Phase I and II Environmental Site Assessment

Phase I Environmental Site Assessments, Salt Lake City Government
SAGE has prepared over 30 Phase I Environmental Site Assessments (ESAs) for the Salt Lake City Department of Airports (SLCDA), the Salt Lake City Corporation, and the Redevelopment Agency of Salt Lake City for properties in and around Salt Lake City and the SLCDA managed airports.   Phase I ESAs were prepared for a variety of property types including the historic Hansen Planetarium and Fisher Mansion, numerous properties within the International Center industrial park west of the Salt Lake International Airport, the American Barrel Superfund site, the Donut Falls/Cardiff Fork watershed area, and the Packaging Corporation of America industrial facility.  In addition to the Phase I ESAs conducted for the various Salt Lake City entities, SAGE personnel have conducted hundreds of Phase I ESAs for residential, commercial, industrial, mining, and agricultural properties and public lands throughout the western United States.

Phase II Environmental Site Assessment, Tucson, AZ
SAGE conducted a Phase II Environmental Site Assessment (ESA) to evaluate the suitability of a potential construction site near the Tucson International Airport in Tucson, AZ. The proposed site lies within the Tucson International Airport Area Superfund Site, which is contaminated due to the historic unregulated disposal of industrial chemicals. The Phase I ESA  identified the likely presence of ground water contaminated with volatile organic compounds as a Recognized Environmental Condition. For the Phase II Assessment, SAGE collected soil gas and surface soil samples to determine if the site was impacted by ground water contamination or by contaminated surface soil.

Although no contaminants were detected in surface soils, several volatile organic compounds were detected in soil gas samples above screening levels. Therefore, a risk evaluation was conducted to further evaluate potential exposures to soil gas for indoor and outdoor site workers as well as construction workers. Risks to future workers were initially evaluated by calculating site-specific screening levels, and then using EPA  Risk Assessment Guidance for Superfund [RAGS] protocols for potential pathways and contaminants that exceeded acceptable levels. Results of the risk evaluation indicated that both cancer and non-cancer risks to construction workers and future indoor and outdoor workers were within acceptable limits.