Part-time On-Call Senior Project Manager – Noise

Langan Engineering & Environmental Services

Senior Project Manager - Noise supporting CEQA-focused environmental planning efforts across California. Act as a senior technical advisor and contributor for projects in land development and transportation.

Posted 6/18/2026part-timeSan Francisco • California • 🇺🇸 United StatesSenior💰 $54 - $82 per hourWebsite

About the role

Key responsibilities & impact

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;
Contribute expertise toward refining internal training, best practices, methodologies, and technical guidance for noise and air quality analyses.

Requirements

What you’ll need

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

Benefits

Comp & perks

full-time employment company paid medical, dental, and vision coverage
life insurance, short- and long-term disability insurance, and 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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Hard Skills & Tools

noise analysisvibration analysisair quality analysisGHG analysisCEQA documentationnoise modelingimpact assessmentsambient noise field measurementsHealth Risk Assessments (HRAs)defensible technical documentation

Soft Skills

technical writingcommunicationpeer reviewcollaborationclient coordinationadvisory inputproject scopingstrategic planningbest practices developmenttraining refinement