Air Quality Consulting, Permitting & Compliance Services
[Air Quality Consulting & Regulatory Support]Understand and Manage Air Quality Risks With Confidence
Air quality plays a critical role in environmental compliance, human health, and project viability. Whether you are evaluating indoor air conditions in an occupied building, preparing air emissions permits for a facility, or maintaining compliance with federal and state regulations, understanding and managing air quality is essential. Poor air quality can affect employee health, public safety, regulatory standing, and a project’s ability to move forward.
At CRB, we help clients identify, evaluate, and manage air quality issues with technically sound, practical, and defensible solutions. From indoor air quality assessments to complex air emissions permitting and regulatory compliance, our approach connects technical data with meaningful interpretation so you understand not only what the results are, but what they mean for your project or facility.
For more than 34 years, CRB has provided air quality consulting and permitting services as part of our comprehensive environmental services portfolio. Our clients include property owners, developers, industrial operators, facility managers, and legal and regulatory teams who need accurate air quality information, effective permitting strategies, and reliable compliance support. With over 200,000 projects completed, CRB offers expertise that is grounded in experience and focused on results.
What Air Quality Services Are — and Why They Matter
Air quality services cover a broad range of technical, regulatory, and risk-management requirements.
For indoor environments, air quality assessment focuses on identifying and managing potential exposure risks such as:
• Mold and microbial growth
• Volatile organic compounds (VOCs)
• Sewer gas and nuisance odors
• Radon and asbestos
• Vehicle exhaust and carbon monoxide
Indoor air quality concerns not only affect occupant comfort and health, but can also create regulatory, legal, and liability issues for owners, managers, and employers.
For industrial and commercial facilities, air quality work focuses on:
• Understanding emission sources
• Complying with federal, state, and local air regulations
• Obtaining permits required to construct and operate emissions-producing equipment
• Maintaining ongoing compliance and reporting
Effective air quality assessment and regulatory support helps:
• Protect human health
• Maintain regulatory compliance
• Support financing, development, and operations
• Provide defensible documentation for agencies, lenders, and stakeholders
How CRB Conducts Air Quality Assessments
CRB combines experienced field personnel, proven methods, and clear reporting to deliver air quality services that are defensible, practical, and decision-focused.
Our indoor air quality (IAQ) assessments begin with identifying potential sources of concern and evaluating actual conditions within the building or occupied space.
Typical indoor air quality services include:
• Evaluation of mold, asbestos, radon, odors, and VOCs
• Identification and characterization of sewer gas and nuisance odors
• Assessment and documentation of indoor air quality conditions
• Professionally certified inspections and recommendations
• Evaluation of vehicle carbon monoxide emissions using EPA MOVES modeling tools
We identify potential air quality issues, quantify exposure potential when needed, and provide practical recommendations to reduce risk and improve conditions.
Air Emissions Permitting & Regulatory Support
Air emissions permitting and compliance can be complex, highly technical, and heavily regulated. CRB provides comprehensive support for both construction and operating air permits at the state and federal level.
Our approach is to:
• Understand your facility’s emissions sources
• Evaluate applicable regulations and permitting pathways
• Develop strategies that satisfy regulatory requirements without over-burdening operations
Our air quality permitting and regulatory services include:
• Air Construction and Operating Permits: Preparation and submission of state and federal permit applications tailored to facility operations.
• Permit Strategy Development: Evaluation of emission controls, exemptions, rule applicability, offsets, and qualifying criteria.
• Prevention of Significant Deterioration (PSD) Permitting: Applicability evaluations and preparation of complex PSD permit applications.
• Title V Permitting: Full Title V support including applicability review, application preparation, compliance program development, recordkeeping systems, and fee evaluation.
• Regulatory Agency Coordination: Direct interaction with permitting agencies to resolve technical and regulatory issues efficiently.
Emissions Evaluation, Reporting & Compliance
In addition to permitting, CRB provides a full suite of technical and compliance services related to emissions evaluation and regulatory reporting, including:
• Emissions & Control Technology Evaluation: Identification and quantification of controlled and uncontrolled emission sources.
• Toxic Release Inventory (TRI) Reporting: Determination of reporting applicability, emission calculations, and SARA Section 313 submissions.
• NESHAP Analysis: Evaluation of hazardous air pollutant usage, emissions calculations, and regulatory reporting.
• Annual Operating Reports: Preparation and submission of routine air emissions reports.
• Air Compliance Audits: Facility and record audits to evaluate compliance status and support corrective actions.
• Atmospheric Dispersion Modeling: Use of accepted models such as EPA SCREEN, CALMET/CALPUFF, ISCST, and others for regulatory support, planning, and impact analysis.
[The CRB Air Quality Process]
Assessment & Regulatory Review
We evaluate your site, operations, and regulatory context.
Field Evaluation & Data Collection
We perform inspections, monitoring, and sampling as needed.
Technical Analysis & Modeling
We evaluate results, perform modeling, and interpret impacts.
Reporting, Permitting & Compliance Support
We prepare documentation, permit applications, and compliance plans.
Ready to Address Air Quality and Regulatory Risk?
Air quality issues can affect health, compliance, operations, and project approvals.
Talk to a CRB environmental professional today about your air quality and air permitting needs.
Frequently Asked Questions
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Indoor air quality (IAQ) testing evaluates the quality of air inside buildings to identify potential health or comfort concerns such as mold spores, volatile organic compounds (VOCs), odors, carbon monoxide, radon, or other contaminants.
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IAQ testing is often performed when occupants experience health symptoms (allergies, headaches) odors, or moisture issues, after water damage, before occupancy, during real estate transactions, or when there are concerns about mold, ventilation, or chemical exposure.
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Many industrial, manufacturing, and commercial facilities require air permits depending on equipment type, fuel usage, and emission levels. CRB helps determine whether your facility requires a permit and which regulations apply.
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CRB provides:
Indoor air quality (IAQ) assessments
Mold, VOC, odor, and radon evaluations
Air emissions permitting
Title V permitting support
Air compliance audits
Emissions calculations and reporting
Air dispersion modeling
Regulatory agency coordination
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Indoor air quality assessments can often be completed within days while permitting and regulatory projects may take weeks depending on complexity and agency review timelines.