On February 15, 2012, the American National Standards Institute (ANSI) notified the Indoor Environmental Standards Organization (IESO) of the approval of the IESO/RIA 6001-2011 Evaluation of Heating, Ventilation and Air Conditioning (HVAC) Interior Surfaces to Determine the Presence of Fire-Related Particulate as a Result of a Fire in a Structure. This is the first ANSI-approved standard for IESO. It was produced in close cooperation with a committee convened by the Restoration Industry Association (RIA). “The completion of this standard represents the efforts and expertise of many individuals, and we would like to acknowledge the IAQA and IESO Boards of Directors who provided the funding, leadership, staffing and guidance necessary to achieve this important milestone,” said Brad Harr, chairman of the IESO Consensus Body. The standard has been in development since early 2009 and will be used in the field to help determine if fire-related residues have been deposited on HVAC interior surfaces.