LANL Environment Air Particulate Matter Data

Total Particulate Matter Air Sampling

In September 2001, LANL initiated a multi-year study to monitor the composition of particulate matter and volatile organic compounds in the ambient atmosphere in Los Alamos County and to provide better background data for these types of constituents for use in the event of an emergency. Data are downloaded from Tapered Element Oscillating Microbalance (TEOM) samplers every six (6) hours. In order to provide the most current data possible, the data have not been fully validated and verified. Two TEOM samplers are present at each sampling site:

• PM 2.5
• Used for measuring particulate matter less than 2.5 micrometers in diameter.
• PM 2.5 measurements represent fine particles that are inhaled deeply into the lung. Sources of these fine particles include internal combustion engines, forest fires, power plants, and atmospheric processes such as condensation and smog formation.
• PM 10
• Used for measuring particulate matter less than 10 micrometers in diameter.
• PM 10 measurements include the PM 2.5 particles and larger particles such as those produced from “mechanical” disturbances such as unpaved roads, construction activities, material handling, and wind storms.

TEOM Sampler Data Readings

• LA Hospital
• White Rock Fire Station
• TA-54 Kave (Mobile)