{"id":91,"date":"2016-03-22T17:30:41","date_gmt":"2016-03-22T17:30:41","guid":{"rendered":"http:\/\/newvista.cira.colostate.edu\/Improve\/?page_id=91"},"modified":"2026-01-07T21:39:28","modified_gmt":"2026-01-07T21:39:28","slug":"rhr-guidance-documents","status":"publish","type":"page","link":"https:\/\/vista.cira.colostate.edu\/Improve\/rhr-guidance-documents\/","title":{"rendered":"RHR Guidance Documents"},"content":{"rendered":"\n<p>More information regarding visibility and Regional Haze can be found on <strong><a href=\"https:\/\/www.epa.gov\/visibility\">EPA&#8217;s Regional Haze website<\/a><\/strong>.<\/p>\n\n\n\n<p><strong>RHR Guidance Documents:<\/strong><\/p>\n\n\n\n<p><strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/RHR.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Regional Haze Rule<\/a><\/strong>\u00a0(July, 1999)<\/p>\n\n\n\n<p>EPA memo &#8211; <a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/memo_data_for_regional_haze_0.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Recommendation for the Use of Patched and Substituted Data and Clarification of Data Completeness for Tracking Visibility Progress for the Second Implementation Period of the Regional Haze Program<\/strong><\/a> (June 3, 2020)<\/p>\n\n\n\n<p>EPA memo &#8211; <strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/memo_data_for_regional_haze_technical_addendum.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Technical addendum including updated visibility data through 2018 for the memo titled \u201cRecommendation for the Use of Patched and Substituted Data and Clarification of Data Completeness for Tracking Visibility Progress for the Second Implementation Period<\/a><\/strong> (June 3, 2020)<\/p>\n\n\n\n<p><a href=\"https:\/\/www.epa.gov\/visibility\/technical-support-document-epas-updated-2028-regional-haze-modeling\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>EPA Technical Support Document for EPA\u2019S Updated 2028 Regional Haze Modeling<\/strong><\/a> (September 19, 2019)<\/p>\n\n\n\n<p><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/8-20-2019_-_regional_haze_guidance_final_guidance.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>EPA Guidance on Regional Haze State Implementation Plans for the Second Implementation Period<\/strong><\/a> (final August 2019)<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/www.epa.gov\/visibility\/technical-guidance-tracking-visibility-progress-second-implementation-period-regional\" target=\"_blank\" rel=\"noreferrer noopener\">EPA Technical Guidance on Tracking Visibility Progress for the Second Implementation Period of the Regional Haze Program<\/a><\/strong> (December 20, 2018)<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/RHRfull.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Complete Visibility Protection Rule<\/a><\/strong>:\u00a0EPA&#8217;s full visibility protection regulations, which consolidate EPA&#8217;s 1980 visibility regulations and 1999 regional haze rule.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/RHRFactSheet.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Guidance on Implementing Regional Haze Program: Fact Sheet<\/a><\/strong><\/p>\n\n\n\n<p><strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/RHRNaturalConditions.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Estimating Natural Visibility Conditions Under the Regional Haze Rule: Guidance Document<\/a><\/strong>\u00a0(September 2003)<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/RHRTrackingProgress.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Tracking Progress Under the Regional Haze Rule: Guidance Document<\/a><\/strong>\u00a0(September 2003)<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/RHRRevisionsFactSheet.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Revisions to the Regional Haze Rule Incorporating Provisions Related to Stationary Sources of Sulfur Dioxide for Nine Western States and Eligible Indian Tribes: Fact Sheet<\/a><\/strong>\u00a0(May 2003)<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/RHRRevisionsFinal.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Revisions to the Regional Haze Rule Incorporating Provisions Related to Stationary Sources of Sulfur Dioxide for Nine Western States and Eligible Indian Tribes: Final Rule<\/a>\u00a0<\/strong><\/p>\n\n\n\n<p><strong>Other Related Documents:<\/strong><\/p>\n\n\n\n<p><strong><a href=\"https:\/\/improvevisibility.org\/docs\/RHR\/Guidance%20Documents\/VisibilityMonitoringGuidance.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Visibility Monitoring Guidance, EPA-454\/R-99-003<\/a><\/strong>\u00a0(June, 1999)<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>More information regarding visibility and Regional Haze can be found on EPA&#8217;s Regional Haze website. RHR Guidance Documents: Regional Haze Rule\u00a0(July, 1999) EPA memo &#8211; Recommendation for the Use of Patched and Substituted Data and Clarification of Data Completeness for Tracking Visibility Progress for the Second Implementation Period of the Regional Haze Program (June 3, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-91","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/91","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/comments?post=91"}],"version-history":[{"count":19,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/91\/revisions"}],"predecessor-version":[{"id":4780,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/91\/revisions\/4780"}],"wp:attachment":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/media?parent=91"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}