The purpose of this sub study (part of a larger research project on salvaged asphalt) was to investigate the potential for soil and/or groundwater and/or surface water contamination arising from the stockpiling, use, or disposal of salvaged asphalt pavement in Montana. The investigation was keyed to the four asphalt sources generally used in Montana highway pavements, those sources being the four Montana oil refineries. Asphalt from each refinery exhibits unique molecular and chemical attributes. Road surface contamination resulting from vehicular road use was recognized as a factor impacting this study, but was not researched. Asphalt paving materials (actually, core samples from newly placed bituminous pavements) representing each of the four refinery sources were analyzed using widely accepted test methods. These included the Environmental Protection Agency (EPA) Toxic Characteristics Leachability Procedure (TCLP) and related tests to determine the presence and/or amount of volatile and semi volatile organic compounds, polynuclear aromatics (PNAs) and certain metals. Test results are included. In summary, no substances tested for in these test groups were observed to be above the stated minimum threshold values in any of the four representative samples. The potential of soil or water contamination arising from the use, storage, or disposal of any of the typical Montana asphalt paving mixtures appears to be minimal.