B12519, Environ Protection Plan,1986 Annual Environ Operating Rept

Environ Protection Plan,1986 Annual Environ Operating Rept

ML20210C243
Person / Time
Site:	Millstone
Issue date:	12/31/1986
From:	NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:
Shared Package
ML20210B724	List: B12519, Environ Protection Plan,1986 Annual Environ Operating Rept ML20210B721 ML20210C255
References
B12519, NUDOCS 8705060127
Download: ML20210C243 (7)

Text

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. 1 Attachment 1 Docket No. 50-423 B12519 MILLSTONE UNIT 3 ENVI'RONMENTAL PROTECTION PLAN 1986 ANNUAL ENVIRONMENTAL OPERATING REPORT 4

i NORTHEAST NUCLEAR ENERGY COMPANY MILLSTONE NUCLEAR POWER STATION UNIT 3 i

DOCKET NO. 50-423 l

NORTHEAST UTILITIES SERVICE COMPANY P.O. BOX 270 HARTFORD, CONNECTICUT 06141-0270 i

APRIL 1987 8705060127 870430 i

PDR ADOCK 05000423 i R PDR

'Attachm:nt 1

'B12519/Page 1-

~ April 30,1987 MILLSTONE UNIT 3 ENVIRONMENTAL PROTECTION PLAN l 1986 ANNUAL ENVIRONMENTAL OPERATING REPORT

1. INTRODUCTION As required by the Millstone Unit 3 Environmental Protection Plan (EPP),

, this Annual Environmental Operating Report includes:

o Summaries and analyses of the results of environmental protection

, activities.

o A list of EPP noncompliances.

l o A list of all changes in station design or operation which involved a i i potentially significant unreviewed environmental question.

i o A list of nonroutine reports describing events that could- result in ,

significant environmental impact.

This report covers the period January 1 to December 31,1986; Millstone Unit 3 began commercial operation during this period on April 23. Except for a four-week shutdown in July through August, and occasional power-level reductions during the year, Unit 3 was at nominal full power for the a remainder of 1986.

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2. ENVIRONMENTAL PROTECTION ACTIVITIES 2.1 Annual Report of Ongoing Biological Sw 5s (EPP Section 4.2)

Paragraph 5 of Millstone Nuclear Power Station's (MNPS) NPDES Permit, No. CT0003263, requires continuation of biological studies of supplying and receiving waters, entrainment studies, and intake impingement monitoring.

These studies include analyses of intertidal and subtidal benthic communities, finfish communities, entrained plankton, lobster populations, and winter flounder populations.

Paragraph 13 of the permit requires an annual report of these studies to the Connecticut Department of Environmental Protection. The report fulfilling that requirement for 1986, Monitoring the Marine Environment of Long Island Sound at Millstone Nuclear Power Station, Waterford, Connecticut-Summary of Studies Prior to Unit 3 Operation, presents results of all studies conducted at MNPS under two-unit operating conditions. This summary provides an easily referenced baseline of data against which the results from studies conducted under three-unit operating conditions can be compared.

Subsequent Annual Reports will present data collected af ter Unit 3 became operational.

2.2 Effluent Water Quality Monitoring Paragraph 6 of the station's NPDES permit requires monitoring and recording of many water quality parameters at MNPS Intakes and at

Att chment 1

-B12519/Page 3 April 30,1987 37 discharge points within the plant, including outfalls of each unit to the effluent quarry and outfall of the quarry to Long Island Sound.

Paragraph 11 of the permit requires a monthly report of this monitoring to the Department of Environmental Protection. The report that fulfills these requirements, Monthly Discharge Monitoring Report, includes data from all l three Millstone units. Those data that pertain to Unit 3 are summarized in Table 1.

Prior to September 19,1986 (the effective date of the NPDES permit),

l reporting of hydrazine discharge concentration was not required. However, all hydrazine discharges were within limits established by the Hydrazine

! Discharge Permit (interim guidelines developed in anticipation of issuance of an NPDES permit modification).

Af ter September 1986, no wastewater containing hydrazine was discharged.

The only exception to NPDES permit limits reported for 1986 was an oil and grease sample, collected at a condensate tank discharge in August, that was lost during transmittal to the testing laboratory. There was no visible trace of oil or grease, and no significant environmental impact was determined.

3. ENVIRONMENTAL PROTECTION PLAN NONCOMPLIANCES During 1986, no EPP noncompliances were reported for Unit 3. An Environmental Review Board (ERB) has been established to provide an independent nonradiological environmental review of corporate nuclear

Attachm;nt i B12519/Page 4 April 30,1987 activities. The ERB responsibilities include an annual audit to assure compliance with the EPP; the reporting deadline for this audit is May 31. If the ERB determines that an audit item constitutes a noncompliance, a supplement to this Annual Environmental Operating Report will be submitted.

4. ENVIRONMENTALLY SIGNIFICANT CHANGES TO STATION DESIGN OR OPERATION During 1986, no Unit 3 Plant Design Change Requests (PDCRs) met the acceptance criteria for inclusion in this report; 1.e., required an environmental review and received Plant Operation Review Committee (PORC) approval for implementation in 1986. Of the 421 PDCRs initiated during 1986, 102 received PORC approval; none of these involved unreviewed environmental issues. An additional 21 PDCRs, that had been initiated in 1985, received PORC approval in 1986; none of these involved unreviewed environmental issues either.

5. NONROUTINE REPORTS OF ENVIRONMENTALLY SIGNIFICANT EVENTS During 1986, no events occurred at Unit 3 that met the acceptance criteria ,

for inclusion in this report, i.e., required submittal of a Licensee Event t

Report (LER) from Unit 3, and involved a situation that could result in a .

v significant environmental impact. Of the 59 events that constituted reportable occurrences, none were determined to cause a significant g. 4 environmental impact. The annual ERB audit will also include review of

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B12519/Page 5-April 30,1987 .

LERs; if the . ERB determines: that an unreviewed impact 'did occur, a supplement to ' this Annual . Environmental Operating Report will: be submitted, along with an assessment of the impact.

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I Table 1. Millstone Unit 3 NPDES Data Summary, Jan. 1 - Dec. 31, 1986 discharge disch. pH disch. temp. discharge avg. avg avg settle. suspend.

2 2 2 flog range range range temp;(avg) AT FAC TRC solids solids BOD COD hydrazine (10 gpm) ( F) ( F) ( F) (mg/L) (ag/L) (mg/L) (mg/L) (mg/L) (mg/L) (ag/L)

Jan. 0 - 760 7.4 - 7.5 34 - 41 39 -

<0.05 <0.06 0.0 3.7 Feb. 0 - 760 8.0 - 8.2 36 - 47 41 3 <0.05 <0.05 0.0 4.6 Mar. 0 - 912 7.2 - 7.5 37 - 57 51 11 (0.05 (0.05 0.0 1.9 Apr. 152 - 912 7.2 - 7.9 42 - 69 57 12 <0.05 <0.05 0.0 3.8 May 0 - 912 7.8 - 8.1 47 - 78 65 13 <0.05 <0.05 0.0 1.0 June 790 - 948 7.0 - 8.0 72 - 80 79 18 (0.05 <0.05 0.0 0.6 July 486 - 942 7.5 - 7.8 66 - 80 79 14 <0.05 <0.05 0.0 1.0 Aug. 486 - 942 7.6 - 7.9 67 - 90 76 8 <0.05 <0.05 0.0 3.7 Sep. 790 - 948 7.7 - 7.9 65 - 89 82 17 <0.05 <0.06 0.0 0.5 Oct. 190 948 7.e - 7.8 75 - 66 78 18 <0.05 <0.05 0.0 13.0 Nov. 790 - 948 7.6 - 7.8 66 - 77 71 18 <0.05 <0.05 0.0 0.3 a

Dec. 926 - 942 7.5 - 7.8 62 - 72 64 19 <0.05 (0.05 0.0 2.4 Year 0 - 948 7.0 - 8.2 34 - 89 65 13 <0.05 <0.05 0.0 3.1 boric temp. pH FAC TRC set. sol. susp. sol. BOD CDP hydrazine acid conductivity lithium oil & grease No. of exceptigns 0 0 0 0 0 0 0 0 0 0 0 0 1 in year I

parameters are measured at Unit 3 discharge, except for TRC and settleable solids, which are measured at MNPS discharge (quarry cuts).

sampling for BOD, COD, and hydrazine required only when discharFing wastewater containing hydrazine.

.l some parameters are measured at more than one point within Unit 3 or only under certain operating conditions. Values represent number o' of NPDES exceptions for all discharges.

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