ML20134P693

NPDES Noncompliance Notification:On 850701,30-day Average for Total Suspended Solids Was 45 Ppm,Exceeding Limit of 15 Ppm.Caused by Discharge Containing 80 Ppm Total Suspended Solids.Regenerative Waste Solution Discharge Tanks Cleaned

ML20134P693
Person / Time
Site:	LaSalle
Issue date:	07/29/1985
From:	Diederich G COMMONWEALTH EDISON CO.
To:	James Keppler ENVIRONMENTAL PROTECTION AGENCY, ILLINOIS, STATE OF, NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8509090021
Download: ML20134P693 (3)

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LASALLE COUNTY NUCLEAR GENERATING STATION i 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: Total Suspended Solids, 15 ppm 30-day average NONCOMPLIANCE, DATE, AND DURATIbN:

45 ppm Total Suspended Solids 30-day average, OlJUL85, month of June CAUSE OF NONCOMPLIANCE:

The 30-day average limit was exceeded because of one discharge which contained 80 ppm total suspended solids. (A noncompliance report on this occurrence was submitted 06JUN85).

It is suspected that the high total suspended solids concentration was due to solids accumulation in the tank.

A sample collected prior to discharge indicated the tank met NPDES discharge limits. It is suspected that the sample was nonrepresentative due to inadequate mixing as a result of low flow through the transfer pumps.

CORRECTIVE ACTION:

The OWM03T Regenerative Wastes Solution Discharge Tank was drained and inspected. Since it was observed that solids had accumulated in the bottom of the tank, the tank was cleaned. The OWM12T Regenerative Wastes Solution Discharge Tank was also drained and inspected. Since solids had also accumulated in this tank, it is being cleaned.

The cause of low flow through the transfer pumps is still being investigated.

i I DATE RECOGNIZED AS A VIOLATION: OlJUL85 l

DATE INVESTIGATED: OlJUL85 8509090021 850729 PDR ADOCK 05000373 DOCUMENT ID 0070h/0250A S PDR l 6 t\\

• . Commonwealth Edison

/ , LaSaHe County Nuclear Station 1 Rural Route #1, Bcx 220 p 1 M ITT g g g,G 7

Marseilles, Illinois 61341 M Telephone 815/357-6761 g! -g" 9

ff f &(a ptO y }- J4 bL f ga y July 29, 1985 Mr. James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Commission T99 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

In accordance with InSalle 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 noncompliame for InSalle County Nuclear Generating Station Permit No. IL00h8151.

. A LM G.j . Diederich Station Manager LaSalle County Station GJD/FRL/SKS/kg Enclosure xc: NRC Resident Inspector INPO - Records Center US NRC Document Control Desk

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• N Commonw Cith Edison

,. .- c h LsSalle County Nuclzar Station Rural Route #1. Box 220

\ L/ Marseilles, illinois 61341

( Telephone 815/357 6761 July 5, 1985 U. S. Environmental Protection Agency .

Region V, Enforcement Division A1TN: Chief, Compliance Unit 230 South Dearborn Etreet .

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 subspit the following notice of noncompliance which is listed on the attached table.

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

~. f./ / W G/J. Diederich Station Manager GJD/FRL/SKD/msh sc: Director of Water Quality, Environmental Affairs Manager, Nuclear Stations Division ,

DOCUMENT ID 0070h/0250A

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