Health Assessment for Petro-Chemical Systems, Inc. National Priorities List (NPL) Site, Shiloh, Liberty County, Texas, Region 6. CERCLIS No. TXD980873350

摘要

The Petro-Chemical Systems, Inc. site, Liberty County, Texas has been placed on the National Priorities List. The site consists of a 296-acre tract of land and Frontier Park Road which is 12,000 feet long. Portions of the property had been used for storage and disposal of industrial wastes. The locations and types of waste materials are not fully known at this time. Waste oils were stored in several pits. Monitoring data show that soils on the road alignment had elevated concentrations of benzene, benzene derivatives, and polycyclic aromatic hydrocarbons (PAHs). Benzene and naphthalene (a low molecular weight PAH) were the most prevalent contaminants detected. The first 1800 feet of the road appear to be the most heavily contaminated. Benzene and naphthalene concentrations within the near surface soils in the area were generally between 100 and 1,000 ppm. The paved portion of the road does not appear to be of public health concern because the remediation should have reduced the potential for human exposure to significant levels of hazardous substances. Even though the unpaved road section at the site has received a soil cover, the section may be of potential public health concern because of the risk to human health resulting from possible exposure to hazardous substances in soil, water, and sediment in wheel ruts or drainages via ingestion, dermal contact, and inhalation. Inhalation of VOCs also is a possible health concern.