{"abstract":"This document provides an overview of EPA's national effort to reduce air toxics, including stationary and mobile source standards, cumulative risk initiatives, assessment approaches, and education and outreach. This national air toxics program includes activities under multiple Clean Air Act (Act) authorities to reduce air toxics emissions from all sources, including major industrial sources, smaller stationary sources, and mobile sources such as cars and trucks. By integrating activities under different parts of the Act, EPA can better address cumulative public health risks and adverse environmental impacts posed by exposures to multiple air toxics in areas where the emissions and risks are most significant. In addition, this document describes a new major component of our national effort, the Integrated Urban Air Toxics Strategy (Strategy) developed under the authority of sections 112(k) and 112(c)(3) of the Act. The Strategy reflects the public comments received on the draft Strategy, which was published on September 14, 1998 (63 FR 49240). The Strategy includes a description of risk reduction goals; a list of 33 hazardous air pollutants (HAPs) judged to pose the greatest potential threat to public health in the largest number of urban areas, including 30 HAPs specifically identified as being emitted from smaller industrial sources known as ``area'' sources; and a list of area source categories which emit a substantial portion of these HAPs, and which are being considered for regulation under section 112(d). Because mobile sources are an important contributor to the urban air toxics problem, the Strategy also describes actions under Title II (including section 202(l)) of the Act to reduce toxics from these sources, including those which address diesel particulate matter (PM). The Strategy by itself doesn't automatically result in regulation or control of emissions. The EPA will perform further analyses of HAP emissions, control methods, and health impacts, as appropriate, for stationary and mobile sources. These analyses will inform any ultimate regulatory requirements that EPA develops under the Strategy.","action":"Notice.","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/1999/07/19/99-17774.html","cfr_references":[],"citation":"64 FR 38706","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":null,"disposition_notes":null,"docket_ids":["FRL-6376-7","Docket No. A-97-44"],"dockets":[],"document_number":"99-17774","effective_on":null,"end_page":38740,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1999/07/19/99-17774/national-air-toxics-program-the-integrated-urban-strategy","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/99-17774?publication_date=1999-07-19","mods_url":"https://www.govinfo.gov/metadata/granule/FR-1999-07-19/99-17774/mods.xml","not_received_for_publication":null,"page_length":35,"page_views":{"count":1410,"last_updated":"2026-09-21 20:15:12 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-1999-07-19/pdf/99-17774.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"1999-07-19","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1999/07/19/99-17774.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-09-21T07:01:02Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":38706,"subtype":null,"title":"National Air Toxics Program: The Integrated Urban Strategy","toc_doc":null,"toc_subject":null,"topics":[],"type":"Notice","volume":64}