Planning to Achieve the 8-Hour Ozone Standard

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Planning to Achieve the 8-Hour Ozone Standard

• Houston-Galveston-Brazoria
• 8 County Non-Attainment Area
• Rice Sustainability Center
• October 6, 2004
• Doug Deason - ExxonMobil

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8-Hour Ozone Discussion Items

• Issue Background
• HGAs Classification Timing
• Ozone Source Mix
• Planning Cycle
• Questions Answers

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EPA 8-Hour Ozone Standard

• EPA performed mandatory 5-year review in 1997
• 8-hour standard is more stringent than the 1-hour
• April 15, 2004 EPA designated classified HGA as
  8-hour nonattainment effective June 15, 2004
• Same 8-County area as before
• State must submit 8-hour SIPs June 15, 2007
• Attainment Deadline for Houston June 15, 2010
• Classification - Moderate (granted 6 years after
  designation to meet the standard - clock begins
  June 15, 2004)
• Controls must be in place before the ozone season
  of 2009
• Only four areas of the country given deadlines
  beyond 2010
• All in California

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8-Hour Implementation IssuesAttainment
Classifications and Deadlines

• 8-Hour attainment classifications set by
  monitored 8-hour ozone design value
• Classification table provides statutory number of
  years allowed for attainment
• 2010 Compliance Deadline for Houston area set in
  April , 2004 EPA Rule

Houston-Galveston-Brazoria (0.102 ppm)
93 of the 8-Hour Subpart 2 non-attainment countie
s (243) fall into these first two classifications
2007
2010
15 CA counties are serious
2013
No counties are in Severe-15
2019
4 CA counties are Severe-17
2021
No counties are in Extreme
2024
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2007 Controlled NOx Emissions About Equally
Balanced Among Industrial , On-Road, and Off-Road
Sunlight

• Little or no wind
• High temperatures
• Clear skies

OXYGEN
Ground Level Ozone (O3) Formation
Volatile Organic Compounds (VOC)
Nitrogen Oxides (NOx)
Sources Houston Regional Monitoring
and Business Coalition for Clean Air
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Keys to Success

• Continued advancement in technology cost
  effectiveness across all source types
• Acceleration of Federal program benefits
  (Fuels/Engines, Transport and Regional Haze
  rules) to 2009, or
• Significant new local controls that are
  available, technically feasible and
  cost-effective by 2Q09
• Continued need for TERP-2 funding post 2007

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8-Hour Ozone - 1 Hour Measures Set the Stage

• Many 8-hour ozone exceedances are driven by
  1-hour exceedances
• 1-hour Measures effectively will work both
• Some 8-hour ozone exceedances occur with NO
  1-hour ozone exceedance
• 1-hour ozone measures reducing continuous
  emissions will reduce 8-hour ozone
• Some 8-hour exceedances may be due to transport

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Summary Statistics of One and Eight-Hour
Exceedances
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Summary Statistics of One and Eight-Hour
Exceedances
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Summary Statistics of One and Eight-Hour
Exceedances
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8-Hour Ozone Schedule
EPA Designates Areas 4/15/04
Attainment Deadline for Houston gt95 of
non-attainment areas nation-wide
TEXAQS II
TX Submits Adopted State Implementation Plan
(by 6/2007)
EPA Finalizes Phase 1 Rule (04/15/ 04)
Attainment Deadlines for Remaining 19 Counties
Nation-wide
Develop SIP Modeling Control Strategies
2007
2004
2005-2006
2010
2013-24
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Outlook for 2005 2006

• 1-hour SIP Measures (NOx Reductions , HRVOC
  Monitoring, and new HRVOC Emission Limits)
  continue to implement
• TEXAQS 2000 Study data analysis continues
• New Science data (TCEQ, TERC, and TARC)
  generation and analysis continues
• Houston modeling improvements continue
• TEXAQS-2 Field work and data analysis informs
  8-hour ozone SIP