illinois environmental protection agency q 1 5& f

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l, 8 - ILLINOIS ENVIRONMENTAL PROTECTION AGENCY Q 1 5& FNa 1021 NORTHr RA.GNo AVENUE EAST, P.O. Box 19276, SPRINCFIELD, ILUNoS 62794-9276

_6 THO.MAS V. SKINNER, DIRECTOR217/782-0610

,,;ksA.r'''e''- 'r*t1Sen nEiergy.Corpan 'L' LC 't '-' A ; '.4 ; '*ztA4UF ^-. 65CeSte rdOBU¢VI

Re: AmerGen Energy Company, L.L.C.Clinton Power StationNPDES PermitNo. IL0036919.Final Permit

Gentlemen:

Attachcd is the final NPDES Permit foryourdischarge. The Permit as issued covers discharge limitations,monitoring, and reporting requirements. The failure of you to meet any portion of the Permit could result incivil and/or criminal penalties. The Illinois Environmental Protection Agency is ready and willing to assistyou in interpreting any of the conditions of the Permit as they relate specifically to your discharge.

The Permit as issued is effective as of the date indicated on the first page of the Permit. You have the rightto appcal any condition of the Permit to the IllinoisPollution Control Board within a 35 day period followingthe issuannee date.

To assist you in meeting the self-monitoring and reporting requirements of your reissued NPDES permit, asupply of preprinted Discharge Monitoring Report (DMR) forms for your facility is being prepared. Theseforms wiilI be sent to you prior to the initiation of DMR reporting under the reissued permit. Additionalinformation and instructions will accompany the preprinted DMRs upon their arrival.

Should you have questions concerning the Permit, please contact Darin LeCrone at the telephone numberindicated above.

Vcry tntly yours,

c g*-n, . ,'Manager, Permit SectionDivision o I Water Pollution Control

TGM:SlPN:DEL,991 10501.dlk

Attachmnent: Final Permit

cc: RecordsCompliance Assurance SectionChampaign RegionPeco EnergyIllinois Power Company

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NPDES Permit No. IL0036919

Illinois Environmental Protection Agency

DiVision of Water Pollution Control

1021 North Grand Avenue East

Post Office Box 19276

X¢. s s v -i in - ew _ __ w r_ - .-9e

NATNAL- P.OLL'UtANT DISCHARGEELIMINATIO SYS TEM

._ _ _ _ _ . ._ _ __ ___. ............... _ _ _______ . _._v__ ., _ ' .-....... , ._ .-. -, : _ _ ..- .= _ _

Expiration Date: April 30, 2005 Issue Date: April 24, 2000Effective Date: May 1, 2000

Name and Address of Permittee:

AmerGen Energy Company, LL.C.965 Chesterbrook BoulevardWayne, Pennsylvania 19087-5691

Discharge Number and Name:

Facility Name and Address:

Clinton Power Station'Route 54 East, P.O. Box 678

Clinton, Illinois 61727(DeWitt County)

Receiving Waters:

Clinton Lake002A02802C02

,,._., 003

A03~__/004

005006007008009010011

.012013014015

Discharge FlumeSewage Treatment Plant EffluentRadwaste Treatment System EffluentActivated Carbon Treatment System EffluentWater TreatmentWastesActiviated Carbon Treatment System EffluentTransformer Area OiViWater SeparatorDiesel Generator Oil/Water SeparatorScreenhouse Intake Screen BackwashSafe Shutdown Service Water SystemStation Service WaterWater Treatment Pond Area RunoffUnit 2 Excavation Area RunoffSedimentation Pond RunoffEmployee Parking Lot and Adjacent Area RunoffBoathouse and Screenhouse Area RunoffScreenhouse and Pumphouse Area RunoffUltimate Heat Sink Dredge Pond Discharge

In compliance with the provisions of the Illinois Environmental Protection Act, Title 35 of Ill. Adm. Code. Subtitle C andlor Subtitle D. Chapter1, and the Clean WaterAct (CWA), the above-named pernittee is hereby authorized to discharge at the above location to the above-namedreceiving stream in accordance with the standard conditions and attachments herein.

Permittee is not authorized to discharge after the above expiration date. In order to receive authorization to discharge beyond the expirationdate, the permittee shall submit the proper application as required by the Illinois Environmental Protection Agency (IEPA) not later than180 days prior to the expiration date. *

Thomas G. McSwiggin. P.E. -Manager, Permit SectionDivision of Water Pollution Control

rGM:DEL:991 10501 .dlk

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Page 2


Effluent Limitations and Monitoring

LOAD LIMITS Ibs/dayDAF (DMFI

CONCENTRATIONLIMITS mg/A

; 30 DAY - AII _ 3 DAY .DLE,-a -. A SMP MPARAMETER !-VRAGE IF MAXIMUM! ^ -[I- ,RAGE-- _I,~,MAXIMSUM- FREQUENCY -lE.-a

-->-- -IFrom the effedve ed~of thispermit until the expiration datethe etuentofthefolldwin discharge(s)shall be monitored an imiled==o-at all times as oil

______Ouffall;:002.-Discharge.Flurne.-- -- - 9MGD5(nai)x - --

This discharge consists of:

1. Main Condenser Cooling Water2. Station Service Water*3. Sewage Treatment Plant Effluent4. Radwaste Treatment System Effluent5. Raw Water Treatment Systems Containment Impounded Waters6. Screenhouse Sump Discharges

Flow (MGD)

Approximate Flow

880 MGD (max.)85 MGD (max.)

0.093 MGD0.072 MGDIntermittentIntermittent

1/Week

1/Week

1NVeek

pH

Total Residual Chlorine*

See Special Condition 1

Estimate 24-Hour Total

Grab

See SpecialCondition 3

0.2

,- -. Total Residual Oxidant"

' /Temperature

0.05 I/Day Grab

See Special Condition 4 Continuous See SpecialCondition 4

'Station Service Water discharge consists of various pump and bearing cooling waters, various heat exchangers. chillers, and HVACsystem and fire protection system maintenance flush waters."See Special Conditions 3 and 6.*`*See Special Condition 6.

I

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*Page 3



LOAD LIMITS IbsldayDAF (DMF)

CONCENTRATIONLIMITS manl

. - , - SAM PALEY777.. .SAM DAILY. P I-PARAMETER- :---.-AVERAGE'v :::MAXIMUM-'. AVERAGE MAXIMUM -FREQUENCY t-T.'E

1 From the effe e'i date of this permit ur iil thr ' ir ion adte; the ef ouera f te folio igi r (sj' l be rri ni ed a n limited;-;4A---a, ~ hl ji

:Outfa11::A02' 7SeWageTreatfniit 'Pla.nt' . -- - ---.- 0.093 MGD

This discharge-consists of:

1. Extended Aeration Sewage Treatment Plarit Effluent2. Contact Stabilization Sewage Treatment Plant Effluent3. Simulator Refrigeration Unit Condensation -4. Ventilation and Service Air Compressor Condensate Discharge5. Equipment Maintenance Wastewaters6. Fire Protection and Service Water7. Laboratory Chemicals8. Activated Carbon Treatment System Effluent

Flow (MGD)

Approximate Flow

(DMF 0.0427 MGD)(DMF 0.05 MGD)

Intermittent*IntermittentIntermittentIntermittentIntermittent

1/Week

pH

BODs

Total Suspended Solids

See Special Condition 1

23.2

23.2

* 46.4

46.4

30

30

60

60

1/Week

1NVeek

1NVeek

24 hr. total

Grab

24 HourComposite

.24 HourComposite

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LOAD LIMITS Ibs/day CONCENTRATIONDAF (DMF) LIMITS mqA

- 30 'AY - AILY' 30 DAY DAILY - SAMPLE ' SAMPLE._._., ..PARAMEER ._-_,E .AVERAGE -. -,.<.tMUM ,AXIMUM _ M FREQUENCY .74-I-.YPE ,

.. Fro m the effecte date of this prmit un th exion datththeffowingdischarge(s)k shal be monitored aefd limited' *at all times as, folow .: ,,, , , -k - ;

Outfall: B02 - Radwaste Treatment System Effluent 0.072 MGD (max)

This discharge consists of:. Approximate Flow

1. Equipment Drain Subsystem2. Floor'drain Subsystem3. Laundry Waste Subsystem4. Chemical Waste Subsystems. Laboratory Chemicals Intermittent6. Equipment Maintenance Wastewaters Intermittent

Flow (MGD) Continuous

Total Suspended Solids 15 30 1/Week Grab*

Oil and.Grease 15 20 1NWeek Grab'

'See Special Condition 12.

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LOAD LIMITS lbsfdayDAF (DMF)

CONCENTRATIONLIMITS mail

---- `30 -DAILY-.D-A 30 )AYDPTL -L-E-;Si4MPLE -PA4RAMETE - AVERAGE MAXIMUMAVERAGE MMAXIMUM _F EQUENCY--TYPE_-

s tlr ri.V-n * rsw % .,d. -ft .p..rn.un..the.ef* .s.*. .4A*4+_w.Xofdt t e N,ef Al . V .. i*r.,a4Ll .l r C.b t.Vt o .- -i e S

* re_ r; 6>-.s..o' fs: : tw<.-r>..~r : foi' ''nhrg-(s )t s,^p ..t-.~.1- ~From the effective date of this permit until the :explration date,-the effluent oth o wi dsta es)shall be moruitored -nd innited.,-tia msa ~lW 'srr>w *- v s i>w ... sw~ v~i v n~-;ii-e ~<'_t''.V-:':.-XXft,'.:,+ ,,,'..tr :',=.'- :. \ el;S' ' {-f:.-_.-* -t s *-,> *i

Outfall: 003 - Water Treatment Wastes 0.288 MGD (max)

This discharge consists of:

1. Upflow filter backwash2. Reverse Osmosis Unit reject waste3. Mixed bed polishers off-spec. water -4. Sand filter backwash5. Auxiliary boiler blowdown6. Standby liquid control pump surveillance operation wastewater7. Equipment Maintenance Wastewaters8. Laboratory chemicals9. Reverse osmosis unit cleaning chemicals10. Activated carbon treatment system

Flow (MGD)

Approximate Flow

0.060 MGD (max)0.040 MGD (max)

Intermittent

Intermittent

1/Week

pH See Special Condition 1 l/Week

t- Total Suspended Solids

Total Dissolved Solids*

15 30 1/Week

24 hr. total

Grab

24 HourComposite

24 HourComposite

1/Week

*Monitor Only.

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LOAD LIMITS lbs/day CONCENTRATIONOAF (DMF) LIMITS man

- 30DAY--- DAILY- -SAMPLE:MPARAMETERI AVERAGEGE , MAXIMUM AVERAGE--MAXIMUM...FREQUENCY _ TYPE_

; .-1-From theeffectivedate of this permit until theexpirationate-the effluent of the f6oIowing discharge(s) shall be monitoed and limited, -wit alimes as fl ; ,-t-a~C*~~'t~?7>- i--L4-- - -; S-

Outfall: C02 - Activated Carbon Treatment System EffluentA03 - Activated Carbon Treatment System Effluent

Flow (MGD) I/Month' MeasureWhen

Monitoring

Oil and Grease 15 30 IlMonth' Grab

Benzene 0.05 I/Month Grab

Ethylbenzene 0.017 0.15 1/Month' Grab

Toluene 0.11 0.75 1JMonth Grab

Xylenes (total) 0.117 0.75 11Month' Grab

Total BETX*- 0.75 1/Month' Calculation

-- ;,,Priority Pollutants PNAs**- 0.1 I/Month' Grab

See Special Condition 15 for more frequent monitoring during first 3 months of operation.*-Benzene, Ethylbenzene, Toluene, and Xylenes."'Not required for discharges involving only gasoline. See Special Condition 16.

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Page 7


Effluent Limitations and Monitorina

LOAD LIMITS lbs/day CONCENTRATIONDAF (DMF) LIMITS mall

30 DAY - DAILY 30 DAY DAILY v SAMPLt- SAMPLE~- - `_PARAMETER AVERAGE MAXIMUM AVERAGE MAXIMUM -FREQUENCY- -TYPE -V...---.- =J*~* .- . - - . . .. - …. - - .:1. From theeff-ctived6fts itihexpirof date,theL of th followirng is hare(shabemonitoredandi~W-Ži icat.all times as follows 1 - -1 '- c

Outfall: 004 - Transformer Area Oil - Water Separator

This discharge consists of: Approximate Flow: Intermittent1. Machine shop area floor drains2. Paint storage room floor drains3. Oil tank area and turbine oil transfer pump area drains4. Transformer area drains5. Diesel generator area oil/Water separator6. Equipment maintenance wastewaters

Flow (MGD) 1/Month Estimate

Oil & Grease 15 20 I/Month Grab

Outfall: 005 - Diesel Generator Area Oil-Water Separator

This discharge consists of. Approximate Flow: Intermittent1. Diesel generator building floor drains2. Diesel fuel area drains3. Fuel unloading area drains4. Equipment maintenance wastewaters5. Transformer area oil/water separator

Flow (MGD) 1/Month EstimateOil and Grease 15 20 1/Month Grab

Outfall: 006 - Screenhouse Intake Discharges*

This discharge consists of: Approximate Flow- Intermittent1. Screenhouse intake screen backwash2. Warming line waters3. Service water backflow4. Raw water treatment system non-chlorinated sample waters

Flow (MGD) 1Wteek EstimateTotal Residual Chlorine** 0.2^* 1/Week Grab

'See Special Condition 5.**See Special Condition 6.

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Effluent Limitations and Monitorina

LOAD LIMITS Ibs/day CONCENTRATIONDAF (DMFI LIMITS moA

AR _ 30 DAY ___DAILY. . 30 DAY77 - DAILY-- SAMPLE-�-SAiPLEAVERAGE MAXIMUM AVERAGE MAXIMUM _ FREQUENCY TYPE-

UI he exiod.. te..t.- *- - - ---t......t.,f6 . e s .> z , --A',I Fror iti eff date oftiperrnit untI the expiration date; the effluent of the flowing discharge(s) shall be monitored and limitedat a times as f_..-,

....

Outfall: 007 - Safe Shutdown Service Water system

This discharge consists of: Approximate Flow: 35.0 MGD1. Equipment Cooling Water2. Diesel Generator Cooling Water3. Residual heat removal heat exchangers

Flow (MGD) Continuous

Total Residual Chlorine 0.05* 1/Week Grab

OSee Special Condition 6.

Outfall: 008 - Station Service Water

Flow (MGD) Estimate 24Hour Total

Total Residual Chlorine . 0.051* Daily When GrabDischarging

'This discharge consists of approximately 150,000 gallons of unheated pump bearing cooling waters, heat exchanger cooling waters, chillerwaters, and HVAC cooling waters from the service water system. and fire protection system waters. This discharge occurs only duringrefueling and other forced outages."*Measured as an Instantaneous maximum.-

Outfalls: 009 -Water Treatment Pond Area Runoff010 - Unit 2 Excavation Area Runoff011 - Sedimentation Pond Runoff012 - Employee Parking Lot and Adjacent Area Runoff013 - Boathouse and Screenhouse Area Runoff014 - Screenhouse and Pumphouse Area Runoff

See Special Condition 14 for discharges of Stormwater.

Outfall: 015 - Ultimate Heat Sink Dredge Pond Dis6harge

Flow (MGD) Estimate 24Hour Total

pH See Special Condition I 1/Week GrabTotal Suspended Solids 15 30 1/Week Grab

--See Special Condition 17.

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Special Conditions

SPECIAL CONDITION 1. The pH shall be in the range of 6.0 to 9.0.

SPECIAL-CONDITION -2 -Samples taken in complance with the effluent monitoring requirements-shall be taken at a point tepresentative :of the discharge, but prior to entry into the receiving waters.

SPECIAL CONDmON 3 Continuous monitoring throughout a representative chlorination period shall be performed once per week above-.the second drop structure in the discharge flume during the respective chlorination period allowing for lag time between the initiation of.

i ination and the point of samptingP If contiuous monitorg cannot be perf red, grab samples shall betaken in the discharge flumeat Ei miinute inteivals oir less duing the respective chlorination period to develop a chlorine concentration curve allowing for lag timebetween the initiation of chlorination and the point of sampling before the first grab sample is taken. The individual values and average(mean) values for each set of grab samples shall be reported including the time samples were collected. the time and duration of thechlorine dosing period plus the amount (lbs/day) of chlorine applied. For continuous chlorine monitoring, analytical data from only onerepresentative monitoring period each week need be reported on the monthly discharge monitoring report. For continuous monitoring, thechlorine concentration curve, the time of sampling, the time and duration of the chlorine dosing period plus the amount (lbslday) of chlorineapplied shall be reported. -

If the permittee is submitting Discharge Monitoring Reports electronically, the permiltee shall report the daily maximum and monthly averagechlorine concentrations on the DMR. All remaining data such as the chlorine concentration curve, time of sampling, time and duration ofdosing period, etc. as required by this special condition, shall immediately follow by mail.

If only service water is discharged to the discharge flume during a normal weekly monitoring period, a single grab sample may be takenfor determining compliance with TRC limitations. The single grab sample must be taken during a representative chlorination period. withthe duration of chlorination reported in the quarterly reports.

SPECIAL CONDITION 4. In accordancewith IPCB OrderPCB 92-142. the temperature of the discharge to Clinton Lake from Clinton PowerStation. as measured at the second drop structure of the discharge flume, shall be limited to a daily average temperature which (1) does

. ^ not exceed 99 degrees Fahrenheit during more than 90 days in a fixed calendar year running from January 1, through December31, and,-;z/(2) does not exceed 110.7 degrees Fahrenheit for any given day.

Compliance with the water temperature monitoring requirements shall be determined by reporting the daily average and daily maximumwater temperature of the discharge. The number of days the daily average temperature exceeds 99.0e F during the calendar year shallalso be reported.

If the permittee is submitting Discharge Monitoring Reports electronically, the permittee shall report the monthly average and daily maximumtemperatures on the DMR. Other required data should Immediately follow by mail.

SPECIAL CONDITION 5. .The intake structure shall be operated and maintained in a professional manner so as tominimize the possibleadverse impact on water quality which might result from the discharge of any collected debris or fish. So as to minimize possible adverseimpacts, for purposes of this permit, the intake structure operation and maintenance shall include, but not be limited to. the following:

a. Outer bar racks shall be routinely cleaned and collected. debris properly disposed.

SPECIAL CONDITION 6. Chlorine and Chlorine Dioxide usage shall be subject to the following limitations:

A. The limit of 0.2 for Total Residual Chlorine (TRC) measured as an instantaneous maximum, shall only apply to the intermittent useof chlorine. Intermittent usage is defined as the time when TRC is being discharged for two hours per day or less.

- B. During times of continuous chlorination, that is when TRC is discharged for more than two hours per day, the limit is 0.05 mg/I TRC.measured as an instantaneous maximum.

C. All uses of Chlorine Dioxide. such as for Macro or Microinvertebrate control, and regardless of duration, are subject to the dischargelimit of 0.05 mg/I TRO (Total Residual Oxidant), as an instantaneous maximum. TRO is defined as the sum total of TRC. chlorite. andchlorine dioxide.

D. Analysis for chlorite and chlorine dioxide shall be performed according to 4500 - CLO2 C. Amperometric Method I. as referenced inStandards Methods for the Examination of Water and Wastewater, Current Edition

_SPECIAL CONDITION 7. There shall be no discharge of polychlorinated biphenyl compounds (PCBs).

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Saecial Conditions

SPECIAL CONDITION 8. In accordance with IPCB Order PCB 92-142, Clinton Power Station is required to conduct a continuotTemperature Monitoring Program at site 1.5 that will be located at a submerged depth of 0.5 meters in Salt Creek approximately 100 fe,down the stream from the bottom of the spillway of Clinton Lakeduring the months of June, July, and August of each year, during the litof this permit. ResuIts shall be submitted to the'Ageinc~ybyj the followingIJainuaiy.

.--- SPECIAL-CONOITION 97Clitower tat n'sthermaldem~iitrationpursuant to 35 11t:Adm. Code 3O2'211(f) was approved by th* I:, it rlPCB and the-altemative thermal standards of Special Coni1ition 4 of this permit were granted by the IPCB (PCB3 92-142) after fulfillmer

-of the requirements of 35 III. Adm.- Code 302.211

_1-4* CiXQ MON I10. Clinton Power Station's demonstration regarding wvater Intake structure operations In accordance with Sectioi316(b) of the Clean Water Act under review by this Agency. Final action on this matter is pending.

SPECIAL CONDITION I1. Unused laboratory chemicals shall be discharged at a rate and in a manner so as not to upset normal operatioior cause pass through at the sewage treatment plant, or the Radwaste Treatment System.

SPECIAL CONDITION 12. A grab sample shall be taken during the discharge of each Radwaste Treatment System effluent holding tank.A grab sample shall be taken each time a tank Is discharged.

SPECIAL CONDITION 13. The permittee shall record monitoring results on Discharge Monitoring Report forms using one such form foreach discharge each month. Flow (MGD) shall be reported as a 30-day average and a daily maximum.

The completed Discharge Monitoring Report forms shall be received by the IEPA either electronically or by mal, no later than the 15thday of the following month, unless otherwise specified by the permitting authority. If DMRs are submitted electronically, a hard copyshall follow by mail. Discharge Monitoring Reports shall be mailed to the IEPA at the following address:

Illinois Environmental Protection AgencyDivision of Water Pollution Control1021 North Grand Avenue EastP.O. Box 19276Springfield, Illinois 62794-9276Attention: Compliance Assurance Section

SPECIAL CONDITION 14.

STORM WATER POLLUTION PREVENTION PLAN (SWPPP)

A. A storm water pollution prevention plan shall be developed by the permittee for the storm water associated With industrial activity atthis facility. The plan shall identify potential sources of pollution which may be expected to affect the quality of storm water dischargesassociated with the Industrial activity at the facility. In addition, the plan shall describe and ensure the Implementation of practiceswhich are to be used to reduce the pollutants in storm water discharges associated with industrial activity at the facility and to assurecompliance with the terms and conditions of this permit.

S. The plan shall be completed within 1B0 days of the effective date of this permit. Plans shall provide forcompliance with the terms'ofthe plan within 365 days of the effective date of this permit. Clinton Power Station shall make a copy of the plan available to theAgency at any reasonable time upon request.

C. The permittee may be notified by the Agency at any time that the plan does not meet the requirements of this condition. After suchnotification, the permittee shall make changes to the plan and shall submit a written certification that the requested changes have beenmade. Unless otherwise provided, the permittee shal have 30 days after such notification to make the changes.

D. The discharger shall amend the plan whenever there Is a change In construction, operation, or maintenance which may affect thedischarge of significant quantities of pollutants to the waters of the State or if a facility inspection required by paragraph G of thiscondition Indicates that an amendment Is needed. The plan should also be amended if the discharger is In violation of any conditionsof this permit, or has not achieved the general objective of controlling pollutants in storm water discharges. Amendments to the planshall be made within the'shortest reasonable period of time, and shall be provided to the Agency for review upon request.

The plan shall provide a description of potential sources which may be expected to add'significant quantities of pollutants to stormwater discharges, or which may result in non-storm water discharges from storm water outfalls at the facility. The plan shall include.

at a minimum, the following items:

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Snecial Conditions

1. A topographic map extending one-quarter mile beyond the property boundaries of the facility, showing: the facility. surfacewater bodies, wells (including injection wells), seepage pits, infiltration ponds, and the discharge points where the facility's storrrwater discharges to a municipal storm drain system or other water body. The requirements of this paragraph may b indcludecon the site map if appropriate? -*; --

l. -, The storm water nveyance and dish u e;--- --

--ii. An ouneofthestormwater drainage areas for each storm water discharge point:

iii. Paved areas and buildings;

iv. Areas used for outdoor manufacturing, storage, or disposal of significant materials, including activities that generatesignificant quantities of dust or particulates.

v. Location of existing storm water structural control measures (dikes, coverings, detention facilities. etc.);

vi. Surface water locations and/or municipal storm drain locations

vii. Areas- of existing and potential soil erosion;

viii. Vehicle service areas;

ix. Material loading, unloading, and access areas.

3. A narrative description of the following:

i. The nature of the industrial activities conducted at the site, including a description of significant materials that are treated.stored or disposed of in a manner to allow exposure to storm water;

ii. Materials, equipment, and vehicle management practices employed to minimize contact of significant materials withstorm water discharges;

iM. Existing structural and non-structural control measures to reduce pollutants in storm water discharges:

iv. Industrial storm water discharge treatment facilities;

v. Methods of onsite storage and disposal of significant materials;

4. A list of the types of pollutants that have a reasonable potential to be present In storm water discharges in significant quantities.

5. An estimate of the size of the facility in acres or square feet, and the percent of the facility that has impervious areas such aspavement or buildings.

6. A summary of existing sampling data describing pollutants in storm water discharges.

F. The plan shall describe the storm water management controls which will be implemented by the facility. The appropriate controls shallreflect identified existing and potential sources of pollutants at the facility. The description of the storm water management controlsshall include:

1. Storm Water Pollution Prevenlion Personnel - Identification by job titles of the individuals who are responsible for developing,implementing, and revising the plan.

2. Preventive Maintenance - Procedures for inspection and maintenance of storm water conveyance system devices such asoillvater separators, catch basins, etc., and inspection and testing of plant equipment and systems that could fail and resultin discharges of pollutants to storm water.

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-Page 12


Special Conditions

3. Good Housekeeping - Good housekeeping requires the maintenance of clean, orderly facility areas that discharge storm watiMaterial handling areas shall be inspected and cleaned to reduce the potential for pollutants to enter the storm watconveyance system.-

4. Spill Prevention and Response - Identification of areas where significant materials can spill into or otherwise enter the stdr-- 77=Water conveya hiraccompanying drainage points. Specific material handling procedures. -stora

._requiremeitsspill clean up equipment arid proceduresnshould te ideritified as appropriate. Internal nofificatfor spills of significant materials should be established

5. Storm Water Management Practices - Storrn water management practices are practices other than those which control tIsource of pollutants. They include measures such as installing oil and grit separators, diverting storm water into retenticbasins. etc. Based on assessment of the potential of various sources to contribute pollutants. measures to remove pollutan'from storm water discharge. shall be implemented. In developing the plan, the following management practices shall bconsidered:

i. Containment - Storage within berms or other secondary containment devices to prevent leaks and spills from enterinstorm water runoff;

ii. Oil & Grease Separation - Oil/water separators, booms. skimmers or other methods to minimize oil contaminated storrwater discharges;

iii. Debris & Sediment Control - Screens. booms, sediment ponds or other methods to reduce debris and sediment in storr.water discharges;

iv. Waste Chemical Disposal - Waste chemicals such as antifreeze, degreasers and used oils shall be recycled or dispose(of in an approved manner and in a way which prevents them from entering storm water discharges.

v. Storm Water Diversion - Storm water diversion away from materials manufacturing, storage and other areas of potentia( *storm water contamination;

vi. Covered Storage or Manufacturing Areas - Covered fueling operations, materials manufacturing and storage areas tcprevent contact with storm water.

6. Sediment and Erosion Prevention -The plan shall identify areas which due to topography, activities, or other factors, have ahigh potential for significant soil erosion and describe measures to limit erosion.

7. Employee Training - Employee training programs shall Inform personnel at all levels of responsibility of the components andgoals of the storm water pollution control plan. Training should address topics such as spill response, good housekeeping andmaterial management practices. The plan shall identify periodic dates for such training.

8. Inspection Procedures - Qualified plant personnel shall be identified to inspect designated equipment -and plant areas. Atracking or-follow-up procedure shall be used to ensure appropriate response has been taken in response to an inspection.Inspections and maintenance activities shall be documented and recorded.

G. The permittee shall conduct an annual facility Inspection to verify that all elements of the plan, including the site map, potential pollutantsources, and structural and non-structural controls to reduce pollutants in industrial storm water discharges are accurate. Observationsthat require a response and the appropriate response to the observation shall be retained as part of the plan. Records documentingsignificant observations made during the site inspection shall be submitted to the Agency In accordance with the reportingrequirements of this permit.

H. This plan should briefly describe the appropriate elements of other program requirements, including Spill Prevention Control andCountermeasures (SPCC) plans required under Section 311 of the CWA and the regulations promulgated thereunder, and BestManagement Programs under 40 CFR 125.100.

1. The plan is considered a report that shall be available to the public under Section 308(b) of the CWA. The permitlee may claimportions of the plan as confidential business information, including any portion describing facility security measures.

-J. The plan shall Include the signature and title of the person responsible for preparation of the plan and include the date of initialpreparation and each amendment thereto.

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Special Conditions

Constnuction Authorization

K. Authorization is hereby granted to construct treatment works and related equipment that may be required by the Storm Water Polluti,Prevention developed pursuant to this permit. -----

777-...-.

Ths Authorization isjissued subject to the following condition(s .---kf *i ±S ft, t= _ _,-. -

1. -I any statement orireitation is found to be incorrect, this authorization may be revokel and the upon waives.rihsthereunder.•-i' .....

2. The issuance of this authorization (a) does not release the permittee from any liability for damage to persons or property caused bor resulting from the Installation, maintenance or operation of the proposed facirities; (b) does not take into consideration the structur;stability of any units or part of this project; and (c) does not release the permittee from compliance with other applicable statutes cthe State of Illinois, or other applicable local law, regulations or ordinances.

3. Plans and specifications of all treatment equipment being included as part of the stormwater management practice shall be includeiin the SWPPP.

4. Construction activities which result from treatment equipment installation, including cleaning, grading and excavation activities whictresult in the disturbance of five acres or more of land area, are not covered by this authorization. The permittee shall contact the IEPAregarding the required permit(s).

REPORTING

L. The facility shall submit an annual Inspection report to the Illinois Environmental Protection Agency. The report shall include resultsof the annual facility inspection which is required by Part G of the Storm Water Pollution Prevention Plan of this permit. The reportshall also include documentation of any event (spill, treatment unit malfunction, etc.) which would require an inspection, results of theinspection, and anj subsequent corrective maintenance activity. The report shall be completed and signed by the authorized facility

.- ' employee(s) who conducted the inspection(s).

M. The first report shall contain informalioh gathered during the one year time period beginning with the effective date of coverage underthis permit and shall be submitted no later than 60 days after this one year period has expired. Each subsequent report shall containthe previous year's information and shall be submitted by October 31 of each year.

N. Annual inspection reports shall be mailed to the following address:

Illinois Environmental Protection AgencyBureau of WaterCompliance Assurance SectionAnnual Inspection Report1021 North Grand Avenue EastPost Office Box 19276Springfield. Illinois 62794-9276

'O. If the facility performs inspections more frequently than required by this permit, the results shall be included as additional informationin the annual report.

SPECIAL CONDITION 15. During the first month of operation of a new discharge (Outfalls C02 and A03), the sample frequency shall beonce per week. During the next two months the frequency shall be twice per month, and thereafter the frequency shall be once per month.Discharges of less than one week duration shall be monitored at least once per discharge event.

SPECIAL CONDITION 16. (Outfalls C02 and A03) Discharges of water which could have been impacted by any fuel other than gasoline* shall analyze the discharge for the following polynuclear aromatic hydrocarbons.

AcenaphtheneAcenaphthyleneAnthraceneBenzo(a)anthraceneGenzo(a)pyrene3,4 Benzofluoranthene

Jan-14-OZ 09:28am From-EXELON NUCLEAR +6305574319 T-568 P.016/017 F-512

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Snecial Condifions

Benzo(g.hl)peryleneBenzo(k)fluorantheneChryseneDibenzo(a,h)anthracene. .----.- -- - ----. -- --- -*'FRuoranthene ' .- .

~Fluorene * .. ... - . .

-Pyrene-

SPECAL OND~N 1. Pror o te Intiaion f dschrge at Outfall 015. the permiittee shafl submit a completed Form 2D for this outfall.If necessary, based an the additional information submitted, the Agency may revise or modify the permit In order to comply with the CleanWater Act.

*JU11-14-UZ U9:29am From-EXELON NUCLEAR

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lei The saet.A of'such. sa~se41se.'

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