ML20129C594

NPDES Noncompliance Notification:On 850604,Regenerative Wastes Solution Discharge 001(a) Grab Sample Registered Ph of 9.18 & 80 Ppm Total Suspended Solids,Exceeding Limits. Caused by Inadequate Mixing

ML20129C594
Person / Time
Site:	LaSalle
Issue date:	06/19/1985
From:	Diederich G COMMONWEALTH EDISON CO.
To:	James Keppler ILLINOIS, STATE OF, NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8507160264
Download: ML20129C594 (3)

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l LASALLE COUNTY NUCLEAR GENERATING STATION N.P.D.E.S. PERMIT NO: ILOO48151 NONCOMPLIANCE REPORT DISCHARGE NUMBER AND DESCRIPTION: 001(a) Regenerative Wastes Solution Discharge Tank PARAMETER AND PERMIT LIMIT: pH, 6.0-9.0 S.U.

Total Suspended solids, 30 ppa daily maximum NONCOMPLIANCE, DATE, AND DURATION:

9.18 S.U. pH, 04Jun85, approximately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 20 minutes.

80 ppe Total Suspended Solids, 04Jun85, approximately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 20 minutes CAUSE OF NONCOMPLIANCE:

Prior to discharging the OWM12T Regenerative Wastes Solution Discharge Tank, a grab sample was collected and analyzed for pH and total suspended solids. The 6.8 S.U. pH and 2.3 ppm total suspended solids results indicated the tank contents met NPDES permit limits. Therefore, the tank was discharged to the Cooling Pond.

However, it is believed the sample collected prior to discharge was not representative of the tank due to inadequate mixing. The mixing is believed to be inadequate since only low flow can be obtained through the transfer pumps.

CORRECTIVE ACTION:

The discharge was isolated. AIR l-85-67012 has been written to track the investigation of the course of low flow through the transfer pumps.

DATE RECOGNIZED AS A VIOLATION: 04JUN85 DATE INVESTIGATED: 04JUN85 DOCUMENT ID 0070h/0250A S

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?Q(6, Comm:nwrith Edison -

LaSalle County Nuclear Station ' I Ff r '" H 'S O Telephone 815/357-6761 Rural Rot,te #1, Box 220 F

. _ . . rii Marseilles, Illinois 61341 ' i ~~

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_1 June 19, 1985

- -313 f-3'1h 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-ll 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.

$ 8-G. J. Diederich Station Manager InSalle County Station GJD/FRL/SKS/kg Enclosure xc: ,NRC Resident Inspector INPO - Records Center US NRC Document Control Desk i

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Commonwrith Edison LaSzila County Nuclear Station Rural Route #1, Box 220 Marseilles, Illinois 61341 Telephone 815/357-6761 June 6, 1985 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. ILOO48151 In accordance with Standard condition 12, we wish to submit the following notice of 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 Station Manager GJD/FRL/SKD/jdp xc: Dir*ctor of Water Quality, Environmental Affairs Manager, Nuclear Stations Division ,

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l DOCUMENT ID 0070h/0250A ,

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