Natural asbestos mapped

The Division of Geological & Geophysical Surveys has released maps depicting the likelihood of naturally occurring asbestos in bedrock in Alaska. Areas of potential and known occurrences are shown on 21 maps that cover the state, with a color-coded scale that ranges from high-to-known through zero-to-low potential. The maps were funded by the Alaska Department of Transportation & Public Facilities, which authorizes site-specific plans to provide immunity to landowners and contractors using gravel or aggregate material containing naturally occurring asbestos.

The new maps are meant to be a guide. However, determining the presence and amount of asbestos requires careful examination of the local geology and the collection and testing of samples.

The maps and accompanying report are available for download at http://dx.doi.org/10.14509/29447 and are available on request as printed maps from the Alaska Division of Geological & Geophysical Surveys for $13 per map sheet. The materials also will be available for inspection at the Anchorage DNR Public Information Center and at the Geologic Materials Center in Anchorage.

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