View source for RBG-31172, Requests Mod to NPDES Permit LA0042731 Requirements to Establish Effluent Limitations for Zinc in Outfall 001 of 1.0 mg/1 Daily Average & 1.0 mg/1 Daily Max

{{Adams
| number = ML20246A194
| issue date = 06/28/1989
| title = Requests Mod to NPDES Permit LA0042731 Requirements to Establish Effluent Limitations for Zinc in Outfall 001 of 1.0 mg/1 Daily Average & 1.0 mg/1 Daily Max
| author name = Deddens J
| author affiliation = GULF STATES UTILITIES CO.
| addressee name = Knudson M
| addressee affiliation = ENVIRONMENTAL PROTECTION AGENCY
| docket = 05000458
| license number = 
| contact person = 
| document report number = RBG-31172, NUDOCS 8907060186
| document type = CORRESPONDENCE-LETTERS, EXTERNAL CORRESPONDENCE, EXTERNAL LETTERS ROUTED TO NRC
| page count = 2
}}

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                                                                                                                                           >   l GULF STATR'S                        UTELITIES COMPANY fg                                   ?
RNER BEND STATION    POST OmCE 80x 220      ST FRANCISvuE300tsaNA 70U5 AREA CODE 504   635 6')94     346 8651 June 28, 1989 RBG- 31172 File Nos. G1.11.7 Mr. Myron Knudson, P.E.
Director, Water Management Division (6W)
U. S. Environmental Protection Agency, Region VI Allied Bank Tower at Fountain Place 1445 Ross Avenue Dallas, TX 75202-2733

==Dear Mr. Knudson:==

NPDES Permit No. LA0042731 River Bend Station - Unit 1 Gulf States Utilities Company (GSU) hereby requests modification of permit requirements for Outfall 001 of NPDES Permit No. LA0042731.                              Revision of Outfall 001    -   cooling tower blowdown and previously monitored low volume water - is needed to continue use of zinc in a water treatment program.
In response to GSU's May 25, 1988 request, Administrative Order Docket No.
VI-88-238 was issued by you to allow the evaluation of zine salts as a cooling water treatment chemical. Under the terms of the Administrative Order, GSU has been testing zinc in various combinations with other additives for mild steel corrosion inhibition since October, 1988. Results from nine months of testing indicate that zinc contributes to reducing mild steel corrosion rates in our service and circulating water systems. During the same period we have complied with effluent limitations established for Outfall 001 in the Administrative Order.
GSU, therefore, asks that a revision of NPDES Permit No. LA0042731 be issued establishing effluent limitations for zinc in Outfall 001 of 1.0 mg/l daily average and 1.0 mg/l daily maximum, with a monitoring l
l requirement of once per week by grab sample. These conditions are consistent with the provisions of 40CFR423.
If you require further information, please contact Mr. James W. Cook at the above address or at (504) 381-4151.
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NPDES Permit LA0042731                                                  Page 2 1
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i I certify under penalty of law that this document and all attachments were         )
prepared under my direction or supervision in accordance with a system            i designed to assure that qualified personnel properly gather and evaluate           l the information submitted. Based on my inquiry of the person or persons          j who manage the system, or those persons directly responsible for gathering         l the information submitted, the information submitted is, to the best of my       l knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
Sincerely,
                                                                      /
J. C. Deddens Senior Vice President             !
River Bend Nuclear Group          I JCD/JEB/L            JK/   /JVC/ch 1
cc:         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 Post Office Box 1051 St. Francisville, LA 70775 Ms. Maureen O'Neill, Assistant Secretary Office of Water Resources Louisiana Department of Environmental Quality Post Office Box 44091, Capitol Stai f on
* Baton Rouge, LA 70804-4091 l
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