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Circulating Good INDOOR AIR QUALITY by Nina Wolgelenter and Christian Taber, LEED AP All images courtesy Big Ass Fan Co. WHAT IS INVISIBLE TO THE EYE IS OFTEN STILL PREVALENT TO THE OTHER SENSES. INDOOR AQUATIC FACILITIES, DESPITE BEING OPEN AND VAST, OFTEN HARBOR POOR INDOOR AIR QUALITY (IAQ), WHICH CAN RESULT IN OCCUPATIONAL ASTHMATIC-RELATED ISSUES, THROAT, NASAL, AND EYE IRRITATION, AND OTHER HEALTH- RELATED SYMPTOMS. There are several factors that contribute to a natatorium’s struggle to maintain good air quality–– ones that have changed over the decades. Despite numerous facilities being more than 30 years old, many of today’s IAQ issues revolve around the type of chlorine used, community water supplies, and tighter building envelopes that trap contaminants indoors, making these facilities unable to perform at the levels expected of them. One constant, however, 44 the construction specifier | may 2013 CS_May2013.indd 44 4/16/13 3:34:51 PM