The design of the building also incorporates other elements to reduce its impact on the environment. The building is equipped with a lighting system that detects natural ambient light sources and automatically dims artificial lighting to save 39% of the power usually required to light an office building. eBay's newest building also reduces demand on local water supplies by incorporating an eco-friendly irrigation system, and low-flow showerheads and faucets. Even during construction, more than 75% of the waste from construction was recycled. eBay also runs buses between San Francisco and the San Jose campus to reduce the number of commuting vehicles.[77] In 2014, eBay and several other Oregon businesses signed the Oregon Business Climate Declaration to promote local job growth and slow carbon pollution.[79]