Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 53, Subpt. A, Tbl. A-1 Table A–1 to Subpart A of Part 53—Summary of Applicable Requirements for Reference and Equivalent Methods for Air Monitoring of Criteria Pollutants

Current as of January 02, 2025 | Updated by Findlaw Staff

Pollutant	Reference or equivalent	Manual or automated	Applicable part 50 appendix	Applicable subparts of part 53
				A	B	C	D	E	F
SO₂	Reference	Manual	A-2
		Automated	A-1	✓	✓
	Equivalent	Manual	A-1	✓		✓
		Automated	A-1	✓	✓	✓
CO	Reference	Automated	C	✓	✓
	Equivalent	Manual	C	✓		✓
		Automated	C	✓	✓	✓
O₃	Reference	Automated	D	✓	✓
	Equivalent	Manual	D	✓		✓
		Automated	D	✓	✓	✓
NO₂	Reference	Automated	F	✓	✓
	Equivalent	Manual	F	✓		✓
		Automated	F	✓	✓	✓
Pb	Reference	Manual	G
	Equivalent	Manual	G	✓		✓
		Automated	G	✓		✓
PM₁₀-Pb	Reference	Manual	Q
	Equivalent	Manual	Q	✓		✓
		Automated	Q	✓		✓
PM₁₀	Reference	Manual	J	✓			✓
	Equivalent	Manual	J	✓		✓	✓
		Automated	J	✓		✓	✓
PM_2.5	Reference	Manual	L	✓				✓
	Equivalent Class I	Manual	L	✓		✓		✓
	Equivalent Class II	Manual	L ¹	✓		✓ ²		✓	✓ ¹²
	Equivalent Class III	Automated	L ¹	✓		✓		✓	✓ ¹
PM_10-2.5	Reference	Manual	L, O	✓				✓
	Equivalent Class I	Manual	L, O	✓		✓		✓
	Equivalent Class II	Manual	L, O	✓		✓ ²		✓	✓ ¹²
	Equivalent Class III	Automated	L ¹, O ¹	✓		✓		✓	✓ ¹

^1. Some requirements may apply, based on the nature of each particular candidate method, as determined by the Administrator.

^2. Alternative Class III requirements may be substituted.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 53, Subpt. A, Tbl. A-1 Table A–1 to Subpart A of Part 53—Summary of Applicable Requirements for Reference and Equivalent Methods for Air Monitoring of Criteria Pollutants - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-pt-40-53-subpt-a-tbl-a-1/

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Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 53, Subpt. A, Tbl. A-1 Table A–1 to Subpart A of Part 53—Summary of Applicable Requirements for Reference and Equivalent Methods for Air Monitoring of Criteria Pollutants

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