NEW YORK–(BUSINESS WIRE)–Blackstone (NYSE: BX) announced today that funds affiliated with Blackstone Energy Transition Partners and other Blackstone funds (“Blackstone”) have acquired Alliance Technical Group (“ATG”), a leading provider of environmental testing, monitoring, and compliance services. Founded in 2000 and headquartered in Alabama, ATG has grown into one of the largest full-service environmental compliance providers in North America, with more than 2,200 employees located in 60-pl