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Northern Sierra Air Quality Management District
Gretchen Bennitt, Executive Director
Sierra Ozone Summit Summer 2008
Early Efforts Ozone monitors – Nevada City, Grass
Valley, White Cloud, Truckee, Penn Valley
Attend upwind and state ozone meetings City and County General Plan Elements Funded CNG fueling facility Health Advisories/Daily Air Quality
Forecasts
More Ozone Reductions
Worked together to lobby for Smog Check II in the Bay Area
Fulfilled federal SIP RACT requirements
Curbside green waste pickup
Local Mobile Source Emission Reductions
Basic Smog Check > $1,000,000 spent on diesel repowers > $1.6 million spent on emission
reduction projects– Funding low emission buses, low emission
vehicles, pass subsidies, marketing, remote conferencing, downloadable forms
– Bicycle/walking trails
Nevada County Health Statistics
Asthma is triggered by numerous factors, including ozone
Data indicate that Nevada County has a higher incidence of asthma than the state average. (Sources; Ca. Health Interview Surveys, KidsCAP survey from First Five of Nevada County, ALA State of the Air Report 2008)
There is variability in asthma data - more reliable data needed.
Days Per Year Above Federal 8-hr Ozone StandardBay Area, Sacramento and W. Nevada County
0
10
20
30
40
50
60
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Bay Area
Sacramento
W. Nevada County
VIOLATION
DAYS
YEAR
Source: California Air Resources Board AQMIS2
Upwind & Local Ozone Precursors2007 Summer Anthropogenic
Sacramento Non-attainment Area (325 tpd)
Bay Area AQMD (892 tpd)
Western Nevada County (24 tpd)
Source: California Air Resources Board, 8-Hour Ozone SIP Emission Inventory Projections, v1.06 RF#980 (CEFS), March 14, 2008
8-hour Ozone Values Grass Valley and Folsom
July 22, 23 - 2003
0
20
40
60
80
100
120
Time of Day
ppb
Grass Valley
Folsom
Next Steps
Continue to work with all agencies and public to reach attainment of health standard
Upwind & Local Ozone Precursors2007 Summer Anthropogenic
Sacramento Non-attainment Area (325 tpd)
Bay Area AQMD (892 tpd)
Western Nevada County (24 tpd)
Source: California Air Resources Board, 8-Hour Ozone SIP Emission Inventory Projections, v1.06 RF#980 (CEFS), March 14, 2008
Western Nevada County NOX2007 Summer Natural & Anthropogenic
Stationary Sources
(0.07 tpd)
Areawide (0.27 tpd)
Wildfires(0.37 tpd)
Mobile (13.19 tpd)
Source: California Air Resources Board, 8-Hour Ozone SIP Emission Inventory Projections, v1.06 RF#980 (CEFS), March 14, 2008
Western Nevada County ROG 2007 Summer Natural & Anthropogenic
Biogenic (56.92 tpd)
Areawide (2.05 tpd)
Stationary Sources (0.74 tpd)
Mobile (7.64 tpd)
Source: California Air Resources Board, 8-Hour Ozone SIP Emission Inventory Projections, v1.06 RF#980 (CEFS), March 14, 2008