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Are there any site examples where > 1% asbestos values in soil resulted in unusually low ABS results? If so, what are the reasons for this?

April 26, 2017ABS asbestos examples low resulted site soil unusually values

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Are there any site examples where > 1% asbestos values in soil resulted in unusually low ABS results? If so, what are the reasons for this?

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• There are data showing that when ACM (>1%) is present air levels can be quite low. See ATSDRs reports on Illinois Beach State Park and Quincy Mine or EPAs report on North Ridge Estates. http://www.atsdr.cdc.gov/HAC/PHA/index.asp. Also, high soil moisture (>10%) may reduce the release of asbestos fibers to air following a disturbance. ABS results for yards where soil moisture ranged from 18-45% showed PCMe fiber concentrations of 0.004-0.008structures/cc. Because high soil moisture may adversely impact RME estimates of fiber releasability for a given disturbance activity, the Committee generally recommends ABS events be conducted when soil moisture is no greater than 10%.