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ME INDOOR ENVIRONMENTAL ENGINEERING 1313 <br />1448 Pine Sheet, Snite 103 San Fre��cisen, Califon. 94109 <br />Telephone; (41 ) 567-7700 <br />E-mall: o7t-enrcam>(d lEh>9F ama <br />htta:i ww .icesfmin <br />Date: May 4, 2020 <br />To: Rebecca Davis <br />Lozeau I Drury UP <br />1939 Harrison Street, Suite 150 <br />Oakland, California 94612 <br />From: Francis J. Offermann PE CIH <br />Subject: Indoor Air Quality: The Bowery — Santa Ana, CA <br />(IEE File Reference: P-4358) <br />Pages: 19 <br />Indoor Air Quality Impacts <br />Indoor air quality (IAQ)directly impacts the comfort and health of building occupants, and <br />the achievement of acceptable IAQ in newly emrslrueted and mnovat'ed building% is a well - <br />recognized design objective. For exarnple, IAQ is addressed by major high-performance <br />building rating systems and building codes (C.alifomia Building Standards Commission, <br />2014; USC.BC, 2014). Indoor air quality in homes is particularly important because <br />occupants, on average, spend approximately ninety pcTcent of their time indoors with the <br />majority of this time spent at home (EPA; 2011). Some segments of the population that are <br />most susceptible to the effects of poor IAQ, such as the very young mid the elderly, occupy <br />their homes almost continuously. Additionally, an increasing number of adults are working <br />from home at least some of the time during the workweek. Indoor air quality also is a <br />serious concern for workers in hotels, mriices and other business establishments. <br />The conccnhutions of many air pollutants often are cicvated in homes and other buildings <br />relative to outdoor air because many of the materials and products used indoors contain <br />and release a variety of pollutants to air (Hodgson at aL, 2002, O1t'ermann and Hodgson; <br />19 <br />75C-38 <br />