{"data":{"id":"us/40-cfr-table-c-3-to-subpart-c-of-part-53","jurisdiction":"us","citation":"40 CFR Table C-3 to Subpart C of Part 53","heading":"Table C-3 to Subpart C of Part 53—Test Specifications for Pb in TSP and Pb in PM 10 Methods","body":"Concentration range equivalent to percentage of NAAQS in µg/m3 30% to 250%\nMinimum number of 24-hr measurements 5\nMaximum reference method analytical bias, Dq ±5%\nMaximum precision, PR or PC ≤15%\nMaximum difference (D) ±20%\nEstimated Method Detection Limit (MDL), µg/m3 5% of NAAQS level.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 53—AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS","Subpart C—Procedures for Determining Comparability Between Candidate Methods and Reference Methods"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"eb5880092c4693824404b6adc7cf9e60f4e54d23496e5ccf2cd780b71131267a","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-c-2-to-subpart-c-of-part-53","next":"us/40-cfr-table-c-4-to-subpart-c-of-part-53"},"notice":"GroundRules: Original legal text. Not legal advice."}