Proposed plan for interim remedial measure at the 100-HR-3 Operable Unit

This Proposed Plan identifies the preferred alternative for an interim remedial measure at the 100-HR-3 Operable Unit, located at the Hanford Site. It also summarizes other alternatives evaluated for interim remedial measures in this operable unit. The intent of an interim remedial measure is to speed up actions to address contaminated areas that pose threats to human health or the environment. This Proposed Plan is intended to be a fact sheet for public review that briefly describes the remedial alternatives that have been analyzed, identifies the preferred alternative, and summarizes the information relied upon to recommend the preferred alternative. The preferred alternative presented in this Proposed Plan is to remove contaminated groundwater from the 100-HR-3 Operable Unit, treat it by ion exchange, and dispose of treated groundwater by using upgradient injection wells to return it to the aquifer