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{{#Wiki_filter:N.O.RTHWE:ST Columbia Generating Station Annual Radioactive Effluent Release Report January through December 2010
==REFERENCES:==
10 CFR 50.36a(a)(2) 10 CFR 72.44(d)(3)
CGS Technical Specification 5.6.2 ISFSI Technical Specification 5.4.c Columbia Generating Station Annual Radioactive Effluent Release Report January through December 2010 Energy Northwest Submitted February 2011 Table of Contents
==1.0 INTRODUCTION==
.....................................................................................
1 2.0 LIQUID EFFLUENTS
..............................................................................
1 3.0 GASEOUS EFFLUENTS
.......................................................................
2 Gaseous Effluent Tables ......................................................................
4 Table 3-0 10 CFR Part 50 Appendix I Dose Compliance
.....................
4 Table 3-1 Main Plant Vent Releases ............................................
.5 Table 3-2 Turbine Building Releases ..............................................
7 Table 3-3 Radwaste Building Releases ............................................
9 Table 3-4 Summation of Releases ...................................................
11 Table 3-5 Gaseous Purges and Vents ............................................
12 Table 3-6 Lower Limits of Detection
..............................................
13 4.0 SOLID RADWASTE ..............................................................................
14 Solid Radwaste Information Required by the Offsite Dose Calculation Manual 14 C lass A .......................................................................................
14 C lass B ..........................................................................................
15 C lass C ..........................................................................................
15 Solid Radwaste Information Recommended by NRC Regulatory Guide 1.21 .... 17 Solid waste shipped offsite for burial or disposal (not irradiated fuel) .................
17 Irradiated Fuel Shipments (Disposition)
.................................................
19 5.0 METEOROLOGICAL DATA .................................................................
20 Joint Frequency Distribution Tables for 2010 .........................................
21 Table 5-1 1st Quarter Average, 33 Ft Above Ground Level AGL ............
21 Table 5-2 1st Quarter Average, 245 Ft AGL .....................................
23 Table 5-3 2nd Quarter Average, 33 Ft AGL .....................................
25 Table 5-4 2nd Quarter Average, 245 Ft AGL ...................................
27 Table 5-5 3rd Quarter Average, 33 Ft AGL ....................................
29 Table 5-6 3rd Quarter Average, 245 Ft AGL .......................................
31 Table 5-7 4th Quarter Average, 33 Ft AGL .....................................
33 Table 5-8 4th Quarter Average, 245 Ft AGL ....................................
35 Table 5-9 Year 2010, 33 Ft AGL ......................................................
37 Table 5-10 Year 2010, 245 Ft AGL ................................................
39 Table 5-11 Year 2010 Growing Season, 33 Ft AGL .............................
41 Columbia Generating Station i 2010 Radioactive Effluent Report Columbia Generating Station i 2010 Radioactive Effluent Report 6.0 DOSE ASSESSMENT
-- IMPACT ON MAN .........................................
43 Dose Tables ....................................................................................
46 Table 6-1 Summary of Doses from Gaseous Effluents
......................
46 Table 6-2 50-Mile Population Dose from Gaseous Effluents
...............
49 7.0 REVISIONS TO THE ODCM .................................................................
50 8.0 REVISIONS TO THE PROCESS CONTROL PROGRAM (PCP) ..........
50 9.0 NEW OR DELETED LOCATIONS FOR DOSE ASSESSMENTS AND/OR ENVIRONMENTAL MONITORING LOCATIONS
..................
50 10.0 MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS .............................................
50 Columbia Generating Station ii 2010 Radioactive Effluent Report
==1.0 Introduction==
This report has been prepared in compliance with Parts 50 and 72 of Title 10 of the Code of Federal Regulations (CFR), specifically 10 CFR 50.36a(a)(2) and 10 CFR 72.44(d)(3), Independent Spent Fuel Storage Installation (ISFSI) Technical Specification 5.4.c, 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 radwaste released from Columbia Generating Station during calendar year 2010. 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 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 Columbia Generating Station during calendar year 2010. The last planned discharge took place in 1998.In 2010, there were no leaks to the environment of radioactive liquids. The Groundwater Monitoring Program did not indicate any increase in groundwater tritium levels that could be attributed to the operation of Columbia Generating Station.During 2010, the Columbia Generating Station Sanitary Waste Treatment Facility (SWTF) received tritiated water from the Fast Flux Test Facility (FFTF) on the Hanford Site. This water was pumped by FFTF (at between 500 -2,000 gallons/day) from wells on the Hanford Site and ultimately sent to the CGS SWTF.The concentration of tritium varied between 2,000 and 11,000 picoCuries (pCi) per liter. The total combined input into the SWTF averages 20,000 gallons/day from all sources. Approximately 1.5 -2 million gallons of this water is discharged to the ground each year. Assuming an average concentration of 8,000 pCi/liter from FFTF, no evaporation, and no tritium absorption or rainout/washout addition from routine effluent gaseous releases, the released water would contain conservatively 640 pCi/liter and would total about 4.85E9 pCi (0.005 Ci) of tritium.Columbia Generating Station I 2010 Radioactive Effluent Report 3.0 Gaseous Effluents The gaseous radwaste effluents from Columbia Generating Station were released from three (3) 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.
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 radioisotope is not positively identified at levels greater than the Minimum Detectable Activity (MDA), a value of zero is used for release concentrations and offsite dose assessments.
Table 3-6 contains the Lower Limit of Detection (LLD)values corresponding to the sampling methods and analytical instruments used for each principal radioisotope.
Dose calculations were performed for releases using the NRC XOQDOQ and GASPAR II computer programs and parameter values as described in the Offsite Dose Calculation Manual (ODCM) with some exceptions.
A Self-Assessment identified opportunities for improving the accuracy of values presented in ODCM Table 3-13 which describe the characteristics of gaseous effluent release points.The following table (3.0-A) shows values used as input to XOQDOQ which differ from those presented in the ODCM table.Columbia Generating Station 2 2010 Radioactive Effluent Report Table 3.0-A: Deviations from InDut Parameters in ODCM Table 3-13 Reactor Radwaste Bldg Bldg ITurbine Bldg Vent Velocity (m/s)Value in ODCM 10.9 1 3.4 I 19.5 lValue used in XOQDOQ 10.9 0 21.0 XOQDOQ requires the vertical exit velocity.
Release from the Radwaste bldg is horizontal.
Release from the Turbine bldg is vertical and was recalculated.
Vent Inside Diameter (m)IWalue in ODCM I 2.1 I3.8 I 3.3 Value used in XOQDOQ 2.1 0 3.0 NUREG/CR-2919 recommends a value of 0 for ground mode release points (Radwaste bldg). The Turbine bldg value was recalculated.
Average annual heat flow from release point [Heat Emission Rate] (cal/sec)IValue in ODCM I 1.06E+06 I 2.90E+06 t 9.10E+05 IValue used in XOQDOQ 1.59E+05 1.04E+05 8.02fE+05 The heat emission rates were recalculated The XOQDOQ program was also provided with updated terrain elevations out to a 25-mile radius of Columbia Generating Station in each sector. The above changes allowed better modeling of plume vertical momentum and buoyancy resulting in more accurate dispersion and deposition values from those presented in ODCM Tables 3-3, 3-10, and 3-11. The ODCM is in the process of revision to reflect the above changes.Quarterly and annual doses to the potentially highest-exposed Member of the Public 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 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 for Members of the Public within the site boundary.
The results are discussed and tabulated in Section 6.0.It is estimated that approximately 3.25E-03 Curies of tritium were released through unmonitored vents of the heating steam system within and outside the main power block (Turbine, Radwaste, Reactor, and General Services buildings).
No additional spent fuel storage containers (SFSC) were added to the ISFSI facility in calendar year 2010. A total of twenty seven (27) SFSCs were in place in the ISFSI facility at the end of 2010. All SFSCs are Operable and, as such, are performing as designed.
Based on compliance with ISFSI Technical Specification Columbia Generating Station 3 2010 Radioactive Effluent Report Columbia Generating Station 3 2010 Radioactive Effluent Report 3.1.1 during 2010, there are no effluents from this facility.
There were twelve SFSCs loaded in 2008 that are considered Operable (i.e. no measurable leakage)but nonconforming based on the vendor failing to leak test the canisters during fabrication.
This was communicated to the NRC via Energy Northwest letter, G02-10-157, submitted October 27, 2010.Incidents of effluent monitor inoperability greater than 30 days: During 2010, the low range reactor building effluent monitor failed on high temperature.
Following repair, it was noted that the temperature cycling damaged the semiconductor detector.
A spare detector was installed, but the spare detector would not pass calibration.
Following expedited repair of the initially removed detector and installation of a new cryostat, the detector would not cool down to operating temperature.
The detector and cryostat were returned to the vendor for repair. Prior to returning to service, failure of a transformer (E-TR-7BC) resulted in extended out of service time. The monitor was out of service from 2/12/10 to 5/7/10 (about 84 days).Gaseous Effluent Tables Table 3-0 10 CFR Part 50 Appendix I Dose Compliance Report Period: January -- December 2010 I 1st Quarter 12nd Quarter 3rd Quarter I4th Quarter I Year*Noble Gas Gamma Air Dose (mrad) 1.28E-02 1. 16E-02 1.65E-02 1. 15E-02 5.15E-02 ODCM Limit 5 5 5 5 10% of Limit 2.56E-01 2.32E-01 3.30E-01 2.30E-01 5.15E-01 Beta Air Dose (mrad) 4.52E-03 4.09E-03 5.82E-03 4.04E-03 1.82E-02 ODCM Limit 10 10 10 10 20% of Limit 4.52E-02 4.09E-02 5.82E-02 4.04E-02 9.1OE-02 Iodine-131, Iodine-133, Tritium, and Particulates with half-lives greater than eight days.Organ Dose (mrem) 1.40E-02 1. 25E-02 1.77E-02 1.25E-02 5.57E-02 ODCM Limit 7.5 7.5 7.5 7.5 15% of Limit 1.86E-01 1.67E-01 2.37E-01 1.66E-01 3.71E-01* 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, meteorological data (quarterly joint frequency distribution (JFD) tables vs. annual JFD tables), receptor age, target organ, and characteristics of the emitted radionuclides.
In the above chart, all dose is calculated to a hypothetical person at the site boundary.Columbia Generating Station 4 2010 Radioactive Effluent Report Table 3-1 Main Plant Vent Releases Fission Gases and lodines Report Period: January -- December 2010 Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) (Ci) (Ci) (Ci) (Ci)A. Fission gases krypton-85
<MDA <MDA <MDA <MDA <MDA krypton-85m
<MDA 1.51E-01 <MDA <MDA 1.51E-01 krypton-87
<MDA <MDA <MDA <MDA <MDA krypton-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 Others argon-41 3.86E+O1 4.97E+01 4.27E+O1 3.89E+O1 1.70E+02 Total for period
* 3.86E+O 1 4.99E+01 4.27E+0 1 3.89E+01 1.70E+02 B. Iodines iodine-131
<MDA <MDA <MDA <MDA <MDA iodine-132
<MDA <MDA <MDA <MDA <MDA iodine-133
<MDA <MDA 1.11E-05 <MDA 1.11E-05 iodine-134
<MDA <MDA <MDA <MDA <MDA iodine-135
<MDA <MDA <MDA <MDA <MDA Total for period
* 0.OOE+00 0.OOE+00 1.11 E-05 0.OOE+00 1.1IE-05 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 5 2010 Radioactive Effluent Report Table 3-1 Main Plant Vent Releases (Continued)
Particulates and Tritium Report Period: January--
December 2010 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) (Ci) (Ci) (Ci) (0i)C. Particulates strontium-89 8.87E-07 7.73E-07 7.95E-07 6.50E-07 3.1 1E-06 strontium-90
<MDA <MDA <MDA <MDA <MDA cesium-134
<MDA <MDA <MDA <MDA <MDA cesium-137
<MDA <MDA <MDA <MDA <MDA barium-lanthanum-140 <MDA <MDA <MDA <MDA <MDA silver- I10m <MDA <MDA <MDA <MDA <MDA cerium- 141 <MDA <MDA <MDA <MDA <MDA cerium- 144 <MDA <MDA <MDA <MDA <MDA cobalt-58
<MDA <MDA <MDA <MDA <MDA cobalt-60 2.11E-05 4.38E-06 <MDA 2.31E-06 2.78E-05 iron-59 <MDA <MDA <MDA <MDA <NMDA manganese-54
<MDA <MDA <MDA <MDA <MDA zinc-65 3.32E-06 2.60E-06 <MDA <MDA 5.91E-06 chrome-51
<MDA <MDA <MDA <MDA <MDA antimony-125 <MDA <MDA <MDA <MDA <MDA Total for period* 2.54E-05 7.75E-06 7.95E-07 2.96E-06 3.69E-05 Others with T 1/2 < 8 days arsenic-76
<MDA <MDA <MDA <MDA <MDA bromine-82
<MDA <MDA <MDA <MDA <MDA copper-64
<MDA <MDA <MDA <MDA <MDA molybdenum-99
<MDA <MDA <MDA <MDA <MDA rhenium- 188 <MDA <MDA <MDA <MDA <NMDA sodium-24
<MDA <MDA <MDA <MDA <MDA technetium-99m
<MDA <MDA <MDA <MDA <MDA zinc-69m <MDA <MDA <MDA <MDA <MDA Total with T 1/2 < 8 days* 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 D. Tritium tritium 8.64E-01 I 1.26E+00 1 1.16E+00 7.91E-01 I 4.08E+00 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 6 2010 Radioactive Effluent Report Table 3-2 Turbine Building Releases Fission Gases and Iodines Report Period: January -- December 2010[ 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) PC) (Ci) (Ci) (Ci)A. Fission gases krypton-85
<MDA <MDA <MDA <MDA <MDA krypton-85m
<MDA <MDA <MDA <MDA <MDA krypton-87
<MDA <MDA <MDA <MDA <MDA krypton-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 Others argon-41 3.32E+00 <MDA 1.29E+01 <MDA 1.62E+01 Total for period
* 3.32E+00 O.OOE+00 1.29E+01 0.OOE+00 1.62E+01 B. Iodines iodine-131 2.87E-06 3.32E-05 2.86E-05 8.23E-05 1.47E-04 iodine-132
<MDA <MDA <MDA <MDA <MDA iodine-133
<MDA 2.23E-04 1.89E-04 4.07E-04 8.18E-04 iodine-134
<MDA <MDA <MDA <MDA <MDA iodine-135
<MDA <MDA <MDA <MDA <MDA Total for period
* 2.87E-06 2.56E-04 2.17E-04 4.89E-04 9.65E-04 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 7 2010 Radioactive Effluent Report Table 3-2 Turbine Building Releases (Continued)
Particulates and Tritium Report Period: January -- December 2010 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) (Ci) (Ci) (Ci) (Ci)C. Particulates strontium-89 1.44E-05 1.71E-05 2.26E-05 2.48E-05 7.89E-05 strontium-90
<MDA <MDA <MDA <MDA <MDA cesium-134
<MDA <MDA <MDA <MDA <MDA cesium-137
<MDA <MDA <MDA <MDA <MDA barium-lanthanum-140 <MDA <MDA <MDA <MDA <MDA cerium- 141 <MDA <MDA <MDA <MDA <MDA cerium- 144 <MDA <MDA <MDA <MDA <MDA cobalt-58
<MDA <MDA <MDA <MDA <MDA cobalt-60
<MDA 1.1OE-05 <MDA 4.76E-05 5.85E-05 iron-59 <MDA <MDA <MDA <MDA <MDA manganese-54
<MDA <MDA <MDA <MDA <MDA zinc-65 <MDA <MDA <MDA 2.07E-04 2.07E-04 chrome-51
<MDA <MDA <MDA <MDA <MDA Total for period* 1.44E-05 2.8 1E-05 2.26E-05 2.79E-04 3.44E-04 Others with T 1/2 < 8 days molybdenum-99
<MDA <MDA <MDA <MDA <MDA Total with T 1/2 < 8 days* 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.00E+00 D. Tritium tritium 6.36E+00 I 6.23E+00 I 8.48E+00 I 7.10E+00 I 2.82E+01 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 8 2010 Radioactive Effluent Report Table 3-3 Radwaste Building Releases Fission Gases and lodines A. Fission gases krypton- 85 <MDA <MDA <MDA <MDA <MDA krypton- 85m <MDA <MDA <MDA <MDA <MDA krypton-87
<MDA <MDA <MDA <MDA <MDA krypton- 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 Others argon-41 <MDA <MDA <MDA <MDA <MDA Total for period
* O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 B. lodines iodine-131
<MDA <MDA <MDA <MDA <MDA iodine-132
<MDA <MDA <MDA <MDA <MDA iodine-133
<MDA <MDA <MDA <MDA <MDA iodine-134
<MDA <MDA <MDA <MDA <MDA iodine-135
<MDA <MDA <MDA <MDA <MDA Total for period* O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 MDA = Less than mass or volume).the "a posteriori" minimal detectable activity (microcuries per unit* MDA values are not included in the totals.Columbia Generating Station 9 2010 Radioactive Effluent Report Columbia Generating Station 9 2010 Radioactive Effluent Report Table 3-3 Radwaste Building Releases (Continued)
Particulates and Tritium Report Period: January--
December 2010 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) (Ci) (Ci) (Ci) (Ci)C. Particulates strontium-89 1.35E-07 9.74E-08 2.49E-07 3.36E-07 8.18E-07 strontium-90
<MDA <MDA <MDA <MDA <MDA cesium-134
<MDA <MDA <MDA <MDA <MDA cesium-137
<MDA <MDA <MDA <MDA <MDA barium-lanthanum-140 <MDA <MDA <MDA <MDA <MDA cerium- 141 <MDA <MDA <MDA <MDA <MDA cerium- 144 <MDA <MDA <MDA <MDA <MDA cobalt-58
<MDA <MDA <MDA <MDA <MDA cobalt-60 3.05E-06 <MDA 1.18E-06 <MDA 4.23E-06 iron-59 <MDA <MDA <MDA <MDA <MDA manganese-54 1.84E-06 <MDA <MDA <MDA 1.84E-06 zinc-65 6.87E-07 <MDA 7.07E-07 <MDA 1.39E-06 Total for period* 5.72E-06 9.74E-08 2.13E-06 3.36E-07 8.28E-06 Others with T 1/2 < 8 days molybdenum-99
<MDA <MDA <MDA <MDA <MDA Total with T 1/2 < 8 days* O.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 D. Tritium tritium 1.03E-01 1.34E-01 1.79E-01 1.OOE-01 5.16E-01 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 10 2010 Radioactive Effluent Report Columbia Generating Station 10 2010 Radioactive Effluent Report Table 3-4 Summation of Releases Gaseous Effluents Report Period: January -- December 2010 iii I I i St I 1 st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter Year %E rror A. Fission and activation gases Total release (Ci) 4.19E+01 4.99E+01 5.56E+01 3.89E+01 1.86E+02 4.30E+01 Average release rate (pCVs) 5.33E+00 6.34E+00 7.07E+00 4.95E+00 5.93E+00 Percent of ODCM limit (%)I 9.78E-03 8.83E-03 1.26E-02 1.05E-02 9.82E-03 B. lodines Total 1-131 (Ci) 2.87E-06 3.32E-05 2.86E-05 8.23E-05 1.47E-04 4.60E+01 Average release rate (pCVs) 3.65E-07 4.22E-06 a63E-06 1.05E-05 4.67E-06 Percent of ODCM limit (%) 1.1 7E-07 1.26E-06 1.43E-06 3.13E-06 1.45E-06 C. Particulates Particulates with half-lives
>8 days (Ci) 4.55E-05 3.59E-05 2-55E-05 2.83E-04 3.90E-04 Average release rate (pCVs) 5.79E-06 4.57E-06 325E-06 3.60E-05 1.24E-05 Percent of ODCM limit (%) 3.44E-06 5.15E-07 6.57E-07 1.63E-06 1.37E-06 Gross alpha radioactivity (Ci) 9.44E-07 4.81 E-07 5.37E-07 1.37E-06 3.33E-06 7.30E+01 D. Tritium_Total release_(Ci) 7.33E+00 7.62E+00 9.82E+00 8.OOE+00 3.28E+01 2.60E+01 Average release rate (Cs)j 9.32E-01 9.70E-01 1.25E+00 1.02E+00 1.04E+00 Percent of ODCM limit (%) 5.41E-05 3.17E-05 299E-05 1.90E-05 2.04E-05 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).ODCM release rate limits are based on dose rate. 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 1-131, particulates, and tritium the dose rate limit is less than or equal to 1500 mrem/year to any organ.The ODCM dose factors and the highest site boundary dispersion value for each period were used in the calculation.
* Measurement errors are sample-specific.
The values reported represent an approximate overall error. The major contributors of this error are measurements associated with sample volume, release point flow rates, and estimates of plateout factors.Columbia Generating Station 11 2010 Radioactive Effluent Report Table 3-5 Gaseous Purges and Vents Report Period: January -- December 2010 Total Maximum Minimum Mean Type Number Time (hr.) Time (hr.) Time (hr.) Time (hr.)Purge 0.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Vent 2.60E+01 2.97E+01 1.75E+00 4.83E-0l1
: 1. 14E+00 Columbia Generating Station is a continuous release plant. All purges and vents are discharged through the Standby Gas Treatment System and released through the reactor building stack which is sampled and continuously monitored for radioactive gaseous waste.Columbia Generating Station 12 2010 Radioactive Effluent Report Table 3-6 Lower Limits of Detection Gaseous Effluents Report Period: January -- December 2010 Fission Gases Required LLDt Achieved Analysis Nuclide (pCi/cc) LLD (pCi/cc)krypton-87 1.OOE-04 1.05E-08 krypton-88 1.OOE-04 1.29E-08 xenon-133 1.OOE-04 1.OOE-08 xenon-133m 1.00E-04 3.25E-08 xenon-135 1.OOE-04 3.77E-09 xenon-138 1.OOE-04 4.48E-08 Iodines iodine-131 OOE-12 6.04E-14 iodine-133 1.OOE-10 1.28E-12 Particulates strontium-89 1.OOE- 11 1.16E-14 strontium-90 1.OOE-11 5.12E-15 cesium-134 1.OOE-11 5.11E-14 cesium-137 1.OOE-11 4.70E-14 molybdenum-99 1.OOE-1 1 9.12E-13 cerium-141 1.OOE- 11 4.88E-14 cerium-144 1.OOE-11 1.97E-13 cobalt-5 8 1.OOE-1 1 4.44E-14 cobalt-60 1.OOE-11 7.86E-14 iron-59 1.OOE-11 1.07E-13 manganese-54 1.OOE-1 1 4.5 6E-14 zinc-65 1.OOE-11 1.01E-13 Gross Alpha 1.OOE-11 9.01E-16 Tritium hydrogen-3 1.00E-06 5.85E-11 t From ODCM Table 6.2.2.1-1 Columbia Generating Station 13 2010 Radioactive Effluent Report Columbia Generating Station 13 2010 Radioactive Effluent Report 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 1.21-1974.
Solid Radwaste Information required by the Offsite Dose Calculation Manual January -- December 2010 Class A 1. Container Volumes 10 GAL DRUM 2.0 ft3 30 GAL DRUM 4.0 ft3 55 GAL DRUM 7.5 ft3 B-25 Steel Box 96 ft3 PL8-120 Polyethylene HIC 120.3 ft3 EL-142 Polyethylene HIC 132.4 ft3 ES-190 Steel Liner 138 ft3 Control Rod Guide Tube 19.2 ft3 2. Total Curies 1.04E+03 Ci 3. Princi al Radionuclides N di-Co-60 4.12E+02 3.97E+01 Zn-65 3.56E+02 3.44E+01 Fe-55 1.78E+02 1.72E+01 Mn-54 4.04E+01 3.90E +00 Co-58 3.23E+01 3.11E+00 Ni-63 1.30E+01 1.25E+00 C-14 1.70E+00 1.64E-01 Ag-110m 1.43E1+00 1.38E-01 Cs-137 6.85E-01 6.61E-02 Cr-51 6.29E-01 6.07E-02 Sr-89 3.03E-01 2.92E-02 H-3 2.30E-01 2.22E-02 Fe-59 1.90E-01 1.83E-02 Columbia Generating Station 14 2010 Radioactive Effluent Report Columbia Generating Station 14 2010 Radioactive Effluent Report Nb-95 1.75E-01 1.68E-02 Ni-59 1.36E-01 1.32E-02 La-140 1.23E-01 1.19E-02 Ba-140 1.11E-01 1.07E-02 1-131 3.76E-02 3.63E-03 Sr-90 2.34E-02 2.26E-03 Pu-231 1.65E-02 1.59E-03 Zr-95 5.11E-03 4.93E-04 Sb-125 4.14E-03 4.OOE-04 Ce- 141 2.19E-03 2.11E-04 4. Source Resins 1.04E+03 Ci DAW 4.79E-01 Ci Irradiated Components 7.50E-01 Ci Other (Sealed Source & Mixed Waste) 1.67E-04 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 2010 Class C 1. Container Volumes TN-RAM Liner PL8-120 Polyethylene HIC L8-120 Steel Liner 2. Total Curies 3.95E+04 Ci 57.8 ft3 120.3 ft3 125.2 ft3 Columbia Generating Station 15 2010 Radioactive Effluent Report Columbia Generating Station 15 2010 Radioactive Effluent Report 3 Pincial Radionuclid e Co-60 2.39E + 04 6.06E + 01 Fe-55 1.26E+04 3.18E+01 Ni-63 2.80E+03 7.09E+00 Mn-54 1.29E+02 3.27E-01 Ta-182 2.08E+01 5.27E-02 Ni-59 1.57E+01 3.97E-02 Cr-51 1.50E+01 3.81E-02 Zn-65 1.32E+01 3.34E-02 Co-58 7.47E+00 1.89E-02 H-3 4.99E+00 1.26E-02 C-14 4.OOE+00 1.01E-02 Cs-137 9.92E-01 2.51E-03 Zr-95 4.70E-01 1. 19E-03 Sb-125 4.69E-01 1. 19E-03 Nb-95 2.60E-01 6.95E-04 Ag-110m 1.85E-01 4.69E-04 Sr-89 1.81E-01 4.58E-04 Sb-124 1.57E-01 3.98E-04 Nb-94 8.11E-02 2.05E-04 Tc-99 2.251E-02 5.7 1E-05 4. Source Resins DAW 0.OOE+00 Ci 0.00E+00 Ci 3.95E+04 Ci 0.OOE+00 Ci Irradiated Components Other (Sealed Source & Mixed Waste)5. Type of Container All containers shipped as Type B (including casks).6. Solidification Agent None Columbia Generating Station 16 2010 Radioactive Effluent Report.Columbia Generating Station 16 2010 Radioactive Effluent Report Solid Radwaste Information Recommended by NRC Regulatory Guide 1.21 January -- December 2010 Solid waste shipped offsite for burial or disposal (not irradiated fuel).1. Type of Waste Annual Est. Total Waste Stream Unit Cumulative Error %a. Spent resins, filter sludge, m 3  2.29E+02 evaporator bottoms, etc. Ci 1.04E+03 2.5E+01%b. Dry Active Waste m 3  8.16E+01 Ci 4.79E-01 2.5E+01%c. Irradiated Components m 3  1.73E+01 Ci 3.95E+04 2.5E+01%d. Other Waste (Sealed Source & m 3  6.12E+00 mixed waste) Ci 1.67E-04 2.5E+01%2. Estimate of major nuclide composition (by type of waste)a.Dewaterea Spent Resins -- All Classes Nuclie Cuies Prcen Co-60 4.11E+02 3.97E + 01 Zn-65 3.56E+02 3.43E+01 Fe-55 1.78E+02 1.72E+01 Mn-54 4.04E+01 3.90E+00 Co-58 3.22E+01 3.10E+00 Ni-63 1.28E+01 1.23E+00 C-14 1.70E+00 1.64E-01 Ag-110m 1.43E+00 1.38E-01 Cs-137 6.59E-01 6.55E-02 Cr-51 5.34E-01 5.15E-01 Sr-89 3.02E-01 2.92E-02 H-3 2.29E-01 2.21E-02 Fe-59 1.90E-01 1.83E-02 Nb-95 1.70E-01 1.64E-02 Ni-59 1.35E-01 1.30E-02 La-140 1.23E-01 1.18E-02 Ba-140 1.11E-01 1.07E-02 1-131 3.76E-02 3.62E-03 Columbia Generating Station 17 2010 Radioactive Effluent Report Columbia Generating Station 17 2010 Radioactive Effluent Report
: b. Dry Active Waste (DAW) -- All Classes Ncide CuisPecn Co-60 1.53E-01 3.19E+01 Zn-65 1.24E-01 2.60E+01 Cr-51 9.54E-02 1.99E+01 Co-58 6.02E-02 1.26E+01 Mn-54 1.35E-02 2.82E+00 Fe-55 7.52E-03 1.57E+00 Cs-137 6.13E-03 1.28E+00 Nb-95 4.59E-03 9.57E-01 Zr-95 3.61E-03 7.54E-01 Sb-125 3.36E-03 7.01E-01 Ni-63 2.80E-03 5.83E-01 Ag-110m 1.79E-03 3.73E-01 Sb-124 1.17E-03 2.45E-01 Sr-89 1.11E-03 2.31E-01 H-3 4.62E-04 9.55E-02 C-14 7.31E-05 1.53E-02 Sr-90 2.94E-05 6.13E-03 Pu-239 2.94E-05 3.21E-04.Irradiated Cornonents Co-60 2.39E+04 6.06E +0 1 Fe-55 1.26E+04 3.18E+01 Ni-63 2.80E + 03 7.09E + 00 Mn-54 1.29E+02 3.27E-01 Ta-182 2.08E+01 5.27E-02 Ni-59 1.57E+01 3.97E-02 Cr-51 1.50E+01 3.81E-02 Zn-65 1.32E+01 3.34E-02 Co-58 7.47E + 00 1.89E-02 H-3 4.99E+00 1.26E-02 C.Columbia Generating Station 18 2010 Radioactive Effluent Report Columbia Generating Station 18 2010 Radioactive Effluent Report C-14 4.OOE+00 1.01E-02 Cs-137 9.92E-01 2.51E-03 Zr-95 4.70E-01 1. 19E-03 Sb-125 4.69E-01 1.19E-03 Nb-95 2.60E-01 6.59E-04 Ag-110m 1.85E-01 4.69E-04 Sr-89 1.81E-01 4.58E-04 Sb-124 1.57E-01 3.98E-04 Other Waste (Sealed Source & Mixed Waste)Co-60 9.34E-05 5.59E+01 Fe-55 6.69E-05 4.01E+01 Mn-54 5.52E-06 3.30E+00 Sb-125 4.71E-07 2.82E-01 Cs-137 4.12E-07 2.47E-01 Ag-110m 1.52E-07 9.08E-02 Co-58 1.41E-07 8.44E-02 d.3. Solid Waste Disposition Number of Shipments 32 Mode of Transportation Tractor -Trailer via Public Highway Tractor -Trailer via Public Highway Destination US Ecology, Inc.P.O. Box 638 Hanford Reservation Richland, WA. 99352 Perma-Fix Northwest 2025 Battelle Boulevard Richland, WA 99352 3*(* After processing, portions of this shipment may be forwarded for disposal.)
Irradiated Fuel Shipments (Disposition)
Number of Shipments Mode of Transportation None N/A Destination N/A Columbia Generating Station 19 2010 Radioactive Effluent Report Columbia Generating Station 19 2010 Radioactive Effluent Report 5.0 Meteorological Data The meteorological data contained in Tables 5-1 through 5-10 was obtained from the meteorological tower located 2500 feet (762 m) west of Columbia Generating Station. Data was recovered from instruments at the 33-foot (10 meter) and 245- foot (75 meter) levels.The meteorological data is a composite file generated from the automated data recovery systems for the calendar year 2010. Data is archived on the Energy Northwest Local Area Network.Meteorological data recovery for 2010 was 95.7% from the 33-foot level and 96.9% from the 245-foot level. Redundant wind and temperature sensors are installed at both levels of the meteorological tower. Data from the two systems is mixed to permit maximum data recovery for defined date ranges.The data in Tables 5-1 through 5-8 lists the joint frequency distributions at the 33- foot and 245-foot levels by quarter for 2010. 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. Table 5-9 and 5-10 list the annual joint frequency distributions for those levels for 2010.Wind speed is measured in miles per hour in the following tables and speeds below 1.0 MPH were recorded as calms.Atmospheric factors which affect dispersion and deposition of gaseous effluents as measured or documented at the Hanford Meteorological Station during 2010 were snow (15.9 inches total which fell in November and December), total precipitation (10.19 inches), dust or blowing dust (1 day), fog (49 days), thunderstorms (7 days), and atmospheric smoke (1 day).Rainfall as recorded at the Columbia Generating Station meteorological tower was 6.65 inches.Columbia Generating Station 20 2010 Radioactive Effluent Report Joint Frequency Distribution Tables for 2010 Table 5-1 1st Quarter Average, 33 Ft Above Ground Level AGL Hours at each wind speed and direction during time period Elevation:
33 Start Date: 111/2010 Total number of Periods: 2159 Period: 1st Quarter Stop Date: 3/31/2010 Periods of No Data Recovery:
9 System Percent Data Recovery:
99.6Y 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13A 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 rTOTALS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2.2 4.5 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 6.7 8.9 3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 5 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 4 2 0 0 0 0 0 0 0 0 0 1 0 1 1 4 13 Stability Class: C Wind Speed Min Max N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTALI 1.0 2.2 3 1 1 0 0 0 0 0 0 0 0 0 0 0 2 1 8 2.2 4.5 8 2 1 0 0 0 0 0 0 0 0 0 0 0 0 14 25 4.5 6.7 7 4 0 0 0 0 0 0 0 0 0 2 0 0 2 7 22 6.7 8.9 10 1 0 0 0 0 0 0 1 0 0 1 0 0 0 7 20 8.9 11.2 4 3 0 0 0 0 0 0 1 1 2 0 3 2 0 1 17 11.2 13.4 2 0 0 0 0 0 0 0 0 0 2 0 1 3 1 1 10 13.4 17.9 3 0 0 0 0 0 0 0 0 1 4 1 0 2 0 1 12 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 37 11 2 0 0 0 0 0 2 2 8 5 4 7 5 32 115 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 5 9 4 1 4 2 1 5 6 10 1 5 4 3 5 10 75 2.2 4.5 25 17 11 2 0 2 12 15 16 5 7 5 6 1 13 29 166 4.5 6.7 13 18 8 1 0 1 1 19 8 5 2 2 5 4 10 34 131 6.7 8.9 4 4 0 0 0 0 5 11 9 8 4 1 1 3 30 23 103 8.9 11.2 0 5 0 0 0 0 1 3 4 5 2 1 1 3 19 8 52 11.2 13.4 2 1 2 0 0 0 1 2 1 4 3 0 3 3 3 0 25 13.4 17.9 1 0 0 0 0 0 1 0 1 4 6 5 1 0 2 1 22 17.9 22.4 0 0 0 0 0 0 0 2 2 6 7 1 2 0 1 0 21 22.4 29.1 0 0 0 0 0 0 0 0 0 2 1 2 0 0 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 50 54 25 4 4 5 22 57 47 49 33 22 23 17 83 105 600 Columbia Generating Station 21 2010 Radioactive Effluent Report Columbia Generating Station 21 2010 Radioactive Effluent Report 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 3 4 2 1 3 0 5 4 7 13 4 4 6 4 6 13 79 2.2 4.5 16 13 6 3 1 4 6 6 20 17 2 7 3 8 26 24 162 4.5 6.7 14 7 9 5 0 2 2 13 9 1 5 3 4 7 26 25 132 6.7 8.9 2 1 1 0 0 0 4 32 13 5 4 2 0 7 31 10 112 8.9 11.2 0 0 0 0 0 0 3 8 3 7 3 0 2 8 10 5 49 11.2 13.4 0 0 0 0 1 0 3 4 6 7 0 0 0 6 4 2 33 13.4 17.9 0 0 0 0 0 0 0 3 3 9 3 0 0 1 3 0 22 17.9 22.4 0 0 0 0 0 0 0 0 0 2 1 0 1 0 0 0 4 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0=TOTALS 35 25 18 9 5 6 23 70 61 62 22 16 16 41 106 79 594 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 9 7 2 4 1 3 3 8 5 5 8 4 7 5 7 8 86 2.2 4.5 23 15 12 4 1 1 3 12 21 9 5 4 2 9 22 24 167 4.5 6.7 8 2 5 1 0 0 2 12 6 5 4 0 1 6 15 33 100 6.7 8.9 2 0 0 0 0 0 1 16 7 2 2 1 0 2 24 4 61 8.9 11.2 0 0 0 0 0 0 4 12 3 0 0 0 0 4 4 0 27 11.2 13.4 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 3 13.4 17.9 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 3 17.9 22.4 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 3 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 42 24 19 9 2 4 14 62 45 23 19 9 10 26 73 69 450 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 3 3 3 0 1 1 1 1 1 3 0 2 2 3 10 10 44 2.2 4.5 24 11 1 0 0 0 2 7 7 5 4 1 1 5 11 30 109 4.5 6.7 4 1 5 1 0 0 0 11 2 1 0 0 0 2 17 13 57 6.7 8.9 0 0 0 0 0 0 0 4 7 0 0 0 1 2 6 4 24 8.9 11.2 0 0 0 0 0 0 0 8 2 0 0 0 0 1 3 0 14 11.2 13.4 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 13.4 17.9 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 IrOTALS 31 15 9 1 1 1 3 31 21 9 4 3 4 13 47 57 250 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 23 25 12 6 9 6 10 18 19 31 13 15 19 15 30 42 293 2.2 4.5 97 59 31 9 2 7 23 40 64 36 18 17 12 23 72 122 632 4.5 6.7 46 32 27 8 0 3 5 55 25 12 11 7 10 19 70 114 444 6.7 8.9 21 6 1 0 0 0 10 63 37 15 10 5 2 14 92 50 326 8.9 11.2 4 8 0 0 0 0 8 31 13 13 7 1 6 18 36 14 159 11.2 13.4 4 1 2 0 1 0 5 6 9 11 5 0 4 12 9 3 72 13.4 17.9 4 0 0 0 0 0 1 5 6 14 13 6 1 4 5 2 61 17.9 22.4 0 0 0 0 0 0 0 2 3 10 8 3 3 0 1 0 30 22.4 29.1 0 0 0 0 0 0 0 0 0 3 1 2 0 0 0 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 199 131 73 23 12 16 62 220 176 145 86 56 57 105 315 347 2023 Periods of Calm while in Stability Glass: A B C D E F G Total 0 0 1 30 46 35 13 127 Columbia Generating Station 22 2010 Radioactive Effluent Report Columbia Generating Station 22 2010 Radioactive Effluent Report Table 5-2 1st Quarter Average, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:
245 Start Date: 1/1/2010 Total number of Periods: 2159 Period: 1st Quarter Stop Date: 3/31/2010 Periods of No Data Recovery:
9 System Percent Data Recovery:
99.6%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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2.2 4.5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 4.5 6.7 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 6.7 8.9 1 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 3 8.9 11.2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 5 0 1 0 0 0 0 0 0 0 1 0 0 1 2 3 13 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 1 0 1 0 0 0 0 0 0 0 0 0 0 0 2 1 5 2.2 4.5 9 3 0 0 0 0 0 0 0 0 0 0 0 0 0 9 21 4.5 6.7 3 2 0 0 0 0 0 0 0 0 0 0 0 0 1 10 16 6.7 8.9 10 2 0 0 0 0 0 0 0 0 0 0 2 1 0 7 22 8.9 11.2 6 2 0 0 0 0 0 0 0 1 0 1 0 1 0 3 14 11.2 13.4 4 1 0 0 0 0 0 0 1 1 2 0 4 0 0 1 14 13.4 17.9 4 0 0 0 0 0 0 0 0 0 2 0 1 4 0 2 13 17.9 22.4 0 0 0 0 0 0 0 0 0 1 5 0 0 2 0 0 8 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 37 10 1 0 0 0 0 0 1 3 9 2 7 8 3 33 114 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 3 6 1 2 5 1 3 2 7 5 1 3 0 4 3 5 51 2.2 4.5 16 12 9 4 1 1 5 12 13 6 9 6 6 3 12 19 134 4.5 6.7 10 10 8 0 0 2 10 16 9 4 3 2 1 3 10 29 117 6.7 8.9 9 11 4 1 0 0 1 9 5 6 2 0 3 2 15 23 91 8.9 11.2 1 4 1 0 0 0 2 6 6 7 2 2 2 3 18 14 68 11.2 13.4 0 4 0 0 0 0 0 4 4 2 2 0 1 6 17 5 45 13.4 17.9 4 1 2 0 0 0 1 2 3 8 6 2 1 10 11 2 53 17.9 22.4 0 0 0 0 0 0 2 0 0 1 4 4 1 1 2 0 15 22.4 29.1 0 0 0 0 0 0 0 2 2 8 10 2 1 1 0 0 26 29.1 40.3 0 0 0 0 0 0 0 0 0 3 2 2 2 0 0 0 9 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 43 48 25 7 6 4 24 53 49 50 41 23 18 33 88 97 609 Columbia Generating Station 23 2010 Radioactive Effluent Report Columbia Generating Station 23 2010 Radioactive Effluent Report Table 5-2 1st Quarter Average, 245 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 5 3 4 3 0 2 2 6 2 6 3 2 1 2 3 1 45 2.2 4.5 6 4 6 3 4 4 6 8 11 4 3 2 5 2 7 10 85 4.5 6.7 6 4 8 4 4 2 8 7 7 4 2 2 3 4 13 19 97 6.7 8.9 3 4 2 2 0 1 1 8 4 2 3 0 1 3 18 16 68 8.9 11.2 4 5 3 2 0 0 3 7 12 3 2 2 3 7 21 14 88 11.2 13.4 1 0 2 0 0 0 2 11 14 3 5 2 1 7 30 10 88 13.4 17.9 2 0 0 0 0 1 3 10 6 11 6 0 2 14 18 8 81 17.9 22.4 0 0 0 0 1 0 2 3 4 6 8 0 0 12 7 4 47 22.4 29.1 0 0 0 0 0 0 0 3 0 5 3 1 0 5 0 0 17 29.1 40.3 0 0 0 0 0 0 0 0 0 4 1 0 0 0 0 0 5 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 27 20 25 14 9 10 27 63 60 48 36 11 16 56 117 82 621 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 3 4 1 1 2 1 1 1 0 0 1 3 0 2 0 21 2.2 4.5 6 3 8 10 6 4 4 9 10 6 7 4 0 4 3 10 94 4.5 6.7 8 8 5 4 0 0 3 10 8 7 3 1 3 6 6 14 86 6.7 8.9 5 3 10 5 0 0 2 13 4 3 5 3 1 3 14 14 85 8.9 11.2 6 1 3 0 0 0 3 3 5 3 2 1 1 2 14 13 57 11.2 13.4 0 3 1 0 0 0 5 3 10 3 1 0 1 3 10 6 46 13.4 17.9 1 0 0 0 0 0 0 11 3 4 0 0 1 14 17 11 62 17.9 22-4 0 0 0 0 0 0 0 2 2 0 0 0 0 9 3 1 17 22.4 29.1 0 0 0 0 0 0 0 1 0 1 0 0 0 2 0 0 4 29.1 40.3 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 27 21 31 20 7 6 18 53 43 29 19 10 10 43 69 69 475 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 1 1 0 2 1 2 0 0 3 2 5 0 3 1 1 2 24 2.2 4.5 6 6 4 3 0 4 4 3 6 1 0 2 2 2 4 6 53 4.5 6.7 15 9 3 1 0 0 1 2 2 1 1 0 1 1 1 6 44 6.7 8.9 6 4 3 0 0 0 0 8 4 4 1 0 0 0 4 14 48 8.9 11.2 4 0 2 0 0 0 1 2 3 1 0 0 0 0 11 10 34 11.2 13.4 2 0 0 0 0 0 1 5 3 0 0 0 0 1 7 5 24 13.4 17.9 0 0 0 0 0 0 2 4 1 3 0 0 0 3 10 6 29 17.9 22.4 0 0 0 0 0 0 0 2 0 1 0 0 0 0 0 2 5 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 34 20 12 6 1 6 9 26 22 13 7 2 6 8 38 51 261 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 11 13 2.2 4.5 44 28 4.5 6.7 44 33 6.7 8.9 34 24 8.9 11.2 22 12 11.2 13.4 7 8 13.4 17.9 11 1 17.9 22.4 0 0 22.4 29.1 0 0 29.1 40.3 0 0 40.3 90.0 0 0 11 27 24 19 9 3 2 0 0 0 o 8 20 9 8 2 0 0 0 0 0 a 7 11 4 0 0 0 0 1 0 0 0 7 13 4 1 0 0 1 0 0 0 A 6 19 22 4 9 8 6 4 0 0 0 9 13 13 9 6 7 7 11 9 147 32 40 17 19 14 13 11 26 55 389 35 26 16 9 5 8 14 31 79 363 38 17 15 11 3 7 9 53 74 317 18 26 15 6 6 6 13 64 56 264 23 32 9 10 2 7 17 64 27 217 27 13 26 14 2 5 45 56 29 238 7 6 9 17 4 1 25 12 7 93 6 2 14 14 4 1 8 0 0 49 0 0 9 4 2 2 0 0 0 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 173 119 95 47 23 26 78 195 175 143 113 48 57 149 317 336 2094 Periods of Calm while in Stability Class: I A B C D E F G TotalI 0 0 2 21 19 10 4 561 Columbia Generating Station 24 2010 Radioactive Effluent Report Columbia Generating Station 24 2010 Radioactive Effluent Report Table 5-3 2nd Quarter Average, 33 Ft AGL Hours at each wind speed and direction during time period Elevation:
33 Start Date: 4/1/2010 Total number of Periods: 2184 Period: 2nd Quarter Stop Date: 6/30=2010 Periods of No Data Recovery:
341 System Percent Data Recovery:
8"44%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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11o 13.4 0 0 0 0 0 0 0 0 2 0 0 0 0 0 1 0 3 13.4 17.9 0 0 0 0 0 0 0 0 2 0 3 0 0 0 0 1 6 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 4 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 0 5 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 0 0 0 0 0 0 0 0 4 0 3 3 2 4 1 2 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 3 6.7 8.9 4 1 0 0 0 0 0 0 2 0 1 0 0 0 0 3 11 8.9 11.2 1 1 1 0 0 0 0 0 2 1 0 0 0 0 0 1 7 11.2 13.4 0 0 0 0 0 0 0 0 6 2 0 0 0 0 0 0 8 13.4 17.9 2 2 0 0 0 0 1 0 0 5 4 0 0 1 0 2 17 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 3 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 8 5 1 0 0 0 1 0 11 10 5 3 0 1 0 6 51 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 1 2 1 0 0 2 0 0 0 0 0 0 0 0 0 2 8 2.2 4.5 1 0 2 0 0 0 1 3 2 0 1 0 0 1 3 3 17 4.5 6.7 6 5 3 1 1 0 2 7 5 0 3 3 3 0 3 6 48 6.7 8.9 3 6 0 0 1 2 3 8 5 4 1 2 3 1 3 4 46 8.9 11.2 1 2 3 1 1 0 0 3 14 8 2 3 1 2 1 1 43 11.2 13.4 1 0 1 0 0 0 0 1 13 8 3 3 2 1 1 1 35 13.4 17.9 0 1 0 0 0 0. 1 0 6 5 5 1 2 1 2 0 24 17.9 22.4 0 0 0 0 0 0 0 0 0 1 4 2 0 1 1 0 9 22.4 29.1 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 0 4 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 13 16 10 2 3 4 7 22 45 27 20 14 13 10 14 17 237 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 0 3 6 4 3 0 4 5 1 6 3 3 1 0 2 2 43 2.2 4.5 2 8 13 4 2 4 26 14 11 8 5 9 7 6 3 6 128 4.5 6.7 3 10 9 3 2 6 16 25 11 8 11 11 4 4 2 3 128 6.7 8.9 1 4 6 3 2 4 16 14 11 8 5 7 3 7 6 3 100 8.9 11.2 0 1 2 0 3 1 10 9 18 8 3 4 6 15 9 5 94 11.2 13.4 0 2 0 1 0 1 5 7 9 5 4 7 2 7 0 2 52 13.4 17.9 3 3 2 0 0 1 5 6 9 8 5 6 4 14 2 6 74 17.9 22-4 0 0 0 0 0 0 2 0 0 5 4 3 1 18 6 0 39 22.4 29.1 0 0 0 0 0 0 0 0 1 3 0 1 4 13 2 0 24 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 9 31 38 15 12 17 84 80 71 59 40 51 32 84 32 27 682 Columbia Generating Station 25 2010 Radioactive Effluent Report Columbia Generating Station 25 2010 Radioactive Effluent Report Table 5-3 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 1 2 0 0 0 0 2 0 0 3 1 1 2 2 2 3 19 2.2 4.5 7 5 1 1 0 3 7 8 9 7 5 11 6 7 8 6 91 4.5 6.7 5 4 2 1 0 1 4 10 8 8 6 7 6 7 6 7 82 6.7 8.9 0 1 2 0 0 1 7 13 10 6 5 1 12 10 5 3 76 8.9 11.2 0 1 0 0 0 0 7 1 4 5 7 6 9 15 7 5 67 11.2 13.4 0 2 0 0 0 0 1 2 3 13 2 1 3 11 4 3 45 13.4 17.9 0 0 0 0 0 0 1 1 1 5 5 2 1 22 0 1 39 17.9 224 0 0 0 0 0 0 0 0 3 5 4 5 1 5 0 0 23 22.4 29.1 0 0 0 0 0 0 0 0 1 1 1 1 1 2 0 0 7 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 13 15 5 2 0 5 29 35 39 53 36 35 41 81 32 28 449 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 3 3 3 3 0 0 3 6 3 1 2 1 1 0 2 4 35 2.2 4.5 8 4 2 1 0 2 8 13 13 3 2 0 5 8 8 10 87 4.5 6.7 3 3 1 0 0 0 5 16 15 5 2 1 5 8 7 5 76 6.7 8.9 1 1 0 0 0 0 2 9 9 4 0 1 2 4 3 0 36 8.9 11.2 0 0 0 0 0 0 1 4 0 3 0 0 2 0 1 0 11 11.2 13.4 0 0 0 0 0 0 0 2 1 1 0 0 0 1 0 0 5 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 15 11 6 4 0 2 19 50 41 17 6 3 15 21 21 19 250 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 3 1 2 0 0 0 0 2 3 0 1 1 0 1 1 3 18 2.2 4.5 4 7 3 0 0 0 4 9 3 1 1 0 0 1 2 5 40 4.5 6.7 3 4 2 0 0 0 5 6 1 2 0 0 0 0 2 5 30 6.7 8.9 0 0 0 0 0 0 0 5 3 2 0 0 0 0 1 2 13 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 10 12 7 0 0 0 9 22 10 5 2 1 0 2 6 15 101 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 8 11 12 7 3 2 9 13 7 10 7 6 4 3 7 14 123 2.2 4.5 22 24 21 6 2 9 46 47 38 19 14 20 18 23 24 30 363 4.5 6.7 21 27 17 5 3 7 32 64 41 23 22 22 18 19 20 26 367 6.7 8.9 9 13 8 3 3 7 28 49 40 24 12 11 20 22 18 16 283 8.9 11.2 2 5 6 1 4 1 18 17 38 25 12 13 18 32 18 12 222 11.2 13.4 1 4 1 1 0 1 6 12 34 29 9 11 7 20 6 6 148 13.4 17.9 5 6 2 0 0 1 8 7 18 23 22 9 7 38 4 10 160 17.9 22.4 0 0 0 0 0 0 2 0 3 12 12 10 2 24 7 0 72 22.4 29.1 0 0 0 0 0 0 0 0 2 5 2 4 6 21 2 0 42 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 4 3 1 0 0 9 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 68 90 67 23 15 28 149 209 221 171 112 110 103 203 106 114 1789 Periocs of Calm while in Stability Class: A B C D E F G Total 0 0 0 14 18 12 10 54 Columbia Generating Station 26 2010 Radioactive Effluent Report Table 5-4 2nd Quarter Average, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:
245 Start Date: 4/112010 Total number of Periods: 2184 Period: 2nd Quarter Stop Date: 6/3012010 Periods of No Data Recovery:
214 System Percent Data Recovery:
90.2%Stability Class: A Wind Speed Min Max N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTALI 1.0 2.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 13.4 17.9 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 4 17.9 22.4 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 4 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 4 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 4 0 0 0 5 TOTALS 1 0 0 0 0 0 0 0 2 3 2 1 4 4 1 1 19 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 1 5 0 0 0 0 0 0 1 0 0 0 0 0 0 0 7 8.9 11.2 1 1 1 0 0 0 0 0 1 1 1 0 0 0 0 3 9 11.2 13.4 0 1 1 0 0 0 0 0 1 3 0 0 0 0 0 0 6 13.4 17.9 1 1 0 0 0 0 0 0 3 3 2 0 0 0 1 1 12 17.9 22.4 1 1 0 0 0 0 1 0 0 4 3 2 0 1 0 0 13 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 TOTALS 4 9 2 0 0 0 1 0 6 12 6 5 0 1 1 4 51 1 Stability Class: C Wind Speed Min Max N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTALi 1.0 2.2 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 4 2.2 4.5 1 2 2 0 0 0 2 0 2 0 1 0 0 1 1 1 13 4.5 6.7 5 5 3 2 1 0 0 4 2 1 1 0 0 0 4 4 32 6.7 8.9 3 5 0 0 0 0 1 7 5 1 2 6 2 1 2 4 39 8.9 11.2 1 4 2 1 0 2 2 4 13 4 2 2 2 0 3 2 44 11.2 13.4 0 1 1 0 2 0 0 0 5 11 4 0 2 1 0 1 28 13.4 17.9 1 1 1 0 0 0 0 0 9 19 6 3 6 2 2 2 52 17.9 22.4 0 0 0 0 0 0 1 0 0 5 6 1 2 2 1 0 18 22.4 29.1 0 0 0 0 0 0 0 0 0 1 4 2 0 1 0 0 8 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 0 4 40.3 90.0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 2 TOTALS 12 18 9 3 3 3 6 15 36 43 27 14 16 10 14 15 244 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 1 7 4 3 1 3 1 6 3 2 3 0 1 1 1 38 2.2 4.5 2 5 11 5 3 2 8 18 9 6 7 5 6 7 4 6 104 4.5 6.7 2 3 8 4 0 5 16 23 13 8 8 7 5 2 2 2 108 6.7 8.9 1 9 9 7 2 2 10 13 22 5 7 12 2 4 6 2 113 8.9 11.2 1 2 2 4 2 4 11 5 15 9 10 5 4 5 6 2 87 11.2 13.4 1 0 2 0 2 1 4 3 13 8 5 3 4 10 10 5 71 13.4 17.9 1 1 1 0 2 2 11 12 12 14 10 8 7 11 2 3 97 17.9 22.4 1 3 2 0 0 2 2 2 3 9 4 1 5 10 1 6 51 22.4 29.1 0 0 0 0 0 2 0 0 0 5 3 5 5 15 6 0 41 29.1 40.3 0 0 0 0 0 0 0 0 0 4 5 1 4 19 5 0 38 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 10 24 42 24 14 21 65 77 93 71 61 50 42 84 43 27 748 Columbia Generating Station 27 2010 Radioactive Effluent Report Columbia Generating Station 27 2010 Radioactive Effluent Report Table 5-4 2nd Quarter Average, 245 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 0 0 1 0 1 0 1 0 0 1 1 0 1 0 1 2 9 2.2 4.5 5 2 1 2 1 3 2 1 5 5 2 4 3 8 3 5 52 4.5 6.7 2 2 2 0 0 1 0 7 4 4 4 3 4 4 5 2 44 6.7 8.9 5 4 1 1 0 1 0 7 4 7 3 7 5 10 4 3 62 8.9 11.2 1 0 2 0 0 1 5 2 5 11 2 3 5 5 7 3 52 11.2 13.4 2 0 2 0 1 1 2 1 6 6 6 1 7 11 7 2 55 13.4 17.9 2 1 4 0 0 1 9 3 3 9 9 7 3 16 11 4 82 17.9 22.4 0 0 1 0 0 2 0 0 3 7 9 4 8 29 6 3 72 22.4 29.1 0 0 0 0 0 0 0 0 0 12 5 5 0 28 1 0 51 29.1 40.3 0 0 0 0 0 0 0 0 0 2 3 6 1 6 0 0 18 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 17 9 14 3 3 10 19 21 30 64 44 40 37 117 45 24 497 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 2 1 0 0 0 0 1 0 3 0 3 0 0 1 1 0 12 2.2 4.5 4 6 1 3 0 2 3 8 2 1 5 2 1 3 5 0 46 4.5 6.7 2 6 1 0 0 1 6 2 8 3 7 3 1 3 2 5 50 6.7 8.9 1 5 2 1 0 0 2 2 10 10 0 5 4 1 7 6 56 8.9 11.2 1 2 2 0 0 0 5 5 5 6 2 2 0 5 7 1 43 11.2 13.4 0 0 0 0 0 0 0 3 2 3 0 1 2 3 3 0 17 13.4 17.9 0 0 0 0 0 0 2 1 2 4 2 0 4 12 10 1 38 17.9 22.4 0 0 0 0 0 0 0 0 2 0 1 0 1 6 1 0 11 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 10 20 6 4 0 3 19 21 34 27 20 13 13 35 36 13 274 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 3 0 0 1 0 0 1 2 1 2 2 0 0 0 1 1 14 2.2 4.5 0 0 2 2 0 0 1 2 5 4 1 1 2 1 1 0 22 4.5 6.7 2 1 1 1 0 1 1 2 4 5 1 2 0 0 1 1 23 6.7 8.9 1 3 2 0 0 0 0 3 2 1 1 0 0 1 0 1 15 8.9 11.2 1 1 2 1 0 0 1 1 2 4 1 0 0 0 2 2 18 11.2 13.4 0 0 1 0 0 0 0 0 0 1 1 0 0 0 1 0 4 13.4 17.9 0 0 0 0 0 0 0 1 0 0 0 0 0 1 8 0 10 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 rTOTALS 7 5 8 5 0 1 4 11 14 17 7 3 2 3 14 5 106 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 7 2 8 5 4 2 6 3 10 6 8 3 1 2 5 5 77 2.2 4.5 12 15 17 12 4 7 16 29 23 16 16 12 12 20 14 12 237 4.5 6.7 13 17 15 7 1 8 23 38 31 21 21 15 10 9 14 14 257 6.7 8.9 13 31 14 9 2 3 13 32 44 24 13 30 13 17 19 16 293 8.9 11.2 6 10 11 6 2 7 24 17 41 35 18 12 11 15 25 13 253 11.2 13.4 3 2 7 0 5 2 6 7 28 32 16 5 15 25 21 8 182 13.4 17.9 5 4 6 0 2 3 22 17 30 50 29 18 20 42 35 12 295 17.9 22.4 2 4 3 0 0 4 4 2 8 27 25 8 16 48 9 9 169 22.4 29.1 0 0 0 0 0 2 0 0 0 18 12 12 5 45 7 0 101 29.1 40.3 0 0 0 0 0 0 0 0 0 7 9 9 6 31 5 0 67 40.3 90.0 0 0 0 0 0 0 0 0 0 1 0 2 5 0 0 0 8 TOTALS 61 85 81 39 20 38 114 145 215 237 167 126 114 254 154 89 1939 Perods of Calm while in Stability ass: A B C D E F G Total 0 0 1 12 4 5 9 31 Columbia Generating Station 28 2010 Radioactive Effluent Report Columbia Generating Station 28 2010 Radioactive Effluent Report Table 5-5 3rd Quarter Average, 33 Ft AGL Hours at each wind speed and direction durinc time period Elevation:
33 Start Date: 7/1/2010 Total number of Periods: 2208 Period: 3rd Quarter Stop Date: 9W30/2010 Periods of No Data Recovery:
17 System Percent Data Recovery:
99.20/6 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 6.7 8.9 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 3 5 8.9 11.2 3 1 0 0 0 0 0 2 3 0 0 0 0 0 0 1 10 11.2 13.4 5 4 0 0 0 0 0 0 3 0 0 0 0 0 1 2 15 13.4 17.9 3 0 0 0 0 0 0 0 6 0 0 0 0 0 1 0 10 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 2 2 2 0 7 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 4 2 0 7 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 12 7 0 0 0 0 0 2 12 2 0 0 2 6 7 6 56 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 3 1 0 0 0 0 0 0 0 0 0 1 2 0 0 3 10 4.5 6.7 2 0 0 0 0 0 0 0 1 0 0 0 1 1 0 5 10 6.7 8.9 3 6 0 0 0 0 0 0 0 1 0 0 0 0 1 7 18 8.9 11.2 4 2 1 0 0 0 0 4 8 0 0 0 1 1 0 3 24 11.2 13.4 2 1 0 0 0 0 0 2 4 1 0 0 0 3 3 0 16 13.4 17.9 2 0 0 0 0 0 0 2 3 0 0 2 1 2 0 0 12 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 1 1 0 0 3 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 40.3 90.0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 TOTALS 16 10 1 0 0 0 0 8 16 3 2 3 5 12 4 18 98 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 3 1 1 1 1 0 0 0 0 1 3 1 0 0 1 1 14 2.2 4.5 13 8 11 0 0 1 0 4 7 2 3 2 2 2 5 9 69 4.5 6.7 9 8 5 2 1 2 5 16 19 2 4 2 1 2 3 10 91 6.7 8.9 5 4 1 1 0 0 3 10 9 2 0 0 3 1 2 10 51 8.9 11.2 7 2 1 2 1 0 0 8 12 1 3 2 2 1 0 3 45 11.2 13.4 2 0 0 2 2 2 1 2 5 2 0 1 1 2 0 3 25 13.4 17.9 0 1 0 1 1 0 2 7 5 2 0 1 1 2 2 0 25 17.9 22.4 0 0 0 0 0 0 0 0 0 3 0 0 0 1 1 1 6 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 40.3 90.0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 TOTALS 39 24 19 10 6 5 11 47 57 15 13 9 10 13 15 37 330 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 4 2.2 4.5 4 4.5 6.7 3 6.7 8.9 4 8.9 11.2 1 11.2 13.4 4 13.4 17.9 1 17.9 22.4 0 22.4 29.1 0 29.1 40.3 0 40.3 90.0 0 1 11 8 4 2 0 1 0 0 0 0 11 17 20 11 3 0 0 0 0 0 0 5 10 2 1 8 4 1 8 6 10 21 18 10 4 7 7 11 24 17 14 8 4 2 8 8 13 9 2 7 2 7 11 12 10 2 2 0 3 3 8 7 1 1 0 0. 0 10 6 4 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 4 0 8 4 5 7 2 1 2 2 2 0 1 0 2 0 0 0 0 0 0 0 3 1 0 6 4 2 1 4 2 2 3 5 2 2 3 1 3 2 3 10 9 0 17 6 0 10 2 0 1 2 0 0 0 2 4 4 6 5 2 0 0 0 0 0 57 137 142 84 73 38 46 27 12 3 1 TOTALS 21 27 62 34 27 41 68 88 61 22 26 14 18 55 33 23 620 Columbia Generating Station 29 2010 Radioactive Effluent Report Table 5-5 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 4 1 1 5 2 0 5 1 3 2 1 3 0 6 2 5 41 2.2 4.5 9 3 3 1 0 6 6 9 7 7 4 5 3 5 9 8 85 4.5 6.7 5 1 1 1 0 0 5 9 9 6 3 12 8 8 10 10 88 6.7 8.9 1 2 3 0 0 1 12 11 5 4 2 3 7 16 12 6 85 8.9 11.2 2 0 0 0 0 2 5 11 8 1 0 2 5 14 9 4 63 11.2 13.4 0 0 0 0 0 0 1 4 2 5 0 1 4 14 6 1 38 13.4 17.9 0 0 0 0 0 0 0 0 2 2 1 0 1 22 2 1 31 17.9 22.4 0 0 0 0 0 0 0 0 1 0 0 0 1 2 1 0 5 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 21 7 8 7 2 9 34 45 37 27 11 26 29 87 51 35 436 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 6 6 4 2 1 3 2 4 9 3 0 2 5 1 4 2 54 2.2 4.5 7 8 10 0 0 4 6 20 8 5 1 2 2 9 7 17 106 4.5 6.7 4 7 10 0 0 1 8 22 9 3 3 2 2 5 8 4 88 6.7 8.9 2 2 4 0 0 2 6 21 9 3 0 0 2 6 6 2 65 8.9 11.2 0 1 4 0 0 0 2 9 6 1 0 1 5 3 1 0 33 11.2 13.4 0 0 1 0 0 0 0 1 2 0 0 0 1 2 1 0 8 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 19 24 33 2 1 10 24 77 43 15 4 7 17 26 27 25 354 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 2 6 6 2 0 3 0 3 2 2 1 1 0 1 3 4 36 2.2 4.5 12 27 11 0 1 0 9 8 2 2 0 0 2 1 10 4 89 4.5 6.7 8 2 1 0 0 0 4 17 5 1 2 0 0 0 5 16 61 6.7 8.9 0 1 2 0 0 0 5 19 4 0 0 0 0 2 6 2 41 8.9 11.2 0 0 3 0 0 0 0 3 0 0 0 0 0 0 0 0 6 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 22 36 23 2 1 3 18 50 13 5 3 1 3 4 24 26 234 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 19 15 23 15 14 8 8 16 18 9 9 7 8 9 10 14 202 2.2 4.5 48 58 52 9 7 21 42 59 34 20 16 14 17 21 33 45 496 4.5 6.7 31 27 37 10 8 14 46 81 57 20 17 23 13 20 28 49 481 6.7 8.9 16 20 21 5 2 11 34 74 36 12 4 4 14 28 32 36 349 8.9 11.2 17 8 12 9 3 9 18 49 47 5 5 7 15 21 13 16 254 11.2 13.4 13 5 1 4 2 5 5 17 23 9 2 2 8 24 13 8 141 13.4 17.9 6 2 0 2 1 0 2 19 22 8 2 3 6 36 14 1 124 17.9 22.4 0 0 0 0 0 0 0 1 2 4 2 0 3 23 10 1 46 22.4 29.1 0 0 0 0 0 0 0 0 0 2 1 0 0 18 5 0 26 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3 0 6 40.3 90.0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 3 TOTALS 150 135 146 55 37 68 155 317 239 89 59 60 84 203 161 170 2128 Periods of Calm while in Stability Class: A B C D E F G TotalI 0 0 3 12 13 15 20 63 Columbia Generating Station 30 2010 Radioactive Effluent Report Table 5-6 3rd Quarter Average, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:
245 Start Date: 7/1/2010 Total number of Periods: 2208 Period: 3rd Quarter Stop Date: 9/302010 Periods of No Data Recovery:
17 System Percent Data Recovery:
99.2%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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 6.7 8.9 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 8.9 11.2 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 3 5 11.2 13.4 7 2 0 0 0 0 0 0 3 0 0 0 0 0 0 2 14 13.4 17.9 0 3 2 0 0 0 0 0 6 2 0 0 0 0 1 1 15 17.9 22.4 0 2 0 0 0 0 0 0 1 1 0 0 0 0 2 0 6 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 2 2 1 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 0 4 3 0 8 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.OTALS 9 7 2 1 0 0 0 1 10 4 1 0 2 6 7 6 56 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 2 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 5 4.5 6.7 1 1 0 0 0 0 0 0 0 0 0 1 0 1 0 5 9 6.7 8.9 4 3 1 0 0 0 0 0 0 2 0 0 0 0 0 3 13 8.9 11.2 3 3 0 0 0 0 0 2 4 0 0 0 2 0 1 7 22 11.2 13.4 3 3 1 0 0 0 0 0 4 3 0 0 1 1 0 0 16 13.4 17.9 1 2 1 0 0 0 0 1 6 1 1 1 1 2 5 0 22 17.9 22.4 0 0 0 0 0 0 0 0 1 1 0 1 0 0 1 0 4 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 2 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 0 1 2 0 4 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 TTOOTALS 14 12 3 0 1 0 0 3 16 8 2 4 4 7 9 15 98 Stability Class: C Wind Speed Min Max N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTALI 1.0 2.2 3 1 0 0 0 0 0 1 0 2 1 1 0 0 2 0 11 2.2 4.5 9 8 7 3 0 0 0 1 4 2 3 2 0 2 4 8 53 4.5 6.7 1 4 6 5 0 2 1 5 12 8 1 1 3 2 3 5 59 6.7 8.9 7 9 3 2 1 1 4 14 13 6 0 4 3 2 4 11 84 8.9 11.2 5 5 2 2 1 0 0 3 9 2 0 0 1 0 0 3 33 11.2 13.4 3 2 0 0 1 0 0 0 15 4 3 1 2 1 0 4 36 13.4 17.9 0 1 1 2 5 1 3 4 9 7 0 2 1 2 0 0 38 17.9 22.4 0 0 0 0 0 0 0 0 1 1 1 1 1 2 2 0 9 22.4 29.1 0 0 0 0 0 0 0 0 0 2 0 0 0 0 2 1 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 LTOTALS 28 30 19 14 8 4 8 28 63 34 9 12 11 12 19 32 331 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 0 2 4 5 5 7 4 2 3 2 1 2 2 1 1 2 43 2.2 4.5 1 6 14 10 5 6 16 19 7 7 7 4 4 2 3 1 112 4.5 6.7 4 4 14 15 7 9 17 17 12 7 7 5 5 4 1 6 134 6.7 8.9 4 4 8 8 6 6 8 13 15 5 3 6 0 1 2 2 91 8.9 11.2 3 2 1 9 2 3 10 4 6 4 1 2 1 5 2 1 56 11.2 13.4 4 2 1 4 2 5 5 3 11 2 0 2 0 3 2 4 50 13.4 17.9 3 1 1 0 1 2 5 5 17 4 2 1 2 2 5 3 54 17.9 22.4 0 0 1 0 0 0 0 2 5 6 0 0 1 6 7 0 28 22.4 29.1 0 0 0 0 0 0 0 1 1 3 3 1 0 15 12 0 36 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 15 6 0 21 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TUTALS 19 21 44 51 28 38 65 66 77 40 24 23 15 54 41 19 625 Columbia Generating Station 31 2010 Radioactive Effluent Report Columbia Generating Station 31 2010 Radioactive Effluent Report Table 5-6 3rd Quarter Average, 245 Ft AGL (Continued)
Stabll itv 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 3 2 1 2 1 0 0 2 0 0 1 1 0 1 2 1 17 2.2 4.5 2 1 3 0 1 4 5 1 1 1 5 6 2 3 1 1 37 4.5 6.7 4 1 2 0 0 2 4 2 2 2 1 3 3 5 7 2 40 6.7 8.9 4 3 0 1 0 2 2 6 7 4 2 2 5 10 3 11 62 8.9 11.2 3 1 2 2 0 1 4 1 10 8 1 3 10 9 7 3 65 11.2 13.4 2 2 0 1 0 0 2 2 9 3 1 3 7 6 5 2 45 13.4 17.9 3 3 1 0 0 0 0 10 8 11 1 2 5 27 17 6 94 17.9 22.4 0 0 0 0 0 0 0 0 1 6 2 1 3 26 13 1 53 22.4 29.1 0 0 0 0 0 0 0 0 0 3 1 0 1 26 0 0 31 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 21 13 9 6 2 9 17 24 38 38 15 21 36 114 55 27 445 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 0 1 2 1 2 0 2 1 .3 1 1 1 2 1 4 23 2.2 4.5 4 3 4 3 3 2 1 1 9 5 6 3 1 2 6 8 61 4.5 6.7 1 1 1 0 3 1 6 8 8 2 1 1 2 6 2 5 48 6.7 8.9 3 2 3 1 0 0 6 12 8 4 3 3 1 2 4 7 59 8.9 11.2 1 2 1 1 0 1 1 12 4 7 4 2 1 5 6 2 50 11.2 13.4 0 2 1 1 0 1 2 6 5 5 2 1 7 5 12 2 52 13.4 17.9 1 0 1 2 0 0 2 3 5 7 1 0 2 4 8 3 39 17.9 22.4 0 0 3 5 0 0 0 0 2 3 0 0 0 8 3 2 26 22.4 29.1 0 0 2 0 0 0 0 0 0 0 0 0 0 5 0 0 7 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 11 10 17 15 7 7 18 44 42 36 18 11 15 39 42 33 365 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 2 2 1 1 3 0 3 1 2 1 0 1 0 2 0 2 21 2.2 4.5 5 3 4 1 0 2 3 5 5 6 2 3 2 0 1 6 48 4.5 6.7 6 2 0 1 1 3 3 9 11 4 2 2 1 0 3 3 51 6.7 8.9 2 0 0 2 0 0 5 10 8 5 3 0 0 0 2 10 47 8.9 11.2 3 1 1 0 0 0 1 4 2 7 0 0 0 0 3 4 26 11.2 13.4 1 0 0 0 0 0 0 2 1 2 1 0 0 0 4 6 17 13.4 17.9 1 0 0 0 0 0 0 1 1 3 1 0 1 4 11 5 28 17.9 22.4 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 4 22.4 29.1 0 0 2 0 0 0 0 0 0 0 0 0 0 3 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90:0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 20 8 9 6 4 5 15 32 30 28 9 6 4 10 25 36 247 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 4.5 6.7 8.9 11.2 13.4 17.9 22.4 29.1 40.3 2.2 9 7 4.5 23 21 6.7 17 13 8.9 25 21 11.2 19 14 13.4 20 13 17.9 9 10 22.4 0 2 29.1 0 0 40.3 0 0 90.0 0 0 7 10 32 17 23 22 15 14 7 14 3 6 7 4 5 6 4 0 0 0 0 0 10 10 11 7 3 3 6 0 0 0 0 9 14 17 9 5 6 3 0 0 0 0 7 8 6 8 25 27 27 21 31 41 45 23 25 55 51 26 16 27 35 28 9 13 48 19 10 24 52 35 0 2 11 18 0 1 1 10 0 0 0 0 0 0 0 0 4 23 12 11 6 7 6 3 4 2 0 6 19 13 15 7 7 6 3 1 0 0 3 6 6 9 115 9 9 15 24 316 14 18 16 26 342 9 15 15 44 357 15 19 19 23 257 17 16 23 20 230 12 41 47 18 290 5 43 29 3 130 3 52 15 1 92 0 21 13 0 36 0 2 0 0 2 TOTALS 122 101 103 93 50 63 123 198 276 188 78 77 87 242 198 168 2167 Periods of Calm while in Stability Class:lA B C D E F G Total 0 0 2 7 4 4 7 24 Columbia Generating Station 32 2010 Radioactive Effluent Report Table 5-7 4th Quarter Average, 33 Ft AGL Hours at each wind speed and direction during time period Elevation:
33 Start Date: 1011/2010 Total number of Periods: 2208 Period: 4th Quarter Stop Date: 12/3112010 Periods of No Data Recovery:
8 System Percent Data Recovery:
99.6%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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2.2 4.5 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 1 4 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 0 0 0 0 0 0 1 0 0 0 0 0 0 1 2.2 4.5 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 0 1 0 0 0 0 1 0 0 2 0 0 0 0 0 2 6 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 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 2.2 4.5 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 6 8 4.5 6.7 3 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2 6 6.7 8.9 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 3 6 8.9 11.2 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 2 11.2 13.4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 13.4 17.9 0 0 0 0 0 0 0 0 0 4 1 0 0 0 0 5 10 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 5 2 0 0 0 0 1 4 0 5 1 1 1 0 0 18 38 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 3 1 4 3 0 3 4 6 5 6 3 2 4 5 13 8 70 2.2 4.5 11 9 10 3 3 0 5 10 12 7 2 6 5 20 22 19 144 4.5 6.7 11 7 14 2 1 1 6 6 8 4 3 2 4 8 21 10 108 6.7 8.9 3 5 8 0 0 1 8 10 9 4 4 0 4 7 20 7 90 8.9 11.2 5 5 1 0 0 0 3 10 12 2 2 5 0 5 18 26 94 11.2 13.4 7 0 0 0 0 0 2 2 6 5 0 0 1 14 6 5 48 13.4 17.9 0 0 0 0 0 0 1 3 12 24 3 1 0 3 6 13 66 17.9 22.4 0 0 0 0 0 0 1 1 7 6 0 0 4 0 6 2 27 22.4 29.1 0 0 0 0 0 0 0 0 1 10 2 0 0 0 0 0 13 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 40 27 37 8 4 5 30 48 72 68 19 16 22 62 112 90 660.Columbia Generating Station 33 2010 Radioactive Effluent Report Table 5-7 4th Quarter Average, 33 Ft AGL (Continued)
Stability Class: E Wind Speed Min Max N NNE NP ENF F ESE S:F SF A SSW SW WSW W WNW NW NNW TOTAL 1.0 2.2 4 5 4 1 2 3 6 5 6 6 8 4 9 11 8 6 88 2.2 4.5 16 7 8 0 1 1 9 10 15 10 7 7 10 16 34 19 170 4.5 6.7 6 5 4 2 0 2 10 22 18 7 5 2 6 17 34 9 149 6.7 8.9 2 2 1 0 0 3 21 24 13 8 1 1 2 5 33 7 123 8.9 11.2 0 1 1 0 0 1 8 21 14 14 2 2 2 5 7 3 81 11.2 13.4 0 0 0 0 0 0 6 17 13 13 1 0 3 3 5 3 64 13.4 17.9 0 0 0 0 0 0 1 5 10 9 2 0 6 7 0 0 40 17.9 22.4 0 0 0 0 0 0 1 2 4 14 1 0 1 1 0 0 24 22.4 29.1 0 0 0 0 0 0 0 0 1 4 0 0 1 0 0 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 28 20 18 3 3 10 62 106 94 85 28 17 41 65 121 47 748 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 7 3 2 3 0 3 5 6 5 3 5 2 6 3 3 61 2.2 4.5 14 7 1 1 0 0 1 13 6 9 3 2 5 6 19 6 93 4.5 6.7 2 2 3 1 1 0 7 15 18 8 1 1 4 6 25 11 105 6.7 8.9 2 1 1 0 0 0 7 22 10 5 1 1 2 2 13 3 70 8.9 11.2 0 1 0 0 0 0 2 12 3 3 0 0 1 0 2 0 24 11.2 13.4 0 0 0 0 0 0 1 7 2 1 0 0 1 0 0 0 12 13.4 17.9 0 0 0 0 0 0 0 1 1 2 0 0 0 1 0 0 5 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 23 18 8 4 4 0 21 75 46 33 8 9 15 21 62 23 370 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 10 12 1 1 1 0 1 2 6 4 4 0 1 4 3 6 56 2.2 4.5 10 14 9 2 0 0 2 12 13 3 2 4 4 5 10 26 116 4.5 6.7 3 1 1 0 0 0 2 11 5 4 0 1 0 1 4 5 38 6.7 8.9 0 0 1 0 0 0 0 5 3 0 0 0 1 1 5 0 16 8.9 11.2 0 0 0 0 0 0 0 4 0 0 0 0 0 0 3 0 7 11.2 13.4 0 0 2 0 0 0 0 1 0 0 0 0 1 0 0 0 4 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 23 27 14 3 1 0 5 35 27 11 6 5 7 11 25 37 237 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 22 26 13 7 6 6 14 18 23 22 18 11 17 26 27 23 279 2.2 4.5 53 39 28 6 4 1 18 46 46 29 14 19 24 47 85 78 537 4.5 6.7 25 15 22 5 2 3 26 54 49 23 9 6 14 32 84 37 406 6.7 8.9 7 8 11 0 0 4 36 64 35 17 6 2 9 15 71 20 305 8.9 11.2 5 7 2 0 0 1 13 48 29 19 4 8 3 10 30 29 208 11.2 13.4 8 0 2 0 0 0 9 27 21 19 1 0 6 17 11 10 131 13.4 17.9 0 0 0 0 0 0 2 9 23 39 6 1 6 11 6 19 122 17.9 22.4 0 0 0 0 0 0 2 3 11 22 1 0 5 1 6 2 53 22.4 29.1 0 0 0 0 0 0 0 0 2 14 2 0 1 0 0 0 19 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 120 95 78 18 12 15 120 269 239 204 62 48 86 159 320 218 2063 Perods of Calm while In Stability Class: A B C D E F G Total 0 1 0 31 38 35 32 137 Columbia Generating Station 34 2010 Radioactive Effluent Report Columbia Generating Station 34 2010 Radioactive Effluent Report Table 5-8 4th Quarter Average, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:
245 Start Date: 10/1/2010 Total number of Periods: 2208 Period: 4th Quarter Stop Date: 12/31/2010 Periods of No Data Recovery:
32 System Percent Data Recovery:
98.6%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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 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 0 0 0 0 0 0 1 1 0 0 0 0 0 2 2.2 4.5 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 1 1 0 0 0 0 1 0 0 2 1 0 0 0 0 1 7 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 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 3 6 4.5 6.7 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 4 6.7 8.9 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 3 6 8.9 11.2 0 0 0 0 0 0 0 3 1 0 0 0 0 0 0 2 6 11.2 13.4 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2 13.4 17.9 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2 4 17.9 22.4 1 0 0 0 0 0 0 0 0 3 2 0 0 0 0 3 9 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 7 3 0 0 0 0 1 3 1 3 3 1 0 0 0 15 37 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 8 3 12 6 0 1 3 3 1 3 2 2 1 3 5 5 58 2.2 4.5 17 5 7 3 3 1 3 14 6 6 6 3 4 7 9 17 111 4.5 6.7 6 6 9 1 1 0 3 6 11 2 1 2 3 7 8 11 77 6.7 8.9 1 3 3 5 0 0 2 6 6 2 4 2 2 3 10 7 56 8.9 11.2 3 4 5 1 0 0 6 9 13 5 0 5 0 4 11 8 74 11.2 13.4 7 3 1 0 0 0 1 2 7 9 3 1 0 5 17 18 74 13.4 17.9 16 0 0 0 0 0 1 5 6 6 3 2 2 8 19 13 81 17.9 22.4 0 0 0 0 0 0 1 0 2 25 4 0 0 9 6 10 57 22.4 29.1 0 0 0 0 0 0 0 1 3 13 6 0 4 1 7 3 38 29.1 40.3 0 0 0 0 0 0 0 0 0 5 8 0 0 0 0 0 13 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 58 24 37 16 4 2 20 46 55 76 37 17 16 47 92 92 639 Columbia Generating Station 35 2010 Radioactive Effluent Report Table 5-8 4th Quarter Average, 245 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 1 3 2 2 2 5 2 2 2 4 3 4 2 5 2 47 2.2 4.5 7 8 7 4 2 9 14 15 4 3 5 5 2 6 11 9 111 4.5 6.7 7 7 5 4 0 1 2 7 12 4 2 0 0 5 11 10 77 6.7 8.9 2 4 2 0 0 2 7 9 9 4 2 1 0 6 15 5 68 8.9 11.2 3 4 3 1 0 3 8 11 13 7 4 1 1 6 17 7 89 11.2 13.4 0 1 2 0 0 0 10 10 11 11 2 0 0 9 25 4 85 13.4 17.9 5 0 2 0 0 0 6 19 21 21 13 1 2 12 29 16 147 17.9 22.4 1 0 0 0 0 0 1 5 13 22 13 1 2 8 5 0 71 22.4 29.1 0 0 0 0 0 0 0 2 4 13 3 0 3 10 0 0 35 29.1 40.3 0 0 0 0 0 0 0 0 0 13 2 0 2 1 0 0 18 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 3 TOTALS 31 25 24 11 4 17 53 80 89 100 50 13 18 65 118 53 751 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 1 1 0 1 4 2 2 1 2 1 1 1 1 2 23 2.2 4.5 6 4 3 2 1 3 5 4 7 5 4 4 3 6 3 9 69 4.5 6.7 9 4 5 1 1 1 3 11 8 7 5 0 0 1 4 13 73 6.7 8.9 6 4 2 3 0 0 2 3 13 6 2 3 0 3 5 18 70 8.9 11.2 1 0 2 1 0 0 4 2 9 2 0 0 1 7 6 3 38 11.2 13.4 0 0 1 0 0 0 4 13 8 5 2 0 1 1 3 5 43 13.4 17.9 0 0 2 0 0 0 1 7 10 8 2 0 1 4 12 9 56 17.9 22.4 0 0 0 0 0 0 0 1 5 5 0 0 3 2 1 2 19 22.4 29.1 0 0 0 0 0 0 0 0 0 4 0 0 0 1 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 23 14 16 8 2 5 23 43 62 43 17 8 10 26 35 61 396 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 1 1 0 1 1 3 1 2 2 2 3 3 2 1 0 1 24 2.2 4.5 3 2 5 2 1 1 2 6 7 2 2 2 4 2 1 3 45 4.5 6.7 4 9 9 0 2 0 1 8 7 7 4 0 2 0 3 5 61 6.7 8.9 7 0 4 4 1 0 5 13 3 5 1 1 3 3 3 10 63 8.9 11.2 2 0 4 0 0 0 3 3 5 2 0 0 0 1 3 10 33 11.2 13.4 0 0 0 0 0 0 0 2 3 2 0 0 0 0 3 2 12 13.4 17.9 1 0 0 0 0 0 0 2 3 1 0 0 0 1 5 3 16 17.9 22.4 0 0 0 0 0 0 0 1 0 0 0 0 0 2 0 1 4 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 18 12 22 7 5 4 12 37 30 21 10 6 11 10 18 35 258 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 16 7 16 10 3 7 13 9 7 9 12 9 8 7 11 10 154 2.2 4.5 36 22 22 11 7 14 25 40 24 16 17 14 13 21 24 42 348 4.5 6.7 28 26 28 6 4 2 9 32 38 20 12 2 5 13 26 41 292 6.7 8.9 17 12 11 12 1 2 17 31 31 17 9 7 5 15 33 43 263 8.9 11.2 9 8 14 3 0 3 21 28 41 16 4 6 2 18 37 30 240 11.2 13.4 8 4 4 0 0 0 15 27 29 27 7 2 1 15 48 29 216 13.4 17.9 23 0 4 0 0 0 8 33 40 36 19 3 5 25 65 44 305 17.9 22.4 2 0 0 0 0 0 2 7 20 56 19 1 5 21 12 16 161 22.4 29.1 0 0 0 0 0 0 0 3 7 30 9 0 7 12 7 3 78 29.1 40.3 0 0 0 0 0 0 0 0 0 18 10 0 2 1 0 0 31 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 3 ItOTALS 139 79 99 42 15 28 110 210 237 245 118 45 55 148 263 258 2091 Periods of Calm while In Stability Class: I A B C D E F G TotalI 1 0 0 40 24 9 11 851 Columbia Generating Station 36 2010 Radioactive Effluent Report Table 5-9 Year 2010, 33 Ft AGL Hours at each wind speed and direction during time period Elevation:
33 Start Date: 1/1/2010 Total number of Periods: 8759 Period: Annual Stop Date: 12/31/2010 Periods of No Data Recovery:
375 System Percent Data Recovery:
95.7%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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2.2 4.5 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 4.5 6.7 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 6.7 8.9 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 5 7 8.9 11.2 3 1 0 0 0 0 0 2 3 0 0 0 0 0 0 1 10 112 13.4 5 4 0 0 0 0 0 0 5 0 0 0 0 0 2 2 18 13.4 17.9 3 0 0 0 0 0 0 0 8 0 3 0 0 0 1 1 16 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 2 2 2 0 7 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 8 2 0 11 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 3 2 0 1 0 6 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 13 7 1 0 0 0 0 3 16 2 3 3 4 10 8 10 80 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 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2 2.2 4.5 4 3 0 0 0 0 1 0 0 0 0 1 2 0 0 5 16 4.5 6.7 3 1 0 0 0 0 0 0 2 0 0 0 1 1 0 7 15 6.7 8.9 10 7 0 0 0 0 0 0 2 1 1 0 0 0 2 11 34 8.9 11.2 5 3 2 0 0 0 0 4 10 1 0 0 1 1 0 4 31 11.2 13.4 2 1 0 0 0 0 0 2 10 3 0 0 0 3 3 0 24 13.4 17.9 4 2 0 0 0 0 1 2 3 5 4 2 1 4 0 3 31 17.9 22.4 0 0 0 0 0 0 0 0 0 2 0 1 0 1 0 0 4 22.4 29.1 0 0 0 0 0 0 0 0 0 2 1 2 0 3 0 0 8 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 2 40.3 90.0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 TOTALS 28 18 2 0 0 0 2 8 27 15 7 7 5 14 5 30 168 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 7 5 3 1 1 2 0 0 0 1 3 1 1 0 3 4 32 2.2 4.5 23 11 14 0 0 1 1 7 9 2 4 2 2 3 8 32 119 4.5 6.7 25 17 8 3 2 2 8 23 24 2 7 7 4 2 8 25 167 6.7 8.9 18 11 1 1 1 2 6 21 15 6 1 3 6 2 5 24 123 8.9 11.2 12 7 4 3 2 0 0 12 27 10 7 6 6 5 1 5 107 112 13.4 6 0 1 2 2 2 1 3 18 10 5 4 4 6 2 7 73 13.4 17.9 3 2 0 1 1 0 3 7 11 12 10 3 3 5 4 6 71 17.9 22.4 0 0 0 0 0 0 0 0 0 5 4 3 0 2 2 1 17 22.4 29.1 0 0 0 0 0 0 0 0 0 0 1 0 1 3 1 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 0 1 2 0 0 4 40.3 90.0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 TOTALS 94 53 31 12 9 9 19 73 104 49 42 29 28 30 34 104 720 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 12 14 25 13 17 7 10 24 16 23 11 10 12 9 20 22 245 2.2 4.5 42 45 51 17 11 16 64 57 49 24 22 24 24 31 40 58 575 4.5 6.7 30 43 51 13 10 19 47 67 41 25 21 22 14 20 35 51 509 6.7 8.9 12 17 25 7 4 13 37 48' 38 22 15 9 10 20 61 39 377 8.9 11.2 6 13 6 7 5 8 25 34 44 17 9 12 9 25 49 44 313 11.2 13.4 13 3 2 3 0 4 11 19 23 15 9 7 7 27 11 9 163 13.4 17.9 5 4 2 1 0 1 7 19 28 40 15 12 8 27 19 20 208 17.9 22.4 0 0 0 0 0 0 3 4 10 17 13 4 7 35 19 2 114 22.4 29.1 0 0 0 0 0 0 0 0 2 15 3 3 4 23 4 0 54 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 3 40.3 90.0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 TOTALS 120 139 162 61 47 68 204 273 251 198 118 103 95 218 260 245 2562 Columbia Generating Station 37 2010 Radioactive Effluent Report Table 5-9 Year 2010, 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 12 12 7 7 7 3 18 10 16 24 14 12 17 23 18 27 227 2.2 4.5 48 28 18 5 2 14 28 33 51 41 18 30 22 36 77 57 508 4.5 6.7 30 17 16 9 0 5 21 54 44 22 19 24 24 39 76 51 451 6.7 8.9 5 6 7 0 0 5 44 80 41 23 12 7 21 38 81 26 396 8.9 11.2 2 2 1 0 0 3 23 41 29 27 12 10 18 42 33 17 260 11.2 13.4 0 2 0 0 1 0 11 27 24 38 3 2 10 34 19 9 180 13.4 17.9 0 0 0 0 0 0 2 9 16 25 11 2 8 52 5 2 132 17.9 22.4 0 0 0 0 0 0 1 2 8 21 6 5 4 8 1 0 56 22.4 29.1 0 0 0 0 0 0 0 0 2 6 1 1 2 2 0 0 14 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 97 67 49 21_ _10 30 148 256 231 227 97 94 127 274 310 189 2227 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 23 23 12 11 5 6 11 23 23 14 13 12 15 12 16 17 236 2.2 4.5 52 34 25 6 1 7 18 58 48 26 11 8 14 32 56 57 453 4.5 6.7 17 14 19 2 1 1 22 65 48 21 10 4 12 25 55 53 369 6.7 8.9 7 4 5 0 0 2 16 68 35 14 3 3 6 14 46 9 232 8.9 11.2 0 2 4 0 0 0 9 37 12 7 0 1 8 7 8 0 95 11.2 13.4 0 0 1 0 0 0 2 10 6 2 0 0 2 3 2 0 28 13.4 17.9 0 0 0 0 0 0 0 3 2 2 0 0 0 1 0 0 8 17.9 22.4 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 3 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 99 77 66 19 7 16 78 264 175 88 37 28 57 94 183 136 12 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 18 22 12 3 2 4 2 8 12 9 6 4 3 9 17 23 154 2.2 4.5 50 59 24 2 1 0 17 36 25 11 7 5 7 12 33 65 354 4.5 6.7 18 8 9 1 0 0 11 45 13 8 2 1 0 3 28 39 186 6.7 8.9 0 1 3 0 0 0 5 33 17 2 0 0 2 5 18 8 94 8.9 11.2 0 0 3 0 0 0 0 15 2 0 0 0 0 1 6 0 27 11.2 13.4 0 0 2 0 0 0 0 1 1 0 0 0 2 0 0 0 6 13.4 17.9 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 86 90 53 6 3 4 35 138 71 30 15 10 14 30 102 135 822 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 72 77 60 35 32 22 41 65 67 72 47 39 48 53 74 93 897 2.2 4.5 220 180 132 30 15 38 129 192 182 104 62 70 71 114 214 275 2028 4.5 6.7 123 101 103 28 13 27 109 254 172 78 59 58 55 90 202 226 1698 6.7 8.9 53 47 41 8 5 22 108 250 148 68 32 22 45 79 213 122 1263 8.9 11.2 28 28 20 10 7 11 57 145 127 62 28 29 42 81 97 71 843 11.2 13.4 26 10 6 5 3 6 25 62 87 68 17 13 25 73 39 27 492 13.4 17.9 15 8 2 2 1 1 13 40 69 84 43 19 20 89 29 32 467 17.9 22.4 0 0 0 0 0 0 4 6 19 48 23 13 13 48 24 3 201 22.4 29.1 0 0 0 0 0 0 0 0 4 24 6 6 7 39 7 0 93 29.1 40.3 0 0 0 0 0 0 0 0 0 1 1 5 4 4 3 0 18 40.3 90.0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 3 ITOTALS 537 451 364 119 76 127 486 1015 875 609 319 274 330 670 902 849 8003 Peosof Calm while in Stability Class: A B C E F Total i 0 1 4 87 115 97 77 3811 Columbia Generating Station Colmbi GeeraingStaion38 2010 Radioactive Effluent Report Table 5-10 Year 2010, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:
245 Start Date: 1/11/2010 Total number of Periods: 8759 Period: Annual Stop Date: 12/31/2010 Periods of No Data Recovery:
272 System Percent Data Recovery:
96.9%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 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 6.7 8.9 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 8.9 11.2 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 4 6 11.2 13.4 7 2 0 0 0 0 0 0 4 0 0 0 0 0 0 2 15 13.4 17.9 0 3 2 0 0 0 0 0 7 3 0 0 0 0 2 2 19 17.9 22.4 0 2 0 0 0 0 0 0 1 3 2 0 0 0 2 0 10 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 2 2 1 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 0 8 3 0 12 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 4 0 0 0 5 TOTALS 11 7 2 1 0 0 0 2 12 7 3 1 6 10 8 9 79 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 1 0 0 0 0 0 0 1 1 0 0 0 0 0 3 2.2 4.5 4 1 0 0 1 0 1 0 1 0 0 1 0 0 0 1 10 4.5 6.7 3 1 0 0 0 0 0 0 0 0 0 1 0 1 0 6 12 6.7 8.9 6 8 1 0 0 0 0 0 1 2 0 0 0 0 2 3 23 8.9 11.2 5 4 1 0 0 0 0 2 5 1 1 0 2 0 1 11 33 11.2 13.4 3 4 2 0 0 0 0 0 5 6 0 0 1 1 0 0 22 13.4 17.9 2 3 1 0 0 0 0 1 9 4 3 1 1 2 6 2 35 17.9 22.4 1 1 0 0 0 0 1 0 1 6 3 3 0 2 1 0 19 22.4 29.1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 3 29.1 40.3 0 0 0 0 0 0 0 0 0 1 1 2 0 1 2 0 7 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 2 TOTALS 24 22 6 0 1 0 2 3 22 22 10 9 4 9 12 23 169 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 5 1 1 0 0 1 0 1 0 2 1 1 0 0 5 2 20 2.2 4.5 20 15 9 3 0 0 2 1 6 2 4 2 0 3 5 21 93 4.5 6.7 11 11 9 7 1 2 1 9 14 9 2 1 3 2 8 21 111 6.7 8.9 21 17 3 2 1 1 6 21 18 7 2 10 7 4 6 25 151 8.9 11.2 12 11 4 3 1 2 2 10 23 7 2 3 3 1 3 10 97 11.2 13.4 8 4 1 0 3 0 0 0 21 16 9 2 8 2 0 6 80 13.4 17.9 6 2 2 2 5 1 3 4 18 26 9 5 8 8 2 6 107 17.9 22.4 1 0 0 0 0 0 1 0 1 10 14 2 3 6 3 3 44 22.4 29.1 0 0 0 0 0 0 0 0 0 3 4 3 0 1 2 1 14 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 1 2 2 0 6 40.3 90.0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 3 TOTALS 84 61 29 17 11 7 15 46 101 83 48 29 34 30 36 95 726 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 12 12 24 17 13 10 13 8 17 13 6 10 3 9 10 13 190 2.2 4.5 36 28 41 22 12 10 32 63 35 25 29 18 20 19 28 43 461 4.5 6.7 22 23 39 20 8 16 46 62 45 21 19 16 14 16 21 48 436 6.7 8.9 15 27 24 21 8 8 21 41 48 18 16 20 7 10 33 34 351 8.9 11.2 8 12 9 14 4 7 29 24 40 25 13 14 7 17 37 25 285 11.2 13.4 12 9 4 4 4 6 10 12 35 21 10 6 5 24 46 32 240 13.4 17.9 24 3 4 0 3 4 18 24 38 32 21 13 12 31 37 21 285 17.9 22.4 1 3 3 0 0 2 5 4 10 41 12 5 7 26 16 16 151 22.4 29.1 0 0 0 0 0 2 0 4 6 29 22 8 10 32 25 3 141 29.1 40.3 0 0 0 0 0 0 0 0 0 12 15 3 6 34 11 0 81 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 130 117 148 98 52 65 174 242 274 237 163 113 91 218 264 235 2621 Columbia Generating Station 39 2010 Radioactive Effluent Report Table 5-10 Year 2010, 245 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 4.5 6.7 8.9 11.2 13.4 17.9 22A 29.1 40.3 2.2 14 6 9 4.5 20 15 17 6.7 19 14 17 8.9 14 15 5 11.2 11 10 10 13.4 5 3 6 17.9 12 4 7 22.4 1 0 1 29.1 0 0 0 40.3 0 0 0 90.0 0 0 0 7 4 4 9 8 20 8 4 6 4 0 6 5 0 5 1 1 1 0 0 2 0 1 2 0 0 0 0 0 0 a 0 D 8 10 4 9 9 6 6 5 11 6 118 27 25 21 13 15 17 12 19 22 25 285 14 23 25 14 9 8 10 18 36 33 258 10 30 24 17 10 10 11 29 40 35 260 20 21 40 29 9 9 19 27 52 27 294 16 24 40 23 14 6 15 33 67 18 273 18 42 38 52 29 10 12 69 75 34 404 3 8 21 41 32 6 13 75 31 8 243 0 5 4 33 12 6 4 69 1 0 134 0 0 0 19 6 6 3 8 0 0 42 0 0 0 0 0 1 2 0 0 0 3 ITOTALS 96 67 72 34 18 46 116 188 217 250 145 85 107 352 335 186 2314 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 6 6 4 2 5 6 5 7 4 6 3 5 4 5 6 79 2.2 4.5 20 16 16 18 10 11 13 22 28 17 22 13 5 15 17 27 270 4.5 6.7 20 19 12 5 4 3 18 31 32 19 16 5 6 16 14 37 257 6.7 8.9 15 14 17 10 0 0 12 30 35 23 10 14 6 9 30 45 270 8.9 11.2 9 5 8 2 0 1 13 22 23 18 8 5 3 19 33 19 188 11.2 13.4 0 5 3 1 0 1 11 25 25 16 5 2 11 12 28 13 158 13.4 17.9 2 0 3 2 0 0 5 22 20 23 5 0 8 34 47 24 195 17.9 22.4 0 0 3 5 0 0 0 3 11 8 1 0 4 25 8 5 73 22.4 29.1 0 0 2 0 0 0 0 1 0 5 0 0 0 9 0 0 17 29.1 40.3 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 71 65 70 47 16 21 78 161 181 135 74 42 48 143 182 176 1510 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 7 4 1 5 5 5 5 5 8 7 10 4 5 4 2 6 83 2.2 4.5 14 11 15 8 1 7 10 16 23 13 5 8 10 5 7 15 168 4.5 6.7 27 21 13 3 3 4 6 21 24 17 8 4 4 1 8 15 179 6.7 8.9 16 7 9 6 1 0 10 34 17 15 6 1 3 4 9 35 173 8.9 11.2 10 2 9 1 0 0 6 10 12 14 1 0 0 1 19 26 111 112 13.4 3 0 1 0 0 0 1 9 7 5 2 0 0 1 15 13 57 13.4 17.9 2 0 0 0 0 0 2 8 5 7 1 0 1 9 34 14 83 17.9 22.4 0 0 1 1 0 0 0 3 0 1 0 0 0 3 1 3 13 22.4 29.1 0 0 2 0 0 0 0 0 0 0 0 0 0 3 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 79 45 51 24 10 16 40 106 96 79 33 17 23 31 95 127 872 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 43 29 42 33 24 25 32 29 36 36 33 24 19 22 33 33 493 2.2 4.5 115 86 98 60 32 48 85 128 114 70 75 59 47 61 79 133 1290 4.5 6.7 102 89 90 44 20 31 85 146 140 80 54 35 37 54 87 160 1254 6.7 8.9 89 88 59 43 10 15 59 156 143 82 44 55 34 56 120 177 1230 8.9 11.2 56 44 41 25 5 15 70 90 143 94 34 31 34 65 145 122 1014 11.2 13.4 38 27 17 6 8 8 38 70 137 87 40 16 40 73 156 84 845 13.4 17.9 48 15 19 4 8 7 46 101 135 147 68 29 42 153 203 103 1128 17.9 22.4 4 6 8 6 1 4 10 18 45 110 64 16 27 137 62 35 553 22.4 29.1 0 0 4 0 0 2 0 10 10 72 39 17 16 117 29 4 320 29.1 40.3 0 0 0 0 0 0 0 0 0 34 25 11 10 53 18 0 151 40.3 90.0 0 0 0 0 0 0 0 0 0 1 0 3 7 2 0 0 13 TOTALS 495 384 378 221 108 155 425 748 903 813 476 296 313 793 932 851 8291 Periods of Calm while in Stability Class: A B C D E F G Total 1 0 5 80 51 28 31 196 I Columbia Generating Station 40 2010 Radioactive Effluent Report Table 5-11 Year 2010 Growing Season with Solar Irradiance
> 5 watts/m 2 33 Ft AGL 1-Inura at ~i~h wind imnaad and dimntinn dudnn tirna narind Elevation:
33 StartDate:
4/1512010 Total number of Periods: 2360 Period: Growing Season Stop Date: 10/15/2010 Periods of No Data Recovery:
211 System Percent Data Recovery:.
91.8%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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.2 4.5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 4.5 6.7 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 6.7 8.9 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 4 10 8.9 11.2 3 1 0 0 0 0 0 2 3 0 0 0 0 0 0 1 15 11.2 13.4 5 4 0 0 0 0 0 0 5 0 0 0 0 0 2 2 24 13.4 17.9 3 0 0 0 0 0 0 0 8 0 3 0 0 0 1 1 23 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 2 2 2 0 15 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 8 2 0 20 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 3 2 0 1 0 16 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 TOTALS 13 7 1 0 0 0 0 2 16 2 3 3 4 10 8 9 144 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 0 0 0 0 0 0 1 0 0 0 0 0 0 2 2.2 4.5 3 2 0 0 0 0 1 0 0 0 0 1 2 0 0 4 15 4.5 6.7 3 1 0 0 0 0 0 0 2 0 0 0 1 1 0 5 16 6.7 8.9 7 7 0 0 0 0 0 0 2 1 1 0 0 0 1 10 33 8.9 11.2 5 3 2 0 0 0 0 4 10 1 0 0 1 1 0 4 36 11.2 13.4 2 1 0 0 0 0 0 2 10 2 0 0 0 3 3 0 29 13.4 17.9 2 0 0 0 0 0 0 2 3 2 4 2 1 3 0 1 27 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 9 22.4 29.1 0 0 0 0 0 0 0 0 0 1 1 1 0 3 0 0 15 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 12 40.3 90.0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 12 TOTALS 22 14 2 0 0 0 1 8 27 8 7 5 5 13 4 24 206 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 4 1 1 1 2 0 0 0 1 3 1 0 0 1 3 23 2.2 4.5 14 9 12 0 0 1 1 7 9 2 4 2 2 3 8 14 90 4.5 6.7 17 13 7 3 2 2 8 23 23 2 7 5 3 2 6 14 140 6.7 8.9 7 9 1 1 1 2 6 17 13 6 1 2 5 2 4 14 95 8.9 11.2 8 3 4 3 2 0 0 11 23 8 5 5 3 2 1 4 87 11.2 13.4 3 0 0 2 1 1 1 3 16 7 2 4 3 3 1 3 56 13.4 17.9 0 1 0 1 0 0 2 7 11 5 2 2 3 3 4 0 48 17.9 22.4 0 0 0 0 0 0 0 0 0 3 0 2 0 2 2 1 18 22.4 29.1 0 0 0 0 0 0 0 0 0 0 1 0 0 3 1 0 14 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 0 1 2 0 0 14 40.3 90.0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 12 TOTALS 53 39 25 12 7 8 18 68 95 35 25 23 20 22 28 53 597 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 4 4 15 8 13 2 3 11 5 7 7 2 4 1 1 5 93 22 4.5 7 19 29 12 8 14 48 32 20 10 13 11 12 10 6 9 262 4.5 6.7 10 15 26 10 10 17 40 41 23 16 13 16 5 6 7 9 267 6.7 8.9 6 10 16 7 4 12 26 28 20 8 6 6 5 8 9 5 180 8.9 11.2 4 5 5 7 5 8 19 21 28 9 4 5 5 14 5 7 156 11.2 13.4 4 1 0 3 0 4 8 16 18 5 5 5 3 5 2 1 86 13.4 17.9 1 1 2 1 0 1 2 18 16 7 5 4 4 12 8 1 90 17.9 22.4 0 0 0 0 0 0 0 1 1 2 4 1 1 17 6 0 41 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 1 2 18 4 0 34 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 13 40.3 90.0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 12 tOTALS 36 55 93 48 40 58 146 169 131 64 57 51 41 92 50 37 1234 Columbia Generating Station 41 2010 Radioactive Effluent Report Table 5-11 Year 2010 Growing Season with Solar Irradiance
> 5 watts/m 2 , 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 3 1 2 3 0 4 0 1 1 0 1 0 2 2 3 26 2.2 4.5 8 3 3 1 0 3 9 11 6 5 3 2 2 2 3 4 67 4.5 6.7 4 4 3 2 0 0 5 14 3 4 1 2 2 5 3 2 57 6.7 8.9 0 1 2 0 0 2 14 5 6 7 3 0 1 1 2 3 51 8.9 11.2 0 1 0 0 0 1 6 6 7 1 0 0 1 4 2 3 37 11.2 13.4 0 1 0 0 0 0 4 4 1 2 0 1 0 2 2 1 24 13.4 17.9 0 0 0 0 0 0 0 0 1 0 1 0 0 6 0 1 16 17.9 22.4 0 0 0 0 0 0 0 0 3 0 0 1 0 0 0 0 12 22.4 29.1 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 11 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 TOTALS 14 13 9 5 3 6 42 40 29 20 8 7 7 22 14 17 322 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 5 3 2 1 1 2 5 2 0 0 2 2 0 0 2 29 2.2 4.5 5 5 1 0 0 1 5 9 5 2 1 0 0 2 1 2 41 4.5 6.7 1 6 9 0 0 0 1 14 7 2 0 0 0 0 1 1 45 6.7 8.9 0 0 0 0 0 0 1 5 1 0 0 0 0 0 1 0 12 8.9 11.2 0 0 0 0 0 0 1 3 2 0 0 0 0 0 0 0 11 11.2 13.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 7 13.4 17.9 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 8 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 TOTALS 7 16 13 2 1 2 10 36 18 5 1 2 2 2 3 5 191 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 3 1 2 0 0 0 0 1 0 0 0 0 0 0 2 2 12 2.2 4.5 5 9 4 0 0 0 5 5 1 0 0 0 0 0 2 1 34 4.5 6.7 0 1 1 0 0 0 2 4 2 1 0 0 0 0 1 1 16 6.7 8.9 0 0 0 0 0 0 1 4 0 0 0 0 0 0 0 0 9 8.9 11.2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 6 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 TOTALS 8 11 7 0 0 0 8 15 3 1 0 0 0 0 5 4 128 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 14 17 23 13 18 5 9 17 8 10 10 6 6 3 6 15 180 2.2 4.5 43 47 49 13 8 19 69 64 41 19 21 16 18 17 20 35 499 4.5 6.7 35 41 46 15 12 19 56 96 60 25 21 23 11 14 18 32 524 6.7 8.9 21 28 19 8 5 16 48 59 42 22 11 8 11 11 17 36 362 8.9 11.2 20 13 11 10 7 9 26 48 73 19 9 10 10 21 8 19 313 11.2 13.4 14 7 0 5 1 5 13 25 50 17 7 10 6 13 10 7 190 13.4 17.9 6 2 2 2 0 1 4 27 40 14 15 8 8 24 13 4 170 17.9 22.4 0 0 0 0 0 0 0 1 4 6 4 4 3 22 10 1 55 22.4 29.1 0 0 0 0 0 0 0 0 1 2 2 2 3 32 7 0 49 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 4 3 4 3 0 15 40.3 90.0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 3[TOTALS 153 155 150 67 51 74 225 338 319 135 101 91 79 161 112 149 2360 Periods of Calm while in Stability Class: A B C D E F G Total 1 3 22 15 13 4 0 58 Columbia Generating Station 42 2010 Radioactive Effluent Report 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 2010.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 6-1 shows the highest calculated doses at the site boundary and beyond the site boundary.
Table 6-1 also shows the quarterly and annual dose for the nearest and highest exposed resident identified in the land use census. Table 6-2 lists the annual 50-mile dose using values obtained from the ALARA annual integrated population dose summary (person-rem).
Table 6-2 also provides the annual individual doses associated with each pathway. These values were obtained by dividing the ALARA integrated dose (person-rem) by the estimated year 2000 50-mile population (356,993) 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 2010 Land Use Census did not identify broad leaf vegetable gardens or milk animals within the 5-mile radius. Cattle, goats, and horses were observed within 5-miles. Although it was not determined if the nearest residents were actually consuming meat from these animals, the beef and goat meat pathways were assumed in the sectors where these animals were observed.
The NRC computer code GASPAR was used for dose estimates.
Because the GASPAR code only calculates a beef meat pathway, IAEA Technical Series Report 4721 was used to derive nuclide-specific ratios to convert the GASPAR meat dose output to dose from goat meat. 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 assumes that if there is a vegetable pathway, the pathway includes broad-leaf vegetables even though they were not observed.
As such, the vegetation calculations are conservative.
Based on Electric Power Research Institute (EPRI) Technical Report 10211062, the total activity of Carbon-14 (C-14) released to the environment as 14CO 2 was estimated to be 17.8 +/- 2.1 Curies. As C-14 in the form of 1 4 CO 2 is a non-depositing, gaseous effluent, it enters the food chain through plant photosynthesis.
Since Columbia Generating Station is a continuous release plant, normally, offsite dose is based on meteorological data throughout the year. For C-14 dose analysis, however, a Joint Frequency Distribution (JFD) table of atmospheric data was developed based on daylight hours (solar irradiance
> 5 watts per square meter)during the growing season of both vegetables and pasture grass for beef (April 15th through October 15th). The JFD table was used as input into the NRC XOQDOQ computer code from which dispersion estimates were obtained.
This method 1 Handbook Of Parameter Values For The Prediction Of Radionuclide Transfer In Terrestrial And Freshwater Environments, IAEA Technical Series Report 472, 2010 2 Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents.
EPRI, Palo Alto, CA: 2010 1021106 Columbia Generating Station 43 2010 Radioactive Effluent Report provides a more accurate method of determining the average air concentration of C-14 during times of photosynthesis.
Both inhalation and ingestion pathways contribute to dose from C-14. The highest dose calculated was for the resident at 4.24 miles in the ESE sector due to higher dispersion and deposition in that sector. The annual dose to the potential maximally exposed individual (child living at resident location 4.24 miles ESE) from gaseous releases of C-14 is 7.12E-02 mrem to the critical organ (bone) and 1.42E-02 mrem to the total body. The available dose pathways at this location were inhalation and the ingestion of fruits and non-leafy vegetables.
This dose is only included in Table 6.0-C of this section because of the significant difference in the JFD tables used for the above dose analysis as compared to the JFD tables with all atmospheric data for 2010.For all other gaseous releases, the highest calculated dose to a child living at locations identified in the most recent land use census was 2.83E-03 mrem to the total body, 3.14E-03 mrem to the thyroid, and 4.30E-03 mrem to the skin. This location was at 4.24 miles in the East South East sector.Periodically, Columbia Generating Station offers public tours of selected locations within the site boundary.
Calculations assumed an eight (8) hour per year exposure to the plume, ground shine, and inhalation pathways.
The organ with the highest dose was the skin at 6.05E-04 mrem.During 2010, Members of the Public worked at the Industrial Development area in the E and ESE sectors of the owner controlled area. The maximum dose to these individuals was also calculated assuming adult exposure to the plume, inhalation, and ground deposition pathways.The following table (6.0-A) 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 total indicated hours spent at each location.Table 6.0-A; Estimated Dose to Members of the Public within the Site Boundary Total Body Thyroid Highest Other Beta Air Gamma Direct Hours Dose Dose Organ Dose Dose Air Dose Radiation Location Spent (mrem) (mrem) (mrem) (mrad) (mrad) , (mrem)Tour Visitors 8.OOE+00 3.81 E-04 3.82E-04 6.05E-04 1.96E-04 5.55E-04 2.11 E-02 Fiding Range 8.OOE+00 4.58E-06 4.59E-06 7.27E-06 2,35E-06 6.66E-06 6.39E-04 WNP-4 Whse.2-4 2.60E+03 2.16E-02 2.17E-02 3.44E-02 4.98E-03 1.41E-02 O.OOE+00 WNP-1 Bldg 121 2.60E+03 9.65E-03 9.66E-03 1.54E-02 1.12E-02 3.17E-02 O.OOE+00 Columbia Generating Station 44 2010 Radioactive Effluent Report Columbia Generating Station 44 2010 Radioactive Effluent Report Table 6.0-B provides the results of annual dose calculations for the highest dose age group for each identified land use census location from gaseous effluents.
The highest 'Other Organ' in all cases was the skin.Table 6.0-B; Estimated Dose to Residents identified in the 2010 Land Use Census Highest Total Body Thyroid Other Organ Beta Gamma Dose Dose Dose Air Dose Air Dose Age Location (mrem) (mrem) (mrem) (mrad) (mrad) Group Resident (4.47 miles NE) 1.02E-03 1.08E-03 1.56E-03 4.88E-04 1.38E-03 Child Resident (4.01 miles ENE) 5.33E-04 6.01E-04 7.85E-04 2.23E-04 6.31E-04 Child Resident (4.59 miles E) 1.95E-03 2.09E-03 2.95E-03 8.86E-04 2.51 E-03 Child Resident (4.65 miles E) 1.96E-03 2.10E-03 2.97E-03 8.88E-041 2.52E-03 Child Resident (4.24 miles ESE) 2.83E-03 3.14E-03 4.30E-03 11.31E-03 3.71E-03 Child Based on the available exposure pathways and the highest dispersion and deposition values, the critical receptor is the resident at 4.24 miles ESE. Table 6.0-C adds the potential dose from Carbon-14 to the above dose estimate.Table 6.0-C; Total Potential Dose to Critical Receptor (4.24 miles ESE)Total Body Bone Thyroid Skin Dose from Carbon-14 1.42E-02 7.12E-02 1.42E-02 1.42E-02 Dose from Other Nuclides 2.83E-03 2.60E-03 3.14E-03 4.30E-03 Total Dose 1.70E-02 7.38E-02 1.73E-02 1.85E-02 For environmental thermoluminescent dosimeter (TLD) stations at or beyond the site boundary where preoperational (background) data was acquired, no increase in the average ambient exposure was observed in 2010 from the preoperational values.Columbia Generating Station 45 2010 Radioactive Effluent Report Dose Tables Dose from Carbon-14 is not included in these tables for reasons discussed earlier in this report.Table 6-1 Summary of Doses from Gaseous Effluents The first six tables in this section show maximum estimated exposure and dose at and beyond the site boundary although no real person is resident at the site boundary.
The maximum exposure and dose beyond the site boundary is estimated for locations with actual residents.
: 1. Maximum Air Dose at the Site Boundary (1.2 miles)1st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*
Beta air dose (mrad) 4.52E-03 4.09E-03 5.82E-03 4.04E-03 1.82E-02 Gamma air dose (mrad) 1.28E-02 1.16E-02 1.65E-02 j 1.15E-02 5.15E-02 2. Maximum Air Dose Beyond the Site Boundary 1 st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*
Beta air dose (mrad) 2.30E-04 3.60E-04 3.48E-04 4.45E-04 1.31E-03 Gamma air dose (mrad) 6.52E-04 1.02E-03 9.88E-04 1.26E-03 3.71 E-03 3. Maximum Annual Dose at the Site Boundary Annual Dose Annual total body dose (mrem) 3.50E-02 Annual skin dose (mrem) 5.57E-02 4. Maximum Annual Dose Beyond the Site Boundary Annual Dose Annual total body dose (mrem) 2.83E-03 Annual skin dose (mrem) 4.30E-03 Columbia Generating Station 46 2010 Radioactive Effluent Report Columbia Generating Station 46 2010 Radioactive Effluent Report Table 6-1 Summary of Doses from Gaseous Effluents (Continued)
: 5. Maximum Organ Dose at the Site Boundary (1.2 miles)6. Maximum Organ Dose Beyond the Site Boundary 1st 2nd 3rd 4th Annual Maximum Organ dose Quarter Quarter Quarter Quarter Cumulative*(mrem) 1.46E-03 1.18E-03 1.12E-03 1.49E-03 4.30E-03 7. Dose to Nearest Residents within 5-Miles in each Sector with Residents 4.47 Miles NE 1st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*
Beta Air Dose (mrad) 5.OOE-05 1.86E-04 1.06E-04 1.01E-04 4.88E-04 Gamma Air Dose (mrad) 1.42E-04 5.28E-04 3.OOE-04 2.87E-04 1.38E-03 Maximum Organ dose (mrem) 1.80E-04 5.94E-04 3.36E-04 3.32E-04 1.56E-03 4.01 Miles ENE 1st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*
Beta Air Dose (mrad) 4.63E-05 2.38E-04 1.42E-04 3.30E-05 2.23E-04 Gamma Air Dose (mrad) 1.31 E-04 6.74E-04 4.02E-04 9.35E-05 6.31 E-04 Maximum Organ dose (mrem) 1.67E-04 7.62E-04 4.52E-04 1.27E-04 7.85E-04 4.59 Miles E 1st 2nd 3 rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*
Beta Air Dose (mrad) 1.71 E-04 2.03E-04 1.77E-04 1.70E-04 8.86E-04 Gamma Air Dose (mrad) 4.86E-04 5.75E-04 5.01 E-04 4.82E-04 2.51 E-03 Maximum Organ dose (mrem) 6.06E-04 6.74E-04 5.85E-04 6.17E-04 2.95E-03 Columbia Generating Station 47 2010 Radioactive Effluent Report Table 6-1 Summary of Doses from Gaseous Effluents (Continued)
: 7. Dose to Nearest Residents within 5-Miles in each Sector with Residents (Continued) 4.65 Miles E_1 s2 Wna J ra 4tn Annual Quarter Quarter Quarter Quarter Cumulative*
Beta Air Dose (mrad) [ 1.75E-04 1.99E-04 1.73E-04 1.70E-04 8.88E-04 Gamma Air Dose (mrad) 4.97E-04 5.62E-04 4.90E-04 4.82E-04 2.52E-03 Maximum Organ dose (mrem) 6.25E-04 6.61 E-04 5.75E-04 6.22E-04 2.97E-03 4.24 Miles ESE 1st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*
Beta Air Dose (mrad) 2.30E-04 3.60E-04 3.48E-04 4.45E-04 1.31 E-03 Gamma Air Dose (mrad) 6.52E-04 1.02E-03 9.88E-04 1.26E-03 3.71 E-03 Maximum Organ dose (mrem) 7.75E-04 1.18E-03 1.12E-03 1.49E-03 4.30E-03 Rather than the sum of the quarters, the Annual Cumulative values are based on annual meteorological data and total annual effluents.
For each time period, the dose 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 (1974) which includes the prospective dose component arising from retention in the body beyond the period of environmental exposure.Columbia Generating Station 48 2010 Radioactive Effluent Report Columbia Generating Station 48 2010 Radioactive Effluent Report Table 6-2 50-Mile Population Dose from Gaseous Effluents A. 50-mile population collective dose Exposure Total Body Max. Organ Pathway (person-rem) (person-rem)
Plume 1.35E-02 2.39E-02 Ground 4.88E-04 5.73E-04 Inhalation 3.58E-03 3.58E-03 Vegetables 2.93E-03 2.90E-03 Milk 1.06E-03 1.01 E-03 Meat 5.33E-04 5.18E-04 Total 2.21 E-02 3.25E-02 B. Average Individual*
Exposure Total Body Max. Organ Pathway (mrem) (mrem)Plume 3.78E-05 6.69E-05 Ground 1.37E-06 1.61 E-06 Inhalation 1.OOE-05 1.00E-05 Vegetables 8.21E-06 8.12E-06 Milk 2.97E-06 2.83E-06 Meat 1.49E-06 1.45E-06 Total 6.19E-05 9.10E-05* These values are derived by dividing the 50-mile population collective doses by the population within 50 miles of Columbia Generating Station (356,993).
The population estimate is based on the 2000 census conducted by the United States Census Bureau and documented in the Columbia Generating Station Final Safety Analysis Report. The Maximum Organ was the thyroid.Columbia Generating Station 49 2010 Radioactive Effluent Report Columbia Generating Station 49 2010 Radioactive Effluent Report 7.0 REVISIONS TO THE ODCM No revisions were made to the ODCM in 2010.8.0 REVISIONS TO THE PROCESS CONTROL PROGRAM (PCP)There were no revisions to the Process Control Program in 2010.9.0 NEW OR DELETED LOCATIONS FOR DOSE ASSESSMENTS AND/OR ENVIRONMENTAL MONITORING LOCATIONS 9.1 The 2010 Five-Mile Land Use Census showed some changes which resulted in an additional dose assessment location and additional ingestion pathways.
At 4.65 miles from the plant in the E sector, 5-6 goats were observed.
All but one were juvenile and none were milking goats. To be conservative, although no evidence exists to support the assumption, CGS assumes that they may be raised for meat consumption by a nearby resident.
Although horses were observed 4.4 miles from CGS in the ESE sector, CGS is assuming they are not being raised for meat consumption.
As substantial commercial fruit orchards and corn crops were observed in all eastern sectors with residents, it is assumed that these crops are being consumed by the residents of those sectors. The following table summarizes the assumed dose pathways: Ingestion Plume Ground Inhalation Fruit or Beef Goat Location I Shine Vegetation Meat I Meat Resident (4.47 miles NE) X X X X Resident (4.01 miles ENE) X X X X X Resident (4.59 miles E) X X X X Resident (4.65 miles E) X X X X X Resident (4.24 miles ESE) X X X X 9.2 There were no new locations for environmental monitoring formally adopted into the program based on the 2010 Land Use Census.9.3 No dose assessment or environmental monitoring locations were deleted.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 50 2010 Radioactive Effluent Report Columbia Generating Station 50 2010 Radioactive Effluent Report}}

Revision as of 04:20, 13 August 2018

Columbia Generating Station - Annual Radioactive Effluent Release Report January Through December 2010
ML110680205
Person / Time
Site: Columbia  Energy Northwest icon.png
Issue date: 02/28/2011
From:
Energy Northwest
To:
Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
GO2-11-039
Download: ML110680205 (54)
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Text

N.O.RTHWE:ST Columbia Generating Station Annual Radioactive Effluent Release Report January through December 2010

REFERENCES:

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

CGS Technical Specification 5.6.2 ISFSI Technical Specification 5.4.c Columbia Generating Station Annual Radioactive Effluent Release Report January through December 2010 Energy Northwest Submitted February 2011 Table of Contents

1.0 INTRODUCTION

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

1 2.0 LIQUID EFFLUENTS

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

1 3.0 GASEOUS EFFLUENTS

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

2 Gaseous Effluent Tables ......................................................................

4 Table 3-0 10 CFR Part 50 Appendix I Dose Compliance

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

4 Table 3-1 Main Plant Vent Releases ............................................

.5 Table 3-2 Turbine Building Releases ..............................................

7 Table 3-3 Radwaste Building Releases ............................................

9 Table 3-4 Summation of Releases ...................................................

11 Table 3-5 Gaseous Purges and Vents ............................................

12 Table 3-6 Lower Limits of Detection

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

13 4.0 SOLID RADWASTE ..............................................................................

14 Solid Radwaste Information Required by the Offsite Dose Calculation Manual 14 C lass A .......................................................................................

14 C lass B ..........................................................................................

15 C lass C ..........................................................................................

15 Solid Radwaste Information Recommended by NRC Regulatory Guide 1.21 .... 17 Solid waste shipped offsite for burial or disposal (not irradiated fuel) .................

17 Irradiated Fuel Shipments (Disposition)

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

19 5.0 METEOROLOGICAL DATA .................................................................

20 Joint Frequency Distribution Tables for 2010 .........................................

21 Table 5-1 1st Quarter Average, 33 Ft Above Ground Level AGL ............

21 Table 5-2 1st Quarter Average, 245 Ft AGL .....................................

23 Table 5-3 2nd Quarter Average, 33 Ft AGL .....................................

25 Table 5-4 2nd Quarter Average, 245 Ft AGL ...................................

27 Table 5-5 3rd Quarter Average, 33 Ft AGL ....................................

29 Table 5-6 3rd Quarter Average, 245 Ft AGL .......................................

31 Table 5-7 4th Quarter Average, 33 Ft AGL .....................................

33 Table 5-8 4th Quarter Average, 245 Ft AGL ....................................

35 Table 5-9 Year 2010, 33 Ft AGL ......................................................

37 Table 5-10 Year 2010, 245 Ft AGL ................................................

39 Table 5-11 Year 2010 Growing Season, 33 Ft AGL .............................

41 Columbia Generating Station i 2010 Radioactive Effluent Report Columbia Generating Station i 2010 Radioactive Effluent Report 6.0 DOSE ASSESSMENT

-- IMPACT ON MAN .........................................

43 Dose Tables ....................................................................................

46 Table 6-1 Summary of Doses from Gaseous Effluents

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

46 Table 6-2 50-Mile Population Dose from Gaseous Effluents

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

49 7.0 REVISIONS TO THE ODCM .................................................................

50 8.0 REVISIONS TO THE PROCESS CONTROL PROGRAM (PCP) ..........

50 9.0 NEW OR DELETED LOCATIONS FOR DOSE ASSESSMENTS AND/OR ENVIRONMENTAL MONITORING LOCATIONS

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

50 10.0 MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS .............................................

50 Columbia Generating Station ii 2010 Radioactive Effluent Report

1.0 Introduction

This report has been prepared in compliance with Parts 50 and 72 of Title 10 of the Code of Federal Regulations (CFR), specifically 10 CFR 50.36a(a)(2) and 10 CFR 72.44(d)(3), Independent Spent Fuel Storage Installation (ISFSI) Technical Specification 5.4.c, 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 radwaste released from Columbia Generating Station during calendar year 2010. 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 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 Columbia Generating Station during calendar year 2010. The last planned discharge took place in 1998.In 2010, there were no leaks to the environment of radioactive liquids. The Groundwater Monitoring Program did not indicate any increase in groundwater tritium levels that could be attributed to the operation of Columbia Generating Station.During 2010, the Columbia Generating Station Sanitary Waste Treatment Facility (SWTF) received tritiated water from the Fast Flux Test Facility (FFTF) on the Hanford Site. This water was pumped by FFTF (at between 500 -2,000 gallons/day) from wells on the Hanford Site and ultimately sent to the CGS SWTF.The concentration of tritium varied between 2,000 and 11,000 picoCuries (pCi) per liter. The total combined input into the SWTF averages 20,000 gallons/day from all sources. Approximately 1.5 -2 million gallons of this water is discharged to the ground each year. Assuming an average concentration of 8,000 pCi/liter from FFTF, no evaporation, and no tritium absorption or rainout/washout addition from routine effluent gaseous releases, the released water would contain conservatively 640 pCi/liter and would total about 4.85E9 pCi (0.005 Ci) of tritium.Columbia Generating Station I 2010 Radioactive Effluent Report 3.0 Gaseous Effluents The gaseous radwaste effluents from Columbia Generating Station were released from three (3) 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.

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 radioisotope is not positively identified at levels greater than the Minimum Detectable Activity (MDA), a value of zero is used for release concentrations and offsite dose assessments.

Table 3-6 contains the Lower Limit of Detection (LLD)values corresponding to the sampling methods and analytical instruments used for each principal radioisotope.

Dose calculations were performed for releases using the NRC XOQDOQ and GASPAR II computer programs and parameter values as described in the Offsite Dose Calculation Manual (ODCM) with some exceptions.

A Self-Assessment identified opportunities for improving the accuracy of values presented in ODCM Table 3-13 which describe the characteristics of gaseous effluent release points.The following table (3.0-A) shows values used as input to XOQDOQ which differ from those presented in the ODCM table.Columbia Generating Station 2 2010 Radioactive Effluent Report Table 3.0-A: Deviations from InDut Parameters in ODCM Table 3-13 Reactor Radwaste Bldg Bldg ITurbine Bldg Vent Velocity (m/s)Value in ODCM 10.9 1 3.4 I 19.5 lValue used in XOQDOQ 10.9 0 21.0 XOQDOQ requires the vertical exit velocity.

Release from the Radwaste bldg is horizontal.

Release from the Turbine bldg is vertical and was recalculated.

Vent Inside Diameter (m)IWalue in ODCM I 2.1 I3.8 I 3.3 Value used in XOQDOQ 2.1 0 3.0 NUREG/CR-2919 recommends a value of 0 for ground mode release points (Radwaste bldg). The Turbine bldg value was recalculated.

Average annual heat flow from release point [Heat Emission Rate] (cal/sec)IValue in ODCM I 1.06E+06 I 2.90E+06 t 9.10E+05 IValue used in XOQDOQ 1.59E+05 1.04E+05 8.02fE+05 The heat emission rates were recalculated The XOQDOQ program was also provided with updated terrain elevations out to a 25-mile radius of Columbia Generating Station in each sector. The above changes allowed better modeling of plume vertical momentum and buoyancy resulting in more accurate dispersion and deposition values from those presented in ODCM Tables 3-3, 3-10, and 3-11. The ODCM is in the process of revision to reflect the above changes.Quarterly and annual doses to the potentially highest-exposed Member of the Public 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 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 for Members of the Public within the site boundary.

The results are discussed and tabulated in Section 6.0.It is estimated that approximately 3.25E-03 Curies of tritium were released through unmonitored vents of the heating steam system within and outside the main power block (Turbine, Radwaste, Reactor, and General Services buildings).

No additional spent fuel storage containers (SFSC) were added to the ISFSI facility in calendar year 2010. A total of twenty seven (27) SFSCs were in place in the ISFSI facility at the end of 2010. All SFSCs are Operable and, as such, are performing as designed.

Based on compliance with ISFSI Technical Specification Columbia Generating Station 3 2010 Radioactive Effluent Report Columbia Generating Station 3 2010 Radioactive Effluent Report 3.1.1 during 2010, there are no effluents from this facility.

There were twelve SFSCs loaded in 2008 that are considered Operable (i.e. no measurable leakage)but nonconforming based on the vendor failing to leak test the canisters during fabrication.

This was communicated to the NRC via Energy Northwest letter, G02-10-157, submitted October 27, 2010.Incidents of effluent monitor inoperability greater than 30 days: During 2010, the low range reactor building effluent monitor failed on high temperature.

Following repair, it was noted that the temperature cycling damaged the semiconductor detector.

A spare detector was installed, but the spare detector would not pass calibration.

Following expedited repair of the initially removed detector and installation of a new cryostat, the detector would not cool down to operating temperature.

The detector and cryostat were returned to the vendor for repair. Prior to returning to service, failure of a transformer (E-TR-7BC) resulted in extended out of service time. The monitor was out of service from 2/12/10 to 5/7/10 (about 84 days).Gaseous Effluent Tables Table 3-0 10 CFR Part 50 Appendix I Dose Compliance Report Period: January -- December 2010 I 1st Quarter 12nd Quarter 3rd Quarter I4th Quarter I Year*Noble Gas Gamma Air Dose (mrad) 1.28E-02 1. 16E-02 1.65E-02 1. 15E-02 5.15E-02 ODCM Limit 5 5 5 5 10% of Limit 2.56E-01 2.32E-01 3.30E-01 2.30E-01 5.15E-01 Beta Air Dose (mrad) 4.52E-03 4.09E-03 5.82E-03 4.04E-03 1.82E-02 ODCM Limit 10 10 10 10 20% of Limit 4.52E-02 4.09E-02 5.82E-02 4.04E-02 9.1OE-02 Iodine-131, Iodine-133, Tritium, and Particulates with half-lives greater than eight days.Organ Dose (mrem) 1.40E-02 1. 25E-02 1.77E-02 1.25E-02 5.57E-02 ODCM Limit 7.5 7.5 7.5 7.5 15% of Limit 1.86E-01 1.67E-01 2.37E-01 1.66E-01 3.71E-01* 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, meteorological data (quarterly joint frequency distribution (JFD) tables vs. annual JFD tables), receptor age, target organ, and characteristics of the emitted radionuclides.

In the above chart, all dose is calculated to a hypothetical person at the site boundary.Columbia Generating Station 4 2010 Radioactive Effluent Report Table 3-1 Main Plant Vent Releases Fission Gases and lodines Report Period: January -- December 2010 Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) (Ci) (Ci) (Ci) (Ci)A. Fission gases krypton-85

<MDA <MDA <MDA <MDA <MDA krypton-85m

<MDA 1.51E-01 <MDA <MDA 1.51E-01 krypton-87

<MDA <MDA <MDA <MDA <MDA krypton-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 Others argon-41 3.86E+O1 4.97E+01 4.27E+O1 3.89E+O1 1.70E+02 Total for period

<MDA <MDA <MDA <MDA <MDA iodine-132

<MDA <MDA <MDA <MDA <MDA iodine-133

<MDA <MDA 1.11E-05 <MDA 1.11E-05 iodine-134

<MDA <MDA <MDA <MDA <MDA iodine-135

<MDA <MDA <MDA <MDA <MDA Total for period

  • 0.OOE+00 0.OOE+00 1.11 E-05 0.OOE+00 1.1IE-05 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 5 2010 Radioactive Effluent Report Table 3-1 Main Plant Vent Releases (Continued)

Particulates and Tritium Report Period: January--

December 2010 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) (Ci) (Ci) (Ci) (0i)C. Particulates strontium-89 8.87E-07 7.73E-07 7.95E-07 6.50E-07 3.1 1E-06 strontium-90

<MDA <MDA <MDA <MDA <MDA cesium-134

<MDA <MDA <MDA <MDA <MDA cesium-137

<MDA <MDA <MDA <MDA <MDA barium-lanthanum-140 <MDA <MDA <MDA <MDA <MDA silver- I10m <MDA <MDA <MDA <MDA <MDA cerium- 141 <MDA <MDA <MDA <MDA <MDA cerium- 144 <MDA <MDA <MDA <MDA <MDA cobalt-58

<MDA <MDA <MDA <MDA <MDA cobalt-60 2.11E-05 4.38E-06 <MDA 2.31E-06 2.78E-05 iron-59 <MDA <MDA <MDA <MDA <NMDA manganese-54

<MDA <MDA <MDA <MDA <MDA zinc-65 3.32E-06 2.60E-06 <MDA <MDA 5.91E-06 chrome-51

<MDA <MDA <MDA <MDA <MDA antimony-125 <MDA <MDA <MDA <MDA <MDA Total for period* 2.54E-05 7.75E-06 7.95E-07 2.96E-06 3.69E-05 Others with T 1/2 < 8 days arsenic-76

<MDA <MDA <MDA <MDA <MDA bromine-82

<MDA <MDA <MDA <MDA <MDA copper-64

<MDA <MDA <MDA <MDA <MDA molybdenum-99

<MDA <MDA <MDA <MDA <MDA rhenium- 188 <MDA <MDA <MDA <MDA <NMDA sodium-24

<MDA <MDA <MDA <MDA <MDA technetium-99m

<MDA <MDA <MDA <MDA <MDA zinc-69m <MDA <MDA <MDA <MDA <MDA Total with T 1/2 < 8 days* 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 D. Tritium tritium 8.64E-01 I 1.26E+00 1 1.16E+00 7.91E-01 I 4.08E+00 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 6 2010 Radioactive Effluent Report Table 3-2 Turbine Building Releases Fission Gases and Iodines Report Period: January -- December 2010[ 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) PC) (Ci) (Ci) (Ci)A. Fission gases krypton-85

<MDA <MDA <MDA <MDA <MDA krypton-85m

<MDA <MDA <MDA <MDA <MDA krypton-87

<MDA <MDA <MDA <MDA <MDA krypton-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 Others argon-41 3.32E+00 <MDA 1.29E+01 <MDA 1.62E+01 Total for period

  • 3.32E+00 O.OOE+00 1.29E+01 0.OOE+00 1.62E+01 B. Iodines iodine-131 2.87E-06 3.32E-05 2.86E-05 8.23E-05 1.47E-04 iodine-132

<MDA <MDA <MDA <MDA <MDA iodine-133

<MDA 2.23E-04 1.89E-04 4.07E-04 8.18E-04 iodine-134

<MDA <MDA <MDA <MDA <MDA iodine-135

<MDA <MDA <MDA <MDA <MDA Total for period

  • 2.87E-06 2.56E-04 2.17E-04 4.89E-04 9.65E-04 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 7 2010 Radioactive Effluent Report Table 3-2 Turbine Building Releases (Continued)

Particulates and Tritium Report Period: January -- December 2010 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) (Ci) (Ci) (Ci) (Ci)C. Particulates strontium-89 1.44E-05 1.71E-05 2.26E-05 2.48E-05 7.89E-05 strontium-90

<MDA <MDA <MDA <MDA <MDA cesium-134

<MDA <MDA <MDA <MDA <MDA cesium-137

<MDA <MDA <MDA <MDA <MDA barium-lanthanum-140 <MDA <MDA <MDA <MDA <MDA cerium- 141 <MDA <MDA <MDA <MDA <MDA cerium- 144 <MDA <MDA <MDA <MDA <MDA cobalt-58

<MDA <MDA <MDA <MDA <MDA cobalt-60

<MDA 1.1OE-05 <MDA 4.76E-05 5.85E-05 iron-59 <MDA <MDA <MDA <MDA <MDA manganese-54

<MDA <MDA <MDA <MDA <MDA zinc-65 <MDA <MDA <MDA 2.07E-04 2.07E-04 chrome-51

<MDA <MDA <MDA <MDA <MDA Total for period* 1.44E-05 2.8 1E-05 2.26E-05 2.79E-04 3.44E-04 Others with T 1/2 < 8 days molybdenum-99

<MDA <MDA <MDA <MDA <MDA Total with T 1/2 < 8 days* 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.00E+00 D. Tritium tritium 6.36E+00 I 6.23E+00 I 8.48E+00 I 7.10E+00 I 2.82E+01 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 8 2010 Radioactive Effluent Report Table 3-3 Radwaste Building Releases Fission Gases and lodines A. Fission gases krypton- 85 <MDA <MDA <MDA <MDA <MDA krypton- 85m <MDA <MDA <MDA <MDA <MDA krypton-87

<MDA <MDA <MDA <MDA <MDA krypton- 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 Others argon-41 <MDA <MDA <MDA <MDA <MDA Total for period

  • O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 B. lodines iodine-131

<MDA <MDA <MDA <MDA <MDA iodine-132

<MDA <MDA <MDA <MDA <MDA iodine-133

<MDA <MDA <MDA <MDA <MDA iodine-134

<MDA <MDA <MDA <MDA <MDA iodine-135

<MDA <MDA <MDA <MDA <MDA Total for period* O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 MDA = Less than mass or volume).the "a posteriori" minimal detectable activity (microcuries per unit* MDA values are not included in the totals.Columbia Generating Station 9 2010 Radioactive Effluent Report Columbia Generating Station 9 2010 Radioactive Effluent Report Table 3-3 Radwaste Building Releases (Continued)

Particulates and Tritium Report Period: January--

December 2010 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Year Nuclides Released (Ci) (Ci) (Ci) (Ci) (Ci)C. Particulates strontium-89 1.35E-07 9.74E-08 2.49E-07 3.36E-07 8.18E-07 strontium-90

<MDA <MDA <MDA <MDA <MDA cesium-134

<MDA <MDA <MDA <MDA <MDA cesium-137

<MDA <MDA <MDA <MDA <MDA barium-lanthanum-140 <MDA <MDA <MDA <MDA <MDA cerium- 141 <MDA <MDA <MDA <MDA <MDA cerium- 144 <MDA <MDA <MDA <MDA <MDA cobalt-58

<MDA <MDA <MDA <MDA <MDA cobalt-60 3.05E-06 <MDA 1.18E-06 <MDA 4.23E-06 iron-59 <MDA <MDA <MDA <MDA <MDA manganese-54 1.84E-06 <MDA <MDA <MDA 1.84E-06 zinc-65 6.87E-07 <MDA 7.07E-07 <MDA 1.39E-06 Total for period* 5.72E-06 9.74E-08 2.13E-06 3.36E-07 8.28E-06 Others with T 1/2 < 8 days molybdenum-99

<MDA <MDA <MDA <MDA <MDA Total with T 1/2 < 8 days* O.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 D. Tritium tritium 1.03E-01 1.34E-01 1.79E-01 1.OOE-01 5.16E-01 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).* MDA values are not included in the totals.Columbia Generating Station 10 2010 Radioactive Effluent Report Columbia Generating Station 10 2010 Radioactive Effluent Report Table 3-4 Summation of Releases Gaseous Effluents Report Period: January -- December 2010 iii I I i St I 1 st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter Year %E rror A. Fission and activation gases Total release (Ci) 4.19E+01 4.99E+01 5.56E+01 3.89E+01 1.86E+02 4.30E+01 Average release rate (pCVs) 5.33E+00 6.34E+00 7.07E+00 4.95E+00 5.93E+00 Percent of ODCM limit (%)I 9.78E-03 8.83E-03 1.26E-02 1.05E-02 9.82E-03 B. lodines Total 1-131 (Ci) 2.87E-06 3.32E-05 2.86E-05 8.23E-05 1.47E-04 4.60E+01 Average release rate (pCVs) 3.65E-07 4.22E-06 a63E-06 1.05E-05 4.67E-06 Percent of ODCM limit (%) 1.1 7E-07 1.26E-06 1.43E-06 3.13E-06 1.45E-06 C. Particulates Particulates with half-lives

>8 days (Ci) 4.55E-05 3.59E-05 2-55E-05 2.83E-04 3.90E-04 Average release rate (pCVs) 5.79E-06 4.57E-06 325E-06 3.60E-05 1.24E-05 Percent of ODCM limit (%) 3.44E-06 5.15E-07 6.57E-07 1.63E-06 1.37E-06 Gross alpha radioactivity (Ci) 9.44E-07 4.81 E-07 5.37E-07 1.37E-06 3.33E-06 7.30E+01 D. Tritium_Total release_(Ci) 7.33E+00 7.62E+00 9.82E+00 8.OOE+00 3.28E+01 2.60E+01 Average release rate (Cs)j 9.32E-01 9.70E-01 1.25E+00 1.02E+00 1.04E+00 Percent of ODCM limit (%) 5.41E-05 3.17E-05 299E-05 1.90E-05 2.04E-05 MDA = Less than the "a posteriori" minimal detectable activity (microcuries per unit mass or volume).ODCM release rate limits are based on dose rate. 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 1-131, particulates, and tritium the dose rate limit is less than or equal to 1500 mrem/year to any organ.The ODCM dose factors and the highest site boundary dispersion value for each period were used in the calculation.

  • Measurement errors are sample-specific.

The values reported represent an approximate overall error. The major contributors of this error are measurements associated with sample volume, release point flow rates, and estimates of plateout factors.Columbia Generating Station 11 2010 Radioactive Effluent Report Table 3-5 Gaseous Purges and Vents Report Period: January -- December 2010 Total Maximum Minimum Mean Type Number Time (hr.) Time (hr.) Time (hr.) Time (hr.)Purge 0.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Vent 2.60E+01 2.97E+01 1.75E+00 4.83E-0l1

1. 14E+00 Columbia Generating Station is a continuous release plant. All purges and vents are discharged through the Standby Gas Treatment System and released through the reactor building stack which is sampled and continuously monitored for radioactive gaseous waste.Columbia Generating Station 12 2010 Radioactive Effluent Report Table 3-6 Lower Limits of Detection Gaseous Effluents Report Period: January -- December 2010 Fission Gases Required LLDt Achieved Analysis Nuclide (pCi/cc) LLD (pCi/cc)krypton-87 1.OOE-04 1.05E-08 krypton-88 1.OOE-04 1.29E-08 xenon-133 1.OOE-04 1.OOE-08 xenon-133m 1.00E-04 3.25E-08 xenon-135 1.OOE-04 3.77E-09 xenon-138 1.OOE-04 4.48E-08 Iodines iodine-131 OOE-12 6.04E-14 iodine-133 1.OOE-10 1.28E-12 Particulates strontium-89 1.OOE- 11 1.16E-14 strontium-90 1.OOE-11 5.12E-15 cesium-134 1.OOE-11 5.11E-14 cesium-137 1.OOE-11 4.70E-14 molybdenum-99 1.OOE-1 1 9.12E-13 cerium-141 1.OOE- 11 4.88E-14 cerium-144 1.OOE-11 1.97E-13 cobalt-5 8 1.OOE-1 1 4.44E-14 cobalt-60 1.OOE-11 7.86E-14 iron-59 1.OOE-11 1.07E-13 manganese-54 1.OOE-1 1 4.5 6E-14 zinc-65 1.OOE-11 1.01E-13 Gross Alpha 1.OOE-11 9.01E-16 Tritium hydrogen-3 1.00E-06 5.85E-11 t From ODCM Table 6.2.2.1-1 Columbia Generating Station 13 2010 Radioactive Effluent Report Columbia Generating Station 13 2010 Radioactive Effluent Report 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 1.21-1974.

Solid Radwaste Information required by the Offsite Dose Calculation Manual January -- December 2010 Class A 1. Container Volumes 10 GAL DRUM 2.0 ft3 30 GAL DRUM 4.0 ft3 55 GAL DRUM 7.5 ft3 B-25 Steel Box 96 ft3 PL8-120 Polyethylene HIC 120.3 ft3 EL-142 Polyethylene HIC 132.4 ft3 ES-190 Steel Liner 138 ft3 Control Rod Guide Tube 19.2 ft3 2. Total Curies 1.04E+03 Ci 3. Princi al Radionuclides N di-Co-60 4.12E+02 3.97E+01 Zn-65 3.56E+02 3.44E+01 Fe-55 1.78E+02 1.72E+01 Mn-54 4.04E+01 3.90E +00 Co-58 3.23E+01 3.11E+00 Ni-63 1.30E+01 1.25E+00 C-14 1.70E+00 1.64E-01 Ag-110m 1.43E1+00 1.38E-01 Cs-137 6.85E-01 6.61E-02 Cr-51 6.29E-01 6.07E-02 Sr-89 3.03E-01 2.92E-02 H-3 2.30E-01 2.22E-02 Fe-59 1.90E-01 1.83E-02 Columbia Generating Station 14 2010 Radioactive Effluent Report Columbia Generating Station 14 2010 Radioactive Effluent Report Nb-95 1.75E-01 1.68E-02 Ni-59 1.36E-01 1.32E-02 La-140 1.23E-01 1.19E-02 Ba-140 1.11E-01 1.07E-02 1-131 3.76E-02 3.63E-03 Sr-90 2.34E-02 2.26E-03 Pu-231 1.65E-02 1.59E-03 Zr-95 5.11E-03 4.93E-04 Sb-125 4.14E-03 4.OOE-04 Ce- 141 2.19E-03 2.11E-04 4. Source Resins 1.04E+03 Ci DAW 4.79E-01 Ci Irradiated Components 7.50E-01 Ci Other (Sealed Source & Mixed Waste) 1.67E-04 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 2010 Class C 1. Container Volumes TN-RAM Liner PL8-120 Polyethylene HIC L8-120 Steel Liner 2. Total Curies 3.95E+04 Ci 57.8 ft3 120.3 ft3 125.2 ft3 Columbia Generating Station 15 2010 Radioactive Effluent Report Columbia Generating Station 15 2010 Radioactive Effluent Report 3 Pincial Radionuclid e Co-60 2.39E + 04 6.06E + 01 Fe-55 1.26E+04 3.18E+01 Ni-63 2.80E+03 7.09E+00 Mn-54 1.29E+02 3.27E-01 Ta-182 2.08E+01 5.27E-02 Ni-59 1.57E+01 3.97E-02 Cr-51 1.50E+01 3.81E-02 Zn-65 1.32E+01 3.34E-02 Co-58 7.47E+00 1.89E-02 H-3 4.99E+00 1.26E-02 C-14 4.OOE+00 1.01E-02 Cs-137 9.92E-01 2.51E-03 Zr-95 4.70E-01 1. 19E-03 Sb-125 4.69E-01 1. 19E-03 Nb-95 2.60E-01 6.95E-04 Ag-110m 1.85E-01 4.69E-04 Sr-89 1.81E-01 4.58E-04 Sb-124 1.57E-01 3.98E-04 Nb-94 8.11E-02 2.05E-04 Tc-99 2.251E-02 5.7 1E-05 4. Source Resins DAW 0.OOE+00 Ci 0.00E+00 Ci 3.95E+04 Ci 0.OOE+00 Ci Irradiated Components Other (Sealed Source & Mixed Waste)5. Type of Container All containers shipped as Type B (including casks).6. Solidification Agent None Columbia Generating Station 16 2010 Radioactive Effluent Report.Columbia Generating Station 16 2010 Radioactive Effluent Report Solid Radwaste Information Recommended by NRC Regulatory Guide 1.21 January -- December 2010 Solid waste shipped offsite for burial or disposal (not irradiated fuel).1. Type of Waste Annual Est. Total Waste Stream Unit Cumulative Error %a. Spent resins, filter sludge, m 3 2.29E+02 evaporator bottoms, etc. Ci 1.04E+03 2.5E+01%b. Dry Active Waste m 3 8.16E+01 Ci 4.79E-01 2.5E+01%c. Irradiated Components m 3 1.73E+01 Ci 3.95E+04 2.5E+01%d. Other Waste (Sealed Source & m 3 6.12E+00 mixed waste) Ci 1.67E-04 2.5E+01%2. Estimate of major nuclide composition (by type of waste)a.Dewaterea Spent Resins -- All Classes Nuclie Cuies Prcen Co-60 4.11E+02 3.97E + 01 Zn-65 3.56E+02 3.43E+01 Fe-55 1.78E+02 1.72E+01 Mn-54 4.04E+01 3.90E+00 Co-58 3.22E+01 3.10E+00 Ni-63 1.28E+01 1.23E+00 C-14 1.70E+00 1.64E-01 Ag-110m 1.43E+00 1.38E-01 Cs-137 6.59E-01 6.55E-02 Cr-51 5.34E-01 5.15E-01 Sr-89 3.02E-01 2.92E-02 H-3 2.29E-01 2.21E-02 Fe-59 1.90E-01 1.83E-02 Nb-95 1.70E-01 1.64E-02 Ni-59 1.35E-01 1.30E-02 La-140 1.23E-01 1.18E-02 Ba-140 1.11E-01 1.07E-02 1-131 3.76E-02 3.62E-03 Columbia Generating Station 17 2010 Radioactive Effluent Report Columbia Generating Station 17 2010 Radioactive Effluent Report
b. Dry Active Waste (DAW) -- All Classes Ncide CuisPecn Co-60 1.53E-01 3.19E+01 Zn-65 1.24E-01 2.60E+01 Cr-51 9.54E-02 1.99E+01 Co-58 6.02E-02 1.26E+01 Mn-54 1.35E-02 2.82E+00 Fe-55 7.52E-03 1.57E+00 Cs-137 6.13E-03 1.28E+00 Nb-95 4.59E-03 9.57E-01 Zr-95 3.61E-03 7.54E-01 Sb-125 3.36E-03 7.01E-01 Ni-63 2.80E-03 5.83E-01 Ag-110m 1.79E-03 3.73E-01 Sb-124 1.17E-03 2.45E-01 Sr-89 1.11E-03 2.31E-01 H-3 4.62E-04 9.55E-02 C-14 7.31E-05 1.53E-02 Sr-90 2.94E-05 6.13E-03 Pu-239 2.94E-05 3.21E-04.Irradiated Cornonents Co-60 2.39E+04 6.06E +0 1 Fe-55 1.26E+04 3.18E+01 Ni-63 2.80E + 03 7.09E + 00 Mn-54 1.29E+02 3.27E-01 Ta-182 2.08E+01 5.27E-02 Ni-59 1.57E+01 3.97E-02 Cr-51 1.50E+01 3.81E-02 Zn-65 1.32E+01 3.34E-02 Co-58 7.47E + 00 1.89E-02 H-3 4.99E+00 1.26E-02 C.Columbia Generating Station 18 2010 Radioactive Effluent Report Columbia Generating Station 18 2010 Radioactive Effluent Report C-14 4.OOE+00 1.01E-02 Cs-137 9.92E-01 2.51E-03 Zr-95 4.70E-01 1. 19E-03 Sb-125 4.69E-01 1.19E-03 Nb-95 2.60E-01 6.59E-04 Ag-110m 1.85E-01 4.69E-04 Sr-89 1.81E-01 4.58E-04 Sb-124 1.57E-01 3.98E-04 Other Waste (Sealed Source & Mixed Waste)Co-60 9.34E-05 5.59E+01 Fe-55 6.69E-05 4.01E+01 Mn-54 5.52E-06 3.30E+00 Sb-125 4.71E-07 2.82E-01 Cs-137 4.12E-07 2.47E-01 Ag-110m 1.52E-07 9.08E-02 Co-58 1.41E-07 8.44E-02 d.3. Solid Waste Disposition Number of Shipments 32 Mode of Transportation Tractor -Trailer via Public Highway Tractor -Trailer via Public Highway Destination US Ecology, Inc.P.O. Box 638 Hanford Reservation Richland, WA. 99352 Perma-Fix Northwest 2025 Battelle Boulevard Richland, WA 99352 3*(* After processing, portions of this shipment may be forwarded for disposal.)

Irradiated Fuel Shipments (Disposition)

Number of Shipments Mode of Transportation None N/A Destination N/A Columbia Generating Station 19 2010 Radioactive Effluent Report Columbia Generating Station 19 2010 Radioactive Effluent Report 5.0 Meteorological Data The meteorological data contained in Tables 5-1 through 5-10 was obtained from the meteorological tower located 2500 feet (762 m) west of Columbia Generating Station. Data was recovered from instruments at the 33-foot (10 meter) and 245- foot (75 meter) levels.The meteorological data is a composite file generated from the automated data recovery systems for the calendar year 2010. Data is archived on the Energy Northwest Local Area Network.Meteorological data recovery for 2010 was 95.7% from the 33-foot level and 96.9% from the 245-foot level. Redundant wind and temperature sensors are installed at both levels of the meteorological tower. Data from the two systems is mixed to permit maximum data recovery for defined date ranges.The data in Tables 5-1 through 5-8 lists the joint frequency distributions at the 33- foot and 245-foot levels by quarter for 2010. 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. Table 5-9 and 5-10 list the annual joint frequency distributions for those levels for 2010.Wind speed is measured in miles per hour in the following tables and speeds below 1.0 MPH were recorded as calms.Atmospheric factors which affect dispersion and deposition of gaseous effluents as measured or documented at the Hanford Meteorological Station during 2010 were snow (15.9 inches total which fell in November and December), total precipitation (10.19 inches), dust or blowing dust (1 day), fog (49 days), thunderstorms (7 days), and atmospheric smoke (1 day).Rainfall as recorded at the Columbia Generating Station meteorological tower was 6.65 inches.Columbia Generating Station 20 2010 Radioactive Effluent Report Joint Frequency Distribution Tables for 2010 Table 5-1 1st Quarter Average, 33 Ft Above Ground Level AGL Hours at each wind speed and direction during time period Elevation:

33 Start Date: 111/2010 Total number of Periods: 2159 Period: 1st Quarter Stop Date: 3/31/2010 Periods of No Data Recovery:

9 System Percent Data Recovery:

99.6Y 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13A 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 rTOTALS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2.2 4.5 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 6.7 8.9 3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 5 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 4 2 0 0 0 0 0 0 0 0 0 1 0 1 1 4 13 Stability Class: C Wind Speed Min Max N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTALI 1.0 2.2 3 1 1 0 0 0 0 0 0 0 0 0 0 0 2 1 8 2.2 4.5 8 2 1 0 0 0 0 0 0 0 0 0 0 0 0 14 25 4.5 6.7 7 4 0 0 0 0 0 0 0 0 0 2 0 0 2 7 22 6.7 8.9 10 1 0 0 0 0 0 0 1 0 0 1 0 0 0 7 20 8.9 11.2 4 3 0 0 0 0 0 0 1 1 2 0 3 2 0 1 17 11.2 13.4 2 0 0 0 0 0 0 0 0 0 2 0 1 3 1 1 10 13.4 17.9 3 0 0 0 0 0 0 0 0 1 4 1 0 2 0 1 12 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 37 11 2 0 0 0 0 0 2 2 8 5 4 7 5 32 115 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 5 9 4 1 4 2 1 5 6 10 1 5 4 3 5 10 75 2.2 4.5 25 17 11 2 0 2 12 15 16 5 7 5 6 1 13 29 166 4.5 6.7 13 18 8 1 0 1 1 19 8 5 2 2 5 4 10 34 131 6.7 8.9 4 4 0 0 0 0 5 11 9 8 4 1 1 3 30 23 103 8.9 11.2 0 5 0 0 0 0 1 3 4 5 2 1 1 3 19 8 52 11.2 13.4 2 1 2 0 0 0 1 2 1 4 3 0 3 3 3 0 25 13.4 17.9 1 0 0 0 0 0 1 0 1 4 6 5 1 0 2 1 22 17.9 22.4 0 0 0 0 0 0 0 2 2 6 7 1 2 0 1 0 21 22.4 29.1 0 0 0 0 0 0 0 0 0 2 1 2 0 0 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 50 54 25 4 4 5 22 57 47 49 33 22 23 17 83 105 600 Columbia Generating Station 21 2010 Radioactive Effluent Report Columbia Generating Station 21 2010 Radioactive Effluent Report 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 3 4 2 1 3 0 5 4 7 13 4 4 6 4 6 13 79 2.2 4.5 16 13 6 3 1 4 6 6 20 17 2 7 3 8 26 24 162 4.5 6.7 14 7 9 5 0 2 2 13 9 1 5 3 4 7 26 25 132 6.7 8.9 2 1 1 0 0 0 4 32 13 5 4 2 0 7 31 10 112 8.9 11.2 0 0 0 0 0 0 3 8 3 7 3 0 2 8 10 5 49 11.2 13.4 0 0 0 0 1 0 3 4 6 7 0 0 0 6 4 2 33 13.4 17.9 0 0 0 0 0 0 0 3 3 9 3 0 0 1 3 0 22 17.9 22.4 0 0 0 0 0 0 0 0 0 2 1 0 1 0 0 0 4 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0=TOTALS 35 25 18 9 5 6 23 70 61 62 22 16 16 41 106 79 594 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 9 7 2 4 1 3 3 8 5 5 8 4 7 5 7 8 86 2.2 4.5 23 15 12 4 1 1 3 12 21 9 5 4 2 9 22 24 167 4.5 6.7 8 2 5 1 0 0 2 12 6 5 4 0 1 6 15 33 100 6.7 8.9 2 0 0 0 0 0 1 16 7 2 2 1 0 2 24 4 61 8.9 11.2 0 0 0 0 0 0 4 12 3 0 0 0 0 4 4 0 27 11.2 13.4 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 3 13.4 17.9 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 3 17.9 22.4 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 3 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 42 24 19 9 2 4 14 62 45 23 19 9 10 26 73 69 450 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 3 3 3 0 1 1 1 1 1 3 0 2 2 3 10 10 44 2.2 4.5 24 11 1 0 0 0 2 7 7 5 4 1 1 5 11 30 109 4.5 6.7 4 1 5 1 0 0 0 11 2 1 0 0 0 2 17 13 57 6.7 8.9 0 0 0 0 0 0 0 4 7 0 0 0 1 2 6 4 24 8.9 11.2 0 0 0 0 0 0 0 8 2 0 0 0 0 1 3 0 14 11.2 13.4 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 13.4 17.9 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 IrOTALS 31 15 9 1 1 1 3 31 21 9 4 3 4 13 47 57 250 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 23 25 12 6 9 6 10 18 19 31 13 15 19 15 30 42 293 2.2 4.5 97 59 31 9 2 7 23 40 64 36 18 17 12 23 72 122 632 4.5 6.7 46 32 27 8 0 3 5 55 25 12 11 7 10 19 70 114 444 6.7 8.9 21 6 1 0 0 0 10 63 37 15 10 5 2 14 92 50 326 8.9 11.2 4 8 0 0 0 0 8 31 13 13 7 1 6 18 36 14 159 11.2 13.4 4 1 2 0 1 0 5 6 9 11 5 0 4 12 9 3 72 13.4 17.9 4 0 0 0 0 0 1 5 6 14 13 6 1 4 5 2 61 17.9 22.4 0 0 0 0 0 0 0 2 3 10 8 3 3 0 1 0 30 22.4 29.1 0 0 0 0 0 0 0 0 0 3 1 2 0 0 0 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 199 131 73 23 12 16 62 220 176 145 86 56 57 105 315 347 2023 Periods of Calm while in Stability Glass: A B C D E F G Total 0 0 1 30 46 35 13 127 Columbia Generating Station 22 2010 Radioactive Effluent Report Columbia Generating Station 22 2010 Radioactive Effluent Report Table 5-2 1st Quarter Average, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:

245 Start Date: 1/1/2010 Total number of Periods: 2159 Period: 1st Quarter Stop Date: 3/31/2010 Periods of No Data Recovery:

9 System Percent Data Recovery:

99.6%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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2.2 4.5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 4.5 6.7 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 6.7 8.9 1 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 3 8.9 11.2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 5 0 1 0 0 0 0 0 0 0 1 0 0 1 2 3 13 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 1 0 1 0 0 0 0 0 0 0 0 0 0 0 2 1 5 2.2 4.5 9 3 0 0 0 0 0 0 0 0 0 0 0 0 0 9 21 4.5 6.7 3 2 0 0 0 0 0 0 0 0 0 0 0 0 1 10 16 6.7 8.9 10 2 0 0 0 0 0 0 0 0 0 0 2 1 0 7 22 8.9 11.2 6 2 0 0 0 0 0 0 0 1 0 1 0 1 0 3 14 11.2 13.4 4 1 0 0 0 0 0 0 1 1 2 0 4 0 0 1 14 13.4 17.9 4 0 0 0 0 0 0 0 0 0 2 0 1 4 0 2 13 17.9 22.4 0 0 0 0 0 0 0 0 0 1 5 0 0 2 0 0 8 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 37 10 1 0 0 0 0 0 1 3 9 2 7 8 3 33 114 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 3 6 1 2 5 1 3 2 7 5 1 3 0 4 3 5 51 2.2 4.5 16 12 9 4 1 1 5 12 13 6 9 6 6 3 12 19 134 4.5 6.7 10 10 8 0 0 2 10 16 9 4 3 2 1 3 10 29 117 6.7 8.9 9 11 4 1 0 0 1 9 5 6 2 0 3 2 15 23 91 8.9 11.2 1 4 1 0 0 0 2 6 6 7 2 2 2 3 18 14 68 11.2 13.4 0 4 0 0 0 0 0 4 4 2 2 0 1 6 17 5 45 13.4 17.9 4 1 2 0 0 0 1 2 3 8 6 2 1 10 11 2 53 17.9 22.4 0 0 0 0 0 0 2 0 0 1 4 4 1 1 2 0 15 22.4 29.1 0 0 0 0 0 0 0 2 2 8 10 2 1 1 0 0 26 29.1 40.3 0 0 0 0 0 0 0 0 0 3 2 2 2 0 0 0 9 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 43 48 25 7 6 4 24 53 49 50 41 23 18 33 88 97 609 Columbia Generating Station 23 2010 Radioactive Effluent Report Columbia Generating Station 23 2010 Radioactive Effluent Report Table 5-2 1st Quarter Average, 245 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 5 3 4 3 0 2 2 6 2 6 3 2 1 2 3 1 45 2.2 4.5 6 4 6 3 4 4 6 8 11 4 3 2 5 2 7 10 85 4.5 6.7 6 4 8 4 4 2 8 7 7 4 2 2 3 4 13 19 97 6.7 8.9 3 4 2 2 0 1 1 8 4 2 3 0 1 3 18 16 68 8.9 11.2 4 5 3 2 0 0 3 7 12 3 2 2 3 7 21 14 88 11.2 13.4 1 0 2 0 0 0 2 11 14 3 5 2 1 7 30 10 88 13.4 17.9 2 0 0 0 0 1 3 10 6 11 6 0 2 14 18 8 81 17.9 22.4 0 0 0 0 1 0 2 3 4 6 8 0 0 12 7 4 47 22.4 29.1 0 0 0 0 0 0 0 3 0 5 3 1 0 5 0 0 17 29.1 40.3 0 0 0 0 0 0 0 0 0 4 1 0 0 0 0 0 5 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 27 20 25 14 9 10 27 63 60 48 36 11 16 56 117 82 621 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 3 4 1 1 2 1 1 1 0 0 1 3 0 2 0 21 2.2 4.5 6 3 8 10 6 4 4 9 10 6 7 4 0 4 3 10 94 4.5 6.7 8 8 5 4 0 0 3 10 8 7 3 1 3 6 6 14 86 6.7 8.9 5 3 10 5 0 0 2 13 4 3 5 3 1 3 14 14 85 8.9 11.2 6 1 3 0 0 0 3 3 5 3 2 1 1 2 14 13 57 11.2 13.4 0 3 1 0 0 0 5 3 10 3 1 0 1 3 10 6 46 13.4 17.9 1 0 0 0 0 0 0 11 3 4 0 0 1 14 17 11 62 17.9 22-4 0 0 0 0 0 0 0 2 2 0 0 0 0 9 3 1 17 22.4 29.1 0 0 0 0 0 0 0 1 0 1 0 0 0 2 0 0 4 29.1 40.3 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 27 21 31 20 7 6 18 53 43 29 19 10 10 43 69 69 475 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 1 1 0 2 1 2 0 0 3 2 5 0 3 1 1 2 24 2.2 4.5 6 6 4 3 0 4 4 3 6 1 0 2 2 2 4 6 53 4.5 6.7 15 9 3 1 0 0 1 2 2 1 1 0 1 1 1 6 44 6.7 8.9 6 4 3 0 0 0 0 8 4 4 1 0 0 0 4 14 48 8.9 11.2 4 0 2 0 0 0 1 2 3 1 0 0 0 0 11 10 34 11.2 13.4 2 0 0 0 0 0 1 5 3 0 0 0 0 1 7 5 24 13.4 17.9 0 0 0 0 0 0 2 4 1 3 0 0 0 3 10 6 29 17.9 22.4 0 0 0 0 0 0 0 2 0 1 0 0 0 0 0 2 5 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 34 20 12 6 1 6 9 26 22 13 7 2 6 8 38 51 261 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 11 13 2.2 4.5 44 28 4.5 6.7 44 33 6.7 8.9 34 24 8.9 11.2 22 12 11.2 13.4 7 8 13.4 17.9 11 1 17.9 22.4 0 0 22.4 29.1 0 0 29.1 40.3 0 0 40.3 90.0 0 0 11 27 24 19 9 3 2 0 0 0 o 8 20 9 8 2 0 0 0 0 0 a 7 11 4 0 0 0 0 1 0 0 0 7 13 4 1 0 0 1 0 0 0 A 6 19 22 4 9 8 6 4 0 0 0 9 13 13 9 6 7 7 11 9 147 32 40 17 19 14 13 11 26 55 389 35 26 16 9 5 8 14 31 79 363 38 17 15 11 3 7 9 53 74 317 18 26 15 6 6 6 13 64 56 264 23 32 9 10 2 7 17 64 27 217 27 13 26 14 2 5 45 56 29 238 7 6 9 17 4 1 25 12 7 93 6 2 14 14 4 1 8 0 0 49 0 0 9 4 2 2 0 0 0 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 173 119 95 47 23 26 78 195 175 143 113 48 57 149 317 336 2094 Periods of Calm while in Stability Class: I A B C D E F G TotalI 0 0 2 21 19 10 4 561 Columbia Generating Station 24 2010 Radioactive Effluent Report Columbia Generating Station 24 2010 Radioactive Effluent Report Table 5-3 2nd Quarter Average, 33 Ft AGL Hours at each wind speed and direction during time period Elevation:

33 Start Date: 4/1/2010 Total number of Periods: 2184 Period: 2nd Quarter Stop Date: 6/30=2010 Periods of No Data Recovery:

341 System Percent Data Recovery:

8"44%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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11o 13.4 0 0 0 0 0 0 0 0 2 0 0 0 0 0 1 0 3 13.4 17.9 0 0 0 0 0 0 0 0 2 0 3 0 0 0 0 1 6 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 4 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 0 5 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 0 0 0 0 0 0 0 0 4 0 3 3 2 4 1 2 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 3 6.7 8.9 4 1 0 0 0 0 0 0 2 0 1 0 0 0 0 3 11 8.9 11.2 1 1 1 0 0 0 0 0 2 1 0 0 0 0 0 1 7 11.2 13.4 0 0 0 0 0 0 0 0 6 2 0 0 0 0 0 0 8 13.4 17.9 2 2 0 0 0 0 1 0 0 5 4 0 0 1 0 2 17 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 3 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 8 5 1 0 0 0 1 0 11 10 5 3 0 1 0 6 51 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 1 2 1 0 0 2 0 0 0 0 0 0 0 0 0 2 8 2.2 4.5 1 0 2 0 0 0 1 3 2 0 1 0 0 1 3 3 17 4.5 6.7 6 5 3 1 1 0 2 7 5 0 3 3 3 0 3 6 48 6.7 8.9 3 6 0 0 1 2 3 8 5 4 1 2 3 1 3 4 46 8.9 11.2 1 2 3 1 1 0 0 3 14 8 2 3 1 2 1 1 43 11.2 13.4 1 0 1 0 0 0 0 1 13 8 3 3 2 1 1 1 35 13.4 17.9 0 1 0 0 0 0. 1 0 6 5 5 1 2 1 2 0 24 17.9 22.4 0 0 0 0 0 0 0 0 0 1 4 2 0 1 1 0 9 22.4 29.1 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 0 4 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 13 16 10 2 3 4 7 22 45 27 20 14 13 10 14 17 237 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 0 3 6 4 3 0 4 5 1 6 3 3 1 0 2 2 43 2.2 4.5 2 8 13 4 2 4 26 14 11 8 5 9 7 6 3 6 128 4.5 6.7 3 10 9 3 2 6 16 25 11 8 11 11 4 4 2 3 128 6.7 8.9 1 4 6 3 2 4 16 14 11 8 5 7 3 7 6 3 100 8.9 11.2 0 1 2 0 3 1 10 9 18 8 3 4 6 15 9 5 94 11.2 13.4 0 2 0 1 0 1 5 7 9 5 4 7 2 7 0 2 52 13.4 17.9 3 3 2 0 0 1 5 6 9 8 5 6 4 14 2 6 74 17.9 22-4 0 0 0 0 0 0 2 0 0 5 4 3 1 18 6 0 39 22.4 29.1 0 0 0 0 0 0 0 0 1 3 0 1 4 13 2 0 24 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 9 31 38 15 12 17 84 80 71 59 40 51 32 84 32 27 682 Columbia Generating Station 25 2010 Radioactive Effluent Report Columbia Generating Station 25 2010 Radioactive Effluent Report Table 5-3 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 1 2 0 0 0 0 2 0 0 3 1 1 2 2 2 3 19 2.2 4.5 7 5 1 1 0 3 7 8 9 7 5 11 6 7 8 6 91 4.5 6.7 5 4 2 1 0 1 4 10 8 8 6 7 6 7 6 7 82 6.7 8.9 0 1 2 0 0 1 7 13 10 6 5 1 12 10 5 3 76 8.9 11.2 0 1 0 0 0 0 7 1 4 5 7 6 9 15 7 5 67 11.2 13.4 0 2 0 0 0 0 1 2 3 13 2 1 3 11 4 3 45 13.4 17.9 0 0 0 0 0 0 1 1 1 5 5 2 1 22 0 1 39 17.9 224 0 0 0 0 0 0 0 0 3 5 4 5 1 5 0 0 23 22.4 29.1 0 0 0 0 0 0 0 0 1 1 1 1 1 2 0 0 7 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 13 15 5 2 0 5 29 35 39 53 36 35 41 81 32 28 449 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 3 3 3 3 0 0 3 6 3 1 2 1 1 0 2 4 35 2.2 4.5 8 4 2 1 0 2 8 13 13 3 2 0 5 8 8 10 87 4.5 6.7 3 3 1 0 0 0 5 16 15 5 2 1 5 8 7 5 76 6.7 8.9 1 1 0 0 0 0 2 9 9 4 0 1 2 4 3 0 36 8.9 11.2 0 0 0 0 0 0 1 4 0 3 0 0 2 0 1 0 11 11.2 13.4 0 0 0 0 0 0 0 2 1 1 0 0 0 1 0 0 5 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 15 11 6 4 0 2 19 50 41 17 6 3 15 21 21 19 250 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 3 1 2 0 0 0 0 2 3 0 1 1 0 1 1 3 18 2.2 4.5 4 7 3 0 0 0 4 9 3 1 1 0 0 1 2 5 40 4.5 6.7 3 4 2 0 0 0 5 6 1 2 0 0 0 0 2 5 30 6.7 8.9 0 0 0 0 0 0 0 5 3 2 0 0 0 0 1 2 13 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 10 12 7 0 0 0 9 22 10 5 2 1 0 2 6 15 101 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 8 11 12 7 3 2 9 13 7 10 7 6 4 3 7 14 123 2.2 4.5 22 24 21 6 2 9 46 47 38 19 14 20 18 23 24 30 363 4.5 6.7 21 27 17 5 3 7 32 64 41 23 22 22 18 19 20 26 367 6.7 8.9 9 13 8 3 3 7 28 49 40 24 12 11 20 22 18 16 283 8.9 11.2 2 5 6 1 4 1 18 17 38 25 12 13 18 32 18 12 222 11.2 13.4 1 4 1 1 0 1 6 12 34 29 9 11 7 20 6 6 148 13.4 17.9 5 6 2 0 0 1 8 7 18 23 22 9 7 38 4 10 160 17.9 22.4 0 0 0 0 0 0 2 0 3 12 12 10 2 24 7 0 72 22.4 29.1 0 0 0 0 0 0 0 0 2 5 2 4 6 21 2 0 42 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 4 3 1 0 0 9 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 68 90 67 23 15 28 149 209 221 171 112 110 103 203 106 114 1789 Periocs of Calm while in Stability Class: A B C D E F G Total 0 0 0 14 18 12 10 54 Columbia Generating Station 26 2010 Radioactive Effluent Report Table 5-4 2nd Quarter Average, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:

245 Start Date: 4/112010 Total number of Periods: 2184 Period: 2nd Quarter Stop Date: 6/3012010 Periods of No Data Recovery:

214 System Percent Data Recovery:

90.2%Stability Class: A Wind Speed Min Max N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTALI 1.0 2.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 13.4 17.9 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 4 17.9 22.4 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 4 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 4 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 4 0 0 0 5 TOTALS 1 0 0 0 0 0 0 0 2 3 2 1 4 4 1 1 19 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 1 5 0 0 0 0 0 0 1 0 0 0 0 0 0 0 7 8.9 11.2 1 1 1 0 0 0 0 0 1 1 1 0 0 0 0 3 9 11.2 13.4 0 1 1 0 0 0 0 0 1 3 0 0 0 0 0 0 6 13.4 17.9 1 1 0 0 0 0 0 0 3 3 2 0 0 0 1 1 12 17.9 22.4 1 1 0 0 0 0 1 0 0 4 3 2 0 1 0 0 13 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 TOTALS 4 9 2 0 0 0 1 0 6 12 6 5 0 1 1 4 51 1 Stability Class: C Wind Speed Min Max N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTALi 1.0 2.2 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 4 2.2 4.5 1 2 2 0 0 0 2 0 2 0 1 0 0 1 1 1 13 4.5 6.7 5 5 3 2 1 0 0 4 2 1 1 0 0 0 4 4 32 6.7 8.9 3 5 0 0 0 0 1 7 5 1 2 6 2 1 2 4 39 8.9 11.2 1 4 2 1 0 2 2 4 13 4 2 2 2 0 3 2 44 11.2 13.4 0 1 1 0 2 0 0 0 5 11 4 0 2 1 0 1 28 13.4 17.9 1 1 1 0 0 0 0 0 9 19 6 3 6 2 2 2 52 17.9 22.4 0 0 0 0 0 0 1 0 0 5 6 1 2 2 1 0 18 22.4 29.1 0 0 0 0 0 0 0 0 0 1 4 2 0 1 0 0 8 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 0 4 40.3 90.0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 2 TOTALS 12 18 9 3 3 3 6 15 36 43 27 14 16 10 14 15 244 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 1 7 4 3 1 3 1 6 3 2 3 0 1 1 1 38 2.2 4.5 2 5 11 5 3 2 8 18 9 6 7 5 6 7 4 6 104 4.5 6.7 2 3 8 4 0 5 16 23 13 8 8 7 5 2 2 2 108 6.7 8.9 1 9 9 7 2 2 10 13 22 5 7 12 2 4 6 2 113 8.9 11.2 1 2 2 4 2 4 11 5 15 9 10 5 4 5 6 2 87 11.2 13.4 1 0 2 0 2 1 4 3 13 8 5 3 4 10 10 5 71 13.4 17.9 1 1 1 0 2 2 11 12 12 14 10 8 7 11 2 3 97 17.9 22.4 1 3 2 0 0 2 2 2 3 9 4 1 5 10 1 6 51 22.4 29.1 0 0 0 0 0 2 0 0 0 5 3 5 5 15 6 0 41 29.1 40.3 0 0 0 0 0 0 0 0 0 4 5 1 4 19 5 0 38 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 10 24 42 24 14 21 65 77 93 71 61 50 42 84 43 27 748 Columbia Generating Station 27 2010 Radioactive Effluent Report Columbia Generating Station 27 2010 Radioactive Effluent Report Table 5-4 2nd Quarter Average, 245 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 0 0 1 0 1 0 1 0 0 1 1 0 1 0 1 2 9 2.2 4.5 5 2 1 2 1 3 2 1 5 5 2 4 3 8 3 5 52 4.5 6.7 2 2 2 0 0 1 0 7 4 4 4 3 4 4 5 2 44 6.7 8.9 5 4 1 1 0 1 0 7 4 7 3 7 5 10 4 3 62 8.9 11.2 1 0 2 0 0 1 5 2 5 11 2 3 5 5 7 3 52 11.2 13.4 2 0 2 0 1 1 2 1 6 6 6 1 7 11 7 2 55 13.4 17.9 2 1 4 0 0 1 9 3 3 9 9 7 3 16 11 4 82 17.9 22.4 0 0 1 0 0 2 0 0 3 7 9 4 8 29 6 3 72 22.4 29.1 0 0 0 0 0 0 0 0 0 12 5 5 0 28 1 0 51 29.1 40.3 0 0 0 0 0 0 0 0 0 2 3 6 1 6 0 0 18 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 17 9 14 3 3 10 19 21 30 64 44 40 37 117 45 24 497 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 2 1 0 0 0 0 1 0 3 0 3 0 0 1 1 0 12 2.2 4.5 4 6 1 3 0 2 3 8 2 1 5 2 1 3 5 0 46 4.5 6.7 2 6 1 0 0 1 6 2 8 3 7 3 1 3 2 5 50 6.7 8.9 1 5 2 1 0 0 2 2 10 10 0 5 4 1 7 6 56 8.9 11.2 1 2 2 0 0 0 5 5 5 6 2 2 0 5 7 1 43 11.2 13.4 0 0 0 0 0 0 0 3 2 3 0 1 2 3 3 0 17 13.4 17.9 0 0 0 0 0 0 2 1 2 4 2 0 4 12 10 1 38 17.9 22.4 0 0 0 0 0 0 0 0 2 0 1 0 1 6 1 0 11 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 10 20 6 4 0 3 19 21 34 27 20 13 13 35 36 13 274 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 3 0 0 1 0 0 1 2 1 2 2 0 0 0 1 1 14 2.2 4.5 0 0 2 2 0 0 1 2 5 4 1 1 2 1 1 0 22 4.5 6.7 2 1 1 1 0 1 1 2 4 5 1 2 0 0 1 1 23 6.7 8.9 1 3 2 0 0 0 0 3 2 1 1 0 0 1 0 1 15 8.9 11.2 1 1 2 1 0 0 1 1 2 4 1 0 0 0 2 2 18 11.2 13.4 0 0 1 0 0 0 0 0 0 1 1 0 0 0 1 0 4 13.4 17.9 0 0 0 0 0 0 0 1 0 0 0 0 0 1 8 0 10 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 rTOTALS 7 5 8 5 0 1 4 11 14 17 7 3 2 3 14 5 106 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 7 2 8 5 4 2 6 3 10 6 8 3 1 2 5 5 77 2.2 4.5 12 15 17 12 4 7 16 29 23 16 16 12 12 20 14 12 237 4.5 6.7 13 17 15 7 1 8 23 38 31 21 21 15 10 9 14 14 257 6.7 8.9 13 31 14 9 2 3 13 32 44 24 13 30 13 17 19 16 293 8.9 11.2 6 10 11 6 2 7 24 17 41 35 18 12 11 15 25 13 253 11.2 13.4 3 2 7 0 5 2 6 7 28 32 16 5 15 25 21 8 182 13.4 17.9 5 4 6 0 2 3 22 17 30 50 29 18 20 42 35 12 295 17.9 22.4 2 4 3 0 0 4 4 2 8 27 25 8 16 48 9 9 169 22.4 29.1 0 0 0 0 0 2 0 0 0 18 12 12 5 45 7 0 101 29.1 40.3 0 0 0 0 0 0 0 0 0 7 9 9 6 31 5 0 67 40.3 90.0 0 0 0 0 0 0 0 0 0 1 0 2 5 0 0 0 8 TOTALS 61 85 81 39 20 38 114 145 215 237 167 126 114 254 154 89 1939 Perods of Calm while in Stability ass: A B C D E F G Total 0 0 1 12 4 5 9 31 Columbia Generating Station 28 2010 Radioactive Effluent Report Columbia Generating Station 28 2010 Radioactive Effluent Report Table 5-5 3rd Quarter Average, 33 Ft AGL Hours at each wind speed and direction durinc time period Elevation:

33 Start Date: 7/1/2010 Total number of Periods: 2208 Period: 3rd Quarter Stop Date: 9W30/2010 Periods of No Data Recovery:

17 System Percent Data Recovery:

99.20/6 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 6.7 8.9 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 3 5 8.9 11.2 3 1 0 0 0 0 0 2 3 0 0 0 0 0 0 1 10 11.2 13.4 5 4 0 0 0 0 0 0 3 0 0 0 0 0 1 2 15 13.4 17.9 3 0 0 0 0 0 0 0 6 0 0 0 0 0 1 0 10 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 2 2 2 0 7 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 4 2 0 7 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 12 7 0 0 0 0 0 2 12 2 0 0 2 6 7 6 56 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 3 1 0 0 0 0 0 0 0 0 0 1 2 0 0 3 10 4.5 6.7 2 0 0 0 0 0 0 0 1 0 0 0 1 1 0 5 10 6.7 8.9 3 6 0 0 0 0 0 0 0 1 0 0 0 0 1 7 18 8.9 11.2 4 2 1 0 0 0 0 4 8 0 0 0 1 1 0 3 24 11.2 13.4 2 1 0 0 0 0 0 2 4 1 0 0 0 3 3 0 16 13.4 17.9 2 0 0 0 0 0 0 2 3 0 0 2 1 2 0 0 12 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 1 1 0 0 3 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 40.3 90.0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 TOTALS 16 10 1 0 0 0 0 8 16 3 2 3 5 12 4 18 98 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 3 1 1 1 1 0 0 0 0 1 3 1 0 0 1 1 14 2.2 4.5 13 8 11 0 0 1 0 4 7 2 3 2 2 2 5 9 69 4.5 6.7 9 8 5 2 1 2 5 16 19 2 4 2 1 2 3 10 91 6.7 8.9 5 4 1 1 0 0 3 10 9 2 0 0 3 1 2 10 51 8.9 11.2 7 2 1 2 1 0 0 8 12 1 3 2 2 1 0 3 45 11.2 13.4 2 0 0 2 2 2 1 2 5 2 0 1 1 2 0 3 25 13.4 17.9 0 1 0 1 1 0 2 7 5 2 0 1 1 2 2 0 25 17.9 22.4 0 0 0 0 0 0 0 0 0 3 0 0 0 1 1 1 6 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 40.3 90.0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 TOTALS 39 24 19 10 6 5 11 47 57 15 13 9 10 13 15 37 330 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 4 2.2 4.5 4 4.5 6.7 3 6.7 8.9 4 8.9 11.2 1 11.2 13.4 4 13.4 17.9 1 17.9 22.4 0 22.4 29.1 0 29.1 40.3 0 40.3 90.0 0 1 11 8 4 2 0 1 0 0 0 0 11 17 20 11 3 0 0 0 0 0 0 5 10 2 1 8 4 1 8 6 10 21 18 10 4 7 7 11 24 17 14 8 4 2 8 8 13 9 2 7 2 7 11 12 10 2 2 0 3 3 8 7 1 1 0 0. 0 10 6 4 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 4 0 8 4 5 7 2 1 2 2 2 0 1 0 2 0 0 0 0 0 0 0 3 1 0 6 4 2 1 4 2 2 3 5 2 2 3 1 3 2 3 10 9 0 17 6 0 10 2 0 1 2 0 0 0 2 4 4 6 5 2 0 0 0 0 0 57 137 142 84 73 38 46 27 12 3 1 TOTALS 21 27 62 34 27 41 68 88 61 22 26 14 18 55 33 23 620 Columbia Generating Station 29 2010 Radioactive Effluent Report Table 5-5 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 4 1 1 5 2 0 5 1 3 2 1 3 0 6 2 5 41 2.2 4.5 9 3 3 1 0 6 6 9 7 7 4 5 3 5 9 8 85 4.5 6.7 5 1 1 1 0 0 5 9 9 6 3 12 8 8 10 10 88 6.7 8.9 1 2 3 0 0 1 12 11 5 4 2 3 7 16 12 6 85 8.9 11.2 2 0 0 0 0 2 5 11 8 1 0 2 5 14 9 4 63 11.2 13.4 0 0 0 0 0 0 1 4 2 5 0 1 4 14 6 1 38 13.4 17.9 0 0 0 0 0 0 0 0 2 2 1 0 1 22 2 1 31 17.9 22.4 0 0 0 0 0 0 0 0 1 0 0 0 1 2 1 0 5 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 21 7 8 7 2 9 34 45 37 27 11 26 29 87 51 35 436 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 6 6 4 2 1 3 2 4 9 3 0 2 5 1 4 2 54 2.2 4.5 7 8 10 0 0 4 6 20 8 5 1 2 2 9 7 17 106 4.5 6.7 4 7 10 0 0 1 8 22 9 3 3 2 2 5 8 4 88 6.7 8.9 2 2 4 0 0 2 6 21 9 3 0 0 2 6 6 2 65 8.9 11.2 0 1 4 0 0 0 2 9 6 1 0 1 5 3 1 0 33 11.2 13.4 0 0 1 0 0 0 0 1 2 0 0 0 1 2 1 0 8 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 19 24 33 2 1 10 24 77 43 15 4 7 17 26 27 25 354 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 2 6 6 2 0 3 0 3 2 2 1 1 0 1 3 4 36 2.2 4.5 12 27 11 0 1 0 9 8 2 2 0 0 2 1 10 4 89 4.5 6.7 8 2 1 0 0 0 4 17 5 1 2 0 0 0 5 16 61 6.7 8.9 0 1 2 0 0 0 5 19 4 0 0 0 0 2 6 2 41 8.9 11.2 0 0 3 0 0 0 0 3 0 0 0 0 0 0 0 0 6 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 22 36 23 2 1 3 18 50 13 5 3 1 3 4 24 26 234 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 19 15 23 15 14 8 8 16 18 9 9 7 8 9 10 14 202 2.2 4.5 48 58 52 9 7 21 42 59 34 20 16 14 17 21 33 45 496 4.5 6.7 31 27 37 10 8 14 46 81 57 20 17 23 13 20 28 49 481 6.7 8.9 16 20 21 5 2 11 34 74 36 12 4 4 14 28 32 36 349 8.9 11.2 17 8 12 9 3 9 18 49 47 5 5 7 15 21 13 16 254 11.2 13.4 13 5 1 4 2 5 5 17 23 9 2 2 8 24 13 8 141 13.4 17.9 6 2 0 2 1 0 2 19 22 8 2 3 6 36 14 1 124 17.9 22.4 0 0 0 0 0 0 0 1 2 4 2 0 3 23 10 1 46 22.4 29.1 0 0 0 0 0 0 0 0 0 2 1 0 0 18 5 0 26 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3 0 6 40.3 90.0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 3 TOTALS 150 135 146 55 37 68 155 317 239 89 59 60 84 203 161 170 2128 Periods of Calm while in Stability Class: A B C D E F G TotalI 0 0 3 12 13 15 20 63 Columbia Generating Station 30 2010 Radioactive Effluent Report Table 5-6 3rd Quarter Average, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:

245 Start Date: 7/1/2010 Total number of Periods: 2208 Period: 3rd Quarter Stop Date: 9/302010 Periods of No Data Recovery:

17 System Percent Data Recovery:

99.2%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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.5 6.7 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 6.7 8.9 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 8.9 11.2 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 3 5 11.2 13.4 7 2 0 0 0 0 0 0 3 0 0 0 0 0 0 2 14 13.4 17.9 0 3 2 0 0 0 0 0 6 2 0 0 0 0 1 1 15 17.9 22.4 0 2 0 0 0 0 0 0 1 1 0 0 0 0 2 0 6 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 2 2 1 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 0 4 3 0 8 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.OTALS 9 7 2 1 0 0 0 1 10 4 1 0 2 6 7 6 56 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 2 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 5 4.5 6.7 1 1 0 0 0 0 0 0 0 0 0 1 0 1 0 5 9 6.7 8.9 4 3 1 0 0 0 0 0 0 2 0 0 0 0 0 3 13 8.9 11.2 3 3 0 0 0 0 0 2 4 0 0 0 2 0 1 7 22 11.2 13.4 3 3 1 0 0 0 0 0 4 3 0 0 1 1 0 0 16 13.4 17.9 1 2 1 0 0 0 0 1 6 1 1 1 1 2 5 0 22 17.9 22.4 0 0 0 0 0 0 0 0 1 1 0 1 0 0 1 0 4 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 2 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 0 1 2 0 4 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 TTOOTALS 14 12 3 0 1 0 0 3 16 8 2 4 4 7 9 15 98 Stability Class: C Wind Speed Min Max N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTALI 1.0 2.2 3 1 0 0 0 0 0 1 0 2 1 1 0 0 2 0 11 2.2 4.5 9 8 7 3 0 0 0 1 4 2 3 2 0 2 4 8 53 4.5 6.7 1 4 6 5 0 2 1 5 12 8 1 1 3 2 3 5 59 6.7 8.9 7 9 3 2 1 1 4 14 13 6 0 4 3 2 4 11 84 8.9 11.2 5 5 2 2 1 0 0 3 9 2 0 0 1 0 0 3 33 11.2 13.4 3 2 0 0 1 0 0 0 15 4 3 1 2 1 0 4 36 13.4 17.9 0 1 1 2 5 1 3 4 9 7 0 2 1 2 0 0 38 17.9 22.4 0 0 0 0 0 0 0 0 1 1 1 1 1 2 2 0 9 22.4 29.1 0 0 0 0 0 0 0 0 0 2 0 0 0 0 2 1 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 LTOTALS 28 30 19 14 8 4 8 28 63 34 9 12 11 12 19 32 331 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 0 2 4 5 5 7 4 2 3 2 1 2 2 1 1 2 43 2.2 4.5 1 6 14 10 5 6 16 19 7 7 7 4 4 2 3 1 112 4.5 6.7 4 4 14 15 7 9 17 17 12 7 7 5 5 4 1 6 134 6.7 8.9 4 4 8 8 6 6 8 13 15 5 3 6 0 1 2 2 91 8.9 11.2 3 2 1 9 2 3 10 4 6 4 1 2 1 5 2 1 56 11.2 13.4 4 2 1 4 2 5 5 3 11 2 0 2 0 3 2 4 50 13.4 17.9 3 1 1 0 1 2 5 5 17 4 2 1 2 2 5 3 54 17.9 22.4 0 0 1 0 0 0 0 2 5 6 0 0 1 6 7 0 28 22.4 29.1 0 0 0 0 0 0 0 1 1 3 3 1 0 15 12 0 36 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 15 6 0 21 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TUTALS 19 21 44 51 28 38 65 66 77 40 24 23 15 54 41 19 625 Columbia Generating Station 31 2010 Radioactive Effluent Report Columbia Generating Station 31 2010 Radioactive Effluent Report Table 5-6 3rd Quarter Average, 245 Ft AGL (Continued)

Stabll itv 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 3 2 1 2 1 0 0 2 0 0 1 1 0 1 2 1 17 2.2 4.5 2 1 3 0 1 4 5 1 1 1 5 6 2 3 1 1 37 4.5 6.7 4 1 2 0 0 2 4 2 2 2 1 3 3 5 7 2 40 6.7 8.9 4 3 0 1 0 2 2 6 7 4 2 2 5 10 3 11 62 8.9 11.2 3 1 2 2 0 1 4 1 10 8 1 3 10 9 7 3 65 11.2 13.4 2 2 0 1 0 0 2 2 9 3 1 3 7 6 5 2 45 13.4 17.9 3 3 1 0 0 0 0 10 8 11 1 2 5 27 17 6 94 17.9 22.4 0 0 0 0 0 0 0 0 1 6 2 1 3 26 13 1 53 22.4 29.1 0 0 0 0 0 0 0 0 0 3 1 0 1 26 0 0 31 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 21 13 9 6 2 9 17 24 38 38 15 21 36 114 55 27 445 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 0 1 2 1 2 0 2 1 .3 1 1 1 2 1 4 23 2.2 4.5 4 3 4 3 3 2 1 1 9 5 6 3 1 2 6 8 61 4.5 6.7 1 1 1 0 3 1 6 8 8 2 1 1 2 6 2 5 48 6.7 8.9 3 2 3 1 0 0 6 12 8 4 3 3 1 2 4 7 59 8.9 11.2 1 2 1 1 0 1 1 12 4 7 4 2 1 5 6 2 50 11.2 13.4 0 2 1 1 0 1 2 6 5 5 2 1 7 5 12 2 52 13.4 17.9 1 0 1 2 0 0 2 3 5 7 1 0 2 4 8 3 39 17.9 22.4 0 0 3 5 0 0 0 0 2 3 0 0 0 8 3 2 26 22.4 29.1 0 0 2 0 0 0 0 0 0 0 0 0 0 5 0 0 7 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 11 10 17 15 7 7 18 44 42 36 18 11 15 39 42 33 365 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 2 2 1 1 3 0 3 1 2 1 0 1 0 2 0 2 21 2.2 4.5 5 3 4 1 0 2 3 5 5 6 2 3 2 0 1 6 48 4.5 6.7 6 2 0 1 1 3 3 9 11 4 2 2 1 0 3 3 51 6.7 8.9 2 0 0 2 0 0 5 10 8 5 3 0 0 0 2 10 47 8.9 11.2 3 1 1 0 0 0 1 4 2 7 0 0 0 0 3 4 26 11.2 13.4 1 0 0 0 0 0 0 2 1 2 1 0 0 0 4 6 17 13.4 17.9 1 0 0 0 0 0 0 1 1 3 1 0 1 4 11 5 28 17.9 22.4 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 4 22.4 29.1 0 0 2 0 0 0 0 0 0 0 0 0 0 3 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90:0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 20 8 9 6 4 5 15 32 30 28 9 6 4 10 25 36 247 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 4.5 6.7 8.9 11.2 13.4 17.9 22.4 29.1 40.3 2.2 9 7 4.5 23 21 6.7 17 13 8.9 25 21 11.2 19 14 13.4 20 13 17.9 9 10 22.4 0 2 29.1 0 0 40.3 0 0 90.0 0 0 7 10 32 17 23 22 15 14 7 14 3 6 7 4 5 6 4 0 0 0 0 0 10 10 11 7 3 3 6 0 0 0 0 9 14 17 9 5 6 3 0 0 0 0 7 8 6 8 25 27 27 21 31 41 45 23 25 55 51 26 16 27 35 28 9 13 48 19 10 24 52 35 0 2 11 18 0 1 1 10 0 0 0 0 0 0 0 0 4 23 12 11 6 7 6 3 4 2 0 6 19 13 15 7 7 6 3 1 0 0 3 6 6 9 115 9 9 15 24 316 14 18 16 26 342 9 15 15 44 357 15 19 19 23 257 17 16 23 20 230 12 41 47 18 290 5 43 29 3 130 3 52 15 1 92 0 21 13 0 36 0 2 0 0 2 TOTALS 122 101 103 93 50 63 123 198 276 188 78 77 87 242 198 168 2167 Periods of Calm while in Stability Class:lA B C D E F G Total 0 0 2 7 4 4 7 24 Columbia Generating Station 32 2010 Radioactive Effluent Report Table 5-7 4th Quarter Average, 33 Ft AGL Hours at each wind speed and direction during time period Elevation:

33 Start Date: 1011/2010 Total number of Periods: 2208 Period: 4th Quarter Stop Date: 12/3112010 Periods of No Data Recovery:

8 System Percent Data Recovery:

99.6%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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2.2 4.5 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 1 4 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 0 0 0 0 0 0 1 0 0 0 0 0 0 1 2.2 4.5 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 0 1 0 0 0 0 1 0 0 2 0 0 0 0 0 2 6 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 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 2.2 4.5 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 6 8 4.5 6.7 3 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2 6 6.7 8.9 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 3 6 8.9 11.2 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 2 11.2 13.4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 13.4 17.9 0 0 0 0 0 0 0 0 0 4 1 0 0 0 0 5 10 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 5 2 0 0 0 0 1 4 0 5 1 1 1 0 0 18 38 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 3 1 4 3 0 3 4 6 5 6 3 2 4 5 13 8 70 2.2 4.5 11 9 10 3 3 0 5 10 12 7 2 6 5 20 22 19 144 4.5 6.7 11 7 14 2 1 1 6 6 8 4 3 2 4 8 21 10 108 6.7 8.9 3 5 8 0 0 1 8 10 9 4 4 0 4 7 20 7 90 8.9 11.2 5 5 1 0 0 0 3 10 12 2 2 5 0 5 18 26 94 11.2 13.4 7 0 0 0 0 0 2 2 6 5 0 0 1 14 6 5 48 13.4 17.9 0 0 0 0 0 0 1 3 12 24 3 1 0 3 6 13 66 17.9 22.4 0 0 0 0 0 0 1 1 7 6 0 0 4 0 6 2 27 22.4 29.1 0 0 0 0 0 0 0 0 1 10 2 0 0 0 0 0 13 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 40 27 37 8 4 5 30 48 72 68 19 16 22 62 112 90 660.Columbia Generating Station 33 2010 Radioactive Effluent Report Table 5-7 4th Quarter Average, 33 Ft AGL (Continued)

Stability Class: E Wind Speed Min Max N NNE NP ENF F ESE S:F SF A SSW SW WSW W WNW NW NNW TOTAL 1.0 2.2 4 5 4 1 2 3 6 5 6 6 8 4 9 11 8 6 88 2.2 4.5 16 7 8 0 1 1 9 10 15 10 7 7 10 16 34 19 170 4.5 6.7 6 5 4 2 0 2 10 22 18 7 5 2 6 17 34 9 149 6.7 8.9 2 2 1 0 0 3 21 24 13 8 1 1 2 5 33 7 123 8.9 11.2 0 1 1 0 0 1 8 21 14 14 2 2 2 5 7 3 81 11.2 13.4 0 0 0 0 0 0 6 17 13 13 1 0 3 3 5 3 64 13.4 17.9 0 0 0 0 0 0 1 5 10 9 2 0 6 7 0 0 40 17.9 22.4 0 0 0 0 0 0 1 2 4 14 1 0 1 1 0 0 24 22.4 29.1 0 0 0 0 0 0 0 0 1 4 0 0 1 0 0 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 28 20 18 3 3 10 62 106 94 85 28 17 41 65 121 47 748 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 7 3 2 3 0 3 5 6 5 3 5 2 6 3 3 61 2.2 4.5 14 7 1 1 0 0 1 13 6 9 3 2 5 6 19 6 93 4.5 6.7 2 2 3 1 1 0 7 15 18 8 1 1 4 6 25 11 105 6.7 8.9 2 1 1 0 0 0 7 22 10 5 1 1 2 2 13 3 70 8.9 11.2 0 1 0 0 0 0 2 12 3 3 0 0 1 0 2 0 24 11.2 13.4 0 0 0 0 0 0 1 7 2 1 0 0 1 0 0 0 12 13.4 17.9 0 0 0 0 0 0 0 1 1 2 0 0 0 1 0 0 5 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 23 18 8 4 4 0 21 75 46 33 8 9 15 21 62 23 370 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 10 12 1 1 1 0 1 2 6 4 4 0 1 4 3 6 56 2.2 4.5 10 14 9 2 0 0 2 12 13 3 2 4 4 5 10 26 116 4.5 6.7 3 1 1 0 0 0 2 11 5 4 0 1 0 1 4 5 38 6.7 8.9 0 0 1 0 0 0 0 5 3 0 0 0 1 1 5 0 16 8.9 11.2 0 0 0 0 0 0 0 4 0 0 0 0 0 0 3 0 7 11.2 13.4 0 0 2 0 0 0 0 1 0 0 0 0 1 0 0 0 4 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 23 27 14 3 1 0 5 35 27 11 6 5 7 11 25 37 237 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 22 26 13 7 6 6 14 18 23 22 18 11 17 26 27 23 279 2.2 4.5 53 39 28 6 4 1 18 46 46 29 14 19 24 47 85 78 537 4.5 6.7 25 15 22 5 2 3 26 54 49 23 9 6 14 32 84 37 406 6.7 8.9 7 8 11 0 0 4 36 64 35 17 6 2 9 15 71 20 305 8.9 11.2 5 7 2 0 0 1 13 48 29 19 4 8 3 10 30 29 208 11.2 13.4 8 0 2 0 0 0 9 27 21 19 1 0 6 17 11 10 131 13.4 17.9 0 0 0 0 0 0 2 9 23 39 6 1 6 11 6 19 122 17.9 22.4 0 0 0 0 0 0 2 3 11 22 1 0 5 1 6 2 53 22.4 29.1 0 0 0 0 0 0 0 0 2 14 2 0 1 0 0 0 19 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 120 95 78 18 12 15 120 269 239 204 62 48 86 159 320 218 2063 Perods of Calm while In Stability Class: A B C D E F G Total 0 1 0 31 38 35 32 137 Columbia Generating Station 34 2010 Radioactive Effluent Report Columbia Generating Station 34 2010 Radioactive Effluent Report Table 5-8 4th Quarter Average, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:

245 Start Date: 10/1/2010 Total number of Periods: 2208 Period: 4th Quarter Stop Date: 12/31/2010 Periods of No Data Recovery:

32 System Percent Data Recovery:

98.6%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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 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 0 0 0 0 0 0 1 1 0 0 0 0 0 2 2.2 4.5 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 3 4.5 6.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.7 8.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.9 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 1 1 0 0 0 0 1 0 0 2 1 0 0 0 0 1 7 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 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 3 6 4.5 6.7 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 4 6.7 8.9 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 3 6 8.9 11.2 0 0 0 0 0 0 0 3 1 0 0 0 0 0 0 2 6 11.2 13.4 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2 13.4 17.9 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2 4 17.9 22.4 1 0 0 0 0 0 0 0 0 3 2 0 0 0 0 3 9 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 7 3 0 0 0 0 1 3 1 3 3 1 0 0 0 15 37 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 8 3 12 6 0 1 3 3 1 3 2 2 1 3 5 5 58 2.2 4.5 17 5 7 3 3 1 3 14 6 6 6 3 4 7 9 17 111 4.5 6.7 6 6 9 1 1 0 3 6 11 2 1 2 3 7 8 11 77 6.7 8.9 1 3 3 5 0 0 2 6 6 2 4 2 2 3 10 7 56 8.9 11.2 3 4 5 1 0 0 6 9 13 5 0 5 0 4 11 8 74 11.2 13.4 7 3 1 0 0 0 1 2 7 9 3 1 0 5 17 18 74 13.4 17.9 16 0 0 0 0 0 1 5 6 6 3 2 2 8 19 13 81 17.9 22.4 0 0 0 0 0 0 1 0 2 25 4 0 0 9 6 10 57 22.4 29.1 0 0 0 0 0 0 0 1 3 13 6 0 4 1 7 3 38 29.1 40.3 0 0 0 0 0 0 0 0 0 5 8 0 0 0 0 0 13 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 58 24 37 16 4 2 20 46 55 76 37 17 16 47 92 92 639 Columbia Generating Station 35 2010 Radioactive Effluent Report Table 5-8 4th Quarter Average, 245 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 1 3 2 2 2 5 2 2 2 4 3 4 2 5 2 47 2.2 4.5 7 8 7 4 2 9 14 15 4 3 5 5 2 6 11 9 111 4.5 6.7 7 7 5 4 0 1 2 7 12 4 2 0 0 5 11 10 77 6.7 8.9 2 4 2 0 0 2 7 9 9 4 2 1 0 6 15 5 68 8.9 11.2 3 4 3 1 0 3 8 11 13 7 4 1 1 6 17 7 89 11.2 13.4 0 1 2 0 0 0 10 10 11 11 2 0 0 9 25 4 85 13.4 17.9 5 0 2 0 0 0 6 19 21 21 13 1 2 12 29 16 147 17.9 22.4 1 0 0 0 0 0 1 5 13 22 13 1 2 8 5 0 71 22.4 29.1 0 0 0 0 0 0 0 2 4 13 3 0 3 10 0 0 35 29.1 40.3 0 0 0 0 0 0 0 0 0 13 2 0 2 1 0 0 18 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 3 TOTALS 31 25 24 11 4 17 53 80 89 100 50 13 18 65 118 53 751 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 1 1 0 1 4 2 2 1 2 1 1 1 1 2 23 2.2 4.5 6 4 3 2 1 3 5 4 7 5 4 4 3 6 3 9 69 4.5 6.7 9 4 5 1 1 1 3 11 8 7 5 0 0 1 4 13 73 6.7 8.9 6 4 2 3 0 0 2 3 13 6 2 3 0 3 5 18 70 8.9 11.2 1 0 2 1 0 0 4 2 9 2 0 0 1 7 6 3 38 11.2 13.4 0 0 1 0 0 0 4 13 8 5 2 0 1 1 3 5 43 13.4 17.9 0 0 2 0 0 0 1 7 10 8 2 0 1 4 12 9 56 17.9 22.4 0 0 0 0 0 0 0 1 5 5 0 0 3 2 1 2 19 22.4 29.1 0 0 0 0 0 0 0 0 0 4 0 0 0 1 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 23 14 16 8 2 5 23 43 62 43 17 8 10 26 35 61 396 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 1 1 0 1 1 3 1 2 2 2 3 3 2 1 0 1 24 2.2 4.5 3 2 5 2 1 1 2 6 7 2 2 2 4 2 1 3 45 4.5 6.7 4 9 9 0 2 0 1 8 7 7 4 0 2 0 3 5 61 6.7 8.9 7 0 4 4 1 0 5 13 3 5 1 1 3 3 3 10 63 8.9 11.2 2 0 4 0 0 0 3 3 5 2 0 0 0 1 3 10 33 11.2 13.4 0 0 0 0 0 0 0 2 3 2 0 0 0 0 3 2 12 13.4 17.9 1 0 0 0 0 0 0 2 3 1 0 0 0 1 5 3 16 17.9 22.4 0 0 0 0 0 0 0 1 0 0 0 0 0 2 0 1 4 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 18 12 22 7 5 4 12 37 30 21 10 6 11 10 18 35 258 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 16 7 16 10 3 7 13 9 7 9 12 9 8 7 11 10 154 2.2 4.5 36 22 22 11 7 14 25 40 24 16 17 14 13 21 24 42 348 4.5 6.7 28 26 28 6 4 2 9 32 38 20 12 2 5 13 26 41 292 6.7 8.9 17 12 11 12 1 2 17 31 31 17 9 7 5 15 33 43 263 8.9 11.2 9 8 14 3 0 3 21 28 41 16 4 6 2 18 37 30 240 11.2 13.4 8 4 4 0 0 0 15 27 29 27 7 2 1 15 48 29 216 13.4 17.9 23 0 4 0 0 0 8 33 40 36 19 3 5 25 65 44 305 17.9 22.4 2 0 0 0 0 0 2 7 20 56 19 1 5 21 12 16 161 22.4 29.1 0 0 0 0 0 0 0 3 7 30 9 0 7 12 7 3 78 29.1 40.3 0 0 0 0 0 0 0 0 0 18 10 0 2 1 0 0 31 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 3 ItOTALS 139 79 99 42 15 28 110 210 237 245 118 45 55 148 263 258 2091 Periods of Calm while In Stability Class: I A B C D E F G TotalI 1 0 0 40 24 9 11 851 Columbia Generating Station 36 2010 Radioactive Effluent Report Table 5-9 Year 2010, 33 Ft AGL Hours at each wind speed and direction during time period Elevation:

33 Start Date: 1/1/2010 Total number of Periods: 8759 Period: Annual Stop Date: 12/31/2010 Periods of No Data Recovery:

375 System Percent Data Recovery:

95.7%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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2.2 4.5 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 4.5 6.7 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 6.7 8.9 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 5 7 8.9 11.2 3 1 0 0 0 0 0 2 3 0 0 0 0 0 0 1 10 112 13.4 5 4 0 0 0 0 0 0 5 0 0 0 0 0 2 2 18 13.4 17.9 3 0 0 0 0 0 0 0 8 0 3 0 0 0 1 1 16 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 2 2 2 0 7 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 8 2 0 11 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 3 2 0 1 0 6 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 13 7 1 0 0 0 0 3 16 2 3 3 4 10 8 10 80 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 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2 2.2 4.5 4 3 0 0 0 0 1 0 0 0 0 1 2 0 0 5 16 4.5 6.7 3 1 0 0 0 0 0 0 2 0 0 0 1 1 0 7 15 6.7 8.9 10 7 0 0 0 0 0 0 2 1 1 0 0 0 2 11 34 8.9 11.2 5 3 2 0 0 0 0 4 10 1 0 0 1 1 0 4 31 11.2 13.4 2 1 0 0 0 0 0 2 10 3 0 0 0 3 3 0 24 13.4 17.9 4 2 0 0 0 0 1 2 3 5 4 2 1 4 0 3 31 17.9 22.4 0 0 0 0 0 0 0 0 0 2 0 1 0 1 0 0 4 22.4 29.1 0 0 0 0 0 0 0 0 0 2 1 2 0 3 0 0 8 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 2 40.3 90.0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 TOTALS 28 18 2 0 0 0 2 8 27 15 7 7 5 14 5 30 168 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 7 5 3 1 1 2 0 0 0 1 3 1 1 0 3 4 32 2.2 4.5 23 11 14 0 0 1 1 7 9 2 4 2 2 3 8 32 119 4.5 6.7 25 17 8 3 2 2 8 23 24 2 7 7 4 2 8 25 167 6.7 8.9 18 11 1 1 1 2 6 21 15 6 1 3 6 2 5 24 123 8.9 11.2 12 7 4 3 2 0 0 12 27 10 7 6 6 5 1 5 107 112 13.4 6 0 1 2 2 2 1 3 18 10 5 4 4 6 2 7 73 13.4 17.9 3 2 0 1 1 0 3 7 11 12 10 3 3 5 4 6 71 17.9 22.4 0 0 0 0 0 0 0 0 0 5 4 3 0 2 2 1 17 22.4 29.1 0 0 0 0 0 0 0 0 0 0 1 0 1 3 1 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 0 1 2 0 0 4 40.3 90.0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 TOTALS 94 53 31 12 9 9 19 73 104 49 42 29 28 30 34 104 720 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 12 14 25 13 17 7 10 24 16 23 11 10 12 9 20 22 245 2.2 4.5 42 45 51 17 11 16 64 57 49 24 22 24 24 31 40 58 575 4.5 6.7 30 43 51 13 10 19 47 67 41 25 21 22 14 20 35 51 509 6.7 8.9 12 17 25 7 4 13 37 48' 38 22 15 9 10 20 61 39 377 8.9 11.2 6 13 6 7 5 8 25 34 44 17 9 12 9 25 49 44 313 11.2 13.4 13 3 2 3 0 4 11 19 23 15 9 7 7 27 11 9 163 13.4 17.9 5 4 2 1 0 1 7 19 28 40 15 12 8 27 19 20 208 17.9 22.4 0 0 0 0 0 0 3 4 10 17 13 4 7 35 19 2 114 22.4 29.1 0 0 0 0 0 0 0 0 2 15 3 3 4 23 4 0 54 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 3 40.3 90.0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 TOTALS 120 139 162 61 47 68 204 273 251 198 118 103 95 218 260 245 2562 Columbia Generating Station 37 2010 Radioactive Effluent Report Table 5-9 Year 2010, 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 12 12 7 7 7 3 18 10 16 24 14 12 17 23 18 27 227 2.2 4.5 48 28 18 5 2 14 28 33 51 41 18 30 22 36 77 57 508 4.5 6.7 30 17 16 9 0 5 21 54 44 22 19 24 24 39 76 51 451 6.7 8.9 5 6 7 0 0 5 44 80 41 23 12 7 21 38 81 26 396 8.9 11.2 2 2 1 0 0 3 23 41 29 27 12 10 18 42 33 17 260 11.2 13.4 0 2 0 0 1 0 11 27 24 38 3 2 10 34 19 9 180 13.4 17.9 0 0 0 0 0 0 2 9 16 25 11 2 8 52 5 2 132 17.9 22.4 0 0 0 0 0 0 1 2 8 21 6 5 4 8 1 0 56 22.4 29.1 0 0 0 0 0 0 0 0 2 6 1 1 2 2 0 0 14 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 97 67 49 21_ _10 30 148 256 231 227 97 94 127 274 310 189 2227 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 23 23 12 11 5 6 11 23 23 14 13 12 15 12 16 17 236 2.2 4.5 52 34 25 6 1 7 18 58 48 26 11 8 14 32 56 57 453 4.5 6.7 17 14 19 2 1 1 22 65 48 21 10 4 12 25 55 53 369 6.7 8.9 7 4 5 0 0 2 16 68 35 14 3 3 6 14 46 9 232 8.9 11.2 0 2 4 0 0 0 9 37 12 7 0 1 8 7 8 0 95 11.2 13.4 0 0 1 0 0 0 2 10 6 2 0 0 2 3 2 0 28 13.4 17.9 0 0 0 0 0 0 0 3 2 2 0 0 0 1 0 0 8 17.9 22.4 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 3 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 99 77 66 19 7 16 78 264 175 88 37 28 57 94 183 136 12 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 18 22 12 3 2 4 2 8 12 9 6 4 3 9 17 23 154 2.2 4.5 50 59 24 2 1 0 17 36 25 11 7 5 7 12 33 65 354 4.5 6.7 18 8 9 1 0 0 11 45 13 8 2 1 0 3 28 39 186 6.7 8.9 0 1 3 0 0 0 5 33 17 2 0 0 2 5 18 8 94 8.9 11.2 0 0 3 0 0 0 0 15 2 0 0 0 0 1 6 0 27 11.2 13.4 0 0 2 0 0 0 0 1 1 0 0 0 2 0 0 0 6 13.4 17.9 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ITOTALS 86 90 53 6 3 4 35 138 71 30 15 10 14 30 102 135 822 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 72 77 60 35 32 22 41 65 67 72 47 39 48 53 74 93 897 2.2 4.5 220 180 132 30 15 38 129 192 182 104 62 70 71 114 214 275 2028 4.5 6.7 123 101 103 28 13 27 109 254 172 78 59 58 55 90 202 226 1698 6.7 8.9 53 47 41 8 5 22 108 250 148 68 32 22 45 79 213 122 1263 8.9 11.2 28 28 20 10 7 11 57 145 127 62 28 29 42 81 97 71 843 11.2 13.4 26 10 6 5 3 6 25 62 87 68 17 13 25 73 39 27 492 13.4 17.9 15 8 2 2 1 1 13 40 69 84 43 19 20 89 29 32 467 17.9 22.4 0 0 0 0 0 0 4 6 19 48 23 13 13 48 24 3 201 22.4 29.1 0 0 0 0 0 0 0 0 4 24 6 6 7 39 7 0 93 29.1 40.3 0 0 0 0 0 0 0 0 0 1 1 5 4 4 3 0 18 40.3 90.0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 3 ITOTALS 537 451 364 119 76 127 486 1015 875 609 319 274 330 670 902 849 8003 Peosof Calm while in Stability Class: A B C E F Total i 0 1 4 87 115 97 77 3811 Columbia Generating Station Colmbi GeeraingStaion38 2010 Radioactive Effluent Report Table 5-10 Year 2010, 245 Ft AGL Hours at each wind speed and direction during time period Elevation:

245 Start Date: 1/11/2010 Total number of Periods: 8759 Period: Annual Stop Date: 12/31/2010 Periods of No Data Recovery:

272 System Percent Data Recovery:

96.9%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 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 4.5 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 4.5 6.7 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 6.7 8.9 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 8.9 11.2 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 4 6 11.2 13.4 7 2 0 0 0 0 0 0 4 0 0 0 0 0 0 2 15 13.4 17.9 0 3 2 0 0 0 0 0 7 3 0 0 0 0 2 2 19 17.9 22.4 0 2 0 0 0 0 0 0 1 3 2 0 0 0 2 0 10 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 2 2 1 0 6 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 0 8 3 0 12 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 4 0 0 0 5 TOTALS 11 7 2 1 0 0 0 2 12 7 3 1 6 10 8 9 79 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 1 0 0 0 0 0 0 1 1 0 0 0 0 0 3 2.2 4.5 4 1 0 0 1 0 1 0 1 0 0 1 0 0 0 1 10 4.5 6.7 3 1 0 0 0 0 0 0 0 0 0 1 0 1 0 6 12 6.7 8.9 6 8 1 0 0 0 0 0 1 2 0 0 0 0 2 3 23 8.9 11.2 5 4 1 0 0 0 0 2 5 1 1 0 2 0 1 11 33 11.2 13.4 3 4 2 0 0 0 0 0 5 6 0 0 1 1 0 0 22 13.4 17.9 2 3 1 0 0 0 0 1 9 4 3 1 1 2 6 2 35 17.9 22.4 1 1 0 0 0 0 1 0 1 6 3 3 0 2 1 0 19 22.4 29.1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 3 29.1 40.3 0 0 0 0 0 0 0 0 0 1 1 2 0 1 2 0 7 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 2 TOTALS 24 22 6 0 1 0 2 3 22 22 10 9 4 9 12 23 169 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 5 1 1 0 0 1 0 1 0 2 1 1 0 0 5 2 20 2.2 4.5 20 15 9 3 0 0 2 1 6 2 4 2 0 3 5 21 93 4.5 6.7 11 11 9 7 1 2 1 9 14 9 2 1 3 2 8 21 111 6.7 8.9 21 17 3 2 1 1 6 21 18 7 2 10 7 4 6 25 151 8.9 11.2 12 11 4 3 1 2 2 10 23 7 2 3 3 1 3 10 97 11.2 13.4 8 4 1 0 3 0 0 0 21 16 9 2 8 2 0 6 80 13.4 17.9 6 2 2 2 5 1 3 4 18 26 9 5 8 8 2 6 107 17.9 22.4 1 0 0 0 0 0 1 0 1 10 14 2 3 6 3 3 44 22.4 29.1 0 0 0 0 0 0 0 0 0 3 4 3 0 1 2 1 14 29.1 40.3 0 0 0 0 0 0 0 0 0 0 1 0 1 2 2 0 6 40.3 90.0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 3 TOTALS 84 61 29 17 11 7 15 46 101 83 48 29 34 30 36 95 726 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 12 12 24 17 13 10 13 8 17 13 6 10 3 9 10 13 190 2.2 4.5 36 28 41 22 12 10 32 63 35 25 29 18 20 19 28 43 461 4.5 6.7 22 23 39 20 8 16 46 62 45 21 19 16 14 16 21 48 436 6.7 8.9 15 27 24 21 8 8 21 41 48 18 16 20 7 10 33 34 351 8.9 11.2 8 12 9 14 4 7 29 24 40 25 13 14 7 17 37 25 285 11.2 13.4 12 9 4 4 4 6 10 12 35 21 10 6 5 24 46 32 240 13.4 17.9 24 3 4 0 3 4 18 24 38 32 21 13 12 31 37 21 285 17.9 22.4 1 3 3 0 0 2 5 4 10 41 12 5 7 26 16 16 151 22.4 29.1 0 0 0 0 0 2 0 4 6 29 22 8 10 32 25 3 141 29.1 40.3 0 0 0 0 0 0 0 0 0 12 15 3 6 34 11 0 81 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 130 117 148 98 52 65 174 242 274 237 163 113 91 218 264 235 2621 Columbia Generating Station 39 2010 Radioactive Effluent Report Table 5-10 Year 2010, 245 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 4.5 6.7 8.9 11.2 13.4 17.9 22A 29.1 40.3 2.2 14 6 9 4.5 20 15 17 6.7 19 14 17 8.9 14 15 5 11.2 11 10 10 13.4 5 3 6 17.9 12 4 7 22.4 1 0 1 29.1 0 0 0 40.3 0 0 0 90.0 0 0 0 7 4 4 9 8 20 8 4 6 4 0 6 5 0 5 1 1 1 0 0 2 0 1 2 0 0 0 0 0 0 a 0 D 8 10 4 9 9 6 6 5 11 6 118 27 25 21 13 15 17 12 19 22 25 285 14 23 25 14 9 8 10 18 36 33 258 10 30 24 17 10 10 11 29 40 35 260 20 21 40 29 9 9 19 27 52 27 294 16 24 40 23 14 6 15 33 67 18 273 18 42 38 52 29 10 12 69 75 34 404 3 8 21 41 32 6 13 75 31 8 243 0 5 4 33 12 6 4 69 1 0 134 0 0 0 19 6 6 3 8 0 0 42 0 0 0 0 0 1 2 0 0 0 3 ITOTALS 96 67 72 34 18 46 116 188 217 250 145 85 107 352 335 186 2314 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 6 6 4 2 5 6 5 7 4 6 3 5 4 5 6 79 2.2 4.5 20 16 16 18 10 11 13 22 28 17 22 13 5 15 17 27 270 4.5 6.7 20 19 12 5 4 3 18 31 32 19 16 5 6 16 14 37 257 6.7 8.9 15 14 17 10 0 0 12 30 35 23 10 14 6 9 30 45 270 8.9 11.2 9 5 8 2 0 1 13 22 23 18 8 5 3 19 33 19 188 11.2 13.4 0 5 3 1 0 1 11 25 25 16 5 2 11 12 28 13 158 13.4 17.9 2 0 3 2 0 0 5 22 20 23 5 0 8 34 47 24 195 17.9 22.4 0 0 3 5 0 0 0 3 11 8 1 0 4 25 8 5 73 22.4 29.1 0 0 2 0 0 0 0 1 0 5 0 0 0 9 0 0 17 29.1 40.3 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 3 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 71 65 70 47 16 21 78 161 181 135 74 42 48 143 182 176 1510 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 7 4 1 5 5 5 5 5 8 7 10 4 5 4 2 6 83 2.2 4.5 14 11 15 8 1 7 10 16 23 13 5 8 10 5 7 15 168 4.5 6.7 27 21 13 3 3 4 6 21 24 17 8 4 4 1 8 15 179 6.7 8.9 16 7 9 6 1 0 10 34 17 15 6 1 3 4 9 35 173 8.9 11.2 10 2 9 1 0 0 6 10 12 14 1 0 0 1 19 26 111 112 13.4 3 0 1 0 0 0 1 9 7 5 2 0 0 1 15 13 57 13.4 17.9 2 0 0 0 0 0 2 8 5 7 1 0 1 9 34 14 83 17.9 22.4 0 0 1 1 0 0 0 3 0 1 0 0 0 3 1 3 13 22.4 29.1 0 0 2 0 0 0 0 0 0 0 0 0 0 3 0 0 5 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 79 45 51 24 10 16 40 106 96 79 33 17 23 31 95 127 872 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 43 29 42 33 24 25 32 29 36 36 33 24 19 22 33 33 493 2.2 4.5 115 86 98 60 32 48 85 128 114 70 75 59 47 61 79 133 1290 4.5 6.7 102 89 90 44 20 31 85 146 140 80 54 35 37 54 87 160 1254 6.7 8.9 89 88 59 43 10 15 59 156 143 82 44 55 34 56 120 177 1230 8.9 11.2 56 44 41 25 5 15 70 90 143 94 34 31 34 65 145 122 1014 11.2 13.4 38 27 17 6 8 8 38 70 137 87 40 16 40 73 156 84 845 13.4 17.9 48 15 19 4 8 7 46 101 135 147 68 29 42 153 203 103 1128 17.9 22.4 4 6 8 6 1 4 10 18 45 110 64 16 27 137 62 35 553 22.4 29.1 0 0 4 0 0 2 0 10 10 72 39 17 16 117 29 4 320 29.1 40.3 0 0 0 0 0 0 0 0 0 34 25 11 10 53 18 0 151 40.3 90.0 0 0 0 0 0 0 0 0 0 1 0 3 7 2 0 0 13 TOTALS 495 384 378 221 108 155 425 748 903 813 476 296 313 793 932 851 8291 Periods of Calm while in Stability Class: A B C D E F G Total 1 0 5 80 51 28 31 196 I Columbia Generating Station 40 2010 Radioactive Effluent Report Table 5-11 Year 2010 Growing Season with Solar Irradiance

> 5 watts/m 2 33 Ft AGL 1-Inura at ~i~h wind imnaad and dimntinn dudnn tirna narind Elevation:

33 StartDate:

4/1512010 Total number of Periods: 2360 Period: Growing Season Stop Date: 10/15/2010 Periods of No Data Recovery:

211 System Percent Data Recovery:.

91.8%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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.2 4.5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 4.5 6.7 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 6.7 8.9 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 4 10 8.9 11.2 3 1 0 0 0 0 0 2 3 0 0 0 0 0 0 1 15 11.2 13.4 5 4 0 0 0 0 0 0 5 0 0 0 0 0 2 2 24 13.4 17.9 3 0 0 0 0 0 0 0 8 0 3 0 0 0 1 1 23 17.9 22.4 0 0 0 0 0 0 0 0 0 1 0 0 2 2 2 0 15 22.4 29.1 0 0 0 0 0 0 0 0 0 1 0 0 0 8 2 0 20 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 3 2 0 1 0 16 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 TOTALS 13 7 1 0 0 0 0 2 16 2 3 3 4 10 8 9 144 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 0 0 0 0 0 0 1 0 0 0 0 0 0 2 2.2 4.5 3 2 0 0 0 0 1 0 0 0 0 1 2 0 0 4 15 4.5 6.7 3 1 0 0 0 0 0 0 2 0 0 0 1 1 0 5 16 6.7 8.9 7 7 0 0 0 0 0 0 2 1 1 0 0 0 1 10 33 8.9 11.2 5 3 2 0 0 0 0 4 10 1 0 0 1 1 0 4 36 11.2 13.4 2 1 0 0 0 0 0 2 10 2 0 0 0 3 3 0 29 13.4 17.9 2 0 0 0 0 0 0 2 3 2 4 2 1 3 0 1 27 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 9 22.4 29.1 0 0 0 0 0 0 0 0 0 1 1 1 0 3 0 0 15 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 12 40.3 90.0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 12 TOTALS 22 14 2 0 0 0 1 8 27 8 7 5 5 13 4 24 206 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 4 1 1 1 2 0 0 0 1 3 1 0 0 1 3 23 2.2 4.5 14 9 12 0 0 1 1 7 9 2 4 2 2 3 8 14 90 4.5 6.7 17 13 7 3 2 2 8 23 23 2 7 5 3 2 6 14 140 6.7 8.9 7 9 1 1 1 2 6 17 13 6 1 2 5 2 4 14 95 8.9 11.2 8 3 4 3 2 0 0 11 23 8 5 5 3 2 1 4 87 11.2 13.4 3 0 0 2 1 1 1 3 16 7 2 4 3 3 1 3 56 13.4 17.9 0 1 0 1 0 0 2 7 11 5 2 2 3 3 4 0 48 17.9 22.4 0 0 0 0 0 0 0 0 0 3 0 2 0 2 2 1 18 22.4 29.1 0 0 0 0 0 0 0 0 0 0 1 0 0 3 1 0 14 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 0 1 2 0 0 14 40.3 90.0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 12 TOTALS 53 39 25 12 7 8 18 68 95 35 25 23 20 22 28 53 597 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 4 4 15 8 13 2 3 11 5 7 7 2 4 1 1 5 93 22 4.5 7 19 29 12 8 14 48 32 20 10 13 11 12 10 6 9 262 4.5 6.7 10 15 26 10 10 17 40 41 23 16 13 16 5 6 7 9 267 6.7 8.9 6 10 16 7 4 12 26 28 20 8 6 6 5 8 9 5 180 8.9 11.2 4 5 5 7 5 8 19 21 28 9 4 5 5 14 5 7 156 11.2 13.4 4 1 0 3 0 4 8 16 18 5 5 5 3 5 2 1 86 13.4 17.9 1 1 2 1 0 1 2 18 16 7 5 4 4 12 8 1 90 17.9 22.4 0 0 0 0 0 0 0 1 1 2 4 1 1 17 6 0 41 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 1 2 18 4 0 34 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 13 40.3 90.0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 12 tOTALS 36 55 93 48 40 58 146 169 131 64 57 51 41 92 50 37 1234 Columbia Generating Station 41 2010 Radioactive Effluent Report Table 5-11 Year 2010 Growing Season with Solar Irradiance

> 5 watts/m 2 , 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 3 1 2 3 0 4 0 1 1 0 1 0 2 2 3 26 2.2 4.5 8 3 3 1 0 3 9 11 6 5 3 2 2 2 3 4 67 4.5 6.7 4 4 3 2 0 0 5 14 3 4 1 2 2 5 3 2 57 6.7 8.9 0 1 2 0 0 2 14 5 6 7 3 0 1 1 2 3 51 8.9 11.2 0 1 0 0 0 1 6 6 7 1 0 0 1 4 2 3 37 11.2 13.4 0 1 0 0 0 0 4 4 1 2 0 1 0 2 2 1 24 13.4 17.9 0 0 0 0 0 0 0 0 1 0 1 0 0 6 0 1 16 17.9 22.4 0 0 0 0 0 0 0 0 3 0 0 1 0 0 0 0 12 22.4 29.1 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 11 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 TOTALS 14 13 9 5 3 6 42 40 29 20 8 7 7 22 14 17 322 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 5 3 2 1 1 2 5 2 0 0 2 2 0 0 2 29 2.2 4.5 5 5 1 0 0 1 5 9 5 2 1 0 0 2 1 2 41 4.5 6.7 1 6 9 0 0 0 1 14 7 2 0 0 0 0 1 1 45 6.7 8.9 0 0 0 0 0 0 1 5 1 0 0 0 0 0 1 0 12 8.9 11.2 0 0 0 0 0 0 1 3 2 0 0 0 0 0 0 0 11 11.2 13.4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 7 13.4 17.9 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 8 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 TOTALS 7 16 13 2 1 2 10 36 18 5 1 2 2 2 3 5 191 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 3 1 2 0 0 0 0 1 0 0 0 0 0 0 2 2 12 2.2 4.5 5 9 4 0 0 0 5 5 1 0 0 0 0 0 2 1 34 4.5 6.7 0 1 1 0 0 0 2 4 2 1 0 0 0 0 1 1 16 6.7 8.9 0 0 0 0 0 0 1 4 0 0 0 0 0 0 0 0 9 8.9 11.2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 6 11.2 13.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 13.4 17.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 17.9 22.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 22.4 29.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 29.1 40.3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 40.3 90.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 TOTALS 8 11 7 0 0 0 8 15 3 1 0 0 0 0 5 4 128 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 14 17 23 13 18 5 9 17 8 10 10 6 6 3 6 15 180 2.2 4.5 43 47 49 13 8 19 69 64 41 19 21 16 18 17 20 35 499 4.5 6.7 35 41 46 15 12 19 56 96 60 25 21 23 11 14 18 32 524 6.7 8.9 21 28 19 8 5 16 48 59 42 22 11 8 11 11 17 36 362 8.9 11.2 20 13 11 10 7 9 26 48 73 19 9 10 10 21 8 19 313 11.2 13.4 14 7 0 5 1 5 13 25 50 17 7 10 6 13 10 7 190 13.4 17.9 6 2 2 2 0 1 4 27 40 14 15 8 8 24 13 4 170 17.9 22.4 0 0 0 0 0 0 0 1 4 6 4 4 3 22 10 1 55 22.4 29.1 0 0 0 0 0 0 0 0 1 2 2 2 3 32 7 0 49 29.1 40.3 0 0 0 0 0 0 0 0 0 1 0 4 3 4 3 0 15 40.3 90.0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 3[TOTALS 153 155 150 67 51 74 225 338 319 135 101 91 79 161 112 149 2360 Periods of Calm while in Stability Class: A B C D E F G Total 1 3 22 15 13 4 0 58 Columbia Generating Station 42 2010 Radioactive Effluent Report 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 2010.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 6-1 shows the highest calculated doses at the site boundary and beyond the site boundary.

Table 6-1 also shows the quarterly and annual dose for the nearest and highest exposed resident identified in the land use census. Table 6-2 lists the annual 50-mile dose using values obtained from the ALARA annual integrated population dose summary (person-rem).

Table 6-2 also provides the annual individual doses associated with each pathway. These values were obtained by dividing the ALARA integrated dose (person-rem) by the estimated year 2000 50-mile population (356,993) 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 2010 Land Use Census did not identify broad leaf vegetable gardens or milk animals within the 5-mile radius. Cattle, goats, and horses were observed within 5-miles. Although it was not determined if the nearest residents were actually consuming meat from these animals, the beef and goat meat pathways were assumed in the sectors where these animals were observed.

The NRC computer code GASPAR was used for dose estimates.

Because the GASPAR code only calculates a beef meat pathway, IAEA Technical Series Report 4721 was used to derive nuclide-specific ratios to convert the GASPAR meat dose output to dose from goat meat. 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 assumes that if there is a vegetable pathway, the pathway includes broad-leaf vegetables even though they were not observed.

As such, the vegetation calculations are conservative.

Based on Electric Power Research Institute (EPRI) Technical Report 10211062, the total activity of Carbon-14 (C-14) released to the environment as 14CO 2 was estimated to be 17.8 +/- 2.1 Curies. As C-14 in the form of 1 4 CO 2 is a non-depositing, gaseous effluent, it enters the food chain through plant photosynthesis.

Since Columbia Generating Station is a continuous release plant, normally, offsite dose is based on meteorological data throughout the year. For C-14 dose analysis, however, a Joint Frequency Distribution (JFD) table of atmospheric data was developed based on daylight hours (solar irradiance

> 5 watts per square meter)during the growing season of both vegetables and pasture grass for beef (April 15th through October 15th). The JFD table was used as input into the NRC XOQDOQ computer code from which dispersion estimates were obtained.

This method 1 Handbook Of Parameter Values For The Prediction Of Radionuclide Transfer In Terrestrial And Freshwater Environments, IAEA Technical Series Report 472, 2010 2 Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents.

EPRI, Palo Alto, CA: 2010 1021106 Columbia Generating Station 43 2010 Radioactive Effluent Report provides a more accurate method of determining the average air concentration of C-14 during times of photosynthesis.

Both inhalation and ingestion pathways contribute to dose from C-14. The highest dose calculated was for the resident at 4.24 miles in the ESE sector due to higher dispersion and deposition in that sector. The annual dose to the potential maximally exposed individual (child living at resident location 4.24 miles ESE) from gaseous releases of C-14 is 7.12E-02 mrem to the critical organ (bone) and 1.42E-02 mrem to the total body. The available dose pathways at this location were inhalation and the ingestion of fruits and non-leafy vegetables.

This dose is only included in Table 6.0-C of this section because of the significant difference in the JFD tables used for the above dose analysis as compared to the JFD tables with all atmospheric data for 2010.For all other gaseous releases, the highest calculated dose to a child living at locations identified in the most recent land use census was 2.83E-03 mrem to the total body, 3.14E-03 mrem to the thyroid, and 4.30E-03 mrem to the skin. This location was at 4.24 miles in the East South East sector.Periodically, Columbia Generating Station offers public tours of selected locations within the site boundary.

Calculations assumed an eight (8) hour per year exposure to the plume, ground shine, and inhalation pathways.

The organ with the highest dose was the skin at 6.05E-04 mrem.During 2010, Members of the Public worked at the Industrial Development area in the E and ESE sectors of the owner controlled area. The maximum dose to these individuals was also calculated assuming adult exposure to the plume, inhalation, and ground deposition pathways.The following table (6.0-A) 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 total indicated hours spent at each location.Table 6.0-A; Estimated Dose to Members of the Public within the Site Boundary Total Body Thyroid Highest Other Beta Air Gamma Direct Hours Dose Dose Organ Dose Dose Air Dose Radiation Location Spent (mrem) (mrem) (mrem) (mrad) (mrad) , (mrem)Tour Visitors 8.OOE+00 3.81 E-04 3.82E-04 6.05E-04 1.96E-04 5.55E-04 2.11 E-02 Fiding Range 8.OOE+00 4.58E-06 4.59E-06 7.27E-06 2,35E-06 6.66E-06 6.39E-04 WNP-4 Whse.2-4 2.60E+03 2.16E-02 2.17E-02 3.44E-02 4.98E-03 1.41E-02 O.OOE+00 WNP-1 Bldg 121 2.60E+03 9.65E-03 9.66E-03 1.54E-02 1.12E-02 3.17E-02 O.OOE+00 Columbia Generating Station 44 2010 Radioactive Effluent Report Columbia Generating Station 44 2010 Radioactive Effluent Report Table 6.0-B provides the results of annual dose calculations for the highest dose age group for each identified land use census location from gaseous effluents.

The highest 'Other Organ' in all cases was the skin.Table 6.0-B; Estimated Dose to Residents identified in the 2010 Land Use Census Highest Total Body Thyroid Other Organ Beta Gamma Dose Dose Dose Air Dose Air Dose Age Location (mrem) (mrem) (mrem) (mrad) (mrad) Group Resident (4.47 miles NE) 1.02E-03 1.08E-03 1.56E-03 4.88E-04 1.38E-03 Child Resident (4.01 miles ENE) 5.33E-04 6.01E-04 7.85E-04 2.23E-04 6.31E-04 Child Resident (4.59 miles E) 1.95E-03 2.09E-03 2.95E-03 8.86E-04 2.51 E-03 Child Resident (4.65 miles E) 1.96E-03 2.10E-03 2.97E-03 8.88E-041 2.52E-03 Child Resident (4.24 miles ESE) 2.83E-03 3.14E-03 4.30E-03 11.31E-03 3.71E-03 Child Based on the available exposure pathways and the highest dispersion and deposition values, the critical receptor is the resident at 4.24 miles ESE. Table 6.0-C adds the potential dose from Carbon-14 to the above dose estimate.Table 6.0-C; Total Potential Dose to Critical Receptor (4.24 miles ESE)Total Body Bone Thyroid Skin Dose from Carbon-14 1.42E-02 7.12E-02 1.42E-02 1.42E-02 Dose from Other Nuclides 2.83E-03 2.60E-03 3.14E-03 4.30E-03 Total Dose 1.70E-02 7.38E-02 1.73E-02 1.85E-02 For environmental thermoluminescent dosimeter (TLD) stations at or beyond the site boundary where preoperational (background) data was acquired, no increase in the average ambient exposure was observed in 2010 from the preoperational values.Columbia Generating Station 45 2010 Radioactive Effluent Report Dose Tables Dose from Carbon-14 is not included in these tables for reasons discussed earlier in this report.Table 6-1 Summary of Doses from Gaseous Effluents The first six tables in this section show maximum estimated exposure and dose at and beyond the site boundary although no real person is resident at the site boundary.

The maximum exposure and dose beyond the site boundary is estimated for locations with actual residents.

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

Beta air dose (mrad) 4.52E-03 4.09E-03 5.82E-03 4.04E-03 1.82E-02 Gamma air dose (mrad) 1.28E-02 1.16E-02 1.65E-02 j 1.15E-02 5.15E-02 2. Maximum Air Dose Beyond the Site Boundary 1 st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*

Beta air dose (mrad) 2.30E-04 3.60E-04 3.48E-04 4.45E-04 1.31E-03 Gamma air dose (mrad) 6.52E-04 1.02E-03 9.88E-04 1.26E-03 3.71 E-03 3. Maximum Annual Dose at the Site Boundary Annual Dose Annual total body dose (mrem) 3.50E-02 Annual skin dose (mrem) 5.57E-02 4. Maximum Annual Dose Beyond the Site Boundary Annual Dose Annual total body dose (mrem) 2.83E-03 Annual skin dose (mrem) 4.30E-03 Columbia Generating Station 46 2010 Radioactive Effluent Report Columbia Generating Station 46 2010 Radioactive Effluent Report Table 6-1 Summary of Doses from Gaseous Effluents (Continued)

5. Maximum Organ Dose at the Site Boundary (1.2 miles)6. Maximum Organ Dose Beyond the Site Boundary 1st 2nd 3rd 4th Annual Maximum Organ dose Quarter Quarter Quarter Quarter Cumulative*(mrem) 1.46E-03 1.18E-03 1.12E-03 1.49E-03 4.30E-03 7. Dose to Nearest Residents within 5-Miles in each Sector with Residents 4.47 Miles NE 1st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*

Beta Air Dose (mrad) 5.OOE-05 1.86E-04 1.06E-04 1.01E-04 4.88E-04 Gamma Air Dose (mrad) 1.42E-04 5.28E-04 3.OOE-04 2.87E-04 1.38E-03 Maximum Organ dose (mrem) 1.80E-04 5.94E-04 3.36E-04 3.32E-04 1.56E-03 4.01 Miles ENE 1st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*

Beta Air Dose (mrad) 4.63E-05 2.38E-04 1.42E-04 3.30E-05 2.23E-04 Gamma Air Dose (mrad) 1.31 E-04 6.74E-04 4.02E-04 9.35E-05 6.31 E-04 Maximum Organ dose (mrem) 1.67E-04 7.62E-04 4.52E-04 1.27E-04 7.85E-04 4.59 Miles E 1st 2nd 3 rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*

Beta Air Dose (mrad) 1.71 E-04 2.03E-04 1.77E-04 1.70E-04 8.86E-04 Gamma Air Dose (mrad) 4.86E-04 5.75E-04 5.01 E-04 4.82E-04 2.51 E-03 Maximum Organ dose (mrem) 6.06E-04 6.74E-04 5.85E-04 6.17E-04 2.95E-03 Columbia Generating Station 47 2010 Radioactive Effluent Report Table 6-1 Summary of Doses from Gaseous Effluents (Continued)

7. Dose to Nearest Residents within 5-Miles in each Sector with Residents (Continued) 4.65 Miles E_1 s2 Wna J ra 4tn Annual Quarter Quarter Quarter Quarter Cumulative*

Beta Air Dose (mrad) [ 1.75E-04 1.99E-04 1.73E-04 1.70E-04 8.88E-04 Gamma Air Dose (mrad) 4.97E-04 5.62E-04 4.90E-04 4.82E-04 2.52E-03 Maximum Organ dose (mrem) 6.25E-04 6.61 E-04 5.75E-04 6.22E-04 2.97E-03 4.24 Miles ESE 1st 2nd 3rd 4th Annual Quarter Quarter Quarter Quarter Cumulative*

Beta Air Dose (mrad) 2.30E-04 3.60E-04 3.48E-04 4.45E-04 1.31 E-03 Gamma Air Dose (mrad) 6.52E-04 1.02E-03 9.88E-04 1.26E-03 3.71 E-03 Maximum Organ dose (mrem) 7.75E-04 1.18E-03 1.12E-03 1.49E-03 4.30E-03 Rather than the sum of the quarters, the Annual Cumulative values are based on annual meteorological data and total annual effluents.

For each time period, the dose 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 (1974) which includes the prospective dose component arising from retention in the body beyond the period of environmental exposure.Columbia Generating Station 48 2010 Radioactive Effluent Report Columbia Generating Station 48 2010 Radioactive Effluent Report Table 6-2 50-Mile Population Dose from Gaseous Effluents A. 50-mile population collective dose Exposure Total Body Max. Organ Pathway (person-rem) (person-rem)

Plume 1.35E-02 2.39E-02 Ground 4.88E-04 5.73E-04 Inhalation 3.58E-03 3.58E-03 Vegetables 2.93E-03 2.90E-03 Milk 1.06E-03 1.01 E-03 Meat 5.33E-04 5.18E-04 Total 2.21 E-02 3.25E-02 B. Average Individual*

Exposure Total Body Max. Organ Pathway (mrem) (mrem)Plume 3.78E-05 6.69E-05 Ground 1.37E-06 1.61 E-06 Inhalation 1.OOE-05 1.00E-05 Vegetables 8.21E-06 8.12E-06 Milk 2.97E-06 2.83E-06 Meat 1.49E-06 1.45E-06 Total 6.19E-05 9.10E-05* These values are derived by dividing the 50-mile population collective doses by the population within 50 miles of Columbia Generating Station (356,993).

The population estimate is based on the 2000 census conducted by the United States Census Bureau and documented in the Columbia Generating Station Final Safety Analysis Report. The Maximum Organ was the thyroid.Columbia Generating Station 49 2010 Radioactive Effluent Report Columbia Generating Station 49 2010 Radioactive Effluent Report 7.0 REVISIONS TO THE ODCM No revisions were made to the ODCM in 2010.8.0 REVISIONS TO THE PROCESS CONTROL PROGRAM (PCP)There were no revisions to the Process Control Program in 2010.9.0 NEW OR DELETED LOCATIONS FOR DOSE ASSESSMENTS AND/OR ENVIRONMENTAL MONITORING LOCATIONS 9.1 The 2010 Five-Mile Land Use Census showed some changes which resulted in an additional dose assessment location and additional ingestion pathways.

At 4.65 miles from the plant in the E sector, 5-6 goats were observed.

All but one were juvenile and none were milking goats. To be conservative, although no evidence exists to support the assumption, CGS assumes that they may be raised for meat consumption by a nearby resident.

Although horses were observed 4.4 miles from CGS in the ESE sector, CGS is assuming they are not being raised for meat consumption.

As substantial commercial fruit orchards and corn crops were observed in all eastern sectors with residents, it is assumed that these crops are being consumed by the residents of those sectors. The following table summarizes the assumed dose pathways: Ingestion Plume Ground Inhalation Fruit or Beef Goat Location I Shine Vegetation Meat I Meat Resident (4.47 miles NE) X X X X Resident (4.01 miles ENE) X X X X X Resident (4.59 miles E) X X X X Resident (4.65 miles E) X X X X X Resident (4.24 miles ESE) X X X X 9.2 There were no new locations for environmental monitoring formally adopted into the program based on the 2010 Land Use Census.9.3 No dose assessment or environmental monitoring locations were deleted.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 50 2010 Radioactive Effluent Report Columbia Generating Station 50 2010 Radioactive Effluent Report

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