ML20115H698

Forwards PA Dept of Environ Protection NPDES Permit, Approving Use of Revised Worksheet for Calculating Net Total Suspended Solid Concentrations Discharged to Schuylkill River at Outfall 001,in Response to

ML20115H698
Person / Time
Site:	Limerick
Issue date:	07/16/1996
From:	Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9607230280
Download: ML20115H698 (3)

Text

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Station Support Department

• ** EPP 3.2

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PECO NUCLEAR n = = = co'"o "v Nuclear Group Headquarters 965 Chestertwook Boulevard A (JNIT Of PfCO [NERGY Wayne, PA 190875691 July 16,1996 Docket Nos. 50-352 50-353 i

License Nos. NPF-39 l NPF-85 l NPCES Permit No. PA0051926 ,

I i

I U.S. Nuclear Regulatory Commission i Attn: Document Control Desk l Washington, DC 20555

Subject:

Limerick Generating Station, Units 1 and 2 Changes to National Pollutant Discharge Elimination System Permit  ;

i Gentlemen- l l

This letter is being submitted in accordance with the Limerick Generating Station (LGS), Units 1 and 2, Environmental Protection Plan (EPP) Section 3.2, which stipulates that the NRC shall be notified within 30 days following the date of approval of a change to the National Pollutant Discharge Elimination System (NPDES) permit.

1 By letter dated July 5,1996, the Pennsylvania Department of Environmental Protection (PA DEP) l approved our request to utilize a revised worksheet for calculating net total suspended solid concentrations discharged to the Schuylkill River at Outfall 001. A copy of the PA DEP letter approving this NPDES permit revision is attached. The NRC was previously notified of our l request to establish these two (2) Internal monitoring points by letter dated June 18,1996.

If you have any questions or require additional information, please do not hesitate to contact us.

I Very truly yours, d4 G. A. Hunger, Jr.ga, b.

Director - Licensing Attachment cc: T. T. Martin, Administrator, Region 1. USNRC (w/ attachment) j N. S. Perry, USNRC Senior Resident inspector, LGS (w/ attachment) J b, 3. e j l 96df230280 960716 PDR ADOCK 05000352 S PDR

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, Pennsylvania Department of Environmental Protection i Lee Park, Suite,6010 1 555 North Lane  !

Conshohocken, PA 19428 JUL 0 51996  !

Southeast Regional Oflice 610 832-6130 Fax 610-832-6133 Mr. Robert M. Matty, Jr.

Engineer, Environmental Affairs PECO Energy Company 2301 Market Street P.O. Box 8699 Philadelphia, PA 19101-8699 Re: IW NPDES Permit No. PA 0051926 Limerick Generating Station Limerick Township Montgomery County

Dear Mr. Matty:

This is in response to your June 18,1996 letter requesting approval to use a revised worksheet for calculation of the net total suspended solids at Outfall 001.

We have completed our review of the proposed worksheet and hereby grant approval to use it.

Please substitute the revised worksheet for that worksheet included with your permit issued December 12,1994. Please direct any questions to the Permits Section of this office.

Sincerely, L . A. fi

/ Joseph A. Feola '

Regional Manager Water Management

Enclosure:

Master Worksheet Form cc: DRBC - Ron Rulon Limerick Township Mr. Newbold Operations Permits & Compliance Re 30 (KAL)177.31 in tq,a oppo,tunwarmative action empiover http>/www. den siate pa us ennted on ac<vcied eager (9

A ua 0-DETERMINATION OF TOTAL SUSPENDED SOLIDS (NET) WORKSHEET

1. Obtain a grab sample from Schuylkill River on four consecutive days and composite using the following formula:

Day one--7 % (35 ml) / Sampled by/ Date and Time Day twc 15 % (75ml) / Sampled by / Date and Time Day three- 27 % (135ml) / Sampled by / Date and Time Day four 51 % (255ml) -/ Sampled by / Date and Time

2. On the fourth day, initiate a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> composite sample of Outfall 001

/- Started by / Date and Time

3. On the f;fth day, retrieve the Outfall 001 composite sample .

/ Collected by / Date and Time

4. Analyze Schuylkill River composite for silica mg/l / Analyzed by / Date and Time

5. Analyze Outfall 001 composite for silica mg/l / Analyzed by / Date and Time 1

6. Determine concentration factor ( CF )

(Outfall 001 silica) / (River silica) = Concentration Factor

7. Analyze Schuylkill River composite for TSS mg/l / Analyzed by / Date and Time

8. Determine background TSS (River composite) x (Concentration Factor)

( )x( )= mg/l

9. Analyze Outfall 001 composite for TSS l mg/l / Analyzed by / Dete and Time  !

10. Determine Net TSS

( Outfall 001 Composite TSS ) - ( Background TSS )

( )-( )= mg/l NOTE: For computing averages for DMR reporting and for determining permit compliance, all

" less than zero results must be counted as zero values. l j