Questions and answers about who is required to file Source Registrations.

When is your facility due to file? Filing deadlines for 2011 are listed. You can download a filing schedule for all Source Registration filers. Updated Mar 10, 2011. 

Read this first: What every filer must know. Quick start instructions for eDEP. Tips and guidance from the Help Desk. Complete line-by-line instructions for all Source Registration forms. Computer-based training. All filers should browse the Q&A.

Valid Source Classification Codes (SCC) list. Link to EPA Emissions Factors and NAICS codes. The SCC list is updated for 2011 to add many additional valid codes from EPA.

This page provides a link to 310 CMR 7.12, the regulations that set the criteria and schedules for filing of Source Registrations.

Phone numbers and e-mail for the Source Registration Help Desk and MassDEP Regional Office Data Managers(for changing facility names, ownership, and closures).