8669 Olive Boulevard
St. Louis, MO 63132
Professional Service Industries, Inc. (PSI) is a nationally recognized consulting engineering and testing firm providing integrated services in several disciplines, including geotechnical engineering, construction materials testing and engineering, facilities engineering and consulting, environmental consulting, asbestos management and industrial hygiene. PSI is a leader among the nation’s independent testing organizations and ranks among the largest consulting engineering firms in the country.
PSI has been providing business and industry with objective, accurate and useful information for over 130 years. Today, we employ approximately 2300 skilled personnel in offices nationwide.
PSI offers complete services in the following areas: environmental consulting, geotechnical engineering, construction materials testing and engineering, industrial hygiene services, facilities and roof consulting, nondestructive examination and testing, specialty engineering and testing services, mechanical testing. Support Services for: site selection, design, construction, property management
engineering and testing firm