{"id":899,"date":"2026-02-12T10:57:29","date_gmt":"2026-02-12T17:57:29","guid":{"rendered":"https:\/\/www.env.nm.gov\/hazardous-waste\/lanl\/2026-administrative-compliance-orders\/"},"modified":"2026-02-13T09:06:20","modified_gmt":"2026-02-13T16:06:20","slug":"2026-administrative-compliance-orders","status":"publish","type":"page","link":"https:\/\/www.env.nm.gov\/hazardous-waste\/lanl\/2026-administrative-compliance-orders\/","title":{"rendered":"2026 Administrative Compliance Orders"},"content":{"rendered":"\n<p>NMED issued administrative compliance orders to LANL on February 11, 2026 to address compliance with various regulatory requirements. The link to the enforcement actions and the list of attachments for each action are available below.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Los Alamos National Laboratory (LANL) Hexavalent Chromium Plume &#8211; Hazardous Waste Bureau ACO<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/2026-02-11_HWB_26-03_CED_ACO_LANL_Chromium_Plume.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/2026-02-11_HWB_26-03_CED_ACO_LANL_Chromium_Plume.pdf\">Administrative Compliance Order HWB-26-03<\/a><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>ATTACHMENT<\/strong><\/td><td><strong>DOCUMENT NAME<\/strong><\/td><\/tr><tr><td>Attachment 1<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-1-\u2013-March-1-2005.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-1-\u2013-March-1-2005.pdf\">Compliance Order on Consent<\/a><\/td><\/tr><tr><td>Attachment 2<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-2-\u2013-December-29-2005.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-2-\u2013-December-29-2005.pdf\">Interim Measures Work Plan Requirement, Groundwater Contaminants Detected in the Aquifer at R-28<\/a><\/td><\/tr><tr><td>Attachment 3<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-3-\u2013-March-31-2006.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-3-\u2013-March-31-2006.pdf\">Interim Measures Work Plan for Chromium Contamination in Groundwater<\/a><\/td><\/tr><tr><td>Attachment 4<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-4-\u2013-May-5-2006.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-4-\u2013-May-5-2006.pdf\">Approval with Modifications for the \u201cInterim Measures Work Plan for Chromium Contamination in Groundwater<\/a><\/td><\/tr><tr><td>Attachment 5<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-5-July-31-2008.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-5-July-31-2008.pdf\">Fate and Transport Investigations Update for Chromium Contamination in Sandia Canyon<\/a><\/td><\/tr><tr><td>Attachment 6<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-6-\u2013-August-31-2009.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-6-\u2013-August-31-2009.pdf\">Modification of Approval of Drilling Work Plan for Los Alamos and Pueblo Canyons Groundwater Monitoring Well Installation, Direction to Install Chromium Investigation Well R-50<\/a><\/td><\/tr><tr><td>Attachment 7<\/td><td><a href=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/LA-UR-09-06450\" data-type=\"link\" data-id=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/LA-UR-09-06450\">Investigation Report for Sandia Canyon<\/a><\/td><\/tr><tr><td>Attachment 8<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-8-\u2013-February-9-2010.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-8-\u2013-February-9-2010.pdf\">Approval with Modification, Investigation Report for Sandia Canyon<\/a><\/td><\/tr><tr><td>Attachment 9<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-9-\u2013-July-30-2010.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-9-\u2013-July-30-2010.pdf\">Phase II Investigation Work Plan for Sandia Canyon<\/a><\/td><\/tr><tr><td>Attachment 10<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-10-\u2013-June-18-2012.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-10-\u2013-June-18-2012.pdf\">Proposal to Perform Interim Measure Alternatives Analysis for Chromium in Sandia and Mortandad Canyon<\/a><\/td><\/tr><tr><td>Attachment 11<\/td><td><a href=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ERID-228624\" data-type=\"link\" data-id=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ERID-228624\">Phase II Investigation Report for Sandia Canyon<\/a><\/td><\/tr><tr><td>Attachment 12<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-12-December-21-2012.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-12-December-21-2012.pdf\">Proposal to Submit Interim Measures Work Plan for Chromium Contamination in Groundwater<\/a><\/td><\/tr><tr><td>Attachment 13<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-13-\u2013-January-25-2013.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-13-\u2013-January-25-2013.pdf\">Response, Proposal to Submit Interim Measures Work Plan for Chromium Contamination in Groundwater<\/a><\/td><\/tr><tr><td>Attachment 14<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-14-April-30-2013.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-14-April-30-2013.pdf\">Interim Measures Work Plan for the Evaluation of Chromium Mass Removal<\/a><\/td><\/tr><tr><td>Attachment 15<\/td><td><a href=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ESHID-600458\" data-type=\"link\" data-id=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ESHID-600458\">Interim Measures Work Plan for Chromium Plume Control<\/a><\/td><\/tr><tr><td>Attachment 16 <\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-16-July-28-2015.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-16-July-28-2015.pdf\">Work Plan for Chromium Plume Center Characterization<\/a><\/td><\/tr><tr><td>Attachment 17 <\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-17-\u2013-October-15-2015.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-17-\u2013-October-15-2015.pdf\">Approval with Modifications, Interim Measures Work Plan for Chromium Plume Control<\/a><\/td><\/tr><tr><td>Attachment 18<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-18-\u2013-October-15-2015.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-18-\u2013-October-15-2015.pdf\">Approval with Modifications, Work Plan for Chromium Plume Center Characterization<\/a><\/td><\/tr><tr><td>Attachment 19 <\/td><td><a href=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ESHID-601048\" data-type=\"link\" data-id=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ESHID-601048\">Drilling Work Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization Injection Wells CrIN-1 through CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 20<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-20-January-22-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-20-January-22-2016.pdf\">Approval with Modifications, Drilling Work Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization Injection Wells CrIN-1 through CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 21<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-21-December-13-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-21-December-13-2016.pdf\">Drilling Work Plan for Groundwater Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 22<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-22-January-4-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-22-January-4-2017.pdf\">Approval, Drilling Work Plan for Groundwater Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 23<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-23-\u2013-April-25-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-23-\u2013-April-25-2017.pdf\">Chromium Extraction Well Evaluation Report and Recommendation for CrEX-2<\/a><\/td><\/tr><tr><td>Attachment 24<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-24-\u2013-July-17-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-24-\u2013-July-17-2017.pdf\">Approval, Chromium Extraction Well Evaluation Report and Recommendation for CrEX-2<\/a><\/td><\/tr><tr><td>Attachment 25<\/td><td><a href=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ESHID-602964\" data-type=\"link\" data-id=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ESHID-602964\">Compendium of Technical Reports Conducted Under the Work Plan for Chromium Plume Center Characterization<\/a><\/td><\/tr><tr><td>Attachment 26<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-26-April-24-2018.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-26-April-24-2018.pdf\">Chromium Plume Control Interim Measure Performance Monitoring Work Plan<\/a><\/td><\/tr><tr><td>Attachment 27<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/38852-1.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/38852-1.pdf\">Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 28<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-28-\u2013-June-6-2018.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-28-\u2013-June-6-2018.pdf\">NMED Response, Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 29<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-29-\u2013-January-3-2019.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-29-\u2013-January-3-2019.pdf\">Draft Comment Resolution, Chromium Plume Control Interim Measure Performance Monitoring Work Plan<\/a><\/td><\/tr><tr><td>Attachment 30<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-30-\u2013-April-1-2019.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-30-\u2013-April-1-2019.pdf\">Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 31<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-31-\u2013-October-30-2018.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-31-\u2013-October-30-2018.pdf\">Drilling Work Plan for Chromium Groundwater Project Regional Aquifer Monitoring Well R-70<\/a><\/td><\/tr><tr><td>Attachment 32<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-32-\u2013-December-16-2019.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-32-\u2013-December-16-2019.pdf\">Assessment Work Plan for the Evaluation of Conditions in the Regional Aquifer Around Well R-70<\/a><\/td><\/tr><tr><td>Attachment 33<\/td><td><a href=\"https:\/\/ext.em-la.doe.gov\/GovFTPFiles\/api\/GetFiles\/GetFile?fileName=EMID-701506.pdf\" data-type=\"link\" data-id=\"https:\/\/ext.em-la.doe.gov\/GovFTPFiles\/api\/GetFiles\/GetFile?fileName=EMID-701506.pdf\">Assessment Report for the Evaluation of Conditions in the Regional Aquifer Around Well R-70<\/a><\/td><\/tr><tr><td>Attachment 34<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-34-\u2013-December-20-2021.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-34-\u2013-December-20-2021.pdf\">Review, Assessment Report for the Evaluation of Conditions in the Regional Aquifer Around Well R-70<\/a><\/td><\/tr><tr><td>Attachment 35<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-35-\u2013-June-30-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-35-\u2013-June-30-2022.pdf\">Annual Progress Report on Chromium Plume Control Interim Measure Performance, July 2021 through March 2022<\/a><\/td><\/tr><tr><td>Attachment 36<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-36-\u2013-September-29-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-36-\u2013-September-29-2022.pdf\">Chromium Interim Measures and Characterization Work Plan<\/a><\/td><\/tr><tr><td>Attachment 37<\/td><td><a href=\"https:\/\/ext.em-la.doe.gov\/GovFTPFiles\/api\/GetFiles\/GetFile?fileName=EMID-702597.pdf\" data-type=\"link\" data-id=\"https:\/\/ext.em-la.doe.gov\/GovFTPFiles\/api\/GetFiles\/GetFile?fileName=EMID-702597.pdf\">Submittal of Initial Five-Year Evaluation of the Interim Measures for Chromium Plume Control with an Assessment of Potential Modifications to Operations<\/a><\/td><\/tr><tr><td>Attachment 38<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-38-March-30-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-38-March-30-2023.pdf\">Request for 45-Day Extension Regarding Notification of Cessation of Injection Activities, Los Alamos National Laboratory Underground Injection Control Wells, Discharge Permit 1835<\/a><\/td><\/tr><tr><td>Attachment 39<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-39-April-3-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-39-April-3-2023.pdf\">Notification of Cessation of Injection Activities as Required per the Corrective Action Plan Response and Further Action Required, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 40<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-40-\u2013-May-31-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-40-\u2013-May-31-2023.pdf\">Notice of Disapproval, Chromium Interim Measures and Characterization Work Plan<\/a><\/td><\/tr><tr><td>Attachment 41<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-41-\u2013-July-31-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-41-\u2013-July-31-2023.pdf\">EM-LA Response to Notice of Disapproval, Chromium Interim Measures and Characterization Work Plan<\/a><\/td><\/tr><tr><td>Attachment 42<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-42-\u2013-September-7-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-42-\u2013-September-7-2023.pdf\">Corrective action under DP-1835 associated with the chromium plume<\/a><\/td><\/tr><tr><td>Attachment 43<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-43-October-26-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-43-October-26-2023.pdf\">Email from DOE to NMED, RE: October 26<sup>th<\/sup> LANL Chromium Groundwater Technical Meeting<\/a><\/td><\/tr><tr><td>Attachment 44<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-44-\u2013-December-5-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-44-\u2013-December-5-2023.pdf\">Response to New Mexico Environment Department September 6, 2023, Letter, \u201cCorrective action under DP-1835 associated with the chromium plume\u201d<\/a><\/td><\/tr><tr><td>Attachment 45<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-45-\u2013-January-3-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-45-\u2013-January-3-2024.pdf\">NMED Response, EM-LA Response to Notice of Disapproval, Chromium Interim Measures and Characterization Work Plan<\/a><\/td><\/tr><tr><td>Attachment 46<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-46-\u2013-February-6-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-46-\u2013-February-6-2024.pdf\">Response to DOE December 5, 2023 Letter, Response to New Mexico Environment Department September 6, 2023, Letter, \u201cCorrective action under DP-1835 associated with the chromium plume\u201d<\/a><\/td><\/tr><tr><td>Attachment 47<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-47-\u2013-April-10-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-47-\u2013-April-10-2024.pdf\">Response to New Mexico Environment Letter of February 6, 2024, Regarding Resumption of Interim Measures Associated with the Chromium Plume<\/a><\/td><\/tr><tr><td>Attachment 48<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-48-\u2013-May-29-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-48-\u2013-May-29-2024.pdf\">Response to DOE April 10, 2024, Letter Response to New Mexico Environment Letter of February 6, 2024, Regarding Resumption of Interim Measures Associated with the Chromium Plume<\/a><\/td><\/tr><tr><td>Attachment 49<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-49-\u2013-June-17-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-49-\u2013-June-17-2024.pdf\">Response to NMED letter RE: \u201dEM-LA Response to Notice of Disapproval Chromium Interim Measures and Characterization Work Plan, dated January 3, 2024.<\/a><\/td><\/tr><tr><td>Attachment 50<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-50-\u2013-December-10-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-50-\u2013-December-10-2024.pdf\">NMED Response, Response to NMED letter RE: \u201dEM-LA Response to Notice of Disapproval Chromium Interim Measures and Characterization Work Plan, dated January 3, 2024<\/a><\/td><\/tr><tr><td>Attachment 51<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-51-December-30-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-51-December-30-2024.pdf\">Independent Technical Review Chromium Interim Measures Remediation System in Mortandad Canyon Los Alamos, New Mexico<\/a><\/td><\/tr><tr><td>Attachment 52<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-52-\u2013-February-7-2025.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-52-\u2013-February-7-2025.pdf\">Response to the New Mexico Department Environment Department Notice of Disapproval Received on December 10, 2024, and Proposed Approach to Incorporating Independent Technical Review Team Report Recommendations into the Chromium Campaign<\/a><\/td><\/tr><tr><td>Attachment 53<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-53-November-18-2025.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-53-November-18-2025.pdf\">Withdrawal of the Temporary Authorization for Partial Operation of Discharge Permit 1835 (DP-1835)<\/a><\/td><\/tr><tr><td>Attachment 54<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-54-\u2013-November-18-2025.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-54-\u2013-November-18-2025.pdf\">DOE Response, Withdrawal of the Temporary Authorization for Partial Operation of Discharge Permit 1835 (DP-1835)<\/a><\/td><\/tr><tr><td>Attachment 55<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-55-\u2013-November-21-2025.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-55-\u2013-November-21-2025.pdf\">DOE Response, Notification of Withdrawal of the Temporary Authorization for Partial Operation of Discharge Permit 1835<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">Los Alamos National Laboratory (LANL) GWQB Hexavalent Chromium Plume &#8211; Ground Water Quality Bureau ACO<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/2026-02-11_WPCEB_26-01-GWQB_ACO_LANL_Chromium_final.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/2026-02-11_WPCEB_26-01-GWQB_ACO_LANL_Chromium_final.pdf\">Administrative Compliance Order WPCED-26-01<\/a><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>ATTACHMENT<\/strong><\/td><td><strong>DOCUMENT NAME AND LINK<\/strong><\/td><\/tr><tr><td>Attachment 1<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-1-\u2013-April-1-2015.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-1-\u2013-April-1-2015.pdf\">Groundwater Discharge Permit Application for the Chromium Plume Control Interim Measure and Plume-Center Characterization<\/a><\/td><\/tr><tr><td>Attachment 2<\/td><td><a href=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ESHID-601048\" data-type=\"link\" data-id=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ESHID-601048\">Drilling Work Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization Injection Wells CrIN-1 through CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 3<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-3-\u2013-October-8-2015.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-3-\u2013-October-8-2015.pdf\">Response &#8211; Request for Additional Information, Class V Injection Control Wells, Discharge Permit Application DP-1835<\/a><\/td><\/tr><tr><td>Attachment 4<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-4-\u2013-November-24-2015.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-4-\u2013-November-24-2015.pdf\">Review Comments, Draft Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/td><\/tr><tr><td>Attachment 5<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-5-\u2013-November-30-2015.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-5-\u2013-November-30-2015.pdf\">Public Comments in Opposition to the draft Discharge Permit (DP) 1835 Class V Underground Injection Control<\/a><\/td><\/tr><tr><td>Attachment 6<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-6-\u2013-March-18-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-6-\u2013-March-18-2016.pdf\">DOE &#8211; Hearing Determination Request, DP-1835, Class V Underground Injection Control, Los Alamos National Laboratory<\/a><\/td><\/tr><tr><td>Attachment 7<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-7-\u2013-March-18-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-7-\u2013-March-18-2016.pdf\">CCW &#8211; Hearing Determination Request, DP-1835, Class V Underground Injection Control, Los Alamos National Laboratory<\/a><\/td><\/tr><tr><td>Attachment 8<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-8-January-22-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-8-January-22-2016.pdf\">Approval with Modifications, Drilling Work Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization Injection Wells CrIN-1 through CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 9<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-9-\u2013-May-12-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-9-\u2013-May-12-2016.pdf\">Additional Information for Discharge Permit Application DP-1835<\/a><\/td><\/tr><tr><td>Attachment 10<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/ESHID-600458.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/ESHID-600458.pdf\">Interim Measures Work Plan for Chromium Plume Control<\/a><\/td><\/tr><tr><td>Attachment 11<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-11-\u2013-May-25-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-11-\u2013-May-25-2016.pdf\">Amendment to Discharge Permit Application DP-1835<\/a><\/td><\/tr><tr><td>Attachment 12<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-12-August-15-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-12-August-15-2016.pdf\">Hearing Officer&#8217;s Report pursuant to 20.6.2.3110 (K)<\/a><\/td><\/tr><tr><td>Attachment 13<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-13-August-19-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-13-August-19-2016.pdf\">Final Decision Pursuant to 20.6.2.3110(L) NMAC<\/a><\/td><\/tr><tr><td>Attachment 14<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-14-August-31-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-14-August-31-2016.pdf\">Discharge Permit Number 1835<\/a><\/td><\/tr><tr><td>Attachment 15<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-15-\u2013-November-17-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-15-\u2013-November-17-2016.pdf\">NMED Reply, Email Request for Confirmation of Compliance with DP-1835 Pre-Discharge Requirements<\/a><\/td><\/tr><tr><td>Attachment 16<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-16-\u2013-December-7-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-16-\u2013-December-7-2016.pdf\">Confirmation of Compliance with Discharge Permit 1835 Pre-Discharge Requirements, Los Alamos National Laboratory Underground Injection Control Wells<\/a><\/td><\/tr><tr><td>Attachment 17<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-17-December-13-2016.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-17-December-13-2016.pdf\">Drilling Work Plan for Groundwater Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 18<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-18-January-4-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-18-January-4-2017.pdf\">Approval, Drilling Work Plan for Groundwater Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 19<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-19-September-1-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-19-September-1-2017.pdf\">LANL, DP-1835, Notification to Temporarily Limit Injection into CrIN-1 and CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 20<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-20-September-22-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-20-September-22-2017.pdf\">Notification of Commencement of Injection at CrIN-6, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/td><\/tr><tr><td>Attachment 21<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-21-September-25-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-21-September-25-2017.pdf\">NMED Response \u2013 Notification of Commencement of Injection at CrIN-6, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/td><\/tr><tr><td>Attachment 22<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-22-October-19-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-22-October-19-2017.pdf\">Path Forward in Response to NMED\u2019s September 1, 2017 Notification to Temporarily Limit Injection into CrIN-1 and CrIN-6, Discharge Permit DP-1835<\/a><\/td><\/tr><tr><td>Attachment 23<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-23-\u2013-November-21-2017.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-23-\u2013-November-21-2017.pdf\">Path Forward in Response to NMED\u2019s September 1, 2017 Notification to Temporarily Limit Injection into CrIN-1 and CrIN-6, Discharge Permit DP-1835<\/a><\/td><\/tr><tr><td>Attachment 24<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/38852-1.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/38852-1.pdf\">Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 25<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-25-June-6-2018.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-25-June-6-2018.pdf\">NMED Response, Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 26<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-26-\u2013-April-1-2019.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-26-\u2013-April-1-2019.pdf\">Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a><\/td><\/tr><tr><td>Attachment 27<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-27-\u2013-December-16-2019.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-27-\u2013-December-16-2019.pdf\">Assessment Work Plan for the Evaluation of Conditions in the Regional Aquifer Around Well R-70<\/a><\/td><\/tr><tr><td>Attachment 28<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-28-\u2013-April-14-2020.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-28-\u2013-April-14-2020.pdf\">Approval, Assessment Work Plan for the Evaluation of Conditions in the Regional Aquifer Around Well R-70<\/a><\/td><\/tr><tr><td>Attachment 29<\/td><td><a href=\"https:\/\/ext.em-la.doe.gov\/GovFTPFiles\/api\/GetFiles\/GetFile?fileName=EMID-701506.pdf\" data-type=\"link\" data-id=\"https:\/\/ext.em-la.doe.gov\/GovFTPFiles\/api\/GetFiles\/GetFile?fileName=EMID-701506.pdf\">Assessment Report for the Evaluation of Conditions in the Regional Aquifer Around Well R-70<\/a><\/td><\/tr><tr><td>Attachment 30<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-30-\u2013-December-20-2021.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-30-\u2013-December-20-2021.pdf\">Review, Assessment Report for the Evaluation of Conditions in the Regional Aquifer Around Well R-70<\/a><\/td><\/tr><tr><td>Attachment 31<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-31-July-9-2021.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-31-July-9-2021.pdf\">DP-1835 Permit Renewal Application and modification<\/a><\/td><\/tr><tr><td>Attachment 32<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-32-\u2013-August-2-2021.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-32-\u2013-August-2-2021.pdf\">Administrative Completeness Determination and Applicant\u2019s Public Notice Requirements, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 33<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-33-January-10-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-33-January-10-2022.pdf\">NMED Request for Additional Information for Los Alamos National Laboratory Underground Injection Control Wells, Discharge Permit 1835<\/a><\/td><\/tr><tr><td>Attachment 34<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-34-February-24-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-34-February-24-2022.pdf\">DOE Response to New Mexico Environment Department Ground Water Quality Bureau Request for Additional Information for Los Alamos National Laboratory Underground Injection Control Wells, Discharge Permit 1835<\/a><\/td><\/tr><tr><td>Attachment 35<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-35-April-28-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-35-April-28-2022.pdf\">Notice of Non-Compliance, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 36<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-36-May-27-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-36-May-27-2022.pdf\">Response to New Mexico Environment Department Ground Water Quality Bureau Notice of Non-Compliance, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 37<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-37-June-6-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-37-June-6-2022.pdf\">Notice of Violation, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 38<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-38-July-5-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-38-July-5-2022.pdf\">Response to Notice of Violation, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 39<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-39-July-6-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-39-July-6-2022.pdf\">Superseding Correspondence Submitted on July 5, 2022: Response to Notice of Violation, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 40<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-40-August-11-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-40-August-11-2022.pdf\">Request for Extension for Fiscal Year 2022 Appendix B Milestone #7, Letter Report Documenting Completion of R-73 and Collection of First Samples due to Force Majeure and Unanticipated Breakage of Lines of Pipe<\/a><\/td><\/tr><tr><td>Attachment 41<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-41-August-4-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-41-August-4-2022.pdf\">Request for Additional Time for the Submittal of a Corrective Action Plan, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 42<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-42-September-30-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-42-September-30-2022.pdf\">Submittal of the Regional Aquifer Monitoring Well R-45 Action Plan<\/a><\/td><\/tr><tr><td>Attachment 43<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-43-December-12-2022.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-43-December-12-2022.pdf\">Corrective Action Plan Response and Further Action Required, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 44<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-44-February-2-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-44-February-2-2023.pdf\">NMED Follow-up on Corrective Action Plan Response and Further Action Required, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 45<\/td><td><a href=\"https:\/\/ext.em-la.doe.gov\/GovFTPFiles\/api\/GetFiles\/GetFile?fileName=EMID-702597.pdf\" data-type=\"link\" data-id=\"https:\/\/ext.em-la.doe.gov\/GovFTPFiles\/api\/GetFiles\/GetFile?fileName=EMID-702597.pdf\">Submittal of Initial Five-Year Evaluation of the Interim Measures for Chromium Plume Control with an Assessment of Potential Modifications to Operations<\/a><\/td><\/tr><tr><td>Attachment 46<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-46-March-30-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-46-March-30-2023.pdf\">Request for 45-Day Extension Regarding Notification of Cessation of Injection Activities, Los Alamos National Laboratory Underground Injection Control Wells, Discharge Permit 1835<\/a><\/td><\/tr><tr><td>Attachment 47<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-47-\u2013-April-3-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-47-\u2013-April-3-2023.pdf\">Notification of Cessation of Injection Activities as Required per the Corrective Action Plan Response and Further Action Required, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a><\/td><\/tr><tr><td>Attachment 48<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-48-\u2013-September-7-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-48-\u2013-September-7-2023.pdf\">Corrective action under DP-1835 associated with the chromium plume<\/a><\/td><\/tr><tr><td>Attachment 49<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-49-\u2013-December-5-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-49-\u2013-December-5-2023.pdf\">Response to New Mexico Environment Department September 6, 2023, Letter, \u201c<em>Corrective action under DP-1835 associated with the chromium plume<\/em>\u201d<\/a><\/td><\/tr><tr><td>Attachment 50<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-50-\u2013-February-6-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-50-\u2013-February-6-2024.pdf\">Response to DOE December 5, 2023 Letter, Response to New Mexico Environment Department September 6, 2023, Letter, \u201c<em>Corrective action under DP-1835 associated with the chromium plume<\/em>\u201d<\/a><\/td><\/tr><tr><td>Attachment 51<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-51-\u2013-April-10-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-51-\u2013-April-10-2024.pdf\">Response to New Mexico Environment Letter of February 6, 2024, Regarding Resumption of Interim Measures Associated with the Chromium Plume<\/a><\/td><\/tr><tr><td>Attachment 52<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-52-\u2013-May-29-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-52-\u2013-May-29-2024.pdf\">Response to DOE April 10, 2024, Letter Response to New Mexico Environment Letter of February 6, 2024, Regarding Resumption of Interim Measures Associated with the Chromium Plume<\/a><\/td><\/tr><tr><td>Attachment 53<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-53-December-30-2024-1.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-53-December-30-2024-1.pdf\">Independent Technical Review Chromium Interim Measures Remediation System in Mortandad Canyon Los Alamos, New Mexico<\/a><\/td><\/tr><tr><td>Attachment 54<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-54-November-18-2025.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-54-November-18-2025.pdf\">Withdrawal of the Temporary Authorization for Partial Operation of Discharge Permit 1835 (DP-1835)<\/a><\/td><\/tr><tr><td>Attachment 55<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-55-\u2013-November-18-2025.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-55-\u2013-November-18-2025.pdf\">DOE Response, Withdrawal of the Temporary Authorization for Partial Operation of Discharge Permit 1835 (DP-1835)<\/a><\/td><\/tr><tr><td>Attachment 56<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-56-\u2013-November-21-2025.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-56-\u2013-November-21-2025.pdf\">DOE Response, Notification of Withdrawal of the Temporary Authorization for Partial Operation of Discharge Permit 1835<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Material Disposal Area C, SWMU 50-009 &#8211; Hazardous Waste Bureau ACO<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/2026-02-11_HWB_26-02_CED_ACO_Material_Disposal_Area_C.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/2026-02-11_HWB_26-02_CED_ACO_Material_Disposal_Area_C.pdf\">Administrative Compliance Order HWB-26-02<\/a><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>ATTACHMENT <\/strong><\/td><td><strong>DOCUMENT NAME AND LINK<\/strong><\/td><\/tr><tr><td>Attachment 1<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-1-Environmental-Surveillance-of-Low-Level-Radioactive-Waste-Management-Areas-at-Los-Alamos-During-1985.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-1-Environmental-Surveillance-of-Low-Level-Radioactive-Waste-Management-Areas-at-Los-Alamos-During-1985.pdf\">Environmental Surveillance of Low-Level Radioactive Waste Management Areas at Los Alamos During 1985<\/a><\/td><\/tr><tr><td>Attachment 2<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-2-Resource-Conservation-and-Recovery-Act-RCRA-Facility-Investigation-RFI-Work-Plan-for-Operable-Unit-OU-1147-May-29-1992.-8672.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-2-Resource-Conservation-and-Recovery-Act-RCRA-Facility-Investigation-RFI-Work-Plan-for-Operable-Unit-OU-1147-May-29-1992.-8672.pdf\">Resource Conservation and Recovery Act (RCRA) Facility Investigation (RFI) Work Plan for Operable Unit (OR) 1147, May 29, 1992. <\/a><\/td><\/tr><tr><td>Attachment 3<\/td><td><a href=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ERID-222829\" data-type=\"link\" data-id=\"https:\/\/srorlgreen.lanl.gov\/object\/tr?what=info:lanl-repo\/eprr\/ERID-222829\">Corrective Measures Evaluation Report for Material Disposal Area C, Solid Waste Management Unit 50-009 at Technical Area 50, September 28, 2012. <\/a><\/td><\/tr><tr><td>Attachment 4<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-4-Corrective-Measures-Evaluation-Report-for-Material-Disposal-Area-C-Solid-Waste-Management-Unit-50-009-at-TA-50-Revision-1-39629.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-4-Corrective-Measures-Evaluation-Report-for-Material-Disposal-Area-C-Solid-Waste-Management-Unit-50-009-at-TA-50-Revision-1-39629.pdf\">Corrective Measures Evaluation Report for Material Disposal Area C, Solid Waste Management Unit 50-009 at Technical Area 50, Revision 1<\/a><\/td><\/tr><tr><td>Attachment 5<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-5-Change-in-Status-of-Material-Disposal-Area-C-Solid-Waste-Management-Unit-50-009-at-TA-50-March-7-2023.-40313.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-5-Change-in-Status-of-Material-Disposal-Area-C-Solid-Waste-Management-Unit-50-009-at-TA-50-March-7-2023.-40313.pdf\">Change in Status of Material Disposal Area C, Solid Waste Management Unit 50-009, at Technical Area 50, March 7, 2023<\/a><\/td><\/tr><tr><td>Attachment 6<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-6-Response-Change-in-Status-of-Material-Disposal-Area-C-Solid-Waste-Management-Unit-50-009-at-TA-50-March-10-2023.-40324.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-6-Response-Change-in-Status-of-Material-Disposal-Area-C-Solid-Waste-Management-Unit-50-009-at-TA-50-March-10-2023.-40324.pdf\">Response, Change in Status of Material Disposal Area C, Solid Waste Management Unit 50-009, at Technical Area 50, March 10, 2023<\/a><\/td><\/tr><tr><td>Attachment 7<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-7-\u2013-Statement-of-Basis-Selection-of-a-Remedy-for-Corrective-Action-at-Material-Disposal-Area-C-SWMU-50-009-at-TA-50-LANL-9.7.2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-7-\u2013-Statement-of-Basis-Selection-of-a-Remedy-for-Corrective-Action-at-Material-Disposal-Area-C-SWMU-50-009-at-TA-50-LANL-9.7.2023.pdf\">Statement of Basis, Selection of a Remedy for Corrective Action at Material Disposal Area C, SWMU 50-009 at Technical Area 50, Los Alamos National Laboratory. September 7, 2023. <\/a><\/td><\/tr><tr><td>Attachment 8<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-8-\u2013-Compliance-Order-on-Consent-U.S.-Department-of-Energy-LANL.-Modified-September-30-2024.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-8-\u2013-Compliance-Order-on-Consent-U.S.-Department-of-Energy-LANL.-Modified-September-30-2024.pdf\">Compliance Order on Consent, U.S. Department of Energy, Los Alamos National Laboratory. Modified September 30, 2024. <\/a><\/td><\/tr><tr><td>Attachment 9<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-9-Deferment-of-Corrective-Action-Activities-for-Solid-Waste-Management-Unit-50-009.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-9-Deferment-of-Corrective-Action-Activities-for-Solid-Waste-Management-Unit-50-009.pdf\">Deferment of Corrective Action Activities for Solid Waste Management Unit 50-009 at Material Disposal Area C Under the 2016 Compliance Order on Consent, As Revised in 2024, June 18, 2025.<\/a><\/td><\/tr><tr><td>Attachment 10<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-10-Response-Deferment-of-Corrective-Action-Activities-for-SWMU-50-009.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-10-Response-Deferment-of-Corrective-Action-Activities-for-SWMU-50-009.pdf\">Response, Deferment of Corrective Action Activities for Solid Waste Management Unit 50-009 at Material Disposal Area C Under the 2016 Compliance Order on Consent, As Revised in 2024, July 2, 2025.<\/a><\/td><\/tr><tr><td>Attachment 11<\/td><td><a href=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-11-\u2013-Initiation-of-Dispute-Resolution-Under-Section-25-of-the-2016-Compliance-Order-on-Consent-Revised-2024.-July-28-2025.pdf\" data-type=\"link\" data-id=\"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-content\/uploads\/sites\/10\/2026\/02\/Attachment-11-\u2013-Initiation-of-Dispute-Resolution-Under-Section-25-of-the-2016-Compliance-Order-on-Consent-Revised-2024.-July-28-2025.pdf\">Initiation of Dispute Resolution Under Section 25 of the 2016 Compliance Order on Consent (Revised 2024). July 28, 2025. <\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>NMED issued administrative compliance orders to LANL on February 11, 2026 to address compliance with various regulatory requirements. The link to the enforcement actions and the list of attachments for each action are available below. Los Alamos National Laboratory (LANL) Hexavalent Chromium Plume &#8211; Hazardous Waste Bureau ACO Administrative Compliance Order HWB-26-03 ATTACHMENT DOCUMENT NAME [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"parent":9,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-899","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages\/899","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/comments?post=899"}],"version-history":[{"count":4,"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages\/899\/revisions"}],"predecessor-version":[{"id":904,"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages\/899\/revisions\/904"}],"up":[{"embeddable":true,"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages\/9"}],"wp:attachment":[{"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/media?parent=899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}