LEED v5 O+M Rating System_February 2026 - Page 075
Extracted Content
| Parameter | Concentration Limit (µg/m3) | Allowed Test Methods | Col4 |
|---|---|---|---|
| **Parameter ** | Concentration Limit **(µg/m3) ** | Laboratory-Based | Direct-Reading Instrument Minimum Specifications |
| EPA designated methods for ozone | resolution (5 min average data) ± 5 ppb | ||
| Nitrogen dioxide (NO2) | 40 µg/m3 (21 ppb) | Monitoring device with measurement range of 0– 500 ppb and lower detectable limit of 5 ppb | |
| TVOC* | N/A | Monitoring device that meets or exceeds building grade sensor requirements |
NOTE: May not earn points for both targeted one-time air testing and continuous indoor air monitoring for the same parameter.
AND/OR
Option 3. Targeted One-Time Individual Volatile Organic Compounds Testing (2 points)
Test for all volatile organic compounds (VOCs) listed in Table 3 at least once during the 12month reporting period. Laboratories that conduct the tests must be accredited under ISO/IEC 17025 for the test methods they use.
Calculate the total volatile organic compounds (TVOC) value per EN 16516:2017 ; CDPH Standard Method v1.2 2017, Section 3.9.4; [6] or an alternative calculation method if a full method description is included in the test report. If the TVOC levels exceed 500 µg/m [3], investigate for potential issues by comparing the individual VOC levels to associated cognizant authority health-based limits. Correct any identified issues and retest.
Two points are available for demonstrating that all contaminants do not exceed the concentration limits listed in Table 3.
Table 3. One-Time Air Testing of Individual Volatile Organic Compounds
| Contaminant (CAS#) | Concentration Limit | Allowed Test Methods (Laboratory-Based) |
|---|---|---|
| TVOC | Investigate and take corrective action if levels exceed 500 µg/m3. | ISO 16000-6; EPA TO-17; EPA TO-15 |
| Formaldehyde 50-00-0 | 20 µg/m3 (16 ppb) | ISO 16000-3, 4; |
6 CDPH, “Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions From Indoor Sources Using Environmental Chambers, Version 1.2,” January 2017, https://www.cdph.ca.gov/programs/ccdphp/deodc/ehlb/iaq/cdph%20document%20library/cdph- iaq_standardmethod_v1_2_2017_ada.pdf.
U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, November 2025 Edition 69