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Sources, Pathways and Loadings Workgroup of the Regional Monitoring Program

Title Description Type of Content
Bay RMP Sources, Pathways, and Loadings Workgroup Meeting (9am - 3pm) The Regional Monitoring Program for Water Quality in San Francisco Bay (RMP) is a collaboration… Event
Sampling the Storm: Tracking PCBs in Bay Area Waterways The Bay's industrial history is preserved in its mud. Buried in the soft, silty clay are legacy… News
Bay RMP Sources, Pathways, and Loadings Workgroup Meeting In person and via Zoom.  Event
Bay RMP Sources, Pathways, and Loadings Workgroup Meeting Agenda Package Agenda Package SPLWG 2025-04-28.pdf (59 pages, 6 MB file) Meeting Slides SPLWG 2025… Event
New Manuscript on Pollutants in the Guadalupe River Addresses Key Questions Guadalupe River is contaminated with mercury mining wastes from runoff associated with the historic… News
Bay-wide Watershed Dynamic Model The Watershed Dynamic Model, a hydrologic model for the Bay Area, can predict flow and sediment for… Focus Area
Stormwater Monitoring for PCBs and Mercury Since 2011, the RMP has collaborated with county stormwater programs to fund watershed… Focus Area
Sources, Pathways, & Loadings (RMP Workgroup) Since the 1990s, the RMP ran a field-intensive monitoring program to estimate loads of PCBs,… Focus Area
Sources, Pathways, and Loadings Workgroup (Day 2) Event
Sources, Pathways, and Loadings Workgroup (Day 1; Joint Meeting with ECWG) Event
Storms drive emerging contaminants into the Bay Rainfall washes contaminants from urban landscapes to San Francisco Bay, degrading water quality.… News
Sources, Pathways, and Loading Workgroup Meeting Day 2 Event
Sources, Pathways, and Loading Workgroup Meeting Day 1 Event
RMP Sources, Pathways and Loadings Workgroup Meeting Event
Vehicle Tires Threaten Water Quality Update: On October 1, 2023: California Department of Toxic Substance Control (DTSC) 6PPD… News
Bay RMP Sources, Pathways, and Loading Workgroup Meeting (Day 2) Event
Bay RMP Sources, Pathways, and Loading Workgroup Meeting (Day 1) Event
Dr. Kelly Moran Joins SFEI Staff SFEI is excited to announce that veteran RMP contributor Dr. Kelly Moran has recently… News
Toxic Tire Contaminant Found in Bay Area Stormwater Scientists at the San Francisco Estuary Institute (SFEI) have found a highly toxic tire-related… News
Bay RMP Sources, Pathways, and Loading Workgroup Meeting (Day 2) Event
2019 Bay RMP Sources, Pathways, & Loadings Workgroup Meeting Event
Sources Pathways and Loadings Annual Workgroup Meeting Event
RMP Sources Pathways and Loadings Workgroup Meeting Event
GreenPlan-IT featured in the newsletter of the National Water Quality Monitoring Council GreenPlan-IT, a toolset created in a collaboration with SFEP, US EPA, and local partners, has… News
Bay RMP Sources, Pathways, and Loadings Workgroup Meeting Event
RMP Sources, Pathways, and Loading Workgroup Meeting (May 29, 2014) The RMP Sources, Pathways, and Loading workgroup met on May 29, 2015 to review SPL activities… Event
Small Tributaries Loading Strategy The Small Tributaries Loading Strategy (STLS) is overseen by the Sources, Pathways, and… Project
Storm Flows Key to Managing Pollution in Highly Urban Watersheds Urban runoff is a large and potentially controllable source of pollutants for San Francisco Bay and… News

Publications

Title Abstract Year of Publication
Stormwater Contaminants of Emerging Concern (CECs) Monitoring Approach 2026
Integrated Watershed Modeling and Monitoring Framework to Support the Regional Monitoring Program The Regional Monitoring Program (RMP) is transitioning from a watershed program predominantly using monitoring data and data-driven load estimation methods to support management decisions on… 2025
Regional Watershed Spreadsheet Model (RWSM): 2024 The San Francisco Bay Regional Watershed Spreadsheet Model (RWSM) was developed within the Regional Monitoring Program for Water Quality in San Francisco Bay (RMP) to estimate average annual regional… 2025
RMP Sources, Pathways, and Loadings Strategy: 2024 Update The Sources, Pathways, and Loadings (SPL) Workgroup (WG) is one of the five active workgroups within the Regional Monitoring Program for Water Quality in San Francisco Bay (Bay; RMP). The Workgroup… 2024
Modeling Stormwater Loads of Contaminants of Emerging Concern: Literature Review and Recommendations 2024
Screening Bay Area Stormwater for Emerging Contaminants: Summary for Managers As part of a maturing science strategy, the Regional Monitoring Program for Water Quality in San Francisco Bay (RMP) focuses on monitoring and modeling of emerging contaminants in major pathways in… 2024
Storms mobilize organophosphate esters, bisphenols, PFASs, and vehicle-derived contaminants to San Francisco Bay watersheds In urban to peri-urban watersheds such as those surrounding San Francisco Bay, stormwater runoff is a major pathway by which contaminants enter aquatic ecosystems. We evaluated the occurrence of 154… 2024
Suspended Sediment Loads Analysis of Four Creeks in the San Francisco Bay Area 2023
San Francisco Bay Watershed Dynamic Model (WDM) Progress Report, Phase 2 The San Francisco Bay total maximum daily loads (TMDLs) call for a 50% reduction in mercury (Hg) loads by 2028 and a 90% reduction in PCBs loads by 2030. In support of these TMDLs, the Municipal… 2022
Strategy for In-Bay Fate Modeling to Support Contaminant and Sediment Management in San Francisco Bay This report presents a strategy and multi-year workplan for modeling polychlorinated biphenyls (PCBs), contaminants of emerging concern (CECs), and sediment in San Francisco Bay (the Bay). Robust in… 2022
Suspect Screening and Chemical Profile Analysis of Storm-Water Runoff Following 2017 Wildfires in Northern California The combustion of structures and household materials as well as firefighting during wildfires lead to releases of potentially hazardous chemicals directly into the landscape. Subsequent storm-water… 2022
Small Tributaries Pollutants of Concern Reconnaissance Monitoring: Application of Storm-event Loads and Yields-Based and Congener-Based PCB Site Prioritization Methodologies 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… 2022
Priority margin unit stormwater monitoring to support load estimates of PCBs into San Leandro Bay and the Emeryville Crescent 2022
San Francisco Bay Regional Watershed Modeling Progress Report, Phase 1 2021
Simulating Sediment Flux Through the Golden Gate. Prepared for Regional Monitoring Program for Water Quality in San Francisco Bay (RMP). 2021
Summary of Water Year 2017 precipitation, discharge, and sediment conditions at selected locations in Arroyo de la Laguna watershed, with a focus on Arroyo Mocho This report summarizes the precipitation, discharge, and sediment conditions observed from October 1, 2016 to September 30th, 2017 (Water Year (WY) 2017) in the Arroyo de la Laguna watershed, with a… 2020
Pollutants of Concern Reconnaissance Monitoring Progress Report, Water Years 2015 - 2019 Reconnaissance monitoring for water years 2015, 2016, 2017, 2018 and 2019 was completed with funding provided by the Regional Monitoring Program for Water Quality in San Francisco Bay (RMP). This… 2020
Small Tributaries Pollutants of Concern Reconnaissance Monitoring: Loads and Yields-based Prioritization Methodology Pilot Study 2019
Small Tributaries Pollutants of Concern Reconnaissance Monitoring: Pilot Evaluation of Source Areas Using PCB Congener Data 2019
Pollutants of Concern Reconnaissance Monitoring Progress Report, Water Years 2015-2018 2019
Optimal Selection and Placement of Green Infrastructure in Urban Watersheds for PCB Control San Francisco Bay and its watersheds are polluted by legacy polychlorinated biphenyls (PCBs), resulting in the establishment of a total maximum daily load (TDML) that requires a 90% PCB load… 2019
Prioritizing Candidate Green Infrastructure Sites within the City of Ukiah: A Demonstration of the Site Locator Tool of GreenPlan-IT. Report prepared for the City of Ukiah Department of Public Works under Supplemental Environmental Project # R1-018-0024 This report describes the application of GreenPlan-IT’s Site Locator Tool to identify and rank candidate GI installation sites within the City of Ukiah.  The Site Locator Tool is the… 2019
Regional Watershed Modeling and Trends Implementation Plan 2019
Guadalupe River Mercury Concentrations and Loads During the Large Rare January 2017 Storm 2018
Pollutants of Concern Reconnaissance Monitoring Water Years 2015, 2016, and 2017 2018
RMP Small Tributaries Loading Strategy: Modeling and Trends Strategy 2018 2018
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 2018
Long-term variation in concentrations and mass loads in a semi-arid watershed influenced by historic mercury mining and urban pollutant sources 2017
Pollutants of concern reconnaissance monitoring final progress report, water years 2015 and 2016 2017
Changing Channels: Regional Information for Developing Multi-benefit Flood Control Channels at the Bay Interface Over the past 200 years, many of the channels that drain to San Francisco Bay have been modified for land reclamation and flood management. The local agencies that oversee these channels are seeking… 2017
Regional Watershed Spreadsheet Model (RWSM): Year 6 Progress Report 2017
Demonstration of a Watershed Approach to Wetland Restoration Planning for Load Reductions: A Pilot Demonstration Project Using GreenPlan-IT in the Santa Rosa Plain, Sonoma County, California This summary memorandum presents technical recommendations to the 401 Certification and Waste Discharge Program (401 Program) of the State Water Resources Control Board (State Board) for a coherent,… 2017
Pollutants of Concern Monitoring: A low-intensity, budget conscious stormwater sampling method to identify highly polluted areas for potential management action 2017
Pollutants of concern (POC) reconnaissance monitoring final progress report, water year (WY) 2015 2016
Regional Watershed Spreadsheet Model (RWSM) Year 5 Progress Report 2016
Concentrations and loads of PCBs, dioxins, PAHs, PBDEs, OC pesticides and pyrethroids during storm and low flow conditions in a small urban semi-arid watershed Urban runoff has been identified in water quality policy documents for San Francisco Bay as a large and potentially controllable source of pollutants. In response, concentrations of suspended… 2015
Evaluation of Mercury and PCB Trends in San Francisco Bay Region Stormwater 2015
Concentrations and Loads of Mercury Species in the Guadalupe River, San Jose, California: Water Year 2010 2010
RMP Small Tributaries Loading Strategy 2009
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