ML20210A281

Forwards Annual Environ Operating Rept for 861017-1231, Consisting of Vols 1 & 2 to R-209, Seabrook Environ Studies,1984:Characterization of Baseline Conditions... & R-210, Seabrook Environ Studies 1985 Data Rept..

ML20210A281
Person / Time
Site:	Seabrook
Issue date:	04/30/1987
From:	George Thomas PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20210A285	List: ML20210A281 ML20210A332 ML20210A351
References
NYN-87060, NUDOCS 8705050054
Download: ML20210A281 (4)

Text

George S. Thomas we.PresserW Nuclear Produchon

_ _ . _ _ NYN-87060 New Hampshire Yankee Division April 30, 1987 United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Document Control Desk

References:

(a) Facility Operating License No. NPF-56, Docket No. 50-443 (b) National Pollutant Discharge Elimination System (NPDES)

Permit No. NH0020338 Subj ect: Annual Environmental Operating Report Gentlemen:

Enclosed please find the Annual Environmental Operating Report for Seabrook Station. The enclosed report is a summary of the implementation of the Environmental Protection Plan (EPP) for the period of October 17, 1986, to December 31, 1986, and is being submitted pursuant to the requirements of Section 5.4 of the Seabrook Station Technical Specifications, Appendix B.

Should you require further information regarding this matter, please contact Mr. Jerry M. Kwasnik at (603) 474-9574, extension 4053.

Very truly yours, 7'

George S. Thomas Enclosures cc: Regional Administrator USNRC Region I 631 Park Avenue King of Prussia, PA 19406 Mr. A. C. Cerne NRC Senior Resident Inspector Seabrook Station Seabrook, N.H. 03874 (Etrtironmental Studies Report not enclosed) vr f f I

n705050054 870430 I j

PDR ADOCK 05000443 l R PDR P.O. Box 300 . Seabrook, NH 03874 . Telephone (603) 474-9574

ENCLOSURE TO NYN-87060 SEABROOK STATION ANNUAL ENVIRONMENTAL OPERATING REPORT October 17, 1986 to December 31, 1986

1. Preoperational Program The Preoperational Environmental Studies Program at Seabrook Station spans the period from 1975 to date. Enclosed is Technical Report (XVI-II) which summarizes the results, through 1984, of the preoperational baseline monitoring program and provides a characterization of the sources and magnitudes of naturally occurring variability against which operational conditions can be compared. A data summary (Technical Report XVII-I) for 1985 has also been included. Preoperational data for 1986 is not available but will be forwarded as part of the 1987 submittal.

2. Environmental Protection Plan Activities for Reporting Period Aquatic Monitoring I

Two investigations were in progress during the reporting period. The first study is investigating the formation of halogenated hydrocarbon 4

compounds and the potential for biological accumulation of these compounds within the tissue of marine organisms. The study involves a combination of laboratory and field work with background support from the available literature. This effort is being conducted as part of the Chlorine Minimization Program (CMP) outlined in the National Pollutant Discharge Elimination System (NPDES) Permit for Seabrook Station and will be completed in 1987.

The second study will document the incidence of neoplasia, a source of natural mortality within sof t-shell clams Mya arenaria near and around the plant site (Hampton Harbor). Tne results of this study should be completed in the fourth quarter of 1987.

Terrestrial Monitoring Not Applicable Noise Monitoring Not Applicable

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3. EPP Non-compliances and Corrective Actions There were 40 exceptions noted and reported in Seabrook Station's Discharge Monitoring Reports (DMRs) for the period (Oct. - Dec. 1986). A categorization of those exceedences follows:

EXCEEDENCE COMMENTS October Coliform (2) Upset condition generated by lagoon pump-down as part of aerator tube replacement; two exceedences occurring by average Iron (6) Descaling of chlorination cells November Turbidity (11) Snow melt and storm water runoff following heavy precipitation Suspended Solids (2) Snow melt and storm water runoff following heavy precipitation Oil & Grease (1) Fouling of coalescing filter with solids.

Filter has been changed Iron (4) Descaling of chlorination cells December Turbidity (6) Snow melt and storm water runoff following heavy precipitation Suspended solids (1) Snow melt and storm water runof f following heavy precipitation Flow Exceedence (1) Snow melt and storm water runof f following heavy precipitation Coliform (4) Chlorine levels were raised to compensate; two exceedences occurring by average Chlorine (1) Loss of buffer to chlorine analyzer; buffer metering pump inspected and adjusted Iron (1) Descaling of chlorination cells

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' 4. Changes to Plant Design or Operation No changes to plant design or operation that involved an unreviewed environmental question occurred during this reporting period.

5. Nonroutine Reports i

There were no non-routine reports generated during this reporting period.

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