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| Air Quality Assessment Services |
Air quality impact assessments have become
the primary method used to evaluate the effect
of new or modified air emission sources on
air quality, since the enactment of the Federal
Clean Air Act of 1977. 
An integral part of air quality impact
studies
for new or expanding facilities is
the use
of emission inventories and dispersion
modeling.
Agencies grant new permits based on
the results
of air quality impact studies and have
adopted
strict guidelines concerning the selection
of models and assessment techniques.Enviroscientists technical and support staff facilitate permit acquisition or compliance activities through
The specific types of air quality assessments in which Enviroscientists can assist natural resource development and industrial clients are summarized below. Regulatory Analysis and Permit Acquisition Services Complete and technically competent permit applications are essential to the timely acquisition of required permits. This is especially important since the development of the Federal Title V Operating Permit program and the implementation of delegated programs by most states. Enviroscientists' knowledge of federal, state, and local regulatory programs, individual agency guidelines and protocols, and understanding of industrial processes which require an air quality permit assures that our staff can meet the requirements to complete applications in a prompt manner. Once a facility has obtained an air quality permit (particularly if the permit is a non-Title V or non-Prevention of Significant Deterioration (PSD) permit), the status of that permit needs to be managed to ensure that as the facility develops and modifies, a valid permit is maintained and additional regulatory programs are not required. Enviroscientists' knowledge of the federal, state, and local regulatory programs, individual agency guidelines and protocols, as well as an understanding of industrial processes also allows Enviroscientists to anticipate potential permit modifications or identify ways to minimize the need to modify the permit. Emission Inventories and Assessments The amount of emissions from a facility affects the status of that facility relative to various regulatory programs, such as New Source Review (NSR), Title V, Title III, and PSD. Enviroscientists' knowledge of industrial processes and the potential sources of emissions allow Enviroscientists to provide timely and accurate emission inventories. These inventories can be used to manage the development of the facility to maintain existing regulatory requirements or actively address future requirements. Enviroscientists' emission inventories and assessment services include general facility emission inventories or more specific criteria air pollutant inventories and hazardous air pollutant inventories, including fugitive emissions from mobile sources. Enviroscientists uses these inventories to complete assessments of the facility's permit and regulatory status and requirements. Dispersion, Visibility, and Offsite Consequence Analysis Modeling Services A wide selection of dispersion, visibility, and offsite consequence analysis models are available to evaluate multiple emission sources, these include the following:
Ambient Monitoring Services Many regulated industries are required to operate ambient monitors as a result of permit conditions, PSD regulations, or acid rain monitoring requirements. In addition, many industries are pro-active and independently monitor other pollutants and/or climatological parameters to ensure that sufficient information is available to make informed decisions regarding future projects and monitoring requirements. Enviroscientists can assist industry by providing quality ambient monitoring and reporting services for ambient monitoring networks, which include:
Emission Control Technology Evaluations and Analysis Many regulatory programs require that an emission control technology analysis be performed for permit modifications or new sources. Enviroscientists is able to assist clients with these analyses by providing the following types of control technology evaluations.
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