Category I flooring and when it becomes regulated
Under the district's definitions, vinyl and other resilient floor coverings, along with mastics, are Category I nonfriable material. While tiles are intact and lifted whole they are not regulated asbestos-containing material under the district rule. Sanding, grinding, cutting or abrading changes that, and so does breaking them up in demolition: the flooring becomes regulated, with containment, wet methods and, from 100 square feet, notification. Grinding old mastic off a concrete slab is therefore a decision to make only after the results are in.
Disposal follows the same split. Under DTSC rules, waste counts as hazardous when it is friable and at least 1% asbestos; intact nonfriable bulk waste sits outside those hazardous waste regulations, although landfills and haulers can set their own conditions. Cost follows the floor area, the number of layers, whether the mastic comes up, and how the waste is classed.
Lifting an old kitchen floor in Dublin often exposes duct boots and wall bases with their own suspect materials, so the whole-room approach under asbestos abatement before renovation and demolition is worth reading before demolition day. Every other material we handle is summarized on the Dublin CA Asbestos Removal homepage.