This document is a presentation by John Den Boer, AIA, LEED AP BD + C from HBA Architecture & Interior Design about how Kellam High School reduced its impact on the local ecosystem. The presentation defines ecosystems and explains their importance. It then discusses how Kellam High School limited habitat destruction, air pollution, water pollution, and ground pollution through practices like using natural daylight, collecting rainwater, stormwater management, recycling, and choosing sustainable materials.