Clean Air Act Engineer

ERG

Remote

Full-time

Senior

5+ yrs

Salary not listedPosted 1w ago

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Real job — pulled straight from ERG’s careers page · Verified October 18, 2026 · No reposts.

ERG is hiring a Clean Air Act Engineer — a full-time, remote role. Apply directly on ERG's careers page below.

Clean Air Act Engineer

Team: Engineering and Science

Location: Fairfax, VA, Washington, DC, Arlington, VA, Alexandria, VA

Commitment: Full Time

Workplace Type: remote

ERG is a research and consulting firm that provides a wide range of support to federal, state, and commercial clients. ERG offers multidisciplinary teams with nationally recognized skills in engineering, science, economics, public health, informational technology, and communications. We hire people with the best minds and then provide them with a vibrant and flexible environment in which to develop their careers. The qualified individual must be highly motivated with the skills to prioritize, perform, and communicate effectively in a fast-paced environment.

ERG is seeking a highly qualified candidate who possesses exceptional management, organizational, and communication skills, with a strong background in Clean Air Act statutes, regulations, and policy—particularly in permitting and enforcement.

Job Description:

Perform, review, and evaluate air dispersion modeling analyses using tools such as AERSCREEN, AERMOD, including:
Performing modeling applicability determinations consistent with federal, state, and local guidance
Identifying representative meteorological data
Establishing representative source parameters and potential emissions rates
Establishing background concentrations and identifying nearby sources to be explicitly modeled consistent with applicable federal and state guidelines
Evaluating NO to NO2 conversion and secondary pollutant formation consistent with applicable federal and state guidelines
Evaluating compliance with National Ambient Air Quality Standards (NAAQS), significant impact levels (SILs), and PSD increments
Perform toxic air pollutant evaluations consistent with federal, state, local, and Tribal agency air toxics programs using AERSCREEN and other screening tools
Draft Clean Air permits, including minor source, Title V, PSD, and major nonattainment permits
Ensure drafted permits comply with SIP-approved rules, EPA regulations and policies, and applicable statutes
Review proposed permits from State and local agencies for conformity with regulations and policy, including applicability determinations, potential to emit, monitoring requirements, and control technologies
Draft and review control technology determinations, including BACT and LAER analyses
Review draft regulations to ensure conformance with EPA requirements
Research alternative approaches to compliance with EPA regulations based on similar State rules
Mentor and provide guidance to less experienced staff
Manage multiple projects and small project teams simultaneously
Collaborate and communicate effectively with clients and internal stakeholders
Prepare clear, thorough technical documents and reports

Qualifications and Skills:

B.S. or M.S. in Engineering, preferably Civil, Mechanical, Chemical, or Environmental
Solid knowledge of Clean Air Act laws and regulations as they pertain to permitting
Minimum of five years of experience completing, reviewing, and/or evaluating air dispersion modeling analyses
Proficiency in AERMOD, AERSCREEN, AERMET, AERSURFACE, and AERMET, and familiarity with EPA’s Guideline on Air Quality Models (40 CFR Part 51, Appendix W)
Experience with VISCREEN, CALPUFF, and/or other visibility models preferred
Minimum of five years of experience implementing Clean Air Act regulations, including drafting and/or reviewing permits or permit applications
Proficiency in Microsoft Excel and Word
Strong writing and communication skills, with the ability to present project findings effectively to a variety of stakeholders, both orally and in writing
Excellent time management skills, with the ability to manage multiple projects simultaneously, meet tight deadlines, and deliver high-quality, client-ready work

ERG offers competitive salaries and excellent benefits, including health and dental insurance, life insurance, long-term disability, educational benefits, FSAs, a generous 401k plan, profit sharing, an EAP, 11-20 paid vacation days per year, 10 paid holidays per year, 56 hours or more of sick leave (based on the state you work in) per year (pro-rated for part-time) and more. The salary range for all positions depends on the years and type of experience.

ERG is an equal opportunity employer and complies with all applicable EEOC regulations. All qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual preference, national origin, disability, or status as a protected veteran.

Please be aware, the only authentic corporate domain for ERG is https://www.erg.com. ERG may, on occasion, screen applicants via telephone or video interviews via Skype, Teams, GoToMeeting, or another type of video platform. However, any candidate extended a job offer might be asked to meet in person with an ERG employee before providing confidential personal information associated with new employment.

If you’re a qualified individual with a disability or a disabled veteran, you have the right to request a reasonable accommodation if you are unable or limited in your ability to use or access ERG’s online application process as a result of your disability. To request accommodation, please contact Human Resources via email at Resumes-Lex@erg.com or call (781) 674-7293.

ERG fosters a friendly, flexible work environment. ERGers are dedicated to serving clients who are committed to making the world a better place. We promote and recognize principles of fairness and respect in the work we do, the partnerships we foster, and the culture we value both within and outside of our organization.