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City of South Bend June 3, 2013 Page 2 of 5 The sampling strategy for any suspect material is dependent upon the application, the area of coverage and the uniformity of the application. In accordance with the United States Environmental Protection Agency (USEPA) 40 CFR 763.83, Subpart E definitions, there are three (3) types of asbestos containing materials (ACMs): 1. Thermal System Insulation (TSI), 2. Surfacing Materials (S), and 3. Miscellaneous Materials (Misc). Thermal System Insulation is material used to prevent heat loss or gain and prevent condensation, and includes: pipe insulation, valve and fitting insulation, boiler system insulation, breeching insulation and tank insulation. Surfacing materials are spayed on, troweled on or materials otherwise applied to a surface and include: acoustical plaster, fireproofing on structural members or decking, or on surfaces for the purpose of fireproofing. Miscellaneous or 'other" materials are those that are not characterized as Thermal System Insulation or Surfacing Materials, and include: ceiling tile, floor tile, roofing felt, cove base and associated adhesive or mastic. Each suspect ACM (i.e., TSI, S or Misc.) identified from the initial walkthrough of the facilities will be placed into a group of similar materials identified as a homogeneous area. Homogeneous areas are identified as materials of the same type, color, texture and estimated age of installation. Upon identifying homogeneous areas, representative samples will be collected on a random basis. The number of samples collected depends upon the type of material (TSI, S, Misc) and the amount of the material, in accordance with the following, based on OSHA regulations detailed in 29CFR 1926.1001). Type of Material Amount Number of Samples Surfacing Materials < 1,000 SF Minimum of 3 samples 1,000 to 5,000 SF Minimum of 5 samples > 5,000 SF Minimum of 7 samples Thermal System Insulation < 6 LF /SF 1 sample required > 6 LF /SF Minimum of 3 samples Misc/Other Any Sufficient to determine ACM /Non -ACM General in accordance with 3/5/7 protocol for Surface Materials Notes: LF — Linear Feet, SF — Square Feet The asbestos containing material (ACM) survey will be performed by an Indiana Certified Asbestos Building Inspector. At any time during the survey, the Inspector can elect to assume that a specific material is asbestos containing, and thereby forego sampling requirements for that homogeneous area. Samples, as appropriate, will be collected in general conformance with the procedures outlined in the Asbestos Hazard Emergency Response Act of 1986 (AHERA). Sample collection will involve extraction /separation of approximately 1 to 10 cubic centimeters of the suspect material, inclusive of all layers present within the material. Only suspect material samples will be submitted for laboratory analyses. Samples will be sealed in airtight containers, numbered and labeled, and forwarded to an approved laboratory for analysis by the EPA recommended method of Polarized Light Microscopy (PLM) coupled with dispersion staining. Sampling and analysis of suspect materials is performed in an effort to try and confirm the presence of asbestos, or eliminate suspect materials as ACMs. Elimination of a material as ACM for purposes of maintenance, renovation or demolition occurs if: 1. the material is visibly non -ACM (fiberglass and