Trinity Consultants is an international EHS consulting firm with an office in Des Moines. Trinity assists clients with air quality (air dispersion modeling; air quality permitting and compliance management; ambient/meteorological monitoring; emissions monitoring, reporting and testing management; LDAR support; and cap and trade support), water quality permitting and compliance, waste management support, engines/fuel support, noise and odor services, RMP/PSM support, and auditing & verification.