3F0220-04, Reporting Related to the National Pollutant Discharge - Elimination System (NPDES) Permit Id FL0A00004-001-IW1S

Reporting Related to the National Pollutant Discharge - Elimination System (NPDES) Permit Id FL0A00004-001-IW1S

ML20055E207
Person / Time
Site:	Crystal River
Issue date:	02/24/2020
From:	Wilson I Duke Energy Florida
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
3F0220-04
Download: ML20055E207 (45)

Text

J_-, DUKE Crystal River Nuclear Plant 15760 W. Power Line Street

~ ENERGYe Crystal River, FL 34428 Dockets 50-302, 72-1035 Operating License No. DPR-72 Environmental Protection Plan (Non-Radiological)

Technical Specifications Appendix B - Part II February 24, 2020 3F0220-04 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-001

Subject:

Crystal River Unit 3 - Reporting Related to the National Pollutant Discharge Elimination System (NPDES) Permit ID# FL0A00004-001-IW1 S

Dear Sir:

Duke Energy Florida, LLC., hereby provides a copy to the Nuclear Regulatory Commission (NRC) of a the NPDES Permit authorizing wastewater discharge from Crystal River Unit 3 (CR-3).

Previously to this new permit, CR-3 was authorized to discharge wastewater under NPDES Permit ID# FL0000159-016-IW1S, which was a combined permit that included Crystal River Fossil Units 1 and 2 along with Citrus Combined Cycle Units. CR-3 is now under its own NPDES Permit ID#

FL0A00004-001-IW1 S.

This submittal is required by the CR-3 Facility Operating License, Appendix B - Part II, Environmental Protection Plan (Non-Radiological) Technical Specifications, Section 3.2, Reporting Related to the NPDES Permit. Specifically, Section 3.2.3., states: "Changes and additions to the NPDES Permit shall be reported to the NRC within 30 days following the date the change is approved."

This letter establishes no regulatory commitments.

If you have any questions regarding this report, please contact Mr. Mark Van Sicklen, Licensing Lead at (352) 501-3045.

Sincerely, Ivan L. Wilson Operations and Maintenance Manager Crystal River Nuclear Plant ILW/mvs

Attachment:

Crystal River Unit 3 NPDES Permit FL0A00004-001-IW1 S xc: NMSS Project Manager Regional Administrator, Region 1

DUKE ENERGY FLORIDA, LLC CRYSTAL RIVER UNIT 3 DOCKET NUMBERS 50-302 / 72-1035 LICENSE NUMBER DPR-72 REPORTING RELATED TO THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT ID#

FL0A00004-001-IW1 S ATTACHMENT CRYSTAL RIVER UNIT 3 NP DES PERMIT FL0A00004-001-IW1 S

FLORIDA DEPARTM ENT OF Ron DeSant11 Governor Environmental Protection Jeanette Nunez Lt Governor Tallahassee Office 2600 Blair Stone Road, M.S. 3545 Noah Valenstein Tallahassee, Florida 32399-2400 Secretary February 12, 2020 SENT BY EMAIL TO:

(Martin.Drango@duke-energy.com)

In the Matter of an Application for Permit by:

Crystal River Unit 3 File Number FL0A00004-001-IW 1S Martin Drango Citrus County 15760 West Power Line Street Duke Energy Florida, LLC Crystal River, Florida 34428 NOTICE OF PERMIT ISSUANCE Enclosed is Permit Number FL0A00004 to Duke Energy Florida, LLC for Crystal River Unit 3, issued under Chapter 403, Florida Statutes.

Monitoring requirements under this permit are effective on the first day of the second month following the effective date of the permit. Until such time, the permittee shall continue to monitor and report in accordance with previously effective permit requirements, if any.

NOTICE OF RIGHTS This action is final and effective on the date filed with the Clerk of the Department unless a petition for an administrative hearing is timely filed under Sections 120.569 and 120.57, F.S.,

before the deadline for filing a petition. On the filing of a timely and sufficient petition, this action will not be final and effective until further order of the Department. Because the administrative hearing process is designed to formulate final agency action, the hearing process may result in a modification of the agency action or even denial of the application.

Petition for Administrative Hearing A person whose substantial interests are affected by the Department's action may petition for an administrative proceeding (hearing) under Sections 120.569 and 120.57, F.S. Pursuant to Rules28-106.201 and 28-106.301, F .A.C., a petition for an administrative hearing must contain the following information:

(a) The name and address of each agency affected and each agency's file or identification number, if known;

Duke Energy Florida, LLC FLOA00004-001-IW1 S Page 2 (b) The name, address, any e-mail address, any facsimile number, and telephone number of the petitioner, if the petitioner is not represented by an attorney or a qualified representative; the name, address, and telephone number of the petitioner's representative, if any, which shall be the address for service purposes during the course of the proceeding; and an explanation of how the petitioner's substantial interests will be affected by the agency determination; (c) A statement of when and how the petitioner received notice of the agency decision; (d) A statement of all disputed issues of material fact. If there are none, the petition must so indicate; (e) A concise statement of the ultimate facts alleged, including the specific facts that the petitioner contends warrant reversal or modification of the agency's proposed action; (f) A statement of the specific rules or statutes that the petitioner contends require reversal or modification of the agency's proposed action, including an explanation of how the alleged facts relate to the specific rules or statutes; and (g) A statement of the relief sought by the petitioner, stating precisely the action that the petitioner wishes the agency to take with respect to the agency's proposed action.

The petition must be filed (received by the Clerk) in the Office of General Counsel of the Department at 3900 Commonwealth Boulevard, Mail Station 35, Tallahassee, Florida 32399-3000, or via electronic correspondence at Agency Clerk@dep.state.tl.us. Also, a copy of the petition shall be mailed to the applicant at the address indicated above at the time of filing.

Time Period for Filing a Petition In accordance with Rule 62-110.106(3), F .A.C., petitions for an administrative hearing by the applicant and persons entitled to written notice under Section 120.60(3), F.S., must be filed within 14 days of receipt of this written notice. Petitions filed by any persons other than the applicant, and other than those entitled to written notice under Section 120.60(3), F.S., must be filed within 14 days of publication of the notice or within 14 days of receipt of the written notice, whichever occurs first. You cannot justifiably rely on the finality of this decision unless notice of this decision and the right of substantially affected persons to challenge this decision has been duly published or otherwise provided to all persons substantially affected by the decision. While you are not required to publish notice of this action, you may elect to do so pursuant Rule 62-l l0. l 06(10)(a), F.A.C.

The failure to file a petition within the appropriate time period shall constitute a waiver of that person's right to request an administrative determination (hearing) under Sections 120.569 and 120.57, F.S., or to intervene in this proceeding and participate as a party to it. Any subsequent intervention (in a proceeding initiated by another party) will be only at the discretion of the presiding officer upon the filing of a motion in compliance with Rule 28-106.205, F .A.C. If you do not publish notice of this action, this waiver may not apply to persons who have not received a clear point-of-entry.

Extension of Time Under Rule 62-110.106(4), F.A.C., a person whose substantial interests are affected by the Department's action may also request an extension of time to file a petition for an administrative

Duke Energy Florida, LLC FL0A00004-001-IW IS Page 3 hearing. The Department may, for good cause shown, grant the request for an extension of time.

Requests for extension of time must be filed with the Office of General Counsel of the Department at 3900 Commonwealth Boulevard, Mail Station 35, Tallahassee, Florida 32399-3000, or via electronic correspondence at Agencv Clerk@dep.state.fl.us, before the deadline for filing a petition for an administrative hearing. A timely request for extension of time shall toll the running of the time period for filing a petition until the request is acted upon.

Mediation Mediation is not available in this proceeding.

Judicial Review Once this decision becomes final, any party to this action has the right to seek judicial review pursuant to Section 120.68, F .S., by filing a Notice of Appeal pursuant to Florida Rules of Appellate Procedure 9.110 and 9.190 with the Clerk of the Department in the Office of General Counsel (Station #35, 3900 Commonwealth Boulevard, Tallahassee, Florida 32399-3000) and by filing a copy of the Notice of Appeal accompanied by the applicable filing fees with the appropriate district court of appeal. The notice must be filed within 30 days from the date this action is filed with the Clerk of the Department.

EXECUTION AND CLERKING Executed in Tallahassee, Florida.

STATE OF FLORIDA DEPARTMENT OF ENVIRONMENTAL PROTECTION Marc H. Harris, P.E.

Program Administrator Wastewater Management Program Division of Water Resource Management Attachment(s):

1. Permit No. FL0A00004

2. Notice of Permit Issuance for optional newspaper publication

3. Fact Sheet

4. Discharge Monitoring Report CERTIFICATE OF SERVICE The undersigned duly designated deputy clerk hereby certifies that this document and all attachments were sent on the filing date below to the following listed persons:

EPA Region 4 (r4npdesperrnits@epa.gov)

Karrie-Jo Shell, Power Plant NPDES Permits, EPA Region 4 (shell.karrie-Jo c. ,epa.gov)

Bridget Staples, EPA Region 4 (staples.bridget c. ,epa.gov)

Duke Energy Florida, LLC FL0A00004-001-IW 1S Page 4 Jeff Kinnard, Chairman, Board of Citrus County Commissioners (jeff.kinnard(@,citrusbocc.com)

FWC, Conservation Planning Services (fwcconservationplanningservices@myfwc.com)

Charles Calleson, U.S. Fish and Wildlife Service (charles calleson(@,fws.gov)

Adam Brame, National Marine Fisheries Service (adam.brame@noaa.gov)

Florida Department of Economic Opportunity, State Land Planning Agency (dcppermits@deo.mytlorida.com)

Florida Department of State, Bureau of Historic Preservation (compliancepermits@dos.state.tl.us)

U.S. Army Corps of Engineers (james.j.mcadams@usace.arm y.mi l)

Ilia Balcom, Duke Energy (ilia.balcom(@,duke-energy.com)

Jorge Perez, FDEP Tampa (jorge.perez(@,tloridadep.gov)

Mike Lynch, FDEP Tampa (michael.lynch@tloridadep.gov)

Cindy Mulkey, Siting Coordination Office, FDEP (cindy.mulkey(@,tloridadep.gov )

Diana Csank, Sierra Club ( diana.csank@sierraclub.org)

FILING AND ACKNOWLEDGMENT FILED, on this date, pursuant to Section 120.52, F. S., with the designated Department Clerk, receipt of which is hereby acknowledged.

~~

Clerk:

02-12-2020 Date

STA TE OF FLORIDA DEPARTMENT OF ENVIRONMENTAL PROTECTION NOTICE OF PERMIT ISSUANCE The Department of Environmental Protection gives notice of its issuance of a permit to Duke Energy Florida, LLC for Crystal River Unit 3, under Chapter 403, Florida Statutes.

The permit and application file are available for public inspection during normal business hours, 8:00 a.m. to 5:00 p.m., Monday through Friday, except legal holidays, at the Department's Industrial Wastewater Office, 2600 Blair Stone Road, M.S. 3545, Tallahassee, Florida 32399-2400, at phone number (850)245-8589.

NOTICE OF RIGHTS This action is final and effective on the date filed with the Clerk of the Department unless a petition for an administrative hearing is timely filed under Sections 120.569 and 120.57, F.S.,

before the deadline for filing a petition. On the filing of a timely and sufficient petition, this action will not be final and effective until further order of the Department. Because the administrative hearing process is designed to formulate final agency action, the hearing process may result in a modification of the agency action or even denial of the application.

Petition for Administrative Hearing A person whose substantial interests are affected by the Department's action may petition for an administrative proceeding (hearing) under Sections 120.569 and 120.57, F.S. Pursuant to Rules28-106.20 l and 28-106.301, F .A.C., a petition for an administrative hearing must contain the following information:

(a) The name and address of each agency affected and each agency's file or identification number, if known; (b) The name, address, any e-mail address, any facsimile number, and telephone number of the petitioner, if the petitioner is not represented by an attorney or a qualified representative; the name, address, and telephone number of the petitioner's representative, if any, which shall be the address for service purposes during the course of the proceeding; and an explanation of how the petitioner's substantial interests will be affected by the agency determination; (c) A statement of when and how the petitioner received notice of the agency decision; (d) A statement of all disputed issues of material fact. If there are none, the petition must so indicate; (e) A concise statement of the ultimate facts alleged, including the specific facts that the petitioner contends warrant reversal or modification of the agency's proposed action; (t) A statement of the specific rules or statutes that the petitioner contends require reversal or modification of the agency's proposed action, including an explanation of how the alleged facts relate to the specific rules or statutes; and (g) A statement of the relief sought by the petitioner, stating precisely the action that the petitioner wishes the agency to take with respect to the agency's proposed action.

The petition must be filed (received by the Clerk) in the Office of General Counsel of the Department at 3900 Commonwealth Boulevard, Mail Station 35, Tallahassee, Florida 32399-3000, or via electronic correspondence at Agencv Clerk@dep.state.tl.us. Also, a copy of the petition shall be mailed to the applicant at the address indicated above at the time of filing.

Time Period for Filing a Petition Petitions filed by any persons other than the applicant, and other than those entitled to written notice under Section 120.60(3), F.S., must be filed within 14 days of publication of the notice or within 14 days of receipt of the written notice, whichever occurs first. The failure to file a petition within the appropriate time period shall constitute a waiver of that person's right to request an administrative determination (hearing) under Sections 120.569 and 120.57, F.S., or to intervene in this proceeding and participate as a party to it. Any subsequent intervention (in a proceeding initiated by another party) will be only at the discretion of the presiding officer upon the filing of a motion in compliance with Rule 28-106.205, F .A.C.

Extension of Time Under Rule 62-110.106(4), F.A.C., a person whose substantial interests are affected by the Department's action may also request an extension of time to file a petition for an administrative hearing. The Department may, for good cause shown, grant the request for an extension of time.Requests for extension of time must be filed with the Office of General Counsel of the Department at 3900 Commonwealth Boulevard, Mail Station 35, Tallahassee, Florida 32399-3000, or via electronic correspondence at Agency Clerk@dep.state.tl.us, before the deadline for filing a petition for an administrative hearing. A timely request for extension of time shall toll the running of the time period for filing a petition until the request is acted upon.

Mediation Mediation is not available in this proceeding.

Judicial Review Once this decision becomes final, any party to this action has the right to seek judicial review pursuant to Section 120.68, F .S., by filing a Notice of Appeal pursuant to Florida Rules of Appellate Procedure 9.110 and 9.190 with the Clerk of the Department in the Office of General Counsel (Station #35, 3900 Commonwealth Boulevard, Tallahassee, Florida 32399-3000) and by filing a copy of the Notice of Appeal accompanied by the applicable filing fees with the appropriate district court of appeal. The notice must be filed within 30 days from the date this action is filed with the Clerk of the Department.

STATE OF FLORIDA INDUSTRIAL WASTEWATER FACILITY PERMIT PERMITTEE: PERMIT NUMBER: FL0A00004 (Major)

Duke Energy Florida, LLC (DEF) FILE NUMBER: FL0A 00004-001-IW I S ISSUANCE DATE: February 12, 2020 RESPONSIBLE OFFICIAL: EXPIRATION DATE: February 11, 2025 Mr. Martin J. Drango Station Manager Crystal River Unit 3 15760 West Power Line Street, POC Crystal River, FL 34428 FACILITY:

Crystal River Unit 3 15760 West Power Line Street Crystal River, FL 34428 Citrus County Latitude: 28° 57' 27" N Longitude: 82° 41' 58" W This permit is issued under the provisions of Chapter 403, Florida Statutes (F.S.) and applicable rules of the Florida Administrative Code (F.A.C.), and constitutes authorization to discharge to waters of the state under the National Pollutant Discharge Elimination System. This permit does not constitute authorization to discharge wastewater other than as expressly stated in this permit. The above named permittee is hereby authorized to operate the facilities in accordance with the documents attached hereto and specifically described as follows:

FACILITY DESCRIPTION:

The Crystal River Energy Complex (CREC) is an electric generating plant located on an approximately 4,729 acre site near the mouth of Crystal River. The CREC formerly consisted of five steam electric generating units (Units I, 2, 3, 4 and 5) with a total nameplate rating of3,333.l megawatts (MW). Units I and 2 were retired in 2018. Units I and 2 were pulverized coal-fired steam electric generating units and Unit 3 was a nuclear fueled electric generating unit. Unit 3 was shut down in September 2009, and retired on February 5, 2013. Units I and 2 had a combined total name plate rating of approximately 964 MW. Unit 3 had a name plate rating of approximately 860 MW. The surface water discharges from the Citrus Combined Cycle (CCC) Station are regulated under a separate wastewater permit (NP DES Permit No. FL0000 159). The surface water discharges from Units 4 and 5, including outfalls and monitoring locations previously associated with Units I and 2, are regulated under a separate wastewater permit (NPDES Permit No. FL0036366). Operation of a domestic and industrial wastewater treatment and disposal system to serve the facility is regulated under the Florida Electrical Power Plant Siting Act (License No. PA77-09).

The radioactive component of the discharge is regulated by the U.S. Nuclear Regulatory Commission under Atomic Energy Act and not by the U.S. Environmental Protection Agency under the Clean Water Act.

WASTEWATER TREATMENT:

With the announced retirement of Unit 3 on February 5, 2013, the unit no longer discharges once-through noncontact cooling water (OTCW) from outfall D-013. Unit 3 has not discharged OTCW since September 2009.

The site discharge canal serves Unit 3, CCC, and Units 4 & 5 which discharge under separate wastewater permits. The site discharge canal discharges to Crystal Bay, which is part of the Gulf of Mexico, and is a Class II marine surface water.

The Unit 3 Raw Water (RW) system discharge, Station Drain Tank-I (SOT-I) system (non-radwaste treatment system), and Evaporator Condensate Storage Tanks (ECST) system (radwaste treatment system will remain in operation due to the continued operation of ancillary processes. The process wastewaters generated by these systems will continue to be discharged from Outfall D-00F. An additional system was added to support SAFSTOR II operation that will discharge to Outfall O-00F.

PERMITTEE: Duke Energy Florida, LLC PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February II, 2025 Raw Water System Discharge: The RW system is water pumped from the intake canal to the plant that discharges through Outfall D-O0F. The water collected is from internal outfall I-FG, SAFESTOR II System, and Evaporator Condensate Storage Tanks (ECST).

Station Drain Tank 1 system: The SDT-1 is a regeneration waste neutralization tank or secondary drain Tank 1. The system uses neutralization and oil-water separation to control oil and grease as required, prior to discharge through internal outfall I-FG, it is isolated and sampled for treatment or batch release. The treated wastewater is then discharged by batch releases through internal outfall I-FG into the Raw Water (RW) system to outfall D-00F, or alternatively to the on-site industrial wastewater percolation ponds under License No. PA 77-09P or routed to discharge through the ECST outfall. The waste streams treated in this system include the following low volume waste streams: building floor drains, equipment drains laboratory drains, rain water intrusion, and system leakage and testing.

Evaporator Condensate Storage Tanks system: The ECST system uses filtration and ion exchange system for pollution control as required. Spent resins are sluiced to a spent resin storage tank along with other spent resins (e.g., those used to polish water used for the spent fuel pool), whereby they are then disposed off-site. The treated sluice water is then discharged by batch releases through outfall D-00F. Wastewater is pumped to the Miscellaneous Waste Storage Tank that also receives stream from the reactor building sump.

The ECST system consists of two tanks in the Auxiliary Building that collects wastewater from low volume wastes: floor drain, laboratories drain, system leakage, ion exchange resin sluice water, and cleaning activities.

Note, these wastewaters are required to be monitored and meet limits for several radionuclides in accordance with the U.S.

Nuclear Regulatory Commission under Atomic Energy Act and not by the U.S. Environmental Protection Agency under the Clean Water Act.

SAFSTOR II System: In July 2019, Unit 3 began operation in SAFSTOR II mode. Wastewater consisting primarily of contact stormwater, groundwater, and seawater from the reactor, auxiliary, and turbine building sumps, and other miscellaneous sumps will be collected in a collection tank. Treatment includes neutralization and oil/water separation as needed. Recirculated wastewater from the collection tank receives additional treatment via filtration as needed. The wastewater from the collection tank is batch discharged through outfall D-00F. Note, these wastewaters are required to be monitored and meet limits for several radionuclides in accordance with the U.S. Nuclear Regulatory Commission under Atomic Energy Act and not by the U.S. Environmental Protection Agency under the Clean Water Act.

EFFLUENT DISPOSAL:

Surface Water Discharge D-00F: An existing intermittent discharge ofRW system and ancillary water effluent to the Crystal River Energy Complex main discharge canal and thence to the Gulf of Mexico (WBID 8039), a Class II Marine Water. The point of discharge is located approximately at latitude 28° 57' 31.5" N, longitude 82° 41' 56.5" W.

Internal Outfall I-FG: An existing intermittent discharge from the regeneration waste neutralization tank to Outfall D-00F.

Stormwater Discharges D-100, D-200, D-300, D-400, D-500, and D-600: Existing discharges ofstormwater are authorized under a separate Department-issued NPDES Multi-Sector Generic Permit (MSGP), permit number FLR05H479 et.seq.

IN ACCORDANCE WITH: The limitations, monitoring requirements and other conditions set forth in this Cover Sheet and Part I through Part IX on pages 1 through 22 of this permit.

2

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025 I. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS A. Surface Water Discharges I. During the period beginning on the issuance date and lasting through the expiration date of this permit, the permittee is authorized to discharge SAFSTOR II ancillary water collected in plant sumps which is primarily contact stormwater, groundwater, and seawater from the reactor, auxiliary, and turbine building sumps, miscellaneous sumps, and the RW system effluent from Outfall D-OOF [includes discharges from Outfall 1-FG

- Station Drain Tank (SDT-1); SAFESTOR II System, and effluent from the Evaporator Condensate Storage Tank (ECST)] to the site discharge canal and thence the Gulf of Mexico. Such discharge shall be limited and monitored by the permittee as specified below and reported in accordance with Permit Condition I.C.3.:

Effluent Limitations Monitoring Requirements Monitoring Max/ Frequency of Sample Site Parameter Units Min Limit Statistical Basis Analysis Type Number Notes Max Report Daily Maximum Logs or Flow (RW) MGD Hourly INT-7A Max Report Monthly Average Calculated Flow (ECST or SAFSTOR Max Report Daily Maximum Daily, when Logs or MGD EFF-7B Collection Tank) Max Report Monthly Average discharging Calculated Oil and Grease Max 5.0 Daily Maximum Weekly, when (ECST or SAFSTOR mg/L Max Grab EFF-7 See l.A.3 5.0 Monthly Average discharging Collection Tank) [D-00F]

Solids, Total Suspended Max 100.0 Daily Maximum Weekly, when (ECST or SAFSTOR mg/L Grab EFF-7 See l.A.4 Max 30.0 Monthly Average discharging Collection Tank) [D-00F]

Max Report Daily Maximum Number of batches # Monthly Log EFF-7 Max Report Monthly Total Max Report Daily Maximum Daily, when In-situ INT-7A Min Report Daily Minimum discharging pH s.u. ------

Max 8.5 Daily Maximum Daily, when In-situ EFF-7 See I.A.5 Min 6.5 Daily Minimum discharging Acute Whole Effluent Toxicity, 96 Hour LC50 percent Min 100 Single Sample Annually Grab EFF-7 See I.A.6 (Menidia beryllina)

Acute Whole Effluent Toxicity, 96 Hour LC50 percent Min 100 Single Sample Annually Grab EFF-7 See l.A.6 (Americamysis (Mysidopsis) bahia)

2. Effluent samples shall be taken at the monitoring site locations listed in Permit Condition I.A. I and as described below:

Monitoring Site Number Description of Monitoring Site INT-7A Intake to Unit 3.

EFF-7 At the point of discharge to the site discharge canal.

EFF-7B Prior to discharge to Outfall D-00F.

3. Monitoring requirements for oil and grease in the combined discharge (Outfall D-00F) are only applicable if the discharge from Outfall I-FG, or the ECST effluent (following adequate mixing) exceeds the daily maximum limitation of20.0 mg/Lor a minimal dilution rate of 4 to I is not achieved as determined by the operator and recorded in logs maintained onsite for inspection by the Department.

3

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025 Monitoring requirements for oil and grease in the combined discharge (Outfall D-00F) are only applicable if the discharge from the SAFSTOR II collection tank (following adequate mixing) exceeds the daily maximum limitation of5.0 mg/Land ifRW system dilution flow is being utilized to support the discharge. RW system and effluent flow rates are recorded in logs maintained onsite for inspection by the Department.

4. Monitoring requirements for total suspended solids in the combined discharge (Outfall D-00F) are only applicable if the discharge from Outfall I-FG, or the ECST (following adequate mixing) exceeds the daily maximum limitation of 100.0 mg/Lor a minimal dilution rate of 4 to I is not achieved as determined by the operator and recorded in logs maintained onsite for inspection by the Department.

Monitoring requirements for total suspended solids in the combined discharge (Outfall D-00F) are only applicable if the discharge from the SAFSTOR II collection tank (following adequate mixing) exceeds the monthly average limitation of30.0 mg/Land ifRW system dilution flow is being utilized to support discharge.

R W system and effluent flow rates are recorded in logs maintained onsite for inspection by the Department.

5. Monitoring for pH in the combined discharge (D-00F) is required only during periods when I-FG or the SAFSTOR II collection tank is discharging, and then only if the pH from l-FG or the SAFSTOR II collection tank is outside the range of 6.5-8.5. If no discharge from I-FG occurs, sampling shall be during next discharge of I-FG or the SAFSTOR II collection tank into the combined discharge at D-00F.

6. The permittee shall comply with the following requirements to evaluate acute whole effluent toxicity of the discharge from outfall D-00 F.

a. Effluent Limitation (l) In any routine or additional follow-up test for acute whole effluent toxicity, the 96-hour LCSO shall not be less than 100% effluent. [Rules62-302.200(1),62-302.500(l)(a)4., 62-4.244(3)(a), and 62-4.24l(l)(a) or (2)(a), F.A.C.]

b. Monitoring Frequency (I) Routine toxicity tests shall be conducted annually, the first starting within 60 days of the effective date of this permit and lasting for the duration of this permit.

c. Sampling Requirements (I) Routine tests shall be conducted on one grab sample.

(2) For additional follow-up tests, the first and second test shall be conducted on grab samples.

d. Test Requirements (I) Routine Tests: All routine tests shall be conducted using a control (0% effluent) and a minimum of five dilutions: 100%, 75%, 50%, 25%, and 12.5% effluent.

(2) The permittee shall conduct 96-hour acute static renewal toxicity tests using the mysid, Americamysis (Mysidopsis) bahia, and the inland silverside, Menidia beryllina, concurrently.

(3) All test species, procedures and quality assurance criteria used shall be in accordance with Methods for Measuring Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, 5th Edition, EPA-821-R-02-012. Any deviation of the bioassay procedures outlined herein shall be submitted in writing to the Department for review and approval prior to use. In the event the above method is revised, the permittee shall conduct acute toxicity testing in accordance with the revised method.

(4) The control water and dilution water used shall be artificial seawater and diluted to the test salinity as described in EPA-821-R-02-012, Section 7.2.4. The test salinity shall be determined as follows:

(a) When the salinity of the effluent is between I and 7 parts per thousand (ppt), the following salinity adjustment shall be used. For the Americamysis bahia bioassays, the effluent and the control (0%

effluent) shall be adjusted to a salinity of7 ppt for the 100% effluent test using artificial sea salts.

No salinity adjustment shall be done for the Menidia beryllina bioassay test. The salinity of the control/dilution water (0% effluent) shall match the test salinity of the effluent. A salinity adjustment control should be prepared and included with the Americamysis bahia bioassay. The 4

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025 salinity adjustment control is intended to identify toxicity resulting from adjusting the salinity of the effluent with artificial sea salts. To prepare the salinity adjustment control, dilute the control/dilution water to the salinity of the effluent and adjust the salinity of the salinity adjustment control to 7 ppt at the same time that the salinity of the effluent is adjusted to 7 ppt, using the same artificial sea salts.

(b) When the salinity of the effluent is greater than 7 ppt, no salinity adjustment shall be made to the effluent and the test shall be run at the effluent salinity. The salinity of the control/dilution water (0% effluent) shall match the test salinity of the effluent.

e. Quality Assurance Requirements (1) A standard reference toxicant (SRT) quality assurance (QA) acute toxicity test shall be conducted with each species used in the required toxicity tests either concurrently or initiated no more than 30 days before the date of each routine or additional follow-up test conducted. Additionally, the SRT test must be conducted concurrently if the test organisms are obtained from outside the test laboratory unless the test organism supplier provides control chart data from at least the last five monthly acute toxicity tests using the same reference toxicant and test conditions. If the organism supplier provides the required SRT data, the organism supplier's SRT data and the test laboratory's monthly SRT-QA data shall be included in the reports for each companion routine or additional follow-up test required.

(2) If the mortality in the control (0% effluent) exceeds 10% for either species in any test, the test for that species (including the control) shall be invalidated and the test repeated. The repeat test shall begin within 14 days after the last day of the invalid test.

(3) If 100% mortality occurs in all effluent concentrations for either species prior to the end of any test and the control mortality is less than 10% at that time, the test (including the control) for that species shall be terminated with the conclusion that the test fails and constitutes non-compliance.

(4) Routine and additional follow-up tests shall be evaluated for acceptability based on the concentration-response relationship, as required by EPA-821-R-02-012, Section 12.2.6.2., and included with the bioassay laboratory reports.

f. Reporting Requirements

( 1) Results from all required tests shall be reported on the Discharge Monitoring Report (DMR) as follows:

(a) Routine Test Results: If an LC50 > 100% effluent occurs in all four separate grab sample tests for the test species, "> 100%" shall be entered on the DMR for that test species. If in any of the four separate grab sample tests for the test species an LC50 <l 00% effluent occurs, the lowest calculated LC50 effluent concentration shall be entered on the DMR for that test species.

(b) Additional Follow-up Test Results: For each additional test required, the calculated LC50 value shall be entered on the DMR for that test species.

(2) A bioassay laboratory report for the routine test shall be prepared according to EPA-821-R-02-012, Section 12, Report Preparation and Test Review, and mailed to the Department at the address below within 30 days after the last day of the test.

(3) For additional follow-up tests, a single bioassay laboratory report shall be prepared according to EPA-821-R-02-012, Section 12, and mailed within 30 days after the last day of the second valid additional follow-up test.

(4) Data for invalid tests shall be included in the bioassay laboratory report for the repeat test.

(5) The same bioassay data shall not be reported as the results of more than one test.

(6) All bioassay laboratory reports shall be sent to:

Florida Department of Environmental Protection Industrial Wastewater Office 2600 Blair Stone Road, M.S. 3545 Tallahassee, Florida 32399-2400

g. Test Failures

( 1) A test fails when the test results do not meet the limits in 6.a.( 1).

(2) Additional Follow-up Tests:

5

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 (a) If a routine test does not meet the acute toxicity limitation in 6.a.( 1) above, the permittee shall notify the Department at the address above within 21 days after the last day of the failed routine test and conduct two additional follow-up tests on each species that failed the test in accordance with 6.d.

(b) The first test shall be initiated within 28 days after the last day of the failed routine test. The remaining additional follow-up tests shall be conducted weekly thereafter until a total of two valid additional follow-up tests are completed.

(c) The first additional follow-up test shall be conducted using a control (0% effluent) and a minimum of five dilutions: 100%, 75%, 50%, 25%, and 12.5% effluent. The permittee may modify the dilution series in the second additional follow-up test to more accurately bracket the toxicity such that at least two dilutions above and two dilutions below the target concentration and a control (0% effluent) are run. All test results shall be statistically analyzed according to the procedures in EPA-821-R-02-012.

(3) In the event of three valid test failures (whether routine or additional follow-up tests) within a 12-month period, the permittee shall notify the Department within 21 days after the last day of the third test failure.

(a) The permittee shall submit a plan for correction of the effluent toxicity within 60 days after the last day of the third test failure.

(b) The Department shall review and approve the plan before initiation.

(c) The plan shall be initiated within 30 days following the Department's written approval of the plan.

(d) Progress reports shall be submitted quarterly to the Department at the address above.

(e) During the implementation of the plan, the permittee shall conduct quarterly routine whole effluent toxicity tests in accordance with 6.d. Additional follow-up tests are not required while the plan is in progress. Following completion or termination of the plan, the frequency of monitoring for routine and additional follow-up tests shall return to the schedule established in 6.b.( 1). If a routine test is invalid according to the acceptance criteria in EPA-821-R-02-012, a repeat test shall be initiated within 14 days after the last day of the invalid routine test.

(t) Upon completion of four consecutive quarterly valid routine tests that demonstrate compliance with the effluent limitation in 6.a.(l) above, the permittee may submit a written request to the Department to terminate the plan. The plan shall be terminated upon written verification by the Department that the facility has passed at least four consecutive quarterly valid routine whole effluent toxicity tests. If a test within the sequence of the four is deemed invalid, but is replaced by a repeat valid test initiated within 14 days after the last day of the invalid test, the invalid test will not be counted against the requirement for four consecutive quarterly valid routine tests for the purpose of terminating the plan.

(4) The additional follow-up testing and the plan do not preclude the Department taking enforcement action for whole effluent toxicity failures.

[62-4.241,62-620.620(3)}

7. Material collected on the intake screens shall be removed and disposed of in accordance with all the existing federal, state and or local laws and regulations that apply to waste disposal. Such material shall not be returned to the receiving waters. [C.W.A. 316 (b)]

8. Nothing in this permit authorizes take for the purposes of a facility's compliance with the Endangered Species Act. [40 CFR 125.98(b)(l)]

9. The permittee shall comply with all mandatory reporting requirements related to endangered or threatened species, as may be required by state and federal fish and wildlife agencies. The permittee shall provide a copy of any such reports, and any related documentation, to the Department's Tallahassee Wastewater Management Program.

10. Any discharge from the industrial wastewater (IWW) pond system via pumping or any emergency overflow structure which results from any event less than a 25-year, 24-hour storm (as defined by the U.S. Weather 6

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 Bureau Technical Paper No. 40, or the DOT drainage manual, or similar documents) shall meet State Water Quality Standards, Chapter 62-302, F.A.C. If the potential for routine surface water discharges exists during events less than a 25-year, 24-hr storm, the permittee shall apply for coverage under this NPDES permit to cover such discharges. All discharges from the IWW pond system, including those resulting from events exceeding a 25-year, 24-hour storm, shall be subject to the bypass provisions of Section IX, Condition 22.

8. Internal Outfalls

l. During the period beginning on the issuance date and lasting through the expiration date of this permit, the permittee is authorized to discharge Station Drain Tank (SDT-1) wastewater from Internal Outfall 1-FG to Outfall D-OOF. Such discharge shall be limited and monitored by the permittee as specified below and reported in accordance with Permit Condition l.C.3.:

Effluent Limitations Monitoring Requirements Monitoring Max/ Frequency Sample Site Parameter Units Min Limit Statistical Basis of Analysis Type Number Notes Max Report Daily Maximum One Flow MGD Calculated EFF-8 Max Report Monthly Average Batch/month Max 20.0 Daily Maximum One Oil and Grease mg/L Grab EFF-8 Max 15.0 Monthly Average Batch/month Max 100.0 Daily Maximum One Total Suspended Solids mg/L Grab EFF-8 Max 30.0 Monthly Average Batch/month Max 9.0 Daily Maximum One See pH s.u. In-situ EFF-8 Min 6.0 Daily Minimum Batch/month I.A.5 Max Report Daily Maximum Number of batches # Monthly Log EFF-8 Max Report Monthly Total

2. Effluent samples shall be taken at the monitoring site locations listed in Permit Condition 1.8. l and as described below:

Monitoring Site Number Description of Monitoring Site EFF-8 At Outfall 1-FG prior to mixing with Outfall D-00F.

C. Other Limitations and Monitoring and Reporting Requirements I. The sample collection, analytical test methods, and method detection limits (MDLs) applicable to this permit shall be conducted using a sufficiently sensitive method to ensure compliance with applicable water quality standards and effluent limitations and shall be in accordance with Rule 62-4.246, Chapters62-160 and 62-60 I, F.A.C., and 40 CFR 136, as appropriate. The list of Department established analytical methods, and corresponding MDLs (method detection limits) and PQLs (practical quantitation limits), which is titled "Rule 62-4, F.A.C. MDL/PQL Table (May 31, 2019)" is available at https://tloridadep.gov/dear/qualitv-assurance/content/qualitv-assurance-resources. The MDLs and PQLs as described in this list shall constitute the minimum acceptable MDL/PQL values and the Department shall not accept results for which the laboratory's MDLs or PQLs are greater than those described above unless alternate MDLs and/or PQLs have been specifically approved by the Department for this permit. Any method included in the list may be used for reporting as long as it meets the following requirements:

a. The laboratory's reported MDL and PQL values for the particular method must be equal or less than the corresponding method values specified in the Department's approved MDL and PQL list; 7

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February l l, 2025

b. The laboratory reported MDL for the specific parameter is less than or equal to the permit limit or the applicable water quality criteria, if any, stated in Chapter 62-302, F.A.C. Parameters that are listed as "report only" in the permit shall use methods that provide an MDL, which is equal to or less than the applicable water quality criteria stated in 62-302, F.A.C.; and

c. If the MDLs for all methods available in the approved list are above the stated permit limit or applicable water quality criteria for that parameter, then the method with the lowest stated MDL shall be used.

When the analytical results are below method detection or practical quantitation limits, the permittee shall report the actual laboratory MDL and/or PQL values for the analyses that were performed following the instructions on the applicable discharge monitoring report.

Where necessary, the permittee may request approval of alternate methods or for alternative MD Ls or PQLs for any approved analytical method. Approval of alternate laboratory MDLs or PQLs are not necessary if the laboratory reported MDLs and PQLs are less than or equal to the permit limit or the applicable water quality criteria, if any, stated in Chapter 62-302, F.A.C. Approval ofan analytical method not included in the above-referenced list is not necessary if the analytical method is approved in accordance with 40 CFR 136 or deemed acceptable by the Department. {62-4.246, 62-160]

2. The permittee shall provide safe access points for obtaining representative influent and effluent samples which are required by this permit. {62-620.320(6)]

3. Monitoring requirements under this permit are effective on the first day of the second month following permit issuance. Until such time, the permittee shall continue to monitor and report in accordance with previously effective permit requirements, if any. During the period ofoperation authorized by this permit, the permittee shall complete and submit to the Department Discharge Monitoring Reports (DMRs) in accordance with the frequencies specified by the REPORT type (i.e. monthly, quarterly, semiannual, annual, etc.) indicated on the DMR forms attached to this permit. Monitoring results for each monitoring period shall be submitted in accordance with the associated DMR due dates below.

REPORT Type on DMR Monitoring Period Due Date Monthly first day of month - last day of month 28 1h day of following month Quarterly January I - March 31 April 28 April I - June 30 July 28 July I - September 30 October 28 October I - December 31 January 28 Semiannual January I - June 30 July 28 Julv I - December 30 January 28 Annual Januarv I - December 31 January 28 The permittee shall use the electronic DMR system approved by the Department (EzDMR) and shall electronically submit the sample results as an attachment to the EzDMR submittal, in accordance with Permit Condition I.C.3., using the DEP Business Portal at http://www.fldepportal.com/go/, unless the permittee has a waiver from the Department in accordance with 40 CFR 127.15. Reports shall be submitted to the Department by the twenty-eighth (28th) of the month following the month ofoperation.

{62-620.610(18)]

4. Unless specified otherwise in this permit, all reports and other information required by this permit, including 24-hour notifications, shall be submitted to or reported to, as appropriate, the Department's Southwest District Office at the address specified below:

Florida Department of Environmental Protection Southwest District Office 1305 l N. Telecom Parkway Temple Terrace, Florida 33637 Phone Number- (813) 470-5700 8

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025

{62-620.305}

5. All reports and other information shall be signed in accordance with the requirements of Rule 62-620.305, F.A.C. {62-620.305}

6. If there is no discharge from the facility on a day when the facility would normally sample, the sample shall be collected on the day of the next discharge. {62-620.320(6)}

7. The permittee shall report all visible discharges of floating materials, such as ash or oil sheen, to the Department's Southwest District Office when submitting DMR forms. Field data sheets shall have appropriate blank(s) to report observations.

8. There shall be no discharge ofpolychlorinated biphenyl compounds such as those commonly used for transformer fluid. The permittee shall dispose of all known PCB equipment, articles, and wastes either in accordance with:

a. Department-issued permits governing soil thermal treatment (Chapter 62-713, F.A.C.) or Department-approved landfills provided the PCB concentrations meet the Florida landfill's permitted limit when concentrations are less than 50 ppm; or

b. 40 CFR 761 when concentrations are greater than or equal to 50 ppm.

{40 CFR Part 423. I 2(b)(2)}

9. Discharge of any product registered under the Federal Insecticide, Fungicide, and Rodenticide Act to any waste stream that ultimately may be released to waters of the State is prohibited unless specifically authorized elsewhere in a permit; except products used for lawn and agricultural purposes or to the use of herbicides if used in accordance with labeled instructions and any applicable State permit. In the event the permittee proposes to use biocides, corrosion inhibitors, or additives not authorized in this permit, or not previously reported to the Department, that ultimately may be released to waters of the State, the permittee shall notify the Department in writing a minimum of thirty (30) days prior to instituting the use of such product. The product shall not be used prior to a determination by the Department that a permit revision is not required or prior to Department approval. Such notification shall include:

a. Name and general composition ofbiocide or chemical

b. Frequencies of use

c. Quantities to be used

d. Proposed effluent concentrations

e. Acute and/or chronic toxicity data (laboratory reports shall be prepared, depending on the test type, according to Section 12 of EPA document no. EPA-821-R-02-012 entitled, Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters for Freshwater and Marine Organisms, Section 10 of EPA document no. EPA-821-R-02-013 entitled, Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms or Section 10 of EPA document no. EPA-821-R-02-014 entitled, Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms, or most current addition)

f. Product data sheet

g. Product label, or EPA registration number, if applicable.

A revision to this permit is not necessary for use of products equivalent to those authorized in this permit provided the equivalent products consist of the same active ingredients and the product is applied at the same location with the same or lower concentrations of the active ingredients at the outfall. The permittee is responsible for maintaining documentation on-site which demonstrates equivalency of any new water treatment products from another vendor or manufacturer with a different product name from those listed above.

9

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025

10. Discharge of any waste resulting from the combustion of toxic, hazardous, or metal cleaning wastes to any waste stream which ultimately discharges to waters of the State is prohibited, unless specifically authorized elsewhere in this permit.

11. The permittee shall not store coal, soil, or other similar erodable materials in a manner in which runoff is uncontrolled, nor conduct construction activities in a manner, which produces uncontrolled runoff unless such uncontrolled runoff has been specifically approved by the Department. "Uncontrolled shall mean without a sedimentation basin or other controls approved by the Department.

12. Unless otherwise specifically permitted in this permit, there shall be no point source discharges of any wastes to waters of the State, or to any waste stream which enters such waters. The permittee shall operate and maintain loading and unloading facilities in such a manner in order to preclude spillage of coal, chemicals, etc., used at the facility, and shall take all actions necessary to clean-up and control any such spill which may occur.

13. Any water drained from the fuel oil storage tanks or other water which meets the definition of "Petroleum Contact Water" as defined in Rule 62-740.030(1), F.A.C., shall be disposed at a Department-approved facility in accordance with Chapter 62-740, F.A.C.

14. Any bypass of the treatment facility which is not included in the monitoring specified in sections I.A and I.B is to be monitored for flow and all other required parameters. For parameters other than flow, at least one grab sample per day shall be collected. Daily flow shall be monitored or estimated, as appropriate, to obtain reportable data. All monitoring results shall be reported on the appropriate DMR.

15. Combined Waste Stream: In the event that waste streams from various sources are combined for treatment or discharge, the quantity of each pollutant or pollutant property attributable to each controlled waste source shall not exceed the specified limitation for that waste source (ref. 40 CFR Section 423.15(k); 1974).

16. The discharge shall not contain components that, alone or in combination with other substances or in combination with other components of the discharge:

a. Settle to form putrescent deposits or otherwise create a nuisance; or

b. Float as debris, scum, oil, or other matter in such amounts as to form nuisances; or

c. Produce color, odor, taste, turbidity, or other conditions in such degree as to create a nuisance; or

d. Are acutely toxic; or

e. Are present in concentrations which are carcinogenic, mutagenic, or teratogenic to human beings or to significant, locally occurring, wildlife or aquatic species, unless specific standards are established for such components in subsection 62-302.500(2) or Rule 62-302.530, F.A.C.; or

f. Pose a serious danger to the public health, safety, or welfare.

[62-302.500(J)(a)}

17. A revision to this permit is not necessary for the following activities:

a. Structural changes that do not change the quality, nature, or quantity of the discharge of wastes or that do not cause water pollution; and

b. Construction, replacement or repair of components at the facility which does not change the permitted treatment works or the terms and conditions of this permit.

Records of these activities shall be kept by the permittee (activity description, start date and length of activity).

The documentation shall be kept on-site in accordance with Permit Condition V .2, and made available to Department staff upon request. [62-620.200(26)(a) & (b)}

ll. SLUDGE MANAGEMENT REQUIREMENTS 10

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025 I. The permittee shall be responsible for proper treatment, management, use, and disposal of its sludges.

{62-620.320(6)}

2. Storage, transportation, and disposal of sludge/solids characterized as hazardous waste shall be in accordance with requirements of Chapter 62-730, F.A.C. {62-730}

3. Decay vegetation and materials removed from intake screens and vegetation, sediments and sludge excavated from the settling basins and percolation basins must be properly stored onsite until they are disposed in accordance with the Department-approved site-specific Crystal River CCP/Solid Waste Materials Management Plan, or per requirements in Chapter 62-701, F .A.C., and other applicable State and Federal requirements.

4. The permittee shall keep records of the amount of sludge or residuals disposed, transported, or incinerated in (Please specify units). If a person other than the permittee is responsible for sludge transporting, disposal, or incineration, the permittee shall also keep the following records:

a. Name, address and telephone number of any transporter, and any manifests or bill of lading used;

b. Name and location of the site of disposal, treatment or incineration;

c. Name, address, and telephone number of the entity responsible for the disposal, treatment, or incineration site.

III. GROUND WATER REQUIREMENTS

1.Section III is not applicable to this facility. Ground water monitoring requirements for this facility are included in Conditions of Certification PA77-09.

2. The discharge to groundwater shall not impair the designated use of contiguous surface waters. {62-520.310(2)}

IV. ADDITIONAL LAND APPLICATION REQUIREMENTS Section IV is not applicable to this facility.

V. OPERATION AND MAINTENANCE REQUIREMENTS

1. During the period of operation authorized by this permit, the wastewater facilities shall be operated under the supervision of a person who is qualified by formal training and/or practical experience in the field of water pollution control. {62-620.320(6)}

2. The permittee shall maintain the following records and make them available for inspection on the site of the permitted facility.

a. Records of all compliance monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, including, if applicable, a copy of the laboratory certification showing the certification number of the laboratory, for at least three years from the date the sample or measurement was taken;

b. Copies of all reports required by the permit for at least three years from the date the report was prepared;

c. Records of all data, including reports and documents, used to complete the application for the permit for at least three years from the date the application was filed;

d. Records of all disposal of vegetation and materials removed from intake screens and vegetation, sediments and sludge removed from wastewater and stormwater basins;

e. A copy of the current permit;

f. A copy of any required record drawings; and

g. Copies of the logs and schedules showing plant operations and equipment maintenance for three years from the date of the logs or schedules.

{62-620.350}

11

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025

3. During the period of operation authorized by this permit, the permittee shall, as part of its preventative maintenance program, review the structural integrity of all outfalls, including all outfalls which have been taken out of service, on an annual basis. All pipes no longer in service shall be either removed, capped, or filled. {62-620.320(6), F.A.C.]

VI. SCHEDULES I. A Best Management Practices Pollution Prevention (BMP3) Plan shall be prepared and implemented in accordance with Part VII of this permit and the following schedule:

Com letion Date I. Existin BMP3 Plan Issuance Date of Permit

{62-620.320(6)]

2. If the permittee wishes to continue operation of this wastewater facility after the expiration date of this permit, the permittee shall submit an application for renewal no later than one-hundred and eighty days ( 180) prior to the expiration date of this permit. Application shall be made using the appropriate forms listed in Rule 62-620.910, F.A.C., including submittal of the appropriate processing fee set forth in Rule 62-4.050, F.A.C. {62-620.335(1) and (2)]

3. The permittee shall notify the Southwest District Office and the Department's Tallahassee Wastewater Management Program within 30 days of the shutdown and cessation of discharge from an outfall.

VII. BEST MANAGEMENT PRACTICES/STORMWATER POLLUTION PREVENTION PLANS I. General Conditions In accordance with Section 304(e) and 402(a)(2) of the Clean Water Act (CWA) as amended, 33 U.S.C. §§ 125 l et seq., and the Pollution Prevention Act of 1990, 42 U.S.C. §§ 13101-13109, the permittee must develop and implement a plan for utilizing practices incorporating pollution prevention measures. References to be considered in developing the plan are "Criteria and Standards for Best Management Practices Authorized under Section 304(e) of the Act," found at 40 CFR 122.44 Subpart Kand the Storm Water Management Industrial Activities Guidance Manual, EPA/833-R92-002 and other EPA documents relating to Best Management Practice guidance.

a. Definitions (1) The term "pollutants" refers to conventional, non-conventional and toxic pollutants.

(2) Conventional pollutants are: biochemical oxygen demand (BOD), suspended solids, pH, fecal coliform bacteria and oil & grease.

(3) Non-conventional pollutants are those which are not defined as conventional or toxic.

(4) Toxic pollutants include, but are not limited to: (a) any toxic substance listed in Section 307(a)(l) of the CWA, any hazardous substance listed in Section 31 l of the CWA, or chemical listed in Section 3 l3(c) of the Superfund Amendments and Reauthorization Act of 1986; and (b) any substance (that is not also a conventional or non-conventional pollutant except ammonia) for which EPA has published an acute or chronic toxicity criterion.

(5) "Significant Materials" is defined as raw materials; fuels; materials such as solvents and detergents; hazardous substances designated under Section 101(14) ofCERCLA; and any chemical the facility is required to report pursuant to EPCRA, Section 313; fertilizers; pesticides; and waste products such as ashes, slag and sludge.

(6) "Pollution prevention" and "waste minimization" refer to the first two categories of EP A's preferred hazardous waste management strategy: first, source reduction and then, recycling.

(7) "Recycle/Reuse" is defined as the minimization of waste generation by recovering and reprocessing usable products that might otherwise become waste; or the reuse or reprocessing of usable waste products in place of the original stock, or for other purposes such as material recovery, material regeneration or energy production.

12

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February l l, 2025 (8) "Source reduction" means any practice which: (a) reduces the amount of any pollutant entering a waste stream or otherwise released into the environment (including fugitive emissions) prior to recycling, treatment or disposal; and (b) reduces the hazards to public health and the environment associated with the release of such pollutant. The term includes equipment or technology modifications, process or procedure modifications, reformulation or redesign of products, substitution ofraw materials, and improvements in housekeeping, maintenance, training, or inventory control. It does not include any practice which alters the physical, chemical, or biological characteristics or the volume of a pollutant through a process or activity which itself is not integral to, or previously considered necessary for, the production of a product or the providing of a service.

(9) "BMP3" means a Best Management Practices Pollution Prevention Plan incorporating the requirements of 40 CFR § 125, Subpart K, plus pollution prevention techniques, except where other existing programs are deemed equivalent by the permittee. The permittee shall certify the equivalency of the other referenced programs.

( 10) The term "material" refers to chemicals or chemical products used in any plant operation (i.e., caustic soda, hydrazine, degreasing agents, paint solvents, etc.). It does not include lumber, boxes, packing materials, etc.

( 11) The term "allowable non-storm water discharges" refers to the following discharges that may be discharged through storm water outfalls unless identified by the Department as sources of pollutants:

• Discharges from fire-fighting activities;

• Fire hydrant flushing;

• Potable water, including water line flushing;

• Uncontaminated condensate from air conditioners, coolers, and other compressors and from the outside storage of refrigerated gases or liquids;

• Irrigation drainage;

• Landscape watering provided all pesticides, herbicides and fertilizer have been applied in accordance with the approved labeling;

• Pavement wash waters where no detergents are used and no spills or leaks of toxic or hazardous materials have occurred (unless all spilled material has been removed);

• Routine external building washdown that does not use detergents;

• Uncontaminated ground water or spring water;

• Foundation or footing drains where flows are not contaminated with process materials; and Incidental wind-blown mist from cooling towers that collects on rooftops or adjacent portions of your facility, but not intentional discharges from the cooling tower (e.g. "piped" cooling tower blowdown or drains).

2. Best Management Practices/Pollution Prevention Plan The permittee shall develop and implement a BMP3 plan for the facility, which is the source of wastewater and storm water discharges, covered by this permit. The plan shall be directed toward reducing those pollutants of concern, including mercury, which discharge to surface waters and shall be prepared in accordance with good engineering and good housekeeping practices. For the purposes of this permit, pollutants of concern shall be limited to toxic pollutants, as defined above, known to the discharger. The plan shall address all activities which could or do contribute these pollutants to the surface water discharge, including process, treatment, and ancillary activities.

a. Signatory Authority & Management Responsibilities The BMP3 plan shall be signed by permittee or their duly authorized representative in accordance with rule 62-620.305(2)(a) and (b). The BMP3 plan shall be reviewed by plant environmental/engineering staff and plant manager. Where required by Chapter 471-(P.E.) or Chapter 492 (P.G.) Florida Statutes, applicable portions of the BMP3 plant shall be signed and sealed by the professional(s) who prepared them.

A copy of the plant shall be retained at the facility and shall be made available to the permit issuing authority upon request.

The BMP3 plan shall contain a written statement from corporate or plant management indicating management's commitment to the goals of the BMP3 program. Such statements shall be publicized or 13

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025 made known to all facility employees. Management shall also provide training for the individuals responsible for implementing the BMP3 plan.

b. BMP3 Plan Requirements (1) Name & description of facility, a map illustrating the location of the facility & adjacent receiving waters, and other maps, plot plans or drawings, as necessary; (2) Overall objectives (both short-term and long-term) and scope of the plan, specific reduction goals for pollutants, anticipated dates of achievement of reduction, and a description of means for achieving each reduction goal; (3) A description of procedures relative to spill prevention, control & countermeasures and a description of measures employed to prevent storm water contamination; (4) A description of practices involving preventive maintenance, housekeeping, recordkeeping, inspections, and plant security; and (5) The description ofa waste minimization assessment performed in accordance with the conditions outlined in condition c below, results of the assessment, and a schedule for implementation of specific waste reduction practices.

c. Waste Minimization Assessment The permittee is encouraged but not required to conduct A waste minimization assessment (WMA) for this facility to determine actions that could be taken to reduce waste loading and chemical losses to all wastewater and/or storm water streams as described in Part VII.D.2 of this permit.

If the permittee elects to develop and implement a WMA, information on plan components can be obtained forms the Department's Wastewater Management website, or from:

Florida Department of Environmental Protection Wastewater Management Program, Mail Station 3545 2600 Blair Stone Road Tallahassee, Florida 32399-2400 (850) 245-8589 (850) 245-8669 - Fax

d. Best Management Practices & Pollution Prevention Committee Recommended:

A Best Management Practices Committee (Committee) should be established to direct or assist in the implementation of the BMP3 plan. The Committee should be comprised of individuals within the plant organization who are responsible for developing the BMP3 plan and assisting the plant manager in its implementation, monitoring of success, and revision. The activities and responsibilities of the Committee should address all aspects of the facility's BMP3 plan. The scope ofresponsibilities of the Committee should be described in the plan.

e. Employee Training Employee training programs shall inform personnel at all levels of responsibility of the components &

goals of the BMP3 plan and shall describe employee responsibilities for implementing the plan. Training shall address topics such as good housekeeping, materials management, record keeping & reporting, spill prevention & response, as well as specific waste reduction practices to be employed. Training should also disclose how individual employees may contribute suggestions concerning the BMP3 plan or suggestions regarding Pollution Prevention. The plan shall identify periodic dates for such training.

f. Plan Development & Implementation The BMP3 plan shall be developed and implemented 6 months after the effective date of this permit, unless any later dates are specified in this permit. Any portion of the WMA which is ongoing at the time of development or implementation shall be described in the plan. Any waste reduction practice which is recommended for implementation over a period of time shall be identified in the plan, including a schedule for its implementation.

g. Submission of Plan Summary & Progress/Update Reports (1) Plan Summary: Not later than 2 years after the effective date of the permit, a summary of the BMP3 plan shall be developed and maintained at the facility and made available to the permit issuing 14

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 authority upon request. The summary should include the following: a brief description of the plan, its implementation process, and schedules for implementing identified waste reduction practices, and a list of all waste reduction practices being employed at the facility. The results of waste minimization assessment studies already completed as well as any scheduled or ongoing WMA studies shall be discussed.

(2) Progress/Update Reports: Annually thereafter for the duration of the permit progress/update reports documenting implementation of the plan shall be maintained at the facility and made available to the permit issuing authority upon request. The reports shall discuss whether or not implementation schedules were met and revise any schedules, as necessary. The plan shall also be updated as necessary and the attainment or progress made toward specific pollutant reduction targets documented. Results of any ongoing WMA studies as well as any additional schedules for implementation of waste reduction practices shall be included.

(3) A timetable for the various plan requirements follows:

Timetable for BMP3 Plan Requirements:

REQUIREMENT TIME FROM EFFECTIVE DA TE OF THIS PERMIT Progress/Update Reports 3 years, and then annually thereafter The permittee shall maintain the plan and subsequent reports at the facility and shall make the plan available to the Department upon request.

h. Plan Review & Modification If following review by the Department, the BMP3 plan is determined insufficient, the permittee will be notified that the BMP3 plan does not meet one or more of the minimum requirements of this Part. Upon such notification from the Department, the permittee shall amend the plan and shall submit to the Department a written certification that the requested changes have been made. Unless otherwise provided by the Department, the permittee shall have 30 days after such notification to make the changes necessary.

The permittee shall modify the BMP3 plan whenever there is a change in design, construction, operation, or maintenance, which has a significant effect on the potential for the discharge of pollutants to waters of the State or if the plan proves to be ineffective in achieving the general objectives of reducing pollutants in wastewater or storm water discharges. Modifications to the plan may be reviewed by the Department in the same manner as described above.

3. The permittee is authorized to discharge storm water and/or groundwater drained from secondary containment structures surrounding petroleum and bulk chemical storage areas, and from miscellaneous electrical and/or service vaults, provided the following conditions are met:

a. The facility shall have a valid SPCC Plan pursuant to 40 CFR 112.

b. Such activity shall be described in the BMP3 Plan/SWPPP, including references to existing facility procedures governing these draining activities.

c. In draining the secondary containments or vaults, a portable oil skimmer or similar device or absorbent material shall be used to remove oil and grease (as indicated by the presence of a sheen) immediately prior to draining. For bulk acid or caustic chemical storage containment areas, pH shall be checked prior to draining.

d. Monitoring records shall be maintained in the form of a log and shall contain the following information, at a minimum:

( 1) Date of discharge, (2) Initials of person making visual inspection and authorizing discharge, and (3) Observed conditions of storm water discharged.

e. There shall be no discharge of floating solids or visible foam in other than trace amounts and no discharge of a visible oil sheen at any time as a result of this activity, unless such drainage is directed to on-site industrial wastewater treatment facilities.

VIII. OTHER SPECIFIC CONDITIONS 15

PERM1TTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025 A. Specific Conditions Applicable to All Permits

1. Where required by Chapter 471 or Chapter 492, F.S., applicable portions of reports that must be submitted under this permit shall be signed and sealed by a professional engineer or a professional geologist, as appropriate. {62-620.310(4)]

2. Drawings, plans, documents or specifications submitted by the permittee, not attached hereto, but retained on file at the Department's Southwest District Office, are made a part hereof.

3. This permit satisfies Wastewater Management Program permitting requirements only and does not authorize operation of this facility prior to obtaining any other permits required by local, state or federal agencies.

4. The permittee shall provide verbal notice to the Department's Southwest District Office as soon as practical after discovery of a sinkhole or other karst feature within an area for the management or application of wastewater, or wastewater sludges. The permittee shall immediately implement measures appropriate to control the entry of contaminants, and shall detail these measures to the Department's Southwest District Office in a written report within 7 days of the sinkhole discovery. {62-620.320(6)]

B. Specific Conditions Related to Existing Manufacturing, Commercial, Mining, and Silviculture Wastewater Facilities or Activities

1. Existing manufacturing, commercial, mining, and silvicultural wastewater facilities or activities that discharge into surface waters shall notify the Department's Southwest District Office as soon as they know or have reason to believe:

a. That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following levels;

( 1) One hundred micrograms per liter, (2) Two hundred micrograms per liter for acrolein and acrylonitrile; five hundred micrograms per liter for 2, 4-dinitrophenol and for 2-methyl-4, 6-dinitrophenol; and one milligram per liter for antimony, or (3) Five times the maximum concentration value reported for that pollutant in the permit application; or

b. That any activity has occurred or will occur which would result in any discharge, on a non-routine or infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following levels; (1) Five hundred micrograms per liter, (2) One milligram per liter for antimony, or (3) Ten times the maximum concentration value reported for that pollutant in the permit application.

{62-620.625(1)]

C. Impoundment Design, Construction, Operation, and Maintenance

1. Impoundment integrity inspections and maintenance requirements are covered under Attachment H of Conditions of Certification (PA 77-09).

D. Duty to Reapply

1. The permittee is not authorized to discharge to waters of the State after the expiration date of this permit, unless:

a. the permittee has applied for renewal of this permit at least 180 days before the expiration date (August 15, 2024) using the appropriate forms listed in Rule 62-620.910, F.A.C., and in the manner established in the Department of Environmental Protection Guide to Permitting Wastewater Facilities or Activities Under Chapter 62-620, F.A.C., including submittal of the appropriate processing fee set forth in Rule 62-4.050, F.A.C.; or

b. the permittee has made complete the application for renewal of this permit before the permit expiration date.

16

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February l l, 2025

{62-620.335(1)-(4), F.A.C.]

2. When publishing Notice of Draft and Notice of Intent in accordance with Rules 62- l l 0.106 and 62-620.550, F.A.C., the permittee shall publish the notice at its expense in a newspaper of general circulation in the county or counties in which the activity is to take place either

a. Within thirty days after the permittee has received a notice; or

b. Within thirty days after final agency action.

Failure to publish a notice is a violation of this permit.

E. Reopener Clauses I. The permit shall be revised, or alternatively, revoked and reissued in accordance with the provisions contained in Rules62-620.325 and 62-620.345 F.A.C., if applicable, or to comply with any applicable effluent standard or limitation issued or approved under Sections 30l{b)(2)(C) and (D), 304(b)(2) and 307(a)(2) of the Clean Water Act (the Act), as amended, if the effluent standards, limitations, or water quality standards so issued or approved:

a. Contains different conditions or is otherwise more stringent than any condition in the permit/or;

b. Controls any pollutant not addressed in the permit.

The permit as revised or reissued under this paragraph shall contain any other requirements then applicable.

2. The permit may be reopened to adjust effluent limitations or monitoring requirements if a need for different or more stringent limitations or monitoring requirements is shown, based on

a. Water Quality Based Effluent Limitation (WQBEL) determinations;

b. DEP or EPA approved changes in water quality standards;

c. DEP or EPA established Total Maximum Daily Loads (TMDLs);

d. Basin Management Action Plans (BMAPs); or Other water quality studies or information.

3. The Department or EPA may develop a TMDL during the life of the permit. Once a TMDL has been established and adopted by rule, the Department shall revise this permit to incorporate the final findings of the TMDL.

4. The permit shall be reopened for revision as appropriate to address new information that was not available at the time of this permit issuance or to comply with requirements ofnew regulations, standards, or judicial decisions relating to CW A 3 l 6(b ).

5. The permit may be reopened to implement the revised Effluent Limitations Guidelines and Standards (ELGS) for the Steam Electric Power Generating category (40 CFR 423) in the event the EPA adopts new compliance deadlines or further revisions to the rule.

6. The permit may be reopened to incorporate more stringent requirements or any applicable standards pertaining to the operation and maintenance of coal combustion waste impoundments.

F. Specific Conditions Related to Preservation of State Historical Resources I. If prehistoric or historic artifacts, such as pottery or ceramics, projectile points, dugout canoes, metal implements, historic building materials, or any other physical remains that could be associated with Native American, early European, or American settlement are discovered at any time within the project site area, the permittee shall immediately notify the Florida Department of State, Division of Historical Resources, Compliance Review Section at (850)245-6333, to determine appropriate action.

17

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025

2. In the event that unmarked human remains are encountered during permitted activities, all work shall stop immediately and the proper authorities notified in accordance with Section 872.05, Florida Statutes.

G. Other Noncompliance Reporting Requirements

1. Report of noncompliance events related to sanitary sewer overflows or bypass events must include the data described in Permit Condition IX.20 (with the exception of time of discovery) as well as the type of event (sanitary sewer overflows or bypass events), type of sewer overflow ( e.g., manhole), discharge volumes by the treatment works treating domestic sewage, types of human health and environmental impacts of the sewer overflow event, and whether the noncompliance was related to wet weather. The written submission may be provided electronically using the Department's Business Portal at http://www.tldepportal.com/go/ (via "Submit" followed by "Report" or "Registration/Notification"). Notice required under Permit Condition VIII.G.2 below may be provided together with the written submission using the Business Portal. All noncompliance events related to sanitary sewer overflows or bypass events submitted after December 21 , 2020 shall be submitted electronically.

{62-620.100(3)} [403.077, F.S.}

2. In accordance with Section 403.077, F.S., unauthorized releases or spills reportable to the State Watch Office pursuant to Permit Condition IX.20.b. l. shall also be reported to the Department within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from the time the permittee becomes aware of the discharge. The permittee shall provide to the Department information reported to the State Watch Office. Notice of unauthorized releases or spills may be provided to the Department through the Department's Public Notice of Pollution web page at https://tloridadep.gov/pollutionnotice.

a. If, after providing notice pursuant to paragraph 2 above, the permittee determines that a reportable unauthorized release or spill did not occur or that an amendment to the notice is warranted, the permittee may submit additional notice to the Department documenting such determination.

b. If, after providing notice pursuant to paragraph 2 above, the permittee discovers that a reportable unauthorized release or spill has migrated outside the property boundaries of the installation, the permittee must provide an additional notice to the Department that the release has migrated outside the property boundaries within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after its discovery of the migration outside of the property boundaries.

[62-620.100(3)} {403.077, F.S.J IX. GENERAL CONDITIONS

1. The terms, conditions, requirements, limitations and restrictions set forth in this permit are binding and enforceable pursuant to Chapter 403, Florida Statutes. Any permit noncompliance constitutes a violation of Chapter 403, Florida Statutes, and is grounds for enforcement action, permit termination, permit revocation and reissuance, or permit revision. [62-620.610(1)]

2. This permit is valid only for the specific processes and operations applied for and indicated in the approved drawings or exhibits. Any unauthorized deviations from the approved drawings, exhibits, specifications or conditions of this permit constitutes grounds for revocation and enforcement action by the Department. {62-620.610(2)}

3. As provided in subsection 403.087(7), F.S., the issuance of this permit does not convey any vested rights or any exclusive privileges. Neither does it authorize any injury to public or private property or any invasion of personal rights, nor authorize any infringement of federal, state, or local laws or regulations. This permit is not a waiver of or approval of any other Department permit or authorization that may be required for other aspects of the total project which are not addressed in this permit. [62-620.610(3)}

4. This permit conveys no title to land or water, does not constitute state recognition or acknowledgment of title, and does not constitute authority for the use of submerged lands unless herein provided and the necessary title or leasehold interests have been obtained from the State. Only the Trustees of the Internal Improvement Trust Fund may express State opinion as to title. [62-620.610(4)]

5. This permit does not relieve the permittee from liability and penalties for harm or injury to human health or welfare, animal or plant life, or property caused by the construction or operation of this permitted source; nor 18

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 does it allow the permittee to cause pollution in contravention of Florida Statutes and Department rules, unless specifically authorized by an order from the Department. The permittee shall take all reasonable steps to minimize or prevent any discharge, reuse of reclaimed water, or residuals use or disposal in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment. It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. {62-620.610(5)]

6. If the permittee wishes to continue an activity regulated by this permit after its expiration date, the permittee shall apply for and obtain a new permit. {62-620.610(6)]

7. The permittee shall at all times properly operate and maintain the facility and systems of treatment and control, and related appurtenances, that are installed and used by the permittee to achieve compliance with the conditions of this permit. This provision includes the operation of backup or auxiliary facilities or similar systems when necessary to maintain or achieve compliance with the conditions of the permit. {62-620.610(7)]

8. This permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the permittee for a permit revision, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any permit condition. {62-620.610(8)]

9. The permittee, by accepting this permit, specifically agrees to allow authorized Department personnel, including an authorized representative of the Department and authorized EPA personnel, when applicable, upon presentation of credentials or other documents as may be required by law, and at reasonable times, depending upon the nature of the concern being investigated, to:

a. Enter upon the permittee's premises where a regulated facility, system, or activity is located or conducted, or where records shall be kept under the conditions of this permit;

b. Have access to and copy any records that shall be kept under the conditions of this permit;

c. Inspect the facilities, equipment, practices, or operations regulated or required under this permit; and

d. Sample or monitor any substances or parameters at any location necessary to assure compliance with this permit or Department rules.

{62-620.610(9)]

10. In accepting this permit, the permittee understands and agrees that all records, notes, monitoring data, and other information relating to the construction or operation of this permitted source which are submitted to the Department may be used by the Department as evidence in any enforcement case involving the permitted source arising under the Florida Statutes or Department rules, except as such use is proscribed by Section 403.111, F.S., or Rule 62-620.302, F.A.C. Such evidence shall only be used to the extent that it is consistent with the Florida Rules of Civil Procedure and applicable evidentiary rules. {62-620.610(10)]

11. When requested by the Department, the permittee shall within a reasonable time provide any information required by law which is needed to determine whether there is cause for revising, revoking and reissuing, or terminating this permit, or to determine compliance with the permit. The permittee shall also provide to the Department upon request copies ofrecords required by this permit to be kept. If the permittee becomes aware of relevant facts that were not submitted or were incorrect in the permit application or in any report to the Department, such facts or information shall be promptly submitted or corrections promptly reported to the Department {62-620.610(1 l)j

12. Unless specifically stated otherwise in Department rules, the permittee, in accepting this permit, agrees to comply with changes in Department rules and Florida Statutes after a reasonable time for compliance; provided, however, the permittee does not waive any other rights granted by Florida Statutes or Department rules. A reasonable time for compliance with a new or amended surface water quality standard, other than those standards addressed in Rule 62-302.500, F.A.C., shall include a reasonable time to obtain or be denied a mixing zone for the new or amended standard. {62-620.610(12)]

19

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025

13. The permittee, in accepting this permit, agrees to pay the applicable regulatory program and surveillance fee in accordance with Rule 62-4.052, F .A.C. {62-620.610(13)]

14. This permit is transferable only upon Department approval in accordance with Rule 62-620.340, F.A.C. The permittee shall be liable for any noncompliance of the permitted activity until the transfer is approved by the Department {62-620.610(14)]

15. The permittee shall give the Department written notice at least 60 days before inactivation or abandonment of a wastewater facility or activity and shall specify what steps will be taken to safeguard public health and safety during and following inactivation or abandonment. {62-620.610(15)]

16. The permittee shall apply for a revision to the Department permit in accordance with Rules62-620.300, F.A.C.,

and the Department of Environmental Protection Guide to Permitting Wastewater Facilities or Activities Under Chapter 62-620, F .A.C., at least 90 days before construction of any planned substantial modifications to the permitted facility is to commence or with Rule 62-620.325(2), F.A.C., for minor modifications to the permitted facility. A revised permit shall be obtained before construction begins except as provided in Rule 62-620.300, F.A.C. {62-620.610(16)]

17. The permittee shall give advance notice to the Department of any planned changes in the permitted facility or activity which may result in noncompliance with permit requirements. The permittee shall be responsible for any and all damages which may result from the changes and may be subject to enforcement action by the Department for penalties or revocation of this permit. The notice shall include the following information:

a. A description of the anticipated noncompliance;

b. The period of the anticipated noncompliance, including dates and times; and

c. Steps being taken to prevent future occurrence of the noncompliance.

[62-620.610(17)]

18. Sampling and monitoring data shall be collected and analyzed in accordance with Rule 62-4.246 and Chapters62-160, 62-601, and 62-610, F.A.C., and 40 CFR 136, as appropriate.

a. Monitoring results shall be reported at the intervals specified elsewhere in this permit and shall be reported on a Discharge Monitoring Report (DMR), DEP Form 62-620.910(10), or as specified elsewhere in the permit.

b. If the permittee monitors any contaminant more frequently than required by the permit, using Department approved test procedures, the results of this monitoring shall be included in the calculation and reporting of the data submitted in the DMR.

c. Calculations for all limitations which require averaging of measurements shall use an arithmetic mean unless otherwise specified in this permit.

d. Except as specifically provided in Rule 62-160.300, F.A.C., any laboratory test required by this permit shall be performed by a laboratory that has been certified by the Department of Health Environmental Laboratory Certification Program (DOH ELCP). Such certification shall be for the matrix, test method and analyte(s) being measured to comply with this permit. For domestic wastewater facilities, testing for parameters listed in Rule 62-160 .300(4 ), F .A.C., shall be conducted under the direction of a certified operator.

e. Field activities including on-site tests and sample collection shall follow the applicable standard operating procedures described in DEP-SOP-001/01 adopted by reference in Chapter 62-160, F.A.C.

f. Alternate field procedures and laboratory methods may be used where they have been approved in accordance with Rules62-160.220, and 62-160.330, F.A.C.

{62-620. 610(18)]

19. Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule detailed elsewhere in this permit shall be submitted no later than 14 days following each schedule date. {62-620.610(19)]

20

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025

20. The permittee shall report to the Department's Southwest District Office any noncompliance which may endanger health or the environment. Any information shall be provided orally within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from the time the permittee becomes aware of the circumstances. A written submission shall also be provided within five days of the time the permittee becomes aware of the circumstances. The written submission shall contain: a description of the noncompliance and its cause; the period of noncompliance including exact dates and time, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent recurrence of the noncompliance.

a. The following shall be included as information which must be reported within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> under this condition:

(1) Any unanticipated bypass which causes any reclaimed water or effluent to exceed any permit limitation or results in an unpermitted discharge, (2) Any upset which causes any reclaimed water or the effluent to exceed any limitation in the permit, (3) Violation of a maximum daily discharge limitation for any of the pollutants specifically listed in the permit for such notice, and (4) Any unauthorized discharge to surface or ground waters.

b. Oral reports as required by this subsection shall be provided as follows:

(1) For unauthorized releases or spills of treated or untreated wastewater reported pursuant to subparagraph (a)4. that are in excess of 1,000 gallons per incident, or where information indicates that public health or the environment will be endangered, oral reports shall be provided to the ST ATE WATCH OFFICE TOLL FREE NUMBER (800) 320-0519, as soon as practical, but no later than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from the time the permittee becomes aware of the discharge. The permittee, to the extent known, shall provide the following information to the State Watch Office:

(a) Name, address, and telephone number of person reporting; (b) Name, address, and telephone number of permittee or responsible person for the discharge; (c) Date and time of the discharge and status of discharge (ongoing or ceased);

(d) Characteristics of the wastewater spilled or released (untreated or treated, industrial or domestic wastewater);

(e) Estimated amount of the discharge; (f) Location or address of the discharge; (g) Source and cause of the discharge; (h) Whether the discharge was contained on-site, and cleanup actions taken to date; (i) Description of area affected by the discharge, including name of water body affected, if any; and (i) Other persons or agencies contacted.

(2) Oral reports, not otherwise required to be provided pursuant to subparagraph b. l above, shall be provided to the Department's Wastewater Management Program within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from the time the permittee becomes aware of the circumstances.

c. If the oral report has been received within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the noncompliance has been corrected, and the noncompliance did not endanger health or the environment, the Department's Wastewater Management Program shall waive the written report.

{62-620. 610(20)}

21. The permittee shall report all instances of noncompliance not reported under Permit Conditions IX.17, 18 or 19 of this permit at the time monitoring reports are submitted. This report shall contain the same information required by Permit Condition IX.20 of this permit. {62-620.610(21)]

22. Bypass Provisions.

a. "Bypass" means the intentional diversion of waste streams from any portion of a treatment works.

b. Bypass is prohibited, and the Department may take enforcement action against a permittee for bypass, unless the permittee affirmatively demonstrates that:

(1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage; and (2) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable 21

PERMITTEE: Duke Energy Florida, Inc. PERMIT NUMBER: FL0A00004 (Major)

FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11, 2025 engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and (3) The permittee submitted notices as required under Permit Condition IX.22.c. of this permit.

c. If the permittee knows in advance of the need for a bypass, it shall submit prior notice to the Department, if possible at least 10 days before the date of the bypass. The permittee shall submit notice of an unanticipated bypass within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of learning about the bypass as required in Permit Condition IX.20. of this permit. A notice shall include a description of the bypass and its cause; the period of the bypass, including exact dates and times; if the bypass has not been corrected, the anticipated time it is expected to continue; and the steps taken or planned to reduce, eliminate, and prevent recurrence of the bypass.

d. The Department shall approve an anticipated bypass, after considering its adverse effect, if the permittee demonstrates that it will meet the three conditions listed in Permit Condition IX.22.b. l through 3 of this permit.

e. A permittee may allow any bypass to occur which does not cause reclaimed water or effluent limitations to be exceeded if it is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions of Permit Condition IX.22.b. through d. of this permit.

[62-620. 610(22)}

23. Upset Provisions.

a. "Upset" means an exceptional incident in which there is unintentional and temporary noncompliance with technology-based effluent limitations because of factors beyond the reasonable control of the permittee.

( 1) An upset does not include noncompliance caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, careless or improper operation.

(2) An upset constitutes an affirmative defense to an action brought for noncompliance with technology based permit effluent limitations if the requirements of upset provisions of Rule 62-620.610, F.A.C., are met.

b. A permittee who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed contemporaneous operating logs, or other relevant evidence that:

( 1) An upset occurred and that the permittee can identify the cause(s) of the upset; (2) The permitted facility was at the time being properly operated; (3) The permittee submitted notice of the upset as required in Permit Condition IX.20. of this permit; and (4) The permittee complied with any remedial measures required under Permit Condition IX.20. of this permit.

c. In any enforcement proceeding, the burden of proof for establishing the occurrence of an upset rests with the permittee.

d. Before an enforcement proceeding is instituted, no representation made during the Department review of a claim that noncompliance was caused by an upset is final agency action subject to judicial review.

[62-620. 610(23)}

Executed in Tallahassee, Florida.

STATE OF FLORIDA DEPARTMENTOF ENVIRONMENT AL PROTECTION Marc H. Harris, P.E.

Program Administrator Wastewater Management Program Division of Water Resource Management 22

FACT SHEET FOR STA TE OF FLORIDA INDUSTRIAL WASTEWATER FACILITY PERMIT PERMIT NUMBER: FL0A00004-001 (Major)

FACILITY NAME: Crystal River Unit 3 FACILITY LOCATION: 15760 West Power Line Street, Crystal River, FL 34428 Citrus County NAME OF PERMITTEE: Duke Energy Florida (DEF)

PERMIT WRITER: Frank Wall I.

SUMMARY

OF APPLICATION Addendum to Factsheet Section VII (Best Management Practices (BMPs) Plan (Plan)) was replaced with Best Management Practices/Stormwater Pollution Prevention Plans (SWPPP) language that Unit 3 was previously permitted under permit No. FL0000J 59.

Because the facility has a separate Multi-Sector Generic Permit (MSGP) which requires the facility to develop and maintain a SWPPP, therefore, the facility is only required to maintain the existing Best Management Practices Pollution Prevention (BMP3) Plan under this permit. Schedule Item 1 was also revised to reflect the change described above.

Section V/1.G., "Other Noncompliance Reporting Requirements", was created to include additional reporting requirements pursuant to Rule 62-620.100(3), Florida Administrative Code (F.A. C.), and 403. 077 Florida Statutes (F.S.).

General permit condition IX20 which contained these requirements was replaced with the previously permitted general condition IX20 ofpermit No. FL0000J 59 under which Unit 3 was previously permitted.

a. Purpose This is an application for a new National Pollutant Discharge Elimination System (NPDES) industrial wastewater discharge permit for Unit 3, permit No. FL0A00004. Unit 3 was previously permitted under the Crystal River Units I, 2 and 3; and Citrus Combined Cycle Units PB-1 & PB-2, permit No. FL0000 159, for which the renewal application was submitted October 8, 2018. Information submitted with the renewal application including additional information was used for permitting of the Crystal River Unit 3.

b. Chronology of Application Application Number: FL0A00004-001-IW l S Application Submittal Date: June 12, 2019 Additional Information Received: July 8, 9, 10, 26, August l, 9, 23, September 10, 2019 The following additional information dates were submitted for permit No. FL0000 159: October 2,3, 15, 19, December 3, 5, 13, 2018; January 21, February 8, 25, March 4, 11, 12, May 29, 2019. Information was submitted for permitting of Unit 3 as described above.

Notice of Draft: November 8, 2019 (issued); November 13, 2019 (published)

Notice of Intent: December 27, 2019 (issued); December 31, 2019 (published)

c. Facility Description Page 1

The Crystal River Energy Complex (CREC) is an electric generating plant located on an approximately 4,729 acre site near the mouth of Crystal River. The CREC formerly consisted of five steam electric generating units (Units I, 2, 3, 4 and 5) with a total nameplate rating of 3,333.1 megawatts (MW). Units I and 2 were retired in 2018. Units I and 2 were pulverized coal-fired steam electric generating units and Unit 3 was a nuclear fueled electric generating unit. Unit 3 was shut down in September 2009, and retired on February 5, 2013. Units I and 2 had a combined total name plate rating of approximately 964 MW. Unit 3 had a name plate rating of approximately 860 MW. The surface water discharges from the Citrus Combined Cycle (CCC) Station are regulated under a separate wastewater permit (NPDES Permit No. FL0000l59). The surface water discharges from Units 4 and 5, including outfalls and monitoring locations previously associated with Units I and 2, are regulated under a separate wastewater permit (NPDES Permit No. FL0036366). Operation of a domestic and industrial wastewater treatment and disposal system to serve the facility is regulated under the Florida Electrical Power Plant Siting Act (License No. PA77-09).

The radioactive component of the discharge is regulated by the U.S. Nuclear Regulatory Commission (NRC) under Atomic Energy Act (AEA) and not by the U.S. Environmental Protection Agency (EPA) under the Clean Water Act (CWA).

Unit 3 was placed into operation in 1977.

d. Description of Wastewater Treatment With the retirement of Unit 3 on February 5, 2013, the unit no longer discharges once-through noncontact cooling water (OTCW) from outfall D-013. Unit 3 has not discharged OTCW since September 2009.

The site discharge canal serves Unit 3, CCC, and Units 4 & 5 which discharge under separate wastewater permits.

The site discharge canal discharges to Crystal Bay, which is part of the GulfofMexico, and is a Class II marine surface water.

The Unit 3 Raw Water (RW) system discharge, Station Drain Tank-I (SOT-I) system (non-radwaste treatment system), and Evaporator Condensate Storage Tanks (ECST) system (radwaste treatment system will remain in operation due to the continued operation of ancillary processes. The process wastewaters generated by these systems will continue to be discharged from Outfall D-00F. An additional system was added to support SAFSTOR II operation that will discharge to Outfall D-00F.

Raw Water System Discharge: The RW system is water pumped from the intake canal to the plant that discharges through Outfall D-00F. The water collected is from internal outfall 1-FG, SAFESTOR II System, and ECST.

Station Drain Tank 1 system: The SOT-I is a regeneration waste neutralization tank or secondary drain Tank I.

The system uses neutralization and oil-water separation to control oil and grease as required, prior to discharge through internal outfall 1-FG, it is isolated and sampled for treatment or batch release. The treated wastewater is then discharged by batch releases through internal outfall 1-FG into the RW system to outfall D-00F, or alternatively to the on-site industrial wastewater percolation ponds under License No. PA 77-09 or routed to discharge through the ECST outfall. The waste streams treated in this system include the following low volume waste streams: building floor drains, equipment drains laboratory drains, rain water intrusion, and system leakage and testing.

Evaporator Condensate Storage Tanks system: The ECST system uses filtration and ion exchange system for pollution control as required. Spent resins are sluiced to a spent resin storage tank along with other spent resins (e.g.,

those used to polish water used for the spent fuel pool), whereby they are then disposed off-site. The treated sluice water is then discharged by batch releases through outfall D-00F. Wastewater is pumped to the Miscellaneous Waste Storage Tank that also receives stream from the reactor building sump.

The ECST system consists of two tanks in the Auxiliary Building that collects wastewater from low volume wastes:

floor drain, laboratories drain, system leakage, ion exchange resin sluice water, and cleaning activities.

Note, these wastewaters are required to be monitored and meet limits for several radionuclides in accordance with the U.S. NRC under AEA and not by the U.S. EPA under the CWA.

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SAFSTOR II System: In July 2019, Unit 3 began operation in SAFSTOR II mode. Wastewater consisting primarily of contact stonnwater, groundwater, and seawater from the reactor, auxiliary, and turbine building sumps, and other miscellaneous sumps will be collected in a collection tank. Treatment includes neutralization and oi l/water separation as needed. Recirculated wastewater from the collection tank receives additional treatment via filtration as needed.

The wastewater from the collection tank is batch discharged through outfall D-00F. Note, these wastewaters are required to be monitored and meet limits for several radionuclides in accordance with the U.S. NRC under AEA and not by the U.S. EPA under the CWA.

e. Primary Regulatory Requirements Standard Industrial Classification (SIC) Code: 4911 - Electrical Generation.

North American Industry Classification System (NAICS): 221112 - Fossil Fuel Electric Power Generation.

316(a): The facility does not have a thennal discharge and is not subject to Section 316(a) of the CWA. Unit 3 was retired as described above, cooling water is not used for the unit, and discharge temperatures are expected to be at ambient intake temperatures.

316(b): The facility intennittently withdraws intake water for augmentation of collection tank discharges to the discharge canal. No portion of the intake water is used for cooling hence the facility is not subject to Section 316(b) of the CWA. Unit 3 was retired as described above. The water is withdrawn from the CCC intake structure which is in compliance with 3 l 6{b ).

ELGS: The facility is subject to the Effluent Limitations Guidelines and Standards {ELGS) for the Steam Electric Power Generating Point Source Category (40 CFR Part 423 ).

Facility Capacity Existing Permitted Capacity: 1.584 MGD Daily Maximum Design Flow (1100 gpm)

Proposed Increase in Capacity: 0 MGD Daily Maximum Flow Proposed Total Pennitted Capacity: 1.584 MGD Daily Maximum Flow The design intake flow rate for raw water pump #6 (RWP-6) is 1100 gpm. The design intake flow rate for the new SAFSTOR II pump is 40 gpm (0.058 MGD).

2.

SUMMARY

OF SURFACE WATER DISCHARGE This pennit does not authorize any new or expanded discharges to surface waters.

The Department does not anticipate adverse impacts on threatened or endangered species as a result ofpennit issuance.

Monitoring Group D-00F: An existing intermittent discharge ofRW system and ancillary water effluent to the CREC main discharge canal and thence to the Gulf of Mexico Water Body Identification Data ((WBID) 8039), a Class II Marine Water.

Pollutants which are present in significant quantities or which are subject to effluent limitations are as follows:

Parameter Units Max/Min Reported Value Statistical Basis Flow MGD Max 1.58 (RWP-6) Daily Maximum 0.058 (SAFSTOR II)

Temperature, Water (Winter) Dee:F Max -- Dailv Maximum Temperature, Water (Summer) Dee:F Max 98.96 Dailv Maximum Oil and Grease me:/L Max < 1.1 Dailv Maximum Total Suspended solids me:/L Max 28.5 Dailv Maximum pH s.u. Max 7.27 Dailv Maximum Page3

Parameter Units Max/Min Re orted Value Statistical Basis Min 7.27 Dail Minimum Monitoring Group 1-FG: An existing intennittent discharge from the regeneration waste neutralization tank to Outfall D-00F.

Pollutants which are present in significant quantities or which are subject to effluent limitations are as follows:

Parameter Units Max/Min Reported Statistical Basis Value Flow MGD Max 0.091 Daily Maximum Oil and Grease miuL Max 5.1 Dailv Maximum Solids. Total Suspended miuL Max 26.5 Dailv Maximum pH s.u. Max 9.36 Dailv Maximum Min 7.48 Dailv Minimum

3. BASIS FOR PERMIT LIMITATIONS AND MONITORING REQUIREMENTS This facility is authorized to discharge RW system and ancillary water effluent from Outfall D-00F (Includes Outfall I-FG) to the Gulf of Mexico based on the following:

Parameter Units TBEL WQBEL Permit Limit Rationale Daily Monthly Daily Monthly Daily Monthly Max Averae:e Max Averae:e Max Avcrae:e Flow(RW) MOD NA NA NA NA Report Report 308(a) CWA and 62-620 320(6), F.A C Flow (ECST or SAFSTOR MOD NA NA NA NA Report Report 308(a) CWA and 62-620 320(6), F.A C Collection Tank\

Oil and Grease (ECST or mg/L NIA NIA 50 50 50 5.0 62-302 530(92)(a), F.A,C.

SAFSTOR Collection Tank)

[D-00Fl Total Suspended Solids mg/L 100 0 300 NIA NIA 1000 30 0 40 CFR 423. 12(b)(3),62-620.320(6),

(ECST or SAFSTOR FAC Collect10n Tank) [D-00Fl Number of batches # NA NA NA NA Report Report 62-620 320(6). F.A.C.

pH s u. NIA NIA 85 65 85 6.5 62-302 530(96)(b), F.A C.

(Dav Min) (Dav.Min)

Acute Whole Effluent percent NIA NIA 100 NIA 100 NIA 62-302 .530(20) and (61), 62-4 24l(l)(b),

Toxicity, 96 Hour LC50 (Min.) (Min.)62-620.620(3), F.A.C.

(Menidia bervllina)

Acute Whole Effluent percent NIA NIA 100 NIA 100 NIA 62-302.530(20) and (61 ), 62-4 241( I )(b).

Toxicity, 96 Hour LC50 (Mm) (Mm)62-620 620(3), FA C (Americamysis (Mysidopsis) bahia\

This facility is authorized to discharge Regeneration Waste Neutralization Tank wastewater from Internal Outfall 1-FG to Outfall D-00F based on the following:

Parameter Units TBEL WQBEL Permit Limit Rationale Daily Monthly Daily Monthly Daily Monthly Max Averae:e Max Averae:e Max Averae:e Flow(MGD) MOD NIA NIA NIA NIA Report Report 308(al CWA and 62-620 320(6). F.A C 01I and Grease ml!/L 20 0 15.0 NIA NIA 20 0 15 .0 40 CFR 423 12(b)(3)

Total Suspended Solids ml!/L 100.0 30.0 NIA NIA 100.0 30.0 40 CFR 423.12/b\/3\

pH SU 9.0 6.0 NIA NIA 90 60 40 CFR 423 12/b \/1\

No. Of Batches # NIA NIA NIA NIA Report Report 62-620.320(6), F.A C Reasonable Assurance Page4

The permittee has provided reasonable assurance that the discharges to Waters of the State from the site will neither cause nor contribute to an exceedance of water quality standards (WQS) nor cause non-attainment of specified designated uses of the receiving waters. Inspection data, as well as all other available data, have been evaluated in accordance with the Department's reasonable assurance procedures to ensure that no limits other than those included in this permit are needed.

Water Quality Effluent Limitation (WOBEL} and Technically-Based Effluent Limitation <TBEL} Considerations Effluent limitations were determined based on an evaluation of the impact of the discharge on the receiving bodies. This evaluation was conducted in accordance with the Level I WQBEL process described in Rule 62-650.400, F.A.C.

When developing permit limitations, the Department applies both technology-based and water quality-based permit requirements. When both may apply, permit limitations are chosen by whichever is more stringent. Criteria and standards for the inclusion of technology-based requirements in permits are described in 40 CFR Part 125, Subpart A, adopted by the Department in Rule 62-620.100(3)(h), F.A.C.

Technology-based requirements represent the minimum level of control that must be imposed to meet best practicable control technology currently available (BPT) for certain conventional pollutants, best conventional control technology (BCT) for conventional pollutants, and best available technology economically achievable (BAT) for toxic and non-conventional pollutants. Effluent limitations guidelines for the Steam Electric Power Generating Point Source Category are found at 40 C.F.R. Part 423, adopted by the Department in Rule 62-660.400(1)(e), F.A.C.

Water quality-based effluent limitations are required in NPDES permits when the Department determines that limits more stringent than technology-based limits are necessary to maintain or achieve state WQS. WQS provide a classification for all the water bodies in the state along with their designated uses and designates numeric and narrative water quality criteria that the water bodies in each classification should be able to achieve. NPDES permit limitations are derived to ensure that discharges and cooling water withdrawals do not cause a violation of these standards.

For each effluent limitation included in the permit, technology and water quality-based limitations were compared and the most stringent limitation was selected. The evaluation can be seen in the tables located above. In addition, all applicable federal rules regarding NPDES facilities were reviewed and incorporated into the draft permit, as described below.

4. BASIS FOR SPECIFIC PERMIT CONDITIONS

a. 316(b} Demonstration The facility intermittently withdraws intake water for augmentation of collection tank discharges to the discharge canal. No portion of the intake water is used for cooling hence the facility is not subject to Section 316(b) of the CWA. Unit 3 was retired as described in section I above. The design intake flow rate for raw water pump #6 (RWP-

6) is 1100 gpm. The design intake flow rate for the new SAFSTOR II pump is 40 gpm (0.058 MGD). The water is withdrawn from the CCC intake structure which is in compliance with 316(b).

b. Thermal Considerations Unit 3 was shutdown then retired as described in section I above, henceforth the unit no longer discharged heated OTCW from Outfall D-013. The intermittent discharges through Outfall D-00F are expected to be at ambient conditions.

c. Impaired Water Considerations Receiving Waters Although the facility is physically located within WBID 1339 (Group Withlacoochee) Cedar-Salt Creek, the direct receiving water is WBID 8039, GulfofMexico (Group Springs Coast, Segment Crystal Offshore), a Class II Marine Water. The intake canal withdraws water from WBID 8039 and the facility intermittently withdraws intake water for augmentation of collection tank discharges to the discharge canal which flows back to WBID 8039. Surface water from WBID 1339 is not associated with industrial wastewater discharge from the facility.

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WBID 8039 is on the current (August 2018) Comprehensive Verified List as impaired for fecal coliforms and bacteria. This waterbody is impaired for fecal coliforms based on the number of exceedances for the sample size and will remain on the 303(d) List. WBID 8039 is on the Comprehensive Delist List for mercury.

Domestic wastewater from Unit 3 is treated as follows: domestic wastewater from the Security Operations Center on the ISFSI pad is treated by Crystal River Units 4 &5 as authorized by the Conditions of Certification PA 77-09, and from all other Unit 3 areas is treated by the Crystal River Units l, 2, and 3 Sewage Treatment Plant as authorized by Domestic Wastewater Facility Permit FLAl 18753. The effluent is land applied through two-cell Rapid Infiltration Basins (RIB). Therefore, surface water discharges from the Unit 3 facility is not a source of bacteria nor fecal coliforms associated with domestic wastewater.

Numeric Nutrient Criteria (NNC}

Direct Receiving Water The receiving waters are also subject to the estuary NNC for Springs Coast Estuary (Crystal River to Anclote River) in 62-302.532 (l)(w), F.A.C. For estuary segments with criteria expressed as annual geometric means (AGM), the values shall not be exceeded more than once in a three year period. The segment, Crystal Offshore (62-302.532

( I )(w)7., F.A.C.), has the following criteria for total phosphorus (TP), total nitrogen (TN), and chlorophyll a (Chi a):

I Crystal Offshore I TP = 0.034 mg/Las AGM I TN = 0.40 mg/Las AGM I Chi a= 2.4 µg/L as AGM I It is important to note, however, that these estuary NNC represent area-wide AGMs over the entire estuary segment and are not intended to be used as end-of-pipe effluent limitations. Moreover, discharge from the facility is not considered a significant source of nutrients to the receiving waters.

Downstream Receiving Water (Withlacoochee Offshore and Homosassa Offshore)

Downstream WBID 8038C, Withlacoochee Offshore, a Class II marine water, is subject to 62-302.532(l)(v)3.,

F.A.C. WBID 8038C is on the current Comprehensive Verified List as impaired for fecal coliform, chlorophyll a, and total nitrogen.

Downstream WBID 8040, Homosassa Offshore, a Class II marine water, is subject to 62-302.532(l)(w)9., F.A.C.

WBID 8040 is on the current Comprehensive Verified List as impaired for bacteria.

Based on retirement of Unit 3 as described in section l above, the intermittent augmentation wastewater discharges through D-00F, and the facility indicating that no chemicals are used, the facility does not have a reasonable potential to cause or contribute to an exceedance in direct or downstream receiving waters of the NNC or narrative nutrient criterion in Chapter 62-302, F.A.C.

Mercury A Statewide Mercury Total Maximum Daily Load (TMDL) has been adopted in Rule 62-304.900, F.A.C. The TMDL requires industrial facilities with quantifiable mercury (total) levels in their effluent to prepare and implement a mercury minimization plan addressing sources of mercury (total) within the facility, which was included as a requirement for the Best Management Practices Plan located in Section Vil of the permit.

d. Revised Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category (40 CFR Part 423}

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On November 17, 2015, EPA published the final revised rule for Effluent Limitations Guidelines and Standards (ELGS) for the Steam Electric Power Generating Point Source Category (40 CFR Part 423). The revised rule establishes new limitations for both existing and new generating units for various waste streams that were previously considered low volume wastes under the prior rule. The waste streams included in the revised rule are flue gas desulfurization (FGD), flue gas mercury control (FGMC) and gasification wastewaters, combustion residual leachate water, and fly and bottom ash transport water. As part of the permit renewal process, the Department evaluated the facility for each of the applicable waste streams. The Unit 3 facility does not generate the aforementioned wastewater streams.

5. INDUSTRIAL SLUDGE MANAGEMENT Sludge management requirements are contained in Section II of the permit.

6. GROUND WATER MONITORING REQUIREMENTS Ground water monitoring requirements for this facility are included in Conditions of Certification PA 77-09.

7. DISCUSSION OF CHANGES TO PERMIT LIMITATIONS Unit 3 was previously permitted under the Crystal River Units 1, 2 and 3; and Citrus Combined Cycle Units PB-I & PB-2, permit No. FL0000159. Changes to the operation of Unit 3 include elimination ofintemal Outfall I-FE, Outfall D-095, and operation in SAFSTOR II mode as described in section 1.d above. Documentation was provided to the Department that pipe blinds were installed on August 21, 2019 to isolate internal outfall I-FE.

Limitations and monitoring for iron and copper were removed from outfalls D-00F and I-FG since the facility indicated that they no longer generate chemical metal cleaning wastewater for which monitoring of these parameters was only required when the wastewater was discharged. The associated permit condition and footnote were also removed.

The chronic toxicity testing at outfall D-00F was changed to acute testing based on discharges being batch, intermittent, no chemical usage, and no heated discharges.

The facility indicated that outfall D-095 used for an emergency backup water supply was no longer in service and therefore was removed from the permit. The outfall was not subject to limitation and monitoring requirements.

8. PERMIT SCHEDULES See Section VI. (Schedules) of the permit.

9. BEST MANAGEMENT PRACTICES The facility shall develop and implement a Best Management Practices Plan as described in Section VII of the permit. The plan entails management practices for both industrial wastewater and stormwater.

10. EFFECTS OF SURF ACE WATER DISCHARGE ON THREATENED OR ENDANGERED SPECIES The Department does not anticipate adverse impacts on threatened or endangered species as a result of permit issuance.

11. ADMINISTRATIVE ORDERS (AO) AND CONSENT ORDERS (CO)

This permit is not accompanied by an AO and is not currently under a CO with the Department.

12. REQUESTED VARIANCES OR ALTERNATIVES TO REQUIRED STAND ARDS Not applicable.

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13. THE ADMINISTRATIVE RECORD The administrative record including application, draft permit, fact sheet, public notice (after release), comments received and additional information is available for public inspection during normal business hours at the location specified in item

16. Copies will be provided at a minimal charge per page.

14. PROPOSED SCHEDULE FOR PERMIT ISSUANCE Draft Permit and Public Notice to Applicant and EPA November 8, 2019 Public Comment Period Beginning: November 15, 2019 Ending: December 15, 2019 Notice of Intent to Issue December 20, 2019 Notice of Permit Issuance January 15, 2020

15. DEP CONTACT Additional information concerning the permit and proposed schedule for permit issuance may be obtained during normal business hours from:

Marc Harris, P.E.

Department of Environmental Protection 2600 Blair Stone Road Tallahassee, FL 32399-2400 Telephone Number: (850) 245-8589 Fax Number: (850) 245-8669

16. PROCEDURES FOR THE FORMULATION OF FINAL DETERMINATIONS

a. Public Comment Period The Department of Environmental Protection proposes to issue a wastewater facility permit to this applicant subject to the aforementioned effluent limitations and conditions. This decision is tentative and open to comment from the public.

Interested persons are invited to submit written comments regarding permit issuance on the draft permit limitations and conditions to the following address:

Department of Environmental Protection 2600 Blair Stone Road Mail Station 3545 Tallahassee, FL 32399-2400 Attn.: Marc Harris, P.E.

All comments received within 30 days following the date of public notice, pursuant to Rule 62-620.550, F.A.C., will be considered in the formulation of the final decision with regard to permit issuance.

Any interested person may submit written comments on the Department's proposed permitting decision or may submit a written request for a public meeting to the address specified above, in accordance with Rule 62-620.555, F.A.C. The comments or request for a public meeting must contain the information set forth below and must be received in the above named District office of the Department within 30 days of receipt or publication of the public notice. Failure to submit comments or request a public meeting within this time period will constitute a waiver of any right such person may have to submit comments or request a public meeting under Rule 62-620.555, F.A.C.

The comments or request for a public meeting shall contain the following information:

(I) The commenter's name, address and telephone number, the applicant's name and address, the Department Permit File Number and the county in which the project is proposed; (2) A statement of how and when notice of the draft permit was received; Page8

(3) A description of any changes the commenter proposes for the draft permit; (4) A full explanation of the factual and legal reasons for each proposed change to the draft permit; and (5) A request that a public meeting be scheduled (if applicable) including a statement of the nature of the issues proposed to be raised at the meeting.

b. Public Meeting The Department will hold a public meeting ifthere is a significant degree of public interest in the draft permit or if it determines that useful information and data may be obtained thereby. Public notice of such a meeting shall be published by the applicant at least 30 days prior to the meeting.

If a public meeting is scheduled the public comment period is extended until the close of the public meeting. If a public meeting is held any person may submit oral or written statements and data at the meeting on the Department's proposed action.

c. Issuance of the Permit The Department will make its decision regarding permit issuance after consideration of all written comments, including comments from the United States Environmental Protection Agency on surface water discharge (NPDES) aspects of the draft or proposed permit; the requirements of Chapter 403, F.S., and appropriate rules; and, if a public meeting is held, after consideration of all comments, statements and data presented at the public meeting. The Department will respond to all significant comments in writing. The Department's response to significant comments will be included in the administrative record of the permit and will be available for public inspection at the above named District office of the Department.

Unless a request for a administrative hearing, or an extension oftime to file a petition for an administrative hearing, pursuant to Chapter 120, F.S., as indicated ind. below, is granted, the Department will take final agency action by issuing the permit or denying the permit application. If an administrative hearing is convened, final agency action will be based on the outcome of the hearing.

d. Administrative Hearing A person whose substantial interests are affected by the Department's proposed permitting decision has the opportunity to petition for an administrative proceeding (hearing) to challenge the Department's decision in accordance with Section 120.57, F.S.

An administrative hearing is an evidentiary proceeding in which evidence is presented by testimony and exhibits before an independent hearing officer. The result of an administrative hearing is the issuance of the hearing officer's recommended order to the Department, including the hearing officers findings of fact, based on the evidence presented at the hearing. The Department will issue a final order, granting or denying the permit, based on the hearing officer's recommended order.

The petition for an administrative hearing must contain the information set forth below and must be filed (received) in the Office of General Counsel of the Department at 3900 Commonwealth Boulevard, Tallahassee, Florida 32399-3000, within 14 days of publication of notice of agency action or within 14 days of personal receipt of notice of agency action, whichever occurs first. The petitioner is to mail a copy of the petition to the applicant at the time of filing. Failure to file a petition within this time period will constitute a waiver of any right such person may have to request an administrative determination (hearing) under section 120.57, F.S. The petition is to contain the following information:

(I) The name, address and telephone number of each petitioner, the applicant's name and address, the Department Permit File Number and the county in which the project is proposed; (2) A statement of how and when each petitioner received notice of the Department's action or proposed action; (3) A statement of how each petitioner's substantial interests are affected by the Department's action or proposed action; (4) A statement of the material facts which the petitioner contends warrant reversal or modification of the Department's action or proposed action; Page9

(5) A statement of which rules or statutes petitioner contends require reversal or modification of the Department's action or proposed action; and (6) A statement of the relief sought by the petitioner, stating precisely the action the petitioner wants the Department to take with respect to the Department's action or proposed action.

If a petition is filed, the administrative hearing process is designed to formulate agency action. Accordingly, the Department's final action may be different from the position taken by it in the notice of agency action. Persons whose substantial interests will be affected by any decision of the Department on the application have the right to petition to become a party to the proceeding, regardless of their agreement or disagreement with the Department's proposed action indicated in the notice of agency action.

Page 10

DEPARTMENT OF ENVIRONMENTAL PROTECTION DISCHARGE MONITORING REPORT* PART A

\Vhen Completed submit this report to: http 1/www fldepportal com/go/

PERMITIEE NAME Duke Energy Florida, LLC PE~llT NUMBER FLOA00004-001 -IWIS MAILING ADDRESS 15760 West Power Line Street Crystal River, Flonda 34428 LIMIT Fmal REPORT FREQUENCY Monthly CLASS SIZE MA PROGRAM Industrial FACILITY Crystal River Umt 3 MONITORING GROUP NUJ\IBER D-OOF LOCATION 15760 West Power Lme Street MONITORING GROUP DESCRIPTION An existing 1nterm1ttent discharge of RW system and ancillary water effiuent to the Crystal River Energy Complex mam discharge canal and thence to the Gulf ofMe,uco 0

Crystal River, Flonda 34428 RE-SUBMITTED DMR NO DISCHARGE FROM SITE COUNTY Citrus MONITORING PERIOD From _ _ _ _ _ _ _ _ To OFFICE Southwest D1stnct Parameter Quanuty or Loading Untts Quality or Concentration Umu No Frequency of Sample Type Ex Analvs1s Flow(RW) Sample Measurement PARM Code 50050 7 Permit Repon Repon MGD Hourly Logs or Mon. SueNo INT-7A Reauuement IDavMax.l (Mo Av* l Calculated Flow (ECST or SAFSTOR Sample Collect1on Tank) Measurement PARM Code 50050 I Perrmt Repon Repon MGD Dally, when Logs or Mon Sue No EFF-78 Reau1rement !Dav Max l /Mo Ava.I d1schanunu Calculated 011 and Grease (ECST or Sample SAFSTOR Collecuon Tank) [D- Measurement OOF]

PARM Code 00556 I Permit so so mg/L Weekly. when Grab Mon Sue No EFF-7 Reau1rement !Mo Aval !Dav Max l d1schannm1.

Sohds. Total Suspended (ECST or Sample SAFSTOR Collecuon Tank) [D* Measurement OOF)

PARM Code 00530 I Permit 30 0 1000 ms/I. Weekly, when Grab Mon Sue No EFF-7 IR,-nu1remen1 (Mo Aval /Dav.Max l d1schan1ina:

Number of Batches Sample Measurement P~ICode04138 I Pemut Repon Repon # Monthly Log Mon Site No EFF-7 Requirement (Day Max} (Mo Total) pH Sample PARM Code 00400 7 Mon. Sue No INT-7A Measurement Penmt Reau1rement Report

!Dav Mm l Repon

/Dav Max\

,. Dally, when d1scharam11 In Situ l certify under penalty of law that this document and all attachments were prepared under my direction or superv111on 1n accordance with a system designed to assure that qualified personnel properly gather and evaluate the mformauon submitted Based on my mqu1ry of the person or persons who manage the system, or those persons directly responsible for gathering the mformallon, the 1nformat1on submitted ts, to the best of my knowledge and bchef. true, accurate, and complete l am aware that there are s1gmficant penalties for subm1tt1ng false mformatlon, mcludmg the poss1b1hty of fine and 1mpnsonment for knowing v1olat1ons NAME/TITLE OF PRINCIPAL EXECUTIVE OFFICER DR AUTHORIZED AGENT SIGNATURE OF PRINCIPAL EXECUllVE OFFICER DR AUTHORIZED AGENT TELEPHONE NO DATE (mmlddln)))

COMJ',,IENT AND EXPLANATION OF ANY VIOLATIONS (Ref.,.ence all anachments here)

ISSUANCE/REISSUANCE DATE February 2020 DMR EFFECTIVE DA TE 1st day of the 2nd month followtng effective date of permit - Permit exptraUon DEP Form 62-620 910(10), Effective Nov 29, 1994

DISCHARGE MONITORING REPORT- PART A (Continued)

FACILITY Crystal River Unit 3 MONITORING GROUP D-00F PE~llT NUMBER FL0A00004-001-IWIS NUMBER MONITORING PERIOD From To Parameter Quantity or Loadmg Umts Quality or Concentration Umts No Frequency of Sample Type Ex Analysis pH Sample Measurement PARM Code 00400 I Permit 65 BS s.u, Dady, when In Situ Mon Site No EFF-7 Reau1rement CDavMm.l CDav Max I d1schara:ina LCS0 STATRE 96HOUR ACUTE Sample Memd1a berylhna (Routme) Measurement PARM CodeTAN6B p Permit 100 percent Annually Grab Mon. Sue No EFF-7 Reauuement !Mm.I LCS0 STA TRE 96HOUR ACUTE Sample Memd1a berylhna (Addu1onal) Measurement PARMCodeTAN6B Q Permit 100 percent As needed As required by Mon Sue No EFF-7 Reau1rement (Mm) theoerm1t LCS0 STATRE 96HOUR ACUTE Sample Men1d1a berylhna (Addu1onal) Measurement PARMCodeTAN6B R Permit 100 percent As needed As required by Mon SIie No EFF-7 Reau1rement fMml thene:m11t LCS0 STATRE 96HOUR ACUTE Sample Amencamys1s (Mys1dops1s) bahu1 Measurement (Routine)

PARM Code TANJE p Permit 100 percent Annually Grab Mon. Site No EFF-7 Reauirement (Mm.I LCS0 STATRE 96HOUR ACUTE Sample Amencamys1s (Mys1dops1s) bah1a Measurement (Add111onal)

P~ICodeTANJE Q Permit 100 percent As needed As required by Mon Sue No EFF-7 Reau1rement !Mm.I the oerm1t LCS0 STATRE 96HOUR ACUTE Sample Amencamys1s (Mys1dops1s) bah1a Measurement (Add111onal)

PARM Code TANJE R Permit 100 percenl As needed As required by Mon. Site No EFF-7 Reautrement (Mm.) theoerm1t ISSUANCE/REISSUANCE DATE February 2020 DMR EFFECTIVE DATE 1st day of the 2nd month fotlowmg effective date of permit- Permit expuat1on DEP Form 62-620 910(10), Effective Nov 29, 1994

DEPARTMENT OF ENVIRONMENTAL PROTECTION DISCHARGE MONITORING REPORT- PART A When Completed submit this report to: http 1/www fldepportal com/go/

PEJU,,DITEE NAl\,IE Duke Energy Florida, LLC PERl\,UT Nl/11,IBER FLOA00004-001-IWI S MAILING ADDRESS 15760 West Power Lme Street Crystal River, Florida 34428 LIMIT Fmal REPORT FREQUENCY Monthly CLASS SIZE MA PROGRAM Industrial FACILITY Crystal River Umt 3 MONITORING GROUP Nl/11,IBER 1-0FG LOCATION 15760 West Power Lmc Street MONITORING GROUP DESCRIPTION An ex1stmg mtenmttent discharge from the regeneratmn waste neutrahzatrnn tank to Outfall D-OOF Crystal River, Flonda 34428 RE-SUBl\,OTTED DMR 0 NO DISCHARGE FROM SITE 0 COUNTY Citrus MONITORING PERIOD From _ _ _ _ _ _ _ _ To OFFICE Southwest D1stnct Parameter Quantity or Loading Umts Quahty or Concentration Umts No Frequency of Sample Type Ex Analvs1s Flow Sample Measurement PARM Code S00S0 I Permit Report Report MGD One Batch/month Calculated Mon. Site No EFF-8 RCQu1rement (Dav Max l (MoAv*l Oil and Grease Sample Measurement PARM Code 005S6 I Pem11t IS 0 200 mg/L One Batch/month Grab Mon. Site No EFF-8 Reau1rement IMo.Avu.l ffiavMax)

Sohds, Total Suspended Sample Measurement PARM Code 00530 I Permit 300 1000 mg/L One Batch/month Grab Mon Site No EFF-8 Reauirement (Mo.Av* l mav Max l pH Sample Measurement PARM Code 00400 I Permit 60 90 SU One Batch/month lnSuu Mon. Site No EFF-8 Reau1rement (Dav Mm) !Dav.Max l Number Of Batches Sample Measurement PARMCode04l38 I Permit Report Report # Monthly Log Mon Site No EFF-8 Reau1rement !Dav Max l fMoTotall I certify under penalty of law that this document and all attachments were prepared under my direction or superv1S1on m 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 mformatlon submitted 1s, to the best ofmy knowledge and behef, true, accurate, and complete I am aware that there are stgmficant penalties for submtttmg false mforrruitton, 1ncludmg the poss1b1hty of fine and 1mpnsonment for knowing v1olattons NAME/TITLE OF PRINCIPAL EXECUTIVE OFFICER OR AlfTHORIZED AGENT SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR AlfTHORIZED AGENT TELEPHONE NO DATE (mmidd/)111)

COMl\,IENT AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here)

ISSUANCE/REISSUANCE DATE February 2020 DMR EFFECTIVE DATE Ist day of the 2nd month followmg effective date of permll - Permit exp1rat1on DEP Form 62-620 910(10), Effective Nov 29, 1994

INSTRUCTIONS FOR COMPLETING THE WASTEWATER DISCHARGE MONITORING REPORT Read these mstrucuons before completing the DMR Hard copies and/or electron,c copies of the required pans of the DtvlR were provided wnh the permit All required mformauon shall be completed m full and typed or pnnted m mk A signed, ongmal OMR shall be malled to the address pnnted on the DMR by the 2s* of the month followmg the momtonng penod Fac1httes who submit their DMR(s) elcctron1cally through eDMR do not need to submit a hardcopy DMR The Ot,.,lR shall not be submitted before the end of the momtormg penod The DMR consists of three pans .. A, B, and D-all of which may or may not be applicable to every fac1hty Fac1hues may have one or more Pan A's for reporting effiuent or reclaimed water data All domestic wastewater fac1hues will have a Pan B for reporting daily sample results Part D 1s used for reportmg ground water momtonng well data When results arc not available, the following codes should be used on pans A and D of the DMR. and an cxplanatton provided where appropriate Note Codes used on Pan B for raw data arc different CODE DESCRIPTION/INSTRUCTIONS CODE DESCRIPTION/INSTRUCTIONS ANC Analysts not conducted. NOD No discharge from/to site DRY Dry Well OPS Operations were shutdown so no sample could be taken.

FLD Flood disaster 0TH Other Please enter an explanation of why momtonng data were not available IFS Insuflic1cnt flow for sampling SEF Sampling equipment failure LS Lost sample MNR Momtonn~ not reQuired this penod When rcponing analyttcal results that fall below a laboratory's reported method detection hm1ts or practical quantification hm1ts, the following instrucuons should be used, unless indicated otherwise m the pemut or on the Df\,(R Results greater than or equal to the PQL shall be reported as the measured quantity 2 Results less than the PQL and greater than or equal to the MDL shall be reported as the laboratory's MDL value These values shall be deemed equal to the MDL when necessary to calculate an average for that parameter and when dctcrmmmg compliance with pcnmt hmns Results less than the MDL shall be reported by cntcnng a less than sign("<") followed by the laboratory's MDL value, cg < 0 001 A value of one-half the MDL or one.half the effiuent hm1t, whichever 1s lower, shall be used for that sample when necessary to calculate an average for that parameter Values less than the MDL arc considered to demonstrate comphancc with an cffiucnt hm1tat1on PART A -DISCHARGE MONITORING REPORT (D~IR)

Pan A of the DMR 1s compnscd of one or more sections, each having its own header information Fnc1hty information 1s preprinted in the header as well as the momtormg group number, whether the hm1ts and momtonng requirements arc mtenm or final, and the required submittal frequency (e g monthly, annually, quarterly, etc) Submit Part A based on the required reporting frequency m the header and the instructions shown m the permit The following should be completed by the perm1ttcc or authonzed representative Resubmitted DMR: Check this box: 1f this D~IR 1s being re-submitted because there was mformauon m1ssmg from or mformatrnn that needed correction on a previously submitted DMR The information that 1s bemg revised should be clearly noted on the re-submitted DMR (cg h1ghhght, circle, etc)

No Dischnree From Site: Check this box 1f no discharge occurs and, as a result, there are no data or codes to be entered for all of the parameters on the D~(R for the entire momtormg group number, however, 1f the momtormg group includes other momtormg locations (e g , influent sampling), the "NOD" code should be used to 1nd1v1dually denote those parameters for which there was no discharge l\lonitorine Period: Enter the month, day, and ye3r for the first and last day of the monnonng period (1 c the month, the quarter, the year, etc ) dunng which the data on this report were collected and analyzed Sample Measurement: Before filhng m sample measurements m the table, check to see that the data collected correspond to the hm1t md1cated on the DMR (1 e mtenm or final) and that the data correspond to the momtoring group number m the header Enter the data or calculated results for each parameter on this row in lhe non-shaded arC3 above the hm1t Be sure the result bcmg entered corresponds to the appropriate statistical base code (e g annual average, monthly average, smgle sample maximum, etc ) and umts Data qualifier codes are not to be reported on Pan A No. Ex.: Enter the number of sample measurements during the monnormg period that exceeded lhc permit hmlt for each parameter m lhe non-shaded area If none, enter zero Frequency or Analysis: The shaded areas m this column cont.am lhe mm1mum number of ttmes the measurement 1s required to be made according to the permit Enter the actual number of umes the measurement was made m the space above the shaded area Sample Type: The shaded areas m this column cont.am the type of sample (e g grab, composite, continuous) required by the permit Enter the actual sample type that was taken in the space above the shaded area Sienature: This report must be signed m accordance with Rule 62-620.305, F A C Type or print the name and title of the s1gnmg official Include the telephone number where the official may be reached in the event there are questions concermng this report Enter the date when the report ts signed Comment and Explanation of Any Violations: Use this arC3 to explain any exceedances, any upset or by-pass events, or other Items which require ex:planabon If more space 1s needed, reference all attachments in this arC3 ISSUANCE/REISSUANCE DATE February 2020 DEP Form 62-620 910( IO) , Effective Nov 29, 1994

PART B

• DAILY SAMPLE RESULTS l\lonitorine: Period: Enter the month, day, and year for the first nnd last day of the monitoring period (1 e the mont~ the quarter, the year, etc) durmg which the data on this report were collected and analyzed Daily Monitorine: Results: Transfer all analytical data from your fac1hty's laboratory or a contract laboratory"s data sheets for all day(s) that samples were collected Record the data m the units md1cated Table I m Chapter 62-160, F A C , contains a complete hst of all the data quahfier codes that your laboratory may use when reporting analytical results However, when transfemng numerical results onto Part 8 of the DMR. only the followmg data aualifier codes should be used and an exnlannuon nrov1ded where armroonate CODE DESCRIPTION/INSTRUCTIONS

< The comoound was analvzed for but not detected A Value reoorted 1s the mean laveraae) of two or more determinations J Estimated value. value not accurate 0 Samole held bevond the actual holdm* time y laboratorv analvs1s was from an unpreserved or 1morooerlv oreserved samole To calculate the monthly average, add each reported value to get a total For flow, d1v1de this total by the number of days m the month For all other parameters, d1v1de the total by the number of observations Plant Staffinc: List the name, certificate number. and class of all state certified operators operatmg the fac1hty durmg the momtormg penod Use additional sheets as necessary PART D *GROUNDWATER MONITORING REPORT Monitorine Period: Enter the month, day, and year for the first and last day of the momtormg penod (1 e the month, the quarter, the year, etc) durmg which the data on this report were collected and analyzed Date Sample Obtained: Enter the date the sample was taken Also, check whether or not the well was purged before samphng.

Time Sample Obtained: Enter the time the sample was taken Sample Measurement: Record the results of the analysis If the result was below the m1D1mum detection hm1t, 1nd1cate that Data quahfier codes are not to be reported on Part D Detection Limits: Record the detection hm1ts of the analytical methods used Analysis Method: Indicate the analytical method used Record the method number from Chapter 62-160 or Chapter 62-601, F A C , or from other sources Samplinc Equipment Used: Indicate the procedure used to collect the sample (e g a1rhft, bucket/bailer, centrifugal pump, etc)

Samples Filtered: Indicate whether the sample obtamed was filtered by laboratory (L), filtered m field (F), or unfiltered (N)

Sicnature: This report must be signed ID accordance with Rule 62-620 305, FA C Type or prmt the name and title of the s1gmng official Include the telephone number where the official may be reached ID the event there are questions concerning this report Enter the date when the report 1s signed Comments and Explanation: Use this space to make any comments on or explanations of results that are unexpected If more space 1s needed, reference all attachments ID this area SPECIAL INSTRUCTIONS FOR LIMITED WET WEATHER DISCHARGES Flow (Limited Wet Weather Dbcharee): Enter the measured average now rate dunng the penod of discharge or d1v1de gallons discharged by duration of discharge (converted mto days) Record m m1lhon gallons per day (MGD)

Flow (Upstream): Enter the average now rate m the rece1vmg stream upstream from the po1Dt of discharge for the penod of discharge The average now rate can be calculated based on two measurements, one made at the start and one made at the end of the discharge penod Measurements are to be made at the upstream gauging station descnbed m the permit Actual Stream Dilution Ratio: To calculate the Actual Stream Dilution Ratio, d1v1de the average upstream flow rate by the average discharge now rate Enter the Actual Stream Dilution Rauo accurate to the nearest O 1 No. or Days the SDF > Stream Dilution Ratio: For each day of discharge, compare the mm1mum Stream D1luuon Factor (SDF) from the permit to the calculated Stream Dilution Ratio On Part B of the DMR, enter an asterisk

(*) tfthe SDF 1s greater than the Stream D1lut1on Ratio on any day of discharge On Part A of the DMR, add up the days with an"*" and record the total number of days the Stream Dilution Factor was greater than the Stream D1lut1on Ratio CBOD,: Enter the average CBOD! of the reclaimed water discharged durmg the penod shown m duration of discharge TKN: Enter the average TKN of the reclaimed water discharged dunng the penod shown ID duration of discharge Actual Rainfall: Enter the actual ramfall for each day on Part B Enter the actual cumulative rainfall to date for thts calendar year and the actual total monthly ramfnll on Part A The cumulative ramfall to date for this calendar year ts the total amount of ram, m inches, that has been recorded smce January I of the current year through the month for which this DMR contains data Rainfall Durin& Average Rainfall Year: On Part A, enter the total monthly rainfall durmg the average ra1Dfall year and the cumulative rainfall for the average rainfall year The cumulative ramfnll for the average ramfall year 1s the amount of ram, m inches, which fell dunng the average rainfall year from January through the month for which this DMR contains data No. of Days LWWD Activated Durin& Calendar Year: Enter the cumulative number of days that the hmned wet weather discharge was activated smce January I of the current year Reason for Dbcharge: Attach to the D~IR a bnef explanation of the factors contnbutmg to the need to activate the hmtted wet weather discharge ISSUANCE/REISSUANCE DATE February 2020 DEP Form 62-620 910(10), Effective Nov 29, 1994