In 1988, EPA promulgated various certification and notification requirements under the Land Disposal Restrictions ("LDR") regulatory program ( 53 FR 31138, August 17, 1988). This rule included, in 40 CFR 268.7(b)(8), specific certification and notification requirements for recyclers using recyclable materials in a manner constituting disposal. This provision included a reference to 40 CFR 266.20(b), a separate provision that specifies regulatory requirements for certain use constituting disposal activities. However, at that time, the Agency failed to add a similar reference in 40 CFR 266.20(b) alerting recyclers to the LDR certification and notification requirements in 40 CFR 268.7(b)(8). The LDR certification and notification requirement for use constituting disposal was later renumbered from 40 CFR 268.7(b)(8) to 40 CFR 268.7(b)(6).