Air Quality in San Diego County

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Air Quality in San Diego County
NACAA Fall Membership Meeting, 2007
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Americas Finest City
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Snapshot of San Diego County

• 4,200 square miles
• 70 miles of Coastline
• 3.1 million people
• 1.6 million jobs
• 2.2 million vehicles
• 84 million daily VMT

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Build-Up of Ozone
Inversion Layer
Photochemical Smog
Ocean Breeze
Los Angeles
San Diego
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1975 First to require vapor controls at gas
stations
1956 Monitoring began at San DiegoPublic Library
1955 Board activates APCD
1985 Monitoring began for air toxics
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Air Quality Improves Despite Growth
100 80 60 40 20 0
Vehicle Miles Traveled (millions/day)
Days Over Federal 8-Hour Ozone Standard
Countywide Population (100,000s)
90 91 92 93 94 95 96 97 98 99 00 01
02 03 04 05 06
YEARS
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Lawnmower Exchange
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School Bus Retrofits
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Transborder Truck Retrofits
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Challenges
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Thank you.