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There are two ways to set the threshold for reporting business operators. One is to set based on capacity of facility (varies by type of business), and the other is to set based on size of business (i.e., the number of regular employees).
Furthermore, there are two types of countries regarding the reporting threshold based on annual amount handled. The countries which set the threshold based on annual amount handled for the PRTR substances are Japan, the United States, Canada, Australia, and Korea. The European Union countries do not set this kind of threshold. |

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*Annual amount handled = Annual amount manufactured + Annual amount used** (Definition in Japan) |
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**Annual amount used includes the amount of Class I Designated Chemical Substances included in products. |
Compared among the countries which set the threshold based on annual amount handled, there are two types of countries. The countries like Japan and Korea set exceptional lower threshold for certain specific substances. In contrast, the countries like Canada and Australia classifies the PRTR substances into groups first, then set the threshold based on annual amount handled respectively. As a whole, most countries set the threshold for annual amount handled to 10t or more (excluding the amounts handled for Specific Designated Chemical Substances). Meanwhile, Japan's threshold for annual amount handled is set to 1t or more, which stands at relatively lower level (i.e., widens the range of reporting business operators). |