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City of Santa Ana <br />Environmental Checklist <br />Table 3-1. Air Quality Data from Costa Mesa Station (ARB 30195) and Anaheim-Pampas Lane <br />Station (ARB 30178) <br />Pollutant Standards 2009 2010 2011 <br />Ozone (0a) <br />State Standard (1-HourAverage = 0.09 ppni) <br />National Standard (8-HourAverage = 0.075 ppm) <br />Maximum Concentration 1-Hour Period (ppm) 0.087 0.097 0.093 <br />Maximum Concentration 8-Hour Period (ppm) 0.072 0.076 0.077 <br />Days State 1-Hour Standard Exceeded 0 1 0 <br />Days National B-Hour Standard Exceeded 0 1 1 <br />Carbon Monoxide (CO) <br />State Standard (8-HourAverage = 9 ppm) <br />National Standard (8-HourAverage = 9 ppm) <br />Maximum Concentration 8-Hour Period (ppm) 2.16 2.09 2.22 <br />Days State/National 8-Hour Standard Exceeded 0 0 0 <br />Nitrogen Dioxide (NO2) <br />State Standard (1-HourAverage = 0.18 ppm) <br />Maximum 1-Hour Concentration 0.065 0.070 0.061 <br />Days State Standard Exceeded 0 0 0 <br />Suspended Particulates (PM10) <br />State Standard (24-HourAverage = 50 pg1m3) <br />National Standard (24-HourAverage = 150 pg/m3) <br />Maximum State 24-Hour Concentration 62.0 43.0 53.0 <br />Maximum National 24-HOUr Concentration 97.4 43.0 53.0 <br />Days Exceeding State Standard 1 0 0 <br />Days Exceeding National Standard 0 0 2 <br />Suspended Particulates (PM2.5) <br />National Standard (24-Hour Average = 35 pg/W) <br />Maximum 24-Hour Concentration 64.5 31.7 39,2 <br />Days Exceeding National Standard 5 0 2 <br />Notes: <br />ppm = parts per million <br />µg/m3 = microgram per cubic meter <br />Source: ARB 2012. <br />Sensitive Receptors and Locations <br />Some population groups, such as children, the elderly, and acutely and chronically ill persons, <br />especially those with cardio-respiratory diseases, are considered more sensitive to air pollution <br />than others. Sensitive receptors in the vicinity of the project include residential land uses located on <br />all sides of the project site, approximately 25 meters (about 82 feet) away, as well as the Lincoln <br />Elementary School that is located approximately 300 (about 984 feet) meters to the north of the <br />project site. <br />The oat Buddhist Meditation Center June 2013 <br />Initial Study /Mitigated Negative Declaration 3-13 ICF 00215.12 <br />31 C-66