Subject: Applicable or Relevant and Appropriate Requirements (ARARs)

08-1993 Transmittal of Guidance on conducting Non-Time-critical Removal Actions Under CERCLA

The purpose of this memorandum is to transmit new guidanceĀ  on the appropriate use of non-time-critical removal authority under Superfund and the development of Engineering Evaluation/Cost Analysis (EE/CA) reports and EE/CA Approval Memorandums. This guidance supersedes the March 30, 1988, outline from Timothy Fields, Jr. to the Superfund Branch chiefs on the EE/CA process.

TI waiver 198193

The purpose of this memo is to clarify the U.S. Environmental Protection Agency’s (EPA’s) internal consultation process for Superfund groundwater technical impracticability (Tl) Evaluations. It also provides recommendations on how to prepare technically sound Tl Evaluation documents when considering whether a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) groundwater cleanup site merits an applicable or relevant and appropriate requirement (ARAR) waiver.