ML20353A291

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Enclosure 14 - Response to Request for Additional Information - Monthly Discharge Monitoring Reports
ML20353A291
Person / Time
Site: Westinghouse
Issue date: 12/18/2020
From:
Westinghouse
To:
Office of Nuclear Material Safety and Safeguards
Shared Package
ML20353A275 List:
References
LTR-RAC-20-94, EPID L-201-RNW-0016
Download: ML20353A291 (43)
v • d • e


Text

WESTINGHOUSE NON-PROPRIETARY CLASS 3 4 to LTR-RAC-20-94 Date: December 18, 2020 Enclosure 14 Response to Request for Additional Information Monthly Discharge Monitoring Reports

e inghouse Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA SC Department of Health & Environmental Direct tel: 803-647-1000 Control Direct fax: 803-695-3964 Bureau of Water e-mail: logsdocj@westinghouse.com ATTN: Compliance Assurance Division 2600 Bull Street Columbia, South Carolina 29201 Our ref: LTR-RAC-19-93 SC-DHEC NPDES DMR - October 2019 November 22, 2019

Dear Sirs and Madams:

RE: NPDES Permit #SC0001848 The enclosed Discharge Monitoring Report is submitted to fulfill the NPDES summary reporting requirements. This monthly summary covers the monitoring period from October 1, 2019, through October 31, 2019. All received sample results were within NPDES permit limits.

On October 2, 16, 23, and 30, the weekly total residual chlorine (TRC) sample results tested below the POL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

On October 9, the monthly E. coli result tested below the POL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

If you have any questions regarding the enclosed reports, please contact Ms. Cynthia Logsdon, Environment Health & Safety, at (803) 647-3171.

TINGHOUSE ELECTRIC COMPANY Michael Annacone Vice President, Columbia Fuel Operations

© 2019 Westinghouse Electric Company LLC All Rights Reserved

1.11~\.....nt-1.n.u.ci l't',lVl'U. 1 v.n..11-,u .n..cicvn...1 {J.-'1VLIY NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 79 CM FINAL LIMITS PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD DMRVA i-ID: 07/01/2014 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE:Read ~nstructions before completing this form.

I I I

-x LOCATION 5801 BLUFF RD FROM 2019 I 10 I 01 TO 2019 I 10 31 PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 00300 LAB ID: 40561 SAMPLE -lrlt:************* *************** ****** *************** *************** 01/07 GR Dissolved Oxygen MEASUREMENT ****** 7.6

-lrlt:************* *************** *************** *************** 0 PERMIT *************** *************** ****** 1.0 *************** ******'k-k******* MG/L 01/07 GR

        • -k-k MLOC=1 REQUIREMENT *****1rlr****~-k'k *************** INST MIN "Irle************* ***"k'k*"k'k*******

00310 LAB ID: 10120 SAMPLE *************** 01/07 GR BOD 5 Day MEASUREMENT 13.6 22.9 12.7 17.9

                              • 0 (20 Degrees C) PERMIT 30 60 LBS/ ****"k-k********* REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MOAVG DAILYMX 00400 LAB ID: 40561 SAMPLE *************** *************** ****** **"k-k*********** 01/01 CN pH MEASUREMENT ****** 6.42 8.47
                              • ***********"Irle** *************** 0 Standard Units PERMIT *************** *************** ****** REPORT **'k"k*********** REPORT SU 01/01 CN REQUIREMENT ******

MLOC=P ******"'******"k"k *************** INST MIN *************** INST MAX 00530 LAB ID: 40561 SAMPLE *************** 01/07 24 Total Suspended MEASUREMENT 7.7 9.1 8.1 10.0

                  • "Ir***** 0 Solids (TSS) PERMIT 32 64 LBS/ ****"Irle********* REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MO AVG DAILYMX 00610 LAB ID: 40561 SAMPLE *************** 01/07 24 Ammonia - Nitrogen MEASUREMENT 2.83 7.67 2.36 5.89
                              • 0 Total as N PERMIT 50 100 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MOAVG DAILYMX 00665 LABID:32010 SAMPLE *************** *************** ****** *************** 01/30 24 Phosphorous, Total MEASUREMENT ****** 1.2 1.2
                              • *************** *************** 0 PERMIT 'k'k************* *************** ****** ****"k-k********* REPORT REPORT MG/L 01/30 24 REQUIREMENT ******

MLOC=1 *************** *************** *************** MOAVG DAILYMX 50050 LAB ID: 40561 SAMPLE *************** *************** ***************

01/01 CN Flow in Conduit or MEASUREMENT 0.105 0.156

                              • *************** *************** ******** 0 Thru Treatment Plant MLOC=1 PERMIT REPORT REPORT MGD ***********'k"k** *************** ******"k-k******* ******** 01/01 CN REQUIREMENT MOAVG DAILYMX *************** *************** *******'k"k****** ********

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENAL TY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE

~~

THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE /

AMO BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE

_803 647-3171 2019 11 22 SIGNIFICANT PENAL TIES FOR SUBMITTING TYPED OR PRINTED FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR ,/->l&Th!MURE OF PRINCIPAL ARE.l NUMBER YEAR MO DAY KNOWING VIOLATIONS. / EXECUTIVE CODI OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P -Allowable PH is 6.0 -9.0 04/26/2017 PAGE 1 OF 2

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 DISCHARGE NUMBER ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER FINAL LIMITS MONITORING PERIOD '\. 07/01/2014 0"t'l/2018 5 5 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Rea d Instructions before completing this form.

FROM TO LOCATION 5801 BLUFF RD 2019 10 01 2019 10 31 X

PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 50060 LAB ID: 40561 SAMPLE *************** *************** ****** *********'ft***** 0 01/07 GR MEASUREMENT ****** *************** 0.01 0.05 Total Residual *************** ***************

Chlorine PERMIT *************'k'k *************** ****** ****tt********* 0.5 1.0 MG/L REQUIREMENT *************'1<1' *************** ****** **********"lrlrlt** 01/07 GR MLOC=1 MOAVG DAILYMX 51040 LABID:32571 SAMPLE ~************* *************** ****** *************** 0 01/30 GR MEASUREMENT ****** 0 0 E.Coli ***********~** *************** ***************

(MPN/1OOml) PERMIT *************** *************** ****** *************** 126 349 MPN/

REQUIREMENT **************"k *************** ****** *************** 30DAVGEO OAILYMX 100 ML 01/30 GR MLOC=1 72107 LABID:4O561 ****** 0 01/01 CN SAMPLE *************'Irle *************** ****** *************** ***************

Length of Longest pH MEASUREMENT ***************

0

                              • *************** *************** l i

Excursion PERMIT *****-k"k******** *************** ****** *************** *************** 60 MIN-UT I

REQUIREMENT 1rlr***********-k"k *************** ****** *************** ****"lrlr********* INST MAX I ES 01/01 CN MLOC=P I, I

72108 LABID:4O561 SAMPLE *************"lrlr *************** ****** *************** *************** 0 01/01 CN

% of Time Exceeding MEASUREMENT *************** *************** ****** *************** *************** 0 I

pH Limits PERMIT *****-k"k*******1< *************** ****** *********"ir***** *-Jrltrl(*********** 1 PER-REQUIREMENT ************""*'k *************** ****** ****1:-'k********* **1:-k*"k1ir******** INST MAX CENT 01/01 CN MLOC=P I

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF I.AW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE

~~

Vice President, Columbia Fuel Operations 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 -----sfia 647-3171 2019 11 22 KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT TYPED OR PRINTED THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING SIGN~RS-OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS. Op ICER OR AUTHORIZED AGENT CODEI COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P-Allowable PH is 6.0 -9.0 On October 2, 16, 23 and 30, the weekly total residu. ~I chlorine (TRC) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011 On October 9, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 8-2004.

@Westinghouse Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA SC Department of Health & Environmental Direct tel: 803-647-1000 Control Direct fax: 803-695-3964 Bureau of Water e-mail: logsdocj@westinghouse.com ATTN: Compliance Assurance Division 2600 Bull Street Columbia, South Carolina 29201 Our ref: LTR-RAC-19-102 SC-DHEC NPDES DMR - November 2019 December 19, 2019

Dear Sirs and Madams:

RE: NPDES Permit #SC0001848 The enclosed Discharge Monitoring Report is submitted to fulfill the NPDES summary reporting requirements. This monthly summary covers the monitoring period from November 1, 2019, through November 30, 2019. All received sample results were within NPDES permit limits.

On November 13, 20 and 27, the weekly total residual chlorine (TRC) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

On November 13, the monthly E.coli result tested below the POL of 1 MPN/100 ml and was therefore reported as zero. E.coli is analyzed by Access Analytical according to SM 9223 B-2004.

If you have any questions regarding the enclosed reports, please contact Ms. Cynthia Logsdon, Environment Health & Safety, at (803) 647-3171.

Sincerely,

~~OMPANY Michael Annacone Vice President, Columbia Fuel Operations

© 2019 Westinghouse Electric Company LLC All Rights Reserved

.1.11.~.nr,..n.u-i:.i 1nv1,1..1v1u1,u- .n..c,cvn.1. (U1V1I\J NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 I 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121  ! 79 CM FINAL LIMITS PERMIT NUMBER I DISCHARGE NUMBER MONITORING PERIOD DMR VALID: 07/01/2014-03/31/2018 N01E: Read Instructions before completing this form.

FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR I MO I DAY I YEAR I MO I DAY LOCATION 5801 BLUFF RD FROM 2019 I 11 I 01 I TO 2019 I 11 I 30

~

PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS 00300 LAB ID: 40561 Dissolved Oxygen SAMPLE MEASUREMENT AVERAGE intr,trk*1ri:-k*1rlrlrlt:**

~*1ri:-k**

MAXIMUM

      • intr,!rk********
          • 1rlrlrlt:intr,trk**

-- UNITS MINIMUM 8.6 AVERAGE

    • ~*'1rlrlrlr**
    • '*"*""***~**

MAXIMUM

~~**

UNITS 01/07 GR MLOC=1 PERMIT REQUIREMENT

~*****1ri:-k**

'**'1rlrlr****"k'lrl:-k**

          • ~***

1.0 INST MIN

  • -lrtt1rlrlrlt:**"k'k'k**
                      • I<-***

.t.t.t.t.t:A.t.t:AA.tl<:.tlrlr MG/L 0

01/07 GR 00310 LAB ID: 10120 SAMPLE **~intr,!rk*** 01/07 GR 9.5 13.7 **~~***** 10.4 17.6 BOD-5 Day MEASUREMENT 0 (20 Degrees C) PERMIT 30 60 LBS/ ***rlr'k*****intr,trk REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY ***rlr-k********* MO AVG DAILYMX LAB ID: 40561 ******

00400 SAMPLE intr,!rk*1ri:-k*intr,trk** intr,!rk*********** ~~** 01/01 CN

      • tt* 6.34 8.50 pH MEASUREMENT *****1rlrlrlt:intr,trk** *************** ~*~**

0 Standard Units REPORT REPORT SU 01/01 CN MLOC=P PERMIT REQUIREMENT

    • rlr-k*****1ri:-k**

rlr-k*******rlr'k**

    • rlr'kintr,trk****** *-* INST MIN
    • '*"*""*****"k'k'k**
      • ""********""** INST MAX 00530 LAB ID: 40561 SAMPLE 1rl:-k1ri:-k***intr,trk** 01/07 24 Total Suspended MEASUREMENT 4.1 5.3 *"'******11"l.:1rlr-k**

4.6 6.1 0

Solids (TSS) PERMIT 32 64 LBS/ ****infr,!rkintr,lrk*** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILYMX DAY ********'II:'!~**** MOAVG DAILYMX 00610 LAB ID: 40561 SAMPLE 1rl:-k1ri:-k**intr,trk*** 01/07 24 Ammonia - Nitrogen MEASUREMENT 4.31 8.68 ****1ri:-k*****>l-1r*

4.37 6.67 0

Total as N PERMIT 50 100 LBS/ ********iL-'lr*iL-'lr** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILYMX DAY *~**1ri:-k**** MOAVG DAILYMX 00665 LABID:32010 Phosphorous, Total SAMPLE MEASUREMENT 1ri:-k**-******* ***--******- -*

  • - *-1ri:-k***intr,trk**

1.2 1.2 01/30 24 rlr'k************ **rlr'k********** 1ri:-k1ri:-k***rlr'k***

0 PERMIT rlr'k************ *********intr,!rk** ****'1rlrlrlr**-A-1r*** REPORT REPORT MG/L 01/30 24 MLOC=1 REQUIREMENT rlr-k*******rlr'k** *************** ***rlr-k**~** MO AVG DAILYMX 50050 LAB ID: 40561 Flow in Conduit or Thru Treatment Plant SAMPLE MEASUREMENT 0.107 0.185

  • ~*****>l-1r*
        • -lrtt********
    • 1ri:-kiL-'lr***-A-1r***
    • 1ri:-kiL-'lr********
  • '1rlrlrlrintr,!rk****** .............. 0 01/01 CN MLOC=1 NAME/TITLE PRINCIPAL EXECUTIVE OFFICER Michael Annacone PERMIT REQUIREMENT REPORT MO AVG REPORT DAILYMX I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM MGD ***************
    • '1rlrlrlr*********
  • rlr-k1rlrlrlt:*~
  • -lrtt****rk'k****
    • intr,trk**1rlrlrrl:**

- 01/01 CN DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE

~--

THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE AMD BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE ,1

- 803 647-3171 2019 12 19 SIGNIFICANT PENALTIES FOR SUBMITTING TYPED OR PRINTED

,/

FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR SIGNATURE OF PRINCIPAL AREA NUMBER YEAR MO DAY KNOWING VIOLATIONS. EXECUTIVE CODE OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P-Allowable PH is 6.0-9.0 04/26/2017 PAGE OF 2

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR DISCHARGE NUMBER ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER 79 CM FINAL LIMITS MONITORING PERJOD DMR VALID: 07/01/2014-03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this form.

FROM TO LOCATION 5801 BLUFF RD 2019 11 01 2019 11 30 NO. FREQUENCY SAMPLE

[X PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 50060 LAB ID: 40561 Total Residual SAMPLE MEASUREMENT "k'k'k1rlr1rlrlrlr*1rlrlr1rlr

~*1rlr1rlr*1rlrlr1rlr

  • 1rlr1rlr**1rlr*1rlrlr1rlr
  • 1rlr1rlr1rlr1rlr'lrlrrl,:1rlr
  • 1rlr1rlr*

1rlr1rlr1rlrlr*rlrk'lrlt1rlr 1rlr'lrlr1rlrlr*~'lrlr 0.17 0.66 0 01/07 GR Chlorine PERMIT 'lrlrrl,:*'lrlrrl,:1rlr1rlr1rlr *1rlr1rlr1rlr1rlr~1rlr ****** ~*'lrlr'lrlr*'lrlr 0.5 1.0 MG/L

  • '1nfr'1nfr*

MLOC=1 REQUIREMENT 1rlr1rlr*1rlrlr*1rlr1rlr1rlr *1rlr1rlr1rlr1rlr1rlr1rlr** 'lrlr'irlrlrlr'lrlr~

MO AVG DAILYMX 01/07 GR 51040 LAB ID: 32571 SAMPLE rlrk'lrlt1rlrlr*1rlr1rlr1rlr *1rlr1rlr1rlr1rlr1rlr**1rlr

  • 1rlr1rlr* 1rlrlrrlrk'lrlt*1rlrlr*1rlr 0 01/30 GR
            • 0 0 E. Coli MEASUREMENT 1rlr*1rlr'lrlrrl,:1rlr1rlr1rlr *1rlr1rlr1rlrlr1rlr1rlr*1rlr *1rlr1rlrlr1rlr*1rlrlrlr1rlr (MPN/100ml) PERMIT 1rlr1rlrlr1rlrlr'it:'krlrlc-1rlr *1rlr1rlrlr**'lrlrrl,:*1rlr ****** 1rlrlr'fr-11-11-1rlrrlrk'lrlt1rlr 126 349 MPN/

REQUIREMENT 1rlrlr-lrlt:1rlrlr*1rlrlrlr1rlr 1rlr'lrlr'lrlr1rlr1rlr1rlr*** ****** 'lrlrrl,:1rlrlr*1rlrl:"lrl:1rlr 30DAVGEO DAILYMX 100 ML 01/30 GR MLOC=1 72107 LAB ID: 40561 -k-k-Jrlt:**

0 01/01 CN Length of Longest pH SAMPLE rlrk'lrlt1rlr1rlr*1rlrlr1rlr 1rlr1rlr1rlrlr1rlr1rlr'lrlr1rlr 1rlrlr*** 1rlr1rlr'lrlrrl,:1rlr1rlr*1rlr 1rlr1rlrlr1rlr*~*1rlr 0

~rlrk'lrlt1rlr**

MEASUREMENT "k'k'k1rlr1rlr**1rlr1rlr1rlr *1rlr**1rlr1rlr1rlr'lrlr1rlr 1rlrlrlrlrlrlrl1rlr1rlr*1rlr Excursion PERMIT 'lrlrrl,:*1rlrlr*1rlr1rlr1rlr *1rlr1rirlrlrlrlrlrl*1rlr ****** *1rlr1rlrlr1rlr*1rlr1rlr** 'irlrlrlr~rlrk'lrlt** 60 MIN-UT REQUIREMENT 'lrlrrl,:*1rlrlr*1rlr1rlr1rlr rlrk'lrlt1rlr1rlrlr1rlr*1rlr

            • *1rlr1rlrlr1rlr1rlrlr1rlr1rlr ~ 1 r l r* .,,.,,....1rlr INST MAX ES 01/01 CN MLOC=P 72108 LAB ID: 40561 SAMPLE 'lrlrrl,:*1rlrlr*'lrlrrl,:1rlr *'lrlrrl,:*1rlr1rlr1rlr*1rlr ****** ~*1rlr1rlr*1rlr ~*1rlr1rlrlr1rlr 0 01/01 CN

% of Time Exceeding MEASUREMENT 1rlr1rlrlr'lrlrlr*'lrlrrl,:1rlr *1rlrlr'lrlrrl,:1rlr1rlr*1rlr ****** 1rlr1rlr1rlrlr*1rlr1rlr*1rlr 1rl-fr'lrlr1rlrlr1rlr1rlr*1rlr 0

1rlr1rlr**

pH Limits PERMIT 1rlr1rlr*1rlrlr**1rlrlr1rlr 1rlr1rlr1rlr1rlr1rlrlr**1rlr 'lrlr'irlrlrlr'irlrlr,lrlrlnt'lrlr *rk'k'lrlt'lrlr'lrlrlrlrlt'lrl 1 PER-REQUIREMENT 'fr-11-11-1rlr-lrir'lrir**'**1rlr 1rlr~**1rlr** ******

  • '***'*********** ~******* INST MAX CENT 01/01 CN MLOC=P NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM

~ ----

Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Vice President, Columbia Fuel Operations EVALUATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR '- 803 GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY 647-3171 2019 12 19 KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT /

TYPED OR PRINTED THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING l ~ U R E OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS. , OFFICER OR AUTHORIZED AGENT CODE COMMENT AND EXPLANATION OF ANY VIOLATIONS ~Reference all attachments here~ MLOC=P - Allowable PH is 6.0 -9.0 On Nd'vember 13, 20 and 27 , the weekl y total residual chlori n( e TRC)s am pe I resul tstested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011. On November 13, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

inghouse Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA SC Department of Health & Environmental Direct tel: 803-647-1000 Control Direct fax: 803-695-3964 Bureau of Water e-mail: logsdocj@westinghouse.com ATTN: Compliance Assurance Division 2600 Bull Street Columbia, South Carolina 29201 Our ref: LTR-RAC-20-8 SC-DHEC NPDES DMR - December 2019 January 24, 2020 with 4 th Quarter 2019 Fluoride Report

Dear Sirs and Madams:

RE: NPDES Permit #SC0001848 The enclosed Discharge Monitoring Report is submitted to fulfill the NPDES summary reporting requirements. This monthly summary covers the monitoring period from December 1, 2019, through December 31, 2019. All received sample results were within NPDES permit limits.

On December 4, 18 and 27, the weekly total residual chlorine (TRC) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

On December 11, the monthly E. coli result tested below the POL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

Also find attached the 4 th Quarter 2019 Fluoride report, as required.

If you have any questions regarding the enclosed reports, please contact Ms. Cynthia Logsdon, Environment Health & Safety, at (803) 647-3171.

Sinc~erely,--

//k~ "~/:*~

/4\JEsTINGHOUSE ELECTRIC COMPANY Michael Annacone Vice President, Columbia Fuel Operations

© 2020 Westinghouse Electric Company LLC All Rights Reserved

NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 79 CM FINAL LIMITS PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD DMR VALID: 07/01/2014 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR I MO I DAY YEAR I MO I DAY NOTE: Read Instructions before completing this fonn.

LOCATION 5801 BLUFF RD FROM 2019 I 12 I 01 TO 2019 I 12 I 31 PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 00300 LAB ID: 40561 ***'lrlr********** *************** 01/07 GR Dissolved Oxygen 10.5 MLOC=1 00310 LAB ID: 10120 SA BOD-5 Day MEASU (20 Degrees C) _'~EF>C:>~T( *\REF>O~T MG/L MLOC=1 .MO).~G 'DAltY"M){:.

00400 LAB ID: 40561 pH 6.51 8.37 Standard Units . REPORT MLOC=P

  • 1Ns1: M1r:i .

1 00530 LAB ID: 40561 Total Suspended Solids (TSS)

MLOC=1 00610 LAB ID: 40561 Ammonia - Nitrogen Total as N ~erpRT .. **

MLOC=1 . M0\4~G **

00665 LABIO:32010 Phosphorous, Total 1.1 MLOC=1 50050 LAB ID: 40561 Flow in Conduit or Thru Treatment Plant MLOC=1 NAMErrlTLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE / 803 647-3171 2020 01 24 AMO BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENAL TIES FOR SUBMITTING 1-------T-Y_P_E_D_O_R_P_R_I_N_T_E_D_ _ _ _ _--1 FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR SIGNATURE OF PRINCIPAL AREA NUMBER YEAR MO DAY KNOWING VIOLATIONS. EXECUTIVE CODE OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P -Allowable PH is 6.0 -9.0 04/26/2017 PAGE OF 2

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS MONITORING PERIOD DMR VALID: 07/01/2014- 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this form.

FROM TO LOCATION 5801 BLUFF RD 2019 12 01 2019 12 31 PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 50060 LAB ID: 40561 SAMPLE 0 01/07 GR MEASUREMENT 0.03 0.10 Total Residual Chlorine MLOC=1 51040 LAB ID: 32571 0

E. Coli (MPN/100ml) 349' MLOC=1 .. DAILYMX 72107 LABID:40561 Length of Longest pH 0 Excursion ***************

.,.;;;.-~.~.;. ~~. *~**~~"~~.~***~

'. ~Ji-~i~*~~~::~~

60 MLOC=P INST MAX ES 72108 LAB ID: 40561

% of Time Exceeding 0 pH Limits MLOC=P NAME/TITLE PRINCIPAL EXECUTIVE OFFICER Michael Annacone TELEPHONE DATE Vice President, Columbia Fuel Operations 803 647-3171 2020 01 24 COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 On December 4, 18, and 27, the weekly total residual chlorine (TRC) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011. On December 11, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELECRTIC COMPANY LLC SC0001848 001 2 MAJOR ADDRESS 5801 BLUFF ROAD PERMIT NUMBER DISCHARGE NUMBER 79 CM Fl NAL LIM ITS HOPKINS, SC 29061-9121 MONITORING PERIOD DMR VALID: 04/01/2013 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY LOCATION 5801 BLUFF RD 2019 10 01 2019 12 31 NOTE: Read Instructions before completing this form.

FROM TO NO. SAMPLE PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION FREQUENCY EX TYPE OF ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 00951 LAB ID: 40561 Fluoride, Total 3.469 6.060 MLOC=1 NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE MichaelAnnacone EVALUATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR Vice President GATHERING THE lNFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY 803 2020 01 24 647-3171 Columbia Fuel Operations TYPED OR PRINTED KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE AREA NUMBER ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE CODE YEAR MO DAY POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS.

COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here)

The plant discharged daily during the 4th quarter 2019. Discharge effluents were sampled weekly, 13 days of the 92 days discharged.

03/04/2013 PAGE l OF l

@we inghouse Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA SC Department of Health & Environmental Direct tel: 803-647-1000 Control Direct fax: 803-695-3964 Bureau of Water e-mail: logsdocj@westinghouse.com ATTN: Compliance Assurance Division 2600 Bull Street Columbia, South Carolina 29201 Our ref: LTR-RAC-20-23 SC-DHEC NPDES DMR - January 2020 February 27, 2020

Dear Sirs and Madams:

RE: NPDES Permit #SC0001848 The enclosed Discharge Monitoring Report is submitted to fulfill the NPDES summary reporting requirements. This monthly summary covers the monitoring period from January 1, 2020, through January 31, 2020. All received sample results were within NPDES permit limits.

On January 2, 8, 15, and 29, the weekly total residual chlorine (TRC) sample results tested below the POL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

On January 8, the monthly E. coli result tested below the POL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

If you have any questions regarding the enclosed reports, please contact Ms. Cynthia Logsdon, Environment Health & Safety, at (803) 647-3171.

W STINGHOUSE ELECTRIC COMPANY Michael Annacone Vice President, Columbia Fuel Operations

© 2020 Westinghouse Electric Company LLC All Rights Reserved

NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 79 CM FINAL LIMITS PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD DMR VALID: 07/0l/2014-03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA FROM YEAR I MO I DAY TO YEAR I MO I DAY NOTE: Read Instructions before completing this fonn.

LOCATION 5801 BLUFF RD 2020 I 01 I 01 2020 I 01 I 31 PARAMETER FREQUENCY I><

NO. SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 00300 LAB ID: 40561 SAMPLE *************** *************** ****** *************** *************** 01/07 GR Dissolved Oxygen MEASUREMENT *************"k-k ****** 9.8

                              • *************** *************** 0 PERMIT *****"k+k***'k"k*** *************** ****** 1.0 *************** *************** MG/L 01/07 GR REQUIREMENT -k'k***-k'k******'ldc *****-Irle******** ******

MLOC=1 INST MIN *************** ***************

00310 LAB ID: 10120 SAMPLE *************** 01/07 GR BOD-5 Day MEASUREMENT 8.5 11.75 8.5 10.1

                              • 0 (20 Degrees C) PERMIT 30 60 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MOAVG DAILYMX 00400 LAB ID: 40561 SAMPLE *************** *************** ****** *************** 01/01 CN pH MEASUREMENT ****** 6.42 8.31
          • "k********* *************** **"kit***********

0 Standard Units PERMIT *************'klr *************** ****** REPORT *************** REPORT SU 01/01 CN REQUIREMENT ******

MLOC=P ***********'**'** *************** INST MIN *************** INST MAX 00530 LAB ID: 40561 SAMPLE *************** 01/07 24 Total Suspended MEASUREMENT 7.2 8.0 7.3 10.0

                              • 0 Solids (TSS) PERMIT 32 64 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MOAVG DAILYMX 00610 LAB ID: 40561 SAMPLE *************** 01/07 24 Ammonia - Nitrogen MEASUREMENT 9.3 12.0 9.5 12.2
                              • 0 Total as N PERMIT 50 100 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MOAVG DAILYMX 00665 LABID:32010 SAMPLE *************** *************** ****** *************** 01/30 24
            • 0.71 0.71 Phosphorous, Total MEASUREMENT *************** *************** *************** 0 PERMIT *************** *************** ****** *************** REPORT REPORT MG/L 01/30 24 REQUIREMENT ******

MLOC=1 *****'********** *************** *************** MOAVG DAILYMX 50050 LAB ID: 40561 SAMPLE *************** *************** ***************

01/01 CN 0.118 0.175 ********

Flow in Conduit or MEASUREMENT *************** *************** *************** ******** 0 Thru Treatment Plant MLOC=1 PERMIT REPORT REPORT MGD *************** ***********-k*** *************** ******** 01/01 CN REQUIREMENT MOAVG DAILYMX *************** **'k-k*********** *************** ********

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM

~

Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING -

THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE AMO BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE .... 803 647-3171 2020 02 27 SIGNIFICANT PEN.AL TIES FOR SUBMITTING TYPED OR PRINTED FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS. / SIGNATURE OF PRINCIPAL EXECUTIVE AREA CODE NUMBER YEAR MO DAY

/ OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 04/26/2017 PAGE OF 2

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS MONITORING PERIOD DMR VALID: 07/01/2014-03/3 l/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this fonn.

FROM TO LOCATION 5801 BLUFF RD 2020 01 01 2020 01 31 PARAMETER NO. FREQUENCY SAMPLE l><

QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 50060 LAB ID: 40561 SAMPLE *************** *************** ****** *************** 0 01/07 GR MEASUREMENT ****** *************** 0.19 0.96 Total Residual ***********-k-'k** ***************

Chlorine -Jrl:************* ****** *************** 0.5 1.0 MG/L PERMIT ***************

REQUIREMENT 'k'k************* ****** *************** MOAVG DAILYMX 01/07 GR MLOC=1 ***************

51040 LAB ID: 32571 SAMPLE *************-k-'k *************** ****** *************** 0 01/30 GR MEASUREMENT ****** 0 0 E. Coli -frlc************* *************** ***************

(MPN/100ml) ****** 126 349 MPN/

PERMIT 'lrl:************* *************** ***************

REQUIREMENT *1rlr-*** 100 ML 01/30 GR MLOC=1 *****'k"k******** 'k'k************* *************** 30DAVGEO DAILYMX 72107 LABID:40561 ****** 0 01/01 CN SAMPLE ***********-frlc** *************** ****** *************** **"k'k***********

Length of Longest pH MEASUREMENT ***************

0

                      • "k'k** *************** ***************

Excursion PERMIT *************** *************** ****** *************** *************** 60 MIN-UT REQUIREMENT *************** *************** ****** *************** *************** INST MAX ES 01/01 CN MLOC=P 72108 LABID:40561 SAMPLE *************** *************** ****** *************** *************** 0 01/01 CN

% of Time Exceeding MEASUREMENT *************** *************** ****** *************** *************** 0 pH Limits PERMIT *************"k'k *************** ****** *************** *************** 1 PER-REQUIREMENT ***********1/4k** *************** ****** *************** ***-k*********** INST MAX CENT 01/01 CN MLOC=P NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE

~

PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Vice President, Columbia Fuel Operations EVALUATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR TYPED OR PRINTED 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 PENAL TIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS. ,,

v~--

~ATlJRE OF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT f-803 AREA CODE 647-3171 NUMBER 2020 YEAR 02 MO 27 DAY COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 On Janua ~ 2, 8, 15, and 29, the weekly total residual chlorine (TRC ) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laborato~ by SM 4500-CL G-2011. On January 8, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA SC Department of Health & Environmental Direct tel: 803-647-1000 Control Direct fax: 803-695-3964 Bureau of Water e-mail: logsdocj@westinghouse.com ATTN: Compliance Assurance Division 2600 Bull Street Columbia, South Carolina 29201 Our ref: LTR-RAC-20-33 SC-DHEC NPDES DMR - February 2020 March 26, 2020

Dear Sirs and Madams:

RE: NPDES Permit #SC0001848 The enclosed Discharge Monitoring Report is submitted to fulfill the NPDES summary reporting requirements. This monthly summary covers the monitoring period from February 1, 2020, through February 29, 2020. All received sample results were within NPDES permit limits.

On February 5, 12, and 19, the weekly total residual chlorine (TRC) sample results tested below the POL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

On February 12, the monthly E. coli result tested below the POL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 8-2004.

If you have any questions regarding the enclosed reports, please contact Ms. Cynthia Logsdon, Environment Health & Safety, at (803) 647-3171.

Sincerely, /!If~ ;.,,,

WESTINGHOUSE ELECTRIC COMPANY Michael Annacone Vice President, Columbia Fuel Operations

© 2020 Westinghouse Electric Company LLCAII Rights Reserved

J..11..:)\_~ 1'.lt't..J'-'lJJ£.r Il'IUl,,.D. l Ul'-11 ,,'lJJ 1'.C.r Ul'- J ( 1../1\111\j NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 79 CM FINAL LIMITS PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD DMR VALID: 07/01/2014 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this form.

I I I I LOCATION 5801 BLUFF RD FROM 2020 I 02 I 01 TO 2020 I 02 I 29 l><

PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 00300 LAB ID: 40561 SAMPLE *************** *************** ****** *************** *************** 01/07 GR

            • 9.8 Dissolved Oxygen MEASUREMENT *************** *************** *************** *************** 0 PERMIT ***********1rlf:"k"'k *************** ****** 1.0 *************** *************** MG/l 01/07 GR REQUIREMENT ******

MLOC=1 *""************* *************** INST MIN *************** ***************

00310 LAB ID: 10120 SAMPLE ****"k"'k********* 01/07 24 10.6 15.6 9.5 13.5 BOD-5 Day MEASUREMENT *************** 0 (20 Degrees C) PERMIT 30 60 LBS/ *************** REPORT REPORT MG/l 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILY MX DAY *************** MOAVG DAILYMX 00400 LAB ID: 40561 SAMPLE *************** *************** ****** *************** 01/01 CN

            • 6.21 8.24 pH MEASUREMENT *************** *************** *************** 0 Standard Units PERMIT *************** *************** ****** REPORT *************** REPORT SU 01/01 CN REQUIREMENT ******

MLOC=P *************** *************** INST MIN *************** INST MAX 00530 LAB ID: 40561 SAMPLE *************** 01/07 24 7.1 8.3 6.6 8.9 Total Suspended MEASUREMENT *************** 0 Solids (TSS) PERMIT 32 64 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILY MX DAY *************** MOAVG DAILYMX 00610 LAB ID: 40561 SAMPLE *************** 01/07 24 17.9 26.7 16.4 23.1 Ammonia Nitrogen MEASUREMENT *************** 0 Total as N PERMIT 50 100 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MOAVG DAILYMX 00665 LABID:32010 SAMPLE *************** *************** ****** *************** 01/30 24

            • 1.2 1.2 Phosphorous, Total MEASUREMENT *************** *************** *************** 0 PERMIT ***********'Irk** *************** ****** *************** REPORT REPORT MG/L 01/30 24 REQUIREMENT ******

MLOC=1 *************** *************** *************"k"'k MOAVG DAILYMX 50050 LAB ID: 40561 SAMPLE *************** *************** *************** ********

01/01 CN Flow in Conduit or MEASUREMENT 0.121 0.180

                              • *************** *************** ******** 0 Thru Treatment Plant MLOC=1 PERMIT REPORT REPORT MGD *************** *************** *************** ******** 01/01 CN REQUIREMENT MOAVG DAILYMX *************** *************** *************** ********

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING TYPED OR PRINTED THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE AMO BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENAL TIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR r J~~.l~-4 ...

/Vf3NAT)!._RE OF PRl~IP/.'(L A'- kl 803 AREA 647-3171 NUMBER 2020 YEAR 03 MO 26 DAY KNOWING VIOLATIONS. EXECUTIVE CODE OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P -Allowable PH is 6.0 -9.0 04/26/2017 PAGE OF 2

PERMITTEE NAME/ADDRESS NATlONAL POLLUTANT DISCHARGE ELTMlNATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS MONITORING PERIOD DMR VAUD: 07/01/2014-03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this fom1.

FROM TO LOCATION 5801 BLUFF RD 2020 02 01 2020 02 29 PARAMETER NO. FREQUENCY SAMPLE l><

QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 50060 LABIO:40561 SAMPLE *************** *************** ****** *************** 0 0i/07 GR MEASUREMENT ****** *************** 0.02 0.06 Total Residual ***********--lrlr** ***************

Chlorine PERMIT *************** *************** ****** *************** 0.5 1.0 MG/L REQUIREMENT ****** *************** 01/07 GR MLOC=1 ***********--lrlr** *************** MOAVG DAILYMX 51040 LAB ID: 32571 SAMPLE *************** *************** ****** *************** 0 01/30 GR MEASUREMENT ****** 0 0 E. Coli *************** *************** ***************

(MPN/100ml) PERMIT *************** *************** ****** *************** 126 349 MPN/

REQUIREMENT *************** *************** ****** *************** 30DAVGEO DAILY MX 100 ML 01/30 GR MLOC=1 72107 LAB ID: 40561 ****** 0 01/0i CN SAMPLE *************** *************** ****** *************** ***************

Length of Longest pH MEASUREMENT 0

Excursion PERMIT *************** *************** ****** *************** *************** 60 MIN-UT REQUIREMENT *************** *************** ****** *************** *************** INST MAX ES 01/01 CN MLOC=P 72108 LABID:40561 SAMPLE *************** *************** ****** *************** *************** 0 0i/0i CN

% of Time Exceeding MEASUREMENT *************** *************** ****** *************** *************** 0 Limits PERMIT *************** *************** ****** *************** *************** 1 PER-REQUIREMENT *************** *************** ****** *************** *************** CENT 01/01 CN MLOC=P INST MAX NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Vice President, Columbia Fuel Operations TYPED OR PRINTED 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.

)11/4~ '*"* ~

v7 *- - \

~!~URE t>F PRINCIPAl EXECUTIVE OFFICER OR AUTHORIZED AGENT 803 AREA CODE 647-3171 NUMBER 2020 YEAR 03 MO 26 DAY COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH IS 6.0 -9.0 On February 5, 12, and 19, the weekly total residual chlorme (TRC) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011. On February 12, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E.coli is analyzed by Access Analytical according to SM 9223 B-2004.

@ Westinghouse Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA SC Department of Health & Environmental Direct tel: 803-647-1000 Control Direct fax: 803-695-3964 Bureau of Water e-mail: logsdocj@westinghouse.com ATTN: Compliance Assurance Division 2600 Bull Street Columbia, South Carolina 29201 Our ref: LTR-RAC-20-43 SC-DHEC NPDES DMR - March 2020 April 27, 2020 with 1st Quarter 2020 Fluoride Report

Dear Sirs and Madams:

RE: NPDES Permit #SC0001848 The enclosed Discharge Monitoring Report is submitted to fulfill the NPDES summary reporting requirements. This monthly summary covers the monitoring period from March 1, 2020, through March 31 , 2020. All received sample results were within NPDES permit limits.

On March 4 , 11 , and 25, the weekly total residual chlorine (TRC) sample results tested below the POL of 0.05 mg/I and were , therefore , reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

On March 11 , the monthly E. coli result tested below the POL of 1 MPN/100 ml and was, therefore, reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

The 1st Quarter 2020 Fluoride Report is also attached.

If you have any questions regarding the enclosed reports , please contact Ms. Cynthia Logsdon, Environment Health & Safety, at (803) 647-3171 .

~

W TINGHOUSE ELECTRIC COMPANY Michael Annacone Vice President, Columbia Fuel Operations

~ 2020 Westinghouse Electric Company LLC All Rights Reserved

1,11"""-,l'l"-,n 'UE. lO V l 'll tvn.u ,v ~...-vn. 1 r1Jlll1t\j SC0001848 001 1 MAJOR NAME WESTINGHOUSE ELECRIC COMPANY LLC 79 CM FINAL LIMITS ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMrT NUMBER DISCHARGE NUMBER MONITORING PERJOD DMR VALID: 07.0ln014-03/31/20 18 NOTE: Read lllSlruClions before oompleting this fonn.

FACI LITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR f MO I DAY YEAR I MO I DAY LOCATIOJ 5801 BLUFF RD FROM 2020 I 03 I 01 TO 2020 I 03 I 31 NO. FREQUENCY SAMPLE t>< ---

PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS MAXIMUM UNITS MAXIMUM UNITS M INIMUM AVERAGE AVERAGE

.~.........-

01/07 GR

~

00300 LAB ID: 40561 SAMPLE

........................ 9.9 0

MEASUREMENT Dissolved Oxygen PERMIT

.......... ................. 1.0

. *****o1:****-"'***

---****11,.u,lr"TII.~

MG/L 01/07 GR REQULREMENT ~

INST MIN MLOC=1 00310 800-5 Day LAB ID : 10120 SAMPLE MEASUREMENT 10.4 14.0

12. 1 16.5 0

0 1/07 24 (20 Degrees C) PERMIT 30 60 LBS/

DAY ............... REPORT MOAVG REPORT DAIL Y MX MG/L 01/07 24 MLOC=1 00400 LAB ID: 40561 REQUIREMENT SAMPLE ----

MOAVG D AILYMX

. . . . . . .. . . . . . .:NJ

-- 6.02 **********-****

..... ******* 8 .29 0

01/01 CN

.............-... -~ .. ********-

pH MEASUREMENT Standard Units PERMIT ...................

                • - *~**II Ill 11::lt **- REPORT

...... REPORT SU 01/01 CN

lt1IIH_ -

REQUIREMENT INST MIN I NST MAX MLOC=P 00530 LAB ID: 4 0561

-- SAMPLE MEASUREMENT 8 9. 5 .............. 9 12 0

01/07 24 Total S uspended Solids (TSS) P ERMIT 32 64 LBS/ ........

..,.. REPORT REPORT MG/L 01/07 24 DAY MOAVG DAIL YMX MLOC=1 00610 LAB ID: 40561 REQUIREMENT SAMPLE MOAVG 17.3 DAILY MX 20.5

........ 20.1 23.4 01/07 24 Ammonia - Nitrogen MEASUREMENT 0

_............. MG/ L 01/07 24 Total as N PERMIT REQUIREMENT MOAVG 50 DAILYMX 100 LBS/

DAY ................ REPORT MOAVG REPORT DAILY MX MLOC=1

- 24

,............... . .- - 1 1 - 01/30 00665 LAB ID: 32010 SAMPLE

..................... ................. 1.3 1.3 0

Phosphorous , T otal MLOC=1 MEASUREMENT PERMIT REQUIREMENT

.............,.,.- -- .......... REPORT MOAVG REPORT DAILYMX MG/L 01/ 30 24

........,..._ 01/01 CN 50050 LAB ID: 40561 F low in Conduit or SAMPLE MEASUREMENT 0 .106 0.181 _.....,.,. ****a**-** .................... ............ 0 T hru Treatment P lant MLOC=1 PERMIT REPORT REPORT MGD ............... ................... ...........

........... ............ 01/01 CN REQUIREMENT MOAVG DAILY MX -.u,*************  :*::!I NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND All. ATTACHMENlS WERE PREPARED UNOE~ IK'r' DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM TELEPHONE DATE Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER ANO EVALUATE

Ja---

THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM. OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING THE INFORMATION, TI-iE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNO\M.EDGE 803 647-3171 2020 04 27 AMO BELIEF, TRUE. ACCURATE, AND COMPLETE. I AM AWARE THAT TI-iERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION. INCLUDING THE POSSIBILITY OF FINE ANO IMPRISONMENT FOR ~ N ATURE OF PRINCIPAL AREA NUMBER YEAR MO DAY TYPED OR PRINTED KNOWING VIOLATIONS. EXECUTIVE CODE

/ OFFICER OR AUWORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference a" attachments here) MLOC=P - Allowable PH is 6.0 -9.0 04/26/2017 PAGE OF 2

PERMmEE 'AM E/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS MONITOR[NG PERIOD DMR VALID: 07/01/2014 - 03/31/2018 MO DAY YEAR MO DAY NOTE: Read Instructions before completing this fonn.

FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR TO FROM 2020 03 01 I 2020 03 31 LOCATION 5801 BLUFF RD I r><

NO. FREQUENCY SAMPLE PARAMETER QUALITY OR CONCENrRATION QU ANTIT Y OR LOADING E.X OF TYPE ANALYSI S A VERAGE MAXIMUM UNITS A VERAGE MAXIM U!-1 UNITS M INIM UM 50060 LAB ID: 4 0561 Total Residual SAMPLE MEASUREMENT

--*--n-

&&&AA*

l&AJ.J.ft:fLIIHt 0.11 0.45 0 01/07 GR Chlorine PERMIT REQUIREMENT . . . ...... .... ............... ...._ -......... . ............

,u, MOAVG 0.5 1.0 DAILYMX MG/L 01/07 GR

---*~ - .... --***"*-

MLOC=1 51040 LAB ID: 32571 SAMPLE MEASUREMENT ,........................,._ jl . . . . . . . . . . . . . . . . .

........,...,_...,...........,.... 0 0 0 01/30 GR E. Coli

...__ 126 349 MPN/

(MPN/100ml) PERMIT

.li:Aa44AAAAAA:IAA..

01/30 GR REQUI REMENT

                          • .. **********- *
  • 1t:IUU 6111:1:1111 1&**

30DAVGEO DAILYMX 100 ML M LOC=1 721 07 LAB ID: 40561 Length of Longest pH SAMPLE MEASUREMENT 111:IUllillill!l&l&,lo,i,t,*A:ltiHl

        • "*'u,*****-

......... 0 0 01/01 CN Excursion PERMIT REQUIREMENT

_.~......,.....

...............~-

-- 60 INST MAX MIN-UT ES 01/01 CN MLOC=P 72108 LAB 10: 40561

% of Time Exceeding SAMPLE MEASUREMENT

__.........,.,_.__... 0 0 01/01 CN

................... ................... ........ .._ ........ ...........,... ,.,. .......... PER-pH Limits MLOC=P PERMIT REQUIREMENT

........._ 1 INST MAX CENT 01/01 CN NAMEfTITl.E PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF IAW THAT TI-US DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM DATE TELEPHONE

~~

Mich ael A nnacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE Tl-IE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR Vice President, Columbia Fuel Operations PERSONS IM-iO MANAGE Tl-iE SYSTEM. OR Tl-iOSE PERSONS DIRECll.Y RESPONSIBLE FOR 803 647-3171 2020 04 27 GATI-iERING THE INFORMATION, Tl-iE ll'{FORMATION SUBMITTED IS. TO THE 'BEST OF MY KNCNVLEDGE AND BELIEF, TRUE. ACCURATE. AND COMPLETE. I AM AWAAE THAT IBERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION. INCLUDING S~~~'?= OF PRINCIPAL EXECUTNE AREA NUMBER YEAR MO DAY TYPED OR PRINTED CODE THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOIATIONS. FFICER OR AUTHORIZ ED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH IS 6.0 -9.0 On March 4 , 11, and 25, the weekly total residual chlonne (TRC) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011. On March 11, the monthly E coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E.. coli is analyzed by Access Analytical according to SM 9223 B-2004.

PERMIITEE NAi\ffJADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARG E MO lT ORJNG REPORT (DMR)

NAME WESTINGHOUSE ELECRTIC COMPANY LLC SC0001848 001 2 MAJOR PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS ADDRESS 5801 BLUFF ROAD HOPKINS, SC 29061-9121 MONITORING PERIOD DMR VALID: 04/01/2013 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY LOCATION 5801 BLUFF RD 2020 01 01 2020 03 31 NOTE: Read Instructions before completing this form.

FROM TO NO. SAM PLE tx QUANTllY OR LOADING QUALITY OR C ONCENTRATION FREQUENCY PARAMETER EX TYPE OF ANALYS IS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 00951 LAB ID: 40561 SAMPLE MEASUREMENT . ,.. 1 ********- --***** ..... 1.839 3.140 0 01/07 24 Fluoride, Total MLOC=1 PERMIT REQUIREMENT ..... ,.

REPORT MOAVG REPORT DAILY MAX MG/L 01/90 24 SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT NAME/flTLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACH:~ffimS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE wrrn A SYSTEM

.~~

DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE EVALUATE n!E INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR Michael Annacone PERSONS WHO MANAGE TIIESYSTEM. OR n!OSE PERSONS DJ:RECTLY RESPONSIBLE FOR Vice President GATHERING TIIE INFORMATION, TIIE INFORMATION SUBMITTED IS, TO TIIE BEST OF MY f-803 647-317 1 2020 04 27 Columb ia Fuel Operations TYPED OR PRINTED KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT lllERE s r c.::;OF PRINCIPAL EXECUTIVE A R tA NUMBER ARE SIGNIFICANT PENALTIES FOR SUBMJTTING FALSE INFORMATION. INCLUDING THE FICER OR AUTHORIZED AGENT CODE YEAR 1110 DAY POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS.

COMMENT ANO EXPI.ANATION OF ANY VIOLATIONS (R,fie e-rence. all ariochments here1 The plant discharged daily during the 1st quarter 2020. Discha rge efflue nt.<. were sampled wee kly, 13 days of the 91 days discharged.

03/04/2013 PAGE 1 OF 1

in house Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA SC Department of Health & Environmental Direct tel: 803-647-1000 Control Direct fax: 803-695-3964 Bureau of Water e-mail: logsdocj@westinghouse.com ATTN: Compliance Assurance Division 2600 Bull Street Columbia, South Carolina 29201 Our ref: LTR-RAC-20-50 SC-DHEC NPDES DMR - April 2020 May 26, 2020 with 2020 Annual Toxicity Report

Dear Sirs and Madams:

RE: NPDES Permit #SC0001848 The enclosed Discharge Monitoring Report is submitted to fulfill the NPDES summary reporting requirements. The 2020 Toxicity Report is also attached.

This monthly summary covers the monitoring period from April 1, 2020, through April 30, 2020.

All received sample results were within NPDES permit limits.

On April 8, the monthly E. coli result tested below the POL of 1 MPN/100 ml and was, therefore, reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

One excursion of the BOD requirement occurred the week of April 22. Per GEL Laboratories via email correspondence on April 28:

"Results for this analysis have been compromised due to an isolated failure of the Deionized Water System used in the analytical processes. Use of the data may not reflect the true concentrations normally experienced in the sample. GEL is purchasing DI water for this lab until we can rectify the issue. Based on the LCS results, this data should not be used for regulatory reporting. Results are biased low."

Therefore, the weekly BOD result for April 22 was not included in the daily average or daily maximum reported, and one excursion was marked on the DMR. The issue was entered into the Westinghouse Corrective Action Program #2020-5328.

On April 29, Westinghouse notified Sonya Johnson and Lucas Berresford of the following river discharge piping maintenance issue. Notification is included in this DMR as required per Part II Section L.6 of NPDES Permit #SC0001848:

At approximately 3:35 pm on 4/28/20, Environment, Health and Safety (EH&S) personnel were informed of a leak in the treated wastewater discharge line from the Westinghouse plant to the Congaree River. Maintenance activities to repair a culvert on the dirt road, about a mile from the river, inadvertently impacted the line, and the leak was discovered right away. River discharges were stopped and locked out until maintenance repairs were completed the same day. The issue was entered into the Westinghouse Corrective Action Program# 2020-5267.

© 2020 Westinghouse Electric Company LLC All Rights Reserved

Page 2 of 2 Our ref: LTR-RAC-20-50 May 26, 2020 On April 30, the weekly total residual chlorine (TRC) sample result tested below the PQL of 0.05 mg/I and was, therefore, reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

If you have any questions regarding the enclosed reports, please contact Ms. Cynthia Logsdon, Environment Health & Safety, at (803) 647-3171.

Sincerely, WESTINGHOUSE ELECTRIC COMPANY Michael Annacone Vice President, Columbia Fuel Operations

Ul.:,'L,flft.l'-\JJ:'. !VlVl~llVl'Ul~\J .l'-J:'.CV.l'-1 (UlVlltj NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 79 CM FINAL LIMITS PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD DMR VALID: 07/01/2014 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR I MO I DAY YEAR I MO I DAY NOTE: Read Instmctions before completing this fonn.

-x I I LOCATION 5801 BLUFF RD FROM 2020 I 04 I 01 TO 2020 04 30 PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 00300 LAB ID: ---

40561 SAMPLE * ."*********'k'k'k'k

. *************** ****** *************** *************** 01/07 GR

            • 7.7 Dissolved Oxygen MEASUREMENT *************** *************** *************** *************** 0 PERMIT ***********-Jrlr** *************** ****** 1.0 **'k'k*********** *************** MG/L 01/07 GR REQUIREMENT kk***********'lrlt: ******

MLOC=1 *************** INST MIN *************** ***************

00310 LAB ID: 10120 SAMPLE *************** 01/07 24 10.1 20.5 14.6 23.2 BOD-5 Day MEASUREMENT *************** 1 (20 Degrees C) PERMIT 30 60 LBS/ ****'k'k********* REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILYMX DAY *************** MOAVG DAILYMX 00400 LAB ID: 40561 SAMPLE 1rlc***********1rlr *************** ****** *************** 01/01 CN

            • 6.3 7.9 pH MEASUREMENT ***********1rlc** *************** *************** 0 Standard Units PERMIT ***********1rlc"irl: *************** ****** REPORT *************** REPORT SU 01/01 CN
    • 1rlt:**

MLOC=P REQUIREMENT 'k'k********-ktt** *************** INST MIN *************** INST MAX 00530 LAB ID: 40561 SAMPLE *************** 01/07 24 5 10 9 13 Total Suspended MEASUREMENT *************** 0 Solids (TSS) PERMIT 32 64 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MOAVG DAILYMX 00610 LAB ID: 40561 SAMPLE *************** 01/07 24 17.1 22.8 25.4 48.8 Ammonia - Nitrogen MEASUREMENT *************** 0 Total as N PERMIT 50 100 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MOAVG DAILYMX DAY *************** MOAVG DAILYMX 00665 LABID: 32010 SAMPLE ************** *************** ****** *************** 1.4 1.4 01/30 24 Phosphorous, T o ~ MEASUREMENT *****-lrlc******'k'k *************** *************** 0 PERMIT *****'k'k****'k'k1rlr *************** ****** *************** REPORT REPORT MG/L 01/30 24 REQUIREMENT *'~***"irl:******** ******

MLOC=1 *************** *************** MOAVG DAILYMX 50050 LAB ID: 40561 ***************

01/01 CN SAMPLE *************** *************** ********

Flow in Conduit or MEASUREMENT 0.097 0.140

                              • *************** *************** ******** 0 Thru Treatment Plant MLOC=1 PERMIT REPORT REPORT MGD ****"lrlr********* *************** *************** ******** 01/01 CN REQUIREMENT MOAVG DAILYMX ****1rlr********* *************** *************** ********

NAMEfflTLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO TYPED OR PRINTED MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE AMO BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENAL TIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS.

I!~~

" SIGNATURE OF PRINCIPAL EXECUTIVE 803 AREA CODE 647-3171 NUMBER 2020 YEAR 05 MO 26 DAY OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P -Allowable PH is 6.0 -9.0 BOD sample for week of April 22 failed quality control due to DI water issue at vendor laboratory. Per advisement of vendor lab, this data was not used for regulatory reporting.

04/26/2017 PAGE OF 2

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS MONITORING PERIOD DMR VALID: 07/01/2014-03/3 l/2018 FACILITY WESTINGHOUSE ELEC llC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this form.

FROM TO LOCATION 5801 BLUFF RD 2020 04 01 2020 04 30 Total Residual Chlorine PARAMETER 50060 LAB ID: 40561

x SAMPLE MEASUREMENT AVERAGE QUANTITY OR LOADING MAXIMUM UNITS MINIMUM
        • "k-k*********

QUALITY OR CONCENTRATION AVERAGE 0.07 MAXIMUM 0.10 UNITS MG/L NO.

EX 0

FREQUENCY OF ANALYSIS 01/07 SAMPLE TYPE GR PERMIT *************** *************** *************** 0.5 1.0 REQUIREMENT 'k-k************* *************** ****** ****"Irk********* 01/07 GR MLOC=1 MOAVG DAILYMX 51040 LAB ID: 32571 SAMPLE "k-k***********'k"k *************** ****** *************** 0 01/30 GR MEASUREMENT ****** 0 0 E. Coli "lrk***'k"k****"lrk'k'k *************** "k-k**'k'k*********

(MPN/100ml) PERMIT *************** *************** ****** *************** 126 349 MPN/

REQUIREMENT *************** *************** ****** *************** 100 ML 01/30 GR MLOC=1 30DAVGEO DAILYMX 72107 LAB ID: 40561 ****** 0 01/01 CN SAMPLE *************** *************** ****** *************** ***************

Length of Longest pH MEASUREMENT ***************

0 Excursion PERMIT *************** *************** ****** *************** **-lrli:*********** 60 MIN-UT REQUIREMENT 'k'k************* *************** ****** ****"k-k********* **'k'k*********** ES 01/01 CN MLOC=P INST MAX 72108 LAB ID: 40561 SAMPLE *************** *************** ****** *************** *************** 0 01/01 CN

% of Time Exceeding MEASUREMENT ***********"k-k** *************** ****** *************** *************** 0 pH Limits PERMIT *************** *************** ****** *************** *************** 1 PER-REQUIREMENT *************** *************** ****** ****"k-k********* *************** CENT 01/01 CN MLOC=P INST MAX NAME!TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE M~,..~ ... ---

PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Vice President, Columbia Fuel Operations 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 PENAL TIES FOR SUBMITTING FALSE INFORMATION, INCLUDING

~- 4;4~~ ;~HA,J-...!! 803 AREA 647-3171 2020 05 26 TYPED OR PRINTED SIGNATURE OF PRINCl'PAL EXECUTIVE NUMBER YEAR MO DAY THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS. OFFICER OR AUTHORIZED AGENT CODE COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 On April 30, the weekly total residual chlorine (TRC) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011. April 8, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E.coli is analyzed by Access Analytical according to SM 9223 B-2004. The plant discharged 29 of 30 days during April 2020.

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELECTRIC COMPANY LLC SC0001848 001 3 MAJOR PERMIT NUMBER DISCHARGE NUMBER ADDRESS 5801 BLUFF ROAD 79 CM FINAL LIMITS HOPKINS, SC 29061-9121 MONITORING PERIOD DMR VALID: 04/01/2013 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY LOCATION 5801 BLUFF RD NOTE: Read Instructions before completing this fonn.

FROM TO 2020 04 01 2021 03 31 X

PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS TCP3B LAB ID: 32576 SAMPLE *******1rli:****** *************** ****** ***********"k'k**

MEASUREMENT **-It************ *************** ****"k"lc "lrlc************* 11 11

% Effect Statre 7 Day 0 01NR GR Chr Ceriodaphnia PERMIT *******1rlc****** *************** ****"k'k ***********1rli:** REPORT REPORT PER- 01NR GR REQUIREMENT **-lrlr***'lrk****** "k'k************* ****** *************** CENT MLOC=1 MO AVG DAILY MAX SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENAL TY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael J. Annacone

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DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Vice President, Columbia Fuel Operations 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

/J-1,~0 ,,,,,,,,,_.

A-***m,A/j

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803 647-3171 2020 05 26 TYPED OR PRINTED KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE *sIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE OFFICER OR AUTHORIZED AGENT CODE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS.

COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here)

Chronic toxicity CTC=l.0% effluent 03/04/2013 PAGE 1 OF

3/4/2013 DMR Attachment for Chronic Multi-Concentration Whole Effluent Toxicity Test Results using Linear Interpolation South Carolina Department of Health and Environmental Control WESTINGHOUSE ELEC LLC/COLUMBIA Permit number SC0001848 Discharge number 0013 FINAL LIMITS 04/01/2013-03/31/2018 Parameter Code TCP38 MLOC=1 CTC=1.0% effluent Monitoring Period Year Month Year Month Day From 2020 4 TO 2021 3 31 Mortality Data Reproduction Data Group Group Date 4/19/20 G roup #Ad uIts # Dea d Average v*

anance Lab ID 32576 0 10 1 22.4 42.9 0.25 10 1 23.1 95.2 0.5 10 0 26.5 70.1 IC25= 2.3% 1 10 0 21.4 45.4 48-hr chronic LC 50= >25 % 8 9 1 2.9 27.9 25 10 5 0.0 0.0

%Survival Effect at CTC= 0%

% Reproduction Effect at CTC= 11%

Mortality Data Reproduction Data Group Group Date G roup #Ad uIt s # Dea d Average v*

anance Lab ID 0 0.25 0.5 IC25=  % 1 48-hr chronic LC 50= 8 25

%Survival Effect at CTC=

% Reproduction Effect at CTC=

Signature of Principal Executive Officer or Authorized Agent Name/Title of Principal Executive Officer (typed or printed) ~' ch(\ el f\lf\nC\t.OV\e. / Vi~e l>,es,Je.v\ij Co\vMb\a fvel DHEC 3880 (08/2005)

O~u~ons

@Westinghouse Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA SC Department of Health & Environmental Direct tel: 803-647-1000 Control Direct fax: 803-695-3964 Bureau of Water e-mail: logsdocj@westinghouse.com ATTN: Compliance Assurance Division 2600 Bull Street Columbia, South Carolina 29201 Our ref: LTR-RAC-20-55 SC-DHEC NPDES DMR - May 2020 June 25, 2020

Dear Sirs and Madams:

RE: NPDES Permit #SC0001848 The enclosed Discharge Monitoring Report is submitted to fulfill the NPDES summary reporting requirements. This monthly summary covers the monitoring period from May 1, 2020, through May 31, 2020. All received sample results were within NPDES permit limits.

On May 13, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was, therefore, reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

On May 13, Ammonia-N was sampled by Westinghouse according to standard method 4500-NH3-D (selective electrode method) and by PACE according to EPA method 350.1 (gas diffusion).

On May 20 and 27, the weekly total residual chlorine (TRC) sample result tested below the PQL of 0.05 mg/I and was, therefore, reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

As communicated to you on June 12, 2020, Westinghouse impacted an 8-inch PVC Contaminated Wastewater (CWW) pipe during implementation of NPDES construction permit IW021063 as part of our efforts to close the East Lagoon. This pipe transports emergency cooling water, cooling tower blowdown, dehumidification condensate, and laboratory and floor drain wastewaters to the Contaminated Sump for treatment. During the construction activities, an excavation (about 8' x 4' and 6' deep) was completed on June 10, and a metal plate was placed over the area. When the plate was removed the morning of June 12, about 50-100 gallons of water was identified in the excavated area. Sample results of the water were 5.35E-07 uCi/ml gross alpha and 5.68E-07 uCi/ml gross beta, as analyzed by our onsite Health Physics Laboratory, and 0.03 ppm U, as analyzed by our onsite Chemical Laboratory. These results are below our internal process control limits for discharge to the Congaree River. Inputs into the line were stopped, the water was pumped out of the excavated area and repairs were completed the same day. The issue was entered into our Corrective Action Program #2020-7135. Implementation of the construction permit was successfully completed and inspected by DHEC personnel on June 19.

© 2020 Westinghouse Electric Company LLC All Rights Reserved

Page 2 of2 Our ref: LTR-RAC-20-55 June 25, 2020 If you have any questions regarding the enclosed reports, please contact Ms. Cynthia Logsdon, Environment Health & Safety, at (803) 647-3171.

~

WESTINGHOUSE ELECTRIC COMPANY Michael Annacone Vice President, Columbia Fuel Operations

,LJJ..::,\....,Il.i"l..l\,.\.J.£, lYJ.Vl'"UJ.Vn.u,u n..c,cvn.J. (Ll1V11\.j NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 79 CM FINAL LIMITS PERMIT NUMBER DISCHARGE NUMBER MONITORJNGPERIOD DMR VALID: 07/0l/2014-03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA NOTE: Read Instructions before completing this form.

YEAR I MO I DAY YEAR I MO I DAY LOCATION 5801 BLUFF RD FROM 2020 I 05 I 01 TO 2020 I 05 I 31 PARAMETER NO. FREQUENCY SAMPLE lX QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAX1MUM UNITS 00300 LAB ID: 40561 SAMPLE *************** ,tnl;,tnl;,tnl;rrr,!;1rlr*** ****** ***'****'**rrrA'** ***~1nl:** 01/07 GR Dissolved Oxygen MEASUREMENT ,tnl;,tnl;,tnl:1rlrlr~** ****** 8.5 ***-1nl:***1nl:** ***1nl:1nl:********

                        • '*** 0 MLOC=1 00310 LABID: 10120 PERMIT REQUIREMENT
          • 'lrlrl:rk'k1rlr1rlr
  • 1nl:1nl:1nl:1nl:1nl:1nl:**
        • '********'*1nl: -

INST MIN 1.0 *~*1n1:1n1:**

  • ~1nl:1nl:~** MG/L 01/07 GR SAMPLE *************** 01/07 24 BOD-5 Day MEASUREMENT 10.8 15.6 13.2 19.7
      • '****'******** 0 (20 Degrees C) PERMIT 30 60 LBS/ **********-** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILYMX DAY *************** MOAVG DAILYMX 00400 pH LAB ID: 40561 SAMPLE MEASUREMENT
                        • '*1nl:

r.~***'***-**

w-lrl:'"lrlrlrl1rlr1rlr1rlr**

                    • '***1nl:

--- 6.5

    • '*********1nl:1nl:
                  • rrrA'**

8.0 0

01/01 CN Standard Units PERMIT *'*******'*****1nl: \ *~********** ****** REPORT *************** REPORT SU 01/01 CN REQUIREMENT ~****'*** *'*'****

MLOC=P *************** INST MIN ***'************ INST MAX 00530 LAB ID: 40561 SAMPLE *1nl:~1t1nl:1nl:** 01/07 24 Total Suspended MEASUREMENT 6 9 ***-1nl:*******

7 12 0

Solids (TSS) PERMIT 32 64 LBS/ *1nl:*~******* REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILYMX DAY ***********-* MOAVG DAILYMX 00610 LABID: 40561.32010 SAMPLE ***********-* 01/07 24 10 11.7 12 14.7 Ammonia - Nitrogen MEASUREMENT 1nl:********-1nl: 0 Total as N PERMIT 50 100 LBS/ ***********'**** REPORT REPORT MG/L 01/07 24 REQUIREMENT DAY 1nl:******rrrA"*1nl: MOAVG DAILYMX MLOC=1 00665 LABID:32010 Phosphorous, Total SAMPLE MEASUREMENT MO AVG

~***********

    • -**-**-1nl:

DAILYMX rrrA'**1nl:1rlr1rlr***

-~* **********-**

1.1 1.1 0

01/30 24 PERMIT *'"******'****'*** *************1nl: ****** *1nl:**-******* REPORT REPORT MG/L 01/30 24 REQUIREMENT ******w-lrl:'"lrlrlrl** ****** MOAVG MLOC=1 ************'*** *************** DAILYMX 50050 LAB ID: 40561 Flow in Conduit or SAMPLE 0.097 0.131

          • "klrlr*******

1nl:1nl:***"k1c-k1rlrlr,tnl;

      • '************ **********'***1nl: .............,. 01/01 CN MEASUREMENT ~******* *******1nl:1rlr1nl:** ******** 0 Thru Treatment Plant MLOC=1 .- PERMIT REPORT REPORT MGD ******1nl:*1nl:1rlr1nl: ~***1nl:1nl: ****'*w-lrl:'"lrlrlrl*** ******** 01/01 CN REQUIREMENT MO AVG DAILYMX ****'*********1nl: ***'*********'*** *************** ********

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE 803 647-3171 2020 06 25 TYPED OR PRINTED AMD BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE SIGNIFICANT PENAL TIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR 1/~-----

~ A T U R E OF PRINCIPAL AREA NUMBER YEAR MO DAY KNOWING VIOLATIONS. EXECUTIVE CODE C/ OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P -Allowable PH 1s 6.0 -9.0 On May 13, Ammonia-N was sampled by Westinghouse according to standard method 4500-NH3-D (selective electrode method) and by PACE according to EPA method 350.1 (gas diffusion).

04/26/2017 PAGE 1 OF 2

I, PERMTITEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORJNG REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS MONITORING PERIOD D.MR VALID: 07/01/2014- 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this form.

FROM TO LOCATION 5801 BLUFF RD 2020 05 01 2020 05 31 X

PARAMETER NO. FREQUENCY SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 50060 LAB ID: 40561 Total Residual SAMPLE MEASUREMENT 1rlrlr1rlr~-

1rlrlrlrlt:1rlrlr*1rlrlrlr1rlt:

  • 1rlr1rlrlrlr******1rlr 1rlr1rlr**
  • 1rlt:1rlt:1t
    • ~1rlrlrlrlt:**

1rlrlrlr1rlrlrlr1rlrlr1rlrlrlr 0.10 0.27 0 01/07 GR Chlorine MLOC=1 PERMIT REQUIREMENT 1rlrlrlrl<:1rlrlrlr1rlrlrlr1rlr 1rlrlrlrlt:~*1rlrlr1rlt:

1rlt:1rlt:1rlt:-lrlrirlrlrlrit**

      • 1rlr*

......... ***1rlrlr**1rlrlrlr***

  • 1rlt:1rlrlrlrlt:*1rlt:1rlt:1rlt:

MOAVG 0.5 1.0 DAILYMX MG/L 01/07 GR 51040 LAB ID: 32571 SAMPLE 1rlrlrlrlt:1rlt:1rlt:1rlt:1rlt:1rlt: *1rlrlrlr1rlt:1rlt:1rlt:1rlt:1rlt: ****** *1rlrlr1rlr**1rlrlrlrl<:**

0 0 01/30 GR MEASUREMENT *--* 0 E. Coli 1rlr1rlr*1rlr***1rlrlr1rlr 1rlrlrlrlrlrlrl1rlr1rlrlr1rlr 1rlr1rlr1rlrlrlr"1rlr1rlrlr-(MPN/100ml) ........* MPN/

PERMIT 1rlr1rlr*1rlr1rlr*1rlrlr1rlr 1rlrlrlrlrlrlrl1rlr1rlrlr1rlr 1rlr1rlr1rlrlr*1rlr1rlr*1rlr 126 349

  • 1ric-k**

REQUIREMENT 1rlr1rlr1rlrlr*1rlr1rlt:*1rlt: 1rlr1rlr1rlrlrlr1rlr1rlr*1rlr 1rlr1rlrlrlrlrll:1rlrlrlrl<:1rlr 30DAVGEO DAILYMX 100 ML 01/30 GR MLOC=1 72107 LAB ID: 40561 1rlrlr1rlr1rlr1rlr*1rlrlr1rlr '11-AJ.AJ.JtkAJ.AJ.Akl.*

......... **1rlr1rlrlr*1rlr1rlr*1rlr 1rlrlrlrlt:1rlrlr1rlt:1rlt:*1rlt:

0 01/01 CN SAMPLE Length of Longest pH MEASUREMENT 1rlrlr1rlr1rlt:~1rlt: 1rlrlr1t1rlr1rlr***1rlr** *~1rlrlrlr*1rlt: 1rlr1rlrlrlrlrlr1rlr1rlrlr1rlr 0

Excursion MLOC=P 72108 LAB ID: 40561 PERMIT REQUIREMENT SAMPLE 1rlrlr*1t1rlt:1rlr1rlr1rlr1rlr 1rlrlrlrlt:1rlrlr*1rlrlrlt:1rlt:

1rlrlrlrlt:1rlrlr*1rlrlrlt:1rlt:

1rlrlr1rlrlrlr1rlr1rlr1rlr**

  • 1rlrlrlrlrlt:1rlt:1rlrlrlr**

1rlt:*1rlt:*

  • 1rlr1rlrlr1rlr*1rlr1rlt:**

1rlrlr1rlrlrlrlt:*1rlt:1rlt:1rlt:

1t1rlr1rlrlrlrlrlt1rlrlrlrl<:*

  • 1rlrlr1rlrlr****1rlr**
  • 1rlrlrlrlt:1rlt:*1rlrlrlr1rlt:

1rlrlrlrlrlr***1rlrlr1rlrlr 60 INST MAX MIN-UT ES 0

01/01 01/01 CN CN MEASUREMENT ........* 1rlrlrlr1rlrlr1t1rlr1rlr*1r*

% of Time Exceeding 1rlrlrlrlt:1rlrlrlr1rlrlrlr1rlt: 1rlrlr1rlrlrlr1rlt:1rlrlrlr1rlt: 1r*1r**1t*1r**1r*1r**

0

........* PER-pH Limits PERMIT 1r*1r**1r***1r1r*1c1r* 1r**1rlrirlrlrlrir*1r* 1r'k1r*1r***1r*1r**1r* 1r*1r**1r'k1t1r*1r*1t1r* 1 REQUIREMENT ~1r1r*1crrJrlt1r* 1rirlrirlrlrlrk1r*1r**1r*

  • 1r*1r**

1r*1r*1r***1r*1r**1r* 1r*1rlrl.**'*1r*1r*1t1r*

INST MAX CENT 01/01 CN MLOC=P NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE

~--

PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITI-1 A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Vice President, Columbia Fuel Operations EVALUATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR -803 GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY 647-3171 2020 06 25 KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWAAE THAT TYPED OR PRINTED THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING ~~' OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS. .,, OR AUTHORIZED AGENT CODE COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 On May 20 and 27, the weekly total residual chlorine (TRC) sample results tested below the PQL of 0.05 mg/I and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011. May 13, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E.coli is analyzed by Access Analytical according to SM 9223 B-2004.

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELECRTIC COMPANY LLC SC0001848 001 2 MAJOR ADDRESS 5801 BLUFF ROAD PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS HOPKINS, SC 29061-9121 I I I I MONITORING PERIOD DMR VALID: 04/01/2013 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY LOCATION 5801 BLUFF RD 2020 04 01 2020 06 30 NOTE: Read Instructions before completing this form.

FROM I I I I I I I TO I

NO. SAMPLE t><

PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION FREQUENCY EX TYPE OF ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 00951 LAB ID: 40561 SAMPLE *************** *************** ****** *************** 2.631 3.320 MEASUREMENT *************** *************** ****** ***************

Fluoride, Total 0 01/07 24 PERMIT *************** *************** ****** *************** REPORT REPORT MG/L 01/90 24 REQUIREMENT *************** *************** ****** ***************

MLOC=1 MO AVG DAILY MAX SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT SAMPLE MEASUREMENT PERMIT REQUIREMENT NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Michael Annacone EVALUATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR Vice President GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY 803 2019 07 23 647-3171 Columbia Fuel Operations TYPED OR PRINTED KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING THE OFFICER OR AUTHORIZED AGENT CODE YEAR MO DAY POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS.

COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here)

The plant discharged 90 of 91 days during the 2nd quarter 2020. Discharge effluents were sampled weekly, 13 days of the 90 days discharged.

03/04/2013 PAGE 1 OF 1

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 79 CM FINAL LIMITS PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD DMR VALID: 07/01/2014 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA NOTE: Read Instructions before completing this form.

LOCATION 5801 BLUFF RD FROM YEAR 2020 I MO 07 I DAY 01 TO YEAR 2020 I MO 07 I DAY 31 I I I I PARAMETER NO. FREQUENCY SAMPLE 00300 LAB ID: -40561

[X SAMPLE AVERAGE QUANTITY OR LOADING MAXIMUM UNITS MINIMUM QUALITY OR CONCENTRATION AVERAGE MAXIMUM UNITS EX OF ANALYSIS 01/07 TYPE GR Dissolved Oxygen MEASUREMENT ****** 6.4

                              • *************** *************** *************** 0 PERMIT *************** *************** ****** 1.0 *************** *************** MG/L 01/07 GR REQUIREMENT ******

MLOC=1 *************** *************** INST MIN *************** ***************

00310 LAB ID: -10120 SAMPLE *************** 01/07 24 BOD - 5 Day MEASUREMENT 9.7 14.7 15.4 20.0

                              • 0 (20 Degrees C) PERMIT 30 60 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILY MX DAY *************** MO AVG DAILY MX 00400 LAB ID: -40561 SAMPLE *************** *************** ****** *************** 01/01 CN pH MEASUREMENT ****** 6.3 8.4
                              • *************** *************** 0 Standard Units PERMIT *************** *************** ****** REPORT *************** REPORT SU 01/01 CN REQUIREMENT ******

MLOC=P *************** *************** INST MIN *************** INST MAX 00530 LAB ID: -40561 SAMPLE *************** 01/07 24 Total Suspended MEASUREMENT 16 31 25 42

                              • 0 Solids (TSS) PERMIT 32 64 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILY MX DAY *************** MO AVG DAILY MX 00610 LAB ID: -40561 SAMPLE *************** 01/07 24 Ammonia - Nitrogen MEASUREMENT 6.7 9.4 10.9 12.8
                              • 0 Total as N PERMIT 50 100 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILY MX DAY *************** MO AVG DAILY MX 00665 LAB ID: -32010 SAMPLE *************** *************** ****** *************** 01/30 24 Phosphorous, Total MEASUREMENT ****** 1.2 1.2
                              • *************** *************** 0 PERMIT *************** *************** ****** *************** REPORT REPORT MG/L 01/30 24 REQUIREMENT ******

MLOC=1 *************** *************** *************** MO AVG DAILY MX 50050 LAB ID: -40561 01/01 CN SAMPLE 0.091 0.173 *************** *************** *************** ********

Flow in Conduit or MEASUREMENT *************** *************** *************** ******** 0 Thru Treatment Plant MLOC=1 PERMIT REPORT REPORT MGD *************** *************** *************** ******** 01/01 CN REQUIREMENT MO AVG DAILY MX *************** *************** *************** ********

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE AMD BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE 803 647-3171 2020 08 19 SIGNIFICANT PENALTIES FOR SUBMITTING TYPED OR PRINTED FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR SIGNATURE OF PRINCIPAL AREA NUMBER YEAR MO DAY KNOWING VIOLATIONS. EXECUTIVE CODE OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 04/26/2017 PAGE 1 OF 2

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS MONITORING PERIOD DMR VALID: 07/01/2014 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this form.

FROM TO LOCATION 5801 BLUFF RD 2020 07 01 2020 07 31 PARAMETER NO. FREQUENCY SAMPLE t><

QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 50060 LAB ID: -40561 SAMPLE *************** *************** ****** *************** 0 01/07 GR

            • 0.13 0.22 Total Residual MEASUREMENT *************** *************** ***************

Chlorine PERMIT *************** *************** ****** *************** 0.5 1.0 MG/L REQUIREMENT ****** *************** 01/07 GR MLOC=1 *************** *************** MO AVG DAILY MX 51040 LAB ID: -32571 SAMPLE *************** *************** ****** *************** 0 01/30 GR

            • 0 0 E. Coli MEASUREMENT *************** *************** ***************

(MPN/100ml) PERMIT *************** *************** ****** *************** 126 349 MPN/

REQUIREMENT ****** 100 ML 01/30 GR MLOC=1 *************** *************** *************** 30DAVGEO DAILY MX 72107 LAB ID: -40561 ****** 0 01/01 CN SAMPLE *************** *************** ****** *************** ***************

Length of Longest pH MEASUREMENT 0 Excursion PERMIT *************** *************** ****** *************** *************** 60 MIN-UT REQUIREMENT ****** ES 01/01 CN MLOC=P *************** *************** *************** *************** INST MAX 72108 LAB ID: -40561 SAMPLE *************** *************** ****** *************** *************** 0 01/01 CN

% of Time Exceeding MEASUREMENT *************** *************** ****** *************** *************** 0 pH Limits PERMIT *************** *************** ****** *************** *************** 1 PER-REQUIREMENT *************** *************** ****** *************** *************** INST MAX CENT 01/01 CN MLOC=P NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Vice President, Columbia Fuel Operations 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 803 647-3171 2020 08 19 KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT TYPED OR PRINTED THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS. OFFICER OR AUTHORIZED AGENT CODE COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 The plant discharged 27 of 31 days during July 2020. On July 9, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004. On July 15, the weekly total residual chlorine (TRC) sample result tested below the PQL of 0.05 mg/l and was therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011.

04/26/2017 PAGE 2 OF 2

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELECRIC COMPANY LLC SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 79 CM FINAL LIMITS PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD DMR VALID: 07/01/2014 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA NOTE: Read Instructions before completing this form.

LOCATION 5801 BLUFF RD FROM YEAR 2020 I MO 06 I DAY 01 TO YEAR 2020 I MO 06 I DAY 30 I I I I PARAMETER NO. FREQUENCY SAMPLE 00300 LAB ID: -40561

[X SAMPLE AVERAGE QUANTITY OR LOADING MAXIMUM UNITS MINIMUM QUALITY OR CONCENTRATION AVERAGE MAXIMUM UNITS EX OF ANALYSIS 01/07 TYPE GR Dissolved Oxygen MEASUREMENT ****** 6.3

                              • *************** *************** *************** 0 PERMIT *************** *************** ****** 1.0 *************** *************** MG/L 01/07 GR REQUIREMENT ******

MLOC=1 *************** *************** INST MIN *************** ***************

00310 LAB ID: -10120 SAMPLE *************** 01/07 24 BOD - 5 Day MEASUREMENT 12.8 16.6 16.1 23.6

                              • 0 (20 Degrees C) PERMIT 30 60 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILY MX DAY *************** MO AVG DAILY MX 00400 LAB ID: -40561 SAMPLE *************** *************** ****** *************** 01/01 CN pH MEASUREMENT ****** 6.2 8.7
                              • *************** *************** 0 Standard Units PERMIT *************** *************** ****** REPORT *************** REPORT SU 01/01 CN REQUIREMENT ******

MLOC=P *************** *************** INST MIN *************** INST MAX 00530 LAB ID: -40561 SAMPLE *************** 01/07 24 Total Suspended MEASUREMENT 9 13 12 20

                              • 0 Solids (TSS) PERMIT 32 64 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILY MX DAY *************** MO AVG DAILY MX 00610 LAB ID: -40561 SAMPLE *************** 01/07 24 Ammonia - Nitrogen MEASUREMENT 7.31 10.21 8.88 9.57
                              • 0 Total as N PERMIT 50 100 LBS/ *************** REPORT REPORT MG/L 01/07 24 MLOC=1 REQUIREMENT MO AVG DAILY MX DAY *************** MO AVG DAILY MX 00665 LAB ID: -32010 SAMPLE *************** *************** ****** *************** 01/30 24 Phosphorous, Total MEASUREMENT ****** 1.9 1.9
                              • *************** *************** 0 PERMIT *************** *************** ****** *************** REPORT REPORT MG/L 01/30 24 REQUIREMENT ******

MLOC=1 *************** *************** *************** MO AVG DAILY MX 50050 LAB ID: -40561 01/01 CN SAMPLE 0.102 0.162 *************** *************** *************** ********

Flow in Conduit or MEASUREMENT *************** *************** *************** ******** 0 Thru Treatment Plant MLOC=1 PERMIT REPORT REPORT MGD *************** *************** *************** ******** 01/01 CN REQUIREMENT MO AVG DAILY MX *************** *************** *************** ********

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND EVALUATE TELEPHONE DATE THE INFORMATION SUBMITTED. BASED ON MY INQUIRY OF THE PERSON OR PERSONS Vice President, Columbia Fuel Operations WHO MANAGE THE SYSTEM, OR THOSE PERSONS DIRECTLY RESPONSIBLE FOR GATHERING THE INFORMATION, THE INFORMATION SUBMITTED IS, TO THE BEST OF MY KNOWLEDGE AMD BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT THERE ARE 803 647-3171 2020 07 23 SIGNIFICANT PENALTIES FOR SUBMITTING TYPED OR PRINTED FALSE INFORMATION, INCLUDING THE POSSIBILITY OF FINE AND IMPRISONMENT FOR SIGNATURE OF PRINCIPAL AREA NUMBER YEAR MO DAY KNOWING VIOLATIONS. EXECUTIVE CODE OFFICER OR AUTHORIZED AGENT COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 04/26/2017 PAGE 1 OF 2

PERMITTEE NAME/ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)

DISCHARGE MONITORING REPORT (DMR)

NAME WESTINGHOUSE ELEC LLC/ COLUMBIA SC0001848 001 1 MAJOR ADDRESS 5801 BLUFF ROAD, HOPKINS, SC 29061-9121 PERMIT NUMBER DISCHARGE NUMBER 79 CM FINAL LIMITS MONITORING PERIOD DMR VALID: 07/01/2014 - 03/31/2018 FACILITY WESTINGHOUSE ELEC LLC /COLUMBIA YEAR MO DAY YEAR MO DAY NOTE: Read Instructions before completing this form.

FROM TO LOCATION 5801 BLUFF RD 2020 06 01 2020 06 30 PARAMETER NO. FREQUENCY SAMPLE t><

QUANTITY OR LOADING QUALITY OR CONCENTRATION EX OF TYPE ANALYSIS AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS 50060 LAB ID: -40561 SAMPLE *************** *************** ****** *************** 0 01/07 GR

            • 0.05 0.12 Total Residual MEASUREMENT *************** *************** ***************

Chlorine PERMIT *************** *************** ****** *************** 0.5 1.0 MG/L REQUIREMENT ****** *************** 01/07 GR MLOC=1 *************** *************** MO AVG DAILY MX 51040 LAB ID: -32571 SAMPLE *************** *************** ****** *************** 0 01/30 GR

            • 0 0 E. Coli MEASUREMENT *************** *************** ***************

(MPN/100ml) PERMIT *************** *************** ****** *************** 126 349 MPN/

REQUIREMENT ****** 100 ML 01/30 GR MLOC=1 *************** *************** *************** 30DAVGEO DAILY MX 72107 LAB ID: -40561 ****** 0 01/01 CN SAMPLE *************** *************** ****** *************** ***************

Length of Longest pH MEASUREMENT 0 Excursion PERMIT *************** *************** ****** *************** *************** 60 MIN-UT REQUIREMENT ****** ES 01/01 CN MLOC=P *************** *************** *************** *************** INST MAX 72108 LAB ID: -40561 SAMPLE *************** *************** ****** *************** *************** 0 01/01 CN

% of Time Exceeding MEASUREMENT *************** *************** ****** *************** *************** 0 pH Limits PERMIT *************** *************** ****** *************** *************** 1 PER-REQUIREMENT *************** *************** ****** *************** *************** INST MAX CENT 01/01 CN MLOC=P NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I CERTIFY UNDER PENALTY OF LAW THAT THIS DOCUMENT AND ALL ATTACHMENTS WERE PREPARED UNDER MY DIRECTION OR SUPERVISION IN ACCORDANCE WITH A SYSTEM Michael Annacone DESIGNED TO ASSURE THAT QUALIFIED PERSONNEL PROPERLY GATHER AND TELEPHONE DATE Vice President, Columbia Fuel Operations 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 803 647-3171 2020 07 23 KNOWLEDGE AND BELIEF, TRUE, ACCURATE, AND COMPLETE. I AM AWARE THAT TYPED OR PRINTED THERE ARE SIGNIFICANT PENALTIES FOR SUBMITTING FALSE INFORMATION, INCLUDING SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY THE POSSIBILITY OF FINE AND IMPRISONMENT FOR KNOWING VIOLATIONS. OFFICER OR AUTHORIZED AGENT CODE COMMENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) MLOC=P - Allowable PH is 6.0 -9.0 On June 3 and 17, the weekly total residual chlorine (TRC) sample results tested below the PQL of 0.05 mg/l and were therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011. June 12, the monthly E. coli result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

04/26/2017 PAGE 2 OF 2

DISCHARGE MONITORING REPORT (DMR)

Facility Name: Westinghouse Electric Company LLC/Columbia Fuel Permit Number: SC0001848 v2.1 Fabrication Facility Permittee Name: WESTINGHOUSE ELECTRIC COMPANY LLC DMR Period: 9/1/2020 - 9/30/2020 Limit Set: 0011 No Discharge:

QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX. OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS Dissolved Oxygen SAMPLE 0 Weekly Grab (00300) ***** ***** 7.1 ***** *****

MEASUREMENT Effluent Gross (1) mg/L 1.0 PERMIT ***** ***** ***** ***** Grab Lab ID: 40561 Instantaneous Weekly REQUIREMENT Minimum BOD - 5 DAY (20 0 24-Hr DEGREES C) (00310) SAMPLE Weekly Composit 16.2 24.5 ***** 20.8 27.4 Effluent Gross (1) MEASUREMENT e lbs/day mg/L Lab ID: 10120 24-Hr 30 PERMIT 60 ***** ***** ***** Composit Monthly Weekly REQUIREMENT Daily Maximum Monthly Average Daily Maximum e Average pH (00400) 0 Continuo SAMPLE Daily See Comments (P) ***** ***** 6.3 ***** 8.3 us MEASUREMENT SU Lab ID: 40561 ***** ***** Continuo PERMIT ***** ***** *****

Instantaneous Instantaneous Daily us REQUIREMENT Minimum Maximum Total Suspended Solids 0 24-Hr (00530) SAMPLE Weekly Composit 13 20 ***** 17 22 Effluent Gross (1) MEASUREMENT e lbs/day mg/L Lab ID: 40561 24-Hr 32 PERMIT 64 ***** ***** ***** Composit Monthly Weekly REQUIREMENT Daily Maximum Monthly Average Daily Maximum e Average Ammonia Nitrogen (as 0 24-Hr N) (00610) SAMPLE lbs/day mg/L Weekly Composit 2.41 3.44 ***** 3.17 4.10 Effluent Gross (1) MEASUREMENT e NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I Certify under penalty of law that this document and all attachments were TELEPHONE DATE 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 SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY penalties for submitting false information, including the possibility of fine and OFFICER OR AUTHORIZED AGENT CODE TYPED OR PRINTED imprisonment for knowing violations.

Permit Number: SC0001848 v2.1 Generated: 11/20/2020 8:25 AM Page 1 of 3

DISCHARGE MONITORING REPORT (DMR)

Facility Name: Westinghouse Electric Company LLC/Columbia Fuel Permit Number: SC0001848 v2.1 Fabrication Facility Permittee Name: WESTINGHOUSE ELECTRIC COMPANY LLC DMR Period: 9/1/2020 - 9/30/2020 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX. OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS 24-Hr 50 Lab ID: 40561 PERMIT 100 ***** ***** ***** Composit Monthly Weekly REQUIREMENT Daily Maximum Monthly Average Daily Maximum e Average Total Phosphorus (as 0 24-Hr P) (00665) SAMPLE Monthly Composit

          • ***** ***** 0.58 0.58 Effluent Gross (1) MEASUREMENT e mg/L Lab ID: 32010 24-Hr PERMIT ***** ***** ***** ***** ***** Composit Monthly REQUIREMENT Monthly Average Daily Maximum e Flow (50050) 0 Continuo SAMPLE Daily Effluent Gross (1) 0.092 0.169 ***** ***** ***** us MEASUREMENT MGD Lab ID: 40561 ***** Continuo PERMIT ***** ***** ***** *****

Monthly Daily us REQUIREMENT Daily Maximum Average Total Residual SAMPLE 0 Weekly Grab Chlorine (50060) ***** ***** ***** 0.07 0.14 MEASUREMENT Effluent Gross (1) mg/L PERMIT ***** ***** ***** 0.5 1.0 Grab Lab ID: 40561 Weekly REQUIREMENT Monthly Average Daily Maximum E. COLI (MPN/100ML) SAMPLE 0 Monthly Grab (51040) ***** ***** ***** 0 0 MEASUREMENT Effluent Gross (1) MPN/100mL 126 PERMIT ***** ***** ***** 349 Grab Lab ID: 32571 30 Day Average Monthly REQUIREMENT Daily Maximum Geometric LENGTH OF LONGEST PH 0 Continuo SAMPLE min Daily EXCURSION (72107) ***** ***** ***** ***** 0 us MEASUREMENT NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I Certify under penalty of law that this document and all attachments were TELEPHONE DATE 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 SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY penalties for submitting false information, including the possibility of fine and OFFICER OR AUTHORIZED AGENT CODE TYPED OR PRINTED imprisonment for knowing violations.

Permit Number: SC0001848 v2.1 Generated: 11/20/2020 8:25 AM Page 2 of 3

DISCHARGE MONITORING REPORT (DMR)

Facility Name: Westinghouse Electric Company LLC/Columbia Fuel Permit Number: SC0001848 v2.1 Fabrication Facility Permittee Name: WESTINGHOUSE ELECTRIC COMPANY LLC DMR Period: 9/1/2020 - 9/30/2020 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX. OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS See Comments (P) 60 Continuo PERMIT ***** ***** ***** *****

Instantaneous Daily us Lab ID: 40561 REQUIREMENT Maximum

% OF TIME EXCEEDING PH 0 Continuo SAMPLE Daily LIMITS (72108) ***** ***** ***** ***** 0 us MEASUREMENT See Comments (P) 1 Continuo Lab ID: 40561 PERMIT ***** ***** ***** *****

Instantaneous Daily us REQUIREMENT Maximum DMR Instructions: MLOC=P - ALLOWABLE PH IS 6.0 - 9.0.

DMR Comments: Revision 11/18/2020: Ammonia data updated to include September 30 samples. TSS average data updated to include September 30 samples. These results were not included during original submission due to lab report error, discovered during preparation of October 2020 DMR.

The plant discharged 29 of 30 days during September 2020. On September 2, the weekly total residual chlorine (TRC) sample result tested below the PQL of 0.05 mg/l and was therefore reported as zero. Chlorine is analyzed by the Westinghouse onsite chemical laboratory by SM 4500-CL G-2011. On September 10, the monthly e. coli sample result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

At approximately 02:00 on 9/27/20, a pump seal in our wastewater treatment area failed, spraying a fine mist onto the rocks just outside the containment pad. The estimated quantity was less than a pint of Conversion area wastewater consisting of ammonium fluoride and uranium. The uranium concentration in the tank was 90.62 ppm U. An approximate 2 foot by 2 foot area outside the containment dike was cleaned up. No solution impacted the ground or storm drains. The issue was entered into our Corrective Action Program # 2020-10832 and reported to the Midlands EQC on 9/28/20.

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I Certify under penalty of law that this document and all attachments were TELEPHONE DATE 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 SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY penalties for submitting false information, including the possibility of fine and OFFICER OR AUTHORIZED AGENT CODE TYPED OR PRINTED imprisonment for knowing violations.

Permit Number: SC0001848 v2.1 Generated: 11/20/2020 8:25 AM Page 3 of 3

DISCHARGE MONITORING REPORT (DMR)

Facility Name: Westinghouse Electric Company LLC/Columbia Fuel Permit Number: SC0001848 v2.1 Fabrication Facility Permittee Name: WESTINGHOUSE ELECTRIC COMPANY LLC DMR Period: 9/1/2020 - 9/30/2020 At 04:42 on 10/06/2020, a sample valve was found open in our ammonia distillation process, overflowing still bottoms into the distillation building, floor trench, and nearby storm drain. A routine process sample had been pulled at 04:00. The estimated quantity spilled outside of the building was 350 gallons of water and lime, containing 27 ppm ammonia, <10 ppm fluoride, and 0.09 ppm uranium, with a pH of 11.98. This spill did not contain a reportable quantity (RQ) of any chemical. No material from the spill was discharged from the site. Lime settled in the storm water ditch system at A Valve, about 800 feet from the sites single discharge point for storm water, C Valve. The impacted area was less than 10 x 4 and the settled material was removed by portable pump with collection in 250-gallon plastic totes for additional sampling and proper disposal. Sample results were provided to the Midlands EQC.

Aquatic life in the ditch continues to be active. The issue was entered into our Corrective Action Program as # 2020-11160.

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I Certify under penalty of law that this document and all attachments were TELEPHONE DATE 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 SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY penalties for submitting false information, including the possibility of fine and OFFICER OR AUTHORIZED AGENT CODE TYPED OR PRINTED imprisonment for knowing violations.

Permit Number: SC0001848 v2.1 Generated: 11/20/2020 8:25 AM Page 4 of 3

DISCHARGE MONITORING REPORT (DMR)

Facility Name: Westinghouse Electric Company LLC/Columbia Fuel Permit Number: SC0001848 v2.1 Fabrication Facility Permittee Name: WESTINGHOUSE ELECTRIC COMPANY LLC DMR Period: 10/1/2020 - 10/31/2020 Limit Set: 0011 No Discharge:

QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX. OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS Dissolved Oxygen SAMPLE 0 Weekly Grab (00300) ***** ***** 5.8 ***** *****

MEASUREMENT Effluent Gross (1) mg/L 1.0 PERMIT ***** ***** ***** ***** Grab Lab ID: 40561 Instantaneous Weekly REQUIREMENT Minimum BOD - 5 DAY (20 0 24-Hr DEGREES C) (00310) SAMPLE Weekly Composit 10.2 17.0 ***** 12.5 19.8 Effluent Gross (1) MEASUREMENT e lbs/day mg/L Lab ID: 10120 24-Hr 30 PERMIT 60 ***** ***** ***** Composit Monthly Weekly REQUIREMENT Daily Maximum Monthly Average Daily Maximum e Average pH (00400) 0 Continuo SAMPLE Daily See Comments (P) ***** ***** 6.2 ***** 8.3 us MEASUREMENT SU Lab ID: 40561 ***** ***** Continuo PERMIT ***** ***** *****

Instantaneous Instantaneous Daily us REQUIREMENT Minimum Maximum Total Suspended Solids 0 24-Hr (00530) SAMPLE Weekly Composit 18 22 ***** 22 27 Effluent Gross (1) MEASUREMENT e lbs/day mg/L Lab ID: 40561 24-Hr 32 PERMIT 64 ***** ***** ***** Composit Monthly Weekly REQUIREMENT Daily Maximum Monthly Average Daily Maximum e Average Ammonia Nitrogen (as 0 24-Hr N) (00610) SAMPLE lbs/day mg/L Weekly Composit 5.43 6.02 ***** 6.69 7.59 Effluent Gross (1) MEASUREMENT e NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I Certify under penalty of law that this document and all attachments were TELEPHONE DATE 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 SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY penalties for submitting false information, including the possibility of fine and OFFICER OR AUTHORIZED AGENT CODE TYPED OR PRINTED imprisonment for knowing violations.

Permit Number: SC0001848 v2.1 Generated: 11/20/2020 8:24 AM Page 1 of 2

DISCHARGE MONITORING REPORT (DMR)

Facility Name: Westinghouse Electric Company LLC/Columbia Fuel Permit Number: SC0001848 v2.1 Fabrication Facility Permittee Name: WESTINGHOUSE ELECTRIC COMPANY LLC DMR Period: 10/1/2020 - 10/31/2020 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX. OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS 24-Hr 50 Lab ID: 40561 PERMIT 100 ***** ***** ***** Composit Monthly Weekly REQUIREMENT Daily Maximum Monthly Average Daily Maximum e Average Total Phosphorus (as 0 24-Hr P) (00665) SAMPLE Monthly Composit

          • ***** ***** 1.4 1.4 Effluent Gross (1) MEASUREMENT e mg/L Lab ID: 32010 24-Hr PERMIT ***** ***** ***** ***** ***** Composit Monthly REQUIREMENT Monthly Average Daily Maximum e Flow (50050) 0 Continuo SAMPLE Daily Effluent Gross (1) 0.096 0.115 ***** ***** ***** us MEASUREMENT MGD Lab ID: 40561 ***** Continuo PERMIT ***** ***** ***** *****

Monthly Daily us REQUIREMENT Daily Maximum Average Total Residual SAMPLE 0 Weekly Grab Chlorine (50060) ***** ***** ***** 0.12 0.19 MEASUREMENT Effluent Gross (1) mg/L PERMIT ***** ***** ***** 0.5 1.0 Grab Lab ID: 40561 Weekly REQUIREMENT Monthly Average Daily Maximum E. COLI (MPN/100ML) SAMPLE 0 Monthly Grab (51040) ***** ***** ***** 0 0 MEASUREMENT Effluent Gross (1) MPN/100mL 126 PERMIT ***** ***** ***** 349 Grab Lab ID: 32571 30 Day Average Monthly REQUIREMENT Daily Maximum Geometric LENGTH OF LONGEST PH 0 Continuo SAMPLE min Daily EXCURSION (72107) ***** ***** ***** ***** 0 us MEASUREMENT NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I Certify under penalty of law that this document and all attachments were TELEPHONE DATE 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 SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY penalties for submitting false information, including the possibility of fine and OFFICER OR AUTHORIZED AGENT CODE TYPED OR PRINTED imprisonment for knowing violations.

Permit Number: SC0001848 v2.1 Generated: 11/20/2020 8:24 AM Page 2 of 2

DISCHARGE MONITORING REPORT (DMR)

Facility Name: Westinghouse Electric Company LLC/Columbia Fuel Permit Number: SC0001848 v2.1 Fabrication Facility Permittee Name: WESTINGHOUSE ELECTRIC COMPANY LLC DMR Period: 10/1/2020 - 10/31/2020 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX. OF TYPE AVERAGE MAXIMUM UNITS MINIMUM AVERAGE MAXIMUM UNITS ANALYSIS See Comments (P) 60 Continuo PERMIT ***** ***** ***** *****

Instantaneous Daily us Lab ID: 40561 REQUIREMENT Maximum

% OF TIME EXCEEDING PH 0 Continuo SAMPLE Daily LIMITS (72108) ***** ***** ***** ***** 0 us MEASUREMENT See Comments (P) 1 Continuo Lab ID: 40561 PERMIT ***** ***** ***** *****

Instantaneous Daily us REQUIREMENT Maximum DMR Instructions: MLOC=P - ALLOWABLE PH IS 6.0 - 9.0.

DMR Comments: The plant discharged 28 of 31 days during October 2020.

On October 14, the monthly e. coli sample result tested below the PQL of 1 MPN/100 ml and was therefore reported as zero. E. coli is analyzed by Access Analytical according to SM 9223 B-2004.

NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I Certify under penalty of law that this document and all attachments were TELEPHONE DATE 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 SIGNATURE OF PRINCIPAL EXECUTIVE AREA NUMBER YEAR MO DAY penalties for submitting false information, including the possibility of fine and OFFICER OR AUTHORIZED AGENT CODE TYPED OR PRINTED imprisonment for knowing violations.

Permit Number: SC0001848 v2.1 Generated: 11/20/2020 8:24 AM Page 3 of 2

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