We promote an environment where people and projects succeed.

Air Quality

Air permitting and compliance for stationary sources

The Merjent Air Quality Services team provides comprehensive air permitting, dispersion modeling, and compliance assistance.
As a Merjent client you’ll have access to a seasoned air quality engineer, dedicated to your facility, who can offer sound advice and provide knowledgeable suggestions to ensure compliance with federal and state air regulations, while keeping an eye on the horizon for new developments.
Our goal is to help you secure maximum operational flexibility.
  • Regulatory applicability assessments
  • Permitting strategy advice
  • Preliminary facility design guidance
  • New Source Performance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAP) guidance
  • Carbon life-cycle analyses
  • Air construction permitting
    • Federal new source review/prevention of deterioration (NSR/PSD)
    • state synthetic minor and natural minor source permitting
  • Air operating permitting
    • Federal major (Clean Air Act Title V)
    • State minor/synthetic minor
    • Registration permits
    • Permits by rule
  • State/local air permitting exemption determinations
  • Control technology analyses, including best available control technology (BACT), lowest achievable emission rate (LAER), and state/area-specific technology analyses
  • Air dispersion modeling analyses – class I and class II
  • Indirect source modeling
  • General conformity analysis
  • Viewshed analyses
  • Health risk assessments
  • Air toxics assessments
  • Odor modeling
  • Construction emissions calculations, including emissions modeling
  • Operating air emissions calculations
  • Emission calculations (construction and operation)
  • General conformity analyses
  • Noise calculations and analyses
  • Fugitive dust control plans
  • NSPS and NESHAP notifications
  • emission inventories
  • monitoring, recordkeeping, and reporting
  • source test management
  • compliance audits and assessments
  • risk management plan/process safety management (RMP/PSM) development assistance
  • RMP submittals
  • leak detection and repair (LDAR) assistance
  • enforcement support
  • voluntary disclosures
  • operation and maintenance plans
  • startup, shutdown, and maintenance plans
  • compliance assurance monitoring plans
  • toxic release inventories (TRIs)
  • greenhouse gas emission inventories
  • training

Our Pipeline sector pipeline service offerings are summarized below:

  • planning & feasibility
  • permitting
  • public outreach and tribal engagement
  • National Environmental Policy Act (NEPA) environmental review
    • third-party EIS/EA
    • applicant-prepared EA
  • field studies (biologicalwetland/waterbodyair quality, and cultural resources)
  • construction compliance
    • environmental inspection
    • independent environmental monitoring
    • construction stormwater
  • operational compliance
    • pipeline integrity programs and anomaly digs
    • U.S. Department of Transportation Class changes
    • pipe replacements
    • aboveground facility realignments
    • air quality compliance
    • closure/abandonment
  • merger & acquisition due diligence
  • expert testimony


Paul Mordorski
Air Quality Services