UCB Air Sampling Results (6/17/2011, before Cs-137 revision)
UCB Air Sampling Results (6/17/2011, before Cs-137 revision)
Back to Current Air Sampling Results
This page will serve as an archive for the air sampling data before a major revision of the Cs-137 numbers on 6/17/2011. A small amount of contamination from Cs-137 was discovered after taking a long background data sample on 6/9-13, and this background was subtracted from all of the previous Cs-137 measurements. Therefore, the levels of Cs-137 decreased relative to these original numbers.
| Start | End | Air Volume | I131 | I132 | Cs134 | Cs137 | Te132 | Be7* | Data |
|---|---|---|---|---|---|---|---|---|---|
| Liters | Bq/L (years**) | Bq/L (years**) | Bq/L (years**) | Bq/L (years**) | Bq/L (years**) | Bq/L (years**) | |||
| 03/18/2011 19:40 | 03/19/2011 21:13 | 4.07E+06 |
1.7e-06 [MDA=2.3e-08] (4.3e+02) |
3.4e-07 [MDA=3.8e-08] (2.2e+05) |
1.4e-07 [MDA=2.3e-08] (5.1e+03) |
1.6e-07 [MDA=2.7e-08] (4.5e+03) |
2.6e-07 [MDA=1.9e-08] (1.3e+04) |
1.8e-06 [MDA=1.8e-07] (6.2e+04) |
data |
| 03/19/2011 21:13 | 03/20/2011 09:24 | 1.94E+06 |
3.3e-06 [MDA=5.5e-08] (2.3e+02) |
1.7e-06 [MDA=9.4e-08] (4.3e+04) |
6.1e-07 [MDA=6.1e-08] (1.2e+03) |
6.3e-07 [MDA=7.3e-08] (1.2e+03) |
1.5e-06 [MDA=4.4e-08] (2.2e+03) |
8.4e-07 [MDA=5.0e-07] (1.3e+05) |
data |
| 03/20/2011 08:30 | 03/20/2011 18:45 | 1.63E+06 |
8.3e-07 [MDA=4.3e-08] (8.9e+02) |
1.3e-07 [MDA=6.9e-08] (5.6e+05) |
less than MDA [MDA=3.9e-08] |
7.7e-08 [MDA=4.9e-08] (9.6e+03) |
1.2e-07 [MDA=3.6e-08] (2.7e+04) |
1.8e-06 [MDA=3.6e-07] (6.3e+04) |
data |
| 03/20/2011 18:45 | 03/21/2011 10:55 | 2.57E+06 |
7.4e-07 [MDA=4.5e-08] (1.0e+03) |
8.9e-08 [MDA=7.2e-08] (8.3e+05) |
less than MDA [MDA=5.9e-08] |
less than MDA [MDA=5.4e-08] |
5.9e-08 [MDA=3.4e-08] (5.7e+04) |
1.4e-06 [MDA=3.9e-07] (7.9e+04) |
data |
| 03/21/2011 10:55 | 03/21/2011 18:34 | 1.22E+06 |
2.1e-06 [MDA=5.6e-08] (3.5e+02) |
2.5e-07 [MDA=1.1e-07] (2.9e+05) |
6.5e-08 [MDA=4.6e-08] (1.1e+04) |
2.1e-07 [MDA=9.8e-08] (3.5e+03) |
1.6e-07 [MDA=5.4e-08] (2.1e+04) |
1.5e-06 [MDA=4.7e-07] (7.2e+04) |
data |
| 03/21/2011 18:43 | 03/22/2011 18:17 | 3.75E+06 |
2.1e-06 [MDA=2.8e-08] (3.6e+02) |
1.4e-07 [MDA=4.5e-08] (5.3e+05) |
6.5e-08 [MDA=2.7e-08] (1.1e+04) |
8.7e-08 [MDA=3.0e-08] (8.5e+03) |
1.0e-07 [MDA=2.5e-08] (3.2e+04) |
1.7e-06 [MDA=2.1e-07] (6.7e+04) |
data |
| 03/22/2011 18:25 | 03/23/2011 18:12 | 3.79E+06 |
3.4e-06 [MDA=1.7e-08] (2.2e+02) |
3.0e-07 [MDA=2.8e-08] (2.5e+05) |
1.8e-07 [MDA=1.7e-08] (4.1e+03) |
2.3e-07 [MDA=1.9e-08] (3.2e+03) |
2.3e-07 [MDA=1.4e-08] (1.4e+04) |
1.6e-06 [MDA=1.4e-07] (7.0e+04) |
data |
| 03/23/2011 18:13 | 03/24/2011 18:02 | 3.79E+06 |
4.3e-06 [MDA=1.9e-08] (1.7e+02) |
1.1e-06 [MDA=3.0e-08] (6.8e+04) |
1.1e-06 [MDA=1.8e-08] (6.7e+02) |
1.2e-06 [MDA=2.2e-08] (6.2e+02) |
8.8e-07 [MDA=1.6e-08] (3.8e+03) |
1.7e-06 [MDA=1.6e-07] (6.6e+04) |
data |
| 03/24/2011 18:07 | 03/25/2011 17:46 | 3.76E+06 |
1.8e-06 [MDA=1.6e-08] (4.2e+02) |
4.3e-07 [MDA=2.8e-08] (1.7e+05) |
5.5e-07 [MDA=1.6e-08] (1.3e+03) |
5.8e-07 [MDA=1.9e-08] (1.3e+03) |
3.4e-07 [MDA=1.4e-08] (9.7e+03) |
1.7e-06 [MDA=1.3e-07] (6.5e+04) |
data |
| 03/25/2011 17:48 | 03/26/2011 20:10 | 4.2E+06 |
1.4e-06 [MDA=1.6e-08] (5.5e+02) |
1.8e-07 [MDA=2.9e-08] (4.1e+05) |
2.6e-07 [MDA=1.6e-08] (2.8e+03) |
3.1e-07 [MDA=1.9e-08] (2.4e+03) |
1.4e-07 [MDA=1.4e-08] (2.4e+04) |
2.6e-06 [MDA=1.3e-07] (4.3e+04) |
data |
| 03/26/2011 20:13 | 03/27/2011 17:00 | 3.31E+06 |
1.4e-06 [MDA=1.7e-08] (5.2e+02) |
1.8e-07 [MDA=3.1e-08] (4.0e+05) |
3.1e-07 [MDA=1.7e-08] (2.4e+03) |
3.5e-07 [MDA=2.0e-08] (2.1e+03) |
1.3e-07 [MDA=1.5e-08] (2.6e+04) |
4.0e-06 [MDA=1.4e-07] (2.8e+04) |
data |
| 03/27/2011 17:05 | 03/28/2011 23:04 | 4.77E+06 |
8.5e-07 [MDA=1.5e-08] (8.8e+02) |
6.1e-08 [MDA=2.6e-08] (1.2e+06) |
8.8e-08 [MDA=1.4e-08] (8.4e+03) |
1.2e-07 [MDA=1.8e-08] (6.0e+03) |
3.3e-08 [MDA=1.3e-08] (1.0e+05) |
1.6e-06 [MDA=1.2e-07] (6.7e+04) |
data |
| 03/28/2011 23:04 | 03/29/2011 18:26 | 3.08E+06 |
8.4e-07 [MDA=2.0e-08] (8.8e+02) |
3.4e-08 [MDA=3.0e-08] (2.2e+06) |
6.0e-08 [MDA=1.9e-08] (1.2e+04) |
9.1e-08 [MDA=2.2e-08] (8.1e+03) |
3.5e-08 [MDA=1.7e-08] (9.6e+04) |
1.4e-06 [MDA=1.7e-07] (7.8e+04) |
data |
| 03/29/2011 18:37 | 03/30/2011 18:06 | 3.74E+06 |
3.9e-07 [MDA=2.2e-08] (1.9e+03) |
9.9e-08 [MDA=4.4e-08] (7.5e+05) |
1.4e-07 [MDA=2.2e-08] (5.3e+03) |
2.0e-07 [MDA=2.9e-08] (3.6e+03) |
3.5e-08 [MDA=1.8e-08] (9.4e+04) |
1.6e-06 [MDA=1.8e-07] (7.1e+04) |
data |
| 03/31/2011 17:22 | 04/01/2011 19:12 | 4.11E+06 |
2.0e-07 [MDA=1.8e-08] (3.7e+03) |
less than MDA [MDA=1.9e-08] |
6.4e-08 [MDA=1.7e-08] (1.2e+04) |
9.2e-08 [MDA=1.8e-08] (8.0e+03) |
less than MDA [MDA=1.1e-08] |
5.9e-06 [MDA=1.4e-07] (1.9e+04) |
data |
| 04/01/2011 19:40 | 04/02/2011 20:17 | 3.92E+06 |
1.3e-07 [MDA=1.6e-08] (5.9e+03) |
less than MDA [MDA=4.6e-08] |
less than MDA [MDA=1.1e-08] |
less than MDA [MDA=1.6e-08] |
less than MDA [MDA=1.0e-08] |
1.4e-06 [MDA=1.3e-07] (7.7e+04) |
data |
| 04/02/2011 20:26 | 04/03/2011 19:15 | 3.63E+06 |
6.3e-07 [MDA=2.7e-08] (1.2e+03) |
less than MDA [MDA=3.6e-08] |
8.1e-08 [MDA=2.5e-08] (9.1e+03) |
1.1e-07 [MDA=3.2e-08] (6.5e+03) |
less than MDA [MDA=2.2e-08] |
4.2e-06 [MDA=2.2e-07] (2.7e+04) |
data |
| 04/03/2011 19:18 | 04/04/2011 18:36 | 3.71E+06 |
6.5e-07 [MDA=1.9e-08] (1.1e+03) |
less than MDA [MDA=2.2e-08] |
4.6e-08 [MDA=1.8e-08] (1.6e+04) |
6.1e-08 [MDA=2.2e-08] (1.2e+04) |
less than MDA [MDA=1.2e-08] |
7.6e-06 [MDA=1.5e-07] (1.5e+04) |
data |
| 04/04/2011 18:39 | 04/05/2011 18:05 | 3.73E+06 |
2.9e-07 [MDA=1.7e-08] (2.6e+03) |
less than MDA [MDA=2.8e-08] |
3.2e-08 [MDA=1.6e-08] (2.3e+04) |
5.8e-08 [MDA=1.8e-08] (1.3e+04) |
less than MDA [MDA=1.1e-08] |
3.8e-06 [MDA=1.4e-07] (2.9e+04) |
data |
| 04/05/2011 18:05 | 04/06/2011 17:50 | 3.78E+06 |
2.2e-07 [MDA=1.7e-08] (3.4e+03) |
less than MDA [MDA=2.6e-08] |
5.8e-08 [MDA=1.6e-08] (1.3e+04) |
8.3e-08 [MDA=1.8e-08] (8.9e+03) |
less than MDA [MDA=1.0e-08] |
3.0e-06 [MDA=1.3e-07] (3.7e+04) |
data |
| 04/06/2011 17:50 | 04/07/2011 18:00 | 3.85E+06 |
3.5e-07 [MDA=1.5e-08] (2.1e+03) |
less than MDA [MDA=1.8e-08] |
1.4e-07 [MDA=1.5e-08] (5.3e+03) |
1.7e-07 [MDA=1.8e-08] (4.4e+03) |
less than MDA [MDA=9.9e-09] |
2.2e-06 [MDA=1.3e-07] (5.1e+04) |
data |
| 04/07/2011 18:03 | 04/08/2011 18:25 | 3.88E+06 |
1.3e-07 [MDA=1.6e-08] (5.9e+03) |
less than MDA [MDA=1.9e-08] |
3.9e-08 [MDA=1.8e-08] (1.9e+04) |
4.5e-08 [MDA=1.8e-08] (1.6e+04) |
less than MDA [MDA=1.1e-08] |
2.1e-06 [MDA=1.3e-07] (5.4e+04) |
data |
| 04/08/2011 18:26 | 04/09/2011 19:25 | 3.98E+06 |
1.4e-07 [MDA=1.5e-08] (5.2e+03) |
less than MDA [MDA=4.7e-08] |
3.2e-08 [MDA=1.6e-08] (2.3e+04) |
6.0e-08 [MDA=1.7e-08] (1.2e+04) |
less than MDA [MDA=1.0e-08] |
2.2e-06 [MDA=1.3e-07] (5.0e+04) |
data |
| 04/09/2011 19:27 | 04/10/2011 18:15 | 3.63E+06 |
1.2e-07 [MDA=1.5e-08] (6.0e+03) |
less than MDA [MDA=2.3e-08] |
9.0e-08 [MDA=1.6e-08] (8.3e+03) |
1.4e-07 [MDA=1.9e-08] (5.5e+03) |
less than MDA [MDA=1.4e-08] |
4.5e-06 [MDA=1.3e-07] (2.4e+04) |
data |
| 04/10/2011 18:15 | 04/11/2011 19:00 | 3.94E+06 |
1.0e-07 [MDA=1.6e-08] (7.2e+03) |
less than MDA [MDA=1.9e-08] |
less than MDA [MDA=1.6e-08] |
3.9e-08 [MDA=1.8e-08] (1.9e+04) |
less than MDA [MDA=1.0e-08] |
5.4e-06 [MDA=1.3e-07] (2.1e+04) |
data |
| 04/11/2011 19:11 | 04/12/2011 18:13 | 3.67E+06 |
8.1e-08 [MDA=1.6e-08] (9.1e+03) |
less than MDA [MDA=2.0e-08] |
3.5e-08 [MDA=1.6e-08] (2.1e+04) |
5.6e-08 [MDA=1.8e-08] (1.3e+04) |
less than MDA [MDA=1.1e-08] |
2.8e-06 [MDA=1.4e-07] (4.0e+04) |
data |
| 04/12/2011 18:19 | 04/13/2011 17:30 | 3.69E+06 |
8.5e-08 [MDA=1.7e-08] (8.7e+03) |
3.6e-08 [MDA=3.2e-08] (2.1e+06) |
2.6e-08 [MDA=1.7e-08] (2.8e+04) |
6.5e-08 [MDA=2.1e-08] (1.1e+04) |
less than MDA [MDA=1.0e-08] |
2.2e-06 [MDA=1.3e-07] (5.1e+04) |
data |
| 04/13/2011 17:36 | 04/14/2011 18:20 | 3.94E+06 |
9.9e-08 [MDA=2.5e-08] (7.5e+03) |
less than MDA [MDA=7.2e-08] |
7.3e-08 [MDA=3.7e-08] (1.0e+04) |
3.4e-08 [MDA=2.8e-08] (2.2e+04) |
less than MDA [MDA=1.6e-08] |
1.8e-06 [MDA=2.4e-07] (6.2e+04) |
data |
| 04/14/2011 18:20 | 04/15/2011 18:01 | 3.77E+06 |
1.0e-07 [MDA=1.7e-08] (7.2e+03) |
less than MDA [MDA=3.0e-08] |
2.3e-08 [MDA=1.3e-08] (3.2e+04) |
4.5e-08 [MDA=1.8e-08] (1.7e+04) |
less than MDA [MDA=1.1e-08] |
2.8e-06 [MDA=1.4e-07] (3.9e+04) |
data |
| 04/15/2011 18:02 | 04/16/2011 16:18 | 3.54E+06 |
4.0e-08 [MDA=1.6e-08] (1.9e+04) |
less than MDA [MDA=1.9e-08] |
1.9e-08 [MDA=1.4e-08] (3.8e+04) |
4.2e-08 [MDA=1.7e-08] (1.8e+04) |
less than MDA [MDA=1.0e-08] |
1.8e-06 [MDA=1.3e-07] (6.1e+04) |
data |
| 04/16/2011 16:18 | 04/17/2011 19:46 | 4.37E+06 |
1.3e-08 [MDA=1.2e-08] (5.8e+04) |
less than MDA [MDA=2.6e-08] |
less than MDA [MDA=9.2e-09] |
3.1e-08 [MDA=1.8e-08] (2.4e+04) |
less than MDA [MDA=9.2e-09] |
4.6e-07 [MDA=1.2e-07] (2.4e+05) |
data |
| 04/17/2011 19:47 | 04/18/2011 18:06 | 3.55E+06 |
1.8e-08 [MDA=1.1e-08] (4.1e+04) |
less than MDA [MDA=3.3e-08] |
less than MDA [MDA=1.5e-08] |
3.9e-08 [MDA=2.2e-08] (1.9e+04) |
less than MDA [MDA=1.4e-08] |
1.1e-06 [MDA=1.3e-07] (9.9e+04) |
data |
| 04/18/2011 18:08 | 04/19/2011 18:50 | 3.93E+06 |
1.5e-08 [MDA=8.3e-09] (5.0e+04) |
less than MDA [MDA=2.2e-08] |
9.2e-09 [MDA=8.0e-09] (8.0e+04) |
2.2e-08 [MDA=9.4e-09] (3.4e+04) |
less than MDA [MDA=9.3e-09] |
6.6e-07 [MDA=7.0e-08] (1.7e+05) |
data |
| 04/19/2011 18:52 | 04/22/2011 19:04 | 1.15E+07 |
1.8e-08 [MDA=3.8e-09] (4.2e+04) |
less than MDA [MDA=7.8e-09] |
1.1e-08 [MDA=3.3e-09] (6.9e+04) |
2.2e-08 [MDA=4.2e-09] (3.3e+04) |
less than MDA [MDA=3.5e-09] |
2.6e-06 [MDA=3.0e-08] (4.2e+04) |
data |
| 04/22/2011 19:04 | 04/24/2011 20:19 | 7.84E+06 |
1.3e-08 [MDA=5.0e-09] (5.7e+04) |
less than MDA [MDA=1.1e-08] |
8.9e-09 [MDA=4.6e-09] (8.3e+04) |
1.8e-08 [MDA=5.9e-09] (4.2e+04) |
less than MDA [MDA=4.0e-09] |
1.9e-06 [MDA=4.2e-08] (5.8e+04) |
data |
| 04/24/2011 20:19 | 04/27/2011 00:08 | 8.25E+06 |
1.9e-08 [MDA=5.5e-09] (3.9e+04) |
less than MDA [MDA=7.8e-09] |
1.4e-08 [MDA=5.5e-09] (5.3e+04) |
2.3e-08 [MDA=6.0e-09] (3.2e+04) |
less than MDA [MDA=5.8e-09] |
2.5e-06 [MDA=4.6e-08] (4.4e+04) |
data |
| 04/27/2011 00:08 | 04/28/2011 18:13 | 6.7E+06 |
2.0e-08 [MDA=6.9e-09] (3.7e+04) |
less than MDA [MDA=8.6e-09] |
7.4e-09 [MDA=6.3e-09] (1.0e+05) |
2.1e-08 [MDA=7.7e-09] (3.5e+04) |
less than MDA [MDA=5.2e-09] |
2.7e-06 [MDA=5.0e-08] (4.2e+04) |
data |
| 04/30/2011 21:23 | 05/02/2011 18:19 | 7.15E+06 |
7.2e-09 [MDA=4.3e-09] (1.0e+05) |
less than MDA [MDA=7.1e-09] |
less than MDA [MDA=2.7e-09] |
1.6e-08 [MDA=5.0e-09] (4.6e+04) |
less than MDA [MDA=5.6e-09] |
4.5e-06 [MDA=3.6e-08] (2.5e+04) |
data |
| 05/02/2011 18:21 | 05/06/2011 18:58 | 1.54E+07 |
4.0e-09 [MDA=2.2e-09] (1.9e+05) |
less than MDA [MDA=5.6e-09] |
8.0e-09 [MDA=1.9e-09] (9.3e+04) |
1.3e-08 [MDA=2.4e-09] (5.7e+04) |
less than MDA [MDA=3.3e-09] |
5.1e-06 [MDA=1.7e-08] (2.2e+04) |
data |
| 05/06/2011 19:00 | 05/10/2011 17:40 | 1.51E+07 |
less than MDA [MDA=1.8e-09] |
less than MDA [MDA=5.0e-09] |
4.2e-09 [MDA=2.2e-09] (1.8e+05) |
7.4e-09 [MDA=2.3e-09] (1.0e+05) |
less than MDA [MDA=3.2e-09] |
7.5e-07 [MDA=1.7e-08] (1.5e+05) |
data |
| 05/10/2011 17:40 | 05/14/2011 19:22 | 1.56E+07 |
less than MDA [MDA=1.4e-09] |
less than MDA [MDA=5.7e-09] |
3.2e-09 [MDA=1.4e-09] (2.3e+05) |
9.6e-09 [MDA=1.5e-09] (7.7e+04) |
less than MDA [MDA=2.3e-09] |
2.5e-06 [MDA=1.2e-08] (4.5e+04) |
data |
| 05/15/2011 12:32 | 05/21/2011 12:00 | 2.28E+07 |
less than MDA [MDA=1.7e-09] |
less than MDA [MDA=1.9e-08] |
less than MDA [MDA=1.3e-09] |
4.0e-09 [MDA=1.0e-09] (1.8e+05) |
less than MDA [MDA=6.8e-09] |
8.1e-07 [MDA=8.4e-09] (1.4e+05) |
data |
* Be-7 is observed normally due to its being produced by cosmic rays interacting with the atmosphere.
** The number in parentheses is the number of years that one would need to breathe the air to equal the radiation exposure of a single round trip flight from San Francisco to Washington D.C. (0.05 mSv). To see how we calculate these numbers, please visit our explanation of the equivalent dose calculation.
