Pressure differential checks showed that the ERC was operating under a positive air pressure to the outside and that the exhaust systems were effectively ensuring air flow into toilets from the adjacent areas. Microbial sampling from AHU internal surfaces and airborne samples from the occupied space gave satisfactory results. A nontoxic, durable linoleum flooring made from linseed oil is installed in various ERC spaces, including the multi-media control room and various storage areas. This product is made from flax, pine tree resins, wood flour, jute and cork and does not emit dangerous gases when exposed to extreme heat. Linoleum also requires less maintenance, cleaning and buffing compared to vinyl flooring because linoleum promotes a matte finish, while vinyl flooring promotes a gloss finish, which requires more product and labor.
Manufacturing is environmentally friendly and requires very little energy use.
Production waste within the factory is also reused. A nontoxic acrylic, pressure-sensitive adhesive is used in the ERC's carpet and carpet padding installation. Off-gassing from traditional carpet and construction adhesives is a major contributor to poor indoor air quality. This product forms a tough, permanently tacky, resilient glue line that withstands heavy traffic. The tile adhesive used in the ERC is a nontoxic, nonflammable product containing no petroleum-based solvents.