{"abstract":"The Environmental Protection Agency (\"EPA\") is soliciting stakeholder input on whether to include a vapor intrusion component to the Hazard Ranking System (\"HRS\"). The HRS is the principal mechanism EPA uses to place sites on the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) National Priorities List (NPL). This potential addition would allow the HRS to directly consider the human exposure to contaminants that enter building structures through the subsurface environment and thus, enabling sites with vapor intrusion contamination to be evaluated for placement on the NPL. EPA is accepting public feedback on specific topics related to the potential HRS revision (see SUPPLEMENTARY INFORMATION section of this Notice), and will consider information gathered during this comment period, as well as input from three public listening sessions before making a decision on whether to issue a proposed rulemaking to add a vapor intrusion component to the HRS. The Agency is requesting comments only regarding this potential addition to the HRS. The Agency is not considering changes to the remainder of the HRS.","action":"Notice of Opportunity for Public Input.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2011/01/31/2011-1934.html","cfr_references":[],"citation":"76 FR 5370","comment_url":null,"comments_close_on":"2011-04-16","correction_of":null,"corrections":[],"dates":"Comments on the topics identified in the SUPPLEMENTARY INFORMATION section of this notice must be submitted (postmarked) on or before April 16, 2011.","disposition_notes":null,"docket_ids":["EPA-HQ-SFUND-2010-10"],"dockets":[],"document_number":"2011-1934","effective_on":null,"end_page":5373,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2011/01/31/2011-1934.xml","html_url":"https://www.federalregister.gov/documents/2011/01/31/2011-1934/potential-addition-of-vapor-intrusion-component-to-the-hazard-ranking-system","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2011-1934?publication_date=2011-01-31","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2011-01-31/2011-1934/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":261,"last_updated":"2026-04-04 16:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2011-01-31/pdf/2011-1934.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2011-01-31","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2011/01/31/2011-1934.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"HRS SsI Addition Final Rule - Response to Public Comment Support Document","document_id":"EPA-HQ-SFUND-2010-1086-0110"},{"title":"HRS SsI Addition Final Rule - Regulatory Impact Analysis","document_id":"EPA-HQ-SFUND-2010-1086-0108"},{"title":"Hazard Ranking System SsI Addition Final Rule - Technical Support Document Appendix A - Conceptual Site Modeling/Sensitivity Analysis","document_id":"EPA-HQ-SFUND-2010-1086-0107"},{"title":"Hazard Ranking System SsI Addition Final Rule - Technical Support Document Appendix B - Site Summaries and Scoring Information (Tier 1)","document_id":"EPA-HQ-SFUND-2010-1086-0106"},{"title":"Hazard Ranking System SsI Addition Final Rule - Technical Support Document (TSD)","document_id":"EPA-HQ-SFUND-2010-1086-0105"},{"title":"EPA response to DoD request for comment period extension","document_id":"EPA-HQ-SFUND-2010-1086-0085"},{"title":"EPA reply to USWAG","document_id":"EPA-HQ-SFUND-2010-1086-0083"},{"title":"Cross Index of HRS Rule Topics","document_id":"EPA-HQ-SFUND-2010-1086-0080"},{"title":"Review of the Superfund Hazard Ranking System – Subcommittee of the Science Advisory Board [SAB-EC-88-008]","document_id":"EPA-HQ-SFUND-2010-1086-0078"},{"title":"HRS SsI Addition Proposed Rule - Regulatory Impact Analysis (RIA)","document_id":"EPA-HQ-SFUND-2010-1086-0076"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2050-AG67/addition-of-subsurface-component-to-the-hazard-ranking-system-hrs-","title":"Addition of Subsurface Component to the Hazard Ranking System (HRS)"},"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-SFUND-2010-1086","supporting_documents_count":33,"docket_id":"EPA-HQ-SFUND-2010-1086","regulation_id_number":"2050-AG67","title":"The Addition of a Subsurface Intrusion Component to the Hazard Ranking System","checked_regulationsdotgov_at":"2011-02-20T21:19:12Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":5370,"subtype":null,"title":"Potential Addition of Vapor Intrusion Component to the Hazard Ranking System","toc_doc":"Potential Addition of Vapor Intrusion Component to the Hazard Ranking System","toc_subject":null,"topics":[],"type":"Notice","volume":76}