Health Assessment for San Fernando Valley, San Fernando Valley, Los Angeles County, California, Region 9. CERCLIS Nos. 09CAD980894893, 09CAD980894901, 09CAD980894984, 09CAD980894976

摘要

A large portion of the groundwater in the San Fernando Groundwater Basin has been contaminated with volatile organic compounds (VOCs) at concentrations of public health concern. The study area encompasses approximately 190 square miles and currently has 4 designated National Priorities List Sites: North Hollywood, Crystal Springs, Pollock, and Verdugo. The primary contaminants in the study area are PCE and TCE, although other VOCs have been identified in the groundwater. The sources of the contamination are currently unidentified and therefore physical hazards such as open storage tanks, vessels, drums, pits, or general debris associated with the sources cannot be fully addressed. The sites are considered to be of public health concern because of the risk to human health caused by the likelihood of exposure to hazardous substances through the use of the contaminated groundwater and the potential for exposure at the contaminant source(s) through other exposure pathways.