Laserfiche WebLink
MacArthur Project Modification - Santa Ana - Air Quality Assessment <br />KPC Environmental, Inc. <br />4.0 Air Quality Data for SCAB <br />4.1 Air Quality Management Planning & Regulatory Setting <br />The Federal Clean Air Act (1977 Amendments) required that designated agencies in any <br />area of the nation not meeting national clean air standards must prepare a plan <br />demonstrating the steps that would bring the area into compliance with all national <br />standards. Table 4-1 contains the federal and state emissions standards with relevant <br />health concerns. <br />Table 4-1 Ambient Air Oualitv Standards <br />AIR STATE STANDARD FEDERAL MAJOR SOURCES MOST RELEVANT <br />POLLUTANT PRIMARY EFFECTS <br /> STANDARD <br />Ozone (03) 1 br - 0.09 ppm 1 hr- • Motor vehicles, paints, Short-term exposures: <br /> 8 his - 0.07 ppm 8 hrs - 0.08 ppm coatings, solvents. Pulmonary function <br /> decrements and breathing <br /> difficulty. Long-term <br /> exposures: Risk to public <br /> health, vegetation damage, <br /> property damage. <br />Carbon Monoxide 1 hr - 20 ppm l hr - 35 ppm Internal combustion Aggravation of aspects of <br />(CO) 8 hrs - 9 ppm 8 hrs - 9 ppm engines (vehicles). coronary heart disease; <br /> decreased exercise tolerance <br /> in persons w. vascular and <br /> lung disease; impairment of <br /> CNS functions; possible <br /> increased risk to fetuses. <br />Nitrogen Dioxide Annual Average - 0.03 Annual Average - 0.053 Internal combustion Risk to public health implied <br />(NOz) ppm ppm engines (vehicles). by pulmonary and extra- <br /> I hr - 0.018 ppm l hr - • pulmonary biochemical and <br /> cellular changes and <br /> pulmonary structural changes; <br /> contributions to atmospheric <br /> discoloration. <br />Sulfur Dioxide Annual Average - ` Annual Average - 0.03 Fuel combustion, Broncial constriction <br />(S02) 1 hr - 0.25 ppm ppm petroleum refining accompanied by symptoms <br /> 24 hrs - 0.04 ppm 1 hr - • processes, chemical which may include wheezing, <br /> 24 hrs - 0.14 ppm facilities. shortness of breath and chest <br /> tightness during exercise or <br /> physical activity in persons w. <br /> asthma. <br />Suspended Annual Arithmetic Mean Annual Arithmetic Mean - Construction, industry, Exccss deaths from short- <br />Particulate Matter - 20µg/m3 • agriculture, vehicles, term exposures and <br />(PM10) and natural occurrences exacerbation of symptoms in <br /> 24 hrs - 50µg/m3 (wind, storms) sensitive patients w/ <br /> 24 hrs - 150pg/m3 respiratory disease; declines <br /> in pulmonary function <br /> especially in children; <br /> increased risk of premature <br /> death from heart or lung <br /> diseases in elderly. <br />Suspended Annual Arithmetic Mean Annual Arithmetic Mean - Construction, industry, <br />Particulate Matter - 12µg/m3 15pg/m3 agriculture, vehicles, <br />(PM2.5) and natural occurrences <br /> 24 hrs - • 24 hrs - 35pg/m3 (wind, storms) <br />Lead (Pb) Monthly - 1.5µg/m3 Monthly - • Battery manufacturing Leaming disabilities in <br /> and recycling. children; impairment of blood <br /> Quarterly - • Quarterly - 1.5µg/m3 Combustion processes. formation and nerve <br /> conduction. <br />Sulfates (S04) 24 hrs - 25pg/m3 • Industrial Processes. Decrease in ventilatory <br /> function; aggravation of <br /> asthma symptoms; vegetation <br /> damage; degradation of <br /> visibility. <br />Sources - CARB and SCAQMD • - no standard established ppm - parts per million, µg/m3 - micrograms per cubic meter <br />02/02/11 <br />75B-113