Text

Submittal of 2012 Annual Radiological Environmental Operating Report
	ML13135A007
Person / Time
Site:	Duane Arnold
Issue date:	05/13/2013
From:	Richard Anderson; NextEra Energy Duane Arnold
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	NG-13-0173
	Download: ML13135A007 (99)
	v • d • e

NEXTera ENERGY= W ARNOLD May 13, 2013 NG-13-0173 TS 5.6.2 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Duane Arnold Energy Center Docket No. 50-331 Renewed Op. License No. DPR-49

Subject:

2012 Annual Radiological Environmental Operating Report Please find as Enclosure 1 to this letter, a copy of NextEra Energy Duane Arnold, LLC's, (hereafter, NextEra Energy Duane Arnold) 2012 Annual Radiological Environmental Operating Report for the Duane Arnold Energy Center, pursuant to the requirements of ODAM Section 8.2.2 and Technical Specification Section 5.6.2.

This letter contains no new commitments nor does it revise any existing commitments.

Should you have any questions regarding this matter, please contact Thomas R.

Byrne at (319) 851-7929.

Sincerely, l ard L. nes Vice President, Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC Enclosure cc: Regional Administrator, USNRC, Region IIl Resident Inspector, USNRC, Duane Arnold Energy Center Project Manager, USNRC, Duane Arnold Energy Center NnYtFr; a Fnern, finnn Arnnld II (. '977 nA=r PInnAr Ppin IA r9q9PgA NextEr tly I I I I

Enclosure 1 to NG-1 3-0173 Duane Arnold Energy Center 2012 Annual Radiological Environmental Operating Report 97 Pages to follow

2012 Annual Radiological Environmental Operating Report Duane Arnold Energy Center Primary Contributor: Date: M7"/h¶, 'I

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Reviewed /Approved By: Date: S- IL - 2of aý

WATI AI Environmental, Midwest Laboratory Inc.

700 Landwehr phone Road .Northbrook, (847) 564-0700 fL 60062-2310

- fax (847) 564-4517 DUANE ARNOLD ENERGY CENTER CEDAR RAPIDS, IOWA DOCKET NO. 50-331 REPORT to the UNITED STATES NUCLEAR REGULATORY COMMISSION Annual Radiological Environmental Operating Report January I to December 31, 2012 Prepared by ATI ENVIRONMENTAL, Inc.

Midwest Laboratory Project No. 8001 Approved:

PREFACE Staff members of the Environmental, Inc., Midwest Laboratory were responsible for the acquisition of data presented in this report, with the exception of Appendices D, E and F which were completed by DAEC personnel. All environmental samples, with the exception of aquatic, were collected by personnel of DAEC. Aquatic samples were collected by the University of Iowa Hygienic Laboratory.

The report was prepared by Environmental, Inc., Midwest Laboratory, with the exception of Appendices D, E and F, which were prepared by DAEC personnel.

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TABLE OF CONTENTS PART I No. Page PREFACE ..................................................................................................................... ii List of Tables ................................................................................................................. v List of Figures ......................................................................................................... vi 1.0 INTRO DUCTIO N........................................................................................................... 1 2.0 SUM MARY .......................................................................................................... 2 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM .......................... 3 3.1 Program Design and Data Interpretation .......................................................... 3 3.2 Program Description ......................................................................................... 4 3.2.1 Environm ental Monitoring ............................................................................... 4 3.2.2 G round W ater Protection Program ................................................................. 5 3.3 Program Execution ........................................................................................... 5 3.4 Laboratory Procedures ...................................................................................... 6 3.5 Program Modifications ...................................................................................... 6 4.0 RESULTS AND DISCUSSIO N ............................................................................... 7 4.1 Atmospheric Nuclear Detonations and Nuclear Accidents ................................ 7 4.2 Program Findings ............................................................................................. 7.

5.0 TABLES AND FIG URES ......................................................................................... 10

6.0 REFERENCES

CITED ........................................................................................... 25 APPENDICES A Interlaboratory Comparison Program Results ..................................................... A-1 B Data Reporting Conventions ............................................................................... B-1 C Effluent Concentration Limits for Radioactivity in Air and Water Above Background in Unrestricted Areas ............................................................... C-1 D Summary of the Land Use Census ...................................................................... D-1 E Annual Radiation Dose Assessment ........................................................................ E-1 F Errata from Previous Annual Reports ................................................................. F-1 iii

TABLE OF CONTENTS (continued)

PART II Page Data Tabulations and Analyses ...................................................................................... i iv

LIST OF TABLES No. Paqe 5.1 Characteristic Properties of Isotopes Quantified in Gamma-spectroscopic Analyses .................................................................................................. . . 11 5.2 Sample Collection and Analysis Program .............................................................. 12 5.3 Sampling Locations, DAEC .................................................................................... 14 5.4 Type and Frequency of Collections ........................................................................ 16 5.5 Sample Codes, Tables 5.4 and 5.6 ........................................................................ 17 5.6 Program Deviations ................................................................................................ 18 5.7 Radiological Environmental Monitoring Program Summary .................... 19 In addition, the following tables are included in the Appendices:

Appendix A A-1 Environmental Resource Associates (EPA DW substitute program) .................. Al-1 A-2 Interlaboratory Comparison Program Results, Thermoluminescent Dosimeters (TLDs) ...................................................................................... A2-1 A-3 In-house Spiked Samples ........................................................................................ A3-1 A-4 In-house "Blank" Samples ........................................................................................ A4-1 A-5 In-house "Duplicate" Samples ............................................................................. A5-1 A-6 Department of Energy MAPEP comparison results ................................................. A6-1 A-7 Environmental Resource Associates (EML substitute program) .............................. A7-1 Attachment A: Acceptance criteria for spiked samples ............................................ A-2 Appendix C C-1 Effluent Concentration Limits for Radioactivity in Air and Water Above Background in Unrestricted Areas .............................................................. C-2 v

LIST OF FIGURES No. Paqe 5.1 Radiological Environmental Monitoring Program Sampling Stations near the Duane Arnold Energy Center ................................................................... 23 5.2 Radiological Environmental Monitoring Program Sampling Stations Outside 0.5 Miles .................................................................................................. . . 24 vi

1.0 INTRODUCTION

This report summarizes and interprets results of the Radiological Environmental Monitoring Program conducted by Environmental, Inc., Midwest Laboratory at the Duane Arnold Energy Center, Palo, Iowa, during the period January - December, 2012. This Program monitors the levels of radioactivity in the air, terrestrial, and aquatic environments in order to assess the impact of the plant on its surroundings.

Tabulations of individual analyses made during the year are included in Part II of this report.

The Duane Arnold Energy Center (DAEC) is a boiling water reactor, located in Linn County, Iowa, on the Cedar River, and owned and operated by NextEra Energy Resources. Initial criticality was attained on March 23, 1974. The reactor reached 100% power on August 12, 1974. Commercial operation began on February 1, 1975.

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2.0

SUMMARY

The Radiological Environmental Monitoring Program, as required by the U.S. Nuclear Regulatory Commission (NRC) Technical Specifications for the Duane Arnold Energy Center, is herein described.

Results for the year 2012 are summarized and discussed.

Program findings show only background levels of radioactivity in the environmental samples collected in the vicinity of the Duane Arnold Energy Center.

Short-lived radioactive elements released into the environment following the Fukushima Daiichi incident, March 11, 2011, are no longer detectable in the background. It is possible that a slight increase in soil and sediment background activity could be observed, attributable to the release of longer-lived isotopes, e.g. Cs-134 and Cs-137.

No effect on the environment is indicated in the areas surrounding the site of the Duane Arnold Energy Center.

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3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 3.1 Program Design and Data Interpretation The purpose of the Radiological Environmental Monitoring Program at the Duane Arnold Energy Center (DAEC) is to assess the impact of the plant on its environment. For this purpose, samples are collected from the air, terrestrial, and aquatic environments and analyzed for radioactive content. In addition, ambient gamma radiation levels are monitored by thermoluminescent dosimeters (TLDs).

Sources of environmental radiation include the following:

(1) Natural background radiation arising from cosmic rays and primordial radionuclides; (2) Fallout from atmospheric nuclear detonations; (3) Releases from nuclear power plants; and (4) Industrial and medical radioactive waste.

In interpreting the data, effects due to the DAEC operation must be distinguished from those due to other sources.

A major interpretive aid in assessment of these effects is the design of the monitoring program at the DAEC which is based on the indicator-control concept. Most types of samples are collected both at indicator locations (nearby, downwind, or downstream) and at control locations (distant, upwind, or upstream). A station effect would be indicated if the radiation level at an indicator location was significantly larger than that at the control location. The difference would have to be greater than could be accounted for by typical fluctuations in radiation levels arising from other sources.

An additional interpretive technique involves analyses for specific radionuclides present in the environmental samples collected from the DAEC site. The DAEC's monitoring program includes analyses for strontium-90 and iodine-131, which are fission products, and tritium, which is produced by cosmic rays, atmospheric nuclear detonations, and also by nuclear power plants.

Most samples are also analyzed for gamma-emitting isotopes with results for the following groups quantified: zirconium-95, cesium-137, and cerium-144. These three gamma-emitting isotopes were selected as radiological impact indicators because of the different characteristic proportions in which they appear in the fission product mix produced by a nuclear reactor and that produced by a nuclear detonation. Each of the three isotopes is produced in roughly equivalent amounts by a reactor: each constitutes about 10% of the total activity of fission products ten (10) days after reactor shutdown. On the other hand, ten (10) days after a nuclear explosion, the contributions of zirconium-95, cerium-144, and cesium-137 to the activity of the resulting debris are in the approximate ratio 4:1:0.03 (Eisenbud,1963). The other group quantified consists of niobium-95, ruthenium-103 and -106, cesium-134, barium-lanthanum-140, and cerium-141. These isotopes are released in small quantities by nuclear power plants, but to date their major source of injection into the general environment has been atmospheric nuclear testing. Nuclides of the next group, manganese-54, cobalt-58 and-60, and zinc-65, are activation products and arise from activation of corrosion products. They are typical components of nuclear power plant effluents, but are not produced in significant quantities by nuclear detonations. Nuclides of the final group, beryllium-7, which is of cosmogenic origin, and potassium-40, a naturally-occurring isotope, were chosen as calibration monitors and provide a comparison between levels of naturally occurring radionuclides and radionuclides that could be attributed to the operation of the plant.

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Program Desiqn and Data Interpretation (continued)

Characteristic properties of isotopes quantified in gamma-spectroscopic analysis are presented in Table 5.1. Other means of distinguishing sources of environmental radiation can be employed in interpreting the data. Current radiation levels can be compared with previous levels, including those measured before the Plant became operational. Results of the DAEC's Monitoring Program can be related to those obtained in other parts of the world. Finally, results can be related to events known to cause elevated levels of radiation in the environment, e.g., atmospheric nuclear detonations.

3.2 Program Description 3.2.1 Environmental Monitoring The sampling and analysis schedule for the Radiological Environmental Monitoring Program (REMP) at the DAEC is summarized in Table 5.2 and is briefly reviewed below. Table 5.3 defines the sampling location codes used in Table 5.2 and specifies for each location its distance, direction, and sector relative to the reactor site. The types of samples collected at each location and the frequency of collections are presented in Table 5.4 using codes defined in Table 5.5.

To monitor the air environment, airborne particulates are collected on membrane filters by continuous pumping at nine locations. Airborne iodine is collected by continuous pumping through charcoal filters. Eight of the nine locations are indicators and one is a control (D-13). Filters are changed and counted weekly. Particulate filters are analyzed for gross beta activity. If gross beta activity exceeds ten times the yearly mean of the control samples, gamma isotopic analysis is performed. Quarterly composites of airborne particulates from each location are analyzed for gamma emitting isotopes. Charcoal filter samples are analyzed weekly for iodine-131.

Ambient gamma radiation is monitored at a total of 50 locations. A TLD is placed at each location and exchanged and analyzed quarterly. The TLD locations are distributed as follows:

Two on-site locations

" Eighteen in a circle within a 0.5 mi. radius from the DAEC stack.

Six in 22.5' sectors within 1 mi. from the DAEC stack.

Ten in 22.50 sectors between 1 and 3 miles from the DAEC stack.

" Ten control locations greater than 3 miles from the DAEC stack.

" Four along sections of the Independent Spent Fuel Storage Installation (ISFSI) fenceline.

Surface water is collected monthly from four river locations, D-49 (Lewis Access, Control, 4 mi.

upstream), D-50 (Inlet), D-51 (Discharge) and D-61 (downstream of Discharge) and also from Pleasant Creek Lake (D-99). The monthly samples are analyzed for tritium and gamma-emitting isotopes. Additional analyses are performed on samples collected from the control and indicator locations, D-49 and D-61. Analyses for low-level iodine-131 are performed on monthly collections and quarterly composites are prepared and analyzed for strontium-89 and strontium-90.

The aquatic environment is also monitored by upstream and downstream (D-49 and D-61) semiannual collections of fish. River bottom sediment is collected semiannually at the plant's intake and discharge (D-50 and D-51) and downstream of the sewage plant (D-107a). The samples are analyzed for gamma-emitting isotopes.

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Program Description (continued)

Potable ground water is collected quarterly from a treated municipal water system (D-53), the inlet to the municipal water treatment system (D-54), three indicator locations (D-55, D-57, D-58) and one control location (D-72). The samples are analyzed for gross beta and tritium. If gross beta measures greater than 3 pCi/L, or positive tritium is detected, an analysis for gamma emitters is performed. If a gross beta measurement is greater than 7 pCi/L, or reactor by-product gamma emitters are detected, analyses for Fe-55, Sr-89, Sr-90, Ni-63 and alpha emitters are performed.

Milk is collected monthly from one indicator and one control location during the non-grazing season, October through April, and biweekly during the grazing season, May 1 through September

30. The samples are analyzed for iodine-131 and gamma-emitting isotopes.

For additional monitoring of the terrestrial environment, grain, hay and broad leaf vegetation samples are collected annually, as available, from nine locations: one control (D-108) and eight indicators (D-16, D-57, D-58, D-72, D-96, D-109 and D-118). Grain, hay and broad leaf (green leafy) vegetation samples are analyzed for gamma-emitting isotopes and at least two broad leaf vegetation samples are analyzed for iodine-131.

If cattle are slaughtered for home use, a meat sample is collected annually, during or immediately following a grazing period from animals grazing on-site. The sample is analyzed for gamma-emitting isotopes.

3.2.2 Ground Water Protection Program Environmental, Inc., Midwest Laboratory provides laboratory services for the Duane Arnold Energy Center Ground Water Protection Program. For results from these analyses, refer to the Duane Arnold Energy Center, 2012 Annual Radioactive Effluent Release Report.

3.3 Program Execution The program was executed as described in the preceding section with the following exceptions:

(1) Airborne Particulates/ Airborne Iodine:

Air particulate / air iodine samples were not available at location D-13, for the weeks ending 08/09/12 through 09/06/12. The sampler was out of service due to power pole maintenance.

(2) Milk:

Milk was not available from location D-108 after the May, 22, 2012 collection. The farm went out of the dairy business.

(3) Thermoluminescent Dosimetry The first quarter, 2012 TLD at location D-36 was missing in the field. The TLD was replaced.

The third quarter, 2012 TLD at location D-41 was missing in the field. The TLD was replaced.

The fourth quarter, 2012 TLD at location D-17 was missing in the field. The TLD was replaced.

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Program Execution (continued)

(4) Vegetation Suitable vegetation samples were not available from locations D-58, D-72, and D-96 in 2012.

(5) Ground Water Due to human error, well water from the 4th quarter of 2012 was not collected until January 9th, 2013.

3.4 Laboratory Procedures The Iodine-1 31 analyses in milk and water were made using a sensitive radiochemical procedure involving separation of iodine using an ion-exchange method, solvent extraction and subsequent beta counting. Levels of iodine-131 in vegetation and concentrations of airborne iodine-131 in charcoal samples were determined by gamma spectroscopy.

Gamma-spectroscopic analyses are performed using high-purity germanium (HPGe) detectors.

The gamma isotopic analysis provides a spectrum with an energy range from 80 to 2048 KeV.

Specific isotopes included in the gamma library are Mn-54, Fe-59, Co-58, Co-60, Zn-65, Zr-95, Nb-95, Ru-103, Ru-106, 1-131, Ba-La-140, Cs-134, Cs-137, Ce-141, and Ce-144. Naturally occurring gamma-emitters, such as Be-7, K-40 and Ra daughters, are frequently detected but may not be listed.

Tritium was measured by liquid scintillation.

Analytical Procedures used by Environmental, Inc. are on file and are available for inspection.

Procedures are based on those prescribed by the Health and Safety Laboratory of the U.S. Dep't of Energy, Edition 28, 1997, U.S. Environmental Protection Agency for Measurement of Radioactivity in Drinking Water, 1980, and the U.S. Environmental Protection Agency, EERF, Radiochemical Procedures Manual, 1984.

Environmental, Inc., Midwest Laboratory has a comprehensive quality control/quality assurance program designed to assure the reliability of data obtained. Details of the QA Program are presented elsewhere (Environmental, Inc., Midwest Laboratory, 2013). The QA Program includes participation in Interlaboratory Comparison (crosscheck) Programs. Results obtained in crosscheck programs are presented in Appendix A.

3.5 Program Modifications Milk location (D-108, Control) was dropped from the program in June, 2012. The dairy sold off its herd. A replacement dairy (D-138) was located 13.4 miles WSW of the plant. Sampling started with the July 17, 2012 collection.

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4.0 RESULTS AND DISCUSSION All collections and analyses were made as scheduled, except for those listed in Table 5.6.

Results are summarized in Table 5.7 as recommended by the Nuclear Regulatory Commission.

For each type of analysis and sample medium, the table lists the mean and range of all indicator and control locations, as well as that location with the highest mean and range.

Tabulated results of measurements are not included in this section, although reference to these results will be made in discussion. A complete tabulation of results for 2012 is contained in Part II of the Annual Report on the Radiological Environmental Monitoring Program for the Duane Arnold Energy Center.

4.1 Atmospheric Nuclear Detonations and Nuclear Accidents There were no reported accidents involving significant release to the environment at nuclear reactor facilities in 2012. The Fukushima Daiichi nuclear accident occurred March 11, 2011.

There were no reported atmospheric nuclear tests in 2012. The last reported test was conducted on October 16, 1980 by the People's Republic of China.

4.2 Program Findings Results obtained show background levels of radioactivity in the environmental samples collected outside of the Owner Controlled Area in 2012. The trace levels of strontium-90 and cesium-137, still measurable in soil and sediments are attributed to deposition of fallout from previous decades.

Airborne Particulates The average annual gross beta concentrations in airborne particulates were almost identical at indicator and control locations (0.030 and 0.029 pCi/m 3, respectively) and similar to levels observed from 1995 through 2011. The results are tabulated below.

Year Indicators Controls Year Indicators Controls Concentration (pCi/m 3 ) Concentration (pCi/m 3 )

1997 0.023 0.023 2005 0.031 0.031 1998 0.024 0.024 2006 0.029 0.027 1999 0.026 0.027 2007 0.031 0.031 2000 0.026 0.027 2008 0.029 0.029 2001 0.026 0.026 2009 0.031 0.030 2002 0.027 0.027 2010 0.028 0.028 2003 0.029 0.029 2011 0.030 0.029 2004 0.028 0.028 2012 0.030 0.029 Average annual gross beta concentrations in airborne particulates.

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4.2 ProQram Findingqs, Airborne Particulates (continued)

Gamma spectroscopic analysis of quarterly composites of air particulate filters yielded similar results for indicator and control locations. Beryllium-7, produced continuously in the upper atmosphere by cosmic radiation (Arnold and AI-Salih, 1955), was detected in all samples, with an average activity of 0.070 pCi/m 3 for all locations. All other gamma-emitting isotopes were below their respective LLD limits.

Airborne Iodine 3

Weekly levels of airborne iodine-131 measured below the required limit of 0.030 pCi/m for all samples.

Ambient Radiation (TLDs)

At ten control locations, thermoluminescent dosimeter (TLD) readings averaged 17.5 mR/quarter.

At locations within a half mile, one mile and three mile radius of the stack, the measurements averaged 19.0, 20.2 and 17.0 mR/quarter, respectively. The two on-site locations D-15 and D-16 averaged 17.2 mR/quarter. The average for these locations was 18.4 mR/quarter. This is similar to the estimated average natural background radiation for Middle America, 19.5 mR/quarter, which is based on data on Pages 71 and 108 of the report, "Natural Background Radiation in the United States" (National Council on Radiation Protection and Measurements, 1975). The terrestrial absorbed dose (uncorrected for structural and body shielding) ranges from 8.8 to 18.8 mrad/quarter and averages 11.5 mrad/quarter for Middle America. Cosmic radiation and cosmogenic radionuclides contribute 8.0 mrad/quarter for a total average of 19.5 mrad/quarter. No plant effect is indicated.

ISFSI Facility Operations Monitoring Four TLDs, placed directionally along the ISFSI fenceline, averaged 31.7 mR/quarter.

Milk There was no iodine-1 31 activity detected in milk samples. lodine-131 measured below a detection limit of 0.5 pCi/L.

No gamma-emitting isotopes, excepting naturally occurring potassium-40, were detected in any milk samples. This is consistent with findings that most radiocontaminants in feed do not find their way into milk due to the selective metabolism of the cow. The common exceptions are radioisotopes of potassium, cesium, strontium, barium, and iodine (National Center for Radiological Health, 1968).

In summary, milk data for 2012 show no radiological effects of plant operation.

Ground Water (potable)

The annual mean for gross beta activity 1.9 pCi/L, similar to levels observed from 1991 through 2011. The location with the highest mean was D-58, a farm 1.0 mile distant from the plant.

Tritium activity in ground water measured below an LLD of 151 pCi/L.

No effect from plant operation is indicated.

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4.2 Program Findings (continued)

Vegetation Iodine-131 concentrations in broadleaf vegetation were below the LLD level of 0.013 pCilg wet weight in all samples.

With the exception of potassium-40, which was observed in all vegetation samples (broadleaf, grain, and forage), all other gamma-emitting isotopes were below detection limits. No effect from plant operation is indicated.

Surface Water Surface water was tested for tritium and gamma emitting isotopes in sixty samples from five locations. No measurable tritium activity was detected above an LLD of 159 pCi/L. Gamma-emitting isotopes were below detection limits.

Analyses for 1-131 were performed on samples from locations D-49 (control) and D-61 (0.5 mi.

downstream, indicator). Positive iodine-131 above LLD was detected in samples collected March 19, 2012, at both the control and indicator locations and measured 1.9 and 1,6 pCi/L, respectively.

Since the iodine was detected at both the upstream and downstream locations, there is no indication of a plant origin.

Quarterly composites were also prepared from the samples collected at locations D-49 and D-61 and tested for strontium-89 and strontium-90. All samples tested below detection limits.

No plant effect on surface water is indicated.

Fish Fish were collected in May and September, 2012, and analyzed for gamma-emitting isotopes. With the exception of naturally-occurring potassium-40 no gamma-emitting isotopes were identified in edible portions of fish. The potassium-40 level was similar at both the indicator and control locations (3.13 and 3.06 pCi/g wet, respectively). No plant effect on the fish population is indicated.

River Sediments River sediments were collected in May and November, 2012, and analyzed for gamma-emitting isotopes. Potassium-40 activity ranged from 6.28-8.39 pCi/g dry weight and averaged 7.41 pCi/g dry weight.

Cs-137 was not detected at either the indicator or control locations in 2012. Low levels had been observed from 1991 through 2011, any trace cesium activity is generally attributable to deposition of fallout from previous decades.

Other gamma-emitting isotopes were below detection limits. There is no indication of a plant effect.

Ground Water Protection Program Environmental, Inc., Midwest Laboratory provides laboratory services for the Duane Arnold Energy Center Ground Water Protection Program. For results from these analyses, refer to the Duane Arnold Energy Center, 2012 Annual Radioactive Effluent Release Report.

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5.0 TABLES AND FIGURES 10

Table 5.1 Characteristic properties of isotopes quantified in gamma-spectroscopic analyses.

Designation Comment Isotope Half-life a Naturally Occurring A. Cosmogenic Produced by interaction of cosmic rays Be-7 53.2 d with atmosphere B. Terrestrial Primordial K-40 1.26 x 109 y IL. Fission Products b Nuclear accidents and detonations constitute the major environmental source.

A. Short-lived 1-131 8.04 d Ba-140 12.8 d B. Other than Short-lived Nb-95 35.15 d Zr-95 65 d Ru-1 03 39.35 d Ru-1 06 368.2 d Cs-134 2.061 y Cs-137 30.174 y Ce-141 32.5 d Ce- 144 284.31 d Ill. Activation Products Typically found in nuclear power plant Mn-54 312.5 d effluents Fe-59 45.0 d Co-58 70.78 d Co-60 5.26 y Zn-65 245 d a

Half-lives are taken from Appendix E of Environmental Quarterly, 1 January 1978, EML-334 (U. S. Department of b Energy, 1978).

Includes fission-product daughters.

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Table 5.2 Sample collection and analysis program.

Sampling Location a Exposure Sample Description Sampling and Collection Type and Frequency Pathway and/or Point Frequency of Analysis b Sample Type Airborne 3 Hiawatha Continuous operation of Analyze for gross beta activity Particulates 5 Palo sampler with sample more than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after filter 6 Center Point collection at least once per change. Perform gamma 7 Shellsburg week or as required by isotopic analysis on each 11 Toddville dust loading, sample having gross beta 13 Alburnett (C) activity greater than ten times 15 On-site North the yearly mean of the control 16 On-site South samples.

40 Wickiup Hill Composite weekly samples to form a quarterly composite (by location). Analyze quarterly composite for gamma isotopic.

Airborne Iodine 3 Hiawatha Continuous operation of Analyze each cartridge for 5 Palo sampler with sample iodine-131.

6 Center Point collection at least once per 7 Shellsburg week.

11 Toddville 13 Alburnett (C) 15 On-site North 16 On-site South 40 Wickiup Hill Ambient 1-3, 5-8, Controls One dosimeter Read gamma radiation dose Radiation 10, 11, 13 continuously at each quarterly.

location.

Indicators Dosimeters are changed at 15-23, < 0.5 mi. of Stack least quarterly.

28-32, 82-86, 91 43-48 5 1.0 mi. of Stack 33-42 < 3.0 mi. of Stack 161-164 ISFSI Fenceline Surface Water 49 Lewis Acess (C) Once per month. Tritium and gamma isotopic 50 Plant Intake analyses for each sample (by 51 Plant Discharge location).

61 0.5 mi. downstream 99 Pleasant Creek Locations 49 and 61, analyses Lake for low level 1-131. Quarterly Composites for Sr-89, Sr-90.

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Table 5.2 Sample collection and analysis program, (continued).

Sampling Location a Exposure Sample Description Sampling and Collection Type and Frequency Pathway and/or Point Frequency of Analysis Sample Type Ground Water 53 Treated Municipal Grab sample at least Analysis for gross beta and tritium (potable) 54 Inlet to Municipal Wate once per quarter. on quarterly samples. Ifgross Treatment System beta measures > 3 pCi/L, OR tritium 55 On-site well concentration measures > MDA, perform gamma isotopic analyses.

57, 58 Wells off-site and 72 (C) within 4 km of DAEC If reactor by-product gamma emitters are identified, OR if gross beta measures > 7 pCi/L, analyze for Fe-55, Ni-63, Sr-89, Sr-90 and alpha emitters.

Vegetation 16, 57, 58, Farms that raise food Annually at harvest time. Gamma isotopic analysis of edible 72, 96, crops. One sample of each: portions.

109, 118 grain, green leafy, and forage. At least one 1-131 analysis on broadleaf 108 (C) sample should be vegetation.

broadleaf vegetation.

Fish 49 Cedar River upstream One sample per 6 Gamma isotopic analysis on of DAEC not months (once during edible portions.

influenced by effluent January through June (C) and once during July through December).

61 Downstream of DAEC in influence of effluent Milk r 108 (C) Farm near Watkins, At least once per two Gamma isotopic and iodine-131 Iowa weeks during the grazing analyses of each sample.

season.

110 Farm 7.9 mi. SW At least once per month 138 (C) Farm 13.4 mi. WSW during the non-grazing season.

River 50 Plant Intake (C) At least once every six Gamma isotopic analysis of each Sediment 51 Plant Discharge months. sample.

107a North Drainage Ditch (on-site)

Meat d On-site Annually Gamma Isotopic (C) denotes control location. All other locations are indicators.

bGamma isotopic analysis and analysis for gamma-emitting nuclides refer to high resolution gamma ray spectrum analysis.

cThe grazing season is considered to be May 1 through September 30.

dOnly sampled when meat is butchered for home use.

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Table 5.3 Sampling locations, Duane Arnold Energy Center.

Samplinq Location Code Location Description Distance and Direction from Site Stack D-1 Cedar Rapids 12.9 mi SE D-2 Marion 10.5 mi ESE D-3 Hiawatha 6.7 mi SE D-5 Palo 2.8 mi SSW D-6 Center Point 6.0 mi N D-7 Shellsburg 4.9 mi W D-8 Urbana 9.3 mi NNW D-10 Atkins 8.5 mi SSW D-11 Toddville 3.1 mi E D-13 Albumett 9.0 mi ENE D-15 On-site, North-Northwest 0.7 mi NNW D-1 6 On-site, South-Southeast 0.3 mi SSE D-17 On-site, N 0.7 mi N D-18 On-site, NNE 0.4 mi NNE D-19 On-site, NE 0.4 mi NE D-20 On-site, ENE 0.3 mi ENE D-21 On-site, ENE 0.3 mi ENE D-22 On-site, ESE 0.3 mi ESE D-23 On-site, SE 0.3 mi SE D-28 On-site, WSW 0.5 mi WSW D-29 On-site, W 0.4 mi W D-30 On-site, WNW 0.4 mi WNW D-31 On-site, NW 0.5 mi NW D-32 On-site, NNW 0.7 mi NNW D-33 3 mile ring N 2.7 mi N D-34 3 mile ring NNE 2.4 mi NNE D-35 3 mile ring NE 1.7 mi NE D-36 3 mile ring ENE 2.2 mi ENE D-37 3 mile ring E 1.8 mi E D-38 3 mile ring ESE 2.0 mi ESE D-39 3 mile ring SE 1.6 mi SE D-40 3 mile ring SSE 1.5 mi SSE D-41 3 mile ring S 3.5 mi S D-42 3 mile ring SSE 2.7 mi SSE D-43 1 mile ring SSW 1.0 mi SSW D-44 1 mile ring WSW 1.0 mi WSW D-45 1 mile ring W 0.9 mi W D-46 1 mile ring WNW 1.0 mi WNW D-47 1 mile ring NW 1.1 mi NW D-48 1 mile ring NNW 1.0 mi NNW 14

Table 5.3 Sampling locations, Duane Arnold Energy Center (continued).

Sampling Location Code Location Description Distance and Direction from Site Stack D-49 Lewis Access, upstream of DAEC 4.2 mi NNW D-50 Plant Intake 0.4 mi SE D-51 Plant Discharge 0.4 mi SE D-53 Treated Municipal Water 8.6 mi SE D-54 Inlet, Municipal Water Treatment System 8.6 mi SE D-55 Production Well On-site D-57 Farm (Off-site Well) 1.0 mi W D-58 Farm (Off-site Well) 1.0 mi WSW-SW D-61 Downstream of plant discharge 0.4 mi SSE D-72 Farm 2.0 mi SSW D-82 On-site, SSE 0.4 mi SSE D-83 On-site, SSE 0.4 mi SSE D-84 On-site, S 0.4 mi S D-85 On-site, SSW 0.4 mi SSW D-86 On-site, SW 0.5 mi SW D-91 On-site, NNW 0.7 mi NNW D-96 Farm 7.1 mi SSW D-99 Pleasant Creek Lake 2.4 mi WNW D-107a North Drainage Ditch On-site D-108 Farm 16.0 mi. SW D-109 Farm 3.7 mi. SW D-110 Farm 7.9 mi. SW D-118 Farm 1.45 mi. NW D-138 Farm 13.4 mi. WSW D-161 ISFSI Fence East On-site D-162 ISFSI Fence South On-site D-163 ISFSI Fence West On-site D-164 ISFSI Fence North On-site 15

Table 5.4 Type and Frequency of collection.

Location Weekly Monthly Quartely Semiannually Annually D-1 TLD D-2 TLD D-3 AP, AI TLD D-5 AP, Al TLD D-6 AP, Al TLD D-7 AP, Al TLD D-8 TLD D-10 TLD D-11 AP, Al TLD D-13 AP, Al TLD D-15 AP, Al TLD D-16 AP, Al TLD G D-17 to D-23 TLD D-28 to D-39 TLD D-40 AP, Al TLD D-41 to D-48 TLD D-49 SW F D-50 SW BS D-51 SW BS D-53 VVWW D-54 WW D-55 \NW D-57 WVW G D-58 VVW G D-61 SW F D-72 WW G D-82 to D-86 TLD D-91 TLD D-96 G D-99 SW D-107A BS D-108 MI* G D-109 G D-110 MI*

D-118 G D-138 MI*

D-161 to D-164 TLD On-site ME

Biweekly during the grazing season.

16

Table 5.5. Sample codes used in Table 5.4 and Table 5.6.

Code Description AP Airborne Particulates Al Airborne Iodine TLD Thermoluminescent Dosimeter MI Milk WW Well Water G Vegetation ME Meat SW Surface Water F Fish BS River Sediment 17

Table 5.6. Program Deviations, Duane Arnold Energy Center.

Sample Collection Date Type Analysis Location(s) or Period Comments AP/AI Gross Beta / 1-131 D-1 3 08/09/12 - Out of service due to 09/06/12 power line maintenance.

MI 1-131, Gamma D-108 06-05-12 Dairy out of business.

TLD Ambient Gamma D-36 1st Qtr. 2012 TLD missing in the field, TLD replaced.

TLD Ambient Gamma D-41 3rd Qtr. 2012 TLD missing in the field, TLD replaced.

TLD Ambient Gamma D-1 7 4th Qtr. 2012 TLD missing in the field, TLD replaced.

WW Gross Beta / H-3 D-53, D-54, D-55 4th Qtr. 2012 Samples were collected Jan. 9, 2013.

D-57, D-58, D-72 G Gamma D-58, D-72, D-96 2012 Vegetation samples not available.

In no instance did missed analyses affect minimum sampling requirements as specified in the ODAM.

18

Table 5.7 Radiological Environmental Monitoring Program Summary.

Name of Facility Duane Arnold Energy Center Docket No. 50-331 Location of Facility Linn, Iowa Reporting Period January-December, 2012 (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non-Type Number of LLD b Mean (F) c Mean (F) c Mean(F) c Routine (Units) Analyses 8 Range C Location d Range c Range C Results Airborne Pathway Airborne GB 472 0.003 0.029 (420/424) D-7, Shellsburg 0.030 (53/53) 0.025 (47148) 0 Particulates (0.006-0.083) 5 mi. W (0.012-0.083) (0.011-0.078) 3 (pCi/m ) GS 36 Be-7 0.020 0.070 (32/32) D-7, Shellsburg 0.076 (4/4) 0.073 (4/4) 0 (0.037-0.109) 5 mi. W (0.051-0.109) (0.045-0.105)

Mn-54 0.0013 < LLD < LLD 0 Fe-59 0.0035 < LLD < LLD 0 Co-58 0.0014 < LLD < LLD 0 Co-60 0.0020 < LLD < LLD 0 Zn-65 0.0024 < LLD < LLD 0 Nb-95 0.0019 < LLD < LLD 0 Zr-95 0.0023 < LLD < LLD 0 Ru-103 0.0016 < LLD < LLD 0 Ru-106 0.0095 < LLD < LLD 0 Cs-134 0.0015 < LLD < LLD 0 Cs-137 0.0012 < LLD < LLD 0 Ce-141 0.0026 < LLD < LLD 0 Ce-144 0.0062 < LLD < LLD 0 Airborne Iodine 1-131 472 0.030 < LLD < LLD 0 3

(pCi/m )

Direct Radiation TLDs (mR/quarter)

Control Locations Gamma 40 1.0 None D-8.Urbana 21.9 (4/4) 17.5 (40140) 0 10 mi. NW (20.6-24.6) (10.3-24.6)

Within 0.5 mi. Gamma 79 1.0 19.0 (79/79) D-29,On-site 23.0(4/4) None 0 of Stack (13.3-24.2) 0.5 mi. W (21.2-24.2)

Within 1.0 mi. Gamma 24 1.0 20.2 (24/24) D-48 21.8(4/4) None 0 of Stack (15.9-23.7) 1 mi. NNW (20.5-23.7)

Within 3.0 mi. Gamma 38 1.0 17.0 (38/38) D-38 18.6 (4/4) None 0 of Stack (13.1-20.4) 2 mi. ESE (17.2-19.5)

ISFSI border Gamma 16 1.0 31.7 (16/16) D-161 50.6(4/4) None 0 (11.4-52.3) ISFSI Fence (46.8-52.3) 19

Table 5.7 Radiological Environmental Monitoring Program Summary.

Name of Facility Duane Arnold Energy Center Docket No. 50-331 Location of Facility Linn, Iowa Reporting Period January-December, 2012 (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non-Type Number of LLD b Mean (F) c Mean (F) Mean (F) Routine (Units) Analyses Range' Location d Range' Range' Results Waterborne Pathway Ground Water, GB 24 0.0 1.9(18/20) D-58, Farm 3.7(4/4) < LLD 0 potable (pCi/L) (0.3-4.7) 1 mi. WSW-SW (3.1-4.7)

H-3 24 162 < LLD < LLD 0 Surface Water H-3 60 159 < LLD < LLD 0 (pCi/L) 1-131 24 0.5 1.6 (1/12) D-49 Lewis Access, 1.9 (1/12) 1.9 (1/12) 0 4.2 mi. NNW Sr-89 8 0.8 < LLD < LLD 0 Sr-90 8 0.6 < LLD < LLD 0 GS 60 Mn-54 4.3 < LLD < LLD 0 Fe-59 9.2 < LLD < LLD 0 Co-58 4.3 < LLD < LLD 0 Co-60 4.6 < LLD < LLD 0 Zn-65 11.1 < LLD < LLD 0 Nb-95 7.0 < LLD < LLD 0 Zr-95 9.5 < LLD < LLD 0 1-131 8.6 < LLD < LLD 0 Cs-134 4.4 < LLD < LLD 0 Cs-137 4.9 < LLD < LLD 0 Ba-140 23.0 < LLD < LLD 0 La-140 4.9 < LLD < LLD 0 Sediments GS 6 (pCi/g dry) K-40 1.0 7.40 (4/4) D-51, 7.86 (2/2) 7.41 (2/2) 0 (6.28-8.39) Plant Discharge (7.32-8.39) (7.21-7.62)

Mn-54 0.019 < LLD < LLD 0 Fe-59 0.052 < LLD < LLD 0 Co-58 0.020 < LLD < LLD 0 Co-60 0.016 < LLD < LLD 0 Zn-65 0.036 < LLD < LLD 0 Nb-95 0.032 < LLD < LLD 0 Zr-95 0.032 < LLD < LLD 0 Ru-103 0.028 < LLD < LLD 0 Ru-106 0.15 < LLD < LLD 0 Cs-134 0.014 < LLD < LLD 0 Cs-137 0.016 < LLD < LLD 0 Ce-141 0.054 < LLD < LLD 0 Ce-144 0.13 < LLD < LLD 0 20

Table 5.7 Radiological Environmental Monitoring Program Summary.

Name of Facility Duane Arnold Energy Center Docket No. 50-331 Location of Facility Linn, Iowa Reporting Period January-December, 2012 (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non-Type Number of LLD b Mean (F) j Mean (F)' Mean (F) C Routine (Units) Analyses _ _ Range' Location d Range' Range' Results e Ingestion Pathway Milk 1-131 33 0.5 < LLD < LLD 0 (pCi/L)

GS 33 K-40 100 1396 (18/18) D-138, Farm 1417 (15/15) 1417 (15/15) 0 (1283-1517) 13.4 mi. WSW (1173-1680) (1173-1680)

Cs-134 5 < LLD < LLD 0 Cs-137 5 < LLD < LLD 0 Ba-140 60 < LLD < LLD 0 La-140 5 < LLD < LLD 0 Broadleaf 1-131 2 0.013 < LLD none 0 Vegetation (pCi/g wet) GS 2 K-40 0.5 1.89 (2/2) D-118, Farm 1.90 (2/2) none 0 (1.83-1.96) 1.45 mi. NW (1.83-1.96)

Mn-54 0.009 < LLD none 0 Co-58 0.006 < LLD none 0 Co-60 0.006 < LLD none 0 Zn-65 0.013 < LLD none 0 Nb-95 0.006 < LLD none 0 Zr-95 0.018 < LLD none 0 Ru-103 0.009 < LLD none 0 Ru-106 0.050 < LLD none 0 Cs-1 34 0.007 < LLD none 0 Cs-1 37 0.009 < LLD none 0 Ce-141 0.012 < LLD none 0 Ce-144 0.054 < LLD none 0 Vegetation GS 10 (Grain and Forage) K-40 0.5 7.43 (7/7) D-138, Farm 12.64 (1/1) 9.65 (3/3) 0 (pCi/g wet) (2.22-19.33) 13.4 mi. WSW (2.11-14.20)

Mn-54 0.041 < LLD < LLD 0 Co-58 0.044 < LLD < LLD 0 Co-60 0.034 < LLD < LLD 0 Zn-65 0.053 < LLD < LLD 0 Nb-95 0.045 < LLD < LLD 0 Zr-95 0.065 < LLD < LLD 0 Ru-103 0.038 < LLD < LLD 0 Ru-106 0.45 < LLD < LLD 0 Cs-134 0.039 < LLD < LLD 0 Cs-137 0.041 < LLD < LLD 0 Ce-141 0.062 < LLD < LLD 0 Ce-144 0.28 < LLD < LLD 0 21

Table 5.7 Radiological Environmental Monitoring Program Summary.

Name of Facility Duane Arnold Energy Center Docket No. 50-331 Location of Facility Linn, Iowa Reporting Period January-December, 2012 (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non-Type Number of LLD Mean (F) c Mean (F) c Mean (F) c Routine (Units) Analyses _ _ Range' Location d Range Range Results Ingestion Pathway (cont.)

Fish GS 8 (pCi/g wet) K-40 1.0 3.13 (4/4) D-61, 3.13(4/4) 3.06(4/4) 0 (2.81-3.35) Downstream (2.81-3.35) (2.85-3.33)

Mn-54 0.015 < LLD < LLD 0 Fe-59 0.032 < LLD < LLD 0 Co-58 0.017 < LLD < LLD 0 Co-60 0.019 < LLD < LLD 0 Zn-65 0.031 < LLD < LLD 0 Nb-95 0.024 < LLD < LLD 0 Zr-95 0.042 < LLD < LLD 0 Ru-103 0.021 < LLD < LLD 0 Ru-106 0.11 < LLD < LLD 0 Cs-134 0.015 < LLD < LLD 0 Cs-137 0.017 < LLD < LLD 0 Ce-141 0.040 < LLD < LLD 0 Ce-144 0.120 < LLD < LLD 0 GB = Gross beta; GS = Gamma spectroscopy LLD = Nominal lower limit of detection based on 4.66 sigma counting error for the background sample.

'Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (F).

d Locations are specified by: (1) Name and code (Table 5.3); and (2) distance, direction and sector relative to reactor site.

Non-routine results are those which exceed ten times the control station value for the location. If a control station value is not available, the result is considered non-routine if it exceeds ten times the preoperational value for the location.

22

Figure 5.1 Radiological Environmental Monitoring Program Sampling Stations near the Duane Arnold Energy Center.

+

N I - --- 17-

4 18 1l 32 2I

,I 31 32I 19 30 20 I-55 107a 57 29 58 2000 feet See Table 5.3 for sampling locations and Table 5.4 for Type and Frequency of collection.

23

Figure 5.2. Radiological Environmental Monitoring Program Sampling Stations Outside 0.5 Miles.

See Table 5.3 for sampling locations and Table 5.4 for Type and Frequency of collection.

24

6.0 REFERENCES

CITED Arnold, J. R. and H.A. AI-Salih. 1955. Beryllium-7 Produced by Cosmic Rays. Science 121: 451-453.

Eisenbud, M. 1963. Environmental Radioactivity, McGraw-Hill, New York, New York, pp. 213, 275-276.

Environmental, Inc., Midwest Laboratory.

2001 through 2013. Environmental Radiological Monitoring Program for the Duane Arnold Energy Center, Annual Report - Part II, Data Tabulations and Analyses, January - December, 2001 -2012.

1984 to 2000. (formerly Teledyne Brown Engineering, Environmental Services, Midwest Laboratory)

Environmental Radiological Monitoring Program for the Duane Arnold Energy Center, Annual Report

- Part II, Data Tabulations and Analyses, January - December, 1983 - 1999.

___ 1982 to 1984. (formerly Hazleton Environmental Sciences Corporation) Environmental Radiation Monitoring for the Duane Arnold Energy Center, Annual Report - Part II, Data Tabulations and Analyses, January - December 1981 - 1983.

2012. Quality Assurance Program Manual, Rev. 3, 14 November 2012.

2009. Quality Control Procedures Manual, Rev. 2, 08 July 2009.

2009. Quality Control Program, Rev. 2, 12 November 2009.

Gold, S., H. W. Barkhau, B. Shlein, and B. Kahn, 1964. Measurement of Naturally Occurring Radionuclides in Air, in the Natural Environment, University of Chicago Press, Chicago, Illinois, 369-382.

National Center for Radiological Health, 1968. Radiological Health and Data Reports, Vol. 9, Number 12, 730-746.

U. S. Department of Energy. 1978. Environmental Quarterly, Appendix E. Half-Life Tables, 1 January 1978, EML-334.

U. S. Nuclear Regulatory Commission. 1977. Regulatory Guide 1.109, Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 1 OCFR Part 50, Appendix I.

Wilson, D. W., G. M. Ward and J. E. Johnson. 1969. In Environmental Contamination by Radioactive Materials, International Atomic Energy Agency. p.125.

25

Environmental, Midwest Laboratory Inc.

700 Landweir Ro

Northbrook. IL 60062-2310 phone (847) 564-0700 - fax (847) 564-4517 APPENDIX A INTERLABORATORY COMPARISON PROGRAM RESULTS NOTE: Environmental Inc., Midwest Laboratory participates in intercomparison studies administered by Environmental Resources Associates, and serves as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada. Results are reported in Appendix A. TLD Intercomparison results, in-house spikes, blanks, duplicates and mixed analyte performance evaluation program results are also reported. Appendix A is updated four times a year; the complete Appendix is included in March, June, September and December monthly progress reports only.

January, 2012 through December, 2012

Appendix A Interlaboratory Comparison ProQram Results Environmental, Inc., Midwest Laboratory has participated in interlaboratory comparison (crosscheck) programs since the formulation of it's quality control program in December 1971. These programs are operated by agencies which supply environmental type samples containing concentrations of radionuclides known to the issuing agency but not to participant laboratories. The purpose of such a program is to provide an independent check on a laboratory's analytical procedures and to alert it of any possible problems.

Participant laboratories measure the concentration of specified radionuclides and report them to the issuing agency. Several months later, the agency reports the known values to the participant laboratories and specifies control limits. Results consistently higher or lower than the known values or outside the control limits indicate a need to check the instruments or procedures used.

Results in Table A-1 were obtained through participation in the environmental sample crosscheck program administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada.

Table A-2 lists results for thermoluminescent dosimeters (TLDs), via International Intercomparison of Environmental Dosimeters, when available, and internal laboratory testing.

Table A-3 lists results of the analyses on in-house "spiked" samples for the past twelve months. All samples are prepared using NIST traceable sources. Data for previous years available upon request.

Table A-4 lists results of the analyses on in-house "blank" samples for the past twelve months. Data for previous years available upon request.

Table A-5 lists REMP specific analytical results from the in-house "duplicate" program for the past twelve months. Acceptance is based on the difference of the results being less than the sum of the errors.

Complete analytical data for duplicate analyses is available upon request.

The results in Table A-6 were obtained through participation in the Mixed Analyte Performance Evaluation Program.

Results in Table A-7 were obtained through participation in the environmental sample crosscheck program administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the Environmental Measurement Laboratory Quality Assessment Program (EML).

Attachment A lists the laboratory precision at the 1 sigma level for various analyses. The acceptance criteria in Table A-3 is set at +/- 2 sigma.

Out-of-limit results are explained directly below the result.

Al

Attachment A ACCEPTANCE CRITERIA FOR "SPIKED" SAMPLES LABORATORY PRECISION: ONE STANDARD DEVIATION VALUES FOR VARIOUS ANALYSESa One standard deviation Analysis Level for single determination Gamma Emitters 5 to 100 pCi/liter or kg 5.0 pCi/liter

> 100 pCi/liter or kg 5% of known value Strontium-89b 5 to 50 pCi/liter or kg 5.0 pCi/liter

> 50 pCi/liter or kg 10% of known value Strontium-90b 2 to 30 pCi/liter or kg 5.0 pCi/liter

> 30 pCi/liter or kg 10% of known value Potassium-40 > 0.1 g/liter or kg 5% of known value Gross alpha < 20 pCi/liter 5.0 pCi/liter

> 20 pCi/liter 25% of known value Gross beta < 100 pCi/liter 5.0 pCi/liter

> 100 pCi/liter 5% of known value Tritium < 4,000 pCi/liter + la =

169.85 x (known)933

> 4,000 pCi/liter 10% of known value Radium-226,-228 > 0.1 pCi/liter 15% of known value Plutonium > 0.1 pCi/liter, gram, or sample 10% of known value Iodine-131, < 55 pCi/liter 6 pCi/liter Iodine-129b > 55 pCi/liter 10% of known value Uranium-238, < 35 pCi/liter 6 pCi/liter Nickel-63b > 35 pCi/liter 15% of known value Technetium-99b Iron-55b 50 to 100 pCi/liter 10 pCi/liter

> 100 pCi/liter 10% of known value Other Analyses b 20% of known value B From EPA publication, "Environmental Radioactivity Laboratory Intercompanson Studies Program, Fiscal Year, 1981-1982, EPA-600/4-81-004.

b Laboratory limit.

A2

TABLE A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA) a Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Result b Result c Limits Acceptance ERW-1783 04/09/12 Sr-89 62.2 +/- 6.0 58.5 46.9 -66.3 Pass ERW-1783 04/09/12 Sr-90 33.7 +/- 2.1 37.4 27.4 -43.1 Pass ERW-1786 04/09/12 Ba-1 33 75.7 +/- 4.1 82.3 69.1 -90.5 Pass ERW-1786 04/09/12 Co-60 71.9 +/- 4.0 72.9 65.6 - 82.6 Pass ERW-1786 04/09/12 Cs-1 34 70.0 +/- 4.3 74.2 60.6 -81.6 Pass ERW-1786 04/09/12 Cs-137 151.5 +/- 6.1 155.0 140.0 - 172.0 Pass ERW-1786 04/09/12 Zn-65 108.3 +/- 89.0 105.0 94.5 - 125.0 Pass ERW-1789 04/09/12 Gr. Alpha 55.0 +/- 2.4 62.9 33.0 -78.0 Pass ERW-1789 d 04/09/12 Gr. Beta 76.2 +/- 1.8 44.2 29.6 -51.5 Fail ERW-1795 04/09/12 Ra-226 6.4 +/- 0.4 5.7 4.3 - 6.9 Pass ERW-1795 04/09/12 Ra-228 5.4 +/- 1.2 4.6 2.7 - 6.3 Pass ERW-1795 04/09/12 Uranium 56.2 +/- 2.6 61.5 50.0 - 68.2 Pass ERW-1 798 04/09/12 H-3 16023 +/- 355 15800 13800 -17400 Pass ERW-6283 10/05/12 Sr-89 41.5 +/-4.1 39.1 29.7 -46.1 Pass ERW-6283 10/05/12 Sr-90 19.7 +/- 1.6 20.1 14.4 -23.8 Pass ERW-6286 10/05/12 Ba-133 82.7 +/- 4.4 84.8 71.3 -93.3 Pass ERW-6286 10/05/12 Co-60 77.2 +/- 3.7 78.3 70.5 - 88.5 Pass ERW-6286 10/05/12 Cs-134 74.4 +/- 1.5 76.6 62.6 - 84.3 Pass ERW-6286 10/05/12 Cs-137 183.0 +/- 6.2 183.0 165.0 -203.0 Pass ERW-6286 10/05/12 Zn-65 211.0 +/- 9.9 204.0 184.0 - 240.0 Pass ERW-6288 10/05/12 Gr. Alpha 47.0 +/- 2.3 58.6 30.6 - 72.9 Pass ERW-6288 10/05/12 Gr. Beta 33.4 +/- 1.2 39.2 26.0 -46.7 Pass ERW-6290 10/05/12 1-131 23.3 +/- 1.0 24.8 20.6 - 29.4 Pass ERW-6295 6 10/05/12 Ra-226 17.5 +/- 0.7 15.0 11.2 -17.2 Fail ERW-6295 e 10/05/12 Ra-228 7.4 +/- 1.5 4.6 2.7 -6.2 Fail ERW-6295 10/05/12 Uranium 61.2 +/- 1.8 62.5 50.8 - 69.3 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

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

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

d Result of reanalysis: 38.3 +/- 1.3 pCiIL. Sample dilution problem suspected. A new dilution was prepared.

Results of reanalyses, original submission (pCi/L): Ra-226, 16.5 +/- 0.7 Ra-228, 4.9 +/- 1.1 A new test was ordered from Environmental Resources Associates, results will be updated for first quarter, 2013.

Al-1

TABLE A-2. Thermoluminescent Dosimetry, (TLD, CaSO 4 : Dy Cards).

mR Lab Code Date Known Lab Result Control Description Value +/- 2 sigma Limits Acceptance Environmental, Inc.

2012-1 2/7/2012 30 cm. 74.87 87.22 +/- 2.86 52.41 -97.33 Pass

+/- 4.53 29.48 - 54.76 Pass 2012-1 2/7/2012 40 cm. 42.12 53.70 2012-1 2/7/2012 50 cm. 26.95 33.04 +/- 1.96 18.87 - 35.04 Pass 2012-1 2/7/2012 70 cm. 13.75 13.26 +/- 1.15 9.63 - 17.88 Pass 2012-1 2/7/2012 75 cm. 11.98 13.38 +/- 1.68 8.39 - 15.57 Pass 2012-1 2/7/2012 80 cm. 10.53 11.27 +/- 0.95 7.37 - 13.69 Pass 2012-1 2/7/2012 90 cm. 8.32 7.79 +/- 0.83 5.82 - 10.82 Pass 2012-1 2/7/2012 100 cm. 6.74 5.91 +/- 0.25 4.72 -8.76 Pass 2012-1 2/7/2012 110 cm. 5.57 4.63 +/- 0.83 3.90 -7.24 Pass 2012-1 2/7/2012 120 cm. 4.68 3.96 +/- 1.68 3.28 -6.08 Pass 2012-1 2/7/2012 150 cm. 2.99 2.41 +/- 0.08 2.09 - 3.89 Pass 2012-1 2/7/2012 180 cm. 2.08 2.02 +/- 0.25 1.46 -2.70 Pass Environmental, Inc.

2012-2 9/11/2012 40 cm. 33.75 43.74 +/- 1.31 23.63 -43.88 Pass 2012-2 9/11/2012 50 cm. 21.6 25.37 +/- 0.82 15.12 - 28.08 Pass 2012-2 9/11/2012 60 cm. 15 16.63 +/- 0.45 10.50 - 19.50 Pass 2012-2 9/11/2012 70 cm. 11.02 10.58 +/- 0.20 7.71 -14.33 Pass 2012-2 9/11/2012 80 cm. 8.44 8.55 +/- 1.18 5.91 - 10.97 Pass 2012-2 9/11/2012 90 cm. 6.67 5.75 +/- 0.33 4.67 - 8.67 Pass 2012-2 9/11/2012 100 cm. 5.4 4.44 +/- 0.22 3.78 - 7.02 Pass 2012-2 9/11/2012 110 cm. 4.46 3.85 +/- 0.05 3.12 -5.80 Pass 2012-2 9/11/2012 120 cm. 3.75 3.03 +/- 0.71 2.63 -4.88 Pass 2012-2 9/11/2012 150 cm. 2.4 1.82 +/- 0.10 1.68 -3.12 Pass 2012-2 9/11/2012 180 cm. 1.67 1.19 +/- 0.34 1.17 -2.17 Pass A2-1

TABLE A-3. In-House "Spiked" Samples Concentration (pCi/L)"

Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 c Activity Limits d Acceptance SPW-41824 2/15/2012 Ra-228 24.85 +/- 2.14 28.75 20.13 -37.38 Pass W-22712 2/27/2012 Gr. Alpha 14.59 +/- 0.34 20.00 10.00 - 30.00 Pass W-22712 2/27/2012 Gr. Alpha 43.57 +/- 0.40 41.70 20.85 -62.55 Pass SPAP-1032 3/5/2012 Cs-134 7.06 +/- 1.71 5.26 0.00 - 15.26 Pass SPAP-1032 3/5/2012 Cs-137 102.63 +/- 3.13 104.24 93.82 - 114.66 Pass SPAP-1034 3/5/2012 Gr. Beta 44.30 +/- 0.11 46.88 28.13 -65.63 Pass SPW-1 036 3/5/2012 Cs-1 34 43.23 +/- 3.84 39.42 29.42 - 49.42 Pass SPW-1 036 3/5/2012 Cs-1 37 57.44 +/- 4.60 52.12 42.12 -62.12 Pass SPW-1 036 3/5/2012 Sr-90 60.51 +/- 1.93 61.52 49.22 - 73.82 Pass SPMI-1038 3/5/2012 Cs-1 34 37.79 +/- 4.06 39.42 29.42 - 49.42 Pass SPM1-1038 3/5/2012 Cs-1 37 54.75 +/- 5.09 52.12 42.12 -62.12 Pass SPW-1045 3/5/2012 H-3 68022 +/- 746 69048 55238 - 82858 Pass SPW-1047 3/5/2012 Ni-63 217.10 +/- 3.64 206.64 144.65 - 268.63 Pass SPW-1049 3/5/2012 C-14 3858.90 +/- 12.79 4738.80 2843.28 - 6634.32 Pass W-31412 3/14/2012 Ra-226 13.13 +/- 0.36 16.70 11.69 - 21.71 Pass SPW-1520 3/23/2012 U-238 45.67 +/- 2.02 41.70 29.19 -54.21 Pass SPW-41825 4/10/2012 Ra-228 28.48 +/- 2.51 28.35 19.85 -36.86 Pass WW-1 547 4/16/2012 Ba- 133 18.99 +/- 4.67 26.70 16.70 - 36.70 Pass WW-1547 4/16/2012 Cs-1 34 9.28 +/- 2.82 8.68 0.00 - 18.68 Pass WW-1547 4/16/2012 Cs-1 37 27.77 +/- 4.49 29.70 19.70 - 39.70 Pass W-51712 5/17/2012 Ra-226 17.29 +/- 0.43 16.70 11.69 - 21.71 Pass W-61112 6/11/2012 Gr. Alpha 22.16 +/- 0.45 20.00 10.00 -30.00 Pass W-61112 6/11/2012 Gr. Beta 43.57 +/- 0.40 45.20 35.20 - 55.20 Pass SPAP-4418 7/25/2012 Gr. Beta 43.74 +/- 0.11 46.50 27.90 -65.10 Pass SPAP-4420 7/25/2012 Cs-1 34 4.54 +/- 0.73 4.60 2.76 - 6.44 Pass SPAP-4420 7/25/2012 Cs-1 37 104.70 +/- 2.77 103.30 92.97 -113.63 Pass SPMI-4422 7/25/2012 Co-60 31.43 +/- 2.12 31.62 21.62 -41.62 Pass SPMI-4422 7/25/2012 Cs-134 16.50 +/- 1.17 16.15 6.15 -26.15 Pass SPMI-4422 7/25/2012 Cs- 137 29.60 +/- 2.61 26.64 16.64 - 36.64 Pass SPMI-4422 7/25/2012 Sr-90 31.60 +/- 1.35 30.47 24.38 - 36.56 Pass SPW-4424 7/25/2012 Co-60 38.52 +/- 1.76 37.95 27.95 - 47.95 Pass SPW-4424 7/25/2012 Cs-137 33.23 +/- 2.27 32.01 22.01 -42.01 Pass SPW-4424 7/25/2012 Sr-90 36.56 +/- 1.58 40.60 32.48 - 48.72 Pass SPF--4426 7/25/2012 Cs- 134 947.50 +/- 42.50 1025.00 922.50 - 1127.50 Pass SPF-4426 7/25/2012 Cs- 137 2692.00 +/- 62.40 2480.00 2232.00 - 2728.00 Pass SPW-4428 7/25/2012 C-14 4325.70 +/- 15.80 4738.80 2843.28 - 6634.32 Pass SPW-4430 7/25/2012 H-3 70119.40 +/- 773.40 67570.00 54056.00 - 81084.00 Pass SPW-4432 7/25/2012 Ni-63 187.20 +/- 3.85 206.80 144.76 - 268.84 Pass W-81712 8/17/2012 Ra-226 14.94 +/- 0.40 16.70 11.69 - 21.71 Pass SPW-5407 8/29/2012 U-238 42.95 +/- 0.11 41.70 29.19 - 54.21 Pass SPW-18022 9/10/2012 Ra-228 29.03 +/- 2.80 28.21 19.75 - 36.67 Pass A3-1

TABLE A-3. In-House "Spiked" Samples Concentration (pCi/L)2 Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 c Activity Limits d Acceptance W-91012 9/10/2012 Gr. Alpha 19.95 +/- 0.42 20.00 10.00 -30.00 Pass W-91012 9/10/2012 Gr. Beta 43.47 +/- 0.40 45.20 35.20 -55.20 Pass W-100312 10/3/2012 Gr. Alpha 19.95 +/- 0.41 20.00 10.00 -30.00 Pass W-100312 10/3/2012 Gr. Beta 44.21 +/- 0.40 45.20 35.20 -55.20 Pass W-101812 10/18/2012 Ra-226 18.80 +/- 0.43 16.70 11.69 -21.71 Pass ESO-7235 12/6/2012 Sr-90 138.79 +/- 2.67 161.05 128.84 - 193.26 Pass SPW-7753 12/6/2012 U-238 45.55 +/- 5.05 41.70 29.19 -54.21 Pass SPW-18023 12/18/2012 Ra-228 31.59 +/- 2.99 25.98 18.19 -33.77 Pass a Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/m3 ), and solid samples (pCi/g).

b Laboratory codes : W (Water), Ml (milk), AP (air filter), SO (soil), VE (vegetation), CH (charcoal canister), F (fish), U (urine).

c Results are based on single determinations.

d Control limits are established from the precision values listed in Attachment A of this report, adjusted to +/- 2 a.

NOTE: For fish, Jello is used for the Spike matrix. For Vegetation, cabbage is used for the Spike matrix.

A3-2

TABLE A-4. In-House "Blank" Samples Concentration (pCi/L)a Lab Code Sample Date Analysisb Laboratory results (4.66a) Acceptance Type LLD Activityc Criteria (4.66 a)

SPW-41814 Water 2/15/2012 Ra-228 0.65 0.49 +/- 0.36 2 W-22712 Water 2/27/2012 Gr. Alpha 0.42 -0.04 +/- 0.29 1 W-22712 Water 2/27/2012 Gr. Beta 0.74 -0.54 +/- 0.50 3.2 SPAP-1031 Air Filter 3/5/2012 Cs- 134 1.89 100 SPAP-1031 Air Filter 3/5/2012 Cs-137 1.16 100 SPAP-1033 Air Filter 3/5/2012 Gr. Beta 0.003 0.013 +/- 0.003 0.01 SPW-1035 Water 3/5/2012 Cs-134 2.40 10 SPW-1035 Water 3(5(2012 Cs- 137 2.88 10 SPW-1035 Water 3/5/2012 1-131(G) 2.35 20 SPW-1035 Water 3/5/2012 Sr-90 0.60 -0.11 +/- 0.26 1 SPMI-1037 Milk 3/5/2012 Cs-134 2.85 10 SPMI-1037 Milk 3/5/2012 Cs-137 3.73 10 SPMI-1037 Milk 3/5/2012 1-131(G) 3.24 20 SPW-1044 Water 3/5/2012 H-3 146.10 37.10 +/- 74.40 200 SPW-1046 Water 3/5/2012 Ni-63 19.07 8.30 +/- 11.79 20 SPW-1048 Water 3/5/2012 C-14 5.70 2.99 +/- 3.04 200 SPW-1 166 water 3/9/2012 C-14 6.79 1.11 200 W-31412 Water 3/14/2012 Ra-226 0.034 0.043 +/- 0.027 1 SPW-1 521 Water 312312012 U-238 0.10 0.09 +/- 0.11 1 W-51712 Water 4/24/2012 Ra-226 0.04 0.04 +/- 0.03 W-61112 Water 6/11/2012 Gr. Alpha 0.47 -0.14 +/- 0.32 W-61112 Water 6/11/2012 Gr. Beta 0.71 0.29 +/- 0.51 3.2 SPW-41815 Water 7/7/2011 Ra-228 0.77 0.52 +/- 0.42 2 SPAP-4417 Air Filter 7/25/2012 Gr. Beta 0.001 0.021 +/- 0.003 0.01 SPMI-4421 Milk 7/25/2012 Co-60 4.29 10 SPMI-4421 Milk 7/25/2012 Cs- 134 3.58 10 SPMI-4421 Milk 7/25/2012 Cs-137 4.60 10 SPMI-4421 Milk 7/25/2012 Sr-90 0.45 0.53 +/- 0.27 1 SPW-4423 Water 7/25/2012 Co-60 1.88 10 SPW-4423 Water 7/25/2012 Cs-1 34 2.38 10 SPW-4423 Water 7/25/2012 Cs-1 37 2.80 10 SPW-4423 water 7/25/2012 Sr-90 0.45 0.08 +/- 0.22 1 SPF-4425 Fish 7/25/2012 Co-60 6.74 100 SPF-4425 Fish 7/25/2012 Cs-134 7.47 100 SPF-4425 Fish 7/25/2012 Cs-137 9.62 100 SPW-4427 Water 7/25/2012 C-14 10.93 3.54 +/- 5.84 200 SPW-4431 Water 7/25/2012 Ni-63 19.00 5.50 +/- 11.70 20 W-81712 Water 8/17/2012 Ra-226 0.038 0.035 +/- 0.030 1 SPW-5408 Water 8129/2012 U-238 0.039 0.015 +/- 0.057 1 A4-1

TABLE A-4. In-House "Blank" Samples Concentration (pCi/L)a Lab Code Sample Date Analysis' Laboratory results (4.66c) Acceptance Type LLD Activityc Criteria (4.66 a)

SPW-18032 Water 9/10/2012 Ra-228 0.78 0.85 +/- 0.46 2 W-91012 Water 9/10/2012 Gr. Alpha 0.42 0.027 +/- 0.29 1 W-91012 Water 9/10/2012 Gr. Beta 0.75 -0.13 +/- 0.52 3.2 W-1 00312 Water 10/3/2012 Gr. Beta 0.77 -0.32 +/- 0.53 3.2 W-100312 Water 10/3/2012 Gr. Beta 0.43 0.06 +/- 0.30 3.2 W-101812 Water 10/18/2012 Ra-226 0.04 0.038 +/- 0.031 1 SPW-7754 Water 12/6/2012 U-238 0.10 0.022 +/- 0.075 1 SPW-18033 Water 12/18/2012 Ra-228 0.98 0.43 +/- 0.50 2 Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

b 1-131 (G); iodine-1 31 as analyzed by gamma spectroscopy.

c Activity reported is a net activity result. For gamma spectroscopic analysis, activity detected below the LLD value is not reported.

A4-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)2 Averaged Lab Code Date Analysis First Result Second Result Result Acceptance CF-20, 21 1/3/2012 Gr. Beta 14.50 +/- 0.29 15.02 +/- 0.30 14.76 +/- 0.21 Pass CF-20, 21 1/3/2012 K-40 12.88 +/- 0.55 12.40 +/- 0.53 12.64 +/- 0.38 Pass CF-20, 21 1/3/2012 Sr-90 0.01 + 0.01 0.01 +/- 0.01 0.01 +/- 0.00 Pass P-9133, 9134 1/3/2012 H-3 108.86 + 83.03 206.60 +/- 86.38 157.73 +/- 59.91 Pass U-302, 303 1/17/2012 Beta (-K40) 6.84 +/- 2.91 5.24 +/- 2.56 6.04 +/- 1.94 Pass S-386, 387 1/23/2012 Ac-228 0.77 +/-0.11 0.79 +/- 0.14 0.78 +/- 0.09 Pass S-386, 387 1/23/2012 Bi-214 0.80 + 0.07 0.73 +/- 0.11 0.77 +/- 0.07 Pass S-386, 387 1/23/2012 Pb-214 0.74 +/- 0.06 0.75 +/- 0.11 0.75 +/- 0.06 Pass S-386, 387 1/23/2012 TI-208 0.21 + 0.02 0.21 +/- 0.04 0.21 +/- 0.02 Pass S-386, 387 1/23/2012 U-235 0.05 + 0.02 0.12 +/- 0.05 0.09 +/- 0.03 Pass WV-619, 620 1/31/2012 H-3 257.20 + 86.00 305.80 +/- 88.30 281.50 +/- 61.63 Pass MI-702, 703 2/6/2012 K-40 1337.00 +/- 123.00 1460.40 +/- 102.00 1398.70 +/- 79.90 Pass WW-892, 893 2/17/2012 Gr. Beta 3.46 + 0.56 3.77 +/- 0.59 3.61 +/- 0.41 Pass S-850, 851 2/22/2012 Cs-134 0.14 + 0.02 0.13 +/- 0.02 0.14 +/- 0.01 Pass S-850, 851 2/22/2012 Cs-137 0.21 +/- 0.03 0.22 +/- 0.03 0.22 +/- 0.02 Pass W-1251, 1252 3/6/2012 Gr. Alpha 1.20 +/- 0.62 1.27 +/- 0.92 1.24 +/- 0.55 Pass W-1251, 1252 3/6/2012 Gr. Beta 16.86 + 1.43 15.14 +/- 1.34 16.00 +/- 0.98 Pass W-1251, 1252 3/6/2012 H-3 5235.52 +/- 230.91 4893.24 +/- 224.55 5064.38 +/- 161.05 Pass W-1251, 1252 3/6/2012 Tc-99 19.67 +/- 3.60 14.46 +/- 3.51 17.07 +/- 2.51 Pass AP-1209, 1210 3/8/2012 Be-7 0.24 +/- 0.12 0.20 +/- 0.11 0.22 +/- 0.08 Pass XMVVA-1564, 1565 3/14/2012 H-3 308.00 +/- 88.00 293.00 +/- 87.00 300.50 +/- 61.87 Pass SG-1438, 1439 3/19/2012 Ac-228 6.01 +/- 0.30 6.23 +/- 0.31 6.12 +/- 0.22 Pass SG-1438, 1439 3/19/2012 Pb-214 4.69 +/- 0.49 5.20 +/- 0.54 4.95 +/- 0.36 Pass MVW-1585, 1586 3/19/2012 H-3 3124.50 +/- 176.96 2982.38 +/- 173.62 3053.44 +/- 123.96 Pass AP-2103, 2104 3/28/2012 Be-7 0.080 +/- 0.016 0.076 +/- 0.013 0.078 +/- 0.010 Pass AP-2166, 2167 3/28/2012 Be-7 0.061 +/- 0.020 0.071 +/- 0.016 0.066 +/- 0.013 Pass AP-1632, 1633 3/29/2012 Be-7 0.26 +/- 0.12 0.24 +/- 0.12 0.25 +/- 0.08 Pass E-1653, 1654 4/2/2012 Gr. Beta 1.53 +/- 0.05 1.55 +/- 0.04 1.54 +/- 0.03 Pass E-1653, 1654 4/2/2012 K-40 1.34 +/- 0.13 1.36 +/- 0.14 1.35 +/-0.10 Pass SG-1677, 1678 4/2/2012 Ac-228 6.63 +/- 0.37 6.49 +/- 0.33 6.56 +/- 0.25 Pass SG-1677, 1678 4/2/2012 Pb-214 4.77 +/- 0.16 5.07 +/- 0.14 4.92 +/- 0.11 Pass SWU-1719, 1720 4/3/2012 Gr. Beta 1.16 +/- 0.41 1.53 +/- 0.44 1.35 +/- 0.30 Pass W-1698, 1699 4/5/2012 Gr. Beta 10.86 +/- 1.49 9.42 +/- 1.32 10.14 +/- 1.00 Pass W-1698, 1699 4/5/2012 Ra-226 0.41 +/- 0.15 0.67 +/- 0.18 0.54 +/- 0.12 Pass W-1698, 1699 4/5/2012 Ra-228 1.46 +/- 0.76 1.48 +/- 0.74 1.47 +/- 0.53 Pass SG-1761, 1762 4/10/2012 Ac-228 16.26 +/- 0.53 16.55 +/- 0.44 16.41 +/- 0.34 Pass SG-1761, 1762 4/10/2012 Pb-214 14.16 +/- 1.44 15.40 +/- 1.56 14.78 +/- 1.06 Pass AP-2019, 2020 4/12/2012 Be-7 0.17 +/- 0.10 0.17 +/- 0.08 0.17 +/- 0.07 Pass DW-2272, 2273 4/20/2012 1-131 0.52 +/- 0.24 0.49 +/- 0.27 0.51 +/- 0.18 Pass DW-2356, 2357 4/24/2012 Gr. Beta 12.82 +/- 2.01 9.47 +/- 1.74 11.14 +/- 1.33 Pass A5-1

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance G-2403, 2404 5/1/2012 Be-7 1.77 +/- 0.21 1.55 +/- 0.33 1.66 +/- 0.20 Pass G-2403, 2404 5/1/2012 K-40 6.38 +/- 0.50 6.93 +/- 0.72 6.66 +/- 0.44 Pass BS-2445, 2446 5/1/2012 Gr. Beta 8.92 +/- 1.52 9.29 +/- 1.63 9.11 +/- 1.11 Pass BS-2445, 2446 5/1/2012 K-40 5.86 +/- 0.38 6.22 +/- 0.48 6.04 +/- 0.31 Pass SWU-2550, 2551 5/1/2012 Gr. Beta 2.07 +/- 0.65 1.59 +/- 0.62 1.83 +/- 0.45 Pass WWN-2614, 2615 5/1/2012 Gr. Beta 2.03 +/- 1.04 2.36 +/- 1.14 2.20 +/- 0.77 Pass WWN-2614, 2615 5/1/2012 H-3 750.60 +/- 106.20 653.20 +/- 102.30 701.90 +/- 73.73 Pass BS-2656, 2657 5/2/2012 Cs-1 37 0.13 +/- 0.07 0.07 +/- 0.04 0.10 +/- 0.04 Pass BS-2656, 2657 5/2/2012 K-40 10.15 +/- 0.97 11.13 +/- 0.90 10.64 +/- 0.66 Pass SO-2635, 2636 5/3/2012 Cs-1 37 0.046 +/- 0.024 0.050 +/- 0.027 0.048 +/- 0.018 Pass SO-2635, 2636 5/3/2012 K-40 13.20 +/- 0.74 14.01 +/- 0.67 13.61 +/- 0.50 Pass MI-2677, 2678 5/7/2012 K-40 1415.30 +/- 131.40 1348.10 +/- 109.00 1381.70 +/- 85.36 Pass VE-2719, 2720 5/7/2012 K-40 4.15 +/- 0.36 4.19 +/- 0.38 4.17 +/- 0.26 Pass SWU-3221, 3222 5/8/2012 Gr. Beta 1.67 +/- 0.47 1.39 +/- 0.45 1.53 +/- 0.33 Pass SWU-3221, 3222 5/8/2012 H-3 236.90 +/- 101.90 281.90 + 103.70 259.40 +/- 72.69 Pass WW-3073, 3074 5/14/2012 H-3 339.12 +/- 145.45 337.23 +/- 98.19 338.18 +/- 87.74 Pass AP-2968, 2969 5/17/2012 Be-7 0.25 +/- 0.12 0.21 +/- 0.09 0.23 +/- 0.07 Pass F-3031, 3032 5/22/2012 H-3 11291.00 +/- 372.80 11167.00 +/- 315.00 11229.00 +/- 244.03 Pass F-3031, 3032 5/22/2012 K-40 3528.90 +/- 372.80 3677.20 +/- 392.40 3603.05 +/- 270.63 Pass G-3094, 3095 5/23/2012 Gr. Beta 7.89 +/- 0.16 8.01 +/- 0.16 7.95 +/- 0.11 Pass F-3412, 3413 5/23/2012 Gr. Beta 3.46 +/- 0.10 3.33 +/- 0.10 3.40 +/- 0.07 Pass F-3412, 3413 5/23/2012 K-40 2.40 +/- 0.38 2.55 +/- 0.43 2.48 +/- 0.29 Pass MI-3067, 3068 5/24/2012 K-40 1267.20 +/- 105.00 1305.70 +/- 109.80 1286.45 +/- 75.96 Pass SO-3305, 3306 5/30/2012 Cs-137 0.024 +/- 0.013 0.030 +/- 0.015 0.027 +/- 0.010 Pass SO-3305, 3306 5/30/2012 Gr. Beta 10.95 +/- 0.89 10.86 +/- 0.89 10.91 +/- 0.63 Pass SO-3305, 3306 5/30/2012 TI-208 0.068 +/- 0.018 0.062 +/- 0.017 0.065 +/- 0.012 Pass LW-3454, 3455 5/31/2012 Gr. Beta 2.12 +/- 0.86 2.27 +/- 0.77 2.20 +/- 0.58 Pass BS-3697, 3698 6/14/2012 Be-7 2.05 +/- 0.19 2.27 +/- 0.38 2.16 +/- 0.21 Pass BS-3697, 3698 6/14/2012 Cs-1 37 2.32 +/- 0.39 2.26 +/- 0.66 2.29 +/- 0.38 Pass BS-3697, 3698 6/14/2012 K-40 6.67 +/- 0.28 6.64 +/- 0.42 6.66 +/- 0.25 Pass VE-3798, 3799 6/20/2012 K-40 5.93 +/- 0.38 6.03 +/- 0.37 5.98 +/- 0.26 Pass WW-4790, 4791 6/20/2012 H-3 251.33 +/- 86.51 372.48 +/- 92.27 311.90 +/- 63.24 Pass DW-30103, 30104 6/27/2012 Ra-226 0.30 +/- 0.08 0.42 +/- 0.09 0.36 +/- 0.06 Pass DW-30103, 30104 6/27/2012 Ra-228 0.76 +/- 0.54 0.78 +/- 0.54 0.77 +/- 0.38 Pass LW-3970, 3971 6/28/2012 Gr. Beta 1.49 +/- 1.06 0.72 +/- 0.53 1.11 +/-0.59 Pass DW-3949, 3950 6/29/2012 1-131 0.54 +/- 0.26 0.25 +/- 0.26 0.40 +/- 0.18 Pass SG-4075, 4076 7/2/2012 Ac-228 0.33 +/- 0.09 0.34 +/- 0.06 0.34 +/- 0.05 Pass SG-4075, 4076 7/2/2012 K-40 6.71 +/- 0.58 7.20 +/- 0.32 6.96 +/- 0.33 Pass SG-4075, 4076 7/2/2012 Pb-214 0.46 +/- 0.05 0.49 +/- 0.03 0.48 +/- 0.03 Pass AP-4390, 4391 7/3/2012 Be-7 0.09 +/- 0.02 0.09 +/- 0.01 0.09 +/- 0.01 Pass AP-4390, 4391 7/3/2012 Be-7 0.11 +/- 0.02 0.10 +/- 0.01 0.11 +/- 0.01 Pass AP-4012, 4013 7/5/2012 Be-7 0.27 +/- 0.09 0.29 +/- 0.16 0.28 +/- 0.09 Pass SW-4033, 4034 7/5/2012 H-3 614.99 +/- 107.99 512.31 +/- 103.83 563.65 +/- 74.91 Pass A5-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance VE-4054, 4055 7/9/2012 K-40 7.28 +/- 0.56 7.42 +/- 0.63 7.35 +/- 0.42 Pass VE-4222, 4223 7/13/2012 Be-7 0.16 +/- 0.08 0.22 +/- 0.09 0.19 +/- 0.06 Pass VE-4222, 4223 7/13/2012 K-40 7.20 +/- 0.30 6.60 +/- 0.30 6.90 +/- 0.21 Pass DW-30113, 30114 7/13/2012 Ra-228 1.93 +/- 0.66 1.03 +/- 0.53 1.48 +/- 0.42 Pass DW-30115, 30116 7/13/2012 Gr. Alpha 7.46 +/- 1.21 7.02 +/- 1.14 7.24 +/- 0.83 Pass DW-30124, 30125 7/13/2012 Ra-226 1.16 +/- 0.15 0.90 +/- 0.12 1.03 +/- 0.10 Pass DW-30124, 30125 7/13/2012 Ra-228 1.38 +/- 0.56 1.72 +/- 0.60 1.55 +/- 0.41 Pass DW-30126, 30127 7/13/2012 Gr. Alpha 6.23 +/- 1.16 6.75 +/- 1.29 6.49 +/- 0.87 Pass AP-4433, 4434 7/19/2012 Be-7 0.17 +/- 0.09 0.21 +/- 0.10 0.19 +/- 0.07 Pass SG-4475, 4476 7/19/2012 Gr. Alpha 17.03 +/- 4.17 15.56 +/- 3.96 16.30 +/- 2.88 Pass SG-4475, 4476 7/19/2012 Gr. Beta 13.23 +/- 2.61 14.36 +/- 2.47 13.80 +/- 1.80 Pass MN-4685, 4686 7/24/2012 H-3 289.00 +/- 99.00 375.00 +/- 103.00 332.00 +/- 71.43 Pass AP-4706, 4707 7/26/2012 Be-7 0.28 +/- 0.14 0.24 +/- 0.14 0.26 +/- 0.10 Pass SO-4748, 4749 7/26/2012 Gr. Beta 20.45 +/- 1.04 19.22 +/- 0.94 19.84 +/- 0.70 Pass SO-4748, 4749 7/26/2012 U-233/4 0.11 +/- 0.02 0.10 +/- 0.01 0.11 +/- 0.01 Pass SO-4748, 4749 7/26/2012 U-238 0.12 +/- 0.02 0.11 +/- 0.01 0.12 +/- 0.01 Pass VE-4832, 4833 8/1/2012 K-40 4.06 +/- 0.22 4.08 +/- 0.24 4.07 +/- 0.16 Pass DW-30149, 30150 8/1/2012 Ra-226 2.69 +/- 0.22 2.79 +/- 0.22 2.74 +/- 0.16 Pass DW-30149, 30150 8/1/2012 Ra-228 2.77 +/- 0.75 1.61 +/- 0.57 2.19 +/- 0.47 Pass SG-4916, 4917 8/3/2012 Ac-228 11.03 +/- 0.33 11.08 +/- 0.44 11.06 +/- 0.28 Pass SG-4916, 4917 8/3/2012 K-40 6.39 +/- 0.80 6.98 +/- 0.88 6.69 +/- 0.59 Pass F-5313, 5314 8/9/2012 Cs-1 37 0.05 +/- 0.02 0.05 +/- 0.02 0.05 +/- 0.01 Pass F-5313, 5314 8/9/2012 Gr. Beta 4.12 +/- 0.08 4.10 +/- 0.08 4.11 +/- 0.06 Pass F-5313, 5314 8/9/2012 K-40 3.07 +/- 0.42 3.14 +/- 0.40 3.11 +/- 0.29 Pass VE-5166, 5167 8/15/2012 K-40 4.26 +/- 0.28 3.66 +/- 0.47 3.96 +/- 0.27 Pass VE-5376, 5377 8/22/2012 Gr. Beta *7.72 +/- 0.17 7.61 +/- 0.16 7.67 +/- 0.12 Pass VE-5334, 5335 8/27/2012 K-40 1.65 +/- 0.17 1.72 +/- 0.15 1.68 +/- 0.12 Pass VE-5481, 5482 8/28/2012 Be-7 2.52 +/- 0.19 2.65 +/- 0.21 2.59 +/- 0.14 Pass VE-5481, 5482 8/28/2012 K-40 5.05 +/- 0.37 4.79 +/- 0.39 4.92 +/- 0.27 Pass VE-5481, 5482 8/28/2012 Sr-90 0.01 +/- 0.00 0.01 +/- 0.01 0.01 +/- 0.00 Pass DW-30164, 30165 8/30/2012 Ra-226 1.33 +/- 0.15 1.59 +/- 0.17 1.46 +/- 0.11 Pass DW-30164, 30165 8/30/2012 Ra-228 2.76 +/- 0.66 1.54 +/- 0.56 2.15 +/- 0.43 Pass VE-5166, 5167 9/4/2012 K-40 2.05 +/- 0.32 2.53 +/- 0.36 2.29 +/- 0.24 Pass ME-5607, 5608 9/4/2012 Gr. Beta 2.92 +/- 0.08 2.89 +/- 0.08 2.90 +/- 0.06 Pass ME-5607, 5608 9/4/2012 K-40 2.06 +/- 0.32 2.53 +/- 0.36 2.29 +/- 0.24 Pass SW-5901, 5902 9/17/2012 H-3 10909.00 +/- 311.00 10817.00 +/- 310.00 10863.00 +/- 219.56 Pass BS-6048, 6049 9/24/2012 K-40 1.24 +/- 0.20 1.18 +/- 0.21 1.21 +/- 0.14 Pass AP-6482, 6483 9/27/2012 Be-7 0.09 +/- 0.02 0.09 +/- 0.03 0.09 +/- 0.02 Pass A5-3

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)"

Averaged Lab Code Date Analysis First Result Second Result Result Acceptance G-6090, 6091 10/1/2012 Be-7 3.74 +/- 0.33 3.54 +/- 0.30 3.64 +/- 0.22 Pass G-6090, 6091 10/1/2012 Gr. Beta 10.81 +/- 0.34 10.72 +/- 0.33 10.77 +/- 0.24 Pass G-6090, 6091 10/1/2012 K-40 5.99 +/- 0.47 5.45 +/- 0.44 5.72 +/- 0.32 Pass SO-6111, 6112 10/1/2012 Cs-137 0.06 +/- 0.03 0.04 +/- 0.02 0.05 +/- 0.02 Pass SO-6111, 6112 10/1/2012 K-40 19.66 +/- 0.84 20.09 +/- 0.80 19.88 +/- 0.58 Pass W-6795, 6796 10/1/2012 H-3 215.20 +/- 88.00 292.80 +/- 91.60 254.00 +/- 63.51 Pass AP-6461, 6462 10/2/2012 Be-7 0.07 +/- 0.01 0.07 +/- 0.02 0.07 +/- 0.01 Pass WW-6279, 6280 10/3/2012 Gr. Beta 1.54 +/- 0.68 1.67 +/- 0.75 1.61 +/- 0.51 Pass W-6346, 6347 10/3/2012 Ra-226 0.30 +/- 0.10 0.36 +/- 0.10 0.33 +/- 0.07 Pass VE-6503, 6504 10/9/2012 K-40 5.23 +/- 0.83 6.00 +/- 0.45 5.04 +/- 0.27 Pass WM-6606, 6607 10/10/2012 Gr. Beta 3.18 +/- 1.31 2.42 +/- 1.27 2.80 +/- 0.91 Pass WW-6606, 6607 10/10/2012 H-3 273.10 +/- 85.70 219.80 +/- 83.10 246.45 +/- 59.69 Pass WW-7237, 7238 10/12/2012 H-3 175.44 +/- 99.84 180.75 +/- 100.03 178.10 +/- 70.66 Pass F-6627, 6628 10/15/2012 K-40 3.05 +/- 0.39 3.23 +/- 0.37 3.14 +/- 0.27 Pass VE-6669, 6670 10/16/2012 Be-7 0.48 +/- 0.26 0.50 +/- 0.13 0.49 +/- 0.15 Pass VE-6669, 6670 10/16/2012 K-40 4.06 +/- 0.28 3.68 +/- 0.26 3.87 +/- 0.19 Pass SS-6711, 6712 10/16/2012 Ac-228 0.16 +/- 0.05 0.17 +/- 0.06 0.17 +/- 0.04 Pass SS-6711, 6712 10/16/2012 Bi-214 0.13 +/- 0.03 0.16 +/- 0.03 0.14 +/- 0.02 Pass SS-6711, 6712 10/16/2012 Gr. Beta 14.20 +/- 0.89 12.67 +/- 0.88 13.44 +/- 0.63 Pass SS-6711, 6712 10/16/2012 Pb-212 0.15 +/- 0.06 0.13 +/- 0.02 0.14 +/- 0.03 Pass SS-6711, 6712 10/16/2012 TI-208 0.06 +/- 0.02 0.04 +/- 0.02 0.05 +/- 0.01 Pass WAN-7258, 7259 10/22/2012 H-3 214.69 +/- 85.42 314.60 +/- 90.25 264.65 +/- 62.13 Pass WM-7655, 7656 10/25/2012 H-3 159.00 +/- 86.10 159.00 +/- 86.10 159.00 +/- 60.88 Pass WW-7747, 7748 10/25/2012 H-3 156.50 +/- 84.70 170.20 +/- 85.30 163.35 +/- 60.10 Pass MI-6963, 6964 10/28/2012 K-40 1384.60 +/- 111.70 1421.60 +/- 107.60 1403.10 +/- 77.55 Pass MI-7174, 7175 11/5/2012 K-40 1283.60 +/- 97.45 1293.20 +/- 91.37 1288.40 +/- 66.79 Pass SG-7221, 7222 11/9/2012 Pb-214 31.49 +/- 0.70 30.11 +/- 0.80 30.80 +/- 0.53 Pass DW-30216, 30217 11/9/2012 Gr. Alpha 2.23 +/- 0.86 2.31 +/- 0.92 2.27 +/- 0.63 Pass DW-30216, 30217 11/9/2012 Ra-226 0.72 +/- 0.12 0.82 +/- 0.14 0.77 +/- 0.09 Pass DW-30216, 30217 11/9/2012 Ra-228 0.92 +/- 0.52 1.26 +/- 0.53 1.09 +/- 0.37 Pass MI-7363, 7364 11/13/2012 K-40 1304.40 +/- 103.30 1496.10 +/- 121.30 1400.25 +/- 79.66 Pass CF-7384, 7385 11/13/2012 K-40 11.75 +/- 0.52 10.94 +/- 0.59 11.35 +/- 0.39 Pass VE-7489, 7490 11/16/2012 K-40 2.22 +/- 0.23 1.91 +/- 0.22 2.06 +/- 0.16 Pass AP-7531, 7532 11/21/2012 Be-7 0.19 +/- 0.10 0.29 +/- 0.17 0.24 +/- 0.10 Pass BS-7573, 7574 11/24/2012 K-40 7.21 +/- 0.41 7.57 +/- 0.39 7.39 +/- 0.28 Pass LW-7865, 7866 12/5/2012 Gr. Beta 2.16 +/- 0.56 1.64 +/- 0.62 1.90 +/- 0.42 Pass SG-8095, 8096 12/19/2012 Ac-228 25.15 +/- 0.73 25.47 +/- 0.54 25.31 +/- 0.45 Pass SG-8095, 8096 12/19/2012 Gamma 26.98 +/- 2.72 28.68 +/- 2.89 27.83 +/- 1.98 Pass Note: Duplicate analyses are performed on every twentieth sample received in-house. Results are not listed for those analyses with activities that measure below the LLD.

8 Results are reported in units of pCi/L, except for air filters (pCi/Filter), food products, vegetation, soil, sediment (pCi/g).

A5-4

TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP)

Concentration a Known Control Lab Code b Date Analysis Laboratory result Activity Limits c Acceptance STW-1670 02/01/12 1-129 9.31 +/- 0.31 12.29 8.60 - 15.98 Pass STSO-1 766

02/01/12 Am-241 88.50 +/- 8.30 159.00 111.00 -207.00 Fail STSO-1766 02/01/12 Co-57 1352.10 +/- 4.00 1179.00 825.00 - 1533.00 Pass STSO-1766 02/01/12 Co-60 1.70 +/- 0.70 1.56 1.00 -2.00 Pass STSO-1766 02/01/12 Cs-134 842.20 +/- 4.30 828.00 580.00 - 1076.00 Pass STSO-1766 02/01/12 Cs-1 37 0.40 +/- 0.90 0.00 0.00 - 1.00 Pass STSO-1 766 02/01/12 K-40 1729.60 +/- 22.20 1491.00 1044.00 - 1938.00 Pass STSO-1766 02/01/12 Mn-54 647.60 +/- 4.20 558.00 391.00 -725.00 Pass STSO-1766 02/01/12 Ni-63 781.50 +/- 9.70 862.00 603.00 - 1121.00 Pass STSO-1766 02/01/12 Pu-238 142.40 +/- 9.70 136.00 97.00 - 177.00 Pass STSO-1766 02/01/12 Pu-239/40 66.10 +/- 6.40 65.80 46.10 - 85.50 Pass STSO-1766 02/01/12 Sr-90 383.20 +/- 15.30 392.00 274.00 -510.00 Pass STSO-1 766 02/01/12 Tc-99 289.60 +/- 10.90 374.00 262.00 - 486.00 Pass STSO-1766 02/01/12 U-233/4 63.20 +/- 5.40 68.10 47.70 -88.50 Pass STSO-1766 02/01/12 U-238 310.80 +/- 12.10 329.00 230.00 - 428.00 Pass STSO-1766 02/01/12 Zn-65 766.70 +/- 6.70 642.00 449.00 - 835.00 Pass STAP-1772 02/01/12 Am-241 0.062 +/- 0.02 0.073 0.051 -0.10 Pass STAP-1772 02/01/12 Co-57 0.010 +/- 0.01 0.00 0.000 -1.00 Pass STAP-1772 02/01/12 Co-60 2.40 +/- 0.08 2.18 1.53 -2.84 Pass STAP-1 772 02/01/12 Cs-134 2.33 +/- 0.13 2.38 1.67 -3.09 Pass STAP-1772 02/01/12 Cs-137 2.07 +/- 0.10 1.79 1.25 -2.33 Pass STAP-1772 02/01/12 Mn-54 3.77 +/- 0.14 3.24 2.27 -4.21 Pass STAP-1772 02/01/12 Pu-238 0.003 +/- 0.004 0.002 0.000 -0.10 Pass STAP-1772 02/01/12 Pu-239/40 0.098 +/- 0.017 0.097 0.07 -0.13 Pass STAP-1772 02/01/12 Sr-90 -0.010 +/- 0.060 0.000 -0.10 -0.13 Pass STAP-1 7726 02/01/12 U-233/4 0.016 +/- 0.006 0.019 0.013 -0.024 Pass STAP-1 772 02/01/12 U-238 0.11 +/- 0.02 0.12 0.09 -0.16 Pass STAP-1772 02/01/12 Zn-65 3.67 +/- 0.20 2.99 2.09 -3.89 Pass STAP-1773 02/01/12 Gr. Alpha 0.51 +/- 0.05 1.20 0.40 - 2.00 Pass STAP-1773 02/01/12 Gr. Beta 2.75 +/- 0.10 2.40 1.20 - 3.60 Pass STVE-1776 02/01/12 Co-57 14.57 +/- 0.28 12.00 8.40 - 15.60 Pass STVE-1776 02/01/12 Co-60 6.45 +/- 0.23 6.05 4.24 - 7.87 Pass STVE-1776 02/01/12 Cs-134 8.39 +/- 0.29 8.43 5.90 - 10.96 Pass STVE-1776 02/01/12 Cs-I 37 0.01 +/- 0.09 0.00 0.00 -0.10 Pass STVE-1776 02/01/12 Mn-54 0.03 +/- 0.08 0.00 0.00 -0.10 Pass STVE-1776 02/01/12 Zn-65 10.31 +/- 0.67 8.90 6.23 -11.57 Pass STW-1960 02/01/12 Gr. Alpha 1.68 +/- 0.09 2.14 0.64 -3.64 Pass STW-1960 02/01/12 Gr. Beta 6.33 +/- 0.10 6.36 3.18 -9.54 Pass A6-1

TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP).

Concentration a Known Control Lab Code b Date Analysis Laboratory result Activity Limits ' Acceptance STW-1964 02/01/12 Am-241 1.28 +/- 0.12 1.63 1.14 -2.12 Pass STW-1 964 02/01/12 Co-57 33.30 +/- 0.40 32.90 23.00 - 42.80 Pass STW-1 964 02/01/12 Co-60 23.20 +/- 0.40 23.72 16.60 - 30.84 Pass STW-1964 02/01/12 Cs- 134 0.30 +/- 3.00 0.00 0.00 - 1.00 Pass STW-1964 02/01/12 Cs-I 37 40.10 +/- 0.60 39.90 27.90 -51.90 Pass STW-1964 02/01/12 Fe-55 65.10 +/- 9.50 81.90 57.30 - 106.50 Pass STW-1964 02/01/12 H-3 460.00 +/- 12.10 437.00 306.00 - 568.00 Pass STW-1964 02/01/12 K-40 153.00 +/- 4.20 142.00 99.00 - 185.00 Pass STW-1964 02/01/12 Mn-54 32.70 +/- 0.60 31.80 22.30 - 41.30 Pass STW-1964 02/01/12 Ni-63 49.80 +/- 2.90 60.00 42.00 - 78.00 Pass STW-1964 02/01/12 Pu-238 0.58 +/- 0.06 0.63 0.44 - 0.82 Pass STW-1 964 02/01/12 Pu-239/40 1.30 +/- 0.15 1.34 0.94 -1.74 Pass STW-1 964 02/01/12 Sr-90 0.10 +/- 0.20 0.00 0.00 - 1.00 Pass STW-1 964 02/01/12 Tc-99 23.70 +/- 0.80 27.90 19.50 - 36.30 Pass STW-1 964 02/01/12 U-233/4 0.40 +/- 0.05 0.39 0.27 - 0.51 Pass STW-1964 02/01/12 U-238 2.67 +/- 0.13 2.76 1.93 - 3.59 Pass STW-1 964 02101/12 Zn-65 0.01 +/- 0.20 0.00 0.00 -1.00 Pass STW-5391 08/01/12 1-129 5.73 +/- 0.28 6.82 4.77 - 8.87 Pass STSO-5392 08/01/12 Am-241 129.30 +/- 12.70 111.00 78.00 - 144.00 Pass STSO-5392 08/01/12 Ni-63 376.20 +/- 20.60 406.00 284.00 - 528.00 Pass STSO-5392 08/01/12 Pu-238 118.70 +/- 9.30 105.80 74.10 - 137.50 Pass STSO-5392 08/01/12 Pu-239/40 140.70 +/- 9.90 134.00 94.00 -174.00 Pass STSO-5392 08/01/12 Sr-90 483.52 +/- 16.47 508.00 356.00 - 660.00 Pass STSO-5392 08/01/12 Tc-99 432.50 +/- 23.10 469.00 328.00 -610.00 Pass STSO-5394 08/01/12 Co-57 1528.00 +/- 4.10 1316.00 921.00 -1711.00 Pass STSO-5394 08/01/12 Co-60 592.00 +/- 3.20 531.00 372.00 - 690.00 Pass STSO-5394 08/01/12 Cs-134 933.60 +/- 5.82 939.00 657.00 - 1221.00 Pass STSO-5394 08/01/12 Cs-1 37 1319.80 +/- 5.50 1150.00 805.00 - 1495.00 Pass STSO-5394 08/01/12 K-40 737.30 +/- 17.70 632.00 442.00 - 822.00 Pass STSO-5394 08/01/12 Mn-54 1083.20 +/- 5.20 920.00 644.00 - 1196.00 Pass STSO-5394 08/01/12 U-233/4 55.80 +/- 4.20 60.30 42.20 - 78.40 Pass STSO-5394 08/01/12 U-238 231.20 +/- 8.60 263.00 184.00 - 342.00 Pass STSO-5394 08/01/12 Zn-65 696.10 +/- 7.00 606.00 424.00 - 788.00 Pass A6-2

TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP).

Concentration a Known Control Lab Code b Date Analysis Laboratory result Activity Limits c Acceptance S1VE-5395 g 08/01/12 Co-57 7.44 +/- 0.17 5.66 3.96 -7.36 Fail STVE-5395 08/01/12 Co-60 5.90 +/- 0.15 5.12 3.58 -6.66 Pass STVE-5395 08/01/12 Cs-1 34 7.40 +/- 0.31 6.51 4.56 -8.46 Pass STVE-5395 08/01/12 Cs-1 37 5.45 +/- 0.18 4.38 3.07 -5.69 Pass STVE-5395 08/01/12 Mn-54 4.06 +/- 0.21 3.27 2.29 -4.25 Pass STAP-5398 08/01/12 Gr. Alpha 0.41 +/- 0.05 0.97 0.29 - 1.65 Pass STAP-5398 08/01/12 Gr. Beta 2.11 +/- 0.09 1.92 0.96 -2.88 Pass STAP-5401 n 08/01/12 Am-241 0.12 +/- 0.02 0.08 0.05 -0.10 Fail STAP-5403 08/01/12 Co-57 1.96 +/- 0.05 1.91 1.34 -2.48 Pass STAP-5403 08/01/12 Co-60 1.76 +/- 0.07 1.73 1.21 -2.25 Pass STAP-5403 08/01/12 Cs-134 2.74 +/- 0.18 2.74 1.92 -3.56 Pass STAP-5403 08/01/12 Cs-137 0.00 +/- 0.03 0.00 -0.01 - 0.01 Pass STAP-5403 08/01/12 Mn-54 2.52 +/- 0.10 2.36 1.65 -3.07 Pass STAP-5403 08/01/12 Pu-238 0.050 +/- 0.015 0.063 0.044 - 0.081 Pass STAP-5403 08/01/12 Pu-239/40 0.001 +/- 0.004 0.00081 0.000 - 0.010 Pass STAP-5403' 08/01/12 U-233/4 0.009 +/- 0.011 0.014 0.010 - 0.018 Fail STAP-5403 08/01/12 U-238 0.08 +/- 0.02 0.10 0.070 - 0.130 Pass STAP-5403 08/01/12 Zn-65 0.01 +/- 0.06 0.00 -0.010 - 0.010 Pass STW-5445 08/01/12 Fe-55 79.80 +/- 4.10 89.30 62.50 - 116.10 Pass STW-5445 08/01/12 Ni-63 74.30 +/- 3.40 66.30 46.40 - 86.20 Pass STW-5445 08/01/12 U-233/4 0.46 +/- 0.05 0.45 0.32 -0.59 Pass STW-5445 08/01/12 U-238 3.14 +/- 0.14 3.33 2.33 -4.33 Pass STW-54451 08/01/12 Am-241 0.64 +/- 0.04 1.06 0.74 - 1.38 Fail a Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

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

MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". MAPEP does not provide control limits.

d Investigation was inconclusive, there was not enough sample for reanalysis. ERA results (A-7) for the same matrix were acceptable.

e No errors found in calculation or procedure, original analysis result; 0.010 +/- 0.010 Bq/filter.

f Reanalysis results were within limits, but low. ERA results (A-7) for the same matrix were acceptable.

The efficiency factor was recalculated for the second round of MAPEP testing. Original analysis results 55.8 +/- 12.6 BqlL.

9 Result of reanalysis; 6.74 +/- 0.15 Bq/sample. Gamma emitters for the vegetation matrix exhibited a high bias, only Co-57 exceeded acceptance limits. Recounted using a geometry more closely matched to the MAPEP sample size.

Result of reanalysis; 0.070 + 0.013 Bq/filter.

Result of reanalysis; 0.013 + 0.005 pCi/filter. A larger sample size was used to reduce the counting error.

J Result of reanalysis 1.07 +/- 0.06 pCi/L. The analyses of the MAPEP sample matrix resulted in recovery factors greater than 100%.

A correction was made using recovery based on analysis of blank samples. A new tracer solution is on order, future samples for MAPEP testing will include batch spike and blank samples.

A6-3

TABLE A-7. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA) a Concentration (pCi/L) b Lab Code b Date Analysis Laboratory ERA Control Result c Result d Limits Acceptance ERAP-1 393 03/19/12 Co-60 917.5 +/- 7.0 880.0 681.0 - 1100.0 Pass ERAP-1 393 03/19/12 Cs-i 34 586.6 +/- 7.4 656.0 417.0 - 814.0 Pass ERAP-1 393 03/19/12 Cs-1 37 1255.9 +/- 9.4 1130.0 849.0 - 1480.0 Pass ERAP-1393 03/19/12 Mn-54 < 3.4 0.0 Pass ERAP-1393 03/19/12 Zn-65 1085.2 +/- 18.0 897.0 642.0 - 1240.0 Pass ERAP-1394 03/19/12 Am-241 86.9 +/- 2.9 68.8 42.4 - 93.1 Pass ERAP-1394 03/19/12 Pu-238 70.2 +/- 3.6 63.2 43.3 -83.1 Pass ERAP-1 394 03/19/12 Pu-239/40 66.0 +/- 1.0 63.0 45.6 - 82.4 Pass ERAP-1394 03/19/12 Sr-90 112.5 +/- 15.4 89.6 43.8 - 134.0 Pass ERAP-1394 03/19/12 U-233/4 43.4 +/- 0.8 47.5 29.4 -71.6 Pass ERAP-1394 03/19/12 U-238 44.0 +/- 1.2 47.1 30.4 - 65.1 Pass ERAP-1394 03/19/12 Uranium 89.1 +/- 2.2 96.7 53.5 - 147.0 Pass ERAP-1396 03/19/12 Gr. Alpha 81.1 +/- 1.5 77.8 26.1 - 121.0 Pass ERAP-1396 03/19/12 Gr. Beta 68.4 +/- 0.7 52.5 33.2 - 76.5 Pass ERSO-1397 03/19/12 Ac-228 1303.4 +/- 89.3 1570.0 1010.0 - 2180.0 Pass ERSO-1 397 03/19/12 Am-241 856.0 +/- 123.7 938.0 549.0 - 1220.0 Pass ERSO-1397 03/19/12 Bi-212 1379.2 +/- 247.2 1550.0 413.0 -2280.0 Pass ERSO-1397 03/19/12 Bi-214 965.2 +/- 38.4 1100.0 665.0 - 1590.0 Pass ERSO-1397 03/19/12 Co-60 3693.6 +/- 32.1 3500.0 2370.0 -4820.0 Pass ERSO-1397 03/19/12 Cs-134 2257.3 +/- 45.4 2180.0 1420.0 -2620.0 Pass ERSO-1397 03/19/12 Cs-137 9444.5 +/- 58.4 8770.0 6720.0 -11300.0 Pass ERSO-1397 03/19/12 K-40 11277.0 +/- 275.1 11600.0 8470.0 - 15600.0 Pass ERSO-1397 03/19/12 Mn-54 < 21.0 0.0 Pass ERSO-1397 03/19/12 Pb-212 1208.4 +/- 26.3 1510.0 992.0 -2110.0 Pass ERSO-1397 03/19/12 Pb-214 1041.6 +/- 46.9 1110.0 647.0 - 1650.0 Pass ERSO-1397 03/19/12 Pu-238 921.0 +/- 112.6 984.0 592.0 - 1360.0 Pass ERSO-1397 03/19/12 Pu-239/40 1028.0 +/- 112.6 879.0 575.0 - 1210.0 Pass ERSO-1397 03/19/12 Sr-90 8128.0 +/- 329.0 8800.0 3360.0 - 13900.0 Pass ERSO-1397 03/19/12 Th-234 2711.3 +/- 253.6 2000.0 632.0 - 3760.0 Pass ERSO-1397 03/19/12 *U-233/4 1859.3 +/- 126.6 1960.0 1200.0 - 2510.0 Pass ERSO-1397 03/19/12 U-238 2003.3 +/- 130.3 2000.0 1240.0 - 2540.0 Pass ERSO-1397 03/19/12 Uranium 3939.5 +/- 283.8 4030.0 2190.0 - 5320.0 Pass ERSO-1397 03/19/12 Zn-65 4200.4 +/- 65.9 3650.0 2910.0 - 4850.0 Pass A7-1

TABLE A-7. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA) a Concentration (pCi/L) b Lab Code b Date Analysis Laboratory ERA Control Result C Result a Limits Acceptance ERVE-1400 03/19/12 Am-241 4194.8 +/- 199.5 4540.0 2780.0 - 6040.0 Pass ERVE-1400 03/19/12 Cm-244 1471.2 +/- 113.1 1590.0 779.0 - 2480.0 Pass ERVE-1400 03/19/12 Co-60 2347.8 +/- 47.9 2210.0 1520.0 - 3090.0 Pass ERVE-1400 03/19/12 Cs-134 2847.5 +/- 64.0 2920.0 1880.0 - 3790.0 Pass ERVE-1400 03/19/12 Cs-137 1503.5 +/- 52.5 1340.0 972.0 - 1860.0 Pass ERVE-1400 03/19/12 K-40 34105.7 +/- 745.3 28600.0 20700.0 - 40100.0 Pass ERVE-1400 03/19/12 Mn-54 < 26.8 0.0 Pass ERVE-1400 03/19/12 Pu-238 2509.0 +/- 213.6 2350.0 1400.0 - 3220.0 Pass ERVE-1400 03/19/12 Pu-239/40 2690.4 +/- 208.9 2570.0 1580.0 -3540.0 Pass ERVE-1400 03/19/12 Sr-90 7881.5 +/- 470.8 8520.0 4860.0 -11300.0 Pass ERVE- 1400 03/19/12 U-233/4 3149.6 +/- 165.2 3610.0 2370.0 - 4640.0 Pass ERVE-1400 03/19/12 U-238 3203.6 +/- 166.5 3580.0 2390.0 - 4550.0 Pass ERVE-1400 03/19/12 Uranium 6463.7 +/- 363.2 7350.0 4980.0 - 9150.0 Pass ERVE-1400 03/19/12 Zn-65 2701.9 +/- 105.5 2310.0 1670.0 - 3240.0 Pass ERW-1403 03/19/12 Am-241 119.9 +/-3.2 135.0 91.0 - 181.0 Pass ERW-1403 03/19/12 Fe-55 713.7 +/- 127.4 863.0 514.0 - 1170.0 Pass ERW-1403 03/19/12 Pu-238 131.9 +/- 6.4 135.0 99.9 - 168.0 Pass ERW-1403 03/19/12 Pu-239/40 108.9 +/- 10.2 112.0 86.9 - 141.0 Pass ERW-1403 03/19/12 U-233/4 93.1 +/- 7.9 105.0 78.9 - 135.0 Pass ERW-1403 03/19/12 U-238 96.9 +/- 5.5 104.0 79.3 - 128.0 Pass ERW-1403 03/19/12 Uranium 190.0 +/- 13.8 214.0 157.0 -277.0 Pass ERW-1405 03/19/12 Co-60 858.7 +/- 5.6 875.0 760.0 - 1020.0 Pass ERW-1405 03/19/12 Cs-134 560.4 +/- 4.4 609.0 447.0 - 700.0 Pass ERW-1405 03/19/12 Cs-137 1239.9 +/- 7.4 1250.0 1060.0 - 1500.0 Pass ERW-1405 03/19/12 Mn-54 <7.4 0.0 Pass ERW-1405 03/19/12 Sr-90 944.3 +/- 26.2 989.0 644.0 - 1310.0 Pass ERW-1405 03/19/12 Zn-65 786.9 +/- 20.6 749.0 624.0 - 945:0 Pass ERW-1406 03/19/12 Gr. Alpha 85.9 +/- 3.0 103.0 36.6 - 160.0 Pass ERW-1406 03/19/12 Gr. Beta 45.7 +/- 1.6 43.7 25.0 - 64.7 Pass ERW-1409 03/19/12 H-3 9045.0 +/- 284.0 9150.0 6130.0 - 13000.0 Pass 8 Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the Environmental Measurements Laboratory Quality Assessment Program (EML).

b Laboratory codes as follows: STW (water), STAP (air filter), STSO (soil), STVE (vegetation). Results are reported in units of pCi/L, except for air filters (pCi/Filter), vegetation and soil (pCi/kg).

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

d Results are presented as the known values, expected laboratory precision (1 sigma, 1 determination) and control limits as provided by ERA. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". Control limits are not provided.

A7-2

APPENDIX B DATA REPORTING CONVENTIONS B-1

Data Reporting Conventions 1.0. All activities, except gross alpha and gross beta, are decay corrected to collection time or the end of the collection period.

2.0. Single Measurements Each single measurement is reported as follows: x+/-s where: x = value of the measurement; s = 2cr counting uncertainty (corresponding to the 95% confidence level).

In cases where the activity is less than the lower limit of detection L, it is reported as: < L, where L = the lower limit of detection based on 4.66cr uncertainty for a background sample.

3.0. Duplicate analyses If duplicate analyses are reported, the convention is as follows.

3.1 Individual results: For two analysis results; x1 +/- s, and x 2 +/- s2 Reported result: x +/- s; where x = (1/2) (x1 + x2 ) and s = (1/2) 1+

3.2. Individual results: < L1 I <L2 Reported result: < L, where L = lower of L1 and L2 3.3. Individual results: x +/- s, < L Reported result: x +/- s if x > L; < L otherwise.

4.0. Computation of Averages and Standard Deviations 4.1 Averages and standard deviations listed in the tables are computed from all of the individual measurements over the period averaged; for example, an annual standard deviation would not be the average of quarterly standard deviations. The average x and standard deviation "s" of a set of n numbers x1, x22 .. xn are defined as follows:

x =j n1 X-x s= ni n-1_

4.2 Values below the highest lower limit of detection are not included in the average.

4.3 If all values in the averaging group are less than the highest LLD, the highest LLD is reported.

4.4 If all but one of the values are less than the highest LLD, the single value x and associated two sigma error is reported.

4.5 In rounding off, the following rules are followed:

4.5.1. If the number following those to be retained is less than 5, the number is dropped, and the retained numbers are kept unchanged. As an example, 11.443 is rounded off to 11.44.

4.5.2. If the number following those to be retained is equal to or greater than 5, the number is dropped and the last retained number is raised by 1. As an example, 11.445 is rounded off to 11.45.

B-2

APPENDIX C Maximum Permissible Concentrations of Radioactivity in Air and Water Above Background in Unrestricted Areas C-1

Table C-1. Maximum permissible concentrations of radioactivity in air and water above natural background in unrestricted areasa Air (pCi/m3) Water (pCi/L)

-3 Gross alpha 1 x.10 Strontium-89 8,000 Gross beta 1 Strontium-90 500 b

Iodine-1 31 2.8 x 10-1 Cesium-1 37 1,000 Barium-140 8,000 Iodine-131 1,000 Potassium-40 4,000 Gross alpha 2 Gross beta 10 6

Tritium 1 x 10 Taken from Table 2 of Appendix B to Code of Federal Regulations Title 10, Part 20, and appropriate footnotes.

Concentrations may be averaged over a period not greater than one year.

b Value adjusted by a factor of 700 to reduce the dose resulting from the air-grass-cow-milk-child pathway.

C A natural radionuclide.

C-2

APPENDIX D

SUMMARY

OF THE LAND USE CENSUS D-1

Appendix D Summary of the 2012 Land Use Census The Duane Arnold Energy Land Use Census for 2012 was completed during August and September of 2012. All milk animals, residences and gardens greater than 500 square feet were identified within three miles for each of the 16 meteorological sectors. If none were identified within the three mile range, additional surveys were performed out to a distance of five miles.

The Cedar River was surveyed by boat on August 3 1st of 2012 for water use downstream of the DAEC to Cedar Rapids. This survey identified no new usages of river water from previous surveys. Recreational fishing is the only identified food pathway use of Cedar River water between the DAEC and the City of Cedar Rapids eight miles down-river.

There were 140 vegetable gardens identified during the performance of the 2012 Census. This number is more than the number of gardens found in the 2011 survey by 26. The distance to the nearest vegetation receptor changed in two sectors.

" In the sector towards the northwest, a new garden was identified at 2120 meters. This is compares of a distance of 2160 meters in that sector in 2011.

" In the sector towards the southwest, a new garden was identified at 3320 meters. This is compares of a distance of 4380 meters in that sector in 2011.

There were no other changes to the locations of the nearest vegetable receptors.

There was one new cattle herd observed at 3710 meters towards the north. There were no observed changes in milk cow locations.

No new drinking water wells were identified within a two mile radius of the site.

There was one instance where there was a change in the location of the nearest resident in a sector.

0 In the sector towards the southwest, a previously occupied house has been vacant for more than a year. The residence was purchased by a sand mining company in 2010 for commercial use.

D-2

In August of 2012, a professional geologist employed by the firm Conestoga-Rovers

& Associates evaluated the new sand pit located to the SW of the site for its potential effect on site hydrology. The hydrogeologist observed that during dredging activities, some water is removed from the pit. This water returned to the pit following the sorting process and there is effectively no net addition or subtraction of water from the underlying aquifers.

He concluded that:

..current activities at Croell have no significant impact on groundwater flow conditions (e.g. groundwater flow rate and direction) at DAEC."

In accordance with the DAEC's Environmental Sampling Procedure ESP 4.4, "Land Use Census", no changes in land use were identified that would adversely affect the safe operation of the DAEC, or that would warrant an update of the DAEC Updated Final Safety Analysis Report (UFSAR). Examples of land use that would warrant an UFSAR update include new hazards near the DAEC such as new gas pipelines or new installations utilizing toxic gases.

NextEra Energy Resources, Duane Arnold has committed to compliance with NEI 07-07, "Nuclear Energy Institute's Industry Ground Water Protection Initiative".

Per NEI 07-07, the following information is presented:

No radioactive reactor by-product material was identified in samples collected by the DAEC's Radiological Environmental Monitoring Program (REMP) or the site Ground Water Protection Program (GWPP) above the threshold concentration levels for reporting.

D-3

APPENDIX E ANNUAL RADIATION DOSE ASSESSMENT E-1

Appendix E Annual Radiation Dose Assessment The annual offsite radiation dose to a member of the public was determined by assessment of environmental dosimetry results and by calculations based on monitored effluent releases.

Section A. Dose Contribution from Direct Radiation Direct radiation dose from the operation of the DAEC was reported by TLDs placed at locations in the surrounding environment as described in the Offsite Dose Assessment Manual (ODAM).

1. Pre-operational and 2012 TLD results were evaluated with a paired difference statistical test.

The evaluation concluded that there were no significant differences in the TLD populations for the 0.5 mile and 1 mile TLD populations.

2. As stated in Part 1 of this report, no plant effect was indicated by the TLDs when dose results were compared to the estimated average natural background for Middle America.

Section B. Estimated Offsite Dose from Effluent Releases

1. The contribution of dose to a member of the public most likely to be exposed from liquid and gaseous effluent releases was calculated using the Meteorological Information and Dose Assessment System (MIDAS) computer program in accordance with the ODAM. The calculation methods follow those prescribed by Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I".

2. Following calculation of offsite doses, the appropriateness of REMP sampling station types and locations was reviewed. The current sampling scheme was determined to be more than adequate for the identified receptors.

Results of the MIDAS dose calculations are displayed below.

1.) The hypothetical maximally exposed organ due to liquid effluents was the liver of a child with an estimated dose equivalent of 0.00000248 mrem.

2.) The whole body dose equivalent to the hypothetical maximally exposed individual due to liquid effluents was 0.00000248 mrem.

3.) The maximum dose to air at the site boundary from noble gases released was 0.00305 mrad from gamma radiation at 695 meters towards the North-East.

4.) The maximum dose to air at the site boundary from noble gases released was 0.00387 mrad beta radiation at 695 meters towards the North-East.

5.) The whole body dose equivalent to the hypothetical maximally exposed individual from noble gases was 0.00110 mrem, at 805 meters towards the West.

6.) The skin dose equivalent to the hypothetical maximally exposed individual from noble gases was 0.00260 mrem, at 805 meters towards the West.

E-2

7.) The hypothetical maximally exposed organ due to airborne iodines and particulates with half-lives greater than eight days (excluding carbon-14) was the thyroid of a child at 805 meters to the West, with an estimated dose equivalent of 0.00899 mrem.

8.) The hypothetical maximally exposed organ due to airborne carbon-14 was the bone of a child located 2414 meters to the North of the site. The dose was 0.056 mrem.

Conclusion No measurable dose due to the operation of the DAEC was detected by environmental TLDs in 2012. The calculated doses are below the regulatory limits stated in Appendix I to 10CFR50 and in 40CFRI90.

Estimated Maximum Offsite Individual Doses for 2012 Type Age Distance Direction Dose or Dose Equivalent Annual 10 CFR 50, 1 Group (meters) (mrem) Appendix I "Limit" Direct Radiation None (as measured by TLDs)

Liquid Releases Whole Body Dose Child S 0.00000248 mrem 3 mrem Organ Dose Child - S 0.00000248 mre m 10 mrem Liver Noble Gas Gamma Air Dose 695 NE 0.00305 mrad 10 mrad Beta Air Dose 695 NE 0.00387 mrad 20 mrad Whole Body All 805 W 0.00110 mrem 5 mrem Skin Child 805 W 0.00260 mrem 15 mrem Particulates & Iodines Organ Dose Child - 805 W 0.00899 mrem 15 mrem Thyroid Carbon 14 Organ Dose Child - 2414 N 0.056 mrem 15 mrem Bone

There is no Appendix I limit for direct radiation. It is listed here to demonstrate compliance with 40 CFR 190 limits of 25 mrem whole body and 75 mrem thyroid.

E-3

APPENDIX F ERRATA FROM PREVIOUS ANNUAL REPORTS F-1

Appendix F Errata From Previous Annual Reports Corrections to the Previous Annual Reports:

1. The opening sentence in Appendix D of the 2009 Annual Radiological Environmental Operation Report (AREOR) incorrectly described the reporting year as 2008 when it should have been 2009.

2. Section 3.3 of the 2011 AREOR described that only partial air sample volumes were collected at three locations on 5/12/11 however, only two of those three incidents were subsequently described in Part I, Table 5.6 and in Part II, Section 2.0. Those sections should have also described the partial sample at D-1 1, Toddville on 5/12/11.

3. In Attachment One of the 2011 Annual Radioactive Material Release Report, there were three instances where incorrect units of measure were reported for Ground Water Protection Program tritium sampling results. Sample numbers 2_2011-08-24_013 and 2_2011-05-24_009 listed units of pCi/liter when the correct units of measure were uCi/mi Sample number 2_2011-08-19_006 had no unit of measure listed when the units should have been pCi/liter.

F-2

IAI TI Environmental, Midwes Laoratory Inc.

700 andwehr phone Road. Northbrook, (847) 564-0700 IL 60062-2310

fox (847) 564-4517 DUANE ARNOLD ENERGY CENTER CEDAR RAPIDS, IOWA Docket No. 50-331 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)

ANNUAL REPORT - PART II DATA TABULATIONS AND ANALYSES January 1 to December 31, 2012 Prepared by ATI ENVIRONMENTAL, Inc.

Midwest Laboratory Project No. 8001 Reviewed and Approved O-S 02 ZU Br ia Gr b, M.S.

Lab ato Manager

TABLE OF CONTENTS Section Paae List of Tables ............................................................................................................... iii 1.0 INTRODUCTIO N .................................................................................................... iv 2.0 PROGRAM DEVIATIONS ......................................................................................... v 3.0 DATA TABLES ......................................................................................................... vi Appendices A Supplem ental Analyses ...................................................................................... A-1 ii

LIST OF TABLES No. Title 1 Airborne particulates and iodine, Location D-3, analyses for gross beta and iodine-131 .......... 1-1 2 Airborne particulates and iodine, Location D-5, analyses for gross beta and iodine-1 31 .......... 2-1 3 Airborne particulates and iodine, Location D-6, analyses for gross beta and iodine-1 31 .......... 3-1 4 Airborne particulates and iodine, Location D-7, analyses for gross beta and iodine-1 31 .......... 4-1 5 Airborne particulates and iodine, Location D-11, analyses for gross beta and iodine-1 31 ......... 5-1 6 Airborne particulates and iodine, Location D-13, analyses for gross beta and iodine-1 31 ......... 6-1 7 Airborne particulates and iodine, Location D-15, analyses for gross beta and iodine-1 31 ......... 7-1 8 Airborne particulates and iodine, Location D-16, analyses for gross beta and iodine-131 ......... 8-1 9 Airborne particulates and iodine, Location D-40, analyses for gross beta and iodine-131 ......... 9-1 10 Airborne particulate composite samples, analysis for gamma-emitting isotopes .................... 10-1 11 Ambient gamma radiation by thermoluminescent dosimeters (TLD), quarterly exposure ......... 11-1 12 Milk samples, analysis for iodine-131 and gamma emitting isotopes ................................... 12-1 13 Ground water, Area wells, analysis for gross beta and tritium ............................................ 13-1 14 Vegetation samples (broadleaf), analysis for iodine-131 and gamma-emitting isotopes ........... 14-1 15 Vegetation samples (hay and grain), analysis for gamma-emitting isotopes .......................... 15-1 16 Surface water samples, analysis for tritium and gamma-emitting isotopes ............................ 16-1 17 Surface water composites, analysis for strontium-89 and strontium-90 ................................ 17-1 18 Fish samples, analysis for gamma-em itting isotopes ...................................................... 18-1 19 River sediment samples, analysis for gamma-emitting isotopes ......................................... 19-1 In addition the following tables may be found in Appendix A.

A-1 Groundwater, Area wells, conditional analyses for gamma emitting isotopes .............................. A-2 iii

1.0 INTRODUCTION

The following constitutes a supplement to the Annual Report for the Radiological Environmental Monitoring Program conducted at the Duane Arnold Energy Center, Palo, Iowa in 2012. Results of completed analyses are presented in the attached tables.

For information regarding sampling locations, type and frequency of collection, and sample codes, please refer to Part I, Tables 5.3 - 5.5 and Figures 5.1 and 5.2.

All concentrations, except gross beta and airborne iodine, are decay corrected to the time of collection. Airborne 1-131 is decayed to the midpoint of the collection period.

The required values for lower limits of detection (LLD) for gamma emitting isotopes are established through the Offsite Dose Assessment Manual (ODAM). Naturally occurring radioisotopes, such as Be-7, K-40 and Ra daughters, are frequently detected, but may not be listed for every sample medium.

iv

2.0 PROGRAM DEVIATIONS Sample Collection Date Type Analysis Location(s) or Period Comments AP/AI Gross Beta / 1-131 D-13 08-09-12 Out of service due to through power line maintenance.

09-06-12 MI 1-131, Gamma D-108 06-05-12 Dairy out of business.

TLD Ambient Gamma D-36 1st Qtr. 2012 TLD missing in the field, TLD replaced.

TLD Ambient Gamma D-41 3rd Qtr. 2012 TLD missing in the field, TLD replaced.

TLD Ambient Gamma D-17 4th Qtr. 2012 TLD missing in the field, TLD replaced.

WW Gross Beta / H-3 D-53, D-54, D-55 4th Qtr. 2012 Samples were collected Jan. 9, 2013.

D-57, D-58, D-72 G Gamma D-58, D-72, D-96 2012 Vegetation samples not available.

In no instance did missed analyses affect minimum sampling requirements as specified in the ODAM.

V

3.0 DATA TABLES vi

DUANE ARNOLD Table 1. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-131 a.

Location: D-3 (Hiawatha)

Units: pCi/m 3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (M3) Gross Beta Collected (M3) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 288 0.025 +/- 0.004 07-05-12 315 0.041 +/- 0.004 01-11-12 253 0.032 +/- 0.004 07-12-12 273 0.031 +/- 0.004 01-19-12 330 0.031 +/- 0.003 07-19-12 274 0.041 +/- 0.005 01-26-12 292 0.030 +/- 0.004 07-26-12 276 0.036 +/- 0.004 02-02-12 285 0.023 +/- 0.003 08-02-12 283 0.027 +/- 0.004 02-09-12 282 0.024 +/- 0.003 08-09-12 283 0.024 +/- 0.004 02-15-12 248 0.008 t 0.003 08-16-12 280 0.019 +/- 0.004 02-22-12 280 0.021 +/- 0.003 08-24-12 326 0.037 +/- 0.004 b

03-01-12 331 < 0.003 08-31-12 278 0.050 +/- 0.005 03-08-12 283 0.020 +/- 0.003 09-06-12 249 0.032 +/- 0.004 03-15-12 284 0.018 +/- 0.003 09-13-12 276 0.040 +/- 0.004 03-22-12 288 0.015 +/- 0.003 09-20-12 284 0.034 +/- 0.004 03-28-12 244 0.015 +/- 0.004 09-27-12 281 0.023 +/- 0.003 1st Quarter Mean +/- s.d. 0.022 +/- 0.007 3rd Quarter Mean +/- s.d. 0.034 +/- 0.009 04-06-12 367 0.019 +/- 0.003 10-05-12 329 0.048 +/- 0.004 04-12-12 246 0.017 +/- 0.004 10-12-12 278 0.029 +/- 0.004 04-20-12 324 0.012 +/- 0.003 10-18-12 241 0.031 +/- 0.004 04-27-12 290 0.014 +/- 0.003 10-26-12 326 0.023 + 0.003 05-03-12 235 0.016 +/- 0.004 11-02-12 276 0.016 + 0.004 05-10-12 272 0.015 +/- 0.003 11-09-12 280 0.028 +/- 0.004 05-17-12 275 0.018 +/- 0.004 11-16-12 275 0.045 + 0.005 05-25-12 313 0.020 +/- 0.003 11-23-12 283 0.066 + 0.005 05-31-12 236 0.017 +/- 0.004 12-01-12 311 0.041 + 0.004 06-07-12 274 0.020 +/- 0.004 12-07-12 244 0.045 +/- 0.005 06-14-12 274 0.018 +/- 0.004 12-13-12 240 0.039 +/- 0.005 06-20-12 233 0.026 +/- 0.004 12-21-12 315 0.062 +/- 0.005 06-27-12 272 0.027 +/- 0.004 12-28-12 276 0.043 +/- 0.004 01-03-13 240 0.078 +/- 0.006 2nd Quarter Mean +/- s.d. 0.018 +/- 0.004 4th Quarter Mean +/- s.d. 0.042 +/- 0.017 Cumulative Average 0.029 a Iodine-131 concentrations are < 0.03 pCi/mi3 unless noted otherwise.

b Filter light; potential loss of vacuum.

1- 1

DUANE ARNOLD Table 2. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-131 a Location: D-5 (Palo)

Units: pCi/m 3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (M3) Gross Beta Collected (M3) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 281 0.028 +/- 0.004 07-05-12 312 0.037 +/- 0.004 01-11-12 246 0.037 +/- 0.004 07-12-12 275 0.026 +/- 0.004 01-19-12 320 0.030 +/- 0.003 07-19-12 283 0.029 +/- 0.004 01-26-12 283 0.028 +/- 0.004 07-26-12 265 0.039 +/- 0.005 02-02-12 282 0.022 +/- 0.003 08-02-12 267 0.027 +/- 0.004 02-09-12 279 0.025 +/- 0.004 08-09-12 266 0.019 +/- 0.004 02-15-12 244 0.012 +/- 0.003 08-16-12 284 0.027 +/- 0.004 02-22-12 279 0.024 +/- 0.004 08-24-12 321 0.035 +/- 0.004 03-01-12 327 0.032 +/- 0.003 08-31-12 271 0.041 +/- 0.004 03-08-12 284 0.027 +/- 0.004 09-06-12 228 0.024 +/- 0.004 03-15-12 283 0.021 +/- 0.003 09-13-12 261 0.017 +/- 0.003 03-22-12 287 0.019 +/- 0.003 09-20-12 270 0.024 +/- 0.004 03-28-12 245 0.014 +/- 0.004 09-27-12 260 0.027 +/- 0.004 1st Quarter Mean +/- s.d. 0.025 +/- 0.007 3rd Quarter Mean +/- s.d. 0.029 +/- 0.008 04-06-12 374 0.016 +/- 0.003 10-05-12 309 0.052 +/- 0.005 04-12-12 239 0.016 +/- 0.004 10-12-12 262 0.021 +/- 0.004 04-20-12 324 0.022 +/- 0.003 10-18-12 226 0.030 +/- 0.005 04-27-12 289 0.021 +/- 0.004 10-26-12 307 0.027 +/- 0.004 05-03-12 243 0.017 +/- 0.004 11-02-12 264 0.036 +/- 0.005 05-10-12 284 0.014 +/- 0.003 11-09-12 266 0.029 +/- 0.004 05-17-12 288 0.022 +/- 0.004 11-16-12 266 0.043 +/- 0.005 05-25-12 326 0.026 +/- 0.004 11-23-12 269 0.054 +/- 0.005 05-31-12 244 0.016 +/- 0.004 12-01-12 300 0.042 +/- 0.004 06-07-12 282 0.024 +/- 0.004 12-07-12 255 0.042 +/- 0.005 06-14-12 283 0.019 +/- 0.004 12-13-12 259 0.037 +/- 0.004 06-20-12 240 0.028 +/- 0.004 12-21-12 341 0.058 +/- 0.004 06-27-12 154 0.041 +/- 0.007 b 12-28-12 300 0.044 +/- 0.004 01-03-13 258 0.076 +/- 0.006 2nd Quarter Mean +/- s.d. 0.022 +/- 0.007 4th Quarter Mean +/- s.d. 0.042 +/- 0.014 Cumulative Average 0.030 a Iodine-131 concentrations are < 0.03 pCi/m 3 unless noted otherwise.

bLow volume due to storms in area.

2-1

DUANE ARNOLD Table 3. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-131 a Location: D-6 (Center Point)

Units: pCi/m 3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (Mi) Gross Beta Collected (M3) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 281 0.025 +/- 0.004 07-05-12 317 0.034 +/- 0.004 01-11-12 246 0.028 +/- 0.004 07-12-12 276 0.031 +/- 0.004 01-19-12 321 0.028 +/- 0.003 07-19-12 277 0.041 +/- 0.004 01-26-12 283 0.024 +/- 0.003 07-26-12 279 0.024 +/- 0.004 02-02-12 290 0.020 +/- 0.003 08-02-12 272 0.031 +/- 0.004 02-09-12 287 0.028 +/- 0.004 08-09-12 269 0.022 +/- 0.004 02-15-12 250 0.023 +/- 0.004 08-16-12 271 0.025 +/- 0.004 02-22-12 285 0.026 +/- 0.004 08-24-12 312 0.033 +/- 0.004 03-01-12 337 0.027 +/- 0.003 08-31-12 267 0.045 +/- 0.005 03-08-12 288 0.028 +/- 0.004 09-06-12 238 0.031 +/- 0.005 03-15-12 289 0.024 +/- 0.004 09-13-12 265 0.028 +/- 0.004 03-22-12 293 0.019 +/- 0.003 09-20-12 273 0.025 +/- 0.004 03-28-12 249 0.017 +/- 0.004 09-27-12 269 0.027 +/- 0.004 1st Quarter Mean +/- s.d. 0.024 +/- 0.004 3rd Quarter Mean +/- s.d. 0.030 +/- 0.007 04-06-12 376 0.015 +/- 0.003 10-05-12 316 0.049 +/- 0.004 04-12-12 249 0.016 +/- 0.004 10-12-12 267 0.026 +/- 0.004 04-20-12 330 0.022 +/- 0.003 10-18-12 227 0.034 +/- 0.005 04-27-12 295 0.022 +/- 0.004 10-26-12 313 0.024 +/- 0.004 05-03-12 234 0.017 +/- 0.004 11-02-12 269 0.023 +/- 0.004 05-10-12 255 0.014 +/- 0.004 11-09-12 277 0.029 +/- 0.004 05-17-12 279 0.021 +/- 0.004 11-16-12 267 0.035 +/- 0.004 05-25-12 316 0.024 +/- 0.004 11-23-12 277 0.060 +/- 0.005 05-31-12 239 0.016 +/- 0.004 12-01-12 305 0.041 +/- 0.004 06-07-12 277 0.019 +/- 0.004 12-07-12 230 0.051 +/- 0.005 06-14-12 277 0.017 +/- 0.004 12-13-12 235 0.035 +/- 0.005 06-20-12 235 0.026 +/- 0.004 12-21-12 305 0.053 +/- 0.005 06-27-12 277 0.018 +/- 0.004 12-28-12 271 0.038 +/- 0.004 01-03-13 234 0.072 +/- 0.006 2nd Quarter Mean +/- s.d. 0.019 +/- 0.004 4th Quarter Mean +/- s.d. 0.041 +/- 0.015 Cumulative Average 0.029 a Iodine-131 concentrations are < 0.03 pCi/m 3 unless noted otherwise.

3-1

DUANE ARNOLD Table 4. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-131 a Location: D-7 (Shellsburg)

Units: pCi/m 3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (mi) Gross Beta Collected (m 3) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 293 0.029 +/- 0.004 07-05-12 324 0.032 +/- 0.004 01-11-12 258 0.035 +/- 0.004 07-12-12 281 0.030 +/- 0.004 01-19-12 332 0.034 +/- 0.003 07-19-12 282 0.038 +/- 0.004 01-26-12 300 0.037 +/- 0.004 07-26-12 281 0.028 +/- 0.004 02-02-12 284 0.018 +/- 0.003 08-02-12 282 0.029 +/- 0.004 02-09-12 282 0.025 +/- 0.004 08-09-12 278 0.021 +/- 0.004 02-15-12 246 0.023 +/- 0.004 08-16-12 280 0.030 +/- 0.004 02-22-12 286 0.029 +/- 0.004 08-24-12 322 0.039 +/- 0.004 03-01-12 326 0.031 +/- 0.003 08-31-12 279 0.051 +/- 0.005 03-08-12 284 0.028 +/- 0.004 09-06-12 236 0.035 +/- 0.005 03-15-12 283 0.023 +/- 0.004 09-13-12 268 0.029 +/- 0.004 03-22-12 287 0.022 +/- 0.004 09-20-12 285 0.031 +/- 0.004 03-28-12 245 0.015 +/- 0.004 09-27-12 274 0.012 +/- 0.003 1st Quarter Mean +/- s.d. 0.027 +/- 0.007 3rd Quarter Mean +/- s.d. 0.031 +/- 0.009 04-06-12 373 0.019 +/- 0.003 10-05-12 326 0.028 +/- 0.004 04-12-12 239 0.014 +/- 0.004 10-12-12 276 0.024 +/- 0.004 04-20-12 324 0.021 +/- 0.003 10-18-12 238 0.025 +/- 0.004 04-27-12 288 0.025 +/- 0.004 10-26-12 326 0.029 +/- 0.004 05-03-12 241 0.018 +/- 0.004 11-02-12 281 0.027 +/- 0.004 05-10-12 281 0.014 +/- 0.003 11-09-12 283 0.027 +/- 0.004 05-17-12 285 0.024 +/- 0.004 11-16-12 284 0.049 +/- 0.005 05-25-12 323 0.022 +/- 0.003 11-23-12 286 0.061 +/- 0.005 05-31-12 244 0.017 +/- 0.004 12-01-12 320 0.043 +/- 0.004 06-07-12 281 0.019 +/- 0.004 12-07-12 240 0.057 +/- 0.006 06-14-12 283 0.018 +/- 0.004 12-13-12 245 0.033 +/- 0.004 06-20-12 240 0.026 +/- 0.004 12-21-12 321 0.048 +/- 0.004 06-27-12 283 0.019 +/- 0.004 12-28-12 283 0.044 +/- 0.004 01-03-13 243 0.083 +/- 0.006 2nd Quarter Mean +/- s.d. 0.020 +/- 0.004 4th Quarter Mean +/- s.d. 0.041 +/- 0.017 Cumulative Average 0.030 a Iodine-131 concentrations are < 0.03 pCi/m 3 unless noted otherwise.

4-1

DUANE ARNOLD Table 5. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-131a.

Location: D-1 1 (Toddville) 3 Units: pCi/m Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (M3) Gross Beta Collected (M3) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 270 0.025 + 0.004 07-05-12 314 0.039 +/- 0.004 01-11-12 226 0.040 +/- 0.005 07-12-12 273 0.026 +/- 0.004 01-19-12 278 0.040 +/- 0.004 07-19-12 274 0.042 +/- 0.005 01-26-12 261 0.040 +/- 0.004 07-26-12 276 0.028 +/- 0.004 b

02-02-12 260 0.009 +/- 0.003 08-02-12 274 0.027 +/- 0.004 02-09-12 289 0.025 +/- 0.003 08-09-12 285 0.014 +/- 0.004 02-15-12 254 0.022 +/- 0.004 08-16-12 284 0.029 +/- 0.004 02-22-12 295 0.023 +/- 0.003 08-24-12 328 0.029 +/- 0.004 03-01-12 341 0.027 +/- 0.003 08-31-12 283 0.050 +/- 0.005 03-08-12 292 0.026 +/- 0.004 09-06-12 250 0.031 +/- 0.004 03-15-12 292 0.020 +/- 0.003 09-13-12 279 0.031 +/- 0.004 03-22-12 297 0.016 +/- 0.003 09-20-12 287 0.023 +/- 0.004 03-28-12 251 0.016 +/- 0.004 09-27-12 283 0.024 +/- 0.003 1st Quarter Mean +/- s.d. 0.025 +/- 0.010 3rd Quarter Mean +/- s.d. 0.030 +/- 0.009 04-06-12 383 0.018 +/- 0.003 10-05-12 333 0.036 +/- 0.004 04-12-12 248 0.006 +/- 0.004 10-12-12 281 0.024 +/- 0.004 04-20-12 334 0.021 +/- 0.003 10-18-12 245 0.031 +/- 0.004 04-27-12 299 0.020 +/- 0.004 10-26-12 328 0.022 +/- 0.003 05-03-12 252 0.019 +/- 0.004 11-02-12 284 0.025 +/- 0.004 05-10-12 271 0.013 +/- 0.003 11-09-12 288 0.025 +/- 0.004 05-17-12 276 0.019 +/- 0.004 11-16-12 278 0.039 +/- 0.004 05-25-12 313 0.024 +/- 0.004 11-23-12 289 0.062 +/- 0.005 05-31-12 236 0.014 +/- 0.004 12-01-12 318 0.043 +/- 0.004 06-07-12 274 0.020 +/- 0.004 12-07-12 240 0.047 +/- 0.005 06-14-12 274 0.016 +/- 0.004 12-13-12 245 0.035 +/- 0.004 06-20-12 233 0.029 +/- 0.004 12-21-12 317 0.062 +/- 0.005 06-27-12 274 0.020 +/- 0.004 12-28-12 282 0.042 +/- 0.004 01-03-13 245 0.070 +/- 0.006 2nd Quarter Mean +/- s.d. 0.018 +/- 0.005 4th Quarter Mean +/- s.d. 0.040 +/- 0.015 Cumulative Average 0.029 3

a Iodine-131 concentrations are < 0.03 pCi/mi unless noted otherwise.

b Filter light.

5-1

DUANE ARNOLD Table 1. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-13al Location: D-13 (Alburnett)

Units: pCi/rr?

Collection: Continuous, weekly exchange.

Date Volume Date Volume 3 3 Collected (M ) Gross Beta Collected (M ) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 295 0.017 +/- 0.003 07-05-12 308 0.037 +/- 0.004 b

01-11-12 258 0.012 +/- 0.003 07-12-12 267 0.028 +/- 0.004 01-19-12 337 0.037 +/- 0.004 07-19-12 268 0.041 +/- 0.005 01-26-12 297 0.029 +/- 0.004 07-26-12 224 0.028 +/- 0.005 02-02-12 295 0.018 +/- 0.003 08-02-12 230 0.026 +/- 0.004 b

02-09-12 293 < 0.003 08-09-12 NDc 02-15-12 257 0.025 +/- 0.004 08-16-12 NDc 02-22-12 293 0.023 +/- 0.003 08-24-12 NDc b

03-01-12 321 0.011 +/- 0.002 08-31-12 NDc 03-08-12 275 0.024 +/- 0.004 09-06-12 ND Cd 03-15-12 275 0.023 +/- 0.004 09-13-12 274 0.024 +/- 0.004 03-22-12 279 0.012 +/- 0.003 09-20-12 270 0.017 +/- 0.003 03-28-12 237 0.020 +/- 0.004 09-27-12 279 0.019 +/- 0.003 1st Quarter Mean +/- s.d. 0.021 +/- 0.008 3rd Quarter Mean +/- s.d. 0.027 +/- 0.008 04-06-12 358 0.018 +/- 0.003 10-05-12 326 0.027 +/- 0.003 04-12-12 236 0.016 +/- 0.004 10-12-12 276 0.019 +/- 0.004 04-20-12 314 0.023 +/- 0.003 10-18-12 238 0.021 +/- 0.004 04-27-12 281 0.019 +/- 0.004 10-26-12 323 0.020 +/- 0.003 05-03-12 237 0.020 +/- 0.004 11-02-12 278 0.018 +/- 0.004 05-10-12 274 0.014 +/- 0.003 11-09-12 286 0.018 +/- 0.003 05-17-12 270 0.015 +/- 0.004 11-16-12 295 0.041 +/- 0.004 05-25-12 306 0.025 +/- 0.004 11-23-12 280 0.050 +/- 0.005 b

05-31-12 232 0.015 +/- 0.004 12-01-12 308 0.011 +/- 0.003 06-07-12 269 0.018 +/- 0.004 12-07-12 234 0.046 +/- 0.005 06-14-12 268 0.017 +/- 0.004 12-13-12 238 0.030 +/- 0.004 06-20-12 228 0.033 +/- 0.005 12-21-12 309 0.055 +/- 0.005 06-27-12 268 0.019 +/- 0.004 12-28-12 274 0.036 +/- 0.004 01-03-13 236 0.078 +/- 0.006 2nd Quarter Mean +/- s.d. 0.019 +/- 0.005 4th Quarter Mean +/- s.d. 0.034 +/- 0.019 Cumulative Average 0.025 a Iodine-1 31 concentrations are < 0.03 pCi/mt3 unless noted otherwise.

b Filter light.

c No data; see Table 2.0, Listing of Missed Samples.

d No valid sample, Power restored 9/6/12, approximately two hours run-time.

6-1

DUANE ARNOLD Table 7. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-131a.

Location: D-15 (On-site, north) 3 Units: pCiim Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (m3) Gross Beta Collected (m3) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 274 0.025 +/- 0.004 07-05-12 327 0.029 +/- 0.004 01-11-12 242 0.036 +/- 0.004 07-12-12 293 0.020 +/- 0.003 01-19-12 315 0.026 +/- 0.003 07-19-12 294 0.041 +/- 0.004 01-26-12 277 0.039 +/- 0.004 07-26-12 295 0.027 +/- 0.004 02-02-12 282 0.022 +/- 0.003 08-02-12 297 0.028 +/- 0.004 02-09-12 269 0.024 +/- 0.004 08-09-12 292 0.019 +/- 0.004 02-15-12 239 0.025 +/- 0.004 08-16-12 284 0.030 +/- 0.004 02-22-12 288 0.013 +/- 0.003 08-24-12 283 0.014 +/- 0.003 03-01-12 325 0.015 +/- 0.003 08-31-12 282 0.044 +/- 0.004 03-08-12 284 0.015 +/- 0.003 09-06-12 249 0.033 +/- 0.005 03-15-12 290 0.012 +/- 0.003 09-13-12 281 0.028 +/- 0.004 b

03-22-12 280 < 0.004 09-20-12 286 0.025 +/- 0.004 03-28-12 244 0.009 +/- 0.003 09-27-12 284 0.023 +/- 0.003 1st Quarter Mean +/- s.d. 0.022 +/- 0.009 3rd Quarter Mean +/- s.d. 0.028 +/- 0.008 04-06-12 371 0.011 +/- 0.002 10-05-12 333 0.043 +/- 0.004 b

04-12-12 242 < 0.006 10-12-12 281 0.022 +/- 0.004 04-20-12 325 0.017 +/- 0.003 10-18-12 244 0.035 +/- 0.005 04-27-12 288 0.017 +/- 0.004 10-26-12 331 0.026 +/- 0.003 05-03-12 243 0.011 +/- 0.004 11-02-12 283 0.020 +/- 0.004 05-10-12 285 0.009 +/- 0.003 11-09-12 202 0.023 +/- 0.005 05-17-12 296 0.017 +/-0.003 11-16-12 281 0.042 +/- 0.004 05-25-12 335 0.018 +/- 0.003 11-23-12 295 0.045 +/- 0.004 05-31-12 255 0.019 +/- 0.004 12-01-12 330 0.039 +/- 0.004 06-07-12 294 0.017 +/- 0.003 12-07-12 259 0.052 +/- 0.005 06-14-12 291 0.015 +/- 0.003 12-13-12 241 0.033 +/- 0.004 06-20-12 253 0.024 +/- 0.004 12-21-12 331 0.058 +/- 0.004 06-27-12 161 0.036 +/- 0.006 12-28-12 291 0.043 +/- 0.004 01-03-13 250 0.067 +/- 0.005 2nd Quarter Mean +/- s.d. 0.018 +/- 0.007 4th Quarter Mean +/- s.d. 0.039 +/- 0.014 Cumulative Average 0.027 a lodine-131 concentrations are < 0.03 pCi/mr3 unless noted otherwise.

b Filter light.

c Low volume due to storms in area; GFI reset.

d Short run, GFI reset.

7-1

DUANE ARNOLD Table 8. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-131" Location: D-16 (On-site)

Units: pCi/m 3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (m3) Gross Beta Collected (M3) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 291 0.032 +/- 0.004 07-05-12 307 0.034 +/- 0.004 01-11-12 256 0.040 +/- 0.004 07-12-12 267 0.023 t 0.004 01-19-12 334 0.029 +/- 0.003 07-19-12 268 0.040 +/- 0.005 01-26-12 294 0.038 +/- 0.004 07-26-12 269 0.028 +/- 0.004 02-02-12 301 0.020 +/- 0.003 08-02-12 271 0.026 +/- 0.004 02-09-12 282 0.026 +/- 0.004 08-09-12 283 0.018 +/- 0.004 02-15-12 251 0.020 +/- 0.004 08-16-12 285 0.024 +/- 0.004 02-22-12 293 0.028 +/- 0.004 08-24-12 329 0.032 +/- 0.004 03-01-12 330 0.030 +/- 0.003 08-31-12 283 0.044 t 0.004 03-08-12 290 0.021 +/- 0.003 09-06-12 251 0.024 +/- 0.004 03-15-12 297 0.018 +/- 0.003 09-13-12 281 0.029 +/- 0.004 03-22-12 284 0.022 +/- 0.004 09-20-12 287 0.027 +/- 0.004 03-28-12 249 0.017 +/- 0.004 09-27-12 284 0.023 +/- 0.003 1st Quarter Mean +/- s.d. 0.026 +/- 0.007 3rd Quarter Mean +/- s.d. 0.029 +/- 0.007 04-06-12 379 0.016 +/- 0.003 10-05-12 332 0.039 +/- 0.004 04-12-12 239 0.011 +/- 0.004 10-12-12 281 0.025 +/- 0.004 04-20-12 331 0.020 +/- 0.003 10-18-12 244 0.030 +/- 0.004 04-27-12 294 0.017 +/- 0.004 10-26-12 330 0.024 +/- 0.003 05-03-12 247 0.014 +/- 0.004 11-02-12 283 0.022 +/- 0.004 05-10-12 268 0.014 +/- 0.003 11-09-12 272 0.025 +/- 0.004 05-17-12 270 0.016 +/- 0.004 11-16-12 272 0.044 +/- 0.005 05-25-12 306 0.024 +/- 0.004 11-23-12 274 0.066 +/- 0.005 05-31-12 233 0.008 +/- 0.004 12-01-12 308 0.046 +/- 0.004 06-07-12 268 0.022 +/- 0.004 12-07-12 241 0.048 +/- 0.005 b

06-14-12 266 0.006 +/- 0.003 12-13-12 224 0.035 +/- 0.005 b

06-20-12 231 0.009 +/- 0.004 12-21-12 308 0.058 +/- 0.005 06-27-12 269 0.022 +/- 0.004 12-28-12 271 0.046 +/- 0.005 01-03-13 232 0.061 +/- 0.006 2nd Quarter Mean +/- s.d. 0.015 +/- 0.006 4th Quarter Mean +/- s.d. 0.041 +/- 0.015 Cumulative Average 0.028 3

a Iodine-131 concentrations are < 0.03 pCi/m unless noted otherwise.

b Filter light.

8-1

DUANE ARNOLD Table 9. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-131 a Location: D-40 Units: pCi/m 3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (m 3) Gross Beta Collected (M 3) Gross Beta Required LLD 0.010 Required LLD 0.010 01-05-12 280 0.033 +/- 0.004 07-05-12 310 0.035 +/- 0.004 01-11-12 246 0.036 +/- 0.004 07-12-12 264 0.027 +/- 0.004 01-19-12 323 0.038 +/- 0.004 07-19-12 272 0.037 +/- 0.004 01-26-12 282 0.021 +/- 0.003 07-26-12 269 0.030 +/- 0.004 02-02-12 282 0.023 +/- 0.003 08-02-12 275 0.026 +/- 0.004 02-09-12 278 0.027 +/- 0.004 08-09-12 273 0.015 +/- 0.004 02-15-12 246 0.027 +/- 0.004 08-16-12 264 0.023 +/- 0.004 02-22-12 271 0.029 +/- 0.004 08-24-12 317 0.027 +/- 0.003 03-01-12 325 0.032 +/- 0.003 08-31-12 267 0.040 +/- 0.004 03-08-12 282 0.030 +/- 0.004 09-06-12 239 0.025 +/- 0.004 03-15-12 278 0.019 +/- 0.003 09-13-12 266 0.027 +/- 0.004 03-22-12 287 0.017 +/- 0.003 09-20-12 271 0.022 +/- 0.004 03-28-12 242 0.014 +/- 0.004 09-27-12 269 0.020 +/- 0.003 1st Quarter Mean +/- s.d. 0.027 +/- 0.007 3rd Quarter Mean +/- s.d. 0.027 +/- 0.007 04-06-12 389 0.011 +/- 0.002 10-05-12 316 0.039 +/- 0.004 b

04-12-12 248 < 0.005 10-12-12 267 0.024 +/- 0.004 04-20-12 336 0.020 +/- 0.003 10-18-12 233 0.032 +/- 0.005 04-27-12 300 0.018 +/- 0.004 10-26-12 313 0.026 +/- 0.004 05-03-12 254 0.020 +/- 0.004 11-02-12 270 0.018 +/- 0.004 05-10-12 295 0.015 +/- 0.003 11-09-12 268 0.022 +/- 0.004 05-17-12 293 0.017 +/- 0.003 11-16-12 274 0.049 +/- 0.005 05-25-12 344 0.023 +/- 0.003 11-23-12 278 0.062 +/- 0.005 05-31-12 256 0.018 +/- 0.004 12-01-12 304 0.037 +/- 0.004 06-07-12 297 0.019 +/- 0.003 12-07-12 232 0.049 +/- 0.005 06-14-12 296 0.020 +/- 0.004 12-13-12 235 0.032 +/- 0.004 06-20-12 251 0.027 +/- 0.004 12-21-12 304 0.058 +/- 0.005 06-27-12 298 0.022 +/- 0.004 12-28-12 271 0.040 +/- 0.004 01-03-13 258 0.079 +/- 0.006 2nd Quarter Mean +/- s.d. 0.019 +/- 0.004 4th Quarter Mean +/- s.d. 0.040 +/- 0.017 Cumulative Average 0.029 3

a Iodine-131 concentrations are < 0.03 pCi/m unless noted otherwise.

b Filter white; no particulate matter collected.

9-1

DAEC Table 10. Airborne particulates, analyses for gamma-emitting isotopes.

3 Collection: Quarterly Composite Units: pCi/m Location D-3 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP- 2163 DAP- 4402 DAP- 6477 DAP- 8510 Volume (M3) 3688 3611 3678 3915 Be-7 0.037 +/- 0.013 0.079 +/- 0.015 0.092 + 0.013 0.052 +/- 0.016 Mn-54 < 0.0008 < 0.0006 0.0007 < 0.0004 Fe-59 < 0.0014 < 0.0027 0.0007 < 0.0015 Co-58 < 0.0006 < 0.0008 0.0008 < 0.0005 Co-60 < 0.0003 < 0.0008 0.0003 < 0.0008 Zn-65 < 0.0010 < 0.0012 0.0009 < 0.0007 Nb-95 < 0.0009 < 0.0013 0.0006 < 0.0007 Zr-95 < 0.0014 < 0.0017 0.0013 < 0.0009 Ru-103 < 0.0009 < 0.0012 0.0008 < 0.0008 Ru-106 < 0.0070 < 0.0077 0.0056 < 0.0038 Cs-134 < 0.0006 < 0.0008 0.0005 < 0.0006 Cs-I 37 < 0.0008 < 0.0010 0.0006 < 0.0006 Ce-141 < 0.0016 < 0.0022 0.0010 < 0.0013 Ce-144 < 0.0032 < 0.0062 0.0034 < 0.0033 Location D-5 Lab Code DAP- 2164 DAP- 4403 DAP- 6478 DAP- 8511 Volume (M3 ) 3641 3569 3564 3882 Be-7 0.060 +/- 0.016 0.093 +/- 0.018 0.078 +/- 0.013 0.052 +/- 0.015 Mn-54 < 0.0008 < 0.0007 < 0.0013 0.0003 Fe-59 < 0.0019 < 0.0010 < 0.0018 0.0011 Co-58 < 0.0008 < 0.0006 < 0.0006 0.0006 Co-60 < 0.0004 < 0.0006 < 0.0016 0.0007 Zn-65 < 0.0007 < 0.0008 < 0.0014 0.0009 Nb-95 < 0.0007 < 0.0008 < 0.0009 0.0008 Zr-95 < 0.0014 < 0.0008 < 0.0020 0.0008 Ru-103 < 0.0010 < 0.0009 < 0.0016 0.0007 Ru-106 < 0.0067 < 0.0078 < 0.0047 0.0044 Cs-134 < 0.0004 < 0.0006 < 0.0008 0.0005 Cs-137 < 0.0007 < 0.0007 < 0.0011 0.0004 Ce-141 < 0.0016 < 0.0019 < 0.0020 0.0017 Ce-144 < 0.0053 < 0.0032 < 0.0047 0.0044 Location D-6 D-6 Lab Code DAP- 2165 DAP- 4404 DAP- 6479 DAP- 8512 Volume (m3) 3698 3637 3586 3793 Be-7 0.047 +/- 0.014 0.088 +/- 0.017 0.091 +/- 0.017 0.064 +/- 0.013 Mn-54 0.0007 < 0.0010 < 0.0010 < 0.0004 Fe-59 0.0025 < 0.0035 < 0.0021 < 0.0014 Co-58 0.0009 < 0.0003 < 0.0007 < 0.0005 Co-60 0.0005 < 0.0005 < 0.0007 < 0.0009 Zn-65 0.0016 < 0.0008 < 0.0012 < 0.0013 Nb-95 0.0009 < 0.0016 < 0.0010 < 0.0007 Zr-95 0.0010 < 0.0017 < 0.0016 < 0.0007 Ru-103 0.0011 < 0.0012 < 0.0010 < 0.0011 Ru-106 0.0095 < 0.0057 < 0.0085 < 0.0060 Cs-1 34 0.0011 < 0.0007 < 0.0009 < 0.0004 Cs-137 0.0010 < 0.0007 < 0.0009 < 0.0004 Ce-141 0.0019 < 0.0013 < 0.0011 < 0.0016 Ce- 144 0.0040 < 0.0045 < 0.0047 < 0.0036 10-1

DAEC Table 10. Airborne particulates, analyses for gamma-emitting isotopes.

3 Collection: Quarterly Composite Units: pCi/m Location D-7 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP- 2166 DAP- 4405 DAP- 6480 DAP- 8513 Volume (M3) 3706 3684 3670 3952 Be-7 0.061 +/- 0.020 0.11 +/- 0.020 0.082 +/- 0.016 0.051 + 0.016 Mn-54 < 0.0005 < 0.0009 < 0.0007 0.0003 Fe-59 < 0.0019 < 0.0017 < 0.0023 0.0011 Co-58 < 0.0007 < 0.0010 < 0.0008 0.0007 Co-60 < 0.0004 < 0.0005 < 0.0009 0.0008 Zn-65 < 0.0007 < 0.0009 < 0.0012 0.0007 Nb-95 < 0.0011 < 0.0013 < 0.0018 0.0008 Zr-95 < 0.0011 < 0.0016 < 0.0017 0.0009 Ru-103 < 0.0012 < 0.0011 < 0.0011 0.0010 Ru-106 < 0.0083 < 0.0073 < 0.0059 0.0032 Cs-1 34 < 0.0004 < 0.0007 < 0.0008 0.0004 Cs-137 < 0.0007 < 0.0009 < 0.0010 0.0005 Ce-141 < 0.0015 < 0.0015 < 0.0020 0.0019 Ce- 144 < 0.0059 < 0.0059 < 0.0039 0.0052 Location D-11 Lab Code DAP- 2168 DAP- 4406 DAP- 6481 DAP- 8514 Volume (m3) 3606 3665 3691 3972 Be-7 0.076 +/- 0.017 0.080 +/- 0.019 0.088 +/- 0.016 0.040 +/- 0.012 Mn-54 0.0009 < 0.0007 < 0.0008 0.0010 Fe-59 0.0025 < 0.0010 < 0.0019 0.0021 Co-58 0.0006 < 0.0007 < 0.0014 0.0007 Co-60 0.0007 < 0.0005 < 0.0009 0.0007 Zn-65 0.0021 < 0.0007 < 0.0008 0.0020 Nb-95 0.0009 < 0.0006 < 0.0013 0.0012 Zr-95 0.0015 < 0.0019 < 0.0012 0.0013 Ru-103 0.0014 < 0.0009 < 0.0011 0.0015 Ru-106 0.0073 < 0.0070 < 0.0089 0.0092 Cs-134 0.0008 < 0.0007 < 0.0009 0.0009 Cs-137 0.0012 < 0.0008 < 0.0004 0.0010 Ce-141 0.0014 < 0.0019 < 0.0019 0.0018 Ce-144 0.0053 < 0.0026 < 0.0045 0.0057 Location D-13 Lab Code DAP- 2169 DAP- 4407 DAP- 6482 DAP- 8515 Volume (m3) 3701 3541 2120 3901 Be-7 0.053 +/- 0.012 0.10 +/- 0.020 0.089 +/- 0.024 0.045 +/- 0.014 Mn-54 'C 0.0006 < 0.0006 < 0.0008 < 0.0006 Fe-59 'C 0.0010 < 0.0010 < 0.0015 < 0.0023 Co-58 'C 0.0004 < 0.0006 < 0.0011 < 0.0008 Co-60 'C 0.0004 < 0.0005 < 0.0020 < 0.0007 Zn-65 'C 0.0009 < 0.0008 < 0.0024 < 0.0010 Nb-95 'C 0.0006 < 0.0011 < 0.0016 < 0.0010 Zr-95 'C 0.0011 < 0.0015 < 0.0015 < 0.0019 Ru-103 'C 0.0011 < 0.0007 < 0.0015 < 0.0015 Ru-106 'C 0.0062 < 0.0044 < 0.0048 < 0.0088 Cs-1 34 'C 0.0005 < 0.0004 < 0.0015 < 0.0007 Cs-137 'C 0.0006 < 0.0005 < 0.0007 < 0.0009 Ce-141 'C 0.0013 < 0.0026 < 0.0015 < 0.0019 Ce-144 'C 0.0024 < 0.0041 < 0.0056 < 0.0051 10-2

DAEC Table 10. Airborne particulates, analyses for gamma-emitting isotopes.

Collection: Quarterly Composite Units: pCi/m3 Location D-15S D-15 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP- 2170 DAP- 4408 DAP- 6484 DAP- 8516 Volume (m3) 3606 3638 3747 3949 Be-7 0.042 +/- 0.015 0.089 +/- 0.016 0.096 +/- 0.019 0.053 +/- 0.013 Mn-54 <C 0.0007 < 0.0006 < 0.0009 0.0005 Fe-59 0.0017 'C

< 0.0018 < 0.0013 0.0005

<C Co-58 0.0007 < 0.0009 < 0.0009 0.0004

'C 0.0004 'C Co-60 < 0.0004 < 0.0009 0.0005

<C Zn-65 'C 0.0007 < 0.0015 < 0.0007 0.0004 Nb-95 'C 0.0013 <C

< 0.0012 < 0.0016 0.0010 Zr-95 'C 0.0014 <C

< 0.0021 < 0.0020 0.0010 Ru-103 'C 0.0008 < 0.0012 'C

< 0.0013 0.0011

<C Ru-106 'C 0.0064 < 0.0073 < 0.0079 0.0065 Cs-i 34 'C 0.0005 'C

< 0.0007 < 0.0006 0.0005 Cs- 137 'C 0.0006 'C

< 0.0009 < 0.0010 0.0006 Ce-141 'C 0.0011 'C

< 0.0018 < 0.0019 0.0012

< 0.0041 <C Ce-144 'C 0.0050 < 0.0056 0.0044 Location D-16 Lab Code DAP- 2171 DAP- 4409 DAP- 6485 DAP- 8517 Volume (m 3) 3753 3599 3665 3873 Be-7 0.065 +/- 0.015 0.074 +/- 0.016 0.080 +/- 0.017 0.051 +/- 0.015

'C Mn-54 'C 0.0006 0.0006 < 0.0009 < 0.0004 Fe-59 'C 0.0014 'C 0.0024 < 0.0013 < 0.0016

'C 0.0010 'C Co-58 0.0009 < 0.0011 < 0.0004

'C 0.0006 'C < 0.0010 Co-60 0.0004 < 0.0010 Zn-65 'C 0.0008 'C 0.0008 < 0.0012 < 0.0008 Nb-95 'C 0.0010 'C 0.0019 < 0.0006 < 0.0013

'C Zr-95 'C 0.0010 0.0010 < 0.0010 < 0.0012 Ru-103 'C < 0.0007 0.0011 0.0009 < 0.0013

'C Ru-106 'C 0.0059 0.0091 < 0.0090 < 0.0033 Cs-1 34 'C 0.0008 'C 0.0008 < 0.0009 < 0.0005

'C Cs-137 'C 0.0006 0.0008 < 0.0006 < 0.0004

'C Ce-141 'C 0.0014 0.0013 < 0.0023 < 0.0014

'C Ce-144 'C 0.0047 0.0047 < 0.0054 < 0.0037 Location D-40 Lab Code DAP- 2172 DAP- 4410 DAP- 6486 DAP- 8519 Volume (m3) 3621 3857 3555 3823 Be-7 0.056 +/- 0.012 0.088 +/- 0.017 0.092 +/- 0.017 0.048 +/- 0.010 Mn-54 < 0.0005 'C 0.0009 'C 0.0010 < 0.0005 Fe-59 < 0.0013 'C 0.0019 'C 0.0018 < 0.0015 Co-58 < 0.0008 'C 0.0008 'C 0.0006 < 0.0005 Co-60 < 0.0006 'C 0.0007 'C 0.0007 < 0.0004 Zn-65 < 0.0006 'C 0.0007 'C 0.0008 < 0.0007 Nb-95 < 0.0012 'C 0.0012 'C 0.0016 < 0.0009 Zr-95 < 0.0008 'C 0.0021 'C 0.0023 < 0.0008 Ru-103 < 0.0013 'C 0.0007 'C 0.0008 < 0.0006 Ru-106 < 0.0065 'C 0.0069 'C 0.0071 < 0.0021 Cs-1 34 < 0.0005 'C 0.0009 'C 0.0009 < 0.0007 Cs-137 < 0.0007 'C 0.0005 'C 0.0012 < 0.0003 Ce-141 < 0.0016 'C 0.0023 'C 0.0020 < 0.0009 Ce-144 < 0.0032 'C 0.0048 'C 0.0056 < 0.0023 10-3

DUANE ARNOLD Table 11. Ambient gamma radiation as measured by thermoluminescent dosimeters (TLD).

. Quarterly collection. Units: mR/91 days Control Locations 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

D-1 17.5 +/-0.7 12.2 +/- 1.5 15.6 +/- 1.0 15.5 +/- 1.8 D-2 16.4 +/- 0.9 10.3 +/- 0.8 14.0 +/- 1.0 14.4 +/- 1.7 D-3 18.0 +/- 1.1 13.8 +/- 0.8 15.8 +/- 1.2 18.5 +/- 1.0 D-5 19.5 +/- 1.0 17.6 +/- 0.7 18.8 +/- 1.5 21.8 +/- 0.9 D-6 18.4 + 0.7 16.4 +/- 0.7 16.8 +/- 1.3 19.9 +/- 1.2 D-7 18.1 +/-0.9 15.6 +/- 0.9 17.0 +/- 1.2 19.8 +/- 1.0 D-8 21.5 +/-0.8 20.6 +/- 1.2 20.9 +/- 0.9 24.6 +/- 1.4 D-10 20.3 +/- 0.8 14.8 +/- 0.8 18.7 +/- 1.1 18.0 +/- 1.3 D-11 16.9 +/- 0.7 15.1 +/- 1.5 15.6 +/- 0.9 19.2 +/- 2.0 D-13 20.0 +/- 0.6 16.8 +/- 1.3 17.2 +/- 1.1 19.6 +/- 1.4 Mean +/- s.d. 18.7 +/- 1.6 15.3 +/- 2.9 17.0 +/- 2.0 19.1 +/-2.9 Within 0.5 mi. of Stack D-15 18.4 +/- 1.2 14.9 +/- 0.8 17.5 +/- 1.1 18.5 +/- 1.0 D-16 19.2 +/- 0.9 14.4 +/- 1.3 17.5 +/- 1.0 16.9 +/- 1.9 D-17 21.5 +/- 0.9 17.1 +/- 1.1 20.4 +/- 1.1 NDa D-18 18.6 +/- 1.2 13.7 +/- 0.9 16.4 +/- 1.7 15.4 +/- 0.9 D-19 17.6 +/- 1.0 13.3 +/- 0.8 15.5 +/- 1.1 14.9 +/- 0.9 D-20 20.3 +/- 0.9 16.7 +/- 1.0 16.9 +/- 1.1 18.6 +/- 1.9 D-21 21.1 +/- 1.0 15.2 +/- 0.8 18.4 +/- 1.2 16.4 +/- 1.0 D-22 20.7 +/- 0.7 16.6 +/- 0.9 18.1 +/- 1.2 17.5 +/- 0.9 D-23 18.4 +/- 1.2 14.7 +/- 0.8 15.2 +/- 1.3 16.6 +/- 0.9 D-28 22.6 +/- 1.2 20.6 +/- 0.8 21.5 +/- 1.5 22.8 +/- 0.9 D-29 24.2 +/- 0.7 21.2 +/- 1.1 22.8 +/- 1.5 23.8 +/- 1.4 D-30 22.8 +/- 1.0 19.8 +/- 1.1 22.2 +/- 1.3 21.5 +/- 2.3 D-31 23.2 +/- 1.2 21.2 +/- 1.3 21.5 +/- 1.7 23.0 +/- 1.5 D-32 24.2 +/- 0.7 20.6 +/- 1.0 23.6 +/- 0.9 22.2 +/- 1.0 D-82 18.4 +/- 0.8 13.9 +/- 1.0 18.6 +/- 1.1 17.8 +/- 1.0 D-83 18.4 +/- 0.7 15.6 +/- 0.8 18.9 +/- 1.2 19.8 +/- 1.1 D-84 18.7 +/- 1.1 15.7 +/- 0.9 19.1 +/- 1.7 19.4 +/- 1.2 D-85 20.0 +/- 0.7 18.0 +/- 1.0 21.5 +/- 0.9 20.2 +/- 1.2 D-86 20.2 +/- 1.6 17.8 +/- 1.2 21.7 +/- 2.0 21.2 +/- 1.6 D-91 18.9 +/- 0.8 17.4 +/- 1.3 19.9 +/- 1.2 20.3 +/- 1.8 Mean +/- s.d. 20.4 +/- 2.1 16.9 +/- 2.6 19.4 +/- 2.5 19.3 +/- 2.7 a'ND = No data; TLO missing in field.

11-1

DUANE ARNOLD Table 11. Ambient gamma radiation as measured by thermoluminescent dosimeters (TLD).

Quarterly collection. Units: mR/91 days Within 1.0 mi. of 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Stack D-43 17.4 +/- 0.9 16.6 +/- 1.3 17.8 +/- 1.3 18.8 +/- 1.4 D-44 21.3 +/- 0.9 20.3 +/- 0.8 22.5 +/- 1.1 22.2 +/- 0.8 D-45 17.9 +/- 0.8 15.9 +/- 1.1 18.8 +/- 1.3 17.6 +/- 1.2 D-46 21.2 +/- 1.0 20.3 +/- 1.0 23.7 +/- 1.2 21.8 +/- 1.1 D-47 21.2 +/- 0.9 19.3 +/- 0.7 22.5 +/- 1.0 20.9 +/- 1.0 D-48 20.8 +/- 0.6 20.5 +/- 0.8 23.7 +/- 0.9 22.0 +/- 0.9 Mean +/- s.d. 20.0 +/- 1.8 18.8 +/- 2.0 21.5 +/- 2.5 20.5 +/- 1.9 Within 3.0 mi. of Stack D-33 17.8 +/- 0.7 13.8 +/- 0.7 16.1 +/- 0.9 16.6 +/- 1.0 D-34 17.3 +/-0.8 13.2 +/- 1.2 16.1 +/- 1.0 16.3 +/- 1.1 D-35 17.7 +/- 0.7 13.1 +/- 0.7 16.0 +/- 0.8 15.6 +/- 1.1 D-36 NDa 14.7 +/- 1.0 19.0 +/- 1.3 16.8 +/- 1.0 D-37 20.4 +/- 0.9 14.9 +/- 0.8 19.2 +/- 1.2 15.6 +/- 0.9 D-38 19.5 +/- 1.0 17.2 +/- 1.5 19.0 +/- 1.2 18.8 +/- 1.6 D-39 19.6 +/- 0.8 16.7 +/- 0.7 18.7 +/- 0.9 19.2 +/- 1.8 D-40 18.1 +/- 0.8 15.5 +/- 0.9 15.9 +/- 1.1 17.8 +/- 1.0 D-41 18.2 +/- 0.9 15.6 +/- 0.9 NDa 17.4 +/- 1.0 D-42 18.2 +/- 0.8 15.5 +/- 1.4 15.7 +/- 1.0 18.1 +/- 1.4 Mean +/- s.d. 18.5 +/- 1.0 15.0 +/- 1.4 17.3 +/- 1.6 17.2 +/- 1.3 ISFSI Fenceline D-161 52.1 +/- 1.0 52.3 +/- 3.8 51.2 +/- 2.4 46.8 +/- 3.9 D-162 19.0 +/- 0.8 16.3 +/- 1.6 19.1 +/- 0.9 18.7 +/- 1.8 D-163 44.3 +/- 0.7 42.4 +/- 2.6 42.6 +/- 1.2 43.0 +/- 1.2 D-164 16.1 +/- 0.7 11.4 +/- 0.9 16.3 +/- 0.8 15.4 +/- 1.0 Mean +/- s.d. 32.8 +/- 18.0 30.6 +/- 19.9 32.3 +/- 17.3 31.0 +/- 16.2 N=

aN No data; TLD missing in field.

11-2

DUANE ARNOLD Table 12. Milk samples, analyses for iodine-131 and gamma emitting isotopes.

Collection: Monthly during non-grazing season (October 1 through April 30): biweekly during grazing season (May 1 through September 30)

Location D-1 08 Date Lab Concentration (pCi/L)

Collected Code 1-131 K-40 Cs-134 Cs-137 Ba-140 La-140 01-10-12 DMI- 143 <0.3 1325 +/- 118 <3.7 <4.3 <20.4 <2.5 02-07-12 DMI- 695 < 0.3 1477 +/- 107 < 3.0 < 1.8 < 8.5 < 1.9 03-06-12 DMI- 1140 <0.3 1303 +/-118 <3.4 <4.2 < 15.4 <2.8 04-10-12 DMI- 1834 <0.4 1338 +/- 114 <3.4 <3.9 < 14.3 <2.1 05-08-12 DMI- 2683 <0.4 1431 +/- 118 <3.1 <4.3 <9.0 <1.4 05-22-12 DMI- 3049 < 0.3 1319 +/- 101 < 2.5 < 2.9 < 7.3 < 2.8 06-05-12 ND a 06-19-12 ND 07-03-12 ND Location D-138 b 07-17-12 DMI- 4263 <0.5 1419 +/- 113 <3.2 <2.4 <9.1 <2.3 07-31-12 DMI- 4777 < 0.4 1680 +/- 115 < 3.9 < 4.9 < 14.7 < 1.4 08-14-12 DMI- 5109 < 0.3 1436 +/- 109 < 2.0 < 4.2 < 8.0 < 2.7 08-28-12 DMI- 5427 < 0.3 1466 +/- 125 < 2.5 < 4.3 < 15.5 < 2.0 09-06-12 DMI- 5627 < 0.4 1402 +/- 106 < 2.4 < 2.8 < 17.9 < 1.7 09-18-12 DMI- 5893 < 0.4 1542 +/- 125 < 4.0 < 4.1 < 13.2 < 2.8 10-02-12 DMI- 6160 < 0.3 1390 +/- 98 < 2.3 < 2.9 < 13.5 < 2.4 11-06-12 DMI- 7163 <0.3 1547 +/-94 <2.5 < 1.9 <9.0 <3.1 12-04-12 DMI- 7766 <0.3 1173 +/- 104 <2.8 <3.5 <11.5 <3.2 Location D-110 Date Lab Concentration (pCi/L)

Collected Code 1-131 K-40 Cs-1 34 Cs-137 Ba-140 La-140 01-10-12 DMI- 144 <0.3 1358 +/-98 <2.8 <3.2 < 13.0 <2.3 02-07-12 DMI- 696 <0.3 1399 +/-93 <2.7 <3.1 < 11.4 <3.0 03-06-12 DMI- 1141 <0.3 1316+/-112 <2.1 <3.4 <17.3 <1.3 04-10-12 DMI- 1835 <0.4 1409 +/- 103 <2.2 <3.4 <11.8 <3.1 05-08-12 DMI- 2684 <0.4 1517 +/- 121 <3.6 <4.2 <10.5 <1.9 05-22-12 DMI- 3050 < 0.4 1319 +/- 93 < 2.9 < 3.3 < 10.8 < 1.3 06-05-12 DMI- 3446 < 0.3 1443 +/- 115 < 2.6 < 3.8 < 9.2 < 1.2 06-19-12 DMI- 3723 < 0.3 1405 +/- 116 < 2.8 < 3.2 <.11.4 < 1.2 07-03-12 DMI- 3947 < 0.5 1438 +/- 101 < 2.5 < 3.9 < 8.9 < 2.2 07-17-12 DMI- 4262 < 0.2 1412 +/- 102 < 2.4 < 3.3 < 13.2 < 3.5 07-31-12 DMI- 4776 < 0.4 1420 +/- 104 < 3.0 < 2.2 < 17.2 < 3.4 08-14-12 DMI- 5108 <0.3 1427 +/- 102 <2.6 <2.7 <11.7 <2.4 08-28-12 DMI- 5426 < 0.1 1443 +/- 116 < 2.9 < 3.2 < 14.8 < 1.8 09-06-12 DMI- 5626 <0.5 1290 +/- 110 <3.5 <3.4 <11.4 <2.6 09-18-12 DMI- 5892 <0.4 1318 +/- 104 <3.2 <3.3 <11.7 <2.6 10-02-12 DMI- 6159 <0.3 1481 +/- 116 <3.0 <3.0 <13.5 <1.5 11-06-12 DMI- 7162 < 0.3 1283 +/-91 <3.3 < 3.0 < 11.7 < 1.4 12-04-12 DMI- 7765 <0.4 1452 +/- 115 <2.9 <3.3 <12.6 <2.4 a ND = No data; see Table 2.0, Listing of Missed Samples.

b Replacement for D-108 as of 07-17-12.

12-1

DUANE ARNOLD Table 13.1. Well water samples, analyses for gross beta and H3data.

Collection: Quarterly Units: pCi/L Location D-53 Treated Municipal Water Collection Date 02-17-12 05-25-12 08-21-12 01-09-13 Lab Code DWW- 888 DWWM- 3184 DWW- 5300 DVWW- 8339 Gross Beta 1.4 +/- 0.4 1.0 +/- 0.5 2.5 +/- 0.6 -0.3 +/- 0.3 H-3 < 142 < 162 < 153 < 137 Location D-54 Inlet to Municipal Water Collection Date 02-17-12 05-25-12 08-21-12 01-09-13 Lab Code DWW- 889 DWW- 3185 DWW- 5301 DWVN- 8340 Gross Beta 1.2 +/- 0.4 1.2 +/- 0.6 3.4 +/- 0.6 1.9 +/- 0.4 H-3 < 142 < 162 < 153 < 137 Location D-55 On-site Well Collection Date 02-17-12 05-25-12 08-21-12 01-09-13 Lab Code DWW- 890 DWW- 3186 D\AAN- 5302 D\AWW- 8341 b b b Gross Beta 0.4 +/- 0.4 0.9 +/- 0.5 -0.1 +/- 0.6 1.8 +/- 0.4 H-3 < 142 < 162 < 153 < 137 Location D-57 Bull Farm Collection Date 02-17-12 05-25-12 08-21-12 01-09-13 Lab Code DWN- 891 DWMV- 3187 DVWN- 5303 D\AW- 8342 b b Gross Beta 0.3 +/- 0.4 0.7 +/- 0.5 1.0 +/- 0.6 0.9 +/- 0.3 H-3 < 142 < 162 < 153 < 137 Location D-58 Franz Farm Collection Date 02-17-12 05-25-12 08-21-12 01-09-13 Lab Code DWWN- 892 D\AWI- 3188 DWWN- 5304 D\AAN- 8343 Gross Beta 3.5 +/- 0.6 3.1 +/- 0.7 4.7 +/- 0.6 3.6 +/- 0.4 H-3 < 142 < 162 < 153 < 137 Location D-72 Van Note Farm Collection Date 02-17-12 05-25-12 08-21-12 01-09-13 Lab Code DWW- 894 DWWN- 3189 DVWV- 5305 D\WV- 8344 b b b Gross Beta 0.6 +/- 0.8 -0.2 +/- 0.4. 0.5 +/- 0.6 0.4 +/- 0.3 H-3 < 142 < 162 < 153 < 137 aGamma isotopic analysis will be performed ifgross beta activity is greater than 3 pCi/L and/or H3 activity exceeds MDA.

b Value is less than MDA.

13-1

DUANE ARNOLD Table 14. Vegetation (broadleaf), analyses for iodine-131 and other gamma-emitting isotopes.

Collection: Annually Units: pCi/g wet Location D-57 D-94 Lab Code DVE- 4264 DYE- 5337 Date Collected 07-17-12 08-22-12 Sample Type Cabbage Cabbage K-40 1.96 +/- 0.20 1.83 +/- 0.22 Mn-54 < 0.009 < 0.009 Fe-59 < 0.013 < 0.012 Co-58 < 0.003 < 0.006 Co-60 < 0.006 < 0.004 Zn-65 < 0.012 < 0.013 Nb-95 < 0.006 < 0.006 Zr-95 < 0.010 < 0.018 Ru-103 < 0.009 < 0.008 Ru-106 < 0.050 < 0.031 1-131 < 0.013 < 0.008 Cs-I 34 < 0.007 < 0.006 Cs-137 < 0.009 < 0.009 Ce-141 < 0.012 < 0.008 Ce-144 < 0.039 < 0.054 14-1

DUANE ARNOLD Table 15. Vegetation (hay and grain), analyses for gamma-emitting isotopes.

Collection: Annually Units: pCi/g wet Location D-1 6 D-57 D-57 D-57 D-57 Lab Code DVE- 3682 DYE- 3007 DVE- 4007 DVE- 7489 DVE- 7491 Date Collected 06-14-12 05-18-12 07-05-12 11-16-12 11-16-12 Sample Type Wheat grain Hay Forage (Hay) Corn Beans K-40 4.82 +/- 0.52 19.33 +/- 1.36 9.36 +/- 0.54 2.22 +/- 0.23 10.80 +/- 0.49 Mn-54 < 0.013 < 0.041 < 0.018 < 0.008 < 0.008 Fe-59 < 0.035 < 0.060 < 0.036 < 0.012 < 0.042 Co-58 < 0.013 < 0.044 < 0.020 < 0.007 < 0.008 Co-60 < 0.017 < 0.034 < 0.013 < 0.005 < 0.009 Zn-65 < 0.023 < 0.053 < 0.023 < 0.016 < 0.028 Nb-95 < 0.016 < 0.045 < 0.022 < 0.005 < 0.012 Zr-95 < 0.028 < 0.065 < 0.030 < 0.010 < 0.016 Ru-103 < 0.015 < 0.038 < 0.022 < 0.007 < 0.011 Ru-106 < 0.15 < 0.45 < 0.096 < 0.050 < 0.093 1-131 < 0.032 < 0.060 < 0.029 < 0.016 < 0.029 Cs-134 < 0.014 < 0.039 < 0.016 < 0.005 < 0.010 Cs-1 37 < 0.014 < 0.041 < 0.019 < 0.007 < 0.016 Ce-141 < 0.034 < 0.062 < 0.025 < 0.011 < 0.023 Ce-144 < 0.12 < 0.28 < 0.14 < 0.058 < 0.062 Control Location D-109 D-110 D-108 D-108 Lab Code DYE- 7488 DVE- 7494 DYE- 7492 DyE- 7493 Date Collected 11-16-12 11-06-12 11-16-12 11-16-12 Sample Type Corn Corn Corn Beans K-40 3.14 +/- 0.22 2.37 +/- 0.16 2.11 +/- 0.20 14.20 +/- 0.54 Mn-54 < 0.005 < 0.004 < 0.006 < 0.007 Fe-59 < 0.009 < 0.010 < 0.011 < 0.029 Co-58 < 0.006 < 0.004 < 0.004 < 0.008 Co-60 < 0.005 < 0.006 < 0.006 < 0.008 Zn-65 < 0.018 < 0.006 < 0.014 < 0.029 Nb-95 < 0.010 < 0.007 < 0.006 < 0.011 Zr-95 < 0.014 < 0.012 < 0.013 < 0.016 Ru-103 < 0.009 < 0.005 < 0.006 < 0.014 Ru-1 06 < 0.074 < 0.037 < 0.05 < 0.086 1-131 < 0.018 < 0.025 < 0.017 < 0.025 Cs-134 < 0.006 < 0.005 < 0.005 < 0.010 Cs-137 < 0.004 < 0.005 < 0.008 < 0.009 Ce-141 < 0.011 < 0.012 < 0.014 < 0.011 Ce-144 < 0.036 < 0.041 < 0.045 < 0.046 15-1

DUANE ARNOLD Table 16. Surface water samples, analyses for iodine-i 31, tritium and gamma-emitting isotopes.

Collection: Monthly Units: pCi/L Location: D-49 Lab Code DSW- 163 DSW- 808 DSW- 1388 DSW- 2052 DSW- 2763 DSW- 3576 Date Collected 01-11-12 02-16-12 03-19-12 04-16-12 05-11-12 06-11-12 H-3 < 146 < 144 < 143 < 150 < 152 < 140 a

1-131 (Chemistry) < 0.3 < 0.4 1.9 +/- 0.2 < 0.3 < 0.5 < 0.2 Mn-54 < 1.4 < 3.0 < 2.6 <2.1 < 3.4 < 2.4 Fe-59 < 6.4 < 5.7 < 4.7 < 3.3 <2.7 < 3.6 Co-58 < 1.9 < 3.0 < 1.8 < 2.4 < 2.8 < 2.9 Co-60 < 1.4 < 2.8 < 1.5 < 1.9 < 2.2 < 2.0 Zn-65 < 3.2 < 4.8 < 1.6 < 3.6 < 4.8 < 3.2 Nb-95 < 1.7 < 2.1 <2.3 <2.3 < 2.5 < 2.9 Zr-95 < 5.3 < 5.9 < 3.4 < 4.3 < 3.6 < 2.5 1-131 < 5.1 < 4.4 <4.1 < 3.4 < 4.9 < 5.9 Cs-134 < 2.9 <2.7 < 1.9 < 2.5 < 2.4 < 2.7 Cs-1 37 <3.1 <3.1 < 1.9 < 2.6 <3.1 < 2.7 Ba-140 < 13.6 < 17.9 < 13.4 < 13.3 < 13.8 < 10.1 La-140 < 2.4 < 4.9 < 1.1 < 1.3 < 2.9 <2.1 Lab Code DSW- 4145 DSW- 5048 DSW- 5736 DSW- 6958 DSW- 7483 DSW- 8089 Date Collected 07-12-12 08-09-12 09-12-12 10-26-12 11-17-12 12-14-12 H-3 < 141 < 151 < 148 < 159 <144 < 143 1-131 (Chemistry) < 0.4 < 0.2 < 0.4 < 0.3 < 0.4 < 0.2 Mn-54 < 3.4 < 3.0 < 2.6 < 3.9 < 3.5 < 2.7 Fe-59 < 5.8 < 3.8 < 5.2 <6.5 < 7.2 < 3.9 Co-58 <2.9 < 3.4 < 3.2 < 1.9 < 2.7 < 3.3 Co-60 < 2.4 < 3.3 < 3.2 < 4.6 <2.1 < 2.0 Zn-65 <4.1 < 3.3 < 6.5 < 7.2 < 6.4 < 5.0 Nb-95 < 3.3 <4.1 < 2.7 < 3.2 < 3.9 <3.1 Zr-95 < 4.5 <4.1 < 6.9 < 5.0 < 6.2 < 4.7 1-131 < 4.7 < 5.8 < 7.3 < 7.7 < 6.2 <5.0 Cs-1 34 < 3.1 <3.1 <4.1 < 3.9 < 2.3 < 2.5 Cs-137 <4.0 <4.9 < 3.3 <4.1 < 3.8 < 2.2 Ba-1 40 < 13.0 < 12.7 < 15.9 < 19.1 < 18.1 < 14.7 La-1 40 < 1.5 < 3.6 < 4.2 <2.5 <2.7 < 2.0 aAnalysis was repeated. Result of reanalysis: 2.0 t 0.2 pCi/L.

16-1

DUANE ARNOLD Table 16. Surface water samples, analyses for iodine-131, tritium and gamma-emitting isotopes.

Collection: Monthly Units: pCi/L Location: D-50 Lab Code DSW- 164 DSW- 809 DSW- 1389 DSW- 2053 DSW- 2764 DSW- 3577 Date Collected 01-11-12 02-16-12 03-19-12 04-16-12 05-11-12 06-11-12 H-3 < 146 <144 < 143 < 150 < 152 < 140 Mn-54 <3.8 <2.1 < 2.3 < 2.6 < 2.6 < 3.0 Fe-59 <3.9 <5.1 < 2.6 <7.5 < 4.4 <3.7 Co-58 < 3.0 < 3.2 < 1.9 < 2.4 < 3.2 < 3.7 Co-60 < 2.5 < 2.6 < 1.4 < 2.7 <2.1 < 3.4 Zn-65 < 3.0 < 1.5 < 4.2 <5.1 < 1.7 < 3.9 Nb-95 < 2.2 < 2.3 < 2.2 < 2.0 < 4.0 < 3.2 Zr-95 < 5.3 < 5.2 < 3.7 < 2.8 < 4.5 < 3.5 1-131 < 4.5 <4.7 < 2.8 < 3.7 < 5.2 < 3.8 Cs-I 34 < 3.0 < 2.4 < 2.2 < 2.9 < 2.7 < 2.7 Cs-1 37 < 3.0 < 3.2 < 2.4 <2.5 < 3.2 < 3.5 Ba-140 < 12.2 < 13.0 < 9.6 < 12.3 < 18.2 < 11.4 La-140 < 1.8 <2.1 <2.9 < 1.6 < 3.9 < 1.9 Lab Code DSW- 4146 DSW- 5049 DSW- 5737 DSW- 6959 DSW- 7484 DSW- 8090 Date Collected 07-12-12 08-09-12 09-12-12 10-26-12 11-17-12 12-14-12 H-3 < 141 < 133 < 148 < 159 < 144 < 143 Mn-54 < 2.0 <3.1 < 1.9 < 2.4 < 4.3 < 1.8 Fe-59 < 3.9 < 8.0 < 3.0 < 5.9 < 7.9 < 4.9 Co-58 < 1.4 <2.0 < 1.9 < 1.9 < 3.7 < 2.8 Co-60 < 2.7 <2.5 < 2.7 <2.1 <2.8 < 3.3 Zn-65 < 2.7 <5.1 < 2.8 <3.3 < 8.7 < 4.8 Nb-95 < 3.0 <5.1 < 4.0 < 3.2 < 4.9 < 3.3 Zr-95 < 4.6 < 6.6 < 4.8 < 4.8 < 5.5 < 5.3 1-131 <4.1 < 8.6 < 5.9 < 7.4 < 8.6 < 5.3 Cs-1 34 < 2.0 <3.1 < 3.0 < 3.4 < 4.4 < 2.4 Cs-1 37 < 2.0 < 3.0 <3.1 < 2.8 < 2.9 < 3.0 Ba-140 < 11.3 < 23.0 < 16.6 < 9.1 < 11.6 < 14.9 La-140 < 2.9 <2.1 < 2.0 < 3.4 < 4.0 < 1.6 16-2

DUANE ARNOLD Table 16. Surface water samples, analyses for iodine-131, tritium and gamma-emitting isotopes.

Collection: Monthly Units: pCi/L Location: D-51 Lab Code DSW- 165 DSW- 811 DSW- 1390 DSW- 2054 DSW- 2765 DSW- 3578 Date Collected 01-11-12 02-16-12 03-19-12 04-16-12 05-11-12 06-11-12 H-3 < 146 < 144 < 143 < 150 < 152 < 140 Mn-54 < 1.7 <3.1 < 2.6 < 1.9 < 2.5 < 2.6 Fe-59 < 5.6 <4.5 < 5.4 < 3.3 <5.1 < 3.3 Co-58 < 2.0 < 1.7 <2.1 < 2.7 < 1.9 < 1.9 Co-60 < 2.1 < 2.4 < 2.3 < 1.7 < 2.6 < 0.9 Zn-65 < 3.4 <5.1 < 5.6 <4.1 < 3.3 < 3.9 Nb-95 < 1.8 < 3.0 < 1.9 <3.1 < 2.6 < 1.9 Zr-95 < 3.6 < 6.7 < 4.5 < 3.7 < 4.9 < 3.2 1-131 <4.0 < 4.4 <4.5 <4.1 <4.8 <2.1 Cs-1 34 <2.1 < 2.3 < 2.2 < 2.2 < 2.8 < 2.5 Cs-1 37 < 3.0 < 3.2 < 2.6 < 1.7 < 3.0 < 3.4 Ba-140 < 9.0 < 17.7 <6.9 < 11.5 < 19.4 < 12.9 La-1 40 < 2.3 < 3.5 < 2.4 < 1.4 < 2.8 <2.1 Lab Code DSW- 4147 DSW- 5050 DSW- 5738 DSW- 6960 DSW- 7485 DSW- 8091 Date Collected 07-12-12 08-09-12 09-12-12 10-26-12 11-17-12 12-14-12 H-3 < 141 < 133 < 148 < 159 < 144 < 143 Mn-54 < 2.2 < 2.5 <2.3 <2.0 <2.1 <2.7 Fe-59 < 3.9 < 6.3 < 5.2 < 6.8 < 4.2 < 4.6 Co-58 < 1.9 < 1.8 < 2.4 < 2.8 < 1.7 < 2.8 Co-60 <2.5 <3.1 < 2.4 < 2.5 < 2.7 < 2.9 Zn-65 < 1.9 < 4.6 < 4.4 < 4.7 < 4.3 < 3.5 Nb-95 <2.3 < 3.3 < 2.2 < 3.8 < 2.5 < 1.8 Zr-95 < 4.2 <4.5 < 4.2 < 6.3 < 3.5 <2.1 1-131 < 5.2 < 7.9 < 4.8 < 6.7 < 6.5 < 8.0 Cs-1 34 <2.1 <2.3 < 2.4 < 3.4 <2.0 < 3.8 Cs-137 < 3.0 < 1.7 < 4.0 < 3.2 < 2.7 <2.9 Ba-140 < 10.0 < 17.5 < 18.8 < 16.5 < 12.8 < 12.5 La-140 < 1.3 < 2.4 < 3.7 < 3.0 < 3.9 < 1.5 16-3

DUANE ARNOLD Table 16. Surface water samples, analyses for iodine-1 31, tritium and gamma-emitting isotopes.

Collection: Monthly Units: pCi/L Location: D-61 Lab Code DSW- 166 DSW- 812 DSW- 1391 DSW- 2055 DSW- 2766 DSW- 3579 Date Collected 01-11-12 02-16-12 03-19-12 04-16-12 05-11-12 06-11-12 H-3 < 146 <144 < 143 < 150 < 152 < 140 a

1-131 (Chemistry) < 0.3 < 0.3 1.6 +/- 0.2 < 0.3 < 0.3 < 0.2 Mn-54 < 1.5 < 2.2 < 2.8 < 2.8 < 3.3 <2.1 Fe-59 < 2.9 < 6.0 < 2.7 < 5.2 < 4.9 <5.1 Co-58 < 2.0 < 2.3 < 1.7 <2.3 <2.1 < 2.5 Co-60 < 1.1 < 1.4 < 1.6 < 1.8 < 2.3 < 2.3 Zn-65 < 2.3 < 4.9 <4.8 <2.5 < 3.0 < 3.6 Nb-95 < 2.3 < 2.8 <2.8 < 2.2 < 3.2 < 2.4 Zr-95 < 2.6 < 5.4 <4.1 < 5.8 < 7.3 < 5.8 1-131 <4.5 < 4.0 < 5.2 < 3.7 < 4.8 <4.1 Cs- 134 < 3.6 < 2.3 < 2.4 < 2.4 < 2.0 < 1.9 Cs- 137 < 3.0 <2.8 < 2.6 < 3.0 < 3.2 <.3.5 Ba-1 40 < 9.8 < 17.0 < 12.8 < 10.2 < 9.0 < 12.9 La-1 40 < 1.8 < 3.7 < 3.7 < 2.0 < 1.4 < 1.6 Lab Code DSW- 4148 DSW- 5051 DSW- 5739 DSW- 6961 DSW- 7486 DSW- 8092 Date Collected 07-12-12 08-09-12 09-12-12 10-26-12 11-17-12 12-14-12 H-3 < 141 < 133 < 148 < 159 < 144 < 143 1-131 (Chemistry) < 0.3 < 0.2 < 0.4 < 0.3

0.5 < 0.2 Mn-54 < 2.7 < 3.9 < 2.6 <3.1 < 3.9 < 1.7 Fe-59 < 3.2 < 4.6 < 3.9 < 5.2 < 9.2 <4.7 Co-58 < 2.1 < 3.0 <2.5 < 3.4 < 3.5 < 1.2 Co-60 < 3.2 <2.1 < 1.8 < 3.7 < 3.3 < 3.7 Zn-65 <4.0 < 4.0 < 5.5 < 4.6 < 11.1 <4.5 Nb-95 < 3.2 < 4.6 < 3.7 < 3.9 < 7.0 < 2.7 Zr-95 <4.9 < 3.2 < 3.2 < 7.3 < 9.5 < 2.6 1-131 <5.5 < 5.8 < 4.2 < 5.0 <8.1 < 3.8 Cs-1 34 < 2.2 <4.1 < 2.5 < 3.6 < 3.3 < 1.8 Cs-137 < 2.7 <2.5 < 3.2 < 3.3 < 4.6 < 3.3 Ba-140 < 15.7 < 20.6 < 11.4 < 12.6 < 21.1 < 10.9 La- 140 < 2.7 < 3.6 < 3.0

1.5 < 4.9 < 2.3

'Analysis was repeated. Result of reanalysis: 1.5 +/- 0.2 pCi/L.

16-4

DUANE ARNOLD Table 16. Surface water samples, analyses for iodine-1 31, tritium and gamma-emitting isotopes.

Collection: Monthly Units: pCi/L Location: D-99 Lab Code DSW- 167 DSW- 813 DSW- 1392 DSW- 2056 DSW- 2767 DSW- 3580 Date Collected 01-11-12 02-16-12 03-19-12 04-16-12 05-11-12 06-11-12 H-3 < 146 < 144 < 143 < 150 < 152 < 140 Mn-54 < 3.0 < 1.9 <2.0 <2.0 < 2.7 < 2.2 Fe-59 < 4.8 < 4.2 < 4.6 < 4.4 < 5.3 < 3.3 Co-58 < 1.9 < 1.9 <2.7 < 1.8 < 2.2 < 4.3 Co-60 < 2.2 < 1.7 < 2.4 < 0.7 < 2.4 < 3.9 Zn-65 < 4.0 < 2.7 < 3.6 < 4.2 < 7.8 < 6.3 Nb-95 <3.1 < 1.9 < 2.6 <2.1 < 2.6 < 3.9 Zr-95 < 4.8 < 3.8 < 5.7 < 2.4 < 4.7 < 5.9 1-131 <5.1 < 5.2 < 4.9 < 3.7 < 6.0 < 4.6 Cs-1 34 < 3.7 < 2.0 < 2.1 < 1.9 < 2.8 < 1.7 Cs-137 < 4.0 < 2.2 < 2.7 < 2.7 <3.1 < 3.4 Ba-140 < 12.0 < 11.8 < 18.9 < 10.1 < 12.5 < 12.9 La-140 < 1.7 <2.1 < 2.9 <2.1 < 2.0 < 3.0 Lab Code DSW- 4149 DSW- 5052 DSW- 5740 DSW- 6962 DSW- 7487 DSW- 8093 Date Collected 07-12-12 08-09-12 09-12-12 10-26-12 11-17-12 12-14-12 H-3 < 141 < 151 < 149 < 159 < 144 < 143 Mn-54 < 1.6 < 2.2 < 2.2 <3.1 < 2.6 < 1.8 Fe-59 < 3.9 <4.1 < 4.2 < 6.6 < 3.4 < 5.2 Co-58 < 2.4 <2.7 < 1.2 < 2.2 <3.1 < 2.5 Co-60 <2.9 < 2.0 < 1.9 < 4.0 < 4.2 <2.1 Zn-65 < 4.4 < 3.8 < 5.4 < 7.9 < 2.2 < 2.5 Nb-95 < 2.2 < 2.7 < 2.2 < 3.0 <2.1 <4.1 Zr-95 < 5.8 < 4.9 < 3.7 < 6.4 < 6.9 < 4.2 1-131 < 5.4 < 4.4 < 4.3 < 6.4 < 7.6 <4.7 Cs- 134 < 2.8 < 2.4 < 1.6 < 3.2 <3.1 <2.7 Cs-137 < 2.9 < 3.4 <2.9 < 3.6 < 3.7 < 4.2 Ba-140 < 16.1 < 19.7 < 11.2 < 17.3 < 18.5 < 18.2 La-140 < 2.6 < 1.6 < 2.4 <2.8 < 2.2 < 1.8 16-5

DUANE ARNOLD Table 17. Surface water, analysis for strontium.

Collection: Quarterly composites of monthly samples.

Units: pCi/L

Location D-49 Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DSW-1458 DSW-3613 DSW-5822 DSW-8108 Sr-89 < 0.55 < 0.49 < 0.75 < 0.71 Sr-90 < 0.54 < 0.51 < 0.54 < 0.53 Location D-61 Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DSW-1459 DSW-3614 DSW-5823 DSW-8109 Sr-89 < 0.67 < 0.50 < 0.63 < 0.67 Sr-90 < 0.59 < 0.51 < 0.48 < 0.46 17-1

DUANE ARNOLD Table 18. Fish, analyses of edible portion for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/g wet Location Upstream, D-49 Lab Code DF- 3045 DF- 3046 DF- 6168 DF- 6169 Date Collected 05-11-12 05-11-12 09-28-12 09-28-12 Sample Type Cyprinus Carpio Carpiodes Spp. Cyprinus Carpio Moxostoma Sp.

K-40 2.85 +/- 0.31 3.07 +/- 0.32 2.98 +/- 0.36 3.33 +/- 0.43 Mn-54 < 0.012 < 0.006 < 0.007 < 0.014 Fe-59 < 0.029 < 0.025 < 0.015 < 0.015 Co-58 < 0.009 < 0.013 < 0.010 < 0.016 Co-60 < 0.012 < 0.011 < 0.015 < 0.018 Zn-65 < 0.025 < 0.031 < 0.011 < 0.015 Nb-95 < 0.017 < 0.017 < 0.020 < 0.015 Zr-95 < 0.014 < 0.013 < 0.016 < 0.042 Ru-103 < 0.013 < 0.011 < 0.016 < 0.014 Ru-106 < 0.097 < 0.10 < 0.081 < 0.090 Cs-134 < 0.008 < 0.012 < 0.011 < 0.010 Cs-137 < 0.011 < 0.012 < 0.011 < 0.012 Ce-141 < 0.023 < 0.027 < 0.040 < 0.032 Ce-144 < 0.075 < 0.065 < 0.084 < 0.102 Location Downstream, D-61 Lab Code DF- 3047 DF- 3048 DF- 6170 DF- 6171 Date Collected 05-11-12 05-11-12 09-28-12 09-28-12 Sample Type Cyprinus Carpio Carpiodes Spp. Carp Sucker Sp. Moxostoma Sp.

K-40 2.81 +/- 0.33 3.05 +/- 0.35 3.35 +/- 0.38 3.30 +/- 0.38 Mn-54 < 0.013 < 0.014 < 0.015 < 0.013 Fe-59 < 0.027 < 0.030 < 0.032 < 0.014 Co-58 < 0.011 < 0.009 < 0.017 < 0.011 Co-60 < 0.011 < 0.011 < 0.013 < 0.019 Zn-65 < 0.025 < 0.012 < 0.026 < 0.026 Nb-95 < 0.024 < 0.017 < 0.022 < 0.017 Zr-95 < 0.013 < 0.026 < 0.028 < 0.011 Ru-103 < 0.018 < 0.021 < 0.019 < 0.014 Ru-106 < 0.086 < 0.10 < 0.112 < 0.110 Cs-134 < 0.011 < 0.013 < 0.015 < 0.010 Cs-137 < 0.015 < 0.015 < 0.017 < 0.010 Ce-141 < 0.027 < 0.037 < 0.038 < 0.033 Ce-144 < 0.083 < 0.10 < 0.120 < 0.071 18-1

DUANE ARNOLD Table 19. River sediment, analysis for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/g dry Location D-50 (Plant Intake. Control)

Lab Code DBS- 3002 DBS- 7573 Date Collected 05-17-12 11-24-12 K-40 7.62 +/- 0.47 7.21 +/- 0.41 Mn-54 < 0.014 < 0.011 Fe-59 < 0.020 < 0.052 Co-58 < 0.011 < 0.013 Co-60 < 0.010 < 0.009 Zn-65 < 0.036 < 0.028 Nb-95 < 0.018 < 0.024 Zr-95 < 0.023 < 0.027 Ru-103 < 0.015 < 0.016 Ru-106 < 0.065 < 0.10 Cs-1 34 < 0.008 < 0.008 Cs-137 < 0.013 < 0.012 Ce-141 < 0.035 < 0.036 Ce-144 < 0.044 < 0.086 Location D-51 (Discharge)

Lab Code DBS- 3003 DBS- 7575 Date Collected 05-17-12 11-24-12 K-40 8.39 +/- 0.51 7.32 + 0.40 Mn-54 < 0.014 0.012 Fe-59 < 0.029 0.026 Co-58 < 0.013 0.012 Co-60 < 0.005 0.010 Zn-65 < 0.031 0.024 Nb-95 < 0.016 0.012 Zr-95 < 0.020 0.027 Ru-1 03 < 0.018 0.014 Ru-1 06 < 0.11 0.084 Cs-1 34 < 0.009 0.007 Cs-1 37 < 0.015 0.009 Ce-141 < 0.031 0.031 Ce-144 < 0.084 0.083 19-1

DUANE ARNOLD Table 19. River sediment, analysis for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/g dry Location D-107A (North Drainaae Ditch)

Lab Code DBS- 3004 DBS- 7576 Date Collected 05-17-12 11-24-12 K-40 7.61 +/- 0.51 6.28 +/- 0.41 Mn-54 < 0.019 < 0.014 Fe-59 < 0.044 < 0.026 Co-58 < 0.015 < 0.020 Co-60 < 0.016 < 0.008 Zn-65 < 0.032 < 0.028 Nb-95 < 0.032 < 0.019 Zr-95 < 0.032 < 0.014 Ru-103 < 0.028 < 0.018 Ru-106 < 0.15 < 0.074 Cs- 134 < 0.014 < 0.010 Cs-137 < 0.016 < 0.012 Ce-141 < 0.054 < 0.036 Ce-144 < 0.13 < 0.050 19-2

APPENDIX A Supplemental Analyses A-1

A-1. Supplemental Analyses.

Well water samples, conditional analyses for gamma-emitting isotopes a Collection Lab Code Date "4Mn 59Fe 58Co 60Co 65Zn 95Nb 95Zr 134Cs 1Cs 140La 14'Ba D-54 DVWJ- 5301 8/21/2012 <1.6 <3.0 <1.5 <1.6 <3.5 <3.4 <3.4 <2.4 <2.1 <26 <5.7 D-55 b DWM- 890 2/17/2012 <0.8 <3.0 <1.6 <0.6 <1.9 <2.8 <3.2 <1.0 <1.3 <60 <17.1 DWM- 3186 5/25/2012 <2.8 <3.7 <3.5 <2.7 <4.4 <3.9 <3.8 <2.7 <2.7 <13 <4.7 DWW- 5302 8/21/2012 <1.3 <3.1 <0.9 <1.0 <1.9 <1.9 <2.0 <1.0 <1.3 <33 <9.6 DVWN- 8341 1/9/2013 <2.7 <3.8 <2.0 <2.4 <3.4 <3.8 <4.4 <2.5 <2.5 <15 <1.6 D-58 DWW- 892 2/17/2012 <1.5 <4.0 <1.9 <1.2 <2.0 <3.0 <3.3 <1.1 <1.1 <56 <12.2 DWWN- 3188 5/25/2012 <1.0 <3.5 <0.9 <0.7 <1.6 <2.0 <1.8 <0.9 <1.1 <30 <6.6 DWN- 5304 8/21/2012 <1.7 <3.5 <1.8 <1.6 <2.4 <2.2 <2.3 <1.5 <1.9 <22 <4.2 DMWW- 8343 1/9/2013 <3.1 <6.4 <2.7 <2.5 <4.4 <3.0. <4.8 <2.4 <2.4 <17 <2.9 a Gamma isotopic analysis is performed when gross beta activity is greater than 3 pCi/L and/or H3 activity exceeds MDA.

b Analyses performed at client request.

A-2

NG-13-0173, Submittal of 2012 Annual Radiological Environmental Operating Report

Contents

Text

Subject:

6.0 REFERENCES

1.0 INTRODUCTION

SUMMARY

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1.0 INTRODUCTION

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NG-13-0173, Submittal of 2012 Annual Radiological Environmental Operating Report

Text

Subject:

6.0 REFERENCES

1.0 INTRODUCTION

SUMMARY

6.0 REFERENCES

SUMMARY

1.0 INTRODUCTION

Navigation menu

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