# EPA-420-R-10-007

February 2010 

# Assessment and Standards Division

Office of Transportation and Air Quality

U.S. Environmental Protection Agency

Prepared for EPA by

ICF International

and

T&B Systems

EPA Contract No. EP-C-06-094

Work Assignment No. 3-6 

# Development and Evaluation of an Air

**Quality Modeling Approach for Lead**

**Emissions from Piston**

- **Engine Aircraft**

**Operating on Leaded Aviation Gasoline**

**Appendix C**

**Winter 2009 Model**

- **to**

- **Monitor Results**

NOTICE

This technical report does not necessarily represent final EPA decisions or

positions. It is intended to present technical analysis of issues using data

that are currently available. The purpose in the release of such reports is to

facilitate the exchange of technical information and to inform the public of

technical developments.

# ii 

# T

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# .Clarkson - March 14 Lead Concentration by Source0501001502002503003509 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8Time of Day

Lead Concentration (ng/m3)S RunupS Taxi SAreaS TakeoffS LandingS ClimbS ApproachM Taxi SM TakeoffM Taxi NM RunupM LandingM ClimbM ApproachH Taxi SH Taxi NH Landing SH Landing NH ClimbLightPointOffroadHeavyBackgroundFigure C-1. Clarkson site – March 14 lead concentration by source.C-1East Tarmac - March 14 Lead Concentrations (ng/m3)0501001502002509 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8Time of Day

Lead Concentration (ng/m3)S RunupAreaS Taxi SS TakeoffS LandingS ClimbS ApproachPointOfRoadM Taxi SM Taxi NM TakeoffM RunupM LandingM ClimbM ApproachLightH Taxi SH Taxi NH Landing SH Landing NH ClimbHeavyBackgroundFigure C-2. East Tarmac site – March 14 lead concentrations (ng/m3).C-2Clarkson - March 28 Lead Concentrations by Source (ng/m3)01002003004005006009 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8Time of Day

Lead Concentration (ng/m3)S RunupAreaS Taxi SS TakeoffS LandingS ClimbS ApproachPointOffroadM ApproachM Taxi SM Taxi NM TakeoffM RunupM LandingM ClimbLightHeavyH Taxi SH Taxi NH Landing SH Landing NH ClimbBackgroundFigure C-3. Clarkson site – March 28 lead concentrations by source (ng/m3).C-3East Tarmac - March 28 Lead Concentrations (ng/m3)0501001502002503003509 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8Time of Day

Lead Concentration (ng/m3)S RunupAreaS Taxi SS TakeoffS LandingS ClimbS ApproachPointOfRoadM Taxi SA ApproachM Taxi NM RunupM LandingM ClimbM ApproachLightH Taxi SH Taxi NH Landing SH Landing NH ClimbHeavyBackgroundFigure C-4. East Tarmac site – March 28 lead concentrations (ng/m3).C-4Clarkson - March 29 Lead Concentrations by Source (ng/m3)0501001502002503003504009 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8Time of Day

Lead Concentration (ng/m3)S RunupAreaS Taxi SS TakeoffS LandingS ClimbS ApproachPointOffroadM Taxi SM Taxi NM ApproachM TakeoffM RunupM LandingM ClimbLightHeavyH Taxi SH Taxi NH Landing SH Landing NH ClimbBackgroundFigure C-5. Clarkson site – March 29 lead concentrations by source (ng/m3).C-5East Tarmac - March 29 Lead Concentrations (ng/m3)0501001502002503003504004505009 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8Time of Day

Lead Concentration (ng/m3)S RunupAreaS Taxi SS TakeoffS LandingS ClimbS ApproachPointOfRoadM Taxi SM ApproachM Taxi NM RunupM LandingM ClimbM ApproachLightH Taxi SH Taxi NH Landing SH Landing NH ClimbHeavyBackgroundFigure C-6. East Tarmac site – March 29 lead concentrations (ng/m3).C-6Figure C-7. All sources – March 14–15, 2009.C-7Figure C-8. All sources – March 28–29, 2009.C-8Figure C-9. All sources – March 29–30, 2009.C-9C-10THIS PAGE INTENTIONALLY LEFT BLANK.