Combined Air Emissions Reporting System (CAERS)
Introduction
CAERS is an application that allows industry from subscribed State, Local, or Tribal authorities (SLTs) to report their air emissions so you can:
- Meet SLT-specific air emissions reporting requirements
- Report air emissions annually and/or triennially per the Air Emissions Reporting Rule (AERR, 40 CFR 51) via your SLT.
- Optionally, get a head start on reporting to the Toxics Release Inventory (TRI, 40 CFR 372), to be finished in TRI-MEweb when reporting shared toxic air emissions in the relevant form.
| OMB Control No | Title |
|---|---|
| 2060-0580 | Air Emissions Reporting Requirements (AERR) (Renewal) |
| 2070-0212 | Toxic Chemical Release Reporting (Renewal) |
| 2060-0003 | Prevention of Significant Deterioration and Non-Attainment New Source Review (Renewal) |
This page contains resources for CAERS users (preparers, certifiers).
CAERS V5 User Guide
- CAERS V5 User Guide (pdf)
- CAERS V3 Glossary of Terms (pdf)
- Default Heat Content Ratios for CAERS (pdf)
- NEI-TRI pollutant crosswalk: Visit the Product Design Team page and find it under "State/Local/Tribal (SLT), National Emission Inventory (NEI), Toxic Release Inventory (TRI) Mapping"
- Greenhouse Gas Reporting Program Emission Factors (xlsx)
CAERS V5 Trainings
Introduction to CAERS
- All Reporters
- Mississippi
User Interface
- All Reporters
- District of Columbia:
Reporting Control Devices
- Part 1: Concepts
- Part 2: Reporting Steps and Single Control Examples
- Part 3: Multiple and Complex Control Examples (forthcoming)
- CAERS V5 Reporting Control Devices (pptx)
Bulk Upload
Please note that excel downloads and uploads can take time if you have a large amount of data. You may be able to upload and download faster if you convert your excel file to/from JSON format. You may use an excel-JSON converter for this process. If you would like to work in JSON directly, see instructions below.
Report via JSON Upload
- CAERS JSON Reference Data (xlsx)
- Open API Spec and Data Exchange Template (DET), scroll down to Resources in the Exchange Network site
CAERS Additional Resources
- NAICS 2022: This file contains a comparison of 2017 to 2022 NAICS: NAICS 2017 to 2022 Comparison (xlsx) . If NAICS for your facility have been discontinued, please contact your SLT to determine the most appropriate updated NAICS to use.
- Source Classification Codes Search and Download
- WebFIRE Emission Factor Search and Download
- Greenhouse Gas Reporting Program Emissions Factor Search and Download
- Other Emission Factor Search (e.g. Landfill Emissions Emission Factors Estimation Tool LandGEM).
- EPA National Emissions Inventory Reporting Codes
CAERS V4 Trainings
These trainings are still valid but users should note that older screens appear in the trainings that may be different for the updated screens used in the current version of CAERS.
User Interface
-
- Idaho:
- Maine:
- Rhode Island:
- Welcome to CAERS V4 for Rhode Island (pdf)
- RI CAERS V4 Training 1 Video
- Why Report HAPS video: RI CAERS V4 Training 2 Video
- Process Throughput in Hours video: RI CAERS V4 Training 3 Video
- All Reporters: