Which of the following methods is the referenced standard for demonstrating compliance with EQp2: Fundamental...

LEED v5 EQp2: Fundamental Air Quality directly references ASHRAE Standard 62.1-2022 for indoor ventilation and air-quality design. Projects must investigate regional and local outdoor air quality in accordance with Sections 4.1 through 4.3 and satisfy ventilation and filtration requirements using applicable portions of Sections 5 and 6. The ventilation rate procedure, indoor air quality procedure, natural ventilation procedure, or an allowed combination may be used. ASHRAE Standard 55 addresses thermal environmental conditions and occupant thermal comfort rather than minimum ventilation. ASHRAE 90.1 primarily addresses building energy efficiency. Therefore, neither Standard 55 nor Standard 90.1 establishes the fundamental ventilation requirements requested by EQp2. The correct referenced standard for this prerequisite is ASHRAE 62.1-2022, making Option C correct.