TRS compounds are formed during the anaerobic decomposition
(i.e., decay in the absence of oxygen) of organic materials,
and from certain industrial and commercial processes.
Typical sources include packing plants, tanneries, waste
treatment plants, oil and natural gas wells, and refineries.
TRS is typically composed of hydrogen sulfide, methyl
mercaptan, dimethyl sulfide, dimethyl disulfide and other
volatile compounds containing reduced sulfur.
Potential health impacts associated with low-level exposure
include headaches, depression, fatigue and nausea. Exposure
to higher levels can result in eye and respiratory
irritation, olfactory nerve fatigue and pulmonary edema, and
in cases of more extreme exposure, unconsciousness,
respiratory failure and death. Potential welfare impacts
include detrimental effects on plant life.
The State ambient air quality standards for TRS are set
forth NDEE Title 129, Chapter 2. These standards are 10 ppm as a 1-minute average and 0.10 ppm as a 30-minute
average. A National Ambient Air Quality Standard (NAAQS) has
not been established for TRS.
Nebraska Air Quality Reports – These annual
reports provide: monitor locations, air monitoring data summaries, the
ambient air quality standards, pollutant sources and their impacts, and
regional air quality reviews.
Nebraska Ambient Monitoring Network Review Reports – These annual reports describe
the Nebraska Ambient Air Monitoring Network including changes and
If the above references do not provide the information you require, please
contact the Air Quality Division at either (402) 471-2186 or (402) 471-4159
to inquire about the availability of additional information, including
ambient air quality monitoring data.
Or send an email inquiry to:
The TRS data available on this web site may be subject to
change based upon periodic quality assurance reviews.
Starting in 2004, each set of monthly data on this web site
has a revision date listed on it.