Noise & Air Quality Specialist

langan•Irvine, CA

1d•Hybrid

About The Position

Langan is seeking an experienced Noise & Air Quality Specialist in California to support CEQA-focused environmental planning efforts for land development, transportation, and infrastructure projects throughout California. This role will serve as a senior technical contributor, reporting to a CEQA Subject Matter Expert and working closely with environmental planners and project managers to deliver technically sound and legally defensible environmental documentation.

Requirements

8+ years of experience preparing, managing, and reviewing noise/vibration, air quality, and GHG analyses for projects subject to CEQA (NEPA experience a plus).
Strong understanding of California and federal environmental regulations, current agency guidance, and accepted methodologies related to noise/vibration, air quality, and GHG.
Hands-on experience conducting ambient noise field measurements using ANSI Type I sound level meters, including interpretation and documentation of results.
Working knowledge of 23 CFR Part 772 and the Caltrans Traffic Noise Analysis Protocol.
Technical background modeling construction, stationary, and mobile noise and vibration using computer-based models and spreadsheet analytical tools.
Proficiency with FHWA TNM, FHWA RCNM, CadnaA, SoundPLAN, or equivalent noise modeling software.
Proficiency with CalEEMod, EMFAC, and AERMOD for construction and operational air emissions modeling.
Experience preparing or supporting Health Risk Assessments (HRAs), including toxic air contaminant exposure modeling and evaluation of impacts to sensitive receptors.
Direct experience coordinating with regulatory agencies such as BAAQMD, SCAQMD, EPA, CARB, and other local, state, and federal agencies.
Excellent technical writing, organizational, and communication skills.

Responsibilities

Serve as a technical specialist for noise and vibration, as well as air quality and greenhouse gas (GHG) issues on CEQA-driven projects, supporting environmental review and entitlement processes.
Lead and contribute to the development of noise and vibration analyses, including preparation of technical reports and CEQA documentation (EIRs, IS/MNDs, and supporting appendices).
Develop comprehensive noise modeling and impact assessments for construction, operational, and transportation-related sources, including identification of mitigation measures.
Support project scoping efforts, including identification of applicable noise/vibration thresholds, methodologies, and regulatory requirements.
Provide technical review, quality control, and internal advisory support for noise modeling, measurements, and impact evaluations.
Lead and contribute to the development of air quality and GHG analyses, including emissions modeling and documentation for CEQA compliance.
Collaborate closely with CEQA project managers and subject matter experts to integrate noise, air quality, and GHG analyses into broader environmental documents and compliance strategies.
Coordinate with local, regional, state, and federal agencies and assist with responses to agency comments and public review feedback.
Participate in client coordination and multidisciplinary collaboration with planners, engineers, and other technical specialists.
Contribute to the refinement of technical approaches, best practices, and guidance within Langan’s noise and air quality practice.