AIR QUALITY

The bulk of the firms' air quality work involves environmental air quality studies land use projects to support Environmental Impact Reports that are in support of both private and public projects. Project types have included specific plans for a variety of land use types, office centers, wastewater treatment facilities, waste management facilities, quarries, and other industrial facilities. The firm also assists local communities in developing air quality policies for incorporation into General Plans.

Many projects involve the analysis of air quality impacts from both direct and indirect sources of air pollutants, such as transportation facilities. Transportation projects can involve considerable air quality technical aspects with regulatory challenges that can be complex. This is especially true with federal projects, where SIP conformity issues arise. Through years of conducting environmental noise and air quality studies for local, state and federal agencies, the firm has developed considerable experience in dealing with both the technical and policy issues involved with air quality. Conformity issues can be the largest hurdle for urban projects, especially those that involve federal action. Illingworth & Rodkin Inc.'s' staff have dealt successfully with these issues on a wide variety of projects ranging from large new freeway projects to simple urban intersection modifications.

Environmental Studies
- Assessments for environmental studies (EIR, IS, EIS, EA)
- Transportation projects
- New residential developments
- Control plans and ordinances
- Ordinance compliance
- Conformity determinations
- Peer Review

Computer Modeling
- Air Pollutant emissions estimation using EMFAC, Mobile, AP-42
- Microscale air quality traffic modeling using CALINE4, CAL3QHC
- Stationary air pollution source modeling using EPA-approved models (e.g., SCREEN or ISCST)
- Analysis of meteorological data