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City of South Bend— Former Gates Chevrolet/Toyota Facilities January 17, 2012 Page 5 of 7 (Form 44593 — Notification of Demolition and Renovation Operations) at least 10 days prior to the start of demolition /renovation activities. Any such Asbestos Containing Material Survey must be completed by a State of Indiana Registered Asbestos Inspector. The purpose of the asbestos inspection is identification of the presence of Asbestos Containing Materials (ACMs) in accordance with the National Emission Standard of a Hazardous Air Pollutant (NESHAP) for Asbestos 40 CFR 61, Subpart M, and 326 IAC 14 -10, Emission Standards for Asbestos; Demolition and Renovation Operations. The survey for ACMs will begin with a walk- through of the existing structure to document locations of friable and non - friable materials that may be present. Friable materials are those that can be pulverized or reduced to powder by moderate pressure, such as spray applied fireproofing and acoustical materials, ceiling tiles and most thermal system insulation. Non - friable materials are those that cannot be crumbled easily, such as resilient floor tiles and cement asbestos (Transite) board. Although emphasis is on detecting friable materials, the possible presence of non - friable ACMs must also be considered, during renovation, non - friable materials may be pulverized or otherwise damaged so as to release asbestos fibers into the air. The sampling strategy for any suspect material is dependent upon the application, the area of coverage and the uniformity of the application. 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 sprayed 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. 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. Sample collection will involve extraction /separation of approximately 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 an ACM for purposes of maintenance, renovation or demolition occurs if: 1. the material is visibly non -ACM (fiberglass and rubberized materials), 2. documentation indicates that the materials used in manufacture are non -ACM, or 3. sampling and analysis are performed. Wightman Petrie will attempt, through the application of our sampling strategy, to make a determination of the asbestos content of any identified homogeneous materials for which sampling is in fact performed (i.e., certain materials may be assumed to be asbestos - containing).