ML20141F236

NPDES Permit IL0048151,issued to Comm Ed

ML20141F236
Person / Time
Site:	LaSalle
Issue date:	11/01/1984
From:	Mcswiggin T ILLINOIS, STATE OF
To:
Shared Package
ML20141F229	List: ML20141F222 ML20141F236
References
1538K, IL0048151, IL48151, NUDOCS 8604220495
Download: ML20141F236 (19)

Text

r:

o ATTAC391ENT A LASALLE COUNTY STATION NPDES PERMIT NO. ILOO48151 DATED NOVEMBER 1, 1984 3

t 1538K B604220495 PDR 860411ADOCK PDR 4: . 05000373 p

Illinois Environmental Protection Agency 2200 Churchill Road, Springfield. IL 62706 217/782-0610 Commonwealth Edison Company LaSalle County Station ,3, ,3 NPDES Permit No. IL0048151 .

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Final Permit Yy. > M N NOV 011984 5'gpd ubM Y goy s $'M Commonwealth Edison Company 5~ U d AC F 1'l

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72 West Adams Street $ DF s' -

Post Office Box 767 #.

Chicago, Illinois 60690 9i @4 Gentlemen:

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

The Pennit as issued is effective as of the date indicated on the first page of the Permit. You have the right to appeal any condition of the Permit to the Illinois Pollution Control Board prior to the effective date.

Should you have questions concerning the Permit, please contact Gary Cima at the telephone numLar indicated above.

Very truly youre, Thomas . McSwiggin, ..

Manager, Permit Section Division of Water Pollution Control

, TGM:TRK:GC:sf/916d,1-9 i

Enclosure:

Final Permit cc: USEPA/With Enclosure Region I/With Enclosure Permit Section Records Unit Consulting Engineer

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NPDES Pennit No. ILOO48151 1

Illinois Environmental Protection Agency gg I Division of Water Pollution Control 2200 Churchill Road _ NOV U 'Jd a E ,M

' . 3WiAlill d Springfield, Illinois 62706 grygg  ::/

rE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM $g_Ak14%' g Reissued (NPDES) Permit ~~

Expiration Date: June 1,1989 Issue Date: November 1,1984 Effective Date: December 1,1984 Name and Address of Permittee: Facility Name and Address:

Connonwealth Edison Company Connonwealth Edison Company 72 W;st Adams Street LaSalle County Station

• Post Office Box 767 Rural Route #1, Box 220 Chicago, Illinois 60690 Marseilles, Illinois LaSalle County Discharge Number and Name: Receiving Waters: Illinois River No. 001 Cooling Pond Blowdown No. 001(a) Demineralizer Regenerant Wastes No. 001(b) Sewage Treatment Plant Effluent No. 001(c) Wastewater Treatment System Effluent No. 001(d) Cooling Water Intake Screen Backdash (Cocling Pond)

No. 001(e) Unit 1 and 2 Radwaste Treatment System Effluent No. 001(f) Auxiliary Reactor Equipment Cooling Water No. 003 Illinois River Make-Up Water Intake Screen Backwash In compliance with the provisions of the Illinois Environmental Protection Act, Subtitle C Rules and Regulations of the Illinois Pollution Control Board, and the FWPCA, the above-named permittee is -

hereby authorized to discharge at the above location to the above-named receiving 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 expiration date, the permittee shall submit the proper application as rcquired by the Illinois Environmental Protection Agency (IEPA) not later than 180 days prior to the expiration date.

/ ( -

hmasG.McSwiggin,P.E.[

Manager, Permit Section Division of Water Pollution Control TGM:GC:sf/sp/766d

Page 2 NPDES Permit No. IL0048151 Effluent Limitaticas and Monitoring LOAD LIMITS CONCENTRATION lbs/ day LIMITS mg/l 30 DAY DAILY 30 DAY DAILY SAMPLE SAMPLE PARAMETER AVG. MAX. AVG. MAX. FREQUENCY TYPE

1. From the effective date of this permit until June 1,1989, the effluent of the following discharge (s) shall be monitored and limited at all times as follows:

Outfall(s): No. 001 Cooling Pond Blowdown

• This discharge consists of: Approximate Flow

1. Unit 1 and 2 Condenser Cooling Water 1773.2 MGD

2. Unit 1 and 2 House Service Water 92.1 MGD 3 Sewage Treatment Plant Effluent 0.025 MGD 4 Radwaste Treatment System Effluent Intermittent ,

5 Demineralizer Regenerant Wastes Intermittent ~

6. Wastewater Treatment System Effluent 0.1 MGD

7. Auxiliary Reactor Equipment Cooling Intermittent Water Flow Continuous -

pH See Special Condition No.1 2/ Month Grab Temperature See Special Condition No. 3 Continuous -

Iron (Total) 2.0 4. 0 2/ Month Grab

• Average cooling pond blowdown flow to the Illinois River is 86.0 MGD with a maximum blowdown flow of 144.1 MGD.

Page 3 NPDES Permit No. ILOO48151 Effluent Limitations and Monitoring LOAD LIMITS CONCENTRATION lbs/ day LIMITS mg/l 30 DAT DAILY 30 DAY DAILY SAMPLE SAMPLE PARAMETER AVG. MAX. AVG. MAX. FREQUENCY TYPE

1. From the effective date of this permit until June 1,1989, the effluent of the following discharge (s) shall be monitored and limited at all times as follows:

Outfall(s): No. 001(a) Demineralizer Regenerant Wastes Approximate Flow Intermittent Flow 1/ Week 24 Hour Total Total Suspended Solids IE 30 1/ Week 8 Hour Composite pH See Special Condition No. 1 1/ Week Grab Dutfall(s): No. 001(b) Sewage Treatment Plant Effluent Approximate Flow 0.025 MGD (DMF 0.037 MGD)

Flow Continuous pH See Special Condition No.1 1/ Month Grab B005 9.25 18.5 30 60 1/ Month 24 Hour Composite Total Suspended Solids 9.25 18.5 30 60 1/ Month 24 Hour Composi te Fecal Colifonn See Special Condition No. 4 1/ Month Grab i

. , _ . . . _ _ _ . . _ . ._ t _ . . _ . . . _ _ _ _ . . _ _ . - _ _ _ . . _ _ , _ _ _ _ _ _ . _ _ . _ . . . _

Page 4 NPDES Permit No, ILOO48151 Effluent Limitations and Monitoring LOAD LIMITS CONCENTRATION lbs/ day LIMITS mg/l 30 DAY DAILY 30 DAY DAILY SAMPLE SAMPLE I.WAMETER AVG. MAX. AVG. MAX. FREQUENCY TYPE

1. From tne effective date of this permit until June 1,1989, the effluent of the fo11cWing discharge (ri shall be monitored and limited at all times as follows:

Outfall(s): 001(c) Wastewater Treatment System Effluent This discharge consists of: Approximate Flow

1. Turbine Building Fire Sump Intermittent

2. Demineralizer Make-Up Water Filter Backwash Intermittent

3. Diesel Fuel Storage and Service Water Building Sump Intermittent *

4. Auxiliary Boiler Blowdown Intermittent

5. Off Specification Neutralizing Tank Effluent Intermittent

6. Zeolite Softener Regenerant Waste Intermittent Flow Continuous pH See Special Condition No.1 1/ Week Grab Total Suspended Solids 15.0 30.0 1/ Week 24 Hour Composite Oil and Grease 15.0 20.0 1/ Week Grab Outfall(s): 001(d) Cooling Water Intake Screen Backwash (cooling pond)

Adequate maintenance of the trash basket is required to prevent the discharge of floating deb;'is collected on intake screens back to the cooling pond.

Page 5 NPDES Parmit No. ILOO48151 Effluent Limitaticns and Monitoring LOAD LIMITS CONCENTRATION lbs/ day LIMITS mg/l 30 DAY DAILY 30 DAY DAILY SAMPLE SAMPLE PARAMETER AVG. MAX. AVG. MAX. FREQUENCY TYPE

1. From the effective date of this permit until June 1,1989, the effluent of the following discharge (s) shall be monitored and limited at all times as follows:

Outfall(s): 001(e) Unit 1 and 2 Radwaste Treatment System Effluent **

This discharge consists of: Approximate Flow

1. Equipment Drains in the Turbine Building, Auxiliary Building and Reactor Building Intermittent

2. Floor Orains in the Turbine Building, Radwaste Building, Auxiliary '

Building and Reactor Building Intermittent

3. Condensate Polisher Waste from the Turbine Building Intermittent

4. Laundry Waste Subsystem Intermittent Flow Continuous Total Flow Per Month pH See Special Condition No.1 1/ Week Grab Total Suspended Solids 15.0 30.0 1/ Week 8 Hour Composite Oil and Grease 15.0 20.0 1/ Week Grab Outfa11(s): 001(f) Auxiliary Reactor Equipment Cooling Water Approximate Flow Intermittent Flow Daily Continuous Outfa11(s): 003 Illinois River Make-Up Water Intake Screen Backwash Ad2quate maintenance of the intake screen system is required to prevent the discharge of floating debris collected on intake screens back to the Illinois River.

• • The radwaste treatment system is a recycle system with intermittent batch discharges to the cooling pond blowdown line.

Page 6 NPDES Permit No. ILOO48151 Special ~ Conditions

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

,-2 Samples taken in compliance with the effluent monitoring requirements ,

shall be taken at a point representative of the discharge, but prior I to entry into the receiving stream.

3. Discharge of wastewater from this facility must not alone or in combination with other sources cause the receiving stream to violate the following thermal limitations at the edge of the mixing zone which is defined by Section 302.211, Illinois Administration Code, Title 35, Chapter 1, Subtitle C, as amen 6d:

l A. Maximum temperature rise above natural temperature must not exceed j SoF (2.80C).

lB. Water temperature at representative locations in the main river shall not exceed the maximum limits in the fo11owir.3 table during more than #

1 ona (1) percent of the hours in the 12-month period ending with any month. Moreover, at no time shall the water temperature at such locations exceed the maximum limits in the following table by more than 3oF (1.70C). (Main river temperatures are temperatures of th:se portions of the river essentially similar to and following the same thermal regime as the temperatures of the main flow of the river.)

Jan. Feb. Mar. Apr. Mg June July & Sept. Oct. Nov. Dec.

oF 60 60 60 90 90 90 90 90 90 90 90 60 oc ~16 16 16 32 32 32 32 32 32 32 32 16 C. Compliance with the thermal effluent monitoring requirements shall be determined by reporting daily maximum water temperatures of the cooling pond blowdown discharge with monthly DMR's.

4. ' Tha daily maximum fecal coliform count measured once per month shall n:t exceed 400/100 al.

5 Th:re shall be no discharge of polychlorinated biphenyl compounds (PCBs).

6 There shall be no discharge of chemical metal cleaning wastes or associatea rinses unless this permit has been modified to include the new discharge.

7. The permittee shall reco.-d monitoring results on Discharge Monitoring Report Forms using one such form for each discharge each month.

Page 7 NPDES Pennit No. ILOO48151 Special Conditions The completed Discharge Monitoring Report forms shall be submitted to IEPA no later than the 28th day of the following month, unless otherwise specified by the permitting authority. Discharge Monitoring Reports shall be mailed to the IEPA at the following address:

Illinois Environmental Protection Agency Division of Water Pollution Control 2200 Churchill Road Springfield, Illinois 62706 Attention: Compliance Assurance Section Additionally, Discharge Monitoring Report forms shall be mailed to United States Environmental Protection Agency in Chicago on a quarterly basis. The permittee shall submit the reports as follows, unless otherwise specified by the permitting authority.

3 Period Report Due At U.S. Environmental Protection Agency Jan, Feb, Mar April 28th April , May, June July 28th July, Aug, Sept October 28th Oct, Nov, Dec January 28th Reports shall be addressed to United States Environmental Protection

. Agency as follows:

1 NPDES Compliance Unit

, United States Environaental Protection Agency Region V, 230 South Dearborn Street Chicago, Illinois 60604 The permittee shall notify the United States Environmental Protection Agency of any excursions as required by Standard Condition Number 12.

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Stendard Cenetiens for cause The fuhng of a request tg the pernwetse for e pernt snoef<ahon Defmtsene revocahon and reissuance. or verenaten or a notiteteten of paarwied changes or enacessed noncompeiance does not stay any perame conemen Act means the uhnos Enevonmental Ptoiecten Act Ch t il 12 m Rav Stat Se6.1001

' 1051 es Amended th Pree arty rights This perat does not convey any poperty revs of any sort, or are **bsare pr=dege Agency #reens the uhnois Enveonmental Protecten Agency (8) Outy to prowhee mformatson the permetoe shes furnesh to the Agency withm a Board eneens the annoe Poauhon Conees Board. reasonetpe hme. any eformaten eeuch the Agency may request to deferane whether cause emets for moefyirs revotwig and reissung. or teranahng this Clean Weeer Act (formerly referred to as the Federte Water Pomuten Contros Acg means permt or to determne comphance we the parmt The permettee snan asso fur-Puts L.92-500, as amended 33 U S C 1251 et seg rush to the Agency. upon request copes of records reaused to be kept by this pernt.

- fsPOSS Usational Pomutant Decharge Enmmenon Systemt means the natenal program for eseueng, moefying. revohmg and reissiang. termmebag. momforwig and enforemg permet and tg) lampesten and envy The perettee shaa amow an authonned representenve of imposing and enececing potreatment reauvements. under Sectone 307. 402. 318 and 40S ihe Agency. upon the presentaten of credoniens and other documents es me, he of the Clean Water Act regured by low, to USEPA ensans the Ufuted States Enveontmental Protecten Agency tal Enter upon the perettee's premmes where a reguleted facets or act=dy e locased or conducted or where recorda must be kept under the conetens Dedy Doeslierge means the escharge of a posutant nessured dunne a caender doy or any of this pernt.

24-hour poned that reasonstdy represents the calendar day for purposes of sampimg For posutants witn hemtatene espressed a umte of rness, the "dady discharge' es calculated as Ltd Have access to and copy, at reasonatWe twees, any records that snust be the notes eness of the posutant escharged over the day For posutents with hmstatens kept under the condetens of thes pernt.

emprused e emer unem of musurements. the "dady encharge e cascusated as the everage eneseurement of the pomutant over the day (c) Inspect at reasonsbes ames any facetes. : . _ :(includeg monitoreg and controt 7 . .. practices. or operatens regulated or requeed Manisnum Oedy Discharge Limitateen Idah messnumi means the fughese snowabee de4 under this perrnst and decharge W Sampie or montor at rueenabee emotfor the purpose of essunng permt Average asenthfy Descherge Lameteten (30 der everagel means the hghest snoweede cornphance or as othenese authonned by the Act any substances or everage of cady escharges over a caendar month cascuseted as the sum of as dedy es- parameters at any locaten charges snessured dunng a ceiendar month d=ided tw the nurpter of dady encharges i enessured durmg thee enonth. (1 00 heemterms and receres Average Wesedy Osecharge Larmtation 17 day averages eneans the highest acomebut tal $ampes and meewoments taken for the purpose of monetonng than be average of da4 encharges over a caender ween. calculated as the sum of et dady descharges representat=e of the monitored acavity rnessured durmg a casencar weet d=ided by the nurnber of dady escharges measured dunne that week (td The permettee shes retain records C.f as momtoring enformation, encludme as cohbranon and rnacionance recoros, and as ongmet senp chart record-Best Mr .  : Proctoses IBMPsi eneene schedueen of acevites preheitons of prac- mge for contmuove mentonne worumeneauori, comes of all reports hces, menevenance procedures. and other management precaces to prevent or reduce the requeed by thes perne. and records of as dets used te compante the pomuten of waters of the State BMPs a8se mctude treatment recueernents operenng pro- apptcaten for the pernwt, for a pened of at least 3 years from the dele of cedures, and practices to contros pont s<te runoH. spsage or leake, sludge or waste esposet this perrmt enessurement gepr31 of apphcstson Tews pered may be or esmage frorn raw matenal suwage entended by request of the Agancy at any twne Aleguet means a sampe of specifed weaume weed to make up a total cornpoede sampe (c) flecords of morwtonne adormenon shed enclude Gree Samoso means an andwidual sampie of et inese 100 mdheters conected at a rendomly- (1) The date. easct piece and twne of sempemg er eneewoments.

seec ed bene over a pened act onceedag 16 enmutes 42n The wid=idueHal who performed the samphng or measurerneats.

24 Hour Composste Semple sneans a cornt>neten of at least 8 sarnpe shquots of et least 100 meneters. conected at peredse enterva6s durmg the operassag hours of a Iacety over a 24- t3) The dateint anasyses were performed.

hour pered 44l The wid=eduenel who perforrned the analyses.

9 Hour Composite Sample means a comt>naten of at Isast 3 sempe saquets of at enest 100 mdieters. cohocted at permee etervase dunne the operat ng hours of a facety over an 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 6) The anser tical techniques or methods used and pureod 161 The resusts of such enssyses Flowe Preporttenel Camposete $ampie eneans a combmetson of tempte adequote of et least 100 meseters conected at penoes tretervan such that erther the twne meerval between each M IAceutonng en u st be conducted accordeg to test procedures approved shouet or the volume of each showot e proportense le orther the sweem flow at the twee of under 40 CI R Part 136 unless etner test procedures have been specifed Camphng or we 90tel stearn flow smce the cosectson of the previous shouet a true pernwt Where no test procedure under 40 CFft Part 136 has been approved the pernwesee must autwswt to the Agency a test method for III - Outy to sempty foe permsttee enust cornefy with as condstone of this pernwt approral The persruttee shot cohbrete and perform mantenance pro +

Any perrmt noncomphance conettutes e vioiseen of the Act and e grounde for cedures on at montonne and one6vecat answurnentowan at meervase to erdorcernent acton; for permet teranates% revoceDon assj reesuance. or ensure accuracy of enessureements maakticateen, or for denial of a perne renewed apphcocon The pernwetoe shes cosmply esth eHeuent standards or prohstpeone estschehed isneer Section 307(a) of we Clean Water Act for losic posutents wem tee eme provided m t%e reeuw (lll 89aerary requirement As apphcatene reports or mformaten submeted to tr e teams that estateen these etenderde or prohstpeons. even d the permet hee not yet Agency thee A agned and certded been moefed to mcorporate the reousrement tal Apphcoteen As pern=t opphcations shed be egned as fotows (2) Outy to reappsy if the poemense wishes to suntmue en octnrety roguesese try the permet etter the superation date of thee per*wt, the permettee #riust apply for aed lli For e eerpereteen by a precipal esecutwo officer of at least the obtain a new parmt if the pernwtsse sutumte a proper appmestion as requesd try level of vice president.

the Agency no Inter then 180 deys prehr to the especten date. true permet shas conheiue e fue force and eMact tente the feel Agency decasen en the appbcetion (2) For a partnerghsp er sole propesetershes tpy a general partner or has been made the propretor. respecimely or (3) Iseed to haft er reduce esthnty not e defense #t shes not be e defense for a per. 01 For e munes. penny. ttaee. pederes, se other pushe aseney. by erwttee e an enforcement acten that et would have treen necessary to hen or eether a pnntipal esecutree officer or rankeg edected officet reduce the pernetted actwefy e order to meetain c_ - e with the conetone of thee pernwt (tJ Asperse A8 reports requaed try permets or etter eformation requested by the Agerey shed be esgned by a person descreed a paragraph tal or by e IA) Outy to nutegete The pererwetae shes take as reemonsen steps to merwmese or pro- duly authorised represonest ve of that person A person e e duty authue.aod went any t'secharge et vetation of thas pernht whech h.s a reasonable leeishood of representatme only af adversesy affectwig hurnen heenth or the envegnenent (11 The authonaaten is enade en wnting by a person descreed en IS# Proper opersteen and ensintenance The pernettee ehen et et temos property paragraph tal and operate and moetem se facMes and systeme of trestrnent and centrol land related appwtonencesi whech are anstalled er used try the permMtee to scheve (2) The authermisten specefes either en mdividusi er a poseten respon-comphence adh the condations of trws permt Proper Operation and maintemence sable for IPO everse operetton of the facety from wherh the dis-mctudes eHeceve performantt edequaw funeng edequem operefor Steftmg and charge orgmans, such es e plant eneneger, superatendent or per-wenwns and adeousee lacerstory and process conwoe. mciueng approyees son of equ=eent responseety. and evakty assuranre procedures Thes proveun reluares the opershon of theck up, er auseery facenes. or ennder systerns eney when recessary to scheve cornphence (3) The wrdten author *astson es subemeted to the Agency with the contbtsont of the permet

m ATTACISIENT 5 ,

LASALLE COUNTY STATION NPDES PERMIT NO. ILOO48151 REQUEST FOR MODIFICATIONS DATED MAY 17, 1985 DENIAL BY ILLINOIS EPA DATED SEPTEMBER 19, 1985 1538K

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Commonwrith Edison 72 W:s1 Adams Strut Chicano Ares

, Address Reply to: Post Othee Box 767 n

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Chicago, Ilhnois 60690 May 17, 1985 NO.h[ k h'f RET, __

CERTIFIED MAIL Mr. Timothy R. Kluge P.E.

Manager. Industrial Termits Division of Water Pollution Control Illinois Environmental Protection Agency 2200 Churchill Road Springfield, Illinois 62706

Subject:

Commonwealth Edison Company LaSalle County Station NPDES #ILOO48151 s Request for NPDES Permit Mcdification

Dear Mr. Kluge:

We would like to request that the effluent concentration limits on total iron be dropped for outfall No. 001, Cooling Pond Blowdown.

Cooling Pond Makeup samples from the Illinois River have been routinely collected for total iron along with cooling Pond Blowdown samples. A comparison of these samples is presented in the attached table.

The Makeup data shows that the Illinois River has had con:entrations at least as high as 32.6 ppm total iron (5 March 85). The corresponding Blowdown data for this date was 30.5 ppm.

The total iron concentration limits on the NPDES Permit are for a Daily Maximum of 4.0 mg/l and a 30 day Average of 2.0 mg/1. From the attached table, total iron concentrations in the Illinois River are highly variable resulting in correspondingly variable blowdown concentrations.

These river variations in total iron concentration have resulted in NPDES Permit iron limitation noncompliances previously reported to the Illinois EPA. It is our position that NPDES total iron limits are therefore meaningless.

Should there be any further questions rdgarding this matter, please contact Paul M. Murphy at (312)294-4454.

S'. ac. .ly yours ,

i <

l .

N) i(* h Thomas E. Hemminger Director of Water Quality 7141E PMM:TEH:pp Attachment

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TABLE LASALLE COUNTY STATION COOLING POND MAKEUP AND BlafDOWN TOTAL IRON CONCENTRATIONS FROM 5 MAR 85 TO 23APR85 COOLING POND BLOWDOWN COOLING POND MAKEUP DATE TOTAL IRON, ;; > TOTAL IRON, ppm SMAR85 30.5 32.6 12 MAR 85 5.7 6.5 19 MAR 85 2.1 3.3 26 MAR 85 1.8 (Not Available) 02APR85 8.1 10.2 9APR85 9.9 6.6 16APR85 1.9 2.0 23APR85 1.2 1.3

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Illinois Environmental Protection Agency 2200 Church ("oad. 8prmgfield. IL 62706 217/782-0610 Connonwealth Edison Company LaSalle Count;y Station p@AF'h. 4 NPDES Pennit No. ILOO48151 Refusal of Modification T 9'p{9J .-

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SEP 191985 '

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Connonwealth Edison Company Post Office Box 767 Q

Chicago, Illinois 60690 N.x -b' '

l Gentlemen:

i The Illinois Environmental Protection Agency has reviewed the request to modify your NPDES Permit as stated in your letter of May 17,1985. The Agency

[ will not grant your request for modification for the following reasons:

t

( The present process waste streams entering the cooling pond (demineralizer

' regenerant wastes; waste water treatment system effluent; etc.) contain fron t

concentrations which are contributing to cooling pond blowdown f ron concentrations in excess of effluent standards. The analysis of the Illinois River water withdrawn for makeup to the LaSalle County Station cooling pond, which was prepared and submitted by Commonwealth Edison Company on June 29, 1981 for renewal of NPDES Permit No. IL0048151, indicated a total f ron concentration of 0.88 mg/1. IEPA water Illinois River at Marseilles, Illinois, quality for themonitoring years 1981 throughdata for1983 the indicated a maximum total f ron concentration of 4.2 mg/1. Since there is '

considerable discrepancy between the f ron concentrations reported by Connonwealth Edison Company for the Illinois River during March and April, 1985 and previously collected data, a more tubstantial assessment of fluctuating iron levels in the Illinois River at the LaSalle County Station intake will be required. An operational plan to reduce f ron input to the cooling pond from station process waste streams will be required prior to this Agency considering the applicability of 35 Ill. Adn. Code 304.103 to this case.

The decision not to grant this request is a final action by the Agency. The provisions of the Permit as issued remain in full force and effect. If you wish to appeal this decision, you must do so before the Illinois Pollution Control Board.

i '.

Illinois Environmental Prottetion Agency 2200 Churchill Road Springfield. IL 62706 Page 2 l

Should you have questions or comments, please contact Environmental Protection Specialist Gary Cima of sqy staff.

Verr +*"1y vn rs G /r omas G. McSwiggin, P.E.

Manager, Permit Section Division of Water Pollution Control TGM:GC:dks/2243e, 7-8 cc: USEPA Region 1 Permit Section Records Unit Compliance Assurance Unit l

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ATTACIBIENT C I.

LASALLE COUNTY STATION NPDES PERMIT NO. ILOO48151 REQUEST FOR MODIFICATIONS DATED DECEMBER 9. 1985 l

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December 9, 19 g __

CERTIFIED MAIL Mr. Thomas G. McSwiggin, P.E.

Manager, Permit Section Division of Water Pollution Control Illinois Environmental Protection Agency 2200 Churchill Road Springfield, Illinois 62706

Subject:

Modification of NPDES Permit No.

IL 0048151 for LaSalle County Station

Dear Mr. McSwiggin:

Commonwealth Edison hereby requests modification of the subject permit to allow the use of Direct Current Plasma (DCP) Optiacal Emission Spectrophotometry for determination of metals required under the permit's self-monitoring provisions. We understand that, in order for such  ;

permission to be granted, the equivalence of this methodology to existing approved methods must be demonstrated. To this end, please find attached a copy of the proposed method and a copy of a letter issued by the USEPA which states that such equivalency has been established. We have been informed that the documentation package supporting this is quite substantial and, therefore, have not obtained a copy to accompany this submittal; however, information on these documents can be obtained from the USEPA's laboratory in Cincinnati. If you have any questions regarding this, please contact Mr.

Gerald Erjavec of my staff at 312/294-4452.

Sincerely, i

kr Thomas E. Henuninger Director of Water Quality 84638 GME:TEH:dd Attachment bec: G. J. Diederich F. W. Walschot M. E. Di Ponzio File: 01-PER-H4 att.

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.s UNITED STATES ENVIRONMENTAL PROTECTION AGENCY OFFICE OF RESEARCH AND DEVELOPMENT ENVIRONMENTAL MONITORING AND SUPPORT LABORATORY  !

CINCINN ATI. OMIO 85268 June l'4, 1984 4

DATE: '

SUBJECT:

Nationwide Approval of Alternate Test Procedure (ATP)--Action Memorandum FROM: Robert L. Booth, Director Environmental Monitoring and Support Laboratory - Cincinnati TO: Courtney Riordan, Director Office of Monitoring Systems and Quality Assurance (RD'-680)

Parameters:

Barium, Total Platinum, Total Molybdenum. Total Chromium, Total Vanadium, Total Arsenic Total Lead, Total Gold, Total tron, Total 44ercury, Total Aluminum Total Seienium, Total Zinc, Total Cobalt, Total Copper, Total Calcium, Total Magnesium Total Sodium, Total Manganese, Total Titanium, Total Sliver. Total ttickel, Total Boren, Total Strontium Total Palladit.a. Total Tin, Total , Antimony, Total Cadmium, Total Beryllium, Total Recommendation: Approve Applicant: Mr. Larry Hoth Product Manager Atomic Emission Spectroscopy .

Beckman Instruments, Incorporated Campus Drive at Jamboree Boulevard Post Office Box 19600 Irvine, California 92713 Applicant Number: N82-0008 Method Prooosed: Direct Current Plasma Method for Trace Elemen(DCP)--Atomic t Analysis of Water Emission Spectrometric and Wastes Trace and inajor elements are determined by DC argon plasma spectroscopy.

Aqueous samples are pumped into a pneumatic nebultzer following a vigorous nitric acid digestion. The resultant aerosol is transported into a DC argon plasma source where excitation of the analyte atoms occurs. When. '

these excited atoms decay to a lower energy state, energy is emitted

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which is characteristic of the analyte atom. The intensity of the emitted radiation is 'directly in the linear response related range.to the analyte concentration when working

_ Technical Justification for Recommendation:

Beckman Instruments, Incorporated, has successfully comoleted our minimum required comparability data requirements as referenced in our attached correspondence of March 15, 1983, and February 1,1933, for nationwide approval of an ATP for " National Pollutant Discharge Elimination System" (NPDES) compliance monitoring. Comparability data were provid'$d from the analyses of samples by both the USEPA approved test procedure and the proposed DCP test procedure from f rve Standard Industrial Classification (SIC) codes most significant to the NPDES permits program. The SIC coces used in the comparability study for each element were as described in the correspondence of February 1,1983.

Our statistical analyses of the comparability data indicate that use of Beckman Instrument's DCP test procedure is comparable to the USEPA approved test procedure as referenced in 40 CFR 136 in both precision and -

accuracy for 27 out of the 29 metals identified above. The other two elements,.

cadmium and beryllium, demonstrated only small statistically signficant differences; however, in our opinion, these small differences would have a negligible impact on the NDPES compliance monitoring program.

Accordingly, we feel a recommendation of nationwide approval of the use of Beckman Instruments' DCP test procedure for those elements listed above is indicated.

Attachments (7):

Letter, dated Mar.ch 15, 1982, from Booth to Hamilton, Ref: Data Requirements (etter, dated January 12, 1983, from Bosshart to Lobring, Ref: OCP Methodology Letter, dated February 1,1983, from Booth to Bosshart, Ref: Equivalency Testing Letter, dated October 27, 1983, from Comtois to Lobring, Ref: Comparability Data Memo, dated December 20, 1983, from Gartside to Covert, Ref: Stattstical Analysis Memo, dated March la, 1984, from Martin to Lobring, Ref: Technical Review Letter, dated April 13, 1984; from Hoth to Covert, Ref: Revised DCP Method e

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