mitigate disease transmission (e.g., COVID-19).” 87 Fed. Reg. 60396. EPA requests information and recommendations from a broad array of individuals and organizations with knowledge and expertise relating to the built environment and health, IAQ, epidemiology, disease transmission, social sciences, and other disciplines. EPA states that it will analyze information received from the RFI to consider and support the potential development, improvement, and implementation of technical assistance efforts and other strategies “to support IAQ related improvements in the nation's building stock, with a particular emphasis on schools and commercial buildings.” Comments are due December 5, 2022.EPA Amends NESHAP At Major Sources From New And Existing ICI Boilers And Process Heaters: On October 6, 2022, EPA amended the national emission standards for hazardous air pollutants (NESHAP) at major sources from new and existing industrial, commercial, and institutional (ICI) boilers and process heaters. 87 Fed. Reg. 60816. Certain aspects of the NESHAP were challenged and subsequently remanded to EPA by the U.S. Court of Appeals for the District of Columbia Circuit. The final rule amends several numeric emission limits for new and existing boilers and process heaters consistent with the court’s opinion and sets compliance dates for these new emission limits. The final rule also provides further explanation of one aspect of EPA’s use of carbon monoxide (CO) as a surrogate for organic hazardous air pollutants (HAP) and its use of a CO threshold to represent the application of the maximum achievable control technology (MACT) for organic HAP. The final rule is effective on December 5, 2022.EPA Issues Calendar Year 2023 Allowances For Production And Consumption Of HFCs: On October 11, 2022, EPA announced that it issued calendar year 2023 allowances for the production and consumption of hydrofluorocarbons (HFC) in accordance with its regulations as established in the 2021 final rule entitled “Phasedown of Hy