John Gill is a Senior Scientist based in Pennsylvania with more than 20 years of experience focused on air quality modeling, regulatory compliance, air permitting, and hazardous air pollutant risk assessments.
With expertise in regulatory modeling strategies, John specializes in modeling the requirements of Prevention of Significant Deterioration (PSD) and New Source Review (NSR), National Ambient Air Quality Standards (NAAQS) assessments, and toxic risk assessments for facility modifications and capital projects. He has supported the construction and expansion of coal, oil, or natural-gas-fired power generating facilities, as well as pipelines and compressor stations. His renewable energy projects include RR9 air quality and conformity analyses for FERC.
John brings deep knowledge of regulatory air quality models, including AERMOD, CALPUFF, VISCREEN, PLUVUEII, AERSCREEN, and SCREEN3. His understanding of air quality modeling and the approaches used in air quality impact assessments streamlines the process for clients and avoids potential permitting delays. John’s experience spans many industries, including power generation, landfill, aerospace, steelmaking, pharmaceutical, boat manufacturing, chemical demilitarization, and the oil and gas sector.