December 2016 Update:

The eDEP Source Registration (SR) Package is currently unavailable while we convert to webforms. Facilities that are required to submit a 2016 SR Package (due in 2017) will be mailed a reminder letter when the forms are available for use.

Who Must File Source Registration?  

Questions and answers about who is required to file Source Registrations


Source Registration Filing Schedules & Deadlines

When is your facility due to file? Filing deadlines for 2016 are listed. You can download a filing schedule for all Source Registration filers.


How to File: Tips, Fact Sheets & Instructions

Read This First: What every filer must know, quick start instructions for eDEP, tips and guidance from the Help Desk, what's new for 2016, complete line-by-line instructions for all Source Registration forms. All filers should browse the Q&A.


eDEP Online Filing

A secure site for submitting environmental permits, transmittals, certifications, and reports electronically to MassDEP.


SCCs, Emission Factors & NAICS Codes

Valid Source Classification Codes (SCC) list. Link to EPA Emissions Factors and NAICS codes. The SCC list is updated for 2015.


Regulations & Guidance for Source Registration

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


Source Registration Contacts & Help Desk

Phone numbers and email for the Source Registration Help Desk and MassDEP Regional Office Data Managers (for changes facility names or ownership, or facility closure).