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