Apply air quality modeling expertise with Langan from any Langan location, supporting permitting projects through AERMOD, MOVES, and technical analysis.
Langan seeks an Air Quality Permitting and Dispersion Modeling Specialist for projects serving clients throughout the United States. This specialist prepares emissions calculations, compliance reports, permit applications, and dispersion modeling analyses. The work includes Title V, PSD, Current Source Review, and Environmental Impact Statement support. You will communicate technical products to clients and agencies while contributing to multidisciplinary engineering teams.
Key Responsibilities: Support air quality permitting and dispersion modeling projects
Develop, execute, and analyze air quality dispersion models
Evaluate impacts using AERMOD, MOVES, and CALPUFF




Prepare emissions calculations, compliance reports, and permit applications
Communicate technical work products to clients and agencies
Requirements: Bachelor’s degree in environmental or chemical engineering
Four-plus years in air quality permitting and modeling
Experience with AERMOD, CALPUFF, AERSCREEN, or MOVES
Experience preparing permit applications and detailed emissions calculations
Strong analytical, judgment, and problem-solving capabilities
Use dispersion modeling, permitting, and emissions analysis skills to deliver air quality consulting projects with Langan nationwide.

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📌 Air Quality Modeling Specialist (Ontario)
🏢 Langan Engineering & Environmental Services
📍 Ontario