According to ASHERA, how many air samples are required for final clearance for a NESHAP size project?

For projects that fall under the National Emission Standards for Hazardous Air Pollutants (NESHAP) regulations and are subject to the guidelines established by ASHERA (Asbestos Hazard Emergency Response Act), a specific number of air samples is required to ensure adequate clearance and compliance. The correct choice indicates that 13 air samples must be collected for final clearance of a NESHAP size project.

This requirement is established to ensure that the assessment of asbestos levels is thorough and reliable, minimizing the risk of exposure to hazardous materials after remediation. The number 13 is grounded in statistical norms for sampling, providing a margin that allows for a comprehensive evaluation of airborne asbestos fibers in various areas of the project site. This helps to affirm that the space is safely cleared for re-occupancy post-remediation efforts.

In contrast, lower numbers of samples would not offer the same level of confidence in accurately gauging air quality and may lead to inadequate clearance decisions, potentially compromising safety regulations intended to protect public health.