The chapter talks about a tool called Life Cycle Assessment (LCA) used to check how a ventilation project affects the environment. LCA looks at all the materials and waste involved in a project from start to finish to see its environmental impact. It helps industries learn more about their products' effects on nature and make better decisions like what to buy or how to make products. LCA can also be a way to share environmental progress with others. Other tools mentioned are risk analysis, cost-benefit checks, and evaluating how projects impact the environment.