Carbon Monoxide Maintenance Plan 

Colorado Springs

Supplemental Technical Support Document 

Emission Inventory 

August 15, 2011 

Colorado Department of Public Health and Environment 

Air Pollution Control Division 

4300 Cherry Creek Drive South 

Denver, Colorado 80246 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

Carbon Monoxide Attainment/Maintenance Plan for Colorado Springs – Supplemental Technical Support Document 

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Table of Contents 

1. BACKGROUND .................................................................................................................................................... 1

2. EMISSION INVENTORY METHODOLOGY .................................................................................................. 1

3. 2007 EMISSION INVENTORY ........................................................................................................................... 2

4. 2007 NON O&G POINT SOURCE EMISSION INVENTORY ....................................................................... 3

5. REFERENCES ...................................................................................................................................................... 4

 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

1. Background 

In 2009, the Air Pollution Control Division (APCD) developed a Technical Support Document 

(TSD) for the Colorado Springs Carbon Monoxide Maintenance Area, which was adopted by the 

Colorado Air Quality Control Commission (CAQCC) on December 17, 2009, and submitted to the 

U.S. Environmental Protection Agency (EPA) on March 31, 2010. The original TSD provided an 

annual emission inventory for carbon monoxide in Colorado Springs for the year 2007. 

This document (Supplemental TSD), submitted to the EPA on August 15, 2011, serves as a 

supplement to the original TSD. The emission inventory in this Supplemental TSD represents 

2007 average daily winter conditions as calculated by the APCD in 2009 and provided in the 

Revised Carbon Monoxide Attainment/Maintenance Plan for the Colorado Springs 

Attainment/Maintenance Area (adopted by the CAQCC on December 17, 2009, and submitted to 

the EPA on March 31, 2010). The APCD calculated the emission inventory for average daily 

winter conditions because winter weekdays traditionally provide the highest levels of carbon 

monoxide emissions. 

2. Emission Inventory Methodology 

To calculate the emission inventory for the Revised Carbon Monoxide Attainment/Maintenance 

Plan (shown below), the APCD used the EPA’s MOBILE6 model and local vehicle miles traveled 

(VMT) data for on-road mobile source emissions, the EPA’s non-road model, local demographic 

information for area and off-road sources, and reported actual emissions for point sources. 

MOBILE6 and non-road model inputs were used to represent 2007 average daily winter 

conditions, and as such, were calculated differently than emission inventories in the original TSD, 

which used inputs to reflect average annual conditions. Heating and woodburning emissions were 

apportioned from annual emissions estimates by heating degree data from the Western Regional 

Climate Center. Other source categories, including non oil and gas (O&G) point sources, aircraft, 

commercial cooking and railroads, were apportioned by taking the annual emission totals provided 

in the original TSD and dividing them by 365. 

1

Carbon Monoxide Attainment/Maintenance Plan for Colorado Springs – Supplemental Technical Support Document 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

 

3. 2007 Emission Inventory 

This section presents the 2007 emission inventory for (and included in) the maintenance plan. 

 

Table 1. 2007 CARBON MONOXIDE Emission Inventory (Tons/Winter Day). 

Inventory Summary Source Category CO (Tons/Winter Day)

 Aircraft 2.92

 Biogenic 0.00

 Commercial Cooking 0.19

 Fuel Combustion 1.62

Highway Vehicles 319.16

 Non O&G Point Sources 2.27

 Non-Road 40.45

 Railroads 0.21

 Structure Fires 0.09

 Woodburning 140.49

 TOTAL 507.39

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Carbon Monoxide Attainment/Maintenance Plan for Colorado Springs – Supplemental Technical Support Document 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

4. 2007 Non O&G Point Source Emission tory

3

 In

s

ven

Source   Ton /Year Tons/Day

COLORADO SPRINGS UTILITIES‐BIRDSALL PLT  15.9 0.04 

COLORADO SPRINGS UTILITIES‐DRAKE PLT 253 0.69 

U.S. AIR FORCE ACADEMY  24.8 0.07 

COLORADO SPRINGS UTILITIES LAS VEGAS WWT  4.0 0.01 

TRANSIT MIX CONCRETE   1.8 0.00 

FORT CARSON USARMY (DECAM)   78.7 0.22 

PETERSON AFB 21CES CEV   18.3 0.05 

LAFARGE WEST, INC. ‐FILLMORE   93.0 0.25 

COLORADO SPRINGS MEMORIAL HOSPITAL  12.0 0.03 

BROADMOOR HOTEL INC   2.8 0.01 

W FORGE HOLDINGS, INC   19.1 0.05 

AGILENT TECHNOLOGIES   7.8 0.02 

ATMELCORP   20.8 0.06 

TRANSIT MIX CONCRETE CO   0.0 0.00 

IR SECURITY AND SAFETY   .2 0.00 

OGLEBAY NORTON INDUSTRIAL SANDS   4.4 0.01 

PIKES PEAK COMMUNITY COLLEGE   2.6 0.01 

PENROSE COMMUNITY HOSPITAL   2.1 0.01 

PENROSE HOSP   8.8 0.02 

CHEYENNE MTN ZOO   .1 0.00 

ST FRANCIS PENROSE HOSP SYS   1.3 0.00 

COLORADO COLLEGE   4.5 0.01 

EVERGREEN PARK MAUSOLEUM ASSOCIATION 0.0 0.00 

INTEL CORP (WAS ROCKWELL & UNITED TECH)  25.5 0.07 

LAFARGE WEST ‐VOLLMER CONCRETE PLANT  0.0 0.00 

SCHRIEVER AFB USAF  4.5 0.01 

VILLA SAN JOSE APT BLDG   0.0 0.00 

PETE LIEN & SONS DBA TRANS‐COLO CONCRETE .3 0.00 

HEWLETT‐PACKARD CORPORATION  .6 0.00 

MOBILE ENERGY PRODUCTS   27.5 0.08 

TEGRANT DIVERSIFIED BRANDS, INC.   3.8  0.01 

BURTS AUTO SUPPLY   0.0  0.00 

RAMTRON INTL CORP   0.1  0.00 

SCHMIDT CONSTRUCTION CO.‐DELTA DRIVE FAC  28.0 0.08 

FOUNTAIN LANDFILL   31.0 0.08 

AEROFLEX UTMC MICROELECTRONICS   0.2  0.00 

SINTON DAIRY FOODS CO   1.9  0.01 

SNO WHITE LINEN & UNIFORM RENTAL INC  0.5  0.00 

NUSTAR LOGISTICS‐COLO SPGS TERMINAL  6.5  0.02 

CHEYENNE MOUNTAIN AIR FORCE STATION  3.3  0.01 

COLORADO SPRINGS MORTUARY & CREMATIONS  0.1  0.00 

VITESSE SEMICONDUCTOR CORP   3.0  0.01 

CAPPADONA'S FAMILY SVCES   0.2  0.00 

MCI TELECOMMUNICATIONS CORP   0.1  0.00 

KLK INC. ‐IOWA AVE   1.1  0.00 

ROCKY MOUNTAIN PREMIX   2.1  0.01 

U.S. CORP OF ENGINEERS ‐TSAlONRA   0.2  0.00 

TRANSIT MIX CONCRETE CO ‐EAST PLANT  1.6  0.00 

Carbon Monoxide Attainment/Maintenance Plan for Colorado Springs – Supplemental Technical Support Document 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

Carbon Monoxide Attainment/Maintenance Plan for Colorado Springs – Supplemental Technical Support Document 

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CAPPADONA FUNERAL HOME   0.2  0.00 

EL PASO CNTY ‐CENTRAL HEATING & COOLING  11.4  0.03 

ROCKY MOUNTAIN MATERIALS & ASPHALT INC  80.0  0.22 

ROCKY MOUNTAIN MATERIALS & ASPHALT INC  17.1  0.05 

DPIX, LLC  .03 0.00 

Grand TOTAL 2.25

5. References 

APCD, 2008. Air Quality Control Commission Regulation Number 3. Stationary Source 

Permitting and Air Pollutant Emission Notice Requirements. 5 CCR 1001-5. 

< http://www.cdphe.state.co.us/regulations/airregs/100103stationarysourcepermitting.pdf > 

U.S. EPA, 2008. “2002 National Emissions Inventory Data & Documentation.” 

< http://www.epa.gov/ttn/chief/net/2002inventory.html#documentation >