The purpose of this document is to assist petitioners in submitting complete applications for either determination of equivalent treatment or a treatability variance (for process wastes only) with respect to hazardous waste land disposal restrictions. This document describes the two types of variances and discusses the situations to which they apply. It also discusses the required contents for each type of petition and provides an overview of EPA's petition review process.

• Variance Assistance Document: LDR Treatability Variances and Determinations of Equivalent Treatment (PDF)(18 pp, 37 K)