State and federal environmental laws and regulations require waste management facility owners and operators to meet certain financial assurance and liability requirements. Funds must be available to properly close the facility, monitor waste left in place after closure (post-closure period), clean up any waste releases and compensate for any damages. Someone must ultimately pay for these environmental costs. The financial assurance requirements place the costs on the facility owners and operators, rather than taxpayers. Learn more about the various financial assurance requirements and instruments used to ensure funds are available when needed.