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Historical AIRNET Action Levels
Action levels have been established by LANL and are formally documented in each revision of the AIRNET Quality Assurance Project Plan or the Sampling and Analysis Plan for the Radiological Air Sampling Network (AIRNET). Action levels are air concentration values that indicate there may be a non-routine emission of a radionuclide. Current values for these are found on the Action Levels page. The tables below outline the action levels from earlier versions of the quality plans.
1998 Investigation Levels for AIRNET Concentrations
Analyte
(units) |
Regional (Bkgr)
Stations |
FFCA
Stations * |
Perimeter
Stations |
LANL Onsite Stations and Offsite ER |
LANL Waste Site and Onsite ER |
| Alpha (pCi/filter) |
5 |
5 |
6 |
10 |
10 |
| 241Am (aCi/m3) |
3 |
4 |
3 |
20 |
17 |
| Beta (pCi/filter) |
50 |
50 |
50 |
50 |
50 |
| 3H (pCi/m3) |
2 |
5 |
6 |
7.5 a |
30 c |
| 238Pu (aCi/m3) |
1 |
1 |
1 |
10 |
5 |
| 239+240Pu (aCi/m3) |
1.5 |
4 |
2.5 |
50 |
14 |
| 234U (aCi/m3) |
50 |
40 |
50 |
50 |
50 |
| 235U (aCi/m3) |
4 |
2 |
4 |
4 |
4 |
| 238U (aCi/m3) |
40 |
60 |
40 |
50 |
50 |
1998 Alert Levels for AIRNET Concentrations
Analyte
(units) |
Regional (Bkgr)
Stations |
FFCA
Stations * |
Perimeter
Stations |
LANL Onsite Stations and OffsiteER |
LANL Waste Site and Onsite ER |
| Alpha (pCi/filter) |
15 |
15 |
18 |
30 |
30 |
| 241Am (aCi/m3) |
15 |
20 |
15 |
100 |
85 |
| Beta (pCi/filter) |
150 |
150 |
150 |
150 |
150 |
| 3H (pCi/m3) |
10 |
25 |
30 |
37.5 b |
150d |
| 238Pu (aCi/m3) |
5 |
5 |
5 |
50 |
25 |
| 239Pu (aCi/m3) |
7.5 |
20 |
12.5 |
250 |
70 |
| 234U (aCi/m3) |
250 |
200 |
250 |
250 |
250 |
| 235U (aCi/m3) |
20 |
10 |
20 |
20 |
20 |
| 238U (aCi/m3) |
200 |
300 |
200 |
250 |
250 |
Footnotes and Abbreviations
- a
- Exception for Station 25 = 49 pCi/m3
- b
- Exception for Station 25 = 245 pCi/m3
- c
- Exception for Station 35 = 500 pCi/m3
- d
- Exception for Station 35 = 2500 pCi/m3
- Invest
- Investigation
- ER
- Environmental Restoration program activities
- *
- All FFCA stations, regardless of "grouping," will be compared against the action levels for FFCA locations.
Note: See the project plan (ENV-MAQ-AIRNET, R6) for listing of stations in each group (i.e., regional, perimeter, onsite, etc.)
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