GO2-15-068, 2014 Annual Radioactive Effluent Release Report

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2014 Annual Radioactive Effluent Release Report
ML15120A615
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 04/30/2015
From: Hettel W G
Energy Northwest
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
GO2-15-068
Download: ML15120A615 (291)
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Text

ENERGY NORTHWEST April 30, 2015 G02-15-068 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 W. Grover Hettel Columbia Generating Station P.O. Box 968, PE23 Richland, WA 99352-0968 Ph. 509.377.83111 F. 509.377.4150 wghettel@energy-northwest.com 10 CFR 50.36a

Subject:

COLUMBIA GENERATING STATION, DOCKET NO. 50-397 2014 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT In accordance with 1 O CFR 50.36a(a)(2) and Columbia Generating Station (CGS) Technical Specification 5.6.2, the Annual Radioactive Effluent Release Report is hereby submitted as an enclosure to this letter. The report includes a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released from CGS during the reporting period. A complete copy of the Columbia Generating Station Offsite Dose Calculation Manual (ODCM) is also enclosed with this submittal as required by Technical Specification 5.5.1 . This copy includes revisions made to the document since the last submittal.

There are no commitments being made to the NRC by this letter. Should you have any questions or desire additional information regarding these matters, please contact J.R. Trautvetter at (509) 377-4337. W. Grover Hettel Vice President

-Operations Executed on: ..//'!>o /1 Enclosures as stated. cc: NRC Region IV Administrator M. Priddy-DOH NRC NRR Project Manager L. Albin -DOH NRC Senior Resident lnspector/988C S. Snyder -PNNL (w/o ODCM) CD Sonoda -BPA/1399 (w/o enclosures)

E. Everett -ANI (w/o ODCM) WA Horin -Winston & Strawn (w/o enclosures)

SC Posner -EFSEC (w/o ODCM)

REFERENCES:

10 CFR 50.36a(a)(2) 10 CFR 72.44(d)(3)

CGS Technical Specification 5.6.2 Columbia Generating Station Annual Radioactive Effluent Release Report January through December 2014 Energy Northwest Submitted April, 2015 Columbia Generating Station i 2014 Radioactive Effluent Report Table of Contents

1.0 INTRODUCTION

......................................................................................... 1

2.0 LIQUID

EFFLUENTS ................................................................................... 1

3.0 GASEOUS

EFFLUENTS ............................................................................. 1 Routine Releases .................................................................................. 1 Heating Steam Vents and Reliefs.............................................................. 2 Cooling System Sediment Disp osal Cell - Diffuse Source ............................... 3 Table 3a - Source Term of Disposal Cell ............................................... 3 Storm Drain Pond (SDP)-

Diffuse Source .................................................. 3 Table 3b - Source Term for Storm Drain Pond ........................................ 4 Abnormal Releases ............................................................................... 4 Carbon-14 .......................................................................................... 5 Table 3d - Carbon-14 Production .......................................................... 6 Out-of-Service Effluent Monitors ............................................................. 6 Gaseous Effluent Tables

......................................................................... 8 Table 3-0 10 CFR Part 50 Appendix I Dose Compliance ......................... 8 Table 3-1 Main Plant Vent Releases - Mixed Mode ............................... 9 Table 3-2 Turbine Building Releases - Mixed Mode ............................. 11 Table 3-3 Radwaste Building Releases - Ground Mode ........................ 13 Table 3-4 Summation of Releases .................................................... 15 Table 3-5 Gaseous Purges and Vents ............................................... 16 Table 3-6 Lower Limits of Detection .................................................. 17

4.0 SOLID

RADWASTE .................................................................................. 18

5.0 METEOROLOGICAL

DATA ...................................................................... 25 Joint Frequency Distribut ion Tables for 2014 ........................................... 26 Table 5-1 1st Quarter Average, 33 Ft Above Ground Level (AGL) ........... 26 Table 5-2 1st Quarter Average, 245 Ft AGL ........................................ 28 Table 5-3 2nd Quarter Average, 33 Ft AGL ........................................ 30 Table 5-4 2nd Quarter Average, 245 Ft AGL ....................................... 32 Table 5-5 3rd Quarter Average, 33 Ft AGL ......................................... 34

Columbia Generating Station ii 2014 Radioactive Effluent Report Table 5-6 3rd Quarter Average, 245 Ft AGL ........................................ 36 Table 5-7 4th Quarter Average, 33 Ft AGL

.......................................... 38 Table 5-8 4th Quarter Average, 245 Ft AGL ........................................ 40 Table 5-9 Year 2014, 33 Ft AGL ....................................................... 42 Table 5-10 Year 2014, 245 Ft AGL .................................................... 44 Table 5-11 Year 2014 Growing Season - Daylight Hours ....................... 46 6.0 DOSE ASSESSMENT -- IM PACT ON MAN ..............................................

48 Dose to Onsite Members of the Public ..................................................... 48 Table 6.0; Dose to Members of the Public within the Site Boundary ........... 49 Dose to Offsite Members of the Public ..................................................... 49 Table 6-5 Summary of Doses from Gaseous Effluents ............................... 49 Table 6-6 50-Mile Population Dose from Gaseous Effluents ................... 51

7.0 REVISIONS

TO THE O DCM ......................................................................

52 8.0 REVISIONS TO THE PROCESS CONTROL PROGRAM (PCP) ..............

52 9.0 NEW OR DELETED LOCATIONS FOR DOSE ASSESSMENTS AND/OR ENVIRONMENTAL MO NITORING LOCATIONS ................................

53 10.0 MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREA TMENT SYST EMS ..........................................................

53 11.0 ERRATA/CORRECTIONS TO PREVIOUS ARERRS

.............................

54 ATTACHMENT 1 - CORRECTIONS TO THE 2013 ARERR ..............................

55 Columbia Generating Station 1 2014 Radioactive Effluent Report

1.0 Introduction

This report has been prepared in compliance wit h Parts 50 of Title 10 of the Code of Federal Regulations (CFR), specifically 10 CFR 50.36a(a)(2) and Columbia Generating Station (CGS) Technical Specific ation 5.6.2. It includes a summary of the quantities of radioactive liquid and gaseous effluents and solid radwaste

released from CGS during calendar year 2014. Effluent data is summarized on a quarterly basis.

Throughout this report, units of activity and dose are as defined in 10 CFR 20.1004, 20.1005, and Nuclear Regulatory Commissi on (NRC) Regulatory Guide 1.109-1977.

The United States National Council on R adiation Protection published Report #160 in 2009 which can serve to put radiation dose into perspective for the reader of this

report. It was determined that the average y early dose to a person living in the United States is 620 mrem from all sources.

Of this, ~50% is attributed to natural sources (radiation from gaseous radon, co smic or space radiation, natural radioactive material in the ground, and natural radioactive materials in our bodies).

About 48% is attributed to diagnostic and t herapeutic medical exposure. Radiation dose from nuclear power was grouped into a category comprising <0.1% of the total. 2.0 Liquid Effluents No planned releases of contaminated liquids from the liquid radwaste processing system were discharged to the Columbia River from CGS during calendar year

2014. The last discharge to the river from liquid processing took place in 1998.

According to ground water monitoring in 2014, there were no known leaks to the environment of radioactive liquids. 3.0 Gaseous Effluents Routine Releases Gaseous effluents from CGS are released fr om three (3) principal release points:

Main Plant Vent -- mixed mode release Turbine Building - mixed mode release

Radwaste Building -- ground level release

The gaseous source terms from each release point are listed in Tables 3-1, 3-2, and 3-3. The activation gas argon-41 is incl uded in these tables under fission gases to allow a match with the fission and activation gas totals of Table 3-4. Table 3-4 provides a summation of the total activity released, the average release rate, gross alpha radioactivity, and the estimated total error associated with the measurements

of radioactivity in the gaseous effluents.

Columbia Generating Station 2014 Radioactive Effluent Report 2 Radioactivity measurements for gaseous e ffluent releases are performed for fission and activation gases by collecting the samples in a Marinelli beaker and analyzing them using gamma spectroscopy. Air is analyzed for tritium by collection of water

vapor on a desiccant with subsequent dist illation and liquid scintillation counting.

Particulates and iodines are sampled continuously and the sample media (particulate filters and charcoal cart ridges) are analyzed weekly using gamma spectroscopy. Each quarter a chemical separation process is used to isolate

strontium from the composite particulate filters and quantification is accomplished with liquid scintillation detection. The av erage energy per disintegration of fission and activation gases is not included in this report as it is not required by Technical

Specifications and is not used for gaseous effluent release rate limit calculations.

When a radionuclide is not positively identif ied at levels greater than the Minimum Detectable Activity (MDA) or Minimum De tectable Concentration (MDC), a value of zero is used for release concentrations and offsite dose assessments. The MDA is

an 'a posteriori' value that is determined during analysis of a sample. Table 3-6

contains the Lower Limit of Detection (LLD

- which is an 'a priori' value determined before a sample is analyzed) values corresponding to the sampling methods and

analytical instruments used for each princi pal radionuclide, except carbon-14 (C-14 or 14 C) as C-14 releases are calculated usi ng an Electric Power Research Institute (EPRI) methodology that is discussed in more detail later in this chapter.

Dose calculations were performed for releases using the NRC XOQDOQ and NRC

Regulatory Guide 1.109 methodology (manua lly or with the GASPAR II computer program) and parameter values as descr ibed in the Offsite Dose Calculation Manual (ODCM). This methodology was based on Publication 2 of the International Commission on Radiation Protection released in 1959.

Quarterly and annual doses to the potentially highest-exposed Member of the Public (MOP) at and beyond the site boundary were calculated. In addition, quarterly and annual doses were calculated at actual re sident locations identified in the annual land use census. ODCM limits are based on 10 CFR 20 and Appendix I to 10 CFR

50. The threshold for air dose applies to fission and activation gases and is ten (10)

mrad for beta and five (5) mrad for gamma quarterly and twenty (20) mrad for beta

and ten (10) mrad for gamma annually. The threshold for organ dose applies to

iodine, tritium, and particulates with half-lives greater than eight days and is seven and a half (7.5) mrem quarterly and fifteen (15) mrem annually. For fission and

activation gases the dose rate limits are less than or equal to 500 mrem per year to

the whole body and less than or equal to 3000 mrem per year to the skin. For

iodines, particulates, and tritium the dose rate limit is less than or equal to 1500

mrem/year to any organ.

Dose calculations were also conducted fo r Members of the Public within the site boundary. The results are discuss ed and tabulated in Section 6.0.

Heating Steam Vents and Reliefs Building heat during the winter months is pr ovided by either Seal Steam Evaporator B or by the Auxiliary Boiler. Vents and re liefs of this system to the atmosphere are Columbia Generating Station 3 2014 Radioactive Effluent Report unmonitored for licensed materials but the water used for steam is sampled routinely while in use. The Auxiliary Boiler was not used during the 2014 heating

season. At the start of the heating s eason, analysis of water in Seal Steam Evaporator B indicated 1.86E-10 curies/ml (Ci/ml) of tritium and this activity decreased during the season due to diluti on with non-tritiated makeup water.

Assuming the entire initial inventory (1.14E

+07 ml) was released, the total release would be 2.12E-03 curies of tritium thr ough unmonitored vents of the heating steam system within and outside the main power bl ock (Turbine, Radwaste, Reactor, and General Services buildings). These vents are unmonitored as this is an

insignificant release point as defined in Revision 2 of NRC Regulatory Guide 1.21 because the activity comprises less than 1% of the total tritium released during

2014. Cooling System Sediment Disposal Cell - Diffuse Source Cooling Tower and Spray Pond sediment are periodically sampled and disposed of on the surface of the ground in a fenced ar ea within the site boundary authorized by the Washington State Energy Facility Site Evaluation Council. No materials are permitted to be placed in the Cooling S ystem Sediment Disposal Cell (Disposal Cell) with licensed activity greater than t he following limitations in Table 3a:

Table 3a - Source Term of Disposal Cell Radionuclide Limit (pCi/gm) Co-60 5 Mn-54 30 Zn-65 50 Cs-134 10 Cs-137 20

The calculated dose to MOP based on the limits shown above, were calculated and reported in the 2013 Annual Radiological Effluent Release Report, and are being

discussed here as a comparison to the doses resulting from routine releases in 2013. The calculated dose resulting from re-suspension of the sediment in the Disposal Cell accounted for less than 1% of the doses estimated from the routine releases in 2013. The results of sample data for sediment added to the Disposal

Cell in 2014 showed contaminant concentrati ons below the limits shown in Table 3a. Therefore, potentially re-suspended acti vity will be less than that calculated in 2013, and a dose estimate for the Disposal Cell will not be included in this report as

it is a less-significant release point.

Storm Drain Pond (SDP)- Diffuse Source Columbia Generating Station was desi gned with an evaporation basin (Storm Drain Pond) within the Owner Controlled Ar ea and described in the CGS National Pollutant Discharge Elimination System (N PDES) permit as "Outfall 2". The SDP receives storm water runoff, wastewater from potable and demineralized water production, intake air wash unit blow down, and water from non-radioactive equipment dewatering, leakage, cleaning, and fl ushing activities. Since discovery Columbia Generating Station 2014 Radioactive Effluent Report 4 of residual licensed radioactive material in the soil of the SDP in 1993, the pond has been fenced and posted in accordance with 10 CFR 20 requirements.

In 2014, a new system of lined ponds (Ev aporation Ponds) was constructed. On November 13, 2014, the water line to t he SDP was re-routed to the Evaporation Ponds, so it is assumed that the input of residual licensed radioactive material to the SDP has ceased. The liquid composite samp ler that was previously used with the SDP was also moved to the water line that is routed to Ponds 3 and 4 of the Evaporations Ponds. The sample results from Nov. 13 th through December will be considered jointly with the liquid composite sa mples taken previously in the year for dose assessment purposes.

An evaluation of the off-site doses resulting from SDP re-suspended soil and/or migration through groundwater was prev iously calculated in the 2013 Annual Radiological Effluent Release Report. The estimated doses in 2013 accounted for

less than 1% of the doses estimated fr om the routine releases defined above.

The activities in samples (with the except ion of tritium) from the flow-proportional

sampler in Outfall 002 were less than the MDA in 2014. The tritium activity detected

in Outfall 002 is shown in Table 3b, and is less than 1% of the Tritium activity

released from the routine releases defined above.

In December of 2014, environmental sample s of soil in the SDP were sampled, and the maximum concentrations of radionuclides are shown in Table 3b. The

concentrations shown in Table 3b are le ss than the concentrations observed during

the 2013 calendar year. Therefore, dose es timates for the SDP will not be included in this report as it is a less-significant release point.

Table 3b - Source Term for Storm Drain Pond Max Activity In Soil (pCi/kg)Mn-54<MDACo-58<MDACo-60 1130 Zn-65<MDACs-134<MDACs-137 115 Total Activity In Outfall (Curies)

H-35.39E-02 Abnormal Releases There was one abnormal release documented in 2014. A door at the base of the reactor building release duct was opened to allow maintenance crews to install a Columbia Generating Station 5 2014 Radioactive Effluent Report new sample line that will be used with a new reactor building effluent monitor. The work started in November of 2014, and continued through April of 2015.

A similar condition was encountered and documented in the 2013 Annual Effluent Report

The reactor building Heating, Ventilation, and Air Conditioning (HVAC) System and

the Offgas Post Treatment System both disc harge into the middle of this vertically-oriented release duct. Normally, the path of least resistance is out the top of the

duct. Based on past experience (documented in the 2013 Annual Radiological

Effluent Release Report), approximately 11.4%

of the exhaust air that would have

gone out the designed (upper) exit of the sta ck was exiting horizontally out of the

base of this vertical release duct.

This was considered a monitored release because a representative sample of the

air in the exhaust duct during this time was being taken by a 32-nozzle sample array. To demonstrate compliance with r outine ODCM Requirements for Operability (release limitations), the exhaust flow rate measured by the flow elements in the

upper portion of the vertical release duct wa s adjusted to reflect the actual release flow rate (corrected for loss at the door).

As such, the activity released through the open door was accounted for by the Main Plant Vent Release Point.

Carbon-14 14 C, with a half-life of 5,730 years, is a naturally occurring isotope of carbon produced by cosmic ray interactions in the atmosphere. When 14 C decays it emits a beta particle of varying energies up to 0.156 MeV with an average energy of 0.049 MeV. As a result of this low energy, t he air and inhalation doses are insignificant.

Nuclear weapons testing in the 1950s and 1960s significantly increased the amount of 14 C in the atmosphere.

14 C is also produced in commercial nuclear reactors, but the amounts produced are much less than those produced naturally or from weapons testing.

Although 10 CFR 50.36a has always requir ed reporting the principal nuclides released, 14 C had been exempted because of the la rge quantity that existed naturally in the environment. However, following release of Revision 2 of Regulatory Guide 1.21 (Measuring, Evaluat ing, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste), the NRC recommended that

U.S. nuclear power pl ants evaluate whether 14 C is a "principal radionuclide", and if so, report the amount of 14 C released.

A radionuclide is considered a principal r adionuclide if it contributes either (1) greater than 1 percent of the 10 CFR Part 50, Appendix I, design objective dose, or

(2) greater than 1 percent of the activity of all radionuclides in the type of effluent being considered. This implementation of "primary radionuclides" ensures both (1) radionuclides that are present in relative ly large amounts but that contribute very little to dose, and (2) radionuclides that ar e present in very small amounts but that have a relatively high contribution to dose are appropriately included in the annual

effluent report.

Columbia Generating Station 2014 Radioactive Effluent Report 6 At CGS, improvements over the years in effluent management practices and fuel

performance have resulted in a significant decrease in radioactive gaseous

emissions. As a result, 14 C has become a "principal radionuclide" for the gaseous effluent pathway at CGS. CGS's 2014 A nnual Radioactive Effluent Release Report (ARERR) contains estimates of 14 C radioactivity released in 2014, and estimates of public dose resulting from the 14 C effluent.

Since there were no liquid tank releases to the river, there is no dose reported from liquid releases in this report. The quantity of gaseous 14 C released to the environment is estimated by use of a 14 C source term scaling factor based on power generation. EPRI Technical Report 1021106 estimates the production of 14 C at approximately 5 Ci/GW th - yr for a plant like CGS. This would result in a calculated release of 17.8 Ci/yr based on the rated power for CGS. The EPRI report also describes the chemical form of the 14 C released as being 95% Carbon Dioxide, which could be incorporated into gr owing plant during photosynthesis.

Based on 95% Carbon Dioxide, and assuming that all 14 C generated is released in gaseous effluent, then the total 14 C emission shown in Table 3d is 16.9 Ci.

Public dose estimates from airborne 14 C are included with the other radionuclides and are shown in Section 6 of this report.

Table 3d - Carbon-14 Production The 14 C production rate was estimated using the methodology in EPRI Technical Report 1021106 which also estimated that 95% of 14 C production is released as 14 CO 2 and the remainder assumed to be 14 CH 4. Out-of-Service Effluent Monitors The effluent monitors for the Turbine and R adwaste Buildings were not returned to a functional status within the 30-day restor ation time because both effluent monitors were being replaced with new Sample Racks (Engineering Change 4788 and 4789).

The Turbine Building effluent monitor was non-functional from 01/27/2014 to

05/31/2014, and the Radwaste Building effl uent monitor was non-functional from 01/27/2014 to 06/06/2014. During the peri od of the installation project, Columbia Generating Station 7 2014 Radioactive Effluent Report compensatory measure were in place and functioning to continuously collect particulate and iodine samples, measure the sample line flow rate, and collect necessary grab samples. The normal equipment used to measure the building exhaust air flow rate was not affected by the effluent monitor replacement.

The standby service water monitor on the "A" loop and the Liquid Radwaste monitor were declared out of service between 3/12/2014 and 6/4/2014 because of work

being performed on a battery back-up power supply (Condition Report-306476).

The monitors were functioning the entir e time because the main power source remained operational, but the language in t he Licensee Controlled Specification (LCS) required that the technical specif ication components supported by the battery back-up be taken out of service. A subs equent Condition Report (CR) was written (CR-318861), and the language in the LCS is bei ng revised to clarify that non-TS components can remain functional.

The sample pump used to sample the Reactor Building Exhaust air was out of

service from 11/14/2014 to 12/20/2014. Com pensatory Measures were in place during this period. The pump was initially ta ken out of service to change the oil, but automatically tripped shortly after restoration (CR-317820 was written).

Subsequently, a fuse was replaced, but this did not resolve the issue. So, the

blower was replaced and the flow settings were re-evaluated.

Columbia Generating Station 2014 Radioactive Effluent Report 8Gaseous Effluent Tables Table 3-0 10 CFR Part 50 Appendix I Dose Compliance Report Period: January -- December 2014 1st Quarter2nd Quarter3rd Quarter4th QuarterYear*Noble GasGamma Air Dose (mrad)4.85E-034.56E-033.84E-034.37E-031.89E-02ODCM Limit555510% of Limit9.70E-029.12E-027.68E-028.74E-021.89E-01Beta Air Dose (mrad)1.71E-031.61E-031.36E-031.54E-036.66E-03ODCM Limit1010101020% of Limit1.71E-021.61E-021.36E-021.54E-023.33E-02Iodine-131, Iodine-133, Tritium, and Particulates with half-lives greater than eight days. Organ Dose (mrem)4.12E-024.05E-022.54E-027.99E-021.78E-01ODCM Limit7.57.57.57.515% of Limit5.50E-015.40E-013.39E-011.07E+001.19E+00

  • Calculated quarterly doses cannot be directly compared to the annual doses. Each above listed quarterly dose is the highest calculated dose based on a number of variables. Variables that make comparison

difficult include location, seasonal changes in meteorological data (quarterly joint frequency distribution (JFD) tables vs. annual JFD

tables), receptor age, target organ, and characteristics of the emitted radionuclides.

This table shows the highest air dose or organ dose for either a hypothetical

resident at the site boundary or an act ual resident within a 5-mile radius.

The pathways of exposure considered at the site boundary are the plume exposure, ground exposure, and inhalati on pathways only. The potentially highest-exposed MOP from all gaseous effluent releases (including C-14), for

the full year of 2014, for residents ident ified in the 2014 CGS Land Use Census, and for all pathways of exposure identifi ed, was for a resident (child) at 4.79 miles ESE. The highest organ dose for t he plume exposure, ground exposure, garden produce ingestion, and inhalation pathways was 1.78E-1 mrem which is

1.19% of the 15 mrem 10 CFR 50 Appendix I guideline.

Columbia Generating Station 9 2014 Radioactive Effluent Report Table 3-1 Main Plant Vent Releases - Mixed Mode Fission Gases and Iodines Report Period: January -- December 2014 1st2nd3rd4th Quarte r Quarte r Quarte r Quarte r Yea rNuclides Release d(Ci)(Ci)(Ci)(Ci)(Ci)A. Fission gaseskrypton-85<MDA<MDA<MDA<MDA<MDAkrypton-85m<MDA<MDA<MDA<MDA<MDAkrypton-87<MDA<MDA<MDA<MDA<MDAkrypton-88<MDA<MDA<MDA<MDA<MDA xenon-133<MDA<MDA<MDA<MDA<MDAxenon-133m<MDA<MDA<MDA<MDA<MDAxenon-135<MDA<MDA<MDA<MDA<MDA xenon-135m<MDA<MDA<MDA<MDA<MDA xenon-138<MDA<MDA<MDA<MDA<MDA Othersargon-411.87E+011.91E+011.61E+011.14E+016.54E+01Total for period *1.87E+011.91E+011.61E+011.14E+016.54E+01B. Iodinesiodine-131<MDA<MDA<MDA<MDA<MDA iodine-132<MDA<MDA<MDA<MDA<MDA iodine-133<MDA<MDA<MDA<MDA<MDAiodine-134<MDA<MDA<MDA<MDA<MDAiodine-135<MDA<MDA<MDA<MDA<MDATotal for period *0.00E+000.00E+000.00E+000.00E+000.00E+00

  • MDA values are not included in the totals. MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).

Columbia Generating Station 2014 Radioactive Effluent Report 10Table 3-1 Main Plant Vent Rel eases - Mixed Mode (Continued)

Particulates and Tritium Report Period: January -- December 2014 1st2nd3rd4thQuarterQuarterQuarterQuarterYearNuclides Released(Ci)(Ci)(Ci)(Ci)(Ci)C. Particulatesstrontium-89<MDA5.30E-07<MDA1.35E-076.65E-07strontium-90<MDA<MDA<MDA9.35E-089.35E-08cesium-134<MDA<MDA<MDA<MDA<MDAcesium-137<MDA<MDA<MDA<MDA<MDA barium-lanthanum-140<MDA<MDA<MDA<MDA<MDAsilver-110m<MDA<MDA<MDA<MDA<MDAcerium-141<MDA<MDA<MDA<MDA<MDAcerium-144<MDA<MDA<MDA<MDA<MDAcobalt-58<MDA<MDA<MDA<MDA<MDAcobalt-603.02E-066.77E-07<MDA2.98E-073.99E-06iron-59<MDA<MDA<MDA<MDA<MDAmanganese-54<MDA<MDA<MDA<MDA<MDAzinc-65<MDA<MDA<MDA<MDA<MDAchromium-51<MDA<MDA<MDA<MDA<MDAantimony-125<MDA<MDA<MDA<MDA<MDATotal for period*3.02E-061.21E-060.00E+005.26E-074.75E-06Others with T 1/2 < 8 daysarsenic-76<MDA<MDA<MDA<MDA<MDA bromine-822.09E-057.80E-063.28E-053.06E-059.22E-05copper-64<MDA<MDA<MDA<MDA<MDAmolybdenum-99<MDA<MDA<MDA<MDA<MDArhenium-188<MDA<MDA<MDA<MDA<MDAsodium-24<MDA<MDA<MDA<MDA<MDAtechnetium-99m<MDA<MDA<MDA<MDA<MDAzinc-69m<MDA<MDA<MDA<MDA<MDATotal with T 1/2 < 8 days*2.09E-057.80E-063.28E-053.06E-059.22E-05D. Tritium tritium5.84E-016.25E-015.00E-013.50E-012.06E+00

  • MDA values are not included in the totals. MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).

Columbia Generating Station 11 2014 Radioactive Effluent Report Table 3-2 Turbine Building Releases - Mixed Mode Fission Gases and Iodines Report Period: January -- December 2014 1st2n d 3r d 4th Quarte r Quarte r Quarte rQuarterYea rNuclides Release d(Ci)(Ci)(Ci)(Ci)(Ci)A. Fission gaseskrypton-85<MDA<MDA<MDA<MDA<MDAkrypton-85m<MDA<MDA<MDA<MDA<MDAkrypton-87<MDA<MDA<MDA<MDA<MDAkrypton-88<MDA<MDA<MDA<MDA<MDA xenon-133<MDA<MDA<MDA<MDA<MDA xenon-133m<MDA<MDA<MDA<MDA<MDA xenon-135<MDA<MDA<MDA<MDA<MDA xenon-135m<MDA<MDA<MDA<MDA<MDA xenon-138<MDA<MDA<MDA<MDA<MDA Othersargon-41<MDA<MDA<MDA<MDA<MDATotal for period *0.00E+000.00E+000.00E+000.00E+000.00E+00B. Iodinesiodine-1311.21E-041.30E-041.85E-048.88E-055.25E-04 iodine-132<MDA<MDA<MDA<MDA<MDAiodine-1336.51E-047.86E-041.22E-037.34E-043.39E-03iodine-134<MDA<MDA<MDA<MDA<MDA iodine-135<MDA<MDA<MDA<MDA<MDATotal for period *7.72E-049.16E-041.40E-038.23E-043.91E-03

  • MDA values are not included in the totals. MDA = Less than the "a posteriori" minimal detec table activity (microcuries per unit mass or volume).

Columbia Generating Station 2014 Radioactive Effluent Report 12Table 3-2 Turbine Building Rel eases - Mixed Mode (Continued)

Particulates and Tritium Report Period: January -- December 2014 1st2nd3rd4thQuarterQuarte rQuarte r Quarte r Yea rNuclides Release d(Ci)(Ci)(Ci)(Ci)(Ci)C. Particulatesstrontium-895.54E-057.32E-069.26E-066.45E-067.84E-05strontium-90<MDA<MDA<MDA<MDA<MDAcesium-134<MDA<MDA<MDA<MDA<MDAcesium-137<MDA<MDA<MDA<MDA<MDA barium-lanthanum-140<MDA<MDA<MDA<MDA<MDAcerium-141<MDA<MDA<MDA<MDA<MDAcerium-144<MDA<MDA<MDA<MDA<MDAcobalt-58<MDA<MDA<MDA<MDA<MDA cobalt-606.62E-053.56E-054.26E-053.36E-051.78E-04iron-59<MDA<MDA<MDA<MDA<MDAmanganese-54<MDA<MDA<MDA<MDA<MDAzinc-655.91E-062.13E-068.89E-06<MDA1.69E-05 chromium-51<MDA<MDA<MDA<MDA<MDATotal for period*1.27E-044.50E-056.07E-054.01E-052.73E-04Others with T 1/2 < 8 daysmolybdenum-99<MDA<MDA<MDA<MDA<MDAtechnecium-99m<MDA<MDA8.58E-06<MDA8.58E-06strontium-91<MDA<MDA1.38E-05<MDA1.38E-05Total with T 1/2 < 8 days*0.00E+000.00E+002.24E-050.00E+002.24E-05 D. Tritium tritium4.31E+001.82E+009.13E+006.71E+002.20E+01

  • MDA values are not included in the totals. MDA = Less than the "a posteriori" minimal detectable activity (microcuries per

unit mass or volume).

Columbia Generating Station 13 2014 Radioactive Effluent Report Table 3-3 Radwaste Building Releases - Ground Mode Fission Gases and Iodines Report Period: January -- December 2014 1st2n d 3r d 4th Quarte r Quarte r Quarte rQuarterYea rNuclides Release d(Ci)(Ci)(Ci)(Ci)(Ci)A. Fission gaseskrypton-85<MDA<MDA<MDA<MDA<MDAkrypton-85m<MDA<MDA<MDA<MDA<MDAkrypton-87<MDA<MDA<MDA<MDA<MDAkrypton-88<MDA<MDA<MDA<MDA<MDA xenon-133<MDA<MDA<MDA<MDA<MDA xenon-133m<MDA<MDA<MDA<MDA<MDA xenon-135<MDA<MDA<MDA<MDA<MDA xenon-135m<MDA<MDA<MDA<MDA<MDA xenon-138<MDA<MDA<MDA<MDA<MDA Othersargon-41<MDA<MDA<MDA<MDA<MDATotal for period *0.00E+000.00E+000.00E+000.00E+000.00E+00B. Iodinesiodine-131<MDA<MDA<MDA<MDA<MDAiodine-132<MDA<MDA<MDA<MDA<MDAiodine-133<MDA<MDA<MDA<MDA<MDAiodine-134<MDA<MDA<MDA<MDA<MDA iodine-135<MDA<MDA<MDA<MDA<MDATotal for period *0.00E+000.00E+000.00E+000.00E+000.00E+00

  • MDA values are not included in the totals. MDA = Less than the "a posteriori" minimal detec table activity (microcuries per unit mass or volume).

Columbia Generating Station 2014 Radioactive Effluent Report 14Table 3-3 Radwaste Building Releases -

Ground Mode (Continued)

Particulates and Tritium Report Period: January -- December 2014 1st2nd3rd4thQuarterQuarterQuarterQuarterYear Nuclides Released(Ci)(Ci)(Ci)(Ci)(Ci)C. Particulatesstrontium-89<MDA1.51E-07<MDA<MDA1.51E-07strontium-902.84E-08<MDA<MDA3.26E-086.10E-08cesium-134<MDA<MDA<MDA<MDA<MDAcesium-137<MDA<MDA<MDA<MDA<MDA barium-lanthanum-140<MDA<MDA<MDA<MDA<MDAcerium-141<MDA<MDA<MDA<MDA<MDAcerium-144<MDA<MDA<MDA<MDA<MDAcobalt-58<MDA<MDA<MDA<MDA<MDAcobalt-605.91E-072.57E-07<MDA1.01E-061.86E-06iron-59<MDA<MDA<MDA<MDA<MDAmanganese-54<MDA<MDA<MDA<MDA<MDAzinc-65<MDA<MDA<MDA<MDA<MDATotal for period*6.19E-074.08E-070.00E+001.04E-062.07E-06Others with T 1/2 < 8 daysmolybdenum-99<MDA<MDA<MDA<MDA<MDATotal with T 1/2 < 8 days*0.00E+000.00E+000.00E+000.00E+000.00E+00D. Tritiumtritium1.91E-012.81E-019.46E-026.33E-026.29E-01

  • MDA values are not included in the totals. MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).

Columbia Generating Station 15 2014 Radioactive Effluent Report Table 3-4 Summation of Releases Gaseous Effluents Report Period: January -- December 2014 Est*1st2nd3rd4thTotalQuarterQuarterQuarterQuarterYear%Erro rA. Fission and activation gasesTotal release (Ci)1.87E+011.91E+011.61E+011.14E+016.54E+014.20E+01Average release rate (Ci/s)2.38E+002.43E+002.05E+001.45E+002.08E+00 Percent of ODCM limit (%)3.71E-033.96E-032.94E-033.34E-033.60E-03B. IodinesTotal I-131 (Ci)1.21E-041.30E-041.85E-048.88E-055.25E-044.60E+01Average release rate (Ci/s)1.54E-051.65E-052.36E-051.13E-051.67E-05 Percent of ODCM limit (%) 5.08E-065.47E-066.29E-063.74E-064.98E-06C. Particulates1.31E-044.66E-056.07E-054.17E-052.80E-044.50E+01Average release rate (Ci/s)1.67E-055.93E-067.73E-065.30E-068.91E-06 Percent of ODCM limit (%) 2.02E-068.73E-076.94E-071.30E-061.13E-06Gross alpha radioactivity (Ci)3.04E-062.48E-063.47E-062.06E-061.10E-057.30E+01D. TritiumTotal release (Ci)5.08E+002.73E+009.73E+007.12E+002.47E+012.50E+01Average release rate (Ci/s)6.46E-013.47E-011.24E+009.06E-017.84E-01 Percent of ODCM limit (%) 6.60E-051.64E-051.73E-051.63E-051.62E-05Particulates with half-lives >8 days (Ci)

  • Measurement errors are sample-specific. The values reported represent an approximate overall error.

Some of the contributors of this error are measurements associated with estimating the sample volume, the exhaust duct flow rates, pl ateout factors, charcoal cartridge efficiencies, temperatures of samp le lines, buildings, and ambient air, barometric pressure, sample line vacuum, run time estimates, anisokinetic correction factors w here needed, and gravimetric, gamma spectroscopy, and liquid scintillation analysis errors.

ODCM release rate limits are based on dos e rate, and the percent of ODCM limit

shown in Table 3-4 is for the following limits. For fission and activation gases the

dose rate limits are less than or equal to 500 mrem/year to the whole body and less than or equal to 3000 mrem/year to the skin.

For I-131, particulates, and tritium the dose rate limit is less than or equal to 1500 mrem/year to any organ.

Columbia Generating Station 2014 Radioactive Effluent Report 16Table 3-5 Gaseous Purges and Vents Report Period: January -- December 2014TotalMaximumMinimumMeanTypeNumbe rTime (hr.)Time (hr.)Time (hr.)Time (hr.)Purge31.45E+017.92E+008.50E-014.84E+00Vent816.31E+012.53E+001.83E-017.79E-01 Columbia Generating Station is a continuous release plant. All purges and vents

are discharged through the High-Efficien cy Particulate Air (HEPA) filters and charcoal beds of the Standby Gas Treat ment System and released through the reactor building release duct which is, by procedure and design, sampled and

continuously monitored for radioactive gaseous waste.

Columbia Generating Station 17 2014 Radioactive Effluent Report Table 3-6 Lower Limits of Detection Gaseous Effluents Report Period: January -- December 2014 Fission GasesNuclideRequired LLD f (Ci/cc)Achieved Analysis LLD (Ci/cc)krypton-871.00E-041.05E-08 krypton-881.00E-041.29E-08 xenon-1331.00E-041.00E-08 xenon-133m1.00E-043.25E-08 xenon-1351.00E-043.77E-09 xenon-1381.00E-044.48E-08 Iodines iodine-1311.00E-123.58E-14 iodine-1331.00E-108.78E-13Particulatesstrontium-891.00E-111.16E-14strontium-901.00E-115.12E-15cesium-1341.00E-111.03E-14cesium-1371.00E-112.67E-14 molybdenum-991.00E-111.61E-13cerium-1411.00E-111.32E-14cerium-1441.00E-119.82E-14 cobalt-581.00E-111.94E-14 cobalt-601.00E-112.46E-14 iron-591.00E-115.39E-14 manganese-541.00E-112.55E-14 zinc-651.00E-114.30E-14 Gross Alpha1.00E-112.44E-15 Tritium hydrogen-31.00E-068.27E-11 f From ODCM Table 6.2.2.1-1 Columbia Generating Station 2014 Radioactive Effluent Report 184.0 Solid Radwaste This section of the annual effluent repor t provides information required by the Columbia Generating Station Offsite Do se Calculation Manual and recommended by Nuclear Regulatory Commissi on Regulatory Guide 1.21-1974. Solid Radwaste Information required by the Offsite Dose Calculation Manual January -- December 2014 Class A 1. Container Volumes 5 GAL PAIL 1.0 ft 3 30 GAL DRUM 4.0 ft 3 55 GAL DRUM 7.5 ft 3 Liquid Tote 42.8 ft 3 B-25 Steel Box 96 ft 3 PL8-120 Polyethylene HIC 120.3 ft 3 EL-142 Polyethylene HIC 132.4 ft 3 14-170 Polyethylene HIC 170.8 ft 3 B-88 Steel Box 138 ft 3 ES-190 Steel Liner 170.2 ft 3 14-170 Steel Liner 180.1 ft 3 2. Total Curies 1.47E +02 Curies

3. Principal Radionuclides

Nuclide Curies Percent Co-60 7.29E+01 4.96E+01 Fe-55 3.47E+01 2.36E+01 Zn-65 1.80E+01 1.22E+01 Mn-54 7.99E+00 5.44E+00 Ni-63 5.18E+00 3.52E+00 Co-58 4.71E+00 3.20E+00 C-14 1.45E+00 9.86E-01 Columbia Generating Station 19 2014 Radioactive Effluent Report Nuclide Curies Percent Cr-51 4.27E-01 2.90E-01 Ag-110m 3.91E-01 2.66E-01 Cs-137 3.05E-01 2.07E-01 H-3 2.30E-01 1.56E-01 Fe-59 1.19E-01 8.10E-02 Sr-89 5.29E-02 3.60E-02 Ba-140 4.86E-02 3.31E-02 Nb-95 4.32E-02 2.94E-02 I-131 5.05E-02 3.44E-02 Zr-95 3.53E-02 2.40E-02 Co-57 2.37E-02 1.61E-02 Pu-241 1.69E-02 1.15E-02 La-140 1.68E-02 1.14E-02 Ni-59 1.46E-02 9.93E-03 Sr-90 5.04E-03 3.43E-03 Ce-141 3.22E-03 2.19E-03 Sb-124 1.10E-03 7.48E-04 Sb-125 5.71E-04 3.88E-04 Cm-242 4.87E-04 3.31E-04 Pu-238 3.17E-04 2.16E-04 Pu-239 2.27E-04 1.54E-04 Am-241 1.95E-04 1.33E-04 Tc-99 5.78E-05 3.93E-05 Cm-243 3.45E-05 2.35E-05 Pu-242 8.06E-06 5.48E-06 I-129 1.58E-06 1.07E-06

4. Source Resins 1.46E+02 Ci DAW 9.33E+00 Ci Irradiated Components 0.00E+00 Ci Columbia Generating Station 2014 Radioactive Effluent Report 20 Other (Sealed Source, Mixed Waste, & Liquid Waste) 6.02 E-03 Ci 5. Type of Container All containers shipped as Exempt, Limited Quantity, LSA, SCO or Radioactive material in IP-1, IP-2, or Type A containers (including casks) as appropriate. 6. Solidification Agent None Class B There were no Class B shipments made during calendar year 2014 Class C There were no Class C shipments made during calendar year 2014

Columbia Generating Station 21 2014 Radioactive Effluent Report Solid Radwaste Information Recommended by NRC Regulatory Guide 1.21 January -- December 2014 Solid waste shipped offsite for burial or disposal (not irradiated fuel).

1. Type of Waste Waste Stream Unit Annual Cumulative Est. Total Error % a. Spent resins, filter sludge, evaporator bottoms, etc.

m 3 Ci 1.40E+02 1.47E+02 2.5E+01%

b. Dry Active Waste

m 3 Ci 4.88E+01 9.33E+00 2.5E+01%

c. Irradiated Components

m 3 Ci 0.00E+00 0.00E+00 None

d. Other Waste (Sealed Source, mixed waste, & Liquid Waste) m 3 Ci 1.72E+01 6.02E-03 2.5E+01%
2. Estimate of major nuclide composition (by type of waste)
a. Dewatered Spent Resins -- All Classes Nuclide Curies Percent Co-60 7.29E+01 4.96E+01 Fe-55 3.47E+01 2.36E+01 Zn-65 1.80E+01 1.22E+01 Mn-54 7.99E+00 5.44E+00 Ni-63 5.18E+00 3.52E+00 Co-58 4.71E+00 3.20E+00 C-14 1.45E+00 9.86E-01 Cr-51 4.27E-01 2.90E-01 Ag-110m 3.91E-01 2.66E-01 Cs-137 3.05E-01 2.07E-01 H-3 2.30E-01 1.56E-01 Fe-59 1.19E-01 8.10E-02 Sr-89 5.29E-02 3.60E-02 Ba-140 4.86E-02 3.31E-02 Nb-95 4.32E-02 2.94E-02 I-131 5.05E-02 3.44E-02 Zr-95 3.53E-02 2.40E-02 Columbia Generating Station 2014 Radioactive Effluent Report 22 Co-57 2.37E-02 1.61E-02 Pu-241 1.69E-02 1.15E-02 La-140 1.68E-02 1.14E-02 Ni-59 1.46E-02 9.93E-03 Sr-90 5.04E-03 3.43E-03 Ce-141 3.22E-03 2.19E-03 Sb-124 1.10E-03 7.48E-04 Sb-125 5.71E-04 3.88E-04 Cm-242 4.87E-04 3.31E-04 Pu-238 3.17E-04 2.16E-04 Pu-239 2.27E-04 1.54E-04 Am-241 1.95E-04 1.33E-04 Tc-99 5.78E-05 3.93E-05 Cm-243 3.45E-05 2.35E-05 Pu-242 8.06E-06 5.48E-06 I-129 1.58E-06 1.07E-06 b. Dry Active Waste (DAW) -- All Classes Nuclide Curies Percent Co-60 3.06E-01 3.28E+01 Cr-51 1.98E-01 2.12E+01 Zn-65 1.82E-01 1.95E+01 Co-58 1.28E-01 1.37E+01 Mn-54 2.86E-02 3.07E+00 Fe-55 2.49E-02 2.67E+00 Cs-137 9.84E-03 1.05E+00 Zr-95 7.47E-03 8.01E-01 Nb-95 6.75E-03 7.23E-01 Ni-63 6.16E-03 6.60E-01 Sb-125 5.50E-03 5.89E-01 Ag-110m 3.81E-03 4.08E-01 Sb-124 2.35E-02 2.52E+00 Sr-89 1.63E-03 1.75E-01 Columbia Generating Station 23 2014 Radioactive Effluent Report H-3 2.88E-04 3.09E-02 C-14 1.45E-04 1.55E-02 Sr-90 3.49E-05 3.74E-03 Cm-242 8.87E-06 9.51E-04 Pu-238 6.28E-06 6.73E-04 Pu-239 4.51E-06 4.83E-04 Tc-99 3.43E-07 3.68E-05 I-129 9.41E-09 1.01E-06
c. Irradiated Components None d. Other Waste (Sealed Source &

Mixed Waste) Nuclide Curies Percent H-3 1.06E-04 9.97E+01 Co-60 3.54E-07 3.33E-01 Zn-65 1.52E-08 1.43E-02 Cs-137 1.35E-08 1.27E-02 Mn-54 7.70E-09 7.30E-03 Co-58 4.69E-09 4.44E-03 Cr-51 3.05E-09 2.90E-03 Fe-59 4.10E-10 4.00E-04 Nb-95 1.12E-10 1.00E-04

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 20 Tractor - Trailer US Ecology, Inc. via Public Highway P.O. Box 638 Hanford Reservation Richland, WA. 99352

1* Tractor - Trailer Perma-Fix Northwest via Public Highway 2025 Battelle Blvd Richland, WA 99352 Columbia Generating Station 2014 Radioactive Effluent Report 24 1* Truck via Public Perma-Fix of Florida, Inc. Highway 1940 NW. 67 th Place Gainesville, Florida 32653

(* After processing, portions of these shipments will be forwarded for disposal.)

Irradiated Fuel Shipments (Disposition)

Number of Shipments Mode of Transportation Destination None N/A N/A

Columbia Generating Station 25 2014 Radioactive Effluent Report

5.0 Meteorological

Data The meteorological data contained in Tabl es 5-1 through 5-11 was obtained from a meteorological tower located 762 meters (2500 feet) west of Columbia Generating Station. Data was recovered from two se ts of redundant instruments on the tower at the 10 meter (33-foot) and 75 meter (245- foot) levels. The meteorological data is a composite file generated from the aut omated data recovery systems for the calendar year 2014. Data is archived on the Energy Northwest Local Area Network.

Meteorological data recovery for 2014 was 97.9% from the 33-foot level and 98.0% from the 245-foot level. Redundant wind and temperature sensors are installed at both levels of the meteorological towe

r. Data from the two systems can be combined to permit maximum data re covery for defined date ranges.

The data in Tables 5-1 through 5-8 provi de joint frequency distributions (JFD) at the 10-meter and 75-meter levels by quarter for 2014

. These tables show the total hours at various wind speeds for each sect or and stability class. The NRC stability classes A through G and eleven wind speed categories along with the 16 wind direction sectors were used to prepare each joint frequency table. Tables 5-9 and 5-

10 provide the annual joint frequency distributions at the specified heights for 2014.

Table 5-11 provides a joint frequency distribution from the 10 meter wind

instruments during daylight hours of the gr owing season. The threshold value for daylight was chosen at solar irradiance of greater than 5 watts/m

2. This JFD table was used for Carbon-14 (14 C) dose estimates from ingestion pathways.

Wind speed is measured in miles per hour in the tables and speeds below 1.0 MPH were recorded as calms.

There are a number of atmospheric factors which affect dispersivity but which are not modeled in the CGS estimates of dis persion and deposition. Those conditions which were measured or documented at t he Hanford Meteorological Station during 2014 were snow (13.9 inches), total precip itation (6.43 inches), freezing rain (17 days), dust or blowing dust (3 days), fog (33 days), thunderstorms (8 days), and hail

(1 day).

Columbia Generating Station 2014 Radioactive Effluent Report 26 Joint Frequency Distribution Tables for 2014 Table 5-1 1st Quarter Average, 33 Ft Above Ground Level (AGL) Elevation:33Start Date:Total number of Periods:2160Period:1st QuarterStop Date:Periods of No Data Recovery:12System Percent Data Recovery:99.4%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0000000000000000 02.24.5 0000000000000000 04.56.7 0000000000000000 06.78.9 0000000000000000 08.911.2 0000000000000000 011.213.4 0000000000000000 013.417.9 0000000000000000 017.922.4 0000000003000000 322.429.1 0000000000100310 529.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS00000000031003108Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0000000000000000 02.24.5 0000000000000001 14.56.7 1000000000000001 26.78.9 3100000000000001 58.911.2 0000000000000000 011.213.4 0000000000000000 013.417.9 1000000011000000 317.922.4 0000000003100000 422.429.1 0000000002000100 329.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS510000001610010318Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 1000000000000001 22.24.5 2200000000000101 64.56.7 5100000000000013 106.78.9 6100000000000122 128.911.2 0000000141010012 1011.213.4 3000000110001102 9 1 3.417.9 7000000141000101 1517.922.4 0000000022512000 1222.429.1 0000000003303100 1029.140.3 0000000001001000 240.390.0 0000000000000000 0TOTALS244000003118827541288Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 9555357752143466 772.24.519873131517177715825261694.56.718133201915111214920461556.78.91041002613102262424351218.911.21131000614861254202010111.213.462000066911153315 5813.417.9173100035810282111011 9117.922.430000000516764501 4722.429.100000000014682800 3829.140.3 0000000006300000 940.390.0 0000000000000000 0TOTALS9338181041152777365323732561081608661/1/20144/1/2014 Columbia Generating Station 27 2014 Radioactive Effluent Report Table 5-1 1st Quarter Averag e, 33 Ft AGL (Continued) Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.22612133426863336 592.24.51291001612141011912913171364.56.750300331214743391010 866.78.9441004137694364115 818.911.220010041689414355 6211.213.4312002221511410323 5113.417.90100000223251543810 8217.922.400000001124821210 4022.429.10000000016311000 1229.140.30000000000000000 040.390.00000000000000000 0TOTALS282183113315684107613033414646609Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.24201121503352437 432.24.5462111137424291013 704.56.72361000585332583 546.78.900100021273023440 388.911.200000021072001101 2411.213.40010000646002400 2313.417.90000000381000100 1317.922.40000000031000000 422.429.10000000110000000 229.140.30000000001000000 140.390.00000000000000000 0TOTALS101110323645452681412282524272Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.22520022342633254 452.24.5108201125633365159 794.56.70200000773310048 356.78.90000003841010120 208.911.20000001801001010 1211.213.40000000110000000 213.417.90000000101000000 2 17.9 22.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS1215401383322111281082721195Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2181888512131911131818111317242262.24.5473312436243744242317253263674614.56.73119123041239401612892343713426.78.92310300624402715612111443432778.911.213311001349271954118272820911.213.4123300281630185281152014313.417.9254100031244391712521111220617.922.4300000011149219771111022.429.10000000122513961310 7029.140.30000000008301000 1240.390.00000000000000000 0TOTALS1729040168309721423622612391941422112662056Periods of Calm while in Stability Class:ABCDEFGTotal0003133151392

Columbia Generating Station 2014 Radioactive Effluent Report 28Table 5-2 1st Quarter Average, 245 Ft AGL Elevation:245Start Date:Total number of Periods:2160Period:1st QuarterStop Date:Periods of No Data Recovery:10System Percent Data Recovery:99.5%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0000000000000000 02.24.5 0000000000000000 04.56.7 0000000000000000 06.78.9 0000000000000000 08.911.2 0000000000000000 011.213.4 0000000000000000 013.417.9 0000000000000000 017.922.4 0000000001000000 122.429.1 0000000002000000 229.140.3 0000000000100310 540.390.0 0000000000000000 0TOTALS00000000031003108Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 1000000000000000 12.24.5 0000000000000000 04.56.7 1000000000000001 26.78.9 4100000000000000 58.911.2 0000000000000000 011.213.4 0000000000000000 013.417.9 1000000000000000 117.922.4 0000000001100000 222.429.1 0000000003200100 629.140.3 0000000000100000 140.390.0 0000000000000000 0TOTALS710000000440010118Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0100000000000001 22.24.5 3110000000000100 64.56.7 6110000000000001 96.78.9 5000000000000134 138.911.2 0000000020010001 411.213.4 2000000051000102 11 1 3.417.9 9000000131001201 1817.922.4 0000000002000000 222.429.1 0000000004515000 1529.140.3 0000000000412100 840.390.0 0000000000000000 0TOTALS253200001108938631088Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2811233446104204427 742.24.519834139111310323820261434.56.71513720291693312423321416.78.91160000389312032219 878.911.2154000031112225431026 9711.213.472000077441223821 6813.417.92132000431157235823 9717.922.4 4320001146265663 4922.429.111000000214121151000 5629.140.300000000091251800 3540.390.0 0000000001600000 7TOTALS10151169494063746151362954991578541/1/20144/1/2014 Columbia Generating Station 29 2014 Radioactive Effluent Report Table 5-2 1st Quarter Averag e, 245 Ft AGL (Continued)

Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 5303021932301457 482.24.5 9452102769366798 844.56.788600156114433472 726.78.9 4431103636322571 518.911.2 8101117753533194 5911.213.4 6130014366301666 5213.417.95130012317121327326 7717.922.41200000114241541540 7122.429.1000000004232160920 6529.140.300000000018341100 2740.390.0 0000000001000000 1TOTALS462420736244269108733025455134607Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 1100020102231312 192.24.5 2820141932431624 524.56.765311243243104113 536.78.9 2511002122101323 268.911.2 1031003533000043 2611.213.4 0001002543001210 1913.417.9002000354103031201 4317.922.4 0000000268301110 2222.429.1 0000000203100500 1129.140.3 0000000012000000 340.390.0 0000000001000000 1TOTALS121911428153325401778361226275Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 3302011114030111 222.24.5 5342124288041023 494.56.7 8541012282110136 456.78.9 1010003244302406 308.911.2 1010005120220012 1711.213.4 0000012151002000 1213.417.9 0000002533000000 1317.922.4 0000000010201400 822.429.1 0000000100000000 129.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS18111051519153222810610718197Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2181928396171412766129181662.24.5382415849162930291015112233413344.56.74432214162027301311651334553226.78.927165210111718158451634332128.911.22554211182424891174243620311.213.415331021516241542612152916213.417.93647001111738312341422103124917.922.4552000142542231081611315522.429.111000003649411810252015629.140.300000000129211041310 7940.390.0 0000000003600000 9TOTALS209109592510289815421024616386761551732462047Periods of Calm while in Stability Class:ABCDEFGTotal00045351211103

Columbia Generating Station 2014 Radioactive Effluent Report 30Table 5-3 2nd Quarter Average, 33 Ft AGL Elevation:33Start Date:Total number of Periods:2184Period:2nd QuarterStop Date:Periods of No Data Recovery:17System Percent Data Recovery:Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20000000000000000 02.24.50000000000000000 04.56.70100000000000001 26.78.91010000000000000 28.911.21000000310000005 1011.213.41200000231000000 913.417.90120000090310000 1617.922.40000000010000000 122.429.10000000000100010 229.140.30000000000000000 040.390.00000000000000000 0TOTALS3430000514141001642Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21100000000000000 22.24.52410010000000003 114.56.78400000100011002 176.78.90210000150000021 128.911.22300001631100101 1911.213.42210000292000000 1813.417.900100001108120202 2717.922.40000000001600310 1122.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS151640011112712831639117Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21210000000000112 82.24.55774133104122043 474.56.78763014852101632 576.78.9275100413146322260 678.911.21300100568430131 3611.213.41210000238413214 32 13.4 17.920000000271031340 3217.922.40000000000741540 2122.429.10000000002000320 729.140.30000000000000000 040.390.00000000000000000 0TOTALS20282082411293037301510232812307Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.23233331332221101 332.24.549874316191089683501194.56.73612225162013107574221166.78.933523321151389993331128.911.24110231113148756940 8811.213.401100134137394442 5613.417.9100000001251215913110 7817.922.400000000044921570 4122.429.10000000000220630 1329.140.30000000000000000 040.390.00000000000000000 0TOTALS18223014141868747852556246583986564/1/20147/1/201499.2%

Columbia Generating Station 31 2014 Radioactive Effluent Report Table 5-3 2nd Quarter Averag e, 33 Ft AGL (Continued) Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20111002212212206 232.24.5121120371093510646 704.56.7851102410158886894 976.78.92110011417711698774 958.911.2210000718675212309410311.213.4000000445536823142 7413.417.920000000574273070 6417.922.40000000014230420 1622.429.10000000000010000 129.140.30000000000000000 040.390.00000000000000000 0TOTALS15104323345850533337531105226543Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20512003813151130 342.24.537420018164015738 694.56.76310006152012325115 806.78.910300051396323280 558.911.20001000410012431 1711.213.40000001000001400 613.417.90000000000001200 317.922.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS101595001648471461215252814264Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.222320021154001132 382.24.586500058751010212 604.56.7264000413122010059 586.78.90030002860000101 218.911.20010001520000000 911.213.40000000010000000 113.417.90000000000000000 0 17.9 22.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS1214162001445331111221024187Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.27139833824101158567111382.24.52335261477284343301414261618323764.56.7353224628346765231818172330254276.78.99131933446675431212222152693648.911.210821332054332417112045191228211.213.447300181434231016163319819613.417.95130000138273023185022222017.922.400000000291916327140 9022.429.10000000002330960 2329.140.30000000000000000 040.390.00000000000000000 0TOTALS9310986321826144270279180137131127224161992116Periods of Calm while in Stability Class:ABCDEFGTotal0021510131151

Columbia Generating Station 2014 Radioactive Effluent Report 32Table 5-4 2nd Quarter Average, 245 Ft AGL Elevation:245Start Date:Total number of Periods:2184Period:2nd QuarterStop Date:Periods of No Data Recovery:22System Percent Data Recovery:99.0%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20000000000000000 02.24.50000000000000000 04.56.70100000000000001 26.78.90101000000000000 28.911.21000000010000000 211.213.41100000130000002 813.417.91200000132000001 1017.922.40030000032110000 1022.429.10000000012310010 829.140.30000000000000000 040.390.00000000000000000 0TOTALS3531000211642001442Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20000000000000000 02.24.54110100000000001 84.56.74220000100010000 106.78.93401000010001020 128.911.25210000161000100 1711.213.41000000051100000 813.417.905100000159100003 3417.922.40011000015210120 1422.429.10000000011510030 1129.140.30000000000200000 240.390.00000000000000000 0TOTALS171462100229171131274116Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21001000000000110 42.24.55444121200011122 304.56.74437012514102414 436.78.93554003852221191 518.911.207301006128220250 4811.213.42120010497512413 42 13.4 17.93220000155542021 3217.922.40000000007650250 2522.429.10000000000753460 2529.140.30000000000310020 640.390.00000000000000000 0TOTALS18231916246263233312111193411306Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.22220201331311002 232.24.50332721793333271 564.56.735961411111351028420 946.78.93534151310155755534 938.911.24290361313811675651 9911.213.41211021646121015211 6513.417.9111201659217139872 9317.922.4010000005581351170 5522.429.10000000015513820171 7029.140.30000000001082110 1340.390.00000000000000000 0TOTALS142128151420615369695966515950126614/1/20147/1/2014 Columbia Generating Station 33 2014 Radioactive Effluent Report Table 5-4 2nd Quarter Averag e, 245 Ft AGL (Continued) Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20000001020002000 52.24.50002001141730222 254.56.74012101002225523 306.78.91300001565667621 498.911.253210045670776112 6611.213.411100243941036651 5613.417.920211098914911103118212717.922.4010000171683740183 9522.429.10200000006105837111 8029.140.30000000003131710 1640.390.00000000000010000 1TOTALS13106622222937485344531407015550Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21010301121001000 112.24.52302012336541221 374.56.73312100144534202 356.78.94300011435363716 478.911.21301002457321341 3711.213.43020005182112291 3713.417.901100011650011471 3817.922.40000101100011660 1722.429.100000000000031110 1529.140.30000000000000000 040.390.00000000000000000 0TOTALS1413555213163130171717473012274Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20010000000100101 42.24.51201201233122301 244.56.71420112256432402 396.78.94232001245102022 308.911.235210027108001011 4111.213.43430002531000017 2913.417.90021001543000112 20 17.9 22.40020301002000100 922.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS1217155611023292875710516196Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.24241503472414213 472.24.51213811115615191316137101381804.56.7191918174616202321221121195122536.78.91823111216192934221919191919142848.911.2192217346213648421118141826531011.213.41299105271843272761514171524513.417.971194111721515922282254351235417.922.40261403810272524136138322522.429.1020000003143025227239220929.140.300000000046123840 3740.390.00000000000010000 1TOTALS9110382503029112151238231182158140277197742145Periods of Calm while in Stability Class:ABCDEFGTotal001833217 Columbia Generating Station 2014 Radioactive Effluent Report 34Table 5-5 3rd Quarter Average, 33 Ft AGL Elevation:33Start Date:Total number of Periods:2208Period:3rd QuarterStop Date:Periods of No Data Recovery:130System Percent Data Recovery:94.1%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 2110010010000000 62.24.5 3266211000010001 234.56.7 4574202131101002 336.78.9131252010400000003 408.911.2 0700002210000001 1311.213.4 0200001010000000 413.417.9 0000000072100010 1117.922.4 0000000003000000 322.429.1 0000000000000010 129.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS222919124367136211027134Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0000000001000010 22.24.5 4444613002000030 314.56.7 1554532200000013 316.78.9 9132200211000000 218.911.2 2001022210000002 1211.213.4 2001010012101000 913.417.9 0100000001121003 917.922.4 0000000002000000 222.429.1 0000000001010010 329.140.3 0000000001000000 140.390.0 0000000000000000 0TOTALS1811121213776311232068121Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 1542011100000000 152.24.5 9422119431111115 464.56.795743410231010003 526.78.9 8423336455432134 608.911.2 4141114254601026 4211.213.4 3122011163111105 29 1 3.417.9 0100000031111120 1117.922.4 0000000000000310 422.429.1 0000000000000000 029.140.3 0000000001000000 140.390.0 0000000000000000 0TOTALS342121148113114251613767923260Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 4201426511110102 312.24.57851352327966812671244.56.7710433418171475452451126.78.9650620815117101557 798.911.2101201141083131642 5711.213.4 3200000476030274 3813.417.9230100102431314173 5417.922.400000000021007150 2522.429.1 0000000000010350 929.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS393111121312607852361821114263305297/1/201410/1/2014 Columbia Generating Station 35 2014 Radioactive Effluent Report Table 5-5 3rd Quarter Averag e, 33 Ft AGL (Continued) Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21111013334201024 272.24.56734448539541587 834.56.7933013885523641311 846.78.92130101293144361412 758.911.2220000223000312135 4411.213.420000031140021314 3113.417.922000000110011481 3017.922.40000000000000200 222.429.10000000000000100 129.140.30000000000000000 040.390.00000000000000000 0TOTALS24161056836281924131117575944377Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.22376143334130023 452.24.5117322031295124288 794.56.7988000112521720168151216.78.92021008201151124145 768.911.20000003822100211 2011.213.40000000000000100 113.417.90000000000000000 017.922.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS24182093428684623667153332342Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.24983324544320053 592.24.51721142021435131136 844.56.7586100013400001913 606.78.92210002850000541 308.911.20000001110100000 411.213.40000000000000000 013.417.90000000001000000 1 17.9 22.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS284029634831171055172123238Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21421211381117171214761110121852.24.557533721181448522728141981129344704.56.744444016141451685021108131335524936.78.942251614843662361910882140323818.911.218116224182721993520201719211.213.410523025616152441781311213.417.94701001013106462928711617.922.4000000000710012160 3622.429.10000000001020470 1429.140.30000000002000000 240.390.00000000000000000 0TOTALS1891661227050491762321751265954451281931672001Periods of Calm while in Stability Class:ABCDEFGTotal0121211193277

Columbia Generating Station 2014 Radioactive Effluent Report 36Table 5-6 3rd Quarter Average, 245 Ft AGL Elevation:245Start Date:Total number of Periods:2208Period:3rd QuarterStop Date:Periods of No Data Recovery:128System Percent Data Recovery:94.2%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20100000010000000 22.24.51023011100000002 114.56.72643210021000000 216.78.95566311102010001 328.911.21816100120101000 2211.213.42601001040000000 1413.417.95800001134100010 2417.922.40000000032000000 522.429.10000000001000010 229.140.30000000000000000 040.390.00000000000000000 0TOTALS1634131963441510211023133Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20000000000000000 02.24.51012201011000031 134.56.72174642011000011 306.78.90532701010000000 198.911.22210121110000000 1111.213.45212001042100000 1813.417.96111012110122002 2117.922.40000000000100001 222.429.10000000003000010 429.140.30000000001010000 240.390.00000000000100000 1TOTALS161114111678298432055121Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21030001000000001 62.24.56571104321000011 324.56.79145147502021103 456.78.98135313333311121 428.911.27444165134140021 4711.213.47121123365510024 43 13.4 17.93122001236221201 2817.922.40010001002031120 1122.429.10000000001200110 529.140.30000000000000010 140.390.00000000000100000 1TOTALS41132618713251717241413461112261Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.23230112660121030 312.24.5463232111282241246 724.56.73712031017149463204 856.78.9861315121388123245 828.911.2463533312133431411 6911.213.45310111494321532 4513.417.966100022777313104 5917.922.41100100024231793 3422.429.1200000001121015180 4029.140.300000000010104110 1740.390.00000000000000000 0TOTALS363713121015416668392627124463255347/1/201410/1/2014 Columbia Generating Station 37 2014 Radioactive Effluent Report Table 5-6 3rd Quarter Average, 245 Ft AGL (Continued)

Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20102030200000100 92.24.52334313222441344 454.56.704201231031123234 416.78.94300114325026553 448.911.24301118222022566 4511.213.44231003222123573 4013.417.9730000175411313198 7217.922.4422000021300012147 4722.429.1001000001110019104 3729.140.30000000000000610 740.390.00000000000000000 0TOTALS2521118682230182081318716939387Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.22301031002000100 132.24.54135322724402226 494.56.71113122988125246 566.78.96452015386341457 648.911.231010079968323711 7011.213.43111000387203335 4013.417.962000033381104913 5317.922.40000000021000243 1222.429.10000000010000300 429.140.30000000000000000 040.390.00000000000000000 0TOTALS251310134820344142191013243451361Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21211012324201011 222.24.54673311733612222 534.56.74335213954530107 556.78.99230008464200029 498.911.27440001543002158 4411.213.41100001121000068 2113.417.91010000301000115 13 17.9 22.40000000000021010 422.429.10000000002000021 529.140.30000000000000000 040.390.00000000000000000 0TOTALS27181995316322222156652041266Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.279741861196322242 832.24.522212620157233218131696916222754.56.72123222213172750332611151288253336.78.94026211815934272828910111218263328.911.228281317712253134181412813212730811.213.42716862310133521125713212222113.417.93421530110192230139723403327017.922.45330101281238322301411522.429.1201000003951038335 9729.140.3000000000202010130 2740.390.00000000000200000 2TOTALS1861471069054571361851901658873561502041762063Periods of Calm while in Stability Class:ABCDEFGTotal112810417 Columbia Generating Station 2014 Radioactive Effluent Report 38Table 5-7 4th Quarter Average, 33 Ft AGL Elevation:33Start Date:Total number of Periods:2208Period:4th QuarterStop Date:Periods of No Data Recovery:24System Percent Data Recovery:98.9%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0000000000000000 02.24.5 0000000000000000 04.56.7 0000000000010000 16.78.9 0000000000000000 08.911.2 0000000000000000 011.213.4 0000000000000000 013.417.9 0000000000000000 017.922.4 0000000000000000 022.429.1 0000000000000000 029.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS00000000000100001Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0000000000000000 02.24.5 0000000000000000 04.56.7 0000000000000000 06.78.9 0000000000000010 18.911.2 0000000000000000 011.213.4 0000000000000000 013.417.9 0000000000000000 017.922.4 0000000000000000 022.429.1 0000000000000000 029.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS00000000000000101Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0000000000000000 02.24.5 0100000000001002 44.56.7 3000000000000003 66.78.9 0100000010000000 28.911.2 0000000100000000 111.213.4 0000000000000000 0 1 3.417.9 0000000030000000 317.922.4 0000000002000000 222.429.1 0100000000010000 229.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS330000014201100520Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.210441434543220939 672.24.514148422717104245810161274.56.785810110131012216145 876.78.9252000510640123129 618.911.2 2520003974210199 5411.213.4 1500001265010317 3213.417.9 3300000477417314 4417.922.4 0700000036002000 1822.429.1 2310000012100210 1329.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS4251256663060543613121735515950310/1/20141/1/2015 Columbia Generating Station 39 2014 Radioactive Effluent Report Table 5-7 4th Quarter Averag e, 33 Ft AGL (Continued) Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.29534322225361111314 852.24.5119712281215161110152136242004.56.73831006281765531527111386.78.92200031129134356131711098.911.22020005266240310105 7511.213.41100002997404621 4613.417.999000015139449300 6617.922.473100001818531300 5022.429.101100000010330000 1829.140.30000000004000000 440.390.00000000000000000 0TOTALS4438176573511283814236428210556791Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.28650015564757787 812.24.51356102514101489141113101354.56.72550013171874211317151106.78.911200212212132206143 818.911.2001000514340211100 4111.213.40000000331001010 913.417.90000000043002100 1017.922.40000000100000000 122.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS24171910619765646212026396335468Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.28642004512432625 542.24.59137100513432167156 924.56.7112000211314011115 436.78.9003000112861001101 438.911.20000000633101000 1411.213.40000000112000000 413.417.90000000000000000 0 17.9 22.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS1820163001248201712410153817250Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2352116776151713141616103326352872.24.5474228746255639372324414774585584.56.717191820221694815151063569393856.78.9597005187340276882354142978.911.24550001356191373512291418511.213.42600003151915415948 9113.417.912120000192719851871412317.922.47101000021126533300 7122.429.125200000112440210 3329.140.30000000004000000 440.390.00000000000000000 0TOTALS13112977161119962972171828874961712581722034Periods of Calm while in Stability Class:ABCDEFGTotal00034544022150

Columbia Generating Station 2014 Radioactive Effluent Report 40Table 5-8 4th Quarter Average, 245 Ft AGL Elevation:245Start Date:Total number of Periods:2208Period:4th QuarterStop Date:Periods of No Data Recovery:18System Percent Data Recovery:99.2%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20000000000000000 02.24.50000000000000000 04.56.70000000001000000 16.78.90000000000000000 08.911.20000000000000000 011.213.40000000000000000 013.417.90000000000000000 017.922.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS00000000010000001Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20000000000000000 02.24.50000000000000000 04.56.70000000000000000 06.78.90000000000000100 18.911.20000000000000000 011.213.40000000000000000 013.417.90000000000000000 017.922.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS00000000000001001Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20000000000000000 02.24.51100000000000001 34.56.73000000000001002 66.78.91010000010000000 38.911.20000000000000000 011.213.40000000100000000 1 13.4 17.90000000011000000 217.922.40000000002000000 222.429.10010000000101000 329.140.30000000000000000 040.390.00000000000000000 0TOTALS512000012310200320Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.210654414762222156 672.24.513148124511133525117161204.56.763103017131031101118 786.78.933310056801202512 518.911.24520000667111284 4711.213.42230000356300047 3513.417.972300011612203268 5317.922.41210000034513401 2522.429.10540000009301100 2329.140.30410000002200210 1240.390.00000000000000000 0TOTALS464640966224757482591526476251110/1/20141/1/2015 Columbia Generating Station 41 2014 Radioactive Effluent Report Table 5-8 4th Quarter Averag e, 245 Ft AGL (Continued) Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2421323612160441110 602.24.5688331514989910141191274.56.7494400710103527718191096.78.915420131310912212018 928.911.20220002813123168239 8911.213.4103000191673216153 6713.417.9622000218161131319103 9617.922.4291000139155421230 6622.429.10152000003221047910 7329.140.300210000016832300 3540.390.00000000003100000 4TOTALS24522913552776881075428448311271818Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21122304245151431 392.24.58646234884457727 854.56.747551021175544545 746.78.937120046987329127 808.911.2513000591043063511 6511.213.411100049836024811 5813.417.9011000267700171212 5617.922.40000002126002225 2222.429.10000000007101100 1029.140.30000000100001000 240.390.00000000000000000 0TOTALS222417156327535549271727424859491Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.23423031202220222 302.24.55144325791456453 684.56.77177006696212204 606.78.91000003292251022 298.911.21003001243230006 2511.213.43010000153042002 2113.417.92000001340211434 25 17.9 22.40000000102100200 622.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS22614173517244019152112141223264Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.218131012971512121011971121191962.24.5333024141010194039162221283625364034.56.7242026191122403618138141533383286.78.9915950115273719111251339392568.911.210873008253326951313363022611.213.47380005233419126510272318213.417.91556000628343172832312723217.922.431120003514291157205612122.429.102070000033815410111010929.140.3043100010181033510 4940.390.00000000003100000 4TOTALS11912910254201993201242227122751001662192182106Periods of Calm while in Stability Class:ABCDEFGTotal000263317884

Columbia Generating Station 2014 Radioactive Effluent Report 42Table 5-9 Year 2014, 33 Ft AGL Elevation:33Start Date:Total number of Periods:8760Period:Annual 2014Stop Date:Periods of No Data Recovery:183System Percent Data Recovery:97.9%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 2110010010000000 62.24.5 3266211000010001 234.56.7 4674202131111003 366.78.9141262010400000003 428.911.2 1700002520000006 2311.213.4 1400001241000000 1313.417.901200000162410010 2717.922.4 0000000016000000 722.429.1 0000000000200330 829.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS253322124361227107313413185Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 1100000001000010 42.24.5 6854623002000034 434.56.710954532300011016 506.78.912442200361000032 398.911.2 4301023841100103 3111.213.442110102104101000 2713.417.9111000011110241205 3917.922.4 0000000006700310 1722.429.1 0000000003010110 629.140.3 0000000001000000 140.390.0 0000000000000000 0TOTALS382816121388173129116371020257Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 3752011100000113 252.24.5161496241253523425111034.56.725131373514108311164111256.78.9161374331017201175441161418.911.25441214915131041169 8911.213.47332011410115254111 70 1 3.417.9910000011291142561 6117.922.400000000241253850 3922.429.1 0100000005313420 1929.140.3 0000000002001000 340.390.0 0000000000000000 0TOTALS81564122101542477063512524354152675Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.22613121014131820138694159182082.24.5443928151013618046252419192146495394.56.73634278511536548191612172140584706.78.921178855405340211216141544543738.911.2271060342446372111111220373130011.213.41010100110163519414912152818413.417.9239110049292621252141391826717.922.437000000828121582722113122.429.12310000011691121990 7329.140.3 0000000006300000 940.390.0 0000000000000000 0TOTALS1921428442374721028925718911813210619126125725541/1/20141/1/2015 Columbia Generating Station 43 2014 Radioactive Effluent Report Table 5-9 Year 2014, 33 Ft AGL (Continued) Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2121368461011817151371618301942.24.5302712687253642443028384161544894.56.7251610218215851261919183659364056.78.91085018506229251721233049223608.911.2832100186223181332255371928411.213.4622002111630271171445191020213.417.9131200001742422310205516124217.922.47310000210461582113010822.429.101100000116651100 3229.140.30000000004000000 440.390.00000000000000000 0TOTALS11185391714311362542362651491141452902621722320Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2141613927122110141218101216172032.24.5312515633103742271116252934393534.56.71919201012062672011862944383656.78.941810216673927678164082508.911.20011001036138134814310211.213.40010001977004910 3913.417.900000003124003400 2617.922.40000000131000000 522.429.10000000110000000 229.140.30000000001000000 140.390.00000000000000000 0TOTALS68615818513692371941094152601071491051346Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2162217734122414121386915141962.24.54448283131330201677141335333154.56.781712100644266721229351966.78.922700083623711081631148.911.200100032064202010 3911.213.40000000232000000 713.417.90000000102000000 3 17.9 22.40000000000000000 022.429.10000000000000000 029.140.30000000000000000 040.390.00000000000000000 0TOTALS7089651147421579249301823329685870Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2747354362332537746524648275360828362.24.5174163103463233125188153119747410010618419118654.56.712711494271628118243203755544459417718716476.78.979574517111912424215792435049731639813198.911.2452714457641861006538214185957186811.213.4282183052451997121233370364954213.417.94624410052212295614447107622566517.922.4101010000324914628134931130722.429.125200001340201862815014029.140.300000000014301000 1840.390.00000000000000000 0TOTALS5854943251348712451310139077144073503626658237048207Periods of Calm while in Stability Class:ABCDEFGTotal014921088778370

Columbia Generating Station 2014 Radioactive Effluent Report 44Table 5-10 Year 2014, 245 Ft AGL Elevation:245Start Date:Total number of Periods:8760Period:Annual 2014Stop Date:Periods of No Data Recovery:178System Percent Data Recovery:98.0%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.20100000010000000 22.24.51023011100000002 114.56.72743210022000001 246.78.95667311102010001 348.911.22816100130101000 2411.213.43701001170000002 2213.417.961000001266100011 3417.922.40030000065110000 1622.429.10000000015310020 1229.140.30000000000100310 540.390.00000000000000000 0TOTALS1939162063462620731347184Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21000000000000000 12.24.55122301011000032 214.56.77394642111010012 426.78.971033701020001120 378.911.27420121271000100 2811.213.46212001093200000 2613.417.976210121169222005 5617.922.40011000016410121 1822.429.10000000017710140 2129.140.30000000001310000 540.390.00000000000100000 1TOTALS40262013177843829196341210256Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.22131001000000112 122.24.51511125225521011234 714.56.7226812159101612451101036.78.917699316119553231461098.911.27117426571712370272 9911.213.411241133820131022539 97 13.4 17.91534200141213764423 8017.922.400100010013681370 4022.429.100100000051569570 4829.140.30000000000722130 1540.390.00000000000100000 1TOTALS8940493491731456168553725314836675Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.223211271061122257858510151952.24.536311791311264143181311122338493914.56.727282713110375746201810131136443986.78.925207821033374016101181234403138.911.22717145691942392313161115243231211.213.4159511324182426175810163121313.417.9351272011311334523181618313730217.922.46730101114191723142822716322.429.1364000004292225144635118929.140.3041000000131414315130 7740.390.00000000001600000 7TOTALS1971559745345016422926821716113810718325925625601/1/20141/1/2015 Columbia Generating Station 45 2014 Radioactive Effluent Report Table 5-10 Year 2014, 245 Ft AGL (Continued) Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.296182881273907916171222.24.51715161172112421202322172626232814.56.716211362316262410129181830282526.78.910157322112721251012171734232368.911.21794322212226248131820492125911.213.412410103121733191771123331321513.417.920671111436474126152366491937217.922.47143000213254828111069391027922.429.10173000008524215157424525529.140.300210000037121041720 8540.390.0 0000000004110000 6TOTALS10810766341621951772122831881151403393021592362Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.255336564610383843 822.24.516189136109271616171211178182234.56.714161011448242121141013139262186.78.91519750212142221141372320232178.911.210563001727272014599202619811.213.47242001118281591811211715413.417.9644000915203041537282719017.922.400001034101531411138 7322.429.1000000021102042010 4029.140.3 0000000112001000 540.390.0 0000000001000000 1TOTALS736943371721751361521618051651491241481401Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.279460546310551445 782.24.51512151095111823151112119991944.56.7201316133313192718128483191996.78.915472001510231585546191388.911.212974009152014453171712711.213.4754001581560440717 8313.417.93031004161172116511 7117.922.4 0020301114322710 2722.429.1 0000000102000021 629.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS795258361514629412391454231394498923Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2474323251824304442302518192735424922.24.5105887353403164116106716458527787107 11924.56.7108948762193085137122785740525580130 12366.78.9948046371716791001178447454060110112 10848.911.282634125121972116139944346424810798 104711.213.4613128821057701368255193349808981013.417.99241277134485145151654351131116103 110517.922.413211315081957110624731119842661622.429.13238000031511091484214675757129.140.3043100011533727103619019240.390.0 0000000006910000 16TOTALS6054883492191141334396918808695553923727487937148361Periods of Calm while in Stability Class:ABCDEFGTotal11387723225221

Columbia Generating Station 2014 Radioactive Effluent Report 46Table 5-11 Year 2014 Growing Season - Daylight Hours (Solar Irradiance > 5 watts/m 2; 33 Ft AGL)

Elevation:33Start Date:Total number of Periods:2643Period:Growing SeasonStop Date:Periods of No Data Recovery:96Daylight HoursSystem Percent Data Recovery:96.4%Stability Class:AWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 2110010010000000 62.24.5 3266211000010001 234.56.7 4674202131111003 366.78.9141262010400000003 428.911.2 0700002420000003 1811.213.4 1400001241000000 1313.417.901200000162410010 2717.922.4 0000000013000000 422.429.1 0000000000100020 329.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS24332212436112776310310172Stability Class:BWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 1100000001000010 42.24.5 6854623002000033 424.56.7 9954532300011015 486.78.9 9242200361000031 338.911.2 3301023841100103 3011.213.442110102104101000 2713.417.901100001107241205 3417.922.4 0000000003600310 1322.429.1 0000000001010010 329.140.3 0000000001000000 140.390.0 0000000000000000 0TOTALS322616121388173021106361017235Stability Class:CWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 2652011100000112 222.24.51412962412535234158 954.56.7191213735149831114261086.78.9109643310161897533541158.911.2434121481110931046 7111.213.4 3332011389324315 51 1 3.417.9 0100000086932360 3817.922.4 0000000000741650 2322.429.1 0000000002010310 729.140.3 0000000001000000 140.390.0 0000000000000000 0TOTALS52464022101542425645382216243031531Stability Class:DWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.211654768832331204 732.24.511241598103850171412118410132544.56.78141665936392814121185572236.78.9864853292922158896791768.911.2121303414252612886123213911.213.43310013819101103352 7213.417.923010010108129914193 9117.922.400000000174937120 4322.429.100000000013301080 2529.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS5557442828331291591268363724763694010964/15/201410/15/2014

Columbia Generating Station 47 2014 Radioactive Effluent Report Table 5-11 Year 2014 Growing Season - Daylight Hours (Continued) (Solar Irradiance > 5 watts/m 2; 33 Ft AGL)

Stability Class:EWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0213115221120101 232.24.5 0413627645134123 524.56.7944113111694022432 756.78.911301120934100134 528.911.2 1000008432000230 2311.213.4 0000004121020100 1113.417.9 0000000241100100 917.922.4 0000000000100000 122.429.1 0000000000000100 129.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS1111979755402718596121110247Stability Class:FWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 0434100421011013 252.24.541231011173111144 454.56.7116000413120000011 396.78.9 0031004422000021 198.911.2 0000003211000000 711.213.4 0000000000000000 013.417.9 0000000000001000 117.922.4 0000000000000000 022.429.1 0000000000000000 029.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS56148201234247123189136Stability Class:GWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.2 3220001440000001 172.24.5 2540001311101004 234.56.7 0031003340000001 156.78.9 0000000230000000 58.911.2 0000000100000000 111.213.4 0000000000000000 013.417.9 0000000000000000 017.922.4 0000000000000000 022.429.1 0000000000000000 029.140.3 0000000000000000 040.390.0 0000000000000000 0TOTALS57910051312110100661Stability Class:AllWind SpeedMinMaxNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL1.02.21922171399151912546243111702.24.540564231251963753230171918724365344.56.7504654231620728464221416131312255446.78.942302617118636754311613121020224428.911.220147257345247261811715101428911.213.4111253039164325514876717413.417.92631001348242817132026820017.922.4000000002131813416180 8422.429.1000000000445014120 3929.140.3 0000000002000000 240.390.0 0000000000000000 0TOTALS184186154906666257316302182124114771061311232478Periods of Calm while in Stability Class:ABCDEFGTotal0142911141069

Columbia Generating Station 2014 Radioactive Effluent Report 486.0 DOSE ASSESSMENT -- IMPACT ON MAN Liquid Effluents - There were no liquid di scharges from the radwaste processing system to the Columbia River during calendar year 2014. As such, the liquid dose reporting tables (Tables 6-1 through 6-4) described in the implementing procedure have been excluded from this report.

Gaseous Effluents - The NRC GASPAR II computer code was used to calculate doses at and beyond the site boundary using quarterly and annual meteorological

data and site-specific variables as requi red and defined in the ODCM. Table 6-5 shows the highest calculated doses at the site boundary and beyond the site

boundary (the potentially highest exposed MOP identified in the 2014 CGS land use census). Table 6-6 provides the populati on collective dose within a 50-mile radius.

These values were obtained from the As Low As Reasonably Achievable (ALARA)

annual integrated population dose summary (in person-rem) of the GASPAR computer code output file. Table 6-6 al so provides the annual average individual doses associated with each pathway. These values were obtained by dividing the

ALARA integrated dose (person-rem) by the 2010 US Census 50-mile population (448,383) and converting to mrem.

During the growing season, Columbia Gener ating Station conducts a five-mile land use census to determine the locations of nearest residents, gardens, and milk animals or other livestock out to five miles in each sector. The 2014 Land Use Census identified one broad leaf vegetable garden but no milk animals within the 5-

mile radius. Cattle and horses were obser ved within 5-miles. As substantial commercial fruit orchards and corn crops were observed in all eastern sectors with

residents, it was assumed that these crops were being consumed by the residents.

The GASPAR code consumption rates were revised to reflect these differences. Dose to Onsite Members of the Public The term "Member of the Public" includes all persons who are not occupationally associated with the plant. This category does not include employees of the utility, its contractors or vendors. Also excluded from this category are persons who enter the site to service equipment or to make deliveries. This category does include persons who use portions of the site for recreat ional, occupational or other purposes not

associated with the plant.

Dose was evaluated to Members of the P ublic within the owner controlled area as well as beyond the site boundary. For those within the site boundary, the estimates

included visitors to either the plant or the firing range as well as those that worked at the Industrial Development area in t he E and ESE sectors and at the DOE 618-11 burial site in the W and WNW sectors. The maximum dose from gaseous effluents

to these individuals was estimated assumi ng exposure to the plume, inhalation, and ground deposition pathways.

The following table (6.0) shows estimated dose to Members of the Public from gaseous effluents and direct radiation exposure within the site boundary of Columbia Generating Station for the tota l indicated hours spent at each location.

Columbia Generating Station 49 2014 Radioactive Effluent Report Table 6.0; Dose to Members of the Public within the Site Boundary LocationHours SpentTotal Body Dose (mrem)Thyroid Dose (mrem)Highest Other Organ Dose (mrem)Beta Air Dose (mrad)Gamma Air Dose (mrad)Direct Radiation (mrem)Tour Visitors8.00E+001.98E-041.98E-043.11E-049.95E-052.81E-041.65E-02Firing Range8.00E+002.61E-062.62E-064.05E-061.24E-063.52E-060.00E+00 DOE Site 618-115.95E+013.69E-063.70E-065.71E-061.29E-053.67E-052.29E-01WNP-4 Whse.2-4 1.04E+031.79E-031.79E-032.81E-038.87E-042.52E-030.00E+00WNP-1 Bldg 1212.60E+038.97E-039.00E-031.41E-024.45E-031.26E-020.00E+00 Dose to Offsite Members of the Public For all routine releases (including liquid doses since no liquid discharges were made), the highest calculated annual dose at the 4.79 mile location in the ESE direction was 1.78E-01 mrem to the bone. The highest dose to the thyroid was

3.74E-02 mrem. The highest dose to the total body was 3.67E-02 mrem. The

highest dose to the skin was 3.73E-02 mrem. All of these doses were for the child

age group.

For environmental thermoluminescent dosim eter (TLD) stations at or beyond the site boundary where preoperational (background) data was acquired, no increase in the average ambient exposure was obser ved in 2014 from the preoperational values.

The information contained in Table 6-5 is c onsistent with previous effluent release reports from Columbia Generating Station.

C-14 does not contribute to air dose;

inhalation dose from C-14 is so small that it is not calculated by the NRC GASPAR computer code. There are no ingestion pathw ays for a hypothetical MOP at the site

boundary. Quarterly and annual dose estimates in this table are made with joint

frequency distribution and dispersion and deposition values derived from meteorological data specific to each time period.

The six sub-tables in Table 6-5 show maximum estimated exposure and dose at

and beyond the site boundary. No residents were observed at the site boundary.

The maximum exposure and dose beyond the site boundary is estimated for

locations with actual residents.

Table 6-5 Summary of Doses from Gaseous Effluents

1. Maximum Air Dose at the Site Boundary (1.2 miles) 1st Quarter 2nd Quarter3rd Quarter4th QuarterAnnual Dose*Beta air dose (mrad)1.71E-031.61E-031.36E-031.54E-036.66E-03Gamma air dose (mrad)4.85E-034.56E-033.84E-034.37E-031.89E-02

Columbia Generating Station 2014 Radioactive Effluent Report 50 2. Maximum Air Dose Beyond the Site Boundary 1st Quarter 2nd Quarter3rd Quarter4th QuarterAnnual Dose*Beta air dose (mrad)1.09E-041.30E-041.30E-042.13E-045.05E-04Gamma air dose (mrad)3.09E-043.70E-042.71E-046.05E-041.43E-03

3. Maximum Annual Dose at the Site Boundary 1st Quarter 2nd Quarter3rd Quarter4th QuarterAnnual Dose*Total body dose (mrem)3.46E-033.24E-032.74E-033.06E-031.34E-02Skin dose (mrem)5.43E-035.10E-034.30E-034.83E-032.10E-02
4. Maximum Annual Dose Beyond the Site Boundary 1st Quarter 2nd Quarter3rd Quarter 4th QuarterAnnual Dose*Total body dose (mrem)8.43E-038.34E-035.27E-031.65E-023.67E-02Skin dose (mrem)8.52E-038.49E-035.39E-031.68E-023.73E-02
5. Maximum Organ Dose at the Site Boundary (1.2 miles) 1st Quarter 2nd Quarter3rd Quarter 4th QuarterAnnual Cumulative*Maximum Organ dose(mrem)5.43E-035.10E-034.30E-034.83E-032.10E-02
6. Maximum Organ Dose Beyond the Site Boundary 1st Quarter 2nd Quarter3rd Quarter 4th QuarterAnnual Cumulative*Maximum Organ dose(mrem)4.12E-024.05E-022.54E-027.99E-021.78E-01
  • Rather than the sum of the quarters , the annual cumulative dose values are based on annual meteorological data and total annual effluents. For each time period, the dose estimate uses the r adionuclide mix and release rate for that period along with an estimate of the di spersion in air and deposition on ground and vegetation calculated by the NRC co mputer code XOQDOQ using actual meteorological conditions during the respective quarters. The dose estimate of

the NRC computer code GASPAR uses, as base methodology, NRC Regulatory Guide 1.109 (1977) which includes the pros pective dose component arising from retention in the body beyond the peri od of environmental exposure.

Columbia Generating Station 51 2014 Radioactive Effluent Report Table 6-6 50-Mile Population Dose from Gaseous Effluents A. 50-mile population collective dose ExposureTotal BodyMax. OrganPathwa y(person-rem)(person-rem) Plume4.95E-034.95E-03 Ground1.16E-031.16E-03 Inhalation3.82E-039.82E-06 Vegetables3.44E-011.70E+00 Milk1.53E-017.61E-01 Meat1.08E-015.40E-01Total6.16E-013.01E+00 B. Average Individual* ExposureTotal BodyMax. OrganPathwa y(mrem)(mrem) Plume1.10E-051.10E-05 Ground2.59E-062.59E-06 Inhalation8.52E-062.19E-08 Vegetables7.67E-043.79E-03 Milk3.41E-041.70E-03 Meat2.41E-041.20E-03Total1.37E-036.71E-03

  • These values are derived by dividing t he 50-mile population collective doses by the population within 50 miles of Columb ia Generating Station (448,383). The population estimate is based on the 2010 c ensus conducted by the United States Census Bureau tabulated/compiled by the Washington State Office of Financial Management, Small Area Estimate Program. The Maximum Organ was the skin.

Columbia Generating Station 2014 Radioactive Effluent Report 527.0 REVISIONS TO THE ODCM The following tables summarize the changes made to the ODCM during 2014. The ODCM is included as an enclosure to the letter transmitting this "Radioactive Effluent Release Report" in compliance with Co lumbia Technical Specification 5.5.1.

LDCN-ODCM-14-014 (Action Request 305170); Amendment 52 Table 3-11, page 3 of 4

Table 3-12, page 1 of 4 Changed the text size so

that the exponents of the

dispersion and deposition

values would be seen The text in the table of the

two affected pages was

larger than normal, so the

exponents were truncated.

Tables 3-11, page 3 of 4, and 3-12, page 1 of 4, were corrected because the exponents of the dispersion and deposit ion values had been truncated while processing the changes. 8.0 REVISIONS TO THE PROCESS CONTROL PROGRAM (PCP)

The PCP is maintained as a Plant O perations Committee approved procedure, SWP-RMP-02. The procedure revi sions in 2014 are shown below;

  • Revised the procedure reference to the Operational Quality Assurance Program Description to indicate the correct section.
  • Added a reference in the procedure for the Design Guidance for Radwaste

Management Systems procedure.

  • Clarified that high integrity containers are used to provide waste form stability.
  • Changed the generic "burial site license" to clearly indicate the US Ecology

radioactive materials license WN-I019-2, issued by WDoH Radioactive Materials

Section.

  • Revised the step on sorting to clearly state that a vendor providing support for dry

active waste sorting must have a radioactive materials license.

  • Provided information that states where the transportation requirements reside and

deleted the remainder of the section, as it is outside the scope of process controls.

  • Removed duplicate transportation and Radwaste requirements from the process

control program. These items are cover ed in the Radwaste Management Program procedure and associated implementing procedures.

  • Added a note to the trending section, which provides an explanation regarding the

relationships of the radionuclide ratios and potential effects to 10 CFR 61 analyses

and associated scaling factors.

  • Revised the training section to indicate that training requirements are tracked in the

Personnel Qualification Directory to assure training and retraining requirement

adherence.

  • Added to the procurement section relative to the minimum number of resin

processing and disposal containers needed to support plant operations.

  • Corrected some references to provide correct titles.

Columbia Generating Station 53 2014 Radioactive Effluent Report 9.0 NEW OR DELETED LOCATIONS FOR DOSE ASSESSMENTS AND/OR ENVIRONMENTAL MONITORING LOCATIONS 9.1 One new garden was identified in the 2014 Five-Mile Land Use Census (LUC) in the NE sector, 4.63 miles fr om the plant. Broad leaf vegetation was observed in the new garden. Dose calculations include broad leaf vegetation consumption for the NE se ctor, and because of the fruit, corn, and other crops being commercially gr own in the area, the garden produce pathway (with no broad leaf vegetation consumption) is assumed for all other residents.

In December of 2013, the ODCM was revised to re-characterize the

Turbine Building Effluent Release Point to reflect the actual configuration of the exhaust fans. This increased the dispersion and deposition values from the Turbine building significantly, but created a situation were the Members of the Public living on the bluff are cl oser to the center line of the plume than those living down by the river. To account for this, dose calculations

are now performed for a location that is 4.79 miles from the plant in the ESE sector.

Ingestion Location Plume Ground Shine Inhalation Garden Produce Beef Meat Cow Milk Resident (4.63 miles NE) X X X X Resident (3.88 miles ENE) X X X X Resident (4.95 miles ENE) X X X X X Resident (4.64 miles E) X X X X X Resident (4.26 miles ESE) X X X X Resident (4.79 miles ESE) X X X X 9.2 Garden Produce samples from the garden in the NE sector were requested during the growing season. There is already an air sampler near the residence at 4.79 in the ESE sector. Milk samples are routinely collected at

7.33 miles ESE even though the dairy cattle are not grazed on open pasture.

9.3 The location previously listed at 4.

50 Miles in the NE sector was replaced with the resident that has a garden at 4.63 miles in the same sector for dose calculation purposes. Dose calculations are no longer being

performed for the dairy at 7.33 miles in the ESE sector, but milk samples

continue to be collected. 10.0 MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS No major changes (as defined by ODCM Section 6.4.3) were made to the

radioactive waste systems (liquid, gaseous, or solid) during this reporting period.

Columbia Generating Station 2014 Radioactive Effluent Report 5411.0 Errata/Corrections to Previous ARERRs The ODCM was revised in December 2013. The revision included changes to the

Turbine building release point that is described in Table 3-13. The changes were

made to account for characteristics such as vent velocity and annual average heat

flow. The increase in vent velocity and heat flow changed the dispersion and

deposition values used when performing dose ca lculations such that the potentially highest-exposed MOP is not necessarily the nearest MOP in each sector.

It was first observed and documented that the changes to Table 3-13 could impact

the potentially highest-exposed MOP on January 23, 2015 (Condition Report-321016). The following evaluation discover ed that, given the meteorological conditions, the potentially highest-exposed MOP is not the nearest in the East Southeast sector, and that corrections would be needed for the 2013 ARERR (Condition Report-321365). The affected pages of the 2013 ARERR, in their entirety, are included as Attachment 1 to this 2014 ARERR.

55 Attachment 1 - Corrections to the 2013 ARERR

56Attachment 1 - Corrections to the 2013 ARERR (continued)

57 Attachment 1 - Corrections to the 2013 ARERR (continued)

END

(a)(b)(c)(d)(e)(f)(g)(h)(i)

ODCM APPEN DIX COLUMBIA GENERATING STATION Bases For Radiological Effluent And Radiological Environmental Monitoring Controls

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