Regulation of underground penetration

　Businesses must not infiltrate water or other liquids pertaining to the work of manufacturing, using, treating, and storing the underground infiltration prohibited substances listed in the following table (Ordinance, Article 29, Paragraph 1).
　In addition, a company that manufactures, uses, treat, and store underground infiltration prohibited substances must have the following structure when installing facilities pertaining to the work (Ordinance Article 29, Paragraph 2).
①The floor surface is an impermeable material such as concrete that can properly prevent underground penetration of prohibited substances from underground penetration, and coated with chemical resistance as necessary depending on the type and property of the underground infiltration prohibited substances handled on the surface. Measures have been taken to prevent the penetration of underground infiltration, such as installing a receiving plate made of a material that can prevent underground penetration under the facility related to the work. (Article 36, item 1 of the Enforcement Regulations)

②Measures have been taken to prevent the outflow of prohibited substances from underground infiltration, such as installing a liquid levee or the like around the facility handling underground infiltration prohibited substances, if necessary according to the amount and work of the underground infiltration prohibited substances. thing. (Article 36, item 2 of the Enforcement Regulations)

※1 Excludes human waste and other sewage, livestock excrement and fertilizers due to daily life.
※2 Wastewater from business establishments where facilities subject to the atmospheric standards stipulated in the Law Concerning Special Measures against Dioxins are installed and wastewater discharged from establishments where facilities subject to the atmospheric standards stipulated in the Act are installed Limited to wastewater.