ML061380172

Submittal of Plant 2005 Annual Radiological Environmental Operating Report

ML061380172
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	05/05/2006
From:	Schuster R Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML061380172 (160)

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Exelon Generation www.exeloncorp.conN Zion Station Nucear 101 Shiloh Boulevard Zion, IL 60099-2797 Tel 847-746-2084 May 5, 2006 U.S. Nuclear Regulatory Commission Attn: Document Control Washington D.C. 20555-0001 Zion Nuclear Power Station, Units 1 and 2 Facility Operating License Nos. DPR-39 and DPR-48 NRC Docket Nos. 50-295 and 50-304

Subject:

Submittal of Zion Nuclear Power Station, Unit 1 and 2 2005 Annual Radiological Environmental Operating Report.

In accordance with Technical Specification 5.7.2, "Annual Radiological Environmental Operating Report" Zion Station is submitting the 2005 Annual Radiological Environmental Operating Report for Unit 1 and 2.

Technical Specification 5.7.2 requires submittal of an Annual Radiological Environmental Operating Report before May 15 of each year. The attachment to this letter is the Annual Radiological Environmental Operating Report.

If you have any questions about this report, please contact Ken Greenlee at 847-379-2700.

Respectfully, Ronald J. Schuster Decommissioning Plant Manager Zion Nuclear Station

Attachment:

2005 Annual Radiological Environmental Operating Report '

cc:

Regional Administrator - NRC Region III

. I1e7 2S

ZION NUCLEAR POWER STATION UNITS I and 2 Annual Radiological Environmental Operating Report 1 January Through 31 December 2005 NRC Docket No: 50-295 50-304 Prepared By Teledyne Brown Engineering Environmental Services Nuclear Zion Nuclear Power Station Zion, IL 60099 April 2006

Table Of Contents I. Summary and Conclusions ................................................. 1I II. Introduction........................................................................................................................3 A. Objectives of the REMP .......... 3.........................

B. Implementation of the Objectives .................................................. 3 Ill. Program Description .................................................. 3 A. Sample Collection .................................................. 3 B. Sample Analysis .................................................. 5 C. Data Interpretation .................................................. 5 D. Program Exceptions .................................................. 7 E. Program Changes ................................................. 7 IV. Results and Discussion .................................................8 A. Aquatic Environment ......... .. .......................................8

1. Public Water .................................................. 8

2. Fish .................................................. 8

3. Sediment .................................................. 9 B. Atmospheric Environment ........................................... . . . 9

1. Airborne .................... .. 9......................

a. Air Particulates ..................................................9 C. Ambient Gamma Radiation .................................................. 10 D. Land Use Survey ................................................. 10 E. Summary of Results - Inter-laboratory Comparison Program ............................ 11

Appendices Appendix A Radiological Environmental Monitoring Report Summary Tables Table A-1 Radiological Environmental Monitoring Program Quarterly and Annual Summaries for the Zion Nuclear Power Station, 2005 Appendix B Location Designation, Distance & Direction, and Sample Collection &

Analytical Methods Tables Table B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Zion Nuclear Power Station, 2005 Table B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Zion Nuclear Power Station, 2005 Figues Figure B-1: Inner Ring TLD Locations and Fixed Air Samplers of the Zion Nuclear Power Station, 2005 Figure B-2: Fish, Water and Sediment Locations of the Zion Nuclear Power Station, 2005 Appendix C Data Tables and Figures - Primary Laboratory Tables Table C-1.1 Concentrations of Gross Beta in Public Water Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005 Table C-1.2 Concentrations of Tritium in Public Water Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005.

Table C-1.3 Concentrations of Gamma Emitters in Public Water Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005.

Table C-11.1 Concentrations of Gamma Emitters in Fish Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005.

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Table C-111.1 Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005.

Table C-IV.1 Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005.

Table C-IV.2 Monthly and Yearly Mean Values of Gross Beta Concentrations (E-3 pCi/cu meter) in Air Particulate Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005.

Table C-IV.3 Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005.

Table C-V. 1 Quarterly TLD Results for Zion Nuclear Power Station, 2005.

Table C-V.2 Mean Quarterly TLD Results for the Inner and Other Locations for Zion Nuclear Power Station, 2005.

Table C-V.3 Summary of the Ambient Dosimetry Program for Zion Nuclear Power Station, 2005.

Table C-VI.1 Summary of Collection Dates for Samples Collected in the Vicinity of Zion Nuclear Power Station, 2005.

Eigures Figure C-1 Public Water - Gross Beta - Stations Z-14 and Z-15 Collected-in the Vicinity of ZNPS, 2000.- 2005.

Figure C-2 Public Water - Gross Beta - Stations Z-1 6 and Z-1 8 Collected in the Vicinity of ZNPS, 2000 - 2005.

Figure C-3 Public Water - Tritium - Stations Z-14 and Z-15 Collected in the Vicinity of ZNPS, 2000 - 2005.

Figure C-4 Public Water - Tritium - Stations Z-1 6 and Z-1 8 Collected in the Vicinity of ZNPS, 2000 - 2005.

Figure C-5 Air Particulates - Gross Beta - Stations Z-01 and Z-02 Collected in the Vicinity of ZNPS, 2000 - 2005.

Figure C-6 Air Particulate - Gross Beta - Station Z-03 Collected in the Vicinity of ZNPS, 2000 - 2005.

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Appendix D Inter-Laboratory Comparison Program Tables Table D-1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2005 Table D-2 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2005 Table D-3 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering, 2005 Table D-4 ERA Statistical Summary Proficiency Testing Program Environmental, Inc., 2005 Table D-5 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Environmental, Inc., 2005 Appendix E Effluent Data Appendix F Meteorological Data i

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I. Summary and Conclusions This report on the Radiological Environmental Monitoring Program conducted for the Zion Nuclear Power Station (ZNPS) by Exelon covers the period 1 January 2005 through 31 December 2005. During that time period, 588 analyses were performed on 512 samples. In assessing all the data gathered for this report and comparing these results with preoperational data, it was concluded that the operation of ZNPS had no adverse radiological impact on the environment.

Public water samples were analyzed for concentrations of gross beta, tritium and gamma emitting nuclides. No fission or activation products were detected.

Gross beta and tritium activities detected were consistent with those detected in previous years.

Fish (commercially and recreationally important species) and sediment samples were analyzed for concentrations of gamma emitting nuclides. Co-60, Cs-134 and Cs-1 37 activity was detected in fish. Sediment samples had Cesium-1 37 concentrations consistent with levels observed during the preoperational years.

No Plant produced fission or activation products were found in sediment.

Air particulate samples were analyzed for concentrations of gross beta and gamma emitting nuclides. No fission or activation products were detected.

Environmental gamma radiation measurements were performed quarterly using thermoluminescent dosimeters. Levels detected were consistent with those observed in previous years.

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Intentionally left blank 2

II. Introduction The Zion Nuclear Power Station (ZNPS), consisting of two 1100 MWt pressurized water reactor owned and operated by Exelon Corporation, is located in Zion, Illinois adjacent to Lake Michigan. Unit No. I went critical in December 1973. Unit No. 2 went critical in September 1974. The plant permanently ceased operation in January of 1998 and has been permanently defueled. The site is located in northeast Illinois on the western shore of Lake Michigan, approximately 50 miles north of Chicago, Illinois.

This report covers those analyses performed by Teledyne Brown Engineering (TBE), Global Dosimetry, and Environmental Inc. (Midwest Labs) on samples collected during the period 1 January 2005 through 31 December 2005.

A. Objective of the REMP The objectives of the REMP are to:

1. Provide data on measurable levels of radiation and radioactive materials in the site environs.

2. Evaluate the relationship between quantities of radioactive material released from the plant and resultant radiation doses to individuals from principal pathways of exposure.

B. Implementation of the Objectives The implementation of the objectives is accomplished by:

1. Identifying significant exposure pathways.

2. Establishing baseline radiological data of media within those pathways.

3. Continuously monitoring those media before and during Station operation to assess Station radiological effects (if any) on man and the environment.

Ill. Program Description A. Sample Collection Samples for the ZNPS REMP were collected for Exelon Nuclear by Environmental Inc. (Midwest Labs). This section describes the general collection methods used by Environmental Inc. (Midwest Labs) to obtain environmental samples for the ZNPS REMP in 2005. Sample locations and descriptions can be found in Table B-1 and Figures B-1 and B-2, Appendix B. The sampling methods used by Environmental Inc. (Midwest Labs) are listed in Table B-2.

Aquatic Environment The aquatic environment was evaluated by performing radiological analyses on samples of public water, fish, and sediment. Two gallon water samples were collected monthly from four public water locations (Z-14, Z-15, Z-16 and Z-18). Control locations were Z-14 and Z-18. All samples were collected in new unused plastic bottles, which were rinsed at least twice with source water prior to collection. Fish samples comprising the flesh of lake trout and burbot were collected semiannually at two locations, Z-26 and Z-27, both Control locations. Sediment samples composed of recently deposited substrate were collected at one location semiannually, Z-25.

Atmospheric Environment The atmospheric environment was evaluated by performing radiological analyses on samples of air particulates. Airborne particulate samples were collected and analyzed weekly at three locations (Z-01, 2-02 and Z-03). No control location was required. Airborne particulate samples were obtained at each location, using a vacuum pump with glass fiber filters attached. The pumps were run continuously and sampled air at the rate of approximately one cubic foot per minute. The filters were replaced weekly and sent to the laboratory for analysis.

Ambient Gamma Radiabton Direct radiation measurements were made using 2 CaF 200 and 2 LiF 100 LiF 4-chip Harshaw thermoluminescent dosimeters (TLD). Each location consisted of 2 TLD sets. The TLD locations were placed on and around the ZNPS site at the following loations:

Z-101, Z-102, Z-103, Z-104, Z-105, Z-106, Z-107, Z-108, Z-110, Z-1 1, Z-112, Z-113, Z-114, Z-115, Z-301, Z-01, Z-02 and Z-03.

No control location was required.

The specific TLD locations were determined by the following criteria:

1. The presence of relatively dense population;

2. Site meteorological data taking into account distance and elevation for each of the sixteen-22 1/2 degree sectors around the site, where estimated annual dose from ZNPS, if any, would be most significant;

3. On hills free from local obstructions and within sight of the vents (where practical);

4. And near the closest dwelling to the vents in the prevailing downwind direction.

(Two TLDs - each comprised of two CaF 2 200 and 2 LiF 100 LiF 4-chip thermoluminescent phosphors enclosed in plastic - were placed at each location in a PVC conduit located approximately four to eight feet above ground level. The TLDs were exchanged quarterly and sent to Global Dosimetry for analysis.

B. Sample Analysis This section describes the general analytical methodologies used by TBE and Environmental Inc. (Midwest Labs) to analyze the environmental samples for radioactivity for the ZNPS REMP in 2005. The analytical procedures used by the laboratories are listed in Table B-2.

In order to achieve the stated objectives, the current program includes the following analyses:

1. Concentrations of beta emitters in public water and air particulates.

2. Concentrations of gamma emitters in public water, air particulates, fish and sediment.

3. Concentrations of tritium in public water.

4. Ambient gamma radiation levels at various site environs.

C. Data Interpretation The radiological and direct radiation data collected prior to Zioh, Nuclear Power Station becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, Zion Nuclear Power Station was considered operational at initial criticality.

In addition, data were compared to previous years' operational data for consistency and trending. Several factors were important in the interpretation of the data:

1. Lower Limit of Detection and Minimum Detectahle Concentration The lower limit of detection (LLD) was defined as the smallest concentration of radioactive material in a sample that would yield a net count (above background) that would be detected with only a 5% probability of falsely concluding that a blank observation represents a "real" signal. The LLD was intended as a before the fact estimate of a system (including instrumentation, procedure and sample type) and not as an after the fact criteria for the presence of activity. All analyses were designed to achieve the required ZNPS detection capabilities for environmental sample analysis.

The minimum detectable concentration (MDC) is defined above with the exception that the measurement is an after the fact estimate of the presence of activity.

2. Net Activity Calculation and Reporting of Results Net activity for a sample was calculated by subtracting background activity from the sample activity. Since the REMP measures extremely small changes in radioactivity in the environment, background variations may result in sample activity being lower than the background activity effecting a negative number. An MDC was reported in all cases where positive activity was not detected.

Gamma spectroscopy results for each type of sample were grouped as follows:

For public water nine nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb/Zr-95, Cs-134, Cs-137 and Ba/La-140 were reported.

For fish nine nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, NbIZr-95, Cs-134, Cs-137 and Ba/La-140 were reported.

For sediment nine nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-95, NbIZr-95, Cs-1 34, Cs-1 37 and Ba/La-140 were reported.

For air particulate nine, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb/Zr-95, Cs-1 34, Cs-1 37 and Ba/La-140 were reported.

Means and standard deviations of the results were calculated. The standard deviations represent the variability of measured results for different samples rather than single analysis uncertainty.

D. Program Exceptions For 2005 the ZNPS REMP had a sample recovery rate in excess of 99%.

Sample anomalies and missed samples are listed in the tables below:

Table D-1 LISTING OF SAMPLE ANOMALIES Sample Location Collection Reason Type Code Date There were no anomalies for 2005.

Table D-2 LISTING OF MISSED SAMPLES Sample Location Collection Reason Type Code Date TLD Z-1 14-1 & -2 July - Sept TLD was shipped to vendor, but vendor could not find the TLDs in the shipment.

Each program exception was reviewed to understand the causes of the program exception. Sampling and maintenance errors were reviewed with the personnel involved to prevent recurrence. Occasional equipment breakdowns and power outages were unavoidable.

The overall sample recovery rate indicates that the appropriate procedures and equipment are in place to assure reliable program implementation.

E. Program Changes Beginning the third quarter 2005, Teledyne Brown Engineering Environmental Services became the primary laboratory and Environmental Inc. (Midwest Labs) became the QC laboratory. Due to the change, the data tables and summary table presented in this report will appear different from previously submitted reports. This year, only the detected and non-detected results will be presented in the data tables. ,As a result of this change, the first half of the year data tables will display LLD (Lower Limit of Detection) values for non-detected nuclides and the second half of the year data tables will display MDC (Minimum Detectable Concentration) values for non-detected nuclides. The summary table will include a longer list of gamma nuclides. The data points for non-detects in the figures will consist of LLD values for the first half of the year and MDC values for the second half of the year.

IV. Results and Discussion A. Aquatic Environment

1. Public Water Samples were taken weekly and composited monthly at four locations (Z-14, Z-15, Z-16 and Z-18). The following analyses were performed.

Samples from all locations were analyzed for concentrations of gross beta (Table C-1. 1, Appendix C). The values ranged from 1.9 pCi/I to 4.8 pCiA. Concentrations detected were consistent with those detected in previous years (Figures C-1 and C-2, Appendix C).

Tratoum Quarterly composites of weekly collections were analyzed for tritium activity (Table C-1.2, Appendix C). The values ranged from

<157 pCiA to 239 pCiA. Concentrations detected were consistent with those detected in previous years (Figures C-3 and C-4, Appendix C).

Garmma Speotrometry Samples from both locations were analyzed for gamma emitting nuclides (Table C-1.3, Appendix C). All nuclides were less than the LLD for the first half of the year and less than the MDC for the second half of the year.

2. Fish Fish samples comprised of lake trout and burbot were collected at two locations (Z-26 and Z-27) semiannually. The following analysis was performed:

Gamma Spectrometry The edible portion of fish samples from both locations was analyzed for gamma emitting nuclides (Table C- 1.1, Appendix C).

Cesium-137 was detected in one sample with an activity of 142 pCi/kg wet. All other nuclides were less than the MDC.

3. Sediment Aquatic sediment samples were collected at one location (Z-25) semiannually. The following analysis was performed:

Gamma Spectrometry Sediment samples from Z-25 were analyzed for gamma emitting nuclides (Table C-111.1, Appendix C). All nuclides were less than the MDC.

B. Atmospheric Environment

1. Airborne

a. Air Particulates Continuous air particulate samples were collected from three locations on a weekly basis. The three locations were within the ZNPS site boundary (Z-01, Z-02 and Z-03). The following analyses were performed:

Gross Rpta Weekly samples were analyzed for concentrations of beta emitters (Table C-IV.1 and C-IV.2, Appendix C).

Detectable gross beta activity was observed at all locations.

Comparison of results among the three groups aid in determining the effects, if any, resulting from the operation of ZNPS. The results from the On-Site locations ranged from

<6E-3 pCi/in 3 to 44E-3 pCi/M3 with a mean of 21 E-3 pCi/M3 .

Comparison of the 2005 air particulate data with previous years data indicate no effects from the operatiodof ZNPS.

Concentrations detected were consistent with those detected in previous years.

Gamma Spectrometry Weekly samples were composited quarterly and analyzed for gamma emitting nuclides (Table C-IV.3, Appendix C). All nuclides were less than the MDC.

C. Ambient Gamma Radiation Ambient gamma radiation levels were measured utilizing Harshaw (CaF and LF) thermoluminescent dosimeters. Thirty-seven TLD locations were established around the site. Results of TLD measurements are listed in Tables C-V.1 to C-V.3, Appendix C.

Most TLD measurements were below 25 mR/quarter, with a range of 16.0 mR/quarter to 27.0 mR/quarter.

D. Land Use Survey A Land Use Survey conducted during the May to September 2005 growing season around the Zion Nuclear Power Station (ZNPS) was performed by Environmental Inc. (Midwest Labs) for Exelon Nuclear to comply with Chapter 3 of the Zion' Offsite Dose Calculation Manual. The purpose of the survey was to document the nearest resident, milk producing animal and garden of greater than 500 ft2 in each of the sixteen 22 1/2 degree sectors around the site. There were no changes required to the ZNPS REMP, as a result of this survey. The results of this survey are summarized below.

Distance in Miles from the ZNPS Reactor Buildings Sector Residence Livestock Milk Farm Miles Miles Miles AN 2.5 B NNE -

CNE D ENE -

EE F ESE -

G SE H SSE -

JS K SSW 1.9 LSW 1.1 MWSW 1.0 NW 1.1 P WNW 1.0 QNW 1.0 R NNW 1.3 E. Summary of Results - Inter-Laboratory Comparison Program The primary and secondary laboratories analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation and water matrices for (Appendix D). The PE samples, supplied by Analytics Inc.,

Environmental Resource Associates (ERA) and DOE's Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the following pre-set acceptance criteria:

1. Analytics Evaluation Criteria Analytics' evaluation report provides a ratio of laboratory results and Analytics' known value. Since flag values are not assigned by Analytics, TBE-ES evaluates the reported ratios based on internal QC requirements, which are based on the DOE MAPEP criteria.

2. ERA Evaluation Criteria ERA's evaluation report provides an acceptance range for control and warning limits with associated flag values. ERA's acceptance limits are established per the USEPA, NELAC, state specific PT program requirements or ERA's SOP for the Generation of Performance Acceptance Limits, as applicable. The acceptance limits are either determined by a regression equation soecific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.

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3. DOE Evaluation Criteria MAPEP's evaluation report provides an acceptance range with associated flag values.

The MAPEP defines three levels of performance: Acceptable (flag =

WA"), Acceptable with Warning (flag = "W'), and Not Acceptable (flag = WNT ). Performance is considered acceptable when a mean result for the specified analyte is +/- 20% of the reference value.

Performance is acceptable with warning when a mean result falls in the range from +/-20% to +/-30% of the reference value (i.e., 20% <

bias < 30%). If the bias is greater than 30%, the results are deemed not acceptable.

For the primary laboratory, 18 out of 19 analytes met the specified acceptance criteria. One sample did not meet the specified acceptance criteria for the following reason:

1. Teledyne Brown Engineering's Analytics' September 2005 air particulate Fe-59 ratio of 1.35 exceeded the upper control limit of 1.30 due to a new technician not counting the air particulate in a petri dish.

For the secondary laboratory, 19 out of 23 analytes met the specified acceptance criteria. Four samples did not meet the specified acceptance criteria for the following reasons:

1. Environmental Inc.'s ERA's November 2005 water Gross Alpha result of 41.1 pCi/L exceeded the upper control limit of 33.4 pCi/L.

This was due to using an Am-241 efficiency instead of a Th-232 efficiency when counting the sample. Using the correct efficiency gave a result of 27.0 pCi/L.

2. Environmental Inc.'s ERA's November 2005 water Ra-228 result of 5.5 pCi/L exceeded the upper control limit of 5.0 pCi/L due to presence of radium daughters. Delay in counting 100 minutes gave a result of 4.01 pci/L.

3. Environmental Inc.'s MAPEP's January 2005 air particulate Sr-90 result of 2.2 Bqlkg exceeded the upper control limit of 1.76 Bq/kg.

Reanalysis result was 1.56 Bq/kg.

4. Environmental Inc.'s MAPEP's July 2005 soil Am-241 rksult of 48.4 Bqlkg exceeded the lower control limit of 56.77 Bqlkg due to incorrect sample weight being used in the calculation. When recalculated with the correct sample weight, the result was 97.0 Bq/kg.

The Inter-Laboratory Comparison Program provides evidence of "in control" counting systems and methods, and that the laboratories are producing accurate and reliable data.

APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT

SUMMARY

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TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 1ST QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION NUCLEAR POWER STATION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: IST QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS PUBLIC WATER GR-B 12 4 <LLD <LLD 0 (PCI/LITER)

H-3 4 200 <LLD <LLD 0 GAMMA 12 MN-54 15 <LLD <LLD 0 CO-58 15 <LLD <LLD 0 FE-59 30 <LLD <LLD 0 CO-60 15 <LLD <LLD 0 ZN-65 30 <LLD <LLD 0 ZRNB-95 30 <LLD <LLD 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 1ST QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION NUCLEAR POWER STATION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 1ST QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEANM) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LMIIT (F) (F) (F) NAME NONROUTWNE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS CS-134 15 <LLD <LLD 0 CS-137 18 <LLD <LLD 0 BALA140 15 <LLD <LLD 0 AIR PARTICULATE GR-B 39 10 25 N/A 25 Z-01 INDICATOR 0 (E-3 PC]/CU.METER) (39/39) (13/13) ONSITE 1 (13/41) (13/41) 0.3 MILES S "3 GAMMA 3 MN-54 10 <LLD N/A CO-58 10 <LLD N/A 0 FE-59 15 <LLD N/A 0 CO-60 10 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 1ST QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2095 Name of Facility: ZION NUCLEAR POWER STATION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 1ST QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS ZN-65 40 <LLD N/A 0 ZRNB-95 10 <LLD N/A 0 CS-134 10 <LLD N/A 0 CS-137 10 <LLD N/A 0 BALA140 25 <LLD N/A 0 DIRECT RADIATION TLD" QUARTERLY 34 N/A 20.1 19.2 24 Z-1 15-2 INDICATOR 0 (MILLI-ROENTGEN/QUARTER) (28/28) (6/6) (1/1)

(18/24) (17/22) (24) 0.4 MILES NW OF SITE MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2ND QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 2ND QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS PULIC WATER GR-B 12 4 <LLD <LLD 0 (PCI/LITER)

H-3 200 <LLD <LLD 0 GAMMA 12 MN-54 15 <LLD <LLD 0 CO-58 15 <LLD <LLD FE-59 30 <LLD <LLD 0 CO-60 I1 <LLD <LLD 0 ZN-65 30 <LLD <LLD 0 ZRNB-95 30 <LLD <LLD 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2ND QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 2ND QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS CS-134 15 <LLD <LLD 0 CS-137 Is <LLD <LLD 0 BALA140 15 <LLD <LLD 0 FISH GAMMA 3 (PCI/KG WET) MN-54 130 <LLD N/A CO-58 130 <LLD N/A 0 FE-59 260 <LLD N/A 0 CO-60 130 <LLD N/A 0 ZN-65 260 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2ND QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 2ND QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS ZRNB-95 N/A <LLD NiA 0 CS-134 130 <LLD N/A 0 CS-137 150 <LLD N/A 0 BALA140 N/A <LLD N/A 0 44 SEDIMENT/SILT GAMMA PCI/KG MN-54 150 <LLD N/A 0 CO-s8 100 <LLD N/A 0 FE-59 600 <LLD N/A 0 CO-60 100 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2ND QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 2ND QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS ZN-65 600 <LLD N/A 0 ZRNB-95 200 <LLD N/A 0 CS-134 ISO <LLD N/A 0 CS-137 180 <LLD N/A 0 BALA140 600 <LLD N/A 0 AIR PARTICULATE GR-B 39 10 18 N/A 19 Z-02 INDICATOR 0 (E-3 PCI/CU.METER) (39/39) (13/13) ONSITE 2 (10/36) (11/36) 0.2 MILES W

- GAMMA 3 MN-54 10 <LLD N/A 0 CO-58 10 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2ND QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER. 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 2ND QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FE-59 15 <LLD N/A 0 CO-60 10 <LLD N/A 0 ZN-65 40 <LLD N/A 0 ZRNB-95 10 <LLD N/A 0 tA CS-134 10 <LLD N/A 0 CS-137 10 <LLD N/A 0

_ BALA140 25 <LLD N/A 0 DIRECT RADIATION TLD-QUARTERLY 34 N/A 17.8 16.7 21 Z-l 12-1 INDICATOR 0 (MILLI-ROENTGEN/QUARTER) (28/28) (6/6) (1/1)

(16/21) (16/18) (21) 0.7 MILES WSW OF SITE MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 3RD QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION . DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 3RD QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS PUBLIC WATER GR-B 12 4 4.0 <LLD 4.0 Z-15 INDICATOR 0 (PCI/LITER) (1/3) (1/3) LAKE COUNTY WATER WORKS (4.0) (4.0) 1.4 MILES NNW H-3 4 200 239 <LLD 239 Z-15 INDICATOR 0 (1/2) (1/2) LAKE COUNTY WATER WORKS (239) (239) 1.4 MILES NNW GAMMA 12 MN-54 15 <LLD <LLD 0 CO-59 15 <LLD <LLD 0 FE-59 30 <LLD <LLD 0 CO-60 15 <LLD <LLD 0 ZN-65 30 <LLD <LLD 0 ZRNB-95 30 <LLD <LLD 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 3RD QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 3RD QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS CS-134 15 <LLD <LLD 0 CS.137 18 <LLD <LLD BALA140 15 <LLD <LLD 0 AIR PARTICULATE GR-B 39 10 19.1 N/A 18 Z-02 INDICATOR 0 (E-3 PCI/CU.METER) (36/39) (12/13) ONSITE 2 (8/43) (<6/40) 0.2 MILES W GAMMA 3 MN-54 10 <LLD N/A 0 CO-59 10 <LLD N/A 0 FE-59 15 <LLD N/A 0 CO-60 10 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 3RD QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 3RD QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHfEST ANNUAL MEAN(M)

MEDIUM OR LOCATIONS LOCATION TYPES OF NUMBER OF REQUIRED MEAN(M)

PATHWAY SAMPLED MEAN(M) MEAN(M) STATION #

ANALYSES ANALYSES LOWER LIMIT NUMBER OF (F) (F) (F) NAME (UNIT OF PERFORMED PERFORMED OF DETECTION NONROUTINE RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENT) REPORTED (LLD)

MEASUREMENTS ZN-65 40 <LLD N/A 0

ZRNB-95 10 <LLD N/A 0

CS-134 10 <LLD N/A 0

CS-137 10 <LLD N/A 0

BALA140 25 <LLD N/A 0

DIRECT RADIATION TLD-QUARTERLY 32 N/A 19.1 19.5 22 (MILLI-ROENTGEN/QUARTER) Z-115-1 &2INDICATOR 0 (26/26) (6/6) (1/1)

(17/22) (18/20) (22) 0.4 MILES NW OF SITE MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED ONLY (M)

LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 4TH QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 4TH QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS PUBLIC WATER GR-B 12 4 <LLD 4.8 4.8 Z-18 CONTROL 0 (PCI/LITER) (1/3) (1/3) LAKE FOREST WATER WORKS

(<157/<159) (<157/<159) 12.9 MILES S H-3 4 200 <LLD <LLD 0 GAMMA 12 MN-54 15 <LLD <LLD 0 CO-5S 15 <LLD <LLD 0 FE-59 30 <LLD <LLD 0 CO-60 15 <LLD <LLD 0 ZN-65 30 <LLD <LLD 0 ZRNB-95 30 <LLD <LLD 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 4TH QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 4TH QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREIENTS CS-134 15 <LLD <LLD 0 CS-137 18 <LLD <LLD 0 BALA140 15 <LLD <LLD 0 FISH GAMMA 3 (PCI/KG WET) MN-54 130 <LLD <LLD 0 CO-5R 130 <LLD <LLD 0 FE-59 260 <LLD <LLD 0 CO-60 130 <LLD <LLD 0 ZN-65 260 <LLD <LLD 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 4TH QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 4TH QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS ZRNB-95 N/A <LLD <LLD CS-134 130 <LLD <LLD CS-137 150 142 <LLD 142 Z-27 INDICATOR 0 (1/2) (1/2) LAKE MICHIGAN FARSITE 142 142 10.1 MILES N BALA140 N/A <LLD <LLD 0 w SEDIMENT GAMMA I (PCI/KG DRY) MN-54 150 <LLD N/A 0 CO-58 100 <LLD N/A 0 FE-59 600 <LLD N/A CO-60 100 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 4TH QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 4TH QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS ZN-65 600 <LLD N/A 0 ZRNB-95 200 <LLD N/A 0 CS-134 150 <LLD N/A 0 CS-137 180 <LLD N/A 0 BALA140 600 <LLD N/A 0 AIR PARTICULATE GR-B 38 10 20 N/A 22 Z-01 INDICATOR 0 (E-3 PCI/CU.METER) (38/38) (13/13) ONSITE 1 (6/44) (7/44) 0.3 MILES S GAMMA 3 MN-54 10 <LLD N/A 0 CO-58 10 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 4TH QUARTER

SUMMARY

FOR THE ZION NUCLEAR POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: 4TH QUARTER 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FE-59 15 <LLD N/A 0 CO-60 10 <LLD N/A 0 ZN-65 40 <LLD N/A 0 ZRNB-95 10 <LLD N/A 0 CS-134 10 <LLD N/A 0 CS-137 10 <LLD N/A 0 BALA140 25 <LLD N/A 0 DIRECT RADIATION TLD-QUARTERLY 34 N/A 22.1 21.2 26 Z-115-1 INDICATOR 0 (MILLI-ROENTGEN/QUARTER) (28/28) (6/6) (1/1)

(19/26) (20/23) (26) 0.4 MILES NW OF SITE MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE ZION NUCLER POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50.295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: ANNUAL 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT (LLD) MEASUREMENTS PUBLIC WATER GR-B 48 4 4.0 4.8 4.8 Z-18 CONTROL 0 (PCI/LJTER) (1/24) (n4) (1/24) LAKE FOREST WATER WORKS (4.0) (4.8) (4.8) 12.9 MILES S H-3 16 200 239 <LLD 239 Z-15 INDICATOR 0 (1/4) (1/4) LAKE COUNTY WATER WORKS (4.0) (4.0) 1.4 MILES NNW GAMMA 48 MN-54 15 <LLD <LLD 0 CO-58 15 <LLD <LLD 0 FE-59 30 <LLD <LLD 0 CO-60 15 <LLD <LLD ZN-65 30 <LLD <LLD 0 ZRNB-95 30 <LLD <LLD 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE ZION NUCLER POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: ANNUAL 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS CS-134 15 <LLD <LLD 0 CS-137 18 <LLD <LLD 0 BALA140 15 <LLD <LLD 0 FISH GAMMA 6 (PCI/KG WET) MN-54 130 <LLD N/A 0 CO-58 130 <LLD N/A 0 FE-59 260 <LLD N/A CO-60 130 <LLD N/A 0 ZN-65 260 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE ZION NUCLER POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: ANNUAL 2005 INDICATOR CONTROL LOCATION WITII HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBEROF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS ZRNR.95 N/A <LLD N/A 0 CS-134 100 <LLD N/A 0 CS-137 150 142 N/A 142 Z-27 INDICATOR 0 (1/2) (1/2) LAKE MICHIGAN FARSITE 142 142 10.1 MILES N BALA140 N/A <LLD N/A 0 SEDIMENT GAMMA 2 (PCI/KG DRY) MN-54 150 <LLD N/A 0 CO-58 100 <LLD N/A 0 FE-59 600 <LLD N/A 0 CO-60 100 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE ZION NUCLER POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: ANNUAL 2005 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS ZN-65 600 <LLD N/A 0 ZRNB-95 200 <LLD N/A 0 CS-134 150 <LLD N/A 0 CS-137 180 <LLD N/A 0 BALA140 600 <LLD N/A 0 AIR PARTICULATE GR-B 156 10 21 N/A 21 Z-01 INDICATOR 0 (E-3 PCIICU.METER) (153/156) (51/52) ONSITE I (6/44) (7/44) 0.3 MILES S

-- GAMMA 12 MN-54 10 <LLD N/A 0 CO-58 10 <LLD N/A 0 MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE ZION NUCLER POWER STATION, 2005 Name of Facility: ZION DOCKET NUMBER: 50-295 & 50-304 Location of Facility: ZION, IL REPORTING PERIOD: ANNUAL 2005 INDICATOR CONTROL LOCATION WTII HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FE-59 15 <LLD N/A 0 CO-60 10 <LLD N/A 0 ZN-65 40 <LLD N/A 0 ZRNB-95 10 <LLD N/A 0 CS-134 10 <LLD N/A 0 CS-137 10 <LLD N/A 0 BALA140 25 <LLD N/A DIRECT RADIATION TLD-QUARTERLY 134 N/A 19.8 19.1 26 Z-115-1 INDICATOR 0 (MILLI-ROENTGEN/QUARTER) (110/1 10) (24/24) (1/1)

(16/26) (16/23) (26) 0.4 MILES NW OF SITE MEAN AND RANGE BASED ON DETECTABLE MEASUREMENTS ONLY (M)

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

APPENDIX B LOCATION DESIGNATION, DISTANCE & DIRECTION, AND SAMPLE COLLECTION & ANALYTICAL METHODS

TABLE B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Zion Nudear Power Station, 2005 Location Location Description Distance & Direction From Site A Public Watlr Z-14 Kenosha Water Works (control) 10.0 miles N Z-15 Lake County Water Works (indicator) 1.4 miles NNW Z-16 Waukegan Water Works (indicator) 6.1 miles S Z-18 Lake Forest Water Works (control) 12.9 miles S R. Air ParticItlntps Z-01 Onsite 1 (indicator) 0.3 miles S Z-02 Onsite 2 (indicator) 0.2 miles W Z-03 Onsite 3 (indicator) 0.2 miles NNW Z-26 Lake Michigan Nearsite (indicator) At station Z-27 Lake Michigan Farsite (indicator) 10.1 miles N D Sediment Z-25 Lake Michigan, Illinois Beach State Park 0.2 miles S (indicator)

F Environmental Mosimptry - TIL tnner Ring Z-101-1 and-2 0.2 miles N Z-102-1 and -2 0.2 miles NNE Z-103-1 and -2 0.2 miles NE Z-104-1 and -2 0.1 miles ENE Z-105-1 and-2 0.1 miles E Z-106-1 and -2 0.1 miles ESE Z-107-1 and -2 0.1 miles SE Z-1 08-1 and -2 0.1 miles SSE Z-1 10-1 and -2 0.2 miles SSW Z-111-1 and-2 0.3 miles SW Z-112-1 and -2 0.7 miles WSW Z-113-1 and-2 0.6 miles W Z-114-1 and-2 0.6 miles WNW Z-1 15-1 and -2 0.4 miles NW Z-301-1 and -2 0.5 miles NW Z-01-1 and -2 Onsite 1 (indicator) 0.3 miles S Z-02-1 and -2 Onsite 2 (indicator) 0.2 miles W Z-03-1 and -2 Onsite 3 (indicator) 0.2 miles NNW B-1

TABLE B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Zion Nuclear Power Station, 2005 Sample Analysis Sampling Method Analytical Procedure Number Medium Public Water Gamma Spectroscopy Monthly composite from TBE, TBE-2007 Gamma emitting radioisotope weekly grab samples. analysis Env. Inc., GS-01 Determination of gamma emitters bv gamma spectroscopv Public Water Gross Beta Monthly composite from TBE, TBE-2008 Gross Alpha and/or gross beta weekly grab samples. activity in various matrices Env. Inc., W(DS)-01 Determination of gross alpha and/or gross beta inwater (dissolved solids or total residue)

Public Water Tritium Quarterly composite from TBE, TBE-2011 Tritium analysis in drinking water by weekly grab samples. liquid scintillation Env. Inc., T-02 Determination of tritium inwater (direct method)

Fish Gamma Spectroscopy Semi-annual samples TBE-2007 Gamma emitting radioisotope analysis collected via electroshocking or other techniques Env. Inc., GS-01 Determination of gamma emitters

_ by gamma spectroscopv Sediment Gamma Spectroscopy Semi-annual grab samples TBE, TBE-2007 Gamma emitting radioisotope analysis Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopv Air Gross Beta One-week composite of TBE, TBE-2008 Gross Alpha and/or gross beta Particulates continuous air sampling activity invarious matrices through glass fiber filter paper Env. Inc., AP-02 Determination of gross alpha and/or aross beta in air particulate filters Air Gamma Spectroscopy Quarterly composite of each TBE, TBE-2007 Gamma emitting radioisotope Particulates station analysis Env. Inc.. GS-Oi Determination of gamma emitters by gamma soectroscoov TLD Thermoluminescence Quarterly TLDs comprised of Global Dosimetry Dosimetry two CaF 200 and two LiF 100 UF 4-chip Harshaw elements.

l B-2

r$Ut iom kwft~t v1W TLOtadws 4!j

• Tw MitoI wan Fid1Air 5

4 Amr8*ff~vLOcatn WM2 ONE.ibMaWuid¢ I

Figure B-1 Inner Ring TLD Locations and Fixed Air Samplers of the Zion Nuclear Power Station, 2005 B-3

• SAx4e Lochla

[ inSl. V*WaWil 16 Wa At8h W*MvWatt O16L*ktUMtatv li*a Bo ardWit I

UztWig=m r Di°schr F4 Afe Wtdgn torift4rnh(C)

Figure B-2 Fish, Water and Sediment Locations of the Zion Nuclear Power Station, 2005 B-4

APPENDIX C DATA TABLES PRIMARY LABORATORY I

TABLE C-1.1 CONCENTRATIONS OF GROSS BETA IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF ZON NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD Z-14 Z-15 Z-1 8 JAN < 4.0 < 4.0 < 4.0 < 4.0 FEB < 4.0 < 4.0 < 4.0 < 4.0 MAR < 4.0 < 4.0 < 4.0 < 4.0 APR < 4.0 < 4.0 < 4.0 < 4.0 MAY < 4.0 < 4.0 < 4.0 < 4.0 JUN < 4.0 < 4.0 < 4.0 < 4.0 JUL < 4.0 < 4.0 < 4.0 < 4.0 AUG < 2.3 < 2.3 2.7 +/- 1.6 < 2.6 SEP 3.6 +/- 1.5 4.0 +/- 1.6 3.8 +/- 1.6 3.8 +/- 1.6 OCT 3.8 +/- 1.5 2.9 +/- 1.4 1.9 +/- 1.3 2.0 +/- 1.3 NOV 3.4 +/- 1.6 3.0 +/- 1.6 < 2.1 3.6 +/- 1.6 DEC 3.7 +/- 1.7 < 2.2 2.6 +/- 1.6 4.8 +/- 1.7 TABLE C-1.2 CONCENTRATIONS OF TRITIUM IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD Z-14 Z-15 Z-16 Z-1 8 JAN-MAR < 200 < 200 < 200 < 200 APR-JUN < 200 < 200 < 200 < 200 JUL-SEP < 190 239 +/- 108 185 +/- 107 < 178 OCT-DEC < 159 < 159 < 157 < 157 I

DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER C-l

TABLE C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF PCI/L i 2 SIGMA STC COLLECTION MN-54 CO-58 FE-59 CO-60 ZN-65 ZRN8-95 CS- 134 CS-137 BALA140 PERIOD Z-14 JAN <15 <15

. A .

< 30 <15 < 30 <30 <15 <18 < 15 FEB <15 <15 < 30 <15 30 30 < 15 <18 < 15 MAR < 15 <15 < 30 <15 < 30 <30 < 15 <18 < 15 APR <15 <15 < 30 <15 < 30 <30 <15 <18 <15 MAY <15 <15 < 30 <15 < 30 <30 < 15 <18 < 15 JUN < 15 <15 <30 <15 < 30 <30 < 15 <18 < 15 JUL <1 <1 <3 <1 <2 <1 <1 <1 < 13 AUG <1 <1 <2 <1 <1 <1 <1 <1 <1 SEP <5 <7 < 15 <6 < 11 <5 <5 <6 < 13 OCT <4 <2 <5 <3 <9 <5 <3 <4 <13 NOV <6 <6 < 11 <6 ' 15 <6 <6 <8 < 12 DEC <7 <7 < 15 <7 < 19 <8 <10 <7 < 17 0"3~

Z-15 JAN < 15 <15 < 30 <15 < 30 < 30 < 15 < 18 < 15 FEB < 15 <15 < 30 <15 30 30 < 15 < 18 <15 MAR <15 <15 < 30 <15 < 30 <30 <15 <18 <15 APR < 15 <15 < 30 < 15 < 30 <30 < 15 <18 < 15 MAY < 15 <15 < 30 < 15 < 30 < 30 < 15 <18 <15 JUN < 15 <15 < 30 <15 < 30 < 30 < 15 <18 <15 JUL <1 <1 <4 <1 <2 <2 <1 <1 <13 AUG <2 <2 <4 <2 <4 <2 <2 <2 <4 SEP <5 <5 < 11 <5 < 12 <7 <5 <5 < 12 OCT <5 <6 < 12 <5 < 11 <7 <5 <5 <15 NOV <4 <4 <8 <5 <9 <4 <4 <5 <7 DEC <7 <7 ' 16 <6 < 18 <8 < 10 <7 < 17 DUE TO VENDOR CHANGE,< VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER

TABLE C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF PCI/L

• 2 SIGMA STC COLLECTION MN-54 CO-58 FE-59 CO-60 ZN-65 ZRNB-95 CS-134 CS-137 BALA140 PERIOD Z-16 JAN <15 I15 <30 <15 <30 <30 <15 <18 < 15 FEB <15 <15 <30 <15 30 30 c15 <18 - 15 MAR <15 <15 <30 <15 <30 <30 <15 <18 < 15 APR <15 <15 <30 <15 <30 <30 '15 18 < 15 MAY <15 <15 <30 c15 <30 <30 '15 18 < 15 JUN <15 <15 <30 c15 <30 <30 '15 <18 < 15 JUL <I <1 <4 <1 <2 <2 <1 <1 < 13 AUG <I <1 <2 <1 <2 <1 <1 <1 <2 SEP <5 '5 < 10 <5 < 10 <6 <5 <6 - 12 OCT <4 <5 < 10 <4 <9 <5 <4 <5 < 13 NOV <4 '3 <6 <5 <6 <3 <3 <4 < 5 DEC <6 <7 '17 <6 <15 <7 <7 <7 < 16 w

Z-18 JAN <15 <15 < 30 < 15 < 30 <30 <15 18 c 15 FEB <15 <15 < 30 < 15 30 30 <15 <18 < 15 MAR <15 <15 < 30 < 15 < 30 '30 <15 18 < 15 APR <15 <15 < 30 < 15 < 30 '30 <15 <18 < 15 MAY <15 <15 < 30 < 15 < 30 <30 '15 <18 < 15 JUN <15 '15 < 30 < 15 < 30 <30 <15 <18 < 15 JUL <1 <2 <4 <1 <2 <2 <1 <1 < 15 AUG <1 <1 <2 <1 <2 <1 < 1 <1 <2 SEP <4 4 < 11 <6 <9 <6 <4 <5 < 7 OCT <4 <6 < 11 <6 < 10 <7 <4 <5 < 14 NOV <4 <4 <8 <4 <8 <4 <4 <4 <6 DEC <6 <7 < 15 <6 < 12 <6 <7 <6 < 16 DUE TO VENDOR CHANGE, <VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER

TABLE C-11.1 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF PCI/KG WET I 2 SIGMA COLLECTION MN-54 CO-58 FE-59 CO-60 ZN-65 ZRNB-95 CS-134 CS-137 BALA-140 Si -c PERIOD Z-26 Lake Trout 05/18/05 < 130 < 130 < 260 < 130 < 260 NA < 130 < 150 NA Lake Trout 10/05/05 < 38 < 46 < 76 < 51 < 96 < 55 < 51 < 58 < 112 Z-27 Lake Trout 05/19/05 < 130 < 130 < 260 < 130 < 260 NA 130 < 150 i 20 NA Burbot 05/19/05 < 130 < 130 < 260 < 130 < 260 NA 130 < 150 +/- 27 NA Lake Trout 10/18/05 < 62 < 70 < 112 < 68 < 124 < 69 < 61 < 90 < 70 Burbot 10/18/05 < 59 < 71 < 152 < 48 < 139 < 68 <46 142 +/- 48 < 215 4

DUE TO VENDOR CHANGE. < VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER

TABLE Cl11.1 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF PCI/KG DRY +/- 2 SIGMA STC COLLECTION MN-54 CO-58 FE-59 CO-60 ZN-65 ZRNB-95 CS-134 CS-137 BALA-140 PERIOD Z-25 05/18/05 150 < 100 <600 100 c 600 c 200 < 150 < 180 < 600 10/05/05 < 23 c25 < 56 < 18 < 38 < 26 <18 <22 <42 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER

TABLE C-IV.1 CONCENTRATIONS OF GROSS BETA INAIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF E-3 PCI/CU METER +/- SIGMA GROUP I WEEK Z-01 Z-02 Z-03 U I -

1 41 A 4 41 +/- 4 37 +/- 4 2 31 . 4 28 +/- 4 31 +/- 4 3 31 +/- 4 34+/- 4 31 +/- 4 4 27 +/- 4 25 +/- 4 25 +/- 4 5 24 +/- 3 25 +/- 3 23 +/- 3 6 28 +/- 4 30 +/- 4 25 +/- 3 7 22 +/- 4 20 +/- 4 22 +/- 4 8 27 +/- 4 25 +/- 4 22 +/- 4 9 24 +/- 4 24 +/- 4 18+/- 4 10 22 +/- 4 20 +/- 4 21 +/- 4 11 20 +/- 3 19 +/- 3 19 3 12 13+/- 3 15 +/- 3 17+/- 3 13 21 +/- 3 18 +/- 3 19 3 16+/- 3 14 15 16 17._ 3 22+/- 3 24._ 4 21 +/- 3 19+/- 3 23 +/- 4 19 +/-

22_ 3 3

17 16+/- 3 18 +/- 4 13+/- 3 18 13+/- 3 14+/- 3 13 +/- 3 19 24 A 4 24 +/- 4 28 +/- 4 20 12._ 3 12 +/- 3 10 +/- 3 21 16+/- 3 17 +/- 4 16 +/- 3 22 11 1 3 15+/- 3 14 +/- 3 23 22 +/- 4 21 +/- 4 18 +/- 3 24 19 +/- 3 16 +/- 3 15 +/- 3 25 11 +/- 3 11 +/- 3 10 +/- 3 26 29+/- 4 36 +/- 4 32 +/- 4 27 6 c6 6 28 19+/- 5 16+/- 5 15 +/- 5 29 11 +/- 4 16+/- 5 9 4 30 13 +/- 5 9 4 9 4 31 26+/- 5 24+/- 5 21 +/- 4 32 22+/- 5 20+/- 5 20+/- 5 33 16+/- 4 13+/- 4 16+/- 4 34 13+/- 4 9 4 8 4 35 20 A 4 20+/- 4 20._ 4 36 15+/- 4 18 +/- 4 21 +/- 4 37 39 +/- 5 40 +/- 6 43 +/- 6 38 20 +/- 4 29 +/- 5 20 +/- 4 39 18 +/- 4 20 +/- 4 20 +/- 4 40 19+/- 4 22 +/- 5 18+/- 4 41 7 4 7+/-4 6 4 42 22+/- 5 17 +/- 4 17+ 4 22 A 5 43 9 3 12 +/- 4 9 3 44 20 +/- 4 16 +/- 4 23 +/- 5 45 41 +/- 13 35 12 38A 12 46 13+/- 4 14 +/- 4 12 +/- 4 47 19+/- 4 15+/- 4 16 +/- 4 48 17+/- 4 16 +/- 4 15+/- 4 49 18t 4 17 +/- 4 20 +/- 4 50 32 +/- 5 28 +/- 5 18+/- 4 51 29 +/- 5 26 +/- 5 30 +/- 5 Il 52 44+/- 6 33 +/- 5 40 +/- 5 MEAN 21 +/- 17 21 +/- 16 20 +/- 17

• THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES C-6

TABLE C-IV.2 MONTHLY AND YEARLY MEAN VALUES OF GROSS BETA CONCENTRATIONS (E-3 PCIICU METER) INAIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 ONSITE LOCATIONS COLLECTION MIN. MAX. MEAN +/-

PERIOD 2 SD m

12/29/04 - 02102/05 23 41 30 +/- 12 02/02105 - 03/02/05 18 30 24 +/- 7 03/09/05 - 03/30/05 13 21 18 +/- 5 03/30/05 - 04/27/05 13 24 19 +/- 7 04/27/05 - 06/01105 10 28 16 +/- 11 06/01/05 - 06/29/05 10 36 20 +/- 17 06/29/05 - 08/03/05 <6 26 14 +/- 13 08/03105 - 08/31/05 8 22 16 +/- 10 08/31/05 - 09/28/05 15 43 25 +/- 20 09/28/05 - 11/02/05 6 23 15 +/- 13 11/02/05 - 11/30/05 12 41 21 +/- 21 11/30/05 - 12/28/05 17 44 28 +/- 18 12/29/03 - 12/28/04 <6 44 21 +/- 11 C)

-!j

• THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES

TABLE C-IV.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF E-3 PCI/CU METER

• 2 SIGMA STC COLLECTION MN-54 CO-58 FE-59 CO-60 ZN-65 ZRNB-95 CS-134 CS-137 BALA140 PERIOD Z-01 12/29 - 03/30/05 < 10 ' 10 ' 15 < 10 < 40 ' 10 c 10 < 10 < 25 Z-01 03/30 - 06/29/05 ' 10 ' 10 < 15 < 10 < 40 ' 10 C 10 10 < 25 Z-01 06/29 - 09/28/05 < 1.7 < 1.1 ' 5.2 < 2.1 < 2.4 < 2.4 1.1 < 1.4 < 36 Z-01 09/28 - 12/28/05 < 3.1 < 3.2 <6.5 < 2.7 < 7.6 < 3.4 < 3.2 < 2.5 < 15 Z-02 12/29 03/30/05 ' 10 ' 10 < 15 < 10 < 40 ' 10 '10 < 10 < 25 Z-02 03/30 06/29/05 < 10 ' 10 < 15 < 10 < 40 ' 10 410 10 < 25 Z-02 06/29 09/28/05 < 2.3 ' 4.1 ' 13 < 2.2 < 4.4 < 3.6 < 2.0 < 1.9 < 31 Z-02 09/28 12/28/05 < 2.4 < 3.5 < 8.2 < 1.9 < 6.2 < 3.4 < 3.5 < 3.4 C 11 O Z-03 12/29 03/30/05 < 10 ' 10 < 15 ' 10 < 40 ' 10 '10 c 10 < 25 c Z-03 03/30 06/29/05 < 10 < 10 < 15 < 10 < 40 ' 10 '10 10 < 25 Z-03 06/29 09/28/05 '2.3 < 2.8 < 6.0 < 2.5 < 5.4 < 3.0 < 2.1 < 2.2 < 18 Z-03 09/28 12/28/05 < 2.2 < 3.4 < 7.3 < 2.5 < 8.2 < 3.4 < 3.0 < 2.4 < 11 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER

TABLE C-V.1 QUARTERLY TLD RESULTS FOR ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER +/- 2 STANDARD DEVIATIONS STATION MEAN JAN - MAR APR-JUN JUL-SEP OCT-DEC CODE +/- 2 S. D.

Z-01-1 N19.0 +/-3.3 19 17 19 21 Z-01-2 20.3 +/- 5.3 22 18 18 23 Z-02-1 19.3 +/- 4.4 20 16 20 21 Z-02-2 18.3 t 4.1 17 16 20 20 Z-03-1 18.8 +/- 4.4 18 16 20 21 Z-03-2 19.3 +/- 3.4 19 17 20 21 Z-1 01-1 18.3 +/- 3.4 18 16 19 20 Z-101-2 18.3 +/- 2.5 18 18 17 20 Z-102-1 20.8 +/- 4.1 23 18 21 21 Z-102-2 20.5 +/- 3.5 20 20 19 23 Z-103-1 19.5 t 2.6 19 18 20 21 Z-103-2 20.0 +/- 4.3 19 18 20 23 Z-104-1 18.3 +/- 3.4 18 16 19 20 Z-104-2 18.5 +/- 1.2 19 18 18 19 Z-105-1 19.0 +/- 5.9 21 16 17 22 Z-105-2 19.5 t 4.2 19 17 20 22 Z-106-1 18.8 +/- 5.0 19 16 18 22 Z-106-2 18.0 +/- 3.7 19 16 17 20 Z-107-1 19.8 1 3.4 20 19 18 22 Z-107-2 19.0 +/- 4.3 19 17 18 22 Z-108-1 19.3 +/- 5.5 21 16 18 22 Z-108-2 19.5 +/- 2.6 21 18 19 20 Z-110-1 19.3 55.3 19 17 18 23 Z-1 10-2 19.0 +/- 4.3 19 16 20 21 Z-111-1 19.0 +/- 4.3 19 17 18 22 Z-111-2 20.3 +/- 4.4 21 19 18 23 Z-1 12-1 21.8 t 4.4 21 21 20 25 Z-1 12-2 20.3 3.4 20 18 21 22 Z-113-1 20.0 +/- 5.2 19 17 21 23 Z-1 13-2 20.8 +/- 5.3 23 19 18 23 Z-1 14-1 21.7 +/- 5.0 22 19 (1) 24 Z-1 14-2 21.0 +/- 5.3 19 20 (1) 24 Z-1 15-1 22.5 +/- 5.8 23 19 22 26 Z-115-2 22.0 +/- 4.3 24 19 22 23 Z-301-1 22.3 3.4 24 20 22 23 Z-301-2 23.5 +/- 4.8 22 22 23 27 I

(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-9

TABLE C-V.2 MEAN QUARTERLY TLD RESULTS FOR THE INNER RING AND OTHER LOCATIONS FOR ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER +/-t 2 STANDARD DEVIATIONS OF THE STATION DATA STATION INNER RING OTHER CODE +/-2S. D.

JAN-MAR 20.3 +/- 3.6 19.2 +/- 3.4 APR-JUN 18.0 t 3.2 16.7 +/- 1.6 JUL-SEP 19.3 +/- 3.4 19.5 +/- 1.7 OCT-DEC 22.3 +/- 3.6 21.2 +/- 2.0 TABLE C-V.3

SUMMARY

OF THE AMBIENT DOSIMETRY PROGRAM FOR ZION NUCLEAR POWER STATION, 2005 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER LOCATION SAMPLES PERIOD PERIOD PERIOD MEAN ANALYZED MINIMUM MAXIMUM +/-2 S. D.

I INNER RING 118 16.0 27.0 20.0 +/- 4.7 OTHER 24 16.0 23.0 19.1 +/- 3.9 INNER RING STATIONS - Z-101-1, Z-101-2, Z-102-1, Z-102-2, Z-103-1, Z-103-2, Z-104-1, Z-104-2, Z-105-1, Z-105-2, Z-106-1, Z-106-2, Z-107-1, Z-107-2, Z-108-1, Z-108-2, Z-110-1, Z-110-2, Z-111-1, Z-111-2, Z-112-1, Z-112-2, Z-113-1, Z-113-2, Z-114-1, Z-114-2, Z-115-1, Z-115-2, Z-301-1, Z-302-2 OTHER STATIONS - Z-01-1, Z-01-2, Z-02-1, Z-02-2, Z-03-1, Z-03-2 C-10

TABLE C-VI.1

SUMMARY

OF COLLECTION DATES FOR SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 PUBLIC WATER ITRITIUM LIQUID SCINTILLATION)

COLLECTION PERIOD Z-14 Z-15 Z-16 Z-18 JAN-MAR 01/01/05 - 03/30/05 01/01/05 - 03/30/05 01/01/05 - 03/30/05 01/01/05 - 03/30/05 APR-JUN 04/06/05 - 06/29/05 04/06/05 - 06/29/05 04/06/05 - 06/29/05 04/06/05 - 06/29/05 JUL-SEP 07/06/05 - 09/28/05 07/06/05 - 09/28105 07/06/05 - 09/28/05 07/06/05 - 09/28/05 OCT-DEC 10/05/05 - 12/28/05 10/05/05 - 12/28/05 10/05/05 - 12/28/05 10/05/05 - 12/28/05 PUBLIC WATER (GROSS BETA & GAMMA SPECTROSCOPY)

COLLECTION PERIOD Z-14 Z-15 Z-16 Z-18 JAN 01/01/05 - 01/26/05 01/01/05 - 01/26/05 01/01/05 - 01/26/05 01/01/05 - 01/26/05 FEB 02/02/05 - 02/23/05 02/02/05 - 02/23/05 02/02/05 - 02/23/05 02/02/05 - 02/23/05 MAR 03/02/05 - 03/30/05 03/02/05 - 03/30/05 03/02/05 - 03/30/05 03/02/05 - 03/30/05 APR 04/06/05 - 04/27/05 04/06/05 - 04/27/05 04/06/05 - 04/27/05 04/06/05 - 04/27/05 MAY 05/04/05 - 05/25/05 05/04/05 - 05/25/05 05/04/05 - 05/25/05 05/04/05 - 05/25/05 JUN 06/01/05 - 06/29/05 06/01/05 - 06/29/05 06/01/05 - 06/29/05 06/01/05 - 06/29/05 JUL 07106/05 - 07/27/05 07/06/05 - 07/27/05 07/06/05 - 07/27/05 07/06/05 - 07/27/05 AUG 08/03/05 - 08/31/05 08/03/05 - 08/31/05 08/03/05 - 08/31/05 08/03/05 - 08/31/05 SEP 09/07/05 - 09/28/05 09/07/05 - 09/28/05 09/07/05 - 09/28/05 09/07/05 - 09/28/05 OCT 10/05/05 - 10/26/05 10/05/05 - 10/26/05 10/05/05 - 10/26/05 10/05/05 - 10/26/05 NOV 11/02/05 - 11/30/05 11/02/05 - 11/30/05 11/02/05 - 11/30/05 11/02/05 - 11/30/05 DEC 12/07/05 - 12/28/05 12/07/05 - 12/28/05 12/07/05 - 12/28/05 12/07/05 - 12/28/05 I

C-11

TABLE C-VI.1

SUMMARY

OF COLLECTION DATES FOR SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 AIR PARTICULATE (GAMMA SPECTROSCOPY)

COLLECTION Z-01 Z-02 Z-03 PERIOD JAN-MAR 12/29/04 - 03/30/05 12129/04 - 03130105 12/29/04 - 03/30/05 APR-JUN 03/30105 - 06/29/05 03/30/05 - 06/29105 03/30105 - 06129/05 JUL-SEP 06129/05 - 09/28/05 06/29/05 - 09/28/05 06/29/05 - 09/28/05 OCT-DEC 09/28105 - 12/28105 09/28/05 - 12/28105 09/28/05 - 12/28/05 AIR PARTICULATE (GROSS BETA & 1-131)

COLLECTION Z-01 Z-02 Z-03 PERIOD 1 1 &z-/u4 uIU5WM 1Uif9U4 --U51UbU05 /290UU4 - U07U75U0 2 01/05/05 - 01/12/05 01/05/05 - 01/12/05 01105/05 - 01112/05 3 01/12/05 - 01/19/05 01/12/05 - 01/19/05 01/12/05 - 01/19/05 4 01/19/04 - 01/26/05 01/19/04 - 01/26/05 01/19/04 - 01/26/05 5 01/26t04 - 0202/05 01/26/04 - 02/02105 01126/04 - 02/02/05 6 02/02/04 - 02/09/05 02/02/04 - 02/09/05 02/02/04 - 02/09/05 7 02/09/04 - 02/16/05 02109/04 - 02/16105 02/09/04 - 02116/05 8 02/16/04 - 02123105 02116/04 - 02/23/05 02/16104 - 02/23105 9 02/23/04 - 03/02105 02/23/04 - 03/02/05 02/23104 - 03/02/05 10 03/01/04 - 03/08/05 03/01/04 - 03/08/05 03/01/04 - 03/08/05 11 03/08/04 - 03/16/05 03/08/04 - 03/16/05 03/08/04 - 03/16/05 12 03/16/05 - 03/23/05 03/16/05 - 03/23/05 03/16105 - 03/23/05 13 03123/05 - 03/30/05 03/23105 - 03/30/05 03123/05 - 03/30/05 14 03/30/05 - 04/06/05 03/30/05 - 04/06/05 03/30/05 - 04/06/05 15 04/06/05 - 04/13/05 04/06/05 - 04/13/05 04/06105 - 04/13/05 16 04/13/05 - 04/20/05 04/13/05 - 04/20/05 04/13105 - 04/20/05 17 04/20105 - 04/27/05 04/20/05 - 04/27105 04/20/05 - 04/27/05 18 04127105 - 05/04105 04/27/05 - 05)04/05 04/27/05 - 05104105 19 05/04/05 - 05/11105 05/04/05 - 05/11/05 05/04/05 - 05/11/05 20 05/11/05 - 05118/05 05/11/05 - 05/18/05 05/11/05 - 05/18/05 21 05/18105 - 05/25105 05/18/05 - 05/25/05 05118105 - 05125/05 22 05/25/05 - 06/01/05 05/25/05 - 06/01/05 05/25/05 - 06/01/05 23 06/01/04 - 06/08/05 06/01/04 - 06108/05 06/01/04 - 06/08/05 24 06/08105 - 06/15105 06108105 - 06/15/05 06108/05 - 06115105 25 06/15/05 - 06/22/05 06/15/05 - 06/22/05 06/15/05 - 06/22/05 26 06/22/05 - 06/29/05 06/22/05 - 06/29105 06/22/05 - 96/29/05 27 06/29/05 - 07/06/05 06/29/05 - 07/06/05 06/29/05 - 07/06/05 28 07/06/04 - 07/13/05 07/06/04 - 07/13/05 07/06/04 - 07/13/05 29 07/13/05 - 07/20/05 07/13105 - 07/20/05 07/13/05 - 07/20/05 30 07/20/05 - 07/27/05 07/20/05 - 07/27/05 07120/05 - 07127105 31 07/27/05 - 08/03/05 07/27/05 - 08/03/05 07/27/05 - 08/03/05 32 08/03/05 - 08/10105 08/03/05 - 08/10/05 08/03105 - 08/10/05 33 08/10/05 - 08/17/05 08/10/05 - 08/17/05 08/10/05 - 08117/05 34 08/17/05 - 08124/05 08117105 - 08/24/05 08117/05 - 08/24/05 35 08/24/05 - 08/31/05 08/24/05 - 08/31/05 08/24/05 - 08/31/05 36 08/31/05 - 09/07/05 08/31/05 - 09/07/05 08/31105 - 09/07/05 37 09107/04 - 09114105 09/07/04 - 09/14105 09/07/04 - 09/14/05 38 09/14105 - 09/21/05 09/14105 - 09/21/05 09/14/05 - 09/21/05 39 09/21/05 - 09/28/05 09/21/05 - 09/28/05 09/21/05 - 09/28/05 40 09/28/05 - 10105105 09128/05 - 10/05105 09/28105 - 10/05/05 41 10/05/05 - 10/12/05 10/05/05 - 10/12/05 10/05/05 - 10/12/05 42 10/12/05 - 10/19105 10/12/05 - 10/19/05 10/12/05 - 10/19/05 43 10119105 - 10126/05 10/19/05 - 10/26/05 10119/05 - 10/26/05 44 10/26/05 - 11/02/05 10/26/05 - 11/02/05 10/26/05 - 11/02/05 45 11/02/05 - 11/09/05 11/02/05 - 11/09/05 11/02/05 - 11/09/05 46 11/09/05 - 11/16105 11/09/05 - 11/16/05 11/09/05 - 11/16/05 I

47 11/16/05 - 11/23105 11/16/05 - 11/23/05 11/16/05 - 11/23/05 48 11/23105 - 11/30/05 11/23105 - 11/30/05 11/23/05 - 11/30/05 49 11/30105 - 12107/05 11/30/05 - 1207/05 11/30/05 - 12/07/05 50 12/07/05 - 12/14/05 12/07/05 - 12/14/05 1V07/05 - 1V14/05 51 12114/05 - 12/21/05 12/14/05 - 12/21/05 1V14/05 - 12/21/05 52 12/21/05 - 12/28/05 12/21/05 - 12/28/05 12/21/05 - 12/28/05 C-12

TABLE C-VI.1

SUMMARY

OF COLLECTION DATES FOR SAMPLES COLLECTED IN THE VICINITY OF ZION NUCLEAR POWER STATION, 2005 TLD STATION JAN - MAR APR - JUN JUL - SEP OCT - DEC CODE 36S2 01/01/05 - 04101/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 36D1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10101/05 10/01/05 - 01/01/06 2E1 01/01/05 - 04/01105 04/01/05 - 07101105 07/01/05 - 10/01105 10/01/05 - 01/01/06 3S1 01101/05 - 04/01105 04/01/05 - 07101/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 4E1 01/01/05 - 04/01105 04/01/05 - 07101/05 07/01/05 - 10/01/05 10101/05 - 01/01/06 5S1 01/01/05 - 04101/05 04/01/05 - 07/01/05 07101/05 - 10/01/05 10/01/05 - 01/01/06 5H1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10101/05 10/01105 - 01/01/06 6C1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 7S1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 7E1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 9Ct 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 10S3 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 1OE1 01/01/05 - 04101/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 10F3 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 11S1 01/01/05 - 04/01/05 04/01105 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 13S2 01/01/05 - 04/01105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 13C1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10101/05 10/01/05 - 01/01/06 13E1 01/01/05 - 04/01105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 14S1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - OV01/06 15D1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 16F1 01/01/05 - 04/01/05 04/01/05 - 07/01105 07/01/05 - 10/01/05 10/01/05 - 01/01/06 17B1 01/01/05 - 04/01105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 18S2 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 19D1 01/01/05 - 04/01105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 20D1 01/01/05 - 04/01105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 20F1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 21S2 01/01/05 - 04/01105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 23S2 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 24D1 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01(06 25S2 01/01105 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 25D1 01/01/05 - 04/01/05 04101/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 26S3 01/01/05 - 04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 28D2 01/01/05 - 04/01/05 04101/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 29S1 01/01/05 - 04101/05 04101/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01101/06 29E1 01/01/05 -04/01/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 -01/01/06 31S1 01/01/05 - 04101/05 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01105 - 01/01/06 31 D1 01/01/05 - 04/01/05 04101/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 31D2 01/01/05 - 04101105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 34S2 01/01/05 - 04101105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 34E1 01/01/05 - 04/01105 04/01/05 - 07/01/05 07/01/05 - 10/01/05 10/01/05 - 01/01/06 i

C-13

FIGURE C-1 PUBLIC WATER - GROSS BETA - STATIONS Z-14 AND Z-15 COLLECTED IN THE VICINITY OF ZNPS, 2000-2004 Z:14 Kenosha Water Works 13.0 01,41-co 1243140 t231-01 1243102 . 1243143 12 0 Z146 Lake County Water Works 1030

• 10 ZS I "41 Q-M-M t2-3143 123XMM I

FIGURE C-1 (cont.)

PUBLIC WATER - GROSS BETA - STATIONS Z-14 AND Z-15 COLLECTED IN THE VICINITY OF ZNPS, 2005 Z-14 (C) Kenosha Water Works 5.0.

4.0 3.0 .

0 a.

Z-15 Lake County Water Works 5.0 0

C.

01-0-05 02-01-05 03-01-05 04-01-05 0541-05 061-05 07-01.05 08-01-05 09-01.05 10-0145 14-0145 12-0145 01-0145 DUE TO VENDOR CHANGE, VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUESIJULY THROUGH DECEMBER

FIGURE C-2 PUBLIC WATER - GROSS BETA - STATIONS Z-16 AND Z-18 COLLECTED IN THE VICINITY OF ZNPS, 2000 - 2004 Z46 Waukegan Water Works 10.0 e.o to 20 01.01.0 12-31-00 2f0 124. 141.0 1230.0 Z-1 8 Lake Forest Water Works 10 I

14 01t1.00 1241-* S23414  %"14kS 12-3044

FIGURE C-2 (cont.)

PUBLIC WATER - GROSS BETA - STATIONS Z-16 AND Z-18 COLLECTED IN THE VICINITY OF ZNPS, 2005 Z-1 6 Waukegan Water Works 5.0 4.0

.j 3.0t

-a Z-18 (C) Lake Forest Water Works 6.0 T 5.0o 4 4.0 3.0 +

1.0-0.04 01401405024145 034145 041-05 05-0145 06-0145 07-01-05 0-1-05 09-0145 10-01-05 11-0145 12-01405 01-0146 DUE TO VENDOR CHANGE, <VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER

FIGURE C-3 PUBLIC WATER - TRITIUM - STATION Z-14 AND Z-15 COLLECTED IN THE VICINITY OF ZNPS, 2000 - 2004 Z.14 (C) Kenosha Water Works 4000 300 d 20-i100.

0

-100'

-20 4 0141 .02 *4140 12.41" 1"21- 124142 1to0C4 2-15 Lake County Water Works SOO1 401 300 1

( 200 1U

-i

-100o- 1-*p 41If140 t4t.540 RI-3i-ol I i24i-M i241 12404

FIGURE C-3 (cont.)

PUBLIC WATER - TRITIUM - STATION Z-14 AND Z-15 COLLECTED IN THE VICINITY OF ZNPS, 2005 Z-14 (C) Kenosha Water Works 300 T 200 4-Cj C.,

100 4 0 p p 01-01-05 thu 03-31-05 04-01-05 thru 06-30-05 07-01-05 thru 09-30-05 10-01-05 thru 12t31I05 Z-15 Lake County Water Works 300 T 250 +

200 +

-j C, 1SO +

100 +

50s 0 00 01 01-05 thru 03-31 05 04-01-05 thru 0CO S0 07-01-OS thnu 0C OO 10-01-OS thru 12/1a105 DUE TO VENDOR CHANGE, VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER

FIGURE C-4 PUBLIC WATER - TRITIUM - STATION Z-16 AND Z-18 COLLECTED IN THE VICINITY OF ZNPS, 2000 - 2004 Zi16 Waukegan Water Works

,4001 300 100La 0I

-t100 010140 1241.00 1234141 2142 1 24 204 Z.18 (C) Lake Forest Water Works 4w 1 300 -

a 1X

-100 i p200 014100 i24i40 123141 1241-c 1241-0t 12-004 I

FIGURE C-4 (cont.)

PUBLIC WATER - TRITIUM - STATION Z-16 AND Z-18 COLLECTED IN THE VICINITY OF ZNPS, 2005 Z-1 6 Waukegan Water Works 250 T 200 -

150 -

-j C,

a.

100 +/-

50 -

A I.

W 01-01-05 Ifru 03-31-05 04-01-05 thmu06-30-05 07-01-05 thru 09-30-05 10-01-05 thru 12131/05 Z-1 8 (C) Lake Forest Water Works 250 T 200 4+

150 +

U a.

100 +

50s 0

01-01-05 thru 03-31-05 0401-05 thru 06-30-05 07-01-05 thru 09-30-05 10-01-05 tru 12131/05 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER

FIGURE C-5 AIR PARTICULATES - GROSS BETA - STATIONS Z-01 AND Z-02 COLLECTED IN THE VICINITY OF ZNPS, 2000 - 2004 Z01 Onsite No. 1, Southstde 100,0 6.0 to I 0.0]

1410 1240 1411 124"4s 12414 1230.0 Z02 Onstte No. 2, Westslde Sat el-el 1t 1X431401 *2240 -tWGu l

FIGURE C-5 (cont.)

AIR PARTICULATES - GROSS BETA - STATIONS Z-01 AND Z-02 COLLECTED IN THE VICINITY OF ZNPS, 2005 Z-01 Onsite No. 1, Southside 50.0 40.0*

30.0 0

95 20.0 u'U.

10.0-An1 -

01-01-05 02-01-05 03-01-05 04-01-05 05-01-05 06-01-05 07.01-05 06-01-05 06-01-05 10-01-05 11-45 12-01-05 01-01-06 Z-02 Onsite No. 2, Westside E

C.,

a.

DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUtS JULY THROUGH DECEMBER

FIGURE C-6 AIR PARTICULATES - GROSS BETA - STATIONS Z-03 COLLECTED IN THE VICINITY OF ZNPS, 2000 - 2004 Z.03 Onslte No. 3, Northslde 1t s.Q 014140 1Z4^..O 12141 1241.02 12.3112 I

FIGURE C-6 (cont.)

AIR PARTICULATES - GROSS BETA - STATIONS Z-03 COLLECTED IN THE VICINITY OF ZNPS, 2005 Z-03 Onsite No. 3, Northside 50.0 T 40.0 +

E

a. 30.0 .

Q 0

3Cf 20.0-10.0-0.0 01-01-05 02-01-05 03-105 041-05 05-01-06 06-01-05 07-01-05 04-01-05 09-01-5 10-01-05 11-01-05 12-0145 01-01-06 DUE TO VENDOR CHANGE., VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER I

APPENDIX D INTER-LABORATORY COMPARISON PROGRAM l

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2005 (PAGE 1 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)

March 2005 E4522-396 Milk Sr-89 pCi/L 96.9 107 0.91 A Sr-90 pCi/L 16.9 17.9 0.94 A E4523-396 Milk 1-131 pCi/L 82.7 92.3 0.90 A Ce-141 pCi/L 217 229 0.95 A Cr-51 pCi/L 314 334 0.94 A Cs-134 pCi/L 123 139 0.89 A Cs-137 pCi/L 125 130 0.96 A Co-58 pCi/L 110 115 0.96 A Mn-54 pCi/L 158 160 0.99 A Fe-59 pCi/L 118 111 1.06 A Zn-65 pCi/L 191 198 0.96 A Co-60 pCi/L 140 144 0.97 A E4525-396 AP Ce-141 pCi 150 172 0.87 A Cr-51 pCi 278 250 1.11 A Cs-134 pCi 105 104 1.01 A Cs-137 pCi 95.6 97.1 0.98 A Co-58 pCi 84.4 86.3 0.98 A Mn-54 pCi 112 120 0.93 A Fe-59 pCi 92.8 83.2 1.12 A Zn-65 pCi 162 148 1.09 A Co-60 pCi 102 108 0.94 A E4524-396 Charcoal 1-131 pCi 67.4 60.7 A June 2005 E4630-396 Milk Sr-89 pCi/L 89.4 88.1 1.01 A Sr-90 pCi/L 11.6 11.4 1.02 A E4631-396 Milk 1-131 pCi/L 82.3 86.9 0.95 A Ce-141 pCi/L 91.6 92.4 0.99 A Cr-51 pCUL 278 303 0.92 A Cs-I 34 pCi/L 81.1 95.0 0.85 A Cs-137 pCiIL 180 189 0.95 A Mn-54 pCi/L 124 125 0.99 A Fe-59 pCiUL 61.1 63.9 0.96 A Zn-65 pCi/L 156 155 1.01 A Co-60 pCi/L 136 145 0.94 A E4633-396 AP Ce-141 pCi 79.2 64.2 1.23 W Cr-51 pci 263 210 1.25 W Cs-134 pCi 69.7 66.1 1.05 A Cs-137 pci 135 131 1.03 A Mn-54 pCi 94.9 87.0 1.09 A Fe-59 pCi 48 44.4 1.09 A Zn-65 pCi 120 108 1411 A Co-60 pCI 104 101 1.03 A E4632-396 Charcoal 1-131 pCi 88.9 92.5 0.96 A D-1

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2005 (PAGE 2 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)

September 2005 E4766-396 Milk Sr-89 pCi/L 135.0 146.0 0.92 A Sr-90 pCi/L 9.7 11.5 0.84 A E4767-396 Milk 1-131 pCi/L 87.5 94.3 0.93 A Ce-141 pCi/L 203 233 0.87 A Cr-51 pCi/L 279 338 0.83 A Cs-134 pCi/L 102 122.0 0.84 A Cs-137 pCi/L 178 195 0.91 A Co-58 pCiIL 55.3 63.4 0.87 A Mn-54 pCUL 81.8 92.0 0.89 A Fe-59 pCi/L 59.9 61.0 0.98 A Zn-65 pCi/L 120 123 0.98 A Co-60 pCi/L 146 167 0.87 A E4769-396 AP Ce-141 pci 193 169 1.14 A Cr-51 pci 267 246 1.09 A Cs-134 pC! 78.4 88.8 0.88 A Cs-137 pci 166 142 1.17 A Co-58 pci 53.7 46.0 1.17 A Mn-54 pCi 81.6 66.8 1.22 W Fe-59 pci 59.6 44.3 1.35 N (1)

Zn-65 pCi 107 89.6 1.19 A Co-60 pCi 133 122 1.09 A E4768-396 Charcoal 1-131 pCi 63.9 64.2 1.00 A December 2005 E4766-396 Milk Sr-89 pCi/L 114 128 0.89 A Sr-90 pCi/L 11.6 10.3 1.13 A E4767-396 Milk 1-131 pCi/L 79.6 74.6 1.07 A Ce-141 pCi/L 202 224 0.90 A Cr-51 pCiIL 185 193 0.96 A Cs-134 pCi/L 74.9 87.3 0.86 A Cs-137 pCi/L 177 189 0.94 A Co-58 pCI/L 73.9 77.5 0.95 A Mn-54 pCi/L 152 152 1.00 A Fe-59 pCi/L 97.5 82.4 1.18 A Zn-65 pCi/L 161 154 1.05 A Co-60 pCi/L 102 I11 0.92 A E4633-396 AP Ce-141 pCi 221 201 1.10 A Cr-51 pCi 195 173 1.13 A Cs-1 34 pCi 68.4 78.3 0.87 A Cs-137 pCi 194 170 1.14 A Co-58 pCi 77.4 69.4 1.12 A Mn-54 pCi 171 137 125 W Fe-59 pCi 94.2 73.9 1.27 W Zn-65 pCi 173 138 1.25 W Co-60 pCi 109 99.1 1.10 A D-2

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2005 (PAGE 3 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)

December2005 E4632-396 Charcoal 1-131 pCi 73.3 73.3 1.00 A (1) New technician - AP not counted in petri dish resulted in high Fe-59 activity. Counting in petri dish, the Fe-59 would have been acceptable as evidenced by the 4Q05 AP recount data. NCR 06-01 (a) Teledyne Brown Engineering reported result.

(b) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/?r volumetric measurements made during standard preparation.

(c) Ratio of Teledyne Brown Engineering to Analytics results.

(d) Analytics evaluation based on TBEinternalQClimits:A= Acceptable. Reported resul falls within ratio limits of .80-1.20.

W-Acceptable with warning. ReportedresultfallswithinO.70-0.80or1.20-1.30. N = NotAcceptable. Reported result falls outside the ratio limits of < 0.70 and > 1.30.

D-3

TABLE D-2 ERA ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2005 (PAGE 1 OF 1)

Identification Reported Known Month/Year Number Media Nuclide Units Value (a) Value (b) Control Limits Evaluation (c)

May 2005 Rad 61 Water Sr-89 pCi/L 37.5 41.3 32.6 -50.0 A Sr-90 pCi/L 5.37 5.92 0.00- 14.6 A Ba-1 33 pCi/L 88.6 88.4 73.1 - 104 A Cs-134 pCi/L 70.5 78.6 69.9 - 87.3 A Cs-137 pCiIL 201 201 184 - 218 A Co-60 pCi/L 37.5 37.0 28.3 - 45.7 A Zn-65 pCi/L 122 118 97.6- 138 A Gr-A pCUL 35.5 37.0 21.0 - 53.0 A Gr-B pCi/L 35.6 34.2 25.5 - 42.9 A H-3 pCi/L 24600 24400 20200 - 28600 A Rad 61 Water 1-131 pCi/L 13.6 15.5 10.3 - 20.7 A November 2005 Rad 63 Water Sr-89 pCi/L 18.0 19.0 10.3 - 27.7 A Sr-90 pCi/L 16.6 16.0 7.37 - 24.7 A Ba-133 pCi/L 31.7 31.2 22.5 - 39.9 A Cs-1 34 pCi/L 30.8 33.9 25.2 - 42.6 A Cs-137 pCi/L 26.8 28.3 19.6 - 37.0 A Co-60 pCi/L 83.9 84.1 75.4 - 92.8 A Zn-65 pCi/L 109 105 86.8- 123 A Gr-A pCi/L 19.5 23.3 13.2 - 33.4 A Gr-B pCi/L 34.0 39.1 30.4 - 47.8 A H-3 pCi/L 12400 12200 10100- 14300 A Rad 63 Water 1-131 pCi/L 17.8 17.4 12.2'- 22.6 A (a) Teledyne Brown Engineering reported result.

(b) The ERA known value is equalto 1OO% oftheparameterpresentin the standard as determinedbygravimetric and/or volumetric measurements made during standard preparation.

(c) ERA evaluation: A=acceptable. Reported result falls within the Warning Limits. NA=not acceptable. Reported result falls outside of the Control Limits. CE=check for Error. Reported result falls within the Control Limits and outside of the Warning Limit.

D-4

TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

TELEDYNE BROWN ENGINEERING, 2005 (PAGE 1 OF 2)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Range Evaluation (c)

April 2005 05-MaW13 Water Cs-134 Bq/L 108 127 88.90- 165.10 A Cs-137 Bq/L 305 332 232.40 - 461.60 A Co-57 Bq/L 215 227 158.90 - 295.10 A Co-60 Bq/L 241 251 175.70 - 326.30 A H-3 Bq/L 283 280 196.00 - 364.00 A Mn-54 Bq/L 314 331 231.70 -430.30 A Sr-90 Bq/L 0.093 no range given (1) A Zn-65 Bq/L 509 496 347.20 - 644.80 A MaS13 Soil Cs-134 Bq/L 655 759 531.30 - 986.70 A Cs-137 Bq/L 310 315 220.50 -409.50 A Co-57 Bq/L 234 242 169.40 - 314.60 A Co-60 Bq/L 219 212 148.40 - 275.60 A Mn-54 Bq/L 512 485 339.50 - 630.50 A K-40 Bq/L 642 604 422.80 - 785.20 A Zn-65 Bq/L 890 810 567.00- 1053 A GrW13 Water Gr-A Bq/L 0.601 0.525 >0.0 - 1.05 A Gr-B Bq/L 1.54 1.67 0.84 - 2.51 A RdF13 AP Cs-134 Bq/sample 3.26 3.51 2.46 -4.56 A Cs-137 Bq/sample 2.05 2.26 1.58 - 2.94 A Co-57 Bq/sample 4.78 4.92 3.44 - 6.40 A Co-60 Bq/sample 3.02 3.03 2.12 - 3.94 A Mn-54 Bq/sample 3.31 3.33 2.33'- 4.33 A Sr-90 Bq/sample 1.15 1.35 0.95- 1.76 A Zn-65 Bq/sarnple 3.14 3.14 2.20 -4.08 A GrF13 AP Gr-A Bq/sample 0.0764 0.232 >0.0 - 0.46 A Gr-B Bq/sample 0.305 0.297 0.15 - 0.45 A April 2005 RdV13 Vegetation Cs-134 Bq/kg 5.45 5 3.50 - 6.50 A Cs-137 Bq/kg 4.80 4.1 2.88 - 5.34 A Co-57 Bq/kg 13.4 9.88 6.92 - 12.84 A*

Co-60 Bqokg 3.67 3.15 2.21 -4.10 A Mn-54 Bq/kg 6.45 5.18 3.63 - 6.73 A Sr-90 Bq/kg 1.49 1.65 1.16 - 2.15 A Zn-65 Bq/kg 7.71 6.29 4.40 - 8.18 A October 2005 05-MaW14 Water Cs-1 34 BqlL 142 167 116.90 - 217.10 A Cs-137 BqlL 302 333 233.10 -432.90 A Co-57 BqlL 251 272 190.40 - 353.60 A Co-60 BqlL 243 261 182.70 - 339.30 A H-3 Bq/L 547 527 368.90 -685.10 A Mn-54 Bq/L 383 418 292.60r 543.40 A Sr-90 Bq/L 8.75 8.98 6.29 -' 11.67 A Zn-65 BqlL 324 330 231.00 -429.00 A D-5

TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

TELEDYNE BROWN ENGINEERING, 2005 (PAGE 2 OF 2)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Range Evaluation (c)

October 2005 MaS14 Soil Cs-134 Bq/L 494 568 397.60 - 738.40 A Cs-137 Bq/L 446 439 307.30 - 570.70 A Co-57 Bq/L 506 524 366.80 - 681.20 A Co-60 Bq/L 289 287 200.90 - 373.10 A Mn-54 Bq/L 460 439 307.30 - 570.70 A K-40 Bq/L 626 604 422.80 - 785.20 A Zn-65 Bq/L 889 823 576.10 - 1070 A GrW14 Water Gr-A Bq/L 0.858 0.79 0.21 - 1.38 A Gr-B Bq/L 1.22 1.35 0.85- 1.92 A October 2005 RdF14 AP Cs-134 Bq/sample 4.11 3.85 2.70 - 5.01 A Cs-137 Bq/sample 3.16 3.23 2.26 -4.20 A Co-57 Bq/sample 6.14 6.2 4.34 - 8.06 A Co-60 Bq/sample 2.86 2.85 2.00 - 3.71 A Mn-54 Bq/sample 4.54 4.37 3.06 - 5.68 A Sr-90 Bq/sample 2.12 2.25 1.58 - 2.93 A Zn-65 Bq/sample 4.28 4.33 3.03 - 5.63 A GrF14 AP Gr-A Bq/sample 0.304 0.482 >0.0 - 0.80 A Gr-B Bq/sample 0.858 0.827 0.55 - 1.22 A RdV13 Vegetation Cs-134 Bq/kg 4.35 4.09 2.86 - 5.32 A Cs-137 Bq/kg 5.99 5.4 3.80 - 7.06 A Co-57 Bq/kg 17.0 13.30 9.31 - 17.29 W Co-60 Bq/kg 4.87 4.43 3.10 - 5.76 A Mn-54 Bq/kg 7.40 6.57 4.60 - 8.54 A Sr-90 Bq/kg 2.03 2.42 1.69 - 3.15 A Zn-65 Bq/kg 11.8 10.2 7.14- 13.26 A

• MAPEP reported the result as acceptable although the reported value of 13.4 Is higher than the acceptance range upper limit of 12.84. The acceptance range was expanded to +- 40% bias due to confusion regarding preparation process. MAPEP did not corrected the acceptance range on the report. I (1) The Sr-901n water was a MAPEP false positive test. The TBE reported result of 0.093 +/- 0.09OBqAL was the fored Sr-O activity and uncertainty, as required by MAPEP. The MDC for the sample was 0.145 pCi/L.

(a) Teledyne Brown Engineering reported result.

(b) The MAPEP known value is equal to 100%ofthe parameterpresentin the standard as determined bygravimetric and/or volumetric measurements made during standard preparation.

(c) DOEIMAPEP evaluation: A=acceptable, W=acceptable with warning, N=not acceptable.

D-6

TABLE D-4 ERA(a) STATISTICAL

SUMMARY

PROFICIENCY TESTING PROGRAM ENVIRONMENTAL, INC., 2005 (Page 1 of 2)

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resuet Result' Limits Acceptance STW-1051 02/15/05 Sr-89 28.0 +/- 1.2 29.4 20.7 - 38.1 Pass STW-1051 02/15/05 Sr-90 25.1 +/-0.7 24.4 15.7 - 33.1 Pass STW-1052 02/15/05 Ba-1 33 52.9 +/-2.8 53.4 44.2 - 62.6 Pass STW-1052 02/15/05 Co-60 54.4 +/- 0.4 56.6 47.9 - 65.3 Pass STW-1052 02/15/05 Cs-134 67.7 +/- 1.8 64.9 56.2 - 73.6 Pass STW-1052 02/15/05 Cs-137 39.6 +/- 1.8 40.2 31.5 - 48.9 Pass STW-1052 02/15/05 Zn-65 159.7 +/- 3.0 161.0 133.0 - 189.0 Pass STW-1053 02/15/05 Gr. Alpha 55.1 +/- 1.8 67.9 38.5 - 97.3 Pass STW-1053 02/15/05 Gr. Beta 46.8 +/- 1.3 51.1 38.5 - 97.3 Pass STW-1054 02/15/05 Ra-226 13.7 +/- 1.5 14.1 10.4 - 17.8 Pass STW-1054 02/15/05 Ra-228 13.3 +/- 0.6 13.7 7.8 - 19.6 Pass STW-1054 02/15/05 Uranium 5.1 +/-0.2 5.0 0.0 - 10.2 Pass STW-1055 05/17/05 Sr-89 45.1 +/-4.1 41.3 32.6 - 50.0 Pass STW-1055 05/17/05 Sr-90 7.5 +/- 0.9 5.9 0.0 - 14.6 Pass STW-1056 05/17/05 Ba-1 33 87.1 +/-2.0 88.4 73.1 - 104.0 Pass STW-1056 05/17/05 Co-60 38.4 +/- 0.8 37.0 28.3 - 45.7 Pass STW-1056 05/17/05 Cs-1 34 75.3 +/- 0.7 78.6 69.9 - 87.3 Pass STW-1056 05/17/05 Cs-137 201.0 +/- 8.4 194.0 184.0 - 218.0 Pass STW-1056 05/17/05 Zn-65 130.0 +/- 6.7 118.0 97.6 - 138.0 Pass STW-1057 05/17/05 Gr. Alpha 42.7 +/- 2.9 37.0 21.0 - 53.0 Pass STW-1057 05/17/05 Gr. Beta 34.0 +/- 0.4 34.2 25.5 - 42.9 Pass STW-1058 05/17/05 1-131 14.7 +/- 0.5 15.5 10.3 - 20.7 Pass STW-1059 05/17/05 Ra-226 6.6 +/- 0.1 7.6 5.6 - 9.5 Pass STW-1059 05/17/05 Ra-228 19.3 +/- 0.7 18.9 10.7 - 27.1 Pass STW-1059 05/17/05 Uranium 9.6 +/- 0.1 10.1 4.9 - 15.3 Pass STW-1060 05/17/05 H-3 24100.0 +/- 109.0 24400.0 20200.0 - 28600.0 Pass STW-1067 08/16/05 Sr-89 29.1 +/-3.0 28.0 19.3 - 36.7 Pass STW-1067 08/16/05 Sr-90 36.0 +/- 0.6 33.8 25.1 - 42.5 Pass STW-1068 08/16/05 Ba-133 107.0 +/- 1.7 106.0 87.7 - 124.0 Pass STW-1068 08/16/05 Co-60 15.2 +/- 0.2 13.5 4.8 - 22.2 Pass STW-1068 08/16/05 Cs-134 89.1 +/-0.3 92.1 83.4 - 101.0 Pass STW-1068 08/16/05 Cs-137 72.1 +/- 1.0 72.7 64.0 - 81.4 Pass STW-1068 08/16/05 Zn-65 67.4 +/- 1.4 65.7 54.3 - 77.1 Pass STW-1069 08/16/05 Gr. Alpha 44.3 +/- 1.5 55.7 31.6 - 79.8 Pass STW-1069 08/16/05 Gr. Beta 58.4 +/- 2.1 61.3 44.0 - 78.6 Pass STW-1070 08/16/05 Ra-226 16.6 +/- 1.5 16.6 12.3 - 20.9 Pass STW-1070 08/16/05 Ra-228 6.2 +/- 0.3 6.2 3.5 - 8.9 Pass STW-1070 08/16/05 Uranium 4.5 +/- 0.1 4.5 0.0 - 9.7 Pass I

D-7

TABLE D-4 ERA(a) STATISTICAL

SUMMARY

PROFICIENCY TESTING PROGRAM ENVIRONMENTAL, INC., 2005 (Page 1 of 2)

Concentration (pCiIL)

Lab Code Date Analysis Laboratory ERA Control Resulte Result' Limits Acceptance STW-1072 11/15/05 Sr-89 20.6 i 0.4 19.0 10.3 - 27.7 Pass STW-1072 11/15/05 Sr-90 15.0 i 0.3 16.0 7.3 - 24.7 Pass STW-1073 11/15/05 Ba-1 33 31.8 i 1.8 31.2 22.5 - 39.9 Pass STW-1073 11/15/05 Co-60 85.0

• 1.4 84.1 75.4 - 92.8 Pass STW-1073 11/15/05 Cs-1 34 37.2

• 2.1 33.9 25.2 - 42.6 Pass STW-1073 11/15/05 Cs-137 27.8 i 0.7 28.3 19.6 - 37.0 Pass STW-1073 11/15/05 Zn-65 109.0

• 1.0 105.0 86.8 - 123.0 Pass STW-1074 e 11/15/05 Gr. Alpha 41.1 i 1.2 23.3 13.2 - 33.4 Fail STW-1074 11/15/05 Gr. Beta 42.7 i 0.5 39.1 30.4 - 47.8 Pass STW-1075 11/15/05 1-131 20.5 i 0.6 17.4 12.2 - 22.6 Pass STW-1076 11/15/05 Ra-226 7.8 i 0.6 8.3 6.2 - 10.5 Pass STW-1 076 11/15/05 Ra-228 5.5 i 0.6 3.5 2.0 - 5.0 Fail STW-1076 11/15/05 Uranium 15.5 i 0.3 16.1 10.9 - 21.3 Pass STW-1077 11/15/05 H-3 12500.0 i 238.0 12200.0 10100.0 - 14300.0 Pass

• Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing Indrinking water conducted by Environmental Resources Associates (ERA).

b Unless otherwise indicated, the laboratory result Isgiven as the mean +/- standard deviation for three determinations.

C Results are presented as the known values, expected laboratory precision (1 sigma, I determination) and control limits as provided by ERA.

"The original samples were calculated using an Am-241 efficiency. The samples were spiked with Th-232. Samples were recounted and calculated using the Th-232 efficiency. Results of the recount: 27.01 +/- 2.35 pCi/L.

• Decay of short-lived radium daughters contributed to a higher counting rate. Delay of counting for 100 minutes provided better results.

The reported result was the average of the first cycle of 100 minutes, the average of the second cycie co~unts was 4.01 pCiIL D-8

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEPf ENVIRONMENTAL, INC., 2005 (Page 1 of 3)

Concentration b Known Control Lab Codev Date Analysis Laboratory result Activity Limits a Acceptance STW-1045 01/01/05 Gr. Alpha 0.45 +/-0.10 0.53 0.00 - 1.05 Pass STW-1045 01/01/05 Gr. Beta 1.90 +/- 0.10 1.67 0.84 - 2.51 Pass STW-1046 01/01/05 Am-241 1.62 t 0.12 1.72 1.20 - 2.24 Pass STW-1046 01/01/05 Co-57 239.40 +/- 1.20 227.00 158.90 - 295.10 Pass STW-1046 01/01/05 Co-60 248.70 +/- 1.00 251.00 175.70 - 326.30 Pass STW-1046 01/01/05 Cs-134 115.50 +/- 1.80 127.00 88.90 - 165.10 Pass STW-1046 01/01/05 Cs-137 328.50 t 1.70 332.00 232.40 - 431.60 Pass STW-1046 01/01/05 Fe-55 64.90 +/- 7.00 75.90 53.13 - 98.67 Pass STW-1046 01/01/05 H-3 304.00 +/- 9.70 280.00 196.00 - 364.00 Pass STW-1046 01/01/05 Mn-54 334.80 +/- 1.90 331.00 231.70 - 430.30 Pass STW-1046 01/01/05 Ni-63 7.10 +/- 1.60 9.00 0.00 - 20.00 Pass STW-1046 01/01/05 Pu-238 0.01 +/- 0.02 0.02 0.00 - 1.00 Pass STW-1046 01/01/05 Pu-239/40 2.50 t 0.14 2.40 1.68 - 3.12 Pass STW-1046 01/01/05 Sr-90 0.70 +/- 0.80 0.00 0.00 - 5.00 Pass STW-1046 01/01/05 Tc-99 43.20 t 1.40 42.90 30.03 - 55.77 Pass STW-1046 01/01/05 U-233/4 3.31 +/- 0.20 3.24 2.27 - 4.21 Pass STW-1046 01/01/05 U-238 3.38 + 0.20 3.33 2.33 - 4.33 Pass STW-1046 01/01/05 Zn-65 538.40 +/- 3.80 496.00 347.20 - 644.80 Pass STVE-1047 01/01/05 Co-57 10.60 +/- 0.20 9.88 6.92 - 12.84 Pass STVE-1047 01/01/05 Co-60 3.00 +/- 0.20 3.15 2.21 - 4.10 Pass STVE-1047 01/01/05 Cs-134 4.80 +/- 0.40 5.00 3.50 - 6.50 Pass STVE-1047 01/01/05 Cs-1 37 4.10 +/-0.30 4.11 2.88 - 5.34 Pass STVE-1047 01/01/05 Mn-54 5.10 +/-0.30 5.18 3.63 - 6.73 Pass STVE-1047 01/01/05 Zn-65 6.20 +/- 0.50 6.29 4.40 - 8.18 Pass STSO-1048 01/01/05 Am-241 96.60 t 10.00 109.00 76.30 - 141.70 Pass STSO-1048 01/01/05 Co-57 264.00 t 2.00 242.00 169.40 - 314.60 Pass STSO-1048 01/01/05 Co-60 226.50 +/- 2.20 212.00 148.40 - 275.60 Pass STSO-1048 01/01/05 Cs-134 760.60 +/- 3.70 759.00 531.30 - 986.70 Pass STSO-1048 01/01/05 Cs-137 336.20 +/- 3.60 315.00 220.50 - 409.50 Pass STSO-1048 01/01/05 K-40 663.70 +/- 18.00 604.00 422.80 - 785.20 Pass STSO-1048 01/01/05 Mn-54 541.30 t 3.90 485.00 339.50 - 630.50 Pass STSO-1048 01/01/05 Ni-63 924.30 +/- 17.20 1220.00 854.00 - 1586.00 Pass STSO-1048 01/01/05 Pu-238 0.60 +/- 0.80 0.48 0.00 - 1.00 Pass STSO-1048 01/01/05 Pu-239/40 78.00 +/- 4.80 89.50 62.65 - 116.35 Pass STSO-1048 01/01/05 Sr-90 514.60 +/- 18.70 640.00 448.00 - 832.00 Pass STSO-1048 01/01/05 U-233/4 47.90 t 4.00 62.50 43.75 - 81.25 Pass STSO-1048 01/01105 U-238 226.30 t 8.60 249.00 174.30 - 323.70 Pass STSO-1048 01/01/05 Zn-65 851.30 t 7.30 810.00 567.00 - 1053t.00 Pass STAP-1050 01/01/05 Gr. Alpha 0.11 +/- 0.03 0.23 0.00 - 0.46 Pass STAP-1050 01/01/05 Gr. Beta 0.38

• 0.05 0.30 0.15 - 0.45 Pass D-9

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEPr ENVIRONMENTAL, INC., 2005 (Page 2 of 3)

Concentration b Known Control Lab Code Date Analysis Laboratory result Activity Limits a Acceptance STAP-1049 01/01/05 Am-241 0.10 +/- 0.04 0.10 0.07 -0.13 Pass STAP-1049 01/01/05 Co-57 4.76 +/- 0.64 4.92 3.44 - 6.40 Pass STAP-1049 01/01/05 Co-60 2.84 +/- 0.22 3.03 2.12 - 3.94 Pass STAP-1049 01/01/05 Cs-134 3.54 +/- 0.37 3.51 2.46 - 4.56 Pass STAP-1049 01/01/05 Cs-137 2.20 +/- 0.27 2.26 1.58 - 2.94 Pass STAP-1049 01/01/05 Mn-54 3.15 +/-0.21 3.33 2.33 - 4.33 Pass STAP-1049 01/01/05 Pu-238 0.16 +/-0.04 0.20 0.14 - 0.25 Pass STAP-1049 01/01/05 Pu-239/40 0.17 +/- 0.02 0.17 0.14 - 0.25 Pass STAP-1049e 01/01/05 Sr-90 2.24 +/- 0.34 1.35 0.95 - 1.76 Fail STAP-1049 01/01/05 U-233/4 0.34 +/- 0.02 0.34 0.24 - 0.44 Pass STAP-1049 01/01/05 U-238 0.35 +/- 0.02 0.35 0.25 - 0.46 Pass STAP-1049 01/01/05 Zn-65 3.12 +/- 0.15 3.14 2.20 - 4.08 Pass STW-1061 07/01/05 Am-241 2.21 +/- 0.13 2.23 1.56 - 2.90 Pass STW-1061 07/01/05 Co-57 293.20 +/- 7.30 272.00 190.40 - 353.60 Pass STW-1061 07/01/05 Co-60 275.70 +/- 1.30 261.00 182.70 - 339.30 Pass STW-1061 07/01/05 Cs-134 171.80 +/-4.00 167.00 116.90 - 217.10 Pass STW-1061 07/01/05 Cs-137 342.10 +/-2.20 333.00 233.10 - 432.90 Pass STW-1061 07/01/05 Fe-55 167.80 +/- 9.30 196.00 137.20 - 254.80 Pass STW-1061 07/01/05 H-3 514.20 +/- 12.60 527.00 368.90 - 685.10 Pass STW-1061 07/01/05 Mn-54 437.00 +/- 2.50 418.00 292.60 - 543.40 Pass STW-1061 07/01/05 Ni-63 105.10 +/- 3.60 100.00 70.00 - 130.00 Pass STW-1061 07/01/05 Pu-238 1.64 +/- 0.12 1.91 1.34 - 2.48 Pass STW-1061 07/01/05 Pu-239/40 2.32 +/- 0.13 2.75 1.93 - 3.58 Pass ST1W-1061 07/01/05 Sr-90 9.20 +/- 1.30 8.98 6.29 - 11.67 Pass STW-1061 07/01/05 Tc-99 72.30 +/- 2.30 66.50 46.55 - 86.45 Pass STW-1061 07/01/05 U-233/4 4.11 +/- 0.18 4.10 2.87 - 5.33 Pass STW-1061 07/01/05 U-238 4.14 +/- 0.18 4.26 2.98 - 5.54 Pass STW-1061 07/01/05 Zn-65 364.60 +/- 4.90 330.00 231.00 - 429.00 Pass STW-1062 07/01/05 Gr. Alpha 0.57 +/- 0.05 0.79 0.21 - 1.38 Pass STW-1062 07/01/05 Gr. Beta 1.36 +/- 0.05 1.35 0.85 - 1.92 Pass STSO-1063 t 07/01/05 Am-241 48.40 +/- 3.90 81.10 56.77 - 105.43 Fail STSO-1063 07/01/05 Co-57 608.30 +/- 2.80 524.00 366.80 - 681.20 Pass STSO-1063 07/01/05 Co-60 322.70 +/- 2.40 287.00 200.90 - 373.10 Pass STSO-1063 07/01/05 Cs-134 632.10 +/- 5.20 568.00 397.60 - 738.40 Pass STSO-1063 07/01/05 Cs-137 512.40 +/- 4.20 439.00 307.30 - 570.70 Pass STSO-1063 07/01/05 K-40 720.50 +/- 19.00 604.00 422.80 - 785.20 Pass STSO-1063 07/01/05 Mn-54 516.80 +/- 5.10 439.00 307.30 - 570.70 Pass STSO-1063 07/01/05 Ni-63 366.50 +/- 13.30 445.00 311.50 - 578.50 Pass STSO-1063 07/01/05 Pu-238 68.80 +/- 15.00 60.80 42.56 - 79.04 Pass STSO-1063 07/01/05 Pu-239/40 0.00 +/- 0.00 0.00 0.00 - 0.00 '

STSO-1063 07/01/05 Sr-90 602.90 +/- 17.20 757.00 529.90 - 984.10 Pass STSO-1063 07/01/05 U-233/4 61.50 +/- 1.00 52.50 36.75 - 68.25 Pass STSO-1063 07/01/05 U-238 164.50 +/- 16.70 168.00 117.60 - 218.40 Pass STSO-1063 07/01/05 Zn-65 874.70 +/- 8.40 823.00 576.10 - 1070.00 Pass D-10

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEPt ENVIRONMENTAL, INC., 2005 (Page 3 of 3)

Concentrationb Known Control Lab Code Date Analysis Laboratory result Activity Limits a Acceptance STVE-1064 07/01/05 Am-241 0.18 +/- 0.03 0.23 0.16 - 0.30 Pass STVE-1064 07/01/05 Co-57 15.90 +/- 0.20 13.30 9.31 - 17.29 Pass STVE-1064 07/01/05 Co-60 4.80 +/- 0.10 4.43 3.10 -5.76 Pass STVE-1064 07/01/05 Cs-134 4.60 +/- 0.20 4.09 2.86 - 5.32 Pass STVE-1064 07/01/05 Cs-137 5.90 +/- 0.30 5.43 3.80 - 7.06 Pass STVE-1064 07/01/05 Mn-54 7.20 +/- 0.20 6.57 4.60 - 8.54 Pass STVE-1064 07/01/05 Pu-238 0.04 +/- 0.02 0.00 0.00 - 1.00 Pass STVE-1064 07/01/05 Pu-239/40 0.13 +/- 0.02 0.16 0.11 - 0.21 Pass STVE-1064 07/01/05 Sr-90 2.80 +/- 0.30 2.42 1.69 - 3.15 Pass STVE-1064 07/01/05 U-233/4 0.28 +/- 0.03 0.33 0.23 - 0.43 Pass STVE-1064 07/01/05 U-238 0.33 +/- 0.04 0.35 0.24 - 0.45 Pass STVE-1064 07/01/05 Zn-65 11.00 +/- 0.50 10.20 7.14 - 13.26 Pass STAP-1065 07/01/05 Gr. Alpha 0.30 +/- 0.04 0.48 0.00 - 0.80 Pass STAP-1065 07/01/05 Gr. Beta 0.97 +/- 0.06 0.83 0.55 - 1.22 Pass STAP-1066 07/01/05 Am-241 0.14 +/- 0.03 0.16 0.11 - 0.21 Pass STAP-1066 07/01/05 Co-57 5.81 +/-0.17 6.20 4.34 - 8.06 Pass STAP-1066 07/01/05 Co-60 2.79 +/- 0.14 2.85 2.00 - 3.71 Pass STAP-1066 07/01/05 Cs-134 3.67 +/- 0.12 3.85 2.70 - 5.01 Pass STAP-1066 07/01/05 Cs-1 37 2.93 +/- 0.23 3.23 2.26 - 4.20, Pass STAP-1066 07/01/05 Mn-54 4.11 +/-0.26 4.37 3.06 - 5.68 Pass STAP-1066 07/01/05 Pu-238 0.11 +/-0.02 0.10 0.07 - 0.13 Pass STAP-1066 07/01/05 Pu-239/40 0.10 +/- 0.01 0.09 0.06 - 0.12 Pass STAP-1066 07/01/05 Sr-90 2.25 +/- 0.29 2.25 1.58 - 2.93 Pass STAP-1066 07/01/05 U-233/4 0.28 +/- 0.02 0.27 0.19 - 0.35 Pass STAP-1066 07/01/05 U-238 0.28 +/- 0.02 0.28 0.20 - 0.37 Pass STAP-1066 07/01/05 Zn-65 4.11 +/- 0.26 4.33 3.06 - 5.68 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho b Results are reported In units of Bqikg (soil), BqIL (water) or Bqlotal sample (filters, vegetation) as requested by the Department of Energy.

e Laboratory codes as follows: STW (water), STAP (air filter), STSO (soil), STVE (vegetation).

d MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP. I The strontium carbonate precipitates were redissolved and processed. The average of the three analyses was 1.34 pCiUL, although the recovery was only 30%. The result of a new analysis was 1.56 pCi/L.

Incorrect sample weight used in calculation. Result of recalculation: 97.0 i 7.8 Bq/kg.

D-11

APPENDIX E EFFLUENT DATA I

TABLE OF CONTENTS INTRODUCTION....................................................................................................................1

SUMMARY

.............................................................................................................................2 1.0. EFFLUENTS.......................................................................................................3 1.1. Gaseous Effluents to the Atmosphere .............................................. 3 1.2. Liquids Released to Lake Michigan .............................................. 3 2.0. SOLID RADIOACTIVE WASTE ............ ................................. 3 3.0. DOSE TO MAN .............................................. 3 3.1. Gaseous Effluent Pathways ............................................. 3 3.1.1. Gaseous Releases ......................................... . . 4 3.1.1.1. Gamma Dose Rates .............................................. 4 3.1.1.2. Beta Air and Skin Dose Rate ...................................... 4 3.1.2. Radioactive Iodine ......................................... . .5 3.1.3. Dose to Thyroid ............................................. 5 3.2. Liquid Effluent Pathways ........................................... 5 3.3. Assessment of Dose to Member of Public ................................. . 5 4.0. SITE METEOROLOGY ................................. ... 6 j

i

Table of Contents (cont.)

APPENDIX E-1 DATA TABLES AND FIGURES............................................................. E-1.1 Station Releases Table 1.1-1 Gaseous Effluents ............................................. E-1.2 Table 1.2-1 Liquid Effluents ............................................. E-1.3 Table 2.0-1 Solid Radioactive Waste ............................................. E-1.4 Table 3.1-1 Maximum Doses Resulting from Airborne Releases ................. E-1.5 Table 3.2-1 Maximum Doses Resulting from Liquid Effluents ...................... E-1.7 Table 3.3-1 10CFR20 Compliance Assessment .......................................... E-1.8 Table 3.4-1 Maximum doses Resulting from Airborne Releases Based On Concurrent Meteorological Data .................................... E-1.9 ii

INTRODUCTION Units I and 2 of the Zion Station, located in Zion, Illinois adjacent to Lake Michigan, are 1100 MWe (3520 MWt) Westinghouse pressurized water reactors.

The plant permanently ceased operation in February of 1998 and has been permanently defueled.

The station was designed to keep releases to the environment at levels below those specified in the regulations. Historical data has been established that Zion, as a fully operational facility, did not contribute appreciable doses to the surrounding public. Sampling results for 2005 showed zero releases above background for a variety of monitored pathways, e.g. water, vegetation, air samples and TLIV.

Liquid effluents from Zion Station are released to Lake Michigan in controlled batches after radioassay of each batch and continuously through a monitored pathway. There are no routine noble gas releases. Due to decay, iodine is no longer present. The only noble gas that remains is Kr85 captured in the spent fuel assemblies stored in the fuel pool in the fuel building (1713). A new ventilation system for the FB has been installed to monitor possible releases. The results of effluent analyses are summarized on a monthly basis and reported to the Nuclear Regulatory Commission as required per Technical Specifications.

Airborne concentrations of noble gases, 1-131, and particulate radioactivity in offsite areas are calculated using effluent and meteorological data.

Environmental monitoring was conducted by sampling at indicator and control (background) locations in the vicinity of the Zion Station to measure changes in radiation or radioactivity levels that may be attributable to the station. If significant changes attributable to Zion Station are measured, these changes are correlated with effluent releases.

1

SUMMARY

Gaseous and liquid effluents for the period contributed to only a small fraction of the Station Technical Specification limits. Calculations of environmental concentrations based on effluent and meteorological data for the period indicate that consumption by the public of radionuclides attributable to the Zion Station does not exceed regulatory limits. Radiation exposure from radionuclides released to the atmosphere represented the critical pathway for the period with a maximum individual total body dose estimated to be 8.74E-04 mrem for the year, where a shielding and occupancy factor of 0.7 is assumed. The assessment of radiation doses is performed in accordance with the Exelon Offsite Dose Calculation Manual (ODCM). The results of analysis confirm that the station is operating in compliance with 10CFR50 Appendix 1, 10CFR20 and 40CFR190.

2

1.0 EFFLUENTS 1.1 Gaseous Effluents to the Atmosphere Measured concentrations and isotopic composition of noble gases, radioiodine, and particulate radioactivity released to the atmosphere during the year, are listed in Table 1.1-1. A total of O.OOE+00 microcuries of fission and activation gases was released with a maximum average release rate of O.OOE+00 pCi/sec during any one quarter period.

A total of O.OOE+00 microcuries of 1-131 was released during the year with a maximum average quarterly release rate of O.OOE+00 pCi/sec.

A total of 1.81 E+01 microcuries of beta-gamma emitters was released as airborne particulate matter with a maximum average quarterly release rate of 5.84E-07 pCi/sec. quarterly only.

Alpha-emitting radionuclides were not measurable. Also, O.OOE+00 curies of tritium were released with a maximum average quarterly release rate of O.OOE+00 VCi/sec.

1.2 Liquids Released to Lake Michigan A total of 2.95E+05 liters of liquid waste containing O.OOE+00 microcuries was discharged from the station via an approved pathway after dilution with a total of 4.37E+10 liters of water. These wastes were released at a maximum quarterly average concentration of O.OOE+00 pCi/ml. A total of O.OOE-00 curies of tritium was released. Alpha activity released totaled 0.00 pCi for the year. Monthly release estimates and principal radionuclides in liquid effluents are given in Table 1.2-1.

2.0 SOLID RADIOACTIVE WASTE There were no solid radioactive waste shipments. For more detail, refer to Zion Station 2005 Effluent Report.

3.0 DOSE TO MAN 3.1 Gaseous Effluent Pathways Table 3.1-1 summarizes the doses resulting from releases of airborne radioactivity via the different exposure pathways.

3

3.1.1 Gaseous Releases 3.1.1.1 Gamma Dose Rates Offsite Gamma air and whole (total) body dose rates are shown in Table 3.1-1 and were calculated based on measured release rates, isotopic composition of the gases, and meteorological data for the period. Based on measured effluents and average meteorological data, the maximum total body dose to an individual would be 8.74E-04 mrem (child) for the year (Table 3.1-1), with an occupancy or shielding factor of 0.7 included, and based on measured effluents and concurrent meteorological data would be 8.74E-04 mrem (Table 3.4-1). The maximum gamma air dose was 0.OOE+00 mrad based on measured effluents and average meteorological data (Table 3.1-1), and 0.OOE+00 mrad based on measured effluents and concurrent meteorological data (Table 3.4-1).

3.1.1.2 Beta Air and Skin Dose Rates The range of beta particles in air is relatively small (on the order of a few meters or less);

consequently, plumes of gaseous effluents may be considered "infinite" for purpose of calculating the dose from beta radiation incident on the skin. However, the actual dose to sensitive skin tissues is difficult to calculate due to the effect of the beta particle energies, thickness of inert skin and clothing covering sensitive tissues. For purposes of this report the skin is taken to have a thickness of 7.0 mg/cm 2 and an occupancy factor of 1.0 is used. The skin dose from beta and gamma radiation for the year was 0.OOE+00 mrem based on measured effluents and average meteorological data (Table 3.1-1), and 0.OOE+00 mrem based on measured effluents and concurrent meteorological data (Table 3.4-1).

4

The maximum offsite beta air dose for the year was O.OOE+00 mrad based on measured effluents and average meteorological data (Table 3.1-1), and O.OOE+00 mrad based on measured effluents and concurrent meteorological data (Table 3.4-1).

3.1.2 Radioactive Iodine The human thyroid exhibits a significant capacity to concentrate ingested or inhaled iodine. The radioiodine, 1-131, released during routine operation of the station, may be made available to man resulting in a dose to the thyroid.

The principal pathway of interest for this radionuclide is ingestion of radioiodine in milk. As Zion Station is not operational and 1-131 has decayed away, the maximum offsite concentration is estimated to be zero, as expected.

3.1.3 Dse to Thyroid The hypothetical thyroid dose to a maximum exposed individual living near the station via ingestion of milk was calculated. As Zion Station is not operational and 1-131 has decayed away, the maximum offsite concentration is estimated to be zero, as expected.

3.2 Liquid Effluent Pathways The three principal pathways through the aquatic environment for potential doses to man from liquid waste are ingestion of potable water, eating aquatic foods, and exposure while on the shoreline.

Not all of these pathways are significant or applicable at a given time but a reasonable approximation of the dose can be made by adjusting the dose formula for season of the year or type and degree of use of the aquatic environment. NRC developed equations* were used to calculate the doses to the whole body, lower GI tracts, thyroid, bone, skin; specific parameters for use in the equations are given in the Exelon Offsite Dose Calculation Manual. The maximum whole body dose (total body) for the year was O.OOE+00 mrem (adult) and no organ dose exceeded O.OOE+00 mrem (teenage liver) (Table 3.2-1). -

3.3 Assessment of Dose to Member of Public During the period January to December, 2005, Zion Station did not 5

exceed the below limits as shown in Table 3.1-1 and Table 3.2-1 (based on yearly average meteorological data), and Figure 3.1-1 (based on concurrent meteorological data):

• The RETS limits on dose or dose commitment to an individual due to radioactive materials in liquid effluents from each reactor unit (3 mrem to the whole body or 10 mrem to any organ during any calendar year).

• The RETS limits on air dose in noble gases released in gaseous effluents to a member of the public from each reactor unit (10 mrads for gamma radiation or 20 mrad for beta radiation during any calendar year).

• The RETS limits on dose to a member of the public due to iodine-131, iodine-133, tritium, and radionuclides in particulate form 'with half-lives greater than eight days in gaseous effluents released from each reactor unit (15 mrem to any organ during any calendar year).

The 10CFR20 limit on Total Effective Dose Equivalent to individual members of the public (100 mrem).

4.0 SITE METFOROI OGY A summary of the site meteorological measurements taken during each calendar quarter of the year is given in Appendix 11. The data are presented as cumulative joint frequency

• Nuclear Regulatory Commission, Regulatory Guide 1.109 (Rev. 1) distributions of the wind direction for the 250' level and wind speed class by atmospheric stability class determined from the temperature difference between the 250' and 35' levels. Data recovery for these measurements was 99.4% during 2005 (Table 3.4-1).

6

APPENDIX E-1 DATA TABLES AND FIGURES l

Zion Station 2005 Stack Effluont Totals A)

(A 04 ra~snn

- -LLD - - -I - -a LLD LL -- - -

-ILLU a I -LU I I LLU .2<MUI~LLW 5 <XMUJ A LLUJA[Y (I L LIJ L I <LkL m&ItJ I KLIU _ILLIJ (D

~ _ sitL M sms~

smsUl ACG a ¢rn~r _

LDa4L _L _ LLU M4 4 _ LL It = I _ 4 LLD_ MDL

= A 4 _ LU ;L~

4,,,,, - tLL -tfi~ _

a"It I zt Lu I L < LLDI LDA LU asLLDa kwI LU lS UD. ItL I WU LLp lLIU I :UU I -[LU 341

_ -bX a MU-1 LLU A ,LL~p_,UtLUIU a tLU a LDUa L L Lt 5',o -mu a LLO MUA<LLU 2 A -4 MD LD I 4LLU I4tLU m 4LLU, _

LLD < LLU_a UI LLD, a 4.0,4LLU a 4U.1)

=- N N - 2 - ;2- - N~l N NL NU - U ;L}11:f~

,t1 a

-1LiW LLU a5sULt*, ^ ;Atx MU: a I-LLU UJ ua~ V L _,LLD, A

aLt LU 1~kfl I,d14j A_ LI  ; LL LLU I ILkLIU Ia I UI LLD a MiL) wIF t~~ _=sG: 2 Lc -LL) I 4:) LLU I <LI LLU A LU I4W IW LLD II LUAck LL D I-LL5 v N N - N - N N N N N N N N N N N I5 LLI LU A I -4lLUr atCLU I Li_ -LU _I I I 154 a I aE L16 wEs =

= LIILI L I I 4 LD I== 4LU = cLLU I;L 4LLU ILLU I SLU LL S3-1

_ UU-Ip_LL _LI 'tLp U,-vr _ L _ HusULU a g-i tku u4a LLp to ZLLD0 ~ L ;LU I G IL 4 WI- tLL I; 4 LLU _ 4 LLt)

Table 1.2-1 Liquid Effluents 2005 AER Water Worksheet Total mkroCudos I I IJnI eb rI iWIlt Of W Irlnd 01JuI I AUl bopgid 06 On I NOV M r t V Woili 011tal t

3 :.-

'I_:::L '.__1 'L *I'U:: '4 .4::: 'LI 'It l ':::- 'U 41 . 41 41 l 'U l H; ; -ct eM

_ -CLC

• ~~ _ 4A _ cUX

_ ~_ sUM-LLut _ LLCI

_ -u_ <tt-LE LLD -CL ~ uLMA14U) 4Ltf CLU -CLL mK_

WI4Uu ztt cUV c~tO ;utta<L 'CU <Lt ILCIUStt U sub ¢tt cu cu etf un6~4Udi LLsUUVUALD z  ; r Cii D1UM ctt < LSLU- tt-_ LAu t _1, W- Zb V LLILI zIi :Lj u Wi< UAI itsg UAVLOi u M< UIc Urc LtPLE C 194 4LO c H c01 :r 5LL'- uLL'L 4ci.

L < uL'iL' UfL t L <uc<L LLL ' L L -4 .LLU 9

>;Ne I VLVtts LLIB teup i < CLt u LUP LL9LC -CUI 4LO 4Ui 4i 13 1GO-141 P< UC-L 4;i  : U 4UUm-< c U -ct cU eU etlwILc t <U cf 14 Icc UO14 U cI<tLU Uc tEat c 11 LL -c UL Lt 4zL f s s

<U H ni Ei  : UlJI <ll 4i [iii Zt Lt c U cL tlA

~~~LL 4 LCI -Ct LU*9 LLVi T: cUVUc uL <tttt Uuucs r8 1 . .87.

7 ICcU sULEV U cU E MOL1 c U c  ; UU~eUI~ ILI cu UA M<

F lu4 I K- LU24 U 4tI LUAU<U c

<t U cUA3- tU LU cLIcL~ <U et 4 < <t V4L~tt < U cttk'*7 NA-1-3101 LD I ILEU t L1 UI 41LU2 MW UMIL L c 1 WV c UXSc tt UI< -ct i L L[-c U; tlA  ;

j<cU-J5 u Ll U II slU eU RLI : U HL sLI sU U cUI c UML cUC~

X61S L <LL cLLt4 uL i¢L U LLu sIc LL4 t U <U LL -3 lXiii c U< <U sC-cLDcL U LL4c LsUlc U _LLc U s L<LEs tLsU LDI~cLI < EcL _ I< U UI {i si;g-E-1 .3

Table 2.0-1 Solid Radioactive Waste Table 2.0-1 has been deliberately deleted. For details on solid waste disposal, see the Zion 2005 Effluent Report E-1 .4

Table 3.1-1 Maximum Doses Resulting from Airborne Releases RLTWS v3.6.3 tZ10 VfSl 40CR410 URANIUM FUEL CYCLE DOSE REPORT GASEOUS DOSMSUW4ARY Report for: 2005 unit Range - From 1 To: 2 I&6P 005E LIt AKA*LYSIS 5122 25 0252X~#2 AKNUAL 2005 Age Dose Limit Max % of Annual - L t Group Organ (rer) (.rc.) Limit 2005 - n. Ay Organ ADULT GILLI 9.76t-04 1.13C.01 8.67t-03 20OS - Admin. Total dy CHILD rSY . 74E-04 1.05E01 8.32C-03 200S - T.Spc. Any Organ ADULT GILLI 9.76E-04 1.505+01 6.519-03 Receptor: S Composite Crit. Receptor - 1P Distance: 0.00 (meters) compass Point: MA Critical Pathway: Ground Plane Oeposition (WoD)

Majorcontributors C 0%or greater to total)

UCld Percente O,-60 9.854+01 CS-137 1.12E+00 200 - T.Spc. Total Body CHILD T7O0Y 8.74E-04 l.SOE+O S.82E-03 Receptor: S composite Crit. Receptor - IP Distance: 0.00 (meters) Compass Point: MA Cfistical Pathway: Ground Plane Deposition (GO) 0Major contributors ( 0%or greater to total) nuclide Percentage CS-137 2.675+00 E-1.6

Table 3.1-1 (continued)

Maximum Doses Resulting from Airborne Releases RETOAS v3.6.3 <1O0> vSS1 40CFft9O URANIUM4 FUEL CYCLE aOSE REPORT

_

• _ ..... . u.... . t _... _.

OASEOUS OSMSUMARY Report for: 2005 Unit Rwvf - From: I To: 2

, AG DOSt L T ANALYSIS m .X Akk1AL 2005 ,

Dofe LiMit Max % of Annual - Limit (mrad) (urad) Limit 200$ - add. Can 0.00OC*0 1. 50C.1 0.00E.00 2005 - Adin. Beta O.OOE+OO 1.SOE+01 0.00C+00 2003 - T.SpC. GeWa 0.00C400 1.S0E+01 .00E+OO00 Receptor: S camtssite Crit. Receptor - 1P Distance: . (meters) COpass Point: NA muclide Percentage 2005 - T.Spc. Beta 0.OOC+00 1.50L+01 0.00+00 Reeeptor: S cc" giete Crit. Receptor - IP olstance: O.00 (meters) compass Point, kA Nuclide Percentage E-1.6

Table 3.2-1 Maximum Doses Resulting from Liquid Effluents RtTvAS v3.6.3 <cZO> VSMI 40CFR190 tRANIUM1 FUEL CYCLE DOSE REPORT LI(WOD OMt S4M Y Report for: 2005 Unit Range - From: 1 To: 2 Liquid Iteceptor PERIOD DOSE BY ORGAN ANO AGE GROUP (areu) -- a- QWU=ER 4

• Ase Dos Li~rit Kua X of Annual - Limit Cup Organ (aftm) it") Lit 200S - A'dmin. Any raCn -.OOE+OO 5 +00O0.00t+O0O 2005 - Admin. Total body ADULT TOOY 0.00CE00 2.25E+00 0.00+EO0 2005 - T.SpC. AW oroan 0.00CE00 7.soE+00 0.0OE+OO Critical Pathway: '

,ajsr contributors ( OX or greater to total)

KUcl de Percentage 2005 - T.Spc. Total Body ADULT TBODY O.OOE.00 3.OOEOO O.OE+00 Critical Pathway: potable water (Pwtr)

Major contributors ( OX or greater to total) nuclide Percentage I

E-1 .7

Table 3.3-1 10CFR20 Compliance Assessment ZION STATION 2005 Unit I IOCFR20 Compliance Asscssnwal

1. IOCFR 20.1301 (a)(1)Compliance Total Effective Dose Equivalent 9.39-4 mrenm!ar 10 CFR 20.1301 (ai (1)limit 100 nirerNear

% of the limit

2. Compliance Summary IOCFR20 I" Qtr. 29 Qtr. 32Qtr. 4. Qtr % ofL.imit TED)E 6.97E-4 1.72E-4 6.9915-5 0 0.000939 I

E-1 .8

Table 3.4-1 Maximum Doses Resulting from Airborne Released Based on Concurrent Meteorological Data Zion Station - Unit 1 UAXIKUM DOSES RESULTING FgW AIRBORNE AMLEASES 2005 TYPE OF DOSE FIRST QUARTER SEcwo0 QUARTWER THtR3 ATER FOUATH QUARTEB ANNUAL CAA AIR Wrmad) 0.000Vf00( N ) O.000E+100 N ) O.00OEtO( N ) O.O¢OEt0D( N ) 0.000E+00t N 1 BETA AtR (erad) O.00oEtOO( N ) O.000E+00) N t O.O OE.000 N ) 0.0009+001 N I 0.000t+00 N )

WHOLE PODY (arer) l.S909-05(W1 ) 6.470E-06( H ) 2.34DE-06i V ) 0.I0COE+00 N t 2.8730-05) V 1 2.34DE-05( H ) 7.610E-061 b ) 2.7806t-1( N ) 0.OODE+O0( N ) 3.379E-0S( Y )

ORGAN (jare) 2.230z-O5( SE) 5.010E-0-6 N ) 3.750E-041ESE) Q.OOOE+00( N I 2.8921-05o (se CRITICAL PER0SO Teenager Teenager Teenager Adult Teenager CTIAL O0AN Lung Lung Lung Lung COMPLIA14CE STATUS 10 CfR 50 APP. I 10 CFR 50 APP.1 TYpe oF DOSE QUARTERLY tXJECTIVE OF APP. I YEARLY OBJECTIVE O APP.

or I C A t lrad) hXA 5.0 0.00 10.0 0.00 BETA AIR (mrad) 10.4 0.00 20.0 0.00 WHOLE BODY (area) 2.5 0.00 5.0 0.00 SRtN (cmea) 7.5 0.00 15.0 0.00 ORCAN (urv) 7.5 0.00 15.0 0.00 CRtTICAL PLASO 7eenagar CTr~TCAL ORGAN 'Lung C tculation us-d release d~ta from the following:

Unit 1 - Ground Date of calculition, 3/21/2006.

f; E-1.9

Table 3.4-1 (continued)

Maximum Doses Resulting from Airborne Released Based on Concurrent Meteorological Data 2ir 2tlt i4 - I' t 2 mj.1]-b; t2 S UL,2R RISUV!Tf13  ?'kali AIRWR14LJJE £LZAS3-,;

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-cad.n d&.t. frsw t? . tsil ;w i t 13-tr Rs---r Irkdl_ 2 - ur3w d qv ?' 1-J _ ZTYtrp?3  ?'liQr fata; .~f ca sslclat'101,1 )ii21 /2606t E-1.10

APPENDIX F METEOROLOGICAL DATA

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Extremely Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N

0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E

0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE

_ 0 _ 0 _ 0_ _ _ 0_ _ _ 0_ _ _ 0_ _ 0 S

0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 W

0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable Total 0 0 0 0 0 0 0 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes0 0

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Moderately Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 1 0 1 0 0 0 NE 0 2 2 4 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 _

0 0 0 0 0 0

SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 1 0 1 0 0 0 W 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 Total 0 4 2 0 6 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes 0 0

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Slightly Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0

NNE 0 3 1 0 0 4 0

NE 0 0 0 0 0 0 0

ENE 0 0 0 0 0 0 0

E 0 0 0 0 0 0 0

ESE 0 0 0 0 0 0 0

SE 0 0 0 0 0 0 0

SSE 0 0 0 0 0 0 0

S 0 0 0 0 0 0 0

SSW 0 0 2 0 0 2 0

SW 0 0 0 0 0 0 0

WSW 0 3 1 0 0 4 0

W 0 2 2 0 0 4 WNW 0 1 7 2 0 0 10 NW 0 0 16 1 0 0 17 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 1 32 9 0 0 42 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes0 0

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Neutral - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 27 62 30 1 0 122 NNE 1 18 38 17 4 0 78 NE 3 33 21 16 16 0 89 ENE 1 15 24 26 5 0 71 E 0 17 18 7 0 0 42 ESE 2 14 8 8 4 0 36 SE 3 10 18 5 0 0 36 SSE 4 14 25 44 0 0 87 S 4 14 6 3 0 0 27 SSW 4 16 17 8 2 0 47 SW 1 18 19 10 2 0 50 WSW 5 9 23 7 0 0 44 W 3 45 51 19 0 0 118 WNW 3 43 58 8 0 0 112 NW 8 87 110 23 0 0 228 NNW 3 57 59 15 3 0 137 Variable 0 0 0 0 0 0 0 Total 47 437 557 246 37 0 1324 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesi 0

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Slightly Stable - 25OFt-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 8 1 0 0 0 15 NNE 4 7 2 0 0 0 13 NE 3 5 9 1 0 0 18 ENE 0 5 15 1 0 0 21 E 3 5 8 1 0 0 17 ESE 2 8 8 8 2 0 28 SE 1 11 6 0 0 0 18 SSE 4 13 16 2 0 0 35 S 7 31 7 0 0 0 45 SSW 7 28 8 1 0 0 44 SW 13 21 10 9 0 0 53 WSW 9 24 16 4 0 2 55 W 18 21 10 4 0 1 54 WNW 25 25 7 1 0 0 58 NW 20 28 2 0 0 0 50 NNW 4 17 1 0 0 0 22 Variable 0 0 0 0 0 0 0 Total 126 257 126 32 2 3 546 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesi 0o

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Moderately Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 0 2 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 1 1 0 0 0 0 E 0 0 0 0 0 0 0 ESE 1 0 1 0 0 0 0 SE 0 0 0 SSE 1 2 16 0 0 0 19 S 4 23 9 1 0 0 37 SSW 5 0 0 0 0 7 SW 11 2 0 0 0 0 13 WSW 13 2 0 0 0 0 15 W 7 6 0 0 0 0 13 WNW 6 8 0 0 0 0 14 NW 1 5 0 0 0 0 6 NNW 1 2 o 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 52 53 25 1 0 0 131 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes1 0

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Extremely Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 4 0 0 0 SSE 1 2 7 11 0 0 0 S 5 16 0 0 0 0 32 01 0 0 0 SSW 5 2 7 0 0 0 0 0 SW 5 16 6 0 0 0 0 0 WSW 3 2 5 0 0 0 0 W 1 8 9 0 0 0 0 WNW 1 61 7 0 0 0 0 NW 0 2 2 0 0 0 0 NNW 0 1 1 0 0 0 0 Variable 0 0 0 Total 21 40 15 0 0 0 76 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stab.ility class: 0 Hours of missing stability measurements in all :stability classes 0

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Extremely Unstable - 25OFt-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N_____0__ 0---- 0---- --

0-- - - --- 0---

N 0 0 0 0 0 0 0

NNE 0 0 0 0 0 0 0

NE 0 0 0 0 0 0 0

ENE 0 0 0 0 0 0 0

E 0 0 0 0 0 0 0

ESE 0 0 0 0 0 0 0

SE 0 0 0 0 0 0 0

SSE 0 0 0 0 0 0 0

S 0 0 0 0 0 0 _

0 SSW 0 0 0 0 0 0 0

SW 0 0 0 0 0 0 0

WSW 0 0 0 0 0 0 0

W 0 0 0 0 0 0 0

WNW 0 0 0 0 0 0 0

NW 0 0 0 0 0 0 0

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 ° 0

Total 0 0 0 0 0 0 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesl 3

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Moderately Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 1 1 0 2 NE 0 0 0 0 3 0 3 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 .0 S 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 1 0 0 1 W 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 0 2 4 0 6 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 3

I Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Slightly Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 0 0 NNE 0 1 3 0 4 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 . 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 2 0 2 0

0 0 SW 0 2 1 0 3 0 0 WSW 0 1 0 0 1 0 0 W 1 5 1 0 7 0 0 WNW 0 9 3 0 12 0

NW 0 0 12 0 0 12 0

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 0

Total 0 1 30 10 0 41 Hours of calm in this stability class: 0 Hours of missing wFind measurements in this stal ility class:

Hours of missing stability measurements in all stability classes:' 3

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Neutral - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 3 26 54 39 5 127 NNE 0 10 17 15 11 11 64 NE 0 12 26 19 14 21 92 ENE 0 13 13 27 14 6 73 E 1 7 6 10 3 4 31 ESE 0 8 4 10 1 4 27 SE 3 15 10 38 21 0 87 SSE 3 6 17 12 14 0 . 52 S 1 6 14 9 5 5 40 SSW 0 1 22 5 4 4 36 SW 0 4 12 15 12 3 46 WSW 0 8 19 21 13 0 61 W 0 11 38 35 20 7 111 WNW 1 9 52 62 11 6 141 NW 1 14 78 111 31 5 240 NNW 0 4 28 25 15 7 79 Variable 0 0 0 0 0 0 0 Total 10 131 382 468 228 88 1307 Hours of calm in this stability class: 0 Hours of missing wind measurements in this s' tability class: 29

'Hours of missing stability measurements in a:11 stability classes:' 3

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Slightly Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 6 6 7 0 0 21 NNE 3 5 6 3 0 0 17 NE 1 4 3 11 4 0 23 ENE 0 2 5 17 0 1 25 E 0 2 4 3 5 4 18 ESE 4 2 6 9 9 4 34 SE 3 1 11 9 6 0 30 SSE 6 8 18 15 7 3 .57 S 3 8 8 9 1 0 29 SSW 1 6 15 13 6 1 42 SW 3 4 17 21 5 5 55 WSW 1 1 12 20 8 5 47 W 3 6 13 12 5 3 42 WNW 1 9 20 18 2 0 50 NW 1 5 16 15 1 0 38 NNW 0 6 18 6 0 0 30 Variable 0 0 0 0- 0 0 0 Total 32 75 178 188 59 26 558 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 17 Hours of missing stability measurements in all stability classes:' 3

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Moderately Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 4 2 0 8 0

NNE 1 1 0 0 0 2 0

NE 0 0 2 0 0 2 0

ENE 0 1 0 0 0 1 0

E 1 0 0 0 0 1 0

ESE 2 0 0 1 0 3 SE 0 0 0 0 2 1 3 SSE 0 0 0 9 8 4 21 S 0 4 7 12 1 1 25 SSW 0 2 14 4 1 0 21 SW 1 2 3 0 0 0 6 WSW 0 1 6 3 1 0 11 W 0 4 2 1 0 0 7 WNW 0 0 1 4 0 0 5 NW 2 1 5 1 0 0 9 NNW 0 0 4 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 7 18 48 37 13 6 . 129 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class:

Hours of missing stability measurements in all stability classes:, 3

Zion Nuclear Station Period of Record: January - March 2005 Stability Class - Extremely Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 3 0 0 0 3 0

NNE 0 0 0 0 0 0 0

NE 0 1 0 0 0 1 0

ENE 0 0 0 0 0 0 0

E 0 0 0 0 0 0 0

ESE 0 0 0 0 0 0 0

SE 0 0 0 0 2 2 0 1 SSE 0 1 1 2 2 . 6 0 1 S 9 16 3 1 30 0

SSW 0 5 4 1 0 11 0

SW 1 5 1 0 0 7 WSW 1 1 1 0 0 0 2 W 0 1 3 1 0 0 5 1

WNW 1 2 1 0 0 5 NW 0 0 0 3 0 0 3 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 2 5 30 27 6 5 75 Hours of calm in this stability class: 0 Hours of missing wind measurements in this sta:bility class: I Hours of missing stability measurements in all stability classes:, 3

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Extremely Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 1 0 0 1 0 0 0 NE 4 0 0 4 0 0 0 ENE 0 0 0 0 0 0 0 E 2 1 0 3 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 . 0 0 0 _

0 S 0 0 0 _

0 0 0 0 SSW 0 3 0 3 0 0 0 SW 0 1 2 3 0 0 0 WSW 0 10 7 17 0 0 0 W 0 5 0 5 0 0 0 WNW o 0 0 0 0 0 0 NW 0 1 0 1 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0

Total 0 7 21 9 0 37 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes: 00

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Moderately Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N_____0__ 0---- 0---- 0---- 0---- 0----

N 0 0 0 0 0 0 0 NNE 0 1 0 0 0 0 1 NE 0 3 3 0 0 0 6 ENE 0 1 1 0 0 0 2 E 0 0 0 0 0 0 0 ESE 0 0 1 0 0 0 1 SE 0 0 1 0 0 0 1 SSE 0 2 0 0 0 0 2 S 0 0 1 0 0 0 1 SSW 0 0 1 0 0 0 1 SW 0 0 2 2 0 0 4 WSW 0 1 5 2 0 0 8 W 0 2 8 1 0 0 11 WNW 0 0 3 1 0 0 4 NW 0 0 2 0 0 0 2 NNW 0 0 2 0 0 0 2 IVariable 0 0 0 0 0 0 0 Total 0 10 30 6 0 0 46 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 0o

Zion Nuclear Station Period of Record: April - June 2005 Stability (Class - Slightly Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 1 1 0 3 0

NNE 2 2 0 0 0 4 0

NE 7 1 0 0 0 8 0

ENE 2 0 2 0 0 4 0

E 0 1 0 0 0 1 0

ESE 1 0 0 0 0 1 0

SE 3 1 0 0 0 4 0

SSE 4 2 0 0 0 6 0

S 2 0 0 0 0 2 0

SSW 0 0 0 0 0 0 0

SW 1 2 0 0 0 3 0

WSW 2 7 1 0 0 10 0

W 2 24 4 0 0 30 0

WNW 0 5 0 0 0 5 0

NW 0 4 3 0 0 7 0

NNW 0 4 3 0 0 7 0

Variable 0 0 0 0 0 0 Total 0 26 54 14 1 0 95 Hours of calm in this stability class: 0 Hours of missing wind measurements in this si-:ability class: 9 Hours of missing stability measurements in a.1l stability classes:, 0

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Neutral - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 25 52 44 26 2 150 NNE 1 24 69 23 6 0 123 NE 2 17 12 7 0 0 38 ENE 7 15 4 3 0 0 29 E 8 6 5 0 0 0 19 ESE 4 20 6 2 0 0 32 SE 1 9 9 0 0 0 19 SSE 0 18 20 1 0 0 .39 S 0 10 6 0 0 0 16 SSW 1 4 11 1 0 0 17 SW 1 12 16 5 0 0 34 WSW 0 10 32 2 0 0 44 W 3 28 54 9 0 0 94 WNW 1 13 30 1 0 0 45 NW 2 16 22 3 0 0 43 NNW 1 7 10 9 0 0 27 Variable 0 0 0 0 0 0 0 Total 33 234 358 110 32 2 769 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Slightly Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 31 30 2 0 0 70 NNE 11 44 22 0 0 0 77 NE 7 25 4 3 0 0 39 ENE 10 20 1 1 0 0 32 E 12 24 1 0 0 0 37 ESE 2 12 3 1 0 0 18 SE 6 19 14 0 0 0 39 SSE 4 23 26. 2 0 0 ,55 S 8 48 13 0 0 0 69 SSW 7 15 14 2 0 0 38 SW 3 22 7 0 0 0 32 WSW 4 23 9 0 0 0 36 W 9 15 13 0 0 0 37 WNW 8 10 0 0 0 0 18 NW 5 13 0 0 0 0 18 NNW 9 14 1 0 0 0 24 Variable 0 0 0 0 0 0 0 Total 112 358 158 11 0 0 639 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Moderately Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 -

N 8 13 0 0 0 0 21 NNE 4 7 1 0 0 0 12 NE 3 9 1 0 0 0 13 ENE 3 9 0 0 0 0 12 E 8 9 1 0 0 0 18 ESE 4 8 1 0 0 0 13 SE 5 13 6 0 0 0 24 SSE 6 36 22 1 0 0 .65 S 10 48 13 0 0 0 71 SSW 15 4 0 0 0 0 19 SW 4 8 0 0 0 0 12 WSW 9 11 1 0 0 0 21 W 11 2 0 0 0 0 13 WNW 8 9 0 0 0 0 17 NW 9 6 1 0 0 0 16 NNW 8 5 0 0 0 0 13 Variable 0 0 0 0 0 0 0 Total 115 197 47 1 0 0 360 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Extremely Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 0 0 0 2 NNE 1 3 0 0 0 0 4 NE 2 0 0 0 0 0 2 ENE 1 0 3 1 0 0 5 E 2 2 3 1 0 0 8 ESE 3 5 3 2 0 0 13 SE 4 8 0 0 0 0 12 SSE 4 8 20 0 0 0 32 S 0 34 5 0 0 0 39 SSW 8 6 0 0 0 0 14 SW 6 2 0 0 0 0 8 WSW 14 3 0 0 0 0 17 W 8 3 0 0 0 0 11 WNW 8 3 0 0 0 0 11 NW 4 0 0 0 0 0 4 NNW 7 0 0 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 73 78 34 4 0 0 189 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Extremely Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 1 0 0 0 1 NE 0 0 2 0 0 0 2 ENE 0 1 1 0 0 0 2 E 0 0 2 1 0 0 3 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 0 3 0 0 3 SW 0 0 0 1 -2 0 3 WSW 0 0 0 5 9 2 16 W 0 0 0 5 1 0 6 WNW 0 0 0 0 0 0 0 NW 0 0 0 1 0 0 1 NNW 0 0 0 0 0 0 0 lariable 0 0 0 0 0 0 0 Total 0 1 6 16 12 2 37 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes: 4

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Moderately Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0

NNE 0 2 0 0 0 2 0

NE 1 0 3 0 0 4 0

ENE 1 1 1 0 0 3 0

E 0 0 0 0 0 0 0

ESE 0 1 0 0 0 1 0

SE 2 1 0 0 0 3 0

SSE 0 0 0 0 0 ,

0 S 0 1 0 0 0 1 0

SSW 0 0 0 1 0 1 0

SW 0 0 2 2 0 4 0

WSW 0 1 6 3 0 10 0

W 1 1 5 3 0 10 0

WNW 0 1 1 2 0 4 0

NW 0 0 3 0 0 3 0

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 Total 0 5 9 21 11 0 46 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 4

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Slightly Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 1 1 2 NNE 0 1 4 2 0 0 7 NE 0 1 3 2 0 0 6 ENE 0 2 0 0 2 0 4 E 0 0 1 0 0 0 1 ESE 0 0 1 0 0 0 1 SE 0 2 4 2 0 0 8 SSE 0 0 1 2 0 0 ,3 S 0 0 1 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 3 0 0 3 WSW 0 0 2 5 4 0 11 W 0 0 4 18 8 0 30 WNW 0 0 0 3 2 )0 5 NW 0 0 0 3 7 0 10 NNW 0 0 0 3 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 6 21 43 24 1 95 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: p Hours of missing stability measurements in all stability classes:- 4

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Neutral - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 15 48 27 60 151 NNE 0 11 38 35 16 10 110 NE 0 6 7 5 7 4 29 ENE 1 10 8 2 5 1 27 E 1 13 11 6 0 0 31 ESE 0 13 8 2 3 0 26 SE 0 3 18 12 2 0 35 SSE 0 1 16 19 4 0 .40 S 0 3 3 2 0 0 8 SSW 0 2 1 10 8 0 21 SW 1 2 7 16 4 1 31 WSW 0 2 5 27 9 0 43 W 0 0 25 54 17 1 97 WNW 0 5 21 26 2 0 54 NW 0 3 13 16 10 0 42 NNW 0 0 3 8 9 5 25 Variable 0 0 0 0 0 0 0 Total 3 75 199 288 123 82 770 Hours of calm in this stability class: 0 Hours of missing wind measurements in this si:ability class: P Hours of missing stability measurements in a:Ll stability classesv 4

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Slightly Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 11 20 14 0 47 NNE 0 14 42 31 5 0 92 NE 1 20 11 2 2 3 39 ENE 1 10 17 0 3 0 31 E 2 18 7 9 0 0 36 ESE 2 15 13 9 3 0 42 SE 1 8 26 23 8 1 67 SSE 1 5 21 31 8 4 70 S 2 3 15 17 6 1 44 SSW 0 2 3 20 5 0 30 SW 0 2 9 14 6 0 31 WSW 0 3 11 20 4 0 38 W 1 2 11 19 4 0 37 WNW 0 3 11 3 0 0 17 NW 1 3 3 6 0 0 13 NNW 0 2 8 3 0 0 13 Variable 0 0 0 0 0 0 0 Total 12 112 219 227 68 9 647 Hours of calm in t.his stability class: 0 Hours of missing %rind measurements in this stability class: I?

Hours of missing stability measurements in all stability classes:, 4

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Moderately Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 3 3 0 0 10 NNE 0 5 9 3 1 0 18 NE 0 10 7 0 0 0 17 ENE 2 7 1 2 1 0 13 E 2 13 7 2 4 0 28 ESE 0 3 7 9 7 0 26 SE 1 6 11 14 8 0 40 SSE 0 8 15 37 18 0 78 S 0 2 15 15 10 0 42 SSW 1 4 14 12 0 0 31 SW 0 3 4 4 1 0 12 WSW 1 1 2 7 0 0 11 W 0 0 7 6 0 0 13 WNW 0 0 4 2 0 0 6 NW 0 1 5 7 0 0 13 NNW 1 1 6 2 0 0 10 Variable 0 0 0 0 0 0 0 Total 8 68 117 125 50 0 368 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 4

Zion Nuclear Station Period of Record: April - June 2005 Stability Class - Extremely Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 0 0 0 0 1 NNE 1 4 1 1 0 0 7 NE 2 1 0 2 0 6 1

ENE 0 1 1 0 0 3 5 E 0 2 0 0 2 5 9 ESE 1 1 1 1 0 8 12 SE 1 0 5 8 5 1 20 SSE 0 1 4 4 2 0 11 S 0 7 15 27 9 0 58 SSW 0 2 13 8 1 0 24 SW 0 1 4 4 1 0 10 WSW 0 1 2 3 0 0 6 W 2 1 5 3 0 0 11 WNW 0 1 1 1 0 0 3 NW 0 1 3 2 0 0 6 NNW 1 3 1 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 7 29 57 62 22 17 194 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes:, 4

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Extremely Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 6 0 0 7 NNE 0 10 26 0 0 0 36 NE 0 27 29 0 0 0 56 ENE 0 34 2 0 0 0 36 E 2 29 1 0 0 0 32 ESE 0 34 12 0 0 0 46 SE 0 28 15 0 0 0 43 SSE 0 8 25 0 0 0 33 S 0 7 3 0 0 0 10 SSW 0 2 18 5 0 0 25 SW 0 8 14 3 0 0 25 WSW 0 6 4 5 0 0 15 W 0 7 15 1 0 0 23 WNW 0 10 9 0 0 0 19 NW 0 4 6 0 0 0 10 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 2 214 181 20 0 0 417 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Moderately Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 5 2 0 0 8 NNE 1 2 11 0 0 0 14 NE 0 5 5 0 0 0 10 ENE 0 11 0 0 0 0 11 E 2 4 1 0 0 0 7 ESE 1 3 3 0 0 0 7 SE 0 7 3 0 0 0 10 SSE 0 3 9 0 0 0 12 S 1 3 1 o a 0 5 SSW 0 2 4 0 0 0 6 SW 0 2 0 0 0 0 2 WSW 0 0 0 1 0 0 1 W 0 2 8 0 0 0 10 WNW 0 7 3 0 0 0 10 NW 0 2 1 0 0 0 3 NNW 0 3 1 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 5 57 55 3 0 0 120 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes., 0

Zion Nuclear Station Period of Record: July - Septembe r 2005 Stability iClass - Slightly Unstable - 250 Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 4 16 5 0 0 26 NNE 0 18 4 0 0 0 22 NE 0 9 9 2 0 0 20 ENE 0 4 1 3 0 0 8 E 3 3 0 0 0 0 6 ESE 0 3 4 1 0 0 8 SE 5 9 6 0 0 0 20 SSE 1 5 25 0 0 0 31 S 1 6 4 0 0 0 11 SSW 1 7 3 0 0 0 11 SW 1 2 4 1 0 0 8 WSW 0 1 2 0 0 0 3 W 0 6 4 1 0 0 11 WNW 0 6 2 0 0 0 8 NW 0 7 8 2 0 0 17 NNW 1 0 2 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 14 90 94 15 0 0 213 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Neutral - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 36 53 15 0 0 109 NNE 2 33 20 0 0 0 55 NE 5 26 5 4 0 0 40 ENE 1 8 3 0 0 0 12 E 10 12 2 0 0 0 24 ESE 8 15 2 1 0 0 26 SE 6 21 17 0 0 0 44 SSE 3 30 21 5 0 0 59 S 6 33 6 0 0 0 45 SSW 6 21 14 1 0 0 42 SW 5 9 23 0 0 0 37 WSW 1 21 8 1 0 0 31 W 3 28 5 0 0 0 36 WNW 2 14 0 1 0 0 17 NW 2 18 5 2 0 0 27 NNW 1 26 7 0 0 0 34 Variable 0 0 0 0 0 0 0 Total 66 351 191 30 0 0 638 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0, Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Slightly Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 3---0 0---- 0----

13___

N 5 13 3 0 0 0 21 NNE 9 3 2 0 0 0 14 NE 2 0 0 0 0 5 ENE 4 31 5 0 0 0 0 E 3 0 3 ESE 2 6 1 0 0 0 9 SE 5 14 4 0 0 0 23 SSE 12 9 6 0 0 0 27 S 16 64 4 0 0 0 84 SSW 14 61 4 1 0 0 80 SW 15 12 2 0 0 0 29 WSW 6 25 0 0 0 0 31 W 6 21 0 0 0 0 27 WNW 7 11 0 0 0 0 18 NW 7 23 0 0 0 0 30 NNW 18 19 0 0 0 0 37 Variable 0 0 0 0 0 0 0 Total 131 285 26 1 0 0 443 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes 1, 0

Zion Nuclear Station Period of Record: July - Septembe r 2005 Stability tClass - Moderately Stable - 250 Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 0 3 0 0 0 0 NNE 2 0 2 0 0 0 0 NE 1 1 2 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 1 0 1 0 0 0 0 SSE 1 3 4 0 0 0 0 S 1 9 0 0 0 0 10 0 0 0 0 SSW 21 14 35 0 0 0 0 SW 23 16 39 0 0 0 0 WSW 15 4 19 0 0 0 0 W 17 7 24 0 0 0 0 WNW 15 8 23 0 0 0 0 NW 18 7 25 0 0 0 0 NNW 9 2 11 0 0 0 0 Variable 0 0 0 Total 127 71 0 0 0 0 198 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: July - September 2005 Stability ('lass - Extremely Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N

0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E

0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE

_ 0_ _ _ 0_ _ _ 0_ _ _ 0_

S 1 1 2 0 0 0 0 SSW 6 1 7 0 0 0 0 SW 8 1 9 0 0 0 0 WSW 15 1 16 0 0 0 0 W 22 12 34 0 0 0 0 WNW 26 28 54 0 0 0 0 NW 7 2 9 0 0 0 0 NNW 1 0 1 0 0 0 0 Variable 0 0 0 Total 86 46 0 0 0 0 132 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 0

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Extremely Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 1 5 0 7 0

NNE 1 25 16 2 0 44 0

NE 2 30 14 2 0 48 0

ENE 9 21 3 0 0 33 0

E 10 22 2 0 0 34 0

ESE 10 25 4 0 0 39 0

SE 10 33 18 1 0 62 0

SSE 1 15 6 0 0 22 0

S 0o 1 2 5 1 0 9 0

SSW 0 2 14 6 0 22 0

SW 1 13 11 3 0 28 0

WSW 1 4 3 6 0 14 0

W 1 10 10 4 0 25 0

WNW 1 11 9 0 0 21 0

NW 2 3 3 0 0 8 0

NNW 0 1 0 0 0 1 0

Variable 0 0 0 O 0 0 Total 0 50 218 119 30 0 417 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesi 35

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Moderately Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 5 2 0 8 NNE 0 2 8 6 0 0 16 NE 0 1 2 4 1 0 8 ENE 0 6 3 0 0 0 9 E 0 4 3 1 0 0 8 ESE 0 2 4 0 0 0 6 SE 0 2 4 4 1 0 11 SSE 0 4 1 11 0 0 16 S 0 0 2 0 1 0 3 SSW 0 0 2 3 0 0 5 SW 0 0 2 0 0 0 2 WSW 0 0 0 0 1 0 1 W 0 1 2 5 3 0 11 WNW 0 1 5 5 0 0 11 NW 0 0 1 1 0 0 2 NNW 0 0 3 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 23 43 45 9 0 120 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes:, 35

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Slightly Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 4 12 6 0 24 NNE 0 6 19 2 0 0 27 NE 0 3 3 1 8 1 16 ENE 0 1 1 0 3 2 7 E 0 3 3 1 0 0 7 ESE 0 0 3 2 1 1 7 SE 0 4 6 14 2 0 26 SSE 1 3 8 16 1 0 29 S 0 2 3 1 1 0 7 SSW 0 0 4 5 0 0 9 SW 0 2 1 6 1 0 10 WSW 0 1 0 2 1 0 4 W 0 1 5 4 1 0 11 WNW 0 1 6 4 0 0 11 NW 0 1 2 7 2 1 13 NNW 0 2 2 1 0 0 5 Variable 0 0 0 0 0 0 0 Total 1 32 70 78 27 5 213 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes?, 35

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Neutral - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 19 49 22 8 101 NNE 11 28 26 5 0 70 NE 7 13 3 5 4 33 ENE 5 11 3 2 0 22 E 9 6 7 2 0 24 ESE 7 13 3 0 1 24 SE 10 30 13 9 0 62 SSE 4 27 19 6 0 58 S 4 14 17 1 0 37 SSW 1 6 17 5 0 30 SW 2 8 20 3 0 35 WSW 2 13 18 2 0 36 W 1 12 20 0 0 33 WNW 2 11 4 0 1 18 NW 2 9 11 2 2 26 NNW 2 7 18 0 0 28 Variable 0 0 0 0 0 0 Total 11 71 227 248 64 16 637 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes:, 35

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Slightly Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 1 15 7 0 0 25 NNE 0 4 12 4 3 0 23 NE 1 3 6 1 0 0 11 ENE 1 7 1 2 0 0 11 E 1 1 3 0 0 0 5 ESE 1 1 6 4 0 0 12 SE 0 9 10 3 3 0 25 SSE 1 11 23 19 2 0 56 S 0 6 18 39 4 0 67 SSW 0 1 18 40 3 0 62 SW 0 0 12 19 0 0 31 WSW 2 2 8 16 1 0 29 W 0 0 6 19 0 0 25 WNW 0 1 4 8 0 0 13 NW 0 0 8 5 0 0 13 NNW 1 5 13 19 0 0 38 Variable 0 0 0 0 0 0 0 Total 10 52 163 205 16 0 446 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: l Hours of missing stability measurements in all stability classes:} 35

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Moderately Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 12-N 0 1 8 3 0 0 12 NNE 1 7 4 0 0 0 12 NE 0 3 0 0 0 0 3 ENE 1 5 1 1 0 0 8 E 0 5 0 0 0 0 5 ESE 2 3 0 0 0 0 5 SE 1 3 2 0 0 0 6 SSE 2 10 6 1 0 0 19 S 2 6 13 15 0 0 36 SSW 2 1 8 13 0 0 24 SW 0 0 8 25 2 0 35 WSW 0 2 3 4 0 0 9 W 1 2 0 1 0 0 4 WNW 0 3 5 1 0 0 9 NW 0 1 5 3 0 0 9 NNW 0 1 1 6 0 0 8 Variable 0 0 0 0 0 0 0 Total 12 53 64 73 2 0 204 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classesi, 35

Zion Nuclear Station Period of Record: July - September 2005 Stability Class - Extremely Stable - 25OFt-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 6 12 0 0 0 19 NNE 1 8 4 2 0 0 15 NE 0 3 0 0 0 0 3 ENE 0 4 0 0 0 0 4 E 2 1 1 0 0 0 4 ESE 2 2 1 0 0 0 5 SE 2 0 1 0 0 0 3 SSE 0 3 0 0 0 0 3 S 1 4 2 2 0 0 9 SSW 0 5 3 3 0 0 11 SW 2 4 3 5 0 0 14 WSW 2 4 5 6 0 0 17 W 0 3 1 2 0 0 6 WNW 0 4 1 0 0 0 5 NW 0 2 0 1 0 0 3 NNW 1 1 8 2 0 0 12 Variable 0 0 0 0 0 0 0 Total 14 54 42 23 0 0 133 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesi 35

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Extremely Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 15 11 0 0 27 NNE 0 4 21 2 0 0 27 NE 0 10 15 0 0 0 25 ENE 0 8 7 0 1 0 16 E 0 8 0 0 0 0 8 ESE 0 2 2 0 0 0 4 SE 0 13 4 0 0 0 17 SSE 0 8 3 0 0 0 11 S 0 3 4 0 0 0 7 SSW 1 2 20 2 0 0 25 SW 0 8 15 12 0 0 35 WSW 0 9 40 5 6 0 60 W 0 9 41 7 2 0 59 WNW 0 7 25 2 0 0 34 NW 0 2 7 3 0 0 12 NNW 0 1 7 0 0 0 8 Variable 0 0 0 0 0 0 0 Total 1 95 226 44 9 0 375 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes!, 0

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Moderately Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 9 4 0 0 15 NNE 0 1 2 0 0 0 3 NE 0 3 1 0 0 0 4 ENE 1 4 5 5 4 0 19 E 0 1 2 9 0 0 12 ESE 0 0 3 4 0 0 7 SE 0 0 0 0 0 0 0 SSE 0 3 2 0 0 0 5 S 1 1 2 0 0 0 4 SSW 0 0 5 1 0 0 6 SW 0 6 2 9 0 0 17 WSW 0 5 2 2 1 0 10 W 1 9 11 4 1 0 26 WNW 1 6 8 2 0 0 17 NW 1 .5 5 0 1 0 12 NNW 1 1 5 3 0 0 10 Variable 0 0 0 0 0 0 0 Total 6 47 64 43 7 0 167 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesi 0o

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Slightly Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 15 7 0 0 26 NNE 2 9 8 1 0 0 20 NE 0 3 6 0 0 0 9 ENE , 0 4 12 2 1 0 19 E 0 4 2 5 0 0 11 ESE 0 4 6 0 0 0 10 SE 0 7 0 3 0 0 10 SSE 0 9 5 13 7 0 34 S 2 7 5 0 0 0 14 SSW 0 10 7 2 0 0 19 SW 2 9 14 14 0 0 39 WSW 3 15 31 7 5 0 61 W 2 9 28 12 0 0 51 WNW 2 16 13 3 0 0 34 NW 3 14 17 13 1 0 48 NNW 0 15 47 5 0 0 67 Variable 0 0 0 0 0 0 0 Total 16 139 216 87 14 0 472 Hours of calm in this stability class: 0 Hours of missing wind measurements in this slLability class: 0 Hours of missing stability measurements in a.11 stability classesi, 0

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Neutral - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 11 5 11 29 0 0 NNE 3 8 8 0 19 0 0 NE 0 5 7 2 14 0 0 ENE 0 11 7 1 19 0 0 E 3 3 4 0 10 0 0 ESE 0 1 3 0 4 0 0 SE 0 3 6 3 12 0 0 SSE 0 8 24 4 36 0 0 S 0 17 17 7 41 SSW 12 34 36 8 1 1 92 SW 3 22 36 27 3 0 91 WSW 4 25 32 4 0 0 65 W 7 64 22 6 0 0 99 WNW 10 21 33 1 0 0 65 NW 8 12 12 2 0 0 34 NNW 2 12 22 0 0 0 36 Variable 0 0 0 0 0 0 0 Total 54 257 274 76 4 1 666 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesi 0

Zion Nuclear Station Period of Record: October - Decemb er2005 Stability Class - Slightly Stable - 250 Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Directiorn 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 3 4 0 0 0 0 NNE 0 9 9 0 0 0 0 NE 0 1 1 0 0 0 0 ENE 1 2 3 0 0 0 0 E 0 1 1 ESE 0 0 2 1 0 0 3 SE 1 2 6 0 0 0 9 SSE 3 6 5 2 0 0 16 S 6 24 7 0 0 0 37 SSW 10 36 4 0 0 0 50 SW 11 14 3 0 0 0 28 WSW 4 24 8 0 0 0 36 W 9 34 1 0 0 0 44 WNW 10 23 0 0 0 0 33 NW 3 28 2 0 0 0 33 NNW 0 7 0 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 59 214 38 3 0 0 314 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stal ility class: 0 Hours of missing stability measurements in all stability classes., 0

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Moderately Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 SE 2 2 0 2 0 0 0 SSE 3 5

_ 0__ _ _ 0_ _ _ 0_ _ _ 0_

S 2 23 25 0 0 0 0 SSW 3 7 10 0 0 0 0 SW 3 9 12 0 0 0 0 WSW 3 4 7 0 0 0 0 W 3 14 17 0 0 0 0 WNW 4 10 14 0 0 0 0 NW 5 15 20 0 0 0 0 NNW 2 3 5 0 0 0 0 Variable 0 0 0 Total 25 90 2 0 0 0 117 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesi, 0

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Extremely Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 2 0 0 0 SSE 0 1 3

_ 0__ _ _ 0_ _ _ 0_ _ _ 0_

S 0 15 15 0 0 0 0 SSW 0 1 1 0 0 0 0 SW 1 4 5 0 0 0 0 WSW 4 2 6 0 0 0 0 W 5 9 14 0 0 0 0 WNW 2 6 8 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 Total 12 38 2 0 0 0 52 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes0 0

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Extremely Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 15 10 2 30 0

NNE 0 12 13 3 0 28 0

NE 2 9 13 0 0 24 0

ENE 2 5 5 1 1 14 0

E 0 7 1 0 0 8 0

ESE 1 1 2 0 0 4 0

SE 6 11 4 0 0 21 0

SSE 5 0 5 0 0 10 0

S 1 1 1 0 0 3 0

SSW 0 2 21 0 0 23 SW 1 7 6 13 10 0 37 WSW 0 2 13 26 8 7 56 W 0 1 23 31 3 8 66 WNW 0 0 8 20 7 0 35 NW 0 1 3 3 3 1 11 NNW 0 0 0 5 0 0 5 Variable 0 0 0 0 0 0 0 Total 1 29 103 178 45 19 375 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: , 7

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Moderately Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 4 5 6 0 15 NNE 0 1 1 1 0 0 3 NE o o 1 2 1 0 4 ENE 0 1 1 9 4 5 20 E 0 0 2 3 5 2 12 ESE 0 0 0 8 0 0 8 SE 0 0 0 0 0 0 0 SSE 0 2 1 1 0 0 4 S 0 0 2 2 1 0 5 SSW 0 1 1 3 1 0 6 SW 0 3 2 1 9 1 16 WSW 0 2 4 3 3 1 13 W 0 3 7 11 0 5 26 WNW 0 5 4 4 3 2 18 NW 2 1 3 5 0 1 12 NNW 0 0 2 4 3 0 9 Variable 0 0 0 l0 0 0 0 Total 2 19 35 62 36 17 171 Hours of calm in this stability class: 0 Hours of missing wind measurements in this st-. atility class: 0 Hours of missing stability measurements in all stability classes?:I 7

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Slightly Unstable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 3 15 9 0 28 NNE 0 2 4 8 0 0 14 NE 0 1 3 7 1 0 12 ENE 0 0 4 12 5 1 22 E 0 0 2 9 3 0 14 ESE 0 0 5 8 0 0 13 SE 0 2 8 4 4 6 24 SSE 0 2 3 3 8 5 21 S 0 4 8 3 1 0 16 SSW 0 0 4 10 2 1 17 SW 0 4 8 10 13 1 36 WSW 0 5 12 29 8 11 65 W 0 3 5 24 11 7 50 WNW 0 6 10 5 14 0 35 NW 0 6 13 14 11 7 51 NNW 1 0 10 38 12 3 64 Variable 0 0 0 0 0 0 0 Total 1 36 102 199 102 42 482 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:, 7

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Neutral - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 3 7 7 13 0 31 NNE 0 2 4 6 4 0 16 NE 0 0 7 7 3 0 17 ENE 0 2 8 10 2 0 22 E 0 3 1 9 1 0 14 ESE 0 0 1 3 1 0 5 SE 0 0 1 6 10 4 21 SSE 0 0 4 9 14 1 28 S 0 2 10 25 3 7 47 SSW 1 3 11 42 14 5 76 SW 2 2 21 30 29 13 97 WSW 1 4 20 34 16 2 77 W 3 3 23 41 3 4 77 WNW 0 6 15 30 20 0 71 NW 2 4 11 24 0 2 43 NNW 0 3 5 24 8 0 40 Variable 0 0 0 0 0 0 0 Total 10 37 149 307 141 38 682 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1/

Hours of missing stability measurements in all stability classes:, 7

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Slightly Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 4____ --

2-- 0---- 0---

N 0 2 4 2 0 0 8 NNE 1 2 4 0 0 0 7 NE 0 0 3 3 1 0 7 ENE 1 1 0 1 0 0 3 E 0 1 0 1 0 0 2 ESE 0 0 0 2 1 0 3 SE 0 0 0 0 5 4 9 SSE 0 1 1 6 7 0 15 S 0 3 8 9 9 1 30 SSW 0 4 12 32 2 0 50 SW 0 1 7 15 3 0 26 WSW 0 0 9 22 6 0 37 W 0 1 8 22 2 0 33 WNW 1 2 3 19 8 0 33 NW 0 2 8 17 2 0 29 NNW 0 2 2 22 0 0 26 Variable 0 0 0 0 0 0 0 Total 3 22 69 173 46 5 318 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes, 77

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Moderately Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 0 0 0 2 NNE 0 2 0 0 0 3 NE 0 1 0 0 0 3 ENE 0 0 0 0 0 0 E 0 2 0 0 0 2 ESE 0 1 0 0 0 1 SE 1 0 1 0 0 2 SSE 1 0 4 1 0 8 S 0 3 9 4 0 22 SSW 0 1 15 0 0 23 SW 0 0 2 0 0 3 WSW 0 0 6 0 0 7 W 0 0 5 1 0 8 WNW 0 0 6 0 0 6 NW 0 0 6 0 0 6 NNW 0 0 18 0 0 22 Variable 0 0 0 0 0 0 Total 2 11 27 72 6 0 118 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesJ 7

Zion Nuclear Station Period of Record: October - December2005 Stability Class - Extremely Stable - 250Ft-33Ft Delta-T (F)

Winds Measured at 250 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 0 0 3 0 0 0 0 0 NNE 1 1 0 0 0 0 0 NE 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 1 0 1 0 0 0 SSE 1 1 10 2 0 0 S 2 2 4 0 18 0 00 0 SSW 1 3 0 8 0 10 0 SW 1 0 3 4 0

WSW 1 1 0 0 1 4 0

W 1 0 0 1 0 1 0

WNW 0 0 1 0 0 2 0

NW 0 5 2 0 7 0 0 NNW 0 1 0 0 1 0 0 Variable 0 0 0 0 0 Total 2 17 9 16 8 0 52 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classesi 7