Laserfiche WebLink
3.2 Hazard Assessment Factors <br /> From the list of suspect homogeneous materials, a physical assessment was performed for each <br /> material on the list. A physical assessment includes evaluating the condition, assessing the <br /> potential for disturbance, and determining the fiiability of each material. Friability is a term <br /> used to describe the ease in which a building material inherently lends itself to disturbance. By <br /> definition, "liable" materials are those that can be crumbled or reduced to powder by hand <br /> pressure when dry. Each material on the list was father classified into one of three categories, <br /> which have specific sampling requirements for each category. <br /> Surfacing Materials: Refers to spray-applied or troweled surfaces such as plaster <br /> ceilings and walls, fireproofing, textured paints, textured <br /> plasters,and spray-applied acoustical surfaces. <br /> Thermal System Insulation: Refers to insulation used to inhibit heat gain or loss on pipes, <br /> boilers, tanks, ducts, and various other building components. <br /> Miscellaneous Materials: Refers to friable and non-friable products and materials that do <br /> not fit in any of the above two categories such as resilient floor <br /> covering, baseboards, mastics, adhesives, roofing material, <br /> caulking, glazing, and siding. This category also contains <br /> wallboard,joint compound and ceiling tile. <br /> All suspect ACMs were then assessed by their condition as good (intact), fair (damaged), or <br /> poor (significantly damaged) per Title 40 Code of Federal Regulations Part 763 (AHERA). <br /> Material with localized significant damage was also assessed as poor when observed. <br /> All suspect ACMs were further evaluated for their potential for disturbance and proximity to <br /> building occupant activities. These factors were considered to determine the "Relative <br /> Exposure Risk" as indicated in table 2. Furthermore, the National Emissions Standard for <br /> Hazardous Air Pollutants (NESHAPS) regulation categorizes asbestos-containing materials <br /> into one of three categories as indicated in tables 1 and 2. Category I non-friable asbestos- <br /> containing material (ACM) is defined as asbestos-containing packing, gaskets, resilient floor <br /> covering, and asphalt roofing products containing more than 1 percent asbestos as determined <br /> 5 <br />