- Participation in investigative committee meetings* (Ministry of Environment and specialists)
- Examination committee on the introduction of Risk evaluation method based on PRTR data (Ministry of Environment, Japan, -2012) - Satoshi Koyama
- Examination committee on a methodology to estimate emissions from sources not included in PRTR reporting requirements (businesses handling less than 1 ton / year of target chemicals, etc.) (Ministry of Economy, Trade and Commerce, Japan, -2012) - Satoshi Koyama
- Examination committee on greenhouse gases emissions estimation: Non-methane volatile organic compounds task force (Ministry of Environment, Japan) - Kei Sasahara (2012-2014) / Takumi Saotome (2016)
- Examination committee on greenhouse gases emissions estimation: Subcommittee of Non-methane volatile organic compounds (Ministry of Environment, Japan, 2017) - Takumi Saotome
- Examination committee on technological aspects for the establishment of the Minamata Mercury Convention (Ministry of Environment, Japan, 2011) - Satoshi Koyama
- Examination committee on the national inventory of air pollution by mercury (Ministry of Environment, Japan, 2012-2013) - Satoshi Koyama
- Investigation committee on the emissions estimation methods for chemicals related to the Chemical Substances Control Law (CSCL) (National Institute of Technology and Evaluation, 2014, 2016) - Satoshi Koyama
- Investigation committee on the emissions estimation methods for chemicals related to the Chemical Substances Control Law (CSCL) (Ministry of Environment, Japan, 2015) - Satoshi Koyama
- Investigation committee on the emissions estimation methods for chemicals related to the Chemical Substances Control Law (CSCL) (Subcommittee on the emissions estimation methods at disposal stages) (Ministry of Environment, Japan, 2016) - Satoshi Koyama
* Basically, these meetings consist of a panel of specialists that discuss and analyze a specific environmental question/issue and propose mechanisms for policy reform and improvement.