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 maximum rating and fuel type in Table 3 below.

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 Engin

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

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

Unit ID Maximum Rating (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.

below.

Convert maximum power in kW to HP: kW 0 HP

Convert maximum power in HP to kW: 1000 HP 745.7 kW

***This does not convert eletrical output in kW to mechanical output in HP. Please contact your reviewing authority for assit

Engine size (bhp - mechanical)

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. 

it Calculator for Engines (Spark Ignition Engines)

7/2/2014

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

uld consult with the reviewing authority to determine the appropriateness of this calculator for its source. 
Fuel Type
r reviewing authority for assitance.

ection. It is the permittee's 

or assitance.

Attainment/Unclassifiable

Moderate Nonattainment

Serious Nonattainment

nt/Unclassifiable Attainment/Unclassifiable

 Nonattainment Marginal Nonattainment

onattainment Moderate Nonattainment

Serious Nonattainment 

Severe Nonattainment

Extreme Nonattainment
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 (Spark Ignition Engines)

7/2/2014
Emissions Factors (g/kw-hr) CO NOX

Select 0 0

Diesel - Non Emergency (Prime), Model Year 2014 or later, Rating <75HP 5 4.7

Diesel - Non Emergency (Prime), Model Year 2014 or later, Rating 75<HP≤751HP 3.5 0.4

Diesel - Non Emergency (Prime), Model Year 2014 or later, Rating >751 HP, generator set 3.5 0.67

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

Diesel - Non Emergency (Prime), Model Year 2007-2013, Rating <50 HP 5.5 9.2

Diesel - Non Emergency (Prime), Model Year 2007-2013, Rating 50≤HP<100 5 7.5

Diesel - Non Emergency (Prime), Model Year 2007-2013, Rating ≤100HP<175 5 4

Diesel - Non Emergency (Prime), Model Year 2007-2013, Rating 175≤HP=<751HP 3.5 4

Diesel - Non Emergency (Prime), Model Year 2007-2013,Rating >751 HP 3.5 6.4

Diesel - Emergency 4.063289 18.85658

Rich Burn LPG, Emergency 15.83953 9.665518

Lean Burn LPG, Emergency 23.71671 17.37239

Rich Burn Natural Gas - Emergency 15.83953 9.665518

Lean Burn Natural Gas - Emergency 23.71671 17.37239

Gasoline - Emergency 4.233606 6.691045

Rich Burn LPG, Non-Emergency (Prime) 6.5 3.8

Lean Burn LPG, Non- Emergency (Prime) 2.682044 1.341022

Natural Gas, Non-Emergency (Prime) 2.682044 1.341022

Gasoline, Non Emergency (Prime) 6.5 3.8

Landfill/Digester Gas, Non Emergency (Prime) 6.705109 2.682044

Rich Burn LPG 2006 or earlier 15.83953 9.665518

Lean Burn LPG pre-2008 23.71671 17.37239

Lean Burn LPG Emergency <130 HP 518.9755 13.41022

Lean Burn LPG Emergency >=130HP 5.364087 2.682044

Natural Gas pre-2008, rich burn 15.83953 9.665518

Natural Gas pre-2008, lean burn 23.71671 17.37239

Natural Gas Emergency <130 HP 518.9755 13.41022

Natural Gas Emergency >=130 HP 5.364087 2.682044

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

Owner/operators may use a lower EF if the specific NSPS standard for their engine is lower than the EF used here. Where nee

hr.

Potential to Emit Calculator for Engines (Spark Ignitio

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

0 0 0 0 0

0.007381 0.19 0.03 0.03 0.03

0.007381 0.19 0.02 0.02 0.02

0.007381 0.19 0.03 0.03 0.03

0.007381 0.19 0.04 0.04 0.04

0.007381 1.502444 0.8 0.8 0.8

0.007381 1.502444 0.4 0.4 0.4

0.007381 1.502444 0.3 0.3 0.3

0.007381 1.3 0.2 0.2 0.2

0.007381 1.3 0.2 0.2 0.2

0.007381 1.502444 1.338209 1.338209 1.338209

0.002504 0.126035 0.082647 0.082647 0.082647

0.002504 0.502437 0.039076 0.039076 0.039076

0.002504 0.126035 0.082647 0.082647 0.082647

0.002504 0.502437 0.039076 0.039076 0.039076

0.359492 9.124152 0.438568 0.438568 0.438568

0.002504 0.126035 0.082647 0.082647 0.082647 6.5

0.002504 0.938715 0.039076 0.039076 0.039076

0.002504 0.938715 0.039076 0.039076 0.039076

0.359492 9.124152 0.438568 0.438568 0.438568 6.5

0.002504 1.341022 0.082647 0.082647 0.082647

0.002504 0.126035 0.082647 0.082647 0.082647

0.002504 0.502437 0.039076 0.039076 0.039076

0.002504 0.502437 0.082647 0.082647 0.082647

0.002504 1.341022 0.082647 0.082647 0.082647

0.002504 0.126035 0.082647 0.082647 0.082647

0.002504 0.502437 0.039076 0.039076 0.039076

0.002504 0.502437 0.082647 0.082647 0.082647

0.002504 1.341022 0.082647 0.082647 0.082647

servative. Actual emissions may be lowered depending on the exact model year and power rating for an individual engine. 

EF used here. Where needed, the following conversions were used: 1 hp = 0.7457 kW, 1 lb = 453.592 g, average BSFC = 7000 Btu/hp

nes (Spark Ignition Engines)
dual engine. 

e BSFC = 7000 Btu/hp-
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
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 (Spark 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