ML20153A983

NPDES Discharge Monitoring Rept for Aug 1998 for Pilgrim Nuclear Power Station. with

ML20153A983
Person / Time
Site:	Pilgrim
Issue date:	08/31/1998
From:	Alexander J BOSTON EDISON CO.
To:	ENVIRONMENTAL PROTECTION AGENCY, MASSACHUSETTS, COMMONWEALTH OF
References
BECO-5.98.090, NUDOCS 9809220261
Download: ML20153A983 (9)

Text

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O acaean asaan Pilgrim Nuclear Power Station Rocky Hill Road Plymouth, Massachusetts 02360-5599 September 15,1998 BECo Ltr. 5.98.090 Planning and Administration (SPA)

U.S. Environmental Protection Agency P.O. Box 8127 Boston, MA 02114-8127 Massachusetts Dept. of Environmental Protection 20 Riverside Drive

' Lakeville, MA 02347 Discharae Monitorina Reoort

Dear Sirs:

Enclosed is the Discharge Monitoring Report for Pilgrim Nuclear Power Station (PNPS),

NPDES permit number MA0003557 (Federal) and number 359 (State).

The period covered by this report is August,1998.

Should you have any questions on this report, please direct them to our Principal Marine Biologist, Mr. Robert Anderson, at (508) 830-7935.

Respectfully,  !

9909220261 990831 J. -

PDR ADOCK 05000293 Re ulatory Affairs ,

R PDR , oup Manager

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RDA/dcg/598090 - l Attachments: 1. Summary

2. Discharge Monitoring Report h

cc: U. S. Nuclear Regulatory Commission Mass. Dept. of Environmental Protection Document Control Desk Office of Watershed Management Washington, DC 20555 627 Main Street j

Worcester, MA 01608 i

U. S. Nuclear Regulatory Commission Region I

< 475 Allendale Road

King of Prussia, PA 19406 Senior NRC Resident inspector Pilgrim Nuclear Power Station

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l ATTACHMENT 1 TO BECo LETTER 5.98.090 i

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SUMMARY

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PILGRIM l DISCHARGE MONITORING REPORT- -

in accordance with the Federal Clean Water Act, as amended (33USC 1251 31 ggg: the

" CWA *), and the Massachusetts Clean Water Act, as amended (M.G.L.; Chap. 21, 26-53),  !

regarding effluent limitations, monitoring requirements and other conditions set forth in the Pilgrim NPDES permit (Federal Permit Number MA0003557, and State Permit Number 359),

L  : Parts I and ll, the following information is submitted for the period August 1998.

L 1. ' Discharae Points Covered in this Report  !

l Discharae Point Discharae identification 1 001 Condenser Cooling Water )

002 Thermal Backwash for Biofouling Control )

003 Intake Screen Wash 004,005,006, and 007 Yard Drains (April and September) 008 Sea Foam Suppression 010 Service Cooling Water 011 Makeup Water and Demineralizer Waste Discharge

. ll. Summ Y and Notes of Discharae Reoort i i

A. - . The flows at points 001 and 010 are calculated from system pump capacity and  !

are equal to the total for all pumps in each system running at full capacity for a 24-hour period.' The flow at 011 is measured by noting sump levels before and I

after discharge. Flow at point 002 is a conservative figure obtained by calculating flow if backwashing took place for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Flows at points 003 and '

008 are calculated from system pump capacity and mean operating time.

B. The temperatures at points 001 and 002 are measured by resistance temperature detectors (RTD's).-

C. Periodically, total residual chlorine (TRC) concentration in the service cooling water (010) exceeds permit requirements (0.50 ppm daily average TRC and 1.00 ppm daily maximum TRC). prior to mixing with any other stream, primarily because of the number of service water pumps in operation. Chlorine injection levels are lowered as a corrective measure. The dilution provided by the PNPS circulating water flow' keeps total residual chlorine concentrations discharged to

! Cape Cod Bay below the NPDES permit limit of 0.1 ppm.

l-l D. For stormwater outfalls 004,005,006 and 007, samples are collected by grab i sampling. Samples are handled and stored in accordance with 40 CFR 136. No

( additional inputs to these stormwater outfalls occur downstream of the sampling i locations.

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- 9 E. Intake traveling water screens were operated with dechlorination pumps on in August.

l F.

No sawdust was applied to seek and seal PNPS condenser leaks in August 1998.

G .-

The following boron and sodium nitrite discharges (ppm) occurred in August 1998 from discharge point #001. All discharges were below NPDES permit limits prior to entering Cape Cod Bay. -

Date . Gallons Concentration Concentration Discharaed . Discharaed . Before Discharae Discharaed Boron

)

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NONE i Sodium Nitrite i

NONE-H. On August 26,1998, the U.S. EPA gave approval for elimination of the SSWS continuous chlorination monitoring requirement from the PNPS NPDES Permit in ,

lieu of twice daily grab sample monitoring (BECo Letter 5.98.087).

l. On September 1,1998, the U.S. EPA (via telecon) gave approval to release PNPS firewater system contents (Plymouth town water) to storm drain #007 which discharges to the intake embayment, while repairs are made to a det.raded valve causing the leak.

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ATTACHMENT 2 to BECo LETTER 5.98.090 DISCHARGE MONITORING REPORT l

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rEnnattuE naastiAconEssam**%u a .me , - Foem Approved. -

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RFD #1 PERMIT NUMBER osscHanosuuusen F - FINALT PLYMOUTH -MA 02360 MAJOR "

FACIUTY PILGRIM NUCLEAR'PONER STATION: ygga go gy y go ony _

LoCAriON PLYMOUTH MA'02360 FROu -vo .vo vi TO va va .n *** NO DISCHARGE l__l:***

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FeRMITTH NAME/ADORESS Adi*hes#mwimame m>.ie NADONE Pouufm? OSCHARGE N -DON sysTen Form Approved NAME- BDSTCN ED #1 PILGRIM PLACT T MONITORNM REPORT [, THERMAL 3ACKNASH OMB No.20404004 AnoREss RCCKY HILL ROAD MADOD3557 002 1 (SUBR S-) APP'o g s boa, ;

RFD #1 PERMT NUMBER 0:scMWE NUMsER F - FINAL i PLYMOUTH MA.02360 MAJOR '

FAcitnY PILGRIM. NUCLEAR PONER STATION:

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LOCATION PLYMOUTH MA,02360 FRoM ve == us uo *** .NO DISCHARGE To 7= as *** -

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LOMTION PLTMOUTH MA 02360 FRoM vo uo us To yo uo as *** NO DISCHARGE l__{ ***

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