SDE Feature Class
CA, Santa Monica, environment, PAH, California, OSPR, San Diego, Polycyclic Aromatic Hydrocarbon, Humbolt, Humbolt Bay
These data are being collected for the purpose of being prepared for oil spills and assessing natural resource injuries. Concentrations of PAHs in water, sediment, and tissue (i.e., mussels, oysters) are proposed in areas along the California coast subject to potential spills by Chevron refining and transport activities.
Polycyclic aromatic hydrocarbons (PAHs) are a class of organic compounds found in the environment and associated with natural and anthropogenic activities, including the refinement and use of petroleum hydrocarbons as fuels and lubricants. When an oil spill occurs along the California coastline, an understanding of ambient or background levels of polycyclic aromatic hydrocarbons (PAHs) in nearshore areas is crucial for establishing baseline conditions before a release occurs. Anthropogenic (e.g., vehicle and boat exhaust, wood burning, industrial activities, oil spills) and natural releases (i.e., forest fires, oil seeps) of PAHs are common sources of these compounds in the environment. Chevron, its affiliate companies, and the natural resource Trustees (Department of Fish and Game, U.S. Fish and Wildlife Service, Bureau of Land Management, National Oceanic and Atmospheric Administration) have partnered and developed plans to collect PAH monitoring data in California for the purpose of being prepared for oil spills and assessing natural resource injuries. Monitoring of specific PAHs associated with oil spills in surface water, sediment, and tissue (i.e., mussels, oysters) are proposed in areas along the California coast subject to potential spills by Chevron refining and transport activities. Beginning November 2011, Chevron and the Trustees collected samples from Humboldt Bay in northern California for PAH analysis to begin assessing ambient conditions near Chevron's Light Products Eureka Terminal facility. Future sampling locations, including shorelines near Chevron facilities in El Segundo, Oceanside, and Richmond are targeted for PAH monitoring and those data will be consolidated with the initial Humboldt Bay dataset. Chevron and the Trustees have the common understanding that the interpretation of statistical comparisons of these data to spill data (in the event one occurs) must take into consideration the sample size and geographic coverage of the available PAH monitoring data.
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