What must be established prior to the construction of containment walls, floors, and ceilings?

Prior to the construction of containment walls, floors, and ceilings in situations where asbestos is present, it is essential to establish negative pressure of at least .02 inches of water column. This is a critical safety measure designed to prevent the spread of asbestos fibers from the containment area to adjacent spaces. By maintaining negative pressure, any potential leaks in the containment area will draw air inward rather than outward, effectively containing any hazardous materials and protecting workers and the surrounding environment from asbestos exposure.

Creating this controlled environment is paramount in ensuring compliance with health and safety regulations associated with asbestos removal and remediation. The negative pressure system helps ensure that airborne fibers remain contained, reducing the risk of respiratory issues and other health complications that can arise from asbestos exposure. Additionally, this practice aligns with regulations that seek to safeguard public health during asbestos remediation activities.