Attachment 12

2011 Emissions Inventory

Calculation Methodology 

for

NOx, CO, and VOC

Draft

June 2015
Table of Contents

Point Sources Emission Estimation Methodology.............................................................................. 2

Onroad Sources Emission Estimation Methodology...........................................................................4

Nonroad Sources Emission Estimation Methodology...........................................................................6

Nonpoint Sources Emission Estimation Methodology........................................................................... 12

Industrial Distillate Oil Combustion................................................................................................................................ 12

Industrial Residual Oil Combustion ................................................................................................................................ 15

Industrial Natural Gas Combustion ................................................................................................................................. 18

Industrial Liquified Petroleum Gas (LPG) Combustion .................................................................................................. 21

Commercial Distillate Oil Combustion ........................................................................................................................... 24

Commercial Natural Gas Combustion............................................................................................................................. 27

Commercial Liquified Petroleum Gas (LPG) Combustion.............................................................................................. 29

Commercial Kerosene Combustion ................................................................................................................................. 32

Residential Distillate Oil Combustion ............................................................................................................................. 35

Residential Natural Gas Combustion............................................................................................................................... 38

Residential Liquified Petroleum Gas (LPG) Combustion ............................................................................................... 40

Residential Kerosene Combustion................................................................................................................................... 43

Residential Wood Combustion ........................................................................................................................................ 46

Bakeries........................................................................................................................................................................... 49

Wineries (Red Wine)....................................................................................................................................................... 50

Wineries (White Wine).................................................................................................................................................... 51

Breweries......................................................................................................................................................................... 52

Architectural Coatings..................................................................................................................................................... 54

Auto Refinishing.............................................................................................................................................................. 55

Traffic Paints................................................................................................................................................................... 57

Industrial Surface Coating Factory Finished Wood......................................................................................................... 59

Industrial Surface Coating Wood Furniture & Fixtures................................................................................................... 61

Industrial Surface Coating Metal Furniture & Fixtures................................................................................................... 63

Industrial Surface Coating Paper, Film and Foil ............................................................................................................. 65

Industrial Surface Coating Metal Can and Containers..................................................................................................... 66

Industrial Surface Coating Sheet, Strip, & Coil............................................................................................................... 68

Industrial Surface Coating Machinery & Equipment ...................................................................................................... 70

Industrial Surface Coating Appliances ............................................................................................................................ 72

Industrial Surface Coating Electronic and Other Electrical............................................................................................. 73

Industrial Surface Coating Motor Vehicles ..................................................................................................................... 75

Industrial Surface Coating Aircraft.................................................................................................................................. 77

Industrial Surface Coating Marine Coatings.................................................................................................................... 79

Industrial Surface Coating Railroad Coatings ................................................................................................................. 81

Industrial Surface Coating, Maintenance.........................................................................................................................83

Other Special Purpose Coating........................................................................................................................................85

Degreasing.......................................................................................................................................................................86

Dry Cleaning ...................................................................................................................................................................88

Graphic Arts ................................................................................................................................................................... 90

C&C Cosmetics and Toiletries...................................................................................................................................... .91

C&C Household Cleaning Products.............................................................................................................................. 92

C&C Automotive Aftermarket Products ....................................................................................................................... 93

C&C Coatings and Related Products............................................................................................................................. 94

C&C Adhesives and Sealants........................................................................................................................................ 95

C&C FIFRA Regulated Products .................................................................................................................................. 96

C&C Miscellaneous Products (not otherwise covered) ................................................................................................. 97

Pesticide Application, Agricultural................................................................................................................................ 98

Cutback Asphalt Application......................................................................................................................................... 100

Emulsified Asphalt Application .................................................................................................................................... 102

Portable Fuel Containers - Residential .......................................................................................................................... 104

Portable Fuel Containers - Commercial......................................................................................................................... 109

Gasoline Distribution Stage I; Gasoline Service Station Submerged Filling................................................................. 115

Gasoline Distribution Stage I; Gasoline Service Station Splash Filling .........................................................................117
Gasoline Distribution Stage I; Gasoline Service Station Balanced Submerged Filling.................................................119

Gasoline Distribution Stage I; Bulk Terminals all Evaporative Losses.........................................................................121

Gasoline Distribution Stage I; Underground Storage Tank, Breathing, and Emptying .................................................122

Stage II Gasoline Refueling Uncontrolled Displacement Losses ..................................................................................123

Stage II Gasoline Refueling Controlled Displacement Losses ......................................................................................125

Stage II Gasoline Refueling Controlled Displacement Spillage ....................................................................................127

Gasoline Distribution Stage I; Tank Trucks in Transit..................................................................................................129

Aviation Gasoline Distribution: Stage I.........................................................................................................................130

Aviation Gasoline Aircraft Refueling: Stage II 132

Land Clearing (Prescribed Burning)..............................................................................................................................134

On-Site Incineration, ....................................................................................................................................................136

Municipal Solid Waste Landfills...................................................................................................................................138

Public Owned Treatment Works (POTW).....................................................................................................................139

Structural Fires ..............................................................................................................................................................140

Vehicle Fires..................................................................................................................................................................142

Cremation – Human..................................................................................................................................................144

Cremation – Animal ......................................................................................................................................................145

Page | 2

Point Sources Emission Estimation Methodology:

The base-year point source emissions inventory presented in this document is based on the 2011

Shelby County, Tennessee Emissions Inventory Questionnaire (EIQ) which is an annual emissions 

inventory survey conducted by the Department. Although all of the criteria pollutants and a large 

number of hazardous air pollutants are inventoried in the EIQ, only oxides of nitrogen (NOx), 

carbon monoxide (CO), and volatile organic compounds (VOC) are reported here since they are the 

precursor pollutants involved in ozone formation. 

The EIQ process is as follows, an EIQ containing data submitted the previous year is sent to the 

designated facility contact via e-mail. All facilities receiving the EIQ are required to update the data 

and return the information to the Department in an electronic format accompanied by a hardcopy 

printout. 

While emissions are reported in the EIQ on an annual basis, facilities are required to account for 

summer operations by providing the annual throughput, the seasonal throughput percentage, and the 

weekly operations schedule. In addition, it is understood that summer season percentage constitutes 

25% of the year. Taking all of these factors into account, typical summer/ozone season day 

emissions are determined in tons per day using the following equation,

Summer Season Day Emissions (tons per day) = ((Annual Throughput x SAF)/ (WAF x Weeks per Year))

where

SAF = Seasonal Throughput Percentage/ Percentage of Months Associated with Summer

WAF = Weekly Activity Factor (The Number of Days of operation per Week)

Typical summer/ozone season day emissions point estimates of NOx, CO, and VOC are calculated 

on a ton per day (tpd) basis and presented below in Table PS1 

Table PS1: Point Source Base-year Summer/Ozone Season Day Emissions of NOx, CO, and VOC 

. 

Shelby County Tennessee 2011 Point Source Emission Inventory

Source 

ID Company Name 

Annual Emissions (tpy)

Summer 

O3 

Through

put 

Ozone Season Day 

Emissions (tpd)

NOx CO VOC % NOx CO VOC

00036 ConAgra Foods, Inc. 4.52 3.80 5.09 25.00 0.04 0.05 0.02

00038 Archer Daniels Midland Co. Memphis 18.51 15.55 159.86 25.00 0.05 0.04 0.44

00045 Cargill Corn Milling* 566.85 1143.5

7

1202.9

2 25.00 1.56 3.14 3.30

00050 Wm Barr 0.00 0.00 13.94 25.00 0.00 0.00 0.05

00055 Buckeye Technologies Inc. 38.59 11.30 1.91 25.00 1.31 0.39 0.03

00083 UTC - Climate, Controls, and Security 1.62 1.28 21.89 33.00 0.01 0.00 0.12

00094 Johnson Bryce Inc. 1.55 0.96 45.91 25.00 0.00 0.00 0.13

00097 DuPont Memphis Plant 905.24 286.85 57.09 25.00 2.49 0.79 0.16
Page | 3

Shelby County Tennessee 2011 Point Source Emission Inventory

Source 

ID Company Name 

Annual Emissions (tpy)

Summer 

O3 

Through

put 

Ozone Season Day 

Emissions (tpd)

NOx CO VOC % NOx CO VOC

00101 Valero Refining Company - Tennessee, LLC 531.62 211.19 584.74 25.00 1.46 0.58 1.61

00128 Jordan Aluminum Extrusion Company, LLC 0.24 0.20 9.65 28.00 0.00 0.00 0.04

00150 PMC Biogenix, Inc. 182.58 62.55 8.03 25.00 0.94 0.68 0.09

00190 KTG-USA, Inc. 28.70 24.10 31.99 25.00 0.08 0.07 0.09

00205 Fleischmann's Yeast 0.03 0.02 53.28 a365 0.00 0.00 0.28

00274 PENNAKEM, LLC 16.80 10.52 33.66 25.00 0.12 0.07 0.21

00279 Solae, L.L.C. 106.22 151.96 3.89 a365 0.29 0.42 0.01

00290 SONOCO Products Company (Harbor Ave) 0.00 0.00 154.50 25.00 0.00 0.00 0.42

00292 SONOCO Products Company (Ragan St.) 0.00 0.00 3.57 25.00 0.00 0.00 0.01

00300 Blues City Brewery, LLC** 2.42 2.03 0.17 25.00 0.01 0.01 0.00

00347 Memphis Trumbull Asphalt 10.58 31.14 13.19 25.00 0.03 0.09 0.04

00367 Velsicol Chemical Corporation 16.25 12.96 1.34 25.00 0.04 0.04 0.00

00420 The Bryce Company LLC 2.54 0.96 44.23 25.00 0.01 0.00 0.12

00465 St. Jude Children's Research Hospital 10.44 10.36 0.74 25.00 0.07 0.04 0.00

00475 Lucite International, Inc. 57.00 202.19 168.61 25.00 0.16 0.56 0.46

00528 TVA Allen Fossil Plant (ALF)*

2553.2

2

684.12 147.35 24.44 5.44 4.37 0.65

00605 SFI of Tennessee 0.13 0.11 33.77 25.00 0.00 0.00 0.13

00664 FedEx Memphis Air Operations Complex 

(AOC) 62.90 12.78 22.09 25.00 0.97 0.19 0.11

00710 NUCOR Steel Memphis, Inc. 124.89 846.08 59.11 25.00 0.34 2.32 0.16

00819 Arkema, Inc. 100.75 16.37 160.89 28.06 2.89 0.58 0.62

00904 American Yeast Corporation, Tennessee** 1.66 2.10 61.27 25.00 0.00 0.01 0.17

Total 5345.8

4

3745.0

5

3104.6

6 18.30 14.43 9.49

* - CAMD data is used to reprsent ozone season day emission values except for VOC and CO

** - The emission inventory was developed by the SCHD-PCS-Air Planning Branch using information provided by the source in a 

previous emissions inventory in combination with 2011 emissions data provided to SCHD-PCS Air Billing.

A MS-Excel workbook, titled “Shelby_County_2011_Point_Source Emission Inventory 

Summary”, contains the methodologies and results used to develop the Point Source emissions 

inventory founded in Attachment 1 of this document.
Page | 4

On-road Mobile Sources Emission Estimation Methogology:

The on-road mobile source emissions inventory was developed with EPA’s Motor Vehicle 

Emissions Simulator model (MOVES2014), using input data provided by the Memphis area 

Metropolitan Planning Organization (MPO). The 2011 base-year on-road mobile inventory was 

developed in accordance with the guidance provided in the document titled, “MOVES2014 

Technical Guidance: Using MOVES to Prepare Emissions Inventories in State Implementation 

Plans and Transportation Conformity, EPA-420-b-15-007”. The vehicle population and the vehicle 

miles traveled (VMT) for Shelby County during the 2011 base year are summarized below in Table 

OR1 and Table OR2,

Table OR1 - Shelby County Tennessee Vehicle Population

Source Type Source Type ID Source Type VMT

Motorcycle 11 14960.02

Passenger Car 21 430119.28

Passenger Truck 31 137966.55

Light Commercial Truck 32 46092.29

Intercity Bus 41 592.73

Transit Bus 42 306.64

School Bus 43 4015.84

Refuse Truck 51 237.92

Single Unit Shorthaul Truck 52 17040.8

Single Unit Longhaul Truck 53 2247.58

Motor Home 54 3956.38

Combination Short-haul Truck 61 3326.07

Combination Long-haul Truck 62 4051.69

Total 664913.78

Table OR2 - 2011 Shelby County Tennessee Daily Vehicle Miles Traveled

YearID HPMSVTypeID yearID HPMS 

BaseYearVMT

2011 10 2011 27,258,439

2011 20 2011 6,511,359,639

2011 30 2011 1,978,792,313

2011 40 2011 33,384,695

2011 50 2011 294,881,722

2011 60 2011 404,485,196

Total 9,250,162,004
Page | 5

Table OR3 summarizes the setting used in the MOVES2014 run specification file.

Table OR3 - 2011 Shelby County, Tennessee On-road Mobile Run Specification for MOVES2014

MOVES2014 Run Specification Parameter Settings

Scale County, Inventory

Time Span

Time aggregation = Hour

Month 7 (July) for summer conditions 

All hours of the day selected

Weekdays only

Geographic Bounds Custom Domain - Shelby County, Tennessee

Vehicles/ Equipment All valid source types, gasoline, diesel, and ethanol

Road Type All road types including off-network

Pollutants and Processes NOx, CO, and VOC 

General Output Units = tons, miles, BTU

Output Emissions By SCC

Advanced Performance None

Table OR4: summarizes the 2011 onroad emissions estimates that were generated by MOVES2014 

for the Shelby County, Tennessee area

Table OR4 – 2011 Shelby County, Tennessee On-road Mobile Emissions Estimates of NOx, CO, and VOC

Year NOx CO VOC

(tpd) (tpd) (tpd)

2011 37.90 167.93 16.1143

A MS-Excel workbook, titled “_2011_Shelby_OnRoad_Emissions_Summary”, contains the 

methodologies and results used to develop the On-road Mobile emissions inventory founded in 

Attachment 9 of this document.
Page | 6

Non-road Mobile Sources Emission Estimation Methodology:

Nonroad mobile sources represent a large diverse set of off-road vehicles and non-stationary 

equipment that typically do not operate on roadways designated for transportation purposes. For the 

purpose of developing emission estimates, nonroad vehicles and equipment are grouped into four 

segments, which are as follows: 1.) non-road equipment, 2.) airport, 3.) commercial marine vessels, 

and 4.) locomotives.

Non-road Equipment -

The majority of non-road mobile emissions are produced by the non-road equipment segment. This 

segment includes, but is not limited to: agricultural equipment, construction equipment, lawn and 

garden equipment, and recreational vehicles, such as, boats, jet-skis, atvs, etc... 

Typical summer/ozone season day emissions estimates, in tons per day, were generated with EPA’s 

NONROAD2008 model. The nonroad model estimates emissions for each specific type of nonroad equipment by multiplying the following input data estimates: 

Equipment population for base year (or base year population grown to a future year), 

distributed by age, power, fuel type, and application; 

Average load factor, expressed as average fraction of available power; 

Available power, in horsepower; 

Activity, in hours of use per year; and 

Emission factor with deterioration and/or new standards. 

The emissions are then temporally and geographically allocated using appropriate allocation 

factors.

NonRoad2008a screenshots are provided below which incorporate the inputs used to run the model.
Page | 7

The above shows the information entered on the NonRoad2008a Options form for the 2011 Shelby 

County Nonroad Model Equipment run for a typical ozone season day.

The above shows the information entered on the NonRoad2008a Period form for the 2011 Shelby 

County Nonroad Model Equipment run.

The above shows the information entered on the NonRoad2008a Region form for the 2011 Shelby 

County Nonroad Model Equipment run.
Page | 8

The above shows the information entered on the NonRoad2008a Sources form for the 2011 

Shelby County Nonroad Model Equipment run. 2011Non-road equipment emissions are 

displayed in Table NRE1 below

Table NRE1 - Shelby County, Tennessee 2011 Non-road Equipment Summer Season Day Emissions 

Category

2011

NOX 

(tpd)

CO 

(tpd)

VOC 

(tpd)

Nonroad Equipment Total 11.44 158.42 12.61

A MS-Excel workbook, titled “2011 Nonroad2008a Model Emissions Estimates”, contains the 

methodologies and results used to develop the Non-road Equipment emissions inventory founded 

in Attachment 5 of this document.
Page | 9

Airport -

Airport emissions are produced by sources, such as, aircraft engines, auxiliary power units, and 

ground support equipment. Nonroad airport emissions estimates were developed by EPA for the 

2011 National Emission Inventory (2011 NEI). The 2011 NEI estimates were determined with the 

Emissions Dispersion Modeling System (EDMS) utilizing Shelby County, Tennessee aircraft 

operations data for both airports and heliports as inputs. 

Typical summer/ozone season day emissions estimates were determined by dividing the annual 

emissions estimates by 365 as follows

Airport Emissions (tons/day) = Airport Emissions (tons)/365 days

The base-year 2011 Airport summer/ozone season day emissions estimates are displayed below in 

Table NRA1

Table NRA1- Shelby County, Tennessee 2011 Airport Summer Season Day Emission Estimates

Category

2011

NOX 

(tpd)

CO 

(tpd)

VOC 

(tpd)

Airport Total 8.69 12.76 2.11

A MS-Excel workbook, titled “2011 Nonroad Airport and GSE Emissions Estimates”, contains the 

methodologies and results used to develop the airport emissions inventory founded in Attachment 8

of this document.
Page | 10

Commercial Marine Vessels -

The commercial marine vessel (CMV) emission inventory was developed from local activity data 

relating to commercial marine vessel traffic operating in the Port of Memphis and on the Mississippi 

River. This traffic tends to mainly involved towboats pushing barges up and down the Mississippi 

River along the western edge of Shelby County, Tennessee which is approximately a distance of 40 

miles. With Mississippi River currents having an average speed of 3-4miles per hour, the downriver 

trip tends to require 5-hours to complete, whereas, the upriver trip tends to require 8-hours to 

complete.

Emission estimates for commercial marine vessels were generated using activity data obtained from 

the Waterborne Commerce of the United States, Calendar Year 2012, which is published by the US 

Corp of Engineers. Technical incites were obtained through discussions with both the US Corp of 

Engineers and local companies involved with commercial marine vessels. These discussions 

focused on things such as, average towboat horsepower, trip times in hours for both upriver and

downriver trips, hoteling times, the number and duration of mid-stream refueling, etc... With the 

aid this information, commercial marine vessel emission estimates were determined for upriver and 

downriver trips, as well as, all time in mode operations using the following equations, 

CMV Emissions (tons) = (Trips Up River x Power x EF x LF x Time x C) + (Trips Down_River x Power x EF x LF x Time x C)

Where

Trips = Number of trips up and down the Mississippi River (source: Waterborne Commerce)

EF = Emissions Factor (g/kw-hr) [kW = HP x 0.7457]

LF = Load Factor

Time = Activity Factor, hours of use

C = Conversion Factors from grams to tons

Typical summer/ozone season day emissions estimates were determined by taking the result from 

above and dividing by 365 as follows

CMV Emissions (tons/day) = CMV Emissions (tons)/365 days

The base-year 2011 CMV summer/ozone season day emissions estimates are displayed below in 

Table NRCMV1.

Table NRCMV1 - Shelby County, Tennessee 2011 CMV Summer Season Day Emission Estimates 

Category

2011

NOX 

(tpd)

CO 

(tpd)

VOC 

(tpd)

CMV Total 3.72 0.70 0.08

A MS-Excel workbook, titled “2011 Nonroad CMV Inputs and Estimates”, contains the 

methodologies and results used to develop the CMV emissions inventory founded in Attachment 6 

of this document.
Page | 11

Locomotive -

The locomotive emission inventory was developed from local activity data. Five Class I, one 

passenger, and one small railroad operate in Shelby County, Tennessee. Therefore, emissions 

estimates were determined for line-haul and switchyard locomotive operations by obtaining activity 

data from railroad companies, federal agencies, and other sources. Typically, the railroad survey 

request If railroad company officials fail to respond, locomotive emissions estimates were flat-lined 

based on the most recent submittal. Emission estimates for line-haul and switchyard locomotives 

were generated by entering activity data and EPA emissions factors into the following equation,

Locomotive Emissions (tons) = Fuel Consumption x EF x C

Where

EF = Emissions Factor (g/kW-hr)

C = Conversion Factors from grams to tons

Typical summer/ozone season day emissions estimates were determined by taking the result from 

above and dividing by 365 as follows

Locomotive Emissions (tons/days) = Locomotive Emissions (tons)/365 days

The base-year 2011 Locomotive summer/ozone season day emissions estimates are displayed below 

in Table NRL1.

Table NRL1 - 2011 Shelby County, Tennessee Non-road Emissions Summary for all categories

Category

2012

NOX 

(tpd)

CO 

(tpd)

VOC 

(tpd)

Locomotive Totals 5.39 0.82 0.30

A MS-Excel workbook, titled “2011 Nonroad Locomotive Inputs and Estimates”, contains the 

methodologies and results used to develop the locomotive emissions inventory founded in 

Attachment 7 of this document.

Typical summer/ozone season day emissions estimates of NOx, CO, and VOC are calculated on a 

ton per day (tpd) basis and presented below in Table NR. 

Table NR – 2011 Shelby County, Tennessee Non-road Emissions Summary for all categories

Category

2012

NOX 

(tpd)

CO 

(tpd)

VOC 

(tpd)

Airport 8.69 12.76 2.11

CMV 3.72 0.70 0.08

Locomotive 5.39 0.82 0.30

Nonroad Equipment 11.44 158.42 12.61

Total 29.24 172.7 15.1
Page | 12

Nonpoint Source Emissions Estimation Methodoloy:

Industrial Distillate Oil Consumption (SCC: 2102004001)

Source Category Description Overview:

Industrial distillate oil consumption refers to distillate oil that is burned/ consumed in an industrial setting. The 

general approach used to calculate emissions for this source category is to obtain State of Tennessee industrial 

distillate oil consumption estimates from the Energy Information Administration (EIA)1and allocate it to the Shelby 

County, Tennessee-level using the methods described below. To calculate the emissions for oxides of nitrogen 

(NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, the industrial 

distillate oil consumption estimate at the Shelby County, Tennessee-level is multiplied by AP-42 emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with employment data provides a representative method with 

which to apportion industrial distillate oil usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide industrial distillate oil consumption. This information is obtained from the 2011

State Energy Data System (SEDS), which is a comprehensive EIA database that tracks energy production, 

consumption, prices, and expenditure by state. According to this reference source, industrial distillate oil 

consumption in the state of Tennessee during calendar year 2011, is as follows:

1,906,000 barrels (bbl.) (unit conversion: 1,906,000 bbl. x 42 gal = 80,052,000 gal)

1 bbl.

Or

80,052,000 gallons (gal)

2. An estimate of the total industrial employment associated with the North American Industrial Classification 

System (NAICS) codes 21 thru 339999 at both the state of Tennessee level and the Shelby County, Tennessee level. 

This information is obtained from the 2011 County Business Patterns2, a publication of the U.S. Census Bureau and 

is presented in the table below. Ultimately, this data is used to develop a ratio of industrial employment (IEratio) 

which is used to allocate industrial distillate oil consumption from the state level to the county level.

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

21---- Mining 3436 0

22---- Utilities 3451 0

23---- Construction 96312 14,072

31---- Manufacturing 289477 25,030

321/// Wood Product Manufacturing 10599 642

322/// Paper Manufacturing 12224 1,101

323/// Printing and Related Support Activities 11870 1,704

324/// Petroleum and Coal Products Manufacturing 1017 501

325/// Chemical Manufacturing 26501 3,131

326/// Plastics and Rubber Products Manufacturing 21777 525

327/// Nonmetallic Mineral Product Manufacturing 10629 519

331/// Primary Metal Manufacturing 9141 0

332/// Fabricated Metal Product Manufacturing 34074 3,035

333/// Machinery Manufacturing 21450 2,289

334/// Computer and Electronic Product Manufacturing 6688 1,502

335/// Electrical Equipment, Appliance, and Component Manufacturing 13011 319
Page | 13

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

336/// Transportation Equipment Manufacturing 40280 277

337/// Furniture and Related Product Manufacturing 9698 218

339/// Miscellaneous Manufacturing 13165 4,682

Totals 634,800 60,544

Source:County Business Patterns

The table above incorrectly indicates zero employment for NAICS Code 22 -Utilities and NAICS Code 331/// -

Primary Metal Manufacturing. According to local employment information, TVA Allen employs 164 people, 

Memphis, Light, Gas, and Water employs 2,700 people, Nucor Steel employs 405 people. These values will be 

added to the Shelby County, Tennessee employment total displayed above. Ultimately, this data is used to develop a 

ratio of industrial employment (IEratio) which is used to allocate industrial distillate oil consumption from the state 

level to the county level. Specifically, IEratio is the ratio of industrial employees in Shelby County, Tennessee to the 

industrial employees in Tennessee and, as the table indicates, it is equal to 63,649/634,800 or 0.1003

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 

1: External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table 

below

 Table: AP-42 Distillate Fuel Oil Emissions Factors 

Pollutant Emissions Factor (lbs/103gals) Reference

NOx 20 Table 1.3-1 boilers<100 million btu/hr, distillate oil fired

CO 5 Table 1.3-1 boilers<100 million btu/hr, distillate oil fired

VOC 0.2 Table 1.3-3 industrial boilers distillate oil fired

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The industrial distillate oil allocation for Shelby County, Tennessee is determined by multiplying the 2011

industrial distillate oil consumption for the State of Tennessee and the industrial employment ratio developed from 

the industrial employment totals associated with the NAICS codes 21 thru 339999, as shown in the following 

equation:

SCFC = (IEratio) (TNFC)

where

SCFC = Shelby County, Tennessee Industrial Distillate Oil Consumption

IEratio = Industrial Employment Ratio

TNFC = State of Tennessee Distillate Oil Consumption 

Thus, the Shelby County, Tennessee industrial distillate oil consumption is determined as follows:

SCFC = (63,649/634,800) (80,052,000 gallons)

 = 8,026,511.89 gallons

2. Point Source SubtractionIn 2012, Point source consumption of residual oil was 5,270,743.61 gallons. Subsequently, subtracting this amount 

from the consumption value determined above revises the industrial distillate oil consumption total as follows:

SCFCRev = (8,026,511.89 – 1,763,765 gallons)

= 6,262,746.89 gallons
Page | 14

3. Emissions estimates are determined by multiplying the Shelby County, Tennessee industrial distillate oil 

consumption by AP-42 emission factors, and then performing the conversion from pounds to tons. For example, the

annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (6,262,746.89 gals) (20 lbs/ 103gals) (1 ton/ 2000 lbs)

= 62.63 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks) 

where

Annual Emissions = 62.63 tons/year

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 6days/ week 

Substituting this information into the equation gives

= (62.63 tons/year) (1)/ (6 days/week) (52 weeks)

= 0.201tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

 Table: 2011 Shelby County, Tennessee Industrial Distillate Oil Consumption Emissions Estimates 

Pollutant SCFC

(gallons)

Emissions Factor 

(lbs/103gals)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 6,262,746.89 20 62.627 0.201

CO 6,262,746.89 5 15.657 0.050

VOC 6,262,746.89 0.2 0.626 0.002

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. Internet Address: 

2. County Business Patterns, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/11_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxide and Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 15

Industrial Residual Oil Consumption (SCC 2102005000)

Source Category Description Overview:

Industrial Residual Oil Consumption refers to residual oil that is burned/ consumed in an industrial setting. The 

general approach used to calculate emissions for this source category is to obtain State of Tennessee industrial 

residual oil consumption estimates from the Energy Information Administration (EIA) 1and allocate it to the Shelby 

County, Tennessee-level using the methods described below. To calculate the emissions for oxides of nitrogen 

(NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, the industrial 

residual oil consumption estimate at the Shelby County, Tennessee-level is multiplied by AP-42 emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with employment data provides a representative method with 

which to apportion industrial residual oil usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide industrial distillate oil consumption. This information is obtained from the 2011

State Energy Data System (SEDS), which is a comprehensive EIA database that tracks energy production, 

consumption, prices, and expenditure by state. According to this reference source, industrial distillate oil 

consumption in the state of Tennessee during calendar year 2011, is as follows:

25,000 barrels (bbl) (unit conversion: 25,000 bbl x 42 gal = 1,050,000 gal)

1 bbl

Or

1,050,000 gallons (gal)

2. An estimate of the total industrial employment associated with the North American Industrial Classification 

System (NAICS) codes 21 thru 339999 at both the state of Tennessee level and the Shelby County, Tennessee level. 

This information is obtained from the 2011 County Business Patterns2, a publication of the U.S. Census Bureau and 

is presented in the table below. Ultimately, this data is used to develop a ratio of industrial employment (IEratio) 

which is used to allocate industrial residual oil consumption from the state level to the county level.

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

21---- Mining 3436 0

22---- Utilities 3451 0

23---- Construction 96312 14,072

31---- Manufacturing 289477 25,030

321/// Wood Product Manufacturing 10599 642

322/// Paper Manufacturing 12224 1,101

323/// Printing and Related Support Activities 11870 1,704

324/// Petroleum and Coal Products Manufacturing 1017 501

325/// Chemical Manufacturing 26501 3,131

326/// Plastics and Rubber Products Manufacturing 21777 525

327/// Nonmetallic Mineral Product Manufacturing 10629 519

331/// Primary Metal Manufacturing 9141 0

332/// Fabricated Metal Product Manufacturing 34074 3,035

333/// Machinery Manufacturing 21450 2,289

334/// Computer and Electronic Product Manufacturing 6688 1,502

335/// Electrical Equipment, Appliance, and Component Manufacturing 13011 319

336/// Transportation Equipment Manufacturing 40280 277

337/// Furniture and Related Product Manufacturing 9698 218

339/// Miscellaneous Manufacturing 13165 4,682

Totals 634,800 60,544

Source:County Business Patterns
Page | 16

The table above incorrectly indicates zero employment for NAICS Code 22 -Utilities and NAICS Code 331/// -

Primary Metal Manufacturing. According to local employment information, TVA Allen employs 164 people, 

Memphis, Light, Gas, and Water employs 2,700 people, Nucor Steel employs 405 people. These values will be 

added to the Shelby County, Tennessee employment total displayed above. Ultimately, this data is used to develop a 

ratio of industrial employment (IEratio) which is used to allocate industrial distillate oil consumption from the state 

level to the county level. Specifically, IEratio is the ratio of industrial employees in Shelby County, Tennessee to the 

industrial employees in Tennessee and, as the table indicates, it is equal to 63,649/634,800 or 0.1003 

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

 Table: AP-42 Residual Fuel Oil Emissions Factors 

Pollutant Emissions Factor (lbs/103gals) Reference

NOx 55 Table 1.3-1 boilers<100 million btu/hr, residual oil fired

CO 5 Table 1.3-1 boilers<100 million btu/hr, residual oil fired

VOC 0.28 Table 1.3-3 industrial boilers residual oil fired

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The industrial residual oil allocation for Shelby County, Tennessee is determined by multiplying the 2011

industrial residual oil consumption for the State of Tennessee and the industrial employment ratio developed from 

the industrial employment totals associated with the NAICS codes 21 thru 339999, as shown in the following 

equation:

SCFC = (IEratio) (TNFC)

where

SCFC = Shelby County, Tennessee Industrial Residual Oil Consumption

IEratio = Industrial Employment Ratio

TNFC = State of Tennessee Residual Oil Consumption 

Thus, the Shelby County, Tennessee industrial residual oil consumption is determined as follows:

SCFC = (63,649/634,800) (1,050,000 gallons)

= 105,279.54 gallons

2. Point Source SubtractionIn 2012, Point source consumption of residual oil was 49,710 gallons. Subsequently, subtracting this amount from 

the consumption value determined above revises the industrial distillate oil consumption total as follows:

SCFCRev = (105,279.54 – 49,710 gallons)

= 55,569.54 gallons

3. Emissions estimates are determined for each pollutant by multiplying the Shelby County, Tennessee industrial 

residual oil consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to 

tons. For example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (55,569.54 gals) (55 lbs/103gals) (1 ton/2000 lbs)

= 1.528 tons/year
Page | 17

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 1.528 tons/year

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 6 days/ week 

Substituting this information into the equation gives

= (1.528tons/year)(1) / (6 days/week) (52 weeks)

= 0.00490 tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

 Table: 2011 Shelby County, Tennessee Industrial Residual Oil Consumption Emissions Estimates 

Pollutant SCFC

(gallons)

Emissions Factor 

(lbs/103gals)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 55,569.54 55 1.528 0.00490

CO 55,569.54 5 0.139 0.00045

VOC 55,569.54 0.28 0.008 0.00002

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. Internet Address: 

3. County Business Patterns, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/11_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxideand Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 18

Industrial Natural Gas Consumption (SCC 2102006000)

Source Category Description Overview:

Industrial Natural Gas Consumption refers to natural gas that is burned/ consumed in an industrial setting. The 

general approach used to calculate emissions for this source category is to obtain State of Tennessee industrial 

natural gas consumption estimates from the Energy Information Administration (EIA) 1and allocate it to the Shelby 

County, Tennessee-level using the methods described below. To calculate the emissions for oxides of nitrogen 

(NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, the industrial 

natural gas consumption estimate at the Shelby County, Tennessee-level is multiplied by AP-42 emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with employment data provides a representative method with 

which to apportion industrial natural gas usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide industrial natural gas consumption. This information is obtained from the.2011

State Energy Data System (SEDS), which is a comprehensive EIA database that tracks energy production, 

consumption, prices, and expenditure by state. According to this reference source, industrial natural gas 

consumption in the state of Tennessee during calendar year 2011, is as follows:

107 E9 FT3

Or

107,000 E6 FT3

2. An estimate of the total industrial employment associated with the North American Industrial Classification 

System (NAICS) codes 21 thru 339999 at both the state of Tennessee level and the Shelby County, Tennessee level. 

This information is obtained from the 2011 County Business Patterns2, a publication of the U.S. Census Bureau and 

is presented in the table below. Ultimately, this data is used to develop a ratio of industrial employment (IEratio) 

which is used to allocate industrial natural gas consumption from the state level to the county level.

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

21---- Mining 3436 0

22---- Utilities 3451 0

23---- Construction 96312 14,072

31---- Manufacturing 289477 25,030

321/// Wood Product Manufacturing 10599 642

322/// Paper Manufacturing 12224 1,101

323/// Printing and Related Support Activities 11870 1,704

324/// Petroleum and Coal Products Manufacturing 1017 501

325/// Chemical Manufacturing 26501 3,131

326/// Plastics and Rubber Products Manufacturing 21777 525

327/// Nonmetallic Mineral Product Manufacturing 10629 519

331/// Primary Metal Manufacturing 9141 0

332/// Fabricated Metal Product Manufacturing 34074 3,035

333/// Machinery Manufacturing 21450 2,289

334/// Computer and Electronic Product Manufacturing 6688 1,502

335/// Electrical Equipment, Appliance, and Component Manufacturing 13011 319

336/// Transportation Equipment Manufacturing 40280 277

337/// Furniture and Related Product Manufacturing 9698 218

339/// Miscellaneous Manufacturing 13165 4,682

Totals 634,800 60,544

Source:County Business Patterns
Page | 19

The table above incorrectly indicates zero employment for NAICS Code 22 -Utilities and NAICS Code 331/// -

Primary Metal Manufacturing. According to local employment information, TVA Allen employs 164 people, 

Memphis, Light, Gas, and Water employs 2,700 people, Nucor Steel employs 405 people. These values will be 

added to the Shelby County, Tennessee employment total displayed above. Ultimately, this data is used to develop a 

ratio of industrial employment (IEratio) which is used to allocate industrial distillate oil consumption from the state 

level to the county level. Specifically, IEratio is the ratio of industrial employees in Shelby County, Tennessee to the 

industrial employees in Tennessee and, as the table indicates, it is equal to 63,649/634,800 or 0.1003 

. 

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 

1: External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table 

below

Table: AP-42 Natural Gas Emissions Factors 

Pollutant Emissions Factor (lbs/106cubic feet) Reference

NOx 100 Table 1.4-1 boilers<100 million btu/hr, natural gas fired

CO 84 Table 1.4-1 boilers<100 million btu/hr, natural gas fired

VOC 5.5 Table 1.4-2 industrial boilers natural gas fired

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The industrial natural gas allocation for Shelby County, Tennessee is determined by multiplying the 2011

industrial natural gas consumption for the State of Tennessee and the industrial employment ratio developed from 

the industrial employment totals associated with the NAICS codes 21 thru 339999, as shown in the following 

equation:

SCFC = (IEratio) (TNFC)

where

SCFC = Shelby County, Tennessee Industrial Natural Gas Consumption

IEratio = Industrial Employment Ratio

TNFC = State of Tennessee Natural Gas Consumption 

Thus, the Shelby County, Tennessee industrial natural gas consumption is determined as follows:

SCFC = (63,649/634,800) (107,000 E6 FT3)

= 10,728.49 E6 FT3

2 Point Source Subtraction –

The amount above represents all industrial usage and what is needed is the nonpoint portion of industrial usage. To 

obtain this, local employment data is used to determine the Title V percent representation in the industrial 

employment figure developed above as follows: 

point portion of the industrial sector = 6,009/62,816 = 0.09566 

The nonpoint percent representation is then determined as follows:

nonpoint portion of the industrial sector = 1- 0.09566 = 0.9043 or 90.43 %
Page | 20

Subsequently, multiplying this percentage to the consumption amount determined above revises the industrial 

natural gas consumption total as follows:

SCFCRev = (0.9043) (10,728.49)

= 9,701.77 E6 gallons

3 Emissions estimates are determined by multiplying the Shelby County, Tennessee industrial natural gas 

consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to tons. For 

example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (9,701.77 E6 FT3) (100 lbs/ E6 FT3) (1 ton/ 2000 lbs)

= 485.089tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 485.089tons/year

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 6days/ week 

Substituting this information into the equation gives

= (485.089 tons/year) (1)/ (6 days/week) (52 weeks)

= 1.55477tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

 Table: 2011 Shelby County, Tennessee Industrial Natural Gas Consumption Emissions Estimates 

Pollutant SCFC

(E6 FT3)

Emissions Factor 

(lbs/E6 FT3)

Emissions Estimate

(tons/year)

Emissions Estimate

NOx 9,701.77 100 485.089 (tons/day) 1.55477

CO 9,701.77 84 407.474 1.30601

VOC 9,701.77 5.5 26.680 0.08551

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. Internet Address: 

4. County Business Patterns, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/11_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxide and Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 21

Industrial Liquified Petroleum Gas Consumption (SCC 2102007000)

Source Category Description Overview:

Industrial Liquified Petroleum Gas Consumption refers to liquified petroleum gas that is burned/ consumed in an 

industrial setting. The general approach used to calculate emissions for this source category is to obtain State of 

Tennessee liquified petroleum gas consumption estimates from the Energy Information Administration (EIA) 1and 

allocate it to the Shelby County, Tennessee-level using the methods described below. To calculate the emissions for 

oxides of nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, 

the liquified petroleum gas consumption estimate at the Shelby County, Tennessee-level is multiplied by AP-42 

emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with employment data provides a representative method with 

which to apportion industrial LPG usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide industrial liquified petroleum gas consumption. This information is obtained from 

the.2011 State Energy Data System (SEDS), which is a comprehensive EIA database that tracks energy production, 

consumption, prices, and expenditure by state. According to this reference source, industrial liquified petroleum gas 

consumption in the state of Tennessee during calendar year 2011, is as follows:

224,000 bbls (unit conversion: 224,000 bbl x 42 gal = 9,408,000 gal)

1 bbl

Or

9,408,000 gal

2. An estimate of the total industrial employment associated with the North American Industrial Classification 

System (NAICS) codes 21 thru 339999 at both the state of Tennessee level and the Shelby County, Tennessee level. 

This information is obtained from the 2011 County Business Patterns2, a publication of the U.S. Census Bureau and 

is presented in the table below. Ultimately, this data is used to develop a ratio of industrial employment (IEratio) 

which is used to allocate industrial liquified petroleum gas consumption from the state level to the county level. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

21---- Mining 3436 0

22---- Utilities 3451 0

23---- Construction 96312 14,072

31---- Manufacturing 289477 25,030

321/// Wood Product Manufacturing 10599 642

322/// Paper Manufacturing 12224 1,101

323/// Printing and Related Support Activities 11870 1,704

324/// Petroleum and Coal Products Manufacturing 1017 501

325/// Chemical Manufacturing 26501 3,131

326/// Plastics and Rubber Products Manufacturing 21777 525

327/// Nonmetallic Mineral Product Manufacturing 10629 519

331/// Primary Metal Manufacturing 9141 0

332/// Fabricated Metal Product Manufacturing 34074 3,035

333/// Machinery Manufacturing 21450 2,289

334/// Computer and Electronic Product Manufacturing 6688 1,502

335/// Electrical Equipment, Appliance, and Component Manufacturing 13011 319

336/// Transportation Equipment Manufacturing 40280 277

337/// Furniture and Related Product Manufacturing 9698 218

339/// Miscellaneous Manufacturing 13165 4,682

Totals 634,800 60,544

Source:County Business Patterns
Page | 22

The table above incorrectly indicates zero employment for NAICS Code 22 -Utilities and NAICS Code 331/// -

Primary Metal Manufacturing. According to local employment information, TVA Allen employs 164 people, 

Memphis, Light, Gas, and Water employs 2,700 people, Nucor Steel employs 405 people. These values will be 

added to the Shelby County, Tennessee employment total displayed above. Ultimately, this data is used to develop a 

ratio of industrial employment (IEratio) which is used to allocate industrial distillate oil consumption from the state

level to the county level. Specifically, IEratio is the ratio of industrial employees in Shelby County, Tennessee to the 

industrial employees in Tennessee and, as the table indicates, it is equal to 63,649/634,800 or 0.1003 

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

 Table: AP-42 Liquified Petroleum Gas Emissions Factors 

Pollutant Emissions Factor (lbs/103gal) Reference

NOx 14 Table 1.5-1 boilers, liquified petroleum gas fired

CO 7.95 Table 1.5-1 boilers, liquified petroleum gas fired

VOC 1.05 Table 1.5-1 boilers liquified petroleum gas fired

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The industrial liquified petroleum gas allocation for Shelby County, Tennessee is determined by multiplying the 

2011 industrial liquified petroleum gas consumption for the State of Tennessee and the industrial employment ratio 

developed from the industrial employment totals associated with the NAICS codes 21 thru 339999, as shown in the 

following equation:

SCFC = (IEratio) (TNFC)

where

SCFC = Shelby County, Tennessee Industrial Liquified Petroleum Gas Consumption

IEratio = Industrial Employment Ratio

TNFC = State of Tennessee Liquified Petroleum Gas Consumption

Thus, the Shelby County, Tennessee industrial liquified gas consumption is determined as follows:

SCFC = (63,649/634,800) (9,408,000 gal)

= 943,304.65 gal

2. No Point Source Subtraction

3. Emissions estimates are determined by multiplying the Shelby County, Tennessee industrial liquified petroleum 

gas consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to tons. For 

example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (943,304.65 gal) (14 lbs/10 3gal) (1 ton/ 2000 lbs)

= 6.281 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 6.603 tons/year

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 6days/ week 
Page | 23

Substituting this information into the equation gives

= (6.603 tons/year) (1) / (6 days/week) (52 weeks)

= 0.02116tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

 Table: 2011 Shelby County, Tennessee Industrial Liquified Petroleum Gas Consumption Emissions Estimates

Pollutant SCFC

(gal)

Emissions Factor 

(lbs/103gal)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 943,304.65 14 6.603 0.02116

CO 943,304.65 7.95 3.750 0.01202

VOC 943,304.65 1.05 0.495 0.00159

Assumptions:

Employment data is representative of the industrial establishments surveyed by Department of Energy in the 

preparation of the State Energy Data Report.

Control Factor:

No controls were assumed for this category

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. Internet Address: 

5. County Business Patterns, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/11_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxide and Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 24

Commercial/Institutional Distillate Oil Consumption (SCC 2103004000)

Source Category Description Overview:

Commercial/Institutional Distillate Oil Consumption refers to distillate oil that is burned/ consumed in a commercial 

setting. The general approach used to calculate emissions for this source category is to obtain State of Tennessee 

commercial distillate oil consumption estimates from the Energy Information Administration (EIA) 1and allocate it 

to the Shelby County, Tennessee-level using the methods described below. To calculate the emissions for oxides of 

nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, the 

commercial distillate oil consumption estimate at the Shelby County, Tennessee-level is multiplied by AP-42 

emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with employment data provides a representative method with 

which to apportion commercial distillate oil usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide commercial distillate oil consumption. This information is obtained from the.2011

State Energy Data System (SEDS), which is a comprehensive EIA database that tracks energy production, 

consumption, prices, and expenditure by state. According to this reference source, commercial distillate oil 

consumption in the state of Tennessee during calendar year 2011, is as follows:

1,030,000 bbl (unit conversion: 1,030,000 bbl x 42 gal = 43,260,000 gal)

1 bbl

Or

43,260,000 gal

2. An estimate of the total industrial employment associated with the North American Industrial Classification 

System (NAICS) codes 1153, 2123, 42, 44, 451-454, 48, 492, 51-56, 61, 62, 71, 72, 81 at both the state of 

Tennessee level and the Shelby County, Tennessee level. This information is obtained from the 2011 County 

Business Patterns2, a publication of the U.S. Census Bureau and is presented in the table below. Ultimately, this 

data is used to develop a ratio of commercial employment (CEratio) which is used to allocate commercial distillate 

oil consumption from the state level to the county. 

Table: 2011 Commercial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

1153// Support Activities for Forestry 42 0

2123// Water, Sewage and Other Systems 0 0

42---- Wholesale Trade 111428 28839

44---- Retail Trade 305578 45590

451/// Sporting Goods, Hobby, Book, and Music Stores 9599 1729

452/// General Merchandise Stores 68606 8793

453/// Miscellaneous Store Retailers 13931 2373

454/// Nonstore Retailers 10777 1324

48---- Transportation and Warehousing 121437 49012

492/// Couriers and Messengers 0 0

51---- Information 48967 6084

52---- Finance and Insurance 109092 18380

53---- Real Estate and Rental and Leasing 31686 6202

54---- Professional, Scientific, and Technical Services 99809 15809

55---- Management of Companies and Enterprises 74911 27370

56---- Administrative and Support and Waste Management and 

Remediation Services

198786 42831

61---- Educational Services 57064 9677

62---- Health Care and Social Assistance 377420 65113

71---- Arts, Entertainment, and Recreation 30058 5218

72---- Accommodation and Food Services 232398 36921
Page | 25

Table: 2011 Commercial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

81---- Other Services (except Public Administration) 107533 21201

Totals 2,009,122 392,466

Source:County Business Patterns

Specifically, CEratio is the ratio of commercial employees in Shelby County, Tennessee to the commercial

employees in Tennessee and, as the table indicates, it is equal to 392,466/2,009,122or 0.1953.

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

 Table: AP-42 Distillate Fuel Oil Emissions Factors 

Pollutant Emissions Factor (lbs/103gal) Reference

NOx 20 Table 1.3-1 boilers<100 million btu/hr, distillate oil fired

CO 5 Table 1.3-1 boilers<100 million btu/hr, distillate oil fired

VOC 0.34 Table 1.3-3 commercial boilers distillate oil fired

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The commercial distillate oil allocation for Shelby County, Tennessee is determined by multiplying the 2011

commercial distillate oil consumption for the State of Tennessee and the commercial employment ratio developed 

from the commercial employment totals associated with the NAICS codes 1153, 2123, 42, 44, 451-454, 48, 492, 51-

56, 61, 62, 71, 72, 81, as shown in the following equation:

SCFC = (CEratio ) (TNFC)

where

SCFC = Shelby County, Tennessee Commercial Distillate Oil Consumption

CEratio = Commercial Employment Ratio

TNFC = State of Tennessee Distillate Oil Consumption 

Thus, the Shelby County, Tennessee commercial distillate oil consumption is determined as follows:

SCFC = (392,466/2,009,122) (43,260,000 gal)

= 8,450,496.86 gal

2. No Point Source Subtraction

3. Emissions estimates are determined by multiplying the Shelby County, Tennessee commercial distillate oil

consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to tons. For 

example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (8,450,496.86 gal) (20 lbs/ 103gal) (1 ton/ 2000 lbs)

= 84.51 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 84.51 tons/year

SAF = Seasonal Adjustment Factor, 0.6

WAF = Weekly Activity Factor, 6days/ week 
Page | 26

Substituting this information into the equation gives

= (84.51 tons/year) (0.6)/ (6 days/week) (52 weeks)

= 0.16251 tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

 Table: 2011 Shelby County, Tennessee Commercial Distillate Oil Consumption Emissions Estimates 

Pollutant SCFC

(gal)

Emissions Factor 

(lbs/103gal)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 8,450,496.86 20 84.505 0.16251

CO 8,450,496.86 5 21.126 0.04063

VOC 8,450,496.86 0.34 1.437 0.00276

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. Internet Address: 

6. County Business Patterns, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/11_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxideand Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 27

Commercial/Institutional Natural Gas Consumption (SCC 2103006000)

Source Category Description Overview:

Commercial/Institutional Natural Gas Consumption refers to natural gas that is burned/ consumed in a commercial 

setting. The general approach used to calculate emissions for this source category is to obtain State of Tennessee 

commercial natural gas consumption estimates from the Energy Information Administration (EIA) 1and allocate it 

to the Shelby County, Tennessee-level using the methods described below. To calculate the emissions for oxides of 

nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, the 

commercial natural gas consumption estimate at the Shelby County, Tennessee-level is multiplied by AP-42 

emission factors.

Assumptions:

Data provided by the local natural gas supplier is representative of the operations conducted by the local commercial 

establishments.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total countywide commercial and the other natural gas consumption. This information is obtained 

from the MLGW publication “Facts and Figures, For Year Ending December 31, 2011”. According to this reference 

source, commercial and the other natural gas consumption in the Shelby County, Tennessee during calendar year 

2011, is as follows:

Commercial – 10,991,897 FT3

Other - 2,080,326 FT3

 Total 13,072,223 FT3

2. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

Table: AP-42 Natural Gas Emissions Factors 

Pollutant Emissions Factor (lbs/E6 FT3) Reference

NOx 100 Table 1.4-1 boilers<100 million btu/hr, natural gas fired

CO 84 Table 1.4-1 boilers<100 million btu/hr, natural gas fired

VOC 5.5 Table 1.4-2 commercial boilers natural gas fired

Calculation Methodology:

Emissions estimates of NOx, CO, and VOC are determined by multiplying the Shelby County, Tennessee 

residential natural gas consumption estimate, which is represented in the equation below as SCFC, by AP-42 

emission factors, and then performing the pound to ton unit conversion. For example, the emissions estimate for 

nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (13,072.223 E6 FT3) (100 lbs/E6 FT3) (1ton/2000 lbs)

= 507.89 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 28

Annual Emissions = 653.611tons/year

SAF = Seasonal Adjustment Factor, 0.6

WAF = Weekly Activity Factor, 6days/ week 

Substituting this information into the equation gives

= (653.611tons/year) (0.6)/ (6 days/week) (52 weeks)

= 1.25694tons/day 

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

 Table: 2011 Shelby County, Tennessee Commercial Natural Gas Consumption Emissions Estimates

Pollutant SCFC

(E6 FT3)

Emissions Factor 

(lbs/E6 FT3)

Emissions Estimate

(tons/year)

Emissions Estimate

NOx 13,072.223` 100 653.611 (tons/day) 1.25694

CO 13,072.223 84 549.033 1.50420

VOC 13,072.223 5.5 35.949 0.09849

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. Internet Address: 

7. County Business Patterns, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/11_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxideand Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 29

Commercial/Institutional Liquified Petroleum Gas Consumption (SCC 2103004000)

Source Category Description Overview:

Commercial/Institutional Liquified Petroleum Gas Consumption refers to liquified petroleum gas that is burned/ 

consumed in a commercial setting. The general approach used to calculate emissions for this source category is to 

obtain State of Tennessee liquified petroleum gas consumption estimates from the Energy Information 

Administration (EIA) 1and allocate it to the Shelby County, Tennessee-level using the methods described below. To 

calculate the emissions for oxides of nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds 

(VOC) for a typical summer day, the commercial liquified petroleum gas consumption estimate at the Shelby 

County, Tennessee-level is multiplied by AP-42 emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with employment data provides a representative method with 

which to apportion commercial LPG usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide commercial liquified petroleum gas consumption. This information is obtained 

from the.2011 State Energy Data System (SEDS), which is a comprehensive EIA database that tracks energy 

production, consumption, prices, and expenditure by state. According to this reference source, commercial liquified 

petroleum gas consumption in the state of Tennessee during calendar year 2011, is as follows:

695,000 bbl (unit conversion: 695,000 bbl bbl x 42 gal = 29,190,000 gal)

1 bbl

Or

29,190,000 gal

2. An estimate of the total industrial employment associated with the North American Industrial Classification 

System (NAICS) codes 1153, 2123, 42, 44, 451-454, 48, 492, 51-56, 61, 62, 71, 72, 81 at both the state of 

Tennessee level and the Shelby County, Tennessee level. This information is obtained from the 2011 County 

Business Patterns2, a publication of the U.S. Census Bureau and is presented in the table below. Ultimately, this data 

is used to develop a ratio of commercial employment (CEratio) which is used to allocate commercial liquified 

petroleum gas oil consumption from the state level to the county. 

Table: 2011 Commercial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

1153// Support Activities for Forestry 42 0

2123// Water, Sewage and Other Systems 0 0

42---- Wholesale Trade 111428 28839

44---- Retail Trade 305578 45590

451/// Sporting Goods, Hobby, Book, and Music Stores 9599 1729

452/// General Merchandise Stores 68606 8793

453/// Miscellaneous Store Retailers 13931 2373

454/// Nonstore Retailers 10777 1324

48---- Transportation and Warehousing 121437 49012

492/// Couriers and Messengers 0 0

51---- Information 48967 6084

52---- Finance and Insurance 109092 18380

53---- Real Estate and Rental and Leasing 31686 6202

54---- Professional, Scientific, and Technical Services 99809 15809

55---- Management of Companies and Enterprises 74911 27370

56---- Administrative and Support and Waste Management and 

Remediation Services

198786 42831

61---- Educational Services 57064 9677

62---- Health Care and Social Assistance 377420 65113

71---- Arts, Entertainment, and Recreation 30058 5218

72---- Accommodation and Food Services 232398 36921
Page | 30

Table: 2011 Commercial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

81---- Other Services (except Public Administration) 107533 21201

Totals 2,009,122 392,466

Source:County Business Patterns

Specifically, CEratio is the ratio of commercial employees in Shelby County, Tennessee to the commercial 

employees in Tennessee and, as the table indicates, it is equal to 392,466/2,009,122or 0.1953.

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

 Table: AP-42 Liquified Petroleum Gas Emissions Factors

Pollutant Emissions Factor (lbs/103gal) Reference

NOx 14 Table 1.5-1 boilers, liquified petroleum gas fired

CO 7.95 Table 1.5-1 boilers, liquified petroleum gas fired

VOC 1.05 Table 1.5-1 boilers liquified petroleum gas fired

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The commercial liquified petroleum gas allocation for Shelby County, Tennessee is determined by multiplying 

the 2011 commercial liquified petroleum gas consumption for the State of Tennessee and the commercial 

employment ratio developed from the commercial employment totals associated with the NAICS codes 21 thru 

339999, as shown in the following equation:

SCFC = (CEratio) (TNFC)

where,

SCFC = Shelby County, Tennessee Commercial Liquified Petroleum Gas Consumption

CEratio = Commercial Employment Ratio

TNFC = State of Tennessee Liquified Petroleum Gas Consumption 

Thus, the Shelby County, Tennessee commercial liquified petroleum gas consumption is determined as follows:

SCFC = (392,466/2,009,122) (29,190,000 gal)

= 5,702,034.29 gal

2. No Point Source Subtraction

3. Emissions estimates are determined by multiplying the Shelby County, Tennessee commercial liquified 

petroleum gas consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to 

tons. For example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (5,702,034.29 gal) (14 lbs/ 103gal) (1 ton/ 2000 lbs)

= 39.91 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 39.91 tons/year

SAF = Seasonal Adjustment Factor, 0.6

WAF = Weekly Activity Factor, 6days/ week 
Page | 31

Substituting this information into the equation gives

= (39.91 tons/year) (0.6)/ (6 days/week) (52 weeks)

= 0.07676 tons/day 

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Commercial Liquified Petroleum Gas Consumption Emissions Estimates

Pollutant SCFC

(gal)

Emissions Factor 

(lbs/103gal)

Emissions Estimate

(tons/year)

Emissions Estimate

NOx 5,702,034.29 14 39.914 (tons/day) 0.07676

CO 5,702,034.29 7.95 22.666 0.04359

VOC 5,702,034.29 1.05 2.994 0.00576

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. Internet Address: 

2 County Business Patterns, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/11_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxideand Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 32

Commercial/Institutional Kerosene Consumption (SCC 2103011000)

Source Category Description Overview:

Commercial/Institutional Kerosene Consumption refers to kerosene that is burned/ consumed in a commercial 

setting. The general approach used to calculate emissions for this source category is to obtain State of Tennessee 

commercial kerosene consumption estimates from the Energy Information Administration (EIA) 1and allocate it to 

the Shelby County, Tennessee-level using the methods described below. To calculate the emissions for oxides of 

nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, the 

commercial kerosene consumption estimate at the Shelby County, Tennessee-level is multiplied by AP-42 emission 

factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with employment data provides a representative method with 

which to apportion commercial kerosene usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide commercial kerosene consumption. This information is obtained from the 2011

State Energy Data System (SEDS), which is a comprehensive EIA database that tracks energy production, 

consumption, prices, and expenditure by state. According to this reference source, commercial kerosene 

consumption in the state of Tennessee during calendar year 2011, is as follows:

7,000 bbl (unit conversion: 7,000 bbl x 42 gal = 294,000 gal)

1 bbl

Or

294,000 gal

2. An estimate of the total industrial employment associated with the North American Industrial Classification 

System (NAICS) codes 1153, 2123, 42, 44, 451-454, 48, 492, 51-56, 61, 62, 71, 72, 81 at both the state of 

Tennessee level and the Shelby County, Tennessee level. This information is obtained from the 2011 County 

Business Patterns2, a publication of the U.S. Census Bureau and is presented in the table below. Ultimately, this 

data is used to develop a ratio of commercial employment (CEratio) which is used to allocate commercial kerosene 

consumption from the state level to the county.

Table: 2011 Commercial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

1153// Support Activities for Forestry 42 0

2123// Water, Sewage and Other Systems 0 0

42---- Wholesale Trade 111428 28839

44---- Retail Trade 305578 45590

451/// Sporting Goods, Hobby, Book, and Music Stores 9599 1729

452/// General Merchandise Stores 68606 8793

453/// Miscellaneous Store Retailers 13931 2373

454/// Nonstore Retailers 10777 1324

48---- Transportation and Warehousing 121437 49012

492/// Couriers and Messengers 0 0

51---- Information 48967 6084

52---- Finance and Insurance 109092 18380

53---- Real Estate and Rental and Leasing 31686 6202

54---- Professional, Scientific, and Technical Services 99809 15809

55---- Management of Companies and Enterprises 74911 27370

56---- Administrative and Support and Waste Management and 

Remediation Services

198786 42831

61---- Educational Services 57064 9677

62---- Health Care and Social Assistance 377420 65113

71---- Arts, Entertainment, and Recreation 30058 5218

72---- Accommodation and Food Services 232398 36921
Page | 33

Table: 2011 Commercial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Tennessee Shelby County, TN

81---- Other Services (except Public Administration) 107533 21201

Totals 2,009,122 392,466

Source:County Business Patterns

Specifically, CEratio is the ratio of commercial employees in Shelby County, Tennessee to the commercial 

employees in Tennessee and, as the table indicates, it is equal to 392,466/2,009,122or 0.1953.

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

 Table: AP-42 Kerosene Fuel Oil Emissions Factors 

Pollutant Emissions Factor (lbs/103gal)* Reference

NOx 20 x (135,000/ 140,000) = 19.8 Table 1.3-1 boilers<100 million btu/hr, kerosene fired

CO 5 x (135,000/ 140,000) = 4.8 Table 1.3-1 boilers<100 million btu/hr, kerosene fired

VOC 0.34 x (135,000/ 140,000) = 033 Table 1.3-3 commercial boilers kerosene fired

*Note: 135,000/140,000 is the ratio of the heat content of kerosene to distillate oil

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The commercial kerosene allocation for Shelby County, Tennessee is determined by multiplying the 2011

commercial kerosene consumption for the State of Tennessee and the commercial employment ratio developed from 

the commercial employment totals associated with the NAICS codes 1153, 2123, 42, 44, 451-454, 48, 492, 51-56, 

61, 62, 71, 72, 81, as shown in the following equation:

SCFC = CEratio x TNFC

where,

SCFC = Shelby County, Tennessee Commercial Kerosene Consumption

CEratio = Commercial Employment Ratio

TNFC = State of Tennessee Kerosene Consumption 

Thus, the Shelby County, Tennessee commercial kerosene consumption is determined as follows:

SCFC = (392,466/2,009,122) (294,000 gal)

= 57,430.56 gal

2. No Point Source Subtraction

3. Emissions estimates are determined by multiplying the Shelby County, Tennessee commercial kerosene

consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to tons. For 

example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (57,430.56 gal) (19.3 lbs/ 103gal) (1 ton/ 2000 lbs)

= 0.5542 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 34

Annual Emissions = 0.5542 tons/year

SAF = Seasonal Adjustment Factor, 0.6

WAF = Weekly Activity Factor, 6days/ week 

Substituting this information into the equation gives

= (0.5542 tons/year) (0.6)/ (6 days/week) (52 weeks)

= 0.00107tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Commercial Kerosene Consumption Emissions Estimates 

Pollutant SCFC

(gal)

Emissions Factor 

(lbs/103gal)

Emissions Estimate

(tons/year)

Emissions Estimate

NOx 57,430.56 19.3 0.554 (tons/day) 0.00107

CO 57,430.56 4.8 0.138 0.00027

VOC 57,430.56 0.33 0.009 0.00002

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. Internet Address: 

2. County Business Patterns, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/11_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxideand Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 35

Residential Distillate Oil Consumption (SCC 2104006000)

Source Category Description Overview:

Residential Distillate Oil Consumption refers to distillate oil that is burned/ consumed in a residential setting. The 

general approach used to calculate emissions for this source category is to obtain State of Tennessee residential 

distillate oil consumption estimates from the Energy Information Administration (EIA) 1and allocate it to the 

Shelby County, Tennessee-level using the methods described below. To calculate the emissions for oxides of 

nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, the 

residential distillate oil consumption estimate at the Shelby County, Tennessee-level is multiplied by AP-42 

emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with housing data provides a representative method with which to 

apportion local residential distillate oil usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide residential distillate oil consumption. This information is obtained from the.2011

State Energy Data System (SEDS)1, which is a comprehensive EIA database that tracks energy production, 

consumption, prices, and expenditure by state. According to this reference source, residential distillate oil 

consumption in the state of Tennessee during calendar year 2011, is as follows:

45,000 bbl (unit conversion: 45,000 bbl x 42 gal = 1,890,000 gal)

1 bbl

Or

1,890,000 gal

2. An estimate of the total number of housing units in the State of Tennessee and in Shelby County, Tennessee 

using distillate oil as a heating fuel. This information is provided in the 2011 American Fact Finder2, a publication 

of the U.S. Census Bureau2and is presented in the table below. Ultimately, this data is used to develop a ratio of 

residential housing units (RHUratio) using distillate oil and is then is used to allocate residential distillate oil 

consumption from the state level to the county. 

Table: 2011 Number of Households in Tennessee and Shelby, County, Tennessee using Distillate Oil

House Heating Fuel Tennessee Shelby County, TN

Distillate Oil 16,752 340

Source: American Fact Finder, http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?src=bkmk

Specifically, RHUratio is the ratio of residential housing units in Shelby County, Tennessee to the residential housing 

units in Tennessee and, as the table indicates, it is equal to 340/ 16,752or 0.02030.

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

 Table: AP-42 Distillate Fuel Oil Emissions Factors 

Pollutant Emissions Factor (lbs/103gal) Reference

NOx 18 Table 1.3-1 boilers<100 million btu/hr, distillate oil fired

CO 5 Table 1.3-1 boilers<100 million btu/hr, distillate oil fired

VOC 0.7 Table 1.3-3 residential furnace distillate oil fired
Page | 36

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The residential distillate oil allocation for Shelby County, Tennessee is determined by multiplying the 2011

residential distillate oil consumption for the State of Tennessee and the Residential Housing Units Ratio, as shown 

in the following equation:

SCFC = (RHUratio) (TNFC)

where,

SCFC = Shelby County, Tennessee Residential Distillate Oil Consumption

RHUratio = Residential Housing Units Ratio

TNFC = State of Tennessee Residential Distillate Oil Consumption 

Thus, the Shelby County, Tennessee residential distillate oil allocation is determined as follows:

SCFC = 340/ 16,752 x 1,890,000 gal

 = 38,359.60 gal

2. Emissions estimates are determined by multiplying the Shelby County, Tennessee residential distillate oil

consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to tons. For 

example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (38,359.60 gal) (18 lbs/ 103gal) (1ton/2000 lbs)

 = 0.345 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.345 tons/year

SAF = Seasonal Adjustment Factor, 0.3

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (0.345 tons/year) (0.3) / (7 days/week) (52 weeks)

= 0.000285 tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Residential Distillate Oil Consumption Emissions Estimates 

Pollutant SCFC

(103gal)

Emissions Factor 

(lbs/103gal)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 38,359.60 18 0.345 0.000285

CO 38,359.60 5 0.096 0.000079

VOC 38,359.60 0.7 0.013 0.000011

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States Department of 

Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, DC

2 American Fact Finder, US Census Bureau

. Internet Address:<http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?src=bkmk>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection Agency, Office 

of Air Quality Planning and Standards, Research Triangle Park, NC
Page | 37

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxideand Precursors of Ozone, Vol. I: General 

Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air Quality Planning and 

Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 38

Residential Natural Gas Consumption (SCC 2104006000)

Source Category Description Overview:

Residential Natural Gas Consumption refers to natural gas that is burned/ consumed in a residential setting. The 

general approach used to calculate emissions for this source category is to obtain residential natural gas consumption 

estimates from the local utility company, Memphis, Light, Gas and Water (MLGW); this information is provided in 

an annual publication titled “2011 MLGW Facts and Figures”1. Since MLGW is the main supplier of natural gas in 

Shelby County, this estimate represents countywide natural gas consumption. To calculate the emissions for oxides 

of nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, the 

residential natural gas consumption estimate for Shelby County, Tennessee is multiplied by AP-42 emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with housing data provides a representative method with which to 

apportion local residential natural gas usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

2. An estimate of total countywide residential natural gas consumption. This information is obtained from the 

MLGW publication “Facts and Figures, For Year Ending December 3, 2011”. According to this reference source, 

residential natural gas consumption in the Shelby County, Tennessee during calendar year 2011, is as follows:

19,673,047,000 FT3

Or

19,673 E6 FT3

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)2, are presented in the table below

 Table: AP-42 Natural Gas Emissions Factors 

Pollutant Emissions Factor (lbs/E6 Ft3) Reference

NOx 94 Table 1.4-1, residential furnace natural gas fired

CO 40 Table 1.4-1 residential furnace natural gas fired

VOC 5.5 Table 1.4-2 residential furnace natural gas fired

Calculation Methodology:

Emissions estimates of NOx, CO, and VOC are determined by multiplying the Shelby County, Tennessee 

residential natural gas consumption estimate, which is represented in the equation below as SCFC, by AP-42 

emission factors, and then performing the pound to ton unit conversion. For example, the annual emissions estimate 

for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (19,673,047,000 FT3) (94 lbs / 106FT3) (1 ton/ 2000 lbs)

= 924.63 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 924.63 tons/year

SAF = Seasonal Adjustment Factor, 0.3
Page | 39

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (924.63 tons/year) (0.3) / (7 days/week) (52 weeks)

= 0.7621 tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Residential Natural Gas Consumption Emissions Estimates 

Pollutant SCFC (E6 FT3) Emissions Factor 

(lbs/E6 FT3)

Emissions 

Estimate 

(tons/year)

Emissions Estimate 

(tons/day) 

NOx 19,673 94 924.631 0.7621

CO 19,673 40 393.46 0.3243

VOC 19,673 5.5 54.10075 0.0446

References:

1. Facts and Figures, For Year Ending December 3, 2011, Memphis Light, Gas, And Water, Memphis, Tennessee

. Internet Address:http:/www.mlgw.com/images/content/files/pdf/FactsFigures5-2013.pdf

2. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

3 Procedures for the Preparation of Emission Inventories for Carbon Monoxideand Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 40

Residential Liquified Petroleum Gas Consumption (SCC 2104007000)

Source Category Description Overview:

Residential Liquified Petroleum Gas Consumption refers to liquified petroleum gas that is burned/ consumed in a 

residential setting. The general approach to calculating emissions for this SCC is to take State of Tennessee 

residential liquified petroleum gas consumption estimates from the Energy Information Administration (EIA) 1and 

allocate it to the Shelby County, Tennessee-level using the methods described below. To calculate the emissions for 

oxides of nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds (VOC) for a typical summer day, 

the residential liquified petroleum gas consumption estimate at the Shelby County, Tennessee-level is multiplied by 

AP-42 emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with housing data provides a representative method with which to 

apportion local residential liquid petroleum gas usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide residential liquified petroleum gas consumption. This information is obtained 

from the.2011 State Energy Data System (SEDS)1, which is a comprehensive EIA database that tracks energy 

production, consumption, prices, and expenditure by state. According to this reference source, residential liquified 

petroleum gas consumption in the state of Tennessee during calendar year 2011, is as follows:

2,042,000 bbl (unit conversion: 2,042,000 bbl x 42 gal = 85,764,000 gal)

1 bbl

Or

85,764,000 gal

2. An estimate of the total number of housing units in the State of Tennessee and in Shelby County, Tennessee 

using distillate oil as a heating fuel. This information is provided in the 2011 American Fact Finder2, a publication 

of the U.S. Census Bureau2 and is presented in the table below. Ultimately, this data is used to develop a ratio of 

residential housing units (RHUratio) using liquified petroleum gas and is then used to allocate liquified petroleum gas 

consumption from the state level to the county.

Table: 2011 Number of Households in Tennessee and Shelby, County, Tennessee using LPG

House Heating Fuel Tennessee Shelby County, TN

Liquified Petroleum Gas 121,005 3404

Source: American Fact Finder , http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?src=bkmk

Specifically, RHUratio is the ratio of residential housing units in Shelby County, Tennessee to the residential housing 

units in Tennessee and, as the table indicates, it is equal to 3404/121,005or 0.02813

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

Table: AP-42 Liquified Petroleum Gas Emissions Factors 

Pollutant Emissions Factor (lbs/103gal) Reference

NOx (15+13)/2 =14 Table 1.5-1 , liquified petroleum gas fired

CO (8.4+7.5)/2 = 7.95 Table 1.5-1, liquified petroleum gas fired

VOC ((1.1-0.20) + (1.0-0.20))/2 = 0.85 Table 1.5-1, liquified petroleum gas fired
Page | 41

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The residential liquified petroleum gas allocation for Shelby County, Tennessee is determined by multiplying 

the 2011 residential liquified petroleum gas consumption for the State of Tennessee and the Residential Housing 

Units Ratio, as shown in the following equation:

SCFC = RHUratio x TNFC

where

SCFC = Shelby County, Tennessee Residential Liquified Petroleum Gas Consumption

RHUratio = Residential Housing Units Ratio

TNFC = State of Tennessee Residential Liquified Petroleum Gas Consumption 

Thus, the Shelby County, Tennessee residential liquified petroleum gas allocation is determined as follows:

SCFC = 3404/121,005x 85,764,000 gal

= 2,412,632 gal

2. Emissions estimates are determined by multiplying the Shelby County, Tennessee residential liquified petroleum 

gas consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to tons. For 

example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = SCFC x EF x (1ton/2000 lbs)

= (2,412,632 gal) (14 lbs/ 103gal) (1 ton/ 2000 lbs)

= 16.9 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 16.9 tons/year

SAF = Seasonal Adjustment Factor, 0.3

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (16.9 tons/year ) (0.3) / (7 days/week) (52 weeks)

= 0.0139 tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Residential liquified petroleum gas Consumption Emissions Estimates 

Pollutant SCFC

(103gal)

Emissions Factor 

(lbs/103gal)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 2,412,632 14 16.8884 0.013919

CO 2,412,632 7.95 9.5902 0.007904

VOC 2,412,632 0.85 1.0254 0.000845

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States 

Department of Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, 

DC. : 

2. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 42

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection 

Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxideand Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 43

Residential Kerosene Consumption (SCC 2104011000)

Source Category Description Overview:

Residential Kerosene Consumption refers to kerosene that is burned/ consumed in a residential setting. The general 

approach to calculating emissions for this SCC is to take State of Tennessee residential kerosene consumption 

estimates from the Energy Information Administration (EIA) 1and allocate it to the Shelby County, Tennessee-level 

using the methods described below. To calculate the emissions for oxides of nitrogen (NOx), carbon monoxide 

(CO), and volatile organic compounds (VOC) for a typical summer day, the residential kerosene consumption 

estimate at the Shelby County, Tennessee-level is multiplied by AP-42 emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage 

by sector. Using this information in combination with housing data provides a representative method with which to 

apportion local residential kerosene usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide residential kerosene consumption. This information obtained is from the.2011

State Energy Data System (SEDS)1, which is a comprehensive EIA database that tracks energy production, 

consumption, prices, and expenditure by state. According to this reference source, residential kerosene consumption 

in the state of Tennessee during calendar year 2011, is as follows:

51,000 bbl (unit conversion: 51,000 bbl x 42 gal = 2,142,000 gal)

1 bbl

Or

2,142,000 gal

2. An estimate of the total number of housing units in the State of Tennessee and in Shelby County, Tennessee 

using distillate oil as a heating fuel. This information is provided in the American Fact Finder2, a publication of the 

U.S. Census Bureau2and is presented in the table below. Ultimately, this data is used to develop a ratio of 

residential housing units (RHUratio) using kerosene and is then used to allocate kerosene consumption from the state 

level to the county.

Table: 2011 Number of Households in Tennessee and Shelby, County, Tennessee using Kerosene

House Heating Fuel Tennessee Shelby County, TN

Kerosene 16,752 340

Source: American Fact Finder , http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?src=bkmk

Source: ;http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=ACS_13_5YR_B25040&prodType=table

Specifically, RHUratio is the ratio of residential housing units in Shelby County, Tennessee to the residential 

housing units in Tennessee and, as the table indicates, it is equal to 340/16,752 or 0.02030

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: 

External Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

Table: AP-42 Kerosene Emissions Factors 

Pollutant Emissions Factor (lbs/103gal)* Reference

NOx 20 x (135,000/ 140,000) = 19.8 Table 1.3-1 boilers<100 million btu/hr, kerosene fired

CO 5 x (135,000/ 140,000) = 4.8 Table 1.3-1 boilers<100 million btu/hr, kerosene fired

VOC 0.34 x (135,000/ 140,000) = 033 Table 1.3-3 commercial boilers kerosene fired

*Note: 135,000/140,000 is the ratio of the heat content of kerosene to distillate oil
Page | 44

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The residential kerosene allocation for Shelby County, Tennessee is determined by multiplying the 2011

residential kerosene consumption for the State of Tennessee and the Residential Housing Units Ratio, as shown in 

the following equation:

SCFC = (RHUratio) (TNFC)

where,

SCFC = Shelby County, Tennessee Residential Kerosene Consumption

RHUratio = Residential Housing Units Ratio

TNFC = State of Tennessee Residential Kerosene Consumption 

Thus, the Shelby County, Tennessee residential kerosene allocation is determined as follows:

SCFC = 340/16,752 x 2,142,000 gal

= 43,474.21 gal

2. Emissions estimates are determined by multiplying the Shelby County, Tennessee residential kerosene 

consumption estimate by AP-42 emission factors, and then performing the conversion from pounds to tons. For 

example, the annual emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (43,474.21 gal) (19.8 lbs / 103gal) (1 ton / 2000 lbs)

= 0.4304 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.4304 tons/year

SAF = Seasonal Adjustment Factor, 0.3

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (0.4304 tons/year) (0.3) / (7 days/week) (52 weeks)

= 0.000355 tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Residential Kerosene Consumption Emissions Estimates 

Pollutant SCFC

(103gal)

Emissions Factor 

(lbs/103gal)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 43,474.21 19.8 0.4304 0.000355

CO 43,474.21 4.8 0.1043 0.000086

VOC 43,474.21 0.33 0.0072 0.0000060

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States Department of 

Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, DC. Internet Address: 

2. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, United States Environmental Protection Agency, Office 

of Air Quality Planning and Standards, Research Triangle Park, NC
Page | 45

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxide and Precursors of Ozone, Vol. I: General 

Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air Quality 

Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 46

Residential Wood Consumption (SCC 2104004000)

Source Category Description Overview:

Residential Wood Consumption refers to wood that is burned/ consumed in a residential setting. The general approach to 

calculating emissions for this SCC is to take State of Tennessee residential wood consumption estimates from the Energy 

Information Administration (EIA) 1and allocate it to the Shelby County, Tennessee-level using the methods described 

below. To calculate the emissions for oxides of nitrogen (NOx), carbon monoxide (CO), and volatile organic compounds 

(VOC) for a typical summer day, the residential wood consumption estimate at the Shelby County, Tennessee-level is 

multiplied by AP-42 emission factors.

Assumptions:

The Department of Energy, in the preparation of the State Energy Data Report (SEDS), surveys state energy usage by sector. 

Using this information in combination with housing data provides a representative method with which to apportion local 

residential wood usage to the county level. 

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of total statewide residential wood consumption. This information is obtained from the.2011 State Energy 

Data System (SEDS), which is a comprehensive EIA database that tracks energy production, consumption, prices, and 

expenditure by state. According to this reference source, residential wood consumption in the state of Tennessee during 

calendar year 2011, is as follows:

342,000 cords

2. An estimate of the total number of housing units in the State of Tennessee and in Shelby County, Tennessee using wood

as a heating fuel. This information is provided in the 2011 American Fact Finder, a publication of the U.S. Census Bureau 

and is presented in the table below. Ultimately, this data is used to develop a ratio of residential housing units (RHUratio) 

using wood as a primary heating source and is then used to allocate wood consumption from the state level to the county

Table: 2011 Number of Households in Tennessee and Shelby, County, Tennessee using Wood *

House Heating Fuel Tennessee Shelby County, TN

Fuel Oil 50,860 681

Source: American Fact Finder , http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?src=bkmk

Specifically, RHUratio is the ratio of residential housing units in Shelby County, Tennessee to the residential housing units in 

Tennessee and, as the table indicates, it is equal to 681/50,860or 0.01339

3. Emissions Factors for NOx, CO, and VOC, which are obtained from AP-42, Fifth Edition, Volume I, Chapter 1: External 

Combustion Source (U.S. Environmental Protection Agency, July 1998)3, are presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/ton) Reference

NOx 18.9 Table 1.5-1, wood fired

CO (8.4+7.5)/2 = 7.95 Table 1.5-1, wood fired

VOC 2.6 Table 1.5-1, wood fired
Page | 47

Calculation Methodology:

Emissions from this category are determined in two steps. 

1. The residential wood allocation for Shelby County, Tennessee is determined by multiplying the 2011 residential wood

consumption for the State of Tennessee and the Residential Housing Units Ratio, as shown in the following equation:

SCFC = (RHUratio) (TNFC)

where

SCFC = Shelby County, Tennessee Residential Wood Consumption

RHUratio = Residential Housing Units Ratio

TNFC = State of Tennessee Residential Wood Consumption 

Thus, the Shelby County, Tennessee residential wood allocation is determined as follows:

SCFC = (0.01339) (342,000 cords)

= 4579.38 cords

2. Emissions estimates are determined for by multiplying the Shelby County, Tennessee residential wood consumption 

estimate by AP-42 emission factors, and then performing the conversion from pounds to tons. For example, the annual 

emissions estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (SCFC) (EF) (1ton/2000 lbs)

= (4579.38 cords) (2.9 tons / 1cord) (2.6 lbs / ton) (1 ton /2000 lbs)

= 17.264 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 17.264 tons/year

SAF = Seasonal Adjustment Factor, 0.3

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (17.264 tons/year) (0.3) / (7 days/week) (52 weeks)

= 0.0142 tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with NOx in the 

table below. 

Table: 2011 Shelby County, Tennessee Residential Wood Consumption Emissions Estimates 

Pollutant SCFC

(cords)

Emissions Factor 

(lbs/ton)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 4579.38 2.6 17.264 0.0142

CO 4579.38 149 989.375 0.8154

VOC 4579.38 18.9 125.498 0.1034

Note: 1cord =2,90 tons
Page | 48

References:

1.State Energy Consumption Estimates 1960 - 2011 (formerly the State Energy Data Report), United States Department of 

Energy, Energy Information Administration, Office of Energy Markets and End Use, Washington, DC. Internet Address: 

2. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>

3. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, , United States Environmental Protection Agency, 

Office of Air Quality Planning and Standards, Research Triangle Park, NC

4 Procedures for the Preparation of Emission Inventories for Carbon Monoxide and Precursors of Ozone, Vol. I: General 

Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air Quality 

Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 
Page | 49

Bakeries (SCC 2302050000)

Source Category Description Overview:

Bakery emissions, which are primarily ethanol, result from yeast fermentation during the baking process of bread and 

bakery products. Ethanol is emitted through a vent with any combustion product gases. 

Assumptions:

Due to the lack of commercial/ retail bakery production data, the per capita method is assumed to be more representative of 

the emissions produced by this category in Shelby County, Tennessee.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. Emission factor for VOC - an emission factor of 0.35 lbs VOC/capita/year (Emission Inventory Improvement Program)

1

, 

was derived, based on a per capita consumption of 70 pounds per person and emissions for the sponge- dough method of 5 

pounds VOC per 1,000 pounds baked (because it yields a conservative emissions estimate).

2. 2011 Shelby County, Tennessee. population (Census Bureau)2– 935,088

Calculation Methodology:

Emissions from this category are determined as follows:

The VOC emissions associated with commercial/ retail bakeries operating in Shelby County, Tennessee are calculated using 

the per capita emission factor of 0.35 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (0.35 lbs VOC/person/year) (1ton/2000 lbs)

= 163.64 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 163.64 tons/year

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (163.64 tons/year) (1) / (7 days/week) (52 weeks)

= 0.450 tons/day

References:

1. Emission Inventory Improvement Program (EIIP), Volume III, Area Source Method Abstracts, Baked Goods at 

Commercial/Retail Bakeries, July 1999, United States Environmental Protection Agency, Office of Air Quality Planning and 

Standards, Research Triangle Park, NC

2. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 50

Wineries (red wine) (SCC 2302070005)

Source Category Description Overview:

Winery emissions result from the entrainment of ethanol by carbon dioxide during wine fermentation. Factors affecting 

ethanol emissions are handling techniques, temperature, process equipment design, and fermenting parameters. Other 

sources of emissions from the wine making process are blending, transferring, racking and storing of the wine.

Assumptions:

Due to the lack of data regarding wine type, red wine production was assumed to be 50 percent of the 5000 gallon annual 

total.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. The wine production amounts1for each winery operating in Shelby County during calendar year 2011. This information 

is displayed in the table below.

Table: 2011 Shelby County Winery Production Amounts 

Winery Wine Type Amount (gallons)

Old Millington Winery red 2500

2. Emissions Factor for VOC, which is provided in AP-42, Fifth Edition, Volume I, Chapter 9: Food and Agricultural 

Industries (U.S. Environmental Protection Agency, July 1998)2, are presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/103gal) Reference

VOC 4.6 Table 9.12.2, Wine and Brandy ( red wine)

Calculation Methodology:

The VOC emissions associated with this category are calculated using 2011 county-level wine production data and

emission factors obtained from AP-42. For example, the annual VOC emissions are determined as follows:

Annual VOC 2011 Total Red Wine Production)

 = (2,500 gallons) (4.6 lbs/103gallons/year) (1 ton/ 2000 lbs)

 = 0.00575 tons/yr

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 5.75 tons/year

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (0.00575 tons/year) (1) / (7 days/week) (52 weeks)

= 0.0000158 tons/day

References:

1. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, , United States Environmental Protection Agency, 

Office of Air Quality Planning and Standards, Research Triangle Park, NC
Page | 51

Wineries (white wine) (SCC 2302070005)

Source Category Description Overview:

Winery emissions result from the entrainment of ethanol by carbon dioxide during wine fermentation. Factors affecting 

ethanol emissions are handling techniques, temperature, process equipment design, and fermenting parameters. Other 

sources of emissions from the wine making process are blending, transferring, racking and storing of the wine.

Assumptions:

Due to the lack of data regarding wine type, white wine production was assumed to be 50 percent of the 5000 gallon annual 

total.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. The wine production amounts1for each winery operating in Shelby County during calendar year 2011. This information 

is displayed in the table below. 

Table: 2011 Shelby County Winery Production Amounts 

Winery Wine Type Amount (gallons)

Old Millington Winery white 2500

2. Emissions Factor for VOC, which is provided in AP-42, Fifth Edition, Volume I, Chapter 9: Food and Agricultural 

Industries (U.S. Environmental Protection Agency, July 1998)2, are presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/103gal) Reference

VOC 1.8 Table 9.12.2, Wine and Brandy (white wine)

Calculation Methodology:

The VOC emissions associated with this category are calculated using 2011 county-level wine production data and 

emission factors obtained from AP-42. For example, the annual VOC emissions are determined as follows:

2011 conversion)

 = (2,500 gallons) (1.8 lbs/gallons/year) (1 ton/ 2000 lbs)

 = 0.00225 tons/yr

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 2.25 tons/year

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (0.00225 tons/year) (1) / (7 days/week) (52 weeks)

= 0.000000618 tons/day

References:

1. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, , United States Environmental Protection Agency, 

Office of Air Quality Planning and Standards, Research Triangle Park, NC
Page | 52

Breweries (SCC 2302070001)

Source Category Description Overview:

Breweries emissions result from compounds such as ethanol, myrcene, ethyl acetate and higher alcohols resulting from 

the brewing process. There are two brewery emission factors, which differ based on facility production size (i.e., a smaller 

emission factor is used for facilities with more than 60,000 barrels production, and a larger factor for facilities producing

60,000 barrels or less).

Assumptions:

Brewery amounts are assumed at the lower range of the “Regional microbrewery” definition which is 15,000 to 600,000 

barrels per year. This assumption provides a conservative estimate of emissions from this source category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. The beer production amounts1for each brewery operating in Shelby County during calendar year 2011. This information 

is displayed in the table below. 

Table: 2011 Shelby County brewery Production Amounts 

Brewery Amount (barrels) Amount (gallons)

Wiseacre Brewing Company 15,000 465,000

Memphis Made Brewing Company 15,000 465,000

High Cotton Brewing Company 15,000 465,000

Ghost River Brewing 15,000 465,000

Total 1,860,000

Note: Microbreweries produce fewer than 15,000 barrels of beer a year. A regional craft brewery is a brewery with an annual beer production

between 15,000 and 6,000,000 barrels A barrel is 31 U.S. gallons.

2. Emissions Factor for VOC, which is provided in AP-42, Fifth Edition, Volume I, Chapter 9: Food and Agricultural 

Industries (U.S. Environmental Protection Agency, July 1998)2, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/103gal) Reference

VOC 112.457 Table 9.12.1, Malt Beverages

Calculation Methodology:

The VOC emissions associated with this category are calculated using 2011 county-level micro-brewery production data 

and emission factors obtained from AP-42. For example, the annual VOC emissions are determined as follows:

2011 Micro-Beer Micro-Beer Emission Factor) (pound to ton conversion)

 = (1,860,000 gallons) (112.457lbs/1000 gallons/year) (1 ton/ 2000 lbs)

= 104.585tons/yr

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 104.585tons/year

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7days/ week 
Page | 53

Substituting this information into the equation gives

= (104.585tons/year) (1) / (7 days/week) (52 weeks)

= 0.2873 tons/day

References:

1. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, , United States Environmental Protection Agency, 

Office of Air Quality Planning and Standards, Research Triangle Park, NC
Page | 54

Architectural Coatings (SCC 2401001000)

Source Category Description Overview:

Architectural Coatings emissions include the application of paint, primer, varnish or lacquer to architectural surfaces, 

and the use of solvents as thinners and for cleanup. 

Assumptions:

Brewery amounts are assumed at the lower range of the “Regional microbrewery” definition which is 15,000 to 600,000 

barrels per year. This assumption provides a conservative estimate of emissions from this source category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: NEI Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 2.34 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with architectural surface coating in Shelby County, Tennessee are calculated using the per 

capita emission factor of 2.34 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (2.34 lbs VOC/person/year) (1ton/2000 lbs)

= 1094.05 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 1094.05 tons

SAF = Seasonal Adjustment Factor, 1.3

WAF = Weekly Activity Factor, 5days/ week 

Substituting this information into the equation gives

= (1094.05 tons/year) (1.3)/ (5 days/week) (52 weeks/ year)

= 5.47 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: : <http://www.census.gov/econ/cbp/download/12_data>
Page | 55

Auto Refinishing (SCC 2401005000)

Source Category Description Overview:

Auto refinishing emissions consist of vehicle preparation, primer application, topcoat application and spray equipment 

cleaning. These operations result in significant VOC emissions.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 4411, 4412, and 81112 which are provided in the 2011 County Business 

Patterns1. This information is presented in the table. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

4411 Automobile Dealers 3617

4412 Other Motor Vehicle Dealers 0

81112 Automotive Mechanical and Electrical Repair and Maintenance 732

Totals 4349

Source: County Business Patterns

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 94.69 2011 NEI, Auto Refinishing

Calculation Methodology:

The VOC emissions associated with automobile refinishing in Shelby County, Tennessee are calculated using the per capita 

emission factor of 94.69 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the annual VOC 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (4379 persons) (94.69 lbs VOC/person/year) (1ton/2000 lbs)

= 205.90 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 205.90 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (205.90 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.7919 tons/day
Page | 56

References:

1. American Fact Finder, US Census Bureau

. Internet Address: : <http://www.census.gov/econ/cbp/download/12_data>
Page | 57

Traffic Marking (SCC 2401008000)

Source Category Description Overview:

Traffic marking emissions are associated with marking of highway center lines, edge stripes, and directional markings and 

painting on other paved and non-paved surfaces, such as markings in parking lots. There are two types of traffic marking 

paints, water-based and solvent-based paints. Solvent-based paint typically contains substantially higher volatile solvent

contents than water-based paint. VOC emissions result from the evaporation of organic solvents during and shortly after the 

application of the marking paint. Solvent- and water-based paints have about the same durability; both begin to deteriorate 

about a year after their application.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, which is provided in AP-42, Fifth Edition, Volume I, Chapter 4: Evaporation Loss Sources 

(U.S. Environmental Protection Agency, July 1998)2, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 1.9 Table 4.2.1, Nonindustrial Surface Coating

Calculation Methodology:

The VOC emissions associated with traffic marking in Shelby County, Tennessee are calculated using the per capita 

emission factor of 1.9 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual emissions 

estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (1.9 lbs VOC/person/year) (1ton/2000 lbs)

= 888.33 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 888.33 tons

SAF = Seasonal Adjustment Factor, 1.3

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (888.33 tons/year) (1.3)/ (5 days/week) (52 weeks/ year)

= 4.4417 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 58

2. Compilation of Air Pollutant Emission Factors, AP-42 Fifth Edition, , United States Environmental Protection Agency, 

Office of Air Quality Planning and Standards, Research Triangle Park, NC
Page | 59

Factory Finished Wood (SCC 2401015000)

Source Category Description Overview:

Factory finished wood emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to the 

surface of a wood object for decorative or protective purposes. The coating products, which are solvent based, emit VOC 

emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) code 321 which is provided in the 2011 County Business Patterns1. This 

information is presented in the table. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

321 Factory Finished Wood 659

Totals 659

Source: County Business Patterns

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 48.07 2011 NEI, Factory Finished Wood

Calculation Methodology:

The VOC emissions associated with factory finished wood in Shelby County, Tennessee are calculated using the per capita 

emission factor of 48.07 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (659 persons) (48.07 lbs VOC/person/year) (1ton/2000 lbs)

= 15.83 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 15.83 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 
Page | 60

Substituting this information into the equation gives

= (15.83 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.0609 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 61

Surface Coating Wood Furniture (SCC 2401020000)

Source Category Description Overview:

Wood Furniture emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to the 

surface of an object of wood furniture for decorative or protective purposes. The coating products, which are solvent based, 

emit VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 337110, 337121, 337122, 337127, 337129, 337211, 337212, 337215, and 

33911/ which are provided in the 2011 County Business Patterns1. This information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

337110 Wood Furniture 95

337121 Wood Furniture 0

337122 Wood Furniture 0

337127 Wood Furniture 0

337129 Wood Furniture 0

337211 Wood Furniture 104

337212 Wood Furniture 0

337215 Wood Furniture 0

33911/ Wood Furniture (50% of this NAICS value of 4372) 2294

Totals 2493

Source: County Business Patterns

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 524.13 2011 NEI, Wood Furniture

Calculation Methodology:

The VOC emissions associated with wood furniture in Shelby County, Tennessee are calculated using the per capita 

emission factor of 244 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (2493 persons) (524.13 lbs VOC/person/year) (1ton/2000 lbs)

= 653.32 tons/year
Page | 62

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 653.32 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (653.32 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 2.5128 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 63

Surface Coating Metal Furniture (SCC 2401025000)

Source Category Description Overview:

Metal Furniture emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to the 

surface of an object of metal furniture for decorative or protective purposes. The coating products, which are solvent based, 

emit VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 337124, 337127, 337214, 337215, and 33911/ which are provided in the 

2011 County Business Patterns1. This information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

337124 Metal Furniture 0

337127 Metal Furniture 0

337214 Metal Furniture 0

337215 Metal Furniture 0

33911/ Metal Furniture (50% of this NAICS value of 4372) 2294

Totals 2294

Source: County Business Patterns

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 887.8 2011 NEI, Metal Furniture

Calculation Methodology:

The VOC emissions associated with surface coating metal furniture in Shelby County, Tennessee are calculated using the 

per capita emission factor of 887.8 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the 

annual emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (2294persons) (887.8 lbs VOC/person/year) (1ton/2000 lbs)

= 1018.31 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 64

Annual Emissions = 1018.31 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (1018.31 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 3.920 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 65

Surface Coating Paper, Foil, and Film (SCC 2401030000)

Source Category Description Overview:

Metal Furniture emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to the 

surface of an object of paper, foil, and film for decorative or protective purposes. The coating products, which are solventbased, emit VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An emission factor of 0.109 lb VOC/capita/year was developed from the 2011 U.S. population of 312,780,968 people 

and the amount of solvents used for paper, foil, which was 1,691,000 pounds in 2007 based on Report #2357, Solvents to 

2011 produced by The Freedonia Group, 2008, as follows:

34.1 million pounds / 312780968 people =0.109 lbs/person/year

2. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

Calculation Methodology:

Emissions from this category are determined as follows:

The VOC emissions associated with paper, foil, and film surface coating operations in Shelby County, Tennessee are 

calculated using the per capita emission factor of 0.109 lb VOC/capita/year developed from the amount of solvents used for 

paper, foil and film and the 2011 Shelby County population. For example, the annual emissions estimate for volatile organic 

compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (0.109 lbs VOC/person/year) (1ton/2000 lbs)

= 50.96 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 50.92 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (50.92 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.19601 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 66

Metal Can Coating Manufacturing (SCC 2401040000)

Source Category Description Overview:

Metal Can Coating emissions, result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to the 

surface of an object such as a metal can for decorative or protective purposes. The coating products, which are solvent-based, 

emit VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the industrial employment for metal can coating in Shelby County, Tennessee, not included with point 

sources, is provided in in the table. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

Shelby County, TN Metal Can Coating Employment Employees

Southern Containers 5- 9 

Metal Can Coating Tennessee Container 1-4

Totals 9.5

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 3035 2011 NEI, Metal Can Coating 

Calculation Methodology:

The VOC emissions associated with metal can coating in Shelby County, Tennessee are calculated using the per capita 

emission factor of 3035 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (9.5persons) (3035 lbs VOC/person/year) (1ton/2000 lbs)

= 14.42 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 14.42 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 
Page | 67

Substituting this information into the equation gives

= (14.42 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.0555 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 68

Metal Sheet, Strip, and Coil Manufacturing (SCC 2401045000)

Source Category Description Overview:

Metal Sheet, Strip, and Coil emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) 

to the surface of an object of metal sheet, strip, and/or coil for decorative or protective purposes. The coating products, which 

are solvent-based, emit VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 332812, 339911, 339912, and 339914 which are provided in the 2011

County Business Patterns1. This information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

332812 Metal Sheet, Strip, and Coil 122

339911 Metal Sheet, Strip, and Coil 0

339912 Metal Sheet, Strip, and Coil 0

339914 Metal Sheet, Strip, and Coil 0

Totals 122

Source: County Business Patterns

/

2. Emissions Factor for VOC, as provided in EPA-450/4-91-016 2

Calculation Methodology:

The VOC emissions associated with sheet metal, strip, and coil surface coating in Shelby County, Tennessee are calculated 

using the per capita emission factor of 2877 lbs VOC/person/year and the 2011 Shelby County employment data. For 

example, the annual emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (122 persons) (2877 lbs VOC/person/year) (1ton/2000 lbs)

= 175.497 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 175.497 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (175.497 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.6749 tons/day
Page | 69

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>

2 Procedures For The Preparation Of Emission Inventories For Carbon Monoxide And Precursors of Ozone, Volume I: 

General Guidance For Stationary Sources, United States Environmental Protection Agency, Office of Air Quality Planning 

and Standards, Research Triangle Park NC 277711, EPA-450/4-91-016, May 1991, Table 4.3-6, page 4-24
Page | 70

Surface Coating Machinery and Equipment (SCC 2401055000)

Source Category Description Overview:

Machinery and Equipment emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to 

the surface of an object of machinery and/or machinery for decorative or protective purposes. The coating products, which 

are solvent based, emit VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 3331//, 3332//, 3333//, and 33341// which are provided in the 2011 County 

Business Patterns1. This information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

3331// Machinery and Equipment 2326

3332// Machinery and Equipment 86

3333// Machinery and Equipment 182

33341// Machinery and Equipment 0

Totals 2594

Source: County Business Patterns

/

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 51.64 2011 NEI, Metal Furniture

3. Emissions Factor for VOC, as provided in EPA-450/4-91-016 2

Calculation Methodology:

The VOC emissions associated with machinery and equipment surface coating in Shelby County, Tennessee are calculated 

using the per capita emission factor of 51.64 lbs VOC/person/year and the 2011 Shelby County employment data. For 

example, the annual emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (2594persons) (51.64 lbs VOC/person/year) (1ton/2000 lbs)

= 66.97 tons/year
Page | 71

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 66.97 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (66.97 tons/year) (1)/(5 days/week) (52 weeks/ year)

= 0.2576 tons/day

Control Factor:

No controls were assumed for this category

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 72

Appliances (SCC 2401060000)

Source Category Description Overview:

Appliance emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to the surface of 

an object such as an appliance for decorative or protective purposes. The coating products, which are solvent based, emit 

VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An emission factor of 0.06 lbs VOC/capita/year was developed from the 2011 U.S. population of 312,780,968 people and 

the amount of solvents used for appliances, which was 18,600,000 pounds in 2007 based on Report #2357, Solvents to 2011

produced by The Freedonia Group, 2008, as follows:

18.6 million pounds / 312780968 people = 0.06 lbs/person/year

2. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

Calculation Methodology:

Emissions from this category are determined as follows:

The VOC emissions associated with appliance surface coating operations in Shelby County, Tennessee are calculated using 

the per capita emission factor of 0.06lb VOC/capita/year developed from the amount of solvents used for paper, foil and film 

and the 2011 Shelby County population. For example, the annual emissions estimate for volatile organic compounds, VOC, 

is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (0.06 lbs VOC/person/year) (1ton/2000 lbs)

= 28.05 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 28.05 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (28.05 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.1079 tons/da

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 73

Electronic and other Electrical Coatings (SCC 2401065000)

Source Category Description Overview:

Electronic and other Electrical Coatings emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, 

varnish, etc.) to the surface of an electronic and/or electrical object for decorative or protective purposes. The coating 

products, which are solvent based, emit VOC emissions as the result of solvent evaporation during the drying or curing 

process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 331319, 331422, 331491, 335921, 335929, and 33531/ which are 

provided in the 2011 County Business Patterns1. This information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

331319 Electronic and Other Electrical Coating 0

331422 Electronic and Other Electrical Coating 0

331491 Electronic and Other Electrical Coating 0

335921 Electronic and Other Electrical Coating 0

335929 Electronic and Other Electrical Coating 0

33531/ Electronic and Other Electrical Coating 103

Totals 103

Source: County Business Patterns

/

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 31.92 2011 NEI, Electronic and Other Electrical Coating 

Calculation Methodology:

The VOC emissions associated with electronic and other electrical coating in Shelby County, Tennessee are calculated using 

the per capita emission factor of 31.92 lbs VOC/person/year and the 2011 Shelby County employment data. For example, 

the annual emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (103 persons) (31.92 lbs VOC/person/year) (1ton/2000 lbs)

= 1.64 tons/year

Or

= (1.64 tons/year) (1year/365 days)

= 0.0045 tons/day
Page | 74

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 75

Motor Vehicles and Parts (SCC 2401070000)

Source Category Description Overview:

Motor Vehicles and Parts emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to 

the surface of an electronic and/or electrical object for decorative or protective purposes. The coating products, which are 

solvent-based, emit VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 3361//, 3362//, and 3363// which are provided in the 2011 County Business 

Patterns1. This information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

3361// Motor Vehicles and Parts 472

3362// Motor Vehicles and Parts 0

3363// Motor Vehicles and Parts 0

Totals 472

Source: County Business Patterns

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 194 2011 NEI, Motor Vehicles and Parts

Calculation Methodology:

The VOC emissions associated with motor vehicles and parts surface coating in Shelby County, Tennessee are calculated using 

the per capita emission factor of 194 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the 

annual emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (277 persons) (194 lbs VOC/person/year) (1ton/2000 lbs)

= 45.78 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 45.78 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 
Page | 76

Substituting this information into the equation gives

= (45.78 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.1761 tons/da

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 77

Surface Coating Aircraft (SCC 2401070000)

Source Category Description Overview:

Surface Coating Aircraft emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to 

the surface of an aircraft for decorative or protective purposes. The coating products, which are solvent-based, emit VOC 

emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 3364// which are provided in the 2011 County Business Patterns1. This 

information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

3364// Surface Coating Aircraft 153

Totals 153

Source: County Business Patterns

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 12.98 2011 NEI, Surface Coating Aircraft

Calculation Methodology:

The VOC emissions associated with aircraft surface coating in Shelby County, Tennessee are calculated using the per capita 

emission factor of 12.98 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (266 persons) (12.98 lbs VOC/person/year) (1ton/2000 lbs)

= 0.993 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.993 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 
Page | 78

Substituting this information into the equation gives

= (0.993 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.00382 tons/da

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 79

Marine Surface Coating (SCC 2401080000)

Source Category Description Overview:

Marine Surface Coating emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to 

the surface of an aircraft for decorative or protective purposes. The coating products, which are solvent-based, emit VOC 

emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 3366// which are provided in the 2011 County Business Patterns1. This 

information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

3366// Marine Surface Coating 258

Totals 258

Source: County Business Patterns

/

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 225.4 2011 NEI, Marine Surface Coating

Calculation Methodology:

The VOC emissions associated with marine surface coating in Shelby County, Tennessee are calculated using the per capita 

emission factor of 225.4 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (258 persons) (225.4 lbs VOC/person/year) (1ton/2000 lbs)

= 29.08 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 29.08 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (29.08 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.1119 tons/da

References:

1. American Fact Finder, US Census Bureau
Page | 80

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 81

Locomotive Surface Coating (SCC 2401085000)

Source Category Description Overview:

Locomotive Surface Coating emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) 

to the surface of an aircraft for decorative or protective purposes. The coating products, which are solvent based, emit VOC 

emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 3365// which are provided in the 2011 County Business Patterns1. This 

information is presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

3365// Locomotive Surface Coating 472

Totals 472

Source: County Business Patterns

/

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 208.3 2011 NEI, Locomotive Surface Coating

Calculation Methodology:

The VOC emissions associated with locomotive surface coating in Shelby County, Tennessee are calculated using the per 

capita emission factor of 208.3 lbs VOC/person/year and the 2011 Shelby County employment data. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (472 persons) (208.3 lbs VOC/person/year) (1ton/2000 lbs)

= 49.16 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 49.16 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 
Page | 82

Substituting this information into the equation gives

= (49.16 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.1891 tons/da

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 83

Industrial Maintenance Coatings (SCC 2401100000)

Source Category Description Overview:

Industrial Maintenance Coatings emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, 

varnish, etc.) to the surface of an industrial object for decorative, maintenance and/ or protective purposes. The coating 

products, which are solvent-based, emit VOC emissions as the result of solvent evaporation during the drying or curing 

process.

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 0.603 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with industrial maintenance coatings in Shelby County, Tennessee are calculated using the 

per capita emission factor of 0.603 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (0.603 lbs VOC/person/year) (1ton/2000 lbs)

= 281.92 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 281.92 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 
Page | 84

Substituting this information into the equation gives

= (281.92 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 1.0843 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 85

Other Special Purpose Coatings (SCC 2401200000)

Source Category Description Overview:

Other Special Purpose Coatings emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, 

varnish, etc.) to the surface of an industrial object for decorative, maintenance and/ or protective purposes. The coating 

products, which are solvent based, emit VOC emissions as the result of solvent evaporation during the drying or curing 

process.

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Weekly activity, WAF = 7 days/week

3. Seasonal Adjustment factor, SAF = 1

4. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 0.0064 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with other special purpose coating in Shelby County, Tennessee are calculated using the per 

capita emission factor of 0.0064 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (0.0064 lbs VOC/person/year) (1ton/2000 lbs)

= 2.99 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 2.99 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (2.99 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 0.0115 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 86

Degreasing (SCC 2415000000)

Source Category Description Overview:

Degreasing emissions result from applying a thin layer of solvents to clean the surfaces. The degreasing products, which are 

solvent- based, emit VOC emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

Industry employment and per employee emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. An estimate of the total industrial employment in Shelby County, Tennessee as represented by the North American 

Industrial Classification System (NAICS) codes 331///, 332///, 333///, 334///, 335///, 336///,337///, 339///, 441///, 483///, 

484///, 485///, 488///, 8111//, and 8112// which are provided in the 2011 County Business Patterns1. This information is 

presented in the table below. 

Table: 2011 Industrial Employment Data for the State of Tennessee and Shelby, County, Tennessee

NAICS NAICS Description Shelby County, TN

331/// Degreasing 0

332/// Degreasing 2899

333/// Degreasing 2326

334/// Degreasing 1276

335/// Degreasing 0

336/// Degreasing 472

337/// Degreasing 272

339/// Degreasing 4959

441/// Degreasing 5516

483/// Degreasing 0

484/// Degreasing 11830

485/// Degreasing 1249

488/// Degreasing 5289

8111// Degreasing 2075

8112// Degreasing 879

 Totals 39042

Source: County Business Patterns

2. Emissions Factor for VOC, as used in the 2011 National Emissions Inventory (NEI), is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per employee) Reference

VOC 36.96 2011 NEI, Degreasing

Calculation Methodology:

The VOC emissions associated with degreasing in Shelby County, Tennessee are calculated using the per capita emission factor of 36.96 

lbs VOC/person/year and the 2011 Shelby County employment data. For example, the annual emissions estimate for volatile 

organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County employment) (Emission Factor) (pound-to-ton conversion)

= (39042 persons) (36.96 lbs VOC/person/year) (1ton/2000 lbs)

= 721.49 tons/year
Page | 87

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 721.49 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5 days/ week 

Substituting this information into the equation gives

= (721.49 tons/year) (1)/ (5 days/week) (52 weeks/ year)

= 2.775 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_dat>
Page | 88

Drycleaner (SCC 2420000000)

Source Category Description Overview:

Drycleaner emissions shown in the table below were submitted to the Shelby County Health Department, Pollution Control 

Section (SCHD-PCS) by each drycleaner in fulfillment of permit conditions which require periodic reporting of emissions 

information. Furthermore, it is important to note that a “Responsible Company Official” is required to sign a statement 

guaranteeing the accuracy of the emissions information submitted to SCHD-PCS.

2011 Shelby County, Tennessee Dry Cleaning Emissions

SOURCE# COMPANY NAME “PERC” 

(tons)

“PETRO” 

(tons)

Total VOC 

Emissions 

(tons) 9006 CARWILE'S CUSTOM CLEANERS 0.15 1.27 1.42

9014 SMART SERVICES, LLC. 0.68 0 0.68

9015 MOON'S DRYVE CLEANERS dba 0 0 0

9017 YOUR CLEANER dba 10 0 10

9019 FASHION CLEANERS dba 0.1 0.05 0.15

9026 GENERAL CLEANERS 0.37 0 0.37

9028 GRAHAMWOOD CLEANERS dba 0.4 0 0.4

9029 HAPPY DAY LAUNDRY & CLEANERS, 

INC

2.2 0 2.2

9033 KRAUS MODEL CLEANERS 0 0 0

9035 CONTINENTAL CLEANERS I dba 1.49 0 1.49

9037 RALEIGH 1 HR CLEANERS dba 0.39 0 0.39

9039 JUN CORPORATE, INC 0.2 0 0.2

9042 MERCURY VALET SERVICE 0.33 0 0.33

9043 MT MORIAH CLEANERS dba 0.4 0 0.4

9044 MY VALET CLEANERS dba 0.1 0 0.1

9045 NORTHSIDE LAUNDRY, INC 0.3 0 0.3

9050 PERRY'S ONE HOUR CLEANERS 0.1 0.06 0.16

9052 PETER PAN CLEANERS dba 0.2 0 0.2

9053 POPLAR PLAZA CLEANERS dba 0.28 0.17 0.45

9059 UNION DRYVE CLEANERS, LLC 0.3 0 0.3

9060 SHEPPARD'S EXCLUSIVE CLEANERS dba 0.2 0 0.2

9073 WHITE SWAN CLEANERS 0.3 0 0.3

9078 CONTINENTAL CLEANERS II dba 0

9083 NUNNERY'S EXCLUSIVE CLEANERS 0.2 0.54 0.74

9085 DMC CLEANERS dba 0

9089 J & M PRO CLEANERS CORP 0.3 0 0.3

9093 COUSINS CLEANERS dba 0.2 0 0.2

9096 CRAZY CLEANERS dba 0

9099 LYONS ENTERPRISES 0.19 0 0.19

9300 KING CLEANERS dba 0

9304 FINE CLEANERS 0 0.36 0.36

9305 DRAKE CLEANERS 0 1.63 1.63

9307 GUY'S CLEANERS 0 0.73 0.73

Totals 19.38 4.81 24.19

In addition, the VOC emissions associated with dry cleaning in Shelby County, Tennessee are calculated using one of the

equations indicated below. For dry cleaning facilities using perchloroethylene, VOC emissions are determined as follows:

VOC emissions (tons) = (Perchloroethylene Usage gallons) (0.005 tons/lbs)

And, for dry cleaning facilities using petroleum, VOC emissions are determined as follows:

VOC emissions (tons) = (Petroleum Usage gallons) (0.0033 tons/lbs)

As indicated in the table, total VOC emissions from this category result from summing all of the perchloroethylene amounts 

and all of the petroleum amounts then adding these totals together to yield a 2011 Dry cleaning VOC emissions total of 

24.19tons.
Page | 89

The Summer Season Day VOC emissions associated with this category are determined, as follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks) 

Where

Annual Emissions = 14tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5days/ week 

Substituting this information into the equation gives

= (24.19 tons/year) (1)/ (5 days/week) (52 weeks)

= 0.094 tons/day

.
Page | 90

Graphic Arts (SCC 2425000000)

Source Category Description Overview:

Graphic Arts emissions result from applying a thin layer of coating (e.g. paint, lacquer, enamel, varnish, etc.) to the 

surface of an industrial object for decorative purposes. The coating products, which are solvent-based, emit VOC 

emissions as the result of solvent evaporation during the drying or curing process.

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 4.4 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with graphic arts in Shelby County, Tennessee are calculated using the per capita emission 

factor of 0.0064 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual emissions estimate 

for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088persons) (4.4 lbs VOC/person/year) (1ton/2000 lbs)

= 2057.19 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 2057.19 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (2057.19 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 5.6516 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 91

Consumer Personal Care Products (SCC 2460100000)

Source Category Description Overview:

Consumer Personal Care Products emissions result from the evaporation of the solvent contained in the product or from

the propellant

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 1.9 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with consumer personal care products in Shelby County, Tennessee are calculated using the 

per capita emission factor of 1.9 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088persons) (1.9 lbs VOC/person/year) (1ton/2000 lbs)

= 888.334 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 888.334 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week

Substituting this information into the equation gives

= (888.334 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 2.440 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 92

Consumer Household Cleaning Products (SCC 2460200000)

Source Category Description Overview:

Household Cleaning Products; emissions result from the evaporation of the solvent contained in the product or from the 

propellant

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,008

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 1.8 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with consumer personal care products in Shelby County, Tennessee are calculated using the 

per capita emission factor of 1.8 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,008persons) (1.8 lbs VOC/person/year) (1ton/2000 lbs)

= 841.5792 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 841.5792 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (841.5792 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 2.3120 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 93

Auto Aftermarket Products (SCC 2460400000)

Source Category Description Overview:

Auto Aftermarket Products emissions result from the evaporation of the solvent contained in the product or from the 

propellant

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 1.36 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with consumer personal care products in Shelby County, Tennessee are calculated using the 

per capita emission factor of 1.36 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (939,465 persons) (1.36 lbs VOC/person/year) (1ton/2000 lbs)

= 635.86 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 635.86 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (635.86 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 1.7469 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 94

Coatings and Related Products (2460500000)

Source Category Description Overview:

Coatings and Related Products emissions result from the evaporation of the solvent contained in the product or from the 

propellant

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 0.95 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with consumer personal care products in Shelby County, Tennessee are calculated using the 

per capita emission factor of 0.95lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (0.95lbs VOC/person/year) (1ton/2000 lbs)

= 444.17 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 444.17 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (444.17 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 1.220 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 95

Adhesives and Sealants (2460600000)

Source Category Description Overview:

Adhesives and Sealants emissions result from the evaporation of the solvent contained in the product or from the 

propellant

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 0.57 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with consumer personal care products in Shelby County, Tennessee are calculated using the 

per capita emission factor of 0.57lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (0.57 lbs VOC/person/year) (1ton/2000 lbs)

= 266.50 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 266.50 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (266.50 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.7321 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 96

FIFRA Regulated Products

Source Category Description Overview:

FIFRA Regulated Products emissions, 2460800000, result from the evaporation of the solvent contained in the product or 

from the propellant

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 1.78 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with consumer personal care products in Shelby County, Tennessee are calculated using the 

per capita emission factor of 1.78 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (1.78 lbs VOC/person/year) (1ton/2000 lbs)

= 832.23 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 832.23 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (832.23 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 2.286 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 97

Miscellaneous Products (SCC 2460900000)

Source Category Description Overview:

Miscellaneous Products emissions, 2460900000, result from the evaporation of the solvent contained in the product or from 

the propellant

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/yr/per capita) Reference

VOC 0.07 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with consumer personal care products in Shelby County, Tennessee are calculated using the 

per capita emission factor of 0.07 lbs VOC/capita/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (935,088persons) (0.07 lbs VOC/person/year) (1ton/2000 lbs)

= 32.73 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 32.73 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (32.73 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.08991 tons/day

References:

1. American Fact Finder, US Census Bureau

. Internet Address: <http://www.census.gov/econ/cbp/download/12_data>
Page | 98

Pesticide Application (All FIFRA Related Products FIFRA)

Source Category Description Overview:

Pesticide Application emissions, 2461800000, result from the evaporation of the solvent contained in the product or from the 

propellant

Assumptions:

County harvested acres and active ingredient per acre emissions factor provide a representative method to estimate local 

emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. Harvested acres (note: 2011 Ag data for Shelby was not located and because 2012 

Census of Agriculture data is believed to be representative of agricultural operations in 2011, it was used instead) –

Table: AP-42 Emissions Factors 

Crop (acres) Reference

Cotton 16,00 ERTAC Emissions Factors

Corn 9,900

Soybean 37,000

Wheat 4,900

Total 67,800

2. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/acre) Reference

VOC 1.59 ERTAC Emissions Factors

Calculation Methodology:

The VOC emissions associated with consumer personal care products in Shelby County, Tennessee are calculated using the 

per capita emission factor of 1.59 lbs VOC/acre/year and the 2011 Shelby County population. For example, the annual 

emissions estimate for volatile organic compounds, VOC, is determined as follows:

Emissions of VOC = (Shelby County population) (Emission Factor) (pound-to-ton conversion)

= (67,800 acres) (1.59 lbs /acres/year) (1ton/2000 lbs)

= 53.90 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 36.70 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 
Page | 99

Substituting this information into the equation gives

= (53.90 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.14808 tons/day

Control Factor:

No controls were assumed for this category

References:

1. Census of Agriculture, US Department of Agriculture

. Internet Address: <http://www.agcensus.usda.gov/Publications/2011/Full_Report/Volume_1,_Chapter_2_County_Level/Tennessee/>
Page | 100

Cutback Asphalt Paving (SCC 2461021000)

Source Category Description Overview:

Cutback asphalt is a type of liquefied road surface that is prepared by blending or "cutting back" asphalt cement with various 

kinds of petroleum distillates. VOC emissions occur as the asphalt cures.

Assumptions:

Consumption data and per barrel emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Emulsified Asphalt Usage data for PADD II Midwest, Midwest East – 25,289 short tons 1

2. 2011 VMT for PADDII Midwest, Midwest East, source FHWA Highway Statistics 1

Table: 2011 PADDII State Asphalt Usage and related VMT 

State PADD II Midwest East VMT (million miles)

Illinois 139,498

Indiana 97,066

Kentucky 79,220

Michigan 122,086

Ohio 123,247

Tennessee 95,492

Total 656,609,

3. 2011 Shelby County, Tennessee VMT total for all roadways, source TDOT 2 – 8,818,143,040 miles

4. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: 2011NEI Emissions Factors 

Pollutant Emissions Factor (lbs/barrel) Reference

VOC 88 ERTAC Emissions Factors

Calculation Methodology:

The Asphalt Institute tracks asphalt usage data for the United States and Canada. According to this database, Tennessee

cutback asphalt usage data, which is represented in the PADD II Midwest East District, is aggregated with similar data for 

the states of Illinois, Indiana, Kentucky, Michigan, Ohio, and Tennessee. To isolate the Tennessee portion of this aggregate 

number, the 2011 PADDII Midwest East Cutback Asphalt Usage total of 25,289 tons is multiplied by the ratio of the annual 

2011 Tennessee VMT over the annual 2011 VMT for all of the states represented in PADD II Midwest East District (which 

again is Illinois, Indiana, Kentucky, Michigan, Ohio, and Tennessee). The VMT data used for this analysis is provided in the 

Federal Highway Administration’s (FHWA) annual 2011 Highway Statistics report. The Tennessee Cutback Asphalt Usage 

is calculated as follows:

Tennessee Emulsified Asphalt Usage = (25,289 tons/ 656,609 PADD II ADVMT)*(95,492 (TN ADVMT)

 = 3,677.83 TN- tons
Page | 101

Using the state usage estimate, the county-level Cutback Asphalt Usage is determined by multiplying the ratio of 2011

County VMT over annual 2011 Tennessee VMT as follows:

Shelby County Cutback Asphalt Usage = (3,677.83TN- tons/ 95,492

TN ADVMT) * (8,838.06 Shelby ADVMT)

 = 340.93 Shelby - tons

 Or converting to barrels

 = (340.93 tons) (2000 lbs/ 1 tons) (1/8.34 lbs/gal) (1/42 gal/barrels)

 = 1,943.55 barrels

Finally, using the county cutback asphalt usage estimate, the VOC emissions associated with cutback asphalt usage in 

Shelby County, Tennessee is calculated as follows:

Emissions of VOC = (Shelby County Cutback Asphalt) (Emission Factor) (pound-to-ton conversion)

 = (1,943.55 barrels) (88 lbs VOC/barrels/year) (1ton/2000 lbs)

 = 85.52 tons/year

 

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 85.52 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (85.52 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.23493tons/day

References:

1. The Asphalt Institute, 2011 Asphalt Usage Survey, For the United States and Canada, 

. < http://www.asphaltinstitute.org>

3.Tennessee Department of Transportation, Highway Performance Monitoring System: HPMS DVMT Rural and Urban by 

County,. < http://www.tn.gov/tdot/topic/hpms>
Page | 102

Emulsified Asphalt Paving (SCC 2461022000)

Source Category Description Overview:

Emulsified asphalt is a type of liquefied road surfacing material made from a blend of water with an emulsifier. VOC 

emissions occur as the asphalt cures.. 

Assumptions:

Consumption data and per barrel emissions factor provide a representative method to estimate local emissions for this 

category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2012 Emulsified Asphalt Usage data for PADD II Midwest, Midwest East – 293,352 short tons 1

(note: Due to the unavailability of 2011 Asphalt data. 2012 asphalt data was used instead)

2. 2011 VMT for PADDII Midwest, Midwest East, source FHWA Highway Statistics 1

Table: 2011 PADDII State Asphalt Usage and related VMT 

3. 2011 Shelby County, Tennessee VMT total for all roadways, source TDOT 2– 8,838,061,090 miles (24,213,866 miles 

X365)

4. Emissions Factor for VOC, used in the 2011 NEI as determined by ERTAC, is presented in the table below

Table: 2011NEI Emissions Factors 

Pollutant Emissions Factor (lbs/barrel) Reference

VOC 9.2 ERTAC Emissions Factors

Calculation Methodology:

The Asphalt Institute tracks asphalt usage data for the United States and Canada. According to this database, Tennessee

emulsified asphalt usage data, which is represented in the PADD II Midwest East District, is aggregated with similar data for 

the states of Illinois, Indiana, Kentucky, Michigan, Ohio, and Tennessee. To isolate the Tennessee portion of this aggregate

number, the 2011 PADDII Midwest East Emulsified Asphalt Usage total of 293,352 tons is multiplied by the ratio of the 

annual 2011 Tennessee VMT over the annual 2011 VMT for all of the states represented in PADD II Midwest East District 

(which again is Illinois, Indiana, Kentucky, Michigan, Ohio, and Tennessee). The VMT data used for this analysis is

provided in the Federal Highway Administration’s (FHWA) annual 2011 Highway Statistics report. The Tennessee 

Emulsified Asphalt Usage is calculated as follows:

Tennessee Emulsified Asphalt Usage = (293,352.00 tons/ 656,609PADD II ADVMT)*( 95,492 (TN ADVMT)

 = 42,662.79 TN- tons

State PADD II Midwest East VMT (million miles)

Illinois 139,498

Indiana 97,066

Kentucky 79,220

Michigan 122,086

Ohio 123,247

Tennessee 95,492

Total 656,609,
Page | 103

Using the state emulsified asphalt usage estimate, the county-level Emulsified Asphalt Usage is determined by multiplying 

the ratio of 2011 County VMT over annual 2011 Tennessee VMT as follows:

Shelby County Emulsified Asphalt Usage = (42,662.79 TN- tons/ 95,492TN ADVMT) * (8,838.06 Shelby ADVMT)

 = 3948.56 Shelby - tons

 Or converting to barrels

 = (3948.56 tons) (2000 lbs/ 1 tons) (1/8.34 lbs/gal) (1/42 gal/barrels)

 = 22,545.19 barrels

Finally, using the county emulsified asphalt usage estimate, the VOC emissions associated with emulsified asphalt usage in 

Shelby County, Tennessee is calculated as follows:

Emissions of VOC = (Shelby County Emulsified Asphalt) (Emission Factor) (pound-to-ton conversion)

 = (22,545.19 barrels) (9.2 lbs VOC/barrels/year) (1ton/2000 lbs)

 = 103.71tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 103.71tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (103.71tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.2849 tons/day

References:

1. The Asphalt Institute, 2012 Asphalt Usage Survey, For the United States and Canada, 

. < http://www.asphaltinstitute.org>

2.Tennessee Department of Transportation, Highway Performance Monitoring System:2011 HPMS DVMT Rural and Urban 

by County, < http://www.tn.gov/tdot/topic/hpms>
Page | 104

Residential Portable Fuel Container (SCC 2501011013)

Source Category Description Overview:

Portable fuel container emissions result from five different events related to gas container use: permeation, diurnal, transport 

-spillage, refueling spillage and refueling vapor displacement emissions.

Assumptions:

The number of households and activity based emissions factor provide a representative method to estimate local emissions 

for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. Number of occupied residential housing units in Shelby County during 2011, 362,954

2. Results of residential household survey (note this survey was borrowed from CARB)

Percentage of Households with at Least One Gas Can 46% 54%

Number-of-Gas-Cans per Household 1.8

Percentage of Plastic-Gas Cans 76%

Percentage of Metal-Gas Cans 24%

Weighted Average Gas Can Capacity (gal.) 2.34

Percentage of Gas Cans Stored With Fuel 70%

Weighted Average Stored Fuel Volume (% of Total Capacity) 49%

Percentage of Plastic-Gas Cans Stored Open 23%

Percentage of Plastic-Gas Cans Stored Closed 53%

Percentage of Metal-Gas Cans Stored Open 11%

Percentage of Metal-Gas Cans Stored Closed 13%

Percentage of All Gas Cans Stored Open 34%

Percentage of All Gas Cans Stored Closed 66%

2. Control Efficiency, CE; CE = 46% 5

3. Rule Effectiveness, RE; RE = 80% 6 

4. Rule Penetration, RP; RP = 100% 

Calculation Methodology:

The following equations are used to calculate the emissions for residential portable fuel containers, as follows:

Residential Gas-Cans.

The following equation was used to calculate the residential gas-can population for Shelby County:

PopR = (N)(A)(CountR)

Where:

PopR = number of residential gas-cans,

N = number of occupied housing units in Shelby County, 362,954

A = percentage of households with gas-cans (46%),

CountR = average number of residential gas-cans per household (1.8).
Page | 105

A sample calculation of the number of residential gas-cans in Shelby County in 2005 is as follows:

PopR = (362,954) (0.46) (1.8)

PopR = 300,525.91as-cans

Permeation emissions are produced after fuel has been stored long enough in a can for fuel to infiltrate and saturate the 

can ma

The following equation was used to calculate the uncontrolled permeation emissions from residential gas-cans:

HCPR = PopR x S x EFP x BR x SizeR x Level x CF

Where:

HCPR = permeation emissions in pounds per day,

PopR = residential gas-can population, 300,525.91gas-cans

EFP = appropriate permeation emission factor with respect to material (plastic 1.57 g/gal-day; metal 0.06 g/gal-day),

S = percentage of gas-cans stored with fuel (70%),

BR = percentage of cans stored in closed condition with respect to material (plastic 53%; metal 13%),

SizeR = weighted average capacity of residential gas-cans (2.34 gallons),

Level = weighted average amount of stored fuel (49%),

CF= conversion factor 907,185 gram per ton.

A sample calculation estimating the uncontrolled permeation emissions from plastic residential gas-cans in Shelby County is 

as follows:

HCPR(PLASTIC) = 300,525.91x 0.70 x 1.57 x 0.53 x 2.34 x 0.49 x 1/907,185

HCPR(PLASTIC) = 0.2212 tons/year 

A sample calculation estimating the uncontrolled permeation emissions from metal residential gas-cans in Shelby County is 

as follows:

HCPR(METAL) = 300525.91 x 0.70 x 0.06 x 0.13 x 2.34 x 0.49 x 1/907,185

HCPR(METAL) = 0.002074 tons/year

Total uncontrolled permeation emissions from plastic and metal residential gas- cans in Shelby County is as follows:

HCPR = 0.2212 + 0.002074 tons/year

HCPR = 0.2233 tons VOC per year.

The Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.2231 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (0.2233 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0. 0.000858329 tons/day
Page | 106

Diurnal emissions result when stored fuel vapors escape to the ambient air through openings while the gas-can is 

subjected to the daily cycle of increasing and decreasing ambient temperatures. Diurnal emissions vary depending on a 

number of factors including the material the gas-can is made of, and whether the gas can is properly sealed (i.e. whether 

or not the vents, breathing holes or nozzle are tightly closed on the gas-can).

Uncontrolled diurnal emissions from both open and closed residential gas-cans were calculated as follows:

HCDR = PopR x S x EFD x BR x SizeR x Level x CF

Where:

HCDR = uncontrolled diurnal emissions expressed in pounds per day for residential gas-cans with respect to storage condition 

(open or closed) and material (plastic or metal),

PopR = statewide residential gas-can population, 300,525.91 gas-cans

S= percentage of gas-can population stored with fuel (70%),

EFD = appropriate diurnal emission factor with respect to storage condition and material (closed plastic 1.38 g/gal-day; 

closed metal 0.44 g/gal-day; or open 21.8 g/day applies for both metal or plastic),

BR = percentage of gas-can population with respect to storage condition and material (plastic open 23%, closed 53%; metal 

open 11%, closed 13%),

SizeR = weighted average capacity of residential gas-cans (2.34 gal.),

Level = weighted average amount of stored fuel (49%),

CF = conversion factor 907,185 gram per ton.

A sample calculation estimating uncontrolled diurnal emissions from properly closed plastic residential gas-cans in Shelby 

County is as follows:

HCDR(PLASTIC) = 300,525.91 x 0.7 x 1.38 x 0.53 x 2.34 x 0.49 x 1/907,185

HCDR(PLASTIC) = 0.1945 tons/year

A sample calculation estimating uncontrolled diurnal emissions from properly closed metal residential gas-cans in Shelby 

County is as follows:

HCDR(METAL) = 300,525.91 x 0.7 x 0.44 x 0.13 x 2.34 x 0.49 x 1/907,185

HCDR(METAL) = 0.0152tons/year

A sample calculation estimating uncontrolled diurnal emissions from open plastic residential gas-cans in Shelby 

County is as follows:

HCDRP(OPEN) = 300,525.91 x 0.7 x 21.8 x 0.23 x 2.34 x 0.49 x 1/907,185

HCDRP(OPEN) = 1.3332 tons/year.

A sample calculation estimating uncontrolled diurnal emissions from open metal residential gas-cans in Shelby County is as 

follows:

HCDRM(OPEN) = 300,525.91 x 0.7 x 21.8 x 0.11 x 2.34 x 0.49 x 1/907,185

HCDRM(OPEN) = 0.6376 tons/year.

Total uncontrolled diurnal emissions from open and closed residential gas-cans in Shelby County is as follows:

HCDR = 0.1945 + 0.0152 +1.3332 + 0.6376 

HCDR = 2.1804 tons/year.
Page | 107

The Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 2.1804 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (2.1804 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.00599tons/day

Transport-spillage emissions arise when fuel escapes (e.g. spill, etc.) from gas-cans while in transit.

The uncontrolled emissions from the transport-spillage of residential gas-cans were determine using the following equation:

HCTR = PopR x S x RefillR x EFT x BR x CF

Where:

HCTR = uncontrolled residential gas-can transport spillage emissions,

PopR = statewide residential gas-can population, 300,525.91

S = percentage of gas-cans stored with fuel (70%)

RefillR = average number of residential gas-cans-pump-refills per day per

can (0.0174 gas-can refill/day)

EFT = transport emission factor with respect to storage condition; 23.0

grams per gas-can refill (g/refill) for a closed gas-can, and 32.5

BR

g/refill for an open gas can)

= percentage of gas-cans with respect to storage condition (open

34%, and closed 66%),

CF = conversion factor 907,185 gram per ton.

A sample calculation estimating uncontrolled transport-spillage emissions from properly closed residential gascans in Shelby County is as follows:

HCTR(CLOSED) = 300,525.91 x 0.7 x 0.0174 x 23.0 x 0.66 x 1/907,185

HCTR(CLOSED) = 0.0613 tons/year

A sample calculation estimating uncontrolled transport-spillage emissions from open residential gas-cans in Shelby 

County is as follows:

HCTR(OPEN) = 300,525.91 x 0.7 x 0.0174 x 32.5 x 0.34 x 1/907,185

HCTR(OPEN) = 0.0446 tons/year.

Total uncontrolled transport-spillage emissions from plastic and metal residential gas- cans in Shelby County is as follows:

HCDR = 0.0613 + 0.0446

HCDR = 0.1058 tons/year.
Page | 108

The Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.1058 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (0.1058 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.000291 tons/day

References:

3. Occupied Residential Housing Units 2011, US Census Bureau 

4. Total 2011 Employment and business establishments by 6 digit NAICS code and by county, New Jersey 

Department of Labor. 

6. Procedures for the Preparation of Emission Inventories for Carbon Monoxide and Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air Quality 

Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016
Page | 109

Commercial Portable Fuel Container (SCC 2501011013)

Source Category Description Overview:

Portable fuel container emissions result from five different events related to gas container use: permeation, diurnal, transport 

-spillage, refueling spillage and refueling vapor displacement emissions.

Assumptions:

The number of commercial businesses using gas cans and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. Number of commercial businesses in 2011 expected to have at least one gas can by county

naics est naicstxt

11---- 9 Forestry, Fishing, Hunting, and Agriculture Support

23---- 1161 Construction

31---- 584 Manufacturing

321/// 29 Wood Product Manufacturing

322/// 17 Paper Manufacturing

323/// 93 Printing and Related Support Activities

324/// 10 Petroleum and Coal Products Manufacturing

325/// 55 Chemical Manufacturing

3251// 12 Basic Chemical Manufacturing

326/// 14 Plastics and Rubber Products Manufacturing

3261// 12 Plastics Product Manufacturing

327/// 33 Nonmetallic Mineral Product Manufacturing

3272// 2 Glass and Glass Product Manufacturing

331/// 9 Primary Metal Manufacturing

3311// 3 Iron and Steel Mills and Ferroalloy Manufacturing

332/// 100 Fabricated Metal Product Manufacturing

3321// 2 Forging and Stamping

3324// 6 Boiler, Tank, and Shipping Container Manufacturing

3325// 1 Hardware Manufacturing

3326// 3 Spring and Wire Product Manufacturing

3327// 21 Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing

33271/ 20 Machine Shops

3328// 6 Coating, Engraving, Heat Treating, and Allied Activities

3329// 17 Other Fabricated Metal Product Manufacturing

33291/ 4 Metal Valve Manufacturing

333/// 40 Machinery Manufacturing

44---- 3065 Retail Trade

441/// 329 Motor Vehicle and Parts Dealers

447/// 405 Gasoline Stations

45299/ 135 All Other General Merchandise Stores

484/// 275 Truck Transportation

4841// 190 General Freight Trucking

488/// 198 Support Activities for Transportation

4881// 26 Support Activities for Air Transportation

493/// 110 Warehousing and Storage

53131/ 205 Real Estate Property Managers

5321// 54 Automotive Equipment Rental and Leasing

532291 8 Other Consumer Goods Rental

5323// 18 General Rental Centers

5324// 33 Commercial and Industrial Machinery and Equipment Rental and Leasing

54132/ 14 Landscape Architectural Services
Page | 110

naics est naicstxt

54162/ 16 Environmental Consulting Services

54169/ 15 Other Scientific and Technical Consulting Services

56173/ 175 Landscaping Services

71391/ 14 Golf Courses and Country Clubs

71393/ 1 Marinas

7212// 5 RV (Recreational Vehicle) Parks and Recreational Camps

811/// 455 Repair and Maintenance

81293/ 49 Parking Lots and Garages

Total 8058

3. Control Efficiency, CE; CE = 46% 5

4. Rule Effectiveness, RE; RE = 80% 6 

5. Rule Penetration, RP; RP = 100% 

Calculation Methodology:

The following equations are used to calculate the emissions for residential portable fuel containers, as follows:

The following equation was used to calculate the commercial gas-can population for Shelby County:

PopC = (NC )( CountC)(A)

Where:

PopC = statewide commercial gas-can population,

NC = number of occupied businesses in each county,

CountC = average number of gas-cans per business (6.9)

A = percentage of businesses with gas-cans (80%).

A sample calculation of the number of residential gas-cans in Shelby County in 2005 is as follows:

PopC = (8058)(6.9)(0.8)

PopC = 44,480.16 gas-cans

Permeation - The following equation was used to calculate the uncontrolled permeation emissions from commercial gascans:

HCPC = PopC x S x EFP x BC x SizeC x Level x CF

Where:

HCPC = uncontrolled permeation Emissions in pounds per day,

PopC = residential gas-can population, 44,480.16 gas-cans 

EFP = appropriate permeation emission factor with respect to material

(plastic 1.57 g/gal-day; metal 0.06 g/gal-day),

S = percentage of gas-cans stored with fuel (70%),

BC = percentage of cans stored in closed condition with respect to

SizeC

material (plastic 33%; metal 18%),

= weighted average capacity of residential gas-cans (3.43 gallons),

Level = weighted average amount of stored fuel (49%),

CF = conversion factor 907,185 gram per ton.
Page | 111

A sample calculation estimating the uncontrolled permeation emissions from plastic commercial gas-cans in Shelby

County is as follows:

HCPC(PLASTIC) = 44,480.16 x 0.70 x 1.57 x 0.33 x 3.43 x 0.49 x 1/907,185

HCPC(PLASTIC) = 0.0291tons/year

A sample calculation estimating the uncontrolled permeation emissions from metal commercial gas-cans in Shelby County is 

as follows:

HCPC(METAL) = 44,480.16 x 0.70 x 0.06 x 0.18 x 3.43 x 0.49 x 1/907,185

HCPC(METAL) = 0.000607tons/year

Total uncontrolled permeation emissions from plastic and metal residential gas- cans in Shelby County is as follows:

HCPC = 0.0291+ 0.000607

HCPC = 0.0297 tons/year.

The Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.0297 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (0.0297 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.0000816 tons/day

Diurnal - Uncontrolled diurnal emissions from both open and closed commercial gas-cans were calculated as 

follows:

HCDC = PopC x S x EFD x BC x SizeC x Level x CF

Where:

HCDC = uncontrolled diurnal emissions expressed in pounds per day for commercial 

gas-cans with respect to storage condition (open or closed) and material 

(plastic or metal),

PopC = statewide commercial gas-can population,

S = percentage of gas-can population stored with fuel (70%),

EFD = appropriate diurnal emission factor with respect to storage condition and material (closed plastic 

1.38 g/gal-day; closed metal 0.44 g/gal-day; or open 21.8 g/day applies for both metal or plastic),

BC = percentage of gas-can population with respect to storage condition and material (plastic open 39%, 

closed 33%; metal open 10%, closed 18%),

SizeC = weighted average capacity of commercial gas-cans (3.43 gal.),

Level = weighted average amount of stored fuel (49%),

CF = conversion factor 907,185 gram per ton.
Page | 112

A sample calculation estimating uncontrolled diurnal emissions from properly closed plastic commercial gas-cans in Shelby

County is as follows:

HCDC(PLASTIC) = 44,480.16 x 0.7 x 1.38 x 0.33 x 3.43 x 0.49 x 1/907,185

HCDC(PLASTIC) = 0.0256 tons/year

A sample calculation estimating uncontrolled diurnal emissions from properly closed metal commercial gas-cans in Shelby

County is as follows:

HCDC(METAL) = 44,480.16 x 0.7 x 0.44 x 0.18 x 3.43 x 0.49 x1/907,185

HCDC(METAL) = 0.0045 tons/year

A sample calculation estimating uncontrolled diurnal emissions from an open plastic commercial gas-cans in Shelby 

County is as follows:

HCDC(OPEN) = 44,480.16 x 0.7 x 21.8 x 0.39x3.43x 0.49 x 1/907,185

HCDC(OPEN) = 0.4041 tons/year

A sample calculation estimating uncontrolled diurnal emissions from an open metal commercial gas-cans in Shelby County 

is as follows:

HCDC(OPEN) = 44,480.16 x 0.7 x 21.8 x 0.10 x3.43 x 0.49 x 1/907,185

HCDC(OPEN) = 0.1225 tons/year

Total uncontrolled diurnal emissions from open and closed residential gas-cans in Shelby County is as follows:

HCDC = 0.0256 + 0.0045 +0.4041 + 0.1225

HCDC = 0.5567 tons/year

The Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.5567 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (0.5567 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.00153 tons/day

Transport- spillage emissions factors for commercial gas-cans are expected to be the same as those for residential gascans: 23.0 g/refill per can for a closed container, and 32.5 g/refill per can for an open container. The refueling of gas-cans 

used for commercial lawn and garden equipment occurs much more frequently than gas-cans used to refuel other commercial 

equipment. In fact the frequency of gas-cans used for the refueling of commercial lawn and garden equipment are estimated 

to occur 0.964 times per day while gas-cans used for non-lawn and garden commercial equipment are estimated to be refilled 

only 0.12 times per day.37 For this reason the differences in refilling activity between commercial lawn and garden 

equipment, and non-lawn and garden equipment were accounted for when estimating transport-spillage emissions.
Page | 113

All businesses associated with NAICS 541320 “Landscape Architectural Services” were assumed to operate commercial 

lawn and garden equipment. All other businesses were not. 

The uncontrolled emissions from the transport-spillage of commercial gas-cans were determine using the following 

equation:

HCTC = PopC x S x RefillC x EFT x BC x CF

Where:

HCTC = uncontrolled commercial gas-can transport spillage emissions,

expressed in pounds per day

PopC = gas-can population used to refuel commercial lawn and garden

Equipment (1,043.28) or non-lawn and garden equipment, (43,436.88) gascans

S = percentage of gas-cans stored with fuel (70%)

RefillC = average number of commercial gas-cans-pump-refills per day

per can (0.964 refill/day for commercial lawn and garden

equipment or 0.12 refill/day for non-lawn and garden

commercial equipment)

EFT = transport emission factor with respect to storage condition; 23.0

grams per gas-can refill (g/refill) for a closed gas-can, and 32.5

BC

g/refill for an open gas can)

= percentage of gas-cans with respect to storage condition (open

49%, and closed 51%),

CF = conversion factor 0.002205 pounds per gram.

A sample calculation estimating uncontrolled transport -spillage emissions from properly closed gas-cans used to refuel 

commercial lawn and garden equipment in Shelby County is as follows:

HCTC(LawnClosed) = 1043.28 x 0.7 x 0.964 x 23.0 x 0.51 x 1/907,185

HCTC(LawnClosed) = 0.0091 tons/ day

A sample calculation estimating uncontrolled transport-spillage emissions from open gas-cans used to refuel commercial 

lawn and garden equipment in Shelby County is as follows:

HCTC(LawnOpen) = 1043.28 x 0.7 x 0.964 x 32.5 x 0.49 x 1/907,185

HCTC(LawnOpen) = 0.0124 tons/ day

A sample calculation estimating uncontrolled transport-spillage emissions from properly closed gas-cans used to refuel 

commercial non-lawn and garden equipment in Shelby County is as follows:

HCTC(Non-LawnClosed) = 43,436.88 x 0.7 x 0.12 x 23.0 x 0.51 x 1/907,185

HCTC(Non-LawnClosed) = 0.0472 tons/ day

A sample calculation estimating uncontrolled transport-spillage emissions from an open gas-cans used to refuel 

commercial non-lawn and garden equipment in Shelby County is as follows:

HCTC(Non-LawnOpen) = 43,436.88x 0.7 x 0.12 x 32.5 x 0.49 x 1/907,185

HCTC(Non-LawnOpen) = 0.0641 tons/ day
Page | 114

Total uncontrolled transport-spillage emissions from all commercial gas-cans in Shelby County is as follows:

HCTC = 0.0091 + 0.0124 + 0.0472 + 0.0641

HCTC = 0.1326 tons/ day.

The Summer Season Day VOC emissions estimate associated with this category is determined, as follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.1326 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (0.1326 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.000365 tons/day

The total residential PFC emission estimates are determined by combining the permeation, diurnal, and transport estimates, 

as shown below.

Total PFCRes = (Permeation + Diurnal + Transport Spillage) Residential 

 = 0.006894tons/day

The total commercial PFC emission estimates are determined by combining the permeation, diurnal, and transport estimates, 

as shown below.

Total PFCCom = (Permeation + Diurnal + Transport Spillage) Commercial 

 = 0.001975 tons/day

Finally, total PFC emissions are determined by combining the total emissions estimates from both residential and 

commercial as follows:

Total PFC= 0.006894+ 0.001975tons/day = 0.008870 tons/day
Page | 115

Gasoline Marketing - Stage I Submerged Filling (SCC 2501060051)

Source Category Description Overview:

Gasoline marketing involves the operations typically associated with transporting gasoline from refineries to final 

consumption in gasoline-powered vehicles. Evaporative emissions of VOCs occur at all points in the distribution 

process. The Shelby County Health Department, Pollution Control Section, Field Services Branch permits and 

inspects Stage I controls at gasoline stations throughout Shelby County. Stage I controls capture the displacement of 

gasoline vapors from the storage tanks during the transfer of gasoline from tank trucks to storage tanks at the service 

station.

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

97% efficiency

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. 5% of gasoline dispensed 1– 21,739,862.60 gallons

2. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/1000 gal/year) Reference

VOC 7.3 AP-42, Transportation And Marketing Of Petroleum 

Liquids1, Table 5.2-7 3

Calculation Methodology:

The VOC emissions associated with Stage I in Shelby County, Tennessee calculated using the emission calculation 

methodology provided in AP42, Chapter 5, Petroleum Industry, Section 5.2,Transportation and Marketing of 

Petroleum Products and the throughput data acquired from the Field Services database, which maintains gasoline 

throughput data for all permitted gasoline stations in Shelby County. In 2011, the Field Services Branch recorded a 

total throughput of 427,299,075gallons for all permitted gasoline stations. According to Fields Services staff, 

approximately 5% of the service stations that they inspect are splash filled. Therefore, only 5% of the gasoline 

dispensed (427,299,075x 0.05 = 21,364,953.75 gallons) is considered in this calculation. Annual VOC emissions 

estimate for this category are determined as follows:

Emissions of VOC = (TGD) (EF) (CF) ((CE)(RP)(RE))

Where,

TGD = total gasoline dispensed per county per 1,000 gallons, 21,364,953.75 gallons 

EF = emission factor, 7.3 lbs/1,000 gallons/year

CF = conversion factor, 1ton/2000 lbs

CE = control efficiency, 0.97

RP = rule penetration, 0.99

RE = rule effectiveness, 0.95

 = (21,364,953.75 gallons) (7.3 lbs/ 1000 gal/year) (1ton/2000 lbs)*(1 – (0.97*0.99*0.95))

 = 77.98– 71.14 tons/year

=6.84 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 116

Annual Emissions = 6.84 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (6.84 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.0188tons/day
Page | 117

Gasoline Marketing - Stage I Splash Filling (SCC 2501060052)

Source Category Description Overview:

Gasoline marketing involves the operations typically associated with transporting gasoline from refineries to final 

consumption in gasoline-powered vehicles. Evaporative emissions of VOCs occur at all points in the distribution 

process. The Shelby County Health Department, Pollution Control Section, Field Services Branch permits and 

inspects Stage I controls at gasoline stations throughout Shelby County. Stage I controls capture the displacement of 

gasoline vapors from the storage tanks during the transfer of gasoline from tank trucks to storage tanks at the service 

station.

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

97% efficiency

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. 5% gasoline dispensed – 21,364,953.75 gallons

2. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/1000 gal/year) Reference

VOC 11.5 AP-42, Transportation And Marketing Of Petroleum Liquids1, 

Table 5.2-7 3

Calculation Methodology:

The VOC emissions associated with Stage I in Shelby County, Tennessee are calculated using the emission 

calculation methodology provided in AP42, Chapter 5, Petroleum Industry, Section 5.2,Transportation and 

Marketing of Petroleum Products and the throughput data acquired from the Field Services database, which 

maintains gasoline throughput data for all permitted gasoline stations in Shelby County. In 2011, the Field Services 

Branch recorded a total throughput of 427,299,075gallons for all permitted gasoline stations. According to Fields 

Services staff, approximately 5% of the service stations that they inspect are submerge filled. Therefore, only 5% of 

the gasoline dispensed (427,299,075x 0.05 = 21,364,953.75 gallons) is considered in this calculation. The annual 

emissions estimate for VOC is determined as follows:

Emissions of VOC = (TGD) (EF) (CF) ((CE)(RP)(RE))

Where,

TGD = total gasoline dispensed per county per 1,000 gallons, 21,364,953.75 gallons 

EF = emission factor, 11.5 lbs/1,000 gallons/year

CF = conversion factor, 1ton/2000 lbs

CE = control efficiency, 0.97

RP = rule penetration, 0.99

RE = rule effectiveness, 0.95

 = (21,364,953.75 gallons) (11.5 lbs/ 1000 gal/year) (1ton/2000 lbs)*(1 – (0.97*0.99*0.95))

 = 122.85– 112.07 tons/year

 =10.78 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 118

Annual Emissions = 10.78tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (10.78tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.02960 tons/day
Page | 119

Gasoline Marketing - Stage I Submerged Balanced Filling (SCC 2501060053)

Source Category Description Overview:

Gasoline marketing involves the operations typically associated with transporting gasoline from refineries to final 

consumption in gasoline-powered vehicles. Evaporative emissions of VOCs occur at all points in the distribution 

process. The Shelby County Health Department, Pollution Control Section, Field Services Branch permits and 

inspects Stage I controls at gasoline stations throughout Shelby County. Stage I controls capture the displacement of 

gasoline vapors from the storage tanks during the transfer of gasoline from tank trucks to storage tanks at the service 

station.

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

97% efficiency

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. 90% of gasoline dispensed – 384,569,167.50gallons

2. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below\

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/1000 gal/year) Reference

VOC 0.3 AP-42, Transportation And Marketing Of Petroleum 

Liquids1, Table 5.2-7 3

Calculation Methodology:

The VOC emissions associated with Stage I in Shelby County, Tennessee are calculated using the emission 

calculation methodology provided in AP42, Chapter 5, Petroleum Industry, Section 5.2,Transportation and 

Marketing of Petroleum Products and the throughput data acquired from the Field Services database, which 

maintains gasoline throughput data for all permitted gasoline stations in Shelby County. In 2011, the Field Services 

Branch recorded a total throughput of 427,299,075gallons for all permitted gasoline stations. According to Fields 

Services staff, approximately 90% of the service stations that they inspect are balanced submerge filled. Therefore, 

only 90% of the gasoline dispensed (427,299,075x 0.90 = 384,569,167.50

Emissions of VOC = (TGD) (EF) (CF) ((CE)(RP)(RE))

Where,

TGD = total gasoline dispensed per county per 1,000 gallons, 384,569,167.50gallons 

EF = emission factor, 0.3 lbs/1,000 gallons/year

CF = conversion factor, 1ton/2000 lbs

CE = control efficiency, 0.97

RP = rule penetration, 0.99

RE = rule effectiveness, 0.95

 = (384,569,167.50gallons) (0.3 lbs/ 1000 gal/year) (1ton/2000 lbs)*(1 – (0.97*0.99*0.95))

 = 57.69– 52.63 tons/year

 = 5.06 tons/year 
Page | 120

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 5.06 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

 

Substituting this information into the equation gives

= (0.01880 tons/year) (1)/ (7 days/week) (52 weeks/ year)

 = 0.01390 tons/day
Page | 121

Gasoline Distribution Stage I; Bulk Plants (SCC 2501055120)

Bulk Plants emissions shown in the table below were submitted to the Shelby County Health Department, Pollution 

Control Section (SCHD-PCS) by each crematory in fulfillment of permit conditions which require periodic reporting 

of emissions information. Furthermore, it is important to note that a “Responsible Company Official” is required to 

signed a statement guaranteeing the accuracy of the emissions information submitted to SCHD-PCS.

2011 Bulk Gasoline Distribution Plant Emissions

Source # Source Name NOx VOC CO

00084 Nexeo Solutions, LLC / formerly Ashland 0.00 5.48 0.00

00166 Exxon Mobil Oil Corporation (EMOC) 1.95 39.06 0.42

00187 Delek Logistics Operating, LLC 0.00 12.67 0.00

00376 Petroleum Fuel & Terminal Company 0.00 4.94 0.00

Totals 1.95 62.15 0.42

The Summer Season Day NOx emissions associated with this category are determined, as follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks) 

Where

Annual Emissions = 1.95 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5days/ week 

Or

= (1.95 tons/year) (1)/ (5 days/week) (52 weeks)

= 0.0075 tons/day

Summer Season Day Emissions Estimates for CO and VOC are determined in a similar manner and the results are 

displayed along with NOx in the table below. 

Table: 2011 Bulk Gasoline Distribution Plant Summer Season Day Emissions Estimates 

Pollutant

Annual 

Emissions 

(ton))

Seasonal 

Adjustment 

Factor 

Weekly 

Activity Factor

Weeks 

per 

Year

Summer Season 

Day Emissions 

Estimate

(tons/day)

NOx 1.95 1 5 52 0.0075

VOC 62.15 1 5 52 0.2390

CO 0.42 1 5 52 0.00162
Page | 122

Gasoline Marketing - Underground Tank Breathing and Emptying (SCC 2501060201)

Source Category Description Overview:

Gasoline marketing involves the operations typically associated with transporting gasoline from refineries to final 

consumption in gasoline-powered vehicles. Evaporative emissions of VOCs occur at all points in the distribution 

process. The Shelby County Health Department, Pollution Control Section, Field Services Branch permits and 

inspects Stage I controls at gasoline stations. Stage I controls capture the displacement of gasoline vapors from the 

storage tanks during the transfer of gasoline from tank trucks to storage tanks at the service station.

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. total gasoline dispensed 1– 427,299,075gallons

2. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/1000 gal/yr) Reference

VOC 1.00 AP-42, Transportation And Marketing Of Petroleum 

Liquids1, Table 5.2-7 3

Calculation Methodology:

The VOC emissions associated with Underground Tank Breathing and Emptying in Shelby County, Tennessee are 

calculated using the emission calculation methodology provided in AP42, Chapter 5, Petroleum Industry, Section 

5.2,Transportation and Marketing of Petroleum Products and the throughput data acquired from the Field Services 

database, which maintains gasoline throughput data for all permitted gasoline stations in Shelby County. In 2011, 

the Field Services Branch recorded a total throughput of 427,299,075gallons for all permitted gasoline stations. 

VOC emissions estimate for this category are determined as follows:

Emissions of VOC = (Shelby County gasoline gallons delivered) (Emission Factor) (pound-to-ton conversion)

= (427,299,075gallons) (1.0 lbs/1,000 gallons/year) (1ton/2000 lbs)

= 213.6495 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 213.6495 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (213.6495 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.5869 tons/day
Page | 123

Gasoline Marketing - Stage 2 Gasoline Refueling Uncontrolled Displacement Losses (SCC 2501060103)

Source Category Description Overview:

Gasoline marketing involves the operations typically associated with transporting gasoline from refineries to final 

consumption in gasoline-powered vehicles. Evaporative emissions of VOCs occur at all points in the distribution 

process. Stage II controls are not required at gasoline stations throughout Shelby County. 

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. 22.3% of gasoline dispensed – 95,287,693.73gallons

2. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/1000 gal/year) Reference

VOC 11 AP-42, Transportation And Marketing Of Petroleum 

Liquids1, Table 5.2-7 3

Calculation Methodology:

The VOC emissions associated with Gasoline Refueling Displacement Spillage I in Shelby County, Tennessee are 

calculated using the emission calculation methodology provided in AP42, Chapter 5, Petroleum Industry, Section 

5.2,Transportation and Marketing of Petroleum Products and the throughput data acquired from the Field Services 

database, which maintains gasoline throughput data for all permitted gasoline stations in Shelby County. In 2011, 

the Field Services Branch recorded a total throughput of 427,299,075gallons for all permitted gasoline stations. 

Stage II controls are not required in Shelby County. According to Table A-1 - Projected Penetration of ORVR in the 

National Gasoline Fueled Vehicle Fleet by Year, Guidance on Removing Stage II Gasoline Vapor Control Programs 

from State Implementation Plans and Assessing Comparable Measures, 28.6 % of the vehicle population is equipped 

with Onboard Refueling Vapor Recovery Systems. Thus, per TableA-1, for this calculation only 22.3 % of the fuel 

dispensed (427,299,075x 0.223 = 95,287,693.73 gallons) will be considered to be uncontrolled. VOC emissions 

estimate for this category are determined as follows:

Emissions of VOC = (TGD) (EF) (CF)

Where,

TGD = total gasoline dispensed per county per 1,000 gallons, 95,287,693.73 gallons 

EF = emission factor, 11 lbs/1,000 gallons/year

CF = conversion factor, 1ton/2000 lbs

 = (95,287,693.73 gallons) (11 lbs/ 1000 gal/year) (1ton/2000 lbs)

 = 524.08 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 124

Annual Emissions = 524.08 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (524.08 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 1.440 tons/day
Page | 125

Gasoline Marketing - Stage 2 Gasoline Refueling Controlled Displacement Losses (SCC 2501060102)

Source Category Description Overview:

Gasoline marketing involves the operations typically associated with transporting gasoline from refineries to final 

consumption in gasoline-powered vehicles. Evaporative emissions of VOCs occur at all points in the distribution 

process. Stage II controls are not required at gasoline stations throughout Shelby County. 

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. 77.7% of gasoline dispensed – 332,011,381.3 gallons

2. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/1000 gal/year) Reference

VOC 1.1 AP-42, Transportation And Marketing Of Petroleum 

Liquids1, Table 5.2-7 3

Calculation Methodology:

The VOC emissions associated with Gasoline Refueling Displacement Spillage I in Shelby County, Tennessee are 

calculated using the emission calculation methodology provided in AP42, Chapter 5, Petroleum Industry, Section 

5.2,Transportation and Marketing of Petroleum Products and the throughput data acquired from the Field Services 

database, which maintains gasoline throughput data for all permitted gasoline stations in Shelby County. In 2011, 

the Field Services Branch recorded a total throughput of 427,299,075gallons for all permitted gasoline stations. 

Stage II controls are not required in Shelby County. According to Table A-1 - Projected Penetration of ORVR in the 

National Gasoline Fueled Vehicle Fleet by Year, Guidance on Removing Stage II Gasoline Vapor Control Programs 

from State Implementation Plans and Assessing Comparable Measures, 71.4% of the vehicle population is equipped 

with Onboard Refueling Vapor Recovery Systems. Thus, per TableA-1, for this calculation only 77.7% of the 

dispensed fuel (427,299,075x 0.777 = 332,011,381.3 gallons) will be considered to be controlled. VOC emissions 

estimate for this category are determined as follows:

Emissions of VOC = (TGD) (EF) (CF) * (1 – (0.95))

Where,

TGD = total gasoline dispensed per county per 1,000 gallons, 337,837,464.8 gallons 

EF = emission factor, 1.1 lbs/1,000 gallons/year

CF = conversion factor, 1ton/2000 lbs

 = (332,011,381.3 gallons) (1.1 lbs/ 1000 gal/year) (1ton/2000 lbs) (1 – (0.95))

 = 182.61 – 173.48 tons/year

 = 9.13 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 126

Annual Emissions = 9.13 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (9.11 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.02508tons/day
Page | 127

Gasoline Marketing - Stage 2 Gasoline Refueling Displacement Spillage (SCC 2501060103)

Source Category Description Overview:

Gasoline marketing involves the operations typically associated with transporting gasoline from refineries to final 

consumption in gasoline-powered vehicles. Evaporative emissions of VOCs occur at all points in the distribution 

process. Stage II controls are not required at gasoline stations throughout Shelby County. 

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. total gasoline dispensed – 427,299,075gallons

2. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/1000 gal/year) Reference

VOC 0.7 AP-42, Transportation And Marketing Of Petroleum 

Liquids1, Table 5.2-7 3

Calculation Methodology:

The VOC emissions associated with Gasoline Refueling Displacement Spillage I in Shelby County, Tennessee are 

calculated using the emission calculation methodology provided in AP42, Chapter 5, Petroleum Industry, Section 

5.2,Transportation and Marketing of Petroleum Products and the throughput data acquired from the Field Services 

database, which maintains gasoline throughput data for all permitted gasoline stations in Shelby County. In 2011, 

the Field Services Branch recorded a total throughput of 427,299,075gallons for all permitted gasoline stations. 

Stage II controls are not required in Shelby County. VOC emissions estimate for this category are determined as 

follows:

Emissions of VOC = (TGD) (EF) (CF)

Where,

TGD = total gasoline dispensed per county per 1,000 gallons, 427,299,075gallons 

EF = emission factor, 0.7lbs/1,000 gallons/year

CF = conversion factor, 1ton/2000 lbs

 = (427,299,075gallons) (0.7 lbs/ 1000 gal/year) (1ton/2000 lbs)

 = 149.5547 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 128

Annual Emissions = 149.5547 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (149.5547 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.4109 tons/day
Page | 129

Gasoline Marketing - Stage I; Tank Trucks in Transit (SCC 2505030120)

Source Category Description Overview:

Gasoline marketing involves the operations typically associated with transporting gasoline from refineries to final 

consumption in gasoline-powered vehicles. Evaporative emissions of VOCs occur at all points in the distribution 

process. Tank trucks in transit are a source of displaced of gasoline vapors.

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. total gasoline dispensed 1– 427,299,075gallons

2. Weekly activity, WAF = 7 days/week

3. Seasonal Adjustment factor, SAF = 1

4. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/1000 gal/yr) Reference

VOC 0.06 AP-42, Transportation And Marketing Of Petroleum 

Liquids1, Table 5.2-7 3

Calculation Methodology:

The VOC emissions associated with Tank Trucks in Transit in Shelby County, Tennessee calculated using the 

emission calculation methodology provided in AP42, Chapter 5, Petroleum Industry, Section 5.2,Transportation and 

Marketing of Petroleum Products and the throughput data acquired from the Field Services database, which 

maintains gasoline throughput data for all permitted gasoline stations in Shelby County. In 2011, the Field Services 

Branch recorded a total throughput of 434,797,252 gallons for all permitted gasoline stations. VOC emissions 

estimate for this category are determined as follows:

Emissions of VOC = (Shelby County gasoline gallons delivered) (Emission Factor) (pound-to-ton conversion)

= (427,299,075gallons) (0.06 lbs/1,000 gallons/year) (1ton/2000 lbs)

= 12.8189 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 12.8189 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (12.8189 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.0352 tons/day
Page | 130

Gasoline Marketing - Aviation Gasoline Distribution: Stage I (SCC 2501080050)

Source Category Description Overview:

Like vehicle refueling, aircraft refueling results in VOC emissions. Stage I is one processes that causes the 

displacement of vapors during the transfer of aviation gasoline from tank trucks to storage tanks and vice versa. 

Evaporative emissions of VOCs occur at all points in the distribution process. 

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. total aviation gasoline dispensed is presented in the table below

Table: Aviation Gas Totals 

Airport Aviation Fuel (gallons)

Memphis International 195,873

Charles W. Baker 179,129

General Dewitt Spain 179,867

Total 254,869

1

Source: MEMPHIS INTERNATIONAL AIRPORT ANNUAL ACTIVITY REPORT FOR YEAR ENDED DECEMBER 31, 2011, < http://www.mscaa.com>

2. Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: EIIP Emissions Factors 

Pollutant Emissions Factor (lbs/ 1000 gal/yr) Reference

VOC 19.3 EIIP, Chapter 11-Gasoline Marketing, Section 3

Calculation Methodology:

The VOC emissions associated with aviation gasoline in Shelby County, Tennessee are calculated using the 

emissions equation from the EIIP Tech. Report, Chapter 11-Gasoline Marketing, Section 3 and the throughput data 

acquired from the Memphis International Airport Annual Activity Report For Year Ended December 31, 2011, 

which indicated that a total throughput of 275,815gallons at airport controlled by the Memphis and Shelby County 

Airport Authority. VOC emissions estimate for this category are determined as follows:

Emissions of VOC = (Shelby County Aviation gasoline gallons) (Emission Factor) (pound-to-ton conversion)

= (254,869gallons) (19.3 lbs/1,000 gallons/year) (1ton/2000 lbs)

= 2.4595 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where
Page | 131

Annual Emissions = 2.4595 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (2.4595 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.00676 tons/day
Page | 132

Gasoline Marketing - Aviation Gasoline Distribution: Stage II (SCC 2501080050)

Source Category Description Overview:

Like vehicle refueling, aircraft refueling results in VOC emissions. Stage II is one processes that causes the 

displacement of vapors during the transfer of aviation gasoline storage tanks to aircraft. 

Assumptions:

Total countywide gasoline throughput and activity based emissions factor provide a representative method to 

estimate local emissions for this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. total aviation gasoline dispensed is presented in the table below

Table: Aviation Gas Totals 

Airport Aviation Fuel (gallons)

Memphis International 1

95,873

Charles W. Baker 1

79,129

General Dewitt Spain 1

79,867

Total 254,869

1

Source: MEMPHIS INTERNATIONAL AIRPORT ANNUAL ACTIVITY REPORT FOR YEAR ENDED DECEMBER 31, 2011, < http://www.mscaa.com>

2. Weekly activity, WAF = 7 days/week

3. Seasonal Adjustment factor, SAF = 1

4. Emissions Factor for VOC, which is provided in EIIP Tech. Report, Table 11.3-1., is presented in the table bel

Emissions Factor for VOC, which is provided in AP-42, Table 5.2-7., is presented in the table below

Table: EIIP Emissions Factors 

Pollutant Emissions Factor (lbs/ 1000 gal/yr) Reference

VOC 13.6 EIIP, Chapter 11-Gasoline Marketing, Section 3

Calculation Methodology:

The VOC emissions associated with aviation gasoline in Shelby County, Tennessee are calculated using the 

emissions equation from the EIIP Tech. Report, Chapter 11-Gasoline Marketing, Section 3 and the throughput data 

acquired from the Memphis International Airport Annual Activity Report For Year Ended December 31, 2011, 

which indicated that a total throughput of 275,815gallons at airport controlled by the Memphis and Shelby County 

Airport Authority. VOC emissions estimate for this category are determined as follows:

Emissions of VOC = (Shelby County Aviation gasoline gallons) (Emission Factor) (pound-to-ton conversion)

= (254,869gallons) (13.6 lbs/1,000 gallons/year) (1ton/2000 lbs)

= 1.7331 tons/year

Furthermore, the Summer Season Day VOC emissions estimate associated with this category is determined, as 

follows:

Emissions of VOC = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 1.7331 tons
Page | 133

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (1.7331 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.00476 tons/day
Page | 134

Land Clearing (2610000500)

Source Category Description Overview:

Land Clearing emissions result from the purposeful burning of debris, such as trees, shrubs, and brush, from the 

clearing of land for the construction of new buildings and/or highways. NOx, CO, and VOC emission estimates 

from open burning of land clearing debris are a function of the amount of materials and fuel subject to burning. 

These emissions were calculated from actual 2011 burn permit data obtained from the Shelby County Health 

Department, Pollution Control Section, Field Services Branch. 

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. burn permit data

2. Emissions Factors for NOx, CO, and VOC, which are obtained from EIIP, Volume II, Chapter 16: Open 

Burning, Revised Final, January 2001, page 16.4-11 are presented in the table below

 Table: EIIP Open Burning Emissions Factors 

Pollutant Emissions Factor (lbs/ton) Reference

NOx 0.5 Table 16.4-2 land clearing debris

CO 22 Table 16.4-2 land clearing debris

VOC 12 Table 16.4-2 land clearing debris

Calculation Methodology:

During calendar year 2011, the Field Services Branch issued 14 burn permits. Burn permits are issued for 30 days. 

While this time period is sufficient for some burns, others require time extension to complete the job. Also, note 

that, Sundays, some holidays, and rainy days, where rain totals are greater than or equal to 1inch, are not conducive 

to burning and are deducted from the thirty day period. For example, the number of burn days in the month of 

January are determined, as follows:

#of Burn Days in January = (# of Permits) (# of Burn days/ permit - # of Sundays. in the month - # of Holidays - # of rainy days)

= (3) (30 – 5 –2 –0)

= 69

The table below shows the 2011 Burn Permit data.

2011 Burn Permits

Month # of 

permits # burns days/permit # of Sat&Sun/mo # holidays 

#of days in the 

month that 

received rain>= 

1.0 inches 

(source:NCDC)

#burn days

January 2 30 10 2 0.00 36

February 3 30 8 0 2.00 60

March 1 30 8 1 2.00 19

April 3 30 9 0 4.00 51

May 2 30 9 0 2.00 38

June 2 30 8 0 2.00 40

July 0 30 10 1 0.00 0

August 3 30 8 0 0.00 66

September 4 30 8 1 2.00 76

October 3 30 10 1 0.00 57

November 2 30 8 1 2.00 38

December 1 30 10 1 2.00 17

total 26 498
Page | 135

According to Section staff, burns normally occur for 10 hours a day and are charged at 10 tons per hour. Thus, 

multiplying hours per day by tons per hour by burn days from the table above yields tonnage of wood burned, as 

follows:

(498 burns/year) (10 hours/day) (10 tons/hour) = 49,800 tons burned/year

Finally, the annual emission estimate for nitrogen dioxide, NOx, is determined as follows:

Emissions of NOx = (Load Factor) (Emission Factor) (pound-to-ton conversion)

 = (49,800 tons burned/year) (0.5 lbs /ton) (1ton/2000 lbs)

 = 12.45 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 12.45 tons

SAF = Seasonal Adjustment Factor, 2.9

WAF = Weekly Activity Factor, 6 days/ week 

Substituting this information into the equation gives

= (12.45 tons/year tons/year) (2.9)/ (6 days/week) (52 weeks/ year)

= 0.1157 tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Land Clearing Emissions Estimates 

Pollutant Load Factor

(tons burned)

Emissions Factor 

(lbs/tons)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 49,800 0.5 12.45 0.1157

CO 49,800 22 547.8 5.0917

VOC 49,800 12 298.8 2.777

Control Factor:

No controls were assumed for this category
Page | 136

On Site Incineration (SCC 2601020000)

On-site incineration emissions occur at industrial and commercial facilities alike. The emissions estimates for this

source category ate intended to capture all of the emissions sources of this type.

Assumptions:

County population and per capita emissions factor provide a representative method to estimate local emissions for 

this category.

Control Factor:

No controls were assumed for this category

Activity Data/ Required Input Parameters:

The following activity data /input parameters are needed to calculate emissions for this source category.

1. 2011 Shelby County, Tennessee. population (Census Bureau)1– 935,088

2. Emissions Factors for NOx, CO, and VOC, which are obtained from EIIP, Volume II, Chapter 16: Open 

Burning, Revised Final, January 2001, page 16.4-3 are presented in the table below

 Table: EIIP Open Burning Emissions Factors 

Pollutant Emissions Factor (lbs/ton) Reference

NOx 6 Table 16.4-1

CO 85 Table 16.4-1

VOC 8.556 Table 16.4-1

3. Waste Generation Factor, 0.023 tons/ person, which was obtained from Procedures For The Preparation Of 

Emission Inventories For Carbon Monoxide And Precursors Of Ozone, Volume I: General Guidance For Stationary 

Sources, United States Environmental Protection Agency, Office of Air Quality Planning and Standards, Research 

Triangle Park, NC 27711, EPA-450/4-91-016, May 1991, Table 4.6-1

Calculation Methodology:

On-site incineration emissions are calculated based on county population. The NOx emissions associated with this 

category are determined using the per capita emission factor of 6 lbs NOx/ton waste, a fuel loading factor of 0.023 

tons refuse per person per year, and the 2011 Shelby County population, as follows:

Emissions of NOx = (2011 county population) (Fuel Loading Factor) (Emission Factor) (pound-to-ton conversion)

 = (935,088 persons) (0.023 tons/ person/year) (6 lbs /ton waste) (1ton/2000 lbs)

 = 64.521 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 64.521 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (64.521 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.1773 tons/day
Page | 137

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee On-Site Incineration Emissions Estimates 

Pollutant

Shelby 

Population 

(persons))

Fuel Loading 

Factor 

(tons/person/year)

Emissions 

Factor (lbs/ton)

Emissions Estimate

(tons/year)

Emissions Estimate

(tons/day)

NOx 935,088 0.023 6 64.521 0.1773

CO 935,088 0.023 85 914.05 2.5111

VOC 935,088 0.023 8.556 92.007 0.2528

References:

1. American Fact Finder, US Census Bureau

. Internet Address: http://www.census.gov/econ/cbp/download/12_datay
Page | 138

Municipal Solid Waste (MSW) Landfills (SCC 2620030000)

Source Category Description Overview:

MSW Landfills emissions shown in the table below were submitted to the Shelby County Health Department, 

Pollution Control Section (SCHD-PCS) by each landfill facility in fulfillment of permit conditions which require 

periodic reporting of emissions information. Furthermore, it is important to note that a “Responsible Company 

Official” is required to signed a statement guaranteeing the accuracy of the emissions information submitted to 

SCHD-PCS.

2011 Shelby County, TN Landfill Emissions

SID# Company Name NOX CO VOC

00395 BFI Waste Systems of North America, Inc. 17.45 94.96 21.83

00556 Shelby County Landfill 0.22 0.72 1.59

00698 BFI Waste Systems of North America, Inc 15.08 82.07 9.15

01042 North Memphis Landfill, Inc. 1.34 0.00 0.00

Totals 34.09 177.75 32.57

. 

The Summer Season Day NOx emissions associated with this category are determined, as follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks) 

Where

Annual Emissions = 34.09 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (34.09 tons/year) (1)/ (7 days/week) (52 weeks/year)

= 0.0937 tons/day

Summer Season Day Emissions Estimates for CO and VOC are determined in a similar manner and the results are 

displayed along with NOx in the table below. 

Table: 2011 MSW Landfills Summer Season Day Emissions Estimates 

Pollutant

Annual 

Emissions 

(ton))

Seasonal 

Adjustment 

Factor 

Weekly 

Activity Factor

Weeks 

per 

Year

Summer Season 

Day Emissions 

Estimate

(tons/day)

NOx 34.09 1 7 52 0.0937

CO 177.75 1 7 52 0.4883

VOC 32.57 1 7 52 0.0895
Page | 139

Publicly Owned Treatment Works (POTW) (SCC 2630020000)

Source Category Description Overview

Publicly Owned Treatment Works (POTW) emissions shown in the table below were submitted to the Shelby 

County Health Department, Pollution Control Section (SCHD-PCS) by the POTW facilities in fulfillment of permit 

conditions which require periodic reporting of emissions information. Furthermore, it is important to note that a 

“Responsible Company Official” is required to signed a statement guaranteeing the accuracy of the emissions 

information submitted to SCHD-PCS.

2011 Shelby County, TN POTW Emissions

Source 

ID# Facility Name NOx CO VOC

00701 T. E. Maxson Wastewater Treatment Plant 12.28 66.78 25.26

00702 Maynard C. Stiles Wastewater Treatment Plant 4.00 21.76 8.23

Totals 16.28 88.54 33.49

The Summer Season Day NOx emissions associated with this category are determined, as follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks) 

Where

Annual Emissions = 16.28 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7days/ week 

Substituting this information into the equation gives

= (16.28 tons/year) (1)/ (7 days/week) (52 weeks)

= 0.0447 tons/day

Summer Season Day Emissions Estimates for CO and VOC are determined in a similar manner and the results are 

displayed along with NOx in the table below. 

Table: 2011 POTW Summer Season Day Emissions Estimates 

Pollutant

Annual 

Emissions 

(ton))

Seasonal 

Adjustment 

Factor 

Weekly 

Activity Factor

Weeks 

per 

Year

Summer Season 

Day Emissions 

Estimate

(tons/day)

NOx 16.28 1 7 52 0.0447

CO 88.54 1 7 52 0.2432

VOC 33.49 1 7 52 0.0920
Page | 140

Structure Fires (SCC: 2810030000)

Source Category Description Overview:

Structure fires include fires that involve any type of building or edifice. Emissions from structure fires are 

determined by the incidence of fires and the amount and the type of material burned. Calculations for estimating 

emissions for structure fires use an equation based on emission factors, fuel loading, and activity data. 

Assumptions:

County population and activity based emissions factor provide a representative method to estimate local emissions 

for this category.

Control Factor:

No controls were assumed for this category

Required Input Parameters:

The following input data is required to calculate emissions for this source category.

1. Fuel loading factor: FL = 1.15 tons burned/fire 1

2. Number of fires per person = 1.54 fires/ 1000 persons 2

3. Emissions Factors for NOx, CO, and VOC, which are obtained from EIIP, Volume II 3, are presented in the table 

below

Table: EIIP Emissions Factors 

Pollutant Emissions Factor (lbs/ton) Reference

NOx 1.4 Table 18.4-1

CO 60 Table 18.4-1

VOC 11 Table 18.4-1

Calculation Methodology:

In 2011, the National Fire Protection Association (NFPA) reported that 480,500 fires had occurred nationally. At 

that time the U.S. population total was 312,780,968 people. Using this information the average number of structure 

fires was determined, as follows:

 Number of Fires Per Person (NPP) Factor = Numbers fires reported by NFPA/U.S. Populations

= 480,500 fires/312,780,968 persons

= 1.54 fires/ 1000 persons

The NOx emissions associated with this category are determined using the 2011 Shelby County population of 

939465, the NPP factor of 1.54fires/ 1000 persons, the fuel loading factor of 1.15 tons burned per structure fire, and 

the NOx emissions factor of 1.4 lbs NOx/ton, as follows:

Emissions of NOx = (2011 County Pop) (NPP Factor) (Fuel Loading Factor) (Emission Factor) (pound-to-ton conversion)

= (935,088 persons) (1.54 fires/1000 persons) (1.15 tons burned/structure fire) (1.4 lbs /ton waste) (1ton/2000 lbs)

= 1.159 tons/year

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 1.159 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week 

Substituting this information into the equation gives

= (1.159 tons/year tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.00318 tons/day
Page | 141

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Structure Fire Emissions Estimates 

Pollutant

Shelby County 

Population 

(persons)

Fires per 

1000

(persons)

Fuel Load 

Factor

(tons burned)

Emissions 

Factor 

(lbs/tons)

Emissions 

Estimate

(tons/year)

Emissions 

Estimate

(tons/day)

NOx 935,088 1.54 1.15 1.4 1.159 0.00318

CO 935,088 1.54 1.15 60 49.68 0.1365

VOC 935,088 1.54 1.15 11 9.108 0.02502

Control Measures:

The emissions from this source category are regulated by the following rule: None

References:

1. Procedures for the Preparation of Emission Inventories for Carbon Monoxide and Precursors of Ozone, Vol. I: 

General Guidance for Stationary Sources, May 1991, United States Environmental Protection Agency, Office of Air 

Quality Planning and Standards, Research Triangle Park, NC, EPA-450/4-91-016 

2. National Fire Protection Association, http://www.nfpa.org/research/reports-and-statistics/fires-in-the-us/overallfire-problem/structure-fires

3. EIIP, Volume II, Chapter 18: Structure Fires, Revised Final, January 2001, page 18.4-5
Page | 142

Vehicle Fires (SCC 2810050000)

Source Category Description Overview

Vehicle fire emissions results from the amount of material burned (the fuel loading) in a vehicle fire. Based on an 

average vehicle weight of 3700 lbs. and a component weight of 500 lbs., the vehicle fire fuel loading has been 

estimated to be approximately 0.25 tons.

Assumptions:

USFA fire data and activity based emissions factor provide a representative method to estimate local emissions for 

this category.

Control Factor:

No controls were assumed for this category

Required Input Parameters:

The following input data is required to calculate emissions for this source category.

1. Fuel loading factor: FL = 0.25 tons burned/fire 1

2. Emissions Factors for NOx, CO, and VOC, which are obtained from EIIP, Volume II 1, are presented in the table 

below

Table: AP-42 Emissions Factors 

Pollutant Emissions Factor (lbs/ton) Reference

NOx 4 Section 2.5 Open Burning, 1996

CO 125 Section 2.5 Open Burning, 1996

VOC 32 Section 2.5 Open Burning, 1996

Calculation Methodology:

In 2011, the United States Fire Administration (USFA) indicated that there were 219,000 vehicle fires nationwide.

According to the EIIP abstract on Vehicle Fires1, vehicle miles traveled may be used to spatially apportion national 

fire activity to the state level. The number of vehicle fires that occurred in Shelby County, Tennessee during this 

period is estimated by apportioning the USFA vehicle fire statistic to the county level. To obtain this, the ratio of 

Tennessee vehicle miles traveled (VMT) to U.S. VMT is multiplied by the number of nationwide vehicle fires, as 

follows:

 Number of vehicle fires in Tennessee = (USFA vehicle fire stat) *(TN VMT/ US VMT)

 = (219,000 vehicle fires) (70,751,000,000 TN-VMT / 2,968,990,000,000

US -VMT)

 = 5218.77 vehicle fires in Tennessee

Then the number of statewide vehicle fires was apportioned to the county level based on annual Shelby County

VMT, as follows:

Number of vehicle fires in Shelby County, TN = (USFA vehicle fire stat) *(Shelby, County VMT / TN VMT)

 = (5218.77 vehicle fires) (8,838,061,090 Shelby-VMT / 70,751,000,000 TN -VMT)

 = 651.92 vehicle fires in Shelby County, Tennessee
Page | 143

Using this methodology the emission estimate generated from this category is given by the following equation,

EM = (# of Shelby Vehicle Fires) (Fuel Loading) (EF) (1ton / 2000 lbs)

where:

EM = total daily emissions in tons/day

FL = fuel loading factor, 0.25 tons burned/vehicle fire

EF = emission factors, VOC = 32 lbs/ton burned year and NOx = 4 lbs/ton

For example, the NOx emissions associated with this category are determined, as follows:

EM = (651.92 vehicle fires) * (0.25 lbs/ vehicle) * (4 lbs/ton) * (1ton / 2000 lbs)

=0.326 tons/year NOx 

Furthermore, the Summer Season Day NOx emissions estimate associated with this category is determined, as 

follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

where

Annual Emissions = 0.109 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 7 days/ week n

Substituting this information into the equation gives

= (0.326 tons/year) (1)/ (7 days/week) (52 weeks/ year)

= 0.000895tons/day

Emissions estimates for CO and VOC are determined in a similar manner and the results are displayed along with 

NOx in the table below. 

Table: 2011 Shelby County, Tennessee Structure Fire Emissions Estimates 

Pollutant

Number of 

Shelby 

Vehicle Fires

Fuel Load 

Factor

(tons 

burned)

Emissions 

Factor 

(lbs/tons)

Emissions 

Estimate

(tons/year)

Emissions 

Estimate

(tons/day)

NOx 651.92 0.25 4 0.326 0.000895

CO 651.92 0.25 125 10.186 0.027984

VOC 651.92 0.25 32 2.608 0.007164

Control Measures:

The emissions from this source category are regulated by the following rule: None

References:

1. EIIP, Volume III, Are Source Category Abstract – Vehicle Fires, May 15, 2000
Page | 144

Human Cremation (SCC 2810060100)

Human Cremation emissions shown in the table below were submitted to the Shelby County Health Department, 

Pollution Control Section (SCHD-PCS) by each crematory in fulfillment of permit conditions which require periodic 

reporting of emissions information. Furthermore, it is important to note that a “Responsible Company Official” is 

required to signed a statement guaranteeing the accuracy of the emissions information submitted to SCHD-PCS.

2011 Human Cremation Emissions 

Source # Source Name NOx VOC CO

00469 Forest Hill Funeral and Memorial Park-East, LLC 0.45 0.01 0.00

00764 Memorial Park Funeral Home 0.06 0.00 0.05

00787 Memphis Service Center (dba) 0.15 0.15 0.05

00813 Tennessee Cremations, INC 0.36 0.00 0.06

01005 High Point Funeral Chapel (dba) 3.00 0.00 0.00

Totals 4.02 0.16 0.16

The Summer Season Day NOx emissions associated with this category are determined, as follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks)

Annual Emissions = 4.02 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5days/ week

Substituting this information into the equation gives

= (4.02 tons/year) (1)/ (5 days/week) (52 weeks)

= 0.0155 tons/day

Summer Season Day Emissions Estimates for CO and VOC are determined in a similar manner and the results are 

displayed along with NOx in the table below. 

Table: 2011 Human Cremation Summer Season Day Emissions Estimates 

Pollutant

Annual 

Emissions

(ton))

Seasonal 

Adjustment 

Factor 

Weekly 

Activity Factor

Weeks 

per 

Year

Summer Season 

Day Emissions 

Estimate

(tons/day)

NOx 4.02 1 5 52 0.0155

CO 0.16 1 5 52 0.0006

VOC 0.16 1 5 52 0.0006
Page | 145

Cremation - Animal (SCC 2810060100)

Animal Cremation emissions shown in the table below were submitted to the Shelby County Health Department, 

Pollution Control Section (SCHD-PCS) by each crematory in fulfillment of permit conditions which require periodic 

reporting of emissions information. Furthermore, it is important to note that a “Responsible Company Official” is 

required to signed a statement guaranteeing the accuracy of the emissions information submitted to SCHD-PCS.

2011 Animal Cremation Emissions

Source # Source Name NOx VOC CO

00820 Dixie Memorial Pet Gardens 0.15 0.00 0.02

00957 Animal Crematory Incinerator 0.54 0.54 0.00

Totals 0.69 0.54 0.02

The Summer Season Day NOx emissions associated with this category are determined, as follows:

Emissions of NOx = (Annual Emissions) (SAF) / (WAF) (52 Weeks) 

Where

Annual Emissions = 0.69 tons

SAF = Seasonal Adjustment Factor, 1

WAF = Weekly Activity Factor, 5days/ week 

Substituting this information into the equation gives

= (0.69 tons/year) (1)/ (5 days/week) (52 weeks)

= 0.0027 tons/day

Summer Season Day Emissions Estimates for CO and VOC are determined in a similar manner and the results are 

displayed along with NOx in the table below. 

Table: 2011 Animal Cremation Summer Season Day Emissions Estimates 

Pollutant

Annual 

Emissions 

(ton))

Seasonal 

Adjustment 

Factor 

Weekly 

Activity Factor

Weeks 

per 

Year

Summer Season 

Day Emissions 

Estimate

(tons/day)

NOx 0.69 1 5 52 0.0027

CO 0.54 1 5 52 0.0021

VOC 0.02 1 5 52 0.00008