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Contributing Guide

Source: CONTRIBUTING.md

Welcome!

We’re so glad you’re thinking about contributing to this open source project! If you’re unsure about anything, just ask — or submit your issue or pull request anyway. The worst that can happen is we’ll politely ask you to change something. We appreciate all friendly contributions.

contact information

If you have questions or comments on the non-EPA versions of EJAM and EJSCREEN, please see ejanalysis.org

code repositories and open source contributions

We encourage you to read about this R package and project. Please see ejanalysis.org/status for information on the latest versions of EJAM and EJSCREEN, and links to documentation and the code repository.

This version of EJAM is not associated with the US EPA. It is an independent project that initially was based on the USEPA/EJAM-open v2.32.4 tool. The EPA version of the open source EJAM package repository was archived in mid-2025 with no plans for it to be further developed by EPA. Further development and any open source contributions will take place in this non-EPA EJAM repository.

All contributions to this project will be released under the MIT dedication or the CCO-1.0 license file dedication. By submitting a pull request or issue, you are agreeing to comply with a waiver of copyright interest. See the project’s README, LICENSE, and CONTRIBUTING policy (this page).

Notes regarding prior (EPA-associated) versions - for reference only:

Disclaimers and general information from EPA on open source were available as of mid-2025, and links to those old materials are provided below just for reference, even though this version of EJAM is not associated with EPA:

Disclaimer for GitHub Repository Content

This non-EPA version of EJAM was initially based on or forked from the EPA v2.32.4 version. For that EPA version, the following disclaimer applied, and the limitation on the seal and logo are still relevant to this non-EPA version:

  • The United States Environmental Protection Agency (EPA) GitHub project code was provided on an “as is” basis and the user assumes responsibility for its use. EPA has relinquished control of the information and no longer has responsibility to protect the integrity, confidentiality, or availability of the information. Any reference to specific commercial products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply their endorsement, recommendation or favoring by EPA.

  • The EPA seal and logo shall not be used in any manner to imply endorsement of any commercial product or activity by EPA or the United States Government.

Disclaimer for App

The following information was provided by EPA as of mid-2025, and is included here for reference only, as this version of EJAM is not associated with EPA – The old disclaimer was the following:

  • This software/application has been approved for release by the U.S. Environmental Protection Agency (USEPA). Although the software has been subjected to rigorous review, the USEPA reserves the right to update the software as needed pursuant to further analysis and review. No warranty, expressed or implied, is made by the USEPA or the U.S. Government as to the functionality of the software and related material nor shall the fact of release constitute any such warranty. Furthermore, the software is released on condition that neither the USEPA nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use.

Open-Source Code Policy

The following information was provided by EPA as of mid-2025, and is included here for reference only, as this version of EJAM is not associated with EPA: