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*:/ : 11-1 h WA <br />Table 4 SCAQMD Significance Thresholds <br />Air Pollutant <br />Construction Phase <br />Operational Phase <br />Reactive Organic Gases (ROGsu Volatile <br />Organic Compounds (VOCs) <br />75lbs/day <br />55 Ibs/day <br />Nitrogen Oxides (NOx) <br />100lbs/day <br />55lbs/day <br />Carbon Monoxide (CO) <br />550 Ibs/day <br />550lbs/day <br />Sulfur Oxides (SOx) <br />150lbs/day <br />150 Ibs/day <br />Particulates (PMto) <br />150lbs/day <br />150lbs/day <br />Particulates (PM25) <br />55lbs/day <br />55lbs/day <br />Source: SCAQMD 2015b. <br />Projects that exceed the regional significance threshold contribute to the nomttainment designation of the <br />SoCAB. The attainment designations are based on the AAQS, which are set at levels of exposure that are <br />determined to not result in adverse health. Exposure to fine particulate pollution and ozone causes myriad <br />health impacts, particularly to the respiratory and cardiovascular systems: <br />■ Linked to increased cancer risk (PM25, TACs) <br />■ Aggravates respiratory disease (03, PM,,) <br />■ Increases bronchitis (03, PM25) <br />■ Causes chest discomfort, throat iffitation, and increased effort to take a deep breath (03) <br />■ Reduces resistance to infections and Increases fatigue (03) <br />■ Reduces lung growth in children (PM25) <br />■ Contributes to heart disease and heart attacks (PM25) <br />■ Contributes to premature death (03, PM25) <br />■ Linked to lower birth weight in newborns (PM25) (SCAQMD 2015c) <br />Exposure to fine particulates and ozone aggravates asthma attacks and can amplify other lung ailments such <br />as emphysema and chronic obstructive pulmonary disease. Exposure to current levels of Pn5 is responsible <br />for an estimated 4,300 cardiopulmonary related deaths per year in the SoCAB. In addition, University of <br />Southern California scientists responsible for a landmark childreiA health study found that lung growth <br />improved as an: pollution declined for children aged 11 to 15 in five communities in the SoCAB (SCAQMD <br />2015d). <br />Mass emissions in Table 4 are not correlated with concentrations of air pollutants but contribute to the <br />cumulative air quality impacts in the SoCAB. Therefore, regional emissions from a single project do not <br />single-handedly trigger a regional health impact. SCAQMD is the primary agency responsible for ensuring the <br />health and welfare of sensitive individuals to elevated concentrations of au quality in the SoCAB. To achieve <br />the health -based standards established by the EPA, SCAQMD prepares an AQMP that details regional <br />programs to attain the AAQS. <br />75C-152 <br />