RBG-30384, NPDES Noncompliance Notification:On 890316,sample Collected Exceeded Effluent Limitations for Total Residual Chlorine. Caused by Inability to Adjust Chlorine Dosage W/Effluent of Fluctuating flow.Long-term Solution in Progress

NPDES Noncompliance Notification:On 890316,sample Collected Exceeded Effluent Limitations for Total Residual Chlorine. Caused by Inability to Adjust Chlorine Dosage W/Effluent of Fluctuating flow.Long-term Solution in Progress

ML20246P210
Person / Time
Site:	River Bend
Issue date:	03/21/1989
From:	Deddens J GULF STATES UTILITIES CO.
To:	Oneill M LOUISIANA, STATE OF
References
RBG-30384, NUDOCS 8903280158
Download: ML20246P210 (2)

Text

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e GUZaF STATES UTILITIES COMPANY ,

R VER %END STABON  ; CST 08FICE ilox 220 57 FRANCISVILLE. lou $iANA 70775 1 AE A C30E 504 635-6 % 4 ?46-0651 i

March 21, 1989 RBG- 30384 '

File No. G1.11.2 Ms. Maureen O'Neill, Assistant Secretary Office of Water Resources Department of Environmental Quality P. O. Box 44091, Capitol Station Baton Rouge, LA 70804-4091

Dear Ms. O'Neill:

i Water Discharge-Permit No. WP0409 Rj_ver Bend Station - Unit 1 i i

l This is to inform Permit No. WPO409 for Outfall 004,y6u of a noncompliance with Water Disch from power sta tion to Grants Bayou. treated sanitary wastewater Whereas the effluent limitations for total residual chlorine (TRC) in the outfall are a minimum collected of 0.8 at 1000 mg/l hours on'andMarch a maximum 16, of 2.0 mg/1, a sample TRC. 1989, contained 3.5 mg/l the calcium hypochloriteWhen the high TRC level was noted, immediate a  ;

l effluent within the allowable dose rates range.wereSamples made to obtain an taken later on March 0.8 - 1.516mg/1.and again the next day, indicated TRC concentrations of s

The cause of this excur: ion was an inability to adjust the demand,dosage chlorine as well as with effluent of fluctuating flow and oxidant tablets. variability in the quality of hypochlorite on two Similar problems were encountered the previous week and 15, 1988; occasions last autumn, reported in letters dated October l November 17, 1988; and March 14, 1989.

As noted in las't week's letter, we continue to pursue a long-term solution Pleast refer to that document for details,to the problem of reliable d d

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I certify under penalty of law that this document were prepared under my direction or supervision and all attachments in accordance with a i I

system designed to assure that qualified personnel properly evaluate the information submitted. Based on my inquiry of gather and the person or forpersons who manage the system, or those persons directly responsible gathering to the best of my knowledge and belief, true, accurate, I and co am aware that information, there are including significant penalties for submitting false the possibility knowing violations. of fine and imprisonment for  ;

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Sincerely,

/ hm J. C. Deddens Senior Vice President River Bend Nuclear Group JCD/JEB/LAE/qwedWC/JVC/ns cc: Capitol Regional Office Water Pollution Control Division 11720 Airline Highway Baton Rouge, LA 70817-1720

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U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 NRC Resident Inspector P. O. Box 1051 St. Francisville, LA 70775 j

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