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Emission Inventory Guidance for Facilities

Starting with the 2011 Calendar Year, Air Management Services (AMS) will no longer use i-STEPS to collect and report annual air emissions inventories. AMS will implement the Pennsylvania Department of Environmental Protection’s (PADEP) Annual Emission Statement (AES) Online Web Application for the collection of air emissions inventory data from facilities in Philadelphia.

Checklist for entering Air Emissions via the AES Online System

Seven hands-on training sessions for facilities on the reporting functions of AES Online will be conducted from 10:00 AM until 3:00 PM at the PADEP, Southeast Regional Office (SERO) at 2 East Main Street, Norristown, PA 19401 on the following dates:

Monday, December 5, 2011
Wednesday, December 7, 2011
Thursday, December 8, 2011
Monday, December 12, 2011
Tuesday, December 13, 2011
Thursday, December 15, 2011
Tuesday, January 24, 2012

To register for a class, please contact Kathleen Varano from AMS at 215-685-7580 or by email at

Initial Letter to Facilities - Emission Inventory Training (i-STEPS to AES Online)
Directions to PADEP SERO
AES Online Registration Form (An electronic copy of the form is also available at

Go to the Support Files page, where programs and documentation that may be of assistance to the Emission Inventory are available for download from the AMS and EPA.