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Contact Region 9

Pacific Southwest, Region 9

Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations

Naturally Occurring Asbestos

The State of California's Involvement

In addition to contributing expertise and perspective to U.S. EPA's work in El Dorado Hills, Cal/EPA has conducted its own work on asbestos in El Dorado and other counties in California.

Starting in 1999, Cal/EPA studied potential asbestos exposures in the Garden Valley area. The Garden Valley study evaluated quarries and unpaved roads as potential airborne asbestos sources. The study concluded that use of asbestos-containing rock to surface unpaved roads is the largest source of airborne asbestos exposures in the area. At the present time, OEHHA and DTSC are completing an assessment of risks from roads in the Garden Valley area surfaced with asbestos-containing rock.

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