Former US Travel Systems
|Summary Date: April 2003||View detailed information from database on this site.|
|Status: Active||Database Name: US Travel Systems, Former|
|Location: 230 Old Steese Highway, Fairbanks, AK||Latitude/Longitude: See database entry|
| DEC Contaminated Sites Contact: Tamara Cardona-Marek, Project Manager - 907-451-2192
US Travel is located about one-half mile northeast of downtown Fairbanks. A gas station constructed in the early 1960s was formerly located on the property. The former UST arrays were removed in 1983 without an UST site assessment. Excluding a 550-gallon used-oil tank, the number, size, and period of operation of underground storage tanks (USTs) that were previously in operation at this site are unknown. Currently a travel agency is operating on-site.
Contamination was first identified in 1991 during an Alaska Department of Transportation & Public Facilities (ADOT) hazardous materials investigation for the proposed Old Steese Highway reconstruction right-of-way property acquisition study. In 1993, a release investigation was conducted. Soil and groundwater samples were collected and compared to Alaska Department of Environmental Conservation (DEC) cleanup levels. The results of the soil sampling indicated soil petroleum hydrocarbon contamination in excess of DEC cleanup levels. The results of the sampling indicated both soil and groundwater petroleum hydrocarbon contamination in excess of DEC cleanup levels.
In 1994, an air injection/ soil vapor extraction (AI/SVE) system was installed to treat site contaminants. Since 1994, groundwater has been sampled and analyzed semiannually for petroleum constituents in order to understand contaminant concentration trends. This facility continues to receive grant funds through the State of Alaska Financial Assistance Program to fund cleanup activities.
The contaminants of concern (COCs) are primarily petroleum; gasoline and gasoline components (BTEX). Petroleum contaminated soil remains on-site. Extensive impacts to groundwater have been identified both on and off-site.
This site continues to be treated by the AI/SVE system installed in 1995. The remediation system has decreased petroleum constituent concentrations; but the system appears to have reached its limit of effectiveness. Groundwater petroleum concentrations still exceed DEC cleanup levels. Alternative remedial approaches are being evaluated.