Instructions

Step 1 Assign an ID number to each engine at your facility

Step 2 For each Non-Emergency (Prime) Engine, identify the Engine ID, Engine Type (select from drop down 

Step 3 For each Emergency Engine, identify the Engine ID, Engine Type (select from dropdown box), and Eng

Step 4 For each Auxiliary Heater, identify the Unit ID, Maximum Rating, and Fuel Type in 

Step 5 Click on the "Output" tab below to review your facility's Potential to Emit

Table 1

Engine Information - Non Emergency (Prime) Engines - ONLY

Engine ID (1,2, 3....) Engine Type

Select

Select

Select

Select

Select

Select

Select

Select

Select

Select

Table 2

Engine Information - Emergency Engines - ONLY

Engine ID (1,2, 3....) Engine Type

Select

Select

Select

Select

Select

Select

Select

Select

Select

Select

Table 3

Potential to Emit Calculator for Engines (Co

This spreadsheet helps estimate a facility's potential to emit. It is provided for the convenience of the permitted c

responsibility to determine their emissions. The permittee should consult with the reviewing au
Auxiliary Heaters

Unit ID Maxium Ratings (MMBtu/hr)

Total MMBtu/hr 0
ne Type (select from drop down box), and Engine Size in Table 1 below.

ct from dropdown box), and Engine Size in Table 2 below.

Fuel Type in Table 3 below.

Convert maximum power in kW to HP: kW 0 HP

Convert maximum power in HP to kW: HP 0 kW

****This does not convert electrical output in kW to mechanical output in HP. Please contact your reviewing authority if you 

Engine size (bhp - mechanical)

0

0

0

0

0

0

0

0

0

0

Engine Size (bhp - mechanical)

0

0

0

0

0

0

0

0

**Note: For generator sets, the engine size is not the electrical 

output of the engine. Input the maximum power of the engine. 

ulator for Engines (Compression Ignition Engines)

7/2/2014

nvenience of the permitted community. Emission factor sources are subject to revision or correction. It is the permittee's 

 consult with the reviewing authority to determine the appropriateness of this calculator for its source. 
Fuel Type 
reviewing authority if you need assistance.

It is the permittee's 
CO NOX SO2 VOC PM PM10 PM2.5

0 0 0 0 0 0 0

Potential to Emit - TPY

Potential to Emit Calculator for Engines (Compression Igntion Engine

7/2/2014
sion Igntion Engines)
Emissions Factors (g/kw-hr) CO

Select 0

Diesel - Non Emergency (Prime), Model Year 2014 or later, Rating <75HP 5

Diesel - Non Emergency (Prime), Model Year 2014 or later, Rating 75<HP≤751HP 3.5

Diesel - Non Emergency (Prime), Model Year 2014 or later, Rating >751 HP, generator set 3.5

Diesel - Non Emergency (Prime), Model Year 2014 or later, Rating >751 HP, non-generator set 3.5

Diesel - Non Emergency (Prime), Model Year 2007-2013, Rating <50 HP 5.5

Diesel - Non Emergency (Prime), Model Year 2007-2013, Rating 50≤HP<100 5

Diesel - Non Emergency (Prime), Model Year 2007-2013, Rating ≤100HP<175 5

Diesel - Non Emergency (Prime), Model Year 2007-2013, Rating 175≤HP=<751HP 3.5

Diesel - Non Emergency (Prime), Model Year 2007-2013,Rating >751 HP 3.5

Diesel - Emergency 4.063288937

Rich Burn LPG, Emergency 15.83952753

Lean Burn LPG, Emergency 23.71671192

Rich Burn Natural Gas - Emergency 15.83952753

Lean Burn Natural Gas - Emergency 23.71671192

Gasoline - Emergency 4.233606437

Rich Burn LPG 2007+ 6.5

Rich Burn LPG 2006 or earlier 15.83952753

Lean Burn LPG 2008+, Prime 5.364087435

Lean Burn LPG pre-2008 23.71671192

Lean Burn LPG Emergency <130 HP 518.9754593

Lean Burn LPG Emergency >=130HP 5.364087435

Natural Gas 2008+, Prime 5.364087435

Natural Gas pre-2008, rich burn 15.83952753

Natural Gas pre-2008, lean burn 23.71671192

Natural Gas Emergency <130 HP 518.9754593

Natural Gas Emergency >=130 HP 5.364087435

Gasoline 4.233606437

Landfill/Digester Gas 6.705109293

Emission Factors are taken from the NSPS standards and AP-42. These factors are intended to be conservative. Actual emissio

specific NSPS standard for their engine is lower than the EF used here. Where needed, the following conversions were used: 

Potential to Emit Calculator for Engines (Com
NOX SO2 VOC PM PM10 PM2.5

0 0 0 0 0 0

4.7 0.007381439 0.19 0.03 0.03 0.03

0.4 0.007381439 0.19 0.02 0.02 0.02

0.67 0.007381439 0.19 0.03 0.03 0.03

3.5 0.007381439 0.19 0.04 0.04 0.04

9.2 0.007381439 1.502443664 0.8 0.8 0.8

7.5 0.007381439 1.502443664 0.4 0.4 0.4

4 0.007381439 1.502443664 0.3 0.3 0.3

4 0.007381439 1.3 0.2 0.2 0.2

6.4 0.007381439 1.3 0.2 0.2 0.2

18.85658039 0.007381439 1.502443664 1.338208931 1.338208931 1.338208931

9.665518144 0.002503667 0.12603495 0.082646567 0.082646567 0.082646567

17.37238503 0.002503667 0.502436626 0.039075518 0.039075518 0.039075518

9.665518144 0.002503667 0.12603495 0.082646567 0.082646567 0.082646567

17.37238503 0.002503667 0.502436626 0.039075518 0.039075518 0.039075518

6.691044656 0.359491581 9.124151804 0.438567563 0.438567563 0.438567563

3.8 0.002503667 0.12603495 0.082646567 0.082646567 0.082646567

9.665518144 0.002503667 0.12603495 0.082646567 0.082646567 0.082646567

2.682043717 0.002503667 1.341021859 0.039075518 0.039075518 0.039075518

17.37238503 0.002503667 0.502436626 0.039075518 0.039075518 0.039075518

13.41021859 0.002503667 0.502436626 0.082646567 0.082646567 0.082646567

2.682043717 0.002503667 1.341021859 0.082646567 0.082646567 0.082646567

2.682043717 0.002503667 1.341021859 0.039075518 0.039075518 0.039075518

9.665518144 0.002503667 0.12603495 0.082646567 0.082646567 0.082646567

17.37238503 0.002503667 0.502436626 0.039075518 0.039075518 0.039075518

13.41021859 0.002503667 0.502436626 0.082646567 0.082646567 0.082646567

2.682043717 0.002503667 1.341021859 0.082646567 0.082646567 0.082646567

6.691044656 0.359491581 9.124151804 0.438567563 0.438567563 0.438567563

4.023065576 0.002503667 1.341021859 0.082646567 0.082646567 0.082646567

be conservative. Actual emissions may be lowered depending on the exact model year and power rating for an individual engine. Owner/o

wing conversions were used: 1 hp = 0.7457 kW, 1 lb = 453.592 g, average BSFC = 7000 Btu/hp-hr.

ator for Engines (Compression Igntion Engines)

7/2/2014
 an individual engine. Owner/operators may use a lower EF if the 
Non Emergency Diesel Engines

Engine ID Engine Size (BHP) Convert to KW

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

Emergency Engines

Engine ID Engine Size (BHP) Convert to KW

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

Total MMBtu

Potential to Emit Calculator for Engines (Compre
VLOOkUP CO NOX

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Total Emissions from Prime Engines 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Select 0 0

Total Emissions from Emergency Engines 0 0

Natural Gas Boiler 0 0

0

Potential to Emit Calculator for Engines (Compression Ignition Engines)

7/2/2014
SO2 VOC PM PM10 PM2.5

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

TPY