ML20057D634

Requests Reduction in Toxicity Monitoring Requirements for Outfalls 001 & 002.Summary of Toxicity Monitoring History for Outfalls Listed

ML20057D634
Person / Time
Site:	Catawba
Issue date:	09/30/1993
From:	Carter J DUKE POWER CO.
To:	Eleazer T SOUTH CAROLINA, STATE OF
References
NUDOCS 9310050096
Download: ML20057D634 (3)

Text

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il I Duke nunt Company Generation Services Department 13339 Hagers Ferry Road H.ntersvitie, NC28078 7929

[  ; DUKEPOWER September 30, 1993 Mr. Timothy M. Eleazer Industrial and Agricultural Wastewater Division South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201

Subject:

Catawba Nuclear Station -NPDES Permit No. SC0004278 Request to Reduce Toxicity Monitoring-Outfalls 001, 002 File: CN-254.00

Dear Mr. Eleazer:

The purpose of this memo is to request a reduction in the toxicity monitoring requirements for Catawba Nuclear Station's outfalls 001 and 002. Please find a summary of the toxicity monitoring history for these two outfalls listed below:

Date Outfall 001 Outfall 002 October 1992 Pass Pass November 1992 Pass Pass December 1992 Pass Pass January 1993 Pass Pass February 1993 Pass Pass March 1993 Pass Passl i April 1993 Pass Fail April 1993 Retest N/A Pass May 1993 Pass Pass June 1993 Pass Pass s

July 1993 Pass Pass August 1993 Pass Pass i

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Please note that in Part III, special condition #13 (e) allows for a reduction in the monitoring from monthly to quarterly after twelve consecutive months of toxicity testing has been_ completed.

Additionally, it is requested that Part III, special condition #14 be put into effect. This will allow pages 5 & 9 of the permit to become effective and for pages 4 & 8 to expire.

Pages 5 & 9 require that 1 sample per month be collected.

Therefore, if the request to drop the frequency to quarterly is granted, these sheets will need to be revised by the State to show the new frequency of quarterly sampling. Additionally, pages 5 & 9 differ from pages 4 & 8 in that Part III, Special Condition #13 e is omitted from the requirements. This is the condition which requires that a toxicity evaluation plan be submitted following a failed toxicity test. We would like for the State to verify that this is correct.

If possible we would like a response to this request prior to the November, 1993 sampling. If you need additional information or have any questions please call John Estridge at (704) 875-5965 or Robert Wylie at (704)875-5970.

Sincerely, John Carter, Technical System Manager Environmental Division, Water Protection Jte/240 cc: NRC Document Distribution I

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