The quality of the inspection is determined by the quality of the samples that are collected, so it's important to use the best sampling and data-interpretation methods available. But there is currently little guidance as to which methods are better and which are worse; which result in a rational interpretation of the data, and which result in data that are difficult to interpret. Joe C. Spurgeon, Ph.D., who has conducted thousands of inspections, delivers objective guidance on sampling and data interpretation methods in this guidebook for inspectors and anyone concerned about safety. Read this book to learn: Which of the commonly used sampling methods result in reproducible sample results that can be interpreted and which methods don't. Why different airborne sampling methods may be needed to assess structural contamination and occupant exposure. How the reference, control, and database data-interpretation methods may be used to convert sample results into actionable information.