Stage of Clean-up: Remedial Assessment Not Begun
Conditions at Proposal (April 30, 2003): The Jones Road Ground Water Plume site is located approximately one-half mile north of the intersection of Jones Road and FM 1960 in a mixed residential, urban/light industry area outside the city limits of northwest Houston, Harris County, Texas. The site is being proposed to the NPL based upon the presence of hazardous substances, including cis-1,2-dichloroethene (DCE), tetrachloroethene (PCE), and tricholorethene (TCE), in drinking water wells. PCE has been detected in drinking water wells above EPA's Maximum Contaminant Level (MCL) of 5.0 ug/L.
During a routine sampling of public wells by the TCEQ Houston Region Office in December 2000, PCE, DCE, and chloromethane were detected in a public well supplying drinking water to approximately 18 employees, 90 children in childcare, and 150 to 200 students at a gymnasium. Subsequent samples collected on January 25 and May 2, 2001 confirmed the presence of PCE, DCE, and chloromethane in the public drinking water supply well.
During the Site Inspection in March and April of 2002, the Texas Commission on Environmental Quality (TCEQ) collected samples from 43 wells in Harris County and found concentrations of PCE at or above the MCL in 8 wells. Concentrations of PCE in ground water samples were as high as 128 ug/L. As a result, filtration systems have been placed on those 8 wells. More...