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itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"> <a class="usa-breadcrumb__link" itemscope itemtype="http://schema.org/Thing" itemprop="item" href="/"> <span itemprop="name">Home</span> </a> <meta itemprop="position" content="1" /> </li> <li class="usa-breadcrumb__list-item usa-current" itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"> <span itemprop="name">Resources</span> <meta itemprop="position" content="2" /> </li> </ol> </nav> </div> <div data-drupal-messages-fallback class="hidden"></div> </div> <div> <div id="block-echo-page-title"> <h1> <span property="schema:name">Resources</span> </h1> </div> <div id="block-echo-echo-system-main"> <article data-history-node-id="166" about="/resources" typeof="schema:WebPage"> <span property="schema:name" content="Resources" class="hidden"></span> <div> <div property="schema:text"><ul><li><a href="https://echo.epa.gov/resources/echo-site-map">ECHO Site Map</a></li><li><a href="https://echo.epa.gov/resources/general-info">Resources - General Information</a><ul><li><a href="https://echo.epa.gov/resources/general-info/learn-more-about-echo">ECHO Quick Start Guide</a></li><li><a href="https://echo.epa.gov/resources/general-info/tool-guide">ECHO Tool Guide</a></li><li><a href="https://echo.epa.gov/resources/general-info/echo-faq">Frequently Asked Questions</a><ul><li><a href="https://echo.epa.gov/resources/general-info/echo-faq/air-data-system">How New National Air Data System Affects ECHO Data Display</a></li></ul></li><li><a href="https://echo.epa.gov/resources/general-info/whats-new">What's New</a></li><li><a href="https://echo.epa.gov/resources/general-info/website-known-issues">Website Known Issues</a></li><li><a href="https://echo.epa.gov/resources/general-info/release-notes">ECHO Release Notes</a></li><li><a href="https://echo.epa.gov/resources/general-info/contact-us">Contact Us about ECHO</a></li><li><a href="https://echo.epa.gov/resources/general-info/listserv">Join the ECHO Listservs</a></li><li><a href="https://echo.epa.gov/resources/general-info/echo-use">ECHO Use</a></li><li><a href="https://echo.epa.gov/resources/general-info/fy2023-echo-use">FY2023 ECHO Use</a></li><li><a href="https://echo.epa.gov/resources/general-info/loading-tool-modernization">Water Pollutant Loading Tool Modernization</a></li></ul></li><li><a href="https://echo.epa.gov/resources/echo-data">Resources - ECHO Data</a><ul><li><a href="https://echo.epa.gov/resources/echo-data/about-the-data">About the Data</a></li><li><a href="https://echo.epa.gov/resources/echo-data/data-entry-requirements">Data Entry Requirements</a></li><li><a href="https://echo.epa.gov/resources/echo-data/known-data-problems">Known Data Problems</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-websites">Access State Websites</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data">State Comments on Frozen Data</a><ul><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2022">State Comments on Frozen Data - 2022</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2021">State Comments on Frozen Data - 2021</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2020">State Comments on Frozen Data - 2020</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2019">State Comments on Frozen Data - 2019</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2018">State Comments on Frozen Data - 2018</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2017">State Comments on Frozen Data - 2017</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2016">State Comments on Frozen Data - 2016</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2015">State Comments on Frozen Data - 2015</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2014">State Comments on Frozen Data - 2014</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2013">State Comments on Frozen Data - 2013</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2012">State Comments on Frozen Data - 2012</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2011">State Comments on Frozen Data - 2011</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2010">State Comments on Frozen Data - 2010</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2009">State Comments on Frozen Data - 2009</a></li><li><a href="https://echo.epa.gov/resources/echo-data/state-comments-frozen-data/2008">State Comments on Frozen Data - 2008</a></li></ul></li></ul></li><li><a href="https://echo.epa.gov/resources/guidance-policy">Resources - Guidance and Policy</a><ul><li><a href="https://echo.epa.gov/resources/guidance-policy/guide-to-regulated-facilities">Guide to Regulated Facilities in ECHO</a></li></ul></li></ul></div> </div> </article> </div> </div> </article> </div> </div> </main>  <div class="text-right padding-right-3 padding-bottom-1 epa-footer"> <a href="#" class="top-of-page" title=""> <svg role="img" aria-label="Top of page"> <use href="/themes/custom/epa_uswds/images/sprite.artifact.svg#arrow"></use> </svg> <span> Top of Page </span> </a> </div> <footer class="footer epa-footer" role="contentinfo"> <div class="l-constrain"> <img class="footer__epa-seal" src="https://www.epa.gov/themes/epa_theme/images/epa-seal.svg" alt="United States Environmental Protection Agency" height="100" width="100"> 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