Directions -

Facility Profile

Type of Plant- Select "Drum" or "Batch" from the drop-down menu.

Plant Capacity- 123.29 (tons/hr) 89998.05

Burner Size- 150 (MMBtu/hr)

Fuels Used in Dryer

Natural Gas- Y (Y or N)

Liquid Fuel (distillate, diesel, etc.) Y (Y or N)

Max Lime Usage- 1% (weight %) Default = 1%

Max Hourly Lime Loading- 25 (ton) Default = 25

Bin Vent Efficiency- 98% (%) Default = 98%

Aggregate

Max. RAP Used- 50% (%) Default = 50% RAP = Reclaimed Asphalt Pavement

# of Virgin Agg. Conveyors- 3 (#)

# of Virgin Agg. Screens- 1 (#)

# of RAP Conveyors- 2 (#)

# of RAP Screens- 1 (#)

Aggregate Moisture- 1.8 (%) Default = 1.8%

Auxiliary Heaters Capacity - 10 (MMBtu/hr) Total

Fuels Used

Natural Gas- Y (Y or N)

Propane- Y (Y or N) Sulfur %

Liquid Fuel (distillate, diesel, etc.) Y (Y or N) 0.0015 Default = 0.0015

Generator/Engine Size- 134 (hp)

Fuels Used Sulfur %

Diesel- Y (Y or N) 0.0015 Default = 0.0015

Other Parameters

Enter the facility's information below. 

Write the letter "Y" or "N" next to each fuel type to indicate that the facility does or does not burn that type of fuel. 

The potential emissions of criteria pollutants for the facility will be displayed under the "Output - Criteria" tab.

Potential To Emit Calculator for Hot Mix Asphalt Plants

3/23/2015

This spreadsheet helps estimate a facility's potential to emit. It is provided for the convenience of the permitted community. EPA does not guarantee the accuracy or appropriateness of this 

information. Emission factor sources are subject to revision or correction. It is the permittee's responsibility to verify the accuracy of the information. EPA is not liable for errors or omissions.

This PTE calculator is only applicable to the asphalt plants subject to NSPS, Subpart I (i.e. all PM emission units are controlled) and only applicable to the asphalt 

plants with the dryers controlled by dry filters. The emission factors for the dryers controlled by scrubbers are not included in this spreadsheet since the use of 

scrubbers to control asphalt plants are rare.

If you are NOT subject to NSPS, Subpart I, the PM/PM10/PM2.5 emission factors in this spreadsheet need to be revised to be based on the uncontrolled emission 

factors.

Note: Engines that are considered portable nonroad engines do not 

need to be included (see 40 CFR 1068.30)

Page 1 of 1
Type of Mixer: Drum Mix

PTE (ton/yr)

Process PM PM10 PM2.5 SO2 NOX CO VOC

Dryer/Mixer 17.8 12.4 1.57 5.94 20.5 70.2 17.3

Load-out/Silo Filling 0.60 0.60 0.60 - - 1.33 8.69

Conveying 8.10 2.97 2.97 - - - -

Screening 1.19 0.40 0.03 - - - -

Storage Piles 3.09 1.46 0.22 - - - -

Lime Silo Loading 4.82 4.82 4.82 - - - -

Auxiliary Heater 0.63 1.03 0.80 0.1 6.26 3.61 0.48

Engine/Generator 1.29 1.29 1.29 1.20 18.2 3.9 1.45

Total PTE 37.53 24.99 12.29 7.21 44.97 79.05 27.90

Operation Description gal/year gal/month

Diesel Engine 59,964 4,997

Maximum Fuel Usage

Potential To Emit Calculator for Hot Mix Asphalt Plants

3/23/2015

Page 1 of 1
Emissions from Drum Mix Hot Mix Asphalt Production - Criteria Pollutants

Facility Capacity: 123.285 ton/hr

Worst Case Totals

(lb/hr) (ton/yr)

PM 4.07 17.82

PM10 8.25 12.42

PM2.5 0.36 1.57

SO2 1.36 5.94

NOX 4.68 20.52

CO 16.03 70.20

VOC 3.95 17.28

PTE of PM/PM10

Emission Factor

(lb/ton) (lb/hr) (ton/yr)

PM 0.033 4.07 17.82

PM10 0.023 8.25 12.42

Note: These are the emission factors for the dryers controlled by dry filters.

PTE of PM2.5

Emission Factor

(lb/ton) (lb/hr) (ton/yr)

PM2.5 0.0029 0.36 1.57

Note: This is the emission factor for the dryers controlled by dry filters.

SO2/NOX/CO

Emission Factor Emission Factor

(lb/ton) (lb/hr) (ton/yr) (lb/ton)

SO2 0.0034 0.42 1.84 SO2 0.011

NOX 0.026 3.21 14.04 NOX 0.038

CO 0.13 16.03 70.20 CO 0.13

VOC

Emission Factor

(lb/ton) (lb/hr) (ton/yr)

VOC 0.032 3.95 17.28

Note:

1. Emission factors are from AP-42, Chapter 11.1, Tables 11.1-3, 11.1-4, 11.1-7, and 11.1-8 for Hot Mix Asphalt Plants (updated 03/2004), 

3/23/2015

Potential To Emit Calculator for Hot Mix Asphalt Plan

Emissions

PTE

Pollutant

PTE

PTE

Pollutant

Pollutant

Natural Gas Liquid Fuel

PTE

Pollutant Emissions

PTE

Emissions

Pollutant Emissions

Pollutant

Page 1 of 5
Methodology

PTE (lb/hr) = Facility Capacity (ton/hr) x EF (lb/ton)

PTE (ton/yr) = PTE (lbs/hr) x 8760 hr/yr x 1 ton/2000 lb

2. NOx emission factor for liquid fuel based on Technical Support Document for Asphalt Plants by Washington's Department of Ecology (up

based on 20 sets of performance test data - 75th percentile plus 10%.

Page 2 of 5
teria Pollutants

Purple values are pulled from other worksheet

Blue values are results

(lb/hr) (ton/yr)

1.36 5.94

4.68 20.52

16.03 70.20

lt Plants (updated 03/2004), except for NOx -see Note 2.

Mix Asphalt Plants

Emissions

Liquid Fuel

Page 3 of 5
s Department of Ecology (updated 01/2011). Value 

Page 4 of 5
Page 5 of 5
Emissions from Batch Mix Asphalt Production - Criteria Pollutants

Facility Capacity: 123.285 ton/hr

Worst Case Totals

(lb/hr) (ton/yr)

PM 5.18 22.68

PM10 3.33 14.58

PM2.5 1.02 4.48

SO2 10.85 47.52

NOX 14.18 62.10

CO 49.31 216.00

VOC 1.01 4.43

PM/PM10

Emission Factor

(lb/ton) (lb/hr) (ton/yr)

PM 0.042 5.18 22.68

PM10 0.027 3.33 14.58

Note: These are the emission factors for the dryers controlled by dry filters.

PM2.5

Emission Factor

(lb/ton) (lb/hr) (ton/yr)

PM2.5 0.0083 1.02 4.48

Note: This is the emission factor for the dryers controlled by dry filters.

SO2/NOX/CO

Emission Factor Emission Factor

(lb/ton) (lb/hr) (ton/yr) (lb/ton)

SO2 0.0046 0.57 2.48 SO2 0.088

NOX 0.025 3.08 13.50 NOX 0.12

CO 0.4 49.31 216.00 CO 0.4

VOC

Emission Factor

(lb/ton) (lb/hr) (ton/yr)

VOC 0.0082 1.01 4.43

Note:

1. Emission factors are from AP-42, Chapter 11.1, Tables 11.1-1, 11.1-5, 11.1-5, and 11.1-6 for Hot Mix Asphalt Plants (Updated 03/04).

Pollutant Emissions

Controlled/Limited PTE

Pollutant Emissions

PTE

Natural Gas Liquid Fuel

Pollutant Emissions Pollutant

PTE

Pollutant Emissions

Potential To Emit Calculator for Hot Mix Asphalt Plan

DO NOT USE THESE, YOU SPECIFIED DRUM MIX IN THE INPUTS!

Pollutant

PTE

3/23/2015

Page 1 of 5
Methodology

PTE (lb/hr) = Facility Capacity (ton/hr) x EF (lb/ton)

PTE (ton/yr) = PTE (lbs/hr) x 8760 hr/yr x 1 ton/2000 lb

Page 2 of 5
Purple values are pulled from other worksheet

Blue values are results

(lb/hr) (ton/yr)

10.85 47.52

14.18 62.10

49.31 216.00

lt Plants (Updated 03/04).

Liquid Fuel

Emissions

Mix Asphalt Plants

Page 3 of 5
Page 4 of 5
Page 5 of 5
Emissions from Load-Out and Silo Filling Operations - Criteria Pollutants

123.285 Facility Capacity (ton/hr)

325 Temp (used to calculate EF)

-0.5 Volatility (used to calculate EF)

Purple values are pulled from othe

Totals Blue values are results

(lb/hr) (ton/yr)

PM 0.1366 0.60

PM10 0.1366 0.60

PM2.5 0.1366 0.60

VOC 1.9844 8.69

CO 0.3031 1.33

Load-Out Emission Factor 1

(lb/ton) (lb/hr) (ton/yr)

Total PM 0.000522 0.0643 0.28

PM10

2

0.000522 0.0643 0.28

PM2.5

2

0.000522 0.0643 0.28

VOC3

0.003909 0.4820 2.11

CO 0.001349 0.1663 0.73

Silo Filling Emission Factor 1

(lb/ton) (lb/hr) (ton/yr)

Total PM 0.000586 0.0722 0.32

PM10

2

0.000586 0.0722 0.32

PM2.5

2

0.000586 0.0722 0.32

VOC3

0.012187 1.5024 6.58

CO 0.001109 0.1367 0.60

Note:

1. Emission factors are from AP-42, Chapter 11.1, Tables 11.1-14 and 11.1-16 for Hot Mix Asphalt Plants (Updated 03/04).

2. Assume PM10 and PM2.5 emissions are equal to PM emissions.

3. According to AP-42, Table 11.1-16, 94% of the TOC emissions from load-out operations are VOC. 100% of the TOC emissions from silo 

Methodology

PTE (lb/hr) = Facility Capacity (ton/hr) x EF (lb/ton)

PTE (ton/hr) = PTE (lbs/hr) x 8760 hr/yr x 1 ton/2000 lb

Pollutant

PTE

PTE

Potential To Emit Calculator for Hot Mix Asphalt Plants

Pollutant

PTE

Pollutant

3/23/2015

Page 1 of 2
Pollutants

le values are pulled from other worksheet

 values are results

Updated 03/04).

% of the TOC emissions from silo filling operations are VOC.

sphalt Plants

Page 2 of 2
Emissions from Aggregate Handling Operations

123.285 Facility Capacity (tons/hr)

50% Max. RAP Used (%) Purple values are pulled from other worksheet

3 # of Virgin Agg. Conveyors (#) Blue values are results

1 # of Virgin Agg. Screens (#)

2 # of RAP Conveyors (#)

1 # of RAP Screens (#)

PTE

(tons/yr)

Conveying Total PM 8.10

PM10 2.97

PM2.5 2.97

Screening Total PM 1.19

PM10 0.40

PM2.5 0.03

Conveying

Table 11.19.2-2 Max. Capacity Emission Factor1 Emission Factor1 Emission Factor1

(8/04) (ton/hr/unit) (lbs/ton) (lbs/hr/unit) (tons/yr) (lbs/ton) (lbs/hr/unit) (tons/yr) (lbs/ton) (lbs/hr/unit) (tons/yr)

Virgin Agg. Conveyors 3 61.6425 0.0030 0.185 4.86 0.0011 0.068 1.78 0.0011 0.068 1.78

RAP Conveyors 2 61.6425 0.0030 0.185 3.24 0.0011 0.068 1.19 0.0011 0.068 1.19

Screening

Table 11.19.2-2 Max. Capacity Emission Factor1 Emission Factor1 Emission Factor1

(8/04) (ton/hr/unit) (lbs/ton) (lbs/hr/unit) (tons/yr) (lbs/ton) (lbs/hr/unit) (tons/yr) (lbs/ton) (lbs/hr/unit) (tons/yr)

Virgin Agg. Screens 1 61.6425 0.0011 0.068 0.59 0.00037 0.023 0.20 0.000025 0.002 0.01

RAP Screens 1 61.6425 0.0011 0.068 0.59 0.00037 0.023 0.20 0.000025 0.002 0.01

Note:

1. Emission factors are from AP-42, Chapter 11.19, Table 11.19.2-2 for Crushed Stone Processing and Pulverized Mineral Processing (Updated 08/04).

 The emission factors selected are the ones with controlled since this facility is subject to NSPS, Subpart I.

2. Assume PM2.5 emissions are equal to PM10 emissions.

Methodology

PTE (lb/hr/unit) = Max. Capacity (ton/hr/unit) x EF (lb/ton)

PTE (ton/yr) = PTE (lbs/hr/unit) x 8760 (hr/yr) x 1 ton/2000 lb x Number of Units

Potential To Emit Calculator for Hot Mix Asphalt Plants

3/23/2015

Controlled

Pollutant

PM

Controlled

Source Number of Units

PM2.5

2 PM

PM10 PM2.5

PTE PTE PTE

PM10

Source Number of Units Limited PTE Limited PTE Limited PTE

Page 1 of 1
Emissions from Storage Piles

123.285 Facility Capacity (tons/hr)

1,079,977 Max. Annual Production (ton/yr), based on the operation of 8760 hr/yr.

1.8 Agg. Moisture (%) Purple values are pulled from other worksheet

15 Mean Wind Speed (MPH) Blue values are results

According to AP42, Chapter 13.2.4 - Aggregate Handling and Storage Piles (updated 11/06), the particulate emission factors for 

storage piles can be estimated from the following equation:

Ef = k x 0.0032 x (U/5)1.3

 (M/2)1.4

where:

Ef = Emission Factor (lbs/ton)

k = Particle size multipliers = 0.74 for PM, 0.35 for PM10, and 0.053 for PM2.5

U = Mean wind speed (MPH) = 15 MPH (provided by the facility)

M = Moisture content (%) = 1.8 % (provided by the facility)

Emission Factor Control Efficiency1PTE

(lb/ton) (%) (tons/yr)

PM 0.01145 50% 3.09

PM10 0.00541 50% 1.46

PM2.5 0.00082 50% 0.22

Note:

1. Since this facility is subject to NSPS, Subpart I, the particulate emissions control efficiency for storage piles is assumed to be 50%.

Methodology

PTE (ton/yr) = Max. Annual Production (ton/yr) x EF (lb/ton) x 1 ton/2000 lb x (1-Control Efficiency)

Pollutant

Potential To Emit Calculator for Hot Mix Asphalt Plants

3/23/2015

Page 1 of 1
Lime Silo Loading

25 Max. Hourly Load (ton/hr) Purple values are pulled from other worksheet

98% Bin Vent Control Efficiency (%) Blue values are results

Lime Silo Loading

Emission Factor Control Eff.

(lb/ton) % (lb/hr) (ton/yr)

PM 2.2 98% 1.100 4.82

PM10

2

2.2 98% 1.100 4.82

PM2.5

2

2.2 98% 1.100 4.82

Note:

1. Emission factors are from AP-42, Chapter 11.17, Table 11.17-4 for Lime Manufacturing (Updated 02/98)(SCC 3-05-016-15).

2. Assume PM10 and PM2.5 emissions are equal to PM emissions.

Methodology

PTE (lb/hr) = Max. Hourly Load (ton/hr) x EF (lb/ton) x (1-Control Eff.)

PTE (ton/hr) = PTE (lb/hr) x 8760 hr/yr x 1 ton/2000 lbs

Pollutant PTE

Controlled (8,760 hr/yr)

Potential To Emit Calculator for Hot Mix Asphalt Plants

3/23/2015

Page 1 of 1
Emissions from Auxiliary Heaters - Criteria Pollutants

10 Heat Input (MMBtu/hr) Purple values are pulled 

Blue values are results

Worst Case PTE (ton/yr) PM PM10 PM2.5 SO2 NOX

0.63 1.03 0.80 0.07 6.26

Fuel Type: Natural Gas Used: Y

Pollutant

PM PM10

2 PM2.53 SO2 NOX

Emission Factor1 (lb/MMSCF) 1.9 7.6 7.6 0.6 100

PTE (ton/yr) 0.08 0.33 0.33 0.03 4.29

Note:

1. Emission factors are from AP-42, Chapter 1.4, Tables 1.4-1 and 1.4-2 (updated 07/98).

2. PM10 emission factor is condensable and filterable PM combined. PM emission factor is for filterable PM only.

3. Assume PM2.5 emissions are equal to PM10 emissions.

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 MMSCF/1,020 MMBtu x EF (lb/MMSCF) x 8760 hr/yr x 1 ton/2000 lb

Fuel Type: Propane Used: Y Sulfur Content: 0.00

Pollutant

PM PM10

2 PM2.53 SO2 NOX

Emission Factor1 (lbs/kgal) 0.2 0.7 0.7 0 13

PTE (ton/yr) 0.10 0.34 0.34 0.00 6.22

Note:

1. Emission factors are from AP-42, Chapter 1.5, Tables 1.5 (updated 07/08).

2. PM10 emission factor is condensable and filterable PM combined. PM emission factor is for filterable PM only.

3. Assume PM2.5 emissions are equal to PM10 emissions.

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 kgal/91.5 MMBtu x EF (lb/kgal) x 8760 hr/yr x 1 ton/2000 lb

Fuel Type: Liquid Fuel Used: Y Sulfur Content: 0.002

Pollutant

PM PM10

2 PM2.5 SO2 NOX

Emission Factor1 (lb/kgal) 2.0 3.3 2.55 0.213 20

PTE (ton/yr) 0.63 1.03 0.80 0.07 6.26

Potential To Emit Calculator for Hot Mix Asphalt Plants

3/23/2015

Page 1 of 4
Note:

1. Emission factors are from AP-42, Chapter 1.3, Tables 1.3-1, 1.3-2, and 1.3-3 for Fuel Oil Combustion (updated 05/10

2. PM10 emission factor is condensable and filterable PM combined. PM emission factor is for filterable PM only.

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 kgal/140 MMBtu x EF (lb/kgal) x 8760 hr/yr x 1 ton/2000 lb

Page 2 of 4
Purple values are pulled from other worksheet

Blue values are results

CO VOC

3.61 0.48

CO VOC

84 5.5

3.61 0.24

 for filterable PM only.

hr/yr x 1 ton/2000 lb

%

CO VOC

7.5 1.0

3.59 0.48

 for filterable PM only.

%

CO VOC

5.0 0.34

1.56 0.11

 Asphalt Plants

Page 3 of 4
Oil Combustion (updated 05/10).

 for filterable PM only.

Page 4 of 4
Emissions from Generator/Engine - Criteria Pollutants

Engine Size: 134 hp

Diesel Used: Y

Worst Case PTE (ton/yr) PM PM10 PM2.5 SO2

1.29 1.29 1.29 1.20

Engine Type: Diesel Engine (<= 600 hp) Used: Y

Pollutant

PM2

PM10 PM2.5

2 SO2

Emission Factor1 (lbs/hp-hr) 2.20E-03 2.20E-03 2.20E-03 2.05E-03

PTE (ton/yr) 1.29 1.29 1.29 1.20

Note:

1. Emission factors are from Chapter 3.3, Table 3.3-1 (updated 10/96).

2. Assume PM and PM2.5 emissions are equal to PM10 emissions.

3. Assume TOC (total organic compounds) emissions equal to VOC emissions.

Methodology

PTE (ton/yr) = Engine Capacity (hp) x EF (lb/hp-hr) x 8760 hr x 1 ton/2000 lb

Engine Type: Diesel (> 600 hp) Used: N Sulfur Content:

Pollutant

PM PM10 PM2.5

2 SO2

Emission Factor1 (lbs/hp-hr) 0.0007 0.0007 0.0007 1.21E-05

Limited PTE (ton/yr) 0.00 0.00 0.00 0.00

Note:

1. Emission factors are from Chapter 3.4, Tables 3.4-1 and 3.4-2 for Large Stationary Diesel and Dual Fuel Engines (up

2. Assume PM2.5 emissions are equal to PM10 emissions.

3. Assume TOC (total organic compounds) emissions equal to VOC emissions.

Methodology

PTE (ton/yr) = Engine Capacity (hp) x EF (lb/hp-hr) x 8760 hr x 1 ton/2000 lb

Methodology:

Fuel Usage (gal/yr) = Total Engine Horsepower (hp) x 8,760 hr/yr x 7,000 Btu/hp-hr x 1 lb fuel/19,300 Btu x 1 

Fuel Usage (gal/yr) 59,964

Potential To Emit Calculator for Hot Mix Asphalt Plants

3/23/2015

Page 1 of 2
Purple values are pulled from other worksheet

Blue values are results

NOX CO VOC

18.19 3.92 1.45

NOX CO VOC3

3.10E-02 6.68E-03 2.47E-03

18.19 3.92 1.45

0.00 %

NOX CO VOC3

0.024 5.50E-03 7.05E-04

0.00 0.00 0.00

esel and Dual Fuel Engines (updated 10/96).

p-hr x 1 lb fuel/19,300 Btu x 1 gal/7.1 lb

ix Asphalt Plants

Page 2 of 2