Air Concentration Summaries from |
Environmental Surveillance Reports |
TA-49 |
------------------------------------------------------ |
Calendar | Total Air | Total # | # Samples | Air Concentrations |
Year | Volume (m3) | Samples | < MDA | ------------------------------------------------------ |
Min | Max | Mean | Std.Dev. | Units |
==================================================================================================== |
Am-241 |
1975 | 2 | 1 | 2 | aCi/m3 |
1977 | 92102 | 4 | 4 | -1.6 | 2.7 | 0 | 3.7 | aCi/m3 |
1978 | 73746 | 3 | 3 | -2.7 | 2.4 | 0 | 5.4 | aCi/m3 |
1979 | 84773 | 4 | 4 | -1.8 | 1.8 | -0.4 | 3.5 | aCi/m3 |
1980 | 92914 | 4 | 3 | -1.7 | 6.7 | 2.2 | 3.5 | aCi/m3 |
1981 | 52769 | 4 | 4 | 0 | 2.3 | 0.9 | 2.2 | aCi/m3 |
1982 | 86005 | 4 | 4 | -1.4 | 0.9 | 0 | 0.5 | aCi/m3 |
1987 | 77741 | 4 | 4 | 0.4 | 2.5 | 1.2 | 0.9 | aCi/m3 |
1988 | 61037 | 3 | 2 | 0.8 | 17.6 | 6.6 | 9.5 | aCi/m3 |
1990 | 41927 | 2 | 2 | 1.7 | 1.8 | 1.7 | aCi/m3 |
1991 | 101596 | 4 | 4 | 0.6 | 1.6 | 1.1 | 0.6 | aCi/m3 |
1992 | 35544 | 2 | 2 | 0 | 0 | 0.5 | aCi/m3 |
1993 | 38500 | 3 | 2 | 0.8 | 2.2 | 1.5 | 1.4 | aCi/m3 |
1994 | 59000 | 4 | 2 | 0.7 | 12.3 | 4.6 | 10.7 | aCi/m3 |
1995 | 4 | 1 | 0 | 5.1 | 3.4 | 4.7 | aCi/m3 |
1996 | 4 | 1 | 1.4 | 12.1 | 4.8 | 5 | aCi/m3 |
1997 | 4 | 3 | 0.4 | 4.2 | 1.9 | 1.6 | aCi/m3 |
1998 | 4 | 4 | 1.2 | 4 | 2.7 | 1.3 | aCi/m3 |
1999 | 4 | 4 | 0.9 | 5.5 | 3 | 2 | aCi/m3 |
2000 | 4 | 4 | -0.9 | 1.5 | 0.4 | 1.2 | aCi/m3 |
===================================================================================================== |
Tuesday, December 24, 2002 | Page 2 of 10 |