855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 490
Extracted Content
PM2.5
A design target of 10 ug/m3 was selected based on the WHO global air quality guidelines, PM2.5 interim target 4. [ 158] This number reflects the thinking that adverse effects from PM2.5 can occur at low concentrations approaching zero, so PM2.5 should be maintained as low as reasonably achievable in interior spaces.
If air cleaning systems are used to achieve the enhanced IAQ design targets, refer to the guidance on air cleaning devices in EQp2: Fundamental Air Quality .
DOCUMENTATION
| Project types | Options | Col3 | Paths | Col5 | Documentation |
|---|---|---|---|---|---|
| All | All | Option 1. Increased Ventilation | Option 1. Increased Ventilation | All | Calculations documented under the fundamental air quality prerequisite |
| All | All | Option 2. Enhanced Indoor Air Quality Design | Option 2. Enhanced Indoor Air Quality Design | All | Documentation provided under the fundamental air quality prerequisite |
REFERENCED STANDARDS
158 “WHO global air quality guidelines”, World Health Organization, (2021) https://iris.who.int/bitstream/handle/10665/345329/9789240034228-eng.pdf.
U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 480