{"database": "openregs", "table": "federal_register", "rows": [["2023-24495", "Ambient Air Monitoring Reference and Equivalent Methods; Designation of Two New Equivalent Methods", "Notice", "Notice is hereby given that the Environmental Protection Agency (EPA) has designated one new equivalent method for measuring concentrations of Lead (pb), and one new equivalent method for measuring concentrations of Particulate Matter (PM<INF>10</INF>) in ambient air.", "2023-11-06", 2023, 11, "https://www.federalregister.gov/documents/2023/11/06/2023-24495/ambient-air-monitoring-reference-and-equivalent-methods-designation-of-two-new-equivalent-methods", "https://www.govinfo.gov/content/pkg/FR-2023-11-06/pdf/2023-24495.pdf", "Environmental Protection Agency", "145", "Notice is hereby given that the Environmental Protection Agency (EPA) has designated one new equivalent method for measuring concentrations of Lead (pb), and one new equivalent method for measuring concentrations of Particulate Matter (PM<INF>10</INF>)...", null]], "columns": ["document_number", "title", "type", "abstract", "publication_date", "pub_year", "pub_month", "html_url", "pdf_url", "agency_names", "agency_ids", "excerpts", "regulation_id_numbers"], "primary_keys": ["document_number"], "primary_key_values": ["2023-24495"], "units": {}, "query_ms": 12.542336015030742, "source": "Federal Register API & Regulations.gov API", "source_url": "https://www.federalregister.gov/developers/api/v1", "license": "Public Domain (U.S. Government data)", "license_url": "https://www.regulations.gov/faq"}