This course consists of 4 modules covering the GSAS Materials category and its criteria. Environmental impacts resulting from unsustainable material use include, materials depletion, climate change, fossil fuel depletion and air, water and land pollution. Measures that could mitigate environmental impact due to unsustainable use of materials include, diverting existing waste materials from landfill or incineration, using certified products and materials with enhanced environmental, health and resources conservation attributes and minimize transportation and disposal of soil through reuse and optimization of cut and fill balance.