ODS Recordkeeping and Reporting

EPA has issued a series of regulations to phase out the production and import of Class I and Class II ozone-depleting substances (ODS). The regulations include reporting and recordkeeping requirements for producers, importers, and exporters of Class I and Class II ODS. EPA provides reporting forms and instructions to assist entities in fulfilling these requirements.

EPA also offers electronic reporting for quicker, simpler data submissions.  

Control Period Dates
Quarter 1 January 1–March 31
Quarter 2 April 1–June 30
Quarter 3 July 1–September 30
Quarter 4 October 1–December 31

A detailed control period calendar identifying when specific reports are due is also available.

Class I Substances (Except Methyl Bromide)

Instruction Documents:

Class I Reporting Forms

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Methyl Bromide

  • Methyl bromide reporting forms are due 45 days after the end of the reporting period.

Instruction Documents:

Methyl Bromide Forms

Methyl bromide laboratory suppliers: Use the Essential Use Holder and Laboratory Supplier Quarterly Report located with the Class I Reporting Forms to report on the amount of methyl bromide purchased from producers and/or importers and sold to laboratory customers. You will need to manually enter methyl bromide as a chemical in column A of Section 4 and Section 5 of the reporting form.

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EPA’s Electronic Reporting System

EPA offers an electronic reporting system as an alternative to paper-based reporting. Electronic reporting can reduce time and resources spent on reporting, save paper, and improve data quality.

To participate in the electronic reporting system, you will need to register with EPA's Central Data Exchange (CDX) and obtain an electronic signature. Once you initiate registration, EPA will authenticate your account in approximately 48 hours. You can then complete electronic forms and submit them through CDX.

To ensure proper use of the forms, you will need Microsoft Excel 2003. It is possible to complete the forms using other versions of Excel, but contact EPA first for guidance.


This comprehensive three-part guidance walks you through the process to register and submit your data electronically.

  1. Registering as a CDX User This document details the steps required to register as a CDX user. The registration process is a one-time process that must be completed prior to submitting data electronically.
  2. Preparing Data for Submission This document provides guidance on how to prepare data for submission.
  3. Submitting ODS Data to EPA This document provides guidance on how to submit data to EPA.

Electronic Forms

You need to register with CDX and create an electronic signature to electronically submit these forms to EPA. See these important notes for completing the electronic reporting forms.

Remember, you must submit electronic and hard copy forms for the first two quarters that you use the electronic reporting system. This will allow EPA to ensure a seamless transition to the electronic reporting system.

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