• PATRICK BAYOU, HARRIS County, TX

Stage of Clean-up: Remedial Assessment Not Begun

The Patrick Bayou site consists of contaminated sediments within the Bayou, a portion of the East Fork tributary, and associated wetlands. Patrick Bayou is one of several small bayous of the Houston Ship Channel (HSC) located within 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. For several years, Patrick Bayou has received an accumulation of permitted industrial wastewater discharges, municipal wastewater treatment plant effluent, and storm water runoff from adjacent industrial facilities and nearby urban/residential areas. These discharges are suspected to be the primary sources of the sediment contamination. The site is being proposed to the NPL because sediment contamination has been detected in the wetlands bordering the Bayou and poses a threat to downstream fisheries. Patrick Bayou is located in a mixed urban, highly industrialized petrochemical area in southeast Harris County approximately 1 mile north of the Deer Park, Texas, north of State Highway (SH) 225.  More...

Contaminants Detected
	Ground Water	Surface Water	Air	Soil	Other
ALDRIN		X
AROCLOR 1248		X
AROCLOR 1254		X
AROCLOR 1260		X
BENZENE		X
CADMIUM (CD)		X
CARBON DISULFIDE		X
CHLOROBENZENE		X
CHROMIUM		X
CHROMIUM COMPOUNDS		X
COPPER		X
COPPER COMPOUNDS		X
CYANIDES (SOLUBLE SALTS), NOS		X
CYCLOHEXANE		X
DICHLOROBENZENE, 1,3-		X
DICHLOROBENZENE, 1,4-		X
ENDOSULFAN		X
ENDRIN		X
ETHYLBENZENE		X
HEXACHLOROBENZENE		X
HEXACHLOROBUTADIENE (C46)		X
ISOPROPYLBENZENE		X
LEAD (PB)		X
MANGANESE		X
MANGANESE COMPOUNDS		X
MERCURY		X
METHYLCYCLOHEXANE		X
METHYLNAPHTHALENE, 2-		X
NICKEL		X
NICKEL COMPOUNDS		X
SILVER		X
SILVER COMPOUNDS		X
TOLUENE		X
VANADIUM		X
VANADIUM COMPOUNDS		X
XYLENE		X
ZINC		X
ZINC COMPOUNDS		X

EPA Hazard Ranking System scores for PATRICK BAYOU:

Less Hazard

National Average

More Hazard

0%					50%					100%

Overall site:

Surface water migration:

Rank Superfund sites in the U.S., TEXAS, or in HARRIS County by EPA Hazard Ranking Scores.

*Note: EPA's Hazard Ranking System is designed to screen and prioritize sites for the Superfund program, based on limited data available at time of listing. These scores are not based on a comprehensive risk assessment of the site and do not reflect conditions after initiation of cleanup work.

Number of PRPs currently associated with this site:

Unknown

EPA Site Information

• NPL Fact Sheet
• Agency for Toxic Substances and Disease Registry Public Health Assessment
• NPL Site 5 Year Reviews
• Comprehensive Environmental Response, Compensation, and Liability Information System (CERCLIS) Hazardous Waste Site Information
• Superfund Hazardous Waste Site Advanced Query Form

Scorecard reports for HARRIS County on:

• Potential Sources of Land Contamination
• Criteria Air Pollutants
• Hazardous Air Pollutants