Results of RMP monitoring of loads from the Delta to San Francisco Bay were recently published in the journal Water Environment Research. The article follows up on a paper published in 2009 in Environmental Toxicology and Chemistry describing mercury concentrations and loads from this large river system to the Bay. This new article presents estimates for PCBs for a 6-year monitoring period and estimates for PAHs, PBDEs, dioxins and furans, the organochlorine pesticides DDT, chlordane, dieldrin, and selenium for shorter periods. The average contaminant loads described in this study were close to or below existing regulatory load allocations established for North San Francisco Bay.
A SFEI technical report on this study is also available.