Air Quality in San Diego County NACAA Fall Membership Meeting, 2007.
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Transcript of Air Quality in San Diego County NACAA Fall Membership Meeting, 2007.
Air Quality in San Diego County
NACAA Fall Membership Meeting, 2007
2
America’s Finest City
3
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
4
Inversion Layer
Photochemical SmogPhotochemical Smog
Ocean Breeze
Build-Up of Ozone
Los Angeles
San Diego
5
19751975APCD
separatesfrom HealthDepartment
19811981Attains federal
annual NO2 standard19921992
State standard
19561956Monitoring began
at San DiegoPublic Library
19551955Board activates
APCD
19751975First to requirevapor
controlsat gas
stations
19851985Monitoring
beganfor air toxics
20032003Health alertsduring and
after firestorms
19911991Last Stage 1Smog Alert
19791979Last Stage 2
20052005Annual federalPM2.5 standard
attainment
20032003Attains federal1-hour ozone
standard
19951995Attains StateCO standard
19981998Federal
standard
100
80
60
40
20
090 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05
06YEARS
Vehicle Miles Traveled (millions/day)
Countywide Population (100,000s)
Days Over Federal
8-Hour Ozone
Standard
Air Quality Improves Despite Growth
7
Lawnmower Exchange
8
School Bus Retrofits
9
Transborder Truck Retrofits
10
Challenges
Thank you.