These restrictions were mandated by the 1984 HSWA amendments to RCRA. They prohibit the disposal of hazardous wastes into or on the land unless the waste meets treatability standards of lower toxicity.
LAND DISPOSAL RESTRICTIONS (LDR)
Meaning of LAND DISPOSAL RESTRICTIONS (LDR) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012