Publication Summary

This progress report is one in a series describing the results of 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 July 1998. 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 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 July 1998. Ecology has conducted ground water sampling at this site from 1987 to the present.

To remediate soil and ground water contamination, an Interim Action consisting of an air sparge/vapor extraction system (VES) was initiated in the summer of 1993. Operation of the VES was terminated in the fall of 1997, since BTEX concentrations had substantially decreased and continued operation of the system was no longer cost efficient.

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. In February and July, Model Toxic Control Act (MTCA) cleanup levels were exceeded in WDOE-6A for benzene and total xylene, as well as for TPH. Cleanup levels were also exceeded for ethylbenzene in February. Data review and laboratory reporting sheets are presented in Appendix A.

Link to EIM data for User Study ID RESTOVER