Health effects of PM California EPA: Air Pollution - Particulate Matter Brochure http://www.arb.ca.gov/html/brochure/pm10.htm CA EPA Air Resources Board 2009 California Environmental Protection Agency CA EPA Air Resources Board 2009 California EPA: Air Pollution – Particulate Matter Brochure Particulate Matter The California EPA California Environmental Protection Agency California EPA: Air Pollution – Particulate Matter Brochure Particulate Matter Air Pollution