Let The Best Prepare You For The Worst We are ERST/O'Brien's, the emergency response experts who bring the people, resources, and experience you need when disaster strikes. We provide many levels of service and support, from advising your facility response team to emergency response management. With offices on all three coasts of the United States and response team members throughout the ...

ENVIRONMENTAL MANAGEMENT ASSOCIATES Environmental Management Associates, Inc. Dedicated to providing clients with quality environmental management, impact assessment, and regulatory compliance solutions since 1985. Now Available: EMA's proprietary TRI Threshold Determination and Release Calculation Program for Metal Mining software has been updated for reporting year 2000 (see EMA News).