855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 237

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The testing process considers various contaminants, each with its impact on health and comfort. For example, monitoring particulate matter (PM) levels helps address potential respiratory concerns, while testing for TVOC may indicate issues with products used in the space.

Option 2 uses direct-read instruments that measure TVOCs rather than individual VOCs, offering a general view of air quality. This approach differs from Option 3, which includes laboratory-based methods that allow teams to examine individual VOC levels in greater detail.

Project teams cannot acquire points for targeted one-time air testing and continuous air monitoring for the same parameter (PM2.5 and TVOC).

Number of measurements The number of measurement points required is outlined in Table 5 below. The table provides a consistent number of measurements per floor area (square feet or square meters) to help with planning for testing and the associated costs.

The floor area in Table 5 reflects the total occupied floor area for the project, including all regularly and non-regularly occupied areas. For example, corridors are non-regularly occupied and must be included in the total area for this calculation. Unoccupied areas, such as mechanical and electrical rooms, are excluded.

Projects may choose to take more measurements beyond the minimum if desired. Exceeding the minimum number of measurements does not earn additional points but will provide a more comprehensive assessment of the indoor air quality.

Table 5. Number of measurements required for Option 2 testing

Total occupied floor area, sq. ft. (sq. m.)	Number of measurements
≤5,000 (500)	1
>5,000 (500) and ≤15,000 (1500)	2
>15,000 (1500) and ≤25,000 (2500)	3
>25,000 (2500) and ≤200,000 (20,000)	Four plus one additional measurement per each 25,000 sq. ft. (2500 sq. m.) above 25,000 sq. ft.
>200,000	Ten plus one additional measurement per each 50,000 sq. ft. (500sq. m.) above 200,000 sq. ft.

Measurement locations Measurement locations must be selected to best represent the project occupancy and function(s). Use the following criteria to determine representative locations for the project:

U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 227