2006 Annual Self-Monitoring Report - Eden Landing

This annual self-monitoring report summarizes the results of the water quality monitoring and sediment sampling conducted at the Baumberg Complex, also known as the Eden Landing Ecological Reserve (ELER), in Hayward, California, April through November 2006. Data was collected by the U.S. Geological Survey (USGS) on behalf of the Department of Fish and Game (Department) in accordance with the waste discharge requirements. Water quality monitoring was performed using continuous data recorders at the locations described in the Self-Monitoring Program outlined in the Final Order, except Pond B10. Since August 2004, B10 functioned as a muted tidal mudflat and residence time of intake water was limited to high tide cycles. In 2005, grab samples were collected in B10, but this data had limited usefulness and receiving water monitoring was discontinued, as requested by the Department and approved by the Regional Water Quality Control Board (RWQCB) in 2005. B10 operations were decommissioned in 2006 to accommodate construction activities, and the new water control structure will be completed such that ISP operations will resume in 2007. Water column sampling for metals was discontinued in 2006 since all levels were below Water Quality Objectives (WQOs), as approved by RWQCB staff in its letter to the Department, dated June 12, 2006. Analysis of the 2005/2006 sediment samples for metals were forwarded to the RWQCB staff under separate cover, since paired sampling seasons included data collected in the 2005/2006 winter season.