2008 Emissions Inventory for the
Municipality of Juárez, Chihuahua, Mexico
Meeting of the Joint Advisory
Committee for the Improvement of
Air Quality – Paso Del Norte
January 17, 2013
Marty Wolf – Eastern Research Group, Inc.
Arturo Woocay, Ph.D.
Jose Maria Mares Vazquez, Ph.D.
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Inventory Objective & Scope
• Objective – Develop 2008 base year emissions
inventory for ozone modeling
• Scope
– Pollutants: NOx, SO2, VOC, CO, PM10, PM2.5
– Source types: point, area, on-road motor
vehicle, nonroad mobile, biogenic
– Inventory domain: Municipality of Juárez
– Spatial resolution: Municipality-level
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Inventory Objective with Contractors
• Working with Mexico-based contractors.
• Developing skills and capacity for Mexico’s
engineers to develop emissions inventories.
• Importance of having skilled and
experienced engineers working in the field
and teaching skills to students attending the
local universities.
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Phase I
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Completed in August 2011
Includes area, on-road, nonroad, and biogenic sources
Point sources not included – focus of Phase II
Area sources (fuel combustion, evaporative, fires, other)
On-road motor vehicles
Nonroad mobile sources (aircrafts, locomotives, and
construction and agricultural equipment)
• Biogenic sources (vegetation VOC and soil NOx)
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Phase II
(currently underway)
• 2008 point source emissions inventory provided by
SEMARNAT with 182 point sources
• Focus will be on QA of SEMARNAT inventory
• Geographic coordinates check for 45 point sources
• QA of COA data
– Largest emitters
– Pollutant inconsistencies
– Comparison of input material consumption with reported
emissions
– Stack parameters
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Phase II –
Point Source QA
• EPA and TCEQ require contractors to QA data
• Inventory development is an iterative process in which
inventory data is constantly reviewed and improved
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Phase II –
Geographic Coordinate Check
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Phase II –
QA of COA data
• Largest emitters
• Facilities with “questionable” data
– No reported emissions
– Controlled emissions are greater than uncontrolled emissions
– Reported paint, solvent, or other evaporative input materials, but
no process VOC emissions
– Reported natural gas fuel use, but only reported PM emissions
without NOx or CO emissions
– Reported natural gas fuel use, but reported high PM combustion
emissions
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Questions?
Martinus (Marty) E. Wolf
Eastern Research Group, Inc. (ERG)
10860 Gold Center Drive, Suite 275
Rancho Cordova, CA 95670 USA
916-635-6594
Marty.Wolf@erg.com
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