ML20081J788

Forwards Sc Dept of Health & Environ Control Approving Continued Use of Sodium Bromide in Cooling Towers Until 950901.Approval Will Become Permanent When State Updates NPDES Permit Later This Year

ML20081J788
Person / Time
Site:	Catawba
Issue date:	03/17/1995
From:	Estridge J DUKE POWER CO.
To:	Davis W, Harris J, Jackson A DUKE POWER CO.
References
NUDOCS 9503280181
Download: ML20081J788 (3)

Text

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March 17,1995 l A.P. Jackson - CNO3CH ,

J.T. Harris - CN01EM W.J. Davis - CN01CH {

S.D. Davenport - EC07D 3 G.W.Sain EC07D  !

Subject:

Catawba Nuclear Station -NPDES Permit No. SC0004278 .

SCDHEC Sodium Bromide Approval Until Sept.1,1995 'i' File: CN-702.13 ,

Attached please find a letter from SCDHEC in response to our January 4,1995 request to continue the use of sodium bromide in the cooling towers. This approval is only until September 1,1995. The approval will become permanent when the State updates the NPDES i permit later this year due to their basin permitting strategy.

i Should you have any questions concerning this letter please give me a call at (704) 875-5965.

Sincerely, l f'

1ho  !

John Estridge, Engineer Environmental Division, Water Protection  !

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• March 16,1995 '

Mr. John Estridge, P.E.

Duke Power Company l

Environmental Division, Water Protection  ;

13339 Hagers Ferry Road .

Huntersville, N.C. 28078-7929 .

Re: Sodium Bromide Trial Extension Catawba Nuclear Station / Duke Power Co.

York County

Dear Mr. Estridge:

Our Omco has received your January 4,1995 letter requesting approval to extend the <

maintenance chemical trial using sodium bromide for control of biological growth in the two (2) recirculating cooling towers systems at the Catawba Nuclear Station in York County. As we discussed by telephone, this extension is needed in order to evaluate the effectiveness of the sodium bromide during the summer months in coriunction with sodium hypochlorite which is presently used in the cooling towers. Based on a review of the information provided, our Omce approves your request with the following conditions: '

1) This trial extension is approved until September 1,1995.

2) A minimum dilution of one (1) patt RC cooling tower blowdown water to two (2) parts once through RL cooling water (1:2) must be maintained.

3) During the trial, internal Outfal1005 shall be limited to a monthly average of 0.2 mg/l and a instantaneous maximum of 0.5 mg/l for Free Available Oxidants.

L in accordance with the Basin Permitting Strategy, we are currently working on revisions to the Duke Power Company Catawba Nuclear Steam Station NPDES permit No. SC0004278.

In updating this permit, we are planning to incorporate the permanent use of sodium bromide as a maintenance chemical to the cooling towers.

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{ MOM..sWATER POLLUTION To e 794 875 C974 1996.C3-13 04sB7PM #153 P.C3/03 Duke Power Co./ January 4.1995 Ictter  :

Page 2 )

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If you should have any questions, please call me at (803)734-5247.

Sincerely, w

s/d=;Wy N. &

Timothy M. Elcazer Environmental Engineer Associate Industrial and Agricultural Wastewater Division TME/dukebc2 cc: Al Williams, Catawba EQC l

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