Buckley Air Force Base encompasses approximately 3,328 acres.The base opened in 1942 as a training facility for B-17 and B-24 bombardier and armorer training. During World War II, Buckley was an auxiliary field for Lowry Air Force Base and in 1946 was transferred to the Colorado Air National Guard. In 1947, the US Navy took over and renamed the facility as the Naval Air Station Denver, Colorado. The Navy decommissioned the Air Station in 1959 and the US Air Force took over responsibility for the property. In 1960, the Air Force licensed the property to the State and the installation became Buckley Air National Guard Base.

Air Force Space Command took over the base in 2000, converting it to an Air Force Base and the mission now includes space-based military communications, missile tracking and services for transient military aircraft.

Phase I and Phase II Comprehensive Site Evaluation (CSE) activities were performed at Buckley AFB from 2005 - 2008. To date, a total of 17 MRAs have been investigated during the CSE process. Eight of these received a no further action (NFA) decision at the conclusion of the CSE Phase I. The nine remaining MRAs were evaluated during the CSE Phase II. At the conclusion of the CSE Phase II,these MRAs were divided into 15 munitions response sites (MRSs), all but one of which (TS102) was recommended for further evaluation.

In 2009, an Engineering Evaluation/Cost Analysis for the 14 MRSs was finalized with up to four alternatives evaluated for each MRS.