This report presents the results of the preliminary assessment (PA) conducted by Argonne National Laboratory at the Texas Army National Guard property in Bastrop County, Texas. Preliminary assessments of federal facilities are being conducted to compile the information necessary for completing preremedial activities and to provide a basis for establishing corrective actions in response to releases of hazardous substances. The principal objective of the PA is to characterize the site accurately and determine the need for further action by examining site activities, quantities of hazardous substances present, and potential pathways by which contamination could affect public health and the environment. This PA satisfies, for the Camp Swift property, the requirement of the Department of Defense Installation Restoration Program (IRP). The review of both historical and current practices at the property indicated that the activities at Camp Swift include no operations considered to have an adverse impact to the environment. The recommendation, therefore, is that no further IRP action is necessary at this property.

An Enhanced Preliminary Assessment was conducted at the Bennett Army National Guard Facility (Bennett ANGF), which is planned for inclusion in the Base Closure Program. Bennett ANGF is a 242-acre facility located approximately 20 miles east of Denver, Colorado, in a rural section of Arapahoe County. Bennett ANGF is located in what was the southeastern corner of the old Lowry Air Force Bombing Range. During the early 1960's, the property was the site of an operational underground Titan ICBM complex. Since 1975 the surface of the property has been used for field exercises by units in the Colorado Army National Guard (CoARGN). No environmentally significant operations (ESOs) that would require immediate action were observed during the site visit on 17 October 1989 or during the follow-up interviews. Soil samples are recommended for the five above ground ESOs: the Sewage Stabilization Pond and Runoff Trench, Chemical Waste Clarifier, Ordnance, and Potential Waste Disposal Areas. Four monitoring wells are recommended near the perimeter of the facility. The objective of the soil samples and the monitoring wells is to detect possible contamination from past releases. Since the underground Titan ICBM complex could not be entered, specific sampling recommendations are not possible. The next stage of activity should be a thorough visual inspection of the entire complex.

In December 1988, the Defense Secretary's Commission on Base Realignment and Closure released a report which recommended the Bennett Army National Guard Facility (BANGF) for closure. In March 1989, the U.S. Army Toxic and Hazardous Materials Agency (USATHAMA), since renamed the U.S. Army Environmental Center (USAEC), was assigned the responsibility for centrally managing the Base Realignment and Closure Environmental Restoration Program. As part of this program, sample design plans were prepared by R.L. Stollar & Associates (1991) to support the performance of a Remedial Investigation and Feasibility Study (RI1FS) at BANGF. Subsequent to the initial preparation of the plans, funding was suspended, and the actual RI/FS field work was not conducted. In September 1993, BANGF was selected for inclusion on the Federal Agency Hazardous Waste Compliance Docket. EPA policy requires a preliminary assessment (PA) and, if warranted, a site inspection (SI) be submitted within 18 months of being listed on the docket. This Sampling and Analysis Plan has been prepared to support an SI to meet this requirement.

Site Investigation Report for sites suspected to contain hazardous waste contamination. The report describes the site and the testing performed. The results are analyzed and conclusions stated as to the extent of contamination. Future work is proposed according to the data collected. The study was conducted under the Air National Guard's Installation Restoration Program.

"The purpose of the proposed action is to construct a range facility in order to provide the NHARNG units the opportunity to fulfill their marksmanship requirements as identified in the Department of the Army pamphlet 350-38 in Standards Training Commission dated 18 November 2013, without the need for travel to installations located outside the state of New Hampshire." --SP-ii.