Text

Radioactive Effluent Release Report
	ML11129A074
Person / Time
Site:	South Texas
Issue date:	04/28/2011
From:	Bryant D J; South Texas
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	NOC-AE-11002669, STI: 32858313
	Download: ML11129A074 (116)
	v • d • e

Nuclear Operating Compan, South Texas Project Electric Generatlin Station PO Box 28.9 Wadsworth, Texas 77483"VvvlýApril 28, 2011 NOC-AE-1 1002669 File No.: G25 10 CFR 50.36a U. S. Nuclear Regulatory Commission Attention:

Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 South Texas Project Units 1 & 2 Docket Nos. STN 50-498 & 50-499 2010 Radioactive Effluent Release Report Pursuant to the South Texas Project Technical Specification 6.9.1.4 and 10 CFR 50.36a, STP Nuclear Operating Company provides the attached 2010 Radioactive Effluent Release Report.The report covers the period from January 1, 2010, to December 31, 2010.There are no commitments included in this report.If there are any questions on this report, please contact either Philip Walker at (361) 972-8392 or me at (361) 972-7172.Daniel J. Bryant Manager, Chemistry PLW

Attachment:

2010 Radioactive Effluent Release Report STI: 32861691 NOC-AE-1 1002669 Page 2 of 2 cc: (paper copy)(electronic copy)Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Balwant K. Singal Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint North (MS 8B1)11555 Rockville Pike Rockville, MD 20852 Senior Resident Inspector U. S. Nuclear Regulatory Commission P. 0. Box 289, Mail Code: MN1 16 Wadsworth, TX 77483 C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin, TX 78704 A. H. Gutterman, Esquire Morgan, Lewis & Bockius LLP Balwant K. Singal U. S. Nuclear Regulatory Commission John Ragan Catherine Callaway Jim von Suskil NRG South Texas LP Ed Alarcon Kevin Polio Richard Pena City Public Service Peter Nemeth Crain Caton & James, P.C.C. Mele City of Austin Richard A. Ratliff Texas Department of State Health Services Alice Rogers Texas Department of State Health Services L L II 2010 Radioactive Effluent Release Report SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Completed by Generation in accordance with Technical Specifications for United States Nuclear Regulatory Commission License Nos.NPF-76 & NPF-80 April 2011 Authored by: Technical Review: Kim W. Reynolds Effluent Chemist Chemistry Division Gordon E. Williams, CHP Health Physicist Health Physics Division Daniel J. Bryot Manager Chemistry Division 6 _Approved by: OPGP03ZX0007, Preparation of the Radioactive Effluent Release Report South Texas Identification (STI): 3285313 "2CI 1 RADIOACTIVE~

EFFLUE INT RELEPASE REPORT 201 0 SOUTH TEXAS PROJECT Blank Page INTENTIONALLY LEFT BLANK RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT TABLE OF CONTENTS TABLE OF CONTENTS PAGE

SUMMARY

TAB Sum m ary and Introduction

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

1-1 EFFLUENT PROGRAM TAB Supplemental Information for Effluent and Waste Disposal ...............................................

2-1 Regulatory Limits Effluent Concentrations Limits Average Energy (Million Electron Volts/Disintegration)

Measurement and Approximations of Total Activity Batch Releases Abnormal (Unplanned)

Releases Estimate of Total Error Solid Waste Shipments Radiological Impact on Man Meteorological Data Lower Limit of Detection Dose to Members of the Public Technical Specifications and Offsite Dose Calculation Manual Controls Reporting R equirem ents ............................................................................................................................

3-1 Offsite Dose Calculation Manual Changes Annual Land Use Census Radioactive Waste Treatment System Design Modification Description Inoperable Effluent Monitoring Instrumentation Explanation Gas Storage Tank Curie Limit Violation Description Unprotected Outdoor Tank Curie Limit Violation Description Abnormal (Unplanned)

Release Description Radioactive Waste Process Control Program Changes 2009 Radioactive Effluent Release Report Changes RADIOLOGICAL DATA G aseous Effl uents .....................................................................................................................

4-1 Liquid Effl uents ........................................................................................................................

5-1 Solid W aste and Irradiated Fuel Shipments

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

6-1 i RAr)JOACTIVP PFFI I JFNT Rfl PASF RFPORT 2010 RADIOACTIVE EFFLUENT RELEASE RFPORT 2010 SOUTH TEXAS PROJECT TABLE OF CONTENTS TABLE OF CONTENTS PAGE DOSE DATA TAB Dose A ccum ulations .................................................................................................................

7-1 Results of the Direct Radiation Measurement Program .......................................................

8-1 METEOROLOGICAL DATA TAB Joint Frequency Tables ............................................................................................................

9-1 Joint Frequency Tables for First Quarter Joint Frequency Tables for Second Quarter Joint Frequency Tables for Third Quarter Joint Frequency Tables for Fourth Quarter Joint Frequency Tables for First Quarter Batch Release Joint Frequency Tables for Second Quarter Batch Release I I 1 I U 1 I I I I I I I I I I I I R A DIOACTIVF FFF1 I IFNTRF] FAvFRFP0R'r M010 I4011 TII TFXAIý PR01VFCT RADIOACTIVI~

PEE! I JFNT RE! FASF REPORT 2fl(() SO! ITfI TEXAS PROJECT Summary and Introduction Report Summary During 2010, as in all previous years, operation of the South Texas Project created no adverse effects or health risks. The maximum radiation exposure calculated for a hypothetical person living at the boundary of the South Texas Project during 2010 due to operation of the South Texas Project was less than one millirem.

For reference, this dose may be compared to the average annual radiation exposure of 620 millirem to people in the United States from all sources. Of that 620 millirem, natural radiation sources in the environment accounted for 50% of the radiation exposure, whilst 48% of the exposure occurred from medical procedures.

Nuclear power operations contributed less than one millirem.Figure 1-1 All Exposure Categories Collective Effective Dose (percent), 2006 baclagruund (3 %J (bcg '1 (37%')(medloW (24 %)/X 7 InduUn ('O 1 %)(~.ud- 1212 (Owdmai (12 %) nrW~~ fluorosomv lmeod"C81 (7 %)*NCRP (2006). National Council on Radiation Protection and Measurements, Ionizing Radiation Exposure of the Population qf the United States, (Bethesda, Maryland), NCRP Report No. 160.During 2010, the estimated total body dose to a hypothetical Member of the Public with the highest probability for exposure from radioactive effluents and direct radiation was 0.023 millirem.

This total represents approximately 0.09% of the limits of 40 C.F.R. §190. Based on our 2010 Land Use Census, real individuals reside in the West by Southwest Sector, approximately 4,000 meters (2.5 miles) from the site. For dose calculation purposes, the residents at this location are characterized as the theoretically highest exposed individual with regard to food consumption, occupancy, and other uses of the areas in the plant vicinity.

Our dose model assumes that this theoretically highest exposed individual may consume the maximum amount of food with all the food being grown or grazed at the residence.

This individual receives shoreline exposure from Little Robbins Slough for 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months per year and consumes 21 kilograms (46 pounds) of fish taken from Little Robbins Slough. This individual receives a submersion dose from noble gases and dose from inhaled radioactive particulates, radioiodines, and tritium. This hypothetical adult is assumed to consume 64 1-1 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Summary and Introduction kilograms (140 pounds) of vegetables grown at the residence and consumes 1 10 kilograms (240 pounds) of meat from livestock grazed at the residence.

This estimated total body dose is calculated using models and exposure pathways described in our Offsite Dose Calculation Manual for a hypothetical individual offsite.Other dose estimates for Members of the Public on-site are listed in the report using exposure pathways not addressed by standard dose calculation methods.Doses from releases to the environment at the South Texas Project Electric Generating Station have historically been and continue to be well below regulatory limits as shown in the following figure. A large fraction of the Total Body Dose was due to carbon-14 reported in gaseous effluents.

In previous years carbon-14 was not reported.

Members of the public received negligible additional radiation due to the operation of the South Texas Project. This Radioactive Effluent Release Report summarizes the data describing the radioactive liquid and gaseous releases from the South Texas Project Electric Generating Station during 2010. The radioactive effluents from the South Texas Project are effectively monitored and controlled in accordance with regulatory requirements.

FIGURE 1-2 THEORETICAL TOTAL BODY DOSE FOR ALL PATHWAYS5 0.260 ___________

_________0.240 1% of REGULATORY LIMIT (251 0.200 millirem) 40C0FR19O0 0.1800 E0.160 E 0.140 20.120=0.020 AJ E0.1000-19419096 9719 99 002000080320000 0620 20 0921 0.060 _ __ _ __ _ __ _ _ 0.027_ __ __ 0.2 YEAR Liquid and gaseous discharges from the South Texas Project are continuously monitored for radioactive content. Samples are also collected from ventilation systems and liquid discharges and analyzed for radioactivity.

The sample and analysis methods are verified and augmented using an environmental laboratory.

Radioactivity monitors continuously sample the ventilation exhaust systems. On the liquid discharge lines, radioactivity monitors automatically divert or isolate liquid effluents if the radioactivity is higher than expected.

These monitors are also equipped with remote alarm indications in the control rooms and health physics offices.I Prior to and during power operation, the South Texas Project is required to evaluate radioactive material in the environment.

We are committed to sampling and analyzing environmental samples for radioactivity to3 support our Radiological Environmental Monitoring Program. The results of these environmental samples are reported in our Annual Environmental Operating Report. These environmental measurements affirm the accuracy of our sampling and analysis program.I The radiation monitors, and the sampling and analysis program, provide an accurate determination of the type and quantity of radioactive materials released in plant effluents.

Liquid effluents are directed to the Main Cooling Reservoir that is located entirely within the site boundary.

The South Texas Project continues to 1-21 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Summary and Introduction aggressively pursue the reduction of radioactive material in liquid effluents consistent with prudent industry practices.

Each year, the effluent monitoring results are summarized in this report and a hypothetical radiation dose to the population in the surrounding area is calculated based on gaseous radioactive effluents, meteorological conditions and liquid radioactive effluents.

The hypothetical dose assumes credible paths for radioactive material to reach a member of the public, such as consumption of vegetables from a garden, fish from the river, inhalation, and direct exposure.

The highest potential hypothetical dose to an individual at the site boundary was calculated to be less than I millirem or approximately an additional day and a half of radiation exposure from natural radiation sources. The information presented in this report demonstrates that plant operation is consistently controlled to ensure that radioactive effluents remain below regulatory limits and to ensure protection of the public and the environment.

1-3 RAflIOACTIVP FFP~ !II2NJTRFT PA'U R12PflRT 9010 Sfl JTRI PROIICI'T Summary and Introduction INTRODUCTION This Radioactive Effluent Release Report is submitted for the period January 1, 2010, through December 31, 2010, in accordance with Appendix A of License Nos. N PF-76 and NPF-80, Technical Specifications and the Offsite Dose Calculation Manual.A single submittal is made for both units combining those sections that are common. Separate tables of releases and release totals are included where separate processing systems exist.This report includes an annual summary of hourly meteorological measurements taken during each quarter. This data appears as tables of wind direction and wind speed by atmospheric stability class. All assessments of radiation doses are performed in accordance with the Offsite Dose Calculation Manual.Minimal quantities of radioactivity were released during 2010. Liquid effluents are discharged to the on-site Main Cooling Reservoir and subsequently released offsite. The radioactivity released in liquids beyond the site boundary was estimated using the South Texas Project Electric Generating Station Offsite Dose Calculation Manual. Solid radioactive waste is shipped offsite for disposal.

Table 1-1 lists a brief summary of the radioactive effluents and solid waste attributable to the station.Table 1-1 TYPE OF EFFLUENT TYPE DESTINATION VOLUME CUBIC CURIES RADIOACTIVE METER MATERIAL NOBLE GAS GAS OFFSITE 6.OE+09(2) 3.3E+01 PARTICULATE AND GAS OFFSITE 6.OE+09(2) 1.8E-03 IODINES TRITIUM & GAS OFFSITE 6.OE+09(2) 8.8E+01 C ARB ON -14 TRITIUM LIQUID OFFSITE 4.8E+06(3) 2.8E+02(5 7 FISSION AND ACTIVATION LIQUID OFFSITE 4.8E+06(3) 1.8E-04(')

PRODUCTS TRITIUM LIQUID ON-SITE 3.OE+04(4) 2.2E+03 FISSION AND ACTIVATION LIQUID ON-SITE 3.OE+04(4) 2.6E-02 PRODUCTS")

SPENT RESINS AND SOLID FOR BURIAL O.OE+00 O.OE+00 FILTERS DRY COMPRESSIBLE SOLID FOR BURIAL 9.4E+01 6.6E-01 WASTE OTHER WASTE (LOW LEVEL SECONDARY SOLID FOR BURIAL 6.48E+01 1.3E-04 RESIN, AND SLUDGE)(')Excludes dissolved and entrained gases. 4)Total volume of liquid radioactive effluents discharged 12)Unit Vent Release Volume for Units I and 2. to the MCR.(3)Estimated MCR seepage to identified receptors.

(5)Reference ODCM, Table B4-1 for Matagorda Bay.I I I I I I I U I N I 1 V I I I I I I I Iritium was the largest contributor to the ottsite closes trom radioactive liquid ettluents.

I he ottslte doses are well below any regulatory limit and significantly less than the average annual radiation exposure to people in the United States from all sources (620 millirem).

1-4 D A FFFT T IFKIT RFI D Af ICACTIX A TIV EFLET 0121 1A'Z1 REPQRlT 2() 1Ifl SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal Supplemental Information for Effluent and Waste Disposal 2-1 I RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal Supplemental Information for Effluent and Waste Disposal The South Texas Project Electric Generating Station is located on 49,500,000 square meters (12,220 acres) in Matagorda County, Texas, approximately 24,000 meters (15 miles) southwest of Bay City along the west bank of the Colorado River. The South Texas Project is currently owned by NRG South Texas LP, the City Public Service Board of San Antonio (CPS), and the 3 City of Austin Texas (GOA) as tenants in common. The Houston Lighting & Power Company was the original project manager of the South Texas Project and was responsible for the engineering, design, licensing, construction, startup, and initial operation of the the two unit facility.

In 1997, the STP Nuclear Operating Company, assumed operational control South Texas Project and responsibility for implementation of the Radioactive Effluent Control Program.The South Texas Project has two Westinghouse pressurized water reactors.

The nominal net electrical capacity of each unit is 1,250 megawatts-electric (MWe). Unit I received a low-power testing license on August 21, 1987, obtained initial criticality on March 8, 1988, and was declared commercially operational on August 25, 1988. Unit 2 received a low-power testing license on December 16, 1988, obtained initial criticality on March 12, 1989, and was declared commercially operational on June 19, 1989. The South Texas Project initiated project activities in 2008 to pursue renewal of the operating licenses for Units I and 2 from the Nuclear Regulatory Commission (NRC). The license renewal application was submitted to the Nuclear Regulatory Commission in October of 2010 to request authorization to operate STP, Units I and 2, for an additional 20 years beyond the period specified in the current licenses.

The Nuclear Regulatory Commission determined that the South Texas Project submittal was sufficient to enable them to undertake a review of the application.

The Nuclear Regulatory Commission review process is intended to ensure that the plant's original design and current conditions and programs can allow the facility to continue operating safely beyond its original license. The combined units currently produce enough electricity to serve more than two million homes and businesses throughout Texas. With nearly 1,200 baseline employees, the STP Nuclear Operating Company is the largest employer and source of revenue for Matagorda County.Regulatory Limits Fission and Activation Gases The air dose due to noble gases released in gaseous effluents from each unit to areas at and beyond the Site Boundary shall be limited to the following:

During any calendar quarter: Less than or equal to 5 millirads for gamma radiation and less than or equal to 10 millirads for beta radiation, and During any calendar year: Less than or equal to 10 millirads for gamma radiation and less than or equal to 20 millirads for beta radiation.

lodines and Particulates, Half-Lives

> 8 days The dose to a Member of the Public from Iodine-131, Iodine-133, tritium, and all radionuclides in particulate form with half-lives greater than eight days in gaseous effluents 2-2 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal released, from each unit, to areas at and beyond the Site Boundary shall be limited to the following:

During any calendar quarter: Less than or equal to 7.5 millirems to any organ; and During any calendar year: Less than or equal to 15 millirems to any organ.Liquid Effluents The dose or dose commitment to a Member of the Public from radioactive materials in liquid effluents released from each unit to Unrestricted Areas shall be limited to: During any calendar quarter: Less than or equal to 1.5 millirems to the whole body and to less than or equal to 5 millirems to any organ; and During any calendar year: Less than or equal to 3 millirems to the whole body and to less than or equal to 10 millirems to any organ.Effluent Concentrations Limits Gaseous Effluents The dose rate due to radioactive materials released in gaseous effluents from the site to areas at and beyond the Site Boundary shall be limited to the following:

For noble gases: Less than or equal to 500 millirems/year to the whole body and less than or equal to 3000 millirems/year to the skin; and For Iodine-I 31, Iodine-I133, tritium and all radionuclides in particulate form with half-lives greater than eight days: Less than or equal to 1500 millirems/year to any organ.Liquid Effluents The concentration of radioactive material released in liquid effluents to Unrestricted Areas shall be limited to 10 times the concentrations specified in I OCFR, Part 20, Appendix B, Table 11, Column 2, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.OE-04 microcurie/milliliter total activity.Avera2e Energy (Million Electron Volts/Disintegration)

The Average Energy (or E-bar) shall be the average (weighted in proportion to the concentration of each radionuclide in the reactor coolant at the time of sampling) of the sum of the average beta and gamma energies per disintegration for the isotopes other than lodines, with half-lives greater than 15 minutes, making up at least 95% of the total non-iodine activity in the coolant. The following average energy values are based on grab sample analyses from each reactor coolant system with both samples being collected during August 2010.2-3 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal Reactor Coolant Liquid including tritium, fission products (excluding radioiodines), and corrosion and activation products E-bar (Million Electron Volts/Disintegration) 0.074 Unit I 0.092 Unit 2 The average energy (E-bar) values of the radionuclide mixture in gaseous releases of fission and activation gases are based on noble gases released during the reporting period.Gaseous Effluents only Noble Gases E-bar (Million Electron Volts/Disintegration) 0.72 Unit I 0.34 Unit 2 1 Measurement and Approximations of Total Activity 0 The following discussions detail the methods used to measure and approximate total activity for the following:

Gaseous Effluents:

Fission and Activation Gases, Tritium, lodines and Particulates Liquid Effluents:

Fission and Activation Products, Tritium, Dissolved and Entrained Gases Tables A3-1 and A4-1 of the South Texas Project Electric Generating Station Offsite Dose I Calculation Manual give sampling frequencies and lower limit of detection requirements for the analysis of liquid and gaseous effluent streams.Gaseous Effluents Analytical Methods For Gaseous Releases from the Reactor Containment Building 3 Monthly pre-release grab samples are collected from the plant Reactor Containment Building atmosphere.

These samples are analyzed on a Gamma Spectroscopy System utilizing high purity germanium detectors for noble gas, iodine and particulate activity.

Tritium specific radioactivity is measured using Liquid Scintillation Counting techniques.

The radionuclide concentrations obtained are used in conjunction with the gross noble gas !release rate monitoring data collected by the radiation monitoring system to estimate the release rate of each radionuclide in the effluent streams. The noble gas release rate data collected by the unit vent radiation monitor is quantified and reported as continuous mode of release. The data from the unit vent radiation monitor in conjunction with the grab sample results of the Reactor Containment Building atmosphere are used to quantify the radioactive material released.Analytical Methods For Continuous Gaseous Releases Periodic noble gas and tritium grab samples are taken from the continuous release points such as the Unit Vent. Continuous sampling for particulates and iodine is also performed on effluent streams. These samples are analyzed for tritium and gamma radionuclides, as 2-4 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal described above for gaseous releases.

Strontium-89, Strontium-90, and gross alpha analyses were performed by the on-site Radiological Services Laboratory.

Noble gas quantification is performed by the plant radiation monitoring system using noble gas grab sample results and the gross noble gas release rate monitor.Secondary system liquid grab samples in conjunction with the mass of the secondary coolant lost are used for quantifying secondary steam releases.

The radioactive material in the steam is based on grab sample results of the secondary liquid. The secondary liquid is analyzed for gamma emitters and tritium.Liquid Effluents Analytical Methods For Liquid Releases Liquid batch releases include waste liquid treated by the liquid waste processing system and secondary system chemical regeneration waste. Liquid effluents resulting from primary to secondary leakage or other plant operations are continuously monitored and are tracked as continuous releases.

For batch releases, representative pre-release grab samples are taken and analyzed in accordance with Table A3-1 of the Offsite Dose Calculation Manual. For continuous releases, representative samples are collected weekly and analyzed.

Radionuclide analyses are performed using a Gamma Spectroscopy System. Aliquots of each pre-release batch sample are composited in accordance with the requirements in Table A3-1 of the Offsite Dose Calculation Manual. Tritium concentrations are determined using Liquid Scintillation Counting techniques.

Dissolved and entrained gas concentrations are determined by counting grab samples on the Gamma Spectroscopy System. Strontium-89, Strontium-90, gross alpha, and Iron-55 determinations are performed by the on-site Radiological Services Laboratory.

The radionuclide concentrations obtained are used with the total volume for each batch release.Batch Releases Liquid and gaseous summaries are compiled from permits generated using a computer-based effluent management system and plant procedures.

Liquid batch releases are accounted for by individual permits. Gaseous batch releases are accounted for by monthly permits and consist of reactor containment purges for the purpose of reducing radioactive material concentrations.

Batch times represent the actual period of releases and the periods that the purge valves were open.2-5 D A rn 12121T I 121 IZACCI DUCOnflT 1)11 QnI ITUI T1VYAQ Dn1IIF1T Supplemental Information for Effluent and Waste Disposal Liquid (Unit 1)Liquid (Unit 1) Quarter 1 Quarter 2 Quarter 3 Quarter 4 a. Number of batch releases 14 9 21 15 b. Total time period for batch 881 554 1374 945 releases (minutes) 881554137_94

c. Maximum time period for a 69 67 116 69 batch release (minutes) 69_67_116_6

d. Average time period for 63 62 65 63 batch releases (minutes) 63_62 65_63 e. Minimum time period for a 60 54 55 47 batch release (minutes)

J Gaseous (Unit 1)Gaseous (Unit 1) I Quarter [ Quarter 2 Quarter 3 Quarter 4 a. Number of batch releases 0 0 0 0 b. Total time period for batch releases (minutes) 0 0 0 0 c. Maximum time period for a batch release (minutes) 0 0 0 0 d. Average time period for batch releases (minutes) 0 0 0 0 e. Minimum time period for a batch release (minutes) 0 0 0 0 1 I U I I I I I I I I I U£I I I I I Liquid (Unit 2)Liquid (Unit 2) Quarter 1 Quarter 2 Quarter3 Quarter4 a. Number of batch releases 24 19 9 24 b. Total time period for batch 1427 1145 535 1455 releases (minutes) 147_14_55_45

c. Maximum time period for a 64 64 64 64 batch release (minutes) 64_64_64_64

d. Average time period for 59 60 59 61 batch releases (minutes) 59_60_59_61

e. Minimum time period for a 41 47 53 47 batch release (minutes)

I 2-6 D A FTn A ("FIXIF VýrýF; I I TMFF DL71 F A QF7 VUDnDr In In Cn"' U =TL ArVA DDnTCýýP D A FlIC~ACTl~Il2 1212121 I TI2XIT D121 12AC12 D12DC1DT 1(1 VCU TTU TI2VAQ DDRI12flT Supplemental Information for Effluent and Waste Disposal Gaseous (Unit 2)Gaseous (Unit 2) Quarter 1 Quarter 2 1 Quarter 3 1 Quarter 4 a. Number of batch releases 2 7 0 0 b. Total time period for batch 5880 40440 releases (minutes) 0 0 c. Maximum time period for a 3120 13800 batch release (minutes) 0 0 d. Average time period for batch 2940 5777 releases (minutes) 290 57 0 0 e. Minimum time period for a 2760 1020 batch release (minutes) 1 0 0 Abnormal (Unplanned)

Releases No abnormal releases occurred during this reporting period.Estimate of Total Error Estimate of Error for Liquid Effluents The maximum error associated with volume and flow measurements, based upon plant calibration practice, is estimated to be + 1.27%. The error associated with the flow measurement is small in relation to the counting uncertainty of the radionuclide concentration analysis.The average uncertainty associated with counting measurements is 10% or less at the 95%confidence level.The error associated with dilution volume is estimated to be + 10%.Estimate of Error for Gaseous Effluents The maximum error associated with monitor readings, sample flow, vent flow, sample collection, monitor calibration and laboratory procedures are collectively estimated to be: Fission and Activation Gases Low Activity (less than 10 microcurie per second) + 100%Fission and Activation Gases High Activity (greater than or equal to 10 microcurie per second)lodines+ 20%+ 25%+ 25%+ 50%Particulates Tritium The average uncertainty associated with counting measurements is 10% or less at the 95%confidence level for fission and activation gases, iodines, particulates and tritium.2-7 I RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Estimate of Error for Solid Radioactive Waste Supplemental Information for Effluent and Waste Disposal The error associated with determining the volume of solid radioactive waste shipments is 3 estimated to be + 1%. The error associated with determining the filter media, spent primary resins, and spent secondary resins radioactivity and radioactivity from other solid radioactive waste shipments is estimated to be within a factor of two of the real value and is due 3 primarily to waste stream sampling uncertainty.

The error associated with determining the radioactivity of dry active solid radioactive waste shipments is estimated to be within a factor of three of the real value. I Solid Waste Shipments A total of seventeen shipments of radioactive filter media, spent resins, dry active and other I wastes were made during the reporting period. A summary of the data is provided in Section 6, Solid Waste and Irradiated Fuel Shipments.

This data is based upon waste generated from units one and two.Radiological Impact on Man The data for the period January 1, 2010, through December 31, 2010, is provided in the Dose Accumulation (Section 7) and the Summary of Direct Radiation Table 8-1 (Section 8). The following dilution factors and dilution water flows were used for assessing the radiation doses due to radioactive liquid effluents released to unrestricted areas.Receptor Location ODCM"'l Dilution Water Flow Dilution Water Dilution Water Dilution Factor Cubic Feet/Second Flow Liters/Year Flow Liters/Quarter Colorado River 1.00E+00 6.OOE+02 5.36E+1 I 1.34E+1 I Matagorda Bay 1.63E+02 9.78E+04 8.73E+13 2.18E+13 Little Robbins 3.05E-02 1.83E+01 1.63E+10 4.08E+09 Slough Area (1) Offsite Dose Calculation Manual factor The dilution water flow used to estimate the individual dose due to ingestion of saltwater fish and saltwater invertebrates (shrimp) harvested from the Colorado River was 5.36E+1 1 liters per year for the years of 1989 through 2010. The dilution water flow used to estimate the individual dose due to ingestion of saltwater fish and saltwater invertebrates harvested from the Matagorda Bay was 8.73E+13 liters per year for the years of 1993 through 2010 as the result of a diversion channel that routes the Colorado River into Matagorda Bay. The dilution water flow used to estimate the individual dose due to ingestion of freshwater fish from the Little Robbins Slough Area was 1.63E+10 liters per year for the years 1989 through 2010. These dilution water flows were also used for estimating individual dose due to shoreline deposits.

The radioactive material reported in the Liquid Effluent tables is the amount released to the Main Cooling Reservoir and does not contribute to dose until the radioactive material is released to unrestricted areas. In order to estimate the doses due to liquid effluents, the radioactive material reported must be adjusted by the values listed in the Offsite Dose Calculation Manual, Table B4-1, "Radionuclide Fractions N(i), Reaching Off-site Bodies of Water".2-8 I U I I I I I I I I RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal Meteoroloigical Data The 2010 meteorological data is presented in the form of joint frequency tables. Each quarter contains eight tables, one for each stability class and one for all classes combined.A second set of joint frequency tables is provided for time periods when the reactor containment building fans were operating to remove radioactive material from the containment for personnel protection reasons. These containment purges are classified as batch releases.Lower Limit of Detection The Lower Limit of Detection (an a priori limit) is defined as the smallest concentration of radioactive material in a sample that will yield a net count above system background that will be detected with 95% probability, and only a 5% probability of falsely concluding that a blank observation represents a "real" signal. A zero (0) value in the attached tables indicates no activity detected.Dose to Member of the Public Dose to Member of the Public from Direct Radiation Outside the Site Boundary The Offsite Dose Calculation Manual includes the direct radiation from plant structures as a component to the dose to a hypothetical, highest exposed Member of the Public located off site due to plant operations.

The Offsite Dose Calculation Manual allows measurements made near the plant structures to be used in these calculations following suitable adjustments for distance and exposure time. In 2010, Thermoluminescent Dosimeters were placed along the protected area fence or the concrete intrusion barriers surrounding Units 1 and 2 of the South Texas Project, on the fence of the Onsite Staging Facility (Outside Storage), along the walls of OSF Warehouse D, and around the Old Steam Generator Storage Facility as pictured in Figure 8-1 of Section 8. The results of these measurements are summarized in Table 8-1 of Section 8. The table shows that in 2010, Thermoluminescent Dosimeter measurements were typical of historical background readings.In accordance with the ODCM, the dose due to direct radiation can be estimated taking the highest TLD measurement, less background, and correcting for the distance to the site boundary using Dosedirect

= TLD * (PA)2 / (RD)2 Where TLD = background corrected TLD annual dose, mR/yr PA = distance from source of radiation to the TLD location, meters RD = distance from the source of radiation to the closest site boundary, meters 2-9 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal The TLD average dose rate is the average of the four quarterly values for the highest location less the quarterly average background at the site boundary.

The highest average TLD dose rate was 52.4 mR/quarter for station #07 which is located in the vicinity of the Units I and 2 old reactor vessel heads stored in the Unit 2 radioactive waste processing yard, as shown in Figure 8-1. The value for TLD may be calculated as shown below where the historical site boundary background of 15.4 mR/quarter is used to find the net rate attributable to waste stored onsite.TLD = 52.4 -15.4 = 37 mR/quarter or TLD = (37 mR/quarter)

(4 quarters/yr)

= 148 mrem!yr assuming a mR is about equal to a mrem The approximate distances PA and RD are estimated using field measurements and global positioning satellite technology.

The total dose to a hypothetical member of the public at the I site boundary could be calculated as below: Dosedirect

= (148 mrem/yr) * (106meters) 2 / (1600 meters)2 = 0.650 mrem/yr I This assumes someone is positioned permanently at the fence East of the Units. A real person might traverse this area twice daily (to and from work) for a total exposure time of 3 Exposure time (hypothetical person) = (250 work days per year) * (1 minutes per trip) *(2 trips per day)Exposure time (hypothetical person) 500 minutes = 0.00095 yr Dosedirect

= 0.650 mrem/yr

0.00095 yr = 0.00062 mrem in 2010 In summary, a realistic dose of 0.00062 mrem was possible to a member of the public offsite in 2010 although a hypothetical maximum annual dose rate of 0.650 mrem/yr was calculated at the nearest offsite location.

I Dose to Member of the Public from Direct Radiation Inside the Site Boundary A hypothetical Member of the Public inside the site boundary but outside the protected area fence could receive less than one millirem from direct radiation.

The most exposed employee on site who is also a member of the public would be a grounds keeper whose job required him to work in the vicinity of the Units I and 2 old reactor vessel heads stored in the I Unit 2 radioactive waste processing yard during 2010. If such an individual worked 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months once a quarter at the fence where the dose rate was highest, their direct radiation dose could be calculated as follows: '3 Dose (mrem) = 40 * [(41.3-15.4)+(65.9-15.4)+(56.9-15.4)+(45.3-15.4)]

/ 365 / 24 = 0.68 where 40 = 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months per quarter times four quarters 41.3 = average dose rate in first quarter, mrem/quarter 65.9 = average dose rate in second quarter, mrem/quarter 3 56.9 = average dose rate in third quarter, mrem/quarter 45.3= average dose rate in fourth quarter, mrem/quarter 2-10 I RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal 15.4 = average pre-operation dose rate, mrem/quarter 365 = days in a year 24 = hours per day Hence, in 2010 a hypothetical member of the public with the highest exposure to direct radiation received about 0.68 mrem from direct radiation.

Dose to Member of the Public from Direct Radiation and Radioactive Effluents Inside the Site Boundary A hypothetical Member of the Public outside the protected area fence but inside the site boundary could receive approximately 0.13 millirem from radioactive effluents due to inhalation and immersion.

This dose plus the direct radiation dose would yield 0.81 millirem, a small fraction of the 10 C.F.R. §20.1301 annual limit.Dose to Member of the Public from Radioactive Effluents Outside the Site Boundary using ODCM Exposure Pathways During 2010, the estimated total body dose to a hypothetical Member of the Public with the highest probability for exposure from radioactive effluents and direct radiation was 0.023 millirem.

This total represents approximately 0.09% of the limits of 40 C.F.R. §190. Based on our 2010 Land Use Census, real individuals reside in the West by Southwest Sector, approximately 4,000 meters (2.5 miles) from the site. For dose calculation purposes, the residents at this location are characterized as the theoretically highest exposed individual with regard to food consumption, occupancy, and other uses of the areas in the plant vicinity.Our dose model assumes that this theoretically highest exposed individual may consume the maximum amount of food with all the food being grown or grazed at the residence.

This individual receives shoreline exposure from Little Robbins Slough for 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months per year and consumes 21 kilograms (46 pounds) of fish taken from Little Robbins Slough. This individual receives a submersion dose from noble gases and dose from inhaled radioactive particulates, radioiodines, and tritium. This hypothetical adult is assumed to consume 64 kilograms (140 pounds) of vegetables grown at the residence and consumes 110 kilograms (240 pounds) of meat from livestock grazed at the residence.

This estimated total body dose is calculated using models and exposure pathways described in our Offsite Dose Calculation Manual for a hypothetical individual offsite. Other dose estimates for Members of the Public onsite are listed in the report using exposure pathways not addressed by standard dose calculation methods.Dose to Member of the Public from Radioactive Effluents Outside the Site Boundary using Liquid to Gaseous Receptor Exposure Pathways Consistent with normal operation of the units, approximately twenty two hundred curies of tritium were released to the Main Cooling Reservoir during 2010. Since some portion of the tritium released in liquid effluents evaporates from the main cooling reservoir, this section is included to provide an estimate of offsite dose from that gaseous source per section 4.10 of the ODCM. Our main cooling reservoir, with a surface area of about 28,300,000 square meters (7000 acres), is an area source and contributes tritium to the atmosphere.

The atmospheric dispersion factor for the WSW sector at 4000 meters was estimated to be 4.01 E-2-11 I RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Supplemental Information for Effluent and Waste Disposal 07 seconds per cubic meter using the EPA code Iclt3 and 2004 meteorological data. The product of X/Q, tritium released to the MCR, and the dose factor for a population age group (87.9, 91.7, 114.2 or 20.5 millirem-cubic meter per second-curie for age groups adult, teen, I child and infant, respectively) generated an estimated whole body dose of 0.1 millirem for the highest exposed population group, a small fraction of the limits of 40 C.F.R. § 190. i Dose to Member of the Public from Radioactive Effluents including Carbon-14 Carbon-14 has not been previously reported as a radioactive effluent.

Carbon-14 is a naturally occurring isotope of carbon. Carbon-14 is formed naturally in the upper atmosphere I and is also formed in an operating nuclear reactor, primarily through activation of oxygen molecules.

The quantity of carbon-14 produced by operating nuclear reactors is significantly less than that produced naturally or from weapons testing.The NRC published Regulatory Guide 1.21 Revision 1, Measuring, Evaluating, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light- Water-Cooled Nuclear Power Plants in 1974. This regulatory guidance recommends the content and format of this report. This report follows the recommendations of Regulatory Guide 1.21, Revision 1. In 2009 the NRC published revision 2 of Regulatory Guide 1.21 based on a risk-informed perspective for reporting principal radionuclides

.This document recommended methods for estimating and reporting the quantity of carbon-14 released in gaseous effluents.

The quantity of carbon-14 released from each unit was estimated using NUREG-001 7, Calculation of Releases of Radioactive Materials in Gaseous and Liquid Effluents from Pressurized Water Reactors PWR-GALE Code, April 1985. A value of 7.3 curies of carbon-14 was used for each unit. The Semiannual Summation of All Releases by Quarter for All Airborne Effluents found in section 4-2 of this report lists carbon-14 in a similar manner as tritium. In subsequent years, the amount of carbon-14 may be based on measurements in the actual effluents.

ODCM dose factors were used for estimating doses to members of the public and the doses due to carbon-14 are included in the Dose Accumulations, Section 7-1 of this report. EPRI I Report TR-105715, Characterization of Carbon-14 Generated by the Nuclear Power Industry, November 1995 concluded that the molecular form of carbon-14 produced in gaseous effluent is 75 to 90 percent hydrocarbons (primarily methane) with the remainder in I inorganic form (carbon dioxide or carbon monoxide in gas or carbonates in liquid). This report listed the measured molecular forms of carbon-14 in gaseous effluents from two U.S.and six German commercial pressurized water reactors.

The average fraction of inorganic carbon-14 was determined to be 20 percent and the average organic fraction was determined to be 80 percent. The pathway doses were calculated using the average ratio of 1:5 for ingestion pathways, as carbon in the form of hydrocarbons is not absorbed by plants. The 1 radiation doses from STPEGS to the public (including carbon-14) are much lower than regulatory limits and are a very small contributor to the total radiation dose the American public receives each year from natural and manmade sources.2-12 RAflIflACTIVP JZl~iZ1 IIFNT RFI FA'~P R12PORT in1 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Technical Specifications and Offsite Dose Calculation Manual Controls Reporting Requirements Technical Specifications and Offsite Dose Calculation Manual Controls Reporting Requirements 3-1 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Technical Specifications and Offsite Dose Calculation Manual Controls Reporting Requirements Offsite Dose Calculation Manual Changes (reference, Technical Specifications, 6.13) 3 The ODCM was not revised in 2010.Annual Land Use Census (reference, Offsite Dose Calculation Manual Controls, 3.12.2.a) 3 The Land Use Census identified several changes in the nearest residents within five miles.Distances to the nearest residents were changed in the N, NNW; and SSW sectors only. The n Offsite Dose Calculation Manual was revised in 2011 with the distances to these dose pathway receptors being updated. These distances were used for determining the doses to the public.Radioactive Waste Treatment System Design Modification Description (reference, Offsite Dose Calculation Manual Controls, 6.15)A review of the work history for 2010 for the solid, liquid and gaseous waste processing systems I revealed only three minor modifications, none of which affected effluent releases.

DCP 05-5003-2 was implemented to finish abandoning in the Unit I Desuperheating Water Metering Pumps. DCP 05-2560-6 was implemented to add throttle valves to the seal water lines for waste I liquid surge tank pumps I B, 2A, and 2B. Additional modifications were completed to replace the high integrity container (HIC) fill heads in Unit 1 and Unit 2. 3 There were no major modifications installed on these systems in 2010.Inoperable Effluent Monitoring Instrumentation Explanation (reference, Offsite Dose Calculation Manual Controls, 6.9.1.4)For 2010, inoperable liquid effluent monitoring instruments were corrected within the time m specified in Sections 3.3.3.10 of Offsite Dose Calculation Manual Controls.For 2010, inoperable gaseous effluent monitoring instruments were corrected within the time 5 specified in Sections 3.3.3.11 of Offsite Dose Calculation Manual Controls.Gas Storage Tank Curie Limit Violation Description (reference, Offsite Dose Calculation Manual Controls, 6.9.1.4)The Reactor Coolant System Vacuum Degassing System was not used during this reporting period. Therefore, the quantity of radioactive material in the Reactor Coolant System Vacuum Degassing System Storage Tanks did not exceed the limits set forth in Section 3.11.2.6 of Technical Specifications.

3 Unprotected Outdoor Tank Curie Limit Violation Description (reference, Offsite Dose Calculation Manual Controls, 6.9.1.4)There are no Unprotected Outdoor Tanks at South Texas Project Electric Generating Station.Therefore the quantity of radioactive material in any unprotected outdoor tank did not exceed the limit set forth in Section 3.11.1.4 of Technical Specifications.

I 3-2 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Technical Specifications and Offsite Dose Calculation Manual Controls Reporting Requirements Abnormal (Unplanned)

Release Description (reference, Offsite Dose Calculation Manual, 6.9.1.4)No abnormal (unplanned) releases occurred during this reporting period.Radioactive Waste Process Control Program Changes (reference, Technical Specifications, 6.13)There were no changes to the Radioactive Waste Process Control Program during this reporting period.2009 Radioactive Effluent Release Report Change CR 11-6831 documents a typographical error found in the 2009 Radioactive Effluent Release Report. The curie value for other waste (low level secondary resin, and sludge) for table I -I on page 1-4 should be 5.3E-04 curies. In Table A. Solid Waste Shipped Offsite for Burial or Disposal (Not Irradiated Fuel) found on page 6-2 should list 5.3E-04 curies for both shipped and buried for other waste (low level secondary resin, and sludge). On page 6-3, 3. Solid Waste Disposition should include thirteen additional shipments:

3. Solid Waste Disposition:

Number of Shipments Mode of Destination Transportation 3 Truck Allied Waste Industries, Inc. *Gulf West Landfill 2601 South Jenkins Road Anahuac, TX 77514 10 Truck Allied Waste Industries, Inc. *Blueridge Landfill 220 FM 521 Fresno, TX 77545 NOTE:

Shipped per Texas Commission on Environmental Quality exemption to industrial landfill.3-3 RADIOACTIVF FF11 IJFNTRFI FASF RFPO1~T 901f RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Technical Specifications and Offsite Dose Calculation Manual Controls Reporting Requirements INTENTIONALLY LEFT BLANK 3-4 U I I U I U I U I I I I I I II PAfltC~ACT1XJJ~

12F11 II1ThJT R121 EA~J2 R!2PflRT RADOACIV EFLUN SOUTHS TEXAST PROJEC SOUTH TEXAS PROJECT Gaseous Effluents GASEOUS EFFLUENTS 4-1 D A FIItAIACTTUI2 1111 1 II2':TT OIDCT C: A QV DICDFnDT ,)(I I A QnC 11TU TI2VA Q DDCIIJ(OT Gaseous Effluents STP NUCLEAR OPERATING COMPANY SEMIANNUAL SUMMATION OF ALL RELEASES BY QUARTER ALL AIRBORNE EFFLUENTS Unit: 1 Starting : 1-Jan-2010 Ending: 30-Jun-2010 I I I EST. TOT TYPE OF EFFLUENT UNITS QUARTER 1 QUARTER 2 ERROR A. FISSION & ACTIVATION PRODUCTS 1. TOTAL RELEASE CURIES 1.55E+00 3.76E-01 100 2. AVERAGE RELEASE uCi/sec 2.OOE-0I 4.78E-02 RATE FOR PERIOD_3. PERCENT OF LIMIT 2.08E-04 4.98E-05 (9.60E+04 uCi/sec) I B. RADIOIODINES

1. IODINE-131 CURIES O.OOE+00 3.45E-09 25 2. AVERAGE RELEASE uCi/sec 0.OOE+00 4.39E-10 RATE FOR PERIOD _3. PERCENT OF LIMIT 0.00E+O0 1.1OE-06 (4.OOE-02 uCi/sec) _C. PARTICULATES

1. PARTICULATES(HALF-CURIES 4.64E-05 3.96E-05 25 LIVES>8 DAYS) !2. AVERAGE RELEASE uCi/sec 5.97E-06 5.04E-06 RATE FOR PERIOD 3. PERCENT OF LIMIT % .99E-03 1.68E-03 (3.OOE-01 uCi/sec) % 1.99E-03 1.68E-03 4. GROSS ALPHA 4.RADOSSACTIT CURIES 0.OOE+00 O.OOE+00 RADIOACTIVITYi D. TRITIUM 1. TOTAL RELEASE CURIES 9.OOE+00 1.00E+01 50 2. AVERAGE RELEASE uCi/sec 1. 16E+00 1.27E+00 RATE FOR PERIOD _3. PERCENT OF LIMIT 6.43E-04 7.07E-04 (1.80E+05 uCi/sec) j E. CARBON-14

__I. TOTAL RELEASE CURIES 1.90E+00 1.84E+00 None 2. AVERAGE RELEASE uCi/sec 2.44E-01 2.34E-01 RATE FOR PERIOD _3. PERCENT OF LIMIT 3.13E-03 3.OOE-03 (7.8E+03 uCi/sec) % 3.13E-03 3.00E-03 I 4-2 I I R A ni(-)ACTIVF FFFI.11FNTRPT FAPF RFPORT q:fl ITH TIFYAq PR(-IIPCT Gaseous Effluents STP NUCLEAR OPERATING COMPANY REPORT CATEGORY: TYPE OF ACTIVITY: Unit 1 SEMIANNUAL AIRBORNE GROUND LEVEL CONTINUOUS AND BATCH RELEASES.

TOTALS FOR EACH NUCLIDE RELEASED.FISSION GASES, IODINES, AND PARTICULATES REPORTING PERIOD: QUARTER # 1 AND QUARTER # 2 YEAR 2010 1 CONTINUOUS MODE BATCH MODE NUCLIDES UNITS QUARTER 1 QUARTER 2 QUARTER 1 QUARTER 2 RELEASED E FISSION GASES Argon-41 CURIES 2.82E-01 2.05E-01 O.OOE+00 O.OOE+00 Xenon-133 CURIES 1.27E+00 1.71E-01 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 1.55E+00 3.76E-01 O.OOE+00 O.OOE+00 IODINES Iodine- 131 CURIES O.OOE+00 3.45E-09 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES O.OOE+00 3.45E-09 O.OOE+00 O.OOE+00 PARTICULATES Beryllium-7 CURIES 4.49E-05 3.96E-05 O.OOE+00 O.OOE+00 Cobalt-58 CURIES 1.52E-06 O.OOE+00 O.OOE+00 O.OOE+00 Cobalt-60 CURIES 4.32E-09 O.OOE+00 O.OOE+00 O.OOE+00 Chromium-51 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Mercury-203 CURIES 3.28E-09 2.44E-09 O.OOE+00 O.OOE+00 Manganese-54 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Niobium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Selenium-75 CURIES 9.82E-10 1.22E-09 O.OOE+00 0.00E+00 Zirconium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 4.64E-05 3.96E-05 O.OOE+00 O.OOE+00 OTHER Carbon-14 CURIES 1.90E+00 I .84E+00 O.OOE+00 O.OOE+00 Hydrogen-3 (Tritium)

CURIES 9.OOE+00 1.00E+01 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 1.09E+01 1.18E+01 O.OOE+00 O.OOE+00 4-3

'I RAOIOACTIVF FFFI I!fl'JT RFI PASF RFPORT?Irn gCl mIT TPXAg PROlFCT Gaseous Effluents STP NUCLEAR OPERATING COMPANY SEMIANNUAL SUMMATION OF ALL RELEASES BY QUARTER ALL AIRBORNE EFFLUENTS Unit: 1 Starting:

1-Jul-2010 Ending : 31-Dec-20 10 EST. TOT TYPE OF EFFLUENT UNITS QUARTER 3 QUARTER 4 ERROR A. FISSION & ACTIVATION PRODUCTS 1. TOTAL RELEASE CURIES 3.59E-01 4.35E-01 100 2. AVERAGE RELEASE uCi/sec 4.52E-02 5.47E-02 RATE FOR PERIOD 3. PERCENT OF LIMIT 4.7 E-05 5.70E-05 (9.60E+04 uCi/sec)B. RADIOIODINES

1. IODINE- 131 CURIES 4.58E-09 0.OOE+00 25 2. AVERAGE RELEASE uCi/sec 5.76E- 10 0.OOE+00 RATE FOR PERIOD 3. PERCENT OF LIMIT % .44E-06 0.OOE+00 (4.OOE-02 uCi/sec)C. PARTICULATES

1. PARTICULATES(HALF-CURIES 2.30E-05 3.2 1E-05 25 LIVES>8 DAYS)2. AVERAGE RELEASE uCi/sec 2.89E-06 4.04E-06 RATE FOR PERIOD 3. PERCENT OF LIMIT 9.65E-04 I.35E-03 (3.OOE-01 uCi/sec)4. GROSS ALPHA RADIOACTIVITY D. TRITIUM 1. TOTAL RELEASE CURIES 7.69E+00 6.87E+00 50 2. AVERAGE RELEASE uCi/sec 9.68E-0I 8.64E-01 RATE FOR PERIOD 3. PERCENT OF LIMIT 5.38E-04 4.80E-04 (1.80E+05 uCi/sec)E. CARBON- 14 1. TOTAL RELEASE CURIES 1.77E+00 1.78E+00 None 2. AVERAGE RELEASE uCi/sec 2.23E-01 2.24E-01 RATE FOR PERIOD 3. PERCENT OF LIMIT 2.85E-03 2.87E-03 (7.8E+03 uCi/sec)U I I i I I U I I I I i I 3 4-4 I D -A T lTC' i C IfK 17U7ý17T T TCX'rl DE7I CA QU I A I ()Qn"11T TICV A Q DDn'llf'7T A 12'.1C~ ArTIXII2 1212121 1 T12MT D121 12A C12 D12OCIDT 1 A CflI TTU T12V AC DDr~112rT Gaseous Effluents STP NUCLEAR OPERATING COMPANY Unit 1 REPORT CATEGORY:

SEMIANNUAL AIRBORNE GROUND LEVEL CONTINUOUS AND BATCH RELEASES.

TOTALS FOR EACH NUCLIDE RELEASED.TYPE OF ACTIVITY:

FISSION GASES, IODINES, AND PARTICULATES REPORTING PERIOD: QUARTER # 3 AND QUARTER # 4 YEAR 2010 I CONTINUOUS MODE I BATCH MODE NUCLIDES UNITS QUARTER3 QUARTER 4 QUARTER 3 QUARTER 4 RELEASED FISSION GASES Argon-41 CURIES 1.93E-01 2.63E-01 O.OOE+00 O.OOE+00 Xenon-133 CURIES 1.66E-01 1.72E-01 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 3.59E-0I 4.35E-01 0.OOE+00 O.OOE+00 IODINES Iodine- 131 CURIES 4.58E-09 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 4.58E-09 O.OOE+00 O.OOE+00 O.OOE+00 PARTICULATES Beryllium-7 CURIES 2.30E-05 3.21E-05 O.OOE+00 O.OOE+00 Cobalt-58 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cobalt-60 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Chromium-51 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Mercury-203 CURIES 1.12E-09 1.14E-09 O.OOE+00 O.OOE+00 Manganese-54 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Niobium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Selenium-75 CURIES 1.20E-09 1.95E-09 O.OOE+00 O.OOE+00 Zirconium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 2.30E-05 3.2 1E-05 O.OOE+00 O.OOE+00 OTHER Carbon- 14 CURIES 1.77E+00 1.78E+00 O.OOE+00 O.OOE+00 Hydrogen-3 (Tritium)

CURIES 7.69E+00 6.87E+00 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 9.46E+00 8.66E+00 O.OOE+00 O.OOE+00 4-5 R~AnlrcA r'TlxI P1rT1 ITTIMT DP 1 1 rA QI2 DF71I)fJT 1() 1 ()Qnl ITU T17AV DA C rIIrrT Gaseous Effluents STP NUCLEAR OPERATING COMPANY SEMIANNUAL SUMMATION OF ALL RELEASES BY QUARTER ALL AIRBORNE EFFLUENTS Unit: 2 Starting:

l-Jan-2010 Ending: 30-Jun-2010 EST. TOT TYPE OF EFFLUENT UNITS QUARTER1 QUARTER2 ERROR A. FISSION & ACTIVATION PRODUCTS 1. TOTAL RELEASE CURIES 1.02E+01 1.85E+01 100 2. AVERAGE RELEASE uCi/sec 1.31 E+00 2.35E+00 RATE FOR PERIOD 3. PERCENT OF LIMIT % .36E-03 2.451-03 (9.60E+04 uCi/sec)B. RADIOIODINES

1. IODINE-131 CURIES 4.68E-05 1.50E-04 25 2. AVERAGE RELEASE uCi/sec 6.02E-06 1.90E-05 RATE FOR PERIOD 3. PERCENT OF LIMIT % .50E-02 4.75E-02 (4.OOE-02 uCi/sec)C. PARTICULATES

1. PARTICULATES(HALF-CURIES 3.76E-05 1.36E-03 25 LIVES>8 DAYS)2. AVERAGE RELEASE uCi/sec 4.84E-06 1.73E-04 RATE FOR PERIOD 3. PERCENTOFLIMIT 1.61 E-03 5.75E-02 (3.OOE-01 uCi/sec)4. GROSS ALPHA RADIOACTIVITY D. TRITIUM 1. TOTAL RELEASE CURIES 1.48E+01 6.82E+00 50 2. AVERAGE RELEASE uCi/sec 1.90E+00 8.67E-01 RATE FOR PERIOD 3. PERCENT OF LIMIT % .06E-03 4.82E-04 (1.80E+05 uCi/sec)E. CARBON-14

.....1. TOTAL RELEASE CURIES 1.78E+00 1.85E+00 None 2. AVERAGE RELEASE uCi/sec 2.29E-01 2.35E-01 RATE FOR PERIOD 3. PERCENT OF LIMIT 2.94E-03 3.01E-03 (7.8E+03 uCi/sec)I U I i I I I I I I I I I I 4-6 RADIOACTIVE EFFI .ENT REI EASE REPORT 2010)JTH TFfXAq PROIFCT Gaseous Effluents STP NUCLEAR OPERATING COMPANY Unit 2 REPORT CATEGORY:

SEMIANNUAL AIRBORNE GROUND LEVEL CONTINUOUS AND BATCH RELEASES.

TOTALS FOR EACH NUCLIDE RELEASED.TYPE OF ACTIVITY:

FISSION GASES, IODINES, AND PARTICULATES REPORTING PERIOD: QUARTER # 1 AND QUARTER # 2 YEAR 2010 1 CONTINUOUS MODE BATCH MODE NUCLIDES RELES UNITS QUARTER 1 QUARTER2 QUARTER 1 QUARTER 2 RELEASED FQ FISSION GASES Argon-41 CURIES 3.54E-0I 5.58E-01 1.14E+00 O.OOE+00 Krypton-85 CURIES O.OOE+00 O.OOE+00 O.OOE+00 1 .96E-03 Xenon- 131M CURIES O.OOE+00 3.31E-04 O.OOE+00 2.97E-01 Xenon-133 CURIES 8.83E-01 2.89E-0I 7.78E+00 1.73E+01 TOTAL FOR PERIOD CURIES 1.24E+00 8.47E-01 8.92E+00 1.76E+01 IODINES Iodine-131 CURIES 9.36E-06 5.43E-06 3.74E-05 1.44E-04 Iodine-133 CURIES 1.17E-05 O.OOE+00 1.76E-05 1.18E-06 TOTAL FOR PERIOD CURIES 2.1 lE-05 5.43E-06 5.50E-05 1.45E-04 PARTICULATES Beryllium-7 CURIES 2.63E-05 2.12E-05 O.OOE+00 1.26E-05 Cobalt-58 CURIES O.OOE+00 7.04E-06 3.08E-06 3.59E-04 Cobalt-60 CURIES O.OOE+00 3.28E-06 5.48E-07 6.48E-05 Chromium-51 CURIES O.OOE+00 5.54E-06 7.31 E-06 8.42E-04 Mercury-203 CURIES O.OOE+00 3.1OE-09 O.OOE+00 3.OOE-08 Manganese-54 CURIES O.OOE+00 O.OOE+00 O.OOE+00 1.04E-06 Niobium-95 CURIES O.OOE+00 O.OOE+00 3.75E-07 4.19E-05 Selenium-75 CURIES i.71E-09 2.98E-09 O.OOE+00 3.19E-09 Zirconium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 1.24E-06 TOTAL FOR PERIOD CURIES 2.63E-05 3.71E-05 1.13E-05 1.32E-03 OTHER Carbon-14 CURIES 1.69E+00 1.24E+00 9.20E-02 6.05E-01 Hydrogen-3 (Tritium)

CURIES 1.41E+OI 3.37E+00 7.07E-01 3.45E+00 TOTAL FOR PERIOD CURIES 1.58E+01 4.61E+00 7.99E-0I 4.05E+00 4-7 IA ~nT A (rT I/, r irir T TrIT I? l F: A QF DI? UDfDT ,)A11 Cfl IT=V TIVAC Gaseous Effluents STP NUCLEAR OPERATING COMPANY SEMIANNUAL SUMMATION OF ALL RELEASES BY QUARTER ALL AIRBORNE EFFLUENTS Unit: 2 Starting:

1-Jul-2010 Ending : 31-Dec-20 10 EST. TOT TYPE OF EFFLUENT UNITS QUARTER 3 QUARTER 4 ERROR A. FISSION & ACTIVATION PRODUCTS 1. TOTAL RELEASE CURIES 9.89E-01 8.02E-01 100 2. AVERAGE RELEASE uCi/sec 1.24E-01 1.01E-01 RATE FOR PERIOD 3. PERCENT OF LIMIT % .30E-04 1.05E-04 (9.60E+04 uCi/sec)B. RADIOIODINES

1. IODINE-] 31 CURIES 1.66E-08 1.13E-09 25 2. AVERAGE RELEASE uCi/sec 2.09E-09 1.43E- 10 RATE FOR PERIOD 3. PERCENT OF LIMIT 5.23E-06 3.56E-07 (4.OOE-02 uCi/sec)C. PARTICULATES

1. PARTICULATES(HALF-CURIES 3.07E-05 1.79E-05 25 LIVES>8 DAYS)2. AVERAGE RELEASE uCi/sec 3.86E-06 2.25E-06 RATE FOR PERIOD 3. PERCENT OF LIMIT 1.29E-03 7.51 E-04 (3.OOE-01 uCi/sec)4. GROSS ALPHA RDOCIIYCURIES 0.00E+00 0.00E+00 RADIOACTIVITY D. TRITIUM I. TOTAL RELEASE CURIES 5.99E+00 1.22E+01 50 2. AVERAGE RELEASE uCi/sec 7.53E-01 1.54E+00 RATE FOR PERIOD 3. PERCENT OF LIMIT 4.19E-04 8.56E-04 (1.80E+05 uCi/sec)E. CARBON- 14 1. TOTAL RELEASE CURIES 1.81E+00 1.83E+00 None 2. AVERAGE RELEASE uCi/sec 2.28E-01 2.30E-01 RATE FOR PERIOD 3. PERCENT OF LIMIT 2.92E-03 2.95E-03 (7.8E+03 uCi/sec)U I U I I 3 I I U I U I I I I 3 I U I 4-8 D A r1ft-1 A i-mir vcci i ir:xTT Drýt CA 4ZV Or D"D-r In I ()Cf/'l ILjt TUV ý U AE1ICIArrIjt7 12L121 I I2XTT DLI LAQL DI7DRDT ')fl 1(1 Gaseous Effluents STP NUCLEAR OPERATING COMPANY REPORT CATEGORY: TYPE OF ACTIVITY: REPORTING PERIOD: Unit 2 SEMIANNUAL AIRBORNE GROUND LEVEL CONTINUOUS AND BATCH RELEASES.

TOTALS FOR EACH NUCLIDE RELEASED.FISSION GASES, IODINES, AND PARTICULATES QUARTER # 3 AND QUARTER # 4 YEAR 2010 CONTINUOUS MODE I BATCH MODE I NUCLIDES RELEASED FISSION GASES Argon-4 I UNITS QUARTER 3 QUARTER 4 1 QUARTER 3 1 QUARTER 4-Xenon-133 CJURIES 7.16E-01 I 3.02E-01 IO.OOE+OO J OOE-t-O CURIES 2.73E-01 4.99E-01 O.OOE+00 O.OOE+00 CURIFS 9-89E-01 WO1E-01 0_00F+00 I ooO+00 TOTAL FOR PERIOD IODINES Iodine- 131 (CURIES I 1.66E-08 CURIES 9.OOE-08 Iodine- 133 1.13E-09 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 0.OOE+00 1.13F-09 000F+00--

0 00FO+TOTAL FOR PERIOD PARTICULATES Beryllium-7 4 -t Cobalt-58 Cobalt-60 CURIES 0.OOE+00 O.OOE+00 0.OOE+00 0.OOE+00 Chromium-51 CURIES 0.OOE+00 O.OOE+00 0.OOE+00 0.OOE+00 Mercury-203 CURIES 5.43E-10 1.85E-09 0.OOE+00 O.OOE+00 Manganese-54 CURIES 0.OOE+00 0.OOE+00 0.OOE+00 O.OOE+00 Niobium-95 CURIES 0.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 Selenium-75 CURIES 3.49E-09 3.24E-09 0.OOE+00 0.OOE+00 Zirconium-95 CURIES O.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 TOTAL FOR PERIOD CURIES 3.07E-05 1.79E-05 O.OOE+00 0.OOE+00 OTHER Carbon- 14 CURIES 1.81E+00 1.83E+00 0.OOE+00 0.OOE+00 Hydrogen-3 (Tritium)

CURIES 5.99E+00 1.22E+O1 0.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 7.80E+00 1.41E+OI O.OOE+00 0.OOE+00 4-9 I~An!nArTIvJ P~T1 rlPI.JT Rfl V~A'~1Z RJZPflJ~T 9nAITT1-l TT2YA'. PI~fc11rCT RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Gaseous Effluents STP NUCLEAR OPERATING COMPANY Unit 1 plus 2 Total REPORT CATEGORY:

ANNUAL AIRBORNE GROUND LEVEL RELEASES.TOTALS FOR EACH NUCLIDE RELEASED.

FOR ALL OF 2010 NUCLIDES UNIT 1 UNIT 2 TOTAL RELEASED 2010 2010 2010 FISSION GASES Argon-41 CURIES 9.43E-01 3.07E+00 4.01E+00 Krypton-85 CURIES O.OOE+00 1.96E-03 1.96E-03 Xenon-131M CURIES O.OOE+00 2.98E-01 2.98E-01 Xenon-133 CURIES 1.78E+00 2.70E+O1 2.88E+01 TOTAL FOR PERIOD CURIES 2.72E+00 3.04E+O1 3.31 E+O1 IODINES Iodine-131 CURIES 8.03E-09 1.96E-04 1.96E-04 Iodine-133 CURIES O.OOE+00 3.06E-05 3.06E-05 TOTAL FOR PERIOD CURIES 8.03E-09 2.27E-04 2.27E-04 PARTICULATES Beryllium-7 CURIES 1.39E-04 1.04E-04 2.43E-04 Cobalt-58 CURIES 1.53E-06 3.73E-04 3.75E-04 Cobalt-60 CURIES 4.32E-09 6.86E-05 6.86E-05 Chromium-51 CURIES O.OOE+00 8.55E-04 8.55E-04 Mercury-203 CURIES 7.99E-09 3.55E-08 4.34E-08 Manganese-54 CURIES O.OOE+00 1.04E-06 1.04E-06 Niobium-95 CURIES O.OOE+00 4.23E-05 4.23E-05 Selenium-75 CURIES 5.35 E-09 1.46E-08 1.99E-08 Zirconium-95 CURIES O.OOE+00 1.24E-06 1.24E-06 TOTAL FOR PERIOD CURIES 1.40E-04 1.45E-03 1.59E-03 OTHER Carbon-14 CURIES 7.28E+00 7.25E+00 1.45E+O1 Hydrogen-3 (Tritium)

CURIES 3.35E+01 3.98E+O1 7.33E+01 TOTAL FOR PERIOD CURIES 4.08E+01 4.71E+01 8.78E+01 I I I I I U I I Ui I I I I I I 4-10 D Ar'unArTI~II2

~I~I III2NTT u~i 1A'Z12 D12DCIPT')fl 1(1 D A n1n A f--rTVE EFFLI TENT RELEA'zu I? Tj)nl?-r In 1 A SOUTH TEXAS PROJECT Liquid Effluents LIQUID EFFLUENTS 5-1 D A nin A ("FI V tX121 ITI JTXV V L72 1A QF D FDCDT Sfilf qCl 1THl TI2YA'q PRnIhTfrT Liquid Effluents STP NUCLEAR OPERATING COMPANY SEMIANNUAL SUMMATION OF ALL RELEASES BY QUARTER ALL LIQUID EFFLUENTS Unit: I Starting : 1-Jan-2010 Ending: 30-Jun-2010 EST. TOT TYPE OF EFFLUENT UNITS QUARTERI QUARTER_2 ERROR A. FISSION & ACTIVATION PRODUCTS 1. TOTAL RELEASE (NOT INCLUDING TRITIUM, GASES, CURIES 2.525E-03 2.933E-03 10 ALPHA)2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 2.227E-09 3.084E-09 PERIOD 3. PERCENT OF EC* LIMIT % 3.306E-03 3.252E-03 (FRACTIONAL)

B. TRITIUM 1. TOTAL RELEASE CURIES 1.919E+02 3.206E+01 10 2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 1.692E-04 3.371E-05 PERIOD 3. % OF LIMIT (1.00E-02 uCi/mL) % 1.693E+00 3.371E-01 C. DISSOLVED AND ENTRAINED GASES I. TOTAL RELEASE CURIES 5.429E-04 2.170E-05 10 2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 4.788E- 10 2.282E-1 I PERIOD 3. PERCENT OF LIMIT (2.OOE-04

% 2.395E-04 1.141E-05 uCi/mL)D. GROSS ALPHA RADIOACTIVITY

1. TOTAL RELEASE CURIES 0.OOOE+00 0.OOOE+00 10 E. WASTE VOL RELEASED 1. TOTAL PRE-DILUTION VOLUME LITERS 2.972E+06 3.140E+06 I 2. BATCH PRE-DILUTION VOLUME LITERS 7.903E+05 4.680E+05 I F. VOLUME OF DILUTION WATER LITERS 1.131 E+09 9.479E+08 10 USED***EC= Effluent Concentration

"*"Volume of dilution water used" means the volume of water circulated through the main condenser during the actual time of release. Liquid effluent releases ultimately dilute into the volume of the onsite main cooling reservoir and then into offsite water bodies as described in Section 2, subsection Radiological Impact on Man of this report.5-2 I I I I I I I I I I I i I I I R A FlIO)ACTlVP FFFI I IFNT RPI FANF RFPO)RT -r O II FA RJ?2)I1(Il TH TFX A',q PR ()I FCT Liquid Effluents STP NUCLEAR OPERATING COMPANY Unit 1 REPORT CATEGORY:

SEMIANNUAL LIQUID CONTINUOUS AND BATCH RELEASES.

TOTALS FOR EACH TYPE OF ACTIVITY:

ALL RADIONUCLIDES REPORTING PERIOD: QUARTER # I AND QUARTER #NUCLIDE RELEASED.2 YEAR 2010 1 CONTINUOUS RELEASES I BATCH RELEASES NUCLIDES UNITS QUARTER 1 QUARTER 2 QUARTER 1 [QUARTER 2 RELEASED ALL NUCLIDES Beryllium-7 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cobalt-57 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cobalt-58 CURIES O.OOE+00 O.OOE+00 1.77E-04 1 .99E-04 Cobalt-60 CURIES O.OOE+00 O.OOE+00 4.1OE-04 6.57E-04 Chromium-51 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cesium-134 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cesium-137 CURIES O.OOE+00 O.OOE+00 1.79E-04 4.72E-05 Iron-55 CURIES O.OOE+00 O.OOE+00 7.48E-04 1.52E-03 Iron-59 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tritium CURIES 3.33E-02 5.44E-02 1.92E+02 3.20E+01 Iodine- 131 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Iodine-133 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Krypton-85 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Krypton-85M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Manganese-54 CURIES O.OOE+00 O.OOE+00 4.16E-04 3.07E-04 Sodium-24 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Niobium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 6.54E-06 Antimony-122 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Antimony-124 CURIES O.OOE+00 O.OOE+00 5.52E-05 1.11 E-05 Antimony-125 CURIES O.OOE+00 O.OOE+00 3.23E-04 1.81 E-04 Antimony-126 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tin-i 13 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tin-I 17M CURIES O.OOE+00 O.OOE+00 2.21 E-05 O.OOE+00 Tellurium-125M CURIES O.OOE+00 O.OOE+00 1.96E-04 O.OOE+00 Xenon-131M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Xenon-133 CURIES O.OOE+00 O.OOE+00 5.43E-04 2.17E-05 Xenon-133M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Xenon-135 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Zinc-65 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 3.33E-02 5.44E-02 1.92E+02 3.20E+O1 5-3 RADIOACTIVE EFFFI JENT REIEASE RFPORT 2010 SOTI IT!-! TFYAS PRO IECT Liquid Effluents STP NUCLEAR OPERATING COMPANY SEMIANNUAL SUMMATION OF ALL RELEASES BY QUARTER ALL LIQUID EFFLUENTS Unit: 1 Starting:

1-Jul-2010 Ending : 31-Dec-20 10 EST. TOT TYPE OF EFFLUENT UNITS QUARTER3 QUARTER4 ERROR A. FISSION & ACTIVATION PRODUCTS 1. TOTAL RELEASE (NOT INCLUDING TRITIUM, CURIES 3.783E-03 2.676E-03 10 GASES, ALPHA)2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 1.606E-09 1.670E-09 PERIOD 3. PERCENT OF EC* LIMIT 2.521E-03 3.26 E-03 (FRACTIONAL)

B. TRITIUM 1. TOTAL RELEASE CURIES 3.932E+02 2.090E+02 10 2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 1.669E-04 1.305E-04 PERIOD 3. % OF LIMIT (1.OOE-02 uCi/mL) % 1.669E+00 1.305E+00 C. DISSOLVED AND ENTRAINED GASES 1. TOTAL RELEASE CURIES 2.217E-03 4.163E-04 10 2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 9.409E- 10 2.599E-10 PERIOD 3. PERCENT OF LIMIT (2.OOE-04

% 4.704E-04 1.300E-04 uCi/mL)D. GROSS ALPHA RADIOACTIVITY

1. TOTAL RELEASE CURIES 0.OOOE+00 0.OOOE+00 10 E. WASTE VOL RELEASED 1. TOTAL PRE-DILUTION LITERS 5.235E+/-06 4.942E+06 VOLUME LITERS 5.235E+06 4.942E+06 1 2. BATCH PRE-DILUTION LITERS 1 146E+06 8.362E+05 I VOLUME LITERS 1.146E+06 8.362E+05 1 F. VOLUME OF DILUTION LITERS 2.351E+09 1.597E+09 10 WATER USED** LITERS 2.5E0_.57+9_

EC= Effluent Concentration

- "Volume of dilution water used" means the volume of water circulated through the main condenser during the actual time of release. Liquid effluent releases ultimately dilute into the volume of the onsite main cooling reservoir and then into offsite water bodies as described in Section 2, subsection Radiological Impact on Man of this report.5-4 U I I I I I I I I I I I I I I qAl TTld q DDNTFC'T D A r'%CnA rTIVI EFFLUENIJ2KT P121 IAgJ2 RPORC~T 20fl10 -,Ql1TT T12VAQ lDnT11120T Liquid Effluents STP NUCLEAR OPERATING COMPANY Unit 1 REPORT CATEGORY:

SEMIANNUAL LIQUID CONTINUOUS AND BATCH RELEASES.

TOTALS FOR EACH NUCLIDE RELEASED.TYPE OF ACTIVITY:

ALL RADIONUCLIDES REPORTING PERIOD: QUARTER # 3 AND QUARTER #4 YEAR 2010 I CONTINUOUS RELEASES I BATCH RELEASES RELES UNITS QUARTER 3 QUARTER 4 QUARTER 3 QUARTER 4 RELEASED 7 ALL NUCLIDES Beryllium-7 CURIES O.OOE+00 O.OOE+00 O.OOE+00 1.54E-05 Cobalt-57 CURIES O.OOE+00 O.OOE+00 O.OOE+00 1.78E-06 Cobalt-58 CURIES O.OOE+00 O.OOE+00 9.62E-05 1.82E-04 Cobalt-60 CURIES O.OOE+00 O.OOE+00 1.21E-03 1 .07E-03 Chromium-51 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cesium-134 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cesium-137 CURIES O.OOE+00 O.OOE+00 4.36E-05 9.32E-05 Iron-55 CURIES O.OOE+00 O.OOE+00 6.01E-04 4.96E-04 Iron-59 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tritium CURIES 1.04E-01 5.32E-02 3.93E+02 2.09E+02 Iodine-131 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Iodine-133 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Krypton-85 CURIES O.OOE+00 O.OOE+00 0.00E+00 O.OOE+00 Krypton-85M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Manganese-54 CURIES O.OOE+00 O.OOE+00 1.57E-04 1.77E-04 Sodium-24 CURIES O.OOE+00 O.OOE+00 O.OOE+00 2.52E-07 Niobium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Antimony-122 CURIES O.OOE+00 O.OOE+00 2.44E-05 O.OOE+00 Antimony-124 CURIES O.OOE+00 O.OOE+00 5.99E-04 2.87E-04 Antimony-125 CURIES O.OOE+00 O.OOE+00 6.61E-04 3.54E-04 Antimony-126 CURIES O.OOE+00 O.OOE+00 1.60E-05 0.00E+00 Tin-I 13 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tin-I 17M CURIES O.OOE+00 O.OOE+00 2.45E-06 O.OOE+00 Tellurium-125M CURIES O.OOE+00 O.OOE+00 3.73E-04 O.OOE+00 Xenon-] 31M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Xenon-133 CURIES O.OOE+00 O.OOE+00 2.22E-03 3.98E-04 Xenon-133M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Xenon-135 CURIES O.OOE+00 O.OOE+00 1.08E-06 1.85E-05 Zinc-65 CURIES O.OOE+00 O.OOE+00 O.OOE+00 0.00E+00 TOTAL FOR PERIOD CURIES 1.04E-01 5.32E-02 3.93E+02 2.09E+02 5-5 I RAflICIArT1V12 121212! 1112NT 1W! 12AQ.12 R12PflPT 91 fTTI4 T12V A DDCNII~frT Liquid Effluents STP NUCLEAR OPERATING COMPANY SEMIANNUAL SUMMATION OF ALL RELEASES BY QUARTER ALL LIQUID EFFLUENTS Unit: 2 Starting:

1-Jan-2010 Ending: 30-Jun-2010 EST. TOT TYPE OF EFFLUENT UNITS QUARTER 1 QUARTER 2 ERROR A. FISSION & ACTIVATION PRODUCTS 1. TOTAL RELEASE (NOT INCLUDING TRITIUM, CURIES 3.269E-03 4.369E-03 10 GASES, ALPHA)2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 1.663E-09 2.376E-09 PERIOD 3. PERCENT OF EC* LIMIT 2.262E-03 2.971 E-03 (FRACTIONAL)

B. TRITIUM 1. TOTAL RELEASE CURIES 5.167E+02 8.133E+01 10 2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 2.628E-04 4.422E-05 PERIOD 3. % OF LIMIT (I.00E-02 uCi/mL) % 2.628E+00 4.422E-01 C. DISSOLVED AND ENTRAINED GASES 1. TOTAL RELEASE CURIES 6.851E-01 7.497E-02 10 2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 3.485E-07 4.077E-08 PERIOD 3. PERCENT OF LIMIT (2.OOE-04

% 1.743E-01 2.038E-02 uCi/mL)D. GROSS ALPHA RADIOACTIVITY

1. TOTAL RELEASE CURIES 0.OOOE+00 0.000E+00 10 E. WASTE VOL RELEASED 1. TOTAL PRE-DILUTION LITERS 3.916E+06 3.009E+06 I VOLUME 2. BATCH PRE-DILUTION LITERS 1.331 E+06 1.012E+06 1 VOLUME F. VOLUME OF DILUTION LITERS 1.962E+09 1.836E+/-09 10 WATER USED** LITERS 1.962E+09 1.836E+09_10

EC= Effluent Concentration

- "Volume of dilution water used" means the volume of water circulated through the main condenser during the actual time of release. Liquid effluent releases ultimately dilute into the volume of the onsite main cooling reservoir and then into offsite water bodies as described in Section 2, subsection Radiological Impact on Man of this report.5-6 I I I I U I U I I I I U I U I I ID A ntl~l A I-11 XIF V V'FfI I Fl~l'r" DL. IV'A IQ 1A I ()V III ITU TFV A Q D~nI Ft('T o ArlIr~ArrIvI:

1212121 I TI2MT 0121 !2A~12 DLDC~DT I (I CClI TN TI2VA~ DDC~II2VT Liquid Effluents STP NUCLEAR OPERATING COMPANY Unit 2 REPORT CATEGORY:

SEMIANNUAL LIQUID CONTINUOUS AND BATCH RELEASES.

TOTALS FOR EACH NUCLIDE RELEASED.TYPE OF ACTIVITY:

ALL RADIONUCLIDES REPORTING PERIOD: QUARTER # 1 AND QUARTER ft F CONTINUOUS RELEASES 2 YEAR 2010 BATCH RELEASES NUCLIDES UNITS QUARTER 1 QUARTER 2 QUARTER 1 QUARTER 2 ALL NUCLIDES Beryllium-7 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cobalt-57 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cobalt-58 CURIES O.OOE+00 O.OOE+00 5.67E-05 1.42E-03 Cobalt-60 CURIES O.OOE+00 O.OOE+00 1.02E-03 3.25E-04 Chromium-51 CURIES O.OOE+00 O.OOE+00 O.OOE+00 1.54E-04 Cesium-134 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cesium- 137 CURIES O.OOE+00 O.OOE+00 4.67E-06 1.61E-06 Iron-55 CURIES O.OOE+00 O.OOE+00 1.39E-03 5.35E-04 Iron-59 CURIES O.OOE+00 O.OOE+00 O.OOE+00 2.51E-05 Tritium CURIES 4.97E-02 2.31E-02 5.17E+02 8.13E+OI Iodine-131 CURIES O.OOE+00 O.OOE+00 5.38E-05 2.63 E-04 Iodine-133 CURIES O.OOE+00 O.OOE+00 1.19E-05 O.OOE+00 Krypton-85 CURIES O.OOE+00 O.OOE+00 O.OOE+00 .1 5E-02 Krypton-85M CURIES O.OOE+00 O.OOE+00 1.00E-05 O.OOE+00 Manganese-54 CURIES O.OOE+00 O.OOE+00 4.71 E-05 8.47E-05 Sodium-24 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Niobium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 7.51E-06 Antimony-122 CURIES O.OOE+00 O.OOE+00 O.OOE+00 6.01E-05 Antimony-124 CURIES O.OOE+00 O.OOE+00 O.OOE+00 3.17E-04 Antimony-125 CURIES O.OOE+00 O.OOE+00 4.04E-04 1. 1 7E-03 Antimony-126 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tin-I 13 CURIES O.OOE+00 O.OOE+00 1.12E-06 O.OOE+00 Tin- I 17M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tellurium-125M CURIES O.OOE+00 O.OOE+00 2.79E-04 O.OOE+00 Xenon-I 31M CURIES O.OOE+00 O.OOE+00 4.50E-03 2.49E-03 Xenon-133 CURIES O.OOE+00 O.OOE+00 6.68E-0I 6.05E-02 Xenon-133M CURIES O.OOE+00 O.OOE+00 8.90E-03 4.92E-04 Xenon- 135 CURIES O.OOE+00 O.OOE+00 3.53E-03 1.04E-05 Zinc-65 CURIES O.OOE+00 O.OOE+00 O.OOE+00 3.07E-06 TOTAL FOR PERIOD CURIES 4.97E-02 2.3 1E-02 5.17E+02 8.14E+OI 5-7 I D A ni A rTIXITz I: V VI I I CXT DF71 F A QF DPIDCDT R'I TIT'I PPCIIIC'T Liquid Effluents STP NUCLEAR OPERATING COMPANY SEMIANNUAL SUMMATION OF ALL RELEASES BY QUARTER ALL LIQUID EFFLUENTS Unit: 2 Starting:

1-Jul-2010 Ending : 31-Dec-20 10 EST. TOT TYPE OF EFFLUENT UNITS QUARTER3 QUARTER4 ERROR A. FISSION & ACTIVATION PRODUCTS 1. TOTAL RELEASE (NOT INCLUDING TRITIUM, CURIES 9.521 E-04 5.965E-03 10 GASES, ALPHA)2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 1.037E-09 3.142E-09 PERIOD 3. PERCENT OF EC* LIMIT 7.940E-04 2.763E-03 (FRACTIONAL)

B. TRITIUM 1. TOTAL RELEASE CURIES 2.685E+01 7.260E+02 10 2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 2.925E-05 3.824E-04 PERIOD 3. % OF LIMIT (1.00E-02 uCi/mL) % 2.925E-01 3.824E+00 C. DISSOLVED AND ENTRAINED GASES 1. TOTAL RELEASE CURIES 1.041E-03 5.714E-03 10 2. AVERAGE DILUTED CONCENTRATION DURING uCi/mL 1.134E-09 3.01OE-09 PERIOD 3. PERCENT OF LIMIT (2.OOE-04

% 5.669E-04 1.505E-03 uCi/mL)D. GROSS ALPHA RADIOACTIVITY

1. TOTAL RELEASE CURIES 0.OOOE+00 0.OOOE+00 10 E. WASTE VOL RELEASED 1. TOTAL PRE-DILUTION LITERS 2.696E+06 3.614E+06 I VOLUME 2. BATCH PRE-DILUTION LITERS 4.703E+05 1.351E+06 I VOLUME F. VOLUME OF DILUTION LITERS 9.154E+08 1.895E+09 10 WATER USED***EC= Effluent Concentration

"*"Volume of dilution water used" means the volume of water circulated through the main condenser during the actual time of release. Liquid effluent releases ultimately dilute into the volume of the onsite main cooling reservoir and then into offsite water bodies as described in Section 2, subsection Radiological Impact on Man of this report.5-8 I I I I I I I I I I I I I I I I I I qNl lTbl RAflIfACTIVIE EFFLUETINT RELE IASE RE2PORT 201 SOUhTH4 TEXVAS PROJErCT Liquid Effluents STP NUCLEAR OPERATING COMPANY Unit 2 REPORT CATEGORY:

SEMIANNUAL LIQUID CONTINUOUS AND BATCH RELEASES.

TOTALS FOR EACH NUCLIDE RELEASED.TYPE OF ACTIVITY:

ALL RADIONUCLIDES REPORTING PERIOD: QUARTER # 3 AND QUARTER #4 YEAR 2010 I CONTINUOUS RELEASES I BATCH RELEASES NUCLIDES11 ULIESE UNITS QUARTER 3 QUARTER 4 QUARTER 3 QUARTER 4 RELEASED ALL NUCLIDES Beryllium-7 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cobalt-57 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Cobalt-58 CURIES O.OOE+00 O.OOE+00 4.35E-05 9.50E-04 Cobalt-60 CURIES O.OOE+00 O.OOE+00 1.04E-04 1.03E-03 Chromium-51 CURIES O.OOE+00 O.OOE+00 O.OOE+00 3.32E-04 Cesium-134 CURIES O.OOE+00 O.OOE+00 7.30E-06 3.64E-06 Cesium-137 CURIES O.OOE+00 O.OOE+00 8.51E-06 1.80E-05 Iron-55 CURIES O.OOE+00 O.OOE+00 3.91E-04 1.70E-03 Iron-59 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tritium CURIES 8.30E-02 6.16E-02 2.68E+01 7.26E+02 Iodine-131 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Iodine- 133 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Krypton-85 CURIES O.OOE+00 O.OOE+00 1.04E-03 O.OOE+00 Krypton-85M CURIES O.OOE+00 O.OOE+00 0.OOE+00 O.OOE+00 Manganese-54 CURIES O.OOE+00 O.OOE+00 2.83E-05 7.99E-05 Sodium-24 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Niobium-95 CURIES O.OOE+00 O.OOE+00 O.OOE+00 3.68E-05 Antimony-122 CURIES O.OOE+00 O.OOE+00 O.OOE+00 5.22E-06 Antimony-124 CURIES O.OOE+00 O.OOE+00 1.95E-05 2.75E-04 Antimony-125 CURIES O.OOE+00 O.OOE+00 3.50E-04 1.53E-03 Antimony-126 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tin-I 13 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tin-I 17M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Tellurium-125M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Xenon- 131M CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Xenon-133 CURIES O.OOE+00 O.OOE+00 O.OOE+00 5.40E-03 Xenon-133M CURIES O.OOE+00 O.OOE+00 O.OOE+00 1.39E-04 Xenon-135 CURIES O.OOE+00 O.OOE+00 O.OOE+00 1.74E-04 Zinc-65 CURIES O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD CURIES 8.30E-02 6.16E-02 2.68E+OI 7.26E+02 5-9 RAnrOACTIvF J2FPT TIJ2NT R121 12A~~I~ R12PORT 900 Liquid Effluents STP NUCLEAR OPERATING COMPANY Unit 1 plus 2 Total ORY: ANNUAL LIQUID RELEASES.

TOTALS FOR EACH NUCLIDE RELEASED.

FOR ALL OF 2010 REPORT CATE(NUCLIDES UNIT 1 UNIT 2 TOTAL RELEASED 2010 2010 2010 ALL NUCLIDES Beryllium-7 CURIES 1.54E-05 0.OOE+00 1.54E-05 Cobalt-57 CURIES 1.78E-06 0.OOE+00 1.78E-06 Cobalt-58 CURIES 6.55E-04 2.47E-03 3.12E-03 Cobalt-60 CURIES 3.34E-03 2.47E-03 5.82E-03 Chromium-51 CURIES 0.OOE+00 4.87E-04 4.87E-04 Cesium-134 CURIES 0.OOE+00 1.09E-05 1.09E-05 Cesium-137 CURIES 3.63E-04 3.28E-05 3.96E-04 Iron-55 CURIES 3.37E-03 4.02E-03 7.39E-03 Iron-59 CURIES 0.OOE+00 2.51E-05 2.51E-05 Tritium CURIES 8.26E+02 1.35E+03 2.18E+03 Iodine- 131 CURIES 0.OOE+00 3.17E-04 3.17E-04 Iodine-133 CURIES 0.OOE+00 1.19E-05 1.19E-05 Krypton-85 CURIES 0.OOE+00 1.25E-02 1.25E-02 Krypton-85M CURIES 0.OOE+00 1.OOE-05 I.OOE-05 Manganese-54 CURIES 1.06E-03 2.40E-04 1.30E-03 Sodium-24 CURIES 2.52E-07 0.OOE+00 2.52E-07 Niobium-95 CURIES 6.54E-06 4.43E-05 5.08E-05 Antimony-122 CURIES 2.44E-05 6.54E-05 8.97E-05 Antimony-124 CURIES 9.52E-04 6.12E-04 1.56E-03 Antimony-125 CURIES 1.52E-03 3.46E-03 4.98E-03 Antimony-126 CURIES 1.60E-05 0.OOE+00 1.60E-05 Tin-113 CURIES 0.OOE+00 1.12E-06 1.12E-06 Tin-I 17M CURIES 2.45E-05 O.OOE+00 2.45E-05 Tellurium-125M CURIES 5.69E-04 2.79E-04 8.48E-04 Xenon- 131M CURIES 0.OOE+00 6.99E-03 6.99E-03 Xenon-133 CURIES 3.18E-03 7.34E-01 7.37E-01 Xenon-133M CURIES O.OOE+00 9.53E-03 9.53E-03 Xenon-135 CURIES 1.96E-05 3.71E-03 3.73E-03 Zinc-65 CURIES 0.OOE+00 3.07E-06 3.07E-06 TOTAL FOR PERIOD CURIES 8.26E+02 1.35E+03 2.18E+03 TOTAL Noble Gases CURIES 3.22E-03 7.70E-01 7.73E-01 TOTAL Excluding CURIES 1.1 9E-02 1.45E-02 2.65E-02 Tritium & Noble Gases I I I I I I I I I I I I I I I 5-10 R A DIOACTIVF FFF1 I IFNTRFI.FAIF RFP(-)RT)(M)RADIOACTIVF PFFTIJFNT RPIPASP RPPORT ~n1n SOUTH TEXAS PROJECT Solid Waste and Irradiated Fuel Shipments Solid Waste and Irradiated Fuel Shipments 6-1 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOl JTH TEXAS PROJECT Solid Waste and Irradiated Fuel Shipments A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not Irradiated Fuel)1. Type of Waste Units 12-Month 12-Month Est. Total Error, %Period Shipped Period Buried a. Spent resins, filter sludges, m None N/A evaporator bottoms, etc. Ci b. Dry compressible waste, m 5.17E+02 9.38E+01 -1.00E+00 1.00E+00 contaminated equip., etc. Ci 1.09E+00 6.61E-01 -6.60E+O1 2.OOE+02 c. Irradiated components, control m3N/A rods, etc. Ci d. Other (low level secondary resin, m' 6.93E+01 6.48E+01 -1.00E+00 1.00E+00 sludge, oil and oily sludge). Ci 1.38E-04 1.28E-04 -5.00E+01 1.00E+02 2. Estimate of major nuclide composition (by type of waste)a. Spent resins, filter sludges, None N/A evaporator bottoms, etc.b. Dry compressible waste, contaminated Shipped Curie (Ci) Percent (%)equip., etc.Iron-55 0.57107 52.6%Cobalt-60 0.19986 18.4%Nickel-63 0.10923 10.1%Chromium-51 0.08821 8.1%Cobalt-58 0.07900 7.3%Manganese-54 0.01543 1.4%Niobium-95 0.00845 0.8%Zirconium-95 0.00699 0.6%Iron-59 0.00256 0.2%Antimony-125 0.00192 0.2%Cobalt-57 0.00060 0.1%Cesium-137 0.00105 0.1%c. Irradiated components, control rods, None N/A etc.d. Other (low level secondary resin, Shipped Curie (Ci) Percent (%)sludge, oil and oily sludge).H-3 0.00012906 93.85%Iron-55 0.00000486 3.53%Cobalt-60 0.00000207 1.50%Nickel-63 0.00000074 0.54%Beryllium-7 0.00000067 0.54%Cesium- 137 0.000000007 0.01%I I I I I I I I I I U I U I 6-2 RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Solid Waste and Irradiated Fuel Shipments 3. Solid Waste Disposition Number of Shipments Mode of Destination Transportation Energy Solutions

-Duratek Services 1560 Bear Creek Road Oak Ridge, TN 37830 Republic Services *Blueridge Landfill 3 Truck 220 FM 521 Fresno, Texas 77545 Republic Services *Gulf West Landfill 3 Truck 2601 South Jenkins Road Anahuac, Texas 77514 Note: *Shipped per Texas Commission on Environmental Quality exemption to industrial landfill.4. Class of Solid Waste: A 5. Type of Containers Used for Shipment: IP-1, General Design 6. Solidifying Agent: N/A B. IRRADIATED FUEL SHIPMENTS (Disposal)

No shipments made during this period.6-3 P AflIflA(TIXIP EFFL1I TI2MT P121 J2AVJ PJ2DC~nlP 11) 1 ()SOUTH TEXAS PROJECT Solid Waste and Irradiated Fuel Shipments I INTENTIONALLY LEFT BLANK 6-4 9010 R ADIOACTIVE EFFLUE INT RELE ASE REPORT 2010 SOUTH TEXAS PROJECT Dose Accumulations DOSE ACCUMULATIONS 7-1 D A nin A~TXE 071MCC 11 1 r;XIT' 011 CZA QU D2DflDT 3MI1 (SOUTH TEXAS PROJECT Dose Accumulations I STP NUCLEAR OPERATING COMPANY

SUMMARY

OF MAXIMUM INDIVIDUAL DOSES Unit: 1 TOTAL ACCUMULATION FOR PERIODS: for LIQUID, GASEOUS AND AIR Starting:

1-Jan-2010 Ending: 31-Dec-2010 I I U I I U I I I I I I I I I

SUMMARY

OF POPULATION DOSES FOR 2010 ESTIMATED AVERAGE DOSE TO EFFLUENT APPLICABLE ORGAN POPULATION DOSE POPULATION (rem per person)(person-rem)

LIQUID TOTAL BODY 3.65E-04 7.21E-08 GASEOUS TOTAL BODY 4.70E-02 4.27E-09 NOTES: (')Doses were calculated for HYPOTHETICAL receptors at the site boundary.(2)Highest dose for nearest individual or receptor.

This individual is assumed to reside at this location.(3) Calculation based on a population of 303,500 for shore line exposure and for salt water invertebrate ingestion and 3,800 for salt water sport fish ingestion.

(4) Calculation based on a population of 299,000 within fifty (50) miles of South Texas Project Electric Generating Station.(5)Receptor 3 is an individual ingesting fresh water sport fish and receiving shoreline exposure from the Little Robbins Slough Area.7-2 ITM TFYA¢, RADIOlACTIVE2 EFFLUEIINT RELE ASE RE2PORT 2010 SOUI TH4 TEXYAS PROJE2CT Dose Accumulations STP NUCLEAR OPERATING COMPANY

SUMMARY

OF MAXIMUM INDIVIDUAL DOSES Unit: 2 TOTAL ACCUMULATION FOR PERIODS: for LIQUID, GASEOUS, AND AIR Starting:

1-Jan-2010 Ending: 31-Dec-2010

SUMMARY

OF POPULATION DOSES FOR 2010 SESTIMATED AVERAGE DOSE TO EFFLUENT APPLICABLE ORGAN POPULATION DOSE POPULATION (rem per person)(person-rem)

LIQUID TOTAL BODY 5.36E-04 1.17E-07 GASEOUS TOTAL BODY 4.90E-02 4.64E-09 NOTES: "'Doses were calculated for HYPOTHETICAL receptors at the site boundary.('2 Highest dose for nearest individual or receptor.

This individual is assumed to reside at this location.Calculation based on a population of 303,500 for shore line exposure and for salt water invertebrate ingestion and 3,800 for salt water sport fish ingestion.

(4) Calculation based on a population of 299,000 within fifty (50) miles of South Texas Project Electric Generating Station.")Receptor 3 is an individual ingesting fresh water sport fish and receiving shoreline exposure from the Little Robbins Slough Area.7-3 RAflIOAC'TIVF PITt I IFNT RFI FA~F RFPORT~n1nTTI T12YA'Z ooirrI=Y RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Dose Accumulations STP NUCLEAR OPERATING COMPANY

SUMMARY

OF MAXIMUM INDIVIDUAL DOSES Unit: 1 PLUS 2 TOTAL ACCUMULATION FOR PERIODS: for LIQUID, GASEOUS, AND AIR Starting:

1-Jan-2010 Ending: 31-Dec-2010

'U I I I U I I I U 1 I I I I U I

SUMMARY

OF POPULATION DOSES FOR 2010 TOTAL 1+2 TOTAL 1+2 AVERAGE DOSE EFFLUENT APPLICABLE ORGAN ESTIMATED TO POPULATION (rem per POPULATION DOSE person)(person-rem) person)LIQUID TOTAL BODY 9.01E-04 1.89E-07 GASEOUS TOTAL BODY 9.60E-02 7.43E-09 NOTES: ,, Doses were calculated for HYPOTHETICAL receptors at the site boundary.(2'Highest dose for nearest individual or receptor.

This individual is assumed to reside at this location.(3) Calculation based on a population of 303,500 for shore line exposure and for salt water invertebrate ingestion and 3,800 for salt water sport fish ingestion.

(4) Calculation based on a population of 299,000 within fifty (50) miles of South Texas Project Electric Generating Station.(5)Receptor 3 is an individual ingesting fresh water sport fish and receiving shoreline exposure from the Little Robbins Slough Area.7-4 I I I RADI!OACTIVE EF1FLUEN~hT RELEFASE REPORT 2010f SOUTH TEXAS PROJECT Results of Direct Radiation Measu rements RESULTS OF DIRECT RADIATION MEASUREMENTS PROGRAM 8-1

) A "In A TIfUT'C 1 I TCXJT DCI UA ACE DCDC\DTýnlnITIJ A ThflLJIkJfli..

liv L. LA I LW LAN I IvLLL1-X3U flErvJn. I ZUlU 011W In I CflflO rr.AjJCI I Results of Direct Radiation Measurements STP NUCLEAR OPERATING COMPANY Onsite Direct Radiation Measurements REPORT CATEGORY:

THERMOLUMINESCENT DOSIMETER MONITORING STATIONS QUARTERLY RESULTS FOR 2010 TABLE 8-1 MONITORING STATION QUARTER QUARTER QUARTER QUARTER AVERAGE AVERAGE NUMBER (Noted 1 2 3 4 RATE NET RATE on Figure 8-1)UNITS milliroentgen milliroentgen milliroentgen milliroentgen milliroentgen milliroentgen per quarter per hour PROTECTED AREA 1 13.5 12.2 13.1 13.0 13.0 0.0000 2 13.0 11.7 12.1 13.1 12.5 0.0000 3 13.1 11.8 12.6 12.5 12.5 0.0000 4 14.1 13.6 13.7 13.5 13.7 0.0000 5 18.1 20.0 18.7 17.3 18.5 0.0014 6 33.9 47.9 42.3 37.2 40.3 0.0114 7 41.3 65.9 56.9 45.3 52.4 0.0169 8 21.8 26.5 25.3 22.0 23.9 0.0039 9 14.4 13.9 15.0 13.9 14.3 0.0000 10 13.2 12.0 12.4 12.6 12.6 0.0000 11 12.1 10.8 11.5 11.9 11.6 0.0000 12 12.6 11.2 12.5 12.6 12.2 0.0000 13 11.0 9.9 10.9 11.1 10.7 0.0000 14 12.2 10.6 11.9 12.0 11.7 0.0000 15 13.2 12.0 12.7 12.5 12.6 0.0000 16 12.5 11.2 12.1 12.3 12.0 0.0000 ONSITE STAGING FACILITY (OUTSIDE STORAGE)17 13.9 11.2 11.8 13.7 12.7 0.0000 18 12.3 10.7 11.3 12.1 11.6 0.0000 19 12.2 10.6 11.3 12.5 11.6 0.0000 20 15.3 13.5 13.7 14.7 14.3 0.0000 ONSITE STAGING FACILITY (WAREHOUSE D)21 17.5 16.1 14.2 15.6 15.9 0.0002 22 47.5 82.2 18.3 25.9 43.5 0.0129 23 20.0 14.7 14.1 17.6 16.6 0.0005 24 50.8 24.0 22.8 73.2 42.7 0.0125 OLD STEAM GENERATOR STORAGE FACILITY 25 13.4 11.6 12.8 12.7 12.6 0.0000 26 16.3 14.4 15.3 15.6 15.4 0.0000 27 14.6 13.3 13.3 14.5 13.9 0.0000 28 17.0 15.6 13.4 14.7 15.2 0.0000 I I I I N U I I a I U I I I I I I'I 8-2 I RADIOACTIVE EFFLUENT RELEASE REPORT 2010 SOUTH TEXAS PROJECT Results of Direct Radiation Measurements Notes for Onsite Direct Radiation Measurements Measurement Results Individual values normalized to a 91 day quarter.Only the calcium sulfate elements were used in these averages.Average Net Rate: Difference between the 2010 exposure rate and the 1986 measured rate due to natural background (average rate -15.4 mR background)

/ 91 days / 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months per day The pre-operational background rate of 15.4 mR at the site boundary in 1986 has been used to reflect the background baseline exposure rate for STP. Historically the exposure rates measured near the protected area fence have been lower than the historical background at the site boundary.

However, dosimeter stations 6 and 7 have at times exceeded this background rate due to radioactive waste processing activities on the south side of Units I and 2. Temporary staging of the Units I and 2 old reactor vessel heads in the Unit 2 radioactive waste processing yard in 2010 elevated stations 5, 6, 7, and 8. Measurements around Warehouse D were elevated due to temporary storage of radioactive material awaiting shipment.Zero: Zero (0 or 0.00) indicate background levels Milliroentgen:

Miliroentgen or mR is a unit of exposure for X-rays and gamma rays.8-3 20102S,008 SOUTH TEXAS PROJECT RADIOACTIVE EFFLUENT RELEASE REPORT A.R.E -Site Map FIGURE 8-1 2__ _ _ _ _ _ _ _ -SWITCHYARD

.......

OLD STEAM GENERATOR STORAGE --------_260 j 1 1 arehouse D F7-)i7 .- --wa 4 ........ 60 r 0 -- Direct Radiation Monitoring Stations ;n m- o w f m- W -10 mW mo a I w no mm A FIT n A TI/F IUUT71 I I MOT DT71 17 A IZ1 1A I A PAflICIACTIXI12 1212121 III2MT P121 12A~I2 D12DflDT A SOUTH TEXAS PROJECT Joint Frequency Tables JOINT FREQUENCY TABLES 9-1 Radioactive Release Effluent Report -RDRJFC South Texas Project First Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER I I a/9-2 I Radioactive Release Effluent Report -RDRJFC South Texas Project First Quarter 2010 Joint Frequency Tables , Joint Frequency Table From : 01/01/2010 00:00 To : 03/31/2010 23:00! PRIMARY TOWER STABILITY CLASS A Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 1 0 0 0 0 0 0 1 11.1% 2.6 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 1 0 0 0 0 1 11.1% 9.7 SSE 0 0 0 0 0 0 0 0 0 0.0% 0.0 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 0 0 1 0 0 0 0 1 11.1% 8.8 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 1 1 1 0 0 3 33.3% 14.0 NW 0 2 1 0 0 0 0 0 3 33.3% 3.7 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 Total% Of Total 0 3 1 3 1 1 0 0 9 0.0%33.3%11.1%33.3%11.1%11.1%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 8.2 0 7 0 2160 2160 9-3 Radioactive Release Effluent Report -RDRJFC South Texas Project First Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER I I U STABILITY cLASS B I I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 0 0 1 0 0 1 6.7% 19.9 SSE 0 0 0 0 2 0 0 0 2 13.3% 13.7 S 0 0 0 3 0 0 0 0 3 20.0% 10.3 SSW 0 0 0 2 0 0 0 0 2 13.3% 9.4 SW 0 0 1 0 0 0 0 0 1 6.7% 4. 6 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 1 0 0 0 0 1 6.7% 11.4 WNW 0 0 2 0 3 0 0 0 5 33.3% 10.9 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 I I I I I I I I I I I I I I Total% Of Total 0 0 3 6 5 33.3%1 6.7%0 0.0%0 15 0.0%0.0%20.0%40.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 11.2 0 7 0 2160 2160 9-4 I Radioactive Release Effluent Report -RDRJFC South Texas Project First Quarter 2010 Joint Frequency Table Joint Frequency Tables From : 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER STABILITY CLASS C Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 1 0 0 0 0 0 0 1 1.9% 1.8 NNE 0 1 0 0 0 0 0 0 1 1.9% 3.5 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 6 0 0 0 6 11.1% 16.9 SE 0 0 1 1 1 2 0 0 5 9.3% 13.8 SSE 0 0 0 1 3 0 0 0 4 7.4% 13.0 S 0 0 0 8 0 0 0 0 8 14.8% 10.2 SSW 0 0 3 3 0 0 0 0 6 11.1% 7.5 SW 0 0 1 4 0 0 0 0 5 9.3% 8.5 WSW 0 1 0 0 0 0 0 0 1 1.9% 2.7 W 0 0 0 1 0 0 0 0 1 1.9% 10.9 WNW 0 1 2 0 1 2 0 0 6 11.1% 11.6 NW 0 0 0 1 6 3 0 0 10 18.5% 16.2 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 Total% Of Total 0 4 7 19 17 7 0 0 54 0.0%7.4%13.0%35.2%1 31.5%13.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 11.9 0 7 0 2160 2160 9-5 Radioactive Release Effluent Report -RDRJFC South Texas Project First Quarter 2010 Joint Frequency Tables Joint Frequency Table From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER I I I STABILITY CLASS D I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-C12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 2 14 24 41 10 0 0 91 8.9% 12.7 NNE 0 1 19 30 6 0 0 0 56 5.4% 8.9 NE 0 2 29 40 9 0 0 0 80 7.8% 8 .6 ENE 0 0 15 32 7 1 0 0 55 5.4% 9.6 E 0 2 2 35 22 2 0 0 63 6.1% 11.8 ESE 0 0 6 41 42 5 0 0 94 9.1% 12.6 SE 0 3 6 43 30 5 1 0 88 8.6% 12.5 SSE 0 1 7 31 33 1 0 0 73 7.1% 11.7 S 0 1 14 21 0 0 0 0 36 3.5% 8.0 SSW 0 1 14 0 0 0 0 0 15 1.5% 6.3 SW 0 0 6 7 0 0 0 0 13 1.3% 7.6 WSW 0 0 10 2 0 0 0 0 12 1.2% 6.4 W 0 2 5 2 0 0 0 0 9 0.9% 5.5 WNW 0 2 11 1 3 0 0 0 17 1.7% 7.1 NW 0 1 11 30 44 13 0 0 99 9.6% 13.5 NNW 0 2 29 61 110 24 1 0 227 22.1% 13.1 5 I a I I U I I Total% Of Total 0 20 198 400 347 61 2 0 1028'I 0.0%1.9%19.3%38.9%33.8%5.9%0.2%0.0%Average speed for this table (MPH): 11.5 ~0 Hours in above table with variable direction Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 7 0 2160 2160 I I I I I 9-6 37 Radioactive Release Effluent Report -RDRJFC South Texas Project First Quarter 2010 Joint Frequency Tables I Joint Frequency Table From : 01/01/2010 00:00 To : 03/31/2010 23:00 I PRIMARY TOWER STABILITY CLAss E (1) (2) (8)CALM 1.0 32.6 +Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 6 18 11 2 1 0 0 38 6.2% 7.2 NNE 0 4 15 7 1 0 0 0 27 4.4% 6.0 NE 0 2 21 13 2 0 0 0 38 6.2% 7.4 ENE 0 1 16 29 11 1 0 0 58 9.5% 9.6 E 1 1 34 11 6 3 2 0 58 9.5% 9.3 ESE 0 9 28 35 12 0 0 0 84 13.7% 8.3 SE 0 3 19 39 2 0 0 0 63 10.3% 8.2 SSE 0 2 16 36 3 0 0 0 57 9.3% 8.5 S 0 6 25 6 0 0 0 0 37 6.0% 5.9 SSW 0 4 18 0 0 0 0 0 22 3.6% 4 .5 SW 0 3 7 2 0 0 0 0 12 2.0% 5.3 WSW 0 1 2 3 0 0 0 0 6 1.0% 6.4 W 0 1 4 1 0 0 0 0 6 1.0% 5.4 WNW 0 8 5 0 0 0 0 0 13 2.1% 3.3 NW 0 3 14 12 5 0 0 0 34 5.5% 8 .4 NNW 0 7 34 17 2 0 0 0 60 9.8% 6.9 Total% Of Total 1 0.2%61 10.0%276 45.0%222 36.2%46 7.5%5 2 0 613 0.8%0.3%0.0%45.0% 0.3% 0.8% 0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 7.7 0 7 0 2160 2160 9-7 Radioactive Release Effluent Report -RDRJFC South Texas Project First Quarter 2010 Joint Frequency Tables Joint Frequency Table From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER I I I STABILITY cL~ss F" -Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 6 12 0 0 0 0 0 18 9.7% 4.5 NNE 0 5 6 0 0 0 0 0 11 5.9% 3.7 NE 1 4 11 1 0 0 0 0 17 9.1% 4.5 ENE 0 3 6 2 0 0 0 0 11 5.9% 5.3 E 0 9 15 2 0 0 0 0 26 14.0% 4.5 ESE 0 6 10 0 0 0 0 0 16 8. 6% 3.9 SE 0 5 4 0 0 0 0 0 9 4.8% 4.3 SSE 0 3 6 0 0 0 0 0 9 4 .8% 4.3 S 0 10 2 0 0 0 0 0 12 6.5% 3.1 SSW 0 3 1 0 0 0 0 0 4 2.2% 2.9 SW 0 0 1 0 0 0 0 0 1 0.5% 6.4 WSW 0 2 1 0 0 0 0 0 3 1.6% 2.9 W 0 4 1 0 0 0 0 0 5 2.7% 2.9 WNW 0 3 1 0 0 0 0 0 4 2.2% 2.6 NW 0 9 9 3 0 0 0 0 21 11.3% 4 .6 NNW 0 6 13 0 0 0 0 0 19 10.2% 3.9 I 3 I I I Total% Of Total 1 78 99 8 0 0 0 0 186 0.5%41.9%53.2%4.3%0.0%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 4.1 0 7 0 2160 2160 9-8 If Radioactive Release Effluent Report -RDRJFC South Texas Project First Quarter 2010 Joint Frequency Table Joint Frequency Tables From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER STABILITY CLASS G Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-112.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 5 1 0 0 0 0 0 6 2.4% 2.4 NNE 0 14 11 0 0 0 0 0 25 9.8% 3.3 NE 1 21 13 0 0 0 0 0 35 13.7% 3.3 ENE 0 15 6 0 0 0 0 0 21 8.2% 2.9 E 2 10 10 0 0 0 0 0 22 8.6% 3.4 ESE 0 12 7 0 0 0 0 0 19 7.5% 3.2 SE 1 10 7 0 0 0 0 0 18 7.1% 3.0 SSE 0 6 3 0 0 0 0 0 9 3.5% 2.8 S 0 2 0 0 0 0 0 0 2 0.8% 1.9 SSW 0 1 1 0 0 0 0 0 2 0.8% 3.2 SW 0 1 0 0 0 0 0 0 1 0.4% 1.8 WSW 0 0 1 0 0 0 0 0 1 0.4% 5.2 W 0 6 10 0 0 0 0 0 16 6.3% 3.8 WNW 0 27 8 0 0 0 0 0 35 13.7% 2.7 NW 0 17 13 1 0 0 0 0 31 12.2% 3.7 NNW 1 8 3 0 0 0 0 0 12 4.7% 3.0 Total% Of Total 5 155 94 1 0 0.0%0 0 0 255 2.0%60.8%36.9%0.4%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 3.2 0 7 0 2160 2160 9-9 Radioactive Release Effluent Report -RDRJFCA South Texas Project Joint Frequency Tables First Quarter 2010 Joint Frequency Table From :01/01/2010 00:00 To :03/31/2010 23:00 PRIMARY TOW~ER ALL STABILITY CLASSES COMBINED Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6+Total % Of Avg.Total Speed N 0 21 45 35 43 11 0 0 155 7.2% 9.9 NNE 0 25 51 37 7 0 0 0 120 5.6% 6.5 NE 2 29 74 54 11 0 0 0 170 7.9% 6.8 ENE 0 19 43 63 18 2 0 0 145 6.7% 8.3 E 3 22 61 48 28 5 2 0 169 7.8% 8.7 ESE 0 27 51 76 60 5 0 0 219 10.1% 9.6 SE 1 21 37 84 33 8 1 0 185 8.6% 9.8 SSE 0 12 32 68 41 1 0 0 154 7.1% 9.7 s 0 19 41 38 0 0 0 0 98 4.5% 6. 8 SSW 0 9 37 6 0 0 0 0 52 2.4% 5.4 SW 0 4 16 13 0 0 0 0 33 1.5% 6. 6 WSW 0 4 14 5 0 0 0 0 23 1.1% 5.7 w 0 13 20 5 0 0 0 0 38 1.8% 4.7 WNW 0 41 29 2 8 3 0 0 83 3.8% 5.3 NW 0 32 48 47 55 16 0 0 198 9.2% 10.2 NNW 1 23 79 78 112 24 1 0 318 14.7% 11.0 I I I 11 I I I I I I I I Total%Of Total 0.3%321 14.9%678 3 1.4%659 30.5%416 19.3%75 3.5%4 0.2%0 2160 I 0.0%Average speed for this table (MPH): 0 Hours in above table with variable direction:

Total number of Total number of Total number of Total number of CALMs: Invalid hours Valid hours: hours for period 7 0 2160 2160 I I I I I 9-10 3 Radioactive Release Effluent Report -RDRJFC South Texas Project Second Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 04/01/2010 00:00 To 06/30/2010 23:00 I PRIMARY TOWER I I I I I I I I 9-11 Radioactive Release Effluent Report -RDRJFC South Texas Project Second Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER II I II STABILITY CLASS AI Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 1 0 0 0 0 1 2.0% 8.7 NNE 0 0 1 0 0 0 0 0 1 2.0% 4.9 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 2 0 0 0 0 0 2 4 .0% 5.6 SE 0 0 0 3 0 0 0 0 3 6.0% 9.4 SSE 0 0 3 11 8 7 0 0 29 58.0% 14.1 S 0 0 2 5 0 0 0 0 7 14.0% 9.4 SSW 0 0 0 1 0 0 0 0 1 2.0% 8.7 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 1 0 0 0 0 1 2.0% 8.1 WNW 0 0 0 3 0 0 0 0 3 6.0% 9.9 NW 0 0 0 2 0 0 0 0 2 4.0% 10.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 I 1 I I I I I I I I I I I I Total% Of Total 0 0 8 27 8 7 14.0%0 0.0%0 50 0.0%0.0%16.0%54.0%16.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 11.9 0 7 2 2182 2184 9-12 I Radioactive Release Effluent Report -RDRJFC South Texas Project Second Quarter 2010 Joint Frequency Tables Joint Frequency Table From 04/01/2010 00:00 To :06/30/2010 23:00 PRIMARY TOWER STABILITY CLASS B Wind Speed (MPH) ->Sector (I)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total% Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 1 0 0 0 0 0 1 1.9% 6.8 NE 0 0 1 0 0 0 0 0 1 1.9% 5.6 ENE 0 0 1 0 0 0 0 0 1 1.9% 5.3 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 1 0 3 5 0 0 9 16.7% 18.2 SE 0 0 3 5 7 2 0 0 17 31.5% 12.4 SSE 0 0 0 4 7 0 0 0 11 20.4% 14.2 s 0 0 1 6 0 0 0 0 7 13.0% 9.8 SSW 0 0 0 1 0 0 0 0 1 1.9% 7.6 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 wSW 0 0 0 1 0 0 0 0 1 1.9% 8.2 W 0 0 1 1 0 0 0 0 2 3.7% 8.2 WNW 0 0 0 1 0 0 0 0 1 1.9% 8.6 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 1 0 1 0 0 0 2 3.7% 10.2 Total% Of Total 0 0 10 18.5%19 35.2%18 7 0 0.0%0 54 0.0%0.0%33.3%13.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 12.5 0 7 2 2182 2184 9-13 Radioactive Release Effluent Report -RDRJFC South Texas Project Second Quarter 2010 Joint Frequency Tables Joint Frequency Table From 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER STABILITY CLASS C Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 1 0 0 0 1 0.8% 13.9 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 1 2 0 0 0 3 2.4% 13.9 ENE 0 1 0 1 0 0 0 0 2 1.6% 8.0 E 0 0 1 0 1 0 0 0 2 1.6% 9.7 ESE 0 0 1 0 6 6 0 0 13 10.3% 18.1 SE 0 1 2 11 14 2 0 0 30 23.8% 12.8 SSE 0 0 2 22 10 0 0 0 34 27.0% 11.5 S 0 0 1 28 4 0 0 0 33 26.2% 10.3 SSW 0 0 0 1 0 0 0 0 1 0.8% 9.9 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 1 0 0 0 0 1 0.8% 10.5 W 0 0 1 0 0 0 0 0 1 0.8% 7.5 WNW 0 0 0 1 0 0 0 0 1 0.8% 12.4 NW 0 0 0 0 1 0 0 0 1 0.8% 13.9 NNW 0 0 1 1 1 0 0 0 3 2.4% 11.1 I I I K I 1 I I I I I I I I I I I I Total% Of Total 0 2 9 67 40 8 0 0 126 0.0%1.6%7.1%53.2%31.7%6.3%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 12.1 0 7 2 2182 2184 9-14 I Radioactive Release Effluent Report- RDRJFC I Raio ctiv Reeas Effuen Reort RDJFCSouth Texas Project Second Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER STABILITY CLASS D Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 2 7 5 3 1 0 0 18 1.6% 8.9 NNE 0 2 7 10 0 0 0 0 19 1.7% 7.2 NE 0 2 4 12 5 0 0 0 23 2.1% 9.5 ENE 0 4 4 5 3 0 0 0 16 1.5% 8.0 E 0 4 5 26 33 1 0 0 69 6.3% 11.7 ESE 0 2 13 57 60 4 0 0 136 12.3% 12.2 SE 0 4 21 115 172 8 0 0 320 29.0% 12.7 SSE 0 1 29 161 81 0 0 0 272 24.7% 11.0 S 0 1 33 78 8 0 0 0 120 10.9% 9.0 SSW 0 3 18 2 0 0 0 0 23 2.1% 5.8 SW 0 1 5 3 0 0 0 0 9 0.8% 5.7 WSW 0 0 2 1 0 0 0 0 3 0.3% 6.6 W 0 2 2 5 1 0 0 0 10 0.9% 8.0 WNW 0 2 10 4 0 0 0 0 16 1.5% 5.8 NW 0 0 8 5 5 1 0 0 19 1.7% 10.0 NNW 0 1 7 14 7 0 0 0 29 2.6% 9.3 Total% Of Total 0 31 175 503 378 34.3%15 0 0 1102 0.0%2.8%15.9%45.6%1.4%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 11.0 0 7 2 2182 2184 9-15 Radioactive Release Effluent Report -RDRJFC South Texas Project Second Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER I I I STABILITY cLA~ssE I (1) (2) (6) (8)CALM 1.0 18.6 32.6 +Wind Speed (MPH) ->Sector (I)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6+Total % Of Avg.Total Speed N 0 2 11 9 3 0 0 0 25 4.4% 7.4 NNE 0 2 7 4 1 0 0 0 14 2.5% 5.7 NE 0 6 7 11 6 0 0 0 30 5.3% 8.7 ENE 0 6 14 5 1 0 0 0 26 4.6% 6.6 E 0 8 19 3 0 0 0 0 30 5.3% 5.0 ESE 0 5 27 8 2 0 0 0 42 7.4% 6.0 SE 0 8 86 22 0 0 0 0 116 20.5% 6.2 SSE 0 4 61 45 1 0 0 0 Ill 19.6% 6.9 S 0 0 45 6 0 0 0 0 51 9.0% 6.0 SSW 0 7 24 0 0 0 0 0 31 5.5% 4.5 SW 0 1 5 4 0 0 0 0 10 1.8% 6.7 WSW 0 5 3 0 0 0 0 0 8 1.4% 3.6 W 0 4 3 0 0 0 0 0 7 1.2% 3.4 WNW 0 9 6 1 0 0 0 0 16 2.8% 4.1 NW 0 3 17 4 0 0 0 0 24 4.2% 5.9 NNW 0 2 8 13 2 0 0 0 25 4.4% 7.8 I I I 3 I I I I I I I Total% Of Total 0 0.0%72 12.7%343 60.6%135 23.9%16 2.8%0 0.0%0 0.0%0 566 0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 9-16 6.3 0 7 2 2182 2184 I I I I a Radioactive Release Effluent Report -RDRJFC South Texas Project Joint Frequency Tables Second Quarter 2010 Joint Frequency Table From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER STABILITY CLASS F Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 3 3 0 0 0 0 0 6 3.2% 3.1 NNE 0 8 4 0 0 0 0 0 12 6.5% 3.1 NE 0 10 3 0 0 0 0 0 13 7.0% 3.3 ENE 0 9 2 0 0 0 0 0 11 5.9% 2.6 E 0 13 2 0 0 0 0 0 15 8.1% 2.4 ESE 0 24 4 1 0 0 0 0 29 15.7% 2.8 SE 0 28 17 0 0 0 0 0 45 24.3% 3.4 SSE 0 5 20 0 0 0 0 0 25 13.5% 4.4 S 0 1 0 0 0 0 0 0 1 0.5% 1.7 SSW 0 1 0 0 0 0 0 0 1 0.5% 3.3 SW 0 0 2 0 0 0 0 0 2 1. 1% 5.9 WSW 0 2 1 0 0 0 0 0 3 1.6% 3.3 W 0 2 1 0 0 0 0 0 3 1.6% 4.0 WNW 0 7 2 0 0 0 0 0 9 4.9% 3.0 NW 0 4 1 0 0 0 0 0 6 3.2% 3.2 NNW 0 3 1 0 0 0 0 0 4 2.2% 2.3 120 Total% Of Total 1 0.5%120 64.9%63 1 0 0 0.0%0 0.0%0 185 34.1%0.5%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 3.2 0 7 2 2182 2184 9-17 Radioactive Release Effluent Report -RDRJFC South Texas Project Second Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER U I I STABILITY CLASS G I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 1 7 1 0 0 0 0 0 9 9.1% 1.8 NNE 0 8 0 0 0 0 0 0 8 8.1% 2.5 NE 0 7 0 0 0 0 0 0 7 7.1% 1.9 ENE 0 8 0 0 0 0 0 0 8 8.1% 1.6 E 2 13 0 0 0 0 0 0 15 15.2% 2.3 ESE 0 10 2 0 0 0 0 0 12 12.1% 2.6 SE 0 4 1 0 0 0 0 0 5 5.1% 3.1 SSE 0 2 0 0 0 0 0 0 2 2.0% 2.4 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 1 0 0 0 0 0 0 1 1.0% 1.2 SW 0 1 0 0 0 0 0 0 1 1.0% 1.0 WSW 0 3 3 0 0 0 0 0 6 6.1% 3.8 w 0 2 2 0 0 0 0 0 4 4.0% 3.2 WNW 0 9 0 0 0 0 0 0 9 9.1% 1.9 NW 0 4 0 0 0 0 0 0 4 4.0% 2.3 NNW 3 3 2 0 0 0 0 0 8 8.1% 2.0 I I i£I I II I I 1 I I I I I Total% Of Total 6 6.1%82 11 0 0 0 0 0 99 82.8%11.1%0.0%0.0%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 2.3 0 7 2 2182 2184 9-18 Radioactive Release Effluent Report -RDRJFCA South Texas Project Radioactive Release Effluent Report -RDRJFCA South Texas Project U-Second Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER ALL STABILITY CLASSES COMBINED Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-C12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6+Total % Of Avg.Total Speed N 1 14 22 15 7 1 0 0 60 2.7% 6.7 NNE 0 20 20 14 1 0 0 0 55 2.5% 5.2 NE 0 25 15 24 13 0 0 0 77 3.5% 7.5 ENE 0 28 21 11 4 0 0 0 64 2.9% 5.6 E 2 38 27 29 34 1 0 0 131 6.0% 8.0 ESE 0 41 50 66 71 15 0 0 243 11.1% 10.0 SE 0 45 130 156 193 12 0 0 536 24 .6% 10.4 SSE 0 12 115 243 107 7 0 0 484 22.2% 10.0 S 0 2 82 123 12 0 0 0 219 10.0% 8.5 SSW 0 12 42 5 0 0 0 0 59 2.7% 5.1 SW 0 3 12 7 0 0 0 0 22 1.0% 6.0 WSW 0 10 9 3 0 0 0 0 22 1.0% 4 .5 W 0 10 10 7 1 0 0 0 28 1.3% 5.7 WNW 0 27 18 10 0 0 0 0 55 2.5% 4 .6 NW 1 11 26 11 6 1 0 0 56 2.6% 7.0 NNW 3 9 20 28 11 0 0 0 71 3.3% 7.7______ _______ + A + F + 4 4- F Total% Of Total 7 0.3%307 14.1%619 28.4%752 34.5%460 21.1%37 1.7%0 0.0%0 2182 0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 8.9 0 7 2 2182 2184 9-19 Radioactive Release Effluent Report -RDRJFC South Texas Project Joint Frequency Tables Third Quarter 2010 Joint Frequency Table From : 07/01/2010 00:00 To : 09/30/2010 23:00 PRIMARY TOWER I I 9-20 I I Radioactive Release Effluent Report- RDRJFC Third Quarter 2010 South Texas Project Joint Frequency Tables Joint Frequency Table From 07/01/2010 00:00 To : 09/30/2010 23:00 PRIMARY TOWER STABILITY CLASS A (1) (6) (8)CALM 18.6 32.6 +Wind Speed (MPH) ->Sector (I)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6+Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 1 0 0 0 0 0 0 1 33.3% 1.6 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 0 0 0 0 0 0 0 0.0% 0.0 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 1 0 0 0 0 0 1 33.3% 3.7 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 1 0 0 0 0 0 0 1 33.3% 2.9 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 Total% Of Total 0 2 1 0 0 0.0%0 0.0%0 0.0%0 0.0%3 0.0%66.7%33.3%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 2.7 0 12 1 2207 2208 9-21 Radioactive Release Effluent Report -RDRJFC South Texas Project Third Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 07/01/2010 00:00 To : 09/30/2010 23:00 PRIMARY TOWER I I I STABILITY cLAss BI (1) (2) (8)CALM 1.0 32.6 +Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total% Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 1 0 0 0 0 1 33.3% 9.3 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 0 0 0 0 0 0 0 0.0% 0.0 S 0 0 0 1 1 0 0 0 2 66.7% 12.5 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 I I I 3 I I I I I I g I I I Total% Of Total 0 0 0 2 1 0 0.0%0 0.0%0 3 0.0%0.0%0.0%66.7%33.3%0.0%33.3% 0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 11.4 0 12 1 2207 2208 9-22 I I Radioactive Release Effluent Report -RDRJFC South Texas Project Third Quarter 2010 Joint Frequency Tables 3l Joint Frequency Table From 07/01/2010 00:00 To : 09/30/2010 23:00 I PRIMARY TOWER STABILITY CLASS C Wind Speed (MPH) ->Sector N (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed-3.5 -24.5-I- + F I- + F F 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 2 0 0 0 0 2 14.3% 11.4 SSE 0 0 0 0 0 0 0 0 0 0.0% 0.0 S 0 0 1 6 1 0 0 0 8 57.1% 10.5 SSW 0 0 1 2 0 0 0 0 3 21.4% 8.2 SW 0 0 0 1 0 0 0 0 1 7.1% 7.8 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 1 0 0.0% 0.0 F + F + + F 2 0 0 Total% Of Total 0 0 2 11 1 0 0 01 14 0.0%0.0%14.3%78.6%7.1%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 9.9 0 12 1 2207 2208 9-23 Radioactive Release Effluent Report -RDRJFC South Texas Project Third Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 07/01/2010 00:00 To : 09/30/2010 23:00 PRIMARY TOWER I I I STABILITY cLAss D I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 12 17 0 0 0 0 29 4.2% 8.2 NNE 0 1 19 23 0 0 0 0 43 6.2% 7.5 NE 0 3 20 10 0 0 0 0 33 4 .8% 6.6 ENE 0 1 8 3 0 0 0 0 12 1.7% 6.2 E 0 1 15 14 5 0 0 0 35 5.0% 8.5 ESE 0 2 14 32 5 0 0 0 53 7.6% 8.8 SE 0 2 22 79 27 0 0 0 130 18.7% 10.1 SSE 0 3 16 32 14 0 0 0 65 9.4% 9.6 S 0 0 93 85 0 0 0 0 178 25.6% 7.6 SSW 0 4 37 9 0 0 0 0 50 7.2% 6.0 SW 0 0 15 1 0 0 0 0 16 2.3% 5.9 WSW 0 2 7 1 0 0 0 0 10 1.4% 4.9 W 0 0 9 0 0 0 0 0 9 1.3% 5.2 WNW 0 1 8 0 0 0 0 0 9 1.3% 4 .1 NW 0 2 6 0 0 0 0 0 8 1.2% 4.4 NNW 0 0 10 4 0 0 0 0 14 2.0% 6.5 I I I I I I I I I I I I I I I Total% Of Total 0 0.0%22 3.2%311 44.8%310 44.7%51 7.3%0 0 0 694 0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 8.0 0 12 1 2207 2208 9-24

Radioactive Release Effluent Report -RDRJFC South Texas Project Third Quarter 2010 Joint Frequency Tables 5 Joint Frequency Table From : 07/01/2010 00:00 To : 09/30/2010 23:00 I PRIMARY TOWER STABILITY CLASS E Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6+Total % Of Avg.Total' Speed N 0 13 9 3 0 0 0 0 25 2.8% 4.4 NNE 0 15 34 4 1 0 0 0 54 6.1% 5.0 NE 0 23 27 14 0 0 0 0 64 7.2% 5.1 ENE 0 8 30 15 1 0 0 0 54 6.1% 6.2 E 0 11 25 14 0 0 0 0 50 5.6% 5.9 ESE 0 8 40 16 9 0 0 0 73 8.2% 7.3 SE 0 5 74 51 5 0 0 0 135 15.2% 7.3 SSE 0 7 76 21 7 0 0 0 Il1 12.5% 6.9 S 0 9 100 31 0 0 0 0 140 15.7% 5.9 SSW 0 6 73 2 0 0 0 0 81 9.1% 5.1 SW 0 6 25 6 0 0 0 0 37 4.2% 5.5 WSW 0 2 5 0 0 0 0 0 7 0.8% 4.2 W 0 10 3 0 0 0 0 0 13 1.5% 3.0 WNW 0 6 2 0 0 0 0 0 8 0.9% 2.9 NW 0 13 2 1 0 0 0 0 16 1 .8% 2.9 NNW 0 9 7 5 0 0 0 0 21 2.4% 5.0 889+ i I F F F-Total% Of Total 0 0.0%151 17.0%532 59.8%183 20.6%23 2.6%0 0.0%0 0.0%0 0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 6.0 0 12 1 2207 2208 9-25 Radioactive Release Effluent Report -RDRJFC South Texas Project Third Quarter 2010 Joint Frequency Tables Joint Frequency Table From 07/01/2010 00:00 To : 09/30/2010 23:00 PRIMARY TOWER I I I STAB3ILITY cL~ss F I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 13 3 0 0 0 0 0 16 3.8% 2.7 NNE 0 30 16 1 0 0 0 0 47 11.1% 3.3 NE 2 33 13 0 0 0 0 0 48 11.3% 3.0 ENE 0 34 9 0 0 0 0 0 43 10.2% 2.8 E 1 31 13 2 0 0 0 0 47 11.1% 3.1 ESE 0 26 15 3 1 0 0 0 45 10.6% 3.8 SE 0 32 30 7 1 0 0 0 70 16.5% 4 .5 SSE 0 21 41 1 1 0 0 0 64 15.1% 4 .4 S 0 3 0 1 0 0 0 0 4 0.9% 4.6 SSW 0 0 1 0 0 0 0 0 1 0.2% 4.1 SW 0 2 0 0 0 0 0 0 2 0.5% 1.9 WSW 0 0 1 0 0 0 0 0 1 0.2% 4.2 W 0 2 1 0 0 0 0 0 3 0.7% 3.2 WNW 0 5 0 0 0 0 0 0 5 1.2% 2.7 NW 0 5 2 0 0 0 0 0 7 1.7% 3.1 NNW 0 9 10 1 0 0 0 0 20 4.7% 4.2 I I I I I I I I I I I I I I Total% Of Total 3 246 155 16 3 0 0 0 423 0.7%58.2%36.6%3.8%0.7%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 3.6 0 12 1 2207 2208 9-26 I 3 Radioactive Release Effluent Report -RDRJFC South Texas Project Third Quarter 2010 Joint Frequency Tables I Joint Frequency Table From : 07/01/2010 00:00 To : 09/30/2010 23:00 I PRIMARY TOWER STABILITY CLASS G Wind Speed (MPH) ->Sector (i)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total% Of Avg.Total Speed N 2 9 9 0 0 0 0 0 20 11.0% 3.1 NNE 1 24 1 0 0 0 0 0 26 14.4% 2.5 NE 1 37 0 0 0 0 0 0 38 21.0% 2.0 ENE 3 15 0 0 0 0 0 0 18 9.9% 1.7 E 0 13 2 0 0 0 0 0 15 8.3% 2.0 ESE 1 4 1 0 0 0 0 0 6 3.3% 2.1 SE 0 1 1 0 0 0 0 0 2 1.1% 4.0 SSE 0 0 1 0 0 0 0 0 1 0.6% 7.2 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 1 0 0 0 0 0 0 1 0.6% 1.7 SW 1 0 0 0 0 0 0 0 1 0.6% 0.5 WSW 0 1 0 0 0 0 0 0 1 0.6% 1.3 W 0 1 1 0 0 0 0 0 2 1.1% 3.8 WNW 0 13 0 0 0 0 0 0 13 7.2% 2.3 NW 0 13 3 0 0 0 0 0 16 8.8% 2.8 NNW 0 10 10 0 0 0 0 0 20 11.0% 3.4 0 1 0 0 0 0 0 0 1 0.6% 1.6 Total% Of Total 9 143 29 16.0%0 0.0%0 0.0%0 0.0%0 0.0%0 181 5.0%79.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours Total number of hours for period 2.5 0 12 1 2207 2208 9-27 Radioactive Release Effluent Report -RDRJFCA South Texas Project Third Quarter 2010 Joint Frequency Tables Joint Frequency Table From 07/01/2010 00:00 To :09/30/2010 23:00 PRIMARY TOWER I I I ALL STABILITY CLASSES COMBINED I Wind Speed (MPH) -Sector (1)CALM-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6+Total % Of Avg.Total Speed N 2 35 33 20 0 0 0 0 90 4.1% 5.0 NNE 1 70 70 28 1 0 0 0 170 7.7% 4 .8 NE 3 96 60 24 0 0 0 0 183 8.3% 4.2 ENE 3 58 47 18 1 0 0 0 127 5.8% 4 .4 E 1 57 55 30 5 0 0 0 148 6.7% 5.2 ESE 1 40 70 52 15 0 0 0 178 8.1% 6.7 SE 0 40 127 139 33 0 0 0 339 15.4% 7.8 SSE 0 31 134 54 22 0 0 0 241 10.9% 7.0 S0 12 194 124 2 0 0 0 332 15.0% 7.0 SSW 0 11 112 13 0 0 0 0 136 6.2% 5.4 SW 1 8 40 8 0 0 0 0 57 2.6% 5.4 WSW 0 5 14 1 0 0 0 0 20 0.9% 4 .4 W 0 13 14 0 0 0 0 0 27 1.2% 3.8 WNW 0 26 10 0 0 0 0 0 36 1.6% 3.0 NW 0 33 13 1 0 0 0 0 47 2.1% 3.2 NNW 0 28 37 10 0 0 0 0 75 3.4% 4 .7 0 1 0 0 0 0 0 0 1 0.0% 1. 6 I I I 3 I~1 I I I I I I I U I Total% Of Total 12 0.5%564 25.60%0 1030 46.7%522 23.7%79 3.6%0 0.0%0 0.0%0 0.0%2207 Average speed for this table (MPH): Hours in above table with variable direction:

Total Total Total Total number of number of number of number of CALMs: Invalid hours Valid hours: hours for period 5.9 0 12 1 2207 2208 9-28 Radioactive Release Effluent Report -RDRJFC South Texas Project Joint Frequency Tables Fourth Quarter 2010 Joint Frequency Table From 10/01/2010 00:00 To : 12/31/2010 23:00 PRIMARY TOWER 9-29 Radioactive Release Effluent Report -RDRJFC South Texas Project Joint Frequency Tables Fourth Quarter 2010 Joint Frequency Table From : 10/01/2010 00:00 To : 12/31/2010 23:00 PRIMARY TOWER STABILITY CLASS A Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 0 0 0 0 0 0 0 0.0% 0.0 S 0 0 0 0 2 0 0 0 2 16.7% 13.7 SSW 0 0 0 2 1 0 0 0 3 25.0% 10.9 SW 0 0 0 4 3 0 0 0 7 58.3% 13.5 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0!I I I I 3 I I!I I I Total% Of Total 0 0 0 6 6 0 0.0%0 0.0%0 12 0.0%0.0%0.0%50.0%50.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 12.9 0 12 176 2032 2208 9-30 I E Radioactive Release Effluent Report -RDRJFC South Texas Project Fourth Quarter 2010 Joint Frequency Tables 3 Joint Frequency Table From 10/01/2010 00:00 To : 12/31/2010 23:00 I PRIMARY TOWER STABILITY CLASS B Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 1 0 0 0 1 5.0% 16.3 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 0 0 2 0 0 0 2 10.0% 15.0 5 0 0 0 7 1 0 0 0 8 40.0% 11.1 SSW 0 0 0 6 1 0 0 0 7 35.0% 10.6 SW 0 0 0 1 1 0 0 0 2 10.0% 12.8 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 Total% Of Total 0 0 0 14 6 0 0 0.0%0 20 0.0%0.0%0.0%70.0%30.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 11.7 0 12 176 2032 2208 9-31 Radioactive Release Effluent Report -RDRJFC South Texas Project Fourth Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 10/01/2010 00:00 To : 12/31/2010 23:00 PRIMARY TOWER S I STABILITY CLASS C I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 2 0 0 0 2 3.5% 14.0 NNE 0 0 0 0 1 2 0 0 3 5.3% 18.2 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 2 0 0 0 2 3.5% 14.6 ESE 0 0 0 0 2 0 0 0 2 3.5% 16.0 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 0 1 8 0 0 0 9 15.8% 14.7 S 0 0 0 10 1 0 0 0 11 19.3% 11.0 SSW 0 0 0 6 2 0 0 0 8 14.0% 10.9 SW 0 0 0 2 2 0 0 0 4 7.0% 13.9 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 1 1 0 0 0 2 3.5% 12.9 NNW 0 0 0 4 10 0 0 0 14 24.6% 13.8 I i I I I I I I I I I I Total% Of Total 0 0 0 24 42.1%31 54.4%2 3.5%0 0.0%0 57 0.0%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 13.3 0 12 176 2032 2208 9-32 I I Radioactive Release Effluent Report -RDRJFC Fourth Quarter 2010 South Texas Project Joint Frequency Tables Joint Frequency Table From : 10/01/2010 00:00 To : 12/31/2010 23:00 PRIMARY TOWER STABILITY CLASS D (2) (6) (8)1.0 18.6 32.6 +Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 2 12 33 17 0 0 0 64 9.5% 9.9 NNE 0 0 25 24 4 1 0 0 54 8.0% 8.5 NE 0 1 32 25 1 0 0 0 59 8.8% 7.5 ENE 0 0 10 15 1 0 0 0 26 3.9% 8.1 E 0 1 3 6 1 0 0 0 11 1.6% 8.9 ESE 0 1 6 17 2 0 0 0 26 3.9% 9.3 SE 0 1 11 31 16 1 0 0 60 8.9% 10.6 SSE 0 1 19 36 26 0 0 0 82 12.2% 10.7 S 0 4 45 57 14 0 0 0 120 17.9% 8.6 SSW 0 1 23 13 3 0 0 0 40 6.0% 7.5 SW 0 0 10 17 0 0 0 0 27 4.0% 8.0 wsw 0 2 2 2 0 0 0 0 6 0. 9% 5.7 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 7 1 1 0 0 0 9 1.3% 6.9 NW 0 0 3 9 2 0 0 0 14 2.1% 10.0 NNW 0 0 12 25 26 11 0 0 74 11.0% 12.6 Total% Of Total 0 14 220 311 114 13 0 0 672 0.0%2.1%32.7%46.3%17.0%1.9%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number Total number Total number Total number of of of of CALMs : Invalid hours Valid hours : hours for period 9.4 0 12 176 2032 2208 9-33 Radioactive Release Effluent Report -RDRJFC South Texas Project Fourth Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 10/01/2010 00:00 To : 12/31/2010 23:00 PRIMARY TOWER I I I STABILITY cLAss E I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 7 16 32 5 0 0 0 60 9.3% 8 .4 NNE 0 3 24 12 4 0 0 0 43 6.6% 7.3 NE 0 6 14 5 2 0 0 0 27 4 .2% 5.9 ENE 0 4 15 6 0 0 0 0 25 3.9% 5.8 E 0 6 9 5 0 0 0 0 20 3.1% 5.7 ESE 0 2 11 2 0 0 0 0 15 2.3% 5.8 SE 0 3 17 33 8 0 0 0 61 9.4% 8.5 SSE 0 4 32 70 16 1 0 0 123 19.0% 9.2 S 0 1 62 33 4 0 0 0 100 15.5% 7.2 SSW 0 6 39 15 3 0 0 0 63 9.7% 6.6 SW 0 1 7 2 0 0 0 0 10 1.5% 5.6 WSW 0 1 2 0 0 0 0 0 3 0.5% 4.6 W 0 0 2 0 0 0 0 0 2 0.3% 5.5 WNW 0 3 1 0 0 0 0 0 4 0.6% 2.7 NW 0 3 5 6 3 0 0 0 17 2.6% 8 .1 NNW 0 3 14 33 22 2 0 0 74 11.4% 10.3 I I I I I I U I U I I Total% Of Total 0 0.0%53 8.2%270 41.7%254 39.3%67 10.4%3 0.5%0 0.0%0 647 0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 7.9 0 12 176 2032 2208 9-34 I

Radioactive Release Effluent Report -RDRJFC South Texas Project Fourth Quarter 2010 Joint Frequency Tables 3 Joint Frequency Table From 10/01/2010 00:00 To : 12/31/2010 23:00 I PRIMARY TOWER STABILITY CLASS F Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-112.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 3 17 3 0 0 0 0 23 11.2% 5.9 NNE 0 6 8 8 0 0 0 0 22 10.7% 6.1 NE 2 3 6 1 0 0 0 0 12 5.9% 4.5 ENE 1 2 1 0 0 0 0 0 4 2.0% 2.4 E 0 6 6 0 0 0 0 0 12 5.9% 4.0 ESE 0 7 15 0 0 0 0 0 22 10.7% 4.2 SE 0 6 18 4 0 0 0 0 28 13.7% 5.0 SSE 0 6 21 2 0 0 0 0 29 14 .1% 4 .8 S 0 5 12 0 0 0 0 0 17 8.3% 4 .5 SSW 0 0 3 0 0 0 0 0 3 1.5% 5.3 SW 0 3 1 0 0 0 0 0 4 2.0% 3.7 WSW 0 1 1 0 0 0 0 0 2 1.0% 3.1 W 0 1 0 0 0 0 0 0 1 0.5% 2.9 WNW 0 0 1 0 0 0 0 0 1 0.5% 4.2 NW 0 1 5 2 0 0 0 0 8 3.9% 6.3 NNW 0 1 13 3 0 0 0 0 17 8.3% 6.6 Total% Of Total 3 51 128 23 0 0 0 0 205 1.5%24.9%62.4%11.2%0.0%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 5.0 0 12 176 2032 2208 9-35 Radioactive Release Effluent Report -RDRJFC South Texas Project Fourth Quarter 2010 Joint Frequency Tables Joint Frequency Table From : 10/01/2010 00:00 To : 12/31/2010 23:00 PRIMARY TOWER I I STABILITY CLASS G I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 24 16 0 0 0 0 0 40 9.5% 3.4 NNE 2 16 16 1 0 0 0 0 35 8.4% 3.8 NE 4 30 24 1 0 0 0 0 59 14.1% 3.5 ENE 1 35 7 0 0 0 0 0 43 10.3% 2.6 E 0 42 17 0 0 0 0 0 59 14.1% 3.0 ESE 0 37 10 0 0 0 0 0 47 11.2% 2.9 SE 0 31 16 0 0 0 0 0 47 11.2% 3.3 SSE 0 6 5 0 0 0 0 0 11 2.6% 3.6 S 0 1 0 0 0 0 0 0 1 0.2% 3.2 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 1 0 0 0 0 0 0 1 0.2% 1.6 WNW 0 5 1 0 0 0 0 0 6 1.4% 2.7 NW 1 22 8 0 0 0 0 0 31 7.4% 3.1 NNW 1 21 17 0 0 0 0 0 39 9.3% 3.4 I I I I I I I I U I i I Total% Of Total 9 2.1%271 64.7%137 32.7%2 0.5%0 0 0 0.0%0 419 0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 3.2 0 12 176 2032 2208 9-36 I1 I Radioactive Release Effluent Report -RDRJFCA South Texas Project Fourth Quarter 2010 Joint Frequency Tables Joint Frequency Table From :.10/01/2010 00:00 To : 12/31/2010 23:00 PRIMARY TOWER ALL STABILITY CLASSES COMBINED Wind Speed (MPH) ->Sector (i)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 36 61 68 24 0 0 0 189 9.3% 7.6 NNE 2 25 73 45 9 3 0 0 157 7.7% 7.0 NE 6 40 76 32 3 0 0 0 157 7.7% 5.5 ENE 2 41 33 21 1 0 0 0 98 4.8% 4.9 E 0 55 35 11 3 0 0 0 104 5.1% 4.5 ESE 0 47 42 19 5 0 0 0 113 5.6% 5.4 SE 0 41 62 68 24 1 0 0 196 9.6% 7.4 SSE 0 17 77 109 52 1 0 0 256 12.6% 9.1 S 0 11 119 107 22 0 0 0 259 12.7% 8.0 SSW 0 7 65 42 10 0 0 0 124 6.1% 7.4 SW 0 4 18 26 6 0 0 0 54 2.7% 8.6 WSW 0 4 5 2 0 0 0 0 11 0.5% 4.9 W 0 2 2 0 0 0 0 0 4 0.2% 3.9 WNW 0 8 10 1 1 0 0 0 20 1.0% 4.6 NW 1 26 21 18 6 0 0 0 72 3.5% 6.3 NNW 1 25 56 65 58 13 0 0 218 10.7% 9.8 Total% Of Total 12 389 755 634 31.2%224 18 0 0.0%0 2032 0.6%19.1%37.2%11.0%0.9%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 7.4 0 12 176 2032 2208 9-37 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release First Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER I I I I 9-38 I I Radioactive Release Effluent Report -RDRJFB Batch Release South Texas Project Joint Frequency Tables First Quarter 2010 Joint Frequency Table -Batch Release Hours From : 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER STABILITY CLASS A Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 0.0 0 0 0 98 98 9-39 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release First Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER I I STABILITY CLASS B I (1) (2) (6) (8)CALM 1.0 18.6 32.6 +Wind Speed (MPH) ->Sector (I)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 0 0 2 0 0 0 2 40.0% 13.7 S 0 0 0 3 0 0 0 0 3 60.0% 10.3 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 I 3 I I I I I I U I I, I Total% Of Total 0 0.0%0 0 3 2 0 0.0%0 0.0%0 5 0.0%0.0%60.0%40.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 11.7 0 0 0 98 98 9-40 I Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release First Quarter 2010 Joint Frequency Tables 3 Joint Frequency Table -Batch Release Hours From 01/01/2010 00:00 To : 03/31/2010 23:00 3 PRIMARY TOWER STABILITY CLASS C Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 0 0 2 0 0 0 2 18.2% 13.3 S 0 0 0 8 0 0 0 0 8 72.7% 10.2 SSW 0 0 0 1 0 0 0 0 1 9.1% 7.9 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 Total% Of Total 0 0.0%0 0 9 2 18.2%0 0.0%0 0.0%0 0.0%0.0%0.0%81.8%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 10.6 0 0 0 98 98 9-41 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release First Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER I I I STABILITY CLASS D I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6+Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 1 0 0 0 0 1 4.0% 10.8 SSE 0 0 1 4 4 0 0 0 9 36.0% 11.5 S 0 0 1 4 0 0 0 0 5 20.0% 8.6 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 w 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 0 0 3 0 0 3 12.0% 20.0 NNW 0 0 0 0 4 3 0 0 7 28.0% 17.3 I I I I I I I I I I I Total% Of Total 0 0 2 9 8 32.0%6 0 0 25 0.0%0.0%8.0%36.0%24.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 9-42 13.6 0 0 0 98 98 I I Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release First Quarter 2010 Joint Frequency Tables 3 Joint Frequency Table -Batch Release Hours From 01/01/2010 00:00 To : 03/31/2010 23:00 3 PRIMARY TOWER STABILITY CLASS E Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Total Avg.Speed N 0 1 0 0 0 0 0 0 1 3.0% 3.5 NNE 0 0 0 0 0 0 0 1 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 FSE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 2 4 5 0 0 0 0 11 33.3% 6.6 SSE 0 0 4 4 0 0 0 0 8 24.2% 7.6 S 0 0 5 1 0 0 0 0 6 18.2% 6.6 SSW 0 0 1 0 0 0 0 0 1 3.0% 5.4 SW 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 NNW 0 1 2 3 0 0 0 0 0 0.0% 0.0 0 0.0% 0.0 0 0.0% 0.0 0 0.0% 0.0 0 0.0% 0.0 6 18.2% 7.3 33 Total% Of Total 0 0.0%4 12.1%16 48.5%13 39.4%0 0.0%0 0.0%0 0.0%0 0.0%Average speed for this table (MPH): U I Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 9-43 6.8 0 0 0 98 98 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release First Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER STABILITY CLASS F Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 4 0 0 0 0 0 4 25.0% 6.1 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 5 0 0 0 0 0 5 31.3% 5.3 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 1 0 0 0 0 0 0 1 6.3% 3.0 WNW 0 1 0 0 0 0 0 0 1 6.3% 2.6 NW 0 0 1 0 0 0 0 0 1 6.3% 5.3 NNW 0 0 4 0 0 0 0 0 4 25.0% 4.6 I I I 3 I I I U I I I I I Total% Of Total 0 2 14 87.5%0 0.0%0 0 0 0.0%0 16 0.0%12.5%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 5.0 0 0 0 98 98 I U I 9-44 I Radioactive Release Effluent Report- RDRJFB Batch Release South Texas Project First Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER STABILITY CLAss G (6) (8)18.6 32.6 +Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 3 0 0 0 0 0 3 37.5% 3.9 SSE 0 0 0 0 0 0 0 0 0 0.0% 0.0 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 2 0 0 0 0 0 0 2 25.0% 2.8 WNW 0 0 1 0 0 0 0 0 1 12.5% 3.6 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 2 0 0 0 0 0 2 25.0% 4.1 Total% Of Total 0 2 6 75.0%0 0.0%0 0.0%0 0.0%0 0.0%0 8 0.0%25.0%0.0%0.0% 0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 3.7 0 0 0 98 98 9-45 Radioactive Release Effluent Report -RDRJFBA South Texas Project Batch Release First Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 01/01/2010 00:00 To : 03/31/2010 23:00 PRIMARY TOWER ALL STABILITY CLASSES COMBINED Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 1 4 0 0 0 0 0 5 5.1% 5.5 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 2 7 6 0 0 0 0 15 15.3% 6.3 SSE 0 0 10 8 8 0 0 0 26 26.5% 9.4 S 0 0 6 16 0 0 0 0 22 22.4% 8.9 SSW 0 0 1 1 0 0 0 0 2 2.0% 6.7 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 3 0 0 0 0 0 0 3 3.1% 2.9 WNW 0 1 1 0 0 0 0 0 2 2.0% 3.1 NW 0 0 1 0 0 3 0 0 4 4.1% 16.3 NNW 0 1 8 3 4 3 0 0 19 19.4% 10.1 I I I I I I I U I I I Total% Of Total 0 8 38 38.8%34 34.7%12 12.2%6 0 0 98 0.0%8.2%6.1%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total Total Total Total number of number of number of number of CALMs : Invalid hours Valid hours : hours for period 8.7 0 0 0 98 98 U I 9-46 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release Second Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER 9-47 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release Second Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER I I I STABILITY CLASS A I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SE 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSE 0 0 0 1 2 0 0 0 3 60.0% 15.1 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 2 0 0 0 0 2 40.0% 11.1 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 I I I I I I I I I Total% Of Total 0 0 0 3 2 0 0.0%0 0.0%0 5 0.0%0.0%0.0%60.0%40.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 9-48 13.5 0 4 0 674 674 I I I I Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release Second Quarter 2010 Joint Frequency Tables 3 Joint Frequency Table -Batch Release Hours From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER STABILITY CLASS B Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 0 0 0 0 0.0% 0.0 NNE 0 0 1 0 0 0 0 0 1 5.6% 6.8 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 3 5 0 0 8 44.4% 19.9 SE 0 0 0 0 3 1 0 0 4 22.2% 15.9 SSE 0 0 0 0 4 0 0 0 4 22.2% 15.7 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NNW 0 0 1 0 0 0 0 0 1 5.6% 7.1 Total% Of Total 0 0 2 0 10 55.6%6 0 0 18 0.0%0.0%11.1%0.0%33.3%0.0%0.0%0.0% 0.0% 11.1% 33.3% 0.0% 0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 16.6 0 4 0 674 674 9-49 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release Second Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER I I I STABILITY CLASS C I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (86)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 0 0 0 1 0 0 0 1 3.7% 13.9 NNE 0 0 0 0 0 0 0 0 0 0.0% 0.0 NE 0 0 0 0 0 0 0 0 0 0.0% 0.0 ENE 0 0 0 0 0 0 0 0 0 0.0% 0.0 E 0 0 0 0 0 0 0 0 0 0.0% 0.0 ESE 0 0 0 0 6 6 0 0 12 44.4% 19.0 SE 0 1 0 0 2 1 0 0 4 14.8% 13.1 SSE 0 0 1 0 2 0 0 0 3 11.1% 11.5 S 0 0 0 1 2 0 0 0 3 11.1% 13.0 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 0 0 0 0 0 0 0 0.0% 0.0 WNW 0 0 0 1 0 0 0 0 1 3.7% 12.4 NW 0 0 0 0 1 0 0 0 1 3.7% 13.9 NNW 0 0 1 0 1 0 0 0 2 7.4% 10.4 I I I I I I I I I Total% Of Total 0 0.0%1 3.7%2 2 15 7 0 0 27 7.4%7.4%55.6%25.9%0.0%0.0%15.4 0 Average speed for this table (MPH): Hours in above table with variable direction Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 4 0 674 674 I I 9-50 I Radioactive Release Effluent Report -RDRJFB South Texas Project U Batch Release Second Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From :04/01/2010 00:00 To :06/30/2010 23:00 PRIMARY TOWER STABILITY CLASS D Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 1 4 2 3 1 0 0 11 2.8% 10.6 NNE 0 1 4 3 0 0 0 0 8 2.0% 6.9 NE 0 0 0 3 3 0 0 0 6 1.5% 12.0 ENE 0 2 2 0 0 0 0 0 4 1.0% 4.3 E 0 2 2 19 29 1 0 0 53 13.3% 12.4 ESE 0 0 10 37 47 3 0 0 97 24 .3% 12.6 SE 0 0 8 41 62 6 0 0 117 29.3% 13.0 SSE 0 0 5 35 10 0 0 0 50 12.5% 10.8 S 0 1 2 17 3 0 0 0 23 5.8% 9.3 SSW 0 3 2 0 0 0 0 0 5 1.3% 3.4 SW 0 0 0 1 0 0 0 0 1 0.3% 8.8 WSW 0 0 1 0 0 0 0 0 1 0.3% 6.1 W 0 0 0 3 0 0 0 0 3 0.8% 11.0 WNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 NW 0 0 0 2 3 1 0 0 6 1.5% 13.5 NNW 0 0 3 7 4 0 0 0 14 3.5% 9.9 Total% Of Total 0 10 2.5%43 10.8%170 42.6%1641 12 3.0%0 0.0%0 399 0.0%41.1%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 11.8 0 4 0 674 674 9-51 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release Second Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER I U I STABILITY cLAss E I Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 1 6 6 3 0 0 0 16 11.3% 8.0 NNE 0 1 1 3 0 0 0 0 5 3.5% 6.4 NE 0 2 1 0 0 0 0 0 3 2.1% 4.0 ENE 0 1 6 1 0 0 0 0 8 5.6% 6.0 E 0 1 13 3 0 0 0 0 17 12.0% 6.0 ESE 0 1 6 3 0 0 0 0 10 7.0% 6.1 SE 0 2 16 7 0 0 0 0 25 17.6% 6.4 SSE 0 0 4 10 0 0 0 0 14 9.9% 8.5 S 0 0 7 0 0 0 0 0 7 4.9% 5.8 SSW 0 2 1 0 0 0 0 0 3 2.1% 2.9 SW 0 1 0 0 0 0 0 0 1 0.7% 2.2 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 1 0 0 0 0 0 0 1 0.7% 3.1 WNW 0 1 2 0 0 0 0 0 3 2.1% 4.2 NW 0 1 9 3 0 0 0 0 13 9.2% 6.5 NNW 0 1 4 9 2 0 0 0 16 11.3% 8.7 I i I U I I I I I I U I Total% Of Total 0 16 76 45 5 0 0 0 142 0.0%11.3%53.5%31.7%3.5%0.0%0.0%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 9-52 6.7 0 4 0 674 674 I Radioactive Release Effluent Report -RDRJFBBatch Release WBatch Release Second Quarter 2010 South Texas Project Joint Frequency Tables Joint Frequency Table -Batch Release Hours From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER STABILITY CLASS F (6) (8)18.6 32.6 +Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 0 I I 0 0 0 0 0 2 7.1% 3.2 NNE 0 2 1 0 0 0 0 0 3 10.7% 3.4 NE 0 2 0 0 0 0 0 0 2 7.1% 3.3 ENE 0 0 1 0 0 0 0 0 1 3.6% 3.6 E 0 1 2 0 0 0 0 0 3 10.7% 3.7 ESE 0 2 1 0 0 0 0 0 3 10.7% 2.5 SE 0 0 5 0 0 0 0 0 5 17.9% 5.8 SSE 0 4 2 0 0 0 0 0 6 21.4% 3.5 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 SW 0 0 0 0 0 0 0 0 0 0.0% 0.0 WSW 0 0 0 0 0 0 0 0 0 0.0% 0.0 W 0 0 1 0 0 0 0 0 1 3.6% 6.2 WNW 0 0 1 0 0 0 0 0 1 3.6% 5.5 NW 0 0 1 0 0 0 0 0 1 3.6% 6.7 NNW 0 0 0 0 0 0 0 0 0 0.0% 0.0 Total% Of Total 0 0.0%12 42.9%16 0 0 0.0%0 0.0%0 0.0%0 28 57.1%0.0%0.0%0.0% 0.0%Average speed for this table (MPH): Hours in above table with variable direction

Total number of Total number of Total number of Total number of CALMs : Invalid hours Valid hours : hours for period 4.1 0 4 0 674 674 9-53 Radioactive Release Effluent Report -RDRJFB South Texas Project Batch Release Second Quarter 2010 Joint Frequency Tables Joint Frequency Table -Batch Release Hours From 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER I I I STABILITY CLASS G I Wind Speed (MPH) ->Sector (I)CALM (2)1.0-3.5 (3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 1 6 1 0 0 0 0 0 8 14.5% 1.7 NNE 0 7 0 0 0 0 0 0 7 12.7% 2.5 NE 0 3 0 0 0 0 0 0 3 5.5% 1.8 ENE 0 3 0 0 0 0 0 0 3 5.5% 1.6 E 1 4 0 0 0 0 0 0 5 9.1% 1.5 ESE 0 4 0 0 0 0 0 0 4 7.3% 1.7 SE 0 1 0 0 0 0 0 0 1 1.8% 3.1 SSE 0 1 0 0 0 0 0 0 1 1.8% 1.7 S 0 0 0 0 0 0 0 0 0 0.0% 0.0 SSW 0 1 0 0 0 0 0 0 1 1.8% 1.2 SW 0 1 0 0 0 0 0 0 1 1.8% 1.0 WSW 0 3 3 0 0 0 0 0 6 10.9% 3.8 W 0 1 2 0 0 0 0 0 3 5.5% 3.8 WNW 0 5 0 0 0 0 0 0 5 9.1% 2.0 NW 0 1 0 0 0 0 0 0 1 1.8% 3.4 NNW 2 2 2 0 0 0 0 0 6 10.9% 2.0 I I I I I I I I I I I I Total% Of Total 4 7.3%43 8 0 0.0%0 0.0%0 0.0%0 0.0%0 55 78.2%14.5%0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 9-54 2.2 0 4 0 674 674 Radioactive Release Effluent Report -RDRJFBA South Texas Project-Batch Release Second Quarter 2010 Joint Frequency Table -Batch Release Hours From : 04/01/2010 00:00 To : 06/30/2010 23:00 PRIMARY TOWER Joint Frequency Tables ALL STABILITY CLASSES COMBINED Wind Speed (MPH) ->Sector (1)CALM (2)1.0-3.5 (1) (2) (6) (8)CALM 1.0 18.6 32.6 +(3)3.6-7.5 (4)7.6-12.5 (5)12.6-18.5 (6)18.6-24.5 (7)24.6-32.5 (8)32.6 +Total % Of Avg.Total Speed N 1 9 12 8 7 1 0 0 38 5.6% 7.3 NNE 0 11 7 6 0 0 0 0 24 3.6% 5.1 NE 0 7 1 3 3 0 0 0 14 2.1% 6.9 ENE 0 6 9 1 0 0 0 0 16 2.4% 4.6 E 1 8 17 22 29 1 0 0 78 11.6% 10.0 ESE 0 7 17 40 56 14 0 0 134 19.9% 12.6 SE 0 4 29 48 67 8 0 0 156 23.1% 11.7 SSE 0 5 12 46 18 0 0 0 81 12.0% 10.2 S 0 1 9 18 5 0 0 0 33 4.9% 8.9 SSW 0 6 3 0 0 0 0 0 9 1.3% 3.0 SW 0 2 0 1 0 0 0 0 3 0.4% 4.0 WSW 0 3 4 0 0 0 0 0 7 1.0% 4.1 W 0 2 3 3 0 0 0 0 8 1.2% 6.7 WNW 0 6 3 3 0 0 0 0 12 1.8% 5.2 NW 0 2 10 5 4 1 0 0 22 3.3% 8.6 NNW 2 3 11 16 7 0 0 0 39 5.8% 8.1 Total% Of Total 4 0.6%82 12.2%147 21.8%220 32.6%196 29.1%25 3.7%0 0.0%0 674 0.0%2 1.8% 0.0%Average speed for this table (MPH): Hours in above table with variable direction Total number of CALMs : Total number of Invalid hours Total number of Valid hours : Total number of hours for period 9.9 0 4 0 674 674 9-55 PAfllfACTlIJZ rgFLt TE2N1TP2 RELASE REPORT 2010n SOUTH TEXAS PROJECT Blank Page INTENTIONALLY LEFT BLANK I I I I I U I I I I I I I I I U I

NOC-AE-11002669, Radioactive Effluent Release Report

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