RMP Toxicity Workgroup: Sediment Stressor Identification Workshop I

This was the first of two workshops in support of the Causes of Sediment Toxicity project (2009-2010) to investigate toxicity identification and evaluation (TIE) methods related to laboratory sediment toxicity tests employing amphipods.  The goals of the workshops are to invite toxicologists and chemists to explore current TIE methods and issues related to stressor identification and to have the group exchange ideas and expertise that will help focus future research efforts on the most important chemicals and stressors of amphipod toxicity.

Dioxin Monitoring

San Francisco Bay was placed on the State of California’s 303(d) list of impaired waters in 1998 as a result of elevated concentrations of dioxins and furans (commonly referred to as ‘dioxin’) in fish. RMP studies of contaminants in Bay sport fish conducted every three years since 1994 have found that dioxin concentrations have remained unchanged over this time period and in some species, continue to greatly exceed screening values for human consumption. Our understanding of dioxin in the Bay is extremely limited, however, and improving this is a necessary first step in reducing concentrations in Bay fish and resultant health risks to fish-eating humans and wildlife.

Lindsey Slough Methylmercury Study

Solano Land Trust is undertaking a project in 2010 at the Calhoun Cut Ecological Reserve (CCER) to remove constructed levees. The wetland at CCER is currently open to tides, but flow is restricted to a ~3 foot diameter pipe. Removal of the levees will restore full tidal flow to Lindsey Slough within the CCER.

Assessment of Removal of Creosote-Treated Pilings and Structures from San Francisco Bay

The remnants of old creosote-treated piers and dilapidated maritime facilities are common sights along intertidal and subtidal shorelines. Removal of these structures has been proposed as a possible restoration focus for San Francisco Bay. Removal of dilapidated pilings could mitigate the adverse effects of other environmental threats and advance long-term goals for management and restoration of subtidal habitats in San Francisco Bay.

Central Valley Watershed Monitoring Directory

The Central Valley Watershed Monitoring Directory was built to promote and facilitate improved coordination of water monitoring across the basin and serves to: 1) Provide an up-to-date online directory for water quality monitoring programs in the Central Valley Basin; 2) Make it easier and less time consuming for regulatory agency staff and other monitoring groups and data users to find and track information about ongoing surface water monitoring activities in the basin; 3) Provide a low-maintenance, interactive online resource that can b

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