Air Quality

Regulatory Compliance Reviews

C&S performs air emission surveys to assess the compliance of existing sources with federal and state regulatory requirements. This includes an evaluation of operating units, air pollution control equipment, and total facility emissions.


The permit application process for air includes estimating source emissions, assessing air quality impacts associated with the emissions, and preparing appropriate forms, data, and maps for each application packet. This can be a particularly daunting task, especially when applying for a permit under Title V. C&S has assisted many customers in developing and applying for both state-level and federal Title V permit applications.

Air Quality Modeling

Modeling is a proven tool in estimating contaminant concentrations at points of concern to ensure compliance with applicable regulations. This is particularly important with high transportation areas such as airports and highway. Air quality modeling programs are used, where appropriate, to estimate the effects of contaminant emissions from industrial sources. The expert air quality specialists at C&S can assist you in determining what the best method is to improve air quality for your project or facility.

Emissions Testing

If stack testing is required, C&S coordinates testing to ensure that proper methodologies are used and that testing occurs during the proper operations at the facility.

Compliance Planning

C&S prepares capping plans and compliance plans in accordance with state and federal regulations. By capping potential emissions below the applicability threshold, facilities are removed from additional regulatory requirements associated with Title V permitting. Compliance plans, including a RACT analysis, are prepared for facilities where various control technologies can be identified for applicability to facility processes and demonstrated to be technically and economically feasible. Various control technologies are identified for applicability to facility processes and for technical and economic feasibility.

Compliance Actions

Actions to bring a facility into compliance with requirements such as those found in the various NESHAPS regulations are completed by our team of experts. An evaluation of the economic, operational, and environmental parameters involved is conducted in partnership with the industrial facility’s staff. Accidental release prevention regulations require facilities handling more than threshold quantities of regulated substances to develop risk management programs aimed at preventing accidental releases. Our engineers and scientists assist facilities in developing and implementing these plans.

Design of Pollution Control Systems

C&S assists in evaluating the need for air pollution control equipment. Where needed, equipment is selected and designed to provide adequate environmental protection without adversely affecting operations and budgets. Our experts can work to provide complete continuity from conceptual design through installation and startup.