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Overview of Air Pollutants and Management Strategies – Env 247 – February 24, 2011. Classification of Air Pollutants. Criteria Pollutants. Pollutants for which National Ambient Air Quality Standards (NAAQS) have been established: Particulates (PM 10 ) Sulfur Oxides (SO x )
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A health-based toxic air pollutant control program that regulates 105 air pollutants emitted from stationary sources.
Emissions of toxic air pollutants must be reduced such that the resulting modeled ambient air levels are below health-based acceptable ambient air levels at the property line.
Regulated facilities must submit a complete air toxic emissions report once every 3 years.
HCl: Hourly Limit
Carbon disulfide: 24-hour limit
EtO: Annual limit
- number of cycles per year
- emission of EtO per cycle
- stack height, location
- exhaust temperature, velocity, etc.
- all buildings, structures, etc.
- all emission information
If facility’s emissions of any TAP are above the TPER, facility must:
expressed as a
single point of
or as an isopleth
Constituent Emission Rate
- Highest concentration = 8.47 x 10-6 milligrams/m3
- Highest concentration ~ 31% of AAL at one spot
- Vast majority of area is less than 10% of the AAL
e.g. kellygreen = 0.003 µg/m3 = 0.000003 milligrams/m3 = 11% of AAL
Regulatory Actions Aimed towards Emergency Preparedness to Prevent and Mitigate Releases
Facilities with SIC codes 20-39 who manufacture or process more than 25,00 lbs/yr or use more than 10,000 lbs/hr of listed toxic chemicals must report annual releases to the environment .
Prevention of Accidental Releases –
Hazardous Substances Defined as:
Any chemical listed under Section 112(r) or any other chemical which may, as a result of short-term exposures, cause death, injury, or property damage due to their toxicity, reactivity, or corrosivity.
Owners/operators of stationary sources subject to Section 112 (r) that use, store or process listed hazardous chemicals at or above designated thresholds must implement a Risk Management Program the includes -
Owners/operators of stationary sources that produce, process, handle or store any listed substance or other extremely hazardous substance below the threshold quantity must develop and implement plans to –