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Annual Radioactive Effluent Release Report
	ML18120A298
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Site:	Columbia
Issue date:	04/30/2018
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To:	; Office of Nuclear Reactor Regulation
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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 2017 Energy Northwest Submitted April, 2018

Columbia Generating Station i

2017 Radioactive Effluent Report Table of Contents

1.0 INTRODUCTION

......................................................................................... 3 2.0 LIQUID EFFLUENTS................................................................................... 3 3.0 GASEOUS EFFLUENTS............................................................................. 3 Routine Releases.................................................................................. 3 Abnormal Release................................................................................. 5 Carbon-14.......................................................................................... 6 Table 3a - Carbon-14 Releases........................................................... 7 Out-of-Service Effluent Monitors............................................................. 7 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...................................................................... 24 Joint Frequency Distribution Tables for 2017............................................ 25 Table 5-1 1st Quarter Average, 33 Ft Above Ground Level (AGL)........... 25 Table 5-2 2nd Quarter Average, 33 Ft AGL........................................ 27 Table 5-3 3rd Quarter Average, 33 Ft AGL......................................... 29 Table 5-4 4th Quarter Average, 33 Ft AGL......................................... 31 Table 5-5 Year 2017, 33 Ft AGL....................................................... 33 6.0 DOSE ASSESSMENT -- IMPACT ON MAN.............................................. 35 Dose to Onsite Members of the Public..................................................... 35 Table 6.0; Dose to Members of the Public within the Site Boundary.......... 36 Dose to Offsite Members of the Public..................................................... 36

Columbia Generating Station ii 2017 Radioactive Effluent Report Table 6-5 Summary of Doses from Gaseous Effluents................................ 37 Table 6-6 50-Mile Population Dose from Gaseous Effluents................... 38 7.0 REVISIONS TO THE ODCM......................................................................39 8.0 REVISIONS TO THE PROCESS CONTROL PROGRAM (PCP)..............39 9.0 NEW OR DELETED LOCATIONS FOR DOSE ASSESSMENTS AND/OR ENVIRONMENTAL MONITORING LOCATIONS................................39 10.0 MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS..........................................................39 11.0 ERRATA..................................................................................................39 ATTACHMENT 1.0 - CORRECTION TO 2016 CGS ARERR............................40

3 1.0 Introduction This report has been prepared in compliance with Part 50 of Title 10 of the Code of Federal Regulations (CFR), specifically 10 CFR 50.36a(a)(2), and Columbia Generating Station (CGS) Technical Specification 5.6.2. It includes a summary of the quantities of radioactive liquid and gaseous effluents and solid radioactive waste released from CGS during calendar year 2017. Effluent data is summarized on a quarterly and annual basis.

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

The United States National Council on Radiation 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 yearly 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, cosmic or space radiation, natural radioactive material in the ground, and natural radioactive materials in our bodies). About 48% is attributed to diagnostic and therapeutic 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 2017.

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

According to ground water monitoring, spills of greater than 100 gallons, and the leak detection system of the lined evaporation ponds, there is no indication of a leak or spill of radioactive liquids to ground water in 2017.

3.0 Gaseous Effluents Routine Releases Gaseous effluents from CGS are released from 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 included 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.

4 Radioactivity measurements for gaseous effluent 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 distillation and liquid scintillation counting. Particulates and iodines are sampled continuously and the sample media (particulate filters and charcoal cartridges) 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 average 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 identified at levels greater than the Minimum Detectable Activity (MDA) or Minimum Detectable 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 principal radionuclide. Carbon-14 (C-14 or 14C) releases are calculated using an Electric Power Research Institute (EPRI) methodology that is discussed in more detail later in this chapter.

The presence of fuel defects were identified in 2015, and continued into 2017, until fuel bundles could be inspected and removed during a refueling outage. The resulting dose contribution from elevated Noble Gas concentrations remains a small fraction of the10 CFR 50 Appendix I numerical guides. These doses are reported in Table 3-0 and Section 6.0.

Dose calculations were performed for releases using the NRC XOQDOQ and NRC Regulatory Guide 1.109 methodology (manually or with the GASPAR II computer program) and parameter values as described 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 resident 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.

The ODCM includes another set of release rate limits to provide operational flexibility and assurance that radioactive material discharged in gaseous effluents will not result in exposure to a MOP in excess of the design objectives of Appendix I to 10 CFR 50.

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.

5 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 for Members of the Public within the site boundary. The results are discussed and tabulated in Section 6.0.

There are release points around CGS that have been identified as unmonitored and evaluated for significance. Samples were taken in 2017 of the sources of these unmonitored releases.

Some of these release points include; Heating Steam Vents Cooling System Sediment Disposal Cell Lined Evaporation Ponds Condensate Storage Tanks The radionuclides released from these four points were evaluated and determined to be less than one percent of the total Curies released from all release points for the respective type of radionuclide in 2017. The radionuclides detected were Tritium (3H),

Cobalt-60 and Cesium-137, and the calculated activity discharged was 1.32E-01 Ci, 1.10E-08 Ci and 2.00E-08 Ci respectively. The evaluation was completed by either verifying the assumptions of previous bounding calculations, or by evaluating activity released based on sample data. Table 3-4 below was updated to include the activity from these three radionuclides.

Abnormal Release On December 9, 2017 at 00:30 in the morning, a relief valve on the shell side of Seal Steam Evaporator 1A lifted. This valve was reported closed at 01:30 that same morning. The steam released through this valve is exhausted through the Turbine building roof at a point that is not monitored for radiation. The make-up water to this evaporator is feedwater from the Main Condenser that has been filtered through the Condensate filter demineralizers. 3H is the suspected radionuclide of concern in this water, and a sample taken from the Turbine Building Roof confirmed that 3H was the only detectable radionuclide present. The flow rate through this discharge pipe is assumed to be 2.71E+05 cubic centimeters per minute; based on a previous event when the system pressure and relief valve setting were similar. The concentration of 3H in the feedwater was measured to be 2.42E-03 uCi/cc on December 4, 2017. This equates to 3.94E-02 Ci of 3H released while the relief valve was open.

The meteorological data before, during and after the time that the relief valve was open showed that a North Northeast wind was blowing. There are no residents within 5-miles of CGS in the South Southwest sector, and this amount of activity is less than one percent of the total 3H discharged from all release points in 2017. Therefore, the activity of 3.94E-02 has been added to the Curies of 3H reported in 4th quarter of Table 3-4 below and included in the dose calculations for the 4th quarter performed using the GASPAR II computer code.

6 Carbon-14 14C, with a half-life of 5,730 years, is a naturally occurring isotope of carbon produced by cosmic ray interactions in the atmosphere. When 14C 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, the air and inhalation doses are insignificant. Nuclear weapons testing in the 1950s and 1960s significantly increased the amount of 14C in the atmosphere. 14C 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 required reporting the principal nuclides released, 14C had been exempted because of the large quantity that existed naturally in the environment. However, following release of Revision 2 of Regulatory Guide 1.21 (Measuring, Evaluating, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste), the NRC recommended that U.S. nuclear power plants evaluate whether 14C is a "principal radionuclide", and if so, report the amount of 14C released.

A radionuclide is considered a principal radionuclide 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 relatively large amounts but that contribute very little to dose, and (2) radionuclides that are present in very small amounts but that have a relatively high contribution to dose are appropriately included in the annual effluent report.

At CGS, improvements over the years have resulted in a significant decrease in radioactive gaseous emissions. As a result, 14C has become a "principal radionuclide" for the gaseous effluent pathway at CGS. The quantity of gaseous 14C released to the environment is estimated using a 14C source term scaling factor based on EPRI Technical Report 1021106 and power generation. The EPRI report estimates the production of 14C at approximately 5 Ci/GWth - yr for a plant like CGS. This would result in a potential release of 18.1 Ci/yr based on the rated power for CGS. The EPRI report also describes the chemical form of the 14C released as being 95% Carbon Dioxide, which could be incorporated into growing plants during photosynthesis. The remainder is assumed to be methane (CH4).

Table 3a contains estimates of 14C radioactivity released in 2017. Based on 95%

Carbon Dioxide, and assuming that all 14C generated is released in gaseous effluent, then the total 14C emission shown in Table 3a is 16.0 Ci. Estimates of public dose resulting from the 14C effluent are included in the doses reported in Section 6 of this report.

7 Table 3a - Carbon-14 Releases Out-of-Service Effluent Monitors The noble gas detector to the Main Plant Vent (Stack Monitor) was out-of-service from May 17th, 2017 to June 27th, 2017. This out-of-service time started due to planned maintenance on electrical switchgear (SM-7) during a refueling outage. The power outage itself did not last 30 days, but the detector did not cool down appropriately once power was restored. Work began to improve the cooling system required to support operation of this noble gas detector, but this work typically takes anywhere from several days to weeks to complete because of the nature of the cooling system. The detector was restored to functional status on 6/27/17.

GWth-hrs Ci of 14C Ci of 1 CO2 1 st,a ua rt,er 73:90 4.32E+OO 4.10E+OO 2nd Quarter 5,,324 3.14E+OO 2.'99E+OO 3rd,Quarter 75,11 4.43E+OO 4.21 E+OO 4th Quarter 7 *96,5 4.50E+OO 4.27E+OO T otall Y,eHr 2017 2,8,844 1.i68E+01 1.i60E+01

8 Gaseous Effluent Tables Table 3-0 10 CFR Part 50 Appendix I Dose Compliance Report Period: January -- December 2017 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Year*

Noble Gas Gamma Air Dose (mrad) 9.47E-03 5.29E-03 4.46E-03 3.77E-03 2.07E-02 ODCM Limit 5

5 5

5 10

% of Limit 1.89E-01 1.06E-01 8.92E-02 7.54E-02 2.07E-01 Beta Air Dose (mrad) 4.80E-03 4.41E-03 1.57E-03 1.33E-03 1.06E-02 ODCM Limit 10 10 10 10 20

% of Limit 4.80E-02 4.41E-02 1.57E-02 1.33E-02 5.30E-02 Iodine-131, Iodine-133, Tritium, and Particulates with half-lives greater than eight days.

Organ Dose (mrem) 7.37E-02 3.64E-02 5.34E-02 8.19E-02 2.43E-01 ODCM Limit 7.5 7.5 7.5 7.5 15

% of Limit 9.83E-01 4.85E-01 7.13E-01 1.09E+00 1.62E+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 actual resident within a 5-mile radius.

The pathways of exposure considered at the site boundary are the plume exposure, ground exposure, and inhalation pathways only. The potentially highest-exposed MOP from all gaseous effluent releases (including C-14) for 2017, was for a resident (child) at 4.64 miles E. The highest organ dose for the plume exposure, ground exposure, garden produce ingestion, and inhalation pathways was 2.43E-1 mrem which is 1.62% of the 15 mrem 10 CFR 50 Appendix I guideline. This location and assumed exposure pathways were based on the 2017 Land Use Census.

9 Table 3-1 Main Plant Vent Releases - Mixed Mode Fission Gases and Iodines Report Period: January -- December 2017 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci)

(Ci)

A. Fission gases krypton-85

<MDA

<MDA krypton-85m 1.54E+01 5.44E+00

<MDA

<MDA 2.09E+01 krypton-87

<MDA

<MDA krypton-88 9.87E+00 3.12E+00

<MDA

<MDA 1.30E+01 xenon-133 4.56E+01 4.92E+01

<MDA

<MDA 9.49E+01 xenon-133m

<MDA

<MDA xenon-135

<MDA 2.24E+01

<MDA

<MDA 2.24E+01 xenon-135m

<MDA 3.78E+00

<MDA

<MDA 3.78E+00 xenon-138

<MDA

<MDA Others argon-41 9.31E+00 5.22E+00 1.99E+01 1.64E+01 5.08E+01 Total for period

8.03E+01 8.91E+01 1.99E+01 1.64E+01 2.06E+02 B. Iodines iodine-131 2.82E-05 6.19E-04 9.39E-06

<MDA 6.56E-04 iodine-132

<MDA

<MDA iodine-133

<MDA

<MDA 3.57E-05

<MDA 3.57E-05 iodine-134

<MDA

<MDA iodine-135

<MDA

<MDA Total for period

2.82E-05 6.19E-04 4.51E-05 0.00E+00 6.92E-04

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

10 Table 3-1 Main Plant Vent Releases - Mixed Mode (Continued)

Particulates and Tritium Report Period: January -- December 2017 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci)

(Ci)

C. Particulates strontium-89 1.55E-05 1.93E-06

<MDA

<MDA 1.74E-05 strontium-90

<MDA

<MDA cesium-134

<MDA

<MDA cesium-137

<MDA

<MDA barium-lanthanum-140

<MDA

<MDA silver-110m

<MDA

<MDA cerium-141

<MDA

<MDA cerium-144

<MDA

<MDA cobalt-58 4.38E-05 5.35E-05 4.87E-06 1.96E-06 1.04E-04 cobalt-60 5.96E-05 3.20E-04 3.38E-05 3.77E-06 4.17E-04 iron-59

<MDA 1.70E-06

<MDA

<MDA 1.70E-06 manganese-54 1.49E-05 9.68E-05 9.38E-06

<MDA 1.21E-04 zinc-65 9.89E-06 4.10E-05

<MDA

<MDA 5.09E-05 chromium-51

<MDA 4.43E-05

<MDA

<MDA 4.43E-05 antimony-125

<MDA

<MDA Total for period*

1.44E-04 5.60E-04 4.81E-05 5.72E-06 7.57E-04 Others with T 1/2 < 8 days arsenic-76

<MDA

<MDA bromine-82 7.72E-06

<MDA 2.47E-05

<MDA 3.25E-05 copper-64

<MDA

<MDA molybdenum-99

<MDA

<MDA rhenium-188

<MDA

<MDA sodium-24 5.83E-05

<MDA

<MDA 5.83E-05 technetium-99m 1.33E-05 2.86E-06

<MDA

<MDA 1.62E-05 zinc-69m 3.77E-05

<MDA

<MDA 3.77E-05 Total with T 1/2 < 8 days*

1.17E-04 2.86E-06 2.47E-05 0.00E+00 1.45E-04 D. Tritium tritium 2.86E-01 3.65E-01 4.73E-01 4.42E-01 1.57E+00

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

11 Table 3-2 Turbine Building Releases - Mixed Mode Fission Gases and Iodines Report Period: January -- December 2017 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci)

(Ci)

A. Fission gases krypton-85

<MDA

<MDA krypton-85m

<MDA

<MDA krypton-87

<MDA

<MDA krypton-88

<MDA

<MDA xenon-133

<MDA

<MDA xenon-133m

<MDA

<MDA xenon-135

<MDA

<MDA xenon-135m

<MDA

<MDA xenon-138

<MDA

<MDA Others argon-41

<MDA

<MDA Total for period

0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Iodines iodine-131 6.33E-04 4.57E-04

<MDA

<MDA 1.09E-03 iodine-132

<MDA

<MDA iodine-133 4.20E-04 1.58E-05

<MDA

<MDA 4.35E-04 iodine-134

<MDA

<MDA iodine-135

<MDA

<MDA Total for period

1.05E-03 4.73E-04 0.00E+00 0.00E+00 1.53E-03

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

12 Table 3-2 Turbine Building Releases - Mixed Mode (Continued)

Particulates and Tritium Report Period: January -- December 2017 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci)

(Ci)

C. Particulates strontium-89 4.11E-05 1.33E-05

<MDA

<MDA 5.44E-05 strontium-90

<MDA

<MDA cesium-134

<MDA

<MDA cesium-137

<MDA

<MDA barium-lanthanum-140

<MDA

<MDA cerium-141

<MDA

<MDA cerium-144

<MDA

<MDA cobalt-58

<MDA

<MDA cobalt-60 8.07E-06 8.87E-06 3.79E-05 8.53E-06 6.34E-05 iron-59

<MDA

<MDA manganese-54

<MDA

<MDA zinc-65

<MDA

<MDA chromium-51

<MDA

<MDA Total for period*

4.92E-05 2.22E-05 3.79E-05 8.53E-06 1.18E-04 Others with T 1/2 < 8 days molybdenum-99

<MDA

<MDA technecium-99m

<MDA

<MDA strontium-91

<MDA

<MDA Total with T 1/2 < 8 days*

0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Tritium tritium 4.80E+00 2.77E+00 7.87E-01 3.45E+00 1.18E+01

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

13 Table 3-3 Radwaste Building Releases - Ground Mode Fission Gases and Iodines Report Period: January -- December 2017 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci)

(Ci)

A. Fission gases krypton-85

<MDA

<MDA krypton-85m

<MDA

<MDA krypton-87

<MDA

<MDA krypton-88

<MDA

<MDA xenon-133

<MDA

<MDA xenon-133m

<MDA

<MDA xenon-135

<MDA

<MDA xenon-135m

<MDA

<MDA xenon-138

<MDA

<MDA Others argon-41

<MDA

<MDA Total for period

0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Iodines iodine-131 3.03E-05 1.34E-04 1.07E-06

<MDA 1.66E-04 iodine-132

<MDA

<MDA iodine-133

<MDA

<MDA iodine-134

<MDA

<MDA iodine-135

<MDA

<MDA Total for period

3.03E-05 1.34E-04 1.07E-06 0.00E+00 1.66E-04

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

14 Table 3-3 Radwaste Building Releases - Ground Mode (Continued)

Particulates and Tritium Report Period: January -- December 2017 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci)

(Ci)

C. Particulates strontium-89 3.39E-06 4.53E-07

<MDA

<MDA 3.85E-06 strontium-90 9.29E-08 1.78E-08

<MDA

<MDA 1.11E-07 cesium-134

<MDA

<MDA cesium-137

<MDA

<MDA barium-lanthanum-140

<MDA

<MDA cerium-141

<MDA

<MDA cerium-144

<MDA

<MDA cobalt-58

<MDA

<MDA cobalt-60

<MDA

<MDA 8.13E-07

<MDA 8.13E-07 iron-59

<MDA

<MDA manganese-54

<MDA

<MDA zinc-65

<MDA

<MDA Total for period*

3.49E-06 4.71E-07 8.13E-07 0.00E+00 4.77E-06 Others with T 1/2 < 8 days molybdenum-99

<MDA

<MDA Total with T 1/2 < 8 days*

0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Tritium tritium 1.00E-01 9.29E-02 9.35E-02 1.05E-01 3.92E-01

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

15 Table 3-4 Summation of Releases Gaseous Effluents Report Period: January -- December 2017 Est*

1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter Year

%Error A. Fission and activation gases Total release (Ci) 8.03E+01 8.91E+01 1.99E+01 1.64E+01 2.06E+02 4.30E+01 Average release rate (Ci/s) 1.02E+01 1.13E+01 2.53E+00 1.94E+00 6.42E+00 Percent of ODCM limit (%) 7.24E-03 3.99E-03 3.40E-03 2.99E-03 3.86E-03 B. Iodines Total I-131 (Ci) 6.91E-04 1.21E-03 1.05E-05

<MDA 1.91E-03 4.60E+01 Average release rate (Ci/s) 8.79E-05 1.54E-04 1.33E-06

<MDA 5.96E-05 Percent of ODCM limit (%) 8.12E-05 2.04E-04 3.27E-06 0.00E+00 7.3E-05 C. Particulates Particulates with half-lives

>8 days (Ci) 1.96E-04 5.82E-04 8.68E-05 1.43E-05 8.80E-04 4.50E+01 Average release rate (Ci/s) 2.50E-05 7.40E-05 1.10E-05 1.68E-06 2.74E-05 Percent of ODCM limit (%) 5.00E-06 2.14E-05 2.99E-06 3.95E-07 6.42E-06 Gross alpha radioactivity (Ci) 8.87E-07 1.16E-06 2.83E-06 1.47E-06 6.35E-06 7.30E+01 D. Tritium Total release (Ci) 5.19E+00 3.23E+00 1.35E+00 4.03E+00 1.39E+01 2.60E+01 Average release rate (Ci/s) 6.60E-01 4.11E-01 1.72E-01 4.76E-01 4.34E-01 Percent of ODCM limit (%) 1.53E-05 9.97E-06 8.05E-06 1.10E-05 9.94E-06

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, plateout factors, charcoal cartridge efficiencies, sample line vacuum, run time estimates, anisokinetic correction factors, and gravimetric, gamma spectroscopy, and liquid scintillation analysis errors.

ODCM release rate limits are based on dose 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.

16 Table 3-5 Gaseous Purges and Vents Report Period: January -- December 2017 Total Maximum Minimum Mean Type Number Time (hr.)

Time (hr.)

Purge 1.00E+00 3.46E+01 3.46E+01 3.46E+01 3.46E+01 Vent 3.30E+01 4.25E+01 6.55E+00 2.67E-01 1.29E+00 Columbia Generating Station is a continuous release plant. All purges and vents are discharged through the High-Efficiency Particulate Air (HEPA) filters and charcoal beds of the Standby Gas Treatment System and released through the reactor building release duct which is, by procedure and design, sampled and continuously monitored for radioactive gaseous waste as a continuous release point.

17 Table 3-6 Lower Limits of Detection Gaseous Effluents Report Period: January -- December 2017 Fission Gases Nuclide Required LLD (Ci/cc)

Achieved Analysis LLD (Ci/cc) krypton-87 1.00E-04 1.05E-08 krypton-88 1.00E-04 1.29E-08 xenon-133 1.00E-04 1.00E-08 xenon-133m 1.00E-04 3.25E-08 xenon-135 1.00E-04 3.77E-09 xenon-138 1.00E-04 4.48E-08 Iodines iodine-131 1.00E-12 5.79E-14 iodine-133 1.00E-10 1.10E-12 Particulates strontium-89 1.00E-11 1.16E-14 strontium-90 1.00E-11 5.12E-15 cesium-134 1.00E-11 4.63E-14 cesium-137 1.00E-11 3.91E-14 molybdenum-99 1.00E-11 7.97E-13 cerium-141 1.00E-11 4.70E-14 cerium-144 1.00E-11 1.78E-13 cobalt-58 1.00E-11 4.27E-14 cobalt-60 1.00E-11 7.75E-14 iron-59 1.00E-11 1.01E-13 manganese-54 1.00E-11 3.68E-14 zinc-65 1.00E-11 1.10E-13 Gross Alpha 1.00E-11 9.01E-16 Tritium hydrogen-3 1.00E-06 5.85E-11 From ODCM Table 6.2.2.1-1

18 4.0 Solid Radwaste This section of the annual effluent report provides information required by the Columbia Generating Station Offsite Dose Calculation Manual and recommended by Nuclear Regulatory Commission Regulatory Guide 1.21, Revision 1 (1974).

Solid Radwaste Information required by the Offsite Dose Calculation Manual January -- December 2017 Class A

1.

Container Volumes (ft3) 5 gallon pail 0.80 55 gallon drum 7.50 B-25 Steel Box 96.0 PL8-120 Polyethylene HIC (SERDS) 120 B-88 Steel Box 128 EL-142 Polyethylene HIC 132 ES-190 Steel Liner 170 PL14-170 Polyethylene HIC (SERDS) 171 14-170 Steel Liner (SERDS) 180 20 ft C-Van 1280

2.

Total Curies 4.64E+01 Curies

19

3.

Principal Radionuclides Nuclide Curies Percent Co-60 1.07E+01 2.31E-01 C-14 3.09E+00 6.66E-02 Mn-54 2.78E+00 6.00E-02 Co-58 1.92E+00 4.13E-02 Pu-241 1.47E-02 3.17E-04 Zn-65 9.09E-01 1.96E-02 Ag-110m 1.67E-01 3.59E-03 Pu-238 1.52E-04 3.28E-06 Cs-137 1.78E-02 3.84E-04 Pu-239 1.22E-04 2.63E-06 Am-241 1.02E-04 2.20E-06 Fe-55 2.58E+01 5.57E-01 Cm-243 5.34E-05 1.15E-06 Cs-134 1.46E-03 3.16E-05 Cm-242 2.10E-04 4.52E-06 Fe-59 2.48E-01 5.35E-03 Sr-90 3.02E-03 6.50E-05 Ni-63 4.56E-01 9.84E-03 Sb-124 2.89E-02 6.24E-04 H-3 5.66E-03 1.22E-04 Tc-99 5.55E-06 1.20E-07 I-129 1.79E-07 3.85E-09 Nb-95 6.73E-03 1.45E-04 Ba-140 8.12E-04 1.75E-05 I-131 7.60E-03 1.64E-04 Cr-51 1.27E-01 2.74E-03 Co-57 5.66E-03 1.22E-04 Sb-125 1.42E-02 3.06E-04 Zr-95 4.47E-03 9.64E-05

20

4.

Source Resins 4.32E+01 Ci DAW 3.16E+00 Ci Irradiated Components None Other (Sealed Source, Mixed Waste, & Liquid Waste)

None

5.

Type of Container All containers shipped as LSA, SCO or radioactive material in Excepted Packaging, Type A or Type B (including casks) as appropriate

6.

Solidification Agent None Class B There were no Class B shipments made during calendar year 2017.

Class C There were no Class C shipments made during calendar year 2017.

21 Solid Radwaste Information Recommended by NRC Regulatory Guide 1.21 January -- December 2017 Solid waste shipped offsite for burial or disposal (not irradiated fuel).

1.

Type of Waste Waste Stream Category Unit Annual Cumulative Est. Total Error %

A. Spent resins, filter sludge, evaporator bottoms, etc.

m3 Ci 6.02E+01 4.32E+01 2.50E+01%

B. Dry Active Waste m3 Ci 1.60E+01 3.16E+00 2.50E+01%

C. Irradiated Components m3 Ci 0

D. Other Waste (Sealed Source, mixed waste, & Liquid Waste) m3 Ci 0

22

2.

Estimate of major nuclide composition (by type of waste)

a. Dewatered Spent Resins - All Class A Nuclide Curies Percent Co-60 9.74E+00 2.25E-01 C-14 3.09E+00 7.15E-02 Mn-54 2.51E+00 5.81E-02 Co-58 7.47E-01 1.73E-02 Pu-241 1.23E-02 2.84E-04 Zn-65 2.92E-01 6.76E-03 Ag-110m 1.67E-01 3.86E-03 Pu-238 1.27E-04 2.93E-06 Cs-137 1.78E-02 4.12E-04 Pu-239 1.01E-04 2.35E-06 Am-241 8.48E-05 1.96E-06 Fe-55 2.57E+01 5.96E-01 Cm-243 4.45E-05 1.03E-06 Cs-134 1.46E-03 3.39E-05 Cm-242 1.74E-04 4.03E-06 Fe-59 2.48E-01 5.75E-03 Sr-90 2.71E-03 6.27E-05 Ni-63 4.33E-01 1.00E-02 Sb-124 2.89E-02 6.70E-04 H-3 5.58E-03 1.29E-04 Tc-99 5.43E-06 1.26E-07 I-129 1.48E-07 3.43E-09 Nb-95 6.73E-03 1.56E-04 Ba-140 8.12E-04 1.88E-05 I-131 7.60E-03 1.76E-04 Cr-51 1.27E-01 2.94E-03 Co-57 5.66E-03 1.31E-04 Sb-125 1.42E-02 3.29E-04 Zr-95 4.47E-03 1.04E-04

23

b. Dry Active Waste (DAW) - All Class A Nuclide Curies Percent Co-60 9.87E-01 3.12E-01 Co-58 1.17E+00 3.71E-01 Zn-65 6.17E-01 1.95E-01 Mn-54 2.72E-01 8.62E-02 Pu-241 2.47E-03 7.82E-04 Pu-238 2.55E-05 8.08E-06 Pu-239 2.05E-05 6.48E-06 Am-241 1.71E-05 5.40E-06 Cm-243 8.98E-06 2.84E-06 Cm-242 3.58E-05 1.13E-05 Fe-55 8.41E-02 2.66E-02 Sr-90 3.05E-04 9.64E-05 Ni-63 2.33E-02 7.38E-03 C-14 4.67E-04 1.48E-04 H-3 8.28E-05 2.62E-05 Tc-99 1.20E-07 3.79E-08 I-129 3.04E-08 9.61E-09

c. Irradiated Components - All Class C None

d. Other Waste (sealed source, mixed waste, and liquid waste) - All Class A None

3.

Solid Waste Disposition Number of Shipments Mode of Transportation Destination 13 Tractor - Trailer US Ecology, Inc.

via Public Highway P.O. Box 638 Hanford Reservation Richland, WA. 99352 Irradiated Fuel Shipments (Disposition)

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

24 5.0 Meteorological Data The meteorological data contained in Tables 5-1 through 5-5 was obtained from a meteorological tower located 762 meters (2500 feet) west of Columbia Generating Station. Data was recovered from two sets 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 automated data recovery systems for the calendar year 2017. Data is archived on the Energy Northwest Local Area Network.

Meteorological data recovery for 2017 was 91.7% at the 10 meter (33-foot) level.

Redundant wind and temperature sensors are installed at both levels of the meteorological tower. Data from the two systems can be combined to permit maximum data recovery for defined date ranges.

The data in Tables 5-1 through 5-4 provide joint frequency distributions (JFD) at the 10-meter level by quarter for 2017. These tables show the total hours at various wind speeds for each sector 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 5-5 provide the annual joint frequency distributions.

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 dispersion and deposition. Those conditions which were measured or documented at the Hanford Meteorological Station during 2017 were snow (30 inches), total precipitation (8.6 inches), dust or blowing dust (0 days), fog (79 days), thunderstorms (10 days), and smoke (17 day).

25 Joint Frequency Distribution Tables for 2017 Table 5-1 1st Quarter Average, 33 Ft Above Ground Level (AGL)

Elevation:

33 Start Date:

Total number of Periods: 2159 Period: 1st Quarter Stop Date:

Periods of No Data Recovery:

44 System Percent Data Recovery:

Stability Class:

A Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

0 0

4.5 6.7 0

0 0

6.7 8.9 0

0 0

8.9 11.2 0

0 0

11.2 13.4 0

0 0

13.4 17.9 0

0 0

17.9 22.4 0

0 0

22.4 29.1 0

0 0

1 0

0 0

0 1

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 0

0 0

1 0

0 0

0 1

Stability Class:

B Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

0 0

4.5 6.7 0

0 0

6.7 8.9 0

0 0

8.9 11.2 0

0 0

11.2 13.4 0

0 0

13.4 17.9 0

0 0

17.9 22.4 0

0 0

22.4 29.1 0

0 0

1 0

0 0

0 1

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 0

0 0

1 0

0 0

0 1

Stability Class:

C Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

0 1

2.2 4.5 0

0 0

0 1

4.5 6.7 0

1 0

0 0

1 2

6.7 8.9 0

0 0

0 1

8.9 11.2 0

0 0

0 1

0 0

0 1

11.2 13.4 0

0 0

13.4 17.9 0

0 0

0 2

5 0

1 0

0 1

0 9

17.9 22.4 0

0 0

4 0

0 0

0 4

22.4 29.1 0

0 0

3 1

1 0

0 0

0 5

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 0

1 0

0 0

0 3

12 1

2 0

0 4

1 24 Stability Class:

D Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 10 4

2 2

0 5

4 3

1 3

4 6

3 7

18 8

80 2.2 4.5 7

4 6

1 0

4 5

13 14 6

5 2

7 11 24 21 130 4.5 6.7 8

1 3

0 0

1 9

16 16 4

1 4

2 9

24 5

103 6.7 8.9 2

2 4

0 0

0 10 14 8

5 3

5 15 9

85 8.9 11.2 3

0 0

0 3

7 14 4

2 2

2 9

6 5

57 11.2 13.4 2

0 0

4 11 3

3 0

2 4

16 9

54 13.4 17.9 10 0

0 0

0 2

8 7

4 6

1 9

12 9

68 17.9 22.4 2

0 0

0 2

8 2

2 0

1 0

1 18 22.4 29.1 0

0 0

1 1

2 1

0 0

0 5

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 44 11 15 3

0 10 31 60 75 42 25 27 20 55 115 67 600 1/1/2017 4/1/2017 98.0%

T t r T

+

t t

t t t

+

t t t t

t t

t

+

t t

+

t t

t t t

+

t t t t

t t

t t t

t t t t

t

+

26 Table 5-1 1st Quarter Average, 33 Ft AGL (Continued)

Stability Class:

E Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 6

6 4

3 0

3 2

14 19 9

9 11 6

16 20 12 140 2.2 4.5 10 8

6 1

3 3

9 17 15 10 8

15 18 24 51 17 215 4.5 6.7 7

0 5

0 0

1 7

17 8

8 3

3 3

9 34 11 116 6.7 8.9 0

1 0

0 8

19 12 8

7 5

4 10 13 7

95 8.9 11.2 1

0 0

0 8

14 9

7 7

0 4

9 8

7 74 11.2 13.4 3

0 0

0 1

5 10 6

8 4

2 3

8 6

56 13.4 17.9 5

0 0

8 8

12 11 5

3 7

12 11 82 17.9 22.4 0

0 0

0 1

11 1

0 2

1 2

6 24 22.4 29.1 0

0 0

7 0

0 0

0 7

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 32 15 15 5

3 7

35 94 82 78 54 43 42 79 148 77 809 Stability Class:

F Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 4

4 1

1 1

2 2

2 4

4 6

7 10 3

8 6

65 2.2 4.5 14 7

4 0

0 2

4 13 4

8 8

12 7

14 13 15 125 4.5 6.7 2

1 3

0 0

0 6

17 18 2

2 4

2 8

9 10 84 6.7 8.9 0

0 1

0 0

0 2

23 5

2 1

1 1

3 1

1 41 8.9 11.2 0

0 0

0 2

10 2

0 0

3 2

1 3

1 24 11.2 13.4 0

0 0

0 2

4 3

1 0

0 0

1 2

0 13 13.4 17.9 0

0 0

4 5

4 0

0 0

1 2

0 16 17.9 22.4 0

0 0

0 1

1 0

0 0

0 2

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 20 12 9

1 1

4 18 73 42 22 17 27 22 31 38 33 370 Stability Class:

G Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 4

1 0

0 0

0 2

1 4

3 1

2 2

2 4

6 32 2.2 4.5 1

3 2

0 0

3 7

2 1

1 3

7 17 9

56 4.5 6.7 0

0 0

1 2

3 0

1 0

3 18 5

33 6.7 8.9 0

0 0

3 4

4 0

0 0

0 4

2 17 8.9 11.2 0

0 0

5 1

0 0

1 3

0 10 11.2 13.4 0

0 0

3 0

0 0

1 0

0 4

13.4 17.9 0

0 0

4 1

0 0

0 5

17.9 22.4 0

0 0

2 1

0 0

0 3

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 5

4 2

0 0

0 2

22 20 12 2

4 5

14 46 22 160 Stability Class:

All Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 24 15 7

6 1

10 10 20 28 19 20 26 21 28 51 32 318 2.2 4.5 32 22 18 2

3 9

18 46 40 26 22 30 35 56 106 62 527 4.5 6.7 17 3

11 0

0 2

22 51 44 17 6

12 7

29 85 32 338 6.7 8.9 2

3 5

1 0

0 20 59 29 19 11 11 8

18 34 19 239 8.9 11.2 4

0 0

0 13 36 27 11 9

5 8

20 20 13 166 11.2 13.4 5

0 0

0 3

16 24 10 11 4

4 9

26 15 127 13.4 17.9 15 0

0 0

0 18 24 28 15 12 4

17 27 20 180 17.9 22.4 2

0 0

2 5

24 3

2 2

7 51 22.4 29.1 0

0 0

1 1

14 2

1 0

0 0

0 19 29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 101 43 41 9

4 21 86 249 222 168 99 103 89 179 351 200 1965 Periods of Calm while in Stability Class:

A B

C D

E F

G Total 0

0 0

36 72 28 14 150 T

T T

+

t t

t

+

I I

L t t

+

t

+

t t

t t t t

27 Table 5-2 2nd Quarter Average, 33 Ft AGL Elevation:

33 Start Date:

Total number of Periods: 2184 Period: 2nd Quarter Stop Date:

Periods of No Data Recovery:

634 System Percent Data Recovery:

Stability Class:

A Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

1 1

0 0

0 2

4.5 6.7 0

1 0

0 2

0 0

2 0

0 0

0 6

6.7 8.9 0

1 0

0 0

0 2

0 0

0 3

8.9 11.2 0

1 1

0 0

1 1

0 1

0 5

11.2 13.4 0

0 0

1 1

13.4 17.9 0

0 0

0 3

1 4

17.9 22.4 0

0 0

1 2

0 3

22.4 29.1 0

0 0

1 0

0 0

0 1

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 0

4 2

1 0

0 2

0 0

3 0

1 3

1 6

2 25 Stability Class:

B Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

1 0

0 0

0 1

4.5 6.7 1

3 0

0 0

0 1

0 0

2 7

6.7 8.9 0

2 2

2 0

0 0

1 0

2 9

8.9 11.2 1

0 2

0 0

1 1

0 0

0 2

1 0

1 9

11.2 13.4 0

0 0

0 1

0 0

1 0

0 2

13.4 17.9 0

0 0

4 1

0 0

0 3

1 9

17.9 22.4 0

0 0

0 1

0 3

0 4

22.4 29.1 0

0 0

0 3

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 2

6 4

2 0

0 1

1 2

4 1

0 3

3 9

6 44 Stability Class:

C Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 2

0 0

0 2

2.2 4.5 4

2 3

2 1

0 0

0 1

3 19 4.5 6.7 5

6 8

0 1

0 0

0 3

1 0

0 1

0 4

3 32 6.7 8.9 2

5 2

0 1

2 6

1 1

1 2

0 0

2 26 8.9 11.2 1

0 2

1 0

0 0

2 4

4 0

6 3

1 1

4 29 11.2 13.4 0

0 0

0 12 6

0 5

3 0

2 0

28 13.4 17.9 0

0 0

0 7

8 2

2 1

2 0

1 23 17.9 22.4 0

0 0

1 2

0 1

4 1

0 9

22.4 29.1 0

0 0

2 1

0 0

1 1

0 5

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 14 13 15 3

3 2

2 4

32 23 6

14 11 8

10 13 173 Stability Class:

D Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 1

2 5

1 2

2 6

4 4

2 2

0 0

3 5

3 42 2.2 4.5 4

10 10 4

3 7

8 19 9

9 3

5 7

2 5

7 112 4.5 6.7 9

1 9

4 1

5 7

14 9

6 4

6 3

2 10 6

96 6.7 8.9 5

3 2

4 1

1 7

13 10 6

3 1

3 0

4 1

64 8.9 11.2 0

1 0

1 5

4 17 17 7

5 2

8 5

3 76 11.2 13.4 0

0 0

2 7

13 3

3 2

0 35 13.4 17.9 0

0 0

1 5

6 4

7 3

3 4

0 33 17.9 22.4 0

0 0

0 1

6 3

5 1

7 7

0 30 22.4 29.1 0

0 0

1 2

0 0

1 0

3 1

0 8

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 19 17 26 14 7

16 33 58 64 65 29 33 21 31 43 20 496 4/1/2017 7/1/2017 71.0%

T T

I I I

t 1

t t

t t t t

t t t 1

t t

28 Table 5-2 2nd Quarter Average, 33 Ft AGL (Continued)

Stability Class:

E Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 2

4 1

1 0

1 1

1 2

1 5

2 4

1 0

2 28 2.2 4.5 7

5 3

2 1

4 2

7 5

10 5

12 6

3 2

4 78 4.5 6.7 2

3 5

0 1

4 4

9 4

8 6

3 6

8 8

8 79 6.7 8.9 0

0 4

0 0

0 2

9 16 6

3 5

7 5

8 3

68 8.9 11.2 0

0 1

1 0

1 3

5 15 5

2 2

12 10 7

0 64 11.2 13.4 0

1 0

0 0

2 12 6

1 2

9 10 2

0 45 13.4 17.9 0

0 0

1 4

6 1

1 5

15 3

0 36 17.9 22.4 0

0 0

0 1

0 0

6 1

0 8

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 11 13 14 4

2 10 12 34 58 42 24 27 49 58 31 17 406 Stability Class:

F Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 1

2 0

1 0

1 1

5 2

6 0

0 0

1 2

4 26 2.2 4.5 1

7 3

1 0

0 1

8 5

6 2

2 5

7 8

5 61 4.5 6.7 1

5 3

0 0

1 2

9 11 5

2 3

5 4

7 6

64 6.7 8.9 0

0 1

0 0

0 1

4 5

3 2

1 5

3 8

0 33 8.9 11.2 0

0 0

0 1

5 3

5 0

1 2

2 3

0 22 11.2 13.4 0

0 0

13.4 17.9 0

0 0

0 1

0 0

0 1

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 3

14 7

2 0

2 6

31 27 25 6

7 17 17 28 15 207 Stability Class:

G Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 4

4 2

0 1

0 0

1 1

0 1

1 2

4 23 2.2 4.5 8

8 1

0 0

1 4

4 5

4 4

0 2

1 9

3 54 4.5 6.7 1

3 1

0 0

10 4

2 2

1 0

0 7

2 33 6.7 8.9 0

0 0

0 1

4 4

5 0

0 0

0 1

0 15 8.9 11.2 0

0 0

4 0

0 0

2 0

0 0

0 6

11.2 13.4 0

0 0

13.4 17.9 0

0 0

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 13 15 4

0 1

1 5

23 14 12 7

3 3

2 19 9

131 Stability Class:

All Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 10 12 8

3 3

4 8

11 9

10 8

2 5

6 9

13 121 2.2 4.5 24 34 21 9

5 14 16 38 24 29 14 19 20 13 25 22 327 4.5 6.7 19 22 26 5

3 10 16 42 31 24 14 13 15 14 36 27 317 6.7 8.9 7

11 11 6

2 1

12 32 41 21 9

8 19 9

21 8

218 8.9 11.2 2

2 6

3 0

2 9

21 40 31 9

17 22 22 17 8

211 11.2 13.4 0

1 0

0 0

4 32 25 4

10 14 14 6

1 111 13.4 17.9 0

0 0

2 17 24 8

10 9

20 13 3

106 17.9 22.4 0

0 0

0 1

7 6

5 3

18 14 0

54 22.4 29.1 0

0 0

1 2

3 1

1 0

4 5

0 17 29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 62 82 72 26 13 31 61 151 197 174 73 85 107 120 146 82 1482 Periods of Calm while in Stability Class:

A B

C D

E F

G Total 2

0 0

15 9

15 27 68 r

T r

T T

T I

I I

t t t t t t t t

t t

I t

t t

t f

29 Table 5-3 3rd Quarter Average, 33 Ft AGL Elevation:

33 Start Date:

Total number of Periods: 2208 Period: 3rd Quarter Stop Date:

Periods of No Data Recovery:

4 System Percent Data Recovery:

Stability Class:

A Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

0 0

4.5 6.7 0

0 0

6.7 8.9 0

0 1

0 0

0 1

8.9 11.2 0

0 0

11.2 13.4 0

0 0

13.4 17.9 0

0 0

0 1

0 0

0 1

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 0

0 1

0 0

0 1

0 0

0 2

Stability Class:

B Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

0 0

4.5 6.7 1

0 0

0 1

6.7 8.9 0

3 0

0 0

0 3

8.9 11.2 0

2 0

0 0

0 3

0 0

0 5

11.2 13.4 2

0 0

0 4

2 0

0 0

0 8

13.4 17.9 0

0 0

0 1

4 0

0 0

0 1

0 6

17.9 22.4 0

0 0

1 1

0 0

0 2

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 3

5 0

0 0

0 8

7 1

0 0

0 1

0 25 Stability Class:

C Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 2

1 0

0 1

0 0

2 6

2.2 4.5 11 7

1 2

3 0

0 1

1 0

0 0

1 2

30 4.5 6.7 4

6 10 6

3 0

0 4

8 1

0 0

0 2

46 6.7 8.9 2

3 3

1 0

3 0

8 19 4

1 0

0 0

0 1

45 8.9 11.2 3

0 0

2 0

0 1

6 6

5 0

0 2

1 1

0 27 11.2 13.4 3

0 0

0 4

4 2

0 0

1 14 13.4 17.9 1

0 0

0 1

4 2

0 1

0 0

0 9

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 26 17 14 11 7

3 1

19 39 18 6

0 3

3 2

8 177 Stability Class:

D Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 7

7 11 19 13 5

4 12 7

4 5

4 0

2 5

7 112 2.2 4.5 13 13 25 31 14 17 22 31 19 10 3

3 2

2 7

12 224 4.5 6.7 7

8 17 26 11 5

26 26 26 8

2 2

0 2

4 10 180 6.7 8.9 6

2 6

14 4

6 18 14 18 4

3 5

8 3

2 6

119 8.9 11.2 7

5 2

3 3

1 9

7 6

1 3

2 3

3 0

2 57 11.2 13.4 3

0 0

0 5

1 9

4 2

1 0

0 6

1 32 13.4 17.9 0

0 0

5 1

3 1

2 5

3 20 17.9 22.4 0

0 0

0 1

1 0

0 10 0

12 22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 43 35 61 93 45 34 84 91 85 36 20 21 14 14 39 41 756 7/1/2017 10/1/2017 99.8%

I I I f I

I I

t t t t

t t

l t t t t t

t t

30 Table 5-3 3rd Quarter Average, 33 Ft AGL (Continued)

Stability Class:

E Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 2

1 0

3 0

2 4

3 2

2 0

4 3

2 3

0 31 2.2 4.5 9

7 5

3 0

2 3

3 15 4

3 1

5 6

7 2

75 4.5 6.7 7

1 5

1 3

1 6

17 9

3 2

5 5

7 6

6 84 6.7 8.9 1

0 3

1 0

0 9

6 4

0 2

1 3

12 11 3

56 8.9 11.2 0

0 0

0 5

3 3

1 3

13 9

2 45 11.2 13.4 0

0 0

0 1

4 3

1 1

7 10 1

28 13.4 17.9 0

0 0

0 1

2 0

0 0

6 25 0

34 17.9 22.4 0

0 0

2 2

0 4

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 19 9

13 8

3 5

27 32 35 18 13 13 20 55 73 14 357 Stability Class:

F Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 5

2 6

3 1

3 7

6 6

5 2

2 1

4 7

4 64 2.2 4.5 7

13 7

5 1

2 3

9 15 7

6 2

2 4

5 12 100 4.5 6.7 1

5 5

3 2

0 6

26 13 8

1 0

2 1

6 8

87 6.7 8.9 1

0 0

0 5

13 4

0 1

2 3

2 32 8.9 11.2 0

0 0

0 1

3 1

0 0

0 2

0 7

11.2 13.4 0

0 0

4 0

0 4

13.4 17.9 0

0 0

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 14 20 18 11 4

5 22 57 39 20 10 4

6 15 23 26 294 Stability Class:

G Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 8

15 17 10 9

3 7

7 10 6

5 3

6 2

4 5

117 2.2 4.5 29 27 42 9

0 1

14 17 14 4

2 1

4 2

8 14 188 4.5 6.7 2

4 14 4

0 0

5 19 21 5

1 0

6 7

89 6.7 8.9 0

0 2

0 0

10 9

1 1

0 1

1 6

3 34 8.9 11.2 0

0 0

1 1

0 0

0 2

11.2 13.4 0

0 0

13.4 17.9 0

0 0

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 39 46 75 23 9

4 26 53 54 17 10 4

12 5

24 29 430 Stability Class:

All Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 24 26 34 35 24 13 22 28 25 17 12 13 10 10 19 18 330 2.2 4.5 69 67 80 50 18 22 42 61 64 25 15 7

13 14 28 42 617 4.5 6.7 22 24 51 40 19 6

43 92 77 25 6

7 8

12 22 33 487 6.7 8.9 10 8

15 16 4

9 32 51 54 9

8 6

13 18 22 15 290 8.9 11.2 10 7

2 5

3 1

16 19 19 10 7

3 8

17 12 4

143 11.2 13.4 8

0 0

0 5

1 18 14 7

2 1

11 16 3

86 13.4 17.9 1

0 0

0 4

15 3

3 2

8 31 3

70 17.9 22.4 0

0 0

1 2

1 0

2 12 0

18 22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 144 132 182 146 68 51 160 252 261 116 60 42 55 92 162 118 2041 Periods of Calm while in Stability Class:

A B

C D

E F

G Total 0

0 0

33 18 33 79 163 r

r r

t t t t

+

t t

t t t t

+

I I

I t t t t

31 Table 5-4 4th Quarter Average, 33 Ft AGL Elevation:

33 Start Date:

Total number of Periods: 2209 Period: 4th Quarter Stop Date:

Periods of No Data Recovery:

46 System Percent Data Recovery:

Stability Class:

A Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

0 0

4.5 6.7 0

0 0

6.7 8.9 0

0 0

8.9 11.2 0

0 0

11.2 13.4 0

0 0

13.4 17.9 0

0 0

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 0

0 0

Stability Class:

B Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

0 0

4.5 6.7 0

0 0

6.7 8.9 0

0 0

8.9 11.2 0

0 0

11.2 13.4 0

0 0

0 1

0 0

0 1

13.4 17.9 0

0 0

1 0

0 0

0 1

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 0

0 0

0 1

1 0

0 0

0 2

Stability Class:

C Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 1

0 0

1 2

4.5 6.7 0

3 0

0 0

2 5

6.7 8.9 1

3 0

0 0

2 6

8.9 11.2 1

0 3

0 0

1 5

11.2 13.4 0

0 1

0 0

0 2

1 0

0 0

0 4

13.4 17.9 0

2 1

0 0

0 5

5 1

0 3

2 0

0 19 17.9 22.4 0

0 0

1 0

0 0

0 1

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 3

8 5

0 0

0 7

7 1

0 3

2 0

6 42 Stability Class:

D Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 9

6 11 4

1 1

5 7

15 9

6 2

6 9

7 7

105 2.2 4.5 17 23 15 7

0 1

6 17 20 5

1 6

2 1

31 24 176 4.5 6.7 20 8

3 0

0 0

5 26 14 5

2 0

4 7

42 34 170 6.7 8.9 5

5 3

0 0

0 7

14 16 2

2 2

1 5

14 14 90 8.9 11.2 4

4 2

0 0

0 2

8 5

6 1

3 2

6 8

4 55 11.2 13.4 2

1 0

0 0

2 7

8 0

0 2

2 4

7 35 13.4 17.9 0

0 1

0 0

1 7

14 6

5 4

5 1

4 48 17.9 22.4 0

0 0

5 1

2 1

1 0

0 10 22.4 29.1 0

0 0

2 0

0 0

0 2

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 57 47 35 11 1

2 25 75 84 56 19 20 22 36 107 94 691 10/1/2017 1/1/2018 97.9%

+

t t

+

t

+

t T

T I

I I

t t

+

t

+

t I

t t

I I

I t

t t

t t t

t t

32 Table 5-4 4th Quarter Average, 33 Ft AGL (Continued)

Stability Class:

E Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 9

3 3

2 1

4 7

5 5

13 8

14 15 12 107 2.2 4.5 14 10 3

2 1

4 5

11 12 5

17 11 11 11 23 40 180 4.5 6.7 8

5 4

2 0

0 7

13 18 7

9 2

1 9

25 14 124 6.7 8.9 5

2 3

0 0

0 8

15 6

7 4

0 3

8 22 6

89 8.9 11.2 2

1 0

0 0

0 4

9 12 10 11 1

0 6

11 2

69 11.2 13.4 0

2 0

0 0

0 1

3 6

6 12 2

3 2

1 0

38 13.4 17.9 0

4 0

0 0

4 10 10 8

3 1

2 2

0 44 17.9 22.4 0

6 0

0 0

0 1

2 1

0 0

0 10 22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 38 33 13 7

4 6

26 59 72 52 67 32 27 52 99 74 661 Stability Class:

F Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 4

1 3

1 1

0 1

2 3

1 3

1 6

7 10 7

51 2.2 4.5 16 8

3 1

0 0

0 8

17 15 5

12 12 14 13 19 143 4.5 6.7 8

2 0

0 1

0 2

4 6

12 4

1 3

10 9

16 78 6.7 8.9 1

0 0

0 3

9 11 6

1 1

2 4

4 1

43 8.9 11.2 0

0 0

9 9

3 0

0 0

1 0

0 22 11.2 13.4 0

0 0

2 0

4 0

0 1

0 0

0 7

13.4 17.9 0

0 0

0 2

0 0

0 2

17.9 22.4 0

0 0

0 2

0 0

0 2

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 29 11 6

2 2

0 6

34 50 41 13 15 24 36 36 43 348 Stability Class:

G Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 13 3

4 3

0 0

0 6

5 1

6 5

5 6

7 8

72 2.2 4.5 10 4

3 0

0 0

4 8

9 5

6 3

10 9

21 24 116 4.5 6.7 3

0 1

1 0

0 2

6 12 4

3 1

1 2

6 16 58 6.7 8.9 0

0 0

8 6

3 1

0 0

1 2

3 24 8.9 11.2 0

0 0

3 2

1 0

0 1

0 8

11.2 13.4 0

0 0

1 0

0 0

0 1

13.4 17.9 0

0 0

0 2

1 0

0 0

0 3

17.9 22.4 0

0 0

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 26 7

8 4

0 0

6 32 36 15 16 9

17 18 37 51 282 Stability Class:

All Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 35 13 21 11 5

3 7

19 30 16 20 21 25 36 39 34 335 2.2 4.5 58 45 24 10 1

5 15 44 58 30 29 32 35 35 88 108 617 4.5 6.7 39 18 8

3 1

0 16 49 50 28 18 4

9 28 82 82 435 6.7 8.9 12 10 6

0 0

0 18 46 39 18 8

3 6

18 42 26 252 8.9 11.2 7

5 5

0 0

0 6

29 28 20 12 4

3 13 20 7

159 11.2 13.4 2

3 1

0 0

0 1

8 16 19 12 2

6 4

5 7

86 13.4 17.9 0

6 2

0 0

5 26 31 15 8

8 9

3 4

117 17.9 22.4 0

6 0

0 0

0 3

8 2

2 1

1 0

0 23 22.4 29.1 0

0 0

2 0

0 0

0 2

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 153 106 67 24 7

8 63 200 250 172 116 76 93 144 279 268 2026 Periods of Calm while in Stability Class:

A B

C D

E F

G Total 0

0 0

53 35 21 28 137 r

T T

T

+

1 t

t t

t

+

I I

~

1 t t t

t t t

t t

+

I I

~

1 t

t t

t f _f __

i I. t t

. t t

33 Table 5-5 Year 2017, 33 Ft AGL Elevation:

33 Start Date:

Total number of Periods: 8760 Period: 2017 Annual Stop Date:

Periods of No Data Recovery:

728 System Percent Data Recovery:

Stability Class:

A Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

1 1

0 0

0 2

4.5 6.7 0

1 0

0 2

0 0

2 0

0 0

0 6

6.7 8.9 0

1 1

0 0

0 2

0 0

0 4

8.9 11.2 0

1 1

0 0

1 1

0 1

0 5

11.2 13.4 0

0 0

1 1

13.4 17.9 0

0 0

0 1

0 0

0 3

1 5

17.9 22.4 0

0 0

1 2

0 3

22.4 29.1 0

0 0

2 0

0 0

0 2

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 0

4 3

1 0

0 2

0 1

4 0

1 3

1 6

2 28 Stability Class:

B Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 0

0 0

2.2 4.5 0

1 0

0 0

0 1

4.5 6.7 2

3 0

0 0

0 1

0 0

2 8

6.7 8.9 0

5 2

2 0

0 0

1 0

2 12 8.9 11.2 1

2 2

0 0

1 4

0 0

0 2

1 0

1 14 11.2 13.4 2

0 0

0 6

2 0

0 0

1 0

0 11 13.4 17.9 0

0 0

0 1

9 1

0 0

0 4

1 16 17.9 22.4 0

0 0

1 1

0 1

0 3

0 6

22.4 29.1 0

0 0

1 0

0 0

0 3

0 4

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 5

11 4

2 0

0 1

1 11 13 2

0 3

3 10 6

72 Stability Class:

C Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 4

1 0

0 1

0 0

0 1

2 9

2.2 4.5 16 9

4 4

4 2

1 1

1 0

0 0

3 6

52 4.5 6.7 9

16 18 6

4 0

0 4

11 2

0 0

1 2

4 8

85 6.7 8.9 5

11 5

1 1

3 1

10 25 5

2 1

2 0

1 5

78 8.9 11.2 5

0 5

3 0

0 1

8 11 9

0 6

5 2

2 5

62 11.2 13.4 3

0 1

0 0

0 18 11 2

5 3

0 2

1 46 13.4 17.9 1

2 1

0 0

0 15 22 5

3 5

4 1

1 60 17.9 22.4 0

0 0

6 2

0 1

4 1

0 14 22.4 29.1 0

0 0

5 2

1 0

1 1

0 10 29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 43 39 34 14 10 5

3 23 81 60 14 16 17 13 16 28 416 Stability Class:

D Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 27 19 29 26 16 13 19 26 27 18 17 12 9

21 35 25 339 2.2 4.5 41 50 56 43 17 29 41 80 62 30 12 16 18 16 67 64 642 4.5 6.7 44 18 32 30 12 11 47 82 65 23 9

12 9

20 80 55 549 6.7 8.9 18 12 15 18 5

7 42 55 52 17 11 13 15 13 35 30 358 8.9 11.2 14 10 4

4 3

2 19 26 42 28 13 12 9

26 19 14 245 11.2 13.4 7

1 0

0 0

0 5

9 34 28 8

4 6

9 28 17 156 13.4 17.9 10 0

1 0

0 0

0 4

20 32 15 21 9

19 22 16 169 17.9 22.4 2

0 0

0 3

19 7

10 2

9 17 1

70 22.4 29.1 0

0 0

2 3

4 1

1 0

3 1

0 15 29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 163 110 137 121 53 62 173 284 308 199 93 101 77 136 304 222 2543 1/1/2017 1/1/2018 91.7%

T T I t

t t

t

+

I I

t t

t t t t t t I

I

34 Table 5-5 Year 2017, 33 Ft AGL (Continued)

Stability Class:

E Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 19 14 8

10 3

8 8

22 30 17 19 30 21 33 38 26 306 2.2 4.5 40 30 17 8

5 13 19 38 47 29 33 39 40 44 83 63 548 4.5 6.7 24 9

19 3

4 6

24 56 39 26 20 13 15 33 73 39 403 6.7 8.9 6

3 10 2

0 0

27 49 38 21 16 11 17 35 54 19 308 8.9 11.2 3

1 1

1 0

1 20 31 39 25 23 4

19 38 35 11 252 11.2 13.4 3

3 0

0 0

0 2

10 29 22 24 9

15 22 21 7

167 13.4 17.9 5

4 0

0 0

13 23 30 20 9

9 30 42 11 196 17.9 22.4 0

6 0

0 0

0 2

13 3

0 2

9 5

6 46 22.4 29.1 0

0 0

7 0

0 0

0 7

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 100 70 55 24 12 28 100 219 247 190 158 115 138 244 351 182 2233 Stability Class:

F Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 14 9

10 6

3 6

11 15 15 16 11 10 17 15 27 21 206 2.2 4.5 38 35 17 7

1 4

8 38 41 36 21 28 26 39 39 51 429 4.5 6.7 12 13 11 3

3 1

16 56 48 27 9

8 12 23 31 40 313 6.7 8.9 2

0 2

0 0

0 11 49 25 11 5

3 9

12 16 4

149 8.9 11.2 0

0 0

0 4

27 15 8

0 4

4 4

8 1

75 11.2 13.4 0

0 0

0 2

6 3

5 0

0 1

5 2

0 24 13.4 17.9 0

0 0

4 8

4 0

0 0

1 2

0 19 17.9 22.4 0

0 0

0 3

1 0

0 0

0 4

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 66 57 40 16 7

11 52 195 158 108 46 53 69 99 125 117 1219 Stability Class:

G Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 29 23 23 13 10 3

9 15 20 11 13 10 14 11 17 23 244 2.2 4.5 48 42 48 9

0 2

22 32 35 15 13 5

19 19 55 50 414 4.5 6.7 6

7 16 5

0 0

7 36 39 14 6

3 2

5 37 30 213 6.7 8.9 0

0 2

0 0

0 1

25 23 13 2

0 1

2 13 8

90 8.9 11.2 0

0 0

12 3

2 1

1 4

0 26 11.2 13.4 0

0 0

4 0

0 0

1 0

0 5

13.4 17.9 0

0 0

4 3

1 0

0 0

0 8

17.9 22.4 0

0 0

2 1

0 0

0 3

22.4 29.1 0

0 0

29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 83 72 89 27 10 5

39 130 124 56 35 20 37 39 126 111 1003 Stability Class:

All Wind Speed Min Max N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW TOTAL 1.0 2.2 93 66 70 55 33 30 47 78 92 62 60 62 61 80 118 97 1104 2.2 4.5 183 168 143 71 27 50 91 189 186 110 80 88 103 118 247 234 2088 4.5 6.7 97 67 96 48 23 18 97 234 202 94 44 36 39 83 225 174 1577 6.7 8.9 31 32 37 23 6

10 82 188 163 67 36 28 46 63 119 68 999 8.9 11.2 23 14 13 8

3 3

44 105 114 72 37 29 41 72 69 32 679 11.2 13.4 15 4

1 0

0 0

9 29 90 68 34 18 25 38 53 26 410 13.4 17.9 16 6

2 0

0 0

0 25 71 98 41 33 23 54 74 30 473 17.9 22.4 2

6 0

0 0

2 9

40 13 10 6

23 28 7

146 22.4 29.1 0

0 0

2 3

19 3

2 0

4 5

0 38 29.1 40.3 0

0 0

40.3 90.0 0

0 0

TOTALS 460 363 362 205 92 111 370 852 930 630 348 306 344 535 938 668 7514 Periods of Calm while in Stability Class:

A B

C D

E F

G Total 2

0 0

137 134 97 148 518 r

T T

r T

T T

T t

t t t t t t

t t

I I

t t t t

+

t t

t t t t t t

t t

I I

I t t t I

35 6.0 Dose Assessment -- IMPACT ON MAN Liquid Effluents - There were no liquid discharges from the radwaste processing system to the Columbia River during calendar year 2017. 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 required and defined in the ODCM. Table 6-5 shows the highest calculated doses at and beyond the site boundary for Beta and Gamma air dose, skin dose, total body dose, and maximum organ dose. Table 6-6 provides the population collective dose within a 50-mile radius, and was 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 also provides the annual average individual doses associated with each pathway based on the population within 50 miles. 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 Generating 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 2017 Land Use Census identified two broad leaf vegetable gardens but no milking animals within the 5-mile radius.

Cattle and horses were observed 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. This category does include persons who use portions of the site for recreational, occupational or other purposes not associated with the plant.

Dose was evaluated to Members of the Public that were not identified per the criteria of the 2017 Land Use Census. This includes non-Energy Northwest employees that work East of the site, in building associated with sites 1 and 4. The maximum dose from gaseous effluents to these individuals was estimated assuming exposure to the plume, inhalation, and ground deposition pathways and an occupancy factor consistent with ODCM section 3 as a bounding condition.

The following table (6.0) shows estimated dose to Members of the Public from gaseous effluents within the site boundary of Columbia Generating Station for a fraction of a year spent at each location.

36 Table 6.0; Dose to Members of the Public within the Site Boundary Location Hours Spent Total Body Dose (mrem)

Thyroid Dose (mrem)

Highest Organ Dose (mrem)

Beta Air Dose (mrad)

Gamma Air Dose (mrad)

WNP-4 Whse.2-4 2.08E+03 4.77E-03 5.13E-03 7.61E-03 3.04E-03 5.91E-03 WNP-1 Bldg 121 2.08E+03 8.17E-03 8.66E-03 1.30E-02 5.15E-03 1.00E-02 DOE Site 618-11 2.08E+03 8.62E-04 1.02E-03 1.37E-03 5.46E-04 1.06E-03 Ashe Substation 2.08E+03 2.07E-02 2.18E-02 3.32E-02 1.34E-02 2.59E-02 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 4.64 mile location in the E direction was 2.43E-01 mrem to the bone. The highest dose to the thyroid was 5.24E-02 mrem. The highest dose to the total body was 5.03E-02 mrem. The highest dose to the skin was 5.17E-02 mrem.

For environmental thermoluminescent dosimeter (TLD) stations at or beyond the site boundary, no significant increase in the average ambient exposure (control) was observed in 2017.

For a Boiling Water Reactor, demonstrating conformance with Appendix I of 10 CFR 50 is generally adequate for demonstrating compliance with 40 CFR 190 when the sources of direct radiation from various sources, including the ISFSI, are indistinguishable from background.

The information contained in Table 6-5 is consistent 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 pathways 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.

37 Table 6-5 Summary of Doses from Gaseous Effluents

1. Maximum Air Dose at the Site Boundary (1.2 miles) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Dose*

Beta air dose (mrad) 4.80E-03 4.41E-03 1.57E-03 1.33E-03 1.06E-02 Gamma air dose (mrad) 9.47E-03 5.29E-03 4.46E-03 3.77E-03 2.07E-02

2. Maximum Air Dose Beyond the Site Boundary 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Dose*

Beta air dose (mrad) 6.55E-04 3.82E-04 1.34E-04 2.39E-04 1.66E-03 Gamma air dose (mrad) 1.29E-03 3.98E-04 3.81E-04 6.77E-04 3.23E-03

3. Maximum Annual Dose at the Site Boundary 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Dose*

Total body dose (mrem) 6.74E-03 6.02E-03 3.23E-03 2.60E-03 1.61E-02 Skin dose (mrem) 1.08E-02 9.77E-03 5.05E-03 4.11E-03 2.58E-02

4. Maximum Annual Dose Beyond the Site Boundary 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Dose*

Total body dose (mrem) 1.52E-02 7.60E-03 1.08E-02 1.65E-02 5.03E-02 Skin dose (mrem) 1.54E-02 7.86E-03 1.09E-02 1.66E-02 5.17E-02

5. Maximum Organ Dose at the Site Boundary (1.2 miles) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Cumulative*

Maximum Organ dose (mrem) 1.08E-02 9.77E-03 5.05E-03 4.11E-03 2.58E-02

6. Maximum Organ Dose Beyond the Site Boundary 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Cumulative*

Maximum Organ dose (mrem) 7.37E-02 3.64E-02 5.34E-02 8.19E-02 2.43E-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

38 estimate uses the radionuclide mix and release rate for that period along with an estimate of the dispersion in air and deposition on ground and vegetation calculated by the NRC computer 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 prospective dose component arising from retention in the body beyond the period of environmental exposure.

Table 6-6 50-Mile Population Dose from Gaseous Effluents A. 50-mile population collective dose Exposure Total Body Max. Organ Pathway (person-rem)

(person-rem)

Plume 1.15E-02 1.15E-02 Ground 2.42E-03 2.42E-03 Inhalation 2.06E-03 1.84E-05 Vegetables 3.37E-01 1.67E+00 Milk 1.50E-01 7.46E-01 Meat 1.06E-01 5.29E-01 Total 6.09E-01 2.96E+00 B. Average Individual*

Exposure Total Body Max. Organ Pathway (mrem)

(mrem)

Plume 2.56E-05 2.56E-05 Ground 5.40E-06 5.40E-06 Inhalation 4.59E-06 4.10E-08 Vegetables 7.52E-04 3.72E-03 Milk 3.35E-04 1.66E-03 Meat 2.36E-04 1.18E-03 Total 1.36E-03 6.60E-03

These values are derived by dividing the 50-mile population collective doses by the population within 50 miles of Columbia Generating Station (448,383). The population estimate is based on the 2010 census 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.

39 7.0 REVISIONS TO THE ODCM There was one change to the ODCM approved by the Plant Operations Committee during 2017.This change was to remove the word isokinetic from the description of the Main Plant Vent (Reactor Building Stack) monitoring system.

In January of 2018 the new Main Plant Vent Monitoring system was placed into service and the change to the ODCM was implemented as Amendment number 57.

The ODCM is included as an enclosure to the letter transmitting this "Radioactive Effluent Release Report in compliance with Columbia Technical Specification 5.5.1.

8.0 REVISIONS TO THE PROCESS CONTROL PROGRAM (PCP)

The PCP is maintained as a Plant Operations Committee approved procedure, SWP-RMP-02. There were no changes to the PCP in 2017.

9.0 NEW OR DELETED LOCATIONS FOR DOSE ASSESSMENTS AND/OR ENVIRONMENTAL MONITORING LOCATIONS The 2017 5-Mile Land Use Census (LUC) did not identify any necessary changes to locations for dose assessments or environmental monitoring locations.

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 2017.

11.0 Errata The Curies of Tritium reported as disposed of in the Dry Active Waste (DAW) category of the Solid Radwaste section of the Annual Radioactive Effluent Release Report for calendar year 2016 was over reported. The corrected annual cumulative Curies of DAW disposed of in 2016 is 4.77E-01. Section 4 of the 2016 Annual Radiological Effluent Release Report (ARERR) is included as an attachment to this report with revision bars indicating where the changes occurred.

40.0 - Correction to 2016 CGS ARERR The errata are only within section 4.0 of the 2016 CGS ARERR, so the pages of section 4.0 are included in their entirety in this attachment with revision bars.

41 4.0 Solid Radwaste This section of the annual effluent report provides information required by the Columbia Generating Station Offsite Dose Calculation Manual and recommended by Nuclear Regulatory Commission Regulatory Guide 1.21, Revision 1 (1974).

Solid Radwaste Information required by the Offsite Dose Calculation Manual January -- December 2016 Class A

1.

Container Volumes (ft3) 5 gallon pail 0.80 55 gallon drum 7.50 B-25 Steel Box 96.0 PL8-120 Polyethylene HIC (SERDS) 120 B-88 Steel Box 128 EL-142 Polyethylene HIC 132 ES-190 Steel Liner 170 PL14-170 Polyethylene HIC (SERDS) 171 14-170 Steel Liner (SERDS) 180 20 ft C-Van 1280

2.

Total Curies 1.52E+02 Curies

42

3.

Principal Radionuclides Nuclide Curies Percent Co-60 8.19E+01 5.40E+01 Ba-140 1.40E-01 9.24E-02 Co-58 1.93E+00 1.27E+00 C-14 1.38E+00 9.13E-01 Zn-65 9.88E+00 6.52E+00 Mn-54 9.33E+00 6.15E+00 I-131 1.18E+00 7.78E-01 Ag-110m 2.84E-01 1.88E-01 Pu-241 1.00E-02 6.63E-03 Pu-238 1.04E-04 6.88E-05 Pu-239 8.37E-05 5.52E-05 Am-241 7.12E-05 4.70E-05 Fe-55 3.80E+01 2.51E+01 Cm-243 3.65E-05 2.41E-05 Ce-141 2.69E-03 1.77E-03 Sb-124 2.79E-03 1.84E-03 Cm-242 1.29E-04 8.52E-05 Cs-137 4.77E-01 3.15E-01 Sr-90 1.32E-02 8.73E-03 Ni-63 6.54E+00 4.31E+00 H-3 1.94E-01 1.28E-01 Co-57 1.46E-02 9.61E-03 Tc-99 7.57E-05 5.00E-05 Tc-99m 0.00E+00 0.00E+00 I-129 2.07E-06 1.36E-06 Nb-95 2.52E-02 1.66E-02 Sb-125 1.67E-03 1.10E-03 Cr-51 1.65E-01 1.09E-01 La-140 0.00E+00 0.00E+00 Fe-59 6.55E-02 4.32E-02 Cs-134 1.87E-02 1.23E-02

43

4.

Source Resins 1.51E+02 Ci DAW 4.77E-01 Ci Irradiated Components None Other (Sealed Source, Mixed Waste, & Liquid Waste) 2.10E-02 Ci

5.

Type of Container All containers shipped as Limited Quantity, LSA, SCO or radioactive material in IP-1, IP-2, Type A, or Type B (including casks) as appropriate

6.

Solidification Agent None Class B There were no Class B shipments made during calendar year 2016.

Class C

1.

Container Volumes (ft3)

TN-RAM Liner 58.0

2.

Total Curies 6.75E+04 Curies

44

3.

Principal Radionuclides Nuclide Curies Percent Co-60 3.28E+04 4.86E+01 Co-58 7.64E+01 1.13E-01 C-14 2.99E+00 4.43E-03 Zn-65 2.12E+01 3.14E-02 Mn-54 9.09E+02 1.35E+00 Ag-110m 5.61E-03 8.31E-06 U-235 9.16E-08 1.36E-10 U-238 2.48E-13 3.67E-16 Pu-238 1.24E-03 1.84E-06 Pu-239 8.16E-06 1.21E-08 Pu-240 3.14E-07 4.65E-10 Pu-241 6.06E-04 8.97E-07 Am-241 5.67E-06 8.40E-09 Fe-55 3.18E+04 4.71E+01 Cm-242 2.89E-06 4.28E-09 Ce-144 4.96E-02 7.35E-05 Cm-243 1.91E-06 2.83E-09 Cm-244 3.07E-08 4.55E-11 Cs-137 1.03E-01 1.53E-04 Sr-89 3.55E-03 5.26E-06 Sr-90 8.50E-02 1.26E-04 Ni-59 3.66E+01 5.42E-02 Ni-63 1.87E+03 2.77E+00 H-3 7.41E-03 1.10E-05 Tc-99 6.11E-04 9.05E-07 I-129 4.74E-05 7.02E-08 Mo-93 4.40E-06 6.52E-09 Nb-94 2.86E-02 4.24E-05 Zr-95 4.76E-10 7.05E-13 Sb-125 3.01E+00 4.46E-03 Cr-51 3.13E+00 4.64E-03 Fe-59 2.33E+00 3.45E-03

45

4.

Source Resins 0 Ci DAW 0 Ci Irradiated Components 6.75E+04 Ci Other (Sealed Source, Mixed Waste, & Liquid Waste) 0 Ci

5.

Type of Container All containers shipped as Type B (including casks).

6.

Solidification Agent None Solid Radwaste Information Recommended by NRC Regulatory Guide 1.21 January -- December 2016 Solid waste shipped offsite for burial or disposal (not irradiated fuel).

7. Type of Waste Waste Stream Category Unit Annual Cumulative Est. Total Error %

A. Spent resins, filter sludge, evaporator bottoms, etc.

m3 Ci 2.17E+02 1.51E+02 2.50E+01%

B. Dry Active Waste m3 Ci 5.43E+01 4.77E-01 2.50E+01%

C. Irradiated Components m3 Ci 8.21E+00 6.75E+04 2.50E+01%

D. Other Waste (Sealed Source, mixed waste, & Liquid Waste) m3 Ci 3.63E+01 2.10E-02 2.50E+01%

46

8. Estimate of major nuclide composition (by type of waste)

a. Dewatered Spent Resins - All Class A Nuclide Curies Percent Co-60 8.17E+01 5.41E+01 Ba-140 1.40E-01 9.27E-02 Co-58 1.76E+00 1.16E+00 C-14 1.38E+00 9.16E-01 Zn-65 9.79E+00 6.48E+00 Mn-54 9.29E+00 6.15E+00 I-131 1.18E+00 7.81E-01 Ag-110m 2.84E-01 1.88E-01 Pu-241 9.67E-03 6.40E-03 Pu-238 1.00E-04 6.65E-05 Pu-239 8.06E-05 5.34E-05 Am-241 6.81E-05 4.51E-05 Fe-55 3.80E+01 2.52E+01 Cm-243 3.52E-05 2.33E-05 Ce-141 2.69E-03 1.78E-03 Sb-124 2.79E-03 1.85E-03 Cm-242 1.24E-04 8.20E-05 Cs-137 4.77E-01 3.16E-01 Sr-90 1.32E-02 8.73E-03 Ni-63 6.53E+00 4.33E+00 H-3 1.91E-01 1.27E-01 Co-57 1.46E-02 9.65E-03 Tc-99 7.56E-05 5.00E-05 Tc-99m 0.00E+00 0.00E+00 I-129 2.06E-06 1.37E-06 Nb-95 2.52E-02 1.67E-02 Sb-125 1.67E-03 1.10E-03 Cr-51 1.65E-01 1.09E-01 La-140 0.00E+00 0.00E+00 Fe-59 6.55E-02 4.33E-02 Cs-134 1.87E-02 1.24E-02

47

b. Dry Active Waste (DAW) - All Class A Nuclide Curies Percent Co-60 1.49E-01 3.13E+01 Co-58 1.74E-01 3.65E+01 Zn-65 9.29E-02 1.95E+01 Mn-54 4.11E-02 8.63E+00 H-3 2.64E-03 5.55E-01 Pu-241 3.75E-04 7.86E-02 Pu-238 3.88E-06 8.13E-04 Pu-239 3.10E-06 6.50E-04 Am-241 3.08E-06 6.46E-04 Cm-243 1.36E-06 2.85E-04 Cm-242 5.26E-06 1.10E-03 Fe-55 1.27E-02 2.67E+00 Sr-90 4.61E-05 9.68E-03 Ni-63 3.53E-03 7.41E-01 C-14 7.08E-05 1.49E-02 Tc-99 1.68E-07 3.52E-05 I-129 4.59E-09 9.64E-07

c. Irradiated Components - All Class C Nuclide Curies Percent Co-60 3.28E+04 4.86E+01 Co-58 7.64E+01 1.13E-01 C-14 2.99E+00 4.43E-03 Zn-65 2.12E+01 3.14E-02 Mn-54 9.09E+02 1.35E+00 Ag-110m 5.61E-03 8.31E-06 U-235 9.16E-08 1.36E-10 U-238 2.48E-13 3.67E-16 Pu-238 1.24E-03 1.84E-06 Pu-239 8.16E-06 1.21E-08 Pu-240 3.14E-07 4.65E-10 Pu-241 6.06E-04 8.97E-07 Am-241 5.67E-06 8.40E-09 Fe-55 3.18E+04 4.71E+01 Cm-242 2.89E-06 4.28E-09 Ce-144 4.96E-02 7.35E-05 Cm-243 1.91E-06 2.83E-09 Cm-244 3.07E-08 4.55E-11 Cs-137 1.03E-01 1.53E-04

48 Sr-89 3.55E-03 5.26E-06 Sr-90 8.50E-02 1.26E-04 Ni-59 3.66E+01 5.42E-02 Ni-63 1.87E+03 2.77E+00 H-3 7.41E-03 1.10E-05 Tc-99 6.11E-04 9.05E-07 I-129 4.74E-05 7.02E-08 Mo-93 4.40E-06 6.52E-09 Nb-94 2.86E-02 4.24E-05 Zr-95 4.76E-10 7.05E-13 Sb-125 3.01E+00 4.46E-03 Cr-51 3.13E+00 4.64E-03 Fe-59 2.33E+00 3.45E-03

d. Other Waste (sealed source, mixed waste, and liquid waste) - All Class A Nuclide Curies Percent Co-60 1.98E-03 9.46E+00 Co-58 2.46E-03 1.17E+01 Zn-65 1.25E-03 5.97E+00 Mn-54 5.52E-04 2.63E+00 H-3 1.45E-02 6.92E+01 Pu-241 4.97E-06 2.37E-02 Pu-238 5.13E-08 2.45E-04 Pu-239 4.11E-08 1.96E-04 Am-241 3.42E-08 1.63E-04 Cm-242 7.18E-08 3.43E-04 Cm-243 1.80E-08 8.59E-05 Fe-55 1.70E-04 8.08E-01 Sr-90 6.09E-07 2.91E-03 Ni-63 4.68E-05 2.23E-01 C-14 9.38E-07 4.47E-03 Fe-59 5.74E-08 2.74E-04 Cr-51 5.55E-07 2.65E-03 Sr-89 9.69E-09 4.62E-05 Tc-99 2.22E-09 1.06E-05 I-129 6.09E-11 2.91E-07

49

9. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 24 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

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

Irradiated Fuel Shipments (Disposition)