This training module:

• Cites the statutory and regulatory minimum technological requirements for land disposal units
• Summarizes the differences between interim status (part 265) and permitted (part 264) standards for land disposal units
• Defines "surface impoundment" and distinguishes surface impoundments from tanks
• Describes surface impoundment retrofitting and retrofitting variance procedures
• Explains the connection between land disposal unit standards, post-closure, and groundwater monitoring requirements

• RCRA Training Module: Introduction to Land Disposal Units (40 CFR Parts 264/265, Subparts K,L,M,N) (PDF)(16 pp, 179 K, September 2005, EPA 530-K-04-014)