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Filters: First Letter Of Title is S and Author is Alicia N. Gilbreath [Clear All Filters]
San Francisco State University Site 1 Vegetated Infiltration Basin (Case Study Site and Technical Reports). SFEI Contribution No. 794.2014.
San Francisco State University Site 3 Basin and Swale System (Case Study Site and Technical Reports). SFEI Contribution No. 795.2014.
A Sediment Budget for Two Reaches of Alameda Creek. SFEI Contribution No. 550. San Francisco Estuary Institute.2008.
Sediment Supply, deposition, and transport in the Flood Control Facilities of Arroyo Mocho and Arroyo Las Positas from 2006-2014. . SFEI Contribution No. 771. San Francisco Estuary Institue: Richmond, CA.2015.
Small Tributaries Pollutants of Concern Reconnaissance Monitoring: Application of Storm-event Loads and Yields-Based and Congener-Based PCB Site Prioritization Methodologies. SFEI Contribution No. 1067.2022.
Stormwater agencies in the San Francisco Bay Area are identifying watershed areas that are polluted with PCBs in order to prioritize management efforts to reduce impairment in the Bay caused by PCBs carried in stormwater. Water sampling during storms has been used to characterize PCB concentrations but management prioritization based on the comparison of concentrations between watersheds is made difficult due to variations in flow and sediment erosion between storms and in relation to varying land use. In addition, identifying PCB source areas within priority watersheds has proven complex and costly. To address these challenges, the San Francisco Bay Regional Monitoring Program (RMP) has developed two new interpretive methods based on storm-event PCB yields (PCBs mass per unit area per unit time) and fingerprints of Aroclors (commercial PCB mixtures) that make existing data more useful for decision-making.
The objectives of this study were to:
- Apply the yield method to the regional stormwater dataset and provide new rankings,
- Estimate the presence of Aroclors in samples where congener data are available
- Evaluate data weaknesses and recommend watersheds to resample, and
- Classify watersheds into high, medium, and low categories for potential management.
Small Tributaries Pollutants of Concern Reconnaissance Monitoring: Pilot Evaluation of Source Areas Using PCB Congener Data. SFEI Contribution No. 956. San Francisco Estuary Institute: Richmond, CA.2019.
Small Tributaries Pollutants of Concern Reconnaissance Monitoring: Loads and Yields-based Prioritization Methodology Pilot Study. SFEI Contribution No. 817. San Francisco Estuary Institute: Richmond, CA.2019.
Sources, Pathways and Loadings: Multi-Year Synthesis with a Focus on PCBs and Hg. SFEI Contribution No. 773.2016.
Spatiotemporal variation of turbidity in Alameda Creek and selected tributaries: August thru December 2007. SFEI Contribution No. 547. San Francisco Estuary Institute.2008.
Statistical Methods Development and Sampling Design Optimization to Support Trends Analysis for Loads of Polychlorinated Biphenyls from the Guadalupe River in San Jose, California, USA. SFEI Contribution No. 876. Applied Marine Sciences: Livermore, CA.2018.
Stream Inventory Report for La Honda Creek: Prepared for the Midpeninsula Regional Open Space District. SFEI Contribution No. 529. San Francisco Estuary Institute.2007.
Summary of Current Water Quality Monitoring Programs in the Delta. San Francisco Estuary Institute: Oakland, CA.2009.
Sunset Circle Vegetated Swale and Infiltration System (Case Study Site and Technical Reports). SFEI Contribution No. 796.2014.
Suspended Sediment Loads Analysis of Four Creeks in the San Francisco Bay Area. SFEI Contribution No. 1134. San Francisco Estuary Institute: Richmond, CA.2023.
A Synthesis of Microplastic Sources and Pathways to Urban Runoff. SFEI Contribution No. 1049. San Francisco Estuary Institute: Richmond, CA.2021.
California Senate Bill 1263 (2018) tasks the Ocean Protection Council (OPC) with leading statewide efforts to address microplastic pollution, and requires the OPC to adopt and implement a Statewide Microplastics Strategy related to microplastic materials that pose an emerging concern for ocean health. Key questions remain about the sources and pathways of microplastics, particularly to urban runoff, to inform an effective statewide microplastics management strategy. The OPC funded this work to inform these microplastics efforts. The purpose of this project was to build conceptual models that synthesize and integrate our current understanding of microplastic sources and pathways to urban runoff in order to provide future research priorities that will inform how best to mitigate microplastic pollution. Specifically, we developed conceptual models for cigarette butts and associated cellulose acetate fibers (Section 2), fibers other than cellulose acetate (Section 3), single-use plastic foodware and related microplastics (Section 4), and tire particles (Section 5), which were prioritized based on findings from the recent urban stormwater monitoring of microplastics in the San Francisco Bay region. Conceptual models specific to each of these particle types are valuable tools to refine source identification and elucidate potential source-specific data gaps and management options.