Health Assessment for Hewlett-Packard, Palo Alto, Palo Alto, Santa Clara County, California, Region 9. CERCLIS No. CAD009122532

摘要

The Hewlett-Packard, Palo Alto site is on the National Priorities List. The site is a gasoline station owned by the Hewlett-Packard Corporation which had five underground storage tanks. The environmental contamination (maximum concentrations reported) consists of trichloroethylene (520 ppb), benzene (110 ppb), xylenes (290 ppb), toluene (10 ppb), and chloroform (28 ppb) in groundwater; benzene (36 ppm), toluene (290 ppm), xylenes (540 ppm), ethylbenzene (100 ppm), and total petroleum hydrocarbons (1,700 ppm) in subsurface soil beneath the site. The site is considered to be of potential public health concern because of the risk to human health caused by the possibility of exposure to hazardous substances via contaminated groundwater. However, the potential appears to be minor at this time since there apparently are no groundwater wells in use in the vicinity of the plume.