ML20059L150

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

ML20059L150
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 9402030215
Download: ML20059L150 (2)

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Southem Califomia E'dison Company P. O. BOX l 28 SAN CLEMENTE. CALIFORNIA 92672 pa,w, NEWTON TELEPHONE MANAGER E71dl 368 994'.)

SITE SUPPORT SERViCl%

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

SUBJECT:

NPDES Discharge Monitoring Report San Onofre Nuclear Generating Station, Unit 2

Dear Mr. Coe:

The NPDES Discharge Monitoring Report (DMR) for San Onofre Unit 2 '

covering the month of November is submitted in accordance with the requirements of Order No. 85-11 (NPDES Permit No. .CA0108073).

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

The unit was in operation all month 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 November 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' Amperometric method is used for all future NPDES Total Residual Chlorine analysis.

Pursuant to Order No. 85-11, Reporting Requirement 12, the following representative has prepared and is authorized to sign the reports required by this order: Robert K. Heckler, 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 B

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,Mr.. Arthur:L. .Coe December'30, 1993 the submitted information is true, accurate, and complete. 'I am aware that there are significant penalties for submitting: false-information, including the possibility of fine and imprisonment.

Sincerely, b

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f. W. if'WTON Manager, Site Support Services Enclosure cc: Environmental Protection Agency, Region IX RKH93274.lsp 4

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