# Carbon Monoxide Maintenance Plan Ft Collins
Technical Support Document Emission Inventory

November 26, 

### 2010 Colorado Department of Public Health and Environment Air Pollution Control Division 4300 Cherry Creek Drive South Denver, Colorado 80246Colorado Department ofPublic Health and Envirorunent/ Air Pollution Control Division



# Table ofContents 1. EMISSION INVENTORY METHODOLOGY 1 2. 2008 EMISSION INVENTORy 2 3. 2008 EMISSION INVENTORY SUMMARY 3 4. REFERENCES 3

COMaintenance PlanforFort Collins

- TechnicalSupportDocument, Nov. 26, 2010

- Emission Inventory iiColorado DepartmentofPublic Health and Environment/ Air Pollution Control Division



## 1. Emission Inventory Methodology The Air Pollution Control Division (APCD) developedthe 2008 emission inventory inthe "CarbonMonoxide Maintenance Plan for Ft Collins" using U.S. Environmental Protection Agency (EPA) approved emissions modeling methods, including EPA'sMOVES model and local VMT data for on-road mobile source emissions, EPA's non-road model, local demographic information for area and off-road sources, and reported actual emissions for point sources. The inventory represents average daily winter emissions. TheMOVES and non-road model inputs represent these average daily winter conditions. Heating and wood burning emissions were apportioned from annual emission estimates by heating degree day data from the Western Regional Climate Center. Other source categories were apportioned from annual to daily by dividing by 365. Highway mobile source emissions are from the EPA model MOVES, an emission factor model for predicting gramper mile emissions ofHydrocarbons (HC), CarbonMonoxide (CO), Nitrogen Oxides (NOx), Carbon Dioxide (C02), Particulate Matter (PM), and toxics from cars, trucks, and motorcycles under various conditions. Non-road source emissions are from the EPA Non-Road Model. This model includes the impactof future controls on non-roadengines, which is used in equipment such as lawn and garden equipment and construction equipment.. Area source emissions (including heating, construction, commercial cooking, etc.) are from the 2008 EPA National Emissions Inventory (NEI), grownto 2008 by population growth from data from the State. Formore documentation for these categories, refer to the NEI documentation (EPA, 2008). Wood burning emissions were calculated using local data and EPA AP-42 emission factors.
The MOVES and Non-Road Models and the NEI report emissions for Larimer County as a whole. Emissions were apportioned to the AttainmentArea using geographical information system (GIS) techniques, usingpopulation, VMTand land area. Under Air Quality Control Commission Regulation No.3, the APCD requires any source that emitstwo tons per year orgreater to submit an Air PollutantEmissionNotice (APEN) (APCD, 2008). This means that sources that emit less than two tons per year are not necessarily accounted for in an emissions inventory. Thepoint source emissions for Ft Collins were obtained from this tracking system. The emission estimates are made using a variety ofmethodologies. Data from source-specific emission tests, or continuous emission monitors are preferable, but not always available. The EPA has developed a variety ofemission factors to estimate emissions as well. Emission factors are frequently the best oronly method available for estimating emissions.

COMaintenance PlanforFort Col/ins

- TechnicalSupportDocument, Nov. 26, 2010

- Emission Inventory 1Colorado Department ofPublic Health and Environment/ Air Pollution Control Division 

## 2. 2008 Emission Inventory This sectionpresents the 2008 emission inventory for the maintenanceplan. 

### Table 

### 1. 2008 CARBON MONOXIDE Emission Inventory (tons perday).**~nventory** Summary CO (TonslDay: HELIPORT 0.009 Commercial Cooking 0.041 Fuel Combustion 0.428 Non-Road 14.161 Structure Fires 0.026 WoodburninQ 7.642 HiQhway Vehicles 64.624 BioQenic 0.275 Railroads 0.006 Point Sources 0.503 

### TOTAL 87.715**~Point** Sources 

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--­ - - t" - - - -­ l _. - _. - - 1 . J 0030 AVAGO TECHNOLOGIES US, INC. 0.03 0011 COLORADO STATE UNIV CSU FACILITY SVCS 0.12 0032 POUDRE VALLEY HOSP 0.01 0060 ANHEUSER BUSCH INC 0.06 0068 ALLNUn FUNERAL SERVICE, INC. 0.00 0073 CITY OF FORT COLLINS DRAKE WATER RECLAMA 0.01 k>107 FOOTHILLS SQUARE 0.00 0331 CITY OF FORT COLLINS STREETS DEPT 0.00 0387 GOES FUNERAL CARE & CREMATORY 0.00 0390 NEW BELGIUM BREWING COMPANY, INC. 0.01 0400 LAFARGE DBA LAFARGE WEST, INC. 0.25 0428 INTEL CORPORATION - FT COLLINS 0.01 

### TOTAL 0.50

COMaintenance Plan/orFort Collins

- TechnicalSupport Document, Nov. 26, 2010

- Emission Inventory 2Colorado Department ofPublic Health and Environment/ AirPollution Control Division


## 3. 2008 Emission Inventory Summary This sectionpresents the 2008 emission inventory summary for the maintenance plan. 

### Table 2. 2008 CARBON MONOXIDE Emission Inventory Summary (tons perday).

Emission Inventory Summary CO (tid) HELIPORT 0.009 Commercial Cooking 0.041 Fuel Combustion 0.428 Non-Road 14.161 Structure Fires 0.026 WoodburninQ 7.642 Highway Vehicles 64.624 Biogenic 0.275 Railroads 0.006 Point Sources 0.50 

### TOTAL 87.715



## 4. References APCD, 2008. Air Quality Control Commission Regulation Number 3. Stationary Source Permitting and Air PollutantEmissionNotice Requirements. 5 CCR 1001-5. < http://www.cdphe.state.co.us/regulations/airregs/100103stationarysourcepermitting.pdf> U.S. EPA, 2010. "2008 National Emissions Inventory Data& Documentation." < http://www.epa.gov/ttn/chie£.net/2008inventory.html >

COMaintenance Plan/orFort Collins

- Technical SupportDocument, Nov. 26, 2010

- Emission Inventory 3