State Implementation Plan (SIP) Development Process

Presentation to:

Centralina Council of Governments

Donnie Redmond

July 13, 2005

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Summary

• What are the air quality issues?

• How do they affect Centralina?

• What is being done about SIP?

• What do you need to remember from this presentation?

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What are the air quality issues?

• Federal Clean Air Act– Ozone– Fine particles (PM2.5)– Carbon monoxide– Greenhouse gases

• Ozone is the pollutant of primary concern– Entire metro area is included

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How does it affect Centralina?

• Designation as “nonattainment”– New Source Review (NSR)– Transportation conformity– State Implementation Plan (SIP)– Awareness of health issues

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NC 8-hr Ozone Nonattainment Areas

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What is being done about SIP?

• Attainment demonstration– Essentially, a modeling exercise to demonstrate

that the State has a valid plan to attain the standard

– I.e., computer projection of future air quality

• Redesignation request– Separate process undertaken once local field

monitors show standards have been met– I.e., actual measurement of current air

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Attainment Demonstration

• Why is it important?– Determine whether we have to add more

environmental programs to meet the Federal standards

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Attainment Demonstration

• How is it going?– Ozone is measured in the summer– Goal is <85ppm in ’09

(Disclaimers on next page)

Measured 100 ppm ‘03

Measured 94 ppm ‘04

Modeled 84 ppm ‘09

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Attainment Demonstration

• Disclaimers– EPA final guidance is not yet available• Calculation method may change• “Best guess”• Conservative (I.e., “worst” value)

– Still checking for errors/updates in our inputs

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Attainment Demonstration• What does it mean?– It looks like we will be able to show “attainment”

of the Federal ozone standard with the air pollution programs that are already planned• Federal control measures

– Cleaner vehicles

– Cleaner fuels

– NOx SIP Call/Clean Air Interstate Rule

• State control measures– Better auto emissions testing procedure

– Expanded auto emissions testing

– Clean Smokestacks Act

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Attainment Demonstration Timeline

• Summer 2005: Modeling results

• Fall 2005: Strategies (if needed)

• Spring 2006: Public hearings

• Fall 2006: Environmental Management Commission (EMC) approval

• Early 2007: Legislative review

• June 2007: Due to EPA

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Redesignation Request

• Process that DAQ will undertake when actual measurement of the air shows it meets the Federal standard

• Why is it important?– Remove “nonattainment” label– Remove new source review (NSR)

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AQ Monitor Network Overview

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Current Ozone Values(Standard is less than 85 ppm)

Monitor 2001-2003

average

2002-2004

average

County Line 98 92

Enochville 99 91

Rockwell 100 94

Garinger 96 91

Crouse 92 86

Monroe 88 85

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Future: Potential Developments

• When we get through this current process, we cannot declare victory and go home …

• Growth assumptions may change

• Science may change– EPA is now reviewing ozone and PM

standards• Sept 2006: Fine particles• Dec 2007: Ozone

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Local Measures• Focus on major emission sources• Reduction in vehicle miles traveled• Nonroad engines– Generators, construction equipment,

lawnmowers, etc.

• Fleet turnover• Alternative fuels• Diesel retrofit, anti-idling policies• Growth management• Episodic controls

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What do you need to take away from this …

• We think we will be able to show that our air will meet standards in ’09 with our existing environmental programs

• The measured ozone levels are decreasing, but still above the standard

• Be happy, but remember things may change in the future

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For additional info

• Donnie Redmond– Asst. Chief for Planning– 919-733-1481– Donnie.Redmond@ncmail.net

• DAQ website– www.ncair.org