Sacramento Overview Sierra Ozone Summit

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Sacramento OverviewSierra Ozone Summit

• Larry Greene
• Air Pollution Control Officer

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Were Geographically-Challenged
Summer Ground-level Ozone (smog)
The Sacramento valley is like a bowl. Strong
summer temperature inversions clamp a lid on
the bowl, creating stagnant conditions that cause
pollution to build until the inversion breaks and
ocean breezes dilute and dissipate ground-level
ozone air pollution.
NOX VOCSunlight 0zone


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National Rankings - 2007
Region is Consistently ranked in the Top 10 for
ozone pollution 1. Los Angeles 6.
Sacramento 2. San Joaquin Valley 7. Baton
Rouge 3. Southeast Desert, CA 8.
Dallas 4. Houston 9. Philadelphia 5. Nevada
County, CA 10. Ventura
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Monitor Locations and Status
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Air Quality Trends - OzoneConcentrations, 1980 -
2007
1 hour 31 improvement 8 hour 19 improvement
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Emission Source Equivalents 1 TPD of VOC and NOx
(Year 2019)
200,000 cars
18,000 HD trucks
72 Locomotives (NOx only)
310 Gas Stations (VOC only)
Base on average vehicle fleet mix No
additional controls after 2005
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Current Sacramento Regional NOx 167 TPD
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Current Sacramento Regional VOC 136 TPD
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NOx Inventory ForecastSacramento Nonattainment
Area
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Controls in Sacramento

• Over 40 adopted rules affecting
• Residents and schools
• water heaters,
• house paints, varnishes and other solvents
• wood burning appliances
• Industrial and commercial sources
• Electric power plants Automobile refinishing
• Auto repair shops Bakeries
• Asphalt paving Cabinet shops
• Boilers and water heaters Landfill gas
• Boat manufacturing Printing
• Agricultural sources
• Agricultural burning
• Confined animal feeding operations
• 10 new or amended rules under consideration

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2008 Benefits From District VOC RulesSacramento
Region 63 Tons/Day
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2008 Benefits From District NOx RulesSacramento
Region 20 Tons/Day
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Innovative Clean Air Strategies

• Incentive programs
• Other strategies

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District Mobile Source Actions
CMAQ
School Bus
EPA
DMV
Mitigation
Other

• Since 1998, 3784 engines, 88 million, 6.5 tons
  of NOx per day. (13 million/ton per day)

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Other Innovations

• Raleys trucks
• Off road NOx devices
• Propane generators

• Idling devices
• Switch engines
• Cap Corridor trains

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Nevada County Activities

• Grass Valley in Sacramentos Spare the Air ozone
  movies
• Extended movies to 24 hours per day to capture
  Grass Valley peak ozone levels
• Invited Northern Sierra APCD staff to
  participate in Sacramento planning efforts
• Community invited to suggest additional control
  measures
• Coordinate EPA grant to fund additional air
  monitoring equipment in Nevada County

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Progress towards attainment

• Use model results to project attainment
• Colored lines show attainment dates for each
  part of the region

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Questions???
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How difficult is attainment in 2012?Effects of
draconian strategies
Attainment Goal
Need 40 reductions to attain.
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