ML20045D914
| ML20045D914 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 06/23/1993 |
| From: | Rehn D DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9306300216 | |
| Download: ML20045D914 (3) | |
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a DukeibwerConipany.
D L Run Catauha Nuclear Generaticm Department Vice President ~
' 4W)C<mcord Road
'(803)8313205 00tce.
. York, SC29145 (803)8313426 Fax DUKEPOWER
- June 23,1993 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk i
Washington, DC 20555
Subject:
Catawba Nuclear Station Docket Nos. 50-413 and 50-414 Environmental Protection Plan Reporting.
The Environmental Protection Plan (Appendix B to the Catawba Facility Operating.
License). requires _ that changes to the NPDES Permit or State Certification' be reported to the NRC within thirty (30) days following the date the change is.
approved.
Attached please find approval for the discharge of Betz Clam-Trol 1-issued by the South Carolina' Department of Health and Environmental Control June 8,1993.
Very truly yours
. D. L. Rehn Attachments JTil/EPP 1993 l
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S. D. Ebneter Regional Administrator, Region II.
R. J.' Freudenberger Senior Resident Inspector Catawba Nuclear Station 1
R. E. Martin, ONRR -
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' June 8, 1993 Hr. Robert R. Wylie Engineer Environmental Division Duke Power Company 1333g Hagers lerry Road Huntersville, N.C. 28078-7929 Re: Biocide: Betz Clam-Trol CT-1 Approval Duke Power Co./ Catawba Nuclear-Station York County
Dear Mr. Wylie:
Our Office has received your March 4,1993 letter concerning the use of the Betz
- biocide Clam 1rol Cl-1 at the Duke Power Company Catawba Nuclear Station in York County. lhe data supplied by Detz Laboratories on the toxicity of Clam-Trol CT-1 to Ceriodaphnia dubia indicates that a 12-hour exposure to 0.40 mg/l is not toxic. Based on a review of the information provide ~d, our Office approves your request to use the biocide Clam 1rol at the Catawba Nuclear Station for Outfalls 001 and 002 with the following conditions:
- 1) 1hi: Clam Trol CT-1 shall be limited to a daily maximum of 0.40 mg/1, at least three (3) samples shall be taken during a 24-hour period when the Clam Trol CT 1 is expected to be present (detectable) in the outfalls.
- 2) lo ensure that the CT-1 has been detoxified from the discharge, Duke Power Company shall perform a 100% effluent three-brood pass / fail Ceriodaphnia dubia -
chronic toxicity test. Toxicity shall be limited to no statistically significant evidence at the 0.05 a level that the' percentage of tests failed is greater than 5%.. As has been discussed with Mr. Vernon Beaty, Water
~
Quality Monitoring Section, the toxicity test. solutions will be allowed to be renewed daily with a new sample taken daily during the early part of the test.
Renewing daily samples will make 'the test a better approximation to Cl 1 that organisms in Lake Wylie will receive. The samples collected shall be 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> composite samples.. Also, a minimum of three (3) samples must be used, and all other USEPA and SCDHEC test protocols must be followed.
If you should have any questions, please call me at (803)734-5247.
Sincerely,
&v 4' 1H. Z&y l
Timothy'H. Eleazer Environmental Engineer Associate l
THE/ebs Industrial and Agricultural
. Wastewater Division cc: Al Williams, Catawba EQC Vernon Beaty, Water Quality Monitoring L
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