ML071280378

Annual Radiological Environmental Operating Report for 2006

ML071280378
Person / Time
Site:	Watts Bar
Issue date:	05/02/2007
From:	James Smith Tennessee Valley Authority
To:	Document Control Desk, NRC/NRR/ADRO
References
Download: ML071280378 (283)

Text

Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 MAY 0 2 2007 10 CFR 50.36a(a)(2)

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Gentlemen:

In the Matter of the ) Docket No. 50-390 Tennessee Valley Authority WATTS BAR NUCLEAR PLANT (WBN) UNIT 1 - ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2006 In accordance with the requirements of the WBN Unit 1 Technical Specifications, Section 5.9.2, "Annual Radiological Environmental Operating Report," and the WBN Offsite Dose Calculation Manual (ODCM), Administrative Control Section 5.1, the 2006 Annual Radiological Environmental Monitoring Program (REMP) results and Data Supplement for WBN are enclosed. The REMP implements 10 CFR 50, Appendix I, Sections IV.B.2, IV.B.3, and IV.C.

The report, which is prepared by TVA's Environmental Radiological Monitoring and Instrumentation in Muscle Shoals, Alabama, describes and summarizes the results of radioactivity measurements made in the vicinity of WBN and laboratory analyses of samples collected in the area. The results of the analysis indicate that exposure to members of the general public, which may have been attributable to the operation of WBN, is negligible. The radioactivity measured was primarily the result of fallout or natural background.

There are no regulatory commitments in this letter. If you should have any questions, please contact me at (423) 365-1824.

Sincerely, J. D. Smith Manager, Site Licensing and Industry Affairs (Acting)

Enclosure cc: See page 2 Printed on recycled paper

.4.

U.S. Nuclear Regulatory Commission Page 2 MAY 0 2 2007 JDS:JLB Enclosure cc (Enclosure):

NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303

Annual Radiological Environmental Operating Report Watts Bar Nuclear Plant Data Supplement 2006

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT WATTS BAR NUCLEAR PLANT DATA SUPPLEMENT 2006 TENNESSEE VALLEY AUTHORITY April 2007

RADIOLOGICAL ENVIRONMENTAL MONITORING DATA WATTS BAR NUCLEAR PLANT 2006 This supplement to the Watts Bar Nuclear Plant Annual Radiological Environmental Operating Report (AREOR) presents the results of individual sample analyses and radiation measurements. The results are ordered by sample type then by sample location and analysis type. If no gamma activity was detected in a sample, the notation 'NO ACTIVITY DETECTED' is entered. The sample locations are described in Appendix A to the AREOR.

These tables include all results, whether above or below the Lower Limit of Detection.

Negative values are an artifact of counting statistics and do not imply a negative activity.

The uncertainty reported for specific analyses such as gross beta, Sr-89 and 90 and tritium is the one sigma counting error. For gamma analyses, the uncertainty reported is the one-sigma error calculated by the gamma spectral analysis software.

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GROSS BETA

.0224 .0025 01/03/06 620042

.0217 .0024 01/10/06 620143

.0178 .0020 01/17/06 620233

.0155 .0018 01/24/06 620370

.0207 .0023 01/31/06 620561

.0217 .0024 02/07/06 620665

.0171 .0019 02/14/06 620775

.0253 .0027 02/21106 620895

.0240 .0026 02/28/06 621064

.0273 .0029 03/07/06 621205 k)

.0205 .0023 03/14/06 621316

.0188 .0021 03/21/06 621477

.0100 .0013 03/28/06 621759

.0195 .0022 04/04/06 621896

.0229 .0025 04/11/06 621989

.0202 .0022 04/18/06 622121

.0209 .0023 04/25/06 622329

.0200 .0022 05/02/06 622474

.0160 .0018 05/09/06 622618

.0132 .0016 05/16/06 622761

.0196 .0022 05/23/06 622932

.0239 .0026 05/30/06 623062

.0217 .0024 .06/06/06 623161

.0244 .0027 06/13/06 623302

.0189 .0021 06/20/06 623459

.0204 .0023 06/27/06 623595

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GROSS BETA

.0295 .0032 07/04/06 623718

.0232 .0025 07/11/06 623857

.0247 .0027 07/18/06 624018

.0276 .0030 07/25/06 624167

.0230 .0025 08/01/06 624294

.0267 .0029 08/08/06 624437

.0165 .0019 08/15/06 624591

.0272 .0029 08/22/06 624696

.0230 .0025 08/29/06 624815

.0167 .0019 09/05/06 624953

.0363 .0038 09/12/06 625110

.0243 .0026 09/19/06 625226

.0177 .0020 09/26/06 625346

.0282 .0030 10/03/06 625481

.0252 .0027 10/10/06 625625

.0241 .0027 10/16/06 625738

.0154 .0017 10/24/06 625892

.0228 .0025 10/31/06 626070

.0276 .0030 11/06/06 626250

.0210 .0023 11/14/06 626355

.0272 .0030 11/20/06 626491

.0247 .0027 11/28/06 626616

.0286 .0031 12/05/06 626789

.0384 .0041 12/12/06 626888

.0332 .0036 12/18/06 626991

.0300 .0032 12/26/06 627154

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

AC-228

.0033 .0017 02/21/06 620977 BE-7

.0882 .0075 01/24/06 620452

.1217 .0110 02/21/06 620977

.1452 .0101 03/21/06 621560

.1442 .0127 04/18/06 622203

.1200 .0090 05/16/06 622843

.1658 .0123 06/13/06 623385

.1318 .0113 07/11/06 623939

.1237 .0104 08/08/06 624519

.0880 .0083 09/05/06 625036

.1093 .0091 10/03/06 625563

.1031 .0094 10/31/06 626168

.1068 .0104 11/28/06 626698

.1335 .0107 12/26/06 627237 BI-214

.0083 .0014 01/24/06 620452

.0078 .0015 02/21/06 620977

.0094 .0014 03/21/06 621560

.0109 .0019 04/18/06 622203

.0049 .0016 05/16/06 622843

.0023 .0010 06/13/06 623385

.0046 .0014 07/11/06 623939

.0056 .0010 08/08/06 624519

.0155 .0021 09/05/06 625036

.0279 .0024 10/03/06 625563

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

BI-214

.0099 .0016 10/31/06 626168

.0075 .0014 11/28/06 626698

.0207 .0022 12/26/06 627237 K-40

.0178 .0064 01/24/06 620452

.0207 .0082 02/21/06 620977

.0116 .0063 03/21/06 621560

.0092 .0063 05/16/06 622843

.0154 .0066 06/13/06 623385

.0109 .0059 08/08/06 624519

.0143 .0067 10/03/06 625563 PB-212

.0001 .0004 04/18/06 622203 PB-214

.0086 .0014 01/24/06 620452

.0101 .0017 02/21/06 620977

.0108 .0012 03/21/06 621560

.0119 .0020 04/18/06 622203

.0056 .0013 05/16/06 622843

.0005 .0007 06/13/06 623385

.0069 .0012 07/11/06 623939

.0072 .0013 08/08/06 624519

.0165 .0019 09/05/06 625036

.0286 .0021 10/03/06 625563

.0106 .0014 10/31/06 626168

.0076 .0013 11/28/06 626698

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Description Analysis Nuclide Activity Error Date Collected Lab Number Station Location 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

PB-214

.0196 12/26/06 627237

.0017 3101 LM1 0.5 MILES SSW GROSS BETA

.0241 .0026 01/03/06 620066

.0195 .0022 01/10/06 620160

.0175 .0020 01/17/06 620263

.0154 .0018 01/24/06 620401

.0188 .0021 01/31/06 620584

.0214 .0023 02/07/06 620682

.0171 .0019 02/14/06 620805

.0239 .0026 02/21/06 620926

.0206 .0023 02/28/06 621087

.0285 .0032 03/07/06 621222

.0202 .0023 03/14/06 621347

.0223 .0024 03/21/06 621509

.0102 .0013 03/28/06 621783

.0182 .0021 04/04/06 621913

.0192 .0021 04/11/06 622019

.0225 .0025 04/18/06 622152

.0205 .0023 04/25/06 622352

.0192 .0021 05/02/06 622507

.0146 .0017 05/09/06 622647

.0124 .0015 05/16/06 622792

.0171 .0019 05/23/06 622956

.0225 .0025 05/30/06 623079

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3101 LM1 0.5 MILES SSW GROSS BETA

.. 0182 .0020 06/06/06 623190

.0216 .0024 06/13/06 623334

.0186 .0021 06/20/06 623482

.0230 .0029 06/27/06 623612

.0302 .0032 07/04/06 623758

.0190 .0021 07/11/06 623888

.0222 .0024 07/18/06 624041

.0257 .0028 07/25/06 624184

.0218 .0024 08/01/06 624325

.0208 .0023 08/08/06 624468

.0150 .0017 08/15/06 624615

.0234 .0025 08/22/06 624713

.0275 .0029 08/29/06 624846

.0138 .0016 09/05/06 624985

.0346 .0037 09/12/06 625135

.0223 .0024 09/19/06 625243

.0148 .0017 09/26/06 625376

.0259 .0031 10/03/06 625512

.0201 .0023 10/10/06 625649

.0262 .0029 10/16/06 625755

.0178 .0020 10/24/06 625922

.0194 .0021 10/31/06 626111

.0257 .0028 11/06/06 626273

.0180 .0020 11/14/06 626372

.0212 .0024 11/20/06 626521

.0226 .0024 11/28/06 626647

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3101 LM1 0.5 MILES SSW GROSS BETA

.0213 .0023 12/05/06 626813

.0310 .0033 12/12/06 626905

.0301 .0032 12/18/06 627021

.0289 .0031 12/26/06 627186 GAMMA SCAN (GELI)

AC-228

.0026 .0011 09/05/06 625043 BE-7

.0821 .0061 01/24/06 620459

.1079 .0097 02/21/06 620984 00

.1276 .0137 03/21/06 621567

.1440 .0117 04/18/06 622210

.1221 .0107 05/16/06 622850

.1355 .0099 06/13/06 623392

.1404 .0100 07/11/06 623946

.1180 .0084 08/08/06 624526

.1050 .0102 09/05/06 625043

.0988 .0114 10/03/06 625570

.0972 .0088 10/31/06 626175

.0937 .0089 11/28/06 626705

.0957 .0075 12/26/06 627244 BI-214

.0011 .0008 02/21/06 620984

.0144 .0019 03/21/06 621567

.0012 .0010 04/18/06 622210

.0049 .0012 05/16/06 622850

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activit Error Date Collected Lab Number 3101 LM1 0.5 MILES SSW GAMMA SCAN (GELI)

BI-214

.0041 .0013 06/13/06 623392

.0019 .0009 07/11/06 623946

.0027 .0009 08/08/06 624526

.0056 .0010 09/05/06 625043

.0259 .0030 10/03/06 625570

.0278 .0023 10/31/06 626175

.0034 .0009 11/28/06 626705

.0073 .0015 12/26/06 627244 K-40

.0336 .0097 01/24/06 620459

'.0

.0105 .0057 04/18/06 622210

.0308 .0090 05/16/06 622850

.0110 .0063 07/11/06 623946

.0033 .0070 08/08/06 624526

.0099 .0058 09105/06 625043

.0094 .0067 10/31/06 626175

.0164 .0066 11/28/06 626705

.0181 .0065 12/26/06 627244 PB-212

.0011 .0004 01/24/06 620459

.0007 .0007 02/21/06 620984

.0011 .0007 03/21/06 621567

.0012 .0006 05/16/06 622850

.0007 .0007 08/08/06 624526

.0008 .0005 11/28/06 626705 PB-214

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3101 LM1 0.5 MILES SSW GAMMA SCAN (GELI)

PB-214

.0001 .0011 01/24/06 620459

.0011 .0008 02/21/06 620984

.0116 .0016 03/21/06 621567

.0027 .0009 04/18/06 622210

.0055 .0016 05/16/06 622850

.0050 .0011 06/13/06 623392

.0003 .0006 07/11/06 623946

.0013 .0007 08/08/06 624526

.0049 .0013 09/05/06 625043

.0273 .0024 10/03/06 625570

.0232 .0016 10/31/06 626175

.0013 .0010 11/28/06 626705

.0072 .0009 12/26/06 627244 TL-208

.0009 .0004 01/24/06 620459

.0004 .0003 08/08/06 624526 3102 LM2 0.5 MILES N GROSS BETA

.0215 .0024 01/03/06 620069

.0200 .0022 01/10/06 620162

.0150 .0017 01/17/06 620266

.0130 .0016 01/24/06 620404

.0175 .0020 01/31/06 620587

.0214 .0024 02/07/06 620684

.0170 .0019 02/14/06 620808

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GROSS BETA

.0262 .0028 02/21/06 620929

.0203 .0023 02/28/06 621090

.0249 .0027 03/07/06 621224

.0190 .0021 03/14/06 621350

.0198 .0022 03/21/06 621512

.0088 .0012 03/28/06 621786

.0200 .0022 04104/06 621915

.0202 .0022 04/11/06 622022

.0200 .0022 04/18/06 622155

.0197 .0022 04/25/06 622355

.0176 .0020 05/02/06 622509

.0156 .0018 05/09/06 622650

.0117 .0014 05/16/06 622795

.0187 .0021 05/23/06 622959

.0241 .0026 05/30/06 623081

.0207 .0023 06/06/06 623193

.0233 .0025 06/13/06 623337

.0199 .0022 06/20/06 623485

.0206 .0023 06/27/06 623614

.0329 .0035 07/04/06 623762

.0194 .0022 07/11/06 623891

.0264 .0030 07/18/06 624044

.0254 .0028 07/25/06 624186

.0232 .0025 08/01/06 624328

.0241 .0027 08/08/06 624471

.0183 .0021 08/15/06 624618

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GROSS BETA

.0248 .0027 08/22/06 624715

.0261 .0028 08/29/06 624849

.0160 .0018 09/05/06 624988

.0331 .0035 09/12/06 625138

.0223 .0024 09/19/06 625245

.0169 .0019 09/26/06 625379

.0234 .0026 10/03/06 625515

.0232 .0025 10/10/06 625652

.0238 .0027 10/16/06 625757

.0205 .0022 10/24/06 625925

.0203 .0023 10/31/06 626114

.0249 .0028 11/06/06 626276

.0186 .0021 11/14/06 626374

.0208 .0024 11/20/06 626524

.0222 .0024 11/28/06 626650

.0248 .0027 12/05/06 626816

.0276 .0031 12/12/06 626907

.0301 .0033 12/18/06 627024

.0300 .0032 12/26/06 627189 GAMMA SCAN (GELI)

AC-228

.0048 .0016 06/13/06 623393

.0023 .0014 08/08/06 624527 BE-7

.0737 .0076 01/24/06 620460

.1085 .0094 02/21/06 620985

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GAMMA SCAN (GELI)

BE-7

.1190 .0118 03/21/06 621568

.1279 .0115 04/18/06 622211

.1122 .0109 05/16/06 622851

.1655 .0113 06/13/06 623393

.1265 .0137 07/11/06 623947

.1397 .0118 08/08/06 624527

.0941 .0093 09/05/06 625044

.0936 .0096 10/03/06 625571

.0913 .0092 10/31/06 626176

.0929 .0098 11/28/06 626706

.0961 .0101 12/26/06 627245 BI-214

.0124 .0016 01/24/06 620460

.0068 .0015 02/21/06 620985

.0142 .0026 03/21/06 621568

.0090 .0015 04/18/06 622211

.0071 .0013 05/16/06 622851

.0089 .0015 06/13/06 623393

.0095 .0019 07/11/06 623947

.0040 .0011 08/08/06 624527

.0151 .0020 09/05/06 625044

.0163 .0020 10/03/06 625571

.0459 .0035 10/31/06 626176

.0522 .0036 11/28/06 626706

.0155 .0022 12/26/06 627245

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GAMMA SCAN (GELI)

K-40

.0146 .0075 02/21/06 620985

.0109 .0064 05/16/06 622851

.0259 .0086 06/13/06 623393

.0304 .0077 09/05/06 625044

.0084 .0088 10/03/06 625571

.0419 .0086 12/26/06 627245 PB-212

.0016 .0007 09/05/06 625044

.0017 .0007 12/26/06 627245 fr~

PB-214

.0160 .0015 01/24/06 620460

.0065 .0011 02/21/06 620985

.0166 .0026 03/21/06 621568

.0112 .0016 04/18/06 622211

.0092 .0014 05/16/06 622851

.0065 .0018 06/13/06 623393

.0103 .0017 07/11/06 623947

.0034 .0015 08/08/06 624527

.0168 .0019 09/05/06 625044

.0171 .0018 10/03/06 625571

.0501 .0037 10/31/06 626176

.0493 .0036 11/28/06 626706

.0165 .0022 12/26/06 627245 TL-208

.0007 .0004 03/21/06 621568

.0014 .0005 09/05/06 625044

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GAMMA SCAN (GELI)

TL-208

.0014 .0004 12/26/06 627245 3106 PM2 SPRING CITY 7.0 MILES NW GROSS BETA

.0231 .0025 01/03/06 620073

.0192 .0022 01/10/06 620165

.0176 .0020 01/17/06 620270

.0152 .0018 01/24/06 620408

.0182 .0021 01/31/06 620591

.0244 .0027 02/07/06 620687

.0201 .0022 02/14/06 620812

.0259 .0028 02/21/06 620933

.0227 .0025 02/28/06 621094

.0232 .0025 03/07/06 621227

.0199 .0022 03/14/06 621354

.0229 .0025 03/21/06 621516

.0095 .0012 03/28/06 621790

.0211 .0023 04/04/06 621918

.0220 .0024 04/11/06 622026

.0206 .0023 04/18/06 622159

.0213 .0024 04/25/06 622359

.0169 .0019 05/02/06 622512

.0151 .0018 05/09/06 622654

.0131 .0016 05/16/06 622799

.0176 .0020 05/23/06 622963

.0256 .0028 05/30/06 623084

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW GROSS BETA

.0202 .0022 06/06/06 623197

.0218 .0024 06/13/06 623341

.0224 .0025 06/20/06 623489

.0221 .0024 06/27/06 623617

.0306 .0033 07/04/06 623767

.0193 .0022 07/11/06 623895

.0220 .0024 07/18/06 624048

.0274 .0029 07/25/06 624189

.0238 .0026 08/01/06 624332

.0244 .0027 08/08/06 624475

.0174 .0020 08/15/06 624622

.0277 .0030 08/22/06 624718

.0289 .0031 08/29/06 624853

.0164 .0019 09/05/06 624992

.0320 .0034 09/12/06 625142

.0247 .0027 09/19/06 625248

.0166 .0019 09/26/06 625383

.0215 .0024 10/03/06 625519

.0221 .0024 10/10/06 625656

.0254 .0028 10/16/06 625760

.0193 .0021 10/24/06 625929

.0231 .0025 10/31/06 626118

.0236 .0026 11/06/06 626280

.0197 .0022 11/14/06 626377

.0228 .0025 11/20/06 626528

.0242 .0026 11/28/06 626654

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW GROSS BETA

.0238 .0026 12/05/06 626820

.0298 .0032 12/12/06 626910

.0296 .0032 12/18/06 627028

.0299 .0032 12/26/06 627193 GAMMA SCAN (GELI)

BE-7

.0843 .0081 01/24/06 620461

.1106 .0099 02/21/06 620986

.1182 .0096 03/21/06 621569

.1341 .0094 04/18/06 622212

.1231 .0102 05/16/06 622852

.1475 .0084 06/13/06 623394

.1356 .0082 07/11/06 623948

.1223 .0122 08/08/06 624528

.0747 .0075 09/05/06 625045

.0908 .0096 10/03/06 625572

.1094 .0103 10/31/06 626177

.0969 .0097 11/28/06 626707

.0916 .0081 12/26/06 627246 BI-214

.0050 .0012 01/24/06 620461

.0034 .0008 02/21/06 620986

.0071 .0015 03/21/06 621569

.0026 .0009 04/18/06 622212

.0091 .0016 05/16/06 622852

.0040 .0011 06/13/06 623394

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW GAMMA SCAN (GELI)

BI-214

.0038 .0012 07/11/06 623948

.0056 .0014 08/08/06 624528

.0092 .0013 09/05/06 625045

.0140 .0018 10/03/06 625572

.0226 .0023 10/31/06 626177

.0167 .0019 11/28/06 626707

.0110 .0016 12/26/06 627246 K-40

.0137 .0062 01/24/06 620461

.0026 .0083 02/21/06 620986 1?0

.0070 .0094 03/21/06 621569

.0031 .0054 06/13/06 623394

.0094 .0061 07/11/06 623948

.0044 .0077 09/05/06 625045

.0002 .0042 10/03/06 625572

.0113 .0065 10/31/06 626177

.0177 .0071 11/28/06 626707 PB-212

.0004 .0006 02/21/06 620986

.0012 .0008 08/08/06 624528

.0009 .0006 12/26/06 627246 PB-214

.0062 .0013 01/24/06 620461

.0022 .0009 02/21/06 620986

.0069 .0012 03/21/06 621569

.0054 .0010 04/18/06 622212

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW GAMMA SCAN (GELI)

PB-214

.0136 .0019 05/16/06 622852

.0068 .0012 06/13/06 623394

.0046 .0008 07/11/06 623948

.0044 .0014 08/08/06 624528

.0102 .0013 09/05/06 625045

.0158 .0018 10/03/06 625572

.0229 .0017 10/31/06 626177

.0186 .0020 11/28/06 626707

.0115 .0012 12/26/06 627246 TL-208

.0003 .0004 04/18/06 622212

.0004 .0006 12/26/06 627246 3107 PM3 10.4 MILES NNE GROSS BETA

.0230 .0025 01/03/06 620076

.0204 .0023 01/10/06 620167

.0150 .0017 01/17/06 620273

.0158 .0018 01/24/06 620411

.0174 .0020 01/31/06 620594

.0222 .0024 02/07/06 620689

.0187 .0021 02/14/06 620815

.0224 .0025 02/21/06 620936

.0204 .0023 02/28/06 621097

.0251 .0027 03/07/06 621229

.0195 .0022 03/14/06 621357

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3107 PM3 10.4 MILES NNE GROSS BETA

.0213 .0023 03/21/06 621519

.0100 .0013 03/28/06 621793

.0203 .0023 04/04/06 621920

.0197 .0022 04/11/06 622029

.0198 .0022 04/18/06 622162

.0212 .0023 04/25/06 622362

.0171 .0019 05/02/06 622514

.0176 .0020 05/09/06 622657

.0126 .0015 05/16/06 622802

.0186 .0021 05/23/06 622966

.0250 .0027 05/30/06 623086

.0190 .0021 06/06/06 623200

.0211 .0023 06/13/06 623344

.0213 .0024 06/20/06 623492

.0186 .0022 06/27/06 623619

.0303 .0032 07/04/06 623772

.0200 .0022 07/11/06 623898

.0245 .0027 07/18/06 624051

.0256 .0028 07/25/06 624191

.0216 .0024 08/01/06 624335

.0213 .0024 08/08/06 624478

.0174 .0020 08/15/06 624625

.0259 .0028 08/22/06 624720

.0257 .0028 08/29/06 624856

.0132 .0016 09/05/06 624995

.0357 .0038 09/12/06 625145

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3107 PM3 10.4 MILES NNE GROSS BETA

.0217 .0024 09/19/06 625250

.0152 .0018 09/26/06 625386

.0232 .0028 10/03/06 625522

.0173 .0020 10/24/06 625932

.0258 .0028 10/31/06 626121

.0260 .0028 11/06/06 626283

.0185 .0021 11/14/06 626379

.0191 .0022 11/20/06 626531

.0207 .0023 11/28/06 626657

.0254 .0028 12/05/06 626823

.0317 .0034 12/12/06 626912

.0327 .0035 12/18/06 627031

.0287 .0031 12/26/06 627196 GAMMA SCAN (GELI)

AC-228

.0043 .0022 01/24/06 620462

.0044 .0019 02/21/06 620987

.0051 .0017 12/26/06 627247 BE-7

.0636 .0075 01/24/06 620462

.1297 .0099 02/21/06 620987

.1333 .0120 03/21/06 621570

.1591 .0120 04/18/06 622213

.1276 .0084 05/16/06 622853

.1801 .0145 06/13/06 623395

.1360 .0108 07/11/06 623949

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activijy Error Date Collected Lab Number 3107 PM3 10.4 MILES NNE 0 GAMMA SCAN (GELI)

BE-7

.1200 .0086 08/08/06 624529

.0853 .0083 09/05/06 625046

.1097 .0112 10/03/06 625573

.0924 .0143 10/31/06 626178

.1006 .0068 11/28/06 626708

.0988 .0094 12/26/06 627247 BI-214

.0074 .0012 01/24/06 620462

.0126 .0015 02/21/06 620987 k) .0051 .0013 03/21/06 621570

.0066 .0011 04/18/06 622213

.0062 .0011 05/16/06 622853

.0076 .0012 06/13/06 623395

.0087 .0017 07/11/06 623949

.0105 .0016 08/08/06 624529

.0090 .0015 09/05/06 625046

.0318 .0027 10/03/06 625573

.0253 .0030 10/31/06 626178

.0095 .0014 11/28/06 626708

.0077 .0016 12/26/06 627247 K-40

.0046 .0087 01/24/06 620462

.0263 .0088 02/21/06 620987

.0042 .0067 03/21/06 621570

.0343 .0097 04/18/06 622213

.0008 .0051 05/16/06 622853

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3107 PM3 10.4 MILES NNE GAMMA SCAN (GELI)

K-40

.0172 .0071 06/13/06 623395

.0045 .0079 07/11/06 623949

.0165 .0100 10/03/06 625573

.0264 .0076 12/26/06 627247 PB-212

.0015 .0007 04/18/06 622213

.0001 .0007 08/08/06 624529

.0028 .0008 10/03/06 625573

.0011 .0011 10/31/06 626178 k,) .0007 .0007 11/28/06 626708 PB-214

.0074 .0011 01/24/06 620462

.0133 .0016 02/21/06 620987

.0049 .0010 03/21/06 621570

.0038 .0012 04/18/06 622213

.0076 .0011 05/16/06 622853

.0067 .0014 06/13/06 623395

.0122 .0018 07/11/06 623949

.0074 .0019 08/08/06 624529

.0090 .0012 09/05/06 625046

.0350 .0026 10/03/06 625573

.0225 .0025 10/31/06 626178

.0079 ,0011 11/28/06 626708

.0074 .0018 12/26/06 627247 TL-208

.0006 .0003 04/18/06 622213

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3107 PM3 10.4 MILES NNE GAMMA SCAN (GELI)

TL-208

.0006 .0006 07/11/06 623949

.0019 .0007 10/03/06 625573

.0011 .0005 12/26/06 627247 3108 PM4 7.6 MILES NE/ENE GROSS BETA

.0223 .0024 01/04/06 620078

.0191 .0021 01/10/06 620169

.0140 .0016 01/18/06 620275

.0144 .0017 01/25/06 620414

.0187 .0021 02/01/06 620596

.0173 .0019 02/08/06 620691

.0190 .0021 02/15/06 620817

.0203 .0022 02/22/06 620939

.0213 .0023 03/01/06 621099

.0219 .0024 03/07/06 621231

.0186 .0021 03/15/06 621359

.0174 .0019 03/22/06 621522

.0102 .0013 03/29/06 621795

.0174 .0020 04/04/06 621922

.0206 .0023 04/11/06 622031

.0207 .0022 04/19/06 622165

.0202 .0022 04/26/06 622364

.0153 .0017 05/03/06 622516

.0163 .0018 05/10/06 622659

.0119 .0014 05/17/06 622805

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3108 PM4 7.6 MILES NE/ENE GROSS BETA

.0187 .0021 05/24/06 622968

.0250 .0027 05/31/06 623088

.0185 .0021 06/07/06 623202

.0206 .0023 06/14/06 623347

.0209 .0023 06/21/06 623494

.0183 .0020 06/28/06 623621

.0303 .0032 07/05/06 623775

.0214 .0023 07/12/06 623901

.0204 .0022 07/19/06 624053

.0225 .0025 07/26/06 624193

.0208 .0023 08/02/06 624337

.0226 .0025 08/09/06 624481

.0146 .0017 08/16/06 624627

.0259 .0028 08/23/06 624722

.0260 .0028 08/30/06 624858

.0159 .0018 09/06/06 624998

.0367 .0038 09/13/06 625147

.0211 .0023 09/20/06 625252

.0148 .0017 09/27/06 625388

.0229 .0025 10/04/06 625525

.0218 .0024 10/11/06 625661

.0245 .0027 10/16/06 625764

.0185 .0020 10/24/06 625934

.0232 .0025 11/01/06 626124

.0251 .0028 11/07/06 626285

.0177 .0020 11/15/06 626381

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3108 PM4 7.6 MILES NE/ENE GROSS BETA

.0189 .0022 11/20/06 626533

.0207 .0022 11/29/06 626660

.0227 .0025 12/06/06 626825

.0284 .0030 12/13/06 626914

.0295 .0032 12/19/06 627033

.0275 .0029 12/27/06 627199 GAMMA SCAN (GELI)

BE-7

.0812 .0076 01/25/06 620463

.1008 .0098 02/22/06 620988

.1191 .0100 03/22/06 621571

.1317 .0107 04/19/06 622214

.1129 .0090 05/17/06 622854

.1438 .0104 06/14/06 623396

.1307 .0097 07/12/06 623950

.1363 .0102 08/09/06 624530

.0881 .0089 09/06/06 625047

.0845 .0056 10/04/06 625574

.0993 .0107 11/01/06 626179

.0961 .0088 11/29/06 626709

.0989 .0078 12/27/06 627248 BI-214

.0090 .0013 01/25/06 620463

.0122 .0019 02/22/06 620988

.0046 .0010 03/22/06 621571

.0049 .0010 04/19/06 622214

Tennessee Valley Authority Table-1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3108 PM4 7.6 MILES NE/ENE GAMMA SCAN (GELI)

BI-214

.0043 .0009 05/17/06 622854

.0024 .0009 06/14/06 623396

.0072 .0013 07/12/06 623950

.0023 .0011 08/09/06 624530

.0117 .0019 09/06/06 625047

.0192 .0018 10/04/06 625574

.0127 .0016 11/01/06 626179

.0131 .0017 11/29/06 626709

.0138 .0022 12/27/06 627248

-L.Q K-40

.0291 .0090 01/25/06 620463

.0045 .0079 03/22/06 621571

.0049 .0054 04/19/06 622214

.0099 .0074 05/17/06 622854

.0216 .0072 07/12/06 623950

.0130 .0068 08/09/06 624530

.0036 .0046 10/04/06 625574

.0298 .0088 11/01/06 626179

.0234 .0091 11/29/06 626709

.0153 .0079 12/27/06 627248 PB-212

.0013 .0005 01/25/06 620463

.0002 .0006 03/22/06 621571

.0004 .0007 06/14/06 623396

.0012 .0007 07/12/06 623950

.0025 .0006 08/09/06 624530

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3108 PM4 7.6 MILES NE/ENE GAMMA SCAN (GELI)

PB-212

.0013 .0009 09/06/06 625047

.0013 .0006 11/01/06 626179

.0008 .0007 11/29/06 626709 PB-214

.0082 .0013 01/25/06 620463

.0117 .0010 02/22/06 620988

.0059 .0010 03/22/06 621571

.0059 .0009 04/19/06 622214

.0052 .0013 05/17/06 622854 k)O .0018 .0010 06/14/06 623396 Go

.0053 .0013 07/12/06 623950

.0021 .0010 08/09/06 624530

.0114 .0017 09/06/06 625047

.0207 .0013 10/04/06 625574

.0133 .0018 11/01/06 626179

.0110 .0018 11/29/06 626709

.0129 .0014 12/27/06 627248 TL-208

.0009 .0003 01/25/06 620463

.0004 .0005 03/22/06 621571

.0004 .0004 05/17/06 622854

.0008 .0004 06/14/06 623396

.0011 .0004 07/12/06 623950

.0005 .0003 11/01/06 626179 0011 .0004 11/29/06 626709

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GROSS BETA

.0218 .0024 01/04/06 620080

.0172 .0019 01/11/06 620171

.0140 .0016 01/18/06 620277

.0149 .0017 01/25/06 620417

.0176 .0020 02/01/06 620598

.0201 .0022 02/08/06 620693

.0191 .0021 02/15/06 620819

.0228 .0025 02/22/06 620942

.0215 .0024 03/01/06 621101

.0206 .0023 03/08/06 621233

.0207 .0023 03/15/06 621361

.0184 .0020 03/22/06 621525

.0084 .0011 03/29/06 621797

.0189 .0021 04/05/06 621924

.0187 .0021 04/11/06 622033

.0214 .0023 04/19/06 622168

.0196 .0022 04/26/06 622366

.0159 .0018 05/03/06 622518

.0161 .0018 05/10/06 622661

.0132 .0016 05/17/06 622808

.0192 .0022 05/24/06 622970

.0248 .0027 05/31/06 623090

.0216 .0024 06/07/06 623204

.0259 .0028 06/14/06 623350

.0230 .0025 06/21/06 623496

.0222 .0024 06/28/06 623623

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GROSS BETA

.0329 .0035 07/05/06 623778

.0195 .0022 07/12/06 623904

.0215 .0024 07/19/06 624055

.0271 .0029 07/26/06 624195

.0228 .0025 08/02/06 624339

.0202 .0022 08/09/06 624484

.0186 .0021 08/16/06 624629

.0254 .0027 08/23/06 624724

.0240 .0026 08/30/06 624860

.0162 .0018 09/06/06 625001

.0377 .0040 09/13/06 625149

.0233 .0025 09/20/06 625254

.0169 .0019 09/27/06 625390

.0264 .0029 10/04/06 625528

.0206 .0023 10/11/06 625663

.0246 .0027 10/17/06 625766

.0168 .0019 10/25/06 625936

.0219 .0024 11/01/06 626127

.0263 .0029 11/07/06 626287

.0203 .0022 11/15/06 626383

.0217 .0025 11/20/06 626535

.0270 .0029 11/29/06 626663

.0233 .0025 12/06/06 626827

.0292 .0031 12/13/06 626916

.0311 .0034 12/19/06 627035

.0274 .0029 12/27/06 627202

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

AC-228

.0046 .0012 06/14/06 623397 BE-7

.0646 .0066 01/25/06 620464

.1179 .0117 02/22/06 620989

.1177 .0106 03/22/06 621572.

.1393 .0093 04/19/06 622215

.1203 .0115 05/17/06 622855

.1406 .0105 06/14/06 623397

.1296 .0108 07/12/06 623951

.1186 .0089 08/09/06 624531

.0991 .0075 09/06/06 625048

.0904 .0108 10/04/06 625575

.0874 .0114 11/01/06 626180

.0838 .0062 11/29/06 626710

.0955 .0091 12/27/06 627249 BI-214

.0034 .0010 01/25/06 620464

.0024 .0010 02/22/06 620989

.0036 .0011 03/22/06 621572

.0038 .0012 04/19/06 622215

.0073 .0013 05/17/06 622855

.0067 .0013 06/14/06 623397

.0020 .0009 07/12/06 623951

.0025 .0010 08/09/06 624531

.0042 .0009 09/06/06 625048

.0395 .0030 10/04/06 625575

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

BI-214

.0116 .0017 11/01/06 626180

.0064 .0012 11/29/06 626710

.0274 .0032 12/27/06 627249 K-40

.0055 .0048 01/25/06 620464

.0192 .0091 03/22/06 621572

.0149 .0085 04/19/06 622215

.0304 .0085 05/17/06 622855

.0212 .0078 06/14/06 623397

.0009 .0053 07/12/06 623951

.0116 .0062 09/06/06 625048

.0137 .0066 11/01/06 626180 PB-212

.0010 .0006 03/22/06 621572

.0013 .0007 05/17/06 622855

.0014 .0009 06/14/06 623397 PB-214

.0038 .0009 01/25/06 620464

.0020 .0007 02/22/06 620989

.0011 .0008 03/22/06 621572

.0046 .0010 04/19/06 622215

.0058 .0011 05/17/06 622855

.0046 .0011 06/14/06 623397

.0004 .0007 07/12/06 623951

.0020 .0009 08/09/06 624531

.0048 .0009 09/06/06 625048

Tennessee Valley Authority

. Table 1

RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

PB-214

.0432 .0039 10/04/06 625575

.0134 .0018 11/01/06 626180

.0071 .0016 11/29/06 626710

.0266 .0023 12/27/06 627249 TL-208

.0011 .0004 03/22/06, 621572

.0010 .0005 06/14/06 623397 3203 LM3 1.9 MILES NNE GROSS BETA

.0234 .0027 01/03/06 620092

.0178 .0021 01/10/06 620173

.0165 .0019 01/17/06 620283

.0153 .0018 01/24/06 620423

.0181 .0020 01/31/06 620610

.0203 .0022 02/07/06 620695

.0189 .0021 02/14/06 620825

.0256 .0028 02/21/06 620948

.0225 .0025 02/28/06 621113

.0228 .0025 03/07/06 621235

.0192 .0021 03/14/06 621367

.0190 .0021 03/21/06 621531

.0103 .0013 03/28/06 621809

.0193 .0021 04/04/06 621926

.0200 .0022 04/11/06 622040

.0195 .0022 04/18/06 622174

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE GROSS BETA

.0192 .0021 04/25/06 622378

.0193 .0022 05/02/06 622524

.0154 .0018 05/09/06 622668

.0130 .0015 05/16/06 622814

.0191 .0021 05/23/06 622982

.0256 .0028 05/30/06 623092

.0189 .0021 06/06/06 623211

.0254 .0027 06/13/06 623356

.0191 .0021 06/20/06 623508

.0184 .0021 06/27/06 623625

.0298 .0032 07/04/06 623786

.0178 .0020 07/11/06 623910

.0223 .0024 07/18/06 624068

.0230 .0025 07/25/06 624197

.0219 .0024 08/01/06 624345

.0221 .0024 08/08/06 624490

.0171 .0019 08/15/06 624641

.0248 .0027 08/22/06 624726

.0261 .0028 08/29/06 624866

.0133 .0016 09/05/06 625007

.0356 .0038 09/12/06 625161

.0232 .0025 09/19/06 625256

.0161 .0018 09/26/06 625396

.0248 .0027 10/03/06 625534

.0229 .0025 10/10/06 625675

.0265 .0029 10/16/06 625768

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCIIM3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE GROSS BETA

.0177 .0020 10/24/06 625942

.0235 .0026 10/31/06 626136

.0234 .0026 11/06/06 626299

.0172 .0019 11/14/06 626385

.0201 .0023 11/20/06 626541

.0234 .0025 11/28/06 626669

.0251 .0027 12/05/06 626839

.0304 .0032 12/12/06 626918

.0292 .0032 12/18/06 627040

.0307 .0032 12/26/06 627208 GAMMA SCAN (GELI)

AC-228

.0020 .0012 03/21/06 621573

.0031 .0015 06/13/06 623398 BE-7

.0801 .0086 01/24/06 620465

.1139 .0092 02/21/06 620990

.1269 .0088 03/21/06 621573

.1353 .0119 04/18/06 622216

.1233 .0092 05/16/06 622856

.1544 .0109 06/13/06 623398

.1250 .0123 07/11/06 623952

.1075 .0081 08/08/06 624532

.0851 .0076 09/05/06 625049

.0986 .0073 10/03/06 625576

.1048 .0100 10/31/06 626181

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE GAMMA SCAN (GELI)

BE-7

.0903 .0101 11/28/06 626711

.0939 .0074 12/26/06 627250 BI-214

.0198 .0024 01/24/06 620465

.0056 .0013 02/21/06 620990

.0031 .0012 03/21/06 621573

.0045 .0010 04/18/06 622216

.0011 .0010 05/16/06 622856

.0064 .0010 06/13/06 623398 Uj .0076 .0013 07/11/06 623952 17 .0025 .0009 08/08/06 624532

.0077 .0015 09/05/06 625049.

.0268 .0020 10/03/06 625576

.0274 .0030 10/31/06 626181

.0417 .0040 11/28/06 626711

.0172 .0018 12/26/06 627250 K-40

.0218 .0089 02/21/06 620990

.0119 .0088 04/18/06 622216

.0018 .0059 05/16/06 622856

.0106 .0077 09/05/06 625049

.0073 .0072 10/03/06 625576

.0112 .0052 12/26/06 627250 PB-212

.0010 .0006 01/24/06 620465

.0020 .0007 11/28/06 626711

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activijy Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE GAMMA SCAN (GELI)

PB-214

.0213 .0022 01/24/06 620465

.0042 .0010 02/21/06 620990

.0034 .0010 03/21/06 621573

.0054 .0011 04/18/06 622216

.0041 .0009 06/13/06 623398

.0093 .0023 07/11/06 623952

.0029 .0012 08/08/06 624532

.0087 .0010 09/05/06 625049

.0273 .0022 10/03/06 625576

.0249 .0032 10/31/06 626181

.0349 .0024 11/28/06 626711

.0169 .0015 12/26/06 627250 TL-208

.0006 .0005 02/21/06 620990

.0002 .0003 09/05/06 625049 3204 LM-4WB 0.9 MILES SE GROSS BETA

.0237 .0026 01/03/06 620095

.0171 .0019 01/10/06 620175

.0152 .0018 01/17/06 620286

.0158 .0018 01/25/06 620426

.0187 .0021 01/31/06 620613

.0205 .0023 02/07/06 620697

.0196 .0022 02/14/06 620828

.0253 .0027 02/22/06 620951

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE GROSS BETA

.0216 .0024 02/28/06 621116

.0243 .0026 03/07/06 621237

.0196 .0022 03/14/06 621370

.0173 .0019 03/22/06 621534

.0093 .0012 03/28/06 621812

.0185 .0021 04/04/06 621928

.0220 .0024 04/11/06 622043

.0228 .0025 04/19/06 622177

.0214 .0024 04/25/06 622381 (0, .0166 .0019 05/03/06 622526 1?

.0166 .0019 05/09/06 622671

.0123 .0015 05/16/06 622817

.0175 .0020 05/23/06 622985

.0271 .0029 05/31/06 623094

.0182 .0021 06/06/06 623214

.0222 .0024 06/14/06 623359

.0211 .0024 06/20/06 623511

.0218 .0024 06/28/06 623627

.0316 .0034 07/04/06 623790

.0187 .0021 07/12/06 623913

.0227 .0025 07/18/06 624071

.0262 .0028 07/26/06 624199

.0215 .0024 08/02/06 624348

.0208 .0023 08/09/06 624493

.0166 .0019 08/16/06 624644

.0284 .0031 08/23/06 624728

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE GROSS BETA

.0249 .0027 08/29/06 624869

.0356 .0038 09/12/06 625164

.0213 .0023 09/20/06 625258

.0159 .0019 09/26/06 625399

.0247 .0027 10/04/06 625537

.0223 .0025 10/10/06 625678

.0258 .0028 10/16/06 625770

.0173 .0019 10/24/06 625945

.0183 .0021 10/31/06 626139

.0261 .0029 11/06/06 626302

.0178 .0020 11/14/06 626387

.0214 .0024 11/20/06 626544

.0271 .0030 12/06/06 626842

.0278 .0030 12/12/06 626920

.0308 .0033 12/19/06 627043

.0274 .0029 12/27/06 627211 GAMMA SCAN (GELI)

AC-228

.0029 .0016 01/25/06 620466

.0028 .0014 04/19/06 622217

.0034 .0014 10/31/06 626182 BE-7

.0856 .0094 01/25/06 620466

.1128 .0077 02/22/06 620991

.1288 .0103 03/22/06 621574

.1704 .0130 04/19/06 622217

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activiby Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE GAMMA SCAN (GELI)

BE-7

.1107 .0082 05/16/06 622857

.1491 .0126 06/14/06 623399

.1527 .0118 07/12/06 623953

.1431 .0095 08/09/06 624533

.0879 .0108 09/06/06 625050

.0914 .0084 10/04/06 625577

.1082 .0076 10/31/06 626182

.0723 .0095 11/29/06 626712

.0994 .0085 12/27/06 627251 BI-214

.0103 .0015 01/25/06 620466

.0030 .0011 02/22/06 620991

.0047 .0013 03/22/06 621574

.0059 .0012 04/19/06 622217

.0057 .0012 05/16/06 622857

.0047 .0016 06/14/06 623399

.0062 .0013 07/12/06 623953

.0042 .0011 08/09/06 624533

.0068 .0019 09/06/06 625050

.0355 .0033 10/04/06 625577

.0244 .0024 10/31/06 626182

.0097 .0017 11/29/06 626712

.0184 .0022 12/27/06 627251 K-40

.0072 .0057 02/22/06 620991

.0056 .0063 03/22/06 621574

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE GAMMA SCAN (GELI)

K-40

.0269 .0084 04/19/06 622217

.0099 .0087 05/16/06 .622857

.0039 .0052 08/09/06 624533

.0100 .0096 10/04/06 625577

.0155 .0064 10/31/06 626182

.0100 .0101 11/29/06 626712

.0158 .0062 12/27/06 627251 PB-212

.0002 .0005 05/16/06 622857

.0007 .0006 10/04/06 625577 PB-214

.0090 .0016 01/25/06 620466

.0049 .0013 02/22/06 620991

.0058 .0009 03/22/06 621574

.0047 .0010 04/19/06 622217

.0055 .0012 05/16/06 622857

.0022 .0010 06/14/06 623399

.0100 .0014 -07/12/06 623953

.0049 .0009 08/09/06 624533

.0092 .0015 09/06/06 625050

.0319 .0029 10/04/06 625577

.0224 .0020 10/31/06 626182

.0086 .0017 11/29/06 626712

.0168 .0017 12/27/06 627251 TL-208

.0008 .0004 . 04/19/06 622217

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activihy Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE GAMMA SCAN (GELI)

TL-208

.0003 .0005 05/16/06 622857

.0003 .0004 10/04/06 625577 3205 RM-3 WB 15 MILES NNW GROSS BETA

.0215 .0024 01/03/06 620098

.0191 .0021 01/10/06 620177

.0157 .0018 01/17/06 620289

.0134 .0016 01/24/06 620429

.0169 .0019 01/31/06 620616 A~

.0178 .0020 02/07/06 620699

.0173 .0020 02/14/06 620831

.0226 .0025 02/21/06 620954

.0197 .0022 02/28/06 621119

.0220 .0024 03/07/06 621239

.0178 .0020 03/14/06 621373

.0197 .0022 03/21/06 621537

.0085 .0011 03/28/06 621815

.0179 .0020 04/04/06 621930

.0197 .0022 04/11/06 622046

.0197 .0022 04/18/06 622180

.0200 .0022 04/25/06 622384

.0186 .0021 05/02/06 622528

.0140 .0016 05/09/06 622674

.0121 .0015 05/16/06 622820

.0163 .0019 05/23/06 622988

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW GROSS BETA

.0242 .0026 05/30/06 623096

.0206 .0023 06/06/06 623217

.0213 .0024 06/13/06 623362

.0184 .0021 06/20/06 623514

.0190 .0021 06/27/06 623629

.0272 .0029 07/04/06 623794

.0184 .0021 07/11/06 623916

.0220 .0024 07/18/06 624074

.0254 .0028 07/25/06 624201

.0191 .0021 08/01/06 624351

.0222 .0024 08/08/06 624496

.0163 .0019 08/15/06 624647

.0223 .0024 08/22/06 624730

.0234 .0026 08/29/06 624872

.0165 .0019 09/05/06 625013

.0339 .0036 09/12/06 625167

.0222 .0024 09/19/06 625260

.0139 .0016 09/26/06 625402

.0239 .0026 10/03/06 625540

.0206 .0023 10/10/06 625681

.0203 .0023 10/16/06 625772

.0179 .0020 10/24/06 625948

.0213 .0024 10/31/06 626142

.0218 .0024 11/06/06 626305

.0186 .0021 11/14/06 626389

.0214 .0024 11/20/06 626547

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW GROSS BETA

.0202 .0022 11/28/06 626675

.0212 .0023 12/05/06 626845

.0281 .0030 12/12/06 626922

.0306 .0033 12/18/06 627046

.0249 .0027 12/26/06 627214 GAMMA SCAN (GELI)

AC-228

.0026 .0017 07/11/06 623954

.0052 .0022 10/03/06 625578 A BE-7

.0800 .0056 01/24/06 620467

.1155 .0132 02/21/06 620992

.1316 .0110 03/21/06 621575

.1546 .0131 04/18/06 622218

.1079 .0095 05/16/06 622858

.1638 .0120 06/13/06 623400

.1268 .0083 07/11/06 623954

.1266 .0094 08/08/06 624534

.0908 .0071 09/05/06 625051

.0968 .0082 10/03/06 625578

.1035 .0083 10/31/06 626183

.1002 .0102 11/28/06 626713

.1000 .0117 12/26/06 627252 BI-214

.0067 .0013 01/24/06 620467

.0147 .0024 02/21/06 620992

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW GAMMA SCAN (GELI)

BI-214

.0050 .0012 03/21/06 621575

.0045 .0012 04/18/06 622218

.0014 .0011 05/16/06 622858

.0057 .0011 06/13/06 623400

.0077 .0011 07/11/06 623954

.0025 .0010 08/08/06 624534

.0111 .0020 09/05/06 625051

.0224 .0022 10/03/06 625578

.0181 .0019 10/31/06 626183

.0100 .0015 11/28/06 626713 Y'

.0275 .0030 12/26/06 627252 K-40

.0125 .0078 01/24/06 620467

.0184 .0076 03/21/06 621575

.0034 .0050 04/18/06 622218

.0249 .0096 05/16/06 622858

.0120 .0068 06/13/06 623400

.0068 .0078 07/11/06 623954

.0022 .0069 08/08/06 624534

.0101 .0068 10/03/06 625578

.0064 .0050 10/31/06 626183

.0182 .0075 11/28/06 626713 PB-212

.0014 .0009 02/21/06 620992

.0008 .0004 05/16/06 622858

.0006 .0008 08/08/06 624534

Tennessee Valley Authority Table 1 RADIOACTIVITY IN AIR FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW GAMMA SCAN (GELI)

PB-212

.0022 .0005 10/03/06 625578

.0011 .0007 11/28/06 626713 PB-214

.0085 .0010 01/24/06 620467

.0150 .0017 02/21/06 620992

.0076 .0014 03/21/06 621575

.0032 .0014 04/18/06 622218

.0018 .0010 05/16/06 622858

.0043 .0009 06/13/06 623400

.0108 .0014 07/11/06 623954

, .0021 .0015 08/08/06 624534

.0082 .0012 09/05/06 625051

.0230 .0021 10/03/06 625578

.0193 .0018 10/31/06 626183

.0088 .0013 11/28/06 626713

.0288 .0028 12/26/06 627252

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

BI-214

.0164 .0073 01/24/06 620372

.0305 .0118 01/31/06 620564

.0403 .0108 02/07/06 620667

.0109 .0065 03/14/06 621319

.0036 .0062 07/25/06 624169

.0128 .0067 08/01/06 624297

.0183 .0064 08/22/06 624698

.0199 .0094 09/12/06 625113

.0194 .0091 10/03/06 625483

.0337 .0064 10/10/06 625628

.0171 .0074 10/24/06 625895

.0351 .0092 11/06/06 626253

.0213 .0105 11/14/06 626357

.0215 .0090 11/28/06 626618

.0667 .0161 12/05/06 626792

.0223 .0085 12/12/06 626890

.0345 .0155 12/18/06 626994

.0157 .0072 12/26/06 627156 K-40

.1927 .0397 01/24/06 620372

.2338 .0657 07/04/06 623721

.1813 .0444 07/25/06 624169

.3169 .0875 08/01/06 624297

.2000 .0461 10/03/06 625483

.3543 .0739 10/10/06 625628

.2232 .0631 11/28/06 626618

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Lab Number Error Date Collected 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

K-40

.2222 .0558 12/05/06 626792

.2983 .0768 12/18/06 626994 NO ACTIVITY DETECTED

.0000 .0000 01/03/06 620045

.0000 .0000 02/14/06 620778

.0000 .0000 03/07/06 621207

.0000 .0000 03/28/06 621762

.0000 .0000 04/18/06 622123

.0000 .0000 04/25/06 622332

.0000 .0000 05/02/06 622476 00

.0000 .0000 05/09/06 622621

.0000 .0000 05/16/06 622763

.0000 .0000 06/13/06 623304

.0000 .0000 06/20/06 623462

.0000 .0000 06/27/06 623597

.0000 .0000 07/11/06 623859

.0000 .0000 08/29/06 624818 PB-212

.0068 .0046 03/21/06 621479

.0052 .0054 05/30/06 623064

.0009 .0042 07/18/06 624021

.0089 .0042 08/01/06 624297 PB-214

.0250 .0069 01/10/06 620145

.0023 .0054 01/17/06 620236

.0244 .0086 01/24/06 620372

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

PB-214

.0528 .0112 01/31/06 620564

.0186 .0050 02/07/06 620667

.0076 .0059 02/21/06 620897

.0188 .0087 02/28/06 621067

.0074 .0037 03/21/06 621479

.0247 .0082 04/04/06 621898

.0149 .0075 04/11/06 621992

.0189 .0082 05/23/06 622935

.0134 .0071 06/06/06 623164

.0221 .0082 07/25/06 624169

.0135 .0079 08/01/06 624297

.0046 .0051 08/08/06 624439

.0207 .0097 08/15/06 624594

.0071 .0060 08/22/06 624698

.0215 .0086 09/05/06 624955

.0354 .0118 09/12/06 625113

.0185 .0078 09/19/06 625228

.0333 .0111 09/26/06 625349

.0212 .0071 10/03/06 625483

.0442 .0100 10/10/06 625628

.0226 .0098 10/16/06 625740

.0244 .0135 10/24/06 625895

.0226 .0058 10/31/06 626072

.0438 .0097 11/06/06 626253

.0209 .0076 11/14/06 626357

.0405 .0106 11/20/06 626494

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

PB-214

.0282 .0079 11/28/06 626618

.0609 .0098 12/05/06 626792

.0442 .0121 12/12/06 626890

.0595 .0140 12/18/06 626994

.0212 .0077 12/26/06 627156 3101 LM1 0.5 MILES SSW GAMMA SCAN (GELI)

BI-214

.0160 .0066 01/10/06 620161

.0249 .0089 01/31/06 620586

.0281 .0089 02/07/06 620683

.0155 .0071 06/06/06 623192

.0084 .0101 06/27/06 623613

.0116 .0064 08/08/06 624469

.0147 .0083 08/29/06 624848

.0088 .0055 09/05/06 624986

.0172 .0062 09/19/06 625244

.0327 .0080 09/26/06 625378

.0409 .0181 10/03/06 625513

.0371 .0138 10/10/06 625651

.0247 .0088 10/16/06 625756

.0368 .0103 10/31/06 626112

.0532 .0102 11/06/06 626275

.0152 .0063 11/14/06 626373

.0367 .0148 11/20/06 626523

.0212 .0061 11/28/06 626648

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3101 LM1 0.5 MILES SSW GAMMA SCAN (GEL[)

BI-214

.0289 .0100 12/18/06 627023 K-40

.2142 .0495 01/10/06 620161

.4124 .0633 05/09/06 622649

.2683 .0565 05/16/06 622793

.2479 .0422 08/29/06 624848

.1932 .0481 09/05/06 624986

.2383 .0535 09/19/06 625244

.3477 .0881 10/03/06 625513 LJ* .2946 .0813 10/10/06 625651

.2480 .0480 10/31/06 626112

.2310 .0485 11/06/06 626275

.3250 .0654 12/12/06 626906 NO ACTIVITY DETECTED

.0000 .0000 01/03/06 620068

.0000 .0000 01/24/06 620402

.0000 .0000 02/28/06 621089

.0000 .0000 03/07/06 621223

.0000 .0000 03/21/06 621510

.0000 .0000 03/28/06 621785

.0000 .0000 04/04/06 621914

.0000 .0000 04/18/06 622153

.0000 .0000 05/23/06 622958

.0000 .0000 05/30/06 623080

.0000 .0000 06/13/06 623335

.0000 .0000 06/20/06 623484

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3101 LM1 0.5 MILES SSW GAMMA SCAN (GELI)

NO ACTIVITY DETECTED

.0000 .0000 07/04/06 623760

.0000 .0000 07/18/06 624043

.0000 .0000 07/25/06 624185

.0000 .0000 08/01/06 624327

.0000 .0000 08/15/06 624617

.0000 .0000 10124/06 625924

.0000 .0000 12/26/06 627187 PB-212

.0015 .0036 02/21/06 620927

.0030 .0034 04/11/06 622021

.0046 .0044 05/02/06 622508

.0089 .0037 07/11/06 623889 PB-214

.0075 .0065 01/10/06 620161

.0079 .0045 01/17/06 620265

.0526 .0083 01/31/06 620586

.0121 .0060 02/07/06 620683

.0208 .0091 02/14/06 620807

.0264 .0080 02/21/06 620927

.0259 .0079 03/14/06 621349

.0166 .0060 04/11/06 622021

.0158 .0066 04/25/06 622354

.0199 .0083 06/06/06 623192

.0105 .0092 06/27/06 623613

.0104 .0043 08/08/06 624469

.0240 .0074 08/22/06 624714

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3101 LM1. 0.5 MILES SSW GAMMA SCAN (GELI)

PB-214

.0073 .0052 09/05/06 624986

.0358 .0097 09/12/06 625137

.0252 .0078 09/19/06 625244

.0371 .0086 09/26/06 625378

.0268 .0097 10/10/06 625651

.0171 .0064 10/16/06 625756

.0220 .0080 10/31/06 626112

.0483 .0164 11/06/06 626275

.0201 .0067 11/14/06 626373

.0404 .0108 11/20/06 626523

.0175 .0066 11/28/06 626648

.0271 .0079 12/05/06 626815

.0304 .0089 12/12/06 626906

.0355 .0111 12/18/06 627023 3102 LM2 0.5 MILES N GAMMA SCAN (GELI)

BI-214

.0276 .0091 01/10/06 620164

.0323 .0116 01/24/06 620406

.0371 .0139 01/31/06 620590

.0361 .0118 02/07/06 620686

.0142 .0067 02/21/06 620931

.0205 .0072 02/28/06 621093

.0286 .0118 04/04/06 621917

.0048 .0063 06/13/06 623339

.0209 .0088 07/18/06 624047

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GAMMA SCAN (GELI)

BI-214

.0144 .0088 09/12/06 625141

.0269 .0094 09/19/06 625247

.0271 .0097 10/10/06 625655

.0194 .0070 10/31/06 626116

.0528 .0106 11/06/06 626279

.0284 .0079 11/14/06 626376

.0517 .0116 11/20/06 626527

.0108 .0063 11/28/06 626652

.0331 .0082 12/05/06 626819

.0427 .0120 12/18/06 627027 K-40

.2063 .0448 01/10/06 620164

.2341 .0576 01/24/06 620406

.2432 .0569 02/21/06 620931

.2808 .0629 02/28/06 621093

.2807 .0690 07/18/06 624047

.3000 .0645 09/05/06 624990

.3064 .0669 09/12/06 625141

.2746 .0590 09/19/06 625247

.2113 .0454 11/14/06 626376

.3043 .0880 11/20/06 626527

.2236 .0654 11/28/06 626652

.2915 .0753 12/05/06 626819

.2129 .0563 12/26/06 627191 NO ACTIVITY DETECTED

.0000

.0000 01/03/06 620072

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GAMMA SCAN (GELI)

NO ACTIVITY DETECTED

.0000 .0000 03/07/06 621226

.0000 .0000 03/21/06 621514

.0000 .0000 03/28/06 621789

.0000 .0000 04/11/06 622025

.0000 .0000 04/18/06 622157

.0000 .0000 04/25/06 622358

.0000 .0000 05/02/06 622511

.0000 .0000 05/09/06 622653

.0000 .0000 05/30/06 623083

.0000 .0000 06/20/06 623488

.0000 .0000 06/27/06 623616

.0000 .0000 07/04/06 623765

.0000 .0000 07/25/06 624188

.0000 .0000 08/01/06 624331

.0000 .0000 08/08/06 624473

.0000 .0000 08/22/06 624717

.0000 .0000 10/16/06 625759

.0000 .0000 12/12/06 626909 PB-212

.0151 .0042 09/12/06 625141

.0026 .0046 09/19/06 625247

.0085 .0038 12/26/06 627191 PB-214

.0064 .0047 01110/06 620164

.0229 .0074 01/17/06 620269

.0428 .0120 01/31/06 620590

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GAMMA SCAN (GELI)

PB-214

.0348 .0109 02/07/06 620686

.0193 .0059 02/14/06 620811

.0215 .0076 03/14/06 621353

.0308 .0064 04/04/06 621917

.0117 .0053 05/16/06 622797

.0148 .0066 05/23/06 622962

.0178 .0051 06/06/06 623196

.0036 .0039 07/11/06 623893

.0427 .0128 07/18/06 624047

.0138 .0066 08/15/06 624621

.0165 .0048 08/29/06 624852

.0259 .0078 09/05/06 624990

.0200 .0057 09/12/06 625141

.0265 .0074 09/19/06 625247

.0461 .0117 09/26/06 625382

.0229 .0075 10/03/06 625517

.0396 .0098 10/10/06 625655

.0273 .0066 10/24/06 625928

.0329 .0096 10/31/06 626116

.0525 .0083 11/06/06 626279

.0163 .0065 11/14/06 626376

.0419 .0138 11/20/06 626527

.0328 .0113 11/28/06 626652

.0474 .0105 12/05/06 626819

.0601 .0132 12/18/06 627027

.0229 .0068 12/26/06 627191

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW GAMMA SCAN (GELI)

BI-214

.0499 .0106 03/28/06 621792

.0127 .0057 06/13/06 623342

.0421 .0081 06/20/06 623491

.0210 .0105 07/18/06 624050

.0140 .0070 08/15/06 624624

.0206 .0082 09/19/06 625249

.0464 .0093 09/26/06 625385

.0307 .0086 10/03/06 625520

.0278 .0101 10/10/06 625658

.0768 .0119 11/06/06 626282

.0717 .0132 11/20/06 626530

.0478 .0112 12/05/06 626822

.0294 .0127 12/12/06 626911

.0377 .0153 12/18/06 627030 K-40

.2964 .0820 02/14/06 620814

.2853 .0719 03/28/06 621792

.2680 .0481 08/08/06 624476

.2716 .0648 09/26/06 625385

.3490 .0744 10/10/06 625658

.3169 .0633 11/06/06 626282

.2887 .0493 12/05/06 626822

.1940 .0450 12/12/06 626911 NO ACTIVITY DETECTED

.0000 .0000 01/03/06 620075

.0000 .0000 01/10/06 620166

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW GAMMA SCAN (GELI)

NO ACTIVITY DETECTED

.0000 .0000 01/17/06 620272

.0000 .0000 02/07/06 620688

.0000 .0000 02/21/06 620934

.0000 .0000 02/28/06 621096

.0000 .0000 03/07/06 621228

.0000 .0000. 03/21/06 621517

.0000 .0000 04/04/06 621919

.0000 .0000 04/11/06 622028

.0000 .0000 04/18/06 622160

.0000 .0000 04/25/06 622361 0o

.0000 .0000 05/09/06 622656

.0000 .0000 05/16/06 622800

.0000 .0000 05/23/06 622965

.0000 .0000 05/30/06 623085

.0000 .0000 06/27/06 623618

.0000 .0000 07/04/06 623769

.0000 .0000 07/11/06 623896

.0000 .0000 07/25/06 624190

.0000 .0000 08/01/06 624334

.0000 .0000 08/29/06 624855

.0000 .0000 09/12/06 625144

.0000 .0000 11/28/06 626655 PB-212

.0021 .0057 01/24/06 620409

.0021 -.0032 06/13/06 623342

.0050 .0032 09/05/06 624993

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW GAMMA SCAN (GELI)

PB-212

.0023 .0039 10/31/06 626119

.0018 .0094 12/18/06 627030 PB-214

.0256 .0096 01/31/06 620593

.0244 .0070 03/14/06 621356

.0327 .0108 03/28/06 621792

.0124 .0064 05/02/06 622513

.0121 .0055 06/06/06 623199

.0133 .0074 06/13/06 623342 (J .0352 .0137 07/18/06 624050

.0222 .0067 08/08/06 624476

.0263 .0100 08/22/06 624719

.0157 .0058 09/05/06 624993

.0265 .0073 09/19/06 625249

.0476 .0115 09/26/06 625385

.0254 .0063 10/03/06 625520

.0374 .0083 10/10/06 625658

.0229 .0095 10/16/06 625761

.0151 .0076 10/24/06 625931

.0201 .0076 10/31/06 626119

.1080 .0177 11/06/06 626282

.0248 .0068 11/14/06 626378

.0658 .0110 11/20/06 626530

.0501 .0091 12/05/06 626822

.0199 .0094 12/12/06 626911

.0490 .0091 12/18/06 627030

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW GAMMA SCAN (GELI)

PB-214

.0131 .0065 12/26/06 627194 3107 PM3 10.4 MILES NNE GAMMA SCAN (GELI)

BI-214

.0253 .0080 01/03/06 620077

.0660 .0119 01/31/06 620595

.0242 .0073 02/14/06 620816

.0447 .0084 03/07/06 621230

.0282 .0087 03/14/06 621358

.0067 .0054 04/04/06 621921

.0299 .0094 05/09/06 622658

.0128 .0073 05/30/06 623087

.0156 .0066 06/06/06 623201

.0232 .0093 06/20/06 623493

.0136 .0089 06/27/06 623620

.0297 .0087 09/19/06 625251

.0331 .0102 10/24/06 625933

.0472 .0107 11/06/06 626284

.0301 .0111 11/20/06 626532

.0343 .0080 12/05/06 626824

.0201 .0068 12/26/06 627197 K-40

.1860 .0585 01/03/06 620077

.1785 .0517 02/14/06 620816

.2040 .0662 03/07/06 621230

.2045 .0688 04/04/06 621921

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3107 PM3 10.4 MILES NNE GAMMA SCAN (GELI)

K-40

.1275 .0476 05/30/06 623087

.4751 .0803 06/20/06 623493

..2938 .0563 06/27/06 623620

.3926 .0768 08/15/06 624626

.2268 .0559 10/24/06 625933

.4063 .0660 10/31/06 626122

.3627 .0679 11/14/06 626380

.2605 .0622 12/05/06 626824 NO ACTIVITY DETECTED

.0000 .0000 01/10/06 620168

.0000 .0000 01/17/06 620274

.0000 .0000 01/24/06 620412

.0000 .0000 02/07/06 620690

.0000 .0000 02/21/06 620937

.0000 .0000 02/28/06 621098

.0000 .0000 03/21/06 621520

.0000 .0000 04/11/06 622030

.0000 .0000 04/18/06 622163

.0000 .0000 05/16/06 622803

.0000 .0000 06/13/06 623345

.0000 .0000 07/04/06 623773

.0000 .0000 07/11/06 623899

.0000 .0000 07/25/06 624192

.0000 .0000 08/08/06 624479

.0000 .0000 08/22/06 624721

.0000 .0000 08/29/06 624857

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3107 PM3 10.4 MILES NNE GAMMA SCAN (GELI)

NO ACTIVITY DETECTED

.0000 .0000 09/05/06 624996

.0000 .0000 09/26/06 625387

.0000 .0000 10/03/06 625523

.0000 .0000 12/12/06 626913 PB-212

.0012 .0047 03/28/06 621794

.0003 .0041 07/18/06 624052 PB-214

.0189 .0082 01/03/06 620077

.0985 .0147 01/31/06 620595

.0112 .0050 02/14/06 620816

.0324 .0072 03/07/06 621230

.0428 .0099 03/14/06 621358

.0194 .0056 03/28/06 621794

.0064 .0050 04/25/06 622363

.0029 .0044 05/02/06 622515

.0165 .0072 05/09/06 622658

.0200 .0070 05/23/06 622967

.0131 .0056 06/06/06 623201

.0309 .0094 06/20/06 623493

.0121 .0084 08/01/06 624336

.0200 .0093 08/15/06 624626

.0174 .0067 09/12/06 625146

.0274 .0104 09/19/06 625251

.0242 .0079 10/24/06 625933

.0383 .0156 10/31/06 626122

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3107 PM3 10.4 MILES NNE GAMMA SCAN (GELI)

PB-214

.0524 .0100 11/06/06 626284

.0233 .0075 11/14/06 626380

.0473 .0090 11/20/06 626532

.0198 .0077 11/28/06 626658

.0451 .0145 12/05/06 626824

.0259 .0071 12/18/06 627032 3108 PM4 7.6 MILES NE/ENE GAMMA SCAN (GELI)

BI-214

.0377 .0112 01/04/06 620079

.0879 .0141 02/01/06 620597

.0807 .0133 02/08/06 620692

.0326 .0110 02/15/06 620818

.0162 .0071 02/22/06 620940

.0271 .0075 03/07/06 621232

.0522 .0106 03/15/06 621360

.0113 .0063 04/11/06 622032

.0245 .0089 06/28/06 623622

.0113 .0063 07/05/06 623776

.0153 .0081 07/19/06 624054

.0315 .0106 09/27/06 625389

.0171 .0079 10/04/06 625526

.0393 .0093 10/11/06 625662

.0313 .0094 10/16/06 625765

.0440 .0100 10/24/06 625935

.0382 .0113 11/07/06 626286

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3108 PM4 7.6 MILES NE/ENE GAMMA SCAN (GELI)

BI-214

.0148 .0065 11/15/06 626382

.0805 .0147 11/20/06 626534

.0404 .0113 12/06/06 626826

.0131 .0067 12/27/06 627200 K-40

.3012 .0478 02/22/06 620940

.2071 .0475 06/28/06 623622

.2282 .0563 10/24/06 625935

.2890 .0610 11/07/06 626286

.2408 .0511 11/15/06 626382

.2551 .0564 12/19/06 627034 NO ACTIVITY DETECTED

.0000 .0000 01/10/06 620170

.0000 .0000 03/22/06 621523

.0000 .0000 04/04/06 621923

.0000 .0000 04/19/06 622166

.0000 .0000 05/03/06 622517

.0000 .0000 05/10/06 622660

.0000 .0000 05/17/06 622806

.0000 .0000 05/31/06 623089

.0000 .0000 06/07/06 623203

.0000 .0000 06/14/06 623348

.0000 .0000 07/12/06 623902

.0000 .0000 07/26/06 624194

.0000 .0000 08/02/06 624338

.0000 .0000 08/09/06 624482

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3108 PM4 7.6 MILES NE/ENE GAMMA SCAN (GELI)

NO ACTIVITY DETECTED

.0000 .0000 08/16/06 624628

.0000 .0000 08/23/06 624723

.0000 .0000 09/06/06 624999

.0000 .0000 12/13/06 626915 PB-212

.0021 .0036 02/15/06 620818

.0089 .0054 03/07/06 621232

.0061 .0050 11/01/06 626125 PB-214

.0435 .0080 01/04/06 620079

.0262 .0081 01/18/06 620276

.0219 .0065 01/25/06 620415

.0864 .0150 02/01/06 620597

.0668 .0127 02/08/06 620692

.0156 .0058 02/15/06 620818

.0232 .0089 03/01/06 621100

.0706 .0118 03/15/06 621360

.0388 .0092 03/29/06 621796

.0053 .0048 04/26/06 622365

.0109 .0070 05/24/06 622969

.0145 .0075 06/21/06 623495

.0279 .0054 07/19/06 624054

.0241 .0076 08/30/06 624859

.0306 .0072 09/13/06 625148

.0317 .0089 09/20/06 625253

.0353 .0098 09/27/06 625389

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3108 PM4 7.6 MILES NE/ENE GAMMA SCAN (GELI)

PB-214

.0080 .0056 10/04/06 625526

.0862 .0167 10/11/06 625662

.0206 .0089 10/16/06 625765

.0544 .0103 10/24/06 625935

.0372 .0107 11/07/06 626286

.0850 .0125 11/20/06 626534

.0380 .0081 11/29/06 626661

.0583 .0109 12/06/06 626826

.0544 .0125 12/19/06 627034

.0227 .0070 12/27/06 627200 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

BI-214

.0156 .0087 01/18/06 620279

.0384 .0113 02/01/06 620600

.0861 .0132 02/08/06 620694

.0507 .0119 03/08/06 621234

.0148 .0076 03/15/06 621363

.0391 .0085 03/22/06 621526

.0189 .0093 04/05/06 621925

.0077 .0055 04/26/06 622368

.0119 .0069 06/07/06 623206

.0216 .0095 06/21/06 623498

.0241 .0079 07/26/06 624196

.0172 .0068 08/02/06 624341

.0133 .0059 08/23/06 624725

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activit Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

BI-214

.0160 .0101 09/13/06 625151

.0268 .0063 09/20/06 625255

.0236 .0080 09/27/06 625392

.0174 .0083 10/04/06 625529

.0833 .0122 10/11/06 625665

.0368 .0096 11/07/06 626289

.0216 .0085 11/15/06 626384

.0716 .0138 11/20/06 626537

.0114 .0070 11/29/06 626664

.0524 .0089 12/06/06 626829 K-40

.1626 .0482 03/22/06 621526

.2030 .0334 04/05/06 621925

.1730 .0487 04/26/06 622368

.2106 .0618 06/07/06 623206

.1926 .0463 06/21/06 623498

.2990 .0488 08/30/06 624862

.2476 .0508. 10/04/06 625529

.2102 .0476 10/11/06 625665

.2657 .0612 11/15/06 626384

.3484 .0770. 11/20/06 626537

.2008 .0479 11/29/06 626664

.3606 .0737 12/06/06 626829 NO ACTIVITY DETECTED

.0000 .0000 01/25/06 620418

.0000 .0000 02/22/06 620943

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

NO ACTIVITY DETECTED

.0000 .0000 04/11/06 622035

.0000 .0000 04/19/06 622169

.0000 .0000 05/03/06 622519

.0000 .0000 05/10/06 622663

.0000 .0000 05/24/06 622972

.0000 .0000 05/31/06 623091

.0000 .0000 06/28/06 623624

.0000 .0000 07/05/06 623780

.0000 .0000 08/09/06 624485 00 .0000 .0000 09/06/06 625002

.0000 .0000 10/17/06 625767

.0000 .0000 11/01/06 626128

.0000 .0000 12/13/06 626917

.0000 .0000 12/19/06 627037 PB-212

.0065 .0045 02/15/06 620821

.0105 .0051 07/26/06 624196 PB-214

.0086 .0046 01/04/06 620082

.0178 .0075 01/11/06 620172

.0164 .0059 01/18/06 620279

.0545 .0105 02/01/06 620600

.0770 .0133 02/08/06 620694

.0361 .0070 03/01/06 621103

.0475 .0135 03/08/06 621234

.0332 .0094 03/15/06 621363

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

PB-214

.0433 .0086 03/22/06 621526

.0366 .0072 03/29/06 621799

.0408 .0097 04/05/06 621925

.0398 .0096 05/17/06 622809

.0324 .0102 06/14/06 623351 1 6 .0210 .0061 06/21/06 623498

.0283 .0089 07/12/06 623905

.0275 .0098 07/19/06 624057

.0184 .0089 07/26/06 624196

.0126 .0048 08/16/06 624631

.0197 .0064 08/23/06 624725

.0125 .0060 08/30/06 624862

.0194 .0080 09/13/06 625151

.0233 .0103 09/20/06 625255

.0237 .0095 09/27/06 625392

.0236 .0081 10/04/06 625529

.0942 .0126 10/11/06 625665

.0450 .0126 10/25/06 625938

.0367 .0109 11/07/06 626289

.0155 .0066 11/15/06 626384

.0567 .0146 11/20/06 626537

.0278 .0087 11/29/06 626664

.0526 .0101 12/06/06 626829

.0197 .0093 12/27/06 627203 TL-208

.0086 .0027 12/06/06 626829

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE GAMMA SCAN (GELI)

BI-214

.0123 .0091 01/24/06 620424

.0301 .0100 01/31/06 620612

.0255 .0108 03/14/06 621369

.0263 .0102 05/09/06 622670

.0281 .0061 06/20/06 623510

.0296 .0092 07/18/06 624070

.0144 .0062 08/01/06 624347

.0074 .0081 08/08/06 624491

.0301 .0086 08/15/06 624643

.0316 .0062 09/26/06 625398

.0483 .0108 10/10/06 625677

.0407 .0099 10/24/06 625944

.0120 .0064 10/31/06 626137

.0250 .0066 11/14/06 626386

.0441 .0128 11/20/06 626543

.0209 .0085 12/18/06 627042 K-40

.1721 .0361 02/28/06 621115

.1693 .0399 03/14/06 621369

.2200 .0537 05/09/06 622670

.2947 .0624 06/13/06 623357

.1535 .0563 06/20/06 623510

.2514 .0490 07/18/06 624070

.4422 .0689 08/01/06 624347

.3835 .0629 10/10/06 625677

.2846 .0479 10/24/06 625944

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE GAMMA SCAN (GELI)

K-40

.2227 .0702 10/31/06 626137 NO ACTIVITY DETECTED

.0000 .0000 01/03/06 620094

.0000 .0000 01/10/06 620174

.0000 .0000 02/14/06 620827

.0000 .0000 03/07/06 621236

.0000 .0000 04/04/06 621927

.0000 .0000 04/11/06 622042

.0000 .0000 04/18/06 622175

.0000 .0000 04/25/06 622380

.0000 .0000 05/02/06 622525

.0000 .0000 05/16/06 622815

.0000 .0000 06/06/06 623213

.0000 .0000 06/27/06 623626

.0000 .0000 07/11/06 623911

.0000 .0000 07/25/06 624198

.0000 .0000 08/29/06 624868

.0000 .0000 09/12/06 625163

.0000 .0000 10/03/06 625535

.0000 .0000 10/16/06 625769 PB-212

.0038 .0045 01/17/06 620285

.0055 .0034 02/21/06 620949

.0078 .0038 05/23/06 622984

.0097 .0039 06/13/06 623357

.0074 .0044 07/04/06 623788

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE GAMMA SCAN (GELI)

PB-212

.0038 .0030 11/14/06 626386

.0087 .0079 12/05/06 626841 PB-214

.0257 .0076 01/17/06 620285

.0294 .0096 01/31/06 620612

.0095 .0058 02/07/06 620696

.0276 .0067 03/14/06 621369

.0174 .0080 03/21/06 621532

.0166 .0067 03/28/06 621811

.0132 .0055 05/09/06 622670

.0352 .0125 05/23/06 622984

.0196 .0078 05/30/06 623093

.0163 .0088 06/13/06 623357

.0425 .0132 07/18/06 624070

.0253 .0065 08/08/06 624491

.0144 .0048 08/22/06 624727

.0138 .0057 09/05/06 625008

.0204 .0089 09/19/06 625257

.0400 .0095 09/26/06 625398

.0359 .0085 10/10/06 625677

.0678 .0099 10/24/06 625944

.0301 .0074 10/31/06 626137

.0295 .0151 11/06/06 626301

.0262 .0081 11/14/06 626386

.0819 .0158 11/20/06 626543

.0250 .0069 11/28/06 626670

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activijy Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE GAMMA SCAN (GELI)

PB-214

.0530 .0133 12/05/06 626841

.0382 .0091 12/12/06 626919

.0293 .0108 12/18/06 627042

.0301 .0110 12/26/06 627209 3204 LM-4 WB 0.9 MILES SE GAMMA SCAN (GELI)

BI-214

.0418 .0093 01/31/06 620615

.0148 .0081 02/07/06 620698

-.) .0174 .0077 07/26/06 624200

.0383 .0091 10/10/06 625680

.0383 .0101 10/16/06 625771

.0329 .0080 10/24/06 625947

.0280 .0120 11/20/06 626546

.0533 .0175 12/06/06 626844

.0302 .0107 12/12/06 626921

.0320 .0078 12/27/06 627212 K-40

.2042 .0579 01/03/06 620097

.2516 .0543 01/10/06 620176

.1929 .0529 01/31/06 620615

.3109 .0724 02/07/06 620698

.2968 .0585 05/31/06 623095

.2643 .0546 08/02/06 624350

.3256 .0756 10/10/06 625680

.3877 .0677 11/06/06 626304

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE GAMMA SCAN (GELI)

K-40

.4380 .0700 11/20/06 626546

.4354 .0876 12/12/06 626921 NO ACTIVITY DETECTED

.0000 .0000 01/17/06 620288

.0000 .0000 01/25/06 620427

.0000 .0000 02/14/06 620830

.0000 .0000 02/22/06 620952

.0000 .0000 03/22/06 621535

.0000 .0000 03/28/06 621814

.0000 .0000 04/04/06 621929

.0000 .0000 04/19/06 622178

.0000 .0000 04/25/06 622383

.0000 .0000 05/03/06 622527

.0000 .0000 05/09/06 622673

.0000 .0000 05/16/06 622818

.0000 .0000 06/06/06 623216

.0000 .0000 06/14/06 623360

.0000 .0000 06/20/06 623513

.0000 .0000 06/28/06 623628

.0000 .0000 07/04/06 623792

.0000 .0000 07/18/06 624073

.0000 .0000 08/09/06 624494

.0000 .0000 08/23/06 624729

.0000 .0000 10/31/06 626140

.0000 .0000 12/19/06 627045

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE GAMMA SCAN (GELI)

PB-212

.0044 .0038 03/14/06 621372

.0022 .0036 08/16/06 624646

.0026 .0047 08/29/06 624871 PB-214

.0107 .0063 01/10/06 620176

.0443 .0111 01/31/06 620615

.0328 .0100 02/07/06 620698

.0257 .0080 02/28/06 621118

.0101 .0064 03/07/06 621238

.0175 .0074 04/11/06 622045

.0068 .0045 05/23/06 622987

.0149 .0070 07/12/06 623914

.0072 .0067 09/12/06. 625166

.0372 .0106 09/20/06 625259

.0396 .0099 09/26/06 625401

.0133 .0082 10/04/06 625538

.0543 .0112 10/10/06 625680

.0132 .0062 10/16/06 625771

.0293 .0058 10/24/06 625947

.0438 .0085 11/06/06 626304

.0283 .0085 11/14/06 626388

.0415 .0120 11/20/06 626546

.0632 .0115 12/06/06 626844

.0483 .0117 12/12/06 626921

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW GAMMA SCAN (GELI)

AC-228

.0419 .0109 07/25/06 624202 BI-214

.0257 .0083 01/03/06 620100

.0202 .0074 01/10/06 620178

.0150 .0076 01/31/06 620618

.0125 .0090 02/14/06 620833

.0228 .0073 03/07/06 621240

.0222 .0076 04/04/06 621931

.0095 .0072 04/18/06 622181

.0143 .0078 05/30/06 623097

.0295 .0101 06/27/06 623630

.0102 .0075 07/25/06 624202

.0175 .0090 08/08/06 624497

.0116 .0083 08/22/06 624731

.0282 .0074 09/19/06 625261

.0304 .0093 09/26/06 625404

.0301 .0100 10/10/06 625683

.0445 .0109 10/24/06 625950

.0187 .0077 10/31/06 626143

.0342 .0124 11/06/06 626307

.0220 .0087 11/14/06 626390

.0370 .0143 11/20/06 626549

.0413 .0143 12/05/06 626847

.0193 .0069 12/26/06 627215 K-40

.2727 .0674 01/03/06 620100

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW GAMMA SCAN (GELI)

K-40

.2572 .0620 01/10/06 620178

.2945 .0662 01/31/06 620618

.2664 .0607 02/14/06 620833

.2211 .0471 05/30/06 623097

.3793 .0525 07/25/06 624202

.2888 .0596 .08/22/06 624731

.4454 .0872 09/26/06 625404

.3430 .0775 10/10/06 625683

.1823 .0514 10/31/06 626143

.2312 .0572 11/06/06 626307

.2393 .0537 11/14/06 626390

.3357 .0672 11/20/06 626549

.1424 .0437 12/26/06 627215 NO ACTIVITY DETECTED

.0000 .0000 01/17/06 620291

.0000 .0000 01/24/06 620430

.0000 .0000 02/07/06 620700

.0000 .0000 02/21/06 620955

.0000 .0000 03/21/06 621538

.0000 .0000 04/25/06 622386

.0000 .0000 05/02/06 622529

.0000 .0000 05/16/06 622821

.0000 .0000 05/23/06 622990

.0000 .0000 06/06/06 623219

.0000 .0000 06/13/06 623363

.0000 .0000 07/04/06 623796

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW GAMMA SCAN (GELI)

NO ACTIVITY DETECTED

.0000 .0000 07/11/06 623917

.0000 .0000 08/01/06 624353

.0000 .0000 08/15/06 624649

.0000 .0000 08/29/06 624874

.0000 .0000 09/05/06 625014

.0000 .0000 11/28/06 626676

.0000 .0000 12/12/06 626923

.0000 .0000 12/18/06 627048 PB-212

.0082 .0070 09/12/06 625169 00

.0123 .0076 10/31/06 626143 PB-214

.0242 .0091 01/03/06 620100

.0146 .0073 01/10/06 620178

.0327 .0088 01/31/06 620618

.0123 .0071 02/14/06 620833

.0175 .0066 02/28/06 621121

.0349 .0078 03/07/06 621240

.0279 .0085 03/14/06 621375

.0217 .0078 03/28/06 621817

.0166 .0069 04/04/06 621931

.0351 .0080 04/11/06 622048

.0105 .0088 04/18/06 622181

.0104 .0059 05/09/06 622676

.0109 .0056 05/30/06 623097

.0108 .0092 06120/06 623516

Tennessee Valley Authority Table 2 RADIOACTIVITY IN CHARCOAL FILTER WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW GAMMA SCAN (GELI)

PB-214

.0118 .0044 07/18/06 624076

.0107 .0074 07/25/06 624202

.0266 .0103 09/19/06 625261

.0384 .0078 09/26/06 625404

.0315 .0079 10/03/06 625541

.0223 .0066 10/10/06 625683

.0262 .0100 10/16/06 625773

.0594 .0105 10/24/06 625950

.0365 .0084 10/31/06 626143

.0384 .0111 11/06/06 626307

.0232 .0067 11/14/06 626390

.0329 .0128 11/20/06 626549

.0470 .0105 12/05/06 626847

.0283 .0064 12/26/06 627215

Tennessee Valley Authority Table 3 RADIOACTIVITY IN ATMOSPHERIC MOISTURE WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW TRITIUM

- .1901 .4114 01/03/06 620044.

- .6025 .4907 01/17/06 620235

.1108 .3384 01/31/06 620563

- .0672 .3583 02/14/06 620777

- .2599 .3710 02/28/06 621066

.7548 .4910 03/14/06 621318

- .6711 .3990 03/28/06 621761 3.6649 .8212 04/11/06 621991

- .2365 1.0370 04/25/06 622331 800 .1375 1.0795 05/09/06 622620 p

.5572 1.2998 05/23/06 622934

.2968 1.5066 06/06/06 623163

- .2047 1.2861 06/20/06 623461 1.7893 1.4941 07/04/06 623720 1.8143 1.4835 07/18/06 624020

- .3382 1.4570 08/01/06 624296

.9668 1.5369 08/15/06 624593

- .4812 1.5964 08/29/06 624817

.2142 1.4137 09/12/06 625112

- .3183 1.1629 09/26/06 625348 2.4329 1.0791 10/10/06 625627

- .3564 .7910 10/24/06 625894

..9479 .5944 11/06/06 626252

.2677 .6418 11/20/06 626493

.2002 .5439 12/05/06 626791

.3210 .5110 12/18/06 626993

Tennessee Valley Authority Table 3 RADIOACTIVITY IN ATMOSPHERIC MOISTURE WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3101 LM1 0.5 MILES SSW TRITIUM

.0411 .3970 01/03/06 620067

.0987 .4899 01/17/06 620264

.5933 .4499 01/31/06 620585

.3014 .3866 02/14/06 620806

.0161 .3703 02/28/06 621088

.3038 .9555 03/14/06 621348

.7406 .4354 03/28/06 621784 4.7162 .9627 04/11/06 622020

.7799 .9694 04/25/06 622353 00 .2832 1.0554 05/09/06 622648 4.0585 2.7607 05/23/06 622957 2.7662 1.5898 06/06/06 623191 1.7606 1.2605 06/20/06 623483 1.7007 1.4627 07/04/06 623759

.8228 1.4880 07/18/06 624042 1.4111 1.6396 08/01/06 624326 2.3237 1.5822 08/15/06 624616 2.0341 1.6547 08/29/06 624847 1.7935 1.4401 09/12/06 625136 2.2992 1.2089 09/26/06 625377 2.1776 1.1830 10/10/06 625650

.7054 1.0408 10/24/06 625923

.5934 .6426 11/06/06 626274 1.6133 .9000 11/20/06 626522 2.0327 .7527 12/05/06 626814

.9437 .5604 12/18/06 627022

Tennessee Valley Authority Table 3 RADIOACTIVITY IN ATMOSPHERIC MOISTURE WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N TRITIUM

.0466 .3922 01/03/06 620071

.4708 .4756 01/17/06 620268

.1469 .4691 01/31/06 620589

.2415 .3617 02/14/06 620810

.9011 .3870 02/28/06 621092

.4179 .4958 03/14/06 621352

.1908 .4086 03/28/06 621788 4.0470 .8642 04/11/06 622024

.0457 1.0077 04/25/06 622357 t0 .8830 1.1071 05/09/06 622652 1ý 1.4130 2.4529 05/23/06 622961 1.3725 1.5308 06/06/06 623195 1.0580 1.2640 06/20/06 623487

.5677 1.4027 07/04/06 623764

.7643 1.5092 07/18/06 624046 2.6735 1.4940 08/01/06 624330 1.9624 1.6116 08/29/06 624851

.8331 1.3629 09/12/06 625140 3.3013 1.2198 09/26/06 625381 1.0326 1.0762 10/10/06 625654

.5352 .7896 10/24/06 625927 1.2876 .5621 11/06/06 626278

.2986 .6394 11/20/06 626526 1.3929 .5594 12/05/06 626818

.8677 .4760 12/18/06 627026

Tennessee Valley Authority Table 3 RADIOACTIVITY IN ATMOSPHERIC MOISTURE WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3106 PM2 SPRING CITY 7.0 MILES NW TRITIUM

- .0281 .3784 01/03/06 620074

.2027 .4424 01/17/06 620271

- 1.0001 .4269 01/31/06 620592

- .0665 .3290 02/14/06 620813

.6276 .3680 02/28/06 621095

.2114 .4730 03/14/06 621355

.6183 .3926 03/28/06 621791 1.1704 .6801 04/11/06 622027

- .6167 .9107 04/25/06 622360 00o

- .2587 .9643 05/09/06 622655 I1

.8229 2.2613 05/23/06 622964 1.0901 1.3999 06/06/06 623198

- .3392 1.1561 06/20/06 623490

- .3709 1.3567 07/04/06 623768 2.3060 1.3813 07/18/06 624049 1.1668 1.3110 08/01/06 624333

- .1129 1.3368 08/15/06 624623

- .3008 1.4199 08/29/06 624854

.8997 1.2419 09/12/06 625143

- .7965 1.0550 09/26/06 625384

- 1.8010 .9621 10/10/06 625657

- .4001 .7094 10/24/06 625930

- .6707 .5283 11/06/06 626281

- .5287 .5889 11/20/06 626529

- .1721 .4305 12/18/06 627029

Tennessee Valley Authority Table 3 RADIOACTIVITY IN ATMOSPHERIC MOISTURE WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S TRITIUM

.8522 .4249 01/04/06 620081

.1296 .4512 01/18/06 620278

- .5631 .4366 02/01/06 620599

- .1767 .3484 02/15/06 620820

.0054 .3762 03/01/06 621102

.3935 .5001 03/15/06 621362

.9813 .4736 03/29/06 621798 2.6318 .8781 04/11/06 622034

- 1.2962 .9432 04/26/06 622367

,-c - 1.1429 1.1282 05/10/06 622662 1.8657 2.4590 05/24/06 622971 1.0344 1.7635 06/07/06 623205 1.0075 1.3821 06/21/06 623497

- 1.4958 1.4452 07/05/06 623779

.4287 1.5087 07/19/06 624056 1.6427 1.5521 08/02/06 624340 2.2779 1.9688 08/16/06 624630

- .8767 1.5970 08/30/06 624861

- .6451 1.3680 09/13/06 625150

.1342 1.1359 09/27/06 625391

- 1.0367 1.1490 10/11/06 625664

- 1.3190 .7729 10/25/06 625937

- .2083 .6296 11/07/06 626288

- .3987 .6599 11/20/06 626536

.5258 .5154 12/06/06 626828

.3164 .5037 12/19/06 627036

Tennessee Valley Authority Table 3 RADIOACTIVITY IN ATMOSPHERIC MOISTURE WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3203 LM3 1.9 MILES NNE TRITIUM

.1396 .4123 01/03/06 620093

.2164 .4723 01/17/06 620284

.0947 .4427 01/31/06 620611

- .0199 .3457 02/14/06 620826

.4485 .3745 02/28/06 621114

.2818 .4900 03/14/06 621368

.4835 .4025 03/28/06 621810 5.5973 .9694 04/11/06 622041

.6819 .9251 04/25/06 622379 80 1.3061 1.0747 05/09/06 622669 3.8881 2.5401 05/23/06 622983 2.4313 1.4495 06/06/06 623212 1.1624 1.1738 06/20/06 623509

.1823 1.2406 07/04/06 623787

- .2977 1.3829 07/18/06 624069 2.4712 2.0001 08/01/06 624346

.9736 1.5477 08/15/06 624642 1.4182 1.5373 08/29/06 624867

.5155 1.3468 09/12/06 625162

.1902 1.1510 09/26/06 625397

.0771 1.1277 10/10/06 625676

- .8306 .8141 10/24/06 625943 1.3798 .6307 11/06/06 626300

- .6538 .6221 11/20/06 626542

.5529 .5420 12/05/06 626840

.4299 .5001 12/18/06 627041

Tennessee Valley Authority Table 3 RADIOACTIVITY IN ATMOSPHERIC MOISTURE WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE TRITIUM

- .2062 .4067 01/03/06 620096

.3884 .4796 01/17/06 620287

.0141 .4913 01/31/06 620614

.1936 .3772 02/14/06 620829

.2312 .3942 02/28/06 621117

.1721 .4964 03/14/06 621371

.4985 .4493 03/28/06 621813 4.5900 .9004 04/11/06 622044

- .4317 .9674 04/25/06 622382 80 - .3471 1.0250 05/09/06 622672 1.1496 2.3750 05/23/06 622986

- .1663 1.3562 06/06/06 623215 1.1909 1.1566 06/20/06 623512

- .2391 1.2362 07/04/06 623791 1.4400 1.2955 07/18/06 624072 1.1395 1.3152 08/01/06 624349 3.0083 1.4339 08/16/06 624645 1.9777 1.4726 08/29/06 624870

.3414 1.2764 09/12/06 625165 1.1202 1.1150 09/26/06 625400

- .0455 .9954 10/10/06 625679 1.3697 .7081 10/24/06 625946

- .1281 .4306 11/06/06 626303

.1545 .6746 11/20/06 626545 1.1836 .5507 12/06/06 626843

.1634 .5261 12/19/06 627044

Tennessee Valley Authority Table 3 RADIOACTIVITY IN ATMOSPHERIC MOISTURE WATTS BAR NUCLEAR PLANT PCI/M3 - 0.037 BQ/M3 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW TRITIUM

.0058 .3928 01/03/06 620099

.4076 .4564 01/17/06 620290

.3162 .4229 01/31/06 620617

- .5410 .3226 02/14/06 620832

.2579 .3479 02/28/06 621120

.4544 .4761 03/14/06 621374

.1845 .3951 03/28/06 621816

.4880 .6738 04/11/06 622047

- 1.4493 .9153 04/25/06 622385 00 - .6739 1.1498 05/09/06 622675

- .7191 .7215 05/23/06 622989

- 1.1151 1.5451 06/06/06 623218

- 1.7278 1.4716 06/20/06 623515

- 3.1037 1.4380 07/04/06 623795

- 1.2181 1.4416 07/18/06 624075 1.5495 1.4202 08/01/06 624352

.2962 1.5432 08/15/06 624648

- .8200 1.5918 08/29/06 624873

.3251 1.3969 09/12/06 625168

- .2674 1.1241 09/26/06 625403

- .9422 1.0864 10/10/06 625682

- .7112 .7850 10/24/06 625949

.1698 .5374 11/06/06 626306

- .2584 .6025 11/20/06 626548

- .1812 .5342 12/05/06 626846

.3034 .4741 12/18/06 627047

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2215 KYLE FARM 11.6 MILES ENE IODINE-131

.0001 .0689 01/03/06 620050

.0462 .0802 01/17/06 620247

- .0231 .0695 01/31/06 620568

- .0131 .0415 02/14/06 620789

- .0226 .0677 02/28/06 621071

.0124 .0464 03/14/06 621331

.0358 .0508 03/28/06 621767

.0001 .0712 04/11/06 622003

- .0122 .0386 04/25/06 622336 cc .0643 .0776 05/09/06 622631 co .0074 .0474 05/23/06 622939

- .0176 .0414 06/06/06 623174

.0749 .0781 06/20/06 623466

.0657 .0685 07/04/06 623734

.0133 .0497 07/18/06 624025

- .0208 .0623 08/01/06 624309

.0586 .0611 08/15/06 624598

.0523 .0546 08/29/06 624829

.0077 .0495 09/12/06 625118

.0076 .0489 09/26/06 625360

.0324 .0542 10/10/06 625632

- .0166 .0390 10/24/06 625906

.0129 .0484 11/06/06 626257

.0075 .0482 11/20/06 626504

- .0181 .0425 12/05/06 626797

.0148 .0556 12/18/06 627005

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2215 KYLE FARM 11.6 MILES ENE GAMMA SCAN (GELI)

AC-228 5.0178 4.0083 05/09/06 622631 5.6096 4.3313 06/06/06 623174 12.3182 5.5728 08/29/06 624829 8.7665 4.7334 10/10/06 625632 5.5323 4.3448 12/18/06 627005 BI-214 2.2822 3.4034 01/17/06 620247 9.0512 3.9634 01/31/06 620568

.7622 4.1759 02/14/06 620789 80 4.5215 3.4678 02/28/06 621071 lp 26.4578 6.0114 03/14/06 621331 9.6150 4.2408 03/28/06 621767 1.9597 2.8221 05/23/06 622939

.5254 2.9315 06/06/06 623174 3.8990 3.1668 06/20/06 623466 2.2633 2.5804 07/04/06 623734 5.0603 3.6933 07/18/06 624025 5.0657 3.7572 08/01/06 624309 3.8395 2.9584 08/15/06 624598 7.6469 5.1831 08/29/06 624829 1.4582 3.2553 09/12/06 625118 5.0742 3.7434 09/26/06 625360 9.1079 3.0716 10/10/06 625632 5.7145 3.4164 10/24/06 625906 24.0970 4.6065 11/06/06 626257 1.6943 3.6511 11/20/06 626504

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2215 KYLE FARM 11.6 MILES ENE GAMMA SCAN (GELI)

BI-214 1.3769 3.5833 12/05/06 626797 18.7021 3.5388 12/18/06 627005 K-40 1251.9326 96.7918 01/03/06 620050 1199.3883 97.4223 01/17/06 620247 1246.2640 121.9195 01/31/06 620568 1284.8943 136.9058 02/14/06 620789 1235.4635 101.0264 02/28/06 621071 1287.0663 99.2028 03/14/06 621331 1179.9335 96.9888 03/28/06 621767 1239.9328 86.8789 04/11/06 622003 1408.5435 87.6390 04/25/06 622336 1196.7774 89.7272 05/09/06 622631 1188.3457 87.2098 05/23/06 622939 1232.6718 86.7039 06/06/06 623174 1413.5828 87.3573 06/20/06 623466 1366.3286 98.8949 07/04/06 623734 1203.6251 86.6532 07/18/06 624025 1211.0621 86.5911 08/01/06 624309 1314.1371 88.7496 08/15/06 624598 1219.2970 88.2760 08/29/06 624829 1236.8250 75.2220 09/12/06 625118 1201.2854 88.8624 09/26/06 625360 1243.6118 89.8260 10/10/06 625632 1138.4620 96.1322 10/24/06 625906 1275.6045 100.7492 11/06/06 626257

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2215 KYLE FARM 11.6 MILES ENE GAMMA SCAN (GELI)

K-40 1290.9007 82.4072 11/20/06 626504 1172.4984 84.8700 12/05/06 626797 1265.5527 88.7344 12/18/06 627005 PB-212

.9921 2.2237 02/14/06 620789 2.4099 2.1732 06/20/06 623466 1.1250 1.9639 09/26/06 625360 5.3609 2.6836 10/24/06 625906 PB-214 8.5846 4.3146 01/31/06 620568 9.7264 6.4419 03/14/06 621331 9.2650 3.7120 03/28/06 621767 3.6931 2.7075 06/20/06 623466 4.7460 4.0559 07/04/06 623734 2.1062 3.2173 07/18/06 624025 1.3940 3.8788 08/15/06 624598 1.5485 2.6460 08/29/06 624829 3.5828 3.8893 09/12/06 625118 9.5307 3.0981 09/26/06 625360 5.3673 4.2945 10/10/06 625632 9.5610 4.0975 11/06/06 626257 4.0554 3.1572 12/05/06 626797 11.4555 3.3240 12/18/06 627005 TL-208 2.9632 2.3929 10/24/06 625906

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2215 KYLE FARM 11.6 MILES ENE SR 89

.7329 .8751 02/28/06 621071 1.3711 .8346 06/06/06 623174 1.0897 .8068 08/15/06 624598

.9954 .8269 12/18/06 627005 SR 90

- .0496 .5291 02/28/06 621071

- .1203 .5333 06/06/06 623174 1.6378 .5092 08/15/06 624598

- .0707 .5276 12/18/06 627005 2263 E. HOUSLEY FARM 24.0 MILES SSW IODINE-131

.0327 .0464 01/04/06 620065

.0629 .0593 01/18/06 620262

.0123 .0389 02/01/06 620583

.0481 .0834 02/15/06 620804

.0696 .0656 03/01/06 621086

.0216 .0716 03/15/06 621346

.0695 .0838 03/29/06 621782

.0691 .0834 04/11/06 622018

.0935 .0975 04/26/06 622351

- .0114 .0360 05/10/06 622646

.0410 .0711 05/24/06 622955

.0485 .0841 06/07/06 623189

.0262 .0871 06/21/06 623481

.0423 .0600 07/05/06 623757

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2263 E. HOUSLEY FARM 24.0 MILES SSW IODINE-131

.0564 .0978 07/19/06 624040

.0557 .0525 08/02/06 624324

.0152 .0569 08/16/06 624614

.0539 .0509 08/30/06 624845

.0001 .0649 09/13/06 625133

.0305 .0433 09/27/06 625375

.0224 .0672 10/11/06 625647

.0411 .0713 10/25/06 625921 G .0641 .0568 11/07/06 626272

.0662 .0798 11/21/06 626520

.0155 .0363 12/06/06 626812

.0302 .0505 12/19/06 627020 GAMMA SCAN (GELI)

AC-228 3.0202 4.6494 06/21/06 623481 9.3297 5.3907 08/02/06 624324 4.3890 4.3030 08/16/06 624614 4.8662 3.6745 12/06/06 626812 BI-214 4.6138 2.9525 01/04/06 620065 2.8046 2.2882 01/18/06 620262 17.4098 4.7303 02/01/06 620583 5.7756 4.9344 03/01/06 621086 5.1581 3.0136 03/15/06 621346 9.4320 4.1431 03/29/06 621782 1.3248 2.3054 04/11/06 622018

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2263 E. HOUSLEY FARM 24.0 MILES SSW GAMMA SCAN (GELI)

BI-214

.2861 2.9604 05/10/06 622646 2.4529 3.6038 05/24/06 622955 4.2206 3.5397 06/07/06 623189

.6929 3.4682 06/21/06 623481 1.1969 3.6136 07/05/06 623757 3.5750 2.8134 07/19/06. 624040 5.4999 4.1252 08/02/06 624324 3.8634 3.2255 08/16/06 624614 3.6918 3.6248 08/30/06 624845 5.0630 2.5011 09/27/06 625375 10.6675 4.4224 10/11/06 625647 3.4598 2.4099 10/25/06 625921 5.0536 3.0332 11/07/06 626272 3.2630 2.6130 11/21/06 626520 1.1968 3.0285 12/06/06 626812 9.9871 3.8149 12/19/06 627020 K-40 1362.3113 76.7805 01/04/06 620065 1259.5822 88.9656 01/18/06 620262 1299.9318 92.5792 02/01/06 620583 1351.5760 90.5628 02/15/06 620804 1380.7019 84.7128 03/01/06 621086 1313.0238 88.0906 03/15/06 621346 1396.4591 94.9167 03/29/06 621782 1280.7476 82.4306 04/11/06 622018 1185.4471 102.2268 04/26/06 622351

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2263 E. HOUSLEY FARM 24.0 MILES SSW GAMMA SCAN (GELI)

K-40 1308.8717 91.4638 05/10/06 622646 1295.5114 122.9907 05/24/06 622955 1341.8616 88.7533 06/07/06 623189 1393.7021 89.5317 06/21/06 623481 1235.3110 97.8176 07/05/06 623757 1265.1904 87.8980 07/19/06 624040 1362.6120 83.6321 08/02/06 624324 1526.8759 105.6977 08/16/06 624614 1390.2548 87.2326 08/30/06 624845 1228.0546 104.3388 09/13/06 625133 1367.5230 81.8918 09/27/06 625375 1198.7838 131.4325 10/11/06 625647 1255.1494 83.2042 10/25/06 625921 915.8376 345.0150 11/07/06 626272 1350.4231 124.4636 11/21/06 626520 1227.2284 112.7439 12/06/06 626812 1252.8155 90.6864 12/19/06 627020 PB-212 2.3125 2.1952 02/01/06 620583 5.3464 2.8937 03/01/06 621086 3.9960 3.2846 06/07/06 623189 2.1749 2.6200 10/11/06 625647 2.3574 2.9617 11/07/06 626272 3.3261 3.7171 12/19/06 627020 PB-214

.8072 2.2907 01/04/06 620065

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2263 E. HOUSLEY FARM 24.0 MILES SSW GAMMA SCAN (GELI)

PB-214

.3011 2.7895 01/18/06 620262 6.8123 3.0062 03/15/06 621346 2.8392 2.3218 03/29/06 621782 2.9792 2.1861 04/11/06 622018

.0886 2.5608 04/26/06 622351 11.5427 2.8747 06/21/06 623481 4.2321 2.9011 07/19/06 624040 5.1468 2.7800 08/02/06 624324

.9844 2.1266 08/16/06 624614

.1936 2.2476 08/30/06 624845 6.3106 4.1994 09/27/06 625375 7.1657 3.9779 10/11/06 625647

.3617 2.9411 10/25/06 625921 1.8711 2.5297 11/07/06 626272 4.9065 2.4517 11/21/06 626520 4.0060 4.2187 12/19/06 627020 TL-208

.6964 1.4403 08/16/06 624614 SR 89

.7470 .7779 03/01/06 621086 1.2784 1.2272 06/07/06 623189

.4142 1.2069 08/16/06 624614 1.1836 .8939 12/19/06 627020 SR 90

.1413 .4763 03/01/06 621086

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WA-ITS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2263 E. HOUSLEY FARM 24.0 MILES SSW SR 90

.1230 .7707 06/07/06 623189

.7157 .7737 08/16/06 624614

.1085 .5941 12/19/06 627020 3115 LAYMAN FARM 1.3 MILES SSW IODINE-131

.0567 .0591 01/03/06 620083

- .0258 .0773 01/17/06 620280

- .0224 .0671 02/01/06 620601

.0364 .0516 02/15/06 620822

.0070 .0451 03/01/06 621104

- .0105 .0331 03/15/06 621364

- .0115 .0364 03/29/06 621800

.0316 .0527 04/12/06 622036

.0108 .0405 04/26/06 622369

.0086 .0552 05/09/06 622664

.0570 .0538 05/24/06 622973

.0616 .0581 06/07/06 623207

- .0116 .0367 06/21/06 623499

- .0124 .0392 07/05/06 623782

.0556 .0524 07/19/06 624058

.0512 .0534 08/02/06 624342

.0304 .0509 08/16/06 624632

.0512 .0534 08/30/06 624863

.0377 .0655 09/13/06 625152

- .0158 .0372 09/27/06 625393

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3115 LAYMAN FARM 1.3 MILES SSW IODINE-131

.0464 .0804 10/11/06 625666

.0365 .0517 10/25/06 625939

.0376 .0534 11/06/06 626290

.0335 .0475 11/20/06 626538

.0395 .0685 12/06/06 626830

.0649 .0783 12/19/06 627038 GAMMA SCAN (GELI)

AC-228 2.1095 3.3076 01/03/06 620083 3.3293 3.7588 04/26/06 622369 40 OO0 4.1838 4.1014 05/09/06 622664 5.2144 3.8836 08/02/06 624342 9.0121 4.6247 08/30/06 624863 4.3384 4.2050 09/27/06 625393 BI-214 16.2206 4.2248 01/03/06 620083 20.0608 4.3344 01/17/06 620280 13.0748 3.9294 02/01/06 620601 14.4428 3.6690 02/15/06 620822 1.6213 3.9205 03/29/06 621800 3.9816 2.9721 05/09/06 622664

.0396 4.2766 06/07/06 623207

.2359 2.3512 06/21/06 623499 3.0568 2.6448 07/05/06 623782 9.0102 2.9984 07/19/06 624058 10.9592 2.9782 08/30/06 624863

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L -.0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3115 LAYMAN FARM 1.3 MILES SSW GAMMA SCAN (GELI)

BI-214 18.8790 5.0019 09/27/06 625393 28.2828 5.2676 10/11/06 625666 53.9397 6.6894 10/25/06 625939 16.7787 3.9501 11/06/06 626290 8.6454 3.7092 11/20/06 626538 5.4119 3.4540 12/06/06 626830 7.4769 3.4791 12/19/06 627038 K-40 1420.6055 102.3401 01/03/06 620083 1454.0203 101.4550 01/17/06 620280 1334.9185 80.8587 02/01/06 620601 1359.1245 89.9934 02/15/06 620822 1334.3219 120.5661 03/01/06 621104 1542.2338 107.8045 03/15/06 621364 1510.4771 98.7592 03/29/06 621800 1154.6209 95.5748 04/12/06 622036 1299.1836 92.7310 04/26/06 622369 1379.2818 94.8278 05/09/06 622664 1387.9405 92.9009 05/24/06 622973 1390.8160 86.5738 06/07/06 623207 1328.5620 79.7492 06/21/06 623499 1300.6881 95.9162 07/05/06 623782 1399.9804 86.6086 07/19/06 624058 1437.0291 102.5911 08/02/06 624342 1329.6912 94.3379 08/16/06 624632 1342.4326 82.9788 08/30/06 624863

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3115 LAYMAN FARM 1.3 MILES SSW GAMMA SCAN (GELI)

K-40 1445.8650 93.9575 09/13/06 625152 1311.0352 95.2228 09/27/06 625393 1352.7213 91.6427 10/11/06 625666 1284.7632 112.5159 10/25/06 625939 1412.7802 99.1020 11/06/06 626290 1357.1098 90.4541 11/20/06 626538 1482.8414 111.9633 12/06/06 626830 1381.8679 79.1872 12/19/06 627038 PB-212 2.4438 2.1027 01/17/06 620280 3.0442 2.3601 07/19/06 624058 4.3908 1.8021 09/13/06 625152 4.1737 2.4611 11/06/06 626290

.5597 1.9181 11/20/06 626538 PB-214 11.7141 5.0862 01/03/06 620083 9.8303 3.5030 01/17/06 620280 7.1707 2.9453 02/01/06 620601 6.0780 4.2690 02/15/06 620822 3.1852 2.4633 03/01/06 621104 2.1372 2.7279 06/07/06 623207

.3031 1.9980 06/21/06 623499 1.8585 2.2388 07/19/06 624058

.2962 3.2928 08/30/06 624863 12.2281 3.3156 09/27/06 625393 14.2410 3.5735 10/11/06 625666

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3115 LAYMAN FARM 1.3 MILES SSW GAMMA SCAN (GELI)

PB-214 36.6448 7.3182 10/25/06 625939 13.7868 3.0227 11/06/06 626290 10.4899 4.5839 11/20/06 626538 4.6876 3.1362 12/06/06 626830 4.5956 2.5388 12/19/06 627038 TL-208 1.4820 1.2707 09/13/06 625152 1.8554 .9876 11/06/06 626290 SR 89

.4266 .7647 03/01/06 621104

.5941 1.0354 06/07/06 623207

.2919 .9409 08/16/06 624632

.6177 .8641 12/19/06 627038 SR 90

.5652 .4706 03/01/06 621104

.4701 .6760 06/07/06 623207

.2932 .6093 08/16/06 624632

.0265 .5719 12/19/06 627038 3116 MULLINS FARM 3.7 M. ESE IODINE-131

- .0211 .0632 01/04/06 620085

- .0130 .0410 01/18/06 620281

.0630 .0594 02/01/06 620603

.0232 .0771 02/15/06 620823

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3116 MULLINS FARM 3.7 M. ESE IODINE-131

.0348 .0494 03/01/06 621106

.0452 .0784 03/15/06 621365

- .0143 .0452 03/29/06 621802

.0001 .0752 04/12/06 622037

.0067 .0432 04/26/06 622371

- .0108 .0342 05/10/06 622665

.0302 .0505 05/24/06 622975

- .0192 .0452 06/07/06 623208

- .0162 .0382 06/21/06 623501

.0001 .0891 07/05/06 623784

.0079 .0505 07/19/06 624060

- .0109 .0344 08/02/06 624343

.0405 .0703 08/16/06 624634

.0408 .0707 08/30/06 624864

.0001 .0651 09/13/06 625154

.0409 .0579 09/27/06 625394

- .0136 .0430 10/11/06 625668

.0208 .0689 10/25/06 625940 GAMMA SCAN (GELI)

AC-228 7.2734 5.1654 05/10/06 622665 3.5717 5.0093 05/24/06 622975 9.3613 4.7379 07/19/06 624060 15.9842 6.1195 08/16/06 624634 BI-214 15.8847 4.6902 01/04/06 620085

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3116 MULLINS FARM 3.7 M. ESE GAMMA SCAN (GELI)

BI-214 11.0562 3.6053 01/18/06 620281 36.9978 6.7008 02/01/06 620603 6.0936 4.2229 02/15/06 620823 9.3055 3.8590 04/12/06 622037 3.8223 2.5905 05/10/06 622665 2.3481 3.0369 05/24/06 622975 1.8880 3.8877 06/07/06 623208 3.7978 3.5621 07/19/06 624060 2.9590 2.4380 08/16/06 624634 4.4928 3.1047 08/30/06 624864 9.1840 4.8244 09/27/06 625394 24.6025 4.6363 10/11/06 625668 35.2032 5.9697 10/25/06 625940 K-40 1451.8266 98.1600 01/04/06 620085 1431.5588 92.2262 01/18/06 620281 1346.5888 103.6605 02/01/06 620603 1297.0938 102.4608 02/15/06 620823 1266.1391 88.6474 03/01/06 621106 1203.1531 106.1496 03/15/06 621365 1286.8391 91.7068 03/29/06 621802 1336.2530 104.1640 04/12/06 622037 1343.4700 116.7213 04/26/06 622371 1358.8765 93.5252 05/10/06 622665 1306.6305 94.4800 05/24/06 622975 1369.9434 89.8714 06/07/06 623208

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3116 MULLINS FARM 3.7 M. ESE GAMMA SCAN (GELI)

K-40 1292.6800 85.9368 06/21/06 623501 1327.6471 95.4610 07/05/06 623784 1399.1476 87.6677 07/19/06 624060 1340.4730 85.2650 08/02/06 624343 1395.2362 86.3407 08/16/06 624634 1531.2665 103.9379 08/30/06 624864 1409.4578 96.2023 09/13/06 625154 1346.0311 109.1702 09/27/06 625394 1221.9426 104.1783 10/11/06 625668 1406.1811 104.8099 10/25/06 625940 PB-212 2.8470 1.7840 01/18/06 620281 8.0156 2.3327 03/01/06 621106

.4255 2.3860 04/12/06 622037 1.3805 2.1194 05/24/06 622975 2.8285 2.4990 06/07/06 623208 7.3444 2.2918 08/16/06 624634

.6871 3.6744 09/27/06 625394 PB-214 6.4355 3.9651 01/04/06 620085 3.6106 3.0021 01/18/06 620281 25.3370 7.2374 02/01/06 620603 10.1111 3.3117 02/15/06 620823 1.4785 3.1370 03/15/06 621365 2.0660 3.0297 03/29/06 621802 2.0103 3.1910 06/07/06 623208

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3116 MULLINS FARM 3.7 M. ESE GAMMA SCAN (GELI)

PB-214 3.1489 2.0236 08/16/06 624634 13.9532 5.0834 09/27/06 625394 22.9691 5.0364 10/11/06 625668 23.1269 5.1913 10/25/06 625940 TL-208 1.5085 1.1344 01/18/06 620281

.2480 1.2090 05/24/06 622975 1.7503 1.1183 06/07/06 623208 1.4992 1.3932 08/30/06 624864 SR 89

- .3073 1.0375 03/01/06 621106

.0806 .8743 06/07/06 623208 1.1199 1.1773 08/16/06 624634 SR 90

.3937 .6406 03/01/06 621106 1.0347 .5875 06/07/06 623208

.0654 .7445 08/16/06 624634 3119 NORTON FARM 4.1 MILES ESE IODINE-131

.0113 .0422 01/04/06 620086

.0128 .0407 01/18/06 620282

.0114 .0426 02/01/06 620604

.0305 .0510 02/15/06 620824

.0314 .0524 03/01/06 621107

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3119 NORTON FARM 4.1 MILES ESE IODINE-131

.0150 .0560 03/15/06 621366

.0119 .0447 03/29/06 621803

.0561 .0529 04/12/06 622038

.0368 .0521 04/26/06 622372

.0315 .0526 05/10/06 622667

.0211 .0699 05/24/06 622976

.0111 .0415 06/06/06 623209

.0476 .0826 06/20/06 623502

.0358 .0508 07/05/06 623785

.0235 .0707 07/18/06 624061

.0423 .0734 08/02/06 624344

.0686 .0647 08/16/06 624635

.0112 .0420 08/30/06 624865

.0393 .0682 09/13/06 625155

.0564 .0588 09/27/06 625395

.0375 .0531 10/11/06 625669

.0299 .0500 10/25/06 625941

.0076 .0489 11/06/06 626293

.0179 .0421 11/20/06 626540

.0075 .0481 12/05/06 626833

.0363 .0514 12/18/06 627039 GAMMA SCAN (GELI)

AC-228 1.4707 3.0473 01/18/06 620282 10.1000 4.3597 02/01/06 620604 5.2374 4.0503 03/29/06 621803

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3119 NORTON FARM 4.1 MILES ESE GAMMA SCAN (GELI)

AC-228 8.0540 4.4042 04/12/06 622038 5.3373 3.5468 08/30/06 624865 2.3671 4.2190 11/20/06 626540 BI-214 8.2125 2.7416 01/04/06 620086 4.0373 3.0154 01/18/06 620282 39.9395 5.3508 02/01/06 620604 4.5758 3.6966 02/15/06 620824

.0856 3.0727 03/15/06 621366 3.7219 3.3163 03/29/06 621803 6.1502 3.4070 04/12/06 622038 1.6013 3.0666 05/10/06 622667 5.6228 2.8354 05/24/06 622976

.6048 2.9514 06/20/06 623502

.4756 2.2545 07/05/06 623785 9.1627 4.6870 07/18/06 624061 1.4360 2.7774 08/02/06 624344 3.9108 2.9191 08/16/06 624635 3.8005 3.7023 08/30/06 624865 24.9098 4.6685 09/27/06 625395 26.1791 4.6131 10/11/06 625669 33.2781 5.3770 10/25/06 625941 15.3661 4.4144 11/06/06 626293 7.2901 2.8455 11/20/06 626540 2.9051 3.2356 12/05/06 626833 14.4659 5.1730 12/18/06 627039

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3119 NORTON FARM 4.1 MILES ESE GAMMA SCAN (GELI)

K-40 1303.8042 85.7789 01/04/06 620086 1175.4988 83.4696 01/18/06 620282 1365.8225 83.3611 02/01/06 620604 1391.5154 101.8738 02/15/06 620824 1498.2603 85.3579 03/01/06 621107 1434.3838 95.5644 03/15/06 621366 1357.4013 90.8546 03/29/06 621803 1454.8612 126.2095 04/12/06 622038 1237.1928 78.5250 04/26/06 622372 1363.7485 80.0370 05/10/06 622667 90 1265.0854 80.4330 05/24/06 622976 1306.0365 92.1767 06/06/06 623209 1336.0218 88.5688 06/20/06 623502 1220.3737 95.9524 07/05/06 623785 1411.2470 102.1876 07/18/06 624061 1311.1884 83.9303 08/02/06 624344 1461.7011 95.7625 08/16/06 624635 1397.3813 94.9148 08/30/06 624865 1101.7775 119.9732 09/13/06 625155-1281.5785 94.7377 09/27/06 625395 1346.7588 89.7520 10/11/06 625669 1251.7071 88.1826 10/25/06 625941 1295.5545 96.5567 11/06/06 626293 1272.2636 100.5771 11/20/06 626540 1324.4164 97.3579 12/05/06 626833 1290.1067 89.9677 12/18/06 627039

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activit Error Date Collected Lab Number 3119 NORTON FARM 4.1 MILES ESE GAMMA SCAN (GELI)

PB-212 4.5411 1.9126 04/12/06 622038 6.6094 3.0807 05/24/06 622976 1.7599 2.8723 07/18/06 624061 5.4136 2.8865 11/06/06 626293

.9512 2.7555 11/20/06 626540 PB-214 6.2529 2.9376 01/04/06 620086 6.7816 3.8862 01/18/06 620282 20.3914 3.1755 02/01/06 620604

.4749 2.9707 02/15/06 620824

.7808 2.9575 03/01/06 621107

.8874 2.8277 03/15/06 621366 5.8335 2.5906 04/12/06 622038 1.7576 2.0858 05/10/06 622667 2.2088 3.0597 05/24/06 622976 1.5205 2.9274 08/02/06 624344

.8981 3.3672 08/16/06 624635 12.2060 2.9508 09/27/06 625395 16.9287 3.1780 10/11/06 625669 16.7149 3.0384 10/25/06 625941 12.9265 3.9961 11/06/06 626293

.3840 2.6314 11/20/06 626540 3.7492 2.7600 12/05/06 626833 3.1646 3.7797 12/18/06 627039 TL-208 2.1969 1.5498 02/01/06 620604

Tennessee Valley Authority Table 4 RADIOACTIVITY IN MILK WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3119 NORTON FARM 4.1 MILES ESE SR 89

.6426 1.0493 03/01/06 621107

- .4647 .8076 06/06/06 623209

- .2698 .9298 08/16/06 624635

- .2454 .9857 12/18/06 627039 SR 90

.5860 .6497 03/01/06 621107

.6635 .5339 06/06/06 623209

.7316 .5579 08/16/06 624635

.7030 .6494 12/18/06 627039

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

AC-228

.7118 .0640 07/04/06 623724

.7887 .0543 07/11/06 623771 BE-7

.2291 .0286 07/04/06 623724 BI-212

.5963 .0750 07/04/06 623724

.9162 .0961 07/11/06 623771 BI-214

.7304 .0391 07/04/06 623724

.9482 .0524 07/11/06 623771 CS-137

.1361 .0113 07/04/06 623724

.1284 .0114 07/11/06 623771 K-40 2.7789 .2156 07/04/06 623724 5.5724 .2859 07/11/06 623771 PB-212

.6021 .0352 07/04/06 623724

.8118 .0439 07/11/06 623771 PB-214

.8412 .0424 07/04/06 623724

.9857 .0591 07/11/06 623771 RA-224

.7575 .1813 07/04/06 623724

.9155 .1570 07/11/06 623771 RA-226

.7304 .0391 07/04/06 623724

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 RM-2 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

RA-226

.9482 .0524 07/11/06 623771 TL-208

.2145 .0144 07/04/06 623724

.2971 .0177 07/11/06 623771 SR 89

.9460 .5960 07/04/06 623724 SR 90

.0264 .0341 07/04/06 623724 3101 LM1 0.5 MILES SSW GAMMA SCAN (GELI)

AC-228 1.1467 .0911 07/11/06 623761 BE-7

.1170 .0332 07/11/06 623761 BI-212 1.3018 .1356 07/11/06 623761 BI-214

.8500 .0512 07/11/06 623761 CS-137

.0942 .0105 07/11/06" 623761 K-40 13.8485 .6798 07/11/06 623761 PB-212 1.1018 .0607 07/11/06 623761 PB-214

.8963 .0555 07/11/06 623761

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activijy Error Date Collected Lab Number 3101 LM1 0.5 MILES SSW GAMMA SCAN (GELI)

RA-224 1.5453 .2958 07/11/06 623761 RA-226

.8500 .0512 07/11/06 623761 TL-208

.3655 .0238 07/11/06 623761 SR 89

.0735 .7850 07/11/06 623761 SR 90

.0588 .0715 07/11/06 623761 LM2 0.5 MILES N GAMMA SCAN (GELI)

AC-228 1.1701 .0767 07/11/06 623766 BI-212 1.2113 .1295 07/11/06 623766 BI-214

.9520 .0516 07/11/06 623766 CS-137

.3126 .0217 07/11/06 623766 K-40 14.0021 .6152 07/11/06 623766 PB-212 1.0921 .0589 07/11/06 623766 PB-214 1.0564 .0494 07/11/06 623766 RA-226

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3102 LM2 0.5 MILES N GAMMA SCAN (GELI)

RA-226

.9520 .0516 07/11/06 623766 TL-208

.3576 .0198 07/11/06 623766 SR 89

- .1470 .7370 07/11/06 623766 SR 90

.0547 .0450 07/11/06 623766 3106 PM2 SPRING CITY 7.0 MILES NW GAMMA SCAN (GELI)

AC-228

.9440 .0629 07/11/06 623770 BI-212

.8817 .0941 07/11/06 623770 BI-214

.6062 .0296 07/11/06 623770 CS-1 37

.4882 .0271 07/11/06 623770 K-40 10.8665 .5681 07/11/06 623770 PB-212

.8273 .0468 07/11/06 623770 PB-214

.6569 .0364 07/11/06 623770 RA-226

.6062 .0296 07/11/06 623770 TL-208

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activijy Lab Number Error Date Collected.

3106 PM2 SPRING CITY 7.0 MILES NW GAMMA SCAN (GELI)

TL-208

.2706 .0166 07/11/06 623770 SR 89 1.1800 .8960 07/11/06 623770 SR 90

.0647 .0514 07/11/06 623770 3107 PM3 10.4 MILES NNE GAMMA SCAN (GELI)

AC-228

.9260 .0639 07/11/06 623774 BE-7

.1804 .0380 07/11/06 623774 BI-212

.9726 .0877 07/11/06 623774 BI-214

.8118 .0392 07/11/06 623774 CS-137

.2058 .0178 07/11/06 623774 K-40 4.1832 .2588 07/11/06 623774 PB-212

.9271 .0511 07/11/06 623774 PB-214

.8782 .0507 07/11/06 623774 RA-224 1.0913 .1630 07/11/06 623774 RA-226

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQIG (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Date Collected Lab Number Error 3107 PM3 10.4 MILES NNE GAMMA SCAN (GELI)

RA-226

.8118 .0392 07/11/06 623774 TL-208

.2625 .1747 07/11/06 623774 SR 89

.5480 .6240 07/11/06 623774 SR 90

.0318 .0367 07/11/06 623774

,3108 PM4 7.6 MILES NE/ENE GAMMA SCAN (GELI)

AC-228 1.2328 .0825 07/12/06 623777 BI-212 1.2569 .1339 07/12/06 623777 BI-214

.9104 .0568 07/12/06 623777 CS-137.

.0507 .0087 07/12/06 623777 K-40 12.2215 .6536 07/12/06 623777 PB-212 1.1671 .0743 07/12/06 623777 PB-214

.9627 .0544 07/12/06 623777 RA-226

.9104 .0568 07/12/06 623777 TL-208

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3108 PM4 7.6 MILES NE/ENE GAMMA SCAN (GELI)

TL-208

.3967 .0265 07/12/06 623777 SR 89

.0706 .7110 07/12/06 623777 SR 90

.0284 .0560 07/12/06 623777 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

AC-228 1.4033 .0755 07/12/06 623781 BE-7

.2472 .0506 07/12/06 623781 BI-212 1.5563 .1274 07/12/06 623781 BI-214

.9087 .0454 07/12/06 623781 CS-137

.0523 .0082 07/12/06 623781 K-40 12.9503 .6569 07/12/06 623781 PB-212 1.4731 .0699 07/12/06 623781 PB-214 1.0333 .051.9 07/12/06 623781 RA-224 1.6140 .1875 07/12/06 623781 RA-226

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3109 PM5 DECATUR 8.0 MILES S GAMMA SCAN (GELI)

RA-226

.9087 .0454 07/12/06 623781 TL-208

.4309 .0223 07/12/06 623781 SR 89

- .2180 .7650 07/12/06 623781 SR 90

.0192 .0439 07/12/06 623781 p203 LM3 1.9 MILES NNE GAMMA SCAN (GELI)

AC-228

.8669 .0799 07/11/06 623789 BI-212

.9821 .1719 07/11/06 623789 BI-214 1.1199 .0574 07/11/06 623789 CS-137 1.2626 .0612 07/11/06 623789 K-40 4.9155 .4449 07/11/06 623789 PB-212

.8828 .0478 07/11/06 623789 PB-214 1.2243 .0622 07/11/06 623789 RA-226 1.1199 .0574 07/11/06 623789 TL-208

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error , Date Collected Lab Number 3203 LM3 1.9 MILES NNE GAMMA SCAN (GELI)

TL-208

.2901 .0181 07/11/06 623789 SR 89

- .1140 .5460 07/11/06 623789 SR 90

.0232 .0328 07/11/06 623789 3204 LM-4 WB 0.9 MILES SE GAMMA SCAN (GELI)

AC-228 1.4365 .0997 07/12/06 623793 BI-212 1.4565 .1758 07/12/06 623793 BI-214 1.1089 .0641 07/12/06 623793 CS-137

.0757 .0130 07/12/06 623793 K-40 28.0277 1.3273 07/12/06 623793 PB-212 1.3974 .0852 07/12/06 623793 PB-214 1.1513 .0587 07/12/06 623793 RA-226 1.1089 .0641 07/12/06 623793 TL-208

.4870 .0368 07/12/06 623793

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3204 LM-4 WB 0.9 MILES SE SR 89

.3350 .7020 07/12/06 623793 SR 90

.0385 .0562 07/12/06 623793 3205 RM-3 WB 15 MILES NNW GAMMA SCAN (GELI)

AC-228

.5574 .0566 07/11/06 623797 BI-212

.5542 .0982 07/11/06 623797 BI-214

.5496 .0351 07/11/06 623797 CS-1 37

.5922 .0385 07/11/06 623797 K-40 4.4272 .3992 07/11/06 623797 PB-212

.3757 .0418 07/11/06 623797 PB-214

.5729 .0551 07/11/06 623797 RA-226

.5496 .0351 07/11/06 623797 TL-208

.1810 .0155 07/11/06 623797 SR 89

.1720 .5620 07/11/06 623797

Tennessee Valley Authority Table 5 RADIOACTIVITY IN SOIL WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3205 RM-3 WB 15 MILES NNW SR 90

.0143 .0491 07/11/06 623797

Tennessee Valley Authority Table 6 RADIOACTIVITY IN APPLES WATTS BAR NUCLEAR PLANT PCI/KG - 0.037 BQ/KG (WET WT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

BI-214 25.4094 9.2415 08/01/06 622462 K-40 1018.8206 114.1938 08/01/06 622462 PB-214 17.7243 9.3552 08/01/06 622462 3184 4.5 MILES N GAMMA SCAN (GELI)

BI-214 5.7906 9.3588 08/01/06 622503 K-40 k) 1041.2817 118.8960 08/01/06 622503 PB-214

.7867 7.9437 08/01/06 622503

Tennessee Valley Authority Table 7 RADIOACTIVITY IN CABBAGE WATTS BAR NUCLEAR PLANT PCI/KG - 0.037 BQ/KG (WET WT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activit Error Date Collected Lab Number 2116 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

BI-214 49.9499 13.1468 08/01/06 622453 K-40 1665.1116 159.4846 08/01/06 622453 PB-214 38.8512 9.2321 08/01/06 622453 3173 2.5 MILES NE GAMMA SCAN (GELI)

BI-214 24.5079 10.4954 05/30/06 622504 K-40 1968.1374 151.5734 05/30/06 622504 PB-214

.0821 5.5698 05/30/06 622504

Tennessee Valley Authority Table 8 RADIOACTIVITY IN CORN WATTS BAR NUCLEAR PLANT PCI/KG - 0.037 BQ/KG (WET WT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

BI-214 16.8867 6.1683 07/25/06 622457 K-40 2130.1669 176.7557 07/25/06 622457 PB-214 7.4456 5.9517 07/25/06 622457 3119 NORTON FARM 4.1 MILES ESE GAMMA SCAN (GELI)

BI-214 11.7243 6.9670 07/18/06 622500 K-40 2191.0111 156.4543 07/18/06 622500 PB-214 18.2757 6.0959 07/18/06 622500

Tennessee Valley Authority Table 9 RADIOACTIVITY IN GREEN BEANS WATTS BAR NUCLEAR PLANT PCI/KG - 0.037 BQ/KG (WET WT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide ActiviAy Error Date Collected Lab Number 2116 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

BI-214 25.2224 9.8197 07/11/06 622460 K-40 2796.2089 209.7769 07/11/06 622460 PB-214 40.0211 12.0355 07/11/06 622460 3173 2.5 MILES NE GAMMA SCAN (GELI)

BI-214 7.5371 6.1101 07/11/06 622501 K-40 1822.3306 201.2296 07/11/06 622501 PB-214 5.1603 5.4673 07/11/06 622501

Tennessee Valley Authority Table 10 RADIOACTIVITY IN POTATOES WATTS BAR NUCLEAR PLANT PCI/KG - 0.037 BQ/KG (WET WT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

BI-214 9.4635 11.0876 07/11/06 622454 K-40 3537.9281 227.9785 07/11/06 622454 PB-212 8.0154 4.1533 07/11/06 622454 PB-214 13.2011 7.1898 07/11/06 622454

Tennessee Valley Authority Table 11 RADIOACTIVITY IN TOMATOES WATTS BAR NUCLEAR PLANT PCI/KG - 0.037 BQ/KG (WET WT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 DAYTON TN 15.0 MILES SW GAMMA SCAN (GELI)

BI-214 13.6861 7.9568 07/18/06 622461 K-40 1793.3513 148.8792 07/18/06 622461 PB-214 13.7462 8.1302 07/18/06 622461 3173 2.5 MILES NE GAMMA SCAN (GELI)

BI-214 9.6080 6.6126 07/11/06 622502 K-40

-23 2768.7937 206.7388 07/11/06 622502 PB-214

.5869 5.7152 07/11/06 622502

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3133 TRM 529.3 GROSS BETA 1.9924 .6730 01/03/06 620087 1.8184 .6618 01/31/06 620605 2.4410 .6957 02/28/06 621108 2.8263 .7141 03/28/06 621804 2.7532 .7067 04/25/06 622373 2.8853 .7176 05/23/06 622977 2.7481 .7294 06/20/06 623503 2.7986 .7184 07/18/06 624063 2.6400 .7126 08/15/06 624636 00 2.8397 .7293 09/12/06 625156 3.2481 .7408 10/10/06 625670 2.6895 .7142 11/06/06 626294 2.4450 .6973 12/05/06 626834 GAMMA SCAN (GELI)

AC-228 3.8116 3.8871 01/31/06 620605 11.5784 5.0511 02/28/06 621108

.4083 3.8260 03/28/06 621804 1.0945 3.2731 05/23/06 622977 15.2693 4.8274 08/15/06 624636

.8031 3.7847 11/06/06 626294 4.7145 4.1940 12/05/06 626834 BI-214 6.8755 2.7142 01/03/06 620087 3.2686 3.2079 01/31/06 620605 2.6618 2.9218 02/28/06 621108

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3133 TRM 529.3 GAMMA SCAN (GELI)

BI-214 1.1931 3.2818 03/28/06 621804 4.9669 4.1186 04/25/06 622373 1.7442 2.4069 05/23/06 622977 5.9990 2.8888 07/18/06 624063 3.7239 2.9437 08/15/06 624636 4.8101 2.8985 09/12/06 625156 55.0728 6.6155 10/10/06 625670 14.0286 3.6303 11/06/06 626294 9.0745 3.3404 12/05/06 626834 K-40 4.3774 22.4090 01/03/06 620087 5.5316 14.3171 02/28/06 621108 20.9867 22.6968 03/28/06 621804 53.1978 18.4286 04/25/06 622373 37.8033 21.0162 06/20/06 623503 17.8863 21.8703 07/18/06 624063 52.3446 20.7579 08/15/06 624636 51.4286 23.0341 09/12/06 625156 19.2400 18.8352 10/10/06 625670 4.9588 22.0672 11/06/06 626294 1.1862 17.1549 12/05/06 626834 PB-212 4.1060 2.2880 04/25/06 622373 1.5007 2.3897 05/23/06 622977 2.3871 1.9478 06/20/06 623503

.0651 1.8462 07/18/06 624063

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3133 TRM 529.3 GAMMA SCAN (GELI)

PB-212 7.6964 2.1748 08/15/06 624636 6.5534 2.6159 09/12/06 625156

.4378 1.7833 11/06/06 626294 PB-214 6.7129 2.4432 01/03/06 620087 4.0118 2.5308 01/31/06 620605 1.4156 2.2653 03/28/06 621804 2.9613 2.5882 04/25/06 622373 2.0050 2.8121 05/23/06 622977 4.5699 2.4732 06/20/06 623503 3.4062 3.4691 07/18/06 624063 4.2903 3.1918 08/15/06 624636 9.7727 3.3492 09/12/06 625156 36.1775 4.6971 10/10/06 625670

.10.4789 3.2091 11/06/06 626294 4.4656 3.0782 12/05/06 626834 TL-208

.8332 1.3779 01/31/06 620605

.4724 1.1734 03/28/06 621804 1.9745 1.2039 08/15/06 624636 2.8223 1.4177 09/12/06 625156

.2632 1.1916 11/06/06 626294 TRITIUM 110.3141 65.6854 01/03/06 620087 107.4683 53.8646 01/31/06 620605

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3133 TRM 529.3 TRITIUM

- 41.0615 64.6714 02/28/06 621108 128.5509 89.3877 03/28/06 621804

- 59.3351 66.6974 04/25/06 622373 25.0726 81.0153 05/23/06 622977 20.6611 84.1049 06/20/06 623503

- 21.5436 83.1712 07/18/06 624063 109.4130 82.3833 08/15/06 624636 70.3574 82.9734 09/12/06 625156 19.4204 81.0753 10/10/06 625670

- 59.1877 82.9486 11/06/06 626294

- 20.5398 81.3848 12/05/06 626834 3134 TRM 517:9 GROSS BETA 2.3533 .6974 01/03/06 620089 2.2517 .6808 01/31/06 620607 2.8270 .7147 02/28/06 621110 2.0857 .6878 03/28/06 621806 2.3829 .6921 04/25/06 622375 3.9856 .7949 05/23/06 622979 2.5404 .7108 06/20/06 623505 3.3251 .7683 07/18/06 624065 2.4356 .7218 08/15/06 624638 3.6798 .7682 09/12/06 625158 3.5583 .7607 10/10/06 625672 2.9981 .7454 11/06/06 626296

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3134 TRM 517.9 GROSS BETA 2.5431 .7116 12/05/06 626836 GAMMA SCAN (GELI)

AC-228 13.5978 5.7291 01/03/06 620089 8.8369 5.4759 01/31/06 620607 7.3769 5.0441 02/28/06 621110 4.9829 4.3398 04/25/06 622375 15.1941 6.6622 05/23/06 622979 10.3042 3.8271 07/18/06 624065 5.4900 3.8357 08/15/06 624638 BI-214 4.4790 3.1643 01/03/06 620089 5.1193 2.4840 01/31/06 620607 2.8529 2.6459 02/28/06 621110 8.8591 4.1915 03/28/06 621806 2.6942 2.8264 04/25/06 622375 11.7267 2.4794 05/23/06 622979 5.4428 3.4049 06/20/06 623505 7.8935 4.7147 07/18/06 624065 4.0831 2.7176 08/15/06 624638 3.9921 3.5557 09/12/06 625158 42.9658 5.1190 10/10/06 625672 15.4167 3.3028 11/06/06 626296 12.6252 4.0897 12/05/06 626836 K-40 32.7140 19.2270 01/03/06 620089

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activit Error Date Collected Lab Number 3134 TRM 517.9 GAMMA SCAN (GELI)

K-40 41.2099 18.6569 01/31/06 620607 50.9467 23.2930 03/28/06 621806 23.2283 19.8810 04/25/06 622375 26.8516 18.9558 05/23/06 622979 29.5080 17.8803 06/20/06 623505 66.3825 18.8979 07/18/06 624065 25.6158 15.8382 08/15/06 624638 2.0106 13.1544 11/06/06 626296 PB-212 7.4365 2.9466 01/03/06 620089 5.0993 1.9188 01/31/06 620607 3.0013 1.9319 03/28/06 621806 5.9535 2.7282 05/23/06 622979 5.8405 2.4716 06/20/06 623505

.7461 1.7176 07/18/06 624065 1.2346 2.5776 12/05/06 626836 PB-214 1.9497 2.4949 01/03/06 620089 2.8176 2.6596 01/31/06 620607 1.8913 2.1857 02/28/06 621110 5.8965 3.0541 03/28/06 621806 6.5809 4.1655 05/23/06 622979 5.9031 2.6132 06/20/06 623505 4.8972 2.3509 07/18/06 624065 4.6356 3.3922 09/12/06 625158 29.5540 5.0435 10/10/06 625672

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3134 TRM 517.9 GAMMA SCAN (GELI)

PB-214 8.4869 3.3695 11/06/06 626296 8.7582 4.8316 12/05/06 626836 TL-208 2.0459 1.0242 01/03/06 620089 3.1056 1.5914 01/31/06 620607

.7836 1.2358 02/28/06 621110 3.8822 1.2884 03/28/06 621806 2.3104 1.1427 06/20/06 623505 2.4703 1.2743 07/18/06 624065 4.2157 2.1563 10/10/06 625672 TRITIUM 15.3127 65.3325 01/03/06 620089 106.7996 54.6028 01/31/06 620607

- 9.7417 65.1557 02/28/06 621110 142.2102 89.6446 03/28/06 621806 100.1766 69.8192 04/25/06 622375 42.0338 81.2905 05/23/06 622979 230.4518 88.1035 06/20/06 623505 588.0648 97.0029 07/18/06 624065 203.9411 84.2393 08/15/06 624638 110.0276 83.6760 09/12/06 625158 86.6453 82.2108 10/10/06 625672 59.9567 84.7707 11/06/06 626296 22.8221 82.0596 12/05/06 626836

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3135 TRM 523.1 GROSS BETA 2.1986 .6937 01/03/06 620090 1.6430 .6698 01/31/06 620608 2.7747 .7120 02/28/06 621111 2.6639 .7069 03/28/06 621807 2.2951 .6800 04/25/06- 622376 2.7192 .7102 05/23/06 622980 2.2371 .7060 06/20/06 623506 3.4226 .7500 07/18/06 624066 3.4817 .8170 08/15/06 624639 3.5337 .7654 09/12/06 625159 3.0880 .7343 10/10/06 625673 2.1144 .6814 11/06/06 626297 2.7772 .7131 12/05/06 626837 GAMMA SCAN (GELI)

AC-228 6.2708 5.1581 03/28/06 621807 6.2779 3.4092 04/25/06 622376 3.4920 4.0316 06/20/06 623506 4.2382 3.4172 08/15/06 624639 1.6048 2.8216 10/10/06 625673 BI-214 7.9875 3.2065 01/03/06 620090 12.5916 3.2898 01/31/06 620608 2.5025 2.4738 03/28/06 621807 3.1198 3.0255 04/25/06 622376 3.7873 3.3478 05/23/06 622980

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3135 TRM 523.1 GAMMA SCAN (GELI)

BI-214 5.3435 4.5447 06/20/06 623506 4.5986 2.5288 08/15/06 624639 2 5.3056 5.7220 09/12/06 625159 1 9.0306 4.1422 10/10/06 625673 2 7.4258 5.9885 11/06/06 626297

.4697 2.1894 12/05/06 626837 K-40 2.4530 16.2552 01/03/06 620090 6.7006 13.7021 01/31/06 620608 9.9038 13.5144 03/28/06 621807 2, 4.4839 18.3293 04/25/06 622376 8.5211 16.0211 10/10/06 625673 NO ACTIVITY DETECTED

.0000 .0000 02/28/06 621111

.0000 .0000 07/18/06 624066.

PB-214 1.2436 2.5346 01/03/06 620090 6.2612 3.2034 01/31/06 620608

.7783 2.0762 04/25/06 622376 3.6962 3.0137 05/23/06 622980 4.2936 3.0941 06/20/06 623506 8.3837 3.4181 09/12/06 625159 7.6473 2.3827 10/10/06 625673 26.6633 5.0436 11/06/06 626297 2.7937 2.5376 12/05/06 626837

Tennessee Valley Authority Table 12 RADIOACTIVITY IN CONTIN. SURFACE WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3135 TRM 523.1 GAMMA SCAN (GELI)

TL-208

.6428 1.4208 12/05/06 626837 TRITIUM 65.8925 64.9757 01/03/06 620090 82.3180 53.8296 01/31/06 620608

- 54.2223 63.9174 02/28/06 621111 95.6099 88.7883 03/28/06 621807 113.6331 84.1438 04/25/06 622376 19.9107 80.9336 05/23/06 622980 192.3074 87.2954 06/20/06 623506 98.9414 85.2142 07/18/06 624066 203.9405 84.2390 08/15/06 624639 172.1515 84.8575 09/12/06 625159

- 47.8042 80.0667 10/10/06 625673

.72.2553 84.9802 11/06/06 626297 88.2453 83.1742 12/05/06 626837

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Anatysis Nuclide Activity Error Date Collected Lab Number 2116 DAYTON TN TRM 503.8 GROSS BETA 2.0510 .6767 01/17/06 620237 3.3112 .7262 02/14/06 620779 2.5299 .6946 03/14/06 621320 1.9307 .6684 04/11/06 621993 2.9140 .7139 05/09/06 622622 2.8508 .7199 06/06/06 623165 2.3791 .7192 07/04/06 623722 2.9570 .7242 08/01/06 624298 2.1697 .6996 08/29/06 624819 00 3.5324 .7650 09/26/06 625350 2.6106 .7049 10/24/06 625896 2.6091 .7045 11/20/06 626495 2.1497 .6925 12/18/06 626995 GAMMA SCAN (GELI)

AC-228 4.5231 3.3222 01/17/06 620237 7.9420 4.6601 07/04/06 623722 6.3055 4.3310 08/01/06 624298 19.4990 6.2194 08/29/06 624819 5.8863 4.4866 10/24/06 625896 BI-214 3.4961 3.3060 01/17/06 620237 11.4471 3.8013 02/14/06 620779 8.3492 3.2243 03/14/06 621320 4.6474 3.0059 04/11/06 621993 6.7453 3.0919 05/09/06 622622

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 DAYTON TN TRM 503.8 GAMMA SCAN (GELI)

BI-214 14.6189 5.3743 06/06/06 623165 2.6425 2.7395 07/04/06 623722 10.0715 3.1586 08/01/06 624298 24.4889 6.1094 08/29/06 624819 21.4483 4.4203 09/26/06 625350 27.5287 4.5692 10/24/06 625896 14.6044 3.4042 11/20/06 626495 8.7393 2.7734 12/18/06 626995 K-40 40.4418 17.3668 01/17/06 620237 22.9789 25.8550 02/14/06 620779 46.8824 22.8974 04/11/06 621993 63.0874 19.2285 06/06/06 623165 15.5949 20.2978 07/04/06 623722 3.4031 21.1520 08/01/06 624298 15.4959 23.1947 08/29/06 624819 34.1091 22.0471 09/26/06 625350 18.2643 19.4712 10/24/06 625896 PB-212 4.0281 1.9323 01/17/06 620237 1.1903 2.4078 02/14/06 620779

.0234 1.9766 03/14/06 621320 6.2525 2.4311 04/11/06 621993 2.9849 2.5021 05/09/06 622622 5.1721 1.8979 06/06/06 623165

.4101 1.8688 08/29/06 624819

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 DAYTON TN TRM 503.8 GAMMA SCAN (GELI)

PB-212 1.3412 2.4024 09/26/06 625350 1.3787 1.5572 10/24/06 625896 2.5481 2.8537 11/20/06 626495 PB-214

.4626 2.4874 01/17/06 620237 5.0326 2.6245 02/14/06 620779 3.8461 2.5930 04/11/06 621993 1.3995 2.4895 05/09/06 622622 7.5720 3.3642 06/06/06 623165 2.2599 2.1733 08/01/06 624298 11.5823 4.5185 08/29/06 624819 18.5709 5.8521 09/26/06 625350 9.0416 2.4307 10/24/06 625896 7.1462 2.5607 11/20/06 626495 12.1334 5.0776 12/18/06 626995 TL-208 1.7955 1.3547 06/06/06 623165 1.9254 1.6593 07/04/06 623722 3.4842 2.8664 10/24/06 625896 1.3845 1.3845 11/20/06 626495 TRITIUM 147.0178 66.1867 01/17/06 620237 5.9556 64.5958 02/14/06 620779 13.9219 64.9654 03/14/06 621320 12.5796 81.9921 03/14/06 621376

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2116 DAYTON TN TRM 503.8 TRITIUM 272.5896 92.1288 04/11/06 621993 219.4753 85.2190 05/09/06 622622 33.2325 69.0160 06/06/06 623165

- 99.9449 82.4831 06/06/06 623220 816.7246 104.0559 07/04/06 623722 151.2799 86.0411 08/01/06 624298 202.9165 85.3846 08/29/06 624819 394.4485 90.5520 08/29/06 624875 179.5179 86.2960 09/26/06 625350 133.1914 85.7170 10/24/06 625896

- 22.2441 83.2938 11/20/06 626495 108.2770 82.3956 12/18/06 626995 5.3377 82.6805 12/18/06 627049 2140 CF INDUSTRIES TRM 473.0 GROSS BETA 2.3007 .6687 01/18/06 620239 1.5935 .6496 02/15/06 620781 1.7108 .6580 03/15/06 621322 2.4792 .6938 04/12/06 621996 2.2234 .6865 05/10/06 622624 2.3128 .6855 06/07/06 623167 2.3164 .7153 07/05/06 623726 1.9183 .6638 08/02/06 624300 2.5416 .7116 08/30/06 624821 2.7021 .7166 09/27/06 625352

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2140 CF INDUSTRIES TRM 473.0 GROSS BETA 2.4100 .6870 10/25/06 625898 2.7799 .7136 11/21/06 626497 1.9594 .6947 12/19/06 626997 GAMMA SCAN (GELI)

AC-228 1.5476 3.1806 01/18/06 620239 16.6452 5.7086 03/15/06 621322 5.3476 3.2315 08/02/06 624300 9.3541

• 4.7753 09/27/06 625352 BI-214 3.9571 2.6802 01/18/06 620239 14.7409 3.0215 02/15/06 620781 8.3050 3.4127 03/15/06 621322 1.8513 3.2537 04/12/06 621996 9.0566 2.7902 05/10/06 622624 2.4099 3.3146 06/07/06 623167 7.6408 3.4960 07/05/06 623726 4.7940 2.9284 08/02/06 624300 16.0389 3.1896 08/30/06 624821 17.3112 3.8783 09/27/06 625352 32.2297 5.0284 10/25/06 625898 42.9460 5.5293 11/21/06 626497 19.8459 4.6368 12/19/06 626997 K-40 3.8264 14.1726 01/18/06 620239 87.1945 25.1894 02/15/06 620781

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2140 CF INDUSTRIES TRM 473.0 GAMMA SCAN (GELI)

K-40 37.4274 22.4535 03/15/06 621322 66.2600 20.2919 05/10/06 622624 35.4434 18.6844 07/05/06 623726 64.8442 22.4943 08/02/06 624300 49.3797 19.5884 08/30/06 624821 38.7986 20.6933 09/27/06 625352 29.7954 15.9121 10/25/06 625898 51.8098 25.4369 11/21/06 626497 PB-212 3.2883 1.6112 02/15/06 620781 3.5112 1.6407 03/15/06 621322 6.3357 2.4896 07/05/06 623726 1.8782 1.4940 08/02/06 624300 6.3995 1.8117 08/30/06 624821 5.3745 2.4947 09/27/06 625352 3.6269 2.1714 10/25/06 625898 2.2117 1.8832 11/21/06 626497 PB-214 14.0385 2.8442 02/15/06 620781 4.3935 2.4719 03/15/06 621322 3.7995 2.1425 05/10/06 622624 6.6061 3.1655 07/05/06 623726 4.4370 2.8733 08/02/06 624300 7.6050 3.1122 08/30/06 624821 8.6917 3.3458 09/27/06 625352 20.5644 3.6551 10/25/06 625898

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2140 CF INDUSTRIES TRM 473.0 GAMMA SCAN (GELI)

PB-214 21.0610 3.2152 11/21/06 626497 13.3705 3.0887 12/19/06 626997 TL-208 2.6544 1.1766 02/15/06 620781 1.6762 1.1385 03/15/06 621322 1.5150 1.0763 05/10/06 622624 3.0645 1.0951 07/05/06 623726 3.1024 1.1757 09/27/06 625352 2.7408 1.5940 10/25/06 625898 A TRITIUM 189.0468 72.2013 01/18/06 620239 199.4335 67.2830 02/15/06 620781 146.5225 66.9959 03/15/06 621322 96.9223 83.3782 03/15/06 621377 189.7409 72.1316 04/12/06 621996 196.7577 86.1295 05/10/06 622624 198.5895 72.6925 06/07/06 623167 205.1186 87.4426 06/07/06 623221 440.8075 92.9525 07/05/06 623726 472.0730 93.5736 08/02/06 624300 329.5886 88.1849 08/30/06 624821 363.7050 89.7886 08/30/06 624876 219.4577 87.0928 09/27/06 625352 150.4748 86.0281 10/25/06 625898 168.7238 86.5710 11/21/06 626497

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2140 CF INDUSTRIES TRM 473.0 TRITIUM 130.9718 82.8125 12/19/06 626997 5.3369 82.8317 12/19/06 627050 3133 TRM 529.3 GROSS BETA 1.9924 .6730 01/03/06 620087 1.8184 .6618 01/31/06 620605 2.4410 .6957 02/28/06 621108 2.8263 .7141 03/28/06 621804 2.7532 .7067 04/25/06 622373 LI1 2.8853 .7176 05/23/06 622977 2.7481 .7294 06/20/06 623503 2.7986 .7184 07/18/06 624063 2.6400 .7126 08/15/06 624636 2.8397 .7293 09/12/06 625156 3.2481 .7408 10/10/06 625670 2.6895 .7142 11/06/06 626294 2.4450 .6973 12/05/06 626834 GAMMA SCAN (GELI)

AC-228 3.8116 3.8871 01/31/06 620605 11.5784 5.0511 02/28/06 621108

.4083 3.8260 03/28/06 621804 1.0945 3.2731 05/23/06 622977 15.2693 4.8274 08/15/06 624636

.8031 3.7847 11/06/06 626294 4.7145 4.1940 12/05/06 626834

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activit Error Date Collected Lab Number 3133 TRM 529.3 GAMMA SCAN (GELI)

BI-214 6.8755 2.7142 01/03/06 620087 3.2686 3.2079 01/31/06 620605 2.6618 2.9218 02/28/06 621108 1.1931 3.2818 03/28/06 621804 4.9669 4.1186 04/25/06 622373 1.7442 2.4069 05/23/06 622977 5.9990 2.8888 07/18/06 624063 3.7239 2.9437 08/15/06 624636 4.8101 2.8985 09/12/06 625156 I55.0728 6.6155 10/10/06 625670 14.0286 3.6303 11/06/06 626294 9.0745 3.3404 12/05/06 626834 K-40 4.3774 22.4090 01/03/06 620087 5.5316 14.3171 02/28/06 621108 20.9867 22.6968 03/28/06 621804 53.1978 18.4286 04/25/06 622373 37.8033 21.0162 06/20/06 623503 17.8863 21.8703 07/18/06 624063 52.3446 20.7579 08/15/06 624636 51.4286 23.0341 09/12/06 625156 19.2400 18.8352 10/10/06 625670 4.9588 22.0672 11/06/06 626294 1.1862 17.1549 12/05/06 626834 PB-212 4.1060 2.2880 04/25/06 622373

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3133 TRM 529.3 GAMMA SCAN (GELI)

PB-212 1.5007 2.3897 05/23/06 622977 2.3871 1.9478 06/20/06 623503

.0651 1.8462 07/18/06 624063 7.6964 2.1748 08/15/06 624636 6.5534 2.6159 09/12/06 625156

.4378 1.7833 11/06/06 626294 PB-214 6.7129 2.4432 01/03/06 620087 4.0118 2.5308 01/31/06 620605 1.4156 2.2653 03/28/06 621804 2.9613 2.5882 04/25/06 622373 2.0050 2.8121 05/23/06 622977 4.5699 2.4732 06/20/06 623503 3.4062 3.4691 07/18/06 624063 4.2903 3.1918 08/15/06 624636 9.7727 3.3492 09/12/06 625156 36.1775 4.6971 10/10/06 625670 10.4789 3.2091 11/06/06 626294 4.4656 3.0782 12/05/06 626834 TL-208

.8332 1.3779 01/31/06 620605

.4724 1.1734 03/28/06 621804 1.9745 1.2039 08/15/06 624636 2.8223 1.4177 09/12/06 625156

.2632 1.1916 11/06/06 626294

Tennessee Valley Authority Table 13 RADIOACTIVITY IN CONTINUOUS PUBLIC WATER WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3133 TRM 529.3 TRITIUM 110.3141 65.6854 01/03/06 620087 107.4683 53.8646 01/31/06 620605 41.0615 64.6714 02/28/06 621108 128.5509 89.3877 03/28/06 621804

- 59.3351 66.6974 04/25/06 622373 25.0726 81.0153 05/23/06 622977 20.6611 84.1049 06/20/06 623503 21.5436 83.1712 07/18/06 624063 109.4130 82.3833 08/15/06 624636 70.3574 82.9734 09/12/06 625156 00 19.4204 81.0753 10/10/06 625670

- 59.1877 82.9486 11/06/06 626294

- 20.5398 81.3848 12/05/06 626834

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3121 WBN WELL #1 0.6 MILES S GROSS BETA 2.0620 .8056 01/24/06 620421 2.4704 .8346 02/21/06 620946 3.0643 .8905 03/21/06 621529 3.6332 .8769 04/18/06 622172 3.5721 .8751 05/16/06 622812 3.0049 .8569 06/13/06 623354 3.8839 .9105 07/11/06 623908 2.1844 .8167 08/08/06 624488 2.8741 .8196 09/05/06 625005 4.2320 .9776 10/03/06 625532 3.1863 .9256 10/31/06 626131 3.0193 .9519 11/28/06 626667 1.5195 .6395 12/26/06 627206 GAMMA SCAN (GELI)

AC-228 8.3390 5.6091 01/24/06 620421 9.7699 4.6129 02/21/06 620946 9.7348 5.0035 06/13/06 623354 9.3586 4.3914 10/03/06 625532 BI-214 17.0190 4.1248 01/24/06 620421 4.0909 3.2126 02/21/06 620946 15.3836 4.1562 03/21/06 621529 12.5284 2.4487 04/18/06 622172 12.0205 3.4544 05/16/06 622812 4.6039 3.1882 06/13/06 623354

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3121 WBN WELL #1 0.6 MILES S GAMMA SCAN (GELI)

BI-214 7.1865 3.5141 07/11/06 623908 11.7313 4.0092 08/08/06 624488 10.9037 4.9152 09/05/06 625005 14.4223 3.5804 10/03/06 625532 4.9562 3.8692 10/31/06 626131 7.3882 3.8704 11/28/06 626667 1.1498 3.5122 12/26/06 627206 K-40 6.3492 17.0198 02/21/06 620946 7.3125 14.3814 03/21/06 621529 34.0180 15.8031 09/05/06 625005 65.3310 22.0440 10/03/06 625532 11.3583 17.3988 12/26/06 627206 PB-212

.6745 1.6817 04/18/06 622172 4.1878 2.2375 09/05/06 625005 3.4159 1.7080 10/03/06 625532 PB-214 13.3592 3.6006 01/24/06 620421 8.7930 2.7411 03/21/06 621529 8.7666 2.8718 04/18/06 622172 9.5345 3.1865 05/16/06 622812 2.8424 5.6481 06/13/06 623354 6.0263 2.5076 08/08/06 624488 17.3064 3.9194 09/05/06 625005 9.4435 3.1700 10/03/06 625532

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3121 WBN WELL #1 0.6 MILES S GAMMA SCAN (GELI)

PB-214 13.8151 4.2592 10/31/06 626131 2.9633 3.5194 11/28/06 626667

.5266 2.7723 12/26/06 627206 TL-208

.5327 1.2119 02/21/06 620946

.4640 1.2903 03/21/06 621529

.6262 1.4100 05/16/06 622812 3.9887 1.1779 09/05/06 625005 TRITIUM 105.5328 67.3989 01/24/06 620421 190.4849 67.0490 02/21/06 620946 105.5581 67.5165 03/21/06 621529 220.1771 85.4916 04/18/06 622172 34.8671 81.9702 05/16/06 622812

.0000 68.2961 06/13/06 623354 116.8675 81.6290 07/11/06 623908 251.8414 85.3487 08/08/06 624488 149.8586 71.5967 09/05/06 625005 124.2785 85.0971 10/03/06 625532 227.0508 87.1079 10/31/06 626131 139.7127 83.4272 11/28/06 626667 144.3553 84.3922 12/26/06 627206 3125 WBN WELL #5 ONSITE N GROSS BETA 1.9325 .6564 01/24/06 620422

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3125 WBN WELL #5 ONSITE N GROSS BETA 2.4787 .7068 02/21/06 620947 2.3227 .7019 03/21/06 621530 1.5809 .6641 04/18/06 622173 2.0263 .6689 05/16/06 622813 3.1315 .7442 06/13/06 623355 2.2099 .6971 07/11/06 623909 2.4290 .7061 08/08/06 624489 3.5290 .8158 09/05/06 625006 2.7995 .7301 10/03/06 625533 2.3118 .6989 10/31/06 626132 3.0406 .7446 11/28/06 626668 1.7358 .6864 12/26/06 627207 GAMMA SCAN (GELI)

AC-228 3.1799 3.3730 02/21/06 620947 6.7896 4.2902 05/16/06 622813 4.1433 4.6384 08/08/06 624489 1.2616 3.5215 09/05/06 625006 7.9651 6.1643 12/26/06 627207 BI-214 8.4497 3.6035 01/24/06 620422 7.9499 2.5888 02/21/06 620947 11.7524 5.1909 03/21/06 621530 4.3266 3.5171 04/18/06 622173 12.2782 3.3417 05/16/06 622813 8.9154 2.7116 07/11/06 623909

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3125 WBN WELL #5 ONSITE N GAMMA SCAN (GELI)

BI-214 7.3479 4.4845 08/08/06 624489 7.4849 3.8144 09/05/06 625006 2.7439 2.7495 10/03/06 625533 10.8628 3.6538 10/31/06 626132 7.8281 4.2445 11/28/06 626668 7.2876 3.3638 12/26/06 627207 K-40 60.3134 24.5753 02/21/06 620947 47.1063 18.4394 04/18/06 622173 79.6467 22.3604 05/16/06 622813 22.0130 17.4593 06/13/06 623355 28.3404 16.4758 07/11/06 623909 5.7917 19.8674 08/08/06 624489 92.8484 19.6427 12/26/06 627207 PB-212 1.5767 2.1431 01/24/06 620422 3.2712 1.9708 02/21/06 620947 5.7427 2.8565 03/21/06 621530 9.3874 2.4828 05/16/06 622813 1.8761 2.5504 08/08/06 624489 5.1168 3.1019 11/28/06 626668 3.1422 1.8082 12/26/06 627207 PB-214 5.8560 2.2764 01/24/06 620422 5.8804 3.5690 02/21/06 620947 9.8411 3.2136 03/21/06 621530

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3125 WBN WELL #5 ONSITE N GAMMA SCAN (GELI)

PB-214 9.9608 3.5721 05/16/06 622813 4.1805 2.6016 07/11/06 623909 3.6180 3.0106 08/08/06 624489 3.1788 2.6791 09/05/06 625006 3.1586 3.4302 10/03/06 625533 5.4008 2.3420 10/31/06 626132 6.4019 4.8018 11/28/06 626668 6.5398 3.4613 12/26/06 627207 TL-208 2.5213 .9482 02/21/06 620947 A*

2.8851 1.6637 03/21/06 621530 3.7826 1.7941 05/16/06 622813 1.2983 1.4985 08/08/06 624489

.2305 1.7413 10/03/06 625533 1.0106 1.1201 11/28/06 626668 3.8889 1.3846 12/26/06 627207 TRITIUM 17.1386 65.4870 01/24/06 620422

.7298 63.9867 02/21/06 620947 18.6754 65.9508 03/21/06 621530 81.5472 82.8305 04/18/06 622173 54.1553 82.2870 05/16/06 622813 79.5159 69.8936 06/13/06 623355 77.4149 80.9074 07/11/06 623909 34.2743 80.1060 08/08/06 624489

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3125 WBN WELL #5 ONSITE N TRITIUM 98.3448 67.3826 09/05/06 625006 29.7352 83.4534 10/03/06 625533 30.2735 83.4492 10/31/06 626132 32.6505 80.4824 11/28/06 626668 213.8314 85.8112 12/26/06 627207 3263 WBN MW-A 0.58 MILES SSE GROSS BETA 2.4238 .7799 01/24/06 620432 1.1733 .7376 02/21/06 620957 1.1697 .7348 03/21/06 621540 1.8949 .7966 04/18/06 622183 1.3793 .7521 05/16/06 622823 2.5033 .8256 06/13/06 623365 2.0159 .7752 07/11/06 623919 1.4172 .7405 08/08/06 624499 1.5168 .7056 09/05/06 625016 1.1923 .7487 10/03/06 625543 2.6617 .8056 10/31/06 626148

.7402 .7395 11/28/06 626678 1.5990 .8021 12/26/06 627217 GAMMA SCAN (GELI)

AC-228 5.3325 5.1297 01/24/06 620432 7.7450 5.7425 02/21/06 620957 6.1249 4.2626 03/21/06 621540 11.3339 5.3850 04/18/06 622183

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3263 WBN MW-A 0.58 MILES SSE GAMMA SCAN (GELI)

AC-228 5.4394 4.0203 05/16/06 622823 BI-214 30.0073 4.0000 01/24/06 620432 9.2801 3.0937 02/21/06 620957 21.8578 2.9103 03/21/06 621540 14.3039 3.9002 04/18/06 622183 21.5492 4.0543 05/16/06 622823 20.9131 4.8838 06/13/06 623365 10.3093 2.6858 07/11/06 623919 16.0340 3.7632 08/08/06 624499 10.7080 3.6928 09/05/06 625016 18.2073 6.0537 10/03/06 625543 41.8718 5.2383 10/31/06 626148 5.8186 3.4089 11/28/06 626678 K-40 3.4786 13.6285 01/24/06 620432

.4097 13.4727 02/21/06 620957 2.3421 13.6958 04/18/06 622183 12.2411 17.4328 05/16/06 622823 25.4488 15.8968 07/11/06 623919 69.4790 21.0651 08/08/06 624499 9.9520 14.4531 09/05/06 625016 38.3510 17.4993 10/31/06 626148 PB-212 4.3926 2.0252 07/11/06 623919 6.2608 1.9376 08/08/06 624499

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3263 WBN MW-A 0.58 MILES SSE GAMMA SCAN (GELI)

PB-212 3.7636 1.7854 10/03/06 625543 4.7565 1.7364 10/31/06 626148 PB-214 35.3223 4.3888 01/24/06 620432 9.9174 3.5853 02/21/06 620957 17.2777 3.2270 03/21/06 621540 13.9274 3.2849 04/18/06 622183 16.9111 3.6552 05/16/06 622823 9.2344 4.4739 06/13/06 623365 8.8676 3.7047 07/11/06 623919

-4 14.0767 3.4730 08/08/06 624499 7.3775 3.4784 09/05/06 625016 15.7976 4.2331 10/03/06 625543 27.8773 5.2361 10/31/06 626148 9.5241 2.4218 11/28/06 626678 8.2701 3.9111 12/26/06 627217 TL-208 1.8165 .9880 07/11/06 623919 3.6055 1.6270 10/31/06 626148 TRITIUM 29.2821 66.7487 01/24/06 620432 65.6843 64.9062 02/21/06 620957 62.7490 66.5604 03/21/06 621540

- 163.0937 79.4138 04/18/06 622183

- 106.8264 79.9648 05/16/06 622823

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3263 WBN MW-A 0.58 MILES SSE TRITIUM 4347.8209 251.9722 06/13/06 623365

- 46.1514 78.9287 07/11/06 623919 87.1756 82.0655 08/08/06 624499

- 44.8237 68.1208 09/05/06 625016 75.4819 84.2194 10/03/06 625543 50.7079 83.7821 10/31/06 626148 61.5040 81.9909 11/28/06 626678 250.1123 86.5985 12/26/06 627217 3264 WBN MW-B 0.45 MILES SSE GROSS BETA

?0 3.6023 .7967 01/24/06 620433 4.1454 .9326 02/21/06 620958 9.6452 1.2369 03/21/06 621541 5.4044 .9835 04/18/06 622184 4.5641 .9523 05/16/06 622824 4.5123 .9411 06/13/06 623366 2.8806 .8542 07/11/06 623920 3.5252 .8906 08/08/06 624500 3.2330 .8886 10/03/06 625544 2.2074 .8255 10/31/06 626149 2.3327 .8501 11/28/06 626679 2.5417 .8584 12/26/06 627218 GAMMA SCAN (GELI)

AC-228 12.5829 3.6761 01/24/06 620433 24.3452 7.0311 06/13/06 623366

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3264 WBN MW-B 0.45 MILES SSE GAMMA SCAN (GELI)

AC-228 1.8909 3.6536 07/11/06 623920 5.3742 5.1249 11/28/06 626679 BI-214 38.4854 4.9624 .01/24/06 620433 6.7911 4.9622 02/21/06 620958 18.1689 3.8080 03/21/06 621541 8.2674 3.2446 04/18/06 622184 6.8556 4.6733 05/16/06 622824 40.7008 4.7901 06/13/06 623366 2.2199 3.1191 07/11/06 623920 4.0482 3.7902 08/08/06 624500 7.4952 3.5447 10/03/06 625544 44.6638 5.2917 10/31/06 626149 7.5562 3.0297 11/28/06, 626679 2.0716 3.6853 12/26/06 627218 K-40 77.2927 25.4316 01/24/06 620433 4.0740 18.6509 03/21/06 621541 21.5640 19.8995 04/18/06 622184 337.4636 36.5061 06/13/06 623366 3.3887 18.2541 07/11/06 623920 3.2644 15.0812 08/08/06 624500 42.5185 16.4945 10/03/06 625544 24.3047 14.6360 12/26/06 627218 P8-212 7.1301 2.7523 01/24/06 620433

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activit Lab Number Error Date Collected 3264 WBN MW-B 0.45 MILES SSE GAMMA SCAN (GELI)

PB-212 1.7042 2.7244 03/21/06 621541 9.4458 3.5241 06/13/06 623366

.1830 2.6401 11/28/06 626679 PB-214 40.5574 4.2812 01/24/06 620433 4.3995 2.7802 02/21/06 620958 9.8435 3.2484 03/21/06 621541 7.9617 3.8538 04/18/06 622184.

31.5408 3.9627 06/13/06 623366

.7891 4.5686 07/11/06 623920 2.8395 3.6572 08/08/06 624500 11.0072 3.2765 10/03/06 625544 31.5371 6.4474 10/31/06 626149 6.5517 3.1387 12/26/06 627218 TL-208 2.2608 .8601 01/24/06 620433

'.1117 1.3203 03/21/06 621541 4.4227 1.6526 06/13/06 623366 TRITIUM 12590.0937 650.6867 01/24/06 620433 10292.0102 535.6509 02/21/06 620958 9889.5610 516.0191 03/21/06 621541 9257.0610 495.3738 04/18/06 622184 9836.9450 524.1516 05/16/06 622824 9459.1250 504.4649 06/13/06 623366

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3264 WBN MW-B 0.45 MILES SSE TRITIUM 10260.5126 545.0197 07/11/06 623920 11032.5734 583.5940 08/08/06 624500 10125.2631 539.4441 10/03/06 625544 8976.8216 482.3053 10/31/06 626149 8869.4954 476.7351 11/28/06 626679 9928.0752 529.8198 12/26/06 627218 3265 WBN MW-C 0.25 MILES ESE GROSS BETA 2.1913 .6693 01/24/06 620434 3.0632 .7617 02/21/06 620959 12.1455 1.2780 03/21/06 621542 6.1769 .9772 04/18/06 622185 3.1846 .7919 05/16/06 622825 4.1292 .8325 06/13/06 623367 4.1948 .8460 07/11/06 623921 3.9999 .8247 08/08/06 624501 5.1688 .8992 09/05/06 625018 3.9172 .8277 10/03/06 625545 2.1310 .8205 10/31/06 626150 1.8094 .7165 11/28/06 626680

.7753 .6606 12/26/06 627219 GAMMA SCAN (GELI)

AC-228 3.4383 3.5950 01/24/06 620434 10.1400 4.5802 04/18/06 622185 10.3969 5.0143 06/13/06 623367

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error "Date Collected Lab Number 3265 WBN MW-C 0.25 MILES ESE GAMMA SCAN (GELI)

AC-228 3.9280 4.6112 10/31/06 626150 BI-214 16.9833 3.0592 01/24/06 620434

.4583 2.4716 02/21/06 620959 14.3542 3.8319 03/21/06 621542 7.7546 2.6792 04/18/06 622185 7.0277 3.6897 05/16/06 622825 7.0847 3.0717 06/13/06 623367 4.3593 3.4879 08/08/06 624501 2.1292 2.7932 09/05/06 625018 12.5531 3.4475 10/03/06 625545 30.3034 4.0977 10/31/06 626150 3.0294 2.9480 11/28/06 626680 10.0528 3.3245 12/26/06 627219 K-40 11.4538 16.1429 02/21/06 620959 65.2695 20.3132 03/21/06 621542 51.3299 22.1134 04/18/06 622185 83.4825 20.2792 06/13/06 623367 1.7009 16.2405 08/08/06 624501 83.7850 24.7610 10/03/06 625545 34.1896 19.9199 10/31/06 626150 28.9537 18.3374 11/28/06 626680 18.1557 17.4762 12/26/06 627219 PB-212 5.1164 1.9783- 03/21/06 621542

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - .12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3265 WBN MW-C 0.25 MILES ESE GAMMA SCAN (GELI)

PB-212 2.0351 2.1300 04/18/06 622185 3.6395 2.6234 06/13/06 623367 1.5848 1.6781 10/31/06 626150 2.2258 2.0962 11/28/06 626680 PB-214 5.7731 2.9085 01/24/06 620434

.9177 2.0778 02/21/06 620959 11.2371 3.5278 03/21/06 621542 5.9570 2.7814 04/18/06 622185 7.2280 3.8627 05/16/06 622825 11.6542 3.3944 06/13/06 623367 3.3110 3.7886 07/11/06 623921 1.5803 2.7479 08/08/06 624501 3.5527 3.4436 09/05/06 625018 11.9822 2.8325 10/03/06 625545 20.3219 4.3456 10/31/06 626150 2.8900 3.5444 11/28/06 626680 8.7745 2.4183 12/26/06 627219 TL-208 2.1961 1.2217 03/21/06 621542 3.6262 1.2137 06/13/06 623367

.5614 1.1590 09/05/06 625018 TRITIUM 7673.8685 406.2392 01/24/06 620434 5659.0337 306.1606 02/21/06 620959

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3265 WBN MW-C 0.25 MILES ESE TRITIUM 8406.0120 442.2258 03/21/06 621542 7055.2332 386.6168 04/18/06 622185 6161.7721 342.8082 05/16/06 622825 6327.1437 349.0405 06/13/06 623367 6340.5446 351.2285 07/11/06 623921 5814.6556 325.7748 08/08/06 624501 5940.7774 326.8600 09/05/06 625018 4576.9666 267.0490 10/03/06 625545 3613.1078 221.1338 10/31/06 626150 2908.8996 187.7394 11/28/06 626680 2453.2531 167.8742 12/26/06 627219 3266 WBN MW-D 0.40 MILES SSE GROSS BETA 2.2629 .9831 05/16/06 622826 2.4433 .8668 06/13/06 623368 2.6424 .8518 07/11/06 623922 2.3224 .8038 08/08/06 624502 3.7344 .9153 09/05/06 625019 3.7929 .8766 10/03/06 625546 2.9766 .7768 10/31/06 626151 3.6787 .9150 11/28/06 626681 1.3805 .7866 12/26/06 627220 GAMMA SCAN (GELI)

AC-228 3.7182 3.4258 06/13/06 623368

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3266 WBN MW-D 0.40 MILES SSE GAMMA SCAN (GELI)

BI-214 13.5936 3.6325 05/16/06 622826

.2391 2.3584 06/13/06 623368

.6583 2.7743 07/11/06 623922 6.6213 1.4740 08/08/06 624502 5.9339 2.8172 09/05/06 625019 12.6942 4.1675 10/03/06 625546 24.4157 4.3170 10/31/06 626151

.1233 2.7943 11/28/06 626681 4.0917 3.1092 12/26/06 627220 K-40 61.9935 21.3194 05/16/06 622826

.2187 13.6031 06/13/06 623368 10.0073 13.0623 07/11/06 623922 6.6222 8.3281 08/08/06 624502 19.8510 16.0456 09/05/06 625019 67.2298 20.5300 10/31/06 626151 10.7339 14.9931 11/28/06 626681 PB-212 3.8812 2.2148 05/16/06 622826 5.5445 1.8766 10/31/06 626151 PB-214 14.9071 2.4954 05/16/06 622826

.9681 2.1489 06/13/06 623368 3.3922 1.0112 08/08/06 624502

- 3.4907 2.7546 09/05/06 625019 10.3603 3.0098 10/03/06 625546

Tennessee Valley Authority Table 14 RADIOACTIVITY IN CONTIN. WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3266 WBN MW-D 0.40 MILES SSE GAMMA SCAN (GELI)

PB-214 17.1834 3.7002 10/31/06 626151 TL-208 1.9927 1.1266 05/16/06 622826

.8260 .4508 08/08/06 624502 2.9303 .9292 10/31/06 626151 TRITIUM 8871.8834 476.2945 05/16/06 622826 5034.8770 285.4875 06/13/06 623368 3583.4283 218.1355 07/11/06 623922 3385.6896 209.2606 08/08/06 624502 2825.2263 176.4401 09/05/06 625019 1973.9657 147.3900 10/03/06 625546 1973.0650 147.2201 10/31/06 626151 1766.9153 137.4697 11/28/06 626681 2863.9451 186.3956 12/26/06 627220

Tennessee Valley Authority Table 15 RADIOACTIVITY IN GRAB WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3115 LAYMAN FARM 1.3 MILES SSW GROSS BETA 1.4826 .6161 01/25/06 620420 1.1993 .6259 02/22/06 620945 1.0899 .6210 03/22/06 621528

.9250 .6122 04/19/06 622171

.6478 .5958 05/16/06 622811 1.6855 .6483 06/14/06 623353 1.3133 .6339 07/12/06 623907 2.1287 .6716 08/09/06 624487 2.1563 .6653 09/06/06 625004

.9724 .6118 10/04/06 625531 1.3607 .6340 10/31/06 626130 1.5686 .6394 11/29/06 626666

.2650 .5761 12/27/06 627205 GAMMA SCAN (GELI)

AC-228 4.2213 3.5473 12/27/06 627205 BI-214 244.2793 14.7506 01/25/06 620420 215.4515 16.6626 02/22/06 620945 217.3792 13.7860 03/22/06 621528 192.6091 11.8398 04/19/06 622171 248.6177 16.3642 05/16/06 622811 213.4841 14.2916 06/14/06 623353 137.4584 10.9242 07/12/06 623907 197.4029 13.7777 08/09/06 624487 231.4918 14.2953 09/06/06 625004

Tennessee Valley Authority Table 15 RADIOACTIVITY IN GRAB WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3115 LAYMAN FARM 1.3 MILES SSW GAMMA SCAN (GELI)

BI-214 231.6905 15.6403 10/04/06 625531 200.2927 14.5311 10/31/06 626130 188.6648 11.0070 11/29/06 626666 36.7473 5.2235 12/27/06 627205 K-40 38.4044 25.3933 03/22/06 621528 32.4682 20.4011 04/19/06 622171 43.0789 21.4339 06/14/06 623353 27.0962 29.7287 09/06/06 625004 20.5787 20.5065 10/04/06 625531 00 65.8761 22.8764 11/29/06 626666 22.8421 15.8570 12/27/06 627205 PB-212

.1855 2.1784 09/06/06 625004 1.0368 2.3093 10/04/06 625531 5.6947 1.7821 11/29/06 626666 PB-214 239.2929 17.6987 01/25/06 620420 199.0501 13.2252 02/22/06 620945 221.5495 12.3749 03/22/06 621528 194.9258 63.3486 04/19/06 622171 244.1981 14.1275 05/16/06 622811 205.3621 11.3549 06/14/06 623353 130.1853 10.3058 07/12/06 623907 183.1199 12.7658 08/09/06 624487 227.3624 12.5177 09/06/06 625004

Tennessee Valley Authority Table 15 RADIOACTIVITY IN GRAB WELL WATER(Total)

WATTS BAR NUCLEAR PLANT PCI/L - 0.037 BQ/L 01/03/2006 - 12/29/2006 Station Lobation Description Analysis Nuclide Activit Error Date Collected Lab Number 3115 LAYMAN FARM 1.3 MILES SSW GAMMA SCAN (GELI)

PB-214 213.2608 14.2789 10/04/06 625531 194.6108 13.8737 10/31/06 626130 191.1661 11.9062 11/29/06 626666 37.1759 4.3637 12/27/06 627205 TL-208 2.2922 1.3106 06/14/06 623353 2.4058 1.7630 09/06/06 625004 TRITIUM 98.3493 66.6754 01/25/06 620420

- 53.2724 63.3675 02/22/06 620945 46.1850 65.7109 03/22/06 621528 58.2858 81.4667 04/19/06 622171 42.0769 81.3737 05/16/06 622811 14.6662 68.5689 06/14/06 623353 41.6385 67.7239 07/12/06 623907

- 24.5849 80.2365 08/09/06 624487

- 30.0784 83.8159 09/06/06 625004 57.9395 83.9102 10/04/06 625531

- 24.8433 81.7989 10/31/06 626130

- 9.1107 62.6091 11/29/06 626666 137.9314 86.6928 12/27/06 627205

Tennessee Valley Authority Table 16 RADIOACTIVITY IN COMMERCIAL FISH WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2160 CHICKAMAUGA RES TRM 471-530 GAMMA SCAN (GELI)

BI-214

.0753 .0278 05/10/06 622478

.1421 .0151 11/02/06 626076 CS-137

.0338 .0051 05/10/06 622478 K-40 13.1485 .6265 05/10/06 622478 10.2141 .5413 11/02/06 626076 PB-214

.0505 .0121 05/10/06 622478

.1057 .0128 11/02/06 626076 WATTS BAR RES TRM 530-602 GAMMA SCAN (GELI)

BI-214

.0402 .0132 05/09/06 622481

.2463 .0258 11/03/06 626079 CS-1 37

.1076 .0102 05/09/06 622481

.0535 .0076 11/03/06 626079 K-40 11.6424 .6084 05/09/06 622481 14.3511 .7665 11/03/06 626079 PB-214

.0397 .0099 05/09/06 622481

.2166 .0261 11/03/06 626079

Tennessee Valley Authority Table 16 RADIOACTIVITY IN COMMERCIAL FISH WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3261 DOWNSTREAM STATION 1 DOWNSTREAM GAMMA SCAN (GELI)

BI-214

.0875 .0122 05/09/06 622531

.0596 .0109 10/31/06 626146 CS-137

.0338 .0072 05/09/06 622531 K-40 10.8064 .5201 05/09/06 622531 10.5301 .6114 10/31/06 626146 PB-212

.0039 .0043 10/31/06 626146 PB-214

.0572 .0110 05/09/06 622531

.0599 .0101 10/31/06 626146 TL-208

.0054 .0028 05/09/06 622531

Tennessee Valley Authority Table 17 RADIOACTIVITY IN GAME FISH WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 2160 CHICKAMAUGA RES TRM 471-530 GAMMA SCAN (GELI)

BI-214

.0409 .0130 05/10/06 622477

.0692 .0160 11/02/06 626075 CS-1 37

.0469 .0053 05/10/06 622477

.0190 .0049 11/02/06 626075 K-40 17.1434 .8337 05/10/06 622477 12.9278 .6524 11/02/06 626075 PB-214

.0416 .0121 05/10/06 622477

.0750 .0111 11/02/06 626075 2161 WATTS BAR RES TRM 530-602 GAMMA SCAN (GELI)

BI-214

.0344 .0081 05/09/06 622480

.0885 .0139 11/03/06 626078 CS-137

.1007 .0121 05/09/06 622480

.0589 .0081 11/03/06 626078 K-40 13.8270 .7351 05/09/06 622480 12.9622 .6612 11/03/06 626078 PB-212

.0073 .0082 05/09/06 622480 PB-214

.0272 .0107 05/09/06 622480

.0851 .0124 11/03/06 626078

Tennessee Valley Authority Table 17 RADIOACTIVITY IN GAME FISH WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3261 DOWNSTREAM STATION 1 DOWNSTREAM GAMMA SCAN (GELI)

BI-214

.0961 .0202 05/09/06 622530

.2372 .0242 10/31/06 626145 CS-137 .

.0475 .0087 05/09/06 622530

.0473 .0092 10/31/06 626145 K-40 14.8968 .8222 05/09/06 622530 13.0170 .6982 10/31/06 626145 PB-214

.1086 .0169 05/09/06 622530

.2055 .0277 10/31/06 626145

Tennessee Valley Authority Table 18 RADIOACTIVITY IN SHORELINE SEDIMENT WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3191 WATTS BAR RESORT TRM 530 GAMMA SCAN (GELI)

AC-228

.0686 .0216 05/02/06 622520

.0660 .0119 10/31/06 626133 BE-7

.6046 .0609 05/02/06 622520

.1139 .0248 10/31/06 626133 BI-214

.1089 .0121 05/02/06 622520

.1073 .0122 10/31/06 626133 K-40

.3557 .0787 05/02/06 622520

.2677 .0512 10/31/06 626133 PB-212

.0614 .0102 05/02/06 622520

.0512 .0074 10/31/06 626133 PB-214

.1228 .0105 05/02/06 622520

.1103 .0093 10/31/06 626133 RA-226

.1073 .0122 10/31/06 626133 TL-208

.0283 .0046 05/02/06 622520

.0200 .0035 10/31/06 626133 3193 COTTON PORT MARINA TRM 513 GAMMA SCAN (GELI)

AC-228 1.4383 .0937 05/03/06 622522 1.3333 .0897 11/01/06 626134

Tennessee Valley Authority Table 18 RADIOACTIVITY IN SHORELINE SEDIMENT WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3193 COTTON PORT MARINA TRM 513 GAMMA SCAN (GELI)

BE-7

.2654 .0373 05/03/06 622522

.1856 .0632 11/01/06 626134 BI-212 1.5853 .1379 05/03/06 622522 1.6185 .1353 11/01/06 626134 BI-214

.5184 .0316 05/03/06 622522

.6626 .0364 11/01/06 626134 CS-137

.0253 .0071 05/03/06 622522

.0344 .0059 11/01/06 626134 K-40 30.5389 1.3866 05/03/06 622522 32.5647 1.4179 11/01/06 626134 PB-212 1.3119 .0550 05/03/06 622522 1.3491 .0591 11/01/06 626134 PB-214

.5679 .0288 05/03/06 622522

.6980 .0397 11/01/06 626134 RA-224 1.1975 .1250 05/03/06 622522 1.3568 .1954 11/01/06 626134 RA-226

.5184 .0316 05/03/06 622522

.6626 .0364 11/01/06 626134 TL-208

Tennessee Valley Authority Table 18 RADIOACTIVITY IN SHORELINE SEDIMENT WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab NUmber 3193 COTTON PORT MARINA TRM 513 GAMMA SCAN (GELI)

TL-208

.4367 .0224 05/03/06 622522

.4749 .0246 11/01/06 626134

Tennessee Valley Authority Table 19 RADIOACTIVITY IN POND SEDIMENT WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Date Collected Lab Number Error 3303 LV-3 LOW VOL WASTE POND GAMMA SCAN (GELI)

AC-228

.6311 .0549 10/12/06 622533 BI-212

.6743 .0871 10/12/06 622533 BI-214

.5522 .0310 10/12/06 622533 CS-134

.0640 .0055 10/12/06 622533 CS-137

.0904 .0110 10/12/06 622533 K-40 8.3974 .4411 10/12/06 622533 PB-212

.6163 .0457 10/12/06 622533 PB-214

.5800 .0404 10/12/06 622533 TL-208

.2233 .0166 10/12/06 622533 3305 YP-5 YARD POND GAMMA SCAN (GELI)

AC-228

.8876 .0593 10/12/06 622534 BE-7

.3229 .0561 10/12/06 622534 BI-212

.9444 .1121 10/12/06 622534 BI-214

.6601 .0374 10/12/06 622534 CO-58

Tennessee Valley Authority Table 19 RADIOACTIVITY IN POND SEDIMENT WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activit Error Date Collected Lab Number 3305 YP-5 YARD POND GAMMA SCAN (GELI)

CO-58

.0293 .0051 10/12/06 622534 CO-60

.0199 .0061 10/12/06 622534 CS-134

.0834 .0072 10/12/06 622534 CS-137

.1128 .0120 10/12/06 622534 K-40 10.6999 .5016 10/12/06 622534 PB-212

.8538 .0462 10/12/06 622534

?00 PB-214

.6983 .0427 10/12/06 622534 TL-208

.2870 .0147 10/12/06 622534 3313 YP-13 YARD POND GAMMA SCAN (GELI)

AC-228 1.1834 .0838 10/12/06 622535 BE-7

.5666 .1009 10/12/06 622535 BI-212 1.1954 .1636 10/12/06 622535 BI-214

.8349 .0760 10/12/06 622535 CO-60

.0532 .0140 10/12/06 622535 CS-137

Tennessee Valley Authority Table 19 RADIOACTIVITY IN POND SEDIMENT WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3313 YP-13 YARD POND GAMMA SCAN (GELI)

CS-137

.2078 .0170 10/12/06 622535 K-40 16.2012 .9766 10/12/06 622535 PB-212 1.2088 .0614 10/12/06 622535 PB-214

.9899 .0651 10/12/06 622535 TL-208

.4263 .0316 10/12/06 622535 3316 YP-16 YARD POND GAMMA SCAN (GELI)

AC-228

.8576 .0631 10/12/06 622536 BE-7

.4594 .0644 10/12/06 622536 BI-212

.8551 .1070 10/12/06 622536 BI-214

.7251 .0405 10/12/06 622536 CO-58

.3713 .0236 10/12/06 622536 CO-60

.0815 .0099 10/12/06 622536 CS-134

.0670 .0060 10/12/06 622536 CS-137

.0966 .0095 10/12/06 622536 K-40

Tennessee Valley Authority Table 19 RADIOACTIVITY IN POND SEDIMENT WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 " 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3316 YP-16 YARD POND GAMMA SCAN (GELI)

K-40 11.2451 .5664 10/12/06 622536 PB-212

.9093 .0563 10/12/06 622536 PB-214

.7552 .0427 10/12/06 622536 RA-224

.7864 .1746 10/12/06 622536 SB-125

.2065 .0257 10/12/06 622536 TL-208

.2804 .0176 10/12/06 622536 3317 YP-17 YARD POND GAMMA SCAN (GELI)

AC-228

.7875 .0489 10/12/06 622537 BE-7

.4102 .0453 10/12/06 622537 BI-212

.8799 .0920 10/12/06 622537 BI-214

.6386 .0420 10/12/06 622537 CO-58

.4495 .0282 10/12/06 622537 CO-60

.1337 .0142 10/12/06 622537 CS- 134

.0678 .0074 10/12/06 622537 CS-1 37

Tennessee Valley Authority Table 19 RADIOACTIVITY IN POND SEDIMENT WATTS BAR NUCLEAR PLANT PCI/GM - 0.037 BQ/G (DRY WEIGHT) 01/03/2006 - 12/29/2006 Station Location Description Analysis Nuclide Activity Error Date Collected Lab Number 3317 YP-17 YARD POND GAMMA SCAN (GELI)

CS-137

.0956 .0127 10/12/06 622537 K-40 9.7993 .4985 10/12/06 622537 PB-212

.8634 .0449 10/12/06 622537 PB-214

.6703 .0349 10/12/06 622537 RA-224

.9493 .1418 10/12/06 622537 SB-125

.5635 .0298 10/12/06 cc 622537 TL-208

.2559 .0147 10/12/06 622537

Annual Radiological Environmental Operating Report Watts Bar Nuclear Plant 2006

ANNUAL ENVIRONMENTAL RADIOLOGICAL OPERATING REPORT WATTS BAR NUCLEAR PLANT 2006 TENNESSEE VALLEY AUTHORITY April 2007

TABLE OF CONTENTS Table of Contents .............................................. ii List of T ables ................................................. iv List of Figures ................................................ v Executive Summ ary .......................................... 1 Introduction ................................................. 2 Naturally Occurring and Background Radioactivity ................. 2 Electric Power Production ..................................... 3 Site/Plant D escription .......................................... 6 Radiological Environmental Monitoring Program .................... 8 Direct Radiation Monitoring ..................................... 11 M easurement Techniques ....................................... 11 Resu lts .................................................... 12 Atm ospheric M onitoring ....................................... 14 Sample Collection and Analysis ................................ 14 R esults .................................................... 15 Terrestrial M onitoring............. ............................ . 17 Sample Collection and Analysis ................................ 17 R esults .................................................... 18 Liquid Pathway Monitoring...................................... 20 Sample Collection and Analysis ................................ 20 R esults .................................................... 22 Assessment and Evaluation ..................................... 24 R esults .................................................. 24 C onclusions ................................................ 25 References ................................................... 26

-ii-

Appendix A Radiological Environmental Monitoring Program and Sam pling Locations .............................................. 30 Appendix B 2006 Program Modifications ........................... 41 Appendix C Program Deviations .................................. 43 Appendix D Analytical Procedures ................................ 46 Appendix E Nominal Lower Limits of Detection (LLD) ................ 49 Appendix F Quality Assurance/Quality Control Program ............... 54 Appendix G Land'Use Survey .................................... 60 Appendix H Data Tables and Figures .............................. 66

-iii-

LIST OF TABLES Table 1 Comparison of Program Lower Limits of Detection with Regulatory Limits for Maximum Annual Average Effluent Concentrations Released to Unrestricted Areas and Reporting Levels ............. 27

-iV-

LIST OF FIGURES Figure 1 Tennessee Valley Region ................................. 28 Figure 2 Environmental Exposure Pathways of Man Due to Releases of Radioactive Materials to the Atmosphere and Lake .................................... 29

EXECUTIVE

SUMMARY

This report describes the radiological environmental monitoring program conducted by TVA in the vicinity of the Watts Bar Nuclear Plant (WBN) in 2006. The program includes the collection of samples from the environment and the determination of the concentrations of radioactive materials in the samples. Samples are taken from stations in the general area of the plant and from areas that should not be influenced by plant operations. Material sampled includes air, atmospheric moisture, water, milk, food crops, soil, fish, sediment, and direct radiation levels.

Results from stations near the plant are compared with concentrations from control locations and with preoperational measurements to determine potential impacts of plant operations.

The majority of environmental radioactivity measured by the program was due to naturally occurring radioactive materials or radionuclides commonly found in the environment as a result of atmospheric fallout and the operation of other nuclear facilities in the area. Low levels of Cs-137 were measured in soil, fish, and shoreline sediment samples. The Cs-137 concentrations were consistent with the preoperational monitoring program results and with levels normally found in the environment as the result of past nuclear weapons testing. Trace levels of tritium were detected in a limited number of atmospheric moisture samples. Tritium at concentrations slightly above the analytical detection limit was detected in a limited number of water samples collected from Chickamauga Reservoir. These levels would not represent a significant contribution to the radiation exposures to members of the public.

Tritium was detected in onsite ground water monitoring wells. The tritium was the result of onsite ground water contamination from previously identified and repaired leaks in plant systems. In addition, Co-58, Co-60, Cs-134, Cs-137, and Sb-125 were identified in sediment collected from the onsite Yard Holding Pond. The level of activity measured in these on site locations would not present a risk of exposure to the general public.

INTRODUCTION This report describes and summarizes the results of radioactivity measurements made in the vicinity of WBN and laboratory analyses of samples collected in the area. The measurements are made to comply with the requirements of 10 CFR 50, Appendix A, Criterion 64 and 10 CFR 50, Appendix I, Section IV.B.2, IV.B.3 and IV.C and to determine potential effects on public health and safety. This report satisfies the annual reporting requirements of WBN Technical Specification 5.9.2 and Offsite Dose Calculation Manual (ODCM) Administrative Control 5.1.

In addition to reporting the data prescribed by specific requirements, other information is included to help correlate the significance of results measured by this monitoring program to the levels of environmental radiation resulting from naturally occurring radioactive materials.

Naturally Occurring and Background Radioactivity Most materials in our world today contain trace amounts of naturally occurring radioactivity.

Potassium-40 (K-40), with a half-life of 1.3 billion years, is one of the major types of radioactive materials found naturally in our environment. Approximately 0.01 percent of all potassium is radioactive potassium-40. Other examples of naturally occurring radioactive materials are beryllium (Be)-7, bismuth (Bi)-212 and 214, lead (Pb)-212 and 214, thallium (Tl)-208, actinium (Ac)-228, uranium (U)-238 and 235, thorium (Th)-234, radium (Ra)-226, radon (Ra)-222, carbon (C) -14, and hydrogen (H)-3 (generally called tritium). These naturally occurring radioactive materials are in the soil, our food, our drinking water, and our bodies. The radiation from these materials makes up a part of the low-level natural background radiation. The remainder of the natural background radiation comes from outer space.

It is possible to get an idea of the relative hazard of different types of radiation sources by evaluating the amount of radiation the U.S. population receives from each general type of radiation source. The information below is primarily adapted from References 2 and 3.

U.S. GENERAL POPULATION AVERAGE DOSE EQUIVALENT ESTIMATES Source Millirem/Year Per Person Natural background dose equivalent Cosmic 27 Cosmogenic 1 Terrestrial 28 In the body 39 Radon 200 Total 295 Release of radioactive material in natural gas, mining, ore processing, etc. 5 Medical (effective dose equivalent) 53 Nuclear weapons fallout less than 1 Nuclear energy 0.28 Consumer products 0.03 Total 355 (approximately)

As can be seen from the data presented above, natural background radiation dose equivalent to the U.S. population normally exceeds that from nuclear plants by several hundred times. This indicates that nuclear plant operations normally result in a population radiation dose equivalent which is insignificant compared to that which results from natural background radiation. It should be noted that the use of radiation and radioactive materials for medical uses has resulted in a similar effective dose equivalent to the U.S. population as that caused by natural background cosmic and terrestrial radiation.

Electric Power Production Nuclear power plants are similar in many respects to conventional coal burning (or other fossil fuel) electrical generating plants. The basic process behind electrical power production in both types of plants is that fuel is used to heat water to produce steam which provides the force to turn turbines and generators. In a nuclear power plant, the fuel is uranium and heat is produced in the reactor through the fission of the uranium. Nuclear plants include many complex systems to control the nuclear fission process and to safeguard against the possibility of reactor malfunction.

The nuclear reactions produce radionuclides commonly referred to as fission and activation products. Very small amounts of these fission and activation products are released into the plant systems. This radioactive material can be transported throughout plant systems and some of it released to the environment.

Paths through which radioactivity from a nuclear power plant is routinely released are monitored.

Liquid and gaseous effluent monitors record the radiation levels for each release. These monitors also provide alarm mechanisms to prompt termination of any release above limits.

Releases are monitored at the onsite points of release and through the radiological environmental monitoring program which measures the environmental radiation in areas around the plant. In this way, the release of radioactive materials from the plant is tightly controlled, and verification is provided that the public is not exposed to significant levels of radiation or radioactive materials as the result of plant operations.

The WBN ODCM, which describes the program required by the plant Technical Specifications, prescribes limits for the release of radioactive effluents, as well as limits for doses to the general public from the release of these effluents.

The dose to a member of the general public from radioactive materials released to unrestricted areas, as given in NRC guidelines and the ODCM, is limited as follows:

Liquid Effluents Total body <3 mrem/year Any organ <10 mrem/year Gaseous Effluents Noble gases:

Gamma radiation <10 mrad/year Beta radiation <20 mrad/year Particulates:

Any organ <15 mrem/year The EPA limits for the total dose to the public in the vicinity of a nuclear power plant, established in the Environmental Dose Standard of 40 CFR 190, are as follows:

Total body <25 mrem/year Thyroid <75 mrem/year Any other organ <25 mrem/year Appendix B to 10 CFR 20 presents annual average limits for the concentrations of radioactive materials released in gaseous and liquid effluents at the boundary of the unrestricted areas. Table 1 of this report presents the annual average concentration limits for the principal radionuclides associated with nuclear power plant effluents. The table also presents (1) the concentrations of radioactive materials in the environment which would require a special report to the NRC and (2) the detection limits for measured radionculides. It should be noted that the levels of radioactive materials measured in the environment are typically below or only slightly above the lower limit of detection.

SITE/PLANT DESCRIPTION The WBN site is located in Rhea county, Tennessee, on the west bank of the Tennessee River at Tennessee River Mile (TRM) 528. Figure 1 shows the site in relation to other TVA projects.

The WBN site, containing approximately 1770 acres on Chickamauga Lake, is approximately 2 miles south of the Watts Bar Dam and approximately 31 miles north-northeast of TVA's Sequoyah Nuclear Plant (SQN) site. Also located within the reservation are the Watts Bar Dam and Hydro-Electric Plant, the Watts Bar Steam Plant (not in operation), the TVA Central Maintenance Facility, and the Watts Bar Resort Area.

Approximately 16,000 people live within 10 miles of the WBN site. More than 80 percent of these live between 5 and 10 miles from the site. Two small towns, Spring City and Decatur, are located in this area. Spring City, with a population of approximately 2,200, is northwest and north-northwest from the site, while Decatur, with about 1,400 people, is south and south-southwest from the plant. The remainder of the area within 10 miles of the site is sparsely populated, consisting primarily of small farms and individual residences.

The area between 10 and 50 miles from the site includes portions of the cities of Chattanooga and Knoxville. The largest urban concentration in this area is the city of Chattanooga, located to the southwest and south-southwest. The city of Chattanooga has a population of about 155,000, with approximately 80 percent located between 40 and 50 miles from the site and the remainder located beyond 50 miles. The city of Knoxville is located to the east-northeast, with not more than 10 percent of its 177,000 plus people living within 50 miles of the site. Three smaller urban areas of greater than 20,000 people are located between 30 and 40 miles from the site. Oak Ridge is approximately 40 miles to the northeast, the twin cities of Alcoa and Maryville are located 45 to 50 miles to the east-northeast, and Cleveland is located about 30 miles to the south.

Chickamauga Reservoir is one of a series of highly controlled multiple-use reservoirs whose primary uses are flood control, navigation, and the generation of electric power. Secondary uses include industrial and public water supply and waste disposal, commercial fishing, and recreation. Public access areas, boat docks, and residential subdivisions have been developed along the reservoir shoreline.

WBN consists of two pressurized water reactors. WBN Unit 1 received a low power operating license (NPF-20) on November 9, 1995, and achieved initial criticality in January 1996. The full power operating license (NPF-90) was received on February 7, 1996. Commercial operation was achieved May 25, 1996. WBN Unit 2 was deferred October 24, 2000, in accordance with the guidance in Generic Letter 87-15, "Policy Statement on Deferred Plants."

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Most of the radiation and radioactivity generated in a nuclear power reactor is contained within the reactor itself or one of the other plant systems. Plant effluent radiation monitors are designed to monitor radionuclides released to the environment. Environmental monitoring is a final verification that the systems are performing as planned. The monitoring program is designed to monitor the pathways between the plant and the people in the immediate vicinity of the plant.

Sample types are chosen so that the potential for detection of radioactivity in the environment will be maximized. The Radiological Environmental Monitoring Program (REMP) for WBN is outlined in Appendix A.

There are two primary pathways by which radioactivity can move through the environment to humans: air and water (see Figure 2). The air pathway can be separated into two components:

the direct (airborne) pathway and the indirect (ground or terrestrial) pathway. The direct airborne pathway consists of direct radiation and inhalation by humans. In the terrestrial pathway, radioactive materials may be deposited on the ground or on plants and subsequently ingested by animals and/or humans. Human exposure through the liquid pathway may result from drinking water, eating fish, or by direct exposure at the shoreline. The types of samples collected in this program are designed to monitor these pathways.

A number of factors were considered in determining the locations for collecting environmental samples. The locations for the atmospheric monitoring stations were determined from a critical pathway analysis based on weather patterns, dose projections, population distribution, and land use. Terrestrial sampling stations were selected after reviewing such things as the locations of dairy animals and gardens in conjunction with the air pathway analysis. Liquid pathway stations were selected based on dose projections, water use information, and availability of media such as fish and sediment. Table A-2 (Appendix A, Table 2: This notation system is used for all tables and figures given in the appendices.) lists the sampling stations and the types of samples collected from each. Modifications made in the WBN REMP in 2006 are described in Appendix B.

Deviations occur in the monitoring program due to equipment problems with automatic sampling systems, sample unavailability or when analyses cannot be completed. Deviations to the sampling and analysis schedule during 2006 are described in Appendix C.

To determine the amount of radioactivity in the environment prior to the operation of WBN, a preoperational radiological environmental monitoring program was initiated in December 1976 and operated through December 31, 1995. Measurements of the same types of radioactive materials that are measured currently were assessed during the preoperational phase to establish normal background levels for various radionuclides in the environment. During the 1950s, 60s, and 70s, atmospheric nuclear weapons testing released radioactive material to the environment causing fluctuations in background radiation levels. Knowledge of preexisting radionuclide patterns in the environment permits a determination, through comparison and trending analyses, of the actual environmental impact of WBN operation.

The determination of environmental impact during the operating phase also considers the presence of control stations that have been established in the environment. Results of environmental samples taken at control stations (far from the plant) are compared with those from indicator stations (near the plant) to aid in the determination of the impacts from WBN operation.

The sample analysis is performed by TVA's Environmental Radiological Monitoring and Instrumentation (ERM&I) group located at the Western Area Radiological Laboratory (WARL) in Muscle Shoals, Alabama. Due to a lab equipment problem, the Sr-89,90 analyses of soil samples were performed by a contract laboratory. Analyses are conducted in accordance with written and approved procedures and are based on accepted methods. A summary of the analysis techniques and methodology is presented in Appendix D. Data tables summarizing the sample analysis results are presented in Appendix H. The Data Supplement to this report contains the results of all measurements made as a part of this program.

The radiation detection devices and analysis methods used to determine the radionuclide content of samples collected in the environment are very sensitive to small amounts of radioactivity. The sensitivity of the measurement process is defined in terms of the lower limit of detection (LLD).

A description of the nominal LLDs for the ERM&I laboratory is presented in Appendix E.

The ERM&I laboratory operates under a comprehensive quality assurance/quality control program to monitor laboratory performance throughout the year. The program is intended to detect any problems in the measurement process as soon as possible so they can be corrected.

This program includes equipment checks to ensure that the radiation detection instruments are working properly and the analysis of quality control samples which are included alongside routine environmental samples. To provide for interlaboratory comparison program, the laboratory participates in an environmental cross-check program administered by Analytics, Incorporated. A complete description of the program is presented in Appendix F.

DIRECT RADIATION MONITORING Direct radiation levels are measured at a number of stations around the plant site. These measurements include contributions from cosmic radiation, radioactivity in the ground, fallout from atmospheric nuclear weapons tests conducted in the past, and any radioactivity that may be present as a result of plant operations. Because of the relatively large variations in background radiation as compared to the small levels from the plant, contributions from the plant may be difficult to distinguish.

Direct radiation levels measured in the area around the WBN site in 2006 were consistent with levels from previous years and with levels measured at other locations in the region.

Measurement Techniques Direct radiation measurements are made with thermoluminescent dosimeters (TLDs). The Panasonic Model UD-814 dosimeter is used for the measurement of direct radiation levels in the environment. This dosimeter contains four elements consisting of one lithium borate and three calcium sulfate phosphors. The calcium sulfate phosphors are shielded by approximately 1000 mg/cmr2 plastic and lead to compensate for the over-response of the detector to low energy radiation.

The TLDs are placed approximately one meter above the ground, with two or more TLDs at each station. Sixteen monitoring points are located around the plant near the site boundary; one location in each of the 16 compass sectors. An additional 16 monitoring points are located approximately 5 miles from the plant in each of the 16 sectors. Dosimeters are also placed at the perimeter and remote air monitoring sites and at additional locations out to approximately 32 miles from the site. The environmental TLD locations are listed in Table A-3. The TLDs are exchanged every 3 months and the accumulated exposure is read with a Panasonic Model UD-71 OA automatic reader interfaced with a computer system for data analysis.

Since the calcium sulfate phosphor is much more sensitive than the lithium borate, the measured exposure is taken as the median of the results obtained from the calcium sulfate phosphors. The values are corrected for gamma response, system variations, and transit exposure, with individual gamma response calibrations for each element. The system meets or exceeds the performance specifications outlined in Regulatory Guide 4.13 for environmental applications of TLDs.

Results Results are normalized to a standard quarter (91.25 days or 2190 hours0.0253 days <br />0.608 hours <br />0.00362 weeks <br />8.33295e-4 months <br />). The monitoring locations are grouped according to the distance from the plant. The first group consists of locations within 1 mile of the plant. The second group lies between 1 and 2 miles, the third group between 2 and 4 miles, the fourth group between 4 and 6 miles, and the fifth group is made up of monitoring points more than 6 miles from the plant. Past data have shown that the average results from groups greater than 2 miles from the plant are essentially the same. Therefore, for purposes of this report, locations 2 miles or less from the plant are identified as "onsite" and all others are considered "offsite."

The quarterly gamma radiation levels determined from the TLDs deployed around WBN in 2006 are summarized in Table H-1. The results from all measurements at individual stations are presented in Table H-2. The exposures are measured in milliroentgens (mR). For purposes of this report, one milliroentgen, one millirem (mrem) and one millirad (mrad) are assumed to be numerically equivalent. The rounded average annual exposures are shown below. For comparison purposes, the average direct radiation measurements made in the preoperational monitoring program for the period of 1990 to 1995 are also shown.

Annual Average Direct Radiation Levels WBN mR/Year Preoperational 2006 Average Onsite Stations 62 65 Offsite Stations 59 57 The data in Table H-1 indicate that the average quarterly radiation levels at the WBN onsite stations are approximately 0.8 mR/quarter higher than levels at the offsite stations. This difference is consistent with levels measured for the preoperation and construction phases of TVA nuclear power plant sites where the average levels onsite were generally 2-6 mR/quarter higher than levels offsite. The causes of these differences have not been isolated; however, it is postulated that the differences are probably attributable to combinations of influences such as natural variations in environmental radiation levels, earth-moving activities onsite, and the mass of concrete employed in the construction of the plant. Other undetermined influences may also play a part.

Figure H-1 compares plots of the data from the onsite or site boundary stations with those from the offsite stations over the period from 1990 through 2006. The results reported in 2006 are consistent with direct radiation levels reported in previous years. There is no indication that WBN activities increased the background radiation levels normally observed in the areas surrounding the plant.

ATMOSPHERIC MONITORING The atmospheric monitoring network is divided into three groups identified as local, perimeter, and remote. Four local air monitoring stations are located on or adjacent to the plant site in the general directions of greatest wind frequency. Four perimeter air monitoring stations are located between 6 to 11 miles from the plant, and two remote air monitors are located out to 15 miles.

The monitoring program and the locations of monitoring stations are identified in the tables and figures of Appendix A. The remote stations are used as control or baseline stations.

Results from the analysis of samples in the atmospheric pathway are presented in Tables H-3, H-4, and H-5. Radioactivity levels identified in this reporting period are consistent with background and preoperational program data. There is no indication of an increase in atmospheric radioactivity as a result of WBN.

Sample Collection and Analysis Air particulates are collected by continuously sampling air at a flow rate of approximately 2 cubic feet per minute (cfin) through a 2-inch glass fiber filter. The sampling system consists of a pump, a magnehelic gauge for measuring the drop in pressure across the system, and a dry gas meter to measure the total volume of air sampled. This system is housed in a building approximately 2 feet by 3 feet by 4 feet. The filter is contained in a sampling head mounted on the outside of the monitor building. The filter is replaced weekly. Each filter is analyzed for gross beta activity about 3 days after collection to allow time for the radon daughters to decay.

Every 4 weeks composites of the filters from each location are analyzed by gamma spectroscopy.

Gaseous radioiodine is sampled using a commercially available cartridge containing TEDA-impregnated charcoal. This system is designed to collect iodine in both the elemental form and as organic compounds. The cartridge is located in the same sampling head as the air particulate filter and is downstream of the particulate filter. The cartridge is changed at the same time as the particulate filter and samples the same volume of air. Each cartridge is analyzed for 1-131 by gamma spectroscopy analysis.

Atmospheric moisture sampling is conducted by pulling air at a constant flow rate through a column loaded with approximately 400 grams of silica gel. Every two weeks, the column is exchanged on the sampler. The atmospheric moisture is removed from silicagel by heating and analyzed for tritium.

Rainwater is collected by use of a collection tray attached to the monitor building. The collection tray is protected from debris by a screen cover. As water drains from the tray, it is collected in one of two 5-gallon containers inside the monitor building. A 1-gallon sample is removed from the container every 4 weeks. Any excess water is discarded. Rainwater samples are held to be analyzed only if air particulate samples indicate the presence of elevated levels or if fallout is expected. For example, rainwater samples were analyzed during the period of fallout following the accident at Chernobyl in 1986. Since no plant-related air activity was detected in 2006, no rainwater samples from WBN were analyzed in this reporting period.

Results The results from the analysis of air particulate samples are summarized in Table H-3. Gross beta activity in 2006 was consistent with levels reported in previous years. The average gross beta activity measured for air particulate samples was 0.021 pCi/m3 . The annual averages of the gross beta activity in air particulate filters at these stations for the period 1977-2006 are presented in Figure H-2. Increased levels due to fallout from atmospheric nuclear weapons testing are evident in the years prior to 1981 and a small increase from the Chernobyl accident can be seen in 1986.

These patterns are consistent with data from monitoring programs conducted by TVA at other nuclear power plant construction sites. Comparison with the same data for the preoperational period of 1990-1995 indicates that the annual average gross beta activity for air particulates as measured in the 2006 monitoring program was consistent with the preoperational data.

Only natural radioactive materials were identified by the monthly gamma spectral analysis of the air particulate samples. As shown in Table H-4, 1-131 was not detected in any charcoal cartridge samples collected in 2006.

The results for atmospheric moisture sampling are reported in Table H-5. Tritium was measured in a limited number of atmospheric moisture samples at levels slightly above the nominal LLD value at 3.0 pCi/cubic meter.

TERRESTRIAL MONITORING Terrestrial monitoring is accomplished by collecting samples of environmental media that may

-transport radioactive material from the atmosphere to humans. For example, radioactive material may be deposited on a vegetable garden and be ingested along with the vegetables or it maybe deposited on pasture grass where dairy cattle are grazing. When the cow ingests the radioactive material, some of it may be transferred to the milk and consumed by humans who drink the milk.

Therefore, samples of milk, soil, and food crops are collected and analyzed to determine potential impacts from exposure through this pathway. The results from the analysis of these samples are shown in Tables H-6 through H-12.

A land use survey is conducted annually between April and October to identify the location of the nearest milk animal, the nearest residence, and the nearest garden of greater than 500 square feet producing fresh leafy vegetables in each of 16 meteorological sectors within a distance of 5 miles from the plant. This land use survey satisfies the requirements 10 CFR 50, Appendix I, Section IV.B.3. From data produced by the land use survey, radiation doses are projected for individuals living near the plant. Doses from air submersion are calculated for the nearest residence in each sector, while doses from drinking milk or eating foods produced near the plant are calculated for the areas with milk-producing animals and gardens, respectively. These dose projections are hypothetical extremes and do not represent actual doses to the general public.

The results of the 2006 land use survey are presented in Appendix G.

Sample Collection and Analysis Milk samples are collected every 2 weeks from three indicator dairies and from at least one control dairy. Milk samples are placed on ice for transport to the radioanalytical laboratory. A specific analysis for 1-131 and a gamma spectral analysis are performed on each sample and once per quarter samples are analyzed for Sr-89 and Sr-90.

The monitoring program includes a provision for sampling of vegetation from locations where milk is being produced and when milk sampling cannot be conducted. There were no periods during 2006 when vegetation sampling was necessary.

Soil samples are collected annually from the air monitoring locations. The samples are collected with either a "cookie cutter" or an auger type sampler. After drying and grinding, the sample is analyzed by gamma spectroscopy. When the gamma analysis is complete, the sample is analyzed for Sr-89 and Sr-90.

Samples representative of food crops raised in the area near the plant are obtained from individual gardens, corner markets, or cooperatives. Types of foods may vary from year to year as a result of changes in the local vegetable gardens. In 2006, samples of apples, cabbage, corn, green beans, and tomatoes, were collected from local vegetable gardens and/or farms. Samples of the same food products grown in areas that would not be effected by the plant were collected as control samples. The edible portion of each sample is analyzed by gamma spectroscopy.

Results The results from the analysis of milk samples are presented in Table H-6. All 1-131 values were below the established nominal LLD of 0.4 pCi/liter. The results for the quarterly Sr-89, Sr-90 analysis were below the established LLD's for these analyses. The gamma isotopic analysis detected only naturally occurring radionuclides.

Consistent with most of the environment, Cs-137 was detected in all of the soil samples collected in 2006. The maximum concentration of Cs-137 was 1.26 pCi/g. The concentrations were.

consistent with levels previously reported from fallout. All other radionuclides reported were naturally occurring isotopes. The results of the analysis of soil samples are summarized in Table H-7.

A plot of the annual average Cs-137 concentrations in soil is presented in Figure H-3.

Concentrations of Cs-137 in soil are steadily decreasing as a result of the cessation of weapons testing in the atmosphere, the 30 year half-life of Cs- 137, and transport through the environment.

The radionuclides measured in food samples were naturally occurring. The results are reported in Tables H-8 through H-12.

LIQUID PATHWAY MONITORING Potential exposures from the liquid pathway can occur from drinking water, ingestion of fish, or from direct radiation exposure from radioactive materials deposited in the shoreline sediment.

The aquatic monitoring program includes the collection of samples of river (surface) water, groundwater, drinking water supplies, fish, and shoreline sediment. Indicator samples were collected downstream of the plant and control samples collected within the reservoir upstream of the plant or in the next upstream reservoir (Watts Bar Lake).

Results from the analysis of the liquid pathway samples are presented in Table H-13 through H-19. Radioactivity levels in surface and public water, fish, and shoreline sediment were consistent with background and/or fallout levels previously reported. Low levels of Cs-137 were measured in samples of shoreline sediment and fish. Low levels of tritium were detected in a limited number of water samples collected in Chickamauga Reservoir. Results for the sediment sampling conducted in the onsite Yard Holding Pond and ground water monitoring in onsite wells are discussed later in this section.

Sample Collection and Analysis Samples of surface water are collected from the Tennessee River using automatic sampling systems from two downstream stations and one upstream station. A timer turns on the system at least once every 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. The line is flushed and a sample collected into a composite container.

A 1-gallon sample is removed from the container at 4-week intervals and the remaining water is discarded. Each sample is analyzed for gamma-emitting radionculides, gross beta activity, and tritium.

Samples are also collected by an automatic sampling system at the first two downstream drinking water intakes. These samples are collected in the same manner as the surface water samples.

These monthly samples are analyzed for gamma-emitting radionuclides, gross beta activity, and tritium. The samples collected by the automatic sampling device are taken directly from the river at the intake structure. Since the sample at this point is raw water, the upstream surface water sample is used as a control sample for drinking water.

Groundwater is sampled from one onsite well down gradient from the plant, one onsite well up gradient from the plant, and four additional onsite ground water monitoring wells located along underground discharge lines. The onsite wells are sampled with a continuous sampling system.

A composite sample is collected from the onsite wells every four weeks and analyzed for gamma-emitting radionuclides, gross beta activity, and tritium content. In addition, a grab sample is collected every four weeks from a private well in an area unaffected by WBN. The grab sample is also analyzed for gross beta activity, gamma-emitting radionuclides, and for tritium.

Samples of commercial and game fish species are collected semiannually from each of two reservoirs: the reservoir on which the plant is located (Chickamauga Reservoir) and the upstream reservoir (Watts Bar Reservoir). The samples are collected using a combination of netting techniques and electrofishing. The ODCM specifies analysis of the edible portion of the fish. To comply with this requirement, filleted portions are taken from several fish of each species. The samples are analyzed by gamma spectroscopy.

Samples of shoreline sediment are collected from recreation areas in the vicinity of the plant.

The samples are dried, ground, and analyzed by gamma spectroscopy.

Samples of sediment are also collected from the onsite Yard Holding Pond. A total of five samples were collected in 2006. The samples are dried, ground, and analyzed by gamma spectroscopy.

Results Gross beta activity was detectable above the nominal LLD in most of the surface water samples.

The gross beta concentrations averaged 2.8 pCi/liter in downstream samples and 2.7 pCi/liter in upstream samples. These levels were consistent with results found during the preoperational monitoring program. Tritium at a concentration of 588 pCiiL was detected in one sample collected from the downstream collection location at TRM 517.9. The tritium was detected in the surface water during a period of unusually low river flow. A summary table of the results for surface water samples is shown in Table H-13.

No fission or activation products were identified by the gamma analysis of drinking water samples from either of two downstream monitoring locations. Average gross beta activityat downstream stations was 2.5 pCi/liter and the average for upstream station was 2.7 pCi/liter.

Low levels of tritium were detected in a total of six samples collected from the two downstream public water sampling locations. The measurable tritium levels occurred during a period of usually low river flows. The highest tritium concentration detected was 817 pCi/L. This concentration is less than five percent of EPA safe drinking water limit of 20,000 pCiiL. The results are shown in Table H-14. Trend plots of the gross beta activity in surface water and drinking water samples from 1977 through 2006 are presented in Figure H-4.

The gamma isotopic analysis of ground water samples identified only naturally occurring radionuclides. Gross beta concentrations in samples from the onsite indicator locations averaged 3.6 pCi/liter. The average gross beta activity for samples from the control locations was 2.5 pCi/liter. Tritium was detected in samples from the onsite monitoring wells located near plant discharge lines. The tritium in onsite ground water was the result of previously identified leaks from plant systems. Repairs were made to resolve the leaks but the plume of contaminated ground water continues to move slowly across the site toward the river. Thelhighest tritium concentration in samples from these monitoring locations was 12,600 pCi/L. There was no tritium detected in the onsite up gradient well or the offsite ground water monitoring location.

The results are presented in Table H-15.

Measurable levels of Cs-137 were identified in most of the fish samples. The maximum Cs-137 concentration was 0.11 pCi/g measured in commercial fish collected at the upstream control location. Other radioisotopes found in fish were naturally occurring, with the most notable being K-40. The results are summarized in Tables H-16 and H-17. Trend plots of the annual average Cs-137 concentrations measured in fish samples are presented in Figure H-5.

The Cs- 137 activities are consistent with preoperational results produced by fallout or effluents from other nuclear facilities.

Low levels of Cs-137 consistent with the concentrations present in the environment as the result of past nuclear weapons testing or other nuclear operations in the area were measured in samples of shoreline sediment. The results for the analysis of shoreline sediment is presented in Table H-18. Trend plots of the average concentration of Cs-137 in shoreline sediment are presented in Figure H-6.

Consistent with previous monitoring conducted for the onsite ponds, Cs-137 was detected in the sediment samples. The average of the Cs-137 levels measured in sediment from the onsite ponds was 0.12 pCi/gm. In addition, Co-58, Co-60, Cs-134, and Sb-125 were also detected in some of the samples collected from the Yard Holding Pond. The results for the analysis of pond sediment samples are provided in Table H-19. Since these radionuclides were present in relatively low concentrations and confined to the Yard Holding Pond located in the owner controlled area not open to the general public, the presence of these radionuclides would not represent any increased risk of exposure to the general public.

ASSESSMENT AND EVALUATION Potential doses to the public are estimated from measured effluents using computer models.

These models were developed by TVA and are based on guidance provided by the NRC in Regulatory Guide 1.109 for determining the potential dose to individuals and populations living in the vicinity of the plant. The results of the effluent dose calculations are reported in the Annual Radiological Effluent Release Report. The doses calculated are a representation of the dose to a "maximum exposed individual." Some of the factors used in these calculations (such as ingestion rates) are maximum expected values which will tend to overestimate the dose to the "hypothetical" person. The calculated maximum dose due to plant effluents are small fractions of the applicable regulatory limits. In reality, the expected dose to actual individuals is significantly lower.

Based on the very low concentrations of radionuclides actually present in the plant effluents, radioactivity levels measured in the environment as result of plant operations are expected to be negligible. The results for the radiological environmental monitoring conducted for the WBN 2006 operations confirm this expectation.

Results As stated earlier in this report, the estimated increase in radiation dose equivalent to the general public resulting from the operation of WBN is insignificant when compared to the dose from natural background radiation. The results from each environmental sample are compared with the concentrations from the corresponding control stations and appropriate preoperational and background data to determine influences from the plant. During this report period, Cs-137 was detected in shoreline sediment, soil, and fish collected for the WBN program. The Cs-137 concentrations measured were consistent with levels measured during the preoperational monitoring program. The low levels of tritium measured in water samples from Chickamauga Reservoir represented concentrations that were a small fraction of the EPA drinking water limit.

The levels of tritium detected in the onsite ground water monitoring wells and the radionuclides measured in samples of sediment from the Yard Holding Pond do not represent an increase risk of exposure to the public. These radionuclides were limited to the owner controlled area and would not present an exposure pathway for the general public.

Conclusions It is concluded from the above analysis of environmental samples and from the trend plots presented in Appendix H, that exposure to members of the general public which may have been attributable to WIBN is negligible. The radioactivity reported herein is primarily the result of fallout or natural background. Any activity which may be present in the environment as a result of plant operations does not represent a significant contribution to the exposure of Members of the Public.

REFERENCES

1. Merril Eisenbud, Environmental Radioactivity, Academic Press, Inc., New York, NY, 1987.

2. National Council on Radiation Protection and Measurements, Report No. 93, "Ionizing Radiation Exposure of the Population of the United States," September 1987.

3. United States Nuclear Regulatory Commission, Regulatory Guide 8.29, "Instruction Concerning Risks from Occupational Radiation Exposure," July 1981.

Table 1 COMPARISON OF PROGRAM LOWER LIMITS OF DETECTION WITH THE REGULATORY LIMITS FOR MAXIMUM ANNUAL AVERAGE EFFLUENT CONCENTRATIONS RELEASED TO UNRESTRICTED AREAS AND REPORTING LEVELS Concentrations in Water, pCi/Liter Concentrations in Air, pCi/Cubic Meter Effluent Reporting Lower limit Effluent Reporting Lower limit Concentration 1 Level 2 of Detection3 Concentration' Level 2 of Detection3 H-3 1,000,000 20,000 300 100,000 3.00 Cr-51 500,000 45 30,000 0.02 Mn-54 30,000 1,000 5 1,000 0.005 Co-58 20,000 1,000 5 1,000 0.005 Co-60 3,000 300 5 50 0.005 Zn-65 5,000 300 10 400 0.005 Sr-89 8,000 5 1,000 0.0011 Sr-90 500 2 6 0.0004 Nb-95 30,000 400 5 2,000 0.005 Zr-95 20,000 400 10 400 0.005 Ru-103 30,000 5 900 0.005 Ru-106 3,000 40 20 0.02 1-131 1,000 2 0.4 200 0.9 0.03 Cs-134 900 30 5 200 10 0.005 Cs-137 1,000 50 5 200 20 0.005 Ce-144 3,000 30 40 0.01 Ba-140 8,000 200 25 2,000 0.015 La-140 9,000 200 10 2,000 0.01 Note: 1pCi = 3.7 x10-2 Bq.

Note: For those reporting levels that are blank, no value is given in the reference.

1 Source: Table 2 of Appendix B to 10 CFR 20.1001-20.2401 2 Source: WBN Offsite Dose Calculation Manual, Table 2.3-2 3 Source: Table E-1 of this report.

fI

(?LOUISVILLE TENNESSEE VALLEY REGIQI (TVA NUCLEAR PLANT SITES) t!J Ii~ I ("T1 I

! J.

Figure 2 ENVIRONMENTAL EXPOSURE PATHWAYS OF MAN DUE TO RELEASES OF RADIOACTIVE MATERIAL TO THE ATMOSPHERE AND LAKE.

ere Airborne Releases Plume Exposure 7IŽ7 Liquid Releases Diluted By Lake MAN H

Consumed By Man Animals (Milk,Meat) Shoreline Exposure Consumed Drikin By Animals Drinking Water

]Fish Vegetation Uptake From Soil APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM AND SAMPLING LOCATIONS Table A-I WATTS BAR NUCLEAR PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Exposure Pathway Number of Samples and Sampling and Type and Frequency and/or Sample Locationsb Collection Frequency of Analysis

1. AIRBORNE

a. Particulates 4 samples from locations (in different Continuous sampler operation with Analyze for gross beta radioactivity sectors) at or near the site boundary sample collection weekly (more greater than or equal to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> (LM-1, 2, 3, and 4). (frequently if required by dust following filter change. Perform loading). gamma isotopic analysis on each sample if gross beta is greater than 10 times yearly mean of control sample.

Composite at least once per 31 days (by location) for gamma scan.

4 samples from communities approximately 6-10 miles from the plant (PM-2, 3, 4, and 5).

2 samples from control locations greater than 10 miles from the plant (RM-2 and 3).

b. Radioiodine Samples from same locations as air Continuous sampler operation with 1-131 at least once per 7 days.

particulates. filter collection weekly. Analysis is performed by gamma spectroscopy.

c. Atmospheric 4 samples from locations (in different Continuous sampler operation with Analyze each sample for tritium.

Moisture sectors) at or near the site boundary sample collection biweekly.

(LM-1, 2, 3, and 4) 2 samples from communities approximately 4-10 miles distance from the plant (PM-2, 5).

Table A-1 WATTS BAR NUCLEAR PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAMa Exposure Pathway Number of Samples and Sampling and Type and Frequency and/or Sample Locationsb Collection Frequency of Analysis

c. Atmospheric 2 samples from control location Moisture (Cont.) greater than 10 miles from the plant (RM-2 and RM-3).

d. Rainwater Samples from same locations as air Rainwater collected continuously with Analyzed for gamma activity only if particulates. composite sample taken monthly. radioactivity in other media indicates the presence of increased levels of fallout.

e. Soil Samples from same location as air Once per year. Gamma scan, Sr-89, Sr-90 once per particulates. year.

2. DIRECT 2 or more dosimeters (TLDs) placed At least once per 92 days. Gamma dose at least once per 92 At or near the site boundary in each days.

of the 16 sectors.

2 or more dosimeters placed at stations located approximately 5 miles from the plant in each of the 16 sectors.

2 or more dosimeters in at least 8 additional locations of special interest, including at least 2 control stations.

Table A- I WATTS BAR NUCLEAR PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAMa Exposure Pathway Number of Samples and Sampling and Type and Frequency and/or Sample Locationsb Collection Frequency of Analysis

3. WATERBORNE

a. Surface 2 samples downstream from plant Collected by automatic sequential- Gross beta, gamma scan, and tritium discharge (TRM 517.9 and TRM type samplerc with composite samples analysis of each sample.

523.1). collected over a period of approximately 31 days.

1 sample at a control location upstream from the plant discharge (TRM 529.3).

b. Ground Five sampling locations from Collected by automatic sequential- Gross beta, gamma scan, and tritium groundwater monitoring wells type sampler with composite samples analysis of each sample.

adjacent to the plant (Wells No. 1, A, collected over a period of B, C, and D). approximately 31 days.

I sample from ground water source up Same as Well No. 1. Gross beta, gamma scan, and tritium gradient (Well No. 5). analysis of each sample.

1 sample from ground water source up Grab sample at least once per 31 Gross beta, gamma scan, and tritium gradient (Farm L). days. analysis of each sample.

c. Drinking 1 sample at the first two potable Collected by automatic sequential- Gross beta, gamma scan, and tritium surface water supplies, downstream type samplerc with composite sample analysis of each sample.

from the plant (TRM 503.8 and TRM collected monthly.

473.0).

Table A- I WATTS BAR NUCLEAR PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAMa Exposure Pathway Number of Samples and Sampling and Type and Frequency and/or Sample Locationsb Collection Frequency of Analysis

c. Drinking (Con't) 1 sample at a control location TRM 529 .3

d. Sediment from 1 sample downstream from plant At least once per 184 days. Gamma scan of each sample.

Shoreline Discharge (TRM 513.0).

1 sample from a control location upstream from plant discharge (TRM 530.2).

e. Pond Sediment 1 sample from at least three locations At least once per year. Gamma scan of each sample.

in the Yard Holding Pond.

5. INGESTION

a. Milk 1 sample from milk producing animals Every 2 weeks. 1-131 and gamma analysis on each in each of 1-3 areas indicated by the sample. Sr-89 and Sr-90 once per cow census were doses are calculated quarter.

to be highest.

1 or more samples from control locations.

b. Fish One sample of commercially important At least once per 184 days. Gamma scan on edible portions.

species and one sample of recreationally important species.

One sample of each species from Chickamauga and Watts Bar Reservoirs.

Table A-I WATTS BAR NUCLEAR PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Exposure Pathway Number of Samples and Sampling and Type and Frequency and/or Sample Locationsb Collection Frequency of Analysis

c. Vegetatione Samples from farms producing milk At least once per 31 day. 1-131 analysis and gamma scan of (Pasturage and but not providing a milk sample. each sample.

grass)

d. Food Products 1 sample each of principal food Annually at time of harvest. The Gamma scan on edible portion.

products grown at private gardens types of foods available for sampling and/or farms in the immediate will vary. Following is a list of vicinity of the plant. typical foods which may be available:

Cabbage, Lettuce and/or Greens Corn Green Beans Potatoes Tomatoes

a. The sampling program outlined in this table is that which was in effect at the end of 2006.

b. Sample locations are shown on Figures A-l, A-2, A-3.

c. Samples shall be collected by collecting an aliquot at intervals not exceeding 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.

d. The samples collected at TRMs 503.8 and 473.0 are taken from the raw water supply, therefore, the upstream surface water sample will be considered the control sample for drinking water.

e. Vegetation sampling is applicable only for farms that meet the criteria for milk sampling and when milk sampling cannot be performed.

Table A-2 WATTS BAR NUCLEAR PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM SAMPLING LOCATIONS Map Approximate Indicator (I)

Location Distance or Samples Numbera Station Sector (Miles). Control Collectedb IC_

2 PM-2 NW 7.0 I AP,CF,R,SAM 3 PM-3 NNE 10.4 I AP,CF,R,S 4 PM-4 NE/ENEc 7.6 I AP,CF,R,S 5 PM-5 S 8.0 I AP,CF,R,S,AM 6 RM-2 SW 15.0 C AP,CF,R,S,AM 7 RM-3 NNW 15.0 C AP,CF,R,S,AM 8 LM-1 SSW 0.5 I AP,CF,R,SAM 9 LM-2 NNE 0.4 AP,CF,R,SAM 10 LM-3 NNE 1.9 I AP,CF,R,S,AM 11 LM-4 SE 0.9 AP,CF,R,S,AM 12 Farm L SSW 1.3 M,W 15 Farm K ENE 11.6 C M 18 Well #1 S 0.6 I W 20 Farm N ESE 4.1 I M 22 Farm EH SSW 24.0 C M 23 Well #5 N 0.5 C W 25 TRM 517.9 9.9 I SW 26 TRM 523.1 4.7e I SW 27 TRM 529.3 1.5e C SW,PWf 31 TRM 473.0 54.8e I PW (C. F. Industries) 32 TRM 513.0 14.8e I sS 33 TRM 530.2 2.4e C SS 35 TRM 503.8 24.0e I PW (Dayton) 38 Chickamauga I F Reservoir 39 Watts Bar Reservoir C F 81 Yard Pond SSE/S/SSW Onsite PS 82 Well A SSE 0.6 W 83 Well B SSE 0.5 W 84 Well C ESE 0.3 W 85 Well D SSE 0.4 W

a. See Figures A-I, A-2, and A-3

b. Sample codes:

AM = Atmospheric Moisture AP = Air particulate filter PW = Public Water SS = Shoreline sediment CF = Charcoal filter PS = Pond Sediment SW = Surface water F = Fish R = Rainwater W = Well water M = Milk S = Soil

c. Station located on the boundary between these two sectors.

d. A control for well water.

e. Distance from the plant discharge (TRM 527.8)

f. The surface water sample is also used as a control for public water.

Table A-3 WATTS BAR NUCLEAR PLANT THERMOLUMINESCENT DOSIMETER (TLD) LOCATIONS Mapa Approximate Onsite (On)b Location Distance or Number Station Sector (miles) Offsite (Off) 2 NW-3 NW 7.0 Off 3 NNE-3 NNE 10.4 Off 4 ENE-3 NE/ENE 7.6 Off 5 S-3 S 7.8 Off 6 SW-3 SW 15.0 Off 7 NNW-4 NNW 15.0 Off 10 NNE-1A NNE 1.9 On 11 SE-IA SE 0.9 On 12 SSW-2 SSW 1.3 On 14 W-2 W 4.8 Off 15 E-3 E 15.0 Off 40 N-i N 1.2 On 41 N-2 N 4.7 Off 42 NNE-1 NNE 1.2 On 43 NNE-2 NNE 4.1 Off 44 NE-i NE 0.9 On 45 NE-2 NE 2.9 Off 46 NE-3 NE 6.1 Off 47 ENE-1 ENE 0.7 On 48 ENE-2 ENE 5.8 Off 49 E-1 E 1.3 On 50 E-2 E 5.0 Off 51 ESE-1 ESE 1.2 On 52 ESE-2 ESE 4.4 Off 54 SE-2 SE 5.3 Off 55 SSE-IA SSE 0.6 On 56 SSE-2 SSE 5.8 Off 57 S-I S 0.7 On 58 S-2 S 4.8 Off 59 SSW-1 SSW 0.8 On 60 SSW-3 SSW 5.0 Off 62 SW-1 SS 0.8 On 63 SW-2 SW 5.3 Off 64 WSW-1 WSW 0.9 On 65 WSW-2 WSW 3.9 Off 66 W-1 W 0.9 On 67 WNW-1 WNW 0.9 On 68 WNW-2 WNW 4.9 Off 69 NW-I NW 1.1 On 70 NW-2 NW 4.7 Off 71 NNW-1 NNW 1.0 On 72 NNW-2 NNW 4.5 Off 73 NNW-3 NNW 7.0 Off 74 ENE-2A ENE 3.5 Off 75 SE-2A SE 3.1 Off 76 S-2A S 2.0 Off 77 W-2A W 3.2 Off 78 NW-2A NW 3.0 Off 79 SSE-1 SE 0.5 On

a. See Figures A-I, A-2, and A-3.

b. TLDs designated "onsite" are located 2 miles or less from the plant; "offsite" are located more than 2 miles from the plant.

Figure A-1 Radiological Environmental Sampling Locations Within 1 Mile of the Plant 348.75 N 11.25 71 .6.25 33.75 X*27 56.25 47 78.75 WATTS BAR

• ** 101.25

\07

_113.75 146.25 SW 191.25 s 168.75 S E Scl SMScale 0 Mile1 Figure A-2 Radiological Environmental Sampling Locations From 1 to 5 Miles From The Plant 348.75 N SSE Scale 0 1 Miles a

Figure A-3 Radiological Environmental Sampling Locations Greater Than 5 Miles From the Plant 348.75 N 11.25

.. 326.26 -E 33.7,=

303.75 W ~N W t, NNENU~

WNW SAT M. SWEETWATE 281.25 -7 "RIN 73 3 lilTYh61 S..al 0 5 10 15 20 25 Miles APPENDIX B 2006 PROGRAM MODIFICATIONS Appendix B Radiological Environmental Monitoring Program Modification Late in 2006, the dairy farm located 3.8 miles ESE went out of business. Currently there is no replacement sampling location within the five-mile radius.

APPENDIX C PROGRAM DEVIATIONS Appendix C Program Deviations Problems with sampling equipment resulted in sample unavailability or inadequate sample volumes for four sets of air particulate filter and charcoal cartridge samples during 2006. Milk sampling could not be performed for the last four sampling periods at one of the dairy farm locations. Table C-1 provides additional details on the missed samples resulting from these equipment problems.

Table C-1 Radiological Environmental Monitoring Program Deviations Date Station Location Remarks 09/06/06 LM-4 0.9 miles SE The total sample volume for air filter and charcoal cartridge samples was not adequate due to a failure of the sampling pump. The problem was a broken drive belt on the sampler motor. The belt was replaced and the system returned to normal operation for the next sampling cycle. The missed samples were documented with PER 110334.

10/10/06 PM-3 10.4 miles NNE The total sample volume for air filter and charcoal cartridge

& samples was not adequate due to a problem with the sampling 10/16/06 pump. The problem was a failed drive motor. A replacement motor had to be ordered delaying repairs into the next sampling cycle. The missed samples were documented with PER 112930.

11/08/06 Farm Mu 3.8 miles ESE The dairy farm at this location went out of business. The last sample was collected from this location on 10/25/06.

11/29/06 LM-4 0.9 miles SE The total sample volume for air filter and charcoal cartridge samples was not adequate due to a failure of the sampling pump. The problem was a failure of the drive motor The motor was replaced and the system returned to normal operation for the next sampling cycle. The missed samples were documented with PER 115659.

APPENDIX D ANALYTICAL PROCEDURES

Appendix D Analytical Procedures Analyses of environmental samples are performed by the radioanalytical laboratory located at the Western Area Radiological Laboratory facility in Muscle Shoals, Alabama. Analysis procedures are based on accepted methods. A summary of the analysis techniques and methodology follows.

The gross beta measurements are made with an automatic low background counting system.

Normal counting times are 50 minutes. Water samples are prepared by evaporating 500 ml of samples to near dryness, transferring to a stainless steel planchet, and completing the evaporation process. Air particulate filters are counted directly in a shallow planchet.

The specific analysis of 1-131 in milk is performed by first isolating and purifying the iodine by radiochemical separation and then counting the final precipitate on a beta-gamma coincidence counting system. The normal count time is 50 minutes. With the beta-gamma coincidence counting system, background counts are virtually eliminated and extremely low levels of activity can be detected.

After a radiochemical separation, samples analyzed for Sr-89, 90 are counted on a low background beta counting system. The sample is counted a second time after a 7-day ingrowth period. From the two counts the Sr-89 and Sr-90 concentrations can be determined.

Water samples are analyzed for tritium content by first distilling a portion of the sample and then counting by liquid scintillation. A commercially available scintillation cocktail is used.

Gamma analyses are performed in various counting geometries depending on the sample type and volume. All gamma counts are obtained with germanium type detectors interfaced with a high resolution gamma spectroscopy system. Spectral data reduction is performed by the computer program HYPERMET.

The charcoal cartridges used to sample gaseous radioiodine are analyzed by gamma spectroscopy using a high resolution gamma spectroscopy system with germanium detectors.

Atmospheric moisture samples are collected on silica gel from a metered air flow. The moisture is released from the silica gel by heating and a portion of the distillate is counted by liquid scintillation for tritium using commercially available scintillation cocktail.

The necessary efficiency values, weight-efficiency curves, and geometry tables are established and maintained on each detector and counting system. A series of daily and periodic quality control checks are performed to monitor counting instrumentation. System logbooks and control charts are used to document the results of the quality control checks.

APPENDIX E NOMINAL LOWER LIMITS OF DETECTION (LLD)

Appendix E Nominal Lower Limits of Detection A number of factors influence the LLD, including sample size, count time, counting efficiency, chemical processes, radioactive decay factors, and interfering isotopes encountered in the sample.

The most probable values for these factors have been evaluated for the various analyses performed in the environmental monitoring program. The nominal LLDs calculated from these values, in accordance with the methodology prescribed in the ODCM, are presented in Table E-1. The maximum values for the lower limits of detection specified in the ODCM are shown in Table E-2.

The nominal LLDs are also presented in the data tables. For analyses for which nominal LLDs have not been established, an LLD of zero is assumed in determining if a measured activity is greater than the LLD.

TABLE E-l Nominal LLD Values A. Radiochemical Procedures Sediment Air Filters Water Milk Wet Vegetation and Soil (pCi/rm3) (iLD (Cp__I) (pCi/Kg wet) (pCi/g dry)

Gross Beta 0.002 1.9 Tritium 3.0 300 Iodine-131 0.4 0.4 6.0 Strontium-89 0.0011 5.0 3.5 31.0 1.6 Strontium-90 0.0004 2.0 2.0 12.0 0.4

Table E-l Nominal LLD Values B. Gamma Analyses Foods Particulate Charcoal Water Vegetation Wet Soil and Tomatoes Filter Filter and Milk and Grain Vegetation Sediment Fish Clam Flesh Potatoes, etc.

pCi/m3 pCi/m3 pCi/L pCilg, dry pCi/kg, wet pCg,dy pCi/g, dry pCi/g, dry pCi/kg, wet Ce-141 .005 .02 10 .07 35 .10 .07 .35 20 Ce-144 .01 .07 30 .15 115 .20 .15 .85 60 Cr-51 .02 0.15 45 .30 200 .35 .30 2.40 95 1-131 .005 0.03 10 .20 60 .25 .20 1.70 20 Ru-103 .005 0.02 5 .03 25 .03 .03 .25 25 Ru-106 .02 0.12 40 .15 190 .20 .15 1.25 90 Cs-134 .005 0.02 5 .03 30 .03 .03 .14 10 Cs-137 .005 0.02 5 .03 25 .03 .03 .15 10 Zr-95 .005 0.03 10 .05 45 .05 .05 .45 45 Nb-95 .005 0.02 5 .25 30 .04 .25 .25 10 Co-58 .005 0.02 5 .03 20 .03 .03 .25 10 Mn-54 .005 0.02 5 .03 20 .03 .03 .20 10 Zn-65 .005 0.03 10 .05 45 .05 .05 .40 45 Co-60 .005 0.02 5 .03 20 .03 .03 .20 10 K-40 .04 0.30 100 .40 400 .75 .40 3.50 250 Ba-140 .015 0.07 25 .30 130 .30 .30 2.40 50 La-140 .01 0.04 10 .20 50 .20 .20 1.40 25 Fe-59 .005 0.04 10 .08 40 .05 .08 .45 25 Be-7 .02 0.15 45 .25 200 .25 .25 1.90 90 Pb-212 .005 0.03 15 .04 40 .10 .04 .30 40 Pb-214 .005 0.07 20 .50 80 .15 .50 .10 80 Bi-214 .005 0.05 20 .10 55 .15 .10 .50 40 Bi-212 .02 0.20 50 .25 250 .45 .25 2.00 130 TI-208 .002 0.02 10 .03 30 .06 .03 .25 30 Ra-224 -- -- -- -- -- .75 -- -- --

Ra-226 -- -- -- -- -- .15 -- -- --

Ac-228 .01 0.07 20 .10 70 .25 .10 .75 50

Table E-2 Maximum Values for the Lower Limits of Detection (LLD)

Specified by the WBN Offsite Dose Calculation Manual Airborne Particulate Food Water or Gases Fish Milk Products Sediment Analysis PCi/L pCi/rn3 pCi/kg, wet DCi/L pCi/kg, wet pCi/kg, dry grossbeta 4 1 x 10-2 N.A. N.A. N.A. N.A.

H-3 2000a N.A. N.A. N.A. N.A. N.A.

Mn-54 15 N.A. 130. N.A. N.A. N.A.

Fe-59 30 N.A. 260 N.A. N.A. N.A.

Co-58,60 15 N.A. 130 N.A. N.A. N.A.

Zn-65 30 N.A. 260 N.A. N.A. N.A.

Zr-95 30 N.A. N.A. N.A. N.A. N.A.

Nb-95 15 N.A. N.A. N.A. N.A. N.A.

1-131 1b 7 x 10-2 N.A. 1 60 N.A.

Cs-134 15 5 x10- 2 130 15 60 150 Cs-137 18 6 x 10-2 150 18 80 180 Ba-140 60 N.A. N.A. 60 N.A. N.A.

La-140 15 N.A. N.A. 15 N.A. N.A.

a. If no drinking water pathway exists, a value of 3000 pCi/liter may be used.

b. If no drinking water pathway exists, a value of 15 pCi/liter may be used.

APPENDIX F QUALITY ASSURANCE/QUALITY CONTROL PROGRAM Appendix F Quality Assurance/Quality Control Program A thorough quality assurance program is employed by the laboratory to ensure that the environmental monitoring data are reliable. This program includes the use of written, approved procedures in performing the work, a complete training and qualification process, internal self assessments of program performance, audits by various external organizations, and a laboratory quality control program.

The quality control program employed by the radioanalytical laboratory is designed to ensure that the sampling and analysis process is working as intended. The program includes equipment checks and the analysis of quality control samples along with routine samples.

Radiation detection devices can be tested in a number of ways. There are two primary tests which are performed on all devices. In the first type, the device is operated without a sample on the detector to determine the background count rate. The background counts are usually low values and are due to machine noise, cosmic rays, trace amounts of radioactivity in the materials used to construct the detector, or terrestrial sources. Charts of background counts are kept and monitored to ensure that no unusually high or low values are encountered.

In the second test, the device is operated with a known amount of radioactivity present. The number of counts registered from such a radioactive standard should be very reproducible. These reproducibility checks are also monitored to ensure that they are neither higher nor lower than expected. When counts from either test fall outside the expected range, the device is inspected for malfunction or contamination. It is not placed into service until it is operating properly.

In addition to these two general checks, other quality control checks are performed on the variety of detectors used in the laboratory. The exact nature of these checks depends on the type of device and the method it uses to detect radiation or store the information obtained.

Quality control samples of a variety of types are used by the laboratory to verify the performance of different portions of the analytical process. These quality control samples may be blanks, replicate samples, blind samples, or cross-checks.

Blanks are samples which contain no measurable radioactivity or no activity of the type being measured. Such samples are analyzed to determine whether there is any contamination of equipment or commercial laboratory chemicals, cross-contamination in the chemical process, or interference from isotopes other than the one being measured.

Duplicate samples are generated at random by the sample computer program which schedules the collection of the routine samples. For example, if the routine program calls for four milk samples every week, on a random basis each farm might provide an additional sample several times a year. These duplicate samples are analyzed along with other routine samples. They provide information about the variability of radioactive content in the various sample media.

If enough sample is available for a particular analysis, the laboratory personnel can split it into two portions. Such a sample can provide information about the variability of the analytical process since two identical portions of material are analyzed side by side.

Analytical knowns are another category of quality control sample. A known amount of radioactivity is added to a sample medium. Whenever possible, the analytical knowns contain the same amount of radioactivity each time they are run. In this way, the lab staff has immediate knowledge of the quality of the measurement process. A portion of these samples are also blanks.

Blind spikes are samples containing radioactivity which are introduced into the analysis process disguised as ordinary environmental samples. The lab staff does not know the samples contain radioactivity. Since the bulk of the ordinary workload of the environmental laboratory contains no measurable activity or only naturally occurring radioisotopes, blind spikes can be used to test the detection capability of the laboratory or they can be used to test the data review process. If an analysis routinely generates numerous zeroes for a particular isotope, the presence of a positive result will be brought to the attention of the laboratory supervisor in the daily review process. Blind spikes test this process since they contain radioactivity at levels high enough to be detected. Furthermore, the activity can be put into such samples at the extreme limit of detection (near the LLD) to determine whether or not the laboratory can find any unusual radioactivity whatsoever.

Another category of quality control samples is internal cross-checks. These samples have a known amount of radioactivity added and are presented to the lab staff labeled as cross-check samples. This means that the quality control staff knows the radioactive content or "right answer" but the personnel performing the analyses do not. They are aware they are being tested.

Such samples test the best performance of the laboratory by determining if the staff can find the "right answer". These samples provide information about the accuracy of the measurement process. Further information is available about the variability of the process if multiple analyses are requested on the same sample. Like blind spikes or analytical knowns, these samples can also be spiked with low levels of activity to test detection limits. During 2006, all analysis results for internal cross-check samples were within agreement limits when compared to the known value.

To provide for interlaboratory comparison program cross-check samples, the laboratory participated in an environmental level cross-check program available through Analytics Incorporated. The results of TVA's participation in this program are presented in Table F-1.

Quality control data are routinely collected, examined, and reported to laboratory supervisory personnel. They are checked for trends, problem areas, or other indications that a portion of the analytical process needs correction or improvement. The end result is a measurement process that provides reliable and verifiable data and is sensitive enough to measure the presence of radioactivity far below the levels which could be harmful to humans.

Table F-I Results For 2006 External Cross Checks Results Test Period Sample Type / Analysis Known TVA Agreement First Quarter Water (pCi/L)

C ross Beta 153 177 1.15 First Quarter Milk (pCi/Liter) 1311 89 76.7 74.7(a) 0.97 Sr 99 113 1.14 90Sr 10.8 11.8 1.09 First Quarter Water (pCi/L) 1311 67.4 70.3 1.04 141Ce 86.8 87.5 1.01 SICr 34 234 244 1.04 1 Cs 101 96.2 0.95 137Cs 74.3 74 1.00 58 Co 87.5 89.3 1.02 54Mn 78.1 80.6 1.03 59Fe 72.4 76.1 1.05 65Zn 148 146 0.97 60Co 107 108 1.01 First Quarter Water (pCi/L) 3 H 4210 4630 1.10 Third Quarter Water (pCi/L) 3 H 11000 11121 1.01 Third Quarter Sand (pCi/gram) 14ICe 0.121 0.125 1.03 5 'Cr 0.398 0.387 0.97 134Cs 0.120 0.139 1.16 137Cs 55 0.247 0.235 0.95 Co 0.154 0.155 1.00 54Mn 59 0.159 0.172 1.08 Fe 0.062 0.053 0.86 65Zn 6 0.204 0.198 0.97 0Co 0.189 0.189 1.00 Third Quarter Air Filter (pCi/filter)

Gross Beta 86.0 81.4 0.95 Third Quarter Air Filter (pCi/filter) 11Ce1 79.1 74.8 0.95 5 Cr 259 260.9 1.01

'34Cs 78.2 66 0.84 137Cs 161 152 0.94 5"Co 101 96.9 0.96 54Mn 104 108.4 1.05 59Fe 40.2 35.4 0.88 65Zn 133 135 1.01 60Co 123 117.8 0.96 (a) Activity was originally calculated using incorrect sample volume. The value reported here is the result of calculation with correct volume.

APPENDIX G LAND USE SURVEY Appendix G Land Use Survey A land use survey was conducted in accordance with the provisions of ODCM Control 1.3.2 to identify the location of the nearest milk animal, the nearest residence, and the nearest garden of greater than 500 square feet producing fresh leafy vegetables in each of 16 meteorological sectors within a distance of 5 miles from the plant.

The land use survey was conducted between April 1 and October 1 using appropriate techniques such as door-to-door survey, mail survey, telephone survey, aerial survey, or information from local agricultural authorities or other reliable sources.

From the data of the surveys, relative radiation doses were projected for individuals near the plant. Doses from air submersion were calculated for the nearest resident in each sector, while doses from drinking milk or eating foods produced near the plant were calculated for the areas with milk producing animals and gardens, respectively. These doses were calculated using design basis source terms and historical meteorological data. They also assume that the effluent releases are equivalent to the design basis source terms. The calculated doses are relative in nature and do not reflect actual exposures received by individuals living near WBN.

In response to the 2006 WBN land use survey, annual doses were calculated for air submersion, vegetable ingestion, and milk ingestion. There were no changes in the location of the nearest resident in 2006.

Doses calculated for ingestion of home grown foods changed in six sectors compared to the results calculated in 2005 due to changes in the locations of the nearest garden.

For milk ingestion, projected doses were consistent with those calculated for 2005. Except for the farm where the owner does not want to participate in the program (Farm Ho), milk samples are being collected from the three farms where the calculated doses are highest. One of the farms providing a milk sample is between Farm Ho and the plant.

The results of the 2006 land use survey and resulting relative projected annual dose calculations documented that there were no significant changes in land use of unrestricted areas. No required changes in the sampling locations for the radiological environmental monitoring program were identified as result of the land use survey.

Tables G-1, G-2, and G-3 compare results of the relative projected annual dose calculations for 2005 and 2006.

Table G- I Watts Bar Nuclear Plant Relative Projected Annual Air Submersion Dose to the Nearest Residence Within 5 Miles of Plant' mrem/year 2005 2006 Approximate Approximate Sector Distance (Miles) Annual Dose Distance (Miles) Annual Dose N 1.3 0.24 1.3 0.24 NNE 2.3 0.20 2.3 0.20 NE 2.1 0.19 2.1 0.19 ENE 1.5 0.31 1.5 0.31 E 2.0 0.18 2.0 0.18 ESE 2.8 0.12 2.8 0.12 SE 0.9 0.76 0.9 0.76 SSE 1.0 0.38 1.0 0.38 S 1.0 0.37 1.0 0.37 SSW 1.2 0.29 1.2 0.29 SW 2.7 0.09 2.7 0.09 WSW 1.3 0.38 1.3 0.38 W 1.8 0.07 1.8 0.07 WNS 1.0 0.17 1.0 0.17 NW 1.3 0.09 1.3 0.09 NNW 2.7 0.03 2.7 0.03

a. Assumes the effluent releases are equivalent to design basis source terms.

Table G-2 Watts Bar Nuclear Plant Relative Projected Annual Ingestion Dose to Child's Bone Organ from Ingestion of Home-Grown Foods Nearest Garden Within 5 Miles of Planta mrem/year 2005 2006 Approximate Approximate Sector Distance (Miles) Annual Dose Distance (Miles) Annual Dose N 4.8 0.50 4.8 0.50 NNE 3.8 1.68 3.8 1.68 NE 2.4 3.36 2.4 3.36 ENE 3.1 1.93 3.1 1.93 E 3.4 1.63 3.1 2.00 ESE 3.8 1.57 3.8 1.57 SE 2.9 2.17 2.9 2.17 SSE 3.1 1.40 4.6 0.59 S 1.4 5.11 1.4 5.11 SSW b b SW b b WSW 1.1 7.87 2.9 1.73 W 2.1 1.20 3.2 0.59 WNW 3.6 0.26 3.7 0.23 NW 1.3 1.97 2.0 0.76 NNW 2.9 0.62 2.9 0.62

a. Assumes the effluent releases are equivalent to design basis source terms.

b. Garden not identified within 5 miles of the plant in this sector.

Table G-3 Watts Bar Nuclear Plant Relative Projected Annual Dose to Receptor Thyroid from Ingestion of Milka (Nearest Milk-Producing Animal Within 5 Miles of Plant) mrero/year Approximate Distance Annual Dose X/Q Location Sector Miles 2005 2006 s/m3 Cows Farm Mub ESE 3.7 0.08 0.08 1.14 E-6 Farm Nb ESE 4.1 0.04 0.04 9.44 E-7 Farm Lb SSW 1.3 0.27 0.27 2.36 E-6 Farm Hoc SSW 1.5 0.33 0.33 1.43 E-6

a. Assumes the plant is operating and effluent releases are equivalent to design basis source terms.

b. Milk being sampled at these locations.

C. Owner unwilling to provide samples or information. The dose calculated assumes consumption of the milk by an adult and a feeding factor equivalent to 33 percent. If milk from this location were to be consumed by teens, children or infants, the estimated doses would be 0.52, 1.07 and 2.53 mrem/year, respectively.

APPENDIX H DATA TABLES AND FIGURES Table H - 1 DIRECT RADIATION LEVELS Average External Gamma Radiation Levels at Various Distances from Watts Bar Nuclear Plant for Each Quarter - 2006 mR / Quarter (a)

Distance per annum miles Average External Gamma Radiation Levels (b) mR / yr 1st qtr 2nd qtr 3rd qtr 4th qtr 0-1 15.8+/-2.0 15.8+/-2.1 16.5+/-2.0 16.0+/-2.0 64 1-2 14.6+/-1.6 14.6+/-1.5 15.2+/-1.5 14.7+/-1.2 59 2-4 14.5+/-1.1 14.1 +/-1.0 15.0+/-1.2 14.8+/-1.2 58 4-6 14.9+/-1.6 14.9 +/- 1.6 15.5 +/- 1.8 15.2 +/- 1.6 60

>6 13.9+/- 1.8 13.6+/- 1.8 14.3 +/- 1.9 14.0 +/- 1.9 56 Average 0 - 2 miles 15.3 +/- 2.0 15.3 +/- 2.0 16.0 +/-2.0 15.5 +/- 1.9 62 (onsite)

Average

> 2 miles 14.5 +/- 1.6 14.4 +/- 1.7 15.1 +/-1.8 14.7 +/- 1.7 59 (offsite)

(a) Field periods normalized to one standard quarter (2190 hours0.0253 days <br />0.608 hours <br />0.00362 weeks <br />8.33295e-4 months <br />)

(b) Average of the individual measurements in the set +/- 1 standard deviation of the set TABLE H - 2 DIRECT RADIATION LEVELS Individual Stations at Watts Bar Nuclear Plant Environmental Radiation Levels mR / quarter Map TLD Approx 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Location Station Direction, Distance, Dec - Feb Mar - May Jun - Aug Sep - Nov Exposure Number Number degrees miles 2005-6 2006 2006 2006 mR/year 40 N-1 10 1.2 17.1 16.8 17.1 16.6 67.6 41 N-2 350 4.7 16.2 16.4 17.0 16.3 65.9 42 NNE-1 21 1.2 16.6 16.5 17.4 16.1 66.6 10 NNE-1A 22 1.9 13.1 13.2 13.9 13.7 53.9 43 NNE-2 20 4.1 13.9 13.7 14.3 14.3 56.2 3 NNE-3 17 10.4 13.4 13.3 14.0 13.6 54.4 44 NE-1 39 .9 16.9 17.1 17.4 16.9 68.3 45 NE-2 54 2.9 15.5 15.0 15.6 15.5 61.6 46 NE-3 47 6.1 12.2 12.1 12.8 12.5 49.7 47 ENE-1 74 .7 15.3 15.2 16.4 15.8 62.7 48 ENE-2 69 5.8 13.8 13.6 14.4 14.3 56.1 74 ENE-2A 69 3.5 12.7 12.2 12.7 12.7 50.2 4 ENE-3 56 7.6 13.7 13.8 14.3 14.1 55.9 49 E-1 85 1.3 13.9 14.5 14.9 14.6 57.8 50 E-2 92 5.0 15.6 15.3 15.9 15.5 62.3 15 E-3 90 15.0 17.7 17.2 17.8 17.8 70.4 51 ESE-1 109 1.2 12.4 12.6 13.0 12.9 50.9 52 ESE-2 106 4.4 17.5 17.2 17.3 17.4 69.4 11 SE-1A 138 .9 14.8 13.9 15.2 15.2 59.1 54 SE-2 128 5.3 13.7 13.1 13.4 13.7 53.9 75 SE-2A 144 3.1 14.3 14.1 15.0 14.6 58.0 79 SSE-1 146 .6 15.2 15.5 16.3 15.8 62.8 55 SSE-1A 161 .6 13.2 13.9 14.2 13.7 55.0 56 SSE-2 156 5.8 15.9 15.4 16.1 16.1 63.5

TABLE H - 2 continued DIRECT RADIATION LEVELS Individual Stations at Watts Bar Nuclear Plant Environmental Radiation Levels mR / quarter Map TLD Approx 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Location Station Direction, Distance, Dec- Feb Mar- May Jun-Aug Sep - Nov Exposure Number Number degrees miles 2005-6 2006 2006 2006 mR/year 57 S-1 182 .7 14.6 14.9 15.2 14.7 59.5 58 S-2 185 4.8 12.2 12.3 12.5 12.3 49.3 76 S-2A 177 2.0 15.9 15.1 16.7 16.5 64.2 5 S-3 185 6.2 12.7 12.5 12.8 13.0 50.9 59 ssw-1 199 .8 18.4 18.1 18.9 18.6 74.0 12 SSW-2 200 1.3 13.9 13.5 14.3 14.0 55.6 60 SSW-3 199 5.0 12.9 13.1 13.5 13.2 52.6 62 SW-1 226 .8 17.0 17.1 18.2 17.1 69.5 0

63 SW-2 220 5.3 14.6 14.1 14.8 14.4 57.9 6 SW-3 225 15.0 13.5 13.8 14.4 14.0 55.7 0D 64 WSW-1 255 .9 14.1 13.9 14.6 14.0 56.6 65 WSW-2 247 4.0 16.3 16.8 17.8 16.9 67.8 66 W-1 270 .9 15.0 15.3 16.1 15.2 61.6 14 W-2 277 4.8 12.8 13.4 13.7 13.4 53.3 77 W-2A 268 3.2 14.9 14.9 15.7 15.0 60.4 67 WNW-1 294 .9 20.5 21.0 21.4 20.8 83.6 68 WNW-2 292 4.9 16.8 17.1 18.1 17.3 69.3 69 NW-1 320 1.1 15.0 15.0 15.8 15.3 61.0 70 NW-2 313 4.7 16.1 16.3 17.4 16.5 66.3 78 NW-2A 321 3.0 13.9 13.6 14.6 14.3 56.4 2 NW-3 317 7.0 16.5 16.3 17.5 16.5 66.7 71 NNW-1 340 1.0 14.1 13.5 14.7 13.9 56.2 72 NNW-2 333 4.5 15.3 15.9 16.4 15.9 63.5 73 NNW-3 329 7.0 12.1 11.2 12.3 11.7 47.2 7 NNW-4 337 15.0 13.1 12.5 13.1 12.7 51.3

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN AIR FILTER PCI/M3 - 0.037 BQ/M3 Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GROSS BETA 516 2.OOE-03 2.14E-02 (412 / 412) PM2 SPRING CITY 2.21E-02 (52/52) 2.15E-02 (104/ 104) 8.41E 3.77E-02 7.0 MILES NW 9.48E 3.20E-02 8.47E 3.84E-02 GAMMA SCAN (GELI) 130 AC-228 1.OOE-02 104 VALUES < LLD LM3 13 VALUES < LLD 26 VALUES < LLD 1.9 MILES NNE BE-7 2.OOE-02 1.12E-01 (104 / 104) PM3 1.18E-01 (13/13) 1.18E-01 (26/26) 6.36E 1.80E-01 10.4 MILES NNE 6.36E 1.80E-01 8.OOE 1.66E-01 BI-214 5.OOE-03 1.44E-02 (71 / 104) LM3 1.78E-02 (9 /13) 1.26E-02 (20 / 26) 5.OOE 5.22E-02 1.9 MILES NNE 5.60E 4.17E-02 5.OOE 2.79E-02 K-40 4.OOE-02 4.19E-02 (1 /104) LM2 4.19E-02 (1 / 13) 26 VALUES < LLD CD 4.19E 4.19E-02 0.5 MILES N 4.19E 4.19E-02 PB-212 5.OOE-03 104 VALUES < LLD LM3 13 VALUES < LLD 26 VALUES < LLD 1.9 MILES NNE PB-214 5.OOE-03 1.44E-02 (72/104) PM5 DECATUR 1.92E-02 (5/ 13) 1.30E-02 (21 / 26) 5.OOE 5.01E-02 6.2 MILES S 5.80E 4.32E-02 5.60E 2.88E-02 TL-208 2.OOE-03 104 VALUES < LLD LM3 13 VALUES < LLD 26 VALUES < LLD 1.9 MILES NNE Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements, at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN CHARCOAL FILTER PCI/M3 - 0.037 BQ/M3 Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 516 BI-214 5.OOE-02 6.69E-02 (16/412) PM4 7.53E-02 (4/ 52) 6.67E-02 (1 / 104) 5.07E 8.79E-02 7.6 MILES NE/ENE 5.22E 8.79E-02 6.67E 6.67E-02 1-131 3.OOE-02 SEE NOTE 3 K-40 3.OOE-01 3.65E-01 (22 / 412) LM3 4.13E-01 (2/ 52) 3.62E-01 (6 / 104) 3.OOE 4.75E-01 1.9 MILES NNE 3.84E 4.42E-01 3.17E 4.45E-01 PB-212 3.OOE-02 412 VALUES < LLD LM3 52 VALUES < LLD 104 VALUES < LLD 1.9 MILES NNE PB-214 7.OOE-02 8.75E-02 (9 /412) PM2 SPRING CITY 1.08E-01 (1 / 52) 104 VALUES < LLD 7.06E 1.08E-01 7.0 MILES NW 1.08E 1.08E-01 TL-208 2.OOE-02 412 VALUES < LLD PM5 DECATUR 52 VALUES < LLD 104 VALUES < LLD 6.2 MILES S Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Note: 3. The analysis of Charcoal Filters was performed by Gamma Spectroscopy. No 1-131 was detected. The LLD for 1-131 by Gamma Spectroscopy was 0.03 pCi/cubic meter.

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN ATMOSPHERIC MOISTURE PCI/M3 - 0.037 BQ/M3 Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements TRITIUM 206 3.OOE+00 4.15E+00 (8/154) LM3 4.74E+00 (2 / 26) 3.66E+00 (1/ 52) 3.01E+00 - 5.60E+00 1.9 MILES NNE 3.89E+00- 5.60E+00 3.66E+00 - 3.66E+00 CD Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN MILK PCI/L - 0.037 BQ/L Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range, Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements IODINE-131 126 4.00E-01 74 VALUES < LLD 52 VALUES < LLD GAMMA SCAN (GELI) 126 AC-228 2.00E+01 74 VALUES < LLD LAYMAN FARM 26 VALUES < LLD 52 VALUES < LLD 1.3 MILES SSW BI-214 2.00E+01 3.23E+01 (10/74) LAYMAN FARM 3.41E+01 (3/26) 2.53E+01 (2 / 52) 2.01E+01 - 5.39E+01 1.3 MILES SSW 2.01E+01 - 5.39E+01 2.41E+01 - 2.65E+01 K-40 1.00E+02 1.35E+03 (74 / 74) LAYMAN FARM 1.37E+03 (26 / 26) 1.27E+03 (52 / 52) 1.10E+03 - 1.54E+03 1.3 MILES SSW 1.15E+03 - 1.54E+03 9.16E+02 - 1.53E+03 PB-212 1.50E+01 74 VALUES < LLD LAYMAN FARM 26 VALUES < LLD 52 VALUES < LLD 1.3 MILES SSW 6'1 PB-214 2.00E+01 2.57E+01 (5/74) LAYMAN FARM 3.66E+01 (1 / 26) 52 VALUES < LLD 2.04E+01 - 3.66E+01 1.3 MILES SSW 3.66E+01- 3.66E+01 TL-208 1.00E+01 74 VALUES < LLD LAYMAN FARM 26 VALUES < LLD 52 VALUES < LLD 1.3 MILES SSW SR 89 19 3.50E+00 11 VALUES < LLD 8 VALUES < LLD SR 90 19 2.00E+00 11 VALUES < LLD 8 VALUES < LLD Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN SOIL PCI/GM - 0.037 BQ/G (DRY WEIGHT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 11 AC-228 2.50E-01 1.14E+00 (8/8) LM-4 WB 1.44E+00 (1 / 1) 6.86E-01 (3 / 3) 8.67E 1.44E+00 0.9 MILES SE 1.44E+00- 1.44E+00 5.57E 7.89E-01 BE-7 2.50E-01 8 VALUES < LLD PM5 DECATUR 1 VALUES < LLD 3 VALUES < LLD 6.2 MILES S BI-212 4.50E-01 1.20E+00 (8 / 8) PM5 DECATUR 1.56E+00 (1 /1) 6.89E-01 (3 / 3) 8.82E 1.56E+00 6.2 MILES S 1.56E+00 - 1.56E+00 5.54E 9.16E-01 BI-214 1.50E-01 9.08E-01 (8 / 8) LM3 1.12E+00 (1 /1) 7.43E-01 (3 / 3) 6.06E 1.12E+00 1.9 MILES NNE 1.12E+00- 1.12E+00 5.50E 9.48E-01 CS-137 3.OOE-02 3.18E-01 (8 /8) LM3 1.26E+00 (1/1) 2.86E-01 (3 / 3) 5.07E 1.26E+00 1.9 MILES NNE 1.26E+00 - 1.26E+00 1.28E 5.92E-01 CD K-40 7.50E-01 1.26E+01 (8/8) LM-4 WB 2.80E+01 (1 / 1) 4.26E+00 (3 / 3) 4.18E+00 - 2.80E+01 0.9 MILES SE 2.80E+01- 2.80E+01 2.78E+00 - 5.57E+00 PB-212 1.O0E-01 1.11E+00 (8/8) PM5 DECATUR 1.47E+00 (1/1) 5.97E-01 (3 /3) 8.27E 1.47E+00 6.2 MILES S 1.47E+00 - 1.47E+00 3.76E 8.12E-01 PB-214 1.50E-01 9.82E-01 (8 / 8) LM3 1.22E+00 (1 /1) 8.OOE-01 (3 / 3) 6.57E 1.22E+00 1.9 MILES NNE 1.22E+00- 1.22E+00 5.73E 9.86E-01 RA-224 7.50E-01 1.42E+-00 (3 / 8) PM5 DECATUR 1.61E+00 (1 /1) 8.37E-01 (2 / 3) 1.09E+00- 1.61E+00 6.2 MILES S 1.61E+00 - 1.61E+00 7.58E 9.16E-01 RA-226 1.50E-01 9.08E-01 (8 /8) LM3 1.12E+00 (1 1) 7.43E-01 (3/ 3) 6.06E 1.12E+00 1.9 MILES NNE 1.12E+00- 1.12E+00 5.50E 9.48E-01 TL-208 6.OOE-02 3.58E-01 (8/ 8) LM-4 WB 4.87E-01 (1 /1) 2.31E-01 (3/3) 2.63E 4.87E-01 0.9 MILES SE 4.87E 4.87E-01 1.81E 2.97E-01 SR 89 10 1.60E+00 8 VALUES < LLD 2 VALUES < LLD SR 90 10 4.OOE-01 8 VALUES < LLD 2 VALUES < LLD Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN APPLES PCI/KG - 0.037 BQ/KG (WET WT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 2 BI-214 4.OOE+01 1 VALUES < LLD 4.5 MILES N 1 VALUES < LLD 1 VALUES < LLD K-40 2.50E+02 1.04E+03 (1 /1) 4.5 MILES N 1.04E+03 (1 /1) 1.02E+03 (1/1) 1.04E+03- 1.04E+03 1.04E+03 - 1.04E+03 1.02E+03 - 1.02E+03 PB-214 8.00E+01 1 VALUES < LLD 4.5 MILES N 1 VALUES < LLD 1 VALUES < LLD 80 Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN CABBAGE PCI/KG - 0.037 BQ/KG (WET WT)

Name of Facility: WATT:S BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 2 BI-214 4.OOE+01 1 VALUES < LLD 2.5 MILES NE 1 VALUES < LLD 4.99E+01 (1/ 1) 4.99E+01 - 4.99E+01 K-40 2.50E+02 1.97E+03 (1 /1) 2.5 MILES NE 1.97E+03 (1/1) 1.67E+03 (1 /1) 1.97E+03- 1.97E+03 1.97E+03 - 1.97E+03 1.67E+03 - 1.67E+03 PB-214 8.OOE+01 1 VALUES < LLD 2.5 MILES NE 1 VALUES < LLD 1 VALUES < LLD CD Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN CORN PCI/KG - 0.037 BQ/KG (WET WT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 2 BI-214 4.OOE+01 1 VALUES < LLD NORTON FARM 1 VALUES < LLD 1 VALUES < LLD 4.1 MILES ESE K-40 2.50E+02 2.19E+03 (1/ 1) NORTON FARM 2.19E+03 (1/1) 2.13E+03 (1 /1) 2.19E+03 - 2.19E+03 4.1 MILES ESE 2.19E+03 - 2.19E+03 2.13E+03 - 2.13E+03 PB-214 8.00E+01 1 VALUES < LLD NORTON FARM 1 VALUES < LLD 1 VALUES < LLD 4.1 MILES ESE IL CD Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN GREEN BEANS PCI/KG - 0.037 BQ/KG (WET WT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 2 BI-214 4.OOE+01 1 VALUES < LLD 2.5 MILES NE 1 VALUES < LLD 1 VALUES < LLD K-40 2.50E+02 1.82E+03 (1 /1) 2.5 MILES NE 1.82E+03 (1 /1) 2.80E+03 (1 /1) 1.82E+03- 1.82E+03 1.82E+03 - 1.82E+03 2.80E+03 - 2.80E+03 PB-214 8.00E+01 1 VALUES < LLD 2.5 MILES NE 1 VALUES < LLD 1 VALUES < LLD CD Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN TOMATOES PCI/KG - 0.037 BQ/KG (WET WT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note I See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 2 BI-214 4.O0E+01 1 VALUES < LLD 2.5 MILES NE 1 VALUES < LLD 1 VALUES < LLD K-40 2.50E+02 2.77E+03 (1 1) 2.5 MILES NE 2.77E+03 (1 1) 1.79E+03 (1 /1) 2.77E+03 - 2.77E+03 2.77E+03- 2.77E+03 1.79E+03 - 1.79E+03 PB-214 8.00E+01 1 VALUES < LLD 2.5 MILES NE 1 VALUES < LLD I VALUES < LLD

-1 ,D Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN SURFACE WATER(Total)

PCI/L - 0.037 BQ/L Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GROSS BETA 39 1.90E+00 2.81E+00 (25/26) TRM 517.9 2.84E+00 (13/13) 2.69E+00 (12/13) 2.09E+00 - 3.99E+00 2.09E+00 - 3.99E+00 1.99E+00 - 3.25E+00 GAMMA SCAN (GELI) 39 AC-228 2.OOE+01 26 VALUES < LLD TRM 517.9 13 VALUES < LLD 13 VALUES < LLD BI-214 2.OOE+01 3.19E'01 (3 /26) TRM 517.9 4.30E+01 (1 / 13) 5.51E+01 (1 / 13) 2.53E+01 - 4.30E+01 4.30E+01- 4.30E+01 5.51E+01 - 5.51E+01 K-40 1.OOE+02 26 VALUES < LLD TRM 517.9 13 VALUES < LLD 13 VALUES < LLD PB-212 1.50E+01 26 VALUES < LLD TRM 517.9 13 VALUES < LLD 13 VALUES < LLD PB-214 2.OOE+01 2.81E+01 (2/26) TRM 517.9 2.96E+01 (1 / 13) 3,62E+01 (1 / 13) 2.67E+01 - 2.96E+01 2.96E+01- 2.96E+01 3.62E+01 - 3.62E+01 TL-208 1.OOE+01 26 VALUES < LLD TRM 517.9 13 VALUES < LLD 13 VALUES < LLD TRITIUM 39 3.OOE+02 5.88E+02 (1 /26) TRM 517.9 5.88E+02 (1 /13) 13 VALUES < LLD 5.88E+02- 5.88E+02 5.88E+02- 5.88E+02 Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN PUBLIC WATER(Total)

PCI/L - 0.037 BQ/L Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GROSS BETA 39 1.90E+00 2.50E+00 (24 / 26) RM-2 DAYTON TN 2.62E+00 (13/13) 2.69E+00 (12/13) 1.92E+00 - 3.53E+00 17.8 MILES NNE 1.93E+00 - 3.53E+00 1.99E+00 - 3.25E+00 GAMMA SCAN (GELI) 39 AC-228 2.00E+01 26 VALUES < LLD RM-2 DAYTON TN 13 VALUES < LLD 13 VALUES < LLD 17.8 MILES NNE BI-214 2.00E+01 2.97E+01 (5 /26) CF INDUSTRIES 3.76E+01 (2/13) 5.51E+01 (1 / 13) 2.14E+01 - 4.29E+01 TRM 473.0 3.22E+01 - 4.29E+01 5.51E+01 - 5.51E+01 K-40 1.00E+02 26 VALUES < LLD RM-2 DAYTON TN 13 VALUES < LLD 13 VALUES < LLD 17.8 MILES NNE PB-212 1.50E+01 26 VALUES < LLD RM-2 DAYTON TN 13 VALUES < LLD 13 VALUES < LLD CD 17.8 MILES NNE PB-214 2.OOE+01 2.08E+01 (2 / 26) CF INDUSTRIES 2.08E+01 (2/13) 3.62E+01 (1 / 13) 2.06E+01 - 2.11E+01 TRM 473.0 2.06E+01 - 2.11E+01 3.62E+01 - 3.62E+01 TL-208 1.OOE+01 26 VALUES < LLD RM-2 DAYTON TN 13 VALUES < LLD 13 VALUES < LLD 17.8 MILES NNE TRITIUM 47 3.OOE+02 4.70E+02 (6 I 34) RM-2 DAYTON TN 6.06E+02 (2 /17) 13 VALUES < LLD 3.30E+02 - 8.17E+02 17.8 MILES NNE 3.94E+02- 8.17E+02 Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN WELL WATER(Total)

PCI/L - 0.037 BQ/L Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Reporting Period: 2006 Location of Facility: RHEA TENNESSEE Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Type and Mean (F) Nonroutine of Detection Mean (F) Name Mean (F)

Total Number Range Reported (LLD) Range Distance and Direction Range of Analysis See Note 2 Measurements Performed See Note I See Note 2 See Note 2 GROSS BETA 86 1.90E+00 3.61E+00 (47/60) WBN MW-C 4.57E+00 (11/13) 2.50E+00 (13/26) 2.02E+00 - 1.21E+01 0.25 MILES ESE) 2.13E+00 - 1.21E+01 1.93E+00 - 3.53E+00 GAMMA SCAN (GELI) 86 2.43E+01 (1 / 60) WBN MW-B 2.43E+01 (1 / 12) 26 VALUES < LLD AC-228 2.OOE+01 2.43E+01 - 2.43E+01 0.45 MILES SSE) 2.43E+01 - 2.43E+01 3.15E+01 (10/60) WBN MW-B 4.13E+01 (3/12) 1.97E+02 (13 / 26)

BI-214 2.OOE+01 2.09E+01 - 4.47E+01 0.45 MILES SSE) 3.85E+01 - 4.47E+01 3.67E+01 - 2.49E+02 WBN MW-B 3.37E+02 (1 / 12) 26 VALUES < LLD K-40 1.00E+02 3.37E+02 (1 /60) 3.37E+02 - 3.37E+02 0.45 MILES SSE) 3.37E+02 - 3.37E+02 60 VALUES < LLD WBN MW-A 13 VALUES < LLD 26 VALUES < LLD PB-212 1.50E+01 0.58 MILES SSE) 2.OOE+01 3.12E+01 (6 /60) WBN MW-B 3.45E+01 (3 / 12) 1.91E+02 (13/26)

PB-214 0.45 MILES SSE) 3.72E+01 - 2.44E+02 (J) 2.03E+01 - 4.06E+01 3.15E+01- 4.06E+01 60 VALUES < LLD WBN MW-A 13 VALUES < LLD 26 VALUES < LLD TL-208 1.OOE+01 0.58 MILES SSE)

TRITIUM 86 WBN MW-B 1.00E+04 (12 / 12) 26 VALUES < LLD 3.OOE+02 6.57E+03 (35 / 60) 1.77E+03 - 1.26E+04 0.45 MILES SSE) 8.87E+03 - 1.26E+04 Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN COMMERCIAL FISH PCI/GM - 0.037 BQ/G (DRY WEIGHT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 6 BI-214 1.00E-01 1.42E-01 (1 / 4) CHICKAMAUGA RES 1.42E-01 (1 / 2) 2.46E-01 (1 / 2) 1.42E 1.42E-01 TRM 471-530 1.42E 1.42E-01 2.46E 2.46E-01 CS-137 3.OOE-02 3.38E-02 (2 /4) DOWNSTREAM STATION 1 3.38E-02 (1 / 2) 8.06E-02 (2 / 2) 3.38E 3.38E-02 DOWNSTREAM 3.38E 3.38E-02 5.35E 1.08E-01 K-40 4.00E-01 1.12E+01 (4/4) CHICKAMAUGA RES 1.17E+01 (2/2) 1.30E+01 (2/2) 1.02E+01 - 1.31E+01 TRM 471-530 1.02E+01 - 1.31E+01 1.16E+01 - 1.44E+01 PB-212 4.OOE-02 4 VALUES < LLD DOWNSTREAM STATION 1 2 VALUES < LLD 2 VALUES < LLD DOWNSTREAM PB-214 5.OOE-01 4 VALUES < LLD DOWNSTREAM STATION 1 2 VALUES < LLD 2 VALUES < LLD DOWNSTREAM CD

ý0 lio TL-208 3.OOE-02 4 VALUES < LLD DOWNSTREAM STATION 1 2 VALUES < LLD 2 VALUES < LLD DOWNSTREAM Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN GAME FISH PCI/GM - 0.037 BQ/G (DRY WEIGHT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI) 6 BI-214 1.00E-01 2.37E-01 (1 /4) DOWNSTREAM STATION 1 2.37E-01 (1 / 2) 2 VALUES < LLD 2.37E 2.37E-01 DOWNSTREAM 2.37E 2.37E-01 CS-137 3.00E-02 4.72E-02 (3 / 4) DOWNSTREAM STATION 1 4.74E-02 (2 / 2) 7.98E-02 (2 / 2) 4.69E 4.75E-02 DOWNSTREAM 4.73E 4.75E-02 5.89E 1.01E-01 K-40 4.OOE-01 1.45E+01 (4 /4) CHICKAMAUGA RES 1.50E+01 (2 /2) 1.34E+01 (2 12) 1.29E+01 - 1.71E+01 TRM 471-530 1.29E+01 - 1.71E+01 1.30E+01 - 1.38E+01 PB-214 5.00E-01 4 VALUES < LLD DOWNSTREAM STATION 1 2 VALUES < LLD 2 VALUES < LLD DOWNSTREAM CD Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN SHORELINE SEDIMENT PCI/GM - 0.037 BQ/G (DRY WEIGHT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine of Analysis (LLD) Range Distance and Direction Range Range Reported Performed See Note 1 See Note 2 See Note 2 See Note 2 Measurements GAMMA SCAN (GELI)

AC-228 2.50E-01 1.39E+00 (2/ 2) COTTON PORT MARINA 1.39E+00 (2 / 2) 2 VALUES < LLD 1.33E+00- 1.44E+00 TRM 513 1.33E+00 - 1.44E+00 BE-7 2.50E-01 2.65E-01 (1 /2) COTTON PORT MARINA 2.65E-01 (1 / 2) 6.05E-01 (1 /2) 2.65E 2.65E-01 TRM 513 2.65E 2.65E-01 6.05E 6.05E-01 BI-212 4.50E-01 1.60E+00 (2 /2) COTTON PORT MARINA 1.60E+00 (2 / 2) 2 VALUES < LLD 1.59E+00- 1.62E+00 TRM 513 1.59E+00 - 1.62E+00 BI-214 1.50E-01 5.91E-01 (2/2) COTTON PORT MARINA 5.91E-01 (2/2) 2 VALUES < LLD 5.18E 6.63E-01 TRM 513 5.18E 6.63E-01 CS-137 3.00E-02 3.44E-02 (1 / 2) COTTON PORT MARINA 3.44E-02 (1 / 2) 2 VALUES < LLD 3.44E 3.44E-02 TRM 513 3.44E 3.44E-02 CD K-40 7.50E-01 3.16E+01 (2/2) COTTON PORT MARINA 3.16E+01 (2 /2) 2 VALUES < LLD 3.05E+01 - 3.26E+01 TRM 513 3.05E+01- 3.26E+01 00 PB-212 1.00E-01 1.33E+00 (2 / 2) COTTON PORT MARINA 1.33E+00 (2 / 2) 2 VALUES < LLD 1.31E+00- 1.35E+00 TRM 513 1.31E+00 - 1.35E+00 PB-214 1.50E-01 6.33E-01 (2 / 2) COTTON PORT MARINA 6.33E-01 (2 /2) 2 VALUES < LLD 5.68E 6.98E-01 TRM 513 5.68E 6.98E-01 RA-224 7.50E-01 1.28E+00 (2 / 2) COTTON PORT MARINA 1.28E+00 (2 / 2) 2 VALUES < LLD 1.20E+00- 1.36E+00 TRM 513 1.20E+00 - 1.36E+00 RA-226 1.50E-01 5.91E-01 (2 / 2) COTTON PORT MARINA 5.91E-01 (2/2) 2 VALUES < LLD 5.18E 6.63E-01 TRM 513 5.18E 6.63E-01 TL-208 6.00E-02 4.56E-01 (2 / 2) COTTON PORT MARINA 4.56E-01 (2 / 2) 2 VALUES < LLD 4.37E 4.75E-01 TRM 513 4.37E 4.75E-01 Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Tennessee Valley Authority Environmental Radiological Monitoring and Instrumentation Western Area Radiological Laboratory RADIOACTIVITY IN POND SEDIMENT PCI/GM - 0.037 BQ/G (DRY WEIGHT)

Name of Facility: WATTS BAR NUCLEAR PLANT Docket Number: 50-390,391 Location of Facility: RHEA TENNESSEE Reporting Period: 2006 Type and Lower Limit Indicator Locations Location with Highest Annual Mean Control Locations Number of Total Number of Detection Mean (F) Name Mean (F) Mean (F) Nonroutine (LLD) Range Distance and Direction Range Range Reported of Analysis See Note 1 See Note 2 See Note 2 See Note 2 Measurements Performed GAMMA SCAN (GELI)

AC-228 2.50E-01 8.69E-01 (5/ 5) YP-13 1.18E+00 (1 / 1) VALUES < LLD 6.31E 1.18E+00 YARD POND 1.18E+00 - 1.18E+00 BE-7 2.50E-01 4.40E-01 (4 / 5) YP-13 5.67E-01 (1 / 1) VALUES < LLD 3.23E 5.67E-01 YARD POND 5.67E 5.67E-01 BI-212 4.50E-01 9.10E-01 (5/5) YP-13 1.20E+00 (1 / 1) VALUES < LLD 6.74E 1.20E+00 YARD POND 1.20E+00 - 1.20E+00 BI-214 1.50E-01 6.82E-01 (5 / 5) YP-13 8.35E-01 (1 / 1) VALUES < LLD 5.52E 8.35E-01 YARD POND 8.35E 8.35E-01 CO-58 3.OOE-02 4.10E-01 (2 / 5) YP-17 4.50E-01 (1 / 1) VALUES < LLD 3.71E 4.50E-01 YARD POND 4.50E 4.50E-01 80 0D CO-60 3.00E-02 8.95E-02 (3 / 5) YP-17 1.34E-01 (1 /1) VALUES < LLD 5.32E 1.34E-01 YARD POND 1.34E 1.34E-01 CS-134 3.00E-02 7.06E-02 (4 / 5) YP-5 8.34E-02 (1 / 1) VALUES < LLD 6.40E 8.34E-02 YARD POND 8.34E 8.34E-02 CS-137 3.OOE-02 1.21E-01 (5 / 5) YP-13 2.08E-01 (1 /1) VALUES < LLD 9.04E 2.08E-01 YARD POND 2.08E 2.08E-01 K-40 7.50E-01 1.13E+01 (5/5) YP-13 1.62E+01 (1 / 1) VALUES < LLD 8.40E+00- 1.62E+01 YARD POND 1.62E+01 - 1.62E+01 PB-212 1.O0E-01 8.90E-01 (5 / 5) YP-13 1.21E+00 (1/1) VALUES < LLD 6.16E 1.21E+00 YARD POND 1.21E+00 - 1.21E+00 PB-214 1.50E-01 7.39E-01 (5 / 5) YP-13 9.90E-01 (1 /1) VALUES < LLD 1 5.80E 9.90E-01 YARD POND 9.90E 9.90E-01 RA-224 7.50E-01 8.68E-01 (2 / 5) YP-17 9.49E-01 (1 / 1) VALUES < LLD 7.86E 9.49E-01 YARD POND 9.49E 9.49E-01 SB-125 -1.00E+00 3.85E-01 (2/ 5). YP-17 5.64E-01 (1 / 1) VALUES < LLD 2.07E 5.64E-01 YARD POND 5.64E 5.64E-01 TL-208 6.OOE-02 2.95E-01 (5 / 5) YP-13 4.26E-01 (1 / 1) VALUES < LLD 2.23E 4.26E-01 YARD POND 4.26E 4.26E-01 Note: 1. Nominal Lower Level of Detection (LLD) as described in Table E - 1 Note: 2. Mean and Range based upon detectable measurements only. Fraction of detectable measurements at specified location is indicated in parentheses (F).

Figure H-1 Direct Radiation Direct Radiation Levels Watts Bar Nuclear Plant oeratoni Four Quarter Moving Average 25 Iitial WBNP January, 1 99E m 20 C',

15 E

A, On-Site,

-o-Off-S ite, 10 .... .. . . . . . . . .. . . . . .. . .

1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year Thermoluminescent dosimeters are processed quarterly. This chart shows trends in the average measurement for all dosimeters grouped as "on-site" or "off-site". The data from preoperational phase, prior to 1996, show the same trend of "on-site" measurements higher than "off-site" measurements that is observed in current data indicating that the slightly higher "on-site" direct radiation levels are not related to plant operations.

Figure H-2 Radioactivity in Air Filters Annual Average Gross Beta Activity in Air Filters Watts Bar Nuclear Plant 0.15

- Indicator S-a-Ea Control E

• 0.10 Initial Operation of WBNP in January, 1996 0.05 0.00 1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year To more clearly show trends developed since the end of atmospheric weapons testing, the data beginning with the resumption of the monitoring program in 1990 is shown in greater detail.

Annual Average Gross Beta Activity in Air Filters Watts Bar Nuclear Plant 0.025 0.020*Q . ..........................

2-A Indicator E Control

< I ~Initial WBNP

• 0.015 . ....... reop Avg I op rti on ininr operation' Janjary,

> 1996 0.010 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 Calendar Year Figure H-3 Cs-137 in Soil Cesium-137 was produced by past nuclear weapons testing and is present in almost every environmental sample exposed to the atmosphere. The "control" and "indicator" locations have generally trended downward with year-to-year variation, since the beginning of the monitoring program from the Watts Bar site.

Annual Average Activity of Cs-137 in Soil Watts Bar Nuclear Plant 1 .0 ......................... ..... .......

0,9 -*- bIdicator 0.8 -*--control Initial WBNP Operation in L __ , January, 1996 Z, 0.7 E_0.6 70.5

> 0.3 0.2 0.1 0.0 1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year In almost every year, the "indicator" locations have shown greater activity of Cs- 137 than the "control" locations. This trend, with its preoperational average is shown below.

Ratio - Indicator:Control for Cs-137 in Soil Watts Bar Nuclear Plant 3.5 3 3.0 Initial WBNP Operation in t 2.5 January, 1996 1.5 1.0 0 0.5-0.0 .

1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year Figure H-4 Gross Beta Activity in Surface and Drinking Water Annual Average Gross Beta Activity in Surface Water Watts Bar Nuclear Plant 5 - -- - -------- _ _ __

'-4

00. 3

<2

---

Indicator Initial WBNP Operation

<: 1 -otControlI

-E3- in January, 1996 0

1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year Annual Average Gross Beta Activity in Drinking Water Watts Bar Nuclear Plant 6,

5)

Initial WBNP Operation in January, 1996 5

A Indicator S2 3 Control 1I 0 8 8 9 1 2000 2005201 1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year Figure H-5 Radioactivity in Fish Annual Average Activity of Cs-137 in Commerical Fish Watts Bar Nuclear Plant 0.30 0.25 Initial WBNP C.

.>, 0.20 - Dow nstream Operation in

• ~ 0.5 --- Upstream January, 1996 0.00, , .'

1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year Annual Average Activity of Cs-137 in Game Fish Watts Bar Nuclear Plant 0 .3 0 . ...................

0.205

_ 0.25 - .-Dow nstrearm kiitial WBNP

. 0.20 E--- Upstream operation in 5 E January, 1996 1 0.15 25 0.10 0.05

< 0.00 1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year Figure H-6 Radioactivity in Shoreline Sediment The Cs-137 present in the shoreline sediments of the Tennessee River system was produced both by testing of nuclear weapons and by related nuclear operations in the upper reaches of the Tennessee River watershed. The amounts of Cs-137 have declined significantly during the course of monitoring for the Watts Bar site, so much so that not all samples contain detectable levels.

Annual Average Activity of Cs-137 in Shoreline Sediment Watts Bar Nuclear Plant 0.6 0.4 - Dw nstream Do Initial WBNP 0.5 - -- ptra / operation in

• 0.3 - Usea January, 1996

< 0.2 S0,11 0.1 0

1975 1980 1985 1990 1995 2000 2005 2010 Calendar Year