Vermiculite is not an uncommon find in my area and a lot of that stuff was Zolonite. The amount of asbestos contained in this stuff was somewhere on the order of 1 to 2 percent. Our resident asbestos training company (Milwaukee Lead and Asbestos) states that because of the small percentages it is possible to get a negative test and yet the product is asbestos containing. Since testing is inconclusive they will not even test for the stuff. The client is told to treat it as asbestos containing. I do report the insulation as a possible asbestos containing material and that testing results are not conclusive. I have the PDF brochure on Vermiculite and print that with the report.

__________________
Carl Eisen
West Bend, WI