19F - RFP DEMO 710 714 AND 720 E 6TH ST

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State worker protection laws, as set forth by the California Occupational Safety and Health Administration, define asbestos materials as those that contain greater than one- tenth of one percent (>0.1 %) asbestos by weight (a.k.a., trace). To evaluate whether a "trace" material contains greater than 0.1 %, a test with a greater sensitivity, such as Transmission Electron Microscopy (TEM), would be required. 6. CLASSIFICATIONS OF ASBESTOS CONTAINING MATERIALS Following EPA inspection protocol, each identified suspect homogeneous material was placed in one of the following EPA classifications: 1. Surfacing Material: spray or trowel applied to building materials 2. Thermal System Insulation: materials generally applied to various mechanical systems 3. Miscellaneous Materials: any materials which do not fit either of the above categories NESHAPS further segregates asbestos- containing materials into Regulated Asbestos Containing Materials (RACM), Category 1 Non - Friable Materials, and Category IT Non - Friable Materials, defined as follows: Regulated Asbestos - Containing Materials (RACM): Includes all friable asbestos materials, Category 1 Non - Friable ACM that has become friable, or will become friable, and Category II Non - Friable ACM that has a high probability of being crumbled, pulverized, or reduced to powder by the forces expected to act on the material in the course of demolition or renovation. 2. Category I Non - Friable ACM: Includes asbestos - containing packing, gaskets, resilient floor covering, ash asphalt roofing products that, when dry, can be crumbled, pulveri zed, or reduced to powder by hand pressure. Category II Non - Friable ACM: Includes all non - friable materials, excluding Category I Non - Friable ACM that, when dry, cannot be crumbled, pulverized, or reduced to powder by hand pressure.. 7. ASSESSMENT AND CONDITION OF SAMPLED MATERIALS 7.1 ASSESSMENT The first level of assessment for a material is to classify whether the material is friable or nonfriable. A friable material is one that is able to be broken, crumbled, pulverized, or reduced to powder by hand - pressure. Most materials are easily determined as friable or not. While materials such as wallboard, joint compound, plaster and stucco in their finished state are classified as nonfriable, these same materials are often rendered friable when they are in a poor or damaged condition, or when they are involved in repair, renovation, or demolition activities. Some typically nonfriable materials also may become friable because of aging or deterioration, causing elements to separate from their binding agents. Visual inspection and physical handling are performed for all suspect materials to ensure proper friability classification. 190 -50