ML20093K776

NPDES Noncompliance Notification:On 840812,high Ph Excursion Occurred.Cause Unknown.Discharge Stopped.Clearwell Circulated Back to Equalization Tank & Neutralized.Discharge Continued

ML20093K776
Person / Time
Site:	LaSalle
Issue date:	10/09/1984
From:	Diederich G COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8410180163
Download: ML20093K776 (3)

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• Commonwealth Edison Oldb LtSalh County Nuclear Station Rural Route G1, Box 220 Marseilles, Illinois 61341 Telephone 815/357-6761 October 9, 1984 Mr. James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

In accordance with LaSalle County Station Unit 1 and Unit 2 Facility Operating License NPF-11 and NPF-18, Appendix B, Section 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 Superintendent LaSalle County Station GJD/FRL/SKS/kg-Enclosure xc: DVR Report NRC Resident Inspector INPO US NRC Document Control Desk 8410180163 841009 PDR ADOCK 05000373 1g $@

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T- I ' Commonwealth Edison os ' LaSalle County Nuct:ar Station m  ! Rur*.I R:ute #1, Box 220

'" Marseilles lilinois61341 Telephor.e 815/357-6761 September 17, 1984 U.[.EnvironmentalProtectionAgency 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 Rot.d springfield, IL 62706

Subject:

MPDES Noncomplicances for LaSalle County Nuclear Generating Station - Permit No. ILOO48151 In accordance with Standard Condition 12, we wish to submit the following notice of a noncompliance which is listed on the. attached table.

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

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J. Diederich l

Station Superintendent oJo/FRL/SKS/msh l

xc: Director of Water Quality, Environmental Affairs l

l Manager Nuclear Stations Division i

1 DOCUMENT-ID 0045h/

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LASALL:: COUNTY NUCLEAR GENERATING STATION N.P.D.E.8. PERMIT NO: ILOO48151 NONCOMPLIANCE REPORT DISCHARGE NUMBER B!g! DESCRIPTION: 001c tow Volume Waste Wastewater Treatment Facility

' PARAMETER Blg! PERMIT LIMIT: pH, 6.0 - 9.0 S.U.

NONCOMPLIANCB, RA_IE, AND DURATION: 9.2 S.U., 12 AUG 84, 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> 29 minutes CAUSE O_F NONCOMPLIANCE: The cause of the high pH excursion is unknown.

However, a sample of the Make Up Domineralizer Clean Sump collected at 1610 on 11 SEP 84 and analyzed at .1300 on 12 SEP 84 had an 8.9 S.U. PH. Therefore, the stamp may have been the source of the high pH water.

CORRECTIVE ACTION: The discharge was stopped. The clearwell was circulated back to the equalization tank and neutralized. The discharge was then continued. The Make Up Domineralizer Clean Sump pH will be monitored periodically for a time to aid in determining the source of any high pH water into the Sump.

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f DBIE R5000NI550 BS A VIOLATION: 13 SEP 84 BBIE INVESTIGATED: 13 StlP 84 I

DoctMENT ID 0045h/

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