FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

One to three samples per miscellaneous material Three samples of each type of thermal system insulation Samples of friable surfacing materials according to the 3/5/7 rule based on quantity of material [3 samples of each material comprising less than 90 square meters (1,000 square feet), 5 samples of each material comprising 90 to 450 square meter (1,000 to 5,000 square feet), and 7 samples of each material comprising more than 450 square meters (5,000 square feet)] Samples of nonfriable surfacing materials as deemed appropriate by the inspector • Collected bulk samples after first wetting the material with a light mist of water. The samples were then cut from the substrate and transferred to a labeled container. The presence of resilient flooring materials concealed under carpeting was checked in several representative Iocations. Note that when multiple samples were collected, the sampling locations were distributed j throughout the homogeneous area (spaces where the terial was observed). j • Relinquished the bulk samples to a laboratory accredited by the DHS and the National Institute of Standards and Technology National Voluntary Laboratory Accreditation Program (NIST- NVLAP)for bulk asbestos fiber analysis. Polarized light microscopy (PLM) analysis of bulk asbest s samples collected from the building interiors and exteriors revealed the presence of asbestos at concentrations greater than 1% in the materials listed below: • Roofing penetration mastic used on the office anc equipment building, gas house and warehouse; and • Mudded pipe fittings (5 and 10-centimeter [2 and 4-inch]) used.in the office and equipment building. In addition, the following materials were not sampled and are assumed to contain asbestos: • Ceramic floor tile and mastic in the office and equipment building shower areas; and i • MarliteTM wall panels and mastic in the office and equipment building restroom and shower areas. Ceramic floor tiles and MarliteTM wall panels were not sampled. Sampling activities would have significantly damaged the materials in question and would likely have contributed to the potential release of asbestos fibers into occupied areas of the building. The approximate sampling locations are depicted in Figure 14. ACBM identified during this survey were observed to be in good condition. Table 3 incl ides the following information, which is presented for each suspect ACBM type: j Project No.58225-06-146 -25 - May 25.2001