Rule Applicability Flow Chart
The El Dorado County Air Quality Management District (District) regulates Naturally Occurring Asbestos. However, the District has not been delegated the authority to regulate demolition or renovation of facilities that may contain asbestos containing building materials. The United States Environmental Protection Agency (EPA) are responsible to regulate Asbestos National Emission Standards for Hazardous Air Pollutants (NESHAP) requirements in El Dorado County. The asbestos NESHAP regulations specify work practices for asbestos to be followed during demolitions and renovations of all structures, installations, and buildings (excluding residential buildings that have four or fewer dwelling units). The regulations require the owner of the building or the operator to notify the EPA and the California Air Resources Board (CARB) before any demolition, or before any renovations of buildings that could contain a certain threshold amount of asbestos or asbestos-containing material.
Naturally Occurring Asbestos is prevalent in at least 44 of California's 58 counties. Asbestos is the name for a group of naturally occurring silicate minerals. Asbestos may be found in serpentine, other ultramafic and volcanic rock. Serpentine is the California State Rock. When rock containing NOA is broken or crushed, asbestos may become released and become airborne, causing a potential health hazard.
El Dorado County Air Quality Management rule 223-2 requires activities to reduce asbestos dust created from earth moving activities. An Asbestos Dust mitigation plan must be prepared, submitted, approved and implemented when more than 20 cubic yards of earth will be moved at all sites identified as being in an Asbestos Review Area as shown on the following map:
Naturally Occurring Asbestos Review Area Map, El Dorado County - 1/22/15
Rule 223-2 Fugitive Dust – Asbestos Hazard Mitigation
Asbestos Dust Mitigation Plan Application
(ATSDR)Health Consultation Evaluation of Community - Wide Asbestos Exposures Public Comment Release
"US Army Corps of Engineers Fault Evaluation Study which identifies the Mormon Island Fault through El Dorado County - Geologic and Seismologic Investigations of the Folsom, California Area by Tierra Engineering Consultants, Inc. (1983)."
USGS Open File Report 2006-1362 "Mineralogy and Morphology of Amphiboles Observed in Soils and Rocks in El Dorado Hills, California"US EPA Response to the November 2005 National Stone, Sand & Gravel Association Report“Evaluation of EPA’s Analytical Data from the El Dorado Hills Asbestos Evaluation Project” EDC Press Release: El Dorado County Reaction to DTSC Study of Serpentine Roads in Garden Valley - April 2005
Register a complaint
Agency for Toxic Substance & Disease Registry (ATSDR) - Asbestos Information
Air Resources Board (ARB) - Naturally Occurring Asbestos Publication & Maps
Department of Toxic Substance (DTSC) Garden Valley Discovery Project
Environmental Protection Agency (EPA)
Office of Environmental Health Hazard Assessment (OEHHA) - Asbestos Fact Sheet
Asbestos and Dust Protection Ordinance
US EPA NESHAP Notification Form: Asbestos NESHAP: Notification of Renovation or Demolition
More information can be found at:
US EPA Asbestos Information
Cal/OSHA Certified Asbestos Consultant List
Agency for Toxic Substance and Disease Registry (ATSDR) Provides Health Consultation