ML20093D193

NPDES Noncompliance Notification:On 840530,sample of Mud Clean Sump Contained Ph Level of 11.2 Su,Exceeding Permit Limit of 9.0 Su.Sump Identified as Source of High Ph Water. Original Source Unknown.Discharge Stopped.Rept Encl

ML20093D193
Person / Time
Site:	LaSalle
Issue date:	06/19/1984
From:	Diederich G COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8407160170
Download: ML20093D193 (3)

Text

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, DMO Commonwe:llh Edison LaSalle County Nuclear Station Rural Route #1, Box 220 Marseilles, Illinois 61341 Telephone 815/357-6761 June 19, 1984 Mr. James G. Keppler Regional Administrator Region iII U.S. Nuclear Regulatory Connission 799 Roosevelt Road Glen Ellyn, IL 60137

Dear Mr. Keppler:

In accordance with LaSalle County Station Unit 1 Facility Operating Liccase NPF-ll, Appendix B. Seccion 3.2, we are submitting to you a copy of the NPDES noncompliance for LaSalle County Nuclear Generating Station Permit No. IL0048151.

G= J. Diederich Station Superintendent GJD/FRL/SKD/kg Enclosurc xc: DVR Report JUN20 M 8407160170 840619 II PDR ADOCK 05000373 S PDR fpy /

9 C:mmenw0cith Edis:n O' laSalle County Nuctear Station

< ,? RuralRoute #1 Box 220 V' Mars 611es. lilinois 61341 Telephone 815/357-6761 June 4, 1984 U.S. Environmental Protection Agency Region V, Enforcement Division ATTN: Chief, Compliance Unit 230 South Dearborn Street Chicago, IL 60604 Illinois Environmental Protection Agency Division of Water Pollution Control _

Compliance Management Unit '

2200 Churchill Road Springfield, IL 62706

Subject:

NPDES Noncompliances for LaSalle County Nuclear Generating Station - Permit No. IL0048151 In accordance with Standard Condition 12, we wish to submit the following notice of a noscompliance which is listed on the attached table.

If there tre any questions, please contact Steve Davis of my staff at (815) 357-6761, extension 487.

C G J. Diederich tation Superintendent GJD/FRL/SKD/bej xc: Director of Water Quality, Environmental Affairs Manager, Nuclear Stations Division 6____..__._.___.__._____..__ . . _ _ _ _ _ . _ _ _ . _ _ . _ _ _ _ . _ _ _ ___ . . _ _ _ _ _ _ _ . _ _ _ _ . _ _ _ _ _ _ _ _ _ . _ _ _ . _ - - . _ _ _ . _ . _ . _ _ . _ . _ _ _ _ _ _ _ _ .._. _._._________..-_.___________________________m

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LAS A" F COUhT! NUC' EAR GENrECING S40N N.P.D.E.S. PEE C NO: ILOO48151 NONCCHFLIANCE E.IPCRT .

DISr*WnCE NUMBER AND DESCRIPTION: 001c Wastewater Treatment Facility Effluent PARAMETER AND PE2MIT LIMIT: pH, 6.0 - 9.0 S.U. ,

NONCOMF1.1ANCE. DA*E. AND DURATION! 9.8 S.U. , 30 MAYS 4, unknown (believed to be less than 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />)

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CA"SE E NCNCOM?tIANCE: The MUD clean sump was sampled and analyzed for pH ,

on 30MAY84. The 11.2 S.U. result indicated the sump was the source of the high pH water. The original source is unknown.

CCRRIC" VE AC ION,: The discharge was stopped. The clearwell was circulated cack to the equalization tank and neutralized. Resamples were drawn at 1630 en 01JUN84. The results indicated the clearwell pH was 9.0 S.U. and the equalization tank was 7.6 S.U. Wastewater Treatment Facility operations were then returned to nor al. .

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W AY84 DA E EECOGNI2ED AS A VIOLATION:

30"AYA4 DA E IN"E.SE CA ED:

e e e e een . **e* . s.