Parent and alkylated polycyclic aromatic hydrocarbons (PAHs) and per- and polyfluoroalkyl substances (PFAS) in north San Francisco Bay, Napa River, and Sonoma Creek in 2018 and 2019
Dates
Publication Date
2021-07-22
Start Date
2016-10-20
End Date
2019-08-12
Citation
Takesue, R.K., Conaway, C.H., and Tipple, B.J., 2021, Parent and alkylated polycyclic aromatic hydrocarbons (PAHs) and per- and polyfluoroalkyl substances (PFAS) in north San Francisco Bay, Napa River, and Sonoma Creek in 2018 and 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9B080YI.
Summary
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.
Summary
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.
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NorthSFBayPAHandPFAS2018and2019_metadata.xml Original FGDC Metadata
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242.82 KB
application/fgdc+xml
pic_NapaMarsh.jpg “Photo looking north at the Napa River marsh where sediment was collected in 2019”
3.5 MB
image/jpeg
NorthSFBayPAHandPFAS2018and2019.csv
155.46 KB
text/csv
Purpose
In October 2017, the Atlas and Nuns wildfires each burned over 20,000 hectares in the Napa River and Sonoma Creek watersheds in the north San Francisco Bay area of California. Contaminants in wildfire runoff can originate from anthropogenic activities, from geologic sources, or be created by fire itself, such as polycyclic aromatic hydrocarbons (PAHs). A linked terrestrial and marine sediment geochemical study was undertaken in Napa River and Sonoma Creek watersheds and in receiving waters of San Francisco Bay to explore sources and dispersal of sediment and contaminants in runoff from the Atlas and Nuns wildfires, and their potential impacts on downstream ecosystems.
Preview Image
Photo looking north at the Napa River marsh where sediment was collected in 2019