Part-time On-Call Senior Project Noise & Air Quality Specialist
About The Position
Langan is seeking an experienced Senior Noise & Air Quality Specialist to support CEQA-focused environmental planning efforts across California. This is a part-time on-call role designed for a highly experienced technical specialist who can provide targeted support on an as-needed basis for land development, transportation, and infrastructure projects. In this capacity, you will act as a senior technical advisor and contributor, partnering closely with CEQA subject matter experts, environmental planners, and project managers to deliver technically sound, defensible environmental analyses and documentation.
Requirements
- 12+ years of experience preparing and reviewing noise/vibration, air quality, and GHG analyses for CEQA projects (NEPA experience a plus);
- Demonstrated ability to independently produce or review defensible CEQA technical documentation;
- Strong working knowledge of California regulatory requirements, agency guidance, and accepted methodologies for noise, air quality, and GHG;
- Experience conducting ambient noise field measurements using ANSI Type I sound level meters;
- Familiarity with 23 CFR Part 772 and the Caltrans Traffic Noise Analysis Protocol;
- Proficiency with industry-standard tools such as FHWA TNM, RCNM, CadnaA, SoundPLAN, or similar;
- Proficiency with CalEEMod, EMFAC, and AERMOD for air emissions modeling;
- Experience supporting or preparing Health Risk Assessments (HRAs);
- Experience coordinating with regulatory agencies such as BAAQMD, SCAQMD, EPA, CARB, and local jurisdictions;
- Excellent technical writing and communication skills with the ability to provide clear, concise, and defensible analyses.
Responsibilities
- Serve as a senior technical resource for noise, vibration, air quality, and greenhouse gas (GHG) analyses across CEQA-driven projects;
- Prepare and/or review technical studies and CEQA documentation (e.g., EIRs, IS/MNDs, technical appendices) related to noise and air quality;
- Develop and validate noise modeling and impact assessments for construction, operational, and transportation-related sources, including recommended mitigation measures;
- Support project scoping and strategy, including identification of appropriate methodologies, thresholds, and regulatory considerations;
- Provide peer review, QA/QC, and advisory input on technical analyses, modeling approaches, and impact conclusions;
- Conduct or oversee air quality and GHG emissions modeling and documentation in support of CEQA compliance;
- Collaborate with internal teams to integrate technical findings into comprehensive environmental documents and compliance strategies;
- Support responses to agency comments, public review feedback, and legal defensibility considerations;
- Engage in client coordination and multidisciplinary collaboration as needed to support project delivery; and
- Contribute expertise toward refining internal training, best practices, methodologies, and technical guidance for noise and air quality analyses.
Benefits
- full-time employment company paid medical, dental, and vision coverage
- life insurance
- short- and long-term disability insurance
- paid pregnancy disability leave
- 401(k)/Roth with company match
- paid time off including parental and military leave
- employee referral and professional license bonuses
- educational reimbursement
- employee resource groups
- flexible work schedules
- extensive training
- wellness programs
- buddy and mentoring programs
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What This Job Offers
Job Type
Part-time
Career Level
Senior
Education Level
No Education Listed
