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1.0 PURPOSE OF SURVEY <br />A pre -demolition hazardous material inspection is intended to investigate a structure for potential ACM, <br />sample and provide accurate results to the customer in accordance with 40 CFR 763.86, the EPA regulations <br />for Asbestos Hazard Emergency Response Act (AHERA). <br />Sample test results will be displayed in the survey. Depending on the material sampled, there may be multiple <br />layers within each sample. These layers you will find broken out within each sample on the results report. Each <br />layer of the sample is prepared onto individual slides to be analyzed to provide the most accurate result. <br />1.1 DEFINITION OF ASBESTOS <br />Class 1: The most potentially hazardous class of asbestos jobs. This work involves the removal of asbestos - <br />containing thermal system insulation and sprayed -on or troweled -on surfacing materials. Employers <br />must presume that thermal system insulation and surfacing material found in pre-1981 construction <br />is ACM. That presumption, however, is rebuttable. If you believe that the surfacing material or <br />thermal system insulation is not ACM, the OSHA standard specifies the means that you must use to <br />rebut that presumption. Thermal system insulation includes ACM applied to pipes, boilers, tanks, <br />ducts, or other structural components to prevent heat loss or gain. Surfacing materials include <br />decorative plaster on ceilings and walls, acoustical materials on decking, walls, and ceilings, and <br />fireproofing on structural members. <br />Class 11: This work includes the removal of other types of ACM that are not thermal system insulation such as <br />resilient flooring and roofing materials. Examples of Class 11 work include removal of asbestos - <br />containing floor or ceiling tiles, siding, roofing, or transite panels. <br />Class 111: This asbestos work includes repair and maintenance operations where ACM or presumed ACM <br />(PACM) are disturbed. <br />Class IV. This work includes custodial activities where employees clean up asbestos -containing waste and <br />debris produced by construction, maintenance, or repair activities. This work involves cleaning dust - <br />contaminated surfaces, vacuuming contaminated carpets, mopping floors, and cleaning up ACM or <br />PACM from thermal system insulation or surfacing material. (Asbestos Standard for the <br />Construction Industry, OSHA 3096 2002(Revised)) <br />"Highlighted asbestos class work are what applies to the removal of the materials found to contain ACM <br />in this survey. If no class is highlighted, no asbestos was detected in this survey. <br />Friability: Friable ACM is any material containing more than one percent asbestos (as determined by Polarized <br />Light Microscopy) that, when dry, may be crumbled, pulverized, or reduced to powder by hand pressure. Non - <br />friable ACM is any material containing more than one percent asbestos (as determined by Polarized Light <br />Microscopy) that, when dry, cannot be crumbled, pulverized, or reduced to powder by hand pressure. Under <br />the Asbestos NESHAP, non -friable ACM is divided into two categories. Category I non -friable ACM are asbestos - <br />containing resilient floor coverings (commonly known as vinyl asbestos tile (VAT)), asphalt roofing products, <br />packaging and gaskets. These materials rarely become friable. All other non -friable ACM are considered <br />category II non -friable ACM. <br />Page 3 of 39 <br />