All papers published in this volume of IOP Conference Series: Earth and Environmental Science have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.• Type of peer review : Single-blind• Describe criteria used by Reviewers when accepting/declining papers. Was there the opportunity to resubmit articles after revisions?∘ The review was done by considering five (5) aspects :1) Relevance with topics2) Novelty and originality3) Clarity4) Systematic5) Analysis techniques and deduction∘ One reviewer gave points on each aspect between 1-4. Based on total points from those four aspects :1) Definitely Accept : 16-202) Accept : 11-153) Possibly Accept : 7-104) Rejected : 5-6∘ There was an opportunity to resubmit articles after revisions.• Conference submission management system:The paper is uploaded via EDAS (https://edas.info/)• Number of submissions received : 70 papers• Number of submissions sent for review : 60 papers• Number of submissions accepted : 48 papers• Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100) : 68.57• Average number of reviews per paper : 2• Total number of reviewers involved : 36• Any additional info on review process (eg Plagiarism check system) :∘ The similarity score was checked by the editors to find the plagiarism using https://www.turnitin.com/.∘ The standard similarity score to be accepted is less than 15%.• Contact person for queries (Full name, affiliation, institutional email address) :Name : Ayodya Pradhipta TenggaraAffiliation : Universitas Gadjah MadaEmail address : ayodya.p.t@ugm.ac.id