SCS Indoor Advantage Gold
Auditing / Certification Body
Third party assessed by non-verified bodies
Chemicals and Extraction
Environmental Management, Indoor Air Quality, Waste and Chemicals Management, Worker Safety
The California Office of Environmental Health Hazard Assessment (OEHHA) has an active program to develop chronic toxicity guidelines for air pollutants. The program uses procedures, developed by the U.S. Environmental Protection Agency, that have been subject to extensive peer review and public comment. To date, this program has developed Chronic Reference Exposure Levels (CRELs) for 80 chemical substances, a number of which may be emitted by building products (Read about CRELs on the OEHHA site). The CRELs assume long-term exposures and include a number of conservative uncertainty factors; these CRELs are the scientific basis for the Indoor Advantage Gold certification program. In order for a product to qualify for the Indoor Advantage Gold certification, modeled concentrations for individual VOCs in classrooms and offices must not exceed one-half of the defined CREL threshold. Given that other (uncertified) products and materials in the building may be sources for the same chemicals, the conservative standard set for Indoor Advantage Gold certification is intended to ensure that individual occupants’ overall exposure to any one of these chemicals does not exceed the CREL.