ML20214H189

Npdes/Spdes Noncompliance Notification:During 860218-27, Water from Continuously Running Toilets Discharged to Sewage Treatment Plant,Resulting in Above Average Flows.Toilet Facilities Will Be Inspected If Event Recurs

ML20214H189
Person / Time
Site:	Nine Mile Point
Issue date:	08/01/1986
From:	Lempges T NIAGARA MOHAWK POWER CORP.
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NMP-19661, NUDOCS 8608130028
Download: ML20214H189 (2)

Text

~ .

. 6' Nh!P-19661 NIAG ARA MOH AWK POWER CORPORATION NIAGARA MOHAWK 300 ERIE BOULEVARD WEST SYRACUSE,N Y 13202 u

m d"mjsgg;ugs,,c,,

August 1, 1986 Dr. Thomas E. h!urley Regional Administrator United States Nucicar Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406

Dear Dr. h!urley:

Correspondence dated blaich 11, 1983 frota the Nuclear Regulatory Commission (NRC) transmitted Amendment 51 to Facility Operating License No. DPR-63 (Docket No. 50-220) for the Nine blile Point Nuclear Station Unit I. Contained therein was a request that the NRC staff be kept informed of any changes in the station's NPDES /SPDES Discharge Permit (No. NY-000-1015) and any permit viola-tions.

During the period of January-June 1986 there was one exceedance of the station's SPDES Permit. The exceedance occurred during the month of February 1986 and concerned the monthly average flow for the station's sewage treat-ment facilities. Attached is a copy of the descriptive report sent to the New York State Department of Enviromtental Conservation and the Environmental Protection Agency.

There were no changes to the station's SPDES Discharge Permit during the period of January - June 1986.

Niagara blohawk will fulfill the requirement to keep the NRC staff informed of any changes in the NPDES /SPDES Discharge Permit or of any permit violations.

Such information will be supplied on a semi-annual basis.

In tne event there are any questions concerning permit violations and revisions, or the reporting schedule, please contact hir. Ilugh Flanagan at (315) 349-2428.

Sincerely, 860e130028Bh$$O220 PDR ADOCK O PDR Thomas E. Lempges Vice President

[ ,

s Nuclear Generatfon TEL/IIJF/tb /* s cc: Director, Office of Nuclear Reactor Regulation TJ Perkins i g j TW Roman EN Leach IIJ Flanagan

h = t* SPDES MONTHLY REPORT Summary of Excursions Station Nine Mile Point Nuclear Station Month February , Year 1986 Type of Discharge Sewage Treatment Plant Effluent Discharge Serial Number 030 Pa ram ete r Flow Permit Limit 120,000 gpd (avg.) - Reported Value 124,525 gpd (avg.)

A. Cause of non-compliance: New toilet facility completed at Unit II. Toilets were unintentionally in c Ntinuous flow mode when plumbing was connected and pressurized. Water from continuously running toilets discharged to sewage I treatment plant resulting in above average flow.

B. A description of the non-complying discharge including its impact upon the receiving water: Above averace flows on 2/18-27/86 from toilet facility resulted in a monthly averace flow of- 124.525 gpd. This value exceeded the permit limit of 120,000 gpd (monthly averaste). No significant impact on 1.ake Ontario because other permit effluent parameters were not exceeded.

C. Anticipated time the condition of non-compliance is expected to continue, or if such condition has been corrected, the duration of the period of non-compliance:

Cause of non-compliance (flowrate above permit limit monthly average for February 1986) occurred as a result of above average flows on 2/18-27/86.

D. Steps taken by the permittee to reduce and elimin' ate the non-complying discharge: The permittee inspected practically all underground manhole casings, and other permanent and temporary toilet facilities before finding the problem. Ground water leakage was originally thought to be the cause.

E. Steps taken by the permittee to prevent recurrence of the condition of non-com pliance: The non-compliance resulted from above average flows over a nine day neriod.

In the event above averace flows are noted acain. then all toilet facilities will be inspected as soon as possible. Flow is normally checked daily on weekdays.

{ J)VOOOloti )