The Tucson International Airport Area Superfund Site is located in the Tucson Basin in Pima County, Arizona. As early as 1942, metals, chemicals and other wastes were disposed of in the region, which unfortunately led to aquifer contamination.
The Tucson Airport Remediation Project was established and a groundwater treatment system was commissioned, however, continued monitoring of the groundwater detected 1,4-dioxane, a contaminant not easily removed through the air-stripping treatment system used at the original treatment plant.
Pilot studies were conducted to evaluate UV-oxidation as a possible solution. Evaluation was based on three independent criteria: treatment capabilities, by-product formation and residual hydrogen peroxide quenching.