Emission Inventory

Emissions Inventory reporting is required by Regulation 61-62.1 Section III and a facility's Title V permit. These Emissions Inventory reports shall be submitted to the manager of the Emissions Inventory Section of the Bureau of Air Quality. All other reports required by a facility's Title V permit shall be submitted to the entity specified in the permit.

Reporting 

Revised Regulation 61-62.1, Section III - Emissions Inventory (pdf) (Effective 8/25/2017)
Note: Emissions from non-fugitive and fugitive sources (excluding vehicle engine emissions) are to be used when determining a facility's "Inventory Source Type" and when reporting a facility's emissions to comply with this Regulation.

Do I need to do an Emissions Inventory? (pdf)

SLEIS

State and Local Emissions Inventory System (SLEIS) is the Emissions Inventory electronic reporting tool. If you have any questions, please contact Chad Wilbanks at 803-898-4106

Data and Reporting Guidance 

2024 EI Webinar Slides (2023 data) (pdf)

Template Letter for 2021 Title V Emissions Reporting (pdf)

SLEIS Training Slides (pdf)
Information on gathering your data & performing calculation

SLEIS Home Page 
Data Gathering Tool

SLEIS Training Video Playlist 
SCDES YouTube Channel

HAPs of Primary Concern (pdf)
Table of HAPs to report at any level (i.e., no de minimis) within your facility. All other HAPs are not required to be reported (but will be accepted) if less than 200 lbs facility-wide

Control Device Downtime Example (pdf)
Example of how to account for Control Device downtime in the Inventory

Source Test Guidance (pdf)

Emissions Estimating Tools 

Multisource Test Calculator Tool (xls)
Spreadsheet template that assists in calculating emissions using results of a Department-approved source test. Please note that all templates are examples for use at your discretion only. Feel free to download & modify for your needs

Example Multisource Test Calculator Modification #1 for Coal and Woodwaste Boilers (xls)
This template includes MMBTU and Condensable Particulate Matter (PM) calculations

Example Multisource Test Calculator Modification #2 for Multiple Sources (xls)
alternative source test calculation template

Fuel Oil Template (xls)
A template to calculate particulate emissions from #6 Fuel Oil including condensable PM

Stationary RICE Factor Tool

Stationary RICE Instructions (pdf)

AP-42 
5th edition by Chapter

Emission Inventory Improve Program (EIIP) 
Preferred Methods of estimating emissions from point sources (BAQ staff implement these methods in developing emission estimates)

FIRE for Windows®

Rule Effectiveness Help (pdf) 
"How to Incorporate the Effects of Control Device Efficiencies and Malfunctions into Emissions Inventory Estimates."

Software to assist those preparing inventories

Landfill Air Emissions Estimation Model

Storage Tank Emissions - TANKS for Windows®

Waste Water Treatment Plants - WATER9 Model

Polyester Resin Plastic Products Fabrication Emission Estimates

Unified Emission Factors (pdf)  
Preferred method for estimating emissions of Styrene and Methyl Methacrylate from open molding of resin composites including the Boat Manufacturing Industry but not the Reinforced Plastic Composites Industries covered by 40 CFR 63, Subpart WWWW.

MACT Final Rule for Reinforced Plastic Composite Production (40 CFR 63, Subpart WWWW) 
Preferred method for estimating emissions from these facilities. (Note: For the purpose of Emission Inventories, all processes at your facility should have emissions estimated including those that may be exempted from this Emission Standard.) (If your process differs from those described in this document use above Unified Emission Factors for estimating emissions.)

Catalyst Used in the Open Molding of Composites (pdf)  
Preferred method of estimating emissions from catalyst used in resin composites.

Polyurethane Foam  
Emission estimation assistance for Diphenyl Methane Diisocyanate (MDI) emissions from polyurethane foam

Catalyst Used in the Non-Open Molding of Composites (pdf)  
Preferred method of estimating emissions from catalyst used in resin composites.