Indoor Environmental Quality (IEQ)
Indoor Chemical and Pollutant Source Control (1)
Avoid exposure of building occupants to potentially hazardous chemicals that adversely impact air quality.
Design to minimize cross-contamination of regularly occupied areas by chemical pollutants:
Employ permanent entryway systems (grills, grates, etc.) to capture dirt, particulates, etc. from entering
the building at all high volume entryways, AND provide areas with structural deck to deck partitions with
separate outside exhausting, no air recirculation and negative pressure where chemical use occurs
(including housekeeping areas and copying/print rooms), AND provide drains plumbed for appropriate
disposal of liquid waste in spaces where water and chemical concentrate mixing occurs.
Design to physically isolate activities associated with chemical contaminants from other locations in the building,
providing dedicated systems to contain and remove chemical pollutants from source emitters at source locations.
Applicable measures include eliminating or isolating high hazard areas; designing all housekeeping chemical
storage and mixing areas (central storage facilities and janitors closets) to allow for secure product storage;
designing copy/fax/printer/printing rooms with structural deck to deck partitions and dedicated exhaust ventilation
systems; and including permanent architectural entryway system(s) to catch and hold particles to keep them from
entering and contaminating the building interior.
Consider utilization of EPA registered anti-microbial treatments in carpet, textile or vinyl wall coverings, ceiling
tiles or paints where microbial contamination is a concern. Utilize "breathable" wall finishes where circumstances
require, to reduce moisture build-up and prevent microbial contamination. Minimize selection of fibrous materials,
e.g. insulation, carpet and padding and flexible fabrics, whose exposed surfaces when exposed to the air stream
or occupied space can contribute significant emissions and absorb and re-emit other contaminants over time.
Controllability of Systems
Provide a high level of individual occupant control of thermal, ventilation, and lighting systems to support optimum
health, productivity, and comfort conditions.
Provide a minimum of one operable window and one lighting control zone per 200 s.f. for all occupied areas
within 15 feet of the perimeter wall.
Provide controls for each individual for airflow, temperature, and lighting for 50% of the non perimeter,
regularly occupied areas.
Provide individual or integrated controls systems that control lighting, airflow, and temperature in individual rooms
and/or work areas. Consider combinations of ambient and task lighting control and operable windows for
perimeter and VAV systems for non perimeter with a 1:1: 2 terminal box to controller to occupant ratio.
Provide for a thermally comfortable environment that supports the productive and healthy performance of the
Comply with ASHRAE Standard 55-1992, Addenda 1995 for thermal comfort standards including humidity
control within established ranges per climate zone.
Install a permanent temperature and humidity monitoring system configured to provide operators control over
thermal comfort performance and effectiveness of humidification and/or dehumidification systems in the
Integrated envelope and HVAC system design strategies that achieve thermal comfort conditions based on mean
radiant temperature, local air velocity, relative humidity, and air temperature. Install and maintain a temperature
and humidity monitoring system for key areas of the building (i.e., at the perimeter, and spaces provided with
humidity control). This function can be satisfied by the building automation system. Specify in system operation
manuals that all sensors require quarterly calibration. Include criteria verification and system operation in
Adapted material not reviewed or endorsed by U. S. Green Building Council.
U. S. Green Building Council. Used by permission.
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