3F0621-02, 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

ML21167A234
Person / Time
Site:	Crystal River
Issue date:	06/16/2021
From:	Dixon P ADP CR3
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
3F0621-02
Download: ML21167A234 (36)

Text

Crystal River Nuclear Plant 2760 South Falkenburg Rd Riverview, FL 33578 Docket 50-302 Docket 72-1035 ADPCR3 , LLC Operating License No. DPR-72 Appendix B - Part II Environmental Protection Plan (Non-Radiological)

Technical Specifications June 16, 2021 3F0621-02 U.S. Nuclear Regulatory Commission Attn : Document Control Desk Washington , DC 20555-0001

Subject:

Crystal River Unit 3 - Reporting Related to the National Pollutant Discharge Elimination System (NPDES) Permit ID# FL0A00004-001-IW1S

Dear Sir or Madam:

ADP CR3 , LLC (ADP CR3) is requesting a minor revision to the existing Industrial Wastewater Facility Permit for Crystal River Nuclear Plant Unit 3 (CR3) (Permit No. FL0A0004) . The proposed revisions will change monitoring and reporting requirements and delete a point source outfall.

ADP CR3 is proposing to remove the Station Drain Tank 1 system (SDT-1) as a flow path for process wastewater. This revision would delete Internal Outfall I-FG as SDT-1 is the only source that discharges to Internal Outfall I-FG.

ADP CR3 is also proposing to revise the description and nomenclature of the Evaporator Condensate Storage Tanks (ECST) system to Liquid Waste Disposal (WD) system. This revision will increase process water storage by allowing additional storage tanks within the WD system to be used. The treatment process of the water will remain unchanged , and the discharge will still be by batched releases (each tested prior to release) . As a result of the proposed added storage, ADP CR3 is also proposing to revise the frequency of analysis of the monitoring requirements to each batch from weekly, when discharging .

ADP CR3 is requesting to eliminate the monitoring and reporting requirements for Acute Whole Effluent Toxicity, 96 Hour LC50 and for pH at the intake to Unit 3. ADP CR3 has been monitoring for Acute Whole Effluent Toxicity for two years and has demonstrating compliance over those two years. In addition , there are two other existing Industrial Wastewater Facility Permits associated with Crystal River Units 1 & 2 (FL0000159) and 4 & 5 (FL0036366) that both monitor for Acute Whole Effluent Toxicity. Flows associated with these two permits discharge into the same discharge canal as Unit 3.

This submittal is required by the CR3 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 3.2.4 ., states: "The NRC shall be notified of changes to the effective NPDES Permit proposed by the licensee by providing NRC with a copy of the proposed change at the same time it is submitted to the permitting agency."

Crystal River Nuclear Plant 0 2760 South Falkenburg Rd

... Riverview, FL 33578 0 ~ Docket 50-302

~

Docket 72-1035

~ ADP CR3, LLC Operating License No. DPR-72 Th is letter contains no new regulatory commitments .

If you have any questions regarding this submittal , please contact Mr. Mark Van Sicklen ,

Licensing Manager, at (352) 436-5572.

(l;A~

Phyllis A. Dixon, ISFSI Manager PAD/mvs

Attachment:

Application for a Minor Revision to a Wastewater Facility or Activity Permit cc: NMSS Project Manager Regional Administrator, Region I

U.S. Nuclear Regulatory Commission 3F0621-02 ADP CR3, LLC DOCKET NUMBER 50-302 / 72-1035 LICENSE NUMBER DPR-72 ATTACHMENT 1 APPLICATION FOR A MINOR REVISION TO A WASTEWATER FACILITY OR ACTIVITY PERMIT

HALEY & ALDRICH, INC.

400 Augusta Street ICH Suite 100 Greenville, SC 29601 864.214,8750 15 June 2021 Marc H. Harris, P.E.

Wastewater Management Program Division of Water Resource Management State of Florida Department of Environmental Protection 13051 N. Telecom Parkway Temple Terrace, Florida 33637-0926

Subject:

Minor Revision to Permit No. FL0A00004 Crystal River Unit 3 15760 West Power Line Street Crystal River, Florida 34428 Facility Identification No. FL0A00004-003-IWF; FDEP Site No. ERIC_15353 State letter No. 3S0621-0l

Dear Mr. Harris:

Haley & Aldrich, Inc. is submitting the following on behalf of ADP-CR3, LLC (ADP-CR3) to request a minor revision to the existing Industrial Wastewater Facility Permit for Crystal River Nuclear Plant Unit 3 (CR3)(Permit No. FL0A00004). The proposed revisions will change monitoring and reporting requirements and delete a point source outfall.

ADP-CR3 is proposing to remove the Station Drain Tank 1 system (SDT-1) as a flow path for process wastewater. This revision would delete Internal Outfall I-FG as SDT-1 is the only source that discharges to Internal Outfall I-FG .

ADP-CR3 is also proposing to revise the description and nomenclature of the Evaporator Condensate Storage Tank (ECST) system to Liquid Waste Disposal (WD) system. This revision will increase process water storage by allowing additional storage tanks within the WD system to be used. The treatment process of the water will remain unchanged, and the discharge will still be by batched releases (each tested prior to release). As a result of the proposed added storage, ADP-CR3 is also proposing to revise the frequency of analysis of the monitoring requirements to each batch from weekly (when discharging) .

ADP-CR3 is requesting to eliminate the monitoring and reporting requirements for Acute Whole Effluent Toxicity, 96-Hour LC50, and for pH at the intake to Unit 3. ADP-CR3 has been monitoring for Acute Whole Effluent Toxicity for two years and has demonstrated compliance over that time. In addition, there are two other existing Industrial Wastewater Facility Permits associated with Crystal River Units 1

& 2 (FL0000159) and 4 & 5 (FL0036366} that both monitor for Acute Whole Effluent Toxicity. Flows associated with these two permits discharge into the same discharge canal as Unit 3.

www.haleyaldrich .com

State of Florida Department of Environmental Protection 15 June 2021 Page 2 Please find enclosed, the Application for a Minor Revision to a Wastewater Facility or Activity Permit, the current Industrial Wastewater Facility Permit (FL0A00004) with proposed revisions shown using Track Changes, and a process flow diagram for Crystal River Unit 3 with revisions shown.

Sincerely yours, HALEY & ALDRICH , INC.

Elida S. Danaher Senior Scientist

!~:::J Program Manager Attachments :

Application for a Minor Revision to a Wastewater Facility or Activity Permit Revised Industrial Facility Permit FL0A00004 Crystal Rive r Unit 3 Process Flow Diagram

\\ha leya Id rich.co m \s h a re\C F\Pro jects\ 134300\Perm it\N PD ES\Proposed _Mod ificatio ns_ March_ 2021 \2021 _ 0607 _ M i nor Revision Cover Letter .docx

APPLICATION FOR A MINOR REVISION TO A WASTEWATER FACILITY OR ACTIVITY PERMIT

APPLICATION FOR A MINOR REVISION TO A WASTEWATER FACILITY OR ACTIVITY PERMIT

1. Instructions

a. In accordance with Rule 62-620.325, F.A.C., this form must be submitted to the appropriate Department district office or approved local program when requests for minor revisions to a permit or minor modifications to a facility are made by a permittee, except for transfer of a permit to a new permittee and addition of a major user of reclaimed water to a Part ill reuse system. Application for transfer of a permit to a new permittee shall be made on DEP Form 62-620.910(11 ). Application for addition of a major user ofreclaimed water shall be made on DEP Form 62-610.300(4)(a)l.

b. Each applicable item must be completed in full in order to avoid delay in processing of this form. Where attached sheets or other technical documentation are provided, indicate appropriate cross-references.

c. Three (3) copies of this application with supporting documentation shall be submitted with this form .

d. All information is to be typed or printed in ink. Dates are to be entered in MM/DD/YR format.

e. This application and attachments shall be signed in accordance with Rule 62-620.305, F.A.C. Also, as applicable, this application and all attachments shall be signed and sealed by a professional engineer registered in Florida in accordance with Rule 62-620.310, F.A.C.

2. Facility Information

a. Permit Number: FL0A00004 b. Facility Identification Number: FL0A00004-003-IWF

c. Project/Facility Name: _C_ry"-s_ta_l_R_iv_e_r_U_n_it_3_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

d. Contact Name: Mitchell Walker Number and Street:

15760 West Power Line Street City/State/Zip Code: Crystal River, FL 34428 Telephone -~------------------------------

_8_59_-_80_3_-0_3_89_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

3. Type of Revision D Correct Typographical Errors 1

- Submit one copy of each page of the permit showing revisions being requested .

D Change Improvement Schedule 1

- Provide a description of the improvement, a list of the dates to be revised, and a reason for the proposed change in each date.

D Change Expiration Date of Permit 1

- Provide the current and proposed expiration dates for the permit and the reasons for the proposed change.

D Change Staffing Requirements2 - Describe the proposed change and submit justification for the change in accordance with Chapter 62-699, F.A.C.

1A processing fee is not required. DEP Form 62-620.910(9) 2 A processing fee is required with the application Effective October 23, 2000 in acco rdance with Rule 62-4.050, F.A.C.

~ Change Monitoring and Reporting Requiranenlr - Describe the proposed change and submit justification for the change in accordance with Chapter 62-601, F.A.C.

O Modify Approved Pretreatment Prognm1 - Describe the proposed modification and provide the information required by Rule 62-625.540, F.AC.

_3 Delete Point Source OutfaU 1

- Identify the outfall and explain why the outfall is being eliminated.

O Modify or Expand Approved Residuals Land Application Sites2 - Attach a new or updated Agricuhural Use or Dedicated Site Plan as required by Chapter 62-640, F.A.C.

O Minor Modification to the Facilityl - Provide a description of the proposed modification. If applicable, attach any reports, plam. and specificatiom which have been developed to implement this roodification.

0 Othtt1 - Provide appropriate documentation. Descnbe.

4. Certifications a Applicant or Authorized Representative I certify under penalty of Jaw that I have personally examined and am familiar with the information submitte.d in this application and all attachments and that, based on my inquiry of persons immediately respoosible for obtaining the information contained in the application, I believe that the information is true, accurate and complete. I am aware that there are significant penalties for submitting false information. including the possi~ ilityoffine imprnt. ~

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(SigoatureofAppicat ~ r i z e d Representative3)

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(Date) r::r -ff~I Name (please type) Mitchell Walker Company Name Aa:elendad Oecornmissia,19 Panrws (ACP,<:R3). UC Title Site Manager Company Address: 2760 S. Faulkenburg Rd.

Phone; 859-803-0389 City/State/Zip Code: Riverview, FL 33578 Email (optional): MitchellWalker@Nor1hStar.com --------------

b. Professional Engineer Registered in Florida l certify that the engineering features of this project have been (designed)~y me and found to conform to engineering principles applicable to such projects. In my prof~ement, this facility, when properly constructed, operated, and maintained, will comply with all applicable sta~ iitli\Jm Swe of Florida and rules of the Department. o*

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Y' *** * * **** ,, /'J ~,

Name (please type): Nicholas Davis

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Florida Registration Nwnber: 90118 ~~ ~~

Company Name: Haley & Aldrich,-Inc. -------

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Company Address: 400 Augu&ta Street, STE 100 City/Stale/Zip Code: Greenville. SC 29601 Phone Nwnbcr: 864-385--4002

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~'ferJ *.l/Sf Ema.ii (optional): ndavis@hateyatdrlch.com 2

October 8, 2020 Florida Department of Environmental Protection 2600 Blair Stone Road, MS 3585 Tallahassee, FL 32399-2400

Subject:

Written Letter of Authorization for Environmental Submittals

Dear Sirs/Madams:

This letter serves to designate Elida Danaher and Bethany Brooks of Haley & Aldrich, Inc. as authorized agents for ADP CR3, LLC (ADP) with the authority to sign documents related to non-radiological environmental compliance under the Florida Department of Environmental Protection and specifically AD P's Notice of Intent for the Multi-Sector Generic Permit (MSGP) and the National Discharge Elimination System (NPDES) Permit and associated reports . We also grant them authority to submit forms and permit applications, electronically using their account, opened in support of ADP's compliance program .

Signature ~

-- October 9 2020 Date John Hager Typed Name Vice President ADP CR3 LLC Title

REVISED INDUSTRIAL FACILITY PERMIT FLOA00004 STATE OF FLORIDA INDUSTRIAL WASTEWATER FACILITY PERMIT PERMITTEE: PERMIT NUMBER: FL0A00004 (Major) (Rev. B)

Transferred from: FILE NUMBER: FL0A00004-003-IWF ISSUANCE DATE: February 12, 2020 Duke Energy Florida, LLC (DEF) REVISION DA TE: September 18, 2020 TRANSFER To: EFFECTIVE DA TE: October I, 2020 EXPIRATION DATE: February 11 , 2025 Accelerated Decommissioning Partners (ADP-CR3), LLC RESPONSIBLE OFFICIAL:

Transferred from:

Mr. Martin J. Drango Station Manager Crystal River Unit 3 15760 West Power Line Street, POC Crystal River, FL 34428 To:

Mr. John A. Hager Vice President Accelerated Decommissioning Partners (ADP-CR3), LLC 2760 S. Faulkenburg Rd.

Riverview, Florida 33578 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. I megawatts {MW). Units 1 and 2 were retired in 2018 . Units 1 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 1 and 2 had a combined total name plate rating of approximately 964 MW. U nit 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. FL0000159). The surface water discharges from Un its 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

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACJLITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

wastewater treatment and disposal system to serve the facility is regulated under the Florida Electrical Power Plant Siting Act (License No. PA 77-09).

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 Tai~k I (SOT I) systen~ (non radwaste treatment systen~),,

SAFSTOR II svstem. and E.~*aporator Condensate Storage Tanks (E.CST) Liquid Waste Disposal (WO) system (radwaste treat1f!ent system1 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 Outfa.11 D 00F.

Raw Water System Discharge: The RW system is water pumpeas water from the intake canal into the plant to support discharges. This water is -that-dischargeg_s through Outfall D-00F to the discharge cana l. +J:ie-w.Water eollected is from i11ternal outfall I FG ,the SAFESTOR II System, and the Liquid Waste Disposal (WO) system can be mixed with the RW system tlow as needed for d ilution .EYaporator Condensate 8torage Tanks (ECST) .

StntioH DFRiH TnHk 1 systelfl: The SDT I is a regeneration waste neutralizatio1~ tank or seeondary drain Tank 1. The system uses 11eutrali2:ation ,rnd oil water separation to control oil and grease as requireEI. prior to diseharge through imernal outfall I FG. it is isolated and sampled for treatment or batch release. The treated wastewater is the11 discharges ey bateh releases through internal 0t1!fal l I J;G into the Raw '>later (R\!I) system to outfall D 00F, or routed to discharge througl~ the ECST 0t1tfall. The waste streams treated i11 this S)'Stem include tl~e follo*,>,*ing low 1, 1oluA1e waste streams: building floor drains, eqBipment Elrains laeoratory drains, rai1~ water i,~trusio,~, and system leakage and testing.

Ev1113orater Cendensnte Storage Ta,d,s Liquid Waste Disposal (WD) system: The -E.G&TWD system uses filtration and ion exchange 5)'Stent-for pollution control as required. Spent resins from the ion exchange svstem are sluiced to a spent resin storage tank along witl~ ether spent resills (e.g., those used to polish water L1Sed for the spent fuel f.JOOI), whereey they are tlte!t disposed_Qf off-site. The treatedWD system s-ktiee-water is thM-<lischarged by batch releases through outfall D -: 00F.

'>iastewater is pumped to the Miscellaneous Waste Storage Tank that also recei,*es stream from the reactor euilding sump.

The -E.G&T--WD system consists of twe--tanks . valves, piping. and sumps throughout the plant in the Atmiliary BuildiAg that collects wastewater from low volume wastes: floor drain§.. laboratories drains 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. E nvironmental 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.

2

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPfRATION DATE: February 11, 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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 GulfofMexico (WBID 8039), a Class II Marine Water. The point of discharge is located approximately at latitude 28° 57' 31.5" , longitude 82° 41' 56.5 W.

Internal Outfall I FC: An ei;isting intern'littent diseharge from t1'ie regeneration waste 1'\Bt1tralization lank to Otttfall D OOf:.

Stormwater Discharges D-100, D-200, D-300, D-400, D-500, and D-600: Existing discharges of storm water 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 I through 22 of this permit.

3

PERMlTTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACJLITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

I. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS A. Surface Water Discharges

l. 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 I FG StatioR DraiR Tank (SOT I); SAFESTOR II System, and effluent from the 5'Japorator Condensate Storage Tank (5CST)WD svstem] 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 (~WD Svstcm or Max Report Daily Maximum Daily, when Logs or MGD EFF-7B SAFSTOR Collection Tank) Max Report Monthly Average discharging Calculated Oil and Grease Max Weeld)*, ,1iieR

(~WD s, stem or Max 5.0 Daily Maximum mg/L Eliselu,:-ging_fui Grab EFF-7 See l.A.3 SAFSTOR Collection Tank) 5.0 Monthly Average ch Batch

[D-00F]

Solids, Total Suspended Weel,l~*- ,,, Rell

(~WD . \ stem or Max 100.0 Daily Maximum mg/L disclrnrgi1igfg Grab EFF-7 See I.A.4 SAFSTOR Collection Tank) Max 30.0 Monthly Average ch Batch

[D-00F]

Max Report Daily Maximum Number of batches # Monthly Log ~

Max Report Monthly Total

~ ~ gaily M01,iHHll!l !Jaily. 11lleH

-itl--5tttl J.N.+-M.

pH Mi+1/4 ~ !Jail,* Miniffrnm Elisellarg iHg (SAFS7 OR Collection ran!-..) s.u. Qaily, ,,,,hen -itl--5tttlG rab Max 8.5 Daily Maximum ID-00FI disolmrgiRgEa QI EFF-7 See I.A.5 Min 6.5 Daily Minimum ch Batch Calculated Aet1le Wllele t:;;f!h1eRf

+01,isily. 9e I l01c1r bG3Q j3efeffi MH1/2 +00 ~iHghi SaRiple Ami1c1ally Gfab ~ See I.A .a (MeRiaia 81:lf? llinaj

,l\euie Whale el+l1:1enl Ta*cici!J, 9e I l01c1r bC5Q j3efeffi MH1/2 +oo Siiigle Sa1iiple A1lR1:tally Gfab ~ See I.A.a (AFRerian1Hysis (Mysid013sis)

~

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.

4

PERMJTTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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 eGS+WD system effluent (following adequate mixing) exceeds the daily maximum limitation of 20.0 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 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 of 5.0 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 eGS+WD system (following adequate mixing) exceeds the daily maximum limitation of I 00.0 mg/L or 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 U collection tank (following adequate mixing) exceeds the monthly average limitation of30.0 mg/Land ifRW system dilution flow is being utilized to support discharge.

RW 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 n collection tank is discharging, and then only if the pH from I fG or the SAFSTOR U collection tank is outside the range of6.5-8.5. lfno siseharge from I fG oceurs, san~pling shall l:ie suring ne)tt siseharge of I fG or the SAFSTOR 11 colleetion taRk into the eomeined discharge at D QQF'.

6. The pern1ittee shall eomply *,vith the following requirements to e, aluate acute whole effi1nint to!<icity of the 1

discharge from outfall D QQF.

a. Effluent Limitation (I) In any routine or additional follow up test for acute whole efAuenl toxieity, the 9e hour 6C5Q shall not be less than IQQ% effluent. [R~iles 62 3Q2.2QQ( I). 62 302.500( I)(a)4 ., 62 4.24 11(3)(a). ans 61 4.24 I( I )(a) OF (2)(a), f .A.c.)

b. Monitoring FreEJueney (I) Routine to)(icity tests sl~all be condueted annually, the first starting within 6Q days ofthe effeetive dale of this permit and lasting for the duration of this permit.

c. Sampling ReEJuire1nents (I) Routine tests shall be eomlt1eted on one grab sample.

(2) f:or assitional follow up tests, the first and second test shall be eondt1ctes on grab samples.

d. Test Requirements (I) Routine Tests: All rot1tine tests sl~all be conducted using a control (0% effluent) ,md a n~ininrnm of fi~*e dilutions: 100%, 7S%, SO% , 2S%, and l2.S% eftlt1enl.

(2) The permittee sJciall conduct 96 hot1r act1te static renev;al to)<icity tests t1si11g the mysid, Americ11n~)*sis (Mysidapsis) b11hi11 , and the inland silYerside, Menidi11 ber) llin11, concurrently.

1 (3) All test Sf:leeies, procedures and quality assuranee criteria used shall be in accordance *;;ith Methods for Measuring Ae11te Toxicity af ~ft.luents 11nd Reeeiving W11ters ta Freshwater and Marine Org11nisms. 5th Edition, EPA 811 R 01 011. AA)' deYiation of the bioassa)* procesures outlineEI herein shall ee submitteEI in writing to the Department for re*,<iew and approYal prior to use. In the eYent the abo~'e method is re\ ised, the perrnittee shall condt1et acute to),icity testing in aceordance with the 1

revised method .

(4) The eontFol water ans dilution water uses shall be a1tifieial sea*;,'ater anEI silt1ted to the test salinity as describeEI in ~<:PA 821 R 02 012, Section 7.2.4. The lest salinity shall ee determined as follows:

5

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMJT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPTRA TION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

(a) When lhe salinity of the effluent is 13etween I and 7 parts 13er thousand (ppt), the 1-0llowing salinity adjustment shall 13e used . For the AmeFieamysis hahia 13ioassays, the effiuenl and the control (0%

effluent) shall 13e adjusted to a salinity of7 p13l for the I00% effluent test using artificial sea salts.

No salinity adjustnient shall 130 done for the Menidie heFyllino 13ioassay test. The salinity of the control/dilution water (0% effluent) shall match the test salinity of the effluent. A salinity adjustment control sh01:ild 130 prepared and ineluded with the AmeFieamysis hohia 13ioassay. The salinity adjustment control is intended to identify tm,icity resulting from adjusting the salinity of the effluent with artificial sea salts. To 13repare the salinity acljustment control, dilute the control/dilution water to tl'le salinity of the effluent and aclj1:1sl the salinity of the salinity acljust1llent control to 7 ppt at the same ti1lle that the salinity of the effl1:10nt is adjusted to 7 ppt, using the same arli ficial sea salts.

(13) 'Nhen the salinity of the effluent is greater than 7 ppl, no salinity adjust1H1,mt shall 13e made to the effluent and the test shall 13e run at the effluent salinity. The salinity of the eontrol/dilution water (0% effluent) shall match the test salinity of the effluent.

e. QHalily AssHrance ReqHirements

( l) A standard refere1ice toKieant (SRT) qtiality assurance (QA) aeHle to>(icil.y test shall 13e c01iducled v,ith each species used in the reqHired tonicity tests ei1her coneHrrently or initiated no more than 30 days before the date of each roHtine or additional follow 1:1p test condHcted. Additionally, the SRT test mHst 13e condHcted concurrently if the test organ isms are ol3tainea from 01:1tside the test lal3oratory Hnless the test organism sHpplier proYides control cha11 data from at least the last fi*,*e monthly acute tm,icity tests using the same reference toKieaflt and test conditions. If the organis1ll s~113plier proviaes the required SRT elata. the organism SHpplier's SRT data anel the test lal3oratory's monthly SRT QA data shall 13e ineluaeel in the reports for each compaflion roHtine or additiof!al follow Hp test reqHired.

(2) lfthe mo11ality in tile eontrol (0% efflHent) ei,ceeds 10% for eitlrnr species in any test, the test for that species (incl Hsing the centre!) shall ee invalidates and the test repeatea . The repeat test shall eegin within 14 elays after the last day of the in*,alicl test.

(3) If I 00% 1flortality occurs in all efflue1lt eoflcentrations for eitller species prior to the ena of any test and the control mortality is less than I0% at tliat time. the test (inc!Haing tile control) for that species shall ee tenllinated with the conclusion that the test fails ans constitutes non compliance.

(4) RoHtine ana additional follow up tests shall 13e evalHateel for accepta13ility 13ased on the concentration response relationshi13, as reqHirea 13y EPA 821 R 02 012, Section 12.2.e.2 .. and inclueleel with the 13ioassay lal3oraWI)' reports.

f. Reporting Rec:iuire1i1e1its (1) Res~ilts froni all reqHired tests shall 13e repo11eel on the Discharge Monitoring Report (DMR) as follows:

(a) Routine Test ResHlts: If an LC50 > I00% effluent occHrs in all foHr separate gral3 sample tests for the test species, "> I00%" shall 13e e1iterea on the DlVIR for that test species. If in any of the four separate gral3 sample tests for the test s13ecies an LC50 __. , 00% efflHent occ11rs, the lov,est calculated LC50 efflHent concentration shall 13e entered on the DMR for that test species.

(13) Aaditional Follow Hp Test ResHlts: For each adelitional test reqHired, the calcHlatea LC50 *ralue shall 13e entered on the DMR I-Or d1at test speeies.

(2) A 13ioassay lal3oratory report for the roHtine test sh al I ee prepa.ed aceoraing lo EPA 8? I R 02 0 12, Seetion 12, Report Preparation and Test Review, anel nlailed to the De13artmeHt at the aaelress 13elow within 30 days after the last day of tile test.

(3) For additional follow up tests, a single 13ioassay laeoratory report shal I 13e prepared according to EPA 821 R 02 012, Section 12, and 1flailea within 30 elays after tlie last aay of the seeo11d valia aaelitional follow Hp test.

(4) Data for invalid tests shall 13e inclHded in the 13ioassay lal3oratory report for the repeat test.

(5) Tlie sa1lle 13ioassay elata shall not 13e reporteel as the res Hits of 1llore than one test.

(e) All eioassay lal3orat011* rep011s shall ee sent to:

Florida Department of Environmental Protection Industrial Wastev,*ater Offioe 6

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPfRATION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

2600 Blair Stone Road, M.S. 3545 Tallahassee, Florida 32399 2400

g. Test Failures (I) A test fails when the test results do not meet the lirnits in 6.a.( I) .

(2) Assitional Follow up Tests:

(a) lfa routine test does not meet the ac1:1te toicicity limitation in 6.a.( I) abo,*e, the permittee shall notify the Department at the assress abo\*e 1, 1,*ithin 21 days after the last day of the failes routine test and consuct two aaditional f.ollow up tests on each species that failed tl1e test in accoraance with 6.d.

(b) The first test shall be initiates within 2& says after the last day of the failed routine test. The remaining additional follow up tests shall be conducted weekly thereafter until a total oft>.Yo valid additional follow 1:1p tesls are completed .

(c) The first additional f.ollow 1:1p test shall be conductes using a control (0% efi-ll:lent) and a minimum offr,e dilutions: 100%, 75%, 50%, 25%, and 12.5% effluent. The penRirtee may modify the dilution series in the second additional follow 1:1p test to 1'flore accurately bracket the lm(icity such that at least two dilutions abo¥e and two dilutions aelow the target concentration and a cont=rol (0% effluent) are run. All test results shall be statistically analyzed according to the 13rocedtues in EPA &21 R 02 OP.

(3) In the e¥ent of three valid test failures (whether reutine or additional follow up tests) within a 12 l'flOnth 13eriod, the permittee shall notif)* the De13artment within 21 days after the last day of the third test failure.

(a) The 13ern~ittee shall submit a 13lan f.or correction of the effluent tm,icity within 60 days after the last day oftlw third test failure.

(b) The Deparl1'fle1H slrnll re*,*ie*,,,. and approYe the plan bef.ore initiation .

(c) The plan shall be initiated within 30 days following lhe Department's written a1313ro,*al of the plan.

(d) Progress reports shall be submitted quarterly to tl1e DeparttRent at the address above.

(e) D1:1ring the implem011tation of the plan, the pern1ittee shall conduct quarterly routine v,chole effluent tmdcity tests in accordance with 6.d. Additional follow up tests are nol required while the plan is in progress. Following completion or termination of the plan, the frequency of monitoring for routine and additional f.ollow up tests shall return to the schedlile established in 6.b.(1 ). lfa ro1:1tine test is invalid according to the acceptance criteria in EPA 821 R 01 012, a repeat test shall be initiated within 14 days after lhe last day of the ill',alid routine test.

(f) Upon co1'l'lpletion off.our consec1:1tive q1:1arterly Yalid ro1:1tine tests that demonstrate compliance with lhe effluent limitation in 0.a.( I) abo*,ce, the permittee may sl:lbmit a writlen reql:lest to the Department to terminate the plan . The plan shall be terminated 1:1pon written 1,erification ay the Department that the facility has passed at least fo1:1r consem1ti¥e q1:1arterly ¥al id roHtine whole effluent to1cicity tests. Ifa test within the sequence of the fo1:1r is deemed in¥alid, but is replaced b)' a repeat valid test initiates within 14 days after the last day of the iR',alid test. the invalid test will not be co1:1nted against the requirement for fo1:1F consecuti*re q1:10rterly ,*alid routine tests for the p1:1rpose ofterniinating the plan.

(4) The aEIElitional follow up testing an El the plan do not precll:!Ele tl~e Department taking enf.oreement action for whole effil:lent to>,icity fail1:1res .

{62 1.211 , 62 62{). 62{)(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)(I)]

7

PERMITTEE: Accelerated Decommissioning Partners, LLC PE RMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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 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 rx, Condition 22.

B. Internal Outfalls I. Dtiring !Re 13eri0el beginning en the issuanee elate anel lasting tllreugh tAe e1l13ira1i0n elate efthis 13ermit, tAe permittee is autl10riced le elisellarge Statien Drain Tank (SDT I) 1Naslewater frem lntenrnl O1:1tfall I FG ta O1:1tfall D OOf. Such elisoharge shall be limiteel anel monitered by tile 13en:nittee as s13eoifieel below anel reported in aocorelafloe wilA Perm it Cend ition I.CJ .:

!;flh1en1 l, imitalions ~4allileFillg ~eeiuiF81fl9Al5 Molliioring Mft'if l; FeEjtieney ~ Site 11an1cmt:!leF Yitt1/4s Miti btffi.it, ~lalislieal Basis er ,0,nalysis ~ Ntlffibef ~

Mffii ~ Daily Maidllrnm GHe

~ MG!:} C:ale1,1lated ~

Mffii ~ M01Hhl)* ,a,\,eFage Ba1eli,lmenlli Mal\- ~ Dail) Mr1,,imwii Gfle Oil and Grease mgl-6 Grab ~

Mal\- ~ Me,ilhl)' ,a,\erage Bt1leli,lmenih Ma,,. .J-00,G Dail) MOJ,ilHUIR GM 1'01t1I Su~pendell SAlies mgl-6 ~ ~

~ ~ Monlhl) ,a,,,*im1ge Ba1el1,l1,,0lllh Ma,. .Q.,-0 Daily Ma*1i1m:rn, GM See

~ s,tr. +R-5itti ~

Mm ~ Dail) ~ l iniAHllfl Ba1eli,lman1h ~

Daily Ma~d11H11fl

~lt11nber 1i r bale lies ~

~

1. MooWy b,g ~

Mffii ~ Menllily +elal

2. Effh1ent sa1:n13les shall be taken at the monitorillg site leoatiens listeel in Permit Collelitien LB. I allel as deseribeel

~

MenileFiHg Site Number De~eFiption or Menitoring Site Al Q1,11lall I l"G 1irieF le mi1d1ig ,,, ilh OHtfall D 001 *.

C. Other Limitations and Monitoring and Reporting Requirements

1. 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. MDLIPQL Table (May 31 , 2019)" is available at https ://floridadep.gov/dear/quality-8

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DA TE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

assurance/content/quality-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;

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 MDLs 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 of operation authorized by this permit, the permittee shall complete and submit to the Department Discharge Monitoring Reports (DMRs) in acco rdance 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 dav of month - last day of month 28 th day of following month Quarterly January I - March 31 Apri l 28 April 1 - June 30 July 28 July I - September 30 October 28 October I - December 31 January 28 Semiannual January 1 - June 30 July 28 Julv 1 - December 30 Januarv 28 Annual January I - December 31 January 28 The permittee shall use the electronic DMR system approved by the Department (EzDMR) and shall electronically subm it 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 of operation.

[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:

9

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMJT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

Florida Department of Environmental Protection Southwest District Office 13051 N. Telecom Parkway Temple Terrace, Florida 33637 Phone Number - (813) 470-5700

{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 of polychlorinated bi phenyl 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 IO 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.

10

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILJTY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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.

I 0. 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 uncontro lled 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.

11

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACIL[TY: Crystal River Unit 3 EXPIRATION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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)}

II. SLUDGE MANAGEMENT REQUIREMENTS 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). [fa 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 I. Section II1 is not applicable to this facility. Ground water monitoring requirements for this facility are included in Conditions of Certification PA 77-09.

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

rv. ADDITIONAL LAND APPLICATION REQUIREMENTS Section JV 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 ofa 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; 12

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRA TrON DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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)

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), FA.CJ VI. SCHEDULES

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

Com letion Date I. Continue Im lementin Existin BMP3 Plan Issuance Date of Permit

[62-620.320(6))

2. lfthe 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 (l 80) prior to the expiration date of this permit. Application shall be made using the appropriate forms listed in Ru le 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

l. 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 311 of the CWA, or chemical listed in Section 313(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.

13

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FAC[LTTY: Crystal River Unit 3 EXP IRA TCON DA TE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

(6) "Pollution prevention" and "waste minimization" refer to the first two categories ofEPA'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.

(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 of raw 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 ofrefrigerated 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 spi ll s or leaks of toxic or hazardous materials have occurred (un less 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, app licable portions of the BMP3 plant shall be signed and sealed by the professional(s) who prepared them.

14

PERMTTTEE: Accelerated Decommissioning Partners , LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACJLITY: Crystal River Unit 3 EXPIRATION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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 made known to all facility employees. Management shall also provide training for the individuals responsible for implementing the BMP3 plan.

b. BMP3 Plan Requirements

(!) 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 of a 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 of responsibilities 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 15

PERMITTEE: Accelerated Decommissioning Partners , LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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 (I) 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 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:

REOUfREMENT TIME FROM EFFECTIVE DATE 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 lffollowing 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 oi l 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 .

16

PERMITTEE: Accelerated Decommissioning Partners , LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILfTY: Crystal River Unit 3 EXPfRA TfON DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

e. There shall be no discharge of floating solids or visible foam in other than trace amounts and no discharge ofa visible oi l 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 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 I. 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; (I) 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 perm it application.

{62-620.625(1)]

C. Impoundment Design, Construction, Operation, and Maintenance

1. lmpoundment integrity inspections and maintenance requirements are covered under Attachment Hof 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:

17

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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.

[62-620.335(1) -(4), F A.CJ

2. When publishing Notice of Draft and Notice oflntent in accordance with Rules62-110.106 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

1. 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 of new regulations, standards, or judicial decisions relating to CWA 316(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.

18

PERMITTEE: Accelerated Decommissioning Partners , LLC PERMIT NUMBE R: FL0A00004 (Major) Rev. B FACILfTY: Crystal River Unit 3 EXPIRATION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

F. Specific Conditions Related to Preservation of State Historical Resources I. lf 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.

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 I. 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.fldepportal.com/go/ (via "Submit" followed by "Report" or "Registration/Notification"). Notice required under Permit Condition Vill.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, FS.J

2. Tn accordance with Section 403 .077, F.S., unauthorized releases or spills reportable to the State Watch Office pursuant to Permit Condition IX.20.b.1. 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 ofunauthorized releases or spills may be provided to the Department through the Department' s Public Notice of Pollution web page at https ://floridadep.gov/po ll utionnotice .

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, FS.]

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))

19

PERMITTEE: Accelerated Decommissioning Partners , LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY : Crystal River Unit 3 EXPIRATION DATE: February I l , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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 does it allow the permittee to cause pollution in contravention of Florida Statutes and Department rules, unless specifically autho rized by an order from the Department. The perm ittee shall take all reasonable steps to minimize or prevent any discharge, reuse ofreclaimed 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. lfthe 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 compl iance 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 noncom pliance 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.

{62-62 0. 610(9)}

I 0. [n 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 .11 1, 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 requ ired by law which is needed to determine whether there is cause for rev ising, 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. Tfthe permittee becomes aware ofrelevant 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)}

20

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11 , 2025 A dditions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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)}

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(1 4)}

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 Rules 62 -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(1 7)}

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 62-160.3 00, 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.

21

PERMITTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11, 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

f. A lternate 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. 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:

(I) 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 STATE 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 ofpermittee 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 U) Other persons or agencies contacted.

(2) Oral reports, not otherwise required to be provided pursuant to subparagraph b.1 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. I 7, 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 ofthis permit. [62-620.610(2 1)}

22. Bypass Provisions.

22

PERMITTEE: Accelerated Decommissioning Partners , LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: CrystalRiverUnit3 EXPIRATION DATE: Februaryll , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

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 ofreasonable 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 JX.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 IO 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 abo ut 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 LX.22.b.1 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 wh ich there is unintentional and temporary noncompliance with technology-based effluent limitations because of factors beyond the reasonable control of the permittee.

(I) 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 ofan 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 ENVIRONMENTAL PROTECTION Marc H. Harris, P.E.

Program Administrator 23

PERMTTTEE: Accelerated Decommissioning Partners, LLC PERMIT NUMBER: FL0A00004 (Major) Rev. B FACILITY: Crystal River Unit 3 EXPIRATION DATE: February 11 , 2025 Additions to the permit are identified by italics and underline. Deletions are identified by strikethrough.

Wastewater Management Program Division of Water Resource Management 24

CRYSTAL RIVER UNIT 3 PROCESS FLOW DIAGRAM CRYSTAL RIVER UNIT 3 NPDES PROCESS FLOW DIAGRAM 2019- FL0000159 Remove SDT-1 from flow path and delete Internal Outfall 1-FG  :**************** *****:

- -, --------- ~ IWWPercolatlon  ;

I  : Ponds (IH below)  :

{

Please note that Outfalls D-O0H, D-071, D-072 and sampling TurblneBld1, 1-*******************l Sump location EFF-3D have been ',

requested to be moved to 1------

' -- --- ---..l' Crystal River 4&5 NPDES permit ~ .. . .. :

FL0036366.

0-071

l  !. ! J '

EFF-7B Helper Coolln1 Towers Cells 1&2 Raw Water Pump #6 Helper CT Intake Help<<CT SuMnWuh Helper Coolln1 To-rs Cells 3 &4

~72 EFF-108 (494.64)

U-3 Misc, Low Volume l egend Waste1trHm

-E---- Flowpath

• <--*** Alternate flowpath Sampl/ng location Plant Industrial Wastewater I (Max. Flowme. MGDI