ML19332G120

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NPDES Noncompliance Notification:On 891020,effluent High on Settleable Solids & on 891026,effluent Low on Ph.Caused by Introduction of Unknown Substance Into Sewer on 891019 & 20. Foreign Substances Being Evaluated
ML19332G120
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 11/30/1989
From: Katz B
SOUTHERN CALIFORNIA EDISON CO.
To: Delaney L
CALIFORNIA, STATE OF
Shared Package
ML19332G079 List:
References
NUDOCS 8912200185
Download: ML19332G120 (2)


Text

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1 yl Southern California Eclison Company SCE i

SAN ONOFRE NUC LE AR GENERATING $T A TION u

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S AN C LEMENT E. C ALIFORNI A 97473 November 30, 1989 c

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. Mr. Ladin Delaney, Executive Officer i

California Regional: Water Quality Control Board l

_ San'Diego-Region:.

9771 Clairemont. Mesa Boulevard, Suite B' San' Diego, California 92124-1331 a

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Dear Mr. Delaney:

Subject:

NPDES Monitoring Report San Onofre Nuclear Generating Station, Unit 1 The S0'NGS monitoring report covering the month of October is submitted in accordance with~the requirements of CRUQCB Order 88 001 (NPDES Parmit No.

B "CA0001228). A summary of the generating unit's status and significant analytical results is provided below.

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LThe'unitLwasLoperational during October. All sampled water sources were found

to be within' permit-limits, except the Sewage Treatment Plant. The effluent L ' ".'
was high-on settleable solids October 20 and low on pH October 26. -It is believed lthat the'settleable solids increased due to the. introduction of an unknown substance into the sewer on October 19 and 20..The low pH occurred during the r covery phase from this upset on a day that, ittis believed, there' i was, another unknown substance in the influent. -In an effort to reduce these e

incidences, the EPA restrictions against introduction of foreign substances into the" sewer are being reemphasized to all site personnel.

Further, the.

, potential sources (a~nd flow paths) of foreign substances in the sewage h

treatment plant ~ are being evaluated.

Pursuant'to Order No.88-001, Reporting' Requirement 12, the following representative is authorized to sign and certify all reports required by this

> order: ~ Arthur Kneisel, Environmental Engineer.

_I certify under penalty of. law that I have personally examined and am familiar

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=with the information submitted in the attached document, and based on my inquiry of those individuals immediately responsible for obtaining the information, I believe the submitted information is true, accurate, and 8912200185 891211 ADOCK 0500 j6 gDR

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.- j Mr. Ladin Delaney 2-November 30,-1989 NPDES Monitoring Report Unit 1

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complete.. I am aware that there are significant penalties for submitting 4

false information. including the possibility of fine and imprisonment, Sincerely, btS B. Katz Manager, Site Support Services L

Enclosure cc:

Environmental Protection Agency, Region IX h

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