Mesa De Oro Site Public Health Assessment

Timeframe: 1995 to 1997

The Mesa De Oro residential subdivision in Sutter Creek, California, is the site of the Central Eureka Mine. Investigations in the early 1990s revealed high concentrations of arsenic in mine tailings at the site. IAI, in collaboration with the California Department of Public Health and the Agency for Toxic Substances and Disease Registry, evaluated the urine and hair of concerned residents for arsenic exposure. The study sample of 66 individuals did not show elevated arsenic levels. IAI also examined cancer registry data for the area which did not indicate excess cancer.