2008 Emissions Inventory for the Municipality of Juárez,
Chihuahua, MexicoJanuary 23, 2014
Presented 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
4834
2990 Industrial
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
983267 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 atenciónQuestions or comments?
Marty WolfEastern Research Group, Inc. (ERG)Sacramento, [email protected]