Founded in March 1989, KM Chng Environmental Inc. (KM Chng) is a nationally recognized expert in the areas of air quality, noise and vibration analyses and monitoring for transportation and infrastructure development projects.  We provide our services to both the public and private sectors.

KM Chng is certified as a Small Disadvantaged Business with various state agencies throughout the country.  In addition KM Chng is pre-qualified in the areas of Air Quality and Noise with several states including Massachusetts, Connecticut, New York, New Jersey, Maryland, Virginia, Georgia, Ohio, Illinois, Indiana, Michigan, Pennsylvania and Florida.