EPA Form 5900-82 

 OMB No. 2060-0336, Approval Expires 04/30/2012

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR PROCESS SOURCES (EUD-3) 

A. General Information 

Emissions unit ID ___________ Description __________________________________ 

SIC Code (4-digit) __________ SCC Code________ 

B. Emissions Unit Description

Primary use or equipment type _____________________________________________ 

Manufacturer __________________________ Model No. _______________________ 

Serial No. _____________________________ Installation date _____/_____/_____ 

Raw materials ____________________________________________________________ 

Finished products _________________________________________________________ 

Temporary source: ___No ___Yes 

C. Activity or Production Rates 

Activity or Production 

Rate 

Amount/Hour Amount/Year 

Actual Rate 

Maximum rate 

D. Associated Air Pollution Control Equipment 

Emissions unit ID ____________ Device Type___________________________________ 

Manufacturer _______________________ Model No______________________________ 

Serial No. ______________________________ Installation date _____/_____/_________ 

Control efficiency (%) _________.___ Capture efficiency (%) ________.___ 

Air pollutant(s) controlled ______________ Efficiency estimation method _______________ 
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E. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact 

assessment is an applicable requirement for this emissions unit (This is not common)). 

Stack height (ft) __________._____ Inside stack diameter (ft) _________._____ 

Stack temp (F) __________._____ Design stack flow rate (ACFM) __________.____ 

Actual stack flow rate (ACFM) ____________.____ Velocity (ft/sec) ____________.____ 
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INSTRUCTIONS FOR EUD-3 

EMISSIONS UNIT DESCRIPTION FOR PROCESS SOURCES 

This form is designed to describe emissions units for processes for which forms EUD-1 or EUD-2 are not 

appropriate. For example, sources such as rock crushers and asphalt batch plants. This form will help you to 

collect and organize technical information, including operational characteristics, applicable requirements, 

compliance terms, and emissions for each emissions unit. 

Section A - The emissions unit ID should be consistent with the one used in section I of form GIS. Enter the 

four-digit SIC code for the unit, which may be different form that used for the facility as a whole. In addition, 

complete the Source Classification Code (SCC), if known or available, but this is not mandatory. 

Section B - There may be other information that the permitting authority will need to know that is not specifically 

requested on the forms and that should be included on attachments. Such information would include information 

needed to adequately identify the emissions unit and to determine its applicable requirements. 

Section C - The amount of raw materials that are processed and/or the number of activities performed are 

values that are typically multiplied by emissions factors to calculate PTE and actual emissions. 

Section D - Identify and describe any associated air pollution control device. Attach copies of correspondence 

from the vendor documenting these values, if available, or indicate how these values were otherwise determined 

(e.g., AP-42). 

Section E - Complete this section only if ambient impact assessment is an applicable requirement or the facility is 

a temporary source. This is not common.