ML20101A624

Forwards Seabrook Environ Studies,1990 Characterization of Environ Conditions in Hampton-Seabrook Area During Operation of Seabrook Station & Seabrook Environ Studies 1990 Data Rept

ML20101A624
Person / Time
Site:	Seabrook
Issue date:	04/19/1992
From:	Feigenbaum T PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20101A628	List: ML20101A624 ML20101A629
References
NYN-92051, NUDOCS 9204290269
Download: ML20101A624 (7)

Text

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s April 19,1902  ;

{gbQ Vf t tjnited States Nuclear' Regulatory Commissior .

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Q Attention:

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y ja lReMr6nces: ta)' Facility Operating License No, NPF-86, Docket No. 50-443 h '

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l(b). National Pollutant: Discharge Elimination System (NPDES) Permit No.

~ NH0020338 y; 1 i

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l SEABROOK STATION i'

ANNUAL ENVIRONMENTAL OPERATING REPORT 4

JANUARY 1, 1991 TO DECEMBER 31, 1991 ,

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SEABROOK STATION -l 7 ANNUAL ENVIRONMENTAL 0PERATING REPORT

. JANUARY 1, 1991 TO-DECEMBER 31, 1991

1. Environmental-Studies Procram -

Attachment 1 la Technical Report XXII-II, which summarizes environmental data results from.1975 through 1990. Attachment 2. Techr.ical Report u . XXII-1, is the data report for 1990. The data report for 1991 is still

under development and will be forwarded as part of the 1992 submittal.

• New Hampshire Yankee submitted an amended application (Attachment 3) for a National' Pollutant Discharge Elimination System (NPDES) Permit renewal to-the USEPA on April 11, 1991 with a copy sent to the NRC via NHY

_ letter NYE-91009.

2. Environmental Protection P1 tq_Act_i,vities for Recortine Period Aouatic-Monitorine

' New Hampshire Yankee (NHY) submitted a report 'Cteparative Evaluations of Hydraulic Model.and Field Thermai Plume Data, Seabrook Nuclear Power *

- Station." This report . measures the thermal plumes from the cooling

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water discharge, from plant operations. and cor. pares them to predicted plumes. Overall, a satisfactory agreement between the models and field data was observed. _This report was subaitted to the USEPA on June 18, 1991 (Attachment 4).

Few Hampshire Yankee on April 26, 1991 submitted a report. *1990 Ocean Temperature Compliance Report". This report summarizes ocean

- temperature data acquired in 1990 during the first 6 months of Seabrook Station operation - as required by NPDES Permit No..NH0020338. As a followup, on January 21, 1992, NHY submitted aa amended document,

( Atta chment 5) to correct minor flaws in the original data submittal.

P Terrestrial-Monitoring Not-Applicable Noise Monitoring.

• E Not Applicable

3. EPP Non-Comeliance and Corrective Actions There were 51 exceptions noted and reported in the Seabrook Stetion Discharge Monitoring Repnrts (DMRs) for the reporting period (1991). A summary description et those exceedances is provided below. The number in parentheses indicates the number of exceedances reported each month. ,

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4 ChanRes to Plant;Derinn or Cwration--

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-e New Hampshire Yankee (NHY) requested that.the diversion of the Unit 1-Protected Area stormwater to the Circulating Vater System be.

accomplished by implementing a_ limited portion of the flovpath

' todification that.vas requested by NHY in its April 11, 1991 NPDES permit 1 renewal. This request was approved by.the USEPA on October 11, 1991. - The diversion of the Unit 1 Protected Area stormwater to the Circulating' Vater System'was accomplished.by utilizing the aban'doned {

-Unit 2-circulating water pipe. .This flowpath modification includes a: l radiation monitoring skid that will continuously monitor this flowpath.

All NPDES monitoring requirements for the C4.rculating Vater System  !

(outfall-001) will be met prior to discharge. - All other-flowpath

modifications described-in the NPDES. renewal application, will not be

' implemented without EPA approval.

< b. Non-Routine Reports There were'no non-routine reports generated during this reporting period.

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.. .. 1991~EXCEEDANCE'

SUMMARY

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- Exceedance _ Comment-Jamtary-pH (6)' Secondary plant leakage (1)- Algal bloom followed by heavy rains aystem Chlorine (1) overdest dueEto start-up.

Februarv

_ pH- (2) Secondary plant leakage March pH. (3) Secondary plant leakage TSS ' (1) - . Swings in pH during neutralization results in elevated iron levels.

April pH (2) Secondary plant leakage algal growth (4) followed by heavy rains Turbidity' .( 1 ) Secondary plant resins fcund in' sump TSS, (1)' Equipment malfunction

' Chlorine (1)

- May

- pH ._ ( 5 ) Secondary plant leakage

-(3) Algal bloom with heavy rains - -

June.

, pH .(4) Secondary plant leakage ulycol (1) Equipment malfunction

- July pH _-_ (4) Secondary plant leakage

. TSS 1(1) Secondary plant resins found in sump _

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None

_ September

, , TSS- ( 3 )l. Algal bloom 4

-Total ~Flcw (1)- Heavy rains

,' - pH -  ;(11 -Algal bicem

- October:

BCD - (2)- Seasonal = lagoon turnover 1 Coliform -(2)- Transfer bottle pbssibly contaminated as chlorine level was acceptable

' pH- (1)' Secondary-plant leakage i

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s 1991 EXCEEDANCE StM4ARY

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