Waste Isolation Pilot Plant Land Withdrawal Amendment Act

[AI summary unavailable — showing source text] Waste Isolation Pilot Plant Land Withdrawal Amendment Act - Amends the Waste Isolation Pilot Plant Land Withdrawal Act (WIPP Act) to remove certain provisions relating to: (1) a test phase; (2) requirements for the commencement of disposal operations; and (3) disposal regulations. Requires periodic compliance review (currently, periodic compliance recertification) by the Administrator of the Environmental Protection Agency. Declares that the Secretary of Energy should determine whether engineered or natural barriers, or both, will be required. (Current law requires that the Secretary use both engineered and natural barriers and waste form modifications.) Exempts transuranic mixed waste designated for disposal at the Waste Isolation Pilot Plant (WIPP) project from the land disposal restrictions in specified Federal regulations. Removes certain provisions: (1) relating to determination of noncompliance during the disposal and decommissioning phases; and (2) declaring that the authorities provided to the Administrator and the State (under provisions relating to compliance with environmental laws and regulations) are in addition to the enforcement authorities available to the State und…