AN OVERVIEW OF CONTAMINANT-RELATED ISSUES IDENTIFIED BY MONITORING IN SAN FRANCISCO BAY

摘要

The San Francisco Estuary Regional Monitoring Program for Trace Substances(RMP0be- gan in 1993 and is sponsored by 74 local, state, and federal agencies and companies through their dis- charge or Bay use permits. The RMP monitors water, sediment, toxicity, and bivalve bioaccumulation at 25 sites in the Bay that are considered to represent "background" conditions. Several major envi- ronmental issues have been identified by the RMP. Polychlorinated biphenyls and mercury were often above water quality guidelines, and often occurred in fish tissues above U.S. Environmental Protec- tion Agency(U.S.EPA)screening values.