What is an essential requirement for achieving LEED certification in the Indoor Environmental Quality category?

Achieving LEED certification in the Indoor Environmental Quality category necessitates the implementation of policies for tobacco smoke control. This requirement emphasizes the importance of providing a healthy and comfortable indoor environment for building occupants. Poor indoor air quality can severely affect the health of the occupants, leading to increased absenteeism and decreased productivity. By controlling tobacco smoke, buildings can reduce harmful pollutants in the air, thus promoting better health outcomes.

In contrast, while the use of photovoltaic systems and energy-efficient windows can contribute to overall building sustainability, they specifically relate to energy performance rather than indoor environmental quality. Similarly, maximizing the use of concrete materials is more aligned with considerations of resources and materials rather than directly addressing aspects of air quality and occupant health that the Indoor Environmental Quality category focuses on. Hence, the correct focus within this category is indeed on managing pollutants, such as tobacco smoke.