A written project design is required whenever ACM to be abated exceeds how many linear feet in a non-school building?

A written project design is required for asbestos-containing material (ACM) abatement under specific regulations to ensure that the project is carried out safely and compliant with applicable standards. The threshold of 1,000 linear feet for non-school buildings is significant because it helps to standardize the level of oversight and planning required for larger abatement projects.

When ACM exceeds this amount, a more comprehensive approach is necessary to adequately address potential health risks associated with asbestos exposure. A written project design typically includes details such as the scope of the work, methodologies for safe abatement, and a plan for waste handling and air monitoring, thus ensuring that all safety measures are in place. This requirement reflects a recognition of the complexity and hazards associated with larger-scale removals, making a structured plan essential for protecting workers and the environment.

In contrast, lesser amounts of ACM might not present the same level of risk or logistical challenges, which is why the threshold is set at 1,000 linear feet. Projects below this amount might still require certain safety protocols but do not necessitate a formal written design under the same stringent guidelines.