Laserfiche WebLink
[. mogeneous areas of suspect asbestos were rated for friability based on the procedures <br />specified in the Asbestos Hazards Emergency Response Act (AHERA). Friable ACM is <br />considered ACM that when dry, can be crumbled, disintegrated, or reduced to powder by <br />hand pressure or by farces expected to act upon the material in the course of demolition, <br />renovation, or disposal. <br />AHERA also specifies the minimum number of samples to be collected and analy�ed to <br />prove that a suspect ACM is non-ACM, and defines suspect ACM as one of three <br />categories; "surfacing material" (e.g., fireproofing, ceiling texttues), "Ihertnal system <br />insulation" (TSI), and miscellaneous materials (anything other than surfacing materials or <br />TSI). <br />Ssmpling Activittes <br />An AHERA-certified building inspector from G-Logics obtained representative bulk <br />material samples on September l2, 2000 (Appendix A). The number of samples collected <br />for each homogeneous area of suspect ACM was detertnined based on AHERA protocol, <br />and on the discretion of ehe inspector (e.g. if the material could have been heterogeneous in <br />composition, more than one sample was collected). <br />Each collected sample was assigned a unique sample identification number consisting of the <br />assigned building number, homogeneous azea number, and a consecutive sample number <br />for each homogeneous area. For example, Sample I-9-2 is from the building designated as <br />Building 1(the curcent fire house), homogenous area 9(floor tile), and is the second sample <br />collected from this homogenous az�a. <br />Sample Analysis <br />Bulk samples were delivered to NVL Laboratories of Seattle, Washington for asbestos <br />analysis. The samples were analyzed for asbestos by NVL �sing polarized light microscopy <br />(PLM) with dispersion staining (Method EPA 600/M4-82-020). PLM is the U.S. <br />Environmental Protection Agen�y (EPA)-recommended method for assessing the <br />percentage of asbestos in building materials. PLM quantifies asbestos concentratio��s at <br />between 100 percent and 1-pe: cent detection levels. Levels below one percent can b: stated <br />only as "trace". For samples comaining rnore than one separable layer of materials, this <br />report includes findings for each layer. <br />01-0105•A-RT.doc . !{ �'/����J <br />Copyrigh� 2001 G•Logics, Inc. Page 2 of 5 �•� <br />:� <br />� <br />i <br />T <br />.�. <br />� <br />r <br />�; <br />: <br />i �: <br />� <br />s: <br />�. <br />�� <br />