Working under minimal supervision on projects based in California and other states: develop, update, and run Ramboll's Python-based Marine Emission Resolver (MARINER) program to automate the estimation of commercial marine vessel emissions; investigate air pollutant particle trajectories in areas with elevated pollutant concentrations by creating contour plots and visualizations to estimate relative contributions of regions or source sectors that potentially cause the exceedance of air quality standards set by the Clean Air Act; perform emission inventory review by comparing emission inventory data submitted at state level to the data published by EPA, present findings to management, and draft technical reports based on same as well as data, graphs, and charts pulled and prepared by junior staff members; conduct emission control analyses to evaluate air pollution control measures and strategies for meeting emissions regulations by a certain timeline and write white papers for clients discussing emission sources, chosen control measures, potential reductions, costs, feasibility, concerns, and objections; for California-based projects, conduct California Environmental Quality Act (CEQA) analyses by reviewing client-provided emissions data for completeness, creating templates for calculating local emissions, conducting quality assurance and quality control on the calculations, and using the emissions calculations to create tables for Environmental Impact Reports; calculate emissions associated with federal projects, including criteria air pollutants (CAPs), hazardous air pollutants (HAPs), and greenhouse gases (GHGs) to ensure compliance with the National Environmental Policy Act (NEPA), use the emissions calculations to create tables for Environmental Impact Statements, and describe the calculation methodology and discuss results in the statements; run EPA's Motor Vehicle Emission Simulator (MOVES) model to calculate mobile source emissions; supervise junior staff members.

Requires a Master's degree in Environmental Engineering or a related field and 3 years of experience performing emission inventory development and climate change assessments, working with emissions and air quality models including CAMx, MOVES, and HYSPLIT, and supporting air quality regulations including NEPA, CEQA, the EPA's Regional Haze Rules. Telecommuters considered. Wages offered ($114-$125K/Year) Apply online at: americas.ramboll.com/careers.