Using cutting-edge analysis tools and techniques to maximize efficiency and help stretch each project dollar, Environmental Consulting & Technology, Inc. (ECT), offers a full range of air quality engineering, permitting, and support services for a client base that ranges from some of the nation’s largest manufacturers and electrical utilities to small local interests.

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Areas of Expertise

  • Federal New Source Review (NSR) permitting
  • State NSR permitting
  • Title V permitting
  • Emission inventories
  • Air dispersion modeling
  • Control technology evaluation
  • Compliance management
  • Risk management plan support
  • Offsite consequences analysis
  • Regulatory consultation & negotiation
  • Training
  • Expert Testimony


ECT’s air quality team is considered among the industry’s most knowledgeable experts. Our staff recognize the significance each project holds for the client. Project teams begin by reviewing the applicability of state and federal regulations to each affected source and use their experience to develop a compliance strategy with a comprehensive list of options, including the advantages/disadvantages of each. ECT engineers/scientists routinely determine emission rates and stack parameters, consider the applicability of new source review requirements, and perform Best Available Control Technology (BACT)/ Lowest Achievable Emission Rate (LAER)/ Reasonably Available Control Technology (RACT)/Maximum Achievable Control Technology (MACT) analyses. ECT engineers/scientists also engage in the performance of complex emissions netting analyses for a variety of pollutants, including greenhouse gases.


Whether it is an application for new emission sources or a modification to an existing source, ECT’s air quality team offers extensive experience in air quality analysis, regulatory review, and planning, and utilizes their advanced educational backgrounds and direct project experience of industrial processes to identify potential critical/fatal flaws in new or existing permitting strategies, and offer innovative, cost-efficient solutions and provide maximum operational flexibility.

Air Dispersion Modeling

ECT’s air dispersion modelers lead the way in helping clients realize the value of dispersion modeling as a planning tool to assess the project feasibility, to optimize emission sources for maximum flexibility and to mitigate operational risk. ECT’s air dispersion modeling experience includes many technically challenging scenarios involving Class I Areas, Class II Areas, Toxic Air Pollutants, Offshore emissions, fogging and icing, etc. As a result, ECT has experience with many modeling programs, including AERMOD and its suite of support programs, CALPUFF, the Offshore and coastal Dispersion (OCD) model, SACTI, etc.


ECT provides a complete range of air compliance services including the development of compliance systems to maintain continuous compliance with all permit conditions and any applicable federal and state requirements including monitoring, recordkeeping, and reporting requirements. ECT teams with each client and individual facility to develop a compliance system specific to that facility’s needs. ECT conducts air compliance reviews and audits, preparation of annual operating reports and statements of compliance, management of air compliance testing, and on-site training. ECT has developed a unique compliance system to achieve and maintain compliance with the reciprocating internal combustion engine (RICE) regulations.

Air Quality Services

  • Federal New Source Review (NSR) permitting (PSD & NNSR)
  • Title V permitting
  • State construction permitting
  • Minor source permitting
  • Control technology evaluations (RACT/BACT/LAER/ MACT)
  • Air Dispersion Modeling (Class I Areas, Class II Areas, Toxic Air Pollutants)
  • Greenhouse gases – Emission calculations & inventories
  • Emissions inventories & database services
  • Emission offsets/emission reduction credits
  • National Environmental Policy Act (NEPA) reviews/air quality analyses for Environmental Assessments & Environmental Impact Statements
  • Superfund Amendments & Reauthorization Act Title III reporting
  • 112(r) risk management planning
  • Owner/operator liaison for agency negotiations
  • Long-term permit maintenance
  • Strategic data management
  • Audit program development & comprehensive on-site audits
  • FERC resource report development