Chemical Emission Reduction

PRTR-Related Matters

MGC non-consolidated and domestic MGC Group companies assess and submit notifications on released and transferred substances subject to the PRTR scheme under the Act on the Assessment of Releases of Specified Chemical Substances in the Environment and the Promotion of Management Improvement (PRTR Act) while working to reduce the amounts released and transferred.

Substances Subject to Notification under the PRTR Scheme (MGC non-consolidated and domestic MGC Group companies)

Quantities of released and transferred substances for which notice was submitted under the PRTR scheme by MGC non-consolidated and domestic MGC Group companies were aggregated.

* Past data has been reviewed and numerical values have been corrected.

High-emission Substances for Which Notice Was Submitted under the PRTR Scheme (MGC non-consolidated and domestic MGC Group companies)

Among the substances for which notice was submitted under the PRTR scheme, those listed below were emitted by MGC non-consolidated and domestic MGC Group companies in total in amounts of 10 tons or more.

Japan Chemical Industry Association PRTR-targeted Substances (Non-consolidated)

The Japan Chemical Industry Association (JCIA), of which MGC is a member, has specified 328 Class I Designated Chemical Substances stipulated by the PRTR Law, and a JCIA-specified 90 substances plus 1 substance group as voluntary PRTR-targeted substances considered volatile organic compounds (VOCs). The JCIA tabulates the emissions of member companies, and the entire chemical industry is working toward reducing emissions of these PRTR substances.
The amount of said substances emitted by MGC in fiscal 2022 totaled 68 substances and 395 tons, a decrease of around 25% from the 315 tons of emissions in fiscal 2021. The main cause was an increase in atmospheric releases of 1,2,4-trimethylbenzene caused by defective refrigeration equipment at the Kashima Plant.
MGC will continue its efforts to reduce emissions of chemical substances occurring in conjunction with the unplanned shutdown and startup of equipment and similar factors, by implementing measures to reduce problems at manufacturing plants and through preventive measures.

Act on Rational Use and Appropriate Management of Fluorocarbons

At the business sites of MGC non-consolidated and domestic MGC Group companies, which are class I specified product managers under the Act on Rational Use and Appropriate Management of Fluorocarbons, simple and periodic inspections of equipment are conducted and records are retained, the amounts of leaks are calculated in accordance with recovery certificates and filling certificates obtained at the time of equipment maintenance, and appropriate measures are taken when disposing of equipment.

Calculated Fluorocarbon Leak Volume (non-consolidated)

The calculated volume of leaked fluorocarbons at MGC sites is as follows.

• Since fiscal 2020, the amount of fluorocarbons leaked has decreased in conjunction with the updating of refrigeration equipment at the Kashima Plant.
• The amount of fluorocarbons leaked in fiscal 2021 increased due to problems with facilities at the Kashima Plant.