Protect and Enhance Indoor Environmental Quality

• Provide non-smoking buildings, or separate ventilation systems where smoking is allowed (such as in high-rise housing).

• Monitor delivery of outside air ventilation so that it responds to demand by using sensors for carbon dioxide levels to adjust air flow.

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The Center for Neighborhood Technology, Chicago, Illinois, designed by Farr Associates, a LEED Platinum certified project, shows some of the elements that make up a green building project. Energy use is estimated to be 50% less than a standard building.

• Provide for 30% increased ventilation above code levels, or natural ventilation of indoor work areas, to increase the amount of healthy air in the building.

• Conduct construction activities so that there is clean air at the startup of systems and no dust or moisture in materials such as ductwork and sheet rock. The idea is to get rid of "new-building smell" and its associated toxicity.

• Use low-emitting materials in the building to reduce sources of future contamination, including off-gassing from paints and coatings, adhe-sives and sealants, carpets and backing and composite (or engineered) wood or agrifiber products.

• Make sure that areas where chemicals are mixed or used (such as in-house printing plants or large copy rooms) are separately ventilated, and install walk-off mats or grilles at building entrances to capture contaminants before they enter the building.

• Provide for individual thermal comfort of building occupants, with respect to temperature and humidity.

• Provide for occupant control of building lighting and ventilation systems.

• Provide for adequate daylighting of interior work spaces, using both vision glazing and overhead light sources such as skylights and roof monitors (vertical glazing).

• Provide for views of the outdoors from at least 90% of all workspaces so that people can connect with the environment.

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