The 6,700-acre Hill Air Force Base (Hill AFB) site is an active military facility situated between the cities of Ogden and Salt Lake City, covering portions of Davis and Weber Counties, Utah. The Record of Decision (ROD) addresses part of Operable Unit 2 (OU2), which consists of two unlined disposal trenches, seeps, and springs, and confined and unconfined aquifers. Federal investigations from 1983 to 1986 identified VOC contamination in onsite and offsite ground water. As a result of these investigations, Hill AFB began collection and treatment of contaminated ground water from seeps and springs in 1986. The ROD addresses the interim remediation of OU2 subsurface soil and ground water by removing a DNAPL source and thus preventing contaminants from reaching aquifers currently used as drinking water sources. The selected remedial action for the interim remedy includes installing and maintaining a source recovery system to remove DNAPL contamination from the subsurface; pumping DNAPL-contaminated ground water, with onsite discharge to a pretreatment facility to separate DNAPL from ground water using a steam stripper; temporarily storing the DNAPL onsite in steel tanks, followed by transporting the waste offsite for incineration.