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Polycyclic aromatic hydrocarbons (PAHs) are reported for water samples collected from the San Lorenzo River water during the rainy seasons from 2015 to 2016. Samples were collected during 2-, 5- and close to 10 year flood events.

This dataset contains concentrations of polycyclic aromatic hydrocarbon compounds sampled using semipermeable membrane device (SPMD) blank samples.

This data set documents results of analysis of samples collected from the Arctic National Wildlife Refuge during Summer 2019. Data tables include: 1. The numeric and alphanumeric identifiers for samples collected for this study and the dates these samples were collected; 2. Results data containing concentration values of individual polycyclic aromatic hydrocarbon compounds in sediment, soil, and vegetation samples; 3. Results data containing concentration values of individual PAH compounds in water samples; 4. Results data containing concentration values of individual polycyclic aromatic hydrocarbon compounds in quality-control sample blanks for all four sample matrices (sediment, soil, vegetation, water); 5. Results data containing mass values of individual polycyclic aromatic hydrocarbon compounds detected in quality-control procedural spiked and purified water spiked samples that were spiked with mixture of polycyclic aromatic hydrocarbon compounds; 6. Results data containing concentration values of individual polycyclic aromatic hydrocarbon compounds in sediment, soil, and vegetation samples subsampled in triplicate; 7. Results data containing percent recovery values of deuterated polycyclic aromatic hydrocarbon surrogate compounds spiked into all processed samples at the beginning of the sample preparation procedure as a measure to determine recovery of targeted polycyclic aromatic hydrocarbon compounds subjected to the sample preparation procedure

This dataset contains estimated time-weighted average water concentrations of polycyclic aromatic hydrocarbon (PAH) compounds sampled using semipermeable membrane device (SPMD) samplers.

Sediment grain-size distributions, stable carbon isotope ratios (d13C), total carbon to total nitrogen ratios (C:N), short-lived radionuclides (Beryllium-7, Cesium-137, and Lead-210), concentrations of 76 parent and alkylated polycyclic aromatic hydrocarbons (PAHs) and concentrations of 33 per- and polyfluoroalkyl substances (PFAS) were measured in the northern reach of San Francisco Bay (San Pablo and Suisun Bays), and in stream beds of the lower reaches of Napa River and Sonoma Creek, 5 months and 20 months after the 2017 Atlas and Nuns wildfires. New sites for sediment geochemistry analyses added 20 months post-fire included the lower reaches of Petaluma Creek and Suisun Slough, and in marsh sediment on Napa River and Sonoma Creek.

This data package contains measurements of polycyclic aromatic hydrocarbons (PAHs) in muscle tissue of several fish species including Red Snapper and Yellowedge Grouper collected aboard R/V Justo Sierra and R/V Weatherbird II cruises in the southern Gulf of Mexico from 2010-06-05 to 2016-08-19. Fish species were caught in Campeche Bay and Yucatan Shelf in the Southwestern Gulf of Mexico using demersal longline sampling gear. The total concentration of PAHs in muscle tissue was analyzed with an Agilent gas chromatograph-mass spectrometer (GC-MS) 6890N/5973MS after PAH was extracted from tissue with a 1:1. hexane:methylene chloride solvent. Livers of red snappers were examined for hepatic parenchymal changes. The dataset includes the cruise information, date and location of sample collection sites, the common and the scientific name of the fish species examined, total PAH concentration, and the classification and the exact description of the anomaly.

The dataset includes results from the analysis of sediments and solids collected from receptor sites receiving runoff from adjacent parking lots and other paved surfaces. Receptor sites include parking lot catch basins, retention ponds, drainage ditches, and storm-water discharge zones in streams and rivers. Samples were analyzed for percent moisture content and concentrations of 17 U.S. Environmental Protection Agency Priority Pollutant Polycyclic Aromatic Hydrocarbons (PAHs). Samples collected from parking lot sweepings (dust) also were analyzed for the same suite of 17 PAH compounds.