ML20083N564

Imforms That Since mid-March,continuous Flow Observed Coming from Stormwater Outfall 17/18.Util Concluded That Source of Effluent at Stormwater Outfall 17/18,leakage from Conventional Waste Treatment Basins

ML20083N564
Person / Time
Site:	Catawba
Issue date:	05/17/1995
From:	Cook T DUKE POWER CO.
To:	Robinson L SOUTH CAROLINA, STATE OF
References
NUDOCS 9505230156
Download: ML20083N564 (2)

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• l sist) Conford i0 nud n.ru scwn DUKEPOWER May,17,1995 Mr. Lanny Robinson South Carolina Dept. of Health and Environmental Control P.O. Box 100, Ft. Lawn, SC 29741

Subject:

Stormwater Outfalls #17/18 Continuous Flow File No.: CN-702.20-2

Dear Mr. Robinson:

The purpose of letter is to describe the observed conditions and corrective actions taken l at Stormwater Outfall #17/18. This outfall is located at the Southeast corner of the '

Conventional Waste Treatment Basin yard. Since Mid-March, a continuous flow has been observed coming from this outfall. Because the source was unknown, Catawba Site personnel began collecting and returning the emuent to the Conventional Waste Treatment System, and also sampled the emuent daily for pH, conductivity, and chlorine. ,

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Our investigation has led us to the conclusion that the source of the emuent at Stormwater )

Outfall #17/18 is leakage from the Conventional Waste Treatment Basins. The Catawba Site is in the process of evaluating the long-term solution to this situation. As we l l

discussed , the emuent is still being collected and returned, and will be sampled twice l weekly, on Tuesdays and Fridays. Catawba Site personnel will analyze for conductivity, pH and chlorine on Tuesdays, and for pH and conductivity on Fridays

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• We will continue to keep you informed as we move toward a long-term solution to this problem. If you have any additional questions or concerns, please contact me at (803) 831-3189 or Cheryl Peed at (803) 831-3361. j i

Sincerely, J rtal Thomas E. Cook, Engineer CNS Environmental Management cc: Al Williams, SCDHEC- Catawba District ,

NRC - Document Control Desk Docket No: 50-414 l NRC - S.D. Ebneter l NRC - R.E. Martin l B. J. Horsley - ECl2T  !

ELL - EC050 NCMPA-1 i SREC PMPA I NCEM l

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