From https://www.csb.gov/assets/1/6/csb_guidance_on_accidental_release_reporting.pdf

This document is 30 pages of questions and answers about the scope and implementation of the February 2020 rule.

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Release Reporting Rule, 40 C.F.R. Part 1604. The guidance is not a substitute for reading the rule itself and taking the time to understand the requirements of the rule as it applies to your facility, and any accompanying responsibilities that might arise to make a required report under the rule, following an accidental release.

This guidance does not constitute rulemaking by the CSB and may not be relied on to create a substantive or procedural right or benefit enforceable, at law or in equity, by any person. The CSB may decide to update this guidance without advance public notice to reflect changes in the CSB’s approach to implementing the rule or clarifying/updating the text of this publication, as may be required in the agency’s sole discretion in the performance of its mission. However, the CSB will strive to give ample notice pending any changes in policy guidance. Such future agency guidance will be released on the CSB website, found at www.csb.gov at the Legal/FOIA tab located at the bottom of the page. In addition, to determine whether the CSB has revised this document or to obtain a copy of the latest version of the Accidental Release Reporting Rule, contact the CSB’s Office of Investigations and Recommendations by email at report**At_Symbol_Here**csb.gov.

The contents of this document reflect the CSB’s Accidental Release Reporting Rule as published on February 5, 2020, on the CSB agency website and subsequently published as a final rule on February 21, 2020, in the Federal Register.