This Final Remedial Investigation/Feasibility Study describes the work performed; explains project objectives; and presents data collected during project activities, results, and conclusions for the Installation Restoration Program at Tin City Long Range Radar Station, Alaska. The report describes the risks posed by the site and gives the basis for selecting remedies to mitigate the risks.

The Final RI/FS report addendum is provided under Contract No. F41624-94-D-8046-0004, between the U.S. Air Force Jacobs Engineering Group Inc. The purpose of this report is to describe field activities conducted in August 1995, evaluate analytical results from the sampling activities, and describe changes in conclusions or recommendations to the final RI/FS submitted in October 1995. The IRP source areas that were investigated are as follows: SS02, OT08, SS09, SS10, and SS11. These areas required additional characterization to complete the requirements of the RI/FS. The general objective was to characterize contaminant extent and concentrations at the five source areas listed above.

This Work Plan describes the work to be performed, explains project objectives, and presents rationale for conducting specific project activities for the Installation Restoration Program at Kotzebue Long Range Radar Station, Alaska. (MM).

The purpose of the Remedial Investigation/Feasibility Study Report is to provide a comprehensive description of Kotzebue LRRS, including the installation's operational history and environmental setting; a summary of past IRP investigations at the site; a detailed description of the 1994 remedial investigation; a site conceptual model integrating available site information; and site-specific summaries and recommendations. This document also incorporates a feasibility study which identifies cleanup objectives, evaluates various remedial action alternatives, and recommends appropriate actions to meet cleanup objectives.