PSI is a leading consulting, engineering and testing firm with more than 100 offices throughout the United States. Its services include environmental consulting, geotechnical engineering, construction testing, industrial hygiene and indoor air quality consulting, and facilities and roof consulting. Additionally, it provides compliance audits, air stripping, remediation design and implementation, asphalt testing, drilling services, groundwater monitoring, wood products certification and testing, and lead-based paint and asbestos management services. Its clients include various companies, commercial property owners, state and municipal governments, architects, engineers, contractors, developers and design firms. With locations in Orlando, Fla., PSI is headquartered in Oakbrook Terrace, Ill.
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