What type of procedures must be followed for variances involving alternative procedures according to the guidelines?

The correct answer highlights the necessity for a robust framework when it comes to handling variances involving alternative procedures. In this context, "familiar procedures" indicates that the variance must be based on methods and practices that are already known and well-understood within the regulatory framework. This helps ensure that any alternative approaches proposed maintain safety, compliance, and effectiveness while still allowing for flexibility in meeting asbestos regulations.

Using familiar procedures ensures that those implementing the alternative methods are not only capable of understanding the complexities involved but also able to effectively evaluate their success and consequences. In an area as critical as asbestos regulation, where health risks are significant, relying on established and familiar methods helps to minimize unforeseen risks and enhances accountability.

While other choices may suggest alternative procedural frameworks, they do not encapsulate the emphasis on using established methods that provide a solid foundation for any variance requests. The regulatory process relies on an understanding of established protocols, making options that deviate from familiarity less suitable in this context.