FAIRFAX, Va.--(BUSINESS WIRE)--SRA International, Inc. (NYSE: SRX), a leading provider of technology and strategic consulting services and solutions to government organizations and commercial clients, today announced that it has completed the acquisition of Perrin Quarles Associates (PQA), Inc., a privately held environmental consulting firm that specializes in environmental program development and implementation for air quality and climate change. Founded in 1979 and headquartered in Charlottes
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