ML071410243

Transmittal of 2006 Annual Radiological Environmental Operating Report

ML071410243
Person / Time
Site:	LaSalle
Issue date:	05/15/2007
From:	Landahl S R Exelon Nuclear
To:	Document Control Desk, NRC/NRR/ADRO
References
FOIA/PA-2010-0209, RA07-041
Download: ML071410243 (11)

Text

Exelom.LaSalle Generating Station www.exeloncorp.com Nuclear 2601 North 21st Road Marseilles, I L 61341-9757 RA07-041 10 CFR 50 Appendix I May 15, 2007 U. S. Nuclear Regulatory Commission Attention:

Document Control Desk Washington, D.C. 20555 LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-1 1 and NPF-1 8 NRC Docket Nos. 50-373 and 50-374

Subject:

2006 Annual Radiological Environmental Operating Report Enclosed is the Exelon Generation Company, LLC, LaSalle County Station 2005 Annual Radiological Environmental Operating Report, submitted in accordance with Technical Specification 5.6.2, "Annual Radiological Environmental Operating Report." This report contains the results of the Radiological Environmental and Meteorological Monitoring Programs.

This report is enclosed as an Attachment.

In addition, this Attachment contains the results of groundwater monitoring conducted in accordance with Exelon's Radiological Groundwater Protection Program, which is a voluntary program implemented in 2006. This information is being reported in accordance with a nuclear industry initiative.

Should you have any questions concerning this letter, please contact Mr. Terrence Simpkin, Regulatory Assurance Manager, at (815) 415-2800.Respectfully, Susan R. Landahl Site Vice President LaSalle County Station Attachment cc: Regional Administrator

-NRC Region III NRC Senior Resident Inspector

-LaSalle County Station

APPENDIX B DATA TABLES 226 of 234 TABLE B4.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LASALLE COUNTY STATION, 2006 RESULTS IN UNITS OF PCI/LITER 12 SIGMA SITE HP-10 HP-10 HP-2 HP-2 HP-5 HP-5 HP-7 HP-7 MS-LS-1OIS MS-LS-103S MS-LS-104S MS-LS-105S MS-LS-106S MS-LS-107S MS-LS-108S MS-LS-109S MS-LS-110S MS-LS-IllS MS-LS-11IS DUP MS-LS-I 12S MS-LS-112S DUP MW-LS-1O1S MW-LS-102S MW-LS-103S MW-LS-104S MW-LS-105S MW-LS-105S MW-LS-105S MW-LS-106S MW-LS-107S MW-LS-lO9S MW-LS-1 11S MW-LS-1 12S MW-LS-113S MW-LS-I 14S MW-LS-I 15S SW-LS-101 SW-LS-101 SW-LS-102 SW-LS-102 SW-LS-103 SW-LS-103 SW-LS-104 SW-LS-104 SW-LS-104 SW-LS-105 SW-LS-105 DUP SW-LS-105 SW-LS-106 SW-LS-106 COLLECTION DATE 05/24/06 10/04/06 05/24/06 10/03106 05/24/06 10/03/06 05/24/06 10/04106 05/24106 05/23/06 05/26/06 05/26/06 05125/06 05126106 05/25/06 05/26/06 05/25/06 ORIG 05/30/06 DUP 05/30/06 ORIG 05/30/06 DUP 05/30/06 10/05/06 10/05106 10/04/06 10/04/06 07/05/06 10/05/06 RERUN 10/05/06 10/05/06 10/04/06 10/04/06 10/05/06 10/06/06 10/06/06 10/05/06 10/05/06 05/23/06 10/05/06 05/23/06 10/05/06 05/23/06 10/05/06 05/25/06 10/05/06 RERUN 10105/06 ORIG 05/25/06 DUP 05/25/06 10/05/06 05/24/06 10/05/06<165 182<164< 186< 163* 185* 165<189 185 1 111< 160* 170 1280 + 184< 167* 171< 172<170 188 + 114< 169* 166< 168< 170< 167 *< 188 ** 185< 186 *766

• 153" 1720 +/- 240*1940 + 255*< 185< 181 *< 184<182 *< 187< 188< 184 *< 183 *232 + 116< 187 *177 + 111< 168 *< 167< 179 *< 165 721 +/- 147" 713 +/- 151" 173 +/- 116* 166< 176 *219 +/- 113< 178 ** INDICATES DISTILLED ANALYSIS B-1 227 of 234 TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LASALLE COUNTY STATION, 2006 RESULTS IN UNITS OF PCI/LITER

+/-2 SIGMA COLLECTION DATE SITE IS-LS-101S TS-LS-102S TS-LS-1 03S TS-LS-104S TS-LS-105S 05109106 05/05/06 05/05/06 05/05/06 05/09/06< 168 183 1 105< 166< 167< 167 B-2 228 of 234 TABLE B-I.2 HIGHEST TO LOWEST CONCENTRATIONS OF TRITIUM IN GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LASALLE COUNTY STATION, 2006 RESULTS IN UNITS OF PCI/LITER

+/-:2 SIGMA SITE MW-LS-105S MW-LS-105S MS-LS-105S MW-LS-105S SW-LS-104 SW-LS-104 SW-LS-101 SW-LS-106 HP-7 MS-LS-110S MW-LS-102S MW-LS-1 13S MW-LS-112S SW-LS-101 HP-2 MW-LS-104S MS-LS-10IS HP-5 MW-LS-103S MW-LS-106S MW-LS-109S MW-LS-114S TS-LS-102S MW-LS- 115S HP-1O MW-LS-ilIS MW-LS-107S SW-LS-103 SW-LS-106 SW-LS-102 SW-LS-105 SW-LS-105 MS-LS-108S MS-LS-107S MS-LS-104S MS-LS-109S MS-LS-I 12S DUP MS-LS-111S MS-LS-i 12S SW-LS-102 TS-LS-IOIS MS-LS-106S MW-LS-lOIS SW-LS-103 TS-LS-104S TS-LS-I05S MS-LS-1IS DUP SW-LS-105 DUP TS-LS-103S HP-10 COLLECTION DATE RERUN 10105106 10/05/06 05/26/06 07/05/06 10/05/06 RERUN 10105/06 05/23/06 05/24/06 10/04/06 05125/06 10/05/06 10/06106 10/06/06 10/05/06 10103/06 10/04/06 05/24/06 10/03/06 10/04/06 10/05/06 10/04/06 10/05/06 05/05/06 10/05/06 10/04/06 10/05/06 10/04/06 10/05/06 10/05/06 05/23/06 10105/06 ORIG 05/25/06 05/25106 05/26/06 05/26/06 05/26/06 DUP 05/30/06 ORIG 05/30/06 ORIG 05/30/06 10/05/06 05/09/06 05/25/06 10/05/06 05/23/06 05/05/06 05/09/06 DUP 05/30/06 DUP 05/25/06 05/05/06 05/24/06 1940

• 255*1720 t 240*1280 +/- 184 766 +/- 153*721 +/- 147'713 +/- 151*232 t 116 219 + 113< 189 *188 + 114* 188< 188 *< 187 *< 187< 186< 186 185 + 111< 185< 185 *< 185 *<184< 184 183 :1105< 183 *< 182< 182< 181< 179 *<178 *177 1 Ill< 176 *173 + 116< 172< 171< 170< 170< 170< 169< 168< 168< 168< 167< 167< 167< 167< 167< 166< 166< 166* 165* INDICATES DISTILLED ANALYSIS B-3 229 of 234 TABLE B4.2 HIGHEST TO LOWEST CONCENTRATIONS OF TRITIUM IN GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LASALLE COUNTY STATION, 2006 RESULTS IN UNITS OF PCI/LITER

• 2 SIGMA COLLECTION DATE SITE HP-i SW-LS-104 I-P-2 HP-5 MS-LS-103S 05/24/06 05125/06 05/24/06 05/24/06 05/23/06< 165< 165* 164< 163< 160 B-4 230 of 234 TABLE B-I.3 CONCENTRATIONS OF STRONTIUM IN GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LASALLE COUNTY STATION, 2006 RESULTS IN UNITS OF PCI/LITER

+/-:2 SIGMA SITE HP-2 MS-LS-107S MS-LS-111S SW-LS-104 COLLECTION DATE 05/24/06 05/26/06 ORIG 05/30/06 05/25/06 1.8 + 0.8 0.9

• 0.5 1.9 +/- 1.0 1.1

• 0.6 B-5 231 of 234 TABLE B-I.4 HIGHEST TO LOWEST CONCENTRATIONS OF STRONTIUM IN GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LASALLE COUNTY STATION, 2006 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA SITE MS-LS-I 1S HP-2 SW-LS-104 MS-LS-107S COLLECTION DATE ORIG 05/30/06 05124/06 05/25/06 05/26/06 1.9 t 1.0 1.8 +/- 0.8 1.1 +/-0.6 0.9 +/- 0.5 B-6 232 of 234 TABLE B-I.5 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LASALLE COUNTY STATION, 2006 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA SITE HP-10 MS-LS-101S MS-LS-106S MS-LS-107S MS-LS-108S MS-LS-111S MS-LS-111S DUP MS-LS-1 12S MS-LS-112S DUP MW-LS-105S MW-IS-109S MW-LS-1 13S MW-LS-11 SS SW-LS-105 SW-LS-105 TS-LS-101S TS-LS-102S TS-LS-103S TS-LS-104S TS-LS-1 05S COLLECTION DATE 10/04/06 05/24/06 05/25106 05/26/06 05/25/06 ORIG 05/30/06 DUP 05/30/06 ORIG 05/30/06 DUP 05130106 10/05/06 10/04/06 10/06/06 10/05/06 ORIG 05/25/06 10/05/06 05/09/06 05/05/06 05/05/06 05/05/06 05/09/06 Be-7 K-40 175 +/- 51 44 +/-41-72 +/- 38-92+/- 37-69+/-44-61 +/- 48-47 +/- 40-91 +/- 46-o50+/-43-174+/-79-978 +/- 129-83+/-1 59-64 +/-52-41 +/-32-187:+/-:48-41 +/- 33-434:+/-144 245 +/- 41 75 +/- 32 190:+/-137 B-7 233 of 234 TABLE B-I.6 HIGHEST TO LOWEST CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LASALLE COUNTY STATION, 2006 RESULTS IN UNITS OF PCI/LITER

• 2 SIGMA COLLECTION DATE SITE MW-LS-109S TS-LS-102S TS-LS-103S TS-LS-105S SW-LS-105 HP-10 MW-LS-105S MS-LS-107S MS-LS-1 12S MW-LS-l 13S TS-LS-104S MS-LS-106S MS-LS-108S MW-LS-i 15S MS-LS-IIIS MS-LS-I 12S DUP MS-LS-1I1S DUP MS-LS-101S TS-LS-1O1S SW-LS-105 10/04/06 05105106 05/05106 05109106 10/05/06 10/04/06 10/05/06 05126/06 ORIG 05/30/06 10/06106 05/05/06 05/25/06 05/25/06 10/05/06 ORIG 05/30/06 DUP 05/30/06 DUP 05/30/06 05/24/06 05/09/06 ORIG 05/25/06 K-40 978

• 129 434

• 44 245

• 41 190 +/- 37 187

• 48 175

• 51 174 +/- 79 92 +/- 37 91 +/- 46 83 +/- 59 75

• 32 72 +/- 38 69 +/- 44 64 +/- 52 61

• 48 50 +/- 43 47 +/- 40 44 +/- 41 41 +/- 33 41 +/- 32 B -8 234 of 234