ML20059L146

NPDES Noncompliance Notification:During Records Review, Discovered That Method Used to Determine Total Residuial Chlorine for Month of Oct Dpd Colorimetric Method.Actions Taken to Ensure Amperometric Method Used in Future

ML20059L146
Person / Time
Site:	San Onofre
Issue date:	12/30/1993
From:	Newton H SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML20059L141	List: ML20059L140 ML20059L146 ML20059L150
References
NUDOCS 9402030212
Download: ML20059L146 (2)

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Southern California Edison Company P. O. BOX 12 8 SAN CLEMENTE, CALIFORNI A 92672 H.W. NEWTON T E LE PHON E MANAGER (71 al 368 9940

.nE verou scav cEs December 30, 1993 Arthur L. Coe California Regional Water Quality Control Board San Diesgo Region 9771 Clairemont Mesa Boulevard, Suite B San Diesgo, California 92124-1331

SUBJECT:

NPDES Discharge Monitoring Report San Onofre Nuclear Generating Station, Unit 3

Dear Mr. Coe:

The NPDES Discharge Monitoring Report (DMR) for San Onofre Unit 3 covering the month of November is submitted in accordance with the requirements of Order No. 85-13 (NPDES Permit No. CA0108181) .

A summary of the generating unit's status and significant analytical results is provided below.

The unit was shutdown all month for a scheduled refueling outage and all sampled water sources were found to be within permit limits.

During a records review, it was discovered that the method used to determine Total Residual Chlorine for the month of October was the DPD Colorimetric method. The Amperometric Titration method for Total Residual Chlorine was not performed during the month. ,

corrective actions have been taken to ensure that the l Amperometric method is used for all future NPDES Total Residual I Chlorine analysis.

Pursuant to Order No. 85-13, Reporting Requirement l' , the following representative has prepared and is authorized to sign the reports required by this order: Robert K. Heckler, l Environmental Engineer.

I certify under penalty of law that I have personally examined and am familiar with the information submitted in the attached document, and based on my inquiry of those individuals

, immediately responsible for obtaining the information, I believe 9402030212 940125 '

PDR ADDCK 05000361 /

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Mr.*Artlur L. Coe- - December 30, 1993'

.-i the-submitted information is true, accurate, and complete. LI am ,

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awaro that there are significant penalties for submitting false information, including the possibility of.fino and imprisonment. ,

Sincerely,

/

. W. JEWTON Manager, Site Support Services ->

i RKH93275.lsp Enclosure 3 cc: Environmental Protection Agency, Region IX i

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