ML20023A722

NPDES Noncompliance Notification:On 820909,total Iron at Outfall 001c Low Vol Waste Wastewater Treatment Facility Exceeded Allowable Limit.Caused by Upset Ph Due to Unit 2 Const Activities.Work Request Initiated to Install Monitor

ML20023A722
Person / Time
Site:	LaSalle
Issue date:	09/29/1982
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20023A719	List: ML20023A718 ML20023A722
References
NUDOCS 8210190525
Download: ML20023A722 (1)

Text

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LASALLE COUNTY NUCLEAR GENERATING STE' ION N.?.D.E.S. PE10 FIT NO:

ILOO48151 NONCCMPLIANCE REPORT DISCHARGE NUMBER AND DESCRI? TION: Outfall 00lc Low Volume Waste Wastewater Treatment Facility PARAMETER AND PERMIT LIMIT: Tota 1 iron, 1.0 mg/l NONCOMPLIANCE, DATE, AND DURATION: 2.1 mg/1, 95EP82, 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> CAUSE.0JF, NONCOMPLIANCE:

The wastewater plant pH was upset during this period due to Unit 2 construction activities. An acidic floor cleaning solution was used to prepare the floors for painting. The upset pH degraded the efficiency of flocculation and filtration.

CORRECT M ACTIUn:

A' work request has been initiated to Install an inline pH monitor at the WTF.

Installation of the equip:aent, and logic to trip the equalization tank transfer pumps on conditions of high or low pH should prevent this from occurring in the future.

"P *

• DAIE RECOGNIIID g A VIOLATION:

• E*"

• DATE IN7EST'CATED:

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e-LASALLE COUNTY NUCLEAR GENERATING STATION N.P.D.E.S. PERMIT NO:

ILOO48151 NONCOMPLIANCE REPORT DISCHARGE NUMBER AND DESCRIPTION:

001c - Lo.v Volume Waste Radwaste Olscharge Tanks PARAMETER AND PERMIT LIMIT:

Total Suspended Solids - 15 ung/l

~

Total tron - 1.0 mg/l NONCOMPLIANCE, DATE, AND DURATION:

TSS, 22 mg/1, August 1,1982,13 ;iours Total tron, 6.0 mg/1, August 1, 1982, 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> CAUSE,OF, NONCOMPLIANCE:

Hechanical problems with the Radwaste evaporators resul1 bed poor quality water being processed to this out fall. This water was known to have been of poor quality prior to processing forward, but was not acted upon due to high water Inventories in Radwaste. Once the water was discharged to this out fall tank, It could not be reprocessed, and must be discharged to the cooling Pond Blowdown line.

l CORRECTIVE ACTION:

Operating personnel were notified of the need to reprocess poor quality water, instead of processing it forward.

Operating personnel agreed with this, and will reprocess poor quality water. They are also attempting to correct the problems with the evaporators, which will alleviate the need for reprocessing.

i August 3. 1982 DATE RECOGNIZED AS,31 VIOLATION:

Bust 3, 1982 DATE INVESTIGATED:

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