments w/ topographic IZ1 Section 7: Map IZ1 ma D w/ additional attachments

[Z] Section 8: Nature of Business w/ attachments IZI Section 9: Cooling Water Intake Structures IZl w/ attachments Section 10: Variance Requests w/ attachments IZI Section 11 : Checklist and Certification Statement w/ attachments 11.2 Certification Statement I certify under penalty of law that this document and all attachments were prepared under my direction or supeNision 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 tiUe Beth Ann Jenkins Plant Manager, Watts Bar Nuclear (WBN)

Date signed 7 O( /d-02....!

EPA Form 3510-1 (revised 3-19) Page4

Tennessee Valley Authority Watts Bar Nuclear Plant Rhea County, Tennessee Decatur Quadrangle June 2021

EPA Identification Number NPDES Permit Number Facilily Name I Form Approved 03/05/19 TN2640030035 TN0020168 I TVA Watts Sar Nuclear Plant U.S. Environmental Protection Agency 0MB No. 2040-0004 Application for NPDES Permit to Discharge Wastewater EXISTING MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURE OPERATIONS SECTION 1. OUTFALL LOCATION (40 CFR 122.21(g)(1))

1.1 Provide information on each of the facility's outfalls in the table below.

Outfall Receiving Water Name Latitude Longitude Number OSN 101 Tennessee River 35* 35' 30" N 84. 47* 15" w OSN 102 Unnamed Tributary to Te~ 35* 35' 45" N 84" 47' 30" w IMP 103 Tennessee River via OSN1f:j 35* 36' o" N 84° 47' 30 " w SECTION 2. LINE DRAWING (40 CFR 122.21(g)(2))

2.1 Have you attached a line drawing to this application that shows the water flow through your facility with a water balance? (See instructions for drawing requirements. See Exhibit 2C--1 at end of instructions for example.)

0 Yes D No SECTION 3. AVERAGE FLOWS AND TREATMENT (40 CFR 122.21(g)(3))

3.1 For each outfall identified under Item 1.1, provide average now and treatment information. Add additional sheets if necessa .

..Outfall Number'* OSN 101 Operations Contributing to Flow Operation Average Flow Diffuser Discharge (see form 2C OSN 101 attachment) 57.31 mgd c

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E mgd ni

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mgd C:

nl Ill mgd 3::

0 u: Treatment Units a,

Cl Description Final Disposal of Solid or

~ (include size, flow rate through each treatment unit, Code from a, Liquid Wastes Other Than Table 2C-1

~ retention time, etc. b Dischar e see Form 2C OSN 101 attachment see attachment see attachment EPA Form 3510-2C (Revised 3-19) Page 1

EPA Identification Number NPDES Permit Numbef Faality Name Form Approved 03ill5/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant 3.1 cont.

Yard holding pond overflow weir (emergency outfall) 0.000 mgd provides an alternative path for the diffuser discharge point mgd mgd mgd Treatment Units Description Final Disposal of Solid or (include size, flow rate through each treatment unit, Code from Liquid Wastes Other Than retention time, etc.) Table 2C-1 bv Discharae Discharge to surface water 4-A (Also see OSN 101)

... Outfall Numbe,... IMP 103 Operations Contributing to Flow Operation Averaae Flow low Volume Waste Holding Pond (See OSN 101 attachment) [0.347) mgd mgd mgd mgd Treatment Units Description Final Disposal of Solid or (include size, flow rate through each treatment uni~ Code from Liquid Wastes Other Than retention time, etc. Table 2C-1 b Discha e see Form 2C OSN 101 attachment 3.2 Are you applying for an NPDES permit to operate a privately owned treatment works?

i0~~-~------

~ D Yes 0 No-+- SKIP to Section 4.

, 3.3 ------------- ------------- -----~

Have you attached a list that identifies each user of the treatment works?

0 Yes D No EPA Form 3510-2C (Revised 3-19) Page2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19 0MB No. 2040-0004 4.1 Except for storm runoff, leaks, or spills, are any discharges described in Sections 1 and 3 intermittent or seasonal?

0 Yes D No -+ SKIP to Section 5.

4.2 Outfall Operation Average Average Long-Term Maximum Duration Number (list}

Da srNeek Months/Year Avera e Dail Backwash SCCW Intake <7 days/Week <12 months/year 0.019 mgd mgd <7 days

~

0 OSN 114 days/week months/year mgd mgd days u::

C:

QJ days/week months/year mgd mgd days

=

.§ daysf..veek months/year mgd mgd days

..E days/week months/year mgd mgd days days/week months/year mgd mgd days days/week months/year mgd mgd days days/week months/year mgd mgd days days,\veek months/year mgd mgd days SECTION 5. PRODUCTION (40 CFR 122.21(gl(5))

5.1 Do any effluent limitation guidelines (EL Gs) promulgated by EPA under Section 304 of the CWA apply to your facility?

No -+ SKIP to Section 6.

0 Yes tn 5.2 Provide the followinQ information on applicable ELGs.

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ELG Cateaorv ELG Subcategory Regulatorv Citation QJ

a Steam Electric Power Plant 40 CFR 4023

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5.3 Are any of the applicable ELGs expressed in terms of production (or other measure of operation)?

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C: Yes 0 No -+ SKIP to Section 6.

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.!!! 5.4 Provide an actual measure of daily production expressed in terms and units of applicable ELGs.

.E Outfall Unit of

i Operation, Product, or Material Quantity per Day "C

Q)

Number Measure tn Cl"'

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0

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e EPA Form 3510-2C (Revised 3-19) Page 3

EPA Identification Number NPOES Pennit Nurrbe< Facility Name Form Approved 03/05/19 0MB No. 2040-0004 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?

0 Yes 0 No SKIP to Item 6.3.

6.2

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Affected Final Compliance Dates E

G)

Brief Identification and Description of Outfalls Source(s) of i; Project (list outfall Discharge Required Projected Q. number

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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)

D Yes D No 0 Notapplicable SECTION 7. EFFLUENT AND INTAKE CHARACTERISTICS(40 CFR 122.21(g)(7))

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?

Yes 0 No 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 -- 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 in

• c requested and attached the results to this application package?

~

IZ] Yes D No; a waiver has been requested from my NPDES permittino authoritv for all oollutants at all outfalls.

.c

(.) Table 8. Toxic Metals Cyanide Total Phenols and 0111anic Toxic Pollutants

_,.,Cl> 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.)

IZ] Yes -+ SKIP to Item 7.8.

No C:

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G) 7.5 Have you checked "Testing Required" for all toxic metals, cyanide, and total phenols in Section 1 of Table B?

s e IZ] Yes w 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.)

Steam Electric Power Plant 0 Volatile 0Acid Base/Neutral Pesticide Volatile Acid Base/Neutral Pesticide Volatile Acid Base/Neutral D Pesticide EPA Form 3510-2C (Revised 3-19) Page4

EPA ldenuficaUoo Number NPDES Permit Number Facility Name I Form Approved 03/051 19 TN2640030035 I TN0020168 I TVA Watts Bar Nuclear Plant 0MB 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 7.67 0 Yes D 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?

0 Yes D No 7.9 Have you provided (1) quantitative data for those Section 1, Table 8, 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?

IZ] Yes D No 7.10 Does the applicant qualify for a small business exemption under the criteria specified in the instructions?

D Yes -+ Note that you qualify at the top of Table B, 0 No "C

a.,

then SKIP to Item 7.12.

I

.!: 7.11 Have you provided (1) quantitative data for those Sections 2 through 5, Table 8, pollutants for which you have i: determined testing is required or (2) quantitative data or an explanation for those Sections 2 through 5, Table B, 0

u pollutants you have indicated are 'Believed Present" in your discharge?

~ 0 Yes D No

• c:

Table C. Certain Conventional and Non-Conventional Pollutants

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u

~

l'<I 7.12 Have you indicated whether pollutants are "Believed Present* or "Believed Absent" for all pollutants listed on Table C

.c u for all outfalls?

a.,

l'<I 0 Yes D No

.E 7.13 Have you completed Table C by providing (1) quantitative data for those pollutants that are limited either directly or "O

C indirectly in an ELG and/or (2) quantitative data or an explanation for those pollutants for which you have indicated l'O C

"Believed Present"?

a,

I IZ] Yes D No ffi 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?

0 Yes D 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?

0 Yes D No Table E. 2,3,7,8-Tetrachlorodibenzo-o-Dioxin (2,3,7,8-TC0Dl 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?

D Yes-+ Complete Table E. 0 No-+ SKIP to Section 8.

7.17 Have you completed Table Eby reporting qualitative data for TCDD?

D Yes D No SECTION 8. USED OR MANUFACTURED TOXICS (40 CFR 122.21(g)(9))

8.1 Is any pollutant listed in Table Ba substance or a component of a substance used or manufactured at your facility as "C an intermediate or final product or byproduct?

~

ti D Yes 0 No -+ SKIP to Section 9.

l'<I

i t1 8.2 List the pollutants below.

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!E 0 1. 4. 7.

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a., 2. 5. 8.

Ill

3. 6. 9.

EPA Form 3510.2G (Revise<l 3-19) Page 5

EPA Identification Number NPOES Permit Number Facility Name Form Approved 03/05/19 0MB No. 2040-0004 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?

0 Yes D No SKIP to Section 10.

9.2 ldenti the tests and their u ses below.

Test(s) Purpose of Test(s) Date Submitted Pennittin Semi Annual Biotoxicity Acute Whole Effluent Submitted with DMR Toxicit 0 Yes No Yes No Yes No SECTION 10. CONTRACT ANALYSES (40 CFR 122.21(9)(12))

10.1 Were any of the analyses reported in Section 7 performed by a contract laboratory or consulting firm?

@ Yes D No SKIP lo 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 GEL Laboratories LLS Laboratory address 2040 Savage Road

....u Charleston, SC 29409 iC:

0 u Phone number (843) 556-8171 Pollutant(s) analyzed All parameters except field parameters.

SECTION 11. ADDITIONAL INFORMATION (40 CFR 122.21(9)(13))

11 .1 Has the NPDES permitting authority requested additional information?

C: 0 Yes 0 No SKIP lo Section 12.

~

"'§ 11 .2 List the information requested and attach ii to this application.

.E

.E 1. 4.

iu C:

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s

'O 5.

3. 6.

EPA Fonm 351 0.2C (Revise<! ~19) Page6

EPA Identification Number Facility Name Form Approved 03/05/19 0MB No. 2040-0004 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 a licants are re uired to com lete all sections or rovide attachments.

Column 1 Column 2 0 Section 1: Outfall Location 0 w/ attachments 0 Section 2: Line Drawing IZI w/ line drawing w/ additional attachments Section 3: Average Flows and wt list of each user of 0 Treatment 0 w/ attachments privately owned treatment works 0 Section 4: Intermittent Flows wt attachments 0 Section 5: Production w/ attachments wt optional additional sheets describing any 0 Section 6: Improvements wt attachments additional pollution control lans wt request for a waiver and w/ explanation for identical supporting information outfalls cC1> w/ small business exemption E

.!! request w/ other attachments

"' Section 7: Effluent and Intake in C

0 Characteristics 0 w/ Table A 0 w/Table B

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0 w/Table C 0 w/Table D t: w/ analytical results as an u

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0 w/Table E attachment C Section 8: Used or Manufactured

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0 Toxics Section 9: Biological Toxicity w/ attachments 0 w/ attachments

(.)

.=

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Tests u

0 Section 10: Contract Analyses w/ attachments 0 Section 11 : Additional Information wt attachments Section 12: Checklist and 0 Certification Statement w/ attachments 12.2 Certification Statement t 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 Beth Ann Jenkins Plant Manager Date signed I IO l l202 I EPA Form 3510-2C (Revised 3-1 9) Page 7

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19 TN2640030035 0MB No. 2040-0004 TN0020168 TVA Watts Bar Nuclea r Plant U.S. Environmental Protection Agency Application for NPDES Permit to Discharge Wastewater EXISTING MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURE OPERATIONS SECTION 1. OUTFALL LOCATION (40 CFR 122.21(g)(1))

1.1 Provide information on each of the facility's outfalls in the table below.

C Outfall Receiving Water Name Latitude Longitude

8 Number

"'0

(.)

...J IMP107 Tenn essee River 35° 36' o" N 84° 47' 30" w 0

ni

, OSN 113 Tennessee River 35° 35 ' 45" N 84° 46 ' 45" w OSN 114 Te nn essee River 35° 37' 15" N 84° 47' 0 w SECTION 2. LINE DRAWING (40 CFR 122.21(g)(2))

Cl 2.1 Have you attached a line drawing to this application that shows the water flow through your facility with a water

• = *=

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...J E ~

balance? (See instructions for drawing requirements . See Exhibit 2C-1 at end of instructions for example.)

C IZ] Yes D No SECTION 3. AVERAGE FLOWS AND TREATMENT (40 CFR 122.21(g)(3))

3.1 For each outfall identified under Item 1.1, provide average flow and treatment information. Add additional sheets if necessa .

• • Outfall Number** IMP107 Operations Contributing to Flow Operation Average Flow

- C Q)

E Lined/Unlined Ponds {See OSN 101 att achment} mgd mgd io

~

1- mgd

-0 C

"' mgd

~

0 u::: Treatment Units Q)

Cl Description Final Disposal of Solid or E (include size, flow rate through each treatment unit, Code from Liquid Wastes Other Than Q)

Table 2C-1

~ retention time, etc. b Dischar e see OSN 101 att achment EPA Form 3510-2C (Revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19 TN2640030035 0MB No. 2040-0004 TN0020168 TVA Watts Bar Nuclear Plant 3.1 cont.

Operation Average Flow Ul CT Bas in blowdown (noncontact cooling water) 201.89 mgd and Supplemental Condenser Cooling W ater bypass mgd mgd mgd Treatment Units Description Final Disposal of Solid or Code from (include size, flow rate through each treatment unit, Liquid Wastes Other Than Table 2C-1 retention lime, etc.) by Discharge "O Di scharge to surface water 4-A CV

I

~C:

0 0

C:

-e CV E

IO 1-

"0 C:

• • Outfall Number** OSN 114 IO Operations Contributin to Flow

~

0 Operation Average Flow u:::

CV Cl SCCW Intake screen backwash water 0.019 mgd E

CV

~ mgd mgd mgd Treatment Units Description Final Disposal of Solid or (include size, flow rate through each treatment unit, Code from Liquid Wastes Other Than Table 2C-1 retention time, etc. b Dischar e Discharge to surface water 4-A 3.2 Are you applying for an NPDES permit to operate a privately owned treatment works?

jU~l u , 1 - -D- -Yes 0 No~ SKIP to Section 4.

1 - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - -------------<

, 3.3 Have you attached a list that identifies each user of the treatment works?

D Yes D No EPA Form 3510-2C (Revised 3-19) Page 2

WBN OSN 101 Form 2C Attachment

1. Outfall No. 2. Operations Contributing Flow 3. Treatment OSN 101 a. Operation b. Average Flow (MGD) a. Description b. List Codes from Table 2C-1 Diffuser Discharge (receives the following) 57.31 2 K (1) Yard Holding Pond 1.50 MGD Wastes are treated in a 22-acre 1 u pond, a) Turbine Bldg Station Sump (TBSS} alternate [0MGD] (acreage for 101 and 102 2 K path combined) b) Cooling Tower Blowdown (CTBD) alternate [0 MGD] providing 4 A Path sedimentation/neutralization.

c) Emerg. Raw Cooling Water (ERCW) alternate [0MGD] Discharge through multiport path diffuser to surface water d) Raw Cooling Water (RCW) alternate path [0MGD] Discharge through muliport diffuser to surface water e) Ice condenser chiller/air coolers alternate [0MGD]

path f) Miscellaneous discharges, includes: [0.7373 MGD]

Non-rad Demin Water discharges to Yard [0.011 MGD]

Drains Service building sump [0.020 MGD]

Diesel Generator (D/G) Building Sump [0.0001 MGD] Leak collection with oil skimming X X Emergency D/G Building Sump [0.0001 MGD]

CCW Pump Station Sump [0.0001 MGD]

NaOCL Building Sump and Dike [0.001 MGD] Sedimentation 1 u High Pressure Fire Protection (HPFP) [0.003 MGD]

Flushes Potable water line leaks [0.001 MGD]

Storm Water Runoff [0.699 MGD]

Rainwater releases from secondary [0.001 MGD]

containment for bulk chemical storage Groundwater sump [0.001 MGD]

g) Condenser cleaning, cooling tower cleaning, [n] Filtration to 5 microns for asbestos X X and worker decon h) Training Center Cooling Tower Blowdown [0.001 MGD]

i) Trash sluice water, receives: [0.1878 MGD]

Station drainage sumps {0.072 MGD]

Emergency raw cooling water strainer [n]

leakage ERCW Strainer backwash [0.108 MGD]

ERCW Traveling Screen backwash [0.0078 MGD]

(j) Precipitation, Less evaporation [0.048 MGD]

k) Cooling tower desilting basin [0.002 MGD] Sedimentation 1 u I) Low Volume Waste Hold ing Pond (IMP 103) [0.347 MGD] Unlined 3.7-acre pond with 1 u

[IMP 103] receives : sedimetation and neutralization Precipitation, Less Evaporation [0.0053 MGD]

Vendor water treatment RO reject [0.26 MGD]

Turbine building station sump, receives : [0.2007 MGD] Floor drain co llection w/oil X X skimm ing Metal cleaning wastes [n]

Laboratory waste [0.0002 MGD]

Neutral Waste Tank [n]

Potable Water Line Le aks [0.0002 MGD]

System Leakage & Maintenance [0.1993 MGD]

High Pressure Fire Protection [0.001 MGD]

discharges Lined/Unlined Ponds alternate path (when [n]

no metal cleaning activity has occurred since last discharge) m) ERCW Header flushes [n]

n) Asbestos micro filtrate (condenser tube [n]

cleaning) o) Discharge from IMP 107 (Lined/Unlined [0.033 MGD] Lin ed pond 1 MG (0.26 acre) 1 u

[IMP 107] Ponds) receives :

Unlined pond 5 MG (1.3 acre) 2 C,K provides sedimentat ion, precip.,

neutralization Precip itation, Less Evaporation [0.002 MGD]

Metal Cleaning wa stes [n]

Storm water ru noff [0.0001 MGD]

Drum rinsing [0.0001 MGD]

Drum dewateri ng [0.0001 MGD] Floor drain collection w/oil X X skimming Diesel cleaning coolant [0.0001 MGD]

Turbine Building Station Sump [0.0306 MGD]

alternate path Asbestos micro filtrate (CT cleaning [n]

activity)

(2) Cooling Tower Blowdown (CTBD), receives : 45.773 MGD

a) Liquid Radwaste system, which receives flow [0.0040 MGD] Ion Exchange and Filtration System 2 J from the following :

Primary Laboratory Wastes [0.0001 MGD]

Radioactive Floor and Equipment [0.0039 MGD]

Drains, Tanks, and Sumps 2 J b) Steam Generator Blowdown [0.36 MGD]

c) Condensate Denim Cleanup [0.0010 MGD] Neutralization 2 K d) U2 CT Basin blowdown (noncontact cooling [45.408 MGD]

water)

{3) Misc. Cooling Water, receives: 10.62 MGD a) Emergency Raw Cooling Water [5.31 MGD]

b) Raw Cooling Water [4.91 MGD]

c) Ice Condenser Chiller/Various Air coolers [0.400 MGD]

[n] denotes negligible flow

EPA Identification Number NPDES Permit Number FoolfyN~

2 4 TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant OSN 101 OMB No o o-0oo4

• 1 ,.*-*1J~lf~::l,11 1 h J*1**1~1 11,1 ., J~l*.i:I~ IIIIJ~J*1* ****~*r*1,11 f.'t'f!ll II: ~,lliltllA,J;u Effluent Intake (Optional)

Waiver Pollutant Units Maximum Maximum Long-Term Requested (if applicable)

(specify) Daily Monthly Average Daily Number of Long-Term Number of 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.

Biochemical oxygen demand Concentration mg/L <1.00 1 <1.00 1 1.

(BOD s) Mass Chemical oxygen demand Concentration mg/L 11.6 1 11.6 1 2.

(COD) Mass Concentration mg/L 2.19 1 1.80 1

3. Total organic carbon (TOC)

Mass Concentration mg/L 6.99 1 3.40 1

4. Total suspended solids (TSS)

Mass Concentration mg/L 0.0700 1 0.0954 1

5. Ammonia (as N)

Mass

6. Flow Rate MGD 137.30 57.31 791 Temperature (winter)

• c *c 32.8 18.5 461 8.7 4 7.

Temperature (summer)

• c *c 31.3 25.9 458 N/A 8.

pH (minimum)

Standard units s.u. 8.34 5 7.89 4 pH (maximum)

Standard units s.u. 8 .70 5 8.08 4 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 Nor 0. See instructions and 40 CFR 122.21 (e)(3).

EPA Form 3510-2C (Revised 3-1 9) Page 9

This page intentionally left blank.

EPA Identification Number NPDES Penmit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 101

. ,- 1*:n .. 1*1 1 ; ; a * ~ 1!!1111**111111::.1:1: ~111a..-.,1~11**1 ~,rr* 1~1,_, ** ***::.1********1~--'"""'t'II *:, Iii- ,, ..*

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (req uired) (if available)

(if available l Value 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 Antimony, total Concentration ug/L <1 .00 1 <1. 00 1 1.1 (7 440-36-0) 0 Mass Arsenic, total Concentration ug/L <2.00 1 <2.00 1 1.2 (7 440-38-2) 0 Mass Beryllium, total Concentration ug/L <0.200 1 <0.200 1 1.3 (7 440-41 -7) 0- Mass Cadmium, total Concentration ug/L <0.300 1 <0.300 1 1.4 (7 440-43-9) 0 Mass Chromium, total Concentration ug/L <3.00 1 <3. 00 1 1.5 (7 440-47-3) 0 Mass Copper, total Concentration ug/L 2.66 1 0.849 1 1.6 (7 440-50-8) 0 Mass Lead, total Concentration ug/L <0.500 1 <0.500 1 1.7 (7 439-92-1) 0 Mass Mercury, total Concentration ng/L 3.19 4 2.01 4 1.8 (7439-97-6) 0 Mass Nickel, total Concentration ug/L <0.600 1 <0 .600 1 1.9 (7440-02-0) 0 Mass Selenium, total Concentration ug/L <2. 00 1 <2.00 1 1.10 (7782-49-2) 0 Mass Silver, total Concentration ug/L <0. 300 1 <0.300 1 1.11 (7440-22-4) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 11

EPA Identification Number NPDES Perm~ Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 101

. . g,.., 11JJ J11r*1*~ ~1: INIJL'9*1~11I* .,_, ,.,.._, ,. 11 . . :.IIJI l-t'!.wlL."tl'"'l al::I Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required} (if available}

(if available)

Value Thallium, total Concentration ug/L <0.600 1 <0.600 1 1.12 (7 440-28-0) IZl Mass Zinc, total Concentration ug/L 20.6 1 5.82 1 1.13 (7 440-66-6) IZl Mass Cyanide, total Concentration ug/L <1.67 4 <1.67 4 1.14 (57-12-5) IZl Mass Concentration ug/L 0.425 4 <1.67 4 1.15 Phenols, total IZl Mass Section 2. Organic Toxic Pollutants (GC/MS Fraction-Volatile Compounds)

Acrolein

• Concentration ug/L <l.67 4 <1.67 4 2.1 (107-02-8) IZl Mass Acrylonitrile* Concentration ug/L <1.67 4 <1.67 4 2.2 (107-13-1) IZl Mass Benzene

• Concentration ug/L <0.333 4 <0.333 4 2.3 (71-43-2) IZl Mass Bromoform

• Concentration ug/L <0.333 4 <0.333 4 2.4 (75-25-2) IZl Mass Carbon tetrachloride

• Concentration ug/L <0.333 4 <0.333 4 2.5 (56-23-5) IZl Mass Chlorobenzene

• Concentration ug/L <0.333 4 <0.333 4 2.6 (108-90-7) IZl Mass Chlorodibromomethane

• Concentration ug/L <0.333 4 <0.333 4 2.7 (124-48-1) IZl Mass Chloroethane

• Concentration ug/L <0.333 4 <0.333 4 2.8 (75-00-3) IZl Mass

• Denotes four grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TV A does not believe the analysis method affected the results.

EPA Form 3510-2C (Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN0020168 0MB No. 2040-0004 TN2640030035 TVA Watts Bar Nuclear Plant OSN 101 1 3 :* *-"'~I'll--*

..,,.. 11]:a 11 .r!, ~=1 : ,,,_ 11 ,u1a11 '!"J.P'f, 1,111 . . 1 ** .,_ ' l 1**~1~1f.""l"r!U ~:1

• Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Maximum Maximum Long-(and CAS Number, if available) Required Believed (specify) Average Number Number Present Daily Monthly Term Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available) Value (if available l 2-chloroethylvinyl ether* Concentration ug/L <1.67 4 <1.67 4 2.9 (110-75-8)

[Z]

Mass

• Concentration ug/L <0 .333 4 <0.333 4 2.10 Chloroform (67-66-3) [Z]

Mass Dichlorobromomethane

• Concentration ug/L <0.333 4 <0.333 4

[Z]

2.11 (75-27-4) Mass 1,1-dichloroethane

• Concentration ug/L <0.333 4 <0.333 4

[Z]

2.12 (75-34-3) Mass 1,2-dichloroethane* Concentration ug/L <0.333 4 <0.333 4

[Z]

2.13 (107-06-2) Mass 1,1-dichloroethylene

• Concentration ug/L <0.333 4 <0.333 4

[Z]

2.14 (75-35-4) Mass 1,2-dichloropropane

• Concentration ug/L <0.333 4 <0.333 4

[Z]

2.15 (78-87-5) Mass 1,3-dichloropropylene

• Concentration ug/L <0.333 4 <0.333 4

[Z]

2.16 (542-75-6) Mass Ethylbenzene

• Concentration ug/L <0.333 4 <0.333 4

[Z]

2.17 (100-41-4) Mass Methyl bromide

• Concentration ug/L <0.337 4 0 .337 4

[Z]

2.18 (74-83-9) Mass Methyl chloride

• Concentration ug/L <0.333 4 <0.333 4 2.19 (74-87-3) 0 Mass Methylene chloride

• Concentration ug/L <l.67 4 <1.67 4 2.20 (75-09-2)

[Z] Mass 1,1,2,2- tetrachloroethane

• Concentration ug/L <0 .333 4 <0.333 4 2.21 (79-34-5) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 13

• Denotes four grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TV A does not believe the analysis method affected the results.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 101

' ;1 :111 =-*** . ,. ,,., 11::a 1a1.-... *~:,: N*la."W*1~1 *1~U'f* ,~1,-1 .,.,r.. ~*1****1,.,,,,._,,,11*-~

• L-*-*

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value Tetrachloroethylene

• Concentration ug/L <0.333 4 <0.333 4 2.22 (127-18-4) IZI Mass Toluene

• Concentration ug/L <0.333 4 <0.333 4 2.23 (108-88-3) IZI Mass 1,2-trans-dichloroethylene

• Concentration ug/L <0.333 4 <0.333 4 2.24 (156-60-5) IZI Mass 1,1,1-trichloroethane

• Concentration ug/L <0.333 4 <0.333 4 2.25 (71-55-6) IZI Mass 1, 1,2-trichloroethane

• Concentration ug/L <0.333 4 <0.333 4 2.26 (79-00-5) IZI Mass Trichloroethylene

• Concentration ug/ L <0.333 4 <0.333 4 2.27 (79-01-6)

[{J Mass Vinyl chloride

• Concentration ug/L <0.333 4 <0.333 4 2.28 (75-01-4) IZI Mass Section 3. Organic Toxic Pollutants (GC/MS Fraction-Acid Compounds) 2-chlorophenol Concentration ug/L <3. 11 1 <2.82 1 3.1 (95-57-8) IZI Mass 2,4-dichlorophenol Concentration ug/L <3.11 1 <2.82 1 3.2 (120-83-2) IZI Mass 2,4-dimethylphenol Concentration ug/L <3.11 1 <2.82 1 3.3 (105-67-9) IZI Mass 4, 6-d initro-o-cresol Concentration ug/L <3.11 1 <2.82 1 3.4 (534-52-1) IZI Mass 2,4-dinitrophenol Concentration ug/L <5 .18 1 <4.70 1 3.5 (51-28-5) IZI Mass

• Denotes four grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TV A does not believe the analysis method affected the results.

EPA Form 3510-2C (Revised 3-19) Page 14

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040--0004 TVA Watts Bar Nuclear Plant OSN 101

. ** - - - **1~ g **llf'*l *J~!: M*a.-*HI l l~lr'I'* 1.,11_, u*- *T ll~f'*U~L."tlll*lm' Presence or Absence (check one) Effluent Intake (optional)

PollutanUParameter Testing Units Long-Term Maximum Maximum Long*

(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value 2-nitrophenol Concentration ug/L <3.11 1 <2.82 1 3.6 (88-75-5) 0 Mass 4-nitrophenol Concentration ug/L <3.11 1 <2.82 1 3.7 (100-02-7) 0 Mass p-chloro-m-cresol Concentration ug/L <3 .11 1 <2.82 1 3.8 (59-50-7) 0 Mass Pentachlorophenol Concentration ug/L <3.11 1 <2.82 1 3.9 (87-86-5) 0 Mass Phenol Concentration ug/L <3.11 1 <2 .82 1 3.10 (108-95-2) 0 Mass 2,4,6-trichlorophenol Concentration ug/L <3.11 1 <2.82 1 3.11 (88-05-2) 0 Mass Section 4. Organic Toxic Pollutants (GC/MS Fraction-Base /Neutral Compounds)

Acenaphthene Concentration 4.1 (83-32-9) 0 Mass Acenaphthylene Concentration 4.2 (208-96-8) 0 Mass Anthracene Concentration 4.3 (120-12-7) 0 Mass Benzidine Concentration 4.4 (92-87-5) 0 Mass Benzo (a) anthracene Concentration 4.5 (56-55-3) 0 Mass Benzo (a) pyrene Concentration 4.6 (50-32-8) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 15

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 101

• • • • • • -1"*--* *--,~ **=- -*~ :J=1; ~1 1a."W*l~J1HJ~{et:* h'll*I .... ~::.1*1* 11**1~* ....-*, 11*11ol:1*

Presence or Absence (check one) Effluent Intake (optional}

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (required} (if available)

(if available)

Value 3,4-benzofluoranthene Concentration 4.7 (205-99-2) 0 Mass Benzo (ghi) perylene Concentration 4.8 (191-24-2) 0 Mass Benzo (k) fluoranthene Concentration 4.9 (207-08-9) 0 Mass Bis (2-chloroethoxy) methane Concentration 4.10 (111 1) 0 Mass Bis (2-chloroethyl) ether Concentration 4.11 (1 11-44-4) 0 Mass Bis (2-chloroisopropyl) ether Concentration 4.12 (102-80-1) 0 Mass Bis (2-ethylhexyl) phthalate Concentration 4.13 (117-81-7) 0 Mass 4-bromophenyl phenyl ether Concentration 4.14 (101 3) 0 Mass Butyl benzyl phthalate Concentration 4.1 5 (85-68-7) 0 Mass 2-chloronaphthalene Concentration 4.16 (91-58-7) 0 Mass 4-chlorophenyl phenyl ether Concentration 4.17 (7005-72-3) 0 Mass Chrysene Concentration 4.18 (218-01 -9) 0 Mass Dibenzo (a,h) anthracene Concentration 4.19 (53-70-3) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 16

EPA Identification Number NPDES Permtt Number Facility Name Outfall Number Form Approved 03/05/19 TN2 640030035

, a11

*1 m;;z,,. ._,......_,~ I . ., ,.~:,:

TN0020168 TVA Watts Bar Nuclear Plant

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Presence or Absence 1~* 1-~* 1*~1~, 1a...-.. r, l *:::1 Iii

'I OSN 101 0MB No. 2040-0004 (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Maximum Maximum Long-(and CAS Number, if available) Required Believed (specify) Average Number Number Present Daily Monthly Term Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

{if available l Value 1,2-dichlorobenzene Concentration 4.20 (95-50-1) 0 Mass 1,3-dichlorobenzene Concentration 4.21 (541-73-1) 0 Mass 1,4-dichlorobenzene Concentration 4.22 (106-46-7) 0 Mass 3,3-dichlorobenzidine Concentration 4.23 (91 1) 0 Mass Diethyl phthalate Concentration 4.24 (84-66-2) IZI Mass Dimethyl phthalate Concentration 4.25 (131-11-3) IZI Mass Di-n-butyl phthalate Concentration 4.26 (84-74-2) IZI Mass 2,4-dinitrotoluene Concentration 4.27 (121 2) IZI Mass 2,6-dinitrotoluene Concentration 4.28 (606-20-2) 0 Mass Di-n-octyl phthalate Concentration 4.29 (117-84-0) 0 Mass 1,2-Diphenylhydrazine Concentration 4.30 (as azobenzene) (122-66-7) IZI Mass Fluoranthene Concentration 4.31 (206-44-0) 0 Mass Fluorene Concentration 4.32 (86-73-7) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 17

EPA Identification Number NP0ES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN0020168 0MB No. 2040-0004 TN2640030035 TVA Watts Bar Nuclear Plant OSN 101

' ;1 :11 : * * * * *

• 1-H1 l::::l.!1---(M..l,I\-, **=- ..... 1:1: ~l*1..._.._,,~11Ialelff* 1.,11_ ,. .,_ '11J -1'*1** a..'"""r,il *::, Iii ,,

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value Hexachlorobenzene Concentration 4.33 (118-74-1) IZl Mass Hexachlorobutadiene Concentration 4.34 (87-68-3) IZl Mass Hexachlorocyclopentadiene Concentration 4.35 (77-47-4) IZl Mass Hexachloroethane Concentration 4.36 (67-72-1) IZl Mass lndeno (1 ,2,3-cd) pyrene Concentration 4.37 (193-39-5) IZl Mass lsophorone Concentration 4.38 (78-59-1) IZl Mass Naphthalene Concentration 4.39 (91-20-3) IZl Mass Nitrobenzene Concentration 4.40 (98-95-3) IZl Mass N-nitrosodimethylamine Concentration 4.41 (62-75-9) IZl Mass N-nitrosodi-n-propylamine Concentration 4.42 (621-64-7) IZl Mass N-nitrosodiphenylamine Concentration 4.43 (86-30-6) IZl Mass Phenanthrene Concentration 4.44 (85-01-8) IZl Mass Pyrene Concentration 4.45 (129-00-0) IZl Mass EPA Form 3510-2C (Revised 3-19) Page 18

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN0020168 0MB No. 2040-0004 TN2640030035 TVA Watts Bar Nuclear Plant OSN 101

. = - ).t 1.. 1,11::1**1---******1 1,1,,. 1 1***-*~: 1 ~l *--*1,,11 1]~,{tf ,~1,-, I* . , ...;:,i j- 1-f!'*'H.."'IIMIHi::I ......,...... 1111' ,****

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value 1,2,4-trichlorobenzene Concentration 4.46 (120-82-1) 0 Mass Section 5. Organic Toxic Pollutants (GC/MS Fraction-Pesticides)

Aldrin Concentration 5.1 (309-00-2) 0 Mass a-BHC Concentration 5.2 (319-84-6) 0 Mass

~-BHC Concentration 5.3 (319-85-7) 0 Mass y-BHC Concentration 5.4 (58-89-9) 0 Mass i'i-BHC Concentration 5.5 (319-86-8) 0 Mass Chlordane Concentration 5.6 (57-74-9) 0 Mass 4,4'-DDT Concentration 5.7 (50-29-3) 0 Mass 4,4'-DDE Concentration 5.8 (72-55-9) 0 Mass 4,4'-DDD Concentration 5.9 (72-54-8) 0 Mass Dieldrin Concentration 5.10 (60-57-1) 0 Mass a-endosulfan Concentration 5.11 (115-29-7) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 19

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TN264OO3OO35 TNOO2O168 TVA Watts Bar Nuclear Plant OSN 101

. 1:::1111 :- ,1**{ .. 1,11:1***---**11,-, 1)3 ..... ,,.:.1:1: ~'l 1 -..-._,1 ,,11 l='~H' l~I *- * ** * -.:.l !l l.-*U1R-,,._t:!n o,l::I **1*..ii .. IHto**

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value

~-endosulfan Concentration 5.12 (115-29-7) 0 Mass Endosulfan sulfate Concentration 5.13 (1031-07-8) 0 Mass Endrin Concentration 5.14 (72-20-8) 0 Mass Endrin aldehyde Concentration 5.1 5 (7421 4) 0 Mass Heptachlor Concentration 5.16 (76-44-8) 0 Mass Heptachlor epoxide Concentration 5.17 (1024-57-3)

• 0 Mass PCB-1242 Concentration 5.18 (53469-21-9) 0 Mass PCB-1254 Concentration 5.1 9 (11097-69-1) 0 Mass PCB-1221 Concentration 5.20 (11104-28-2) 0 Mass PCB-1232 Concentration 5.21 (11141-16-5) 0 Mass PCB-1248 Concentration 5.22 (12672-29-6) 0 Mass PCB-1260 Concentration 5.23 (11096-82-5) 0 Mass PCB-1016 Concentration 5.24 (12674-11 -2) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 20

EPA Identification Number NPDES Perm~ Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant check one Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available) Value if available Concentration 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 Nor 0. See instructions and 40 CFR 122.21(e)(3).

EPA Form 3510-2C (Revised 3-19) Page 21

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EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 101

. 1::2~.llf(,i,, * * * '"'~~1111 .,., **,.,1,.,,, ...,*** llfJ:l~lll*"mmlf*l,1a; 1r*! 'IIH Presence or Absence (check one) Effluent Intake (Optional}

Pollutant Units Maximum Believed Believed Long-Term (specify} Maximum Daily Long-Term Present Monthly Average Daily Number of Number of Absent Discharge Average (required} 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.

Bromide Concentration mg/L <0.0670 1 <0.0670 1 1.

(24959-67-9)

IZ]

Mass Chlorine, total Concentration mg/L <0.05 <0.05 135 <0.05 4 2.

residual IZ]

Mass Concentration PCU 15.0 1 15.0 1

3. Color IZ]

Mass Concentration

4. Fecal coliform IZ]

Mass Fluoride Concentration mg/L 0.1110 1 0.0865 1 5.

(16984-48-8)

IZ]

Mass Concentration mg/L 0.569 1 0.404 1 6 Nitrate-nitrite IZ]

Mass Nitrogen, total Concentration ug/L 256.0 1 94.6 1 7.

organic (as N)

IZ]

Mass Concentration mg/L <1.59 4 <1.61 4

8. Oil and grease IZ]

Mass Phosphorus (as Concentration mg/L 0.0482 1 <0.0200 1 9.

P), total (7723-14-0}

IZ]

Mass Sulfate (as S04) Concentration mg/L 14.3 1 10.2 1

10. (14808-79-8) IZ]

Mass Concentration mg/L <0.0330 1 <0.0330 1

11. Sulfide (as S) IZ]

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 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 101

, ***--- .. ::::l:-Jl.-,1hi l(I ~ll~:::I~ -** ** *"l *'l*h* I!'.*

Presence or Absence

~lfl:::l~Ur*1~J*1*c r11 11*, * ., . ... rr.llill(:i~.llir.

m (check one) Effluent Intake (Optional)

Pollutant Units Believed Believed Maximum Long-Term (specify) Maximum Daily Long-Term Present Monthly Average Daily Number of Number of Absent Discharge Average (required) Discharge Discharge Analyses Analyses

/if available\ (if available)

Value Concentration mg/L 3.20

12. Sulfite (as SQ 3) 4 0.96 4 (14265-45-3) 0 Mass Concentration mg/L <0.0170 1 <0.0170 1

13. Surfactants 0 Mass Concentration ug/L 73.4

14. Aluminum , total 1 90.1 1 (7429-90-5) 0 Mass Barium, total Concentration ug/L 28.6 1 22.8 1

15. (7440-39-3) 0 Mass Boron, total Concentration ug/L 387 1 12.2 1

16. (7440-42-8) 0 Mass Cobalt, total Concentration ug/L <0.300 1 <0.300 1

17. (7 440-48-4) 0 Mass Iron, total Concentration ug/L 115 1 119 1

18. (7439-89-6) 0 Mass Magnesium , total Concentration ug/L 6880 1 5220 1

19. (7 439-95-4) 0 Mass Molybdenum, Concentration ug/L 0.407 1 0.246 1

20. total (7439-98-7) 0 Mass Manganese, total Concentration ug/L 28.4 1 21.7 1 21 . (7439-96-5) 0 Mass Tin, total Concentration ug/L <1.00 1 <1.00 1

22. (7 440-31 -5) 0 Mass Titanium, total Concentration ug/L <2 .00 1 2.22 1

23. (7440-32-6) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 24

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant check one Effluent Pollutant Units Maximum Believed Believed Long-Term (specify) Maximum Daily Long-Term Present Monthly Average Daily Number of Number of Absent Discharge Average (required) Discharge Discharge Analyses Analyses if available if available Value

24. Radioactivity Concentration pCi/L <2 .31 1 <2.90 1 Alpha, total IZl Mass Concentration pCi/L 4.71 1 3.48 1 Beta, total IZl Mass Concentration pCi/L 0.803 1 0.488 1 Radium, total IZl Mass Concentration pCi/L 0.0818 1 0.0584 1 Radium 226, total IZl 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 Nor 0 . See instructions and 40 CFR 122.21 (e)(3).

EPA Form 3510-2C (Revised 3-19) Page 25

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EPA ldenllficat1on Number NPDES Permit Number TN2640030035 TN0020168 '"""'~ ~

TVA Watts Bar Nuclear Plant OSN 101 OMB No.

24 o o-0oo4 I'"'******<<***""'"'"'"' _,.,,_,,,. .. -~~..,.,,,~,i-,.,*~ ,,,,.,,,a,-. !Ill '"" "

Presence or Absence (check one) * *

• Pollutant . . Reason Pollutant Believed Present in Discharge Available Qu_antitative Data Believed Believed (specify units)

Present Absent

1. Asbestos 0 Present in Cool ing Towers N/A

2. Acetaldehyde 0

3. Allyl alcohol 0

4. Allyl chloride 0

5. Amyl acetate 0

6. Aniline 0

7. Benzonitrile 0

8. Benzyl chloride 0

9. Butyl acetate 0

10. Butylamine 0

11. Captan 0

12. Carbary!

0

13. Carbofuran 0

14. Carbon disulfide 0

15. Chlorpyrifos 0

16. Coumaphos 0

17. Cresol 0

18. Crotonaldehyde 0

19. Cyclohexane 0

EPA Form 3510-2C (Revised 3-19) Page 27

I. . . .,. ". ,. . . ". . ,. . .

EPA Identification Number TN2640030035 Pollutant

~

NPDES Permit Number TN0020168 1;;o,.,,r*'*'IIW*1..."1 :l:L"1111L"111 <I Presence or Absence Believed (check one)

Believed F~iityName ~

TVA Watts Bar Nuclear Plant OSN 101 Reason Pollutant Believed Present in Discharge OMB No. 2040-0004 Available Quantitative Data (specify units)

Present Absent

20. 2,4-D (2,4-dichlorophenoxyacetic acid}

0 21 . Diazinon 0

22. Dicamba 0

23. Dichlobenil 0

24. Dichlone 0

25. 2,2-dichloropropionic acid 0

26. Dichlorvos 0

27. Diethyl amine 0

28. Dimethyl amine 0

29. Dintrobenzene 0

30. Diquat 0

31 . Disulfoton 0

32. Diuron 0

33. Epichlorohydrin 0

34. Ethion 0

35. Ethylene diamine 0 (as ethylenediamine tetracidic acid) water additive in train ing cente n/a

36. Ethylene dibromide 0

37. Formaldehyde 0

38. Furfural 0

EPA Form 3510-2C (Revised 3-19) Page 28

EPA Identification Number TN2640030035 Pollutant I

NPDES Penm1t Number TN0020168 TV

L,,""II 1*,1rrr.'""f::1-.. *r-* ~H Wll:I Presence or Absence Believed (check one)

Believed Reason Pollutant Believed Present in Discharge Available Quantitative Data (specify units)

Present Absent

39. Guthion 0

40. lsoprene 0

41 . lsopropanolamine 0

42. Kelthane 0

43. Kepone 0

44. Malathion 0

45. Mercaptodimethur 0

46. Methoxychlor 0

47. Methyl mercaptan 0

48. Methyl methacrylate 0

49. Methyl parathion 0

50. Mevinphos 0

51. Mexacarbate 0

52. Monoethyl amine 0

53. Monomethyl amine 0

54. Naled 0

55. Naphthenic acid 0

56. Nitrotoluene 0

57. Parathion 0

EPA Form 3510-2C (Revised 3-1 9) Page 29

EPA Identification Number NPDES Penni! Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN00 20168 TVA Watts Bar Nuclear Plant OSN 101 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

58. Phenolsulfonate 0

59. Phosgene 0

60. Propargite 0

61. Propylene oxide 0 Nalco biodetergent 73551 as cooling water additive n/a

62. Pyrethrins 0

63. Quinoline 0

64. Resorcinol 0

65. Strontium 0

66. Strychnine 0

67. Styrene 0

2,4,5-T (2,4,5-trichlorophenoxyacetic 68.

acid) 0

69. TOE (tetrachlorodiphenyl ethane) 0 2,4,5-TP [2-(2,4,5-trichlorophenoxy) 70.

propanoic acidl 0 71 . Trichlorofon 0

72. Triethanolamine 0

73. Triethylamine 0

74. Trimethylamine 0

75. Uranium 0

76. Vanadium 0

EPA Form 3510-2C (Revised 3-19) Page 30

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant Pollutant check one Available Quantitative Data Believed Believed Reason Pollutant Believed Present in Discharge (specify units)

Present Absent

77. Vinyl acetate 0

78. Xylene 0

79. Xylenol 0

80. Zirconium 0

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 Nor 0. See instructions and 40 CFR 122.21 (e)(3).

EPA Form 3510-2C (Revised 3-19) Page 31

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EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant Congeners Pollutant check one Results of Screening Procedure Used or Believed Believed Manufactured Present Absent 2,3,7,8-TCDD 0

EPA Form 3510-2C (Revised 3-19) Page 33

EPA Identification Number NPDES Permit Number FacililyNa~ ~

TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant IMP 103 OMB No. 2D40-0004

• 1 =- * - .. *1,,u~:::i,,1~(*1*'"1*;1~11 ...,*-lh,lu;;;;a lll]l,,,,_ : *-- -fl,H ~,-Ju 1**' 1111 Effluent Intake (Optional}

Waiver Pollutant Units Maximum Maximum Long-Term Requested (if applicable)

(specify) Daily Monthly Average Daily Number of Long-Term Number of 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.

Biochemical oxygen demand Concentration mg/L 5.65 1 1.

(BOD s) Mass Chemical oxygen demand Concentration mg/L 19.1 1 2.

(COD) Mass Concentration mg/L 3.36 1

3. Total organic carbon (TOC)

Mass Concentration mg/L 1.25 1

4. Total suspended solids (TSS)

Mass Concentration mg/L 6.05 1

5. Ammonia (as N)

Mass

6. Flow Rate MGD 0.972 0.347 778 Temperature (winter)

• c *c 13.8 10.7 4 7.

Temperature (summer)

• c *c 8.

pH (minimum)

Standard units s.u. 6.2 37 pH (maximum)

Standard units s.u. 8.8 37 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 Nor 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 Penmit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant 0MB No. 2040-0004 IMP 103

.  :*l****-ilil;;a * ...

, 11]=- l -,t* ~=* N*1----*,~IIHJ;:{Cf. ,,,,,_, lt.t*- 1

• • • ~** 1 * *'~1-,""lfi l aij:I 11,~u-Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term (and CAS Number, if available) Required Believed Believed Maximum Maximum Long-(specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value 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 Antimony, total Concentration ug/L <1.00 1 1.1 (7 440-36-0) 0 Mass Arsenic, total Concentration ug/L <2.00 1 1.2 (7 440-38-2) 0 Mass Beryllium, total Concentration ug/L <0.200 1 1.3 (7 440-41 -7) 0 Mass Cadmium, total Concentration ug/L <0.300 1 1.4 (7440-43-9) 0 Mass Chromium, total Concentration ug/L <3.00 1 1.5 (7 440-4 7-3) 0 Mass Copper, total Concentration ug/L 5.09 1 1.6 (7 440-50-8) 0 Mass Lead, total Concentration ug/L <0.500 1 1.7 (7 439-92-1) 0 Mass Mercury, total Concentration ng/L 1.35 1.02 4 1.8 (7439-97-6) 0 Mass Nickel, total Concentration ug/L <0.600 1 1.9 (7 440-02-0) 0 Mass Selenium, total Concentration ug/L <2.00 1 1.10 (7782-49-2) 0 Mass Silver, total Concentration ug/L <0.300 1 1.1 1 (7440-22-4) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 11

EPA Identification Number NPDES Penmit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant IMP 103

• 1:1~*11):4,-.... --. ',U 111:::11 1111"*1 !J!I: ~u11-.....*Hl***1~1M .,~11- 1a1*trlil"J*TIIIYf.UIL.""'r,11*.. - - *---.... Ill'*

Presence or Absence

/check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term (and CAS Number, if available) Believed Believed Maximum Maximum Long-Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) Discharge Analyses Analyses (if available)

(if available)

Value Thallium, total Concentration ug/L <0.600 1 1.12 (7440-28-0) IZl Mass Zinc, total Concentration ug/L 36.6 1 1.13 (7 440-66-6) IZl Mass Cyanide, total Concentration ug/L <1.67 <l.67 4 1.1 4 (57-12-5) IZl Mass Concentration ug/L 4.46 1.77 4 1.1 5 Phenols, total IZl Mass Section 2. Organic Toxic Pollutants (GC/MS Fraction-Volatile Compounds)

Acrolein

• Concentration ug/L <1.67 <1.67 4 2.1 (107-02-8) IZl Mass Acrylonitrile

• Concentration ug/L <1.67 <1.67 4 2.2 (107-13-1) IZl Mass Benzene

• Concentration ug/L <0.333 <0.333 4 2.3 (71-43-2) IZl Mass Bromoform

• Concentration ug/L <0.333 <0.333 4 2.4 (75-25-2) IZl Mass Carbon tetrachloride

• Concentration ug/L <0.333 <0.333 4 2.5 (56-23-5) IZl Mass Chlorobenzene* Concentration ug/L <0.333 <0.333 4 2.6 (108-90-7) IZl Mass Chlorodibromomethane

• Concentration ug/L <0.333 <0.333 4 2.7 (124-48-1) IZl Mass Chloroethane

• Concentration ug/L <0.333 <0.333 4 2.8 (75-00-3) IZl Mass

• Denotes four grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TV A does not believe the analysis method affected the results.

EPA Form 3510-2C (Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant 0MB No. 2040-0004 IMP 103

. 1:::11 =-~tHrM 11Jl:af'*1 '*1.1

""' l*llf*1* ~: 1: ,ua 1 --*i1~11 1 ~lt:t 1~1--, :a *.w, .. *T11 llf'ili,_I,.,... ~ ,.,... 11: .... _,.,,.

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term (and CAS Number, if available) Believed Believed Maximum Maximum Long-Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) (if available) Discharge Analyses Analyses (if available l Value 2-chloroethylvinyl ether

• Concentration ug/L <1.67 <1 .67 4 2.9 (110-75-8) lZl Mass

• Concentration ug/L 1.31 1.19 4 2.10 Chloroform (67-66-3) lZl Mass Dichlorobromomethane

• Concentration ug/L <0.333 <0.333 4 2.11 (75-27-4) lZl Mass 1,1-dichloroethane

• Concentration ug/L <0.333 <0.333 4 2.12 (75-34-3) lZl Mass 1,2-dichloroethane* Concentration ug/L <0.333 <0.333 4 2.13 (107-06-2) lZl Mass 1, 1-dichloroethylene

• Concentration ug/L <0.333 <0.333 4 2.14 (75-35-4) lZl Mass 1,2-dichloropropane

• Concentration ug/L <0.333 <0.333 4 2.15 (78-87-5) lZl Mass 1,3-dichloropropylene

• Concentration ug/L <0.333 <0.333 4 2.16 (542-75-6) lZl Mass Ethylbenzene

• Concentration ug/L <0.333 <0.333 4 2.17 (100-41-4) lZl Mass Methyl bromide

• Concentration ug/L <0.337 <0.337 4 2.18 (74-83-9) lZl Mass Methyl chloride

• Concentration ug/L <0.333 <0.333 4 2.19 (74-87-3) lZl Mass Methylene chloride

• Concentration ug/L <1.67 <1.67 4 2.20 (75-09-2) lZl Mass 1,1,2,2- tetrachloroethane

• Concentration ug/L <0.333 <0.333 4 2.21 (79-34-5) lZl Mass EPA Form 3510-2C (Revised 3-19) Page 13

• Denotes four grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TVA does not believe the analysis method affected the results.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Farm Approved 03/05/19 0MB No. 2040-0004 "lH*

TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant IMP 103

• '1  :;Jl:*11***1 11_.,_._,.._....__,,_._,~ *******1*,..~1;1,,, *--*1,,r , u.,, -:i:111111r,,,,, -.,u*II**~ Ii 11111 Presence or Absence

{check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) (if available) Discharge Analyses Analyses

{if available)

Value Tetrachloroethylene

• Concentration ug/L <0.333 <0.333 4 2.22 (127-18-4) 0 Mass Toluene

• Concentration ug/L <0.333 <0.333 4 2.23 (108-88-3) 0 Mass 1,2-trans-dichloroethylene

• Concentration ug/L <0.333 <0.333 4 2.24 (156-60-5) 0 Mass 1,1, 1-trichloroethane

• Concentration ug/L <0.333 <0.333 4 2.25 (71-55-6) 0 Mass 1,1,2-trichloroethane

• Concentration ug/L <0.333 <0.333 4 2.26 (79-00-5) 0 Mass Trichloroethylene* Concentration ug/L <0.333 <0.333 4 2.27 (79-01-6) 0 Mass Vinyl chloride

• Concentration ug/L <0.333 <0.333 4 2.28 (75-01-4) 0 Mass Section 3. Organic Toxic Pollutants (GC/MS Fraction-Acid Compounds) 2-chlorophenol Concentration ug/L <2.89 1 3.1 (95-57-8) 0 Mass 2,4-dichlorophenol Concentration ug/L <2.89 1 3.2 (120-83-2) 0 Mass 2,4-dimethylphenol Concentration ug/L <2.89 1 3.3 (105-67-9) 0 Mass 4,6-dinitro-o-cresol Concentration ug/L <2 .89 1 3.4 (534-52-1) 0 Mass 2,4-dinitrophenol Concentration ug/L <4.82 1 3.5 (51-28-5) 0 Mass

• Denotes fo ur grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TVA does not believe the analysis method affected the res ults.

Page 14

EPA Identification Number NPDES Permtt Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TN2640030035

"  ;;a :*11u1 . . 1*1l:::llr~~*1 ,, t1;;a TN0020168 n***1*".l:t l~I ,,..._.._,1,,1***1~4C'J' l~I Presence or Absence TVA Watts Bar Nuclear Plant r111u1111:111 n,r,1 ,,,L...., ;i, ** ~. IMP 103 Ill'*

(check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value 2-nitrophenol Concentration ug/L <2.89 1 3.6 (88-75-5) IZI Mass 4-nitrophenol Concentration ug/L <2.89 1 3.7 (100-02-7) IZI Mass p-chloro-m-cresol Concentration ug/L <2.89 1 3.8 (59-50-7) IZI Mass Pentachlorophenol Concentration ug/L <2.89 1 3.9 (87-86-5) IZI Mass Phenol Concentration ug/L <2.89 1 3.10 (108-95-2) IZI Mass 2,4,6-trichlorophenol Concentration ug/L <2.89 1 3.11 (88-05-2) IZI Mass Section 4. Organic Toxic Pollutants (GC/MS Fraction-Base /Neutral Compounds)

Acenaphthene Concentration 4.1 (83-32-9) IZI Mass Acenaphthylene Concentration 4.2 (208-96-8) IZI Mass Anthracene Concentration 4.3 (120-12-7) IZI Mass Benzidine Concentration 4.4 (92-87-5) IZI Mass Benzo (a) anthracene Concentration 4.5 (56-55-3) IZI Mass Benzo (a) pyrene Concentration 4.6 (50-32-8) IZI Mass EPA Form 3510-2C (Revised 3-19) Page 15

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Ba r Nuclear Plant IMP 103

. 1::::1=***** -

1 ,m--,,-m;!,1., 1[:I **1*,**:-1:1: .,1e1-...~,~~IIIll~-4.n 1.,1,- 11

• I- r.g...i,., ......,uJU *::::i lli.,JilAl.li ..... ...

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term (and GAS Number, if available) Believed Believed Maximum Maximum Long-Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) (if available) Discharge Analyses Analyses

{if available)

Value 3,4-benzofiuoranthene Concentration 4.7 (205-99-2) [Z]

Mass Benzo (ghi) perylene Concentration 4.8 (191-24-2) [Z]

Mass Benzo (k) fiuoranthene Concentration 4.9 (207-08-9) [Z]

Mass Bis (2-chloroethoxy) methane Concentration 4.10 (111-91 -1) [Z]

Mass Bis (2-chloroethyl) ether Concentration 4.11 (111-44-4) [Z]

Mass Bis (2-chloroisopropyl} ether Concentration 4.12 (102-80-1) [Z]

Mass Bis (2-ethylhexyl) phthalate Concentration 4.13 (117-81-7) [Z]

Mass 4-bromophenyl phenyl ether Concentration 4.14 (101-55-3) [Z]

Mass Butyl benzyl phthalate Concentration 4.15 (85-68-7) [Z]

Mass 2-chloronaphthalene Concentration 4.16 (91-58-7) [Z]

Mass 4-chlorophenyl phenyl ether Concentration 4.17 (7005-72-3) [Z]

Mass Chrysene Concentration 4.18 (218-01-9) [Z]

Mass Dibenzo (a,h) anthracene Concentration 4.19 (53-70-3) [Z]

Mass EPA Form 3510-2C (Revised 3-19) Page 16

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2 640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant IMP 103

'  :- I * .... illl=-*!Bm? ......,. 'l:le M11,-....._,1,111*1J~4t'f'l,111-l1 * **- 'l* 111J~1,,1 'l - ::I Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) (if available) Discharge Analyses Analyses (if available)

Value 1,2-dichlorobenzene Concentration 4.20 (95-50-1) IZI Mass 1,3-dichlorobenzene Concentration 4.21 (541-73-1) IZI Mass 1,4-dichlorobenzene Concentration 4.22 (106-46-7) IZI Mass 3,3-dichlorobenzidine Concentration 4.23 (91-94-1) IZI Mass Diethyl phthalate Concentration 4.24 (84-66-2) IZI Mass Dimethyl phthalate Concentration 4.25 (131-11-3) IZI Mass Di-n-butyl phthalate Concentration 4.26 (84-74-2) IZI Mass 2,4-dinitrotoluene Concentration 4.27 (121-14-2) IZI Mass 2,6-dinitrotoluene Concentration 4.28 (606-20-2) IZI Mass Di-n-octyl phthalate Concentration 4.29 (117-84-0) IZI Mass 1,2-Diphenylhydrazine Concentration 4.30 (as azobenzene) (122-66-7) IZI Mass Fluoranthene Concentration 4.31 (206-44-0) IZI Mass Fluorene Concentration 4.32 (86-73-7) IZI Mass EPA Form 3510-2C (Revised 3-19) Page 17

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclea r Plant IMP 103

• ; 1 ;a :a1u.,1 .. 11n;;aJ!,...__ ....,.,~ 113 ....,,-*~:1 ,,111a."W *,~l1 11~ltf*

,.,,,_, It.I*- ***IU!,~-1-"'l~ll M:l ~r~;.. 11,11*****

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value Hexachlorobenzene Concentration 4.33 (118-74-1) 0 Mass Hexachlorobutadiene Concentration 4.34 (87-68-3) 0 Mass Hexachlorocyclopentadiene Concentration 4.35 (77-47-4) 0 Mass Hexachloroethane Concentration 4.36 (67-72-1) 0 Mass lndeno (1 ,2,3-cd) pyrene Concentration 4.37 (193-39-5) 0 Mass lsophorone Concentration 4.38 (78-59-1) 0 Mass Naphthalene Concentration 4.39 (91-20-3) 0 Mass Nitrobenzene Concentration 4.40 (98-95-3) 0 Mass N-nitrosodimethylamine Concentration 4.41 (62-75-9) 0 Mass N-nitrosodi-n-propylamine Concentration 4.42 (621-64-7) 0 Mass N-nitrosodiphenylamine Concentration 4.43 (86-30-6) 0 Mass Phenanthrene Concentration 4.44 (85-01 -8) 0 Mass Pyrene Concentration 4.45 (129-00-0) 0 Mass EPA Form 351 0-2C (Revised 3-19) Page 18

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant 0MB No. 2040-0004 IMP 103

. =--***

1:1 U . . l,,1--*

.,., **=- ***"*:.1 : 1: ,, 1 *-- *1,,11*11;n, , 1,11,_, 11.,,-:.111 *** *1~* ...-- **!1 *::1 mi Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required} (if available) Discharge Analyses Analyses (if available)

Value 1,2,4-trichlorobenzene Concentration 4.46 (120-82-1) IZI Mass Section 5. Organic Toxic Pollutants (GC/MS Fraction-Pesticides)

Aldrin Concentration 5.1 (309-00-2) IZI Mass a-BHC Concentration 5.2 (319-84-6) IZI Mass

~-BHC Concentration 5.3 (319-85-7) IZI Mass y-BHC Concentration 5.4 (58-89-9) IZI Mass i5-BHC Concentration 5.5 (319-86-8) IZI Mass Chlordane Concentration 5.6 (57-74-9) IZI Mass 4,4'-DDT Concentration 5.7 (50-29-3) IZI Mass 4,4'-DDE Concentration 5.8 (72-55-9) IZI Mass 4,4'-DDD Concentration 5.9 (72-54-8) IZI Mass Dieldrin Concentration 5.10 (60-57-1) IZI Mass a-endosulfan Concentration 5.11 (115-29-7) IZI Mass EPA Form 3510-2C (Revised 3-19) Page 19

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN 0020168 TVA Watts Bar Nuclear Plant 0MB No. 2040-0004

. **u*1*1I=-*' ..,~ **=-

,. (IH'*l*'.!: le ,,r 1..._.._,1 ,, 1 1 1~{Cf l~ll. . l . ,_, , _ 'l ****~r!,~1 ..,u111 11~ lli.-...-........ 11 IMP 103 Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term (and CAS Number, if available) Required Believed Believed Maximum Maximum Long-(specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) Discharge Analyses Analyses (if available)

(if available)

Value

~-endosulfan Concentration 5.12 (115-29-7) IZ]

Mass Endosulfan sulfate Concentration 5.13 (1031-07-8) IZ]

Mass Endrin Concentration 5.14 (72-20-8) IZ]

Mass Endrin aldehyde Concentration 5.15 (7421-93-4) IZ]

Mass Heptachlor Concentration 5.16 (76-44-8) IZ]

Mass Heptachlor epoxide Concentration 5.17 (1024-57-3)

IZ]

Mass PCB-1242 Concentration 5.18 (53469-21-9)

IZ]

Mass PCB-1254 Concentration 5.19 (11097-69-1)

IZ]

Mass PCB-1221 Concentration 5.20 (11104-28-2)

IZ]

Mass PCB-1232 Concentration 5.21 (11141 5) IZ]

Mass PCB-1248 Concentration 5.22 (12672-29-6)

IZ]

Mass PCB-1260 Concentration 5.23 (11096-82-5)

IZ]

Mass PCB-1016 Concentration 5.24 (12674-11 -2)

IZ]

Mass EPA Form 3510-2C (Revised 3-19) Page 20

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TVA Watts Bar Nuclear Plant 0MB No. 2040-0004 check one Effluent Pollutant/Parameter Testing Units Long-Term (and CAS Number, if available) Required Believed Believed Maximum Maximum Long-(specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) (if available) Discharge Analyses Analyses if available Value Toxaphene Concentration 5.25 (8001-35-2)

IZ1 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 Nor 0. See instructions and 40 CFR 122.21 (e)(3).

EPA Form 3510-2C (Revised 3-19) Page 21

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EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN0020168 0MB No. 2040-0004 TN2640030035 TVA Watts Bar Nuclear Plant IMP 103

. 1*:::1~-1:*~1h.'*91.* 'l'J:::l~ -I .,,,1-*l\'I l \'IIJl' III* ~llJ :::1~1 IIIJ*1f *1 ,. 111 -*1,, * ., *I Presence or Absence (check one) Effluent Intake (Optional)

Pollutant Units Maximum Long-Term Believed Believed (specify) Maximum Daily Long-Term Monthly Average Daily Number of Number of Present Absent Discharge Average Discharge Discharge Analyses Analyses (requireq)

(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.

Bromide Concentration ug/L 0.141 1

1. (24959-67-9)

IZ]

Mass Chlorine, total Concentration ug/L <0.05 <0.05 4 2.

residual IZ]

Mass Concentration PCU 15.0 1

3. Color IZ]

Mass Concentration

4. Fecal coliform IZ]

Mass Fluoride Concentration mg/L 0.108 1

5. (16984-48-8) IZ]

Mass Concentration mg/L 1.37 1 6 Nitrate-nitrite IZ]

Mass Nitrogen, total Concentration ug/L 1360 1 7.

organic (as N)

IZ]

Mass Concentration mg/L <13.5 <4.6 31

8. Oil and grease IZ]

Mass Phosphorus (as Concentration mg/L 0.362 1 9.

P), total (7723-1 4-0)

IZ]

Mass Sulfate (as S04) Concentration mg/L 19.3 1

10. (14808-79-8) IZ]

Mass Concentration mg/L <0.0330 1 11 . Sulfide (as S) IZ]

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 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant IMP 103 l~,11**,I~*** ,,m:::1,,111 1,, ,.,,~1 -,,,., .,.ow;1 ,,,..,j,.. ,,.111ra1.,l'i, ~

r ll **' *n "' .,.. ,. .

Presence or Absence (check one) Effluent Intake (Optional)

Pollutant Units Maximum Long-Term Believed Believed (specify) Maximum Daily Long-Term Monthly Average Daily Number of Number of Present Absent Discharge Average Discharge Discharge Analyses Analyses (required)

/if availablel (if available)

Value Concentration mg/L 0.64

12. Sulfite (as SQ3) 0.64 4 (14265-45-3)

IZ]

Mass Concentration mg/L <0.170 1

13. Surfactants IZ]

Mass Concentration ug/L 68.2

14. Aluminum , total 1 (7429-90-5)

IZ]

Mass Concentration ug/ L 34.l

15. Barium, total 1

(7440-39-3)

IZ]

Mass Concentration ug/L 27.6

16. Boron, total 1

(7440-42-8)

IZ]

Mass Cobalt, total Concentration ug/L <0.300 1

17. (7 440-48-4)

IZ]

Mass Iron, total Concentration ug/L 62 .0 1

18. (7439-89-6) IZ]

Mass Concentration ug/L 9370

19. Magnesium, total 1

(7 439-95-4)

IZ]

Mass Molybdenum, Concentration ug/L 2.68 1

20. total (7439-98-7}

IZ]

Mass Concentration ug/L 21.9

21. (7Manganese, total 1 439-96-5)

IZ]

Mass Concentration ug/L <1.00 1

22. Tin, total (7440-31-5)

IZ]

Mass Titanium, total Concentration ug/L <2.00 1

23. (7440-32-6) IZ]

Mass EPA Form 3510-2C (Revised 3-19) Page 24

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TVA Watts Bar Nuclear Plant 0MB No. 2040-0004 check one Effluent (Optional)

Pollutant Units Maximum Believed Believed Long-Term (specify) Maximum Daily Long-Term Present Absent Monthly Average Daily Number of Number of Discharge Average (required) Discharge Discharge Analyses Analyses if available if available Value

24. Radioactivity Concentration pCi/L <2.35 1 Alpha, total 0 Mass Concentration pCi/L 2.47 1 Beta, total 0 Mass Concentration pCi/L 0.477 1 Radium, total 0 Mass Concentration pCi/L 0.110 1 Radium 226, total 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 Nor 0 . See instructions and 40 CFR 122.21 (e)(3).

EPA Form 3510-2C (Revised 3-19) Page 25

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EPA ldent1ficat1on Number Fae,l~Na~ ~

NPDES Permit Number TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant IMP 103 OMB No. 2o4o-0oo4

. 1~.11111* ,..,1111:,,..,_.,1~,IIIII -..'Ill,.._,.,,, ,,, 1.1-,,,*1~11W*l..."l :.:>....._II._..._ *!l llli::1~6.,1'J 1*11******11 Presence or Absence Pollutant (check one) Available Quantitative Data Believed Believed Reason Pollutant Believed Present in Discharge (specify units)

Present Absent

1. Asbestos 0

2. Acetaldehyde 0

3. Allyl alcohol 0

4. Allyl chloride 0

5. Amyl acetate 0

6. Aniline 0

7. Benzonitrile 0

8. Benzyl chloride 0

9. Butyl acetate 0

10. Butylamine 0

11 . Caplan 0

12. Carbary!

0

13. Carbofuran 0

14. Carbon disulfide 0

15. Chlorpyrifos 0

16. Coumaphos 0

17. Cresol 0

18. Crotonaldehyde 0

19. Cyclohexane 0

EPA Form 3510-2C (Revised 3-19) Page 27

,,,.*. EPA Identification Number TN2640030035 NPDES Permit Number Pollutant TN0020168

~,1,u1w*t...~~1...._..... ,.,._..,. ,,

Presence or Absence (check one)

Facn~,,~ ~

TVA Watts Bar Nuclear Plant 1 11:::::1:ia.-,,. ,..,. i* 1 *.11 IMP 103 Reason Pollutant Believed Present in Discharge OMB No. 2D40-0004 Available Quantitative Data Believed Believed (specify units)

Present Absent

20. 2,4-D (2,4-dichlorophenoxyacetic acid) 0

21. Diazinon 0

22. Dicamba 0

23. Dichlobenil 0

24. Dichlone 0

25. 2,2-dichloropropionic acid 0

26. Dichlorvos 0

27. Diethyl amine 0

28. Dimethyl amine 0

29. Dintrobenzene 0

30. Diquat 0

31. Disulfoton 0

32. Diuron 0

33. Epichlorohydrin 0

34. Ethion 0

35. Ethylene diamine 0

36. Ethylene dibromide 0

37. Formaldehyde 0

38. Furfural

[Z]

EPA Form 3510-2C (Revised 3-19) Page 28

EPA Identification Number NPDES Permit Number 1*~*-** . ,

TN2640030035 1:,, ..... ~~01111 Pollutant

wr...,11 :t,..~**

TN0020168

• 1i~1***1-:1 !~""'I.._...._ .........,. ~H*.-il:l:aa,Jlf'.J Presence or Absence (check one) i TVA Watts Bar Nuclear Plant IMP 103 Reason Pollutant Believed Present in Discharge OMB No. 2o40-0004 Available Quantitative Data Believed Believed (specify units)

Present Absent

39. Guthion 0

40. lsoprene 0

41 . lsopropanolamine 0

42. Kelthane 0

43. Kepone 0

44. Malathion 0

45. Mercaptodimethur 0

46. Methoxychlor 0

47. Methyl mercaptan 0

48. Methyl methacrylate 0

49. Methyl parathion 0

50. Mevinphos 0

51. Mexacarbate 0

52. Monoethyl amine 0

53. Monomethyl amine 0

54. Naled 0

55. Naphthenic acid 0

56. Nitrotoluene 0

57. Parathion 0

EPA Form 3510-2C (Revised 3-19) Page 29

~ ~~N~ N ~~ ~

TN2640030035 TN0020168 TVA 04 l

l:l"**.,"1~.llf*ll~ ;r*Y.1*1'JII*1 1 ...._.... 1:J.."tf*l*" ,:::>......_,, ,,11w,1....~ :i~~**~~ ,11 -i::1 Presence or Absence Pollutant . (check onel . Reason Pollutant Believed Present in Discharge Available Quantitative Data Believed Believed (specify units)

Present Absent

58. Phenolsulfonate 0

59. Phosgene 0

60. Propargite 0

61 . Propylene oxide 0

62. Pyrethrins 0

63. Quinoline 0

64. Resorcinol 0

65. Strontium 0

66. Strychnine 0

67. Styrene 0

2,4,5-T (2,4,5-trichlorophenoxyacetic 68.

acid) 0

69. TOE (tetrachlorodiphenyl ethane) 0 2,4,5-TP [2-(2,4,5-trichlorophenoxy) 70.

orooanoic acidl 0 71 . Trichlorofon 0

72. Triethanolamine 0

73. Triethylamine 0

74. Trimethylamine 0

75. Uranium 0

76. Vanadium 0

EPA Form 3510-2C (Revised 3-19) Page 30

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TVA Watts Bar Nuclear Plant 0MB No. 2040-0004 Pollutant check one Available Quantitative Data Believed Believed Reason Pollutant Believed Present in Discharge (specify units)

Present Absent

77. Vinyl acetate IZ]

78. Xylene IZ]

79. Xylenol IZ]

80. Zirconium IZ]

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 Nor 0. See instructions and 40 CFR 122.21 (e)(3).

EPA Form 3510-2C (Revised 3-19) Page 31

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EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant Congeners Pollutant check one Results of Screening Procedure Used or Believed Believed Manufactured Present Absent 2,3,7,8-TCDD 0

EPA Form 3510-2C (Revised 3-19) Page 33

EPA Identification Number NPDES Permit Number FacilltyNa~ ~

TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant OSN 113 OMB No. 2040-D004

. *--:*1., m~ ~**r11,u,1**1,,111 11 ,, ao:l l ~lT~ :::I ~ 1111 ra1.u*,1**1* l.lf,U IL"'I, .,m: ,* .,.,_., 111 Effluent Intake (Ootionall Waiver Units Maximum Maximum Long-Term Pollutant Requested (specify) Daily Monthly Average Daily Number of Long-Term Number of (if applicable)

Discharge Discharge Discharge Analyses Average Value Analyses

/reauired) /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.

Biochemical oxygen demand Concentration mg/L <l.00 1 <1.00 1 1.

(BO0 5) Mass Chemical oxygen demand Concentration mg/L 11.6 1 21.6 1 2.

(COD) Mass Concentration mg/L 2.02 1 1.84 1

3. Total organic carbon (TOC)

Mass Concentration mg/L 21.0 6.1 61 3.80 1

4. Total suspended solids (TSS)

Mass Concentration mg/L 0 .0634 1 0 .0364 1

5. Ammonia (as N)

Mass

6. Flow Rate MGD 201.89 61 .99 919.00 Temperature (winter) oc oc 31.0 18.0 461.0 8.4 4 7.

Temperature (summer) oc oc 41.1 28.2 458.0 N/A N/A 8.

pH (minimum)

Standard units s.u. 6.1 36 7.76 4 pH (maximum)

Standard units s.u. 8.9 36 8.29 4 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 Nor 0. See instructions and 40 CFR 122.21 (e)(3) .

EPA Form 3510-2C (Revised 3-19) Page 9

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EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0 MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 113

. ., ........ .ai.,!.,~ 1***1*!.l~I: \'I * --._,,\,I I.I) :"4rr* ,,,,._ 1 **1-  : . ,,,--~

• Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value 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 Antimony, total Concentration ug/L <1.00 1 <1.00 1 1.1 (7 440-36-0) IZI Mass Arsenic, total Concentration ug/L <2.00 1 <2.00 1 1.2 (7 440-38-2) IZI Mass Beryllium, total Concentration ug/L <0.200 1 <0.200 1 1.3 (7440-41-7) IZI Mass Cadmium, total Concentration ug/L <0.300 1 <0.300 1 1.4 (7 440-43-9) IZI Mass Chromium, total Concentration ug/L <3.00 1 <3 .00 1 1.5 (7 440-4 7-3) IZI Mass Copper, total Concentration ug/L 2.54 1 0.971 1 1.6 (7 440-50-8) 0 Mass Lead, total Concentration ug/L <0.500 1 <0.500 1 1.7 (7 439-92-1) 0 Mass Mercury, total Concentration ng/L 2.16 1.81 4 <1.56 4 1.8 (7 439-97-6) IZI Mass Nickel, total Concentration ug/L <0.600 1 <0.600 1 1.9 (7440-02-0) IZI Mass Selenium, total Concentration ug/L <2 .00 1 <2.00 1 1.10 (7782-49-2) IZI Mass Silver, total Concentration ug/L <0.300 1 <0.300 1 1.11 (7440-22-4) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 11

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN264OO3OO35 TNOO2O168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 113

• ~1*=-~*,..*"""""l'l l _ . * ~ 1 ~ ,,.., 11***1  ::.1:1 ~11 " - ~*1,,1 1 11.u,.* ,., .... 1 1,u_!I l .. ~1~'1L.,.FJ l -:::::1 Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value Thallium, total Concentration ug/L <0.600 1 <0.600 1 1.12 (7 440-28-0) 0 Mass Zinc, total Concentration ug/L 19.7 1 3.54 1 1.13 (7 440-66-6) 0 Mass Cyanide, total Concentration ug/L <1.67 <1.67 4 <1.67 1 1.14 (57-12-5) 0 Mass Concentration ug/L 1.70 <1.67 4 <2.04 4 1.15 Phenols, total 0 Mass Section 2. Organic Toxic Pollutants (GC/MS Fraction-Volatile Compounds)

Acrolein

• Concentration ug/L <1.67 <1. 67 4 <1.67 4 2.1 (107-02-8) 0 Mass Acrylonitrile* Concentration ug/L <1.67 <1.67 4 <1.67 4 2.2 (107-13-1) 0 Mass Benzene

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2.3 (71-43-2) 0 Mass Bromoform

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2.4 (75-25-2) 0 Mass Carbon tetrachloride* Concentration ug/L <0.333 <0.333 4 <0.333 4 2.5 (56-23-5) 0 Mass Chlorobenzene Concentration ug/L <0.333 <0.333 4 <0.333 4 2.6 (108-90-7) 0 Mass Chlorodibromomethane Concentration ug/L <0.333 <0 .333 4 <0.333 4 2.7 (124-48-1) 0 Mass Chloroethane* Concentration ug/L <0.333 <0.333 4 <0.333 4 2.8 (75-00-3) 0 Mass

• Denotes four grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TVA does not believe the analysis method affected the results.

EPA Form 3510-2C (Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 113

• 1::a:*1.. 1 1 -111 1 * ....,it~,~ ,lJ l1t1*,11*:J:1 , r,1--.-.,,~11I11~,n*1,,,,_ ,... r.. ".I********'*'*.._.._,,,

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value 2-chloroethylvinyl ether* Concentration ug/L <1.67 <1.67 4 <1.67 4 2.9 (110-75-8) 121 Mass Concentration 2.10 Chloroform (67-66-3)

• ug/L <0.333 <0.333 4 <0.333 4 121 Mass Dichlorobromomethane

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2 11

• (75-27-4) 121 Mass 1,1-dichloroethane

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2 2

• 1 (75-34-3) 121 Mass 1,2-dichloroethane* Concentration ug/L <0.333 <0.333 4 <0.333 4 2 3

• 1 (107-06-2) 121 Mass 1, 1-dichloroethylene

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2 4

• 1 (75-35-4) 121 Mass 1,2-dichloropropane

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2 5

• 1 (78-87-5) 121 Mass 1,3-dichloropropylene

• Concentration ug/L <0 .333 <0.333 4 <0.333 4 2 16

• (542-75-6) 121 Mass Ethylbenzene* Concentration ug/L <0.333 <0.333 4 <0.333 4 2 17

• (100-41-4) 121 Mass Methyl bromide

• Concentration ug/L <0.337 <0.337 4 <0.337 4 2 8

• 1 (7 4-83-9) 121 Mass Methyl chloride

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2 9

• 1 (7 4-87-3) 121 Mass Methylene chloride

• Concentration ug/L <l.67 <1.67 4 <1.67 4 2 20

• (75-09-2) 121 Mass 1, 1,2,2- tetrachloroethane* Concentration ug/L <0.333 <0.333 4 <0.333 4 2 21

• (79-34-5) 121 Mass EPA Form 3510-2C (Revised 3-19) Page 13

• Denotes four grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TV A does not believe the analysis method affected the results.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 113

. 1:11 : * * * *-1l l . . l'Jl;;;a .. ,1 ...~ ...-.,,,, ,-[I ;,1 ..,,.:.1: 1: ~l**---*, 1 .,, * * *

• 11,**,u 1 1 - r ****a.l~ll llllf,1.., * ..__.._r'.ir1 ai1::::1 Presence or Absence

/check onel Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value Tetrachloroethylene

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2.22 (127-18-4) IZl Mass Toluene

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2.23 (108-88-3) IZl Mass 1,2-trans-dichloroethylene

• Concentration ug/L <0.333 <0.333 4 <0 .333 4 2.24 (156-60-5) IZl Mass 1, 1,1-trichloroethane

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2.25 (71 6) IZl Mass 1, 1,2-trichloroethane

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2.26 (79-00-5) IZl Mass Trichloroethylene* Concentration ug/L <0.333 <0.333 4 <0.333 4 2.27 (79-01-6) 0 Mass Vinyl chloride

• Concentration ug/L <0.333 <0.333 4 <0.333 4 2.28 (75-01-4) IZl Mass Section 3. Organic Toxic Pollutants (GC/MS Fraction-Acid Compounds) 2-chlorophenol Concentration ug/L <2 .89 1 <2 .81 1 3.1 (95-57-8) IZl Mass 2,4-dichlorophenol Concentration ug/L <2.89 1 <2 .81 1 3.2 (120-83-2) IZl Mass 2,4-dimethylphenol Concentration ug/L <2.89 1 <2.81 1 3.3 (105-67-9) IZl Mass 4,6-d in itro-o-cresol Concentration ug/L <2.89 1 <2.81 1 3.4 (534-52-1) IZl Mass 2,4-dinitrophenol Concentration ug/L <4.81 1 <4.68 1 3.5 (51-28-5) IZl Mass

• Denotes four grab samples were analyzed individually instead of compositing in the laboratory prior to analyses, all results were non-detect and TV A does not believe the analysis method affected the results.

EPA Form 3510-2C (Revised 3-19) Page 14

EPA Identification Number NPDES Perm~ Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 113

. . m,,., 11(;1 ; ...,,.:1:1: ,,,., ....--.,~,1**1;u-r* 1~11im:1'111 n*,1., .......... 1t 11: ~

Presence or Absence (check onel Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

(if available)

Value 2-nitrophenol Concentration ug/L <2.89 1 <2.81 1 3.6 (88-75-5)

IZ]

Mass 4-nitrophenol Concentration ug/L <2.89 1 <2.81 1 3.7 (100-02-7)

IZ]

Mass p-chloro-m-cresol Concentration ug/L <2 .89 1 <2.81 1 3.8 (59-50-7)

IZ]

Mass Pentachlorophenol Concentration ug/L <2.89 1 <2 .81 1 3.9 (87-86-5)

IZ]

Mass Phenol Concentration ug/L <2.89 1 <2.81 1 3.10 (108-95-2)

IZ]

Mass 2,4,6-trichlorophenol Concentration ug/L <2.89 1 <2 .81 1 3.11 (88-05-2)

IZ]

Mass Section 4. Organic Toxic Pollutants (GC/MS Fraction-Base /Neutral Compounds)

Acenaphthene Concentration 4.1 (83-32-9) IZ]

Mass Acenaphthylene Concentration 4.2 (208-96-8) IZ]

Mass Anthracene Concentration 4.3 (120-12-7) IZ]

Mass Benzidine Concentration 4.4 (92-87-5) IZ]

Mass Benzo (a) anthracene Concentration 4.5 (56-55-3) IZ]

Mass Benzo (a) pyrene Concentration 4.6 (50-32-8) IZ]

Mass EPA Form 3510-2C (Revised 3-19) Page 15

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant OSN 113

. 1::11 . . . . . . ,.. 1111 ;;111,,, ......_..,.,,u g 111 .... *:.1:" .,,,1..._.._,1,111 l~ltf*B ... ,... :.1'111 *-**1~1i11L..,.h.~:l Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available) Value (if available) 3,4-benzofluoranthene Concentration 4.7 (205-99-2) IZl Mass Benzo (ghi) perylene Concentration 4.8 (191-24-2) IZl Mass Benzo (k) fluoranthene Concentration 4.9 (207-08-9) IZl Mass Bis (2-chloroethoxy) methane Concentration 4.10 (111 1) IZl Mass Bis (2-chloroethyl) ether Concentration 4.11 (111-44-4) IZl Mass Bis (2-chloroisopropyl) ether Concentration 4.12 (102-80-1) IZl Mass Bis (2-ethylhexyl) phthalate Concentration 4.13 (117-81-7) IZl Mass 4-bromophenyl phenyl ether Concentration 4.14 (101-55-3) IZl Mass Butyl benzyl phthalate Concentration 4.15 (85-68-7) IZl Mass 2-chloronaphthalene Concentration 4.16 (91-58-7) IZl Mass 4-chlorophenyl phenyl ether Concentration 4.17 (7005-72-3) IZl Mass Chrysene Concentration 4.18 (218-01-9) IZl Mass Dibenzo (a,h} anthracene Concentration 4.19 (53-70-3) IZl Mass EPA Form 3510-2C (Revised 3-19) Page 16

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN0020168 0MB No. 2040-0004 TN2640030035 TVA Watts Bar Nuclear Plant OSN 113

. 1:1=-** **,u 11e11 ,... ,.,,.:.1:1: ~111-...---*~~IH*1~.{ff_* ,.,,,_

Presence or Absence

....-~. 1***1\,, * .._~,,u *::::1 (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Present Daily Monthly Term Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available)

{if available)

Value 1,2-dichlorobenzene Concentration 4.20 (95-50-1) IZl Mass 1,3-dichlorobenzene Concentration 4.21 (541-73-1) IZl Mass 1,4-dichlorobenzene Concentration 4.22 (106-46-7) IZl Mass 3,3-dichlorobenzidine Concentration 4.23 (91-94-1) IZl Mass Diethyl phthalate Concentration 4.24 (84-66-2) 0 Mass Dimethyl phthalate Concentration 4.25 (131-11-3) 0 Mass Di-n-butyl phthalate Concentration 4.26 (84-74-2) 0 Mass 2,4-dinitrotoluene Concentration 4.27 (121-14-2) 0 Mass 2,6-dinitrotoluene Concentration 4.28 (606-20-2) IZl Mass Di-n-octyl phthalate Concentration 4.29 (117-84-0) IZl Mass 1,2-Diphenylhydrazine Concentration 4.30 (as azobenzene) (122-66-7) 0 Mass Fluoranthene Concentration 4.31 (206-44-0) IZl Mass Fluorene Concentration 4.32 (86-73-7) IZl Mass EPA Form 3510-2C (Revised 3-19) Page 17

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant OSN 113

. ,. .,_,,11,,_i,_._, ...............,~ :,JJ l)lf***::.1:1: *" 1)-....._,~~II** 'lH* ..... -, 111

• • u*:111 ** -- * *iu -i:1

• Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Maximum Maximum Long-(and CAS Number, if available) Required Believed Believed (specify) Average Number Number Daily Monthly Term Present Absent Daily of of Discharge Discharge Average Discharge Analyses Analyses (required) (if available) Value (if available)

Hexachlorobenzene Concentration 4.33 (118-74-1) IZ]

Mass Hexachlorobutadiene Concentration 4.34 (87-68-3) IZ]

Mass Hexachlorocyclopentadiene Concentration 4.35 (77-47-4) IZ]

Mass Hexachloroethane Concentration 4.36 (67-72-1) IZ]

Mass lndeno (1,2,3-cd) pyrene Concentration 4.37 (193-39-5) IZ]

Mass lsophorone Concentration 4.38 (78-59-1) IZ]

Mass Naphthalene Concentration 4.39 (91-20-3) IZ]

Mass Nitrobenzene Concentration 4.40 (98-95-3) IZ]

Mass N-nitrosodimethylamine Concentration 4.41 (62-75-9) IZ]

Mass N-nitrosodi-n-propylamine Concentration 4.42 (621-64-7) IZ]

Mass N-nitrosodiphenylamine Concentration 4.43 (86-30-6) IZ]

Mass Phenanthrene Concentration IZ]

4.44 (85-01-8) Mass Pyrene Concentration 4.45 (129-00-0) IZ]

Mass EPA Form 3510-2C (Revised 3-1 9) Page 18

EPA Identification Number NPDES Permtt Number Facility Name Outfall Number Form Approved 03/05/19 TN264OO3OO35 TNOO2O168 TVA Watts Bar Nuclear Plant OSN 113 0MB No. 2040-0004

. . n:t,_ ,,, ,:::111,,, .......,.,,~ 11::a 111**1 ~=1: Nll_,_,,,,1 ,** 1~,H*i.*111l *01-!J l 1 *!wllL"'ll'Ml 11'1:I Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units

• Long-Term (and CAS Number, if available) Required Believed Believed (specify) Maximum Maximum Long-Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) (if available) Discharge Analyses Analyses (if available)

Value 1,2,4-trichlorobenzene Concentration 4.46 (120-82-1) 0 Mass Section 5. Organic Toxic Pollutants (GC/MS Fraction-Pesticides)

Aldrin Concentration 5.1 (309-00-2) 0 Mass a-BHC Concentration 5.2 (319-84-6) 0 Mass

~-BHC Concentration 5.3 (319-85-7) 0 Mass y-BHC Concentration 5.4 (58-89-9) 0 Mass o-BHC Concentration 5.5 (319-86-8) 0 Mass Chlordane Concentration 5.6 (57-74-9) 0 Mass 4,4'-DDT Concentration 5.7 (50-29-3) 0 Mass 4,4'-DDE Concentration 5.8 (72-55-9) 0 Mass 4,4'-DDD Concentration 5.9 (72-54-8) 0 Mass Dieldrin Concentration 5.1 0 (60-57-1) 0 Mass a-endosulfan Concentration 5.11 (115-29-7) 0 Mass EPA Form 3510-2C (Revised 3-1 9)

Page 19

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 113

, 1:1  ;;a : 1n:t1* 1*11 :111,,,..._..__.***., ,,,,. 1*H*1 ~=1: Nll'""-*HIHll~ltf 1.1 11- ***n,.. r* lill.,-,l-' &.......-1;(1* .. *

. .,.,__. *If** ***

Presence or Absence (check one) Effluent Intake (optional)

Pollutant/Parameter Testing Units Long-Term Believed Believed Maximum Maximum Long-(and CAS Number, if available) Required (specify) Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (if available) Discharge Analyses Analyses (required)

(if available)

Value

~-endosulfan Concentration 5.12 (115-29-7) 0 Mass Endosulfan sulfate Concentration 5.13 (1031-07-8) 0 Mass Endrin Concentration 5.14 (72-20-8) 0 Mass Endrin aldehyde Concentration 5.15 (7421-93-4) 0 Mass Heptachlor Concentration 5.16 (76-44-8) 0 Mass Heptachlor epoxide Concentration 5.17 (1024-57-3) 0 Mass PCB-1242 Concentration 5.18 (53469-21-9) 0 Mass PCB-1254 Concentration 5.19 (11097-69-1) 0 Mass PCB-1221 Concentration 5.20 (11104-28-2) 0 Mass PCB-1232 Concentration 5.21 (11141-16-5) 0 Mass PCB-1248 Concentration 5.22 (12672-29-6) 0 Mass PCB-1260 Concentration 5.23 (11096-82-5) 0 Mass PCB-101 6 Concentration 5.24 (12674-11-2) 0 Mass EPA Form 3510-2C (Revised 3-19) Page 20

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TVA Watts Bar Nuclear Pla nt 0MB No. 2040-0004 check one Effluent (optional)

Pollutant/Parameter Testing Units Long-Term (and CAS Number, if available) Required Believed Believed (specify)

Maximum Maximum Long-Average Number Number Present Absent Daily Monthly Term Daily of of Discharge Discharge Average (required) (if available) Discharge Analyses Analyses if available Value Concentration 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 Nor 0 . See instructions and 40 CFR 122.21 (e)(3).

EPA Form 3510-2C (Revised 3-19) Page 21

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EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TN2640030035 TN0020168 0MB No. 2040-0004 TVA Watts Bar Nuclear Plant OSN 113

. ., .., *** ~l'l::l~ -1 ,,~,-*1,111,'ll*E -*J*1f*_,_ [ll .. l1~, *

• r~*I 11111"M..lirrm Presence or Absence (check one) Effluent Intake (Optiona l)

Pollutant Units Believed Believed Maximum Long-Term (specify) Maximum Daily Long-Term Present Monthly Average Daily Number of Number of Absent Discharge Average Discharge Discharge Analyses Analyses (required)

(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.

Bromide Concentration mg/L <0.0670 1 <0. 0670 1

[Z]

1.

(24959-67-9) Mass Chlorine, total Concentration mg/L <0.05 <0.05 134 <0.05 4

[Z]

2.

residual Mass Concentration PCU 15.0 1 15.0 1

[Z]

3. Color Mass Concentration

4. Fecal coliform

[Z]

Mass Fluoride Concentration mg/L 0 .107 1 0.0861 1

[Z]

5. (16984-48-8)

Mass Concentration mg/L 0.572 1 0 .380 1

[Z]

6 Nitrate-nitrite Mass Nitrogen, total Concentration ug/L 116 1 168 1

[Z]

7.

organic (as N) Mass Concentration mg/L <11 .1 <5.4 32 <1.65 1

[Z]

8. Oil and grease Mass Phosphorus (as Concentration mg/L 0.0525 1 <0.0200 1

[Z]

9.

P), total (7723-14-0) Mass Concentration mg/L

10. Sulfate (as SO4) 14.0 1 10.0 1

[Z]

(14808-79-8) Mass Concentration mg/L <0.0330 1 <0 .0330 1 11 . Sulfide (as S) [Z] Mass EPA Form 3510-2C (Revised 3-19) Page 23

EPA Identification Number NPDES Permit Number Facility Nam, ~

TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant OSN 113 0MB No. 2040-0004

. .11 *.* , .,. . . . . . 1,,uJ-1.,-~r* ,,., *,uI .-*u1i.,** ,1rn;;i ,, ~11i.*r*, .11 **1.1* rr*!-

Presence or Absence

/check one\ Effluent Intake (Optional)

Pollutant Units Believed Believed Maximum Long-Term (specify) Maximum Daily Long-Term Present Absent Monthly Average Daily Number of Number of Discharge Average (required) Discharge Discharge Analyses Analyses

/if available\ (if available) Value Concentration

12. Sulfite (as SQ3) IZ] mg/L 1.28 0.96 4 0.96 4

(14265-45-3)

Mass Concentration mg/L <0.1700 1 0.0198 IZ]

13. Surfactants 1 Mass Concentration

14. Aluminum , total IZ] ug/L 75 .8 1 71.3 1

(7 429-90-5)

Mass Concentration

15. Barium, total IZ] ug/L 30.1 1 21.1 1

(7 440-39-3)

Mass Concentration

16. Boron, total IZ] ug/L 16.8 1 11.9 1

(7440-42-8)

Mass Concentration

17. (7Cobalt, total IZ] ug/L <0.300 1 <0.300 1

440-48-4)

Mass Concentration

18. Iron, total IZ] ug/L 132 1 105 1

(7439-89-6)

Mass Concentration

19. (7Magnesium, total IZ] ug/L 6950 1 5010 1

439-95-4)

Mass Molybdenum, Concentration ug/L 0.317 1 0.242 1 IZ]

20. total (7439-98-7)

Mass Manganese, total Concentration ug/L 34.4 1 24.0 IZ]

21. (7439-96-5) 1 Mass Concentration

22. Tin, total IZ] ug/L <1.00 1

<1.00 1 (7440-31-5)

Mass Concentration

23. Titanium, total IZ] ug/L <2.00 1 <2 .00 1

(7 440-32-6)

Mass EPA Form 3510-2C (Revised 3-19)

Page 24

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 0MB No. 2040-0004 check one Effluent (Optional)

Pollutant Units Maximum Long-Term Believed Believed (specify) Maximum Daily Long-Term Present Monthly Average Daily Number of Number of Absent Discharge Average Discharge Discharge Analyses Analyses (required) if available if available Value

24. Radioactivity Concentration pCi/L <2.35 1 1.77 1 Alpha, total [Z]

Mass Concentration pCi/L 1.26 1 0.23 1 Beta, total [Z]

Mass Concentration pCi/L 0.638 1 0.224 1 Radium, total [Z]

Mass Concentration pCi/L 0.350 1 0.376 1 Radium 226, total [Z]

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 Nor 0 . See instructions and 40 CFR 122.21 (e)(3).

EPA Form 3510-2C (Revised 3-19) Page 25

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EPA Identification Number NPDES Permit Number Fac;I TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant OMB No. 2040-0004

, ................,............. m,.......

OSN 113 ID*1,,11W*~"i :!-***-* *!l N~:.tllr- *-*

Presence or Absence Pollutant (check one)

Reason Pollutant Believed Present in Discharge Available Quantitative Data Believed Believed (specify units)

Present Absent

1. Asbestos 0

2. Acetaldehyde 0

3. Allyl alcohol 0

4. Allyl chloride 0

5. Amyl acetate 0

6. Aniline 0

7. Benzonitrile 0

8. Benzyl chloride 0

9. Butyl acetate 0

10. Butylamine 0

11 . Captan 0

12. Carbary!

0

13. Carbofuran 0

14. Carbon disulfide 0

15. Chlorpyrifos 0

16. Coumaphos 0

17. Cresol 0

18. Crotonaldehyde 0

19. Cyclohexane 0

EPA Form 3510-2C (Revised 3-19)

Page 27

EPA Identification Number NPDES Pemiit Number FacililyN*~ ~

TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant OSN 113 OMB No. 2D40-0004 1*~*-**"*'"*'""""'"'"'-'"",.. i11~1***1r.."1 :1;;;i........ llJrr.--...

Presence or Absence

~!I**"" IU 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) 0

21. Diazinon 0

22. Dicamba 0

23. Dichlobenil 0

24. Dichlone 0

25. 2,2-dichloropropionic acid 0

26. Dichlorvos 0

27. Diethyl amine 0

28. Dimethyl amine 0

29. Dintrobenzene 0

30. Diquat 0

31. Disulfoton 0

32. Diuron 0

33. Epichlorohydrin 0

34. Ethion 0

35. Ethylene diamine 0

36. Ethylene dibromide 0

37. Formaldehyde 0

38. Furfural 0

EPA Form 3510-2C (Revised 3-19) Page 28

EPA Identification Number NPDES Permit Number FocaityNa~ ~

TN2640030035 TN0020168 TVA Watts Bar Nuclear Plant OSN 113 OMB No. 2040-0004

• '""' ...., 11.,~1.-,1,,..~ ;1;;;;;a,,,,.................... ~U*--:l:'.11111'.Jl'J ,..... 11.'U

,~*-**""*'""'""""'" ..11,,,, *.. Presence or Absence Pollutant (check one) Available Quantitative Data Believed Believed Reason Pollutant Believed Present in Discharge (specify units)

Present Absent

39. Guthion

[Z]

40. lsoprene

[Z]

41. lsopropanolamine

[Z]

42. Kelthane

[Z]

43. Kepone

[Z]

44. Malathion

[Z]

45. Mercaptodimethur

[Z]

46. Methoxychlor

[Z]

47. Methyl mercaptan

[Z]

[Z]

48. Methyl methacrylate

49. Methyl parathion

[Z]

50. Mevinphos

[Z]

51. Mexacarbate

[Z]

52. Monoethyl amine

[Z]

53. Monomethyl amine

[Z]

54. Naled

[Z]

55. Naphthenic acid

[Z]

[Z]

56. Nitrotoluene

57. Parathion

[Z]

EPA Form 3510-2C (Revised 3-19) Page 29

EPA Identification Number NPDES Permit Number FaciUyNa~ ~

TN2640030035 TVA Watts Bar Nuclear Plant TN0020168 OSN 113 OMB No. 2040-0004

. II **::, ~.1**11., ~,,.,.,,eJIJlll ......,., :+........., ,, .,, * *,'-.."'i  : 1::L.., l\...""II j 1**:1 Ill 1**1* *

• Presence or Absence Pollutant (check one)

Reason Pollutant Believed Present in Discharge Available Quantitative Data Believed Believed (specify units)

Present Absent

58. Phenolsulfonate 0

59. Phosgene 0

60. Propargite 0

61. Propylene oxide 0

62. Pyrethrins 0

63. Quinoline 0

64. Resorcinol 0

65. Strontium 0

66. Strychnine 0

67. Styrene 0

2,4,5-T (2,4,5-trichlorophenoxyacetic 68.

acid) 0

69. TOE (tetrachlorodiphenyl ethane) 0 2,4,5-TP [2-(2,4,5-trichlorophenoxy) 70.

propanoic acidl 0 71 . Trichlorofon 0

72. Triethanolamine 0

73. Triethylamine 0

74. Trimethylamine 0

75. Uranium 0

76. Vanadium 0

EPA Form 3510-2C (Revised 3-19)

Page 30

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19 TVA Watts Bar Nuclear Plant 0MB No. 2040-0004 Pollutant check one Reason Pollutant Believed Present in Discharge Available Quantitative Data Believed Believed (specify units)

Present Absent

77. Vinyl acetate IZl

78. Xylene IZl

79. Xylenol IZl

80. Zirconium IZl 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 Nor 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 0MB No. 2040-0004 TVA Watts Ba r Nuclear Pla nt Congeners Pollutant check one Results of Screening Procedure Used or Believed Believed Manufactured Present Absent 2,3,7,8-TCDD 0

EPA Form 3510-2C (Revised 3-19) Page 33

A B C WATTS BAR NUCLEAR PLANT WATERSHED MAP 1 Legend m P, NPOESSlGN CJ OESIGNATEO WETLAND

@ CATCH BASIN 0 STORM WATER OUTFALL* WBN 2 0 STORMWATEROUTFALL *WBF

• STORMWATER MONITORING POINT

• NPDES OUTFALL

-* STORM WATER DITCH

- - STORM WATER DRAINAGE PIPE

-* ORAINWAYM'ATER

-t,. GENERAL YARD FLOW 3

8 PlANT BOUNDARY DRAINAGE BOUNDARY

- - - -===='"' 1,700

..... 00- ...., _, _ , , __

ro,..,_ou,,.._..,u...... ,..,,ra.,....,.,..,_.

4 * -,

10 11

Abbreviations 21.82 "A" -Alternate Flow Path E U1 CT CCW - Condenser Cooling Water 568.58 CRHP - Construction Runoff Holding Pond 590.4 CT - Cooling Tower U1 Main 419.686 201.89 U1 CT ERCW - Emergency Raw Cooling Water Condenser Slowdown OSN 113 HPFP - High Pressure Fire Protection co ~1_7_4_.0_1_9_ _ Watts Bar Reservoir RCW - Raw Cooling Water <'l V, V,

m (Tennessee River)

RSW - Raw Service Water a.

SCCW - Supplemental CCW 21.82 <D 0.019 SGBD - Steam Generator Blow Down E U2 CT s:u SCCWScreen Backwash

• • • • • * ** *** ***** * ** OSN 114 TC - Training Center u WTP - Water Treatment Plant CJ) 174 U2 Main Condenser 57.31 OSN 101 U2CT Slowdown 45.773 YHP Diffuser Overflow n Chickamauga Reservoir Discharge Weirs * ***** OSN 102 (Tennessee River) Discharge Once Through Cooling Water ERCW Discharge (5.31) (Note 4) 10.62 74.551 RCW Discharge (4.91) (Note 4) 75.024 Ice Condenser Chiller Packages & "A" (Note 3) Various Air Coolers (0.400) (Note 4)

"A" Intake Pumping Process Water via IPS Station {I PS) ERCW Header Flushes 1----------* HPFP (During Outages)

Training Center 0.001 Cooling Tower Trash Sluice Water via IPS Slowdown RWCA I

'---'-=="'-_,**

• 9 ERCW Traveling Screen Back Wash 0.0078 ERCW Strainers Back Wash 0.108 ERCW Strainers Leakage n 0.1878 Station Drainage Sumps 0.072 E p

,-.. CT Desilting 0.002 0,

0.285 ***~ Alum Pond 0 0 Basin 0

0 0 ** ********* Intermittent Flow 0.025 ["A" ci Vendor VWTPSump ...............*. - * -3> Raw Water Chemical Additive WTP 0.26 ~--------------------.t Waste IMP 103 t><(J Normally open valve Holding Pond 0.347 "O

C

~ Normally closed valve 0

"A" (non metal-cleaning only) D...

Liquid Radwaste System 0.004 Primary Laboratory Waste (0 .0001 )

....------=----,

Radioactive Floor & Equipment Drains, Tanks, Notes:

and Sumps (0.0039) 1. All flows in MGD.

2. Both units are operating in normal power 0.36 SGBD ,-.. generation mode.

0 0.105 ~

Secondary System 0 ro 3. Raw water additives will be used in the Intake

"! Drum Rinsing & Dewatering Make-Up Water WI/TP 0 Diesel Cleaning Coolant 0.057 >- Pumping Station and the Cooling Tower Basins.

4. For dual unit operation, two essential raw cooling "A"

water (ERCW) pumps and six raw cooling water 0.001 "A" (RCW) pumps are operating with a total

' - - - - - - 1 Condensate demin cleanup ~---------1 ~ Non-Rad Demin Water(0.011) maximum flow rate of 75.042 MGD .

Service Building Sump (0.020)

5. The flows through Ice Condenser chiller 0.001 Diesel Gen (D/G) Build ing Sump (0.0001)

HPFP System Metal-cleaning packages and various air coolers are doubled Emergency DIG Building Sump (0.0001)

Wastewaters from Unit 1 Only Operation. The ERCW , and 0.0002 CCW Pump Station Sump (0.0001)

Laboratory Waste (only when RCW discharge rates were rationed up by 21 % to Turbine NaOCI Building Sump & Dike (0.001) aligned to balance the flow diagram.

HPFP System Flushes (0.003) 0.7373 n Building LP/ULP)

Neutral Waste Tank Potable Water Line Leaks (0.001)

Station Storm Water Runoff (0.699)

MWS Potable Water Line Leaks 0.0002 Sump Chemical Storage Rainwater Release (0.001) TVA Watts Bar Nuclear Plant Groundwater Sump (0.001) 0.1993 NPDES Permit No:TN0020168 System Leakage & Maintenance Once Through Cooling Water Condenser tube/ CT ** ** ***** Asbestos Micro .....

n Flow Schematic (ERCW & RCW System) Main cleaning Worker decon Filtrate Feedwater & Condensate Systems "A" RSWSystem June 2021

TENNESSEE VALLEY AUTHORITY (TVA) -WATTS BAR NUCLEAR PLANT (WBN)

NPDES PERMIT NO. TN0020168 - APPLICATION FOR PERMIT RENEWAL Current Whole Effluent (WET) Toxicity Limits (permit effective February 1, 2017):

Outfall 101 - 7-day or 3-brood IC2s 2:: 2.8% effluent (35.7 TUc)

Monitoring Frequency = 2/year Outfall 113 - 7-day or 3-brood IC2s 2:: 6.7% effluent (14.9 TUc)

Monitoring Frequency= 2/year Proposed Whole Effluent (WET) Toxicity Requirements:

Outfall 101 - 7-day or 3-brood IC2s 2:: 2.8% effluent (35 .7 TUc)

Monitoring Frequency= 2/year, one during oxidizing biocide treatment and one during non-oxidizing biocide treatment Outfall 113 - 7-day or 3-brood IC2s 2:: 8.93% effluent (11 .2 TUc)

Monitoring Frequency= 2/year, one during oxidizing biocide treatment and one during non-oxidizing biocide treatment Outfalls 101 and 113:

In accordance with EPA's recommendation (Technical Support Document for Water Quality-based Toxics Control , EPA/505/2-90-001 ), and incorporating current flow rates associated with the operation of Unit 1 and Unit 2, WBN Outfall OSN101 and Outfall OSN113 would not be required to have chronic WET limits based on a demonstration of no Reasonable Potential (RP) for excursions above the ambient water quality chronic (CCC) criterion using effluent data for current operating conditions.

Following guidance in the Technical Support Document (TSO), when no RP exists , biomonitoring would be conducted at a frequency of only once every 5 years as part of the permit renewal process to document acceptable effluent toxicity and toxicity at the instream wastewater concentration (IWC) , and would serve only as a hard trigger for accelerated toxicity biomonitoring .

However, raw water used at the facility is treated with corrosion inhibitors and biocide products. These products, which can become concentrated in the cooling tower system, are discharged through Outfalls 101 and 113. The chemical makeup of the products used can change during the permit period and the combined toxicity effect of the chemicals is not known . Thus it is not feasible to control toxicity only by the application of chemical specific effluent limits to the discharge. Toxicity testing is a reasonable method to evaluate the toxicity impacts of the products in the effluent. Therefore , TVA believes it is appropriate to incorporate the proposed WET requirements stated above for WBN Outfalls OSN101

and OSN113 that are specified in the current Biocide Corrosion Treatment Plan (BCTP), with one test per outfall during oxidizing biocide treatment and one test per outfall during non-oxidizing biocide treatment. TVA is requesting permit language consistent with the BCTP.

The following RP determination utilizes 10 years (20 studies) of WET biomonitoring data collected for Outfalls 101 and 113. Table 1 summarizes Outfall 101 biomonitoring results while Table 2 summarizes Outfall 113 biomonitoring results.

Table 1. Summary of WBN Outfall OSN101 WET Biomonitoring Results:

Acute Results Chronic Results

{96-h Survival)

Test Date Test Species  % Survival in Study Study Highest Toxicity IC2s Toxicity Concentration Units (TUa) Units (TUc)

Tested Htf'.!Othesis Based NOEC:

1. Feb. 2-9, 1994 Ceriodaphnia dubia 100%

<1 .0 10.2t Pimepha/es prome/as 100% (IC2s:<1 .0)

2. Aug. 26 - Sep. 22, 1994 Ceriodaphnia dubia 100%

<1.0 <1.0 Pimepha/es prome/as 100%

3. Feb. 1-8, 1995 Ceriodaphnia dubia 100% >100%

<1.0 <1. 0 Pimepha/es prome/as 98% >100%

4. Aug . 9-16, 1995 Ceriodaphnia dubia 100% >100%

<1.0 <1 .0 Pimephales promelas 100% >100%

5. Feb. 23 - Mar. 1, 1996 Ceriodaphnia dubia 100%

<1.0 <1.0 Pimepha/es promelas 98%

6. Aug . 22-29, 1996 Ceriodaphnia dubia 89% >100%

<1 .0 <1.0 Pimepha/es prome/as 100% >100%

7. Feb. 19-26, 1997 Ceriodaphnia dubia 80% 58.0%

<1.0 1.7 Pimephales promelas 100% >100%

8. Aug . 12-20, 1997 Ceriodaphnia dubia 0% 30.9%

Pimephales promelas 3.1 3.2 100% >100%

9. Feb. 24 - Mar. 3, 1998 Ceriodaphnia dubia 100% >100%

<1.0 <1.0 Pimephales promelas 100% >100%

10. Sep. 16, 1998 Ceriodaphnia dubia 0% 32.4%

3.2 3.1 Pimepha/es promelas 98% >100%

11. Mar. 2-9, 1999 Ceriodaphnia dubia 100% >100%

<1 .0 2.5 Pimephales promelas 90% 40%

12. Sep. 9 - Oct. 6, 1999 Ceriodaphnia dubia 100% >13.2%

<7.58 <7.58 Pimeph ales promelas 100% >13.2%

13. Apr. 4-11, 2000 Ceriodaphnia dubia 100% >13.2%

Mar. 22-29, 2000 <7.58 <7.58 Pimepha/es prome/as 98% >13.2%

14. Oct. 25 - Nov. 1, 2000 Ceriodaphnia dubia 100% >13.2%

<7.58 <7.58 Pimepha/es prome/as 100% >13.2%

Summary of WBN Outfall OSN101 WET Biomonitoring Results (continued):

Acute Results {96-h Survival} Chronic Results

% Survival in Test Date Test Species Study Study Highest Toxicity IC2s Toxicity Concentration Units (TUa) Units (TUc)

Tested

15. Apr. 18-25, 2001 Ceriodaphnia dubia 89% <7.58 >13.2% <7.58 Apr. 17-24, 2001 Pimephales promelas 95% >13.2%

16. Oct. 15-22, 2001 Ceriodaphnia dubia 100% <7.58 >13.2% <7.58 Pimepha/es prome/as 100% >13.2%

17. Apr. 14-19, 2002 Ceriodaphnia dubia 100% <7.58 >13.2% <7.58 Apr. 28 - May 3, 2002 Pimephales promelas 100% >13.2%

18 Oct. 22-29, 2002 Ceriodaphnia dubia 100% >13.2%

Oct. 21-28, 2002 Pimephales promelas

<7.58 <7.58 100% >13.2%

19. Apr. 14-21 , 2003 Ceriodaphnia dubia 100% >13.2%

<7.58 <7.58 Pimepha/es promelas 100% >13.2%

20. Nov. 3-10, 2003 Ceriodaphnia dubia 90% 12.1%

<7.58 8.3 Pimepha/es promelas 100% >13.2%

21. Apr. 20-27, 2004 Ceriodaphnia dubia 100% >13.2%

Pimephales promelas

<7.58 <7.58 98% >13.2%

22. Nov. 8-13, 2004 Ceriodaphnia dubia 100% >19.2%

Pimepha/es prome/as

<5.20 <5.20 100% >19.2%

23. Apr. 12-19, 2005 Ceriodaphnia dubia 100% >19.2%

Pimephales promelas

<5.20 <5 .20 100% >19.2%

24. Nov. 2-9, 2005 Ceriodaphnia dubia 100% >19.2%

Pimephales prome/as

<5.20 <5.20 98% >19.2%

25. Apr. 18-25, 2006 Ceriodaphnia dubia 100% <5.20 >19.2% <5.20 Pimepha/es prome/as 100% >19.2%

26. Aug . 22-29, 2006 Ceriodaphnia dubia 100% <5.20 >19.2% <5.20 Pimepha/es promelas 100% >19.2%

27. Apr. 3-10, 2007 Ceriodaphnia dubia 100% <5.20 >19.2% <5.20 Pimepha/es prome/as 100% >19.2%

28. Oct. 16-23, 2007 Ceriodaphnia dubia 100% <5.20 >19.2% <5.20 Pimephales promelas 100% >19.2%

29. May 6-13, 2008 Ceriodaphnia dubia 100% >19.2%

<5.20 <5.20 Pimepha/es promelas 100% >19.2%

Summary of WBN Outfall OSN101 WET Biomonitoring Results (continued):

Acute Results ~96-h Survival~ Chronic Results

% Survival in Test Date Test Species Study Study Highest Toxicity Units IC2s Toxicity Concentration (TUa) Units (TUc)

Tested

30. Nov.4-11, 2008 Ceriodaphnia dubia 100% >19.2%

<5.20 <5.20 Pimepha/es prome/as 100% >19.2%

31 . May 5-12 , 2009 Ceriodaphnia dubia 100% >19.2%

<5.20 <5.20 Pimephales promelas 100% >19.2%

32. Nov. 3-10, 2009 Ceriodaphnia dubia 100% >19.2%

<5.20 <5.20 Pimepha/es prome/as 100% >19.2%

33. May 4-11, 2010 Ceriodaphnia dubia 100% >19.2%

Pimephales promelas <5.20 <5.20 100% >19.2%

34. Sep. 28-Oct.5, 2010 Ceriodaphnia dubia 100% <7.58 >13.2% <7.58 Pimepha/es promelas 98% >13.2%

35. Mar. 29-Apr. 5, 2011 Ceriodaphnia dubia 100% <7.58 >13.2% <7.58 Pimepha/es prome/as 100% >13.2%

36. Oct. 4-11 , 2011 Ceriodaphnia dubia 100% <8.93 >11.2% <8.93 Pimepha/es prome/as 100% >11.2%

37. May 8-15 , 2012 Ceriodaphnia dubia 100% <8. 93 >11.2% <8.93 Pimephales promelas 100% >11 .2%

38. Nov. 6-13, 2012 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimephales promelas 100% >11.2%

39. May14-21 ,2013 Ceriodaphnia dubia 100% <8.93 >11.2% <8.93 Pimepha/es promelas 100% >11.2%

40. Nov. 5-12, 2013 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es prome/as 100% >11 .2%

41 . May 13-20, 2014 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es promelas 100% >11.2%

42. Oct. 7-14 , 2014 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es prome/as 100% >11 .2%

Summary of WBN Outfall OSN101 WET Biomonitoring Results (continued):

Acute Results (96-h Survival) Chronic Results

% Survival in Test Date Test Species Study Study Highest Toxicity Units IC2s Toxicity Concentration (TUa) Units (TUc)

Tested

43. May 5-12, 2015 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimephales promelas 100% >11.2%

44. Nov. 3-10 , 2015 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es promelas 100% >11 .2%

45. May 10-17, 2016 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimephales promelas 100% >11 .2%

46. Oct. 4-11, 2016 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimephales promelas 100% >11 .2%

47. Jun.6-13, 2017 Ceriodaphnia dubia 100% <8.93 >11.2% <8.93 Pimephales promelas 100% >11.2%

48. Oct. 3-10, 2017 Ceriodaphnia dubia 100% <8.93 >11.2% <8.93 Pimepha/es promelas 100% >11.2%

49. Apr. 3-10, 2018 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es promelas 100% >11.2%

50. Nov. 6-13, 2018 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es prome/as 100% >11 .2%

51. May7-14, 2019 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es promelas 100% >11.2%

52. Oct. 8-15, 2019 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimephales promelas 100% >11.2%

53. Jun. 3-10, 2020 Ceriodaphnia dubia 100% >11 .2%

<8.93 <8.93 Pimephales promelas 100% >11 .2%

54 .. Oct. 6-13, 2020 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es prome/as 100% >11.2%

Summary of WBN Outfall OSN101 WET Biomonitoring Results (continued):

Acute Results (96-h Survival) Chronic Results

% Survival in Test Date Test Species Study Study Highest Toxicity Units IC2s Toxicity Concentration (TUa) Units (TUc)

Tested

55. May 4-11, 2021 Ceriodaphnia dubia 100% <8.93 >11 .2% <8.93 Pimepha/es prome/as 100% >11.2%

n (total) 110 55 55 n (last 20 studies) 40 20 20 Maximum 100% <8.9 <8.9 Minimum 100% <8.9 <8.9 Mean 100% <8.9 <8.9 CV 0.0 <0.1 <0.1 tstatistical endpoint biased by selection of the dilution series. IC2s derived from original data.

Current permit was effective February 1, 2017. Applicable permit limit: IC2s ~ 2.8%, 35.71 TUc.

Applicable permit dilution series: Control , 0.7%, 1.4%, 2.8%, 5.6%, 11 .2%.

Shaded area (10 years) depicts studies used in Reasonable Potential calculations.

Table 2. Summary of WBN Outfall OSN113 WET Biomonitoring Results:

Acute Results Chronic Results (96-h Survival)

Test Date  % Survival in Test Species Highest Study Toxicity Study Toxicity Concentration IC2s Units (TUa) Units (TUc)

Tested IC2sBased

1. Oct. 19-26, 1999 Ceriodaphnia dubia 100% >41.2%

Pimephales promelas <2.43 <2.43 98% >41 .2%

2. Apr. 4-11 , 2000 Ceriodaphnia dubia 90% 19.5%

Pimephales prome/as <2.43 5.0 100% >41.2%

3. Oct. 25- Nov. 1, Ceriodaphnia dubia 100% >41 .2%

2000 Pimepha/es promelas <2.43 <2.43 98% >41 .2%

4. Apr. 18-25, 2001 Ceriodaphnia dubia 100% >41.2%

Pimephales prome/as <2.43 4.0 100% 25.1%

5. Oct. 15-23, 2001 Ceriodaphnia dubia 100% >41 .2%

Pimephales promelas <2.43 <2.43 100% >41 .2%

6. Apr. 14-19, 2002 Ceriodaphnia dubia 100% >41.2%

Apr. 28 - May 3, Pimephales promelas <2.43 5.0 93% 20.0%

2002

7. Oct. 21-28, 2002 Ceriodaphnia dubia 100% >41.2%

Pimephales prome/as <2.43 <2.43 98% >41 .2%

8. Apr. 15-22, 2003 Ceriodaphnia dubia 100% >41.2%

Pimephales promelas <2.43 <2.43 93% >41 .2%

9. Nov. 3-10 , 2003 Ceriodaphnia dubia 100% >41.2%

Pimephales promelas <2.43 <2.43 100% >41.2%

10. Apr. 20-27, 2004 Ceriodaphnia dubia 100% >41 .2%

Pimepha/es prome/as <2.43 <2.43 100% >41 .2%

11 . Nov. 9-16 , 2004 Ceriodaphnia dubia 100% >30.4%

Pimepha/es promelas <3.29 <3. 29 100% >30.4%

12. Apr. 12-19, 2005 Ceriodaphnia dubia 100% >30.4%

Pimephales prome/as <3.29 <3.29 98% >30.4%

13. Nov. 2-9, 2005 Ceriodaphnia dubia 100% >30.4%

Pimepha/es prome/as <3.29 <3.29 98% >30.4%

14. Apr. 18-25, 2006 Ceriodaphnia dubia >30.4%

100% <3.29 Pimepha/es prome/as <3.29 100% >30.4%

Summary of WBN Outfall OSN113 WET Biomonitoring Results (continued):

Acute Results Chronic Results (96-h Survival)

% Survival in Test Date Test Species Highest Study Toxicity Study Toxicity Concentration IC2s Units (TUa) Units (TUc)

Tested

15. Aug . 22-29, 2006 Ceriodaphnia dubia 100% >30.4%

Pimepha/es prome/as <3.29 <3.29 100% >30.4%

16. Apr. 3-10, 2007 Ceriodaphnia dubia 100% >30.4%

<3.29 <3.29 Pimepha/es prome/as 100% >30.4%

17. Oct. 16-23, 2007 Ceriodaphnia dubia 100% >30.4%

<3.29 <3.29 Pimepha/es prome/as 100% >30.4%

18. May 6-13, 2008 Ceriodaphnia dubia 100% >30.4%

<3.29 <3.29 Pimepha/es prome/as 100% >30.4%

19. Nov. 4-11 , 2008 Ceriodaphnia dubia 100% >30.4%

<3.29 <3.29 Pimephales promelas 100% >30.4%

20. Apr. 21-28 , 2009 Ceriodaphnia dubia 100% >30.4%

<3.29 <3.29 Pimephales promelas 100% >30.4%

21 . Nov. 3-10, 2009 Ceriodaphnia dubia 100% >30.4%

<3.29 <3.29 Pimephales promelas 100% >30.4%

22. May 4-11 , 2010 Ceriodaphnia dubia 100% >30.4%

<3.29 <3.29 Pimepha/es prome/as 100% >30.4%

23 . Sep. 28 - Oct. 5, Ceriodaphnia dubia 100% <32 .0%

2010 <3.13 <3.13 Pimephales promelas 100% <32.0%

24 . Mar. 31 -Apr. 7, Ceriodaphnia dubia 100% <32.0%

2011 <3.13 <3.13 Pimepha/es promelas 100% <32.0%

25 . Oct. 4-11 , 2011 Ceriodaphnia dubia 100% <3.73 <26.8% <3.73 Pimepha/es promelas 100% <26.8%

26. May 8-15, 2012 Ceriodaphnia dubia 100% <3.73 <26.8% <3.73 Pimephales promelas 100% <26.8%

27. Nov. 6-13, 2012 Ceriodaphnia dubia 100% <3.73 <26.8% <3.73 Pimepha/es promelas 100% <26.8%

28. May 14-21 , 2013 Ceriodaphnia dubia 100% <3.73 <26.8% <3.73 Pimephales promelas 100% <26.8%

29. Nov. 5-12 , 2013 Ceriodaphnia dubia 100% <3.73 <26.8% <3.73 Pimepha/es promelas 100% <26.8%

Summary of WBN Outfall OSN113 WET Biomonitoring Results (continued):

Acute Results Chronic Results (96-h Survival)

Test Date  % Survival in Test Species Highest Study Toxicity Study Toxicity Concentration Units (TUa) IC2s Units (TUc)

Tested

30. May 13-20, 2014 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimepha/es prome/as 100% <26.8%

31. Oct. 7-14 , 2014 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimephales prome/as 100% <26.8%

32 . May 5-12 , 2015 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimephales promelas 100% <26.8%

33 . Nov. 3-10, 2015 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimepha/es prome/as 100% <26.8%

34. May 10-17, 2016 Ceriodaphnia dubia 100% <26.8%

<3. 73 <3.73 Pimepha/es prome/as 100% <26.8%

35. Oct. 4-11, 2016 Ceriodaphnia dubia 100% <26.8%

<3. 73 <3.73 Pimepha/es prome/as 100% <26.8%

36. Jun. 6-13, 2017 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimephales promelas 100% <26.8%

37 . Oct. 3-10 , 2017 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimephales promelas 100% <26.8%

38 . Apr. 3-10, 2018 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimephales promelas 100% <26.8%

39. Nov. 6-13, 2018 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimepha/es prome/as 100% <26.8%

40. Jul. 9-16, 2019 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimepha/es prome/as 100% <26.8%

41 . Nov. 5-12 , 2019 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimepha/es prome/as 100% <26.8%

Summary of WBN Outfall OSN113 WET Biomonitoring Results (continued):

Acute Results Chronic Results (96-h Survival)

Test Date  % Survival in Study Study Test Species Highest Toxicity Toxicity Concentration IC2s Units Units Tested (TUa) (TUc)

42. Jul. 7-14 , 2020 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimephales promelas 100% <26.8%

43. Oct. 6-13 , 2020 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimepha/es promelas 100% <26.8%

44. May4-11 , 2021 Ceriodaphnia dubia 100% <26.8%

<3.73 <3.73 Pimephales prome/as 100% <26.8%

n (total) 88 44 44 n (last 20 studies) 40 20 20 Maximum 100% <3.7 <3.7 Minimum 100% <3.7 <3.1 Mean 100% <3.7 <3.0 CV 0.0 <0.1 <0.1 Current permit was effective February 1, 2017. Applicable permit limit: IC2s ~ 6.7%, 14.9 TUc.

Applicable permit dilution series: Control, 1.68%, 3.4% , 6.7%, 13.4%, 26.8% .

Shaded area (10 years) depicts studies used in Reasonable Potential calculations.

OSN 101 Reasonable Potential (RP) Determination Based on OSN101 Effluent Data Only Technical Support Document, Text Box 3-2 and Section 3.3 (EPA/505/2-90-001)

DILUTION OSN101 Discharge Flow= 57.31 MGD (based on June 2021 flow schematic)

Stream 1Q10 = 2062 MGD (based on 2017 permit)

Dilution Factor (DF): OF= Qs/QW = 2062/57.31 = 35.98 lnstream Wastewater Concentration (IWC): IWC = DF-1 x 100 = 2.8%

Chronic TOXICITY Step 1 20 WET Studies (10 years), Maximum Observed Toxicity is <8.9 TUc.

[Average toxicity= <8.9 TUc; current compliance limit= 35 .71 TUc (IC2s ~ 2.8%

effluent).]

Step 2-3 Coefficient of variation (CV)= 0.1. For 20 samples and a CV of 0.1, the multiplying factor (99% confidence level and 99% probability) is 1.2.

Step 4 Low river flow= 2062 MGD and WBN Outfall OSN101 discharge= 57.31 MGD = 2.80% lnstream Waste Concentration (IWC) after mixing.

At a 0.028 IWC: 8.9 TUc x 1.2 x 0.028 = 0.30 TUc Step 5 0.30 TUc is less than the ambient CCC criterion of 1.0 TUc. This outcome demonstrates that no Reasonable Potential for excursions above the CCC exists, based on effluent data obtained from testing conducted under operating conditions for the past 10 years.

OSN 113 Reasonable Potential (RP) Determination Based on OSN113 Effluent Data Only Technical Support Document, Text Box 3-2 and Section 3.3 (EPN505/2-90-001)

DILUTION OSN113 Discharge Flow= 201 .89 MGD (based on June 2021 flow schematic)

Stream 1Q10 = 2062 MGD (based on 2017 permit)

Dilution Factor (DF): OF = (Qs + Qw) / Qw = (2062 + 201.89) / 201.89 = 11.2 lnstream Wastewater Concentration (IWC): IWC = DF- 1 x 100 = 8.93%

Chronic TOXICITY Step 1 20 WET Studies (10 years), Maximum Observed Toxicity is 3.7 TUc.

[Average toxicity= 3.7 TUc; compliance limit= 14.9 TUc (IC2s ?: 6.7% effluent).]

Step 2-3 Coefficient of variation (CV) = 0.1. For 20 samples and a CV of 0.1, the multiplying factor (99% confidence level and 99% probability) is 1.2.

Step 4 Low stream flow plus WBN Outfall OSN113 discharge= 2263.89 MGD and WBN Outfall OSN113 discharge= 201 .89 MGD = 8.93% lnstream Waste Concentration (IWC) after mixing.

At a 0.0673 IWC: 3.7 TUc x 1.2 x 0.0893 = 0.40 TUc Step 5 0.40 TUc is less than the ambient CCC criterion of 1.0 TUc. This outcome demonstrates that no Reasonable Potential for excursions above the CCC exists, based on effluent data obtained from testing conducted under operating conditions for the past 10 years.