Andersen Environmental (AE) is a full service consulting firm that is comprised of leading environmental professionals dedicated to providing effective solutions for our clientsâ environmental needs. Andersen offers a broad portfolio of environmental services, some of which include: asbestos and lead testing, mold remediation, Phase 1 and Phase 2 site assessments, and Catastrophe Response. Andersen Environmentalâs corporate headquarters are located in Los Angeles, California, with offices throughout the United States.