Ordinance on the conservation of Living Environment (atmospheric)

Last update date April 10, 2024

From October 1, 2021, the regulations concerning the conservation of Yokohama City Living Environment were partially revised.

Regulatory standards for smoke exhaust

Regulatory standards for smoke exhaust
	Regulations for each facility	+ Regulations on particulate matter (*)
・　Sulfur oxides	Enforcement Regulations Appendix 2 (PDF: 77KB)	＋　Enforcement Regulations Appendix 8 (PDF: 117KB)
・　Nitrogen oxides	Table 3 by Enforcement Regulations Table 3 (PDF: 101KB)	＋　Enforcement Regulations Appendix 8 (PDF: 117KB)
・　Hydrocarbons	Enforcement Regulations Appendix 4 (PDF: 104KB)
・　Soot and dust	Enforcement Regulations Appendix 5 (PDF: 410KB)	＋　Enforcement Regulations Appendix 8 (PDF: 117KB)
・　Smoke emission specified substances	Enforcement Regulations Appendix No. 6 (PDF: 81KB)	＋　Enforcement Regulations Appendix 8 (PDF: 117KB) (Hydrogen chloride)
・　Dioxins	Enforcement Regulations Appendix 7 (PDF: 98KB)

※ The regulation standards for particulate matter stipulate the permissible limits for sulfur oxides, nitrogen oxides, soot, and hydrogen chloride as causative substances. If you have a facility that discharges these substances, please comply with the regulation standards for particulate matter in Appendix 8 (PDF: 117KB).

※ There is a guideline based on the ordinance Article 39 (guidelines for reducing the burden on the environment (items to be considered by business establishments) (PDF: 268KB)).

Regulatory standards for dust

Enforcement Regulations Appendix 9 (PDF: 67KB)

Regulatory standards for odor

Small-scale fixed internal combustion engines and gas turbines

Construction work such as demolition of buildings using asbestos (asbestos)

registration form Others

List of registration form (Atmospheric)

Ordinance (outside site) about conservation of Yokohama-shi living environment(Links to the Yokohama City Regulations.)
Ordinance enforcement regulations (outside site) about conservation of Yokohama-shi living environment(Links to the Yokohama City Regulations.)

In order to open PDF files, you may need a separate PDF reader.
If you do not have it, you can download it free of charge from Adobe.
To download Adobe Acrobat Reader DC