ML20141G256

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1996 Effluent Monitoring & Environ Surveillance Programs for Vallecitos Nuclear Ctr
ML20141G256
Person / Time
Site: 07000754
Issue date: 12/31/1996
From: Bassett C, Mindt A
GENERAL ELECTRIC CO.
To:
References
NUDOCS 9705220240
Download: ML20141G256 (58)
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RETU8tN TO:

B:4 GENuclearEnergy y/7/n l

P.O. Box 460

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Pleasanton,CA M566

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l Attn: Reguistory Compliance,WC Yi8

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i VALLECITOS NUCLEAR CENTER bl REGULATORYCOMPLIANCE TRANSMITTAL

Title:

Enfuent Monitorina and Environmental Surveillance Procram Dele: February 28, 1997 Document No. & Rev.:

Annual Summarv DISTRIBUTION LIST gtdr;l%bs(Siitis(DNier ldNRC, Region IV Field Omce Omoe of Director DEof FuelCyde Safety & Safeguards Oaks Omce Park, Suhe 210 U.S. Nudear Regulatory Commission, Region IV Omce of Nudear Meterial Safety & Safeguards 1450 Maria Lane 611 Ryan Plaza Drive, Suite 400 U.S. Nuclear Regulatory Commission WalnutCreek,CA 94596 Arlington,TX 76011 Washington,D.C. 20555 Attn: C. A. Hooker Mr. William Lew Califomia Regional Water Quality Control Board Alameda County Environmental Health Radiologic Health Branch San Francisco Bay Region EnvironmentalProtechon Division Department of Health Services 2101 Webster Street. Suite 500 1131 Hartior Bay Parkway, Room 250 2151 Berkeley Way Oakland,CA 94612 Alameda, CA 94502 4 577 Berkeley,CA 94704 Attn: Lila Tang Attn: Robert Weston GE Nuclear Energy Mr.PaulFox Rebecca Failor 1299 Pennsylvania Avenue. N.W.

Amencan Nuclearinsurers Environmental Protechon Department Suite 1100 Town Center, Suite 300S Lswrence Uvermore National Laboratory Washington, D.C. 20004 29 South Main Street P.O. Box 808, L 255 Attn: Paige Negus Wast Hartford, CT 06107 2445 Uvermore,CA 94550 INTERNAL DISTRIBUTION'

)

C. W Bassett, V18 H. R. Stricider, M/C J26 (WLM)

A. F. Mindt, V18 San Jose Library, M/C 728 Senior Liznsing Engineer yF 4 M Firdissue.

Forinformation only.

Revised dccument. Destroy previous issue.

For reviewlcomment.

O PCN Insert attached updated pages into document; For signature.

decard pages which were removed.

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@ Controlled distribution; acknowledgment required.

Sign below and retum transmittal as marked above.

Forfurtherinformation contact:

l 9705220240 961231 PDR ADOCK 07000754 Frank Mindt, MC V18, I

Keceipt ACKnowleagment (510) 882 4248 C

PDR kk,k !

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Classi Januaiv '397 GENuclearEnergy Vallecitos Nuclear Center Pleasanton. CA 94566 Effluent Monitoring and Environmental Sutweillance Programs Annual Summary 1996 Vallecitos Nuclear Center

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Chssi GE NuclearEnergy Vallecitos Nuclear Center Mensanton, CA N566 i

EFFLUENT MONTTORING AND ENVIRONMENTAL SURVEILLANCli PROGRAMS 4,

ANNUAL

SUMMARY

- 1996 c

VALLECITOS NUCLEAR CENTER l

Prepared By:

/

.F. Mincit, Specialist Radiation Monitoring

' Regulatory Compliance b

Approved By:

2 y!$1 C.'W. Bassett, Manager Regulatory Compliance

NOTICE AND DISCLAIMER

. This document was prepared by or for the General Electric Company. Neither the General Electric Company nor any of the contributors to this document:

A.

Makes any warranty or representation, expressed or implied, that the use of any information disclosed in this document may not infringe privately owned rights; or i

B.

Assumes any responsibility for liability or damage of any kind which may result from the use of any information disclosed in this document.

)

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a

CONTENTS Eage LIST OF FIGURES AND TABLES...............................................................................

iv v

ABSTRACT................................................................................................................

I.

INTR O D U CTI O N.....................................................................................................

1 1

A.

Effluent M onitoring P rogram.............................................................................

1.

Waterborne Effluents.................................................................................

1 2.

Airl o rne Effluents...................................................................................

2 B.

Environmental Surveillance Program..................................................................

2 4

C.

Co mpli an c e S ummary........................................................................................

1.

Nuclear Regulatory Conunission and California Department o f H ealt h Service s....................................................................................

4 2.

California Regional Water Quality Control Board.....................................

4 II.

INFLUENT AND EFFLUENT M ONITORING DATA...........................................

6 A.

Wa t e rb o rn e Rel ease s..........................................................................................

6 1.

Influent and Effluent..............................................................................

6 2.

Influent (Nonradioactive Parameters)......................................................

6 3.

Influent and Effluent (Radioactive Parameters)...........................................

6 4.

N on radio active Releases...........................................................................

11 28 B.

St a ck M o nit o rin g.................................................................................

III. ENVIRONMENTAL SURVEILLAN CE DATA....................................................

35 A.

Surveillance for Waterborn e Releases................................................................

35 35 1.

R ec eivin g Wate rs..................................................................................

2.

G r oun d W at e rs.....................................................................................

41 3.

St ream B ott om Sediments......................................................................

43 B.

Surveillance for AirborneReleases.....................................................................

44 1.

Environmental Air Samples..........................

44 2.

Cloud-G amma M onit o rs...........................................................................

44 47 3.

Vegetation......

49 IV. M ETE OR O L OG Y...........................................................................................

LIST OF FIGURES AND TABLES Eguce Titic Eage 1

Waste Treatment Facility...............................................................................

3 2

Analytical Laboratories and Analyses....................................................................

5 30 3

Buildin g 102 (Stack 4)...........................................................................................

4 Nuclear Test Reactor (Stack 16).............................................................................

31 5

Composite - All Stacks Except Numbers 4 and 16.............................................

32 33 6

Composite - All Stacks........................................................................................

7 VNC Plot Plan Indicating Sample Well and Station Locations............................

36 37 8

General Site Layout - VN C................................................................................

9 Environmental Air Stations and Cloud-Gamma Monitors................................

45 Analytical Results for Environmental Air Stations for Particles (pCi/cc)............ 46a/46b to 48 11 Vegetati on S ample Locations...............................................................................

Iable 1

Influent and Effluent Water Volumes..............................................................

7 2

Influent Nonradioactive Constituents...................................................................

8 3

Influent and Effluent Radioactivity in Water.....................................................

9 4

Water Effluent - Three.M onth Composite..........................................................

10 10 5

Average Concentrations in Industrial Effluent................................................

11 6

Summary of Nonradioactive Effluent Tests.........................................................

7 Water Effluent Compliance Summary............................................................... 12a/12b 8

Reteation Basin / Holding Tank Samples...............................................................

13 Weekly Effluent G rab Sample............................................................................. 14/14c 9

10 Annual Waste Characteristics (Oil and Grease)...............................................

15 11 Annual Waste Characteristics (Total Dissolved Solids).......................................

16 12 Annual W.ste Characteristics (Total Suspended Matter)....................................

17 l

13 Annual Waste Characteristics (Dissolved Oxygen)............................................

18 14 Annual Waste Charaete ristics (Chloride)...........................................................

19 15 Annual Waste Characteristics (Copper)...........................................................

20 16 Annual Waste Characteristics (Mercury).........................................................

21 17 Annual Waste Characteristics (Total Chromium)..........................................

22 18 Annual Waste Characteristics (Lead)............................................................

23 19 Annual Waste Characteristics (Zinc)..............................................................

24 20 Annual Waste Characteristics (Silver)..........................................................

25 21 Annual Waste Characteristics (Nickel).........................................................

26 22 Water Effluent Nonradiological Constituents - Monthly Samples.......................

27 Stack Height, Size and Flow Rate..............................................................

29 23A 29 23B Operating Components Serviced...............................................................

38 24 Compliance Summary - Receiving Waters.........................................................

25 Receiving Waters Analyses (nonradiological)...........................

39 40 26 Recei ving Waters Analyses (radiological)..............................................................

42 27 GroundWarer...................................................................................................

28A Stream Bottom Sediments - Description and Schedule of Samples.......................,

43 28B B ott om Sedim en ts.......................................................................................

43 44 29 Cloud G amma M onit o rs................................................................................

47 30A Desc ription of Vegetation Samples...............................................................

30B Annual Vegetation Sample Analytical Results (pCi/ gram).............................

47 iv

i ABSTRACT ANNUAL,1996 The data tables in this report include all results for the calendar year,1996.

All treated sanitary wastewater was disposed of on site by a sprinkler irrigation system. No surface runoff was observed during this report period.

Heavy rains in February resulted in considerable infusion of ground water into the sanitary drain system. The resulting increase in the sprinkling, coupled with the rainfall directly on the benned area where the sanitary waste is sprinkled, caused ponding in the bermed area. At the same time there was e failure of the chlorination system. This resulted in a high level of coliform in the puddled water.

None of the coliform-contaminated water overflowed the berm. The water in the berm was chlorinated. The water has since been absorbed into the ground.

The sprinkhng area was modified by placing an additional berm running from the south berm parallel to the west berm and approximately half as long. This was done to minimin the puddling in the southwest corner of the field.

On October 31,1996, approximately 6,000 gallons of liquid and solid waste were removed from the site Imhoff tank by A 1 Septic Tank Service,Inc., Hayward, CA (disposed of at the Vallejo Sanitation Facility, Vallejo, CA).

General Electric was in compliance with the limitations set in the NPDES Permit No. CA0006246, Order 90-05b, issued May 18,1990, for all parameters during 1996 with the following exceptions:

A level of 24 mg/l of oil and grease was detected in the January sample. The problem was traced 1.

to the use of an inappropriate sample container (i.e., a jar with a waxed inner liner on the lid). A resample was < 5 mg/1.

2. The zine level in the January sample exceeded release limits (110 pg/l vs. a limit of 58 g/l). No source of zine could be determined. The February sample was within limits.
3. A low survival rate,65%, for the stickleback was observed in January. A reumple had a survival rate of 85%. Because of the 65% result, the three-month median was not met for the first quaner.

An 80% survival rate in October, a 95% survival rate in November,2nd an 85% survival rate in 4.

December for the stickleback asulted in a three-month median of 85%, below the 90% limit.

There were no changes in the site operations that would account for the drop in survival rates.

During the same period the fathead minnow survival rate was within limits at 100%.

V

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EFFLUENT MONITORING AND ENVIRONMENTAL SURVEILLANCE PROGRAMS ANNUAL

SUMMARY

- 1996 VALLECITOS NUCLEAR CENTER 4

I. INTRODUCTION This report summarizes activities and data for the Effluent Monitoring and Environmental Surveillance Programs for the calendar year of 1996 at the Vallecitos Nuclear Center (VNC).

Effluent monitoring includes measurements of airborne radioactivity releases from facility stacks and the measurement of radioactive and nonradioactive constituents in water discharged through the site sanitary and industrial wastewater systems. Environmental surveillance encompasses the measurement of radioactivity in air near the site perimeter and in neighboring streams, wells, and vegetation.

-A.

EFFLUENT MONITORING PROGRAM The Effluent Monitoring Program has been developed to ensure that VNC site release limits for water are not exceeded and, additionally, to ensure that releases are maintained as low as reasonably a:hievable. Release limits for numerous nonradiological constituents have been established by the California Regional Water Quality Control Board (CRWQCB). Radiological release limits have been establishe'd by the Nuclear Regulatory Commission (NRC) and by the California Department of Health Services (DOHS).

1.

Waterborne Fffluents Waterborne effluents released from VNC site facilities can be classified as industrial wastewater or clean water.

1

Industrial wastewater consists of noncontact cooling water which is piped to one of three available 60,000-gallon retention basins. Tests for pH and radioactivity are performed on a water sample from each bain prior to discharge into Vallecitos

. Creek. If the pH is out of limits, it is adjusted before release. In addition, samples from all basin discharges are accumulated and analyzed at specified interyds for a variety of constituents.

i Clean water discharges consist of storm runoff and small quantities of water known to contain no contaminants. The latter includes condensate from building air conditioning equipment. These waters flow directly to drainage ditches which enter Vallecitos Creek.

Smitary wastes are collected in an Imhoff tank before undergoing sand filtration and chlorination (by addition of sodium hypochlorite solution). Processed sanitary wastewater is discharged by land disposal (irrigation) onto VNC property (Figure 1).

2.

Airborne Fffluents Airborne effluents consist of discharges from VNC facility stacks. Stack releases are monitored for radioactivity even though multistage filtering is accomplished prior to discharge.

B.

ENVIRONMFNTAL SURVFIT I ANCE PROGRAM Samples are obtained within or beyond the site boundary to ascertain to what extent, if any, VNC discharges are detectable in the environment. Ground water, stream bottom sediments, and vegetation are sampled for coastituents which could hne been dispersed by water. Air samples are utilized to detect the presence of radioactivity in air, i

2

j C.

COMPLIANCE SUMM ARY 1.

Nuclear Reculatory Commiuien snel California Depanment of Hemith Services All VNC liquid waste releases were well within the limits specified by these agencies. There were no items of noncompliance. Compliance limits are listed in 10CFR20, Appendix B, and California Code of Regulations Title 17. Compliance with these limits for the release of individual basins is determined by gross alpha and beta analyses based on the most restrictive isotopes which could reasonably be introduced into the system.

All airborne effluents discharged from VNC facility stacks met the limits of 10CFR20, Appendix B, and California Code of Regulations Title 17, 2.

California Regional Water Quality Control Board Nonradioactive discharge parameters are established by CRWQCB Order 9M58 and NPDES Permit No. CA0006246. Unless noted in the Abstract to this repon, all industrial wastewater discharged from the site met the limits set in those documents. The permit does not allow the discharge of sanitary waste. That material is processed and disposed to the land via an irrigation system.

Although the discharge permit issued to VNC does not specify sampling criteria for this land discharge, the following sampling program is being practiced; total coliform (two times a month) a.

b.

pH (per discharge) radioactivity (per discharge) c.

Records of these test parameters are being maintained at VNC.

I I

4

LISTING OF CERTIFIED LABORATORY ANALYSES AT GENERAL ELECTRIC COMPANY, VALLECITOS NUCLEAR CENTER -

I.

pH 4.

Total Alpha-EmittingRadioactivity 2.

Dissolved Oxygen 5.

Total Beta-Gamma-Emitting Radioactivity 3.

Temperature LISTING OF LABORATORIES AND ANALYSES PERFORMED FOR GENERAL ELECTRIC COMPANY, VALLECITOS NUCLEAR CEh"fER FOR COMPLIANCE PURPOSES l

I.

Sequoia Analytical Performs fish bioassays, total coliform 680 Chesapeake Drive and analyses on water as required.

Redwood City, California 94063 2.

Davi Lab Performs most radiological analyses on 2356 San Pablo Avenue water, stream bottom and vegetation Pinole, California 94564 samples.

The director of each laboratory listed above signs the analytical reports that the General Electric Company receives, and each such report is available for inspection.

l FIGURE 2. ANALYTICAL LABORATORIES AND ANALYSES 5

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I IL INFLUENT AND EFFLUENT MONITORING NTA A.

WATERBORNE RFT F ASES 1.

Innuent and FMuent Daily industrial and sanitary wastewater discharge and monthly influent volumes are summarized in Table 1.

2.

Innuent (Nonradioactive Parameters)

A summary of data relating to nonradioactive influent parameters is given in Table 2.

3.

InHuent 2nd FMuent (Radioactivity Parameters)

Radioactivity measurements for influent and effluent waters are summarized in Tables 3 and 4. Table 3 indicates essentially no difference between measurements of influent (from the San Francisco water supply system) and monthly composites ofindustrial effluent.

Aliquots of daily samples are combined to form the monthly composite. The monthly composite results will differ from a simple summation of daily sample analyses because: (1) the monthly composite analysis is performed by a contractor laboratory with minimum sensitivities different from site counting equipment; (2) the m6nthly composite analysis is performed on a much larger sample; and (3) most of the short half life naturally occurring radioisotopes have decayed below detectability by the time the monthly composite is analyzed.

The data in Table 3 are derived by summing data obtained from measurements of short interval (daily) water releases. Many of these measurements were less than the detection limits of the laboratory's measurement methods. The data listed x, "less than" numbers necessarily include the summation of these detection limits (i.e., a summation of "less than" numbers) and represent maximum possible values for the sample analyses.

The results from the monthl) c.omposites and other samples analyzed by the contractor laboratory are repcced as a calculation of actual measured values minus an average background value. As a result of this calculation, values determined to be within the statistical background (i.e., average background value i statistical variance) may be listed in the table as positive or negative numbers. In this way, the positive and r.egative numbers within the statistical background band'will

" cancel" each other out. According to the contractor laboratory, this is a standard method of reporting.

6

' INFLUENT AND EFFLUENT WATER VOLUMES TOTAUDAILY EFFLUENT (GALLONS)

TOTAL SANITARY

  • INDUSTRIAL MONTHLY FRESH TOTAL OFFSITE, BASINS ON-SITE, LAKE OTHER ON-SfTE WATER INFLUENT TOTAL.

DAILY TOTAL DAILY TOTAL DAILY

. TOTAL DAILY TOTAL DAILY MONTH (GALLONS) MONTHLY AVERAGE MONTHLY AVERAGE MONTHLY AVERAGE MONTHLY AVERAGE MONTHLY AVERAGE JANUARY 1.36E+06 3.00E+05 9.68E+03 1.55E+06 5.00E+04 1.55E+06 5.00E+04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 FEBRUARY 1.17E+06 2.50E+05 8.62E+03 1.60E+06 5.52E+04 1.60E+06 5.52E+04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 y

MARCH 1.22E+06 2.00E+05 6.45E+03 1.70E+0S 5.48E+04 1.70E+06 5.4BE+04 0.00E+00 0.00E+00 0.00E+00 0.OOE+00 APRIL 1.59E+06 1.00E+05 3.33E+03 1.35E+06 4.50E+04 1.35E+06 4.50E+04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 MAY 1.74E+06 5.00E+04 1.61E+03 - 1.15E+06 3.71E+04 1.15E+06 3.71E+04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 JUNE 1.64E+06 0.00E+00 0.00E+00 1.00E+06 3.33E+04 7.00E+05 2.33E+04 3.00E+05 1.00E+04 0.00E+00 0.00E+00 JULY 1.42E+06 5.00E+04 1.61E+03 9.00E+05 2.90E+04 - 5.00E+05 1.61E+04 4.00E+05 1.29E+04 0.00E+00 0.00E+00 AUGUST 1.59E+06 5.00E+04 1.61E+03 1.00E+06 3.23E+04 - 5.50E+05 1.77E+04 4.50E+05 1.45E+04 0.00E+00 0.00E+00 SEPTEMBER 1.94E+06 5.00E+04 1.67E+03 1.05E+06 3.50E+04 1.00E+06 3.33E+04 5.00E+04 1.67E+03 0.00E+00 0.00E+00 OCTOBER 1.29E+06 5.00E+04 1.61E+03 8.50E+05 2.74E+04 8.50E+05 2.74E+04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 NOVEMBER 1.30E+06 - 5.00E+04 1.67E+03 8.00E+05 2.67E+04 8.00E+05 2.67E+04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 DECEMBER 9.65E+05 1.50E+05 4.84E+03 9.00E+05 2.90E+04 9.00E+05 2.90E+04 0.00E+00 0.00E+00 0.00E+00 0.00E+00

  • All sanitary wsste emuent is disposed on land via a sprinkler his&xi system as of July 1,1977.

TABLE 1 I

INFLUENT NONRADIOACTIVE CONSTITUENTS *

(mg/l)

MONTH-CHLORIDE CHROMlUM COPPER LEAD MERCURY ZINC NICKEL oH January '

. 3.7 -

<0001

< 0.010

< 0.002

<0.0002 0.312

<0.005 8.0 February 46

< 0 010

< 0.010

<0002

<0.0002 0.022

< 0 005 65 March 4

0 001

<0010

<0002

<00002 0.016

<0005 80 April 20

<0.001

<0010

<0002

<0.0002 0 150

<0 005 86 May 4i 0 001 -

<0010

< 0002

<00002 0.018 40005 2.9 #

June 2.3 0.005

<0010

< 0.002

<0.0002 0.016 0.005 8.7 July 38 0.002

<0010 0.002

<0.0002 0.085

< 0.005 8.6 August 3.5

<0001

<0.010

< 0.002

<0 0002 0.031

<0.005 8.0 September 36 0.002

<0.010

< 0.002

< 0 0002 0 018

<0.005 8.2 October 35 0 002

<0 010 0 018

< 0 0002 0 350

<0.005 84 Novemoer 4.5 0 002

<0 010

<0002

<00002 0.037

<0 005 8.0 December 2.7

<0001

<0010

< 0.002

<0.0002 0 012

<0.005 85

<* Indcates less than the detection limit for the measurement method.

  1. Sample acdMed by error.

l TABLE 2 8

INFLUENT AND EFFLUENT RADIOACTMTY IN WATER (All data in pCiA except as noted)

CONTRACT SERVICE DATA

  • CONTRACT SERVICE DATA
  • DAILY BASIN EFFLUENT SAMPLES, VNC DATA
  • AVERAGE EFFLUENT TOTAL ACTMTY FRESH WATER MONTHLY EFFLUENT CONCENTRATION DISCHARGED FOR INFLUENT COMPOSITE TOTAL ALPHA BETA-GAMMA FOR LAST 12 MOS.

PAST 12 MOS., mci NO.

MONTH ALPHA B-G ALPHA B-G SAMPLES MAX MIN AVG MAX MIN AVG ALPHA B-G ALPHA B-G JANUARY 0.300 1.420 0.960 0.720 31

<20

<20

<20

<50

<50

<50 0.993 1.095 0.057 0.071 FEBRUARY 0.500 1.200 1.430 2.300 32

<20. <20

<20 <50

<50

<50 0.970 1.238 0.057 0.082 MARCH (0.00 )0 1.960 1.100 QT000; 34

<20 -<20

<20 <50

<50 <50

-1.043 1.052 0.082 0.058 APRIL 5890 3.790 0.500 3.500 27

<20

<20

<20 <50

<50

<50 0.950 1.267 0.054 0.070 3.400 1.400 2.000 23

<20

<20

<20

<50

<50

<50 1.028 1.273 0.058 0.071 (6.'00)0' MAY JUNE 0.590 3.900 1.830 1.600 20

<20 <20

<20 <50

<50

<50 1.112 1.385 0.082 0.078 JULY 0.720 1.830 4

18

<20

<20

<20 <50

<50 <50 1.145 1.878 0.081 0.087 e

AUGUST 0.850 2.310 0.000 000 ~7 20

<20

<20

<20 <50 <50

<50 1.085 1.808 0.058 0.084 SEPTEMBER CO M 1.790 70 0.000 21

<20

<20 <20 <50 <50 <50 1.108 1.508 0.000 -

0.079 OCTOBER 1.040 8.100 6.130 17

<20 <20

<20 <50 <50 <50 1.808 1.888 0.078 0.082 NOVEMBER 3.

2.890 4.250 16

<20

<20 <20 <50

<50

<50 1.808 2.223 0.085 0.105

~'

DECEMBER CO.

1.350-1.120 1.170 18

<20

<20 <20 <50

<50

<50 1.851 2.188 0.006 0.102 YTD AVERAGE 1.083 2.193 1.851 2.168 X

X X

X X

X X

X X

X X

TABLE 3

  • See Sectum I.C.3.

TABLE 4. WATER EFFLUENT-THREE MONTH COMPOSITE CONTRACTOR SERVICE DATA pCill l

PERIOD l TRITIUM l Cs-137 l Co-60 l 1/1/96 - 3/31/96 123.00 0.00 0.00 4/1/96 - 6/30/96 145 00 2.35 0.19 7/1/96 - 9/30/96 653.00 4.14 0.76 10/1/96 - 12/31/96 913.00 0.00 0.00 ECL*

1,000,000 1,000 3,000

Annual average release concentrations for the past 5 years are shown in Table 5 below. These data are from Monthly Effluent Composites.

TABLE 5 AVERAGE CONCENTRATIONS IN INDUSTRIAL EFFLUENT pCill l ALPHA l BETA l TRITIUM l 1991 0.70 2.53 86.6 1992 0.59 1.10 105.1 1993 0.55 1.05

-40.5 1994 0.50 1.39

-9.9 1995 0.92 0.98 321.0 1

10

E 4.

Nnnradin.ce;ve Relascas Summaries of data relating to nonradioactive effluent parameters are given in Tables 7 through 22. A summary of the nonradioactive effluent sample program is given in Table 6. The CRWQCB compliance limits are summarized in the Compliance Summary, Table 7. Although measurements are required, there are no compliance limits for dissolved oxygen and turbidity.

TABLE 6.

SUMMARY

OF NONRADIOACTIVE EFFLUENT TESTS I.

Daily - pH (Taken from each basin prior to release.)

II.

Weekly (Analyses performed on a grab sample once per week.)

Total Coliform Bacteria" (grab sample taken two times a month, sanitary only)

Total Suspended Matter Temperature III.

Monthly (500-ml composite of each basin discharge except those noted.)

Dissolved Oxygen (grab sampled once per month)

Total Dissolved Solids Turbidity (grab sampled once per month)

Chloride Copper (dissolved copper only; grab sampled once per month)

Mercury Chromium Lead Nickel Zinc Silver (one monthly composite per quaner)

Fish Toxicity (grab sampled once per month)

Oil and Grease (grab sampled once per month)

  • Not required.

11

WATER EFFLUENT COMPLIANCE

SUMMARY

(Tests failed versus test performed) l Radological Quality Chionde Chromium Copper Mercury Silver Lead Nickel Inc 90-No Discharge Max Day Max Max Max Max Max Max Max in Excess of Daily Avg.

Daily Daily Daily Daily Daily Daily Daily 10CFR20 250 60 0.011 0.02 0.001 0.0023 0.0056 0.0071 0.058 MONTH ECL mg4 mg/l mga mgn mga mg/l mg/l mg/l mg/l JAN 0/31 0/1 0/1 Oli 0/1

'0/1 N/A 0/1 Ol1 1/1 FEB 0/32 0/1 Ol1 0/1 Oli 011 Oli 0/1 Ol1 0/1

3 MAR 0/34 Oli 0/1 0/1 Oli 0/1 N/A Ol1 Oli 0/1 APR 0/27 0/1 Oli 0/1 Oli 0/1 N/A Oli 0/1 Oli MAY 0/23 0/1 0/1 Oli 0/1 0/1 Oli 0/1 Oli 0/1 JUN 0/20 Ol1 Oli Oli 0/1 0/1 N/A 0/1 Ol1 Oli JUL 0/18 0/1 0/1 Oli 0/1 0/1 N/A Oli 0/1 0/1 AUG 0/20 0/1 0/1 Oli Oli Ol1 Oli 0/1 Oli 0/1 SEP 0/21 Ol1 0/1 0/1 Oli 0/1 N/A 0/1 Ol1 Oli OCT 0/17 0/1 0/1 Ol1 Oli 0/1 N/A 0/1 Oli 0/1 NOV 0/16 0/1 Oli 0/1 Oli 0/1 0/1 Oli 0/1 0/1 DEC 0/18 Ol1 0/1 0/1 Oli 0/1 N/A Oli 0/1 Oli TABLE 7 5

~~~

~

WATER EFFLUENT COMPLIANCE

SUMMARY

(Tests failed versus test performed)

Total Oil Total Fish Toxicity Suspended and Dissolved 96-Hour pH Matter Temp.

Grease Solids Bioassay 90-Median Median Monthly Weekly Monthly Max.

Day Max for 3 for 3 6.5 -

Avg.

Avg.

Max.

Avg.

Daily Avg.

Daily

Tests, Tests, to 30 45' 90 F 10 20 250 500 Stickleback FH Minnow MONTH 8.5 mgn mg4 (32 C) mg4 mg4 mgn mg4 90 %

90 %

JAN 0/31 0/5 Oli 0/5 Oli 0/1 N/A Oli 1/3 0/3 FEB 0/32 0/4 Ol1 Old Oli 0/1 0/1 0/1 1/3 0/3

^,

MAR 0/34 0/4 0/1 0/4 0/1 0/1 N/A 0/1 1/3 0/3 APR 0/27 0/4 Oli 0/4 0/1 Oli N/A 0/1 0/3 0/3 MAY 0/23 0/5 Ol1 OE) 0/1 0/1 Oli O/1 0/3 0/3 JUN 0/20 0/4 Ol1 Old Ol1 Oli N/A Ol1 0/3 0/3 JUL 0/18 0/4 0/1 0/4 Ol1 0/1 N/A 0/1 0/3 0/3 AUG 0/20 0/5 0/1 0/5 0/1 Ol1 0/1 0/1 0/3 0/3 SEP 0/21 0/4 0/1 0/4 0/1 0/1 N/A 0/1 0/3 0/3 OCT 0/17 0/5 Oli 0/4 Oli 0/1 N/A 0/1 0/3 0/3 NOV 0/16 0/4 Oli 0/3 Ol1 O!1 Ol1 Oli 0/3 0/3 DEC 0/18 0/4 Oli 0/4 Oli 0/1 N/A 0/1 1/3 0/3 TABLE 7 contd

{

RETENTION BASIN / HOLDING TANK SAMPLES (Maximum Limits: 6.5 to 8.5 pH and 32 degrees C.)

i pH Temperature (degeses C)

Number Number of of konth Samples Max Min Avg Samples Max Min Avg Isnuary 31 7.7 6.6 7.1 5

19 15 16 Fabruary 32 8.0 7.1 7.5 4

18 14 16 March 34 8.5 6.7 7.5 4

19 13 16

(

April 27 7.7 6.8 7.4 4

25 18 22 May 23 8.5 7.1 7.7 6

24 19 21 June 20 8.5 7.2 7.9 4

23 20 22

(

July 10 8.5 7.0 7.6 4

26 24 25 August 20 8.5 6.9 7.6 5

28 23 24 Laptember 21 8.5 7.0 7.9 4

23 20 22 October 17 8.5 7.0 7.7 5

25 17 21 November 16 7.7 7.0 7.3 3

19 16 18 December 18 7.7 6.7 7.2 4

17 13 14 l

YTD Total 277 52 YTD Maximum 8.5 28 YTD Minimum 6.6 13 YTD 7.5 10 3 Average TABLE 8 13

WEEKLY EFFLUENT GRAB SAMPLE *

(Maximum daily limit 45 mg/l TSM)

TOTAL SUSPENDED SAMPLING DATE MATTER 1/3/96

< 1.00 1!10/96

< 1.00 1/17/96

< 1.00 1/23/96

< 1.00 1/31/96 1.50 MONTHLY AVERAGE

< 1.10 2/7/96

< 1.00 2/14/96

< 1.00 2/21/96

< 1.00 2/2T M 2.50 MONTHL

.VERAGE

< 1.38 A/96

< 1.00 3/13/96

< 1.00 3/20/96

< 1.00 3/28/96

< 1.00

~

MONTHLY AVERAGE

< 1.00 4/3/96 1.00-4/11/96 3.50 4/17/96

< ~ 1.00 4/24/96 2.50

~~

MONTHLY AVERAGE

< 2.00 5/1/96 1.00 f

5/8/96 6.00 5/14/96

< 1.00 5/22/96

< 1.00 5/30/96 -

1.00 MONTHLY AVERAGE

< 2.00 f

L 14 e

WEEKLY EFFLUENT GRAB SAMP.E*

(Maximum daily limit: 45 mg/lTSMl

. TOTAL SUOPENDED

^

SAMPLING DATE MATTER 6/5/96 6.50 6/13/96 1.00 6/19/96

< 1.00 6/27/96

< 1.00 MONTHLY AVERAGE

< 2.38 7/3/96

< 1.00 7/11/96 1.50 7/17/96

< 1.00 7/25/96

< 1.00 MONTHLY AVERAGE

< 1.13 8/1/96

< 1.00 8/7/96

< 1.00 8/15/96

< 1.00 S/22/96

< 1.00 8/28/96

< 1.00 MONTHLY AVERAGE

< 1.00 9/4/96

< 1.00 9/11/96

< 1.00 9/19/96

< 1.00 9/26/96

-< 1.00

< 1.00 MONTHLY AVERAGE

,. Z.

- - ~ -

10/2/96

< 1.00 10/10/96

< 1.00 10/17/96

< 1.00 10/23/96

< 1.00 10/31/>S

< 1.00 MONTHLY AVERAGE

< 1.00 14a l

i

WEEKLY EFFLUENT GRAB SAMPLE *

(Maximum daily limit 45 mg/lTSM)

TOTAL SUSPENDED SAMPLitIG D ATE MATTER 11r:,/96

< 1.00 11/14/96

< 1.00 i

11/21/96 3.40 i

11/27/96

< 1.00 MONTHLY AVERAGE

< 1.60 1

12/4/96

< 1.00 1

12/11/96

< 1.00 12/19/96

< 1.00 4

12/26/96

< 1.00 MONTHLY AVERAGE

< 1.00

  • "<" Indicates less than the detection limit for the measurement method.

I

)

TABLE 9 1

I 2

)

J

)

I f

14b

ANNUAL WASTE CHARACTERISTICS *

(30 day average release limit 10.0 mg/l)

(Daily maximum release limit 20.0 mg/l)

OIL AND GREASE CONCENTRATION (mg/l)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED January 24 8

<5

< 14.

1 2

February

<5

<5

< 5.0 0

1 March

<5

<5

< 5.0 0

1

@ril

<5

<5

< 5.0 0

1 May

<5

<5

< 5.0 0

1 June

<5

<5

< 5.0 0

1 July

<5

<5

< 5.0 0

1 August

<5

<5

< 5.0 0

1 September 5.3 5.3 5.3 0

1 October 8.8 8.8 8.8 0

1 November

<5

<5

< 5.0 0

1 December 89 0.9 8.9 0

1 TD-24 MAXIMUM YTD

<5 MINIMUM YTD

< 7.08 AVERAGE YTD 1

13 TOTAL

"$" indicates less than the detection limit for measurement method.

  1. Improper sample container used.

TABLE 10 15

I ANNUAL WASTE CHARACTERISTICS *

(90 day average release limit 250 mg/1)

(Daily maximum release limit 500 mg/l)

TOTAL DISOLVED SOLIDS CONCENTRATION (mg/l)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED January 64 64 64.0 0

1 February 130 130 130.

0 1

March 92 92 92.0 0

1 April 98 98 98.0 0

1 May 70 70 70.0 0

1 June 140 140 140.

0 1

July 43 43 43.0 0

1 August 150 150 150.

0 1

September 40 40 40.0 0

1 October 65 65 65 0 0

1 November -

48 48 48.0 0

1

~

December 83 83 83.0 0

1 TD 150 MAXIMUM YTD 40 MINIMUM YTD 85.25 AVERAGE YTD 0

12 TOTAL.

  • "<" Indicates less than the detection limit for measurement method.

I TABLE 11 I

16 e

4 ANNUAL WASTE CHARACTERISTICS *

(30 day average release limit 30.0 mg/I)

TOTAL SUSPENDED MATTER CONCENTRATION (mg/l)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED January 1.5

<1

< 1.10 0

5 February 2.5

<1

< 1.38 0

4 March

<1

<1

< 1.00 0

4 April 3.5

<1

< 2.00 0

4 May 6

<1

< 2.00 0

5 June 6.5

<1

< 2.38 0

4 I

July 1.5

<1

< 1.13 0

4 August

<1

<1

< 1.00 0

5 September

<1

<1

< 1.00 0

4 October

<1

<1

< 1.00 0

5 l

November 3.4

<1

< 1.60 0

4

,l

/

December

<1

<1

< 1.00 0

4

~

YTD 6.5 MAXIMUM YTD

<1 MINIMUM

< 1.37 YTD AVERAGE 0

52 YTD TOTAL

  • *<" indicates less than the detection limit for measurement method.

TABLE 12 17

ANNUN. WASTE CHARACTER;STIC3*

s D SOLVED OXYGEN IN RETENTION BASIN CONCENTRATION (mg/l)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED January 9.9 9.9 9.90 No Limit 1

February 9.5 9.5 9.50 No Limit 1

Maren 9.1 9.1 9.10 No Limit 1

April 8.2 8.2 8.20 No Limit 1

May 7.3 7.3 7.30 No Limit 1

June 8.5 8.5 8.50 No Limit 1

Julv 7.5 7.5 7.50 No Limit 1

August 7.8 7.8 7.80 No Limit 1

September 7.7 7.7 7.70 No Limit 1

October 7.8 7.8 7.80 No Limit i

November 9

9 9.00 No Limit 1

December 9

9 9.00 No Limit 1

yid 9.9 MAXIMUM YTD 7.3 MINIMUM YTD 8.44 AVERAGE YTD No Limit 12 TOTAL-TABLE 13 18 1

f ANNUAL WASTE CHARACTERISTICS *

(90 day average release limit 60 ng/l)

(Daily maximum release limit 250 mg/l)

CHLORIDE

{

CONCENTRATION (mg/l)

NO. OF SAMPLES

(

SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED

- January

'5 5

5.00 0

1 February 15 15 15.0 0

1 Maren 31 31 31.0 0

1 April 12 12 12.0 0

1

' May 10 10 10.0 0

1 June 7.6 7.6 7.60 0

1 July 4.9 4.9 4.90 0

1 August 4.3 4.3 4.30 0

1 September 4

4 4.00 0

1

[

October 3.8 3.8 3.80 0

1 November 2.9 2.5 2.90 0

1

(

December 7.9 7.9 7.90' O

1

' TD 31 MAXIMUM YrD 2.9 MINIMUM YTD.

9.03 AVERAGE YTD 0

12 TOTAL

  • "<" Indicates less than the detection limit for measurement method-TABLE 14 19 L

f f

ANNUAL WASTE CHARACTERISTICS *

(Daily maximum release limit 0.02 mg/l)

Di LVED COPPER

{

CONCENTRATION (mg/l)

NO. OF SAMPLES f

SHOWING TOTAL MONTH

' MAX MIN AVG VIOLATION ANALYZED f

January

< 0.010

< 0.010

< 0.010 0

1 February

< 0.010

< 0.010

< 0.010 0

1 March

< 0.010

< 0.010

< 0.010 0

1

[

April

< 0.010

< 0.010

< 0.010 0

1 May.

< 0.010

< 0.010

< 0.010 0

1

' June 0.011 0.011 0.011 0

1 July

< 0.010

< 0.010

< 0.010 0

1 August

< 0.010

< 0.010

< 0.010 0

1 September

< 0.010

< 0.010

< 0.010 0

1 October

< 0.010

< 0.010

< 0.010 0

1 November

< 0.010

< 0.010

< 0.010 0

1 December

< 0.010

< 0.010

< 0.010 0

1 TD 0.011

- MAXIMUM YTD

< 0.010 MINIMUM YTD

< 0.010 AVERAGE YTD 0

12 TOTAL

  • "<" indicates less th5he detection hmit for measurement method.

TABLE 15 20 L

e

ANNUAL WASTE CHARACTERISTICS *

(Daily maximum release hmit 1.0 microg/l)

MERCUR.'

1 CONCENTRATION (microgA)

NO. OF GAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED January

< 0.2

< 0.2

< 0.20 0

1 February

< 0.2

< 0.2

< 0.20 0

1 March

< 0.2

< 0.2

< 0.20 0

1 April

< 0.2

< 0.2

< 0.20 0

1 May

< 0.2

< 0.2

< 0.20 0

1 June

< 0.2

< 0. 2

< 0.20 0

1 July

< 0.2

< 0.2

< 0.20 0

1 c 0.2

< 0.2

< 0.20 0

1 August

< 0.2

< 0.2

< 0.20 0

1 September i

October

< 0.2

< 0.2

< 0.20 0

1 November

< 0.2

< 0.2

< 0.20 0

1 December 0.09 0.09 0.09 0

1

'3 YTD 0.2 l

MAXIMUM YTD

< 0.00

]

MINIMUM J

YTD

< 0191 AVERAGE Y1D 0

12 TOTAL

  • "<" indicates less than the detection limit for measurement method.

TABLE 16 21

l ANNUAL WASTE CHARACTERISTICS *

(Daily maximum release limit 11 microg/l)

TOTAL CHROMlUM l

CONCENTRAT!ON (microg/I)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED January

<1

<1

< 1.00 0

1 1.00' O

1 February

<1

<1 March 1.1 1.1 1.10 0

1 April 1.2 1.2 1.20 0

1 May 1.4 1.4 1.40 0

1 June 3.6 3.6 3.60 0

1 July

<1

<1

< 1.00 0

1 August 1.6 1.6 1.60 0

1 September 1.9 1.9 1.90 0

1 2.1 2.1

'2.10 0

1 October November

<1

<1

< 1.00 0

1 December 3.9 3.9 3.90 0

1 TD 39 s

MAXIMUM YTD

< 1 1

MINIMUM YTD

< 1 733 AVERAGE YTD 0

12 TOTAL

  • "<" indicates less than the detection limit for measurement method.

TABLE 17 22 d

.O

ANNUAL WASTE CHARACTERIS'IICS*

(Daily maximum release limit 5.6 microg/l)

LEAD CONCENTRATION (microg/l)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED I

January

<2

<2

< 2.00 0

1 February

<2

<2

< 2.00 0

1 March

<2

<2

< 2.00 0

1 Apnl

<2

<2

< 2.00 0

1 May 2.2 2.2 2.20 0

1 June

<2

<2

< 2.00 0

1 July

<2

<2

< 2.00 0

1 August

<2

<2

< 2.00 0

1 September

<2

<2

< 2.00 0

1 I

October

<2

<2

< 2.00 0

1 Nosember 2.3 2.3 2.30 0

1 December i

1 0.98 0

i fD 2.3 MAXIMUM YTD

< 0.98 MINIMUM i

< 1.957 YTD

(

AVERAGE YTD 0

12 I

TOTAL L

  • *<" indicates less than the detection limit for measurement method.

TABLE 18 23

~

u

lI l

I ANNUAL WASTE CHARACTERISTICS' (Daily maximum release limit 58 microgh) l ZINC l

CONCENTRATION (mcrogn)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED January 110 110 110.

1 1

I February 32 32 32.0 0

1 March 50 50 50.0 0

1 fI April 51 51 51.0 0

1 f

May 47 47 47.0 0

1 June 43 43 43.0 0

1 July 44 44 44.0 0

1

,I August 49 49 49.0 0

1 j

f September 37 37 37.0 0

1 October 44 44 44.0 0

1 November 50 50 50.0 0

1 December 58 58 58.0 0

1 TD 110 I..

MAXtMUM YTD 32 I

MINIMUM YTD 51.25 AVERAGE 1

12 YTD TOTAL TABLE 19 I

24

-I

ANNUAL WASTE CHARACTERISTICS *

(Daily maximum release limit 2.3 microg/I) 4 SILVER CONOENTRATION (microgli)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED February

<1

<1

< 1.00 0

1 May

<1

<1

< 1.00 0

1 August

<1

<1

< 1.00 0

1 November

<1

<1

< 1.00 0

1 VTD

<1 MAXIMUM YTD

< 1 MIN! MUM

< 1.00 YTD AVERAGE YTD 0

4 TOTAL

  • "<" indicates less than the detection limit for measurement method.

TABLE 20 25 1

1

ANNUAL WASTE CHARACTERISTICS *

(Daily maximum release limit 7.1 microg!!)

i NICKEL CONCENTRATION (microgil)

NO. OF SAMPLES SHOWING TOTAL MONTH MAX MIN AVG VIOLATION ANALYZED January

<5

<5

< 5.00 0

i February

<5

<5

< 5.03 0

1

~

March

<5

<5

< 5.00 0

1 April

<5

<5

< 5.00 0

1 May

<5

<5

< 5.00 0

1 June

<5

<5

< 5.00 0

1 July

< 5.

<5

< 5.00 0

1 August

<5

<5

< 5.00 0

1 September

<5

<5

< 5.00 0

1 October

<5

<5

< 500 0

1

^

November

<5

<5

< 5.00 0

1 December 2.8 2.8 2.80 0

1 Yif^

5 MAX; MUM YTD

< 2.8 MINIMUM y

YTD

< 4 617 AVERAGE YTD 0

12 TOTAL

  • ' <" indicates less than the detecten limit for measurement method.

/

TABLE 21 26

WATER EFFLUENT NONRADIOLOGICAL CONSTITUENTS MONTHLY SAMPLES (3 MONTH MEDIAN >90%)

FISH TOXICITY

~

STICKLEBACK FATHEAD MINNOW SURVIVAL CONTROL 3-MONTH SURVIVAL CONTROL 3-MONTH TURBIDITY UNDlLUTED SURVIVAL MEDIAN UNDILUTED SURVlVAL MEDIAN MONTH (NTU)

(%)

(%)

(%)

(%)

(%)

(%)

JANUARY 0.54 75 100 85 95 100 95 FEBRUARY 1.5 80 100 80 90 100 95 MARCH 2.8 100 100 80 95 100 95 APRIL 0.45 90 100 90 95 90 95 MAY*

0.34 80 95 90 90 100 95 JUNE 0.52 95 100 59 90 90 90 JULY 0.6 100 100 95 80 90 90 AUGUST 0.73 95 100 95 100 100 90 SEPTEMBER" 0.6 100 100 100 92.5 97.5 92.5 j

OCTOBER 0.7 80 100 95 100 100 100 J

NOVEMBER 0.65 95 90 95 100 100 100 DECEMBER 0.74 BG 100 85 100 100 100 YTD AVERAGE 0.85 89.58 98.75 93.96 97.29 P

TABLE 22 f

  • Average of two stickleback samples. Sample on 5/1/96 had a survival of 70% and on 5/B/96 one of 90% for the 80% reported.

" Average of two fathead samples. Sample on 9/4/96 had a survival of 85% and on 9/26/96 one of 100% for the 92.5% reported.

j f

4 1

l 27

B.

STACK _ MONITORING Eight stacks at VNC required either regular or intermittent sampling during 1996. Data for each stack are given in Table 23A. The operating components arviced are given in Table 23B.

Each of these stacks is equipped with a sampling line that contains a paniculate filter for sampling particulate radioactivity. Selected sample lines are also equipped with charcoal cartridges for radioic, dine monitoring. Other sta:ks. are equipped with noble gas monitoring systems. Filters and cartridges are chaged weekly and analyzed for gross alpha, gross beta-gamma, and I 131. The noble gases are counted continuously, and a recording system provides a readout of the quantity released from each monitored stack.

Results of the VNC stack sampling program are presented in Figures 3 through 6.

Figures 3 and 4 present the emissions from the two major VNC stacks, Building 102 (Stack 4) and the Nuclear Test Reactor (Stack 16). Figure 5 is a composite of the remaining minor stacks. Figure 6 is a composite of all VNC stack discharges.

28 l'

TABLE 23A. STACK HEIGHT, SIZE AND FLOW RATE Nominal Stack Height Stack Size Flow Rate Namber Lmtion (ft. above rmf)

(inchei)

Mm) b C

4 Building 102A 75 66 dia.

39,000 8

b C

12 Building 103 48 60 dia.

28,000 16a Building 105 9

13.5 x 13.5 2,600 b

26 GETR 95 38 dia.

6,100 8

30 Waste Evaporator 7

13 x 17.75 3,200 34 Waste Storage 13 13 x 17.75 2.200 b

37 HSF Bunker 45 19 dia.

21,500

)

  • Major stack bFeet above ground level CAverage flow TABLE 23B. OPERATING COMPONENTS SERVICED f'

4 Stack No.

Remote Handling Operation, Isotope Productien Facility, Radiochemistry, 4

Remote Handling Operations Radioactive Storage Room 12 Metallurgy and Ceramics Laboratories, Chemistry Laboratories j

16 Nuclear Test Reactor 26 General Electric Test Reactor 30 Liquid Waste Evaporator 34 Waste Storage Facility 37 Bunker Area of Hillside Storage Facility l

l 29

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B. STACK MONITORING (Continued) Total airborne releases (stack emissions) for 1996 are as follows: Alpha Particulate: < 0.59 Ci (predominantly radon-thoron daughter productr,) Beta-Gamma Particulate: 61.3 pCi Iodine-131: 23.7 pCi 2 Noble Gases: 4.24 x 10 Ci Noble gas activities recorded from Stack 16 integrate background readings with the actual rhes, witich, in some cases, account for 40 to 50% of the activity released. Stack 4 data have been corrected for background. As with the water effluent data, these data above are derived by summing data obtained from measurement of short interval releases. Many of the measurements on these releases were found to be less than the detection limits of standard laboratory instrumentation. The data listed include the multiple summation of these detection limits and therefore represent the maximum releases possible from VNC during the calendar year. I 34 9

III. ENVIRONMENTAL SURVEILLANCE DATA A. SURVFTI T. ANCE FOR WATERBORNE RET F ASES 1. Receiving Waters A grab sample is obtained from the ditch along the southeast boundary of the site. This location is upstream from the retention basin outlet and at the point where natural drainage leaves the site. The sample point designation, location, and sampling schedule are listed below and are shown in Figures 7 and 8. Sample Point and Loc 2 tion Sampling Schedule C-4, drainage ditch crossing south boundary of site Monthly when running The CRWQCB compliance summary is shown in Table 24. Although measurement is required, there is no compliance limit for copper. A summary of nonradiological parameters is shown in Table 25. A summary of the radiological parameters is shown in Table 26. 35

2 8 R 8 0 s s e N3590 - -- - - - - - i ' M' o8 P -' / N3000 MONITORING r.* MONITORING ..gTATION p STATION BLDG 200 AREA

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TABLE 24. COMPLIANCE

SUMMARY

- RECEIVING WATERS (Tests failed versus tests performed.)

Dissolved Temperature pH Oxygen No alteration of No variation temperature from natural Minimum of beyondnatural ambient by more Month 7mg// luckgroundlevels than 0.5 units January 0/0 0/0 0/0 February 0/1 0/1 0/1 March 0/1 0/1 0/1 April 0/1 0/1 0/1 May 0/0 0/0 0/0 June 0/0 0/0 0/0 July 0/0 0/0 0/0 August 0/0 0/0 0/0 September-0/0 0/0 0/0 October 0/0 0/0 0/0 November 0/0 0/0 0/0 December 0/0 0/0 0/0 38

i TABLE r.',. RECEIVING WATERS ANALYSES DATE: 1/3/96 4/3/96 7/3/96 10/2/96 STATION: C-4 C4 C4 C4 TIME SAMPLED: Dry 0620 Dry Dry Temperature, *C 9 Dissolved 0, mg/l 10.0 2 Dissolved Oxygen, % Saturation 86.2 Dissolved Oxygen, % of Mean for Month 91.6 Total Dissolved Solids, mg/l 270 Turbidity, NTU 16 pH 8.1 Copper, mg/l < 0.01 Chloride, mg/l 34 DATE: 2/7/96 5/1/96 8/7/96 11/6/96 STATION: C-4 C-4 C-4 C-4 TIME SAMPLED: 0650 Dry Dry Dry Temperature, *C 11' Dissolved O,, mg/l 9.5[ Dissolved Oxygen, % Saturation 85.5 l Dissolved Oxygen, % of Mecn for Month 74.2 Total Dissolved Solids, mg/l 290 Turbidity, NTU 11 pH 8.0 Copper, mg/l < 0.01 Chloride, mg/l 28 DATE: 3/6/96 6/6/96 9/4/96 12/4/96 STATION: C-4 C-4 C-4 C-4 TIME SAMPLED: 0830 Dry Dry Dry Temperature, 'C 9 Disselyed 0, mg/l 10.6 2 DissoNed Oxygen, % Saturation 91.4 Dissolved Oxygen, % of Mean for Month 103 4 Total Dissolved Solids, mg/l 260 Turbidity, NTU 2.2 pH 8.1 Copper, mg/l <5 Chloride, mg/l 26 ' <

  • indicates less than the detection limit for the measurement method.

39

.~.- TABLE 26. RECEIVING WATERS ANALYSES Smiple Station C-4 Radioactivity (pCi/l)* Month a Fy January Dry Dry February 0.70 4.00 March 1.54 3.16 April 1.69 5.30 May Dry Dry June Dry Dry July Dry Dry August Dry Dry September {,, Dry Dry October Dry Dry i November Dry Dry December Dry Dry i Annual Average 0.33 1.04

  • See Section I.C.3.

I l 4 l l 40 l

.j A. SURVFTI 1 ANCE FOR WATERBORNE RFI F ASES (Continued) 2. Grounel Waters .j Ground water is monitored by obtaining quanerly samples from four wells on or near the site. Sample point designations and locations are listed below and shown in Figures 7 and 8. G-2N1 Well southeast of Building 105. California State Well No. 4S/1E-2N1 (formerly G 1). G-10A1 Well south-southwest of Building 102. California State Well J No. 4S/1E-10A1. \\ 1 G-10H i Well on private property south of site entrance. California State Well No. 4S/1E 10H1 (formerly G-4). G-10P3 Well on private property 0.6 miles southwest of site entrance. California State Well No. 4S/1E-10P'. Sample data are summarized in Table 27. ) i e 41

I i TABLE 27. GROUND WATER SAMPLE STATIONS l G-2N L G-10A1 G-10H1 G10P3 Radioactivity Radioactivity Radioactivity Radioactivity (pCi/l)* (pCi/l)* (pCi/:)* (pCi/l)* No. of Samples a p.y a a D-y H-3 a p.y per p-y Station February 1 t 5.6 72.2*

  • 331 1.1 267**

1.9 79.8** May I t 2.6 56A** 180 0 273.8** 1.7 353.4** August I t 15.6 83.1*

  • 1,280 3.02 4.36 9.52 30.9

a I 1 4.51 6.10 2.09 6.57 403 2.04 1.26 1.07 10.7 November Annual Average 4 1.13 1.53 6.47 54.6** 549 1.54 137'* 3.55 119** i

  • See Section I.C.3.
    • Major contributor is K-40.

tWell not operational at this time. 9

i i A. SURVEIT T ANCE FOR WATERBORNE RFT F ASFS (Continued) 3. Stream Bottom Sadiments Stream bottom sediment sample locations are listed in Table 28A. The sample locations are the same as for receiving water shown in Figures 7 and 8. Data are shown in Table 28B. TABLE 28A STREAM BOTTO.M SEDLMENTS DESCRIPTION AND SAMPLE SCHEDULE Sample Number Location Freauency Gross R2d. Co-60 Cs-137 j S-4 Outfall of retention Annually x x x basins at south boundary of site TABLE 28B. BOTTOM SEDIMENTS Contract Service Data (All Results in pCi/g) Sample Gross Gross Date Station Alpha Beta-Gamma Cs-137 Co-60 KdQ 5/1/96 5-4 1.60 11.4 0 0 1.7 43

j B. SURVIDII ANCE FOR AIRBORNE RFT F ARFC 1. Environmental Air h=nles Environmental air monitoing stations are positioned approvim*-ly 90' apan around the operating facilkies of the site (see Figure 9). Each station is equipped with a membrane filter. Filters are analyzed for gross alpha and gross beta-gamma. [ Results are graphed in Figure 10. i 2. Cloud G=mm Mnnitors There are 31 stations on site for measuring cloud-gamma radiation. These are located in sixteen 22.5' sectors surrounding the facilities. Each station consists of a thermoluminescent dosimeter (LiF or CaSo4:Dy) sealed in a plastic. coated . aluminum foil package which is placed in a protective brown paper covering. These dosimeters are changed once annually (Station 4, quanerly). Station locations are shown in Figure 9. South boundary stations are numbers 1,2,3,8,9, 31; East boundary stations are numbers 10,11,12,13,14,15; North boundary stations are numbers 16,17,18,19,23,24; and West boundary stations are numbers 25,26,27,28,29, and 30. TABLE 29. CLOUD GAMMA MONITORS * (mrem /yr) South East Nonh West [ Boundary Bound = rv Bound =rv Bound =rv 1.7 16 21.7 13.4

  • Boundary cloud-gamma monitor data are reported as mean values.

The reponed values have had a background of 66 mrem subtracted from the gross results. The background is determined by the dosimeter vendor / processor from a dosimeter which has been exposed to background radiation only at their facility and is from the same batch of TLD material as the dosimeters exposed at VNC. It is assumed that the background at the processor's facility is repreuntative of that generally in the Bay Area. Using the EPA Comply Code, Version 1.4, the maximum radiation levels at the se boundaries due to gaseous effluents were calculated on February 19,1997, to be: Effective dose equivalent: 0.3 mrem /yr Effeedve dose equivalent: 1.3 x 10-3 mrem /yr due to iodine As these numbers are less than the EPA reponing limits (1 mrem /yr and 3 mrem /yr respectively), VNC is exempt from reponing. 44

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l I SURVFTii ANCEFOR AIRBORNE RFIFASES (Continued) B. i 3. Vwerstion The description and schedule of vegetation samyles are summarized in Table 30A. i' l See Figure 11 for map locations. All sample points are sampled annually. These results are shown in Table 30B. L TABLE 30A, DESCRIPTION OF VEGETATION SAMPLES 12vstion Samnie Number V2 Easternmost stream crossing south boundary of site VAL-1V West of site boundary,500 ft. down road ) I l 1 TABLE 30B ANNUAL VEGETATION SAMPLE ANALYTICAL RESULTS ' (pCi/ gram)* Sample Gross Gross l Number Alpha Beta-Gamma Cs-137 Co-60 EdQ V-2 0.18 48.0 0 0 15 VAL-IV O 14.3 0 0 6.6 i (4/4/96) l l L 'See Section I.C.3. i 47

N t. 5 l VALLECITOS NUCLEAR CENTER & VEGETATION SAMPLE LOCATION l d 4 4 4 i acm m mm wwoi 1 Y= savec _);,.m-T - a= 100 gp at,_ uz 7 l = sw 1 98M a g E g-A w -iv V-2 m munmaamo FIGURE 11. VEGETATION SAMPLE LOCATIONS wW sesoact.s o 48 L----.

l j l' l' I Io l IV. METEOROLOGY i Rainfall to date and for the past five (5) years is as follows: l Dats . Time Period Inches . 1991-1992 July to July 14.05 1992-1993 July to July 19.60 1993-1994 July to July 13.55 1994-1995 July to July 23.10 f 1995-1996 July to July 18.10 1996 1997 July to Jan. D.80 l l [ l l l l l l ). J O 49

l INTERNAL DISTRIBUTION MlC C. W. Bassett V18 Senior Licensing Engineer Vis T. D. En5 sh 902 1i A. F. Mindt (10), Vis Library-San Jose (2) 728 d 3 i

4 i ^ EXTERNAL DISTRIBUTION l Qust Alameda County Health Care Agency 1 American Nuclear Insurers 1 California Department of Health Services 1 California Regional Water Quality Control Board 1 GE-Regulatory Operations Unit (Rockville, MD) 1 Lawrence Livermore National Laboratory i Nuclear Regulatory Commission; Washington, D.C. 4 Nuclear Regulatory Commission, Region IV 1 Nuclear Regulatory Commission, WCFO 1 l i ,}}

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