ML20154K027

Requests Mod of Permit Requirements for Outfall 002 of Water Discharge Permit WPO409 to Add New Outfall 02A to Be Comprised of Treated Chemical Metal Cleaning Wastewater

ML20154K027
Person / Time
Site:	River Bend
Issue date:	05/25/1988
From:	Deddens J GULF STATES UTILITIES CO.
To:	Oneill M ENVIRONMENTAL PROTECTION AGENCY
References
RGB-27970, NUDOCS 8805270228
Download: ML20154K027 (5)

Text

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AFE 4 CODE SM 9M 6 M 344 M51 May 25, 1988 RBG-27970 File No. G1.ll.2 Ms. Maureen O'Neill, Assistant Secretary Office of Water Resources Department of Environmental Quality Post Office Box 44091, Capitol Station Baton Rouge, LA 70804-4091

Dear Ms. O'Neill:

Water Discharge Permit No. WPO409 River Bend Station - Unit 1 Gulf States Utilities (GSU) hereby requests modification of permit requirements for Outfall 002 of Water Discharge Permit No.

WP0409.

Revision of Outfall 002 is requested to add a new Outfall 02A to be comprised of treated chemical metal cleaning wastewater.

River Bend Station is a nuclear-fueled steam electric generating station located on the east bank of the Mississippi River south of St. Francisville in West Feliciana Parish, Louisiana.

Station cooling is provided by forced draft cooling towers and noncontact cooling water. Makeup to the cooling systems is drawn from and blowdown is discharged to the Missinippi River.

The proposed outfall would consist of treated chemical metal cleaning wastewaters which would be discharged to Outfall 002 (low-volume waste) neutralization tanks for inclusion with demineralization regeneration and rinse water, auxiliary boiler blowdown, and demineralizer and auxiliary boiler room floor drainage.

The wastewater will be generated from chemical metal cleaning of plant cooling system components and piping.

The water will be treated by the contractor to achieve performing the cleaning operations for removal of iron and copper discharge concentrations of 1.0 mg/l or less of each.

Chemical metal cleaning would be performed on an as-needed basis. Waste sludges from the treatment of the wastewater would be disposed of off-site in accordance with applicable solid / hazardous waste regulations. Discharges of the treated water would be periodic and would be monitored for flow once per day when chemical metal cleaning wastewaters were being generated, at the point (s) of release from the contractor's treatment equipment to Outfall 002.

Inasmuch as Outfall 02A would consist of a new wastewater type, no characterization representative of River Bend Station is available.

It is expected that the treated chemical metal cleaning wastewaters would be similar to those produced by such processes at other steam electric generating facilities in the region. The main constituents of the surfaces to be cleaned 8805270228 880525 (00 '

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2 Ms. O'Neill Page 2 May 25, 1988 copper, iron, and zine (attached Table), while the deposits to be removed are are expected to consist of these metals, as well as silica and calcium.

Concentrations of these materials can be reduced by means of available technology to levels acceptable under the standards provided in 40CFR423.

The effluent of proposed Outfall 02A would be discharged to one of two 30,000-gallon tanks and neutralized prior to discharge as part of Outfall 002.

and grease Outfall 002 is monitored for total suspended solids (TSS) and oil (0&G).

Outfall 002 limits for TSS are a maximum of 100 mg/l and a daily average of 30 mg/1, while its limits for O&G are a maximum of 20 mg/l and a daily average of 15 mg/1. Outfall 002 discharges as a previously monitored effluent to Outfall 001 where pH is monitored with limits of 6.0 SU minimum and 9.0 maximum. Thus, ultimate discharge of proposed Outfall 02A would be to the Mississippi River via Outfall 001. A revised station water flow diagram incorporating the proposed Outfall 02A is attached.

Addition of new Outfall 02A to Water Discharge Permit No. WP0409 is requested with monitoring of iron and copper once per week, when discharging, with limits of 1.0 mg/l SU maximum and average for each parameter, in accordance with the provisions of 40CFR423.

Monitoring of pH,

TSS, and O&G, also required for chemical metal cleaning wastewaters, will be accomplished at l

Outfalls 001 and 002. No adjustment in the currently permitted. volumes at Outfalls 001 and 002 will be required.

Should you require further information, please contact Mr. James W. Cook at the above address or at (504) 381-4151.

CERTIFICATION I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted.

Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information submitted, the information submitted is, to the best of my 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,

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James C. Deddens Senior Vice President River Bend Nuclear Group 4tLL JCD/ EB/L /JVC/JWC/ch

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Ms. O'Neill Page-3 May 25,1988 Attachments:

. Table - Metallurgical Composition of Portions of Cooling Systems Subject to Possible Chemical Cleaning

' Figure - Station Water Flow cc:

Mr. Myron Knudson, 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 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 lU.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 NRC Resident Inspector Post Office Box 1051-St. Francisville, LA 70775

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