Division of Enforcement and Compliance Assistance (DECA) DECA plans and implements a comprehensive, multi-media enforcement and compliance program for the region. The division ensures compliance with the full range of environmental statutes and regulations for the air, surface water, drinking water, ground water, solid and hazardous waste, UST/LUST, and pesticides and toxic substances programs. Integrated enforcement planning with coordination of other divisions allows the region to respond comprehensively to facilities that are in violation of more than one federal statute. DECA also provides an enhanced focus on compliance assistance, supporting this Administration's efforts in the area of regulatory reform.