ML20066A913

NPDES Noncompliance Notification:On 820920,total Iron in Outfall 001c Low Vol Waste Radwaste Discharge Tanks Exceeded Allowable Limit.Cause Unknown.Present Treatment by Evaporation Provides Treatment Efficiently

ML20066A913
Person / Time
Site:	LaSalle
Issue date:	10/25/1982
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20066A906	List: ML20066A905 ML20066A913
References
NUDOCS 8211060279
Download: ML20066A913 (1)

Text

-

I e

LASALLE COUNTY NUCLEAR GENERATING STATION N.P.D.E.S. PERMIT NO: ILOO48151 NONCOMPLIANCE REPORT  !

DISCHARGE NUMBER AND DESCRIPTION: Outfall 001c Lov Volume Waste Radwaste Discharge Tanks PARAMETER AND PERMIT LIMIT: Total Iron, 1.0 mg/l NONCOMPLIANCE, DATE, AND DURATION: 1.2 mg/1, 20 September 1982, 9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> CAUSE E NONCOMPLIANCE:

The exact cause of this noncompliance is unknown. Possible sources of this iron are from evaporator carryover, or acidic distillate from the evaporators, solubilizing iron. The pH of the radwaste discharge tanks, prior to neutral-ization, have tended to be acidic.

CORRECTIVE ACTION:

The present treatment by evaporation is providing expected treatment efficiency.

The station will continue monitoring this outfall to assess the need for addi-tional processing to improve iron removal.

8211060279 821025 PDR ADOCK 05000 S

DATE RECOGNIZED g A VIOLATION:

7 October 1982 DATE INVESTIGATED: 8 October lor?