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percent for particulates 1.0 micron to 10 microns in size and a rating of 75 percent for particles 0.3 to 1.0 <br />micron in size.11 A MERV 13 filter creates more resistance to airflow because the filter media becomes denser <br />as efficiency increases. The MERV filters do not remove gaseous pollutants; however. See Mitigation <br />Measure 1 in Section 6 of this report for details. Therefore, indoor (interior) exposure to DPM (of particles <br />greater than 1.0 micron) and consequently cancer risk a most -affected receptor (closest to the 1-5 freeway) <br />would be reduced by 90 percent, to 7.58 in one million; less than the 10 in one million SCAQMD threshold. <br />Outdoor levels, such as those experienced at the recreation area on -site, would still present a risk level <br />exceeding the SCAQMD MICR threshold of 10 in one million. <br />Non -Cancer Risks <br />The relationship for non -cancer health effects is given by the equation: <br />HIDPM = CDPM/RELDPM <br />Where, <br />HIDPM = Hazard Index; an expression of the potential for non -cancer health effects. <br />CDPM = Annual average diesel particulate matter concentration in µg/m3. <br />RELDPM = Reference Exposure Level (REL) for diesel particulate matter; the diesel particulate <br />matter concentration at which no adverse health effects are anticipated. <br />The non -carcinogenic hazards to adult, child and infant receptors are also detailed in Tables 13 through 16 <br />column (j). The RELDPM is 5 µg/m3. The Office of Environmental Health Hazard Assessment as protective <br />for the respiratory system has established this concentration. Using the maximum DPM concentration from <br />years 2023-2053, the resulting Hazard Index is: <br />HIDPM = 0.12136/5 = 0.0243 <br />The criterion for significance is a Hazard Index increase of 1.0 or greater. Therefore, the on -going operation <br />of the proposed project would not result in a significant impact due to the non -cancer risk from freeway - <br />related diesel emissions. <br />" Source: https://www.iso-aire.com/blog/what-are-the-differences-between-a-merv-13-and-a-hepa-filter <br />Cabrillo at First Mixed Use Residential <br />g3ldJ101 <br />Air Quality, Global Climate Change, HRA, and Energy Impact Analysis <br />45 19386 <br />