Peer review declaration

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 • Conference submission management system : We used Open Journal System by php for the paper submission. • Number of submissions received : 56 manuscripts • Number of submissions sent for review : 32 manuscripts • Number of submissions accepted : 26 manuscripts • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100) : 26/56 X 100 = 46.29 • Average number of reviews per paper : Twice • Total number of reviewers involved : Seven reviewers per round of review process. • Any additional info on review process : Additional two lay-outer were employed in every round of review processes. • Contact person for queries : Name : Abdul Hadi, Ph.D. Affiliation: Central Library, Lambung Mangkurat University. Email : abdhadi@ulm.ac.id