Publication Summary

This progress report is one in a series describing the results of quarterly ground water sampling at Restover Truck Stop. This report describes the results of samples collected for benzene, toluene, ethylbenzene, and total xylenes (BTEX), as well as total petroleum hydrocarbons as gasoline (TPH-G), in February and April 1996. Ecology has conducted ground water sampling at this site from 1987 to the present.

This progress report is one in a series describing the results of quarterly ground water sampling at Restover Truck Stop. This report describes the results of samples collected for benzene, toluene, ethylbenzene, and total xylenes (BTEX), as well as total petroleum hydrocarbons as gasoline (TPH-G), in February and April 1996. Ecology has conducted ground water sampling at this site from 1987 to the present.

To remediate soil and ground water contamination, a vapor extraction system (VES) was constructed in the summer of 1993. The VES operated steadily from February 1994 to June 1995. Since June 1995 the VES has been shut down to convert the system from carbon adsorption to biofiltration.

Since monitoring began in 1987, BTEX concentrations have decreased substantially. Well WDOE-6A is the only well in which BTEX concentrations continue to be elevated. BTEX has not been detected in MW-8A since November 1994. In February, Model Toxic Control Act (MTCA) cleanup levels were exceeded in WDOE-6A for benzene, total xylene and TPH. In April, cleanup levels were exceeded for ethylbenzene and total xylene in WDOE-6A, as well as for TPH in WDOE-6A and MW-30. Benzene and toluene were not detected in well WDOE-6A in April due to high quantitation limits.

Link to EIM data for User Study ID RESTOVER