ML20057D465

(Vnc) Effluent Monitoring and Environmental Surveillance Programs 2019 Annual Report

ML20057D465
Person / Time
Site:	07000754
Issue date:	02/26/2020
From:	Smyly J GE Hitachi Nuclear Energy
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
M200028
Download: ML20057D465 (33)

Text

HITACHI M200028 February 26, 2020 Chief, Fuel Facility Licensing Branch Division of Fuel Management Office of Nuclear Material Safety and Safeguards us Nuclear Regulatory Commission Washington; DC 20555-0001 Attn: Document Control Desk GE Hitachi Nuclear Energy Jeffrey Smyly Regulatory Compliance Manager 6705 Yalledtos Road Sunol, CA 94511&

USA T925-9181074 Jeffrey.Smyly@ge.cam

Subject:

Vallecitos Nuclear Center (VNC} Effluent Monitoring and Environmental Surveillance Programs 2019 Annual Report

References:

1) NRC License SNM 960, Docket 70-754 Enclosed Is the 2019 Effluent Monitoring and Environmental Surveillance Programs Annual Report for the Vallecitos Nuclear Center (VNC) In Sunol, California.

If you have questions regarding this report or need additional information, please contact me using the contact information above.

Sincerely, Jeffrey Smyly Regulatory Compliance Manager

Attachment:

Effluent Monitoring and Environmental Surveillance Programs, 2019 Annual Report JS20-002

USNRC M200028 February 26, 2020 cc: 1) Leonard Ash, (ACWD), leonard.ash@acwd.com

2) Matthew Soby (ACDEH), Matthew.Soby@acgov.org

3) Radioactive Materials Licensing Section California Department of Public Health Radiologic Health Branch 1500 Capitol Avenue, Suite 520, MS 7610 Sacramento, CA 95814-5006 Attn: Ira Schneider Page 2 of2

4) Colleen Winey {Zone 7 Water Agency), cwiney@zone7water.com

5) American Nuclear Insurers 95 Glastonbury Boulevard, Suite 300 Glastonbury, CT 06033 Attn: Otto Walter Attn: Seth Breitmaier

6) USNRC, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Attn: Regional Administrator

7) Osiris Slurano-Perez Project Manager Fuel Facility Licensing Branch Division of Fuel Management US Nuclear Regulatory Commission Mail Stop: TWFN 4A60 Washington, DC 20555-0001

HITACHI GE Hitachi Nuclear Energy, LLC EFFLUENT MONITORING AND ENVIRONMENTAL SURVEILLANCE PROGRAMS ANNUAL REPORT 2019 (Revision 0)

February 26, 2020

M200028 US NRC 2/26/2020 NOTICE AND DISCLAIMER The GE-Hitachi Nuclear Energy, LLC (GEH) prepared this document GEH and contributors to this document do not:

make any warranty or representation, expressed or implied, that the use of any information disclosed may not infringe privately owned rights; or assume responsibility for liability or damage of any kind, which may result from the use of any information disclosed.

M200028 US NRC 2/26/2020 TABLE OF CONTENTS TABLE OF CONTENTS................................................................................................................................................................................... ii LIST OF FIGURES AND TABLES............................................................................................................................................................... iii ABSTRACT......................................................................................................................................................................................................... iv

1.0 INTRODUCTION

....................................................................................................................................................................................... 1 1.1 1.2 Effluent Monitoring Program Environmental Surveillance Program 1

2 2.0 EFFLUENT MONITORING DATA....................................................................................................................................................... 4 Effluent Data 4

3.0 ENVIRONMENTAL SURVEILLANCE DATA................................................................................................................................... 5 3.1 3.2 3.3 3.4 3.5 3.6 Groundwater Stream Bottom Sediments Vegetation Gamma Monitoring Ambient Air Monitoring Gaseous Effluent Monitoring 5

5 5

5 5

5

4.0 REFERENCES

............................................................................................................................................................................................. 6 4.1 4.2 4.3 United States Nuclear Regulatory Commission (USNRC) License SNM-960 United States Nuclear Regulatory Commission (USNRC) License R-33 State of California Radiologic Health Branch License 0017-01 6

6 6

5.0 DEVIATIONS............................................................................................................................................................................................... 7 5.1 5.2 Air Sample Data output from the Alpha/Beta Tennelec System Lost Environmental Dosimetry Badges 7

7 6.0

SUMMARY

................................................................................................................................................................................................... 8 ii

M200028 US NRC 2/26/2020 LIST OF FIGURES AND TABLES Figure No.

1 Topographic Map OfVNC 2 Sanitary and Industrial Discharge Treatment Facility 3 Water Sampling Locations 4

Air Sampling Locations and Gamma Monitoring Points 5 Analytical Results, Air Samples 6 Analytical Results, Stack Monitoring (Stack 4, Bldg. 102) 7 Analytical Results, Stack Monitoring (Stack 16, NTR) 8 Analytical Results, Stack Monitoring Composite (All Except Stacks 4 And 16)

Table No.

1 Sample Collection Schedule 2

Groundwater Well Information 3 Stack Specifications 4

Radiological Effluent Samples 5

Ground Water Samples 6

Stream Bottom Sediment Samples 7 Vegetation Samples 8

Dosimetry Results - Gamma Monitoring 9 Ambient Air Monitoring 10 Tennelec Efficiency iii

M200028 US NRC 2/26/2020 ABSTRACT Annual, 2019 This report presents the data collected for the calendar year of 2019. The original copies oflaboratory reports are on file atVNC.

Treated sanitary and industrial wastewater was disposed of on-site by an irrigation system. No surface runoff of sanitary or industrial wastes was observed during the report period.

Based on the analytical results of radiological samples collected from locations on-and off-site during the reporting period, VNC is in compliance with licenses issued by the U.S. Nuclear Regulatory Commission and California Department of Health, Radiologic Health Branch.

iv

M200028 US NRC 2/26/2020

1.0 INTRODUCTION

This report summarizes activities performed and data collected for the Effluent Monitoring and Environmental Surveillance Programs at Vallecitos Nuclear Center (VNC). Section 1.0 presents background information. Data collected during the reporting period is presented in Section 2.0 through 4.0. This report has been prepared to demonstrate compliance with state and federal requirements.

The VNC site is several hundred acres in size. It is located on the northern side of Vallecitos Valley as shown in Figure 1, a topographic map ofVNC and the surrounding area. Most of the site is undeveloped with hills ranging in elevation from approximately 1,000 to 1,300 feet above mean sea level. Approximately 135 acres in the southwest comer and situated between the 400 and 600 foot topographic contours are developed. The ground surface of this portion of the site slopes to the southwest VNC utilizes three drainage systems: industrial, sanitary, and storm. The industrial and sanitary systems discharge non-rad effluent into one of four 50,000-gallon retention basins located in the southwest comer of the site (Figure 2). The storm drainage system, essentially natural ditches, discharges storm water into a ditch parallel with Vallecitos Road (State Route 84). Storm drains from Buildings 103, 104, and 106 discharge to the west drainage ditch, while some storm drains in the Building 102, 105, 200, and 300 areas discharge to the east drainage ditch. As shown in Figures 2 and 3, these ditches merge prior to exiting the southwest comer of the site.

Groundwater levels of the developed site vary from 2 to 3 feet below ground surface (during winter near Retention Basins 2 and 3) to 30 to 40 feet (during the summer northwest of the road leading to the water tank). A USGS geology study shows that groundwater generally flows toward the southwest The velocity of groundwater is estimated by USGS to be about 0.01 ft/day in clays to 8ft/day in gravels. In areas where gravels with a considerable mixture of clay (most of developed site) are saturated close to the land surface, southwesterly movement occurs at an average rate of approximately 2 ft/day1*

1.1 Effluent Monitoring Program The purpose of the Effluent Monitoring Program is to ensure that VNC site release limits for effluent are not exceeded. The Program includes measuring radioactive constituents in water discharged through the site sanitary and industrial wastewater systems. Measurements are determined by collecting samples of effluent The schedule of sample collection is presented in Table 1.

The United States Nuclear Regulatory Commission (NRC) have established radiological release limits. These limits are listed in 10CFR20, Appendix B.

Effluent Characteristics Effluent discharge from VNC is made up of industrial wastewater and clean water. Discharges of industrial wastewater consist primarily of non-contact cooling water. The discharges are either held in one of three available 50,000-gallon retention basins and or used for non-potable purposes, such as landscape watering.

After July 1st, 2003 no discharges to surface waters have been made from these sources. Samples are collected from each basin prior to discharge to on site irrigation. In addition, samples from all basin discharges are accumulated and analyzed at specified intervals for a variety of constituents.

Discharges of clean water consist of storm water runoff and small quantities of water known to contain no contaminants. These waters flow directly to drainage ditches that enter Vallecitos Creek Sanitary Waste Handling Sanitary waste (sludge) is collected in an Imhoff tank before undergoing sand filtration and chlorination (by addition of sodium hypochlorite solution). Samples of sanitary waste (sludge) are collected before each Imhoff Tank clean-out There were no clean-outs performed on the Imhoff tank during 2019. Processed 1 A delay of over 2 years from the nearest postulated spill point to the site boundary.

1

M200028 US NRC 2/26/2020 sanitary waste water is sprayed onto VNC property by an irrigation system in a designated area (Figure 2).

The procedure is monitored so that no surface runoff occurs.

Gaseous Effluent Monitoring Several operations at the site utilize exhaust stacks. Air is collected from single or multiple operating areas via a ventilation system. The ventilation system is generally comprised of ductwork, particulate filtration systems, blowers, and an exhaust stack. The gaseous effluent is monitored. The specifications of each stack are listed in Table 3.

The various site operating licenses (SNM-960, R-33, and State 0017-01) and federal regulations require that the gaseous effluents released to unrestricted areas be limited and controlled to maintain the concentrations of radioactive material in the unrestricted area as low as reasonably achievable but at least no greater than the values in Appendix B, Table II of 10CFR20.

The method by which releases are determined to be within these limits is to establish average release limits and control values for each stack and then measure the average releases through monitoring and/or sampling of the effluents. The control values are, in general, established as 10% of the license release limits.

Both sampling and monitoring techniques are used to determine gaseous effluent releases. Release results reported to regulatory agencies for particulates and halogens are obtained from sampling systems. Noble gas results are obtained from charts or electronic integrators on monitoring equipment The COMPLY computer code is run to determine the dose at the site boundary from annual airborne effluents.

This evaluation was formerly required when 40CFR61 Subpart I applied to NRC licensees, which included VNC. The regulation was amended to exclude NRC licensees. However, VNC has continued to run the COMPLY code to demonstrate compliance with the constraint rule per Regulatory Guide 4.20 and 10CFR20.1101d. Verifying compliance with annual public dose per 10CFR20.1301, "Dose Limits for Individual Members of the Public".

1.2 Environmental Surveillance Program The purpose of the Environmental Surveillance Program is to determine if discharges from VNC are detectable in the environment The Program includes measuring radioactive constituents in neighboring streams, wells, and soils at locations near or beyond the site perimeter. Samples of groundwater, stream bottom sediments, and vegetation are collected. The schedule of sample collection is presented in Table 1.

Groundwater MonitorinK Groundwater is monitored by collecting and analyzing samples from eighteen wells located on or near VNC.

Samples are analyzed for radiological contaminants. Well identification numbers, corresponding California State Well Numbers, and descriptions oflocations are listed in Table 2. Wells installed in the early 1970s in and around Building 102 are checked on a quarterly basis for water. Some of these wells have been dry for several years and sampling is not possible. When samples are collected from these sources, they are sent to the lab for analysis.

Vegetation MonitorinK Vegetation is monitored by collecting and analyzing samples of vegetation at two locations designated V-2 and Vai-IV.

Station V-2 VAL-IV Description Easternmost stream crossing south boundary of site West of site boundary, 500 feet down Little Valley Road 2

M200028 US NRC 2/26/2020 Stream Bottom Sediment Monitoring Stream bottom sediment is monitored by collecting and analyzing samples at one location designated as S-4.

The location is at the outfall of the retention basins at south boundary of site.

Air Monitoring There are four air monitoring stations, designated as A-1 through A-4, across the site. The stations are positioned approximately 90° apart around the operating facilities of the site. The locations of the stations are shown in Figure 4.

To collect samples, each station is equipped with a membrane filter and an activated charcoal cartridge. The filter is changed weekly2 and counted for gross alpha and gross beta radiation. The cartridge is removed and analyzed only in the event of a suspected radioactive iodine release.

Gamma Monitoring There are 20 monitoring stations on site for measuring gamma radiation in the environment Each station is constructed of a steel mailbox and equipped with a dosimeter. The dosimeter is sealed in plastic. The dosimeters are exchanged annually. The locations of the stations are shown in Figure 4.

For reporting purposes, the dosimeters are distributed as follows:

South Boundary -

Stations 1, 2, 3 East Boundary -

Stations 4,5,6 North Boundary-Stations 7,12,13 West Boundary-Stations 8,9,10,11 Background Dosimeters-Stations 14,15,16,17,18,19,20 The dosimeter vendor reports the measurements of each dosimeter and determines the background measurement Background is determined by using a dosimeter that has been exposed to background radiation at this facility and is from the same batch of OSL material as the dosimeters exposed at VNC.

1.3 Laboratory Analyses On-site and external laboratories perform the analyses of samples collected at VNC as required for the programs. Samples analyzed by the on-site laboratory are reported as measured value or less than minimum detectable activity (MDA) values, while samples analyzed by the external laboratories are reported as actual measured values. Values within the statistical background may be listed as zero or as a positive or negative numbers. All analyses are performed using approved USEPA methodology with minimum sensitivities equal to or less than permit limits. All records of analytical results are maintained at VNC.

On-site Laboratory Analyses The following list of analyses are performed by the on-site laboratory:

Total Alpha-Emitting Radioactivity Total Beta-Emitting Radioactivity Off-site Laboratory Analyses The external laboratories that have been contracted to analyze samples collected for the program are GEL, located in Charleston, South Carolina, performs radiological analyses on samples of water and Davi Lab. Davi Lab, located in Hercules, California, performs radiological analyses on samples of water, stream bottom and vegetation.

2 During dusty conditions, the filters are changed as determined by the RMT, Facilities Protection.

3

M200028 US NRC 2/26/2020 2.0 EFFLUENT MONITORING DATA This section presents the discharge information and analytical results for samples collected for the Effluent Monitoring Program during the reporting period.

EffiuentData Compliance Summary Required samples collected during the reporting period and the analytical results of tests are in compliance with Permit limits. Treated sanitary and industrial wastewater was disposed of on-site by an irrigation system. No surface runoff of sanitary or industrial waste occurred during the report period.

Based on the analytical results of radiological samples collected from locations on and off-site during the reporting period, VNC is in compliance with all licenses issued by the U.S. Nuclear Regulatory Commission and California Department of Health, Radiologic Health Branch.

Non-radioloW,cal Analytical Results Summaries of data relating to non-radioactive effluent parameters are given in Table 5 through 9. The results indicate that all constituents of concern are in compliance with regulatory limits.

Table 4 Sample Analysis Results of sampling of industrial effluent waters for radiological contaminates prior to release from the property is summarized in Table 4. The VNC has no radiological liquid effluent pathways and sampling for radiological contamination in industrial effluent is not required by the State of California. The provided monthly specific activities are summed totals from samples taken of daily water releases. Entries of zero (0) indicate results below the detection limits oflaboratory instruments. No radiation was detected that exceeded regulatory limits.

4

M200028 US NRC 2/26/2020 3.0 ENVIRONMENTAL SURVEILLANCE DATA This section presents the analytical results for samples of ground water, stream bottom sediments, and vegetation collected for the Environmental Surveillance Program during the reporting period.

3.1 Groundwater Analytical results of groundwater samples collected from the wells as indicated in Table 2 during the reporting period are listed in Table 5.

3.2 Stream Bottom Sediments Analytical results of stream bottom sediment samples collected during the reporting period are listed in Table 6.

3.3 Vegetation Analytical results of vegetation samples collected during the reporting period are listed in Table 7.

3.4 Gamma Monitoring The results of gamma monitoring during the reporting period are listed in Table 8.

3.5 Ambient Air Monitoring Analytical results of environmental air samples collected during the reporting period are graphically presented in Figure 5, data in Table 9.

3.6 Gaseous Effluent Monitoring Stack MonitorinK Analytical results of gaseous effluent samples collected for stack monitoring during the reporting period are graphically presented in Figures 6 through 8.

Effective Dose Equivalent The calculated Effective Dose Equivalent at Screening Level 2 resulting from the annual measured releases, as calculated by the Comply Code, are:

Property Line 0.6 mRemjyear due to all emissions, and 4.8E-05 mRemfyear from iodine.

Site Developed Area 4.0 mRemjyear due to all emissions, and 3.2E-04 mRemjyear from iodine.

5

M200028 US NRC 2/26/2020

4.0 REFERENCES

This section has the references that are required to be met by this Environmental Monitoring Report Licenses 4.1 United States Nuclear Regulatory Commission (USNRC) License SNM-960 4.2 United States Nuclear Regulatory Commission (USNRC) License R-33 4.3 State of California Radiologic Health Branch License 0017-01 6

M200028 US NRC 2/26/2020 5.0 DEVIATIONS This section presents anomalies, deficiencies or deviation in adherence to the Effluent Monitoring and Environmental Surveillance Programs at VNC for the reporting period.

5.1 Air Sample Data output from the Alpha/Beta Tennelec System Y2Kscan does not receive efficiency data from the Tennelec, so it uses an assumed efficiency which is higher than the actual efficiency. It was identified the assumed efficiency was utilized for data calculations for previous year submittals. Data was evaluated using the actual efficiency, the corrected data for the affected years is available in Table 10. Updated results did not exceed any screening levels. CR # 30895 was initiated to document finding.

5.2 Lost Environmental Dosimetry Badges During the annual collection of the environmental dosimetry badges, badge 17 was not found. CR# 33487 was initiated.

7

M200028 US NRC 2/26/2020 6.0

SUMMARY

This section presents a summary of the results of the water Monitoring Program for the reporting period.

The analytical results of radiological samples collected during the reporting period indicate that effluent discharges from VNC were in compliance with Water Permit limits and airborne releases were in compliance with licenses issued by the U.S. Nuclear Regulatory Commission.

Additionally, neither surface runoff of processed sanitary wastewater, nor industrial wastewater was observed. The Effluent Monitoring and Environmental Surveillance Programs continue to be effective.

8

1 Mile Scale 1 :24,000 Figure 1 Topograghic Map of GE Vallecitos Nuclear Center Countour lnterval10' based on USGS Maps, Lacosta Valley and Livermore, CA

M200028 US NRC 2126/2020

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M200028 US NRC 2/26/2020 VALLECITOS ROAD (HWY 84)

Gamma Monitoring Points 1-20 Air Sampling Stations Al-A4 FIGURE 4 VALLECITOS NUCLEAR CENTER ENVIRONMENTAL DOSIMETER LOCATIONS

M200028 US NRC 2/26/2020

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M200028 US NRC 2/26/2020 J.LCi 102AALPHA 102A BETA-GAMMA J.LCi o.oso r -------------------

0.050 2.55 0.040 2.05 0.030 0.030 0.020 1.55 1.05 I 1'.02 1.31 0.010 0.55 0.000 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC I

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Limit= 360 J.LCuries I Week (1,440 J.LCuries I Month)

Figure 6. Analytical Results, Stack monitoring (Stack 4, Bldg. 102)

M200028 US NRC 2/26/2020 J.1Ci 105ALPHA 0010~-------------------------------------------------------------------------,

0,008 0,006 0.004 0000 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Limit= 8.6 J.1Ci I Week (34.4 J.1Ci I Month)

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J.1Ci 105 BETA-GAMMA 0,20 0.18 0.16 0.14 0.12 0,10 0.08 I o.08 0.08 0.()6

• 0,04 004 0.02 0,00 JAN FEB MAR APR MAY JUN JUL AUG OCT NOV DEC Limit= 860 J.1Curies I Week (3,440 J.1Curies I Month)

CURIES 105 NOBLE GAS 40.00 3500 30,00 25.00 20.00 17:81 15.00

,, 10.41 10.'77 11.34 11.12 10.00 5.00 0.00 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Limit= 18 Curies I Week (72 Curies I Month)

Figure 7. Analytical results, Stack Monitoring {Stack 16, NTR)

M200028 US NRC 2/26/2020 0.01 0.00 OTHER ALPHA f.lCi OTHER BETA-GAMMA 1.40 1.20 1.00 0.80 0.87 0.02 0.02 0.60

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Limit= 1,080 f.1Curies I Week (4,320 f.1Curies I Month)

Figure B. Analytical Results, Stack Monitoring Composite (All except Stacks 4 and 16)

M200028 US NRC 2/26/2020 Designation Location E-001 and E-002 (Basin 1-4)

Station E-003 (Storm Water)

S-4 Stream Bottom (Sediments)

V-2 &VAL IV (Vegetation)

Groundwater Wells TABLE 1. SAMPLE COLLECTION SCHEDULE Constituent Sample Type Frequency Gross Alpha Grab Each discharge Gross Beta Grab Each discharge Gross Alpha Composite Monthly Gross Beta Composite Monthly Gross Alpha Grab Twice each half of reporting year Gross Beta Grab Twice each half of reporting year Gross Alpha Grab Annually, usually First week in May Gross Beta Grab Annually, usually First week in May Co-60, Cs-137 Gross Alpha Grab Annually, usually First week in April Gross Beta Grab Annually, usually First week in April Gross Alpha Grab Quarterly Gross Beta Grab Quarterly Tritium Grab Quarterly

M200028 US NRC 2/26/2020 Site Well No.

GN GA GP MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8 MW-9S MW-9D 102A 102E 102G 102K B-2 TABLE 2-GROUNDWATER WELL INFORMATION California State Well No.

Location Description 4S/1E-2N1 Southeast of Building 105 4S/1E-10A1 Southwest of Building 102 0.6 miles southwest of site entrance on 4S/1E-10P3 private property 4S/1E3R2 Bldg. 102 Parking Lot 4S/1E-10A2 North Side of Sanitary Discharge Field 4S/1E-10A3 West side of Sanitary Discharge Field 4S/1E-10A4 South Side of Sanitary Discharge Field 4S/1E-10H2 West side of Industrial Discharge Field 4S/1E-10H3 South side of Industrial Discharge Field 4S/1E-10G3 Southwest from Basins 4S/1E2M01 Southwest of GETR Reactor 4S/1E2P1 Southwest of EVESR and VBWR Reactors 4S/1E2P2 Southwest of EVESR and VBWR Reactors N/A Bldg. 102 Pool Area N/A Bldg. 102 A by the Stairs N/A Bldg. 102 Equipment Storage Area N/A Bldg. 102 Yard (Cask Storage Area)

N/A located at the GETR Yard

M200028 US NRC 2/26/2020 TABLE 3-STACK SPECIFICATIONS Flow Stack Height Diameter Rate Number Location Com~onents Serviced (feetags)

(inches)

(cfm) 4 Bldg.102A Remote Handling Operation, 75 66 Isotope Production Facility, 35,275.7 Radiochemistry, Remote Handling Operations Radioactive Materials Storage Room 12 Bldg. 103 Metallurgy and Ceramics 48 60 31,162.6 Laboratories, Chemistry Laboratories 16 Bldg. 105 Nuclear Test Reactor 45 13.5x13.5 1,484.7 26 Area 200 General Electric Test Reactor 29 19 5,353.1 (GETR) 30 Waste Liquid Waste Evaporator 25 13x17.75 3,365.8 EvaQorator 34 Waste Waste Storage Facility 25 13x17.75 NA Storage (Sandblast Room) 37 HSF Bunker Bunker Area of Hillside 40 35 NA Storage Facility Notes:

ags - above ground surface cfm - cubic feet per minute Stacks 34, and 37 did not operate during 2019.

M200028 US NRC 2/26/2020 TABLE 4-MONTHLY EFFLUENT SAMPLES, E-002-L Action Levels Gross Alpha (3.0xlO*B !!Cifcc = 30 pCifl) Gross Beta (S.Oxlo-s j.lCifcc =50 pCi/1)

Contract Service Data Contract Service Data

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Monthl~ Effluent (Sanita~)

Composite Sample (pCi/L)

Composite Sample (pCi/L) 13-y Tritium 13-y I

Tritium Month

a.

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I January 3.23 1.02 307 3.58 1.04 92 February 4.25 2.64 368 3.17 0.84 38 March 2.88 3.18 23 3.29 3.28 69 April 2.14 2.48 62 3.27 2.26 96 May 6.22 1.55 80 2.64 3.85 0

June 3.11 1.89 196 6.93 1.98 357 July 3.35 1.87 57 No Discharges August 2.17 2.73 350 5.00 2.16 515 September 3.31 1.67 150 No Discharges October 4.61 2.67 0

4.14 1.02 728 November 2.10 5.53 528 1.28 2.18 675 December 3.87 5.20 504 4.40 4.08 313 Footnotes for Table 4:

[1]

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n o DJO 2110 1110 1-11-'1 -

TIIIItml

M200028 US NRC 2/26/2020 TABLE 5 -QUARTERLY GROUND WATER SAMPLES Action Levels Gross Alpha (3.0x10*8 1J.Ci/cc = 30 pCi/1) Gross Beta (S.Ox10-8 1J.Cifcc =50 pCi/1)

--*-*--**-*****----- --- --- __ 4_S.O.~:WJ LG}!l -- ---- ____

4~J!E: !Q~ 1 _(QA_L _____ __ _ _ _ _ __ ~-S/j_E_-]Qlli..GP _

---**- -*--*---------- - _________ _(pCif!-)__ _______ _ _______ (P..9!!!-L__ _ ____ ___________ ___(p~i/_h)_ ---- --

Month Gross Aloha Gross Beta Tritilm Gross Aloha Gross Beta TritiiDll Gross Al_ll_ha Gross Beta TritiiDll Januarv'19 3.68 3.97 455 5.21 4.36 0

4.47 3.71 85 Aoril'19 7.46 0.74 57 3.12 1.94 195 3.16 1.97 125 July'l9 4.98 1.44 689 2.76 3.11 796 1.81 1.81 291 October'19 3.13 0.89 411 1.55 1.26 517 0.57 0.14 341 Annual Average 4.81 1.76 403 3.16 2.67 377 2.50 1.91 211 Ground water Activities 10 900 9

800

8 700 u.s 7 600 II E 6 E

500 II 5

'~>>

400

! 4 Ill 3 300 a

z:.

200 ca. 2 cc 1

100 0

0 January'19 April'19 July'19 October'19 GNGtossAIIf!a GNG-oalleta c:t.GrCESAipta GAGIIE!Brda GPCnmAiplla GPGnmseta

--G.\\TrDrm

--GNll11lrm

--GPTrUrll 102 Wells Building 102 Pool Area (102A)

Bldg. I 02A Stairs ( 102E)

Bldg. I 02 Equipment Storage Area (I 02G)

Bldg. 102 Cask Storage Area (102K)

• • • • • • --*----. --- - ___ (p_91f,) -- --- -- _____ J pc;_ii! L

-*- (pCi/L) __ ---

__ ----- ____ (pCi!L) ______

Month Gross Aloha Gross Beta Tritium Gross Aloha Gross Beta Tritium Gross Aloha Gross Beta.

Tritium Gross Aloha Gross Beta Tritium Januar}"l9 5.82 10.13 0.00 2.89 4.19 27 NoWall:r No Water 1Aoril'l9 6.00 5.04 99 4 30 0.77 154 3.43 2.15 172 2.90 3.13 196 Jul_y'J9 5.88 6.86 570 1.46 0.67 93 No Water 4.42 1.76 0.00 October'l9 2.37 2.38 458 No Water No Water No Water Annual Averal!e 5.02 I

6.10 I

282 2.88 I

1.88 I

91 3.43 I

2.15 I

172 3.66 I

2.45 I

98

M200028 US NRC 2/26/2020 Annual Average 5.54 6.16 7.83 7.05 1\\1 \\\\'-I (I E-JIC) 1.74 1.47 0.23 2.04 TABLE 5-CONTINUED-QUARTERLY GROUND WATER SAMPLES Action Levels Gross Alpha (3.0x10*8 !!Cifcc = 30 pCi/1) Gross Beta (S.Oxl0-8 !!Cifcc =50 pCi/1)

Tnt1um TntiUm TntiUm TntiUm 209 252 209 348 0

3.08 230 207 2.17 310 26 3.02 1.23 146 2.89 66 6.00 252 411 1.54 0.71 387 0.00 458 4.55 658 162 3.10 1.97 254 2.77 235 5.38 392 Ground Water Activities Tnuum 107 0

1.91 0

1.74 578 3.99 2.50 171 10 --------------------------------------------------------------------------------------------. 700

J' 9 0

8

a. - 7 Ill E 6 E

Ill

~

5 Gl 4

ra

...... 3 Ill

.c 2

,e.

< 1 0

January'19 April'19 f

Mouth MW-1 Gross Alpha MW-1 Gross Beta MW-3 Gross Alpha MW-3 Gross Beta MW-5 Gross Alpha MW-5 Gross Beta MW-3Tritium

-- MW-4Tritium July'19 October'19 MW-2 Gross Alpha MW-2 Gross Beta MW-4 Gross Alpha MW-4 Gross Beta MW-1Tritium

-- MW-2Trilium MW-5Trilium 600 500 :J' 0'

400.s:

300 ~

I L 200 1-100

'-------'- 0

M200028 US NRC 2/26/2020 10

i 9 u

8

~

.. 7 E 6 E

II 5

~ 4

.; 3

! 2

~ 1 0

TABLE 5 - CONTINUED-QUARTERLY GROUND WATER SAMPLES Action Levels Gross Alpha (3.0x10-8 JlCijcc = 30 pCi/1) Gross Beta (S.Oxl0-8 JlCijcc =SO pCijl)

Ground Water Activities 1200 1000 -

800...

u

~

600 -E

s 400 ~

200 0

January'19 Apri1'19 July'19 October'19 Month MW-6 Gross Alpha MW-6 Gross Beta MW-7 Gross Beta MW-7 Gross Alpha MW-8 Gross Alpha MW-8 Gross Beta MW-9S Gross Alpha MW-9S Gross Beta MW-90 Gross Alpha MW-90 Gross Beta

--.-MW-8Trilium MW-98 Tritium MW-90 Tritium

-+- MW-6 Tritium MW-7Tritium

M200028 US NRC 2/26/2020 TABLE 6-STREAM BOTTOM SEDIMENT SAMPLES Sample Date Gross a Grossp Co-60 Cs-137 Number Collected (pCi/g}

(pCijg)

(pCi/g)

(pCi/g)

Action 30 N/A 8

15 Level S-4 5/01/2019 3.26 1.21 0.02 0.01 TABLE 7-VEGETATION SAMPLES Sample Date Gross a Grossp Number Collected (pCi/g)

(pCi/g)

Action level 10 50 V-2 4/2/2019 1.27 8.90 Val-IV 4/2/2019 0.04 0.12

M200028 US NRC 2/26/2020 TABLE 8-DOSIMETRY RESULTS GAMMA MONITORING 2019 South Boundary East Boundary West Boundary North Boundary Station i Station i No.

! (mRem/vr)

No.

l (mRem/vr) i i

1 i

74.8 4

80.7 i

I

--- ---- --*-L--------------

---*- *-----L-------*-*----

I I

2 i

79.2 5

i 83.6 i

i

--- ------ ~--------------- ------ -----~ --------------

i i

3 i

81.8 6

i 82.8 i

i Notes:

• Dose> Control Dosimeter See Figure 4 for location.

Station i No.

! (mRem/yr) i 7

i 78.2 I

• -*-*-*- ---L*-*-*- *- *- *- *-*

I 12 i

81.9 i

---

~ ---------------

i 13 i

86.2 i

The dosimeters at each station were collected on December 12, 2019.

Badge 17 Background Dosimeter was missing CR# 33487.

Statio i nNo. ! (mRem/yr) 8 82.8 I

---

~----------------

I 9

I 68.8 i

---

~ ----------------

10 i

i 77.1 i

---

~~---------------

11 i

81.7 Gross Values Represented (No background subtracted from control readings).

Control Dosimeter reads 94.0 mRemfyr (Control Badge is in building 102B).

Missing dosimeters lost due to environmental conditions.

Background

Dosimeters Station i No.

l (mRem/yr) i 14 I

79.3 i

---

~-------- - -----

I 15 i

79.1 i

---

+--------------

i 16 i

80.1 i

---

~---- - ---------

17 i

Missing

---

T----*---------

18 i

82.6 i

___________ l ______________

i 19 i

81.3 i

---

~--------------

I 20 i

76.3

M200028 US NRC 2/26/2020 TABLE 9-AMBIENT AIR MONITORING Action Levels Beta (3x10*12) Alpha (1x10*14) 2019 ENVIRONMiNTALSTATIONS, uCi/ml MONDI STATION ONE STATION'IWO STATIONDIRIE STATION FOUR

---

---BETA ALPHA-- -8 EiA 'Ai:PH"A B ETA- 'ALPHA. BETA ALPHA JAN 2.91&14 1.24&15 3.67&14 7.32&16 2.58&14 8.23&16 2.95&14 8.29&16

---

*- -----* ------------ ---- ---1------*-

FIB 1.85&14 9.09&16 1.44&14 2.50&16 l.l9&14 5.26&16 1.50&14 5.88&16

---

c---

MAR 2.50&14 8.05&16 3.21&14 5.47&16 2.11&14 1.02&15 2.48&14 1.16&15

~ *----

• ---*-~- ----1----------*--------1----

APR 1.06&14 1.84&16 1.62&14 2.89&16 1.77&14 6.95&16 2.87&14 3.18&16 p------- 1------- - ------- 1-----*

MAY 2.19&14 3.25&16 2.32&14 5.20&16 2.25&14 3.54&16 1.95&14 4.78&16

-~--**-.. *-*-*~ *------

t-*--- ------ ----------

JUN 2.35&14 1.06&15 ~:59&14 1.46&15 2.53&14 5.65&16 2.70&14 1.06&15 JUL 1.58&14 7.10&16 1.68&14 2.77&16 1.71&14 7.74&16 1.39&14 7.46&16

-,----- - ------------- ----*-- ---- ---- -**---r-*---

AUG 2.53&14 2.23&15 1.84&14 1.91&15 1.85&14 8.66&16 2.75&14 2.24&15

---

*--- --*--p-.. --- -

SIP 2.53&14 1.66&15 2.03&14 l.l5&15 1.58&14 6.43&16 2.98&14 1.97&15

--*------ ~p----

• ---*--*---1---- -- ----- -----

OCT 3.96&14 3.00&15 3.98&14 2.04&15 3.02&14 1.97&15 4.25&14 6.88&16 NOV 6.52&14 1.93&15 7.91&14 1.68&15 5.80&14 1.69&15 8.01&14 1.93&15

---

* *-*-*-- ---------f---*-------*------------

DFC 1.45&14 5.23&16 1.53&14 1.09&15 1.45&14 1.01&15 1.86&14 7.86&16 AVmAGI 2.62&14 1.22&15 2.82&14 1.00&15 2.33&14 9.11&16 2.97&14 1.07&15 Notes: See Figure 4 for location See Figure 5 for graphical representation TABLE 10- TENNELEC EFFICIENCY Original Data Corrected Data 2000-2018 2000-2018 Year Boundary Boundary 2000 O.BmR/yr 1.1 mR/yr 2001 0.9 mR/yr 1.4mR/yr 2004 1.2 mR/yr 1.3 mR/yr 2006 1.1 mR/yr 1.3 mR/yr 2007 0.3 mR/y_r O.BmR/yr