The Patrick Bayou site is located in Deer Park, Texas. It consists of contaminated sediments in the Bayou, part of the East Fork tributary and associated wetlands. Patrick Bayou is one of several small bayous of the Houston Ship Channel (HSC) in the lower portion of the San Jacinto River Basin as it enters Galveston Bay in southeast Texas. Pesticides, polynuclear aromatic hydrocarbons (PAHs), metals and polychlorinated biphenyls (PCBs) have been detected in sediments in the Bayou since the early to mid-1990s. Patrick Bayou has received an accumulation of permitted industrial wastewater discharges, municipal wastewater treatment plant effluent and stormwater runoff from adjacent industrial facilities and nearby urban and residential areas. These discharges are suspected to be the primary sources of the sediment contamination. EPA placed the site on the Superfund program�s National Priorities List (NPL) because sediment contamination detected in the wetlands bordering the Bayou poses a threat to downstream fisheries. Site investigations and cleanup planning are ongoing.