ML20217J231

County Station Environ Protection Plan 1997 Annual Operating Rept

ML20217J231
Person / Time
Site:	LaSalle
Issue date:	12/31/1997
From:	Dacimo F COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9804300195
Download: ML20217J231 (3)

Text

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. 1.as.ille Generaung Station

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April 27,1998 l

United States Nuclear Regulatory Commission Attention: Document Control Desk Washingtort D.C. 20555

Subject:

Environmental Protection Plan Operating Report Appendix B to Facility License No. NPF-11 and NPF-18 Attached is the Annual Environmental Operating Report for 1997 for the Environmental Protection Plan as required by Section 5.4 of Appendix B to the Facility License No. NPF-11 and NPF-18.

This report includes information required by the following subsections of Appendix B:

3.1 Plant Design and Operation 4.2.1 Vegetative Integrity on Cooling Pond Dike 5.4.1 EPP Noncompliances and the Corrective Actions to Remedy Them 5.4.2 Non-routine Reports Eighteen copies of this report are being submitted in accordance with Regulatory Guide 10.1.

If there are any questions or comments concerning this letter, please refer them to Harry Pontious, Regulatory Assurance Manager, at (815) 357-6761, extension 2383.

Res otfu ,

/ '

Fred Dacimo Site Vice President

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LaSalle County Station v Enclosure cc: A. B. Beach, NRC Region lll Administrator

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M. P. Huber, NRC Senior Resident inspector - LaSalle D. M. Skay, Project Manager - NRR - LaSalle F. Niziolek, Office of Nuclear Facility Safety - lDNS 00\

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. LaSalle County Station Environmental Protection Plan 1997 Annual Operating Report Plant Desian and Operation No changes in station design or operation, tests, or experiments which can be classified as a potentially significant unreviewed environmental issue (per Subsection 3.1) were made.

Veaetative Intearity on Coolina Pond Dike 1 The vegetative integrity on the cooling pond dike was inspected in accordance with LaSalle County Surveillances LTS-1000-5, ' Minor Dike inspection' and LTS-1000-32, ' Major Dike Inspections'. Inspections during 1997 were completed on April 4, May 15, June 18, July 16, August 18, September 11, and October 20.

The results of the inspections determined that the vegetative growth on the LaSalle Cooling Pond Dike was in good condition. There were no areas that required reseeding.

There were no other vegetative concerns noted during the 1997 cooling pond dike inspections.

EPP Noncompliances and Corrective Actions Taken to Remedy Them During 1997, LaSalle County Station experienced two noncompliance conditions.

The events were submitted to the lilinois Environmental Protection Agency (IEPA) in accordance with Standard Condition 12 of the station's NPDES Permit No. IL0048151. The following contains a description of the noncompliances and corrective actions taken:

1. EPP Noncomoliance On April 29,1997, the station Sewage Treatment Plant (STP) effluent Total Suspended Solids (TSS) analysis results were 91 mg/L TSS. The NPDES permit monthly maximum limit is 60 mg/L TSS.

The high TSS levels were due to an algae bloom in the sewage treatment polishing ponds.

, Corrective Actions Taken To Remedy:

a) - Controls over sludge wasting were implemented to ensure that the proper sludge age is established and maintained.

b) The aerobic digester is routinely emptied to minimize the potential of backwash into the aeration zone.

c) The polishing ponds are routinely cleaned on an annual basis.

This has been established as an annual predefine.

2. EPP Noncompliance During the month of July 1997, the monthly average sewage treatment effluent BOD was 47.5 mg/L. The NPDES permit monthly average limit is 30 mg/L.

Corrective Actions Taken To Remedy:

a) The unhealthy sludge was removed from the sewage plant and replaced with seed sludge from the City of Marseilles Wastewater Treatment Plant.

b) The sewage collection lines were video inspected, sources of inflow leakage (e.g. line breaks) were identified, and the appropriate collection line repairs were implemented.

c) A daily trending report has been established which monitors domestic water usage vs. sewage treatment flows. Large  !

disparities will indicate an influx of ground water into the system. !

This trending also monitors various lift station pump run times.

Large differences in run times will locate the area of ground water .

in leakage. When detected, high priority work requests will be initiated to cause timely repairs to the system.

N_,o n Routine ReDorts No non-routine reports were submitted.