ML15215A406

Corrected LaSalle Groundwater Tritium Concentrations

ML15215A406
Person / Time
Site:	LaSalle
Issue date:	07/28/2015
From:	Exelon Generation Co
To:	Office of Nuclear Reactor Regulation
References
Download: ML15215A406 (5)

Text

2015 Unit 1 Cycled Condensate Storage Tank Tritium Remediation Monitoring TW-LS-116s Sample Results Water Level Well Bottom Level Water Column Date/Time Activity (pCilL) (if) (ft) (ft) 1/13/15 8:55 9.21 E+03 10.30 17.80 7.50 1/26/15 13:35 8.06E+03 9.30 17.80 8.50 2/3/15 13:20 8.24E+03 2/7/15 11:33 9.44E+03 9.50 17.90 8.40 2/21/15 10:55 9.24E+03 9.00 17.90 8.90 3/6/15 10:20 7.89E+03 9.00 17.90 8.90 3/26/15 10:31 8.66E+03 8.70 17.90 9.20 3(31/15 8:15 1.24E+04 8.70 17.90 9.20 4/14/15 11:00 7.70E+03 9.30 17.90 8.60 5/12/15 7:55 1.07E+04 9.00 18.00 9.00 5/29/15 10:55 1.19E+04 8.40 17.80 9.40 6/9/15 8:56 1.14E+04 8.80 17.90 9.10 Corrected 7/28/2015 1 off331 16

2015 Unit 1 Cycled Condensate Storage Tank Tritium Remediation Monitoring TW-LS-119s Sample Results Water Level Well Bottom Level Water Column Date/Time Activitv IDCilL) (ft ifti rn 1/1 3/15 8:15 < 8.17E+02 6.0 13.8 7.8 1/26/15 13:20 < 9.17E+02 5.8 14.1 8.3 2/3/15 13:10 < 8.18E+02_____________

2/7/15 10:48 < 1.30E+03 5.4 14.1 8.7 2/21/15 10:20 < 1.30E+03 5.5 14.1 8.6 3/6/15 13:30 < 9.16E+02 6.0 14.3 8.3 3/31/15 10:20 < 8.23E+02 5.1 14.0 8.9 4/14/15 12:53 < 9.20E+02 5.1 14.1 9.0 4/28/15 9:10 < 8.95E+02 5.0 14.1 9.1 5/12/15 8:15 < 8.76E+02 4.6 14.0 9.4 5/29/15 10:45 < 8.75E+02 4.4 14.0 9.6 6/9/15 9:17 < 8.82E+02 4.8 14.0 9.2 Corrected 7/28/2015 1 off331 18

2015 Unit 1 Cycled Condensate Storage Tank Tritium Remediation Monitoring TW-LS-120s Sample Results Water Level Well Bottom Level Water Column Date/Time Activity (oCilL) (ft) (ift) (ft) 1/13/157:45 < 8.17E+02 6.3 11,3 5,0 1/26/15 13:20 < 9,17E+02 6.1 11.3 5.2 2/3/15 13:10 < 8,18E+02 ____ ____

2/7/15 10:48 < 1,30E+03 5.8 11.3 5.5 2/21/15 10:25 < 1,30E+03 5.9 11.3 5.4 3/6/15 10:25 < 9,64E+02 6.6 11.6 5.0 3/26/15 11:03 < 9.17E+02 6.1 11.3 5.2 3/31/15 10:35 < 8.23E+02 6.1 11.4 5.3 4/14/15 12:59 < 9.20E+02 5.9 11.3 5.4 4/28/15 9:15 < 8.95E+02 5.9 11.4 5.5 5/12/15 8:25 < 8.76E+02 5.5 11.5 6.0 5/29/15 11:15 < 8.75E+02 5.4 11.4 6.0 6/9/15 9:22 < 8.82E+02 5.0 11.3 6.3 Corrected 7/28/2015 1 f3 190f31

2015 Unit 1 Cycled Condensate Storage Tank Tritium Remediation Monitoring TW-LS-121s Sample Results Water Level Well Bottom Level Water Column Date/Time Activity (DCilL) ift) (ftl 1/13/15 8:35 < 8.17E+02 8.3. 11.6 3.3 1/27/15 7:35 < 9.17E+02 8.3 11.7 3.4 2/3/15 13:45 < 8.18E+02 2/7/15 11:06 < 1.30E+03 8.0 12.0 4.0 2/21/15 10:36 < 1.30E+03 8.1 11.8 3.7 3/6/15 9:00 < 9.64E+02 8.5 11.9 3.4 3/26/15 10:21 < 9.17E+02 8.0 11.8 3.8 3/31/15 8:05 < 8.23E+02 8.2 12.0 3.8 4/14/15 11:15 < 9.20E+02 7.8 11.8 4.0 4/28/15 8:25 < 8.95E+02 7.9 11.9 4.0 5/12/15 8:05 < 8.76E+02 7.4 11.8 4.4 5/29/15 10:45 < 8.75E+02 7.5 11.8 4.3 6/9/15 8:45 < 8.82E+02 7.2 11.8 4.6 Corrected 7/28/2015 2 off331 20

2015 Unit 1 Cycled Condensate Storage Tank Tritium Remediation Monitoring Storm Drain Oil Sep Pit Compositor Sample Results Date/Time pCi/L 1/13/15 8:30 8.17E+02 1/26/15 11:28 9.17E+02 2/7/15 11:19 1.30E+03 2/21/15 11:50 1.30E+03 3/6/15 9:00 9.64E+02 3/11/15 7:50 9.94E+02 3/26/15 10:16 9.17E+02 3/31/15 7:55 8.23E+02 4/28/15 8:10 8.95E+02 5/12/15 7:25 8.76E+02 5/29/15 10:35 8.75E+02 6/9/15 8:30 8.82E+02 Corrected 7/28/2015Iof3 1 of 31