Waste is regulated at the federal and state levels. In general, state regulations supersede federal regulations in that they may be more stringent. The following resources provide state-based information about solid waste disposal.
State-based EPA Resources
Environmental Compliance Assistance Platform (EnvCAP) – this is a "clearing house" of industry-specific resources to help members of those industries comply with regulations.
Veterinary Compliance Assistance (VetCA) – a subsection of EnvCAP with resources relevant to veterinary practices