Publication Summary

Groundwater samples were collected from 15 monitoring wells and five private wells in February and July 1999 at the Hamilton/Labree Roads PCE site. The purpose of this sampling was to evaluate the extent and concentrations of perchloroethylene (PCE) contamination in groundwater surrounding the site. PCE was detected in all but one of the wells tested.

Groundwater samples were collected from 15 monitoring wells and five private wells in February and July 1999 at the Hamilton/Labree Roads PCE site. The purpose of this sampling was to evaluate the extent and concentrations of perchloroethylene (PCE) contamination in groundwater surrounding the site. PCE was detected in all but one of the wells tested.

The highest PCE levels (3,000 to 36,000 ug/L) were measured in the seven new monitoring wells installed along Hamilton Road in the spring of 1999. These wells were installed to confirm the presence of PCE in this area, after an investigation in 1998 using temporary borings detected extremely high PCE concentrations.

Concentrations in most of the remaining wells (monitoring and private) ranged from 100 ug/L to 400 ug/L. PCE concentrations in 12 of the monitoring wells and the five private wells exceeded the Model Toxic Control Act Method A cleanup standard for PCE in groundwater of 5 ug/L, as well as the EPA Maximum Contaminant Level of 5 ug/L for PCE in drinking water for adults.

Additional private wells, about one-half mile downgradient of the site, were also sampled in the winter of 1999. PCE was detected near the quantitation limit (1 ug/L) in two of the wells.

Link to EIM data for User Study ID HAMILTON