- Objectives
Remediation of Petroleum Impacted Soil and Groundwater Associated with a Former Fueling Facility as required under State Regulations.
- Location
4004 South Park Ave.
- Status
Active Clean-up Site
- Type
Leaking Underground Storage Tank Project
- Annual Budget
approximately $95,000
- Contact
City of Tucson - Environmental Services 520-791-3175
- Description
The Thomas O. Price Service Center is a primary fueling facility for the City of Tucson, and has been in operation since 1972. The facility is located at the southwest corner of Ajo Way and Park Ave. (Thomas O. Price Service Center Site Map). Historically, the facility maintained 23 underground storage tanks (USTs) for gasoline and diesel. During the late 1980s, the UST system was found to have leaked an unknown amount of fuel into the soil below the fueling tanks, dispensers, and delivery piping. The tanks were emptied and removed from service in the early 1990’s. Gasoline had migrated to a clay layer 90 feet below the site (in the upper groundwater zone), and has since migrated to the north of Ajo Way and beneath Fire Station 10. Today the City operates two soil vapor extraction systems (SVE) to remove contamination from the soil, and also pumps the gasoline from the upper groundwater zone above the clay. Currently, the City monitors 67 shallow and lower groundwater monitoring and remediation wells annually to detect the gasoline and dissolved benzene in the upper groundwater zone and MTBE in both the upper and lower groundwater zones. Benzene exceeds the regulatory standard in the perched groundwater zone. All work is completed under the oversight of Arizona Department of Environmental Quality (ADEQ) Leaking Underground Storage Tank (LUST) Program accordance with the Corrective Action Plan Modification, dated February 11, 2002.
- Additional Info
Although groundwater contamination has been detected above state action levels, there are no Tucson Water drinking water wells nearby.
- Activities
Groundwater Monitoring, Soil Remediation
- Last Update
Wednesday Jun 8, 2022