ML17266A508

Forwards Public Notice of Proposed Reissuance of NPDES Permit,Permit Rationale & 316(b) Rationale for Inclusion in Des

ML17266A508
Person / Time
Site:	Saint Lucie
Issue date:	10/05/1981
From:	Kaplan C ENVIRONMENTAL PROTECTION AGENCY
To:	Sells D NRC
References
4E-CP, NUDOCS 8110130155
Download: ML17266A508 (50)

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REGULAiTORY INFORMATIONi D<ISTRI BUTTON SYSTEM ACCESSI ONi NBR 0 8 1'1 Qi 30 165< DOC ~ DA!TEN"' 1 /'1 0/05 NOT'ARI'ZED " NO 00 557' FACIL450:-335- St. Lucie" Planti Unii"t 1E, Florida Powe'r h L'<ight C'o; 50: 389 St, Lucie Plenty,.Unit 2g, Fl or ada Power 8 Ltigpti C'o ~, 050.00389 AUTH',<VAi<lEl AUTHOR'FFILIATiION KAPLAN'ECt.H's .Environmental Protection>> Agency RECIP's VAMEI RECIPIENT AFFIL<IA<TIO<V<

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UNITED STATES ENVIRONMENTALPROTECTION AGENCY 4< ~~ REGION IV 345 COURTLAND STREET ATLANTA.GEORGIA 30355 OCT 5 198t 4E-CP Mr. Donald E. Sells Project Manager

'<g t'() s OCP g F8 U. S. Nuclear Regulatory Commission 14800 Rocking Spring Drive Rockville, Maryland 20853 Re: St. Lucie Nuclear Plant Units 1 and 2 NPDES No. FL0002208

Dear Mr. Sells:

Enclosed is the Public Notice, draft NPDES Permit, Permit Rationale, and 316(b) Rationale for inclusion in the Draft EIS for the Reference Facility.

Should you have any questions, do not hesitate to contact me.

Charles H. Kaplan Chief Power Plant/Synfuel Unit Consolidated Permits Branch Enclosures cc: Mr. Robert Samworth(w/Attachments)

U. S. Nuclear Regulatory Commission 5iI 8110130155 811005 PDR ADQCK 0500033

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JOINT PUBLIC NOTICE U. S. Environmental Protection Agency Region IV, Consolidated Permits Branch 345 Courtland Street, N. E.

Atlanta, Georgia 30365 404/881-2328 in conjunction tCth Florida Department of Environmental Regulation Twin Towers Office Building 2600 Blair Stone Road Tallahassee, Florida 32301 904'/488-4807 Public Notice Ho. 81-FL195 October 15, 1981 NOTICE OF PROPOSED REISSUANCE OF NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM PElQHT AND NOTICE OF CONSIDERATION FOR STATE CERTIFICATION The V. S. Environmental Protection Agency proposes to reissue a National Pollutant Discharge Elimination System (NPDES) Permit to Florida Power and Light Company, Post Office Box 529100, Hiami, Florida 33152, for its St. Lucie Nuclear Plant, Units 1 and 2,Hutchinson Island, St. Lucie County, Florida, NPDES Permit No. FL0002208."

The application describes two discharges from the plant which gener-ates from the plant which penerates and transmit electricity, SIC Code 4911. The discharges enter the Atlantic Ocean off. Hutchinson Island. This area has been classified by the State of Florida as Class III Recreation .Propagation and Management of fish and Mildlife - Surface Waters.

The proposed NPDES permit contains limitations on the amounts of pollutants nllowed to be discharged and was drafted in accordance with the provisions of the Clean Hater Act (33 U.S.C. Section 1251 et oeq.) and other lawful standards and rcgulationo. The pollutant limitations and other permit conditions are tentative and open to comment from the public.

Persono wishing to comment upon or object to permit reissuance or to the proposed permit lied.tations and conditions, or wishing to request a public hearing, are invited to oubmit same in writing within thirty (30) days of the date of this notice to the Enforcement Division, Environmental Protection Agency, 345 Courtland Street, N. E., Atlanta, Georgia, 30365, ATTN: Ms. Earline Hanson.

The NPDES Number should be included in the first page of comments.

All comments received within the 30-day period will be considered in the 2'orhulation of final determinationo regarding the permit. Any intereoted person may trLthin the 30-day period request a public hearing. Uhere there io a oignificant degree of public intereot in the proposed permit ref.oomince, the EPA Regional Administrator will hold a public hearing.

• The proposed action will combine a reissuance of the Permit for Unit 1 with an initial issuance of a permit for Unit 2.

After consideration of all written comments and of the requirements and policies in the Act and appropriate regulations, the EPA Regional Administrator will make determinations regarding the permit reissuance. If the determinations are substantially unchanged from those announced by this notice, the EPA Regional Administrator will so notify all persons submitting written comments.

If the determinations are substantially changed, the EPA Regional Administrator will issue a public notice indicating the revised determinations. Requests for evidentiary hearing may be filed after the Regional Administrator makes the above-described determinations. Additional information regarding evidentiary hearing is available in 40 CFR Subpart E, 45 FR 33498 (May 19, 1980), or by contacting the Legal Branch at the address above or at 404/881-3506.

The administrative record, including applica'tion, fact sheet and/or draft permit, a sketch showing the exact location of the discharge, comments received, and additional information on hearing procedure is available by writing the EPA address above, or for review and copying at 345 Courtland Street, 2nd floor, Atlanta, Georgfa, between the hours of 8:15 a.m. and 4:30 p.m., Monday through Friday. A copying machine is provided for public use at a charge of 20'er page.

The Florida Dept. of Environmental Regulation has been requested to certify the discharge(s) .'n accordance with the provisions of Section 401 of the Clean Water Act (33 U.S.C. Sectio".. 12% et seq.). Comments on issuance of certification, including a request for public hearing, must be submitted to the state agency address above within thirty (30) days of the date of this public notice. If a public. hearing is held, as described above, the state, agency will "o-chair the hearing in order to receive comments relative to state certification.

The United States Nuclear Regulatory Commission will publish a notice of the availability of an operating phase Draft mental Impact Statement (DEXS) for Unit 2 at the St. LucieEnviron- site on or about October 23, 1981. A copy of the draft NPDES Permit and Rationale will be included in the DEIS.

Please bring the foregoing to the attention of persons who you know will be interested in this matter.

O.

.;.PJNI+ 9 ST'ES ENYIRONMENTALPROTECTION AGENCY REGION IV S45 COURTLANO STRCKT ATLANTA GEORGIA 3036S

~C AUTHORIZATION TO DISCHARGE UVDER THE NATIONALPOLLUTANT DISCHARGE ELIMINATIONSYSTEM In compliance with the provisions of the Clean Hater Act, as amended (33 U.S.C. 1251 et. seq,'he "Act"),

Florida Power and Light Company Post Office Box 529100 Miami, Florida 33152 io authorized to discharge from a facility located at St. Lucie Nuclear Power Plant Units 1 and 2 Hutchinson Xsland St. Lucie County, Florida to receiving waters named Atlantic Ocean from discharge points enumerated herein, as serial numbers 001, 002, 003, 004, 005, 006, 007 and 008 in accordance with effluent limitations, monitoring requirements and other conditions set forth in Parts I, IX, and IXI hereof. The permit consists of this cover sheet, Part I 1 1 pages(s), Part II 1 2 page(s) and Part III 3 page(s).

This permit shall become effective on This permit and the authorization to discharge shall expire at midnight, (5 Years)

Date Signed Howard D. Zeller Acting Director Enforcement Division

A. EFFLUENT LL~llTATIONSAND MONITORING REQUIREMENT'S f

During the period beginning on e f ective date and lasting through start of Unit 2 chlorination the permittee is. authorized to discharge from outfall(sl serial number(s) 001 Condenser cooling wa ter and auxiliary cooling water discharged to the Atlantic Ocean (includes other planr wastes).

Such discharges shall be limited and monitored by the permittee as specified below:

Effluent Charact ristic Discharge Limitations Monitoring Requirements Flowm /Day (MGD)

Discharge Temperature C( I')

Temperature Rise C( F)

Instantaneous Haximum 45 N/A (113) 1/

16. 7 (30) 1/

Measurement Frequency Hourly Hourly Hourly Sample

'I'ype Pump Recorders Recorders logs tt Total Residual Oxidants 0 (mv/1) 0.1 2/ 1/week Hultiple Grabs Hixing Zone Tempera ture C( F) 3/ N/A N/A Condenser Chlorine Addition N/A Daily Log (minutes/day)

Discharge of intake screen backwash is permitted, without limitation or monitoring requirements.

Auxiliary cooling water systems for Unit may be continuously chlorinated; however, 1

TRO shall not exceed a maximum instantaneous concentration of 0.03 mg/1 prior to entry into the Atlantic Ocean from this source. An intensive sampling program shall be instituted for at least 30 days following start of system chlorination to assure-compliance. In the event that TRO levels at the terminus of the discharge canal equal or exceed 0.02 mg/1, permittee shall implement a minimization study as indicated in Part III.J.

Permittee shall investigate the availability of continuous recording TRO monitors with low levels of sensitivity (0.01 to 0.03 mg/1) and shall field test such unit(s)

Not later than the start of Auxiliary cooling water system sshall a i install a continuous TRO recorder, if an acceptable chlorination device n

is n, perm found, at ittee the terminus of the di'scharge h canal. T n the event that a continuous recorder cannot be installed by start of chlorination, efforts shall continue (with progress reports r submitted quarterly) and monitoring for TRO shall be 1/week on not less than six o grab samples during daylight hours. Additional grab samples o during period(s) of TRO discharge from condensers. shall be conducted O C) 00 (CONT INU ED)

A. EF LUENT LDIITATIONSAND MONITORING REQUIREMENTS During the period beginning on ef f ective date and lasting through start of Unit 2 chlorination the perm!(tee is authorized to discharge from outfall(slseriaI number(s) 001 Condenser cooling water and auxiliary cooling water discharged to the Atlantic Ocean (includes other plant wastes) ~

(CONTINUED)

Samples taken in compliance with the monitoring requirements specified above shall be taken al the following ~oration(s):

Intake temperature and flow at plant intake and all other parameters in the dis-charge canal prior to discharge to the Atlantic Ocean.

1/ Under the following conditions the maximum discharge temperature shall be limited to 47.2 0 C(117 0 F) and the. temperature rise to 17.8(32): (1) Condenser and/or cir-culating water pump maintenance, (2) trottling circulating water pumps to minimize use of chlorine, and (3) fouling of circulating water system. In the event that discharge temperature exceeds 45 0 C(113 0 F) permittee shall notify the Chief, Water Enforcement Branch in a manner similar to that provided for in Part II.A.3.cd (5 days) ~

2/ Total residu"l oxidants (TRO) shall not exceed a maximum instantaneous concentration of 0 ' mg/1. TRO shall not be discharged from Unit 1 condensers for more than two hours per day.

3/ The ambient ocean surface temperature snail not exceed 36.1 C(97 F) ss an instan-o taneous maximum at any point.

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A. EFFLUENT LLillTATIONSAND MONlTORliMG REQUIREMENTS During the period beginning on start of Unit 2 chlorination and lasting through expiration the permittee is authorized to discharge from outfall(s) serial number(s) 001 and 008 Condenser cooling water and auxiliary cooling water discharged to the Atlantic Ocean (includes other plant wastes) from Uni.ts 1 and 2, respectively.

Such discharges shall be limited and monitored by the permitted as Effluent Oiaract ristic Discharge Limitations specified below:

Mo>>itori>>g Requirements Instantaneous Measurement Sample Maximum Frequency Type Flovi-m3/Day (MGD) N/A Hourly Pump logs Discharge Temperature 0 C( 0 F) 45 (113) 1/ Hourly Recorders Temperature Rise C( F) 16.7(30) 1/ Hourly Recorders Total Residual Oxidants (mg/l) See Below 1/week Multiple Grabs Free Residual Oxidants (mg/l) See Below 1/week Multiple Grabs Mixing Zone Tempera ture C ( F)

Condenser t.'hlorine Addition 36.1(97) 2/

120 per unit Daily See Part III.I.

Log (minutes/day unit)

Discharge of intake screen backwash is permitted without limitation or monitoring requirements.

Free available oxidants shall .not exceed and average concentration of 0.2 mg/l and a maximum instantaneous concentration of 0.5 mg/1 at the outlet corresponding to an in-dividual condenser during any chlorination period. Neither free available oxidants (FAO) nor total residual oxidants (TRO) may be discharged from either unit condensers for more than two hours in any one day and not more than one unit may discharge FAO or TRO from its condensers at any one time. Additionally, TRO shall not exceed a maximum instantaneous concentration of 0.10 mg/1 at any time as measured in the dis-charge canal prior to discharge to the Atlantic Ocean.

Auxiliary cooling water systems for Units and 2 may be continuously chlorinated; how-1 I ever, TRO shall not exceed a maximum instantaneous concentration of 0.03 mg/1 prior to 0 4l entry into the Atlantic Ocean from this source. An intensive sampling program shall be instituted for at least 30 days following start of system chlorination to assure C')

compliance. In the event that TRO levels at the terminus of the discharge canal equal o or exceed 0.02 mg/I, permittee shall implement a minimization study as indicated in C)

Part III.J. hD C)

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~0 A. EFFLUENT LLiIITATIONSAYD MONITORING REQUIREMEN'I'8

~uringtheperiodbeginning on start of Unit 2 chlorination and lasting through expiration the permittee is authorized to discharge from outfall(slseriaI number(s) 001 and 008 Condenser cooling wa ter and auxiliary cooling water discharged to the Atlantic Ocean (includes other plant. wastes) from Units 1 and 2, respect.'vely.

(CONTINUED)

Not later than three years after promulgation or July 1, 1987, whichever is earlier, there shall discharge of .TRO. Notwithstanding the foregoing, the permittee ma be no upon successfully showing tne Director, Enforcement Division, that the facility must use chlorine for cooling water system biofouling control, discharge the minimum amount 0

of TRO necessary to operate the facility. In no case shall TRO be discharged for more than two hours per day nor shall the TRO exceed an instantaneous maximum of 0.1 m g!!l.. Not later than one year after promulgation, permittee shall submit a proposed implementation schedule to expeditiously provide controls necessary to comply with these requirements. Note: In the event that 3AT regulations for con-trctl of TRO or chlorine are promulgated in a manner inconsistent with the October 14, 1980, proposed guidelines, requirements of this paragraph will be modified consistent with the promulgated regulations (40 CFR -423).

Permittee shall investigate the availability of continuous recording TRO monitors with low levels of sensitivity (0.01 to 0.03 mg/l) and shall field test such unit(s) .

Not later than the start of Auxiliary cooling water system chlorination, permittee shall install a continuous TRO recorder, if an acceptable device is found, at the terminus of the discharge canal. Tn the event that a continuous recorder cannot be installed by start of chlorination, efforts shall continue (with progress reports submitted quarterly) and monitoring for TRO shall be 1/week on not less than six grab samples during daylight hours. Additional grab samples shall be conducted during period(s) of TRO discharge from condensers. lO

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Samples taken in compliance with the monitoring requirements. specified above V Q

shall be taken at the following location(s): Intake temperature and flow at ft H H plant intakes and all other parameters in the discharge canal prior to discharge I

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to the Atlantic Ocean, except that TRO and FRO shall also be monitored at the condense'r discharge for each Unit prior to entry into the plant discharge canal.

CD 1/ Under the follow llowing conditions the maximum discharge temperature shall be limited CD CD to 47. 2 C (117 F) and the temperature rise to 17. 8 (32): Condenser and! or circu-lating water pump maintenance, and (2) fouling of circulating water system. In the event that discharge temperature exceeds 45 C(113 F) permittee shall notify the Chief, >Jater Enforcement Branch in a manner similar too that ia provi rovided e for in or zn 2/ The ambient ocean surface temperature shall not exceed 36.1 C(97 F) as an in-stantaneous ma-. imum at any point.

A. EFFLUEN7 LL~IITATIONSAND MONITORING REQUIREMENTS During the period beginning on the effective date of this permit and lasting through expiration the permittee is authorized to discharge from outfall(sl serial number(s)s 002 1// L ow volume waste discharge to intake canal f rom Units 1 and 2 Such discharges shall be limited and monitored by. the permittee as specified below: r Effluent Oraract ristic Discharge Limitations Monitoring Requirements kg/day (lbs/day) Other Units ('mg/l )

Measurement Sample Daily Avg Daily Max Daily Avg Daily Max Frequency Tyl)e Flow-m3/Day (MOD) N/A Z/A N/A 're

/A 1/week Calculation Oil and Grease 41(90) 55(120) 15 20 1/week Grab To tal Suspended Solids 82 (180) 270 (600) 30 100 1/week Composite Prior to the start of discharges from Unit 2, quantity limitations shall be one-half of the limitation shown.

ln the event that .this waste is directed to an evaporation/percolation pond from which there is no discharge, these effluent limitations and monitoring requireme n ts wi no t samplers

'll apply.

The pH shall not be less than 6 ~ 0 standard units nor greater than 9 - 0 standard units and shall be monitored 1/batch on a grab There shall be no discharge of floating solids or visible foam in other than trace amounts.

Samples taken in compliance with the monitoring requirements specified above shall lre tak< n at the followirrr. Io<'at'on(s):.

discharge from the neutralization basin prior to mixing with any other waste n

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2 1/ Serial number assigned for identification and monitoring purposes. C I

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A. EFFLUENT LL~IITATIONSAND MOHAN:TORING REQUIREMENTS During the period beginning on the effective date of this permit and lasting through expiration the permittee is authorized to discharge from outfall(sl serial number(s) 003 1/ Pre-operational metal cleaning wastes from Unit 2 and similar cleaning operations discharged to discharge canal Such discharges shall be limited and monitored by the permittee as specified below:

Effluent Characteristic Discharge Limitations Monitoring 11equirements kg/batch(lbs/batch) Other Units (mg/1 )

Measurement Sample Daily Avg Daily i%lax Frequency Type Flow Detetmdnatlon(s) m3/Day (MGD)

Oil and Grease Total Suspended Solids 2/

2/

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N/A 15 30 W/A 20 100 1/day 2/

2/

Grab Composite

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Copper, Total 2/ 1.0 1.0 2/ Composite Iron, Total 2/ 1.0 1.0 2/ Composite Phosphorus as P 2/ 1.0 1.0 2/ Composite Hetal cleaning wastes shall mean any cleaning compounds, rinse waters, or any other water-borne residues derived from cleaning any metal process equipment. The quantity of pollut-ants discharged from this source shall not exceed the quantity determined by multiplying the flow of metal cleaning wastes times the concentrations listed above.

In the event that this waste is directed to an evaporation/percolation pond from which there is no discharge, these effluent limitations and monitoring requirements will not The pH shall not be less than apply'here 6. 0 standard units nor greater than 9. 0 standard units and shall be monitored on representative grab samples.

shall be no discharge of floating solids or visible foam in other than trace amounts. n (tg Samples taken in compliance with the monitoring requirements specified above shall be taken at the followi>>g ioeation(s): A discharge from the metal cleaning wastes treatment facility(s) prior to mixing M with any other waste stream. ~ J r

cy 1/ Serial number assigned for identification and monitoring purposes. cy o

2/ The total quantity of each pollutant discharged shall be reported. In no case shall the quantity discharged exceed the quantity determined by multiplying cy the volume of the batch of metal cleaning waste generated times the concen- CO trations noted above ('.e., 3.8 kg (8.3 lbs) of iron, copper and phosphorus; 57 kg (125 lbs) of oil and gre se; and 114 kg (250 lbs) of total suspended solids per million gallons of metal c~baning waste generated). The permittee shall also report the frequenc y of measurement used to adequately quantify the pollutants discharged. Total volume of wastewater generated and discharge shall be reported.

A. EFFLUENT LL~IITATIONSAND MONITORING REQUIREMENTS During the periodbcginning on the ef fective date of this permit and lasting tl'ro"gh exp the permittee is authorized to discharge from outfaH(s) serial number(s) 004 1/ S s t em Di.scharge Rad was t e System Radwaste to discharge canal from Units 1 and 2.

Such discharges shall be limited and monitored by the permittee as specified below:

.l Effluent Characteristic Discharge Limitations Monitoring Requirements kg/day (Ibs/day) Other Units ( mg/1)

Measurement Sample Daily Avg Daily Max Daily Avg Daily Max Frequency Type Flow-m3/Day (MOD) N/A . N/A N/A N/A 1/batch Calculation Oil and Grease 4-1(9.0) 5.5(12.0) 15 20 1/batch 2/ Grab Total Suspended Solids 8.2(18) 27.0(60.0) 30 100 1/batch Grab Prior to the start of discharges from Unit 2, quantity limitations shall be one-half of the limitation shown.

Xn the event that metal cleaning wastes are discharged through this serial number, limi-tations shall not exceed those provided for outfall serial number 003.

This discharge is regulated by the Nuclear Regulatory Commission under the provisions of its operating license and ofis the monitored and reported to the Nuclear Regulatory Commission.

No additional monitoring radiological aspects of this discharge are required h a e n The pH shaH not be less than N/A standard s ar units nor greater than 9 .0 standard units and shall be monitored 1/batch. '0 n 0 0 There shall be no dischar g e o f floating solids or visible foam in other than trace amounts W

'. nce with the monitoring requirements specified above shaH be taken at the foHowing iocarion(s):.

Samples taken in corn p lianc I

discharge from the radwaste s y stem 1/ Se rial number assigned for identific 2/ If ra d wastes is passed through a e g 'r ri prior to mixing f'lter andnd deminerali with month on representative batches. If data for a one-year period indicates that all oil and grease determinations are less than 10 mg/l, this any other waste stream.

ification and monitoring purposes.

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O 00 monitoring may be discontinued.

A. EFFLUENT LL~11'I'ATIONS AND MONITORING REQUlREMENTS During the period beginning on the effective date of this permit and lasting through expiration the permittee is authorized to discharge from outfall(s'I serial number(s) p05 1/ Dewatering wastes from Unit 2 construction discharged to intake or discharge canal Such discharges shall be!imited and monitored by the permittee as specified below:

J Effluent Charact ristic Discharge Limitations Monitoring Requirements bieasurement Sample Daily Max Daily Avg Frequency Type Flow-m3/Day (MGD) N/A N/A 2/month Calculation Total Suspended Solids (mg/1) 55 115 2/month Grab

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PQ There shall be no discharge of fioating solids or visible foam in other than trace amounts. 6 c

I Samples taken in compliance with the monitoring requirements specified above shall l>e taken at the folluwinr. ioi ation(s): 00 point(s) discharge. prior to entering the intake or discharge canals. C)

D 1/ Serial number assigned for identification and monitoring purposes.

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A. EFFLUENT LDIITATIONSAND MONITORING REQUIREMENTS During the period beginning on cf fee tive date and lasting through expiration the permittee is authorized to discharge from outfal)(sl serial number(s) 006 1// S ewage Treatment Plant Discharge Such discharges shall be limited and monitored by the permittee as specified below:

Effluent Oraract ristic Discharge Limitations Monitorirrg Requirements mg/1(except as noted)

Daily Avg. Daily Hax. Measurement Sample Frequency Type Flow-m3IDay (MGD) N/A 64 (0. 017) I/week Instantaneous 30 60 1/quarter Grab 2/

BOD5 Solids 60 l./quarter Grab 2/

Total Suspended 30 1/quarter Grab Fecal Coliform organisms/100 ml ll/A H/A In addition to the specific limits, the daily average effluent BOD5 and suspended solids concentrations shall not exceed 10 percent of the respective daily average influent con-centrations.

Effluent shall be aerobic at all times'he pH shall not be less t les than 6. 0 standard units nor greater than 9 ~ 0 standard units and shall be>>ro>>ito!ed 1/week. ~d 0 o a

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There shall be no discharge of floating solids or visible foam in other than trace amounts: g rt I Samples taken in comphance with the monitoring requirements specified above shall be 4<kerr ar t)re fiick)orvir'r> rrrcat o ri~):

o Sewage treatment plant discharge prior to mixing with any other waste streams.

1/ Serial numbe assigned for identification and monitoring purposes.

2/ Influent and effluent.

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A. EFFLUENT LLiIITATIONSAND <<ONITORING REQUIREMENTS Guringtheperiod beginning on effective date and lasting through expiration the permittee is authorized to discharge from outfall(sl serial number(s) 007 1/ Steam Cleanup System Bio+down to discharge canal f rom Units 1 and 2 Such discharges shall be limited and monitored by the permittee as specified below:

Effluent Charact ristic Discharge Limitations Monitoring Requirements Measurement Sample Daily Avg. Daily Max. Frequency Type Flow-m3/Day (MQD'i N/A il/t~ 2/ Calculation Oil and Grease (mg/l) 15 20 2/ Grab Total Suspended Solids (mg /l) 30 100 X/ Grab Total Iron (mg/l) 1.0 1.0 2/ Grab Total Copper (mg/l) 1.0 1.0 2/ Grab 0 o e C<1 There shall be no discharge of floating solids or visible foam in other than trace amounts-. 8 lD rrt H I

Samples taken in compliance with the monitoring requirements specified above shall be taken at the f(clio~!n~ locat'.o!I;):

point(s) of discharge prior to entering the discharge canal. 0 o 1/ Serial-number assigned for identification an and moni m t oring purposes.

2/ One dischar e event ne per discharge ev or one per ~eek whichever is more frequent. Total o volume of batch and period of discharge shall be reported o 00

Part II Page II-1 A. MANAGEMENT RE/VIREMENTS 1 ~ Discharge Violations All discharges authorized h'erein shall be consistent with the terms and conditions of this permit. The discharge of any pollutant more frequently than, or at a level in excess of, that identified and authorized by this permit constitutes a violation of the terms and conditions of this permit. Such a violation may result in the imposition of civil and/or criminal penalties as provided in Section 309 of the Act.

2. Change in Discharge Any anticipated facility expansions, production increases, or process modifications which will result in new, different, or increased discharges of pollutants, must be reported by submission of a new NPDES application at least 180 days prior to commencement of such discharge. Any other activity which would constitute cause for modification or revocation and reissuance of this permit, as described in Part II (8) (4) of this permit, shall be reported to the Permit Issuing Authority.

3. Noncompliance Notification

a. Instances of noncompliance involving toxic or hazardous pollutants should be reported as outlined in Condition 3c. All other instances of noncompliance should be reported as described in Condition 3b.

b. If for any reason, the permittee does not comply with or will be unable to comply with any discharge limitation specified in the permit, the permittee shall provide the Permit Issuing Authority with the following information at the time when the next Discharge Monitoring Report is submitted.

(1) A description of the discharge and cau.e of noncompliance; (2) The period of noncompliance, including exact dates and times and/or anticipated time when the discharge will return to compliance; and (3) Steps taken to reduce, eliminate, and prevent recurrence of the noncomplying discharge.

Part II Page II-2

c. Toxic or hazardous discharges as defined below shall be reported b t 1 hone within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after permittee becomes aware of the circumstances and followed up with information in writing as set forth in Condition 3b. within 5 days, unless this requirement is otherwise waived by the Permit Issuing Authority:

(1) Noncomplying discharges subject to any applicable toxic poollutant u an effluent standard under Section 307(a) of the Act;

{2) Discharges which could constitute a threat to human health, welfare or the environment. These include unusual or ex'.ra-ordinary discharges such as those which could result from bypasses, treatment failure or objectionable substances passing through the treatment plant. These include Section 311 pollutants or pollutants which could cause a threat to public drinking water supplies.

d. Nothing in this permit shall be construed to relieve the permittee from civil or criminal penalties for noncompliance.

4. Facilities Operation All waste collection and treatment facilities shall be operated in a manner consistent with the following:

a. The facilities shall at all times be maintained in a good working order and operated as efficiently as possible. This includes but is not limited to effective performance based on design facility removals, adequate funding, effective management, adequate operator staffing and training, and adequate laboratory and process controls (including appropriate quality assurance procedures); and

b. Any maintenance of facilities, which might necessitate unavoidable interruption of operation and degradation of, effluent quality, shall be scheduled during noncritical water quality periods and carried out in a manner approved by the Permit Issuing Authority.

c. The permittee, in order to maintain compliance with this permit shall control production and all discharges upon reduction, loss, or failure of the treatment facility untii the facility is restored or an alternative method of treatment is provided.

5. Adverse Impact ermittee Thee permx. shall take all reasonable steps to minimize any adverse impact to waters of the United States resulting from

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Part II Page II-3 noncompliance with any effluent limitations specified in this permit, including such accelerated or additional monitoring as necessary to determine the nature of the noncomplying discharge.

6. Bypassing "Bypassing" means the intentional diversion of untreated or partially treated wastes to waters of the United States from any portion of a treatment facility. Bypassing of wastewater's is prohibited unless all of the following conditions are met:

a. The bypass is unavoidable-i.e. required to prevent loss of life, personal injury or severe property damage;

b. There are no feasible alternatives such as use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment down time;

c. The permittee reports (via telephone) to the Permit Issuing Authority any unanticipated bypass within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after becoming aware of it and follows up with written notification in 5 days. Where the necessity of a bypass is known (or should be known) in advance, prior notification shall be submitted to the Permit Issuing Authority for approval at least 10 days beforehand, if possible. All written notifications shall contain information as required in Part II (A)(3)(b); and

d. The bypass is allowed under conditions determined to be necessary by the, Permit Issuing Authority to minimize any adverse effects.

The public shall be notified and given an opportunity to comment on bypass incidents of significant duration to the extent feasible.

Thi's requirement is waived where infiltration/inflow analyses are scheduled to be performed as part of an Environmental Protection Agency facilities planning project.

7. Removed Substances Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters shall be disposed of in a manner such as to prevent any pollutant from such materials from entering wate-s of the United States'

Part II Page II"4

8. Power Failures The permittee is responsible for maintaining adequate safeguards. to prevent the discharge of untreated or inadequately treated wastes during electrical power failures either by means of alternate power sources, standby generators or retention of inadequately treated effluent. Should the treatment works not include the above capabilities at time of permit issuance, the permittee must furnish within six months to the Permit Issuing Authority, for approval, an implementation schedule for their installation, or documentation demonstrating that such measures are not necessary to prevent discharge of untreated or inadequately treated wastes. Such documentation shall include frequency and duration of power failures and an estimate of retention capacity of untreated effluent.

9. Onshore or Offshore Construction This permit does not authorize or approve the construction of any onshore or offshore physical~ structures or facilities or the undertaking of any work in any waters of the United States.

B. RESPONSIBILITIES

l. Right of Entry The permittee shall allow the Permit Issuing Authority and/or authorized representatives (upon presentation of credentials and such other documents as may be required by law) to:

a. Enter upon the permittee's premises where an effluent source is located or in which any records are required to be kept under the terms and conditions of this permit;

b. Have access to and copy at reasonable times any records required to be kept under the terms and conditions of this permit;

c. Inspect at reasonable times any monitoring equipment or monitoring method required in this permit;

d. Inspect at reasonable times any collection, treatment, pollution management or discharge facilities required under the permit; or

e. Sample at reasonable times any discharge of pollutants.

Part II Page II-5

2. Transfer of Ownership or Control A permit may be transferred to another party under the following conditions:

a. The permittee notifies the Permit Issuing Authority of the proposed transfer;

b. A written agreement is submitted to the Permit Issuing Authority containing the specific transfer date and acknowledgement that the existing permittee is responsible for violations up to that date and the new permittee liable thereafter.

Transfers are not effective if, within 30 days of receipt of proposal, the Permit Issuing Authority disagrees and notifies the current permitttee and the new permittee of the intent to modify, revoke and reissue, or terminate the permit and to require that a new application be filed.

3. Availability of Reports Except for data determined to be confidential under Section 308 of the Act, (33 U.S.C. 1318) all reports prepared in accordance with the terms of this permit shall be available for public inspection at the offices of the State water pollution control agency and the Permit Issuing Authority. As required by the Act, effluent data shall not be considered confidential, Knowingly making any false statement on any such report may result in the imposition of criminal penalties as provided for in Section 309 of the Act (33 U.S.C. 1319) ~

4. Permit Hodification After notice and opportunity for a hearing, this permit may be modified, terminated or revoked for cause (as described in 40 CFR 122.15 et seq) including, but not limited to, the following:

a. Violation of any terms or conditions of this permit;

b. Obtaining this permit by misrepresentation or failure to disclose fully all relevant facts;

c. A change in any condition that requires either temporary interruption or elimination of the permitted discharge; or

d. Information newly acquired by the Agency indicating the discharge poses a threat to human health or welfare.

0~ ~0 Part II Page II-6 If the permittee believes that any past or planned activity would be cause for modification or revocation and reissuance under 40 CFR 122.15 et seq, the permittee must report such information to the Permit Issuing Authority. The submission of a new application may be required of the permittee.

5. Toxic Pollutants a, Notwithstanding Part II (B)(4) above, if a toxic or prohibition (including any schedule of compliance effluent'tandard specified in such effluent standard or prohibition) is established under Section 307(a) of the Act for a toxic pollutant which is present in the discharge authorized herein and such standard or prohibition is more stringent than any limitation for such pollutant in this permit, this permit shall be revoked and reissued or modified in accordance with the toxic effluent standard or prohibition and the permittee so notified.

b. An effluent standard established for a pollutant which is injurious to human health is effective and enforceable by the time set forth in the promulgated standard, even though this permit has not as yet been modified as outlined in Condition 5a.

6. Civil and Criminal Liability Except as provided in permit conditions on "Bypassing", Part II (A) (6), nothing in'this permit shall be construed to relieve the permittee from civil or criminal penalties for noncompliance.

7. Oil and Hazardous Substance Liability Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties to which the permittee is or may be subject under Section 311 of the Act (33 U.S.C. 1321).

8, State Laws Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties established pursuant to any applicable State law or regulation under authority preserved by Section 510 of the Act,

Part II Page II-7 0 Property Rights The - s"uance o tl is permi" does not convey any property rights e;.ther real or personal property, or any exclusive prxvxleges,'or does it a tho"i"e any injury to private property or any invasion of personal rights, nor anv in ingement o Federal> State, or local laws or regula ions. 1

10. Seve:ability Th.. provlsi.on . of tnis permit are seve-able, and if any provi. ion of thxs pe~at or the application of any provision of this permit to any c'1rcu..es tance, is held invalid, the application of such prov15LG . to 0 th..r circumstances, and the remainder of this permit sh ll no h>> a <<ecteo thereby ll. Pew- t Cont1nuatlon A new application shall be sihmitt d at least 180 days before the expiration date of this permit. Khere EPA is the Permit Issuing A\lthoritv the te~s and conditions of this permit are automa" ically continued 'n accordance with <0 CFR 1'22'5, provided that the permittee has submitted a tim. ly and su ficient application for a renewal permit and he Pe=,it Issue.irg Authority is unable through no fault of the per ... tte.. to issu. a ne~ permit before the expiration date.

C. HONI'iORING AND REPORTDlG

1. Represent tive Sampling Samples and measurements taken as required herein shall be re"r..sentative of the volume and nature of the monitored discharge.

Reporting Monitoring results obtained during each calendar month hall be summarized for each month an.". reported on a Discharge Monitoring Report Form (KPA tlo. 3320-1). Forms shall be submitted a" the end of each calendar quarter. and shall be postmarked no later than the 2Pth day of the month following the encl of the quarter. The first report is due by the 2Sth day of the month following the first full quarter after the effective date of this permit.

0~

Part II Page II-8 Signed copies of these, and all other reports required herein, shall be submitted to the Permit Issuing Authority at the following address(es):

Permit Compliance Branch Environmental Protection Agency Region IV 345 Courtland Street, N.E.

Atlanta, Georgia 30365

3. Test Procedures Test procedures for the analysis of pollutants shall conform to all regulations published pursuant to Section 304(h) of the Clean Mater Act, as amended (40 CFR 136, "Guidelines Establishing Test Procedures for the Analysis of Pollutants" ).

4. Recording of Results For each measurement or sample taken pursuant to the requirements of this permit, the permittee shall record the following information:

a. The exact place, date, and time of sampling;

b. The person(s) who obtained the samples or measurements;

c. The dates the analyses were performed;

d. The person(s) who performed the analyses;

e. The analytical techniques or methods used; and

f. The results of all required analyses.

5. Additional Monitoring by Permittee If the permittee monitors any pollutant at the location(s) designated herein more frequently than required by this permit, using approved analytical methods as specified above, the results of such monitoring shall be included in the calculation and reporting of the values required in the Discharge Monitoring Report Form (EPA No. 3320-1). Such increased frequency shall also be indicated.

Part II Page II-9

6. Records Retention The permittee shall maintain records of all monitoring including:

sampling dates and times, sampling methods used, persons obtaining samples or measurements, analyses dates and times, persons performing analyses, and results of analyses and measurements. Records shall be maintained for three years or longer if there is unresolved litigation or if requested by the Permit Issuing Authority.

D. DEFIHITIOhS

1. Permit Issuing Authority The Regional Administrator of EPA Region IV or designee.

2, Act "Act" means the Clean Mater Act (formerly referred to as the Federal Mater Pollution Control Act) Public Law 92-500, as amended by Public Law 95-217 and Public Law 95-576, 33 U.S.C. 1251 et seq.

3. Mass/Day Measurements

a. The "average monthly discharge" is defined as the total mass of all daily discharges sampled and/or measured during a calendar month on which daily discharges are sampled and measured, divided by the number of daily discharges sampled and/or measured during such month. It is, therefore', an arithmetic mean found by adding the weights of the pollutant found each day of the month and then dividing this sum by the number of days the tests were reported.

This limitation is identified as "Daily Average" or "ifonthly Average" in Part I of the permit and the average monthly discharge value is reported in the "Average" column under "Quantity" on the Discharge Monitoring Report (D~E).

b, The "average weekly discharge" is defined as the total mass of all daily discharges sampled and/or measuxed during a calendar week on which daily discharges are sampled and/or measured divided by the number of daily dischaxges sampled and/or measured during such week. It is, therefore, an axithmetic mean found by adding the weights of pollutants found each day of the week and then dividing this sum by the number of days the tests were reported. This limitation is identified as "Weekly Average" in Part I of the permit and the average weekly discharge value is reported in the "Haximum" column undex uQuantity" on the DlfR.

c, The "maximum daily discharge" is the total mass (weight) of a pollutant discharged during a calendar day. If only one

~

sample is taken during any calendar day the weight of pollutant

(S il ~

OO Part II Page II-10 calculated from it is the "maximum daily discharge". Thxs limitation-is identified as "Daily Maximum," in Part I of the permit and the highest such value recorded during the is reported in the "Maximum" column under "Quantity".

reporting'eriod on the DMR.

4. Concentration Measurements

a. The "average monthly concentration>" other than for fecal coliform bacteria, is the concentration of all daily discharges sampled and/or measured during a calendar month on which daily discharges are sampled and measured divided by the number o d '1 d' g s sampled and/or measured during such mont (arithmetic mean of the daily concentration values). e ax y concentration value is equal to the concentration of a composite sample or in the case of grab samples is the arithmetic mean (weighted by flow value) of all the samples collected during d d Th average monthly count for fecal coliform d 'endar bacteria is the geometric mean of the counts for samples col ecte during a ca en ar month.

m This limitation is identified as "Honthly Average" or "Daily Average"II under I"Other Limits1I in I .

P art I o f the permit and the average monthly concentration value is reporte d un d er th e "Average" column under Quality 11 l on the DFE.

b, The "average weekly concentration," other than for fecal coliform

'a is the concentration of all daily discharges sampled and/or measured during a calendar week on which d ai, 1 y dzschar is g es are sampled and measured divided by the number of daily discharges sampled and/or measured during such week (arithmetic mean of t >e dail y concen dai ra i concentration values). The daily concentration value is 1 t the concentration of a composite sample or in 'n the case of grab samples is the arithmetic mean (weighted by flow value) oof all samples collected during that calendar day. The average kl t f r fecal coliform bacteria is the geometric mean of the counts for samples collected during a calendar wee . is limitation xs id enntified in PPart I oof thee permit the DNR, pe i i as "Weekly Average" under "Other Limits" and the average weekly concentration value is reported under the II"Maximum" column under IIQuality on TI 'l

c. The maximum daily ai y concentration" is the concentration of a llutan nt is discharged during a calendar day. It i is enti ie

'l po as "Dail ai y Maximum" a im under "Other Limits in Part I of o thee p ermit andd t h e h xg hest es such value recorded during the repor tin p eriod is reporte t d unnder II er the "Haximum" column under Quality on DMR.

~

Part II Page II-11 Other Measurements

a. The effluent flow expressed as H /day (HGD) is the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> average flow averaged monthly, It is the arithmetic mean of the total daily flows recorded during the calendar month.

Mhe e monitoring requirements for flow are specified in Part I of the permit the flow rate values are reported in the "Average" column under "Quantity" on the DHR.

b. Where monitoring requirements for pH, dissolved oxygen or fecal coliform are specified in Part I of the permit the values are generally reported in the "Quality or Concentration" column on the DMR.

6. Types of Samples a, Composite Sample " A "composite sample" is any of the following:

(1) Not less than four influent or effluent portions collected at regular intervals over a period of 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and composited in proportion to flow.

(2) Not less than four equal volume influent or effluent portions collected over a period of 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> at intervals proportional to the flow.

(3) An influent or effluent portion collected continuously over a period of 24 hours at a rate proportional to the flow.

b. Grab Sample: A "grab sample" is a single influent or effluent portion which is not a composite sample. The sample(s) shall be collected at the period(s) most representative of the total discharge.

7. Calculation of Means

a. A riithmetic me Mean: The arithmetic mean of any set of values is the summation of the individual values divided by the num berer of individual values.

b. Geometric Mean: The geometric mean of any set of values is the Nth root of the product of the individual values where N is equal to the number of individual values. The geometric mean is equivalent to the antilog of the arithmetic mean of the logarithms of the individual values. For purposes of calculating the geometric mean, values of zero (0) shall be considered to be one (1).

i ~4 l 'I

($

Part II Page II-12

c. Weighted by Flow Value: Weighted by flow value means the summation of each concentration times its respective flow divided by the summation of the respective flows.

8. Calendar Day

a. A calendar day is defined as the period from midnight of one day owever, for purposes of until midnight of the next day. Howeve t is permit, any consecutive 24-hour period that reasonably represents the calendar day may be used f samp ing.

1'r

4~ PART l Page I-11 permit No. FL0002 208 B. SCHEDULE OF COAIPLIANCE

1. The permittee shall achieve compliance vrith the effluent limitations specified for discharges in accordance with the folloving schedule:

a. All ef fluent limitations shall be met on ef f ective date or start of discharge

h. Aquatic monitoring program (Part III.F.)

(1) Implement Continuing (2) Annual Reports April 30 of each year

c. Discharge structure operation (Part III.G.)

(1) Operational scheme December 31, 1981 operation of Unit 2 condenser pumps

d. Thermal Plume lfonitoring (Part (1) Study Plan - Three months III.I.)

prior to fuel loading of Unit 2 (2) Report 15 months after commercial operation date of Unit 2 e ~ Auxiliary Cooling System Chlorine iiinimization (Part III.J)

(1) Implement Start of system chlorination (2) Status reports Quarterly (4 reports)

(3) Final Report - 15 months after implementation

2. No later than 14 calendar days follovving a date identified in the above schedule of compliance, the permittee shall submit either a report of progress or, in the case of specific actions being required by identified dates, a vaitten notice of compliance or noncompliance. In the latter case, the notice shall include the cause of noncompliance, any remedial actions taken, and the probability of meeting the next scheduled requirement.

4 ~ 0 Part III Page III-1 Permit No. FL0002208 PART III OTHER REQUIREMENTS A. There shall be no discharge of polychlorinated biphenyls com-pounds such as those commonly used for transformer fluid.

B. The company, shall notify the Regional Administrator in writing not later than sixty (60) days prior to instituting use of any

~

additional biocide or chemical used in cooling systems, other than chlorine, which may be toxic to aquatic life other than those previously reported to the Environmental Protection Agency.

Such notification shall include '.

l. name and general composition of biocide or chemical,

2. quantities to be used,

3. frequencies of use,

4. proposed discharge concentrations, and

5. EPA registration number, if applicable.

C. Plant stormwater which is uncontaminated by plant wastes may be discharged without limitation or monitoring requirements.

D. Intake screen backwash may be discharged without limitation or monitoring requirements.

E. All environmental monitoring reports submitted to the U. S.

Nuclear Regulatory Commission shall be submitted to EPA .

F. Permittee shall continue the approved non-ragiological aquatic monitoring program (revised continuation of existing program) which serve as St Lucie 1 operational and St. Lucie 2 pre-oper-

~

ational and operational. The program will continue for at least two years after Unit 2 begins commercial operation. After this period the program will be evaluated by the Permittee and EPA to assess the continued need or possible deletion and/or modifi-cation of the program. Reports shall be submitted annually not later than April 30 of the year following the reporting period.

G. Subsequent to the commercial operation date of Unit 2, heated water shall be discharged from the Unit 2 multiport discharge line when only one unit is operating. Periods of short-term, one-unit operation shall not be subject to this requirement.

Not later than December 31, 1981, a proposed operational scheme, including a definition of "short-term", shall be sub-mitted for approval by the Director, Enforcement Division and State Director to assure conformance with these requirements.

Part III Page III-2 Permit No. FL0002208 H. If an applicable standard or limitation is promulgated under sections 301(b) (2)(C) and (D), 304(b) (2), and 307(a) (2) and that effluent standard or limitation is more stringent than any effluent limitation in this permit or controls a pollutant not limited in this permit, this permit shall be promptly modi-fied or revoked and reissued to conform to that effluent standard or limitation.

I. Permittee shall implement a monitoring program to assure com-pliance with temperature limitations provided herein and with thermal requirements of the Florida Mater Quality Standards.

Such program to include field surveys, infrared thermal imagry overflights and/or other monitoring to assure compliance. A study plan shall be submitted for approval not later than three months prior to fuel loading of Unit 2 and shall be expedi-tiously implemented on approval. A report shall be submitted not less than 15 months after implementation.

J. Permittee shall conduct a chlorine minimization program for the auxiliary cooling water system if the TRO concentration levels at the terminum of the discharge canal during contin-uous chlorination of the auxiliary system(s) equal or exceed 0.02 mg/L. Such study if required, shall be conducted gen-erally in conformance with techniques and concepts published in Appendix A, KE. 68354, October 14, 1980, to the extent im-plementable on the auxiliary cooling system at the St. Lucie Plant. Implementation of the plan, if required, shall be no later than 30 days after the Permittee becomes aware that the concentration level of TRO equals or exceeds 0.02 mg/L. Brief status reports shall be submitted quarterly with the first report due at the end of the third full month following im-plementation of the study. A final report shall be submitted not less than the end of the fifteenth full month of the im-plementation.

4 ~ ~

Page .III-3 Permit No. FL0002208 K. Copies of reports submitted in accordance with Part shall be forwarded by the permittee as follows:

III.F.

Number of Co ies Addressee Director, Enforcement .Division, EPA(Atlanta)

Chief, Ecology Branch EPA(Athens)

Florida Dept. of Environmental Regulation (Tallahassee)

Assistant Director for Environmental Technology USNRC (Washington)

Regional Director, Fish and Uildlife Service (Atlanta)

Regional Director, National Harine Fisheries Service (St. Petersburg)

Additionally, two copies of all plans and reports submitted in accordance with Parts III. G, I and J shall be submitted to FLDER (Tallahassee) and USEPA (Atlanta) and one copy to EPA (Athens) .

LE The State of Florida Department of Environmental Regulation has certified the discharge(s) covered by this permit with conditions (Attachment B). Section 401 of the Act requires that conditions of certification shall become a condition of the permit. The monitoring and sampling shall be as indicated for those parameters included in the certification.

Any effluent limits, and any additional requirements, spec-ified in the attached state certification which are more stringent supersede any less stringent effluent limits pro-vided herein. During any time period which the more strin-gent state certification effluent limits are stayed or in-operable, the effluent limits provided herein shall be in effect and fully enforceable. (Note: Certification will be attached prior to permit issuance).

a L, i8 I tlat'j5B l A NPDES No. FL0002208 PLAN~

4 ~ ST. LUCXE NASTEWATER FLOh A UNIT gl 006 STP UNIT I2 DEWATERING 005 INTAKE WASTES CANAL NEUTRALIZATION BASXN 002 FLOOR DRAINS EVAPORATION/

CONSTRUCTION PERCOLATION AREA RUNOFF PONDS UNXT UNXT Sl I2 UNIT 62 STP METAL CLEANING WASTES 003 ~

DISCHARGE RADWASTE 004 CANAL DXSCHARGE UNIT "2 004 STEAM GENERATOR CLEAN-UP SYSTEM BLONDOWN 007 UNXT 52 UNXT jjl MULTIPORT PXPE DXFFUSER Y DXFl"USER 008 ATLANTIC OCEAN

PERMIT RATIONALE

~

ST. LUCIE NUCLEAR POWER PLANT UNITS 1 and 2 FLORIDA POWER A11D LIGHT COMPANY October 22, 1981 I. Applicable Regulations A. The proposed conditions provide for compliance with (1) Effluent Guidelines and Standards for the steam electric power generating point source category (40 CFR 423) as romul ated on October 8, 1974 (39 Federal Re ister 6 86 , and with ro osed guide-ines revisions published on October , 980 (45 FR 68328), for plant chemical wastes; and (2) a tentative determination under Section 316(b) of the Clean Hater Act for the plant cooling water intake; as well as, B. Provisions of the Florida Hater guality Standards (Chapters 17-3 and 17-4 Florida Administrative Code).

The receiving waters have been classified by the State of Florida as Class III - Recreation - Pro-pagation and Management of Fish and Wildlife - Sur-face waters.

II. Effluent Limitations A. Outfall Serial Numbers (OSN) 001 and 008 - Once through condenser cooling water and auxiliary cooling water:

1. Temperature: Discharge temperature of 45 C(113 F),

except under specific abnorma) opersting condi-tions when limitation is 47.2 C(117 F) an) tem8erature rise of 16.7 C(30 F) and 17.8 C (32 F), respectively. Limitations are as re-quested by the applicant and are supported by bio-sampling data. 'ogical

2. Total residual oxidants (includes total residual chlorine):

a. An instantaneous maximum limitation of 0. 1 mg/1 due to condenser chlorination for a maximum period of two hours per day per unit. Limi-tation is based on Water guality Standards requirements which are more stringent than effluent guidelines. Florida Standards (17-4.244(4) ) preclude a maximum pol lutant concentration within a mixing zone which exceeds the amount lethal to 50 percent of the test organisms in 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> (96-hr LC50) for a species significant to the indigenous

'quatic community. The 96-hr LC50 value for Blue Crabs of 0.10 mg/1 has been used to establish the effluent limit.

b. An instantaneous maximum limitation of 0.03 mg/1 due to continuous chlorination of auxiliary cooling systems has been included as a best professional judgement.

A minimization study is required levels from this source exceed 0.02 mg/1 if TRO at the terminus of the discharge canal.

c. Requirements of the October 8, 1974, ~romul-

~ated and October 14, 1980, ~ro osed regula-tions and a reopener provision have been included also.

OSN 4 1 d by ~)d 002 - Low volume wastes:

d Limitations are mm 4 )23.12(b)(3).

guantity limitations are computed using a waste flow of 0.72 MGD, based on historical records as from Unit 1.

OSN 003 4 1 d by ~)d

- Metal cleaning wastes: Limitations are 423.12(b)(d) osed 423.13(g), except that a best professional gu gement limitation for phosphorus of 1.0 mg/1 d 3 has been included'.

OSN b ~)

004 - Radwaste; d d Limitations are d

as required 423.12(b)(3) 1 volume wastes using a f ow of 0.07 MGD, based on historical records for Unit 1. NOTf: The radio-active component of this discharge )s regulated by the U. S. Nuclear Regulatory Commission and is not subject to NPDES permitting requirements.

Comments relative to the radioactive component of this discharge should be directed to NRC and may not be considered by EPA in its permitting decisions.

OSN 005 - Dewatering Wastes from Unit 2 Con-struction: Concentration limitations on total suspended solids are included based on best pro-fessional judgement and historical records.

Due to the highly variable nature of this waste flow, quantity limitations are not provided.

OSN 006 - Sewage treatment plant discharge:

Limitations are generally based on secondary treatment requirements (40 CFR 102) for do-mestic waste. However, the one-day maximum, limitations of 60 mg/1 each for total sus-pended solids and biochemical oxygen demand:

(BOD) proposed is extrapolated from the seven-day average limitation of 45 mg/1 presented in the regulations. This extrapolation was made to conform with the proposed monitoring frequency.

G. OSN 007 d

Quantity limitations are

~1d

- Steam cleanup system blowdown: Limi-not 40 CF included recycled) 423.12(

due to the vari-infrequent nature (normally and able flow of the waste stream.

H. Quantity Limitations: Quantity limitations are calculated as follows:

Quantity (lbs/day)=8.345 x Flow (HGD) x Allowed Concentration (mg/1) where: 8.345 is the appropriate conversion factor, flows are based on historical data from Unit 1 and information .provided by the applicant, and con-centrations (mg/1) are as provided in applicable subsections of 40 CFR 423.

I. Proposed Permit Period: Five years. The NPDES permit requires compliance with the most stringent requirements of either the yro-mulqated (October 8, 1974) or ro osed (Octo-er 14, 1980) regulations (40 FR 423.12, etc.).

Data on priority pollutants has been submitted from Unit 1. Samples can not be collected from Unit 2 waste sources since the Unit is not yet in operation. Evaluation of data submitted by the applicant for Unit 1 and expected effluent quality from Unit 2, have led the permit writer to the tentative conclusion that additional treatment for priority pollutants is not likely for any pollutants and that a full five-year permit should be issued. However, to assure that this judgement is correct, a reopener clause is included in the permit (Part III.H.)

in the event that more stringent requirements are ultimately promulgated by EPA.

ST. LUCIE NUCLEAR PLANT 316(b) Finding for Best Technology Available Section 316(b) of P.L.95-217 requires that the location, design, construction anR capacity of cooling water intake structures reflect the best technology available (BTA) for minimizing adverse environmental impacts. Decisions relating to BTA are to be made on a case-by-case basis using such factors as size and type of water body and relative magnitude of flow withdrawn for cooling (40CFR, Pt. 402). Through deliberations between Florida Power and Light Company (FPL) and several government. agencies, BTA was determined for the St. Lucie Nuclear Plant intake system prior to plant operation.

FINDINGS The 2-unit 1612 net NW St. Lucie Nuclear Plant is located on a 1130-acre site of Hutchinson Island, Florida approximately mid-way between Ft Pierce and St. Lucie inlets.

~ The nuclear plant is bound on the west by .the Indian River and on the east by the Atlantic Ocean.

The condenser cooling water is provided by a once-through circulating water system which consists of intake and discharge

pipes in the ocean linked by canals to the nuclear plant. The ocean intake for Units 1 and 2 is located 1200 ft from the Atlantic a

shoreline in a high energy/low impact area characterized by wat:er turbulence and shifting sand or sand-shell substrate with a lack of bottom cover or outcroppings. The unstable substrate precludes the establishment of macrophytes or attached benthic communities.

From the ocean intake point, water is drawn through 2 buried pipe-lines (I AD- 12.0 ft) at 10 fps to the intake canal. This 300-ft wide canal begins 450 ft west of the shoreline where it funnels the cooling water some 500 ft to the nuclear plant intake structures (bars and screens). Pumps at. the nuclear plant provide a design flow of 2290 cfs {5.62 x 106 m3/day) for condenser cooling through the nuclear plant. Approach velocities to each of 8 traveling screens are less than 1.0 fps. Traveling screen washings are sluiced to a trash pit where organisms and trash are collected for disposal.

The top of the ocean intakes {Figure 1) are situated approxi-mately 8 ft below the water surface at mean low water. A vertical section to prevent sanding and bottom organism migration and a velocity cap to minimize fish entrapment were installed for each pipe. Presently, with one unit operating, horizontal intake velocities are 0.5 fps; with both units, velocities will increase

to approximately 1.0 fps. The design of .the ocean intake is similar to that employed by Southern California Edison Company at their El Segundo fossil fuel plant. At El Segundo, 272 tons of fish were entrapped during the first year of operation when no velocity cap was used and the flow vectors entering the in-take were vertically downward. After installation of a velocity cap with maximum design flows of 3. 5 fps, only 15 tons of fish were entrapped in the following year (94.5% reduction) (USAFC, 1974). Velocity caps are designed to provide flow rate in a hori-zontal radial direction because fish are familiar with horizontal velocities, and they usually Mill tend to swim against a current even when their net movement is downstream. Vertical velocities, however, are not commonly found in nature, and a detection response mechanism does not seem to exist for them in fishes (USAEC, 1974) ~

The Florida Department of Natural Resources'iami Research Laboratory in conjunction with FPL conducted preoperational base-line environmental studies of the marine environment adjacent to the St. Lucie Nuclear Plant from September 1971 to July 1974

'n 1975, Applied Biology, Inc. continued the monitor'ing through 1980. Unit 1 was placed on-line in 1976, The nuclear plant was base loaded throughout 1977, 1978, 1979 and 1980. Monitoring information pertaining to entrapment of fishes and invertebrates over the years shows that:

o The primary commercial fishes in St. Lucie and Martin Counties are Spanish Mackerel, King Mackerel, and Blue-fish. During the past 5 years, only 5 Spanish Mackerel; 10 King Mackerel and 24 Bluefish have been collected in the intake canal by gill netting designed to determine accumulations of fishes and shellfishes in the canal ~

o The greatest yearly canal catch over the past 5 years was 1501 fish in 1980. Total estimated fish biomass lost to the Atlantic Ocean that year was 6818 kg or about 0.2% of the St. Lucie and Martin County commercial catches. A total of 121 shellfish weighing 42.5 kg was also collected during the same period.

o Five species of marine turtles are found along Hutchinson Island. The most common is the Atlantic loggerhead turtle followed by the green turtle, leatherback turtle, hawksbill turtle, and the Atlantic Ridley turtle. The leatherback turtle and the Florida population of green turtles are classified as endangered species by the Federal Government LCFR 41 (208):47180-47198; CFR 43:32,808], and all marine turtles are protected by Florida Statute 307.12; 1974.

o Total sea turtle entrapment in the St. Lucie intake canal over a 6-year period amounted to 572 loggerheads, 51 greens, 6 leatherbacks, 1 hawksbill, and 1 Atlantic Ridley. Annual entrapment of all 5 species has ranged from 0 to 173.

o Ichthyoplankton was generally abundant during the spring and summer of each year. The most common larval fishes were herrings and anchovies. Eggs and larvae collected averaged from 0. 13 to 5.50/m3 as compared to the baseline sampling of 0.23/m3. These concentrations are substantially lower than concentrations found in a more productive area, the upper Tndian River, where mean densities of eggs and larvae were 132.83/m3 (Applied Biology, Xnc. and Ray L.

Lyerly and Associates, 1980).

o,Average eg'g and larval populations in the intake canal (0.889 eggs/m and 0.080 larvae/m3) were lower than average populations found offshore.

o To put the impact of entrainment into perspective, an offshore boundary was determined for the region from which ichthyoplankton is potentially withdrawn by the nuclear

plant. The distance between the designated offshore boundary and the shoreline is 3500 m and the average depth is 9. 2 m for a calculated cross-sectional area of 32,200 m 2 The percentage .loss estimates from 1976 through 1980 for fish eggs ranged from 0.13 to 0.50 and for fish larvae losses ranged. from 0.01% to 0

'8'cology Branch staff has been assessing power plant impacts over the past decade. There is nothing in the monitoring infor-mation reviewed that, in our opinion, warrants a detailed 316{b) study nor the continued monitoring of the intake for fishes and invertebrates. The design, capacity and location of the ocean in-take structure of the St. Lucie Nuclear Plant reflects, in our opinion, BTA for minimizing adverse impacts upon these organisms.

In view of t'h e declining world populations of marine turtles, i

the Hutchinson Island turtle rookery is of special importance in maintaining marine turtle populations. Because of the nuclear plant's location on Hutchinson Island and the protected status of sea turtles, it is our opinion that continued monitoring of turtle entrapment is necessary to fully evaluate intake location, design and capacity.

REFERENCE Applied Biology, Inc ~ and Ray L. Lyerly and Associates ~ 1980.

Biological and environmental studies at the Florida Power and Light Co. Cape Canaveral Plant and the Orlando Utilities Commission Indian River Plant. Vol ~ I ~

U.S. Atomic Energy Commission. 1974. Final EIS related to con-struction of St. Lucie Plant Unit 2, Florida Power and Light Company Docket No. 50-389.

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