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As a native Californian who now suffers from adult-onset asthma and
other progressively worsening respiratory problems, I have a
personal interest in stronger standards for California's
construction equipment, which accounts for 20% of particulate
matter (soot) and 16% of smog-forming Nitrogen Oxides (NOx), two
of the biggest pollution hazards for public health in California
and throughout the country.

Exposure to smog can have serious effects on respiratory
health (shortness of breath, throat irritation, chest pains and
coughing) and lead to asthma attacks, hospital admissions and
emergency room visits. Particulate air pollution or soot can be
inhaled, reach deep into the lungs, enter the circulatory system
and damage blood vessels. Particulate pollution is associated with
heart attacks, irregular heartbeat, asthma attacks, reduced lung
function and bronchitis.

Please adopt the proposed regulation and help prevent 4,000
premature deaths; reduce health care and hospital visits of $18 to
$26 billion; help bring the most polluted areas of California (the
Los Angeles/Long Beach air basin and the San Joaquin Valley) into
attainment with federal air quality standards; and by 2020,
prevent 48 tons per day of NOx and 5 tons per day of
particulate air pollution from entering our air.

Thank you.