Trinity, Today

Since its founding in 1974, Trinity has expanded its geographic footprint and breadth of services. We attribute our continued growth to a focus on cornerstone values of top-notch technical performance and excellence in client service.

TCI office map

Broad Presence, Expert Service

  • Nearly 500 employees in the Trinity family of companies
  • 50 offices worldwide across the U.S. and in Canada, China, the Middle East, and the UK
  • Supporting 1,800 client sites annually
  • Provide EHS training to more than 2,000 professionals annually
  • Privately owned with more than 300 employee shareholders

Unmatched Air Quality Expertise

  • More than 300 PSD permitting projects in the past five years
  • Renowned air dispersion modeling expertise including photochemical modeling using CAMx
  • State and local agency planning services for the development of state air quality plans
  • More than 4,000 users of Trinity’s BREEZE® air dispersion modeling software

Group collaborating together

Specialized Consulting Services

  • Hazardous waste management/alternative fuels
  • Aquatic biology services
  • Mobil source/fuels support and engine certification
  • Process Safety Management (PSM) support
  • Toxicology and industrial hygiene services

Committed to Quality

  • ISO 9001:2008-based Quality Management System
  • Certified in our corporate headquarters
  • 95% satisfaction rating, as measured in our annual client survey

Effective Knowledge Management

  • Industry-leading, Sharepoint-based knowledge management system
  • Enables access to and rapid exchange of specialized knowledge among 500 consultants and national experts
  • Encompasses 40+ years of Clean Air Act determinations, interpretations, tools, templates, and training materials