ML17228B339

NPDES Noncompliance Notification:On 951016,effluent Ph of Unit 1 Sewage Treatment Plant Observed to Be 5.54 Std Units,Below 6.0 Std Units Required by Wastewater Permit. Increased Ph Monitoring of Aeration Tanks Undertaken

ML17228B339
Person / Time
Site:	Saint Lucie
Issue date:	11/24/1995
From:	Sager D FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17228B340	List: ML17228B339 ML17309A805
References
L-95-312, NUDOCS 9511300265
Download: ML17228B339 (3)

Text

. PRIORITY ACCELERATED RIDS PROCESSING)(

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9511300265 DOC.DATE: 95/11/24 NOTARIZED: NO DOCKET g FACIL:50-335 St. Lucie Plant, Unit 1, Florida Power & Light Co. 05000335 AUTH. NAME AUTHOR AFFILIATION SAGER,D.A. Florida Power & Light Co.

RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

NPDES noncompliance notification:on 951016,effluent pH of Unit 1 sewage treatment plant observed to be 5.54 std units, below 6.0 std units required by wastewater permit.

Increased pH monitoring of aeration tanks undertaken.

DISTRIBUTION CODE: C001D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: Licensing Submittal: Environmental Rept Amdt & Related Correspondence NOTES RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2-1 PD 1 1 NORRIS,J 1 1 INTERNAL: ACRS 6 6 FILE CENTER 1 1 OGC/HDS3 1 0 GN2 RS RPB 1 1 EXTERNAL: LITCO AKERS,D 1 1 NOAC 1 1 NRC PDR 1 1 NOTE TO ALL RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE iVASTE! CONTACI'TIIE DOCUWIENT CONTROL DESK, ROOM PI-37 (EXT. 504-2083 ) TO ELIXIINATEYOUR NAME FROil DISTRIBUTION LISTS I'OR DOCUMENTS YOU DON"I'LED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 14 ENCL 13

0 Florida Power 81 Light Company, P.O. Box 128, Fort Piorce, FL 34954-0128 NOV 2 4 t995 I,-95-312 10 CFR 50.36b 10 CFR 50.4 EPP 3.2.1 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Re: St. Lucie Unit 1 Docket No. 50-335 Deviation of the Florida Wastewater Permit FL0002208 On October 16, 1995, the effluent pH of the Unit 1 Sewage Treatment Plant was observed to be 5.45 standard units which is below the 6.0 standard units required by the'astewater Permit. This deviation is being reported to the Florida Department of Environmental Protection (FDEP) in the Monthly Discharge Monitoring Report. A copy of the event is attached and is being sent pursuant to Section 3.2.1 of the St. Lucie Unit 1 Environmental Protection Plan.

As discussed in our previous letters L-95-150 dated May 16, 1995, and L-95-180 dated June 17, 1995, the U.S. Environmental Protection Agency has transferred administrative authority for the National Pollutant Discharge Elimination System (NPDES) Permit to FDEP.

FDEP has combined the NPDES permit and the State Wastewater Permit into a single document, WASTEWATER PERMIT NO. FL0002208.

Should you have any questions on this information, please contact us.

Very truly yours, D. A. ager Vice P esident St. cie Plant DAStGRM cc: Stewart D. Ebneter, Regional Administrator, Region Senior Resident Inspector, USNRC, St. Lucie Plant II, USNRC Attachment Florida Power 6 Light Company St. Lucie Plant

'51

. S, 951 1500245 PDR an FPL Group company

,, 124 ADQCK405000335

~PDR.

Industrial Wastewater Permit No. FL0002208 Outfall Serial Number: 004-1 Domestic Wastewater Permit DO-56-194903 October 1995 On Monday, October 16, 1995, at 0802 AM, the St. Lucie Plant Unit 1 Sewage Treatment Plant (STP) effluent was tested and found to have a pH value of 5.45 Standard Units (S.U.).. FPL believes that increased numbers of personnel at the site during a refueling outage resulted in extra loading on the STP which, in turn, probably caused the upset. A sample, previously collected on Friday, October 13, at 1240 AM was within the specified limit for pH. Aeration tank pH samples for October 14, and 15, 1995 were 6.83 and 6.95, respectively. This indicates that the event was of a relatively short duration (probably less than a day).

Upon discovering the STP effluent situation, corrective action was initiated by adding sodium carbonate to the system. The effluent pH was immediately returned within limits of 6.0 to 9.0 S.U.

During the event, flow in the intake/discharge canal, which receives the Unit 1 STP effluent was approximately 500,000 gallons per minute. Flow from the STP is typically less than 10 gpm, therefore, no adverse effect on the environment was observed or expected.

Increased pH monitoring of the aeration tanks was undertaken following the event. This monitoring will be performed three times per day until the system has fully stabilized.