Air Quality Services
ERG’s internationally recognized air quality specialists support federal, regional, state, local, and tribal government agencies in their work to ensure that all citizens have safe, healthy air to breathe. To understand air pollution sources and levels, we identify and characterize point, nonpoint (area), mobile, and natural air pollution sources; develop emission factors and air emission inventories; and perform air quality modeling. In parallel, we support regulatory development and implementation to reduce ambient air pollution. For example, we identify, evaluate, and recommend viable emission control options; analyze regulatory impacts; provide technical support for drafting rule language and responding to comments; and develop guidance and training for regulated communities. In addition, ERG air quality engineers and scientists review and prepare permits, work that covers hundreds of facilities nationwide and spans virtually every major air quality rule.
Regulatory Development
- New Source Performance Standards (NSPS) rule development support
- National Emission Standards for Hazardous Air Pollutants/Maximum Achievable Control Technology (NESHAP/MACT) rule development support
- GHG rule development and implementation support
- Pollution control feasibility evaluations
- Primary and secondary environmental and energy impact analyses
- Cost and economic impact analyses
- Compliance monitoring and recordkeeping procedures development
- Response to public comments
- Rule implementation assistance, guidance, and training
Source Characterization and Modeling
- Characterization of emission processes and sources
- Correlation of emission sources and ambient concentrations
- Analysis of emission and ambient concentration trends
- Emission, air dispersion, and photochemical modeling