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f <br /> i' <br /> � ASBF�°TOS SAMPLING AND ANALYTICAL PROCIDURES <br /> Sampling Procedures <br /> Representative bulk samples of suspect asbestos containing building materials were randomly <br /> collected from interior of the building. Homogenous material determination was based on the <br /> following criteria: <br /> Similar physical characteristics(same color and texture, etc.) <br /> Application(sprayed-on,troweled-on, assembly into a system etc.) <br /> Material function(Thermal insulation, floor tile,wallboard system etc.) <br /> The bulk samples were collected on the inspection date. Condition assessments were performed <br /> by the accredited inspector during the inspection. <br /> PLM(Polarized Li�ht Microscop,y)Analvsis Methodology <br /> Laboratory services were provided by EMC Labs in Phoenix, AZ, a National Voluntary <br /> Laboratory Accreditation Program(NVLAP) certified laboratory(NVLAP code#0101926-0). <br /> PLM samples were analyzed utilizing the EPA's Test Methods: Methods for the deternunation of <br /> Asbestos in Bulk Building Materials (EPA 600/R-93/116, July 1993) and the McCrone Research <br /> Institute's The Asbestos Particle Atlas as method references. Additional treatment and tests may <br /> be required to accurately define composition (i.e. ashing, extraction, acetone treatment, and <br /> Transmission Electron Microscopy-TEM). <br /> Analysis was performed by using the bulk sample for visual observation and slide preparation(s) <br /> for microscopic examination and identification. The samples were analyzed for asbestos <br />' (chrysotile, amosite, crocidolite, anthophyllite, and actinolite/tremolite), fibrous non-asbestos <br /> constituents (mineral wool, cellulose, etc.) and non-fibrous constituents. Using a stereoscope, <br /> the microscopist visually estimated relative amounts of each constituent by deternLning the <br /> volume of each constituent in proportion to the total volume of the sample. <br /> FIl�IDINGS <br /> Interpretation of Asbestos Results <br /> Federal OSHA and EPA define an ACM as any material containing >1% asbestos. The lower <br /> limit of reliable detection for asbestos using the PLM analytical method is 1.0% by volume. If <br /> "<1%" appears in this report, it should be interpreted as meaning that asbestos was present in the <br /> sample,but the exact percentage is unknown. <br /> Per EPA NESHAP regulations, material with PLM-derived asbestos concentration of<10%must <br /> be assumed to be ACM until it is point counted to more precisely deternune the actual asbestos <br /> content. If this material is found to contain less than 1% asbestos by point counting, then it may <br /> be disposed of as non-hazardous waste. Any sample can be subjected to the more stringent Point <br /> Count Method of analysis to more precisely deterrrune the actual asbestos content. <br /> Page 5 <br />