2008 Emissions Inventory for the Municipality of Juárez,

Chihuahua, Mexico

January 23, 2014Presented by Marty Wolf, ERG

Meeting of the Joint Advisory Committee for the Improvement of Air Quality – Paso Del Norte

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Inventory Objective & Scope

Objective – Develop 2008 base year emissions inventory for ozone modeling

Scope– Pollutants – NOx, SO2, VOC, CO, PM10, and PM2.5

– Source types – point, area, on-road motor vehicle, nonroad mobile, biogenic

– Inventory domain – municipality of Juárez– Annual resolution – annual (tpy)– Spatial resolution – municipality-level

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Source Types

Point sources – federal and state jurisdiction sources

Area sources – fuel combustion, evaporative, fires, miscellaneous

On-road motor vehicles Nonroad mobile sources – aircraft,

locomotives, and construction and agricultural equipment

Biogenic sources – vegetation VOC and soil NOx

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Inventory Objective - Contractors

Objective – Work with Mexico-based contractors– ERG – lead technical contractor– UT – project prime contractor– Juárez-based subcontractors (TransEngineering,

ITCJ, Arturo Woocay Consulting, Mares Vazquez Consulting)

Accurate “on the ground” data collection and verification

Develops skills and capacity for future emission inventories

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Inventory Development

Phase I – completed August 2011– Area sources– On-road motor vehicles– Nonroad mobile sources– Biogenic sources

Phase II – completed June 2013– Point sources

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Point Sources

Based upon 2008 Mexico NEI Focus on QA of reported emissions Emissions provided for 182 sources – 89

federal, 87 state, 6 duplicate Emissions primarily from federal

jurisdiction sources, except for VOC Largest sectors – electricity and

cement/lime Secondary sectors – petroleum,

petrochemical, automotive, chemical

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Point Source – Spatial QA

Emphasis on ozone modeling – spatial location is important

Identified 45 facilities for field spatial check– 26 facilities with coordinates outside

municipality– 8 facilities with coordinates in residential areas– 11 facilities with significant emissions (i.e.,

“high emitters”) Field survey check conducted by Arturo

Woocay Consulting and Mares Vazquez Consulting

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Field Check Results – Before and After QA

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Point Source – Emissions QA

Fuel consumption – should have combustion pollutants

Solvent usage – should have VOC Total PM ≥ PM10 ≥ PM2.5

Industry type should match reported emissions– Gasoline terminals – VOC– Cement and concrete plants – PM10 and PM2.5

Facilities with similar fuel consumption should have similar emissions

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Area Sources

Local Data– Industry – natural gas and LPG suppliers,

PEMEX– Government – General Directorate of Public

Works, Fire Department, SAGARPA, U.S. Bureau of Transportation Statistics, Junta Municipal de Agua y Saneamiento (JMAS)

Studies – San Luis Río Colorado, Sonora consumer

products survey study– Brick kiln study

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Area Sources – Results –NOx (tpy)

636

112

71

61

48

3429

90Industrial ResidualIndustrial LPGResidential LPGOpen Waste BurningIndustrial Distil-lateTransportation LPGBrick KilnsAll Other

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On-Road Motor Vehicles

General Methodology– Based on methodology initially developed for

1999 Mexico NEI– Road link/segment VKT developed using traffic

and congestion modeling– MOBILE6-Mexico emission factors developed

for each link/segment (by season, speed, ambient temperature)

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On-Road Motor Vehicles

Traffic and Congestion Modeling– Urban area of Juárez– Federal Highway 2 (towards state of Sonora)– Federal Highway 45 (towards city of

Chihuahua)– Road network, trip generation rates, and

demographic and socio-economic information

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On-Road Motor Vehicles – Road Network

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On-Road Motor Vehicles – Traffic Volumes

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On-Road Motor Vehicles – Results – NOx (tpy)

4,960

1,381

983

267 27 6 2

HDDVLDGTLDGVHDGVMCLDDTLDDV

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On-Road Motor Vehicles – Results – VOC (tpy)

3,794

2,875

560288 98 4

2

LDGVLDGTHDDVHDGVMCLDDTLDDV

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Nonroad Mobile Sources

Aircraft LTOs by airframe make and model – González International Airport

Locomotive fuel use – Ferromex Agricultural and construction equipment –

NONROAD-Mexico model

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Biogenic Sources

Biogenic sources – vegetation VOC and soil NOx

Estimated using GloBEIS model (Version 3.1) and Mexico-specific land use data set

Land use data from INEGI and IMIP Meteorological data from NCDC

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Overall Results – NOx

(tpy)

6,223

1,080

7,627

4,937

1,720

PointAreaOn-RoadNonroadBiogenics

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Overall Results – VOC (tpy)

2,574

24,895

7,621

5303,039

PointAreaOn-RoadNonroadBiogenics

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Summary of Results (tpy)

NA = not applicable; NE = not estimated

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Areas of Potential Improvement

Review of point source COAs Addition of PM10/PM2.5 sources – on-road

motor vehicles, paved/unpaved roads, windblown dust, construction dust

Migration from MOBILE6 to MOVES More frequent inventory updates

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Acknowledgements

TCEQ – Stephen Niemeyer, Ross Pumfrey, Victor Valenzuela, Gina Posada

UT – David Sullivan SEMARNAT – David Alejandro Parra

Romero, Hugo Landa Fonseca, Gerardo Tarin

Subcontractors – TransEngineering, ITCJ, Arturo Woocay, Jose Maria Mares

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Gracias por su atención

Questions or comments?

Marty WolfEastern Research Group, Inc. (ERG)Sacramento, CA916-635-6594marty.wolf@erg.com