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: Double-blind • Conference submission management system: EasyChair • Number of submissions received: 58 • Number of submissions sent for review: 57 • Number of submissions accepted: 42 • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100): 72.41% • Average number of reviews per paper: 2 • Total number of reviewers involved: 42 • Any additional info on review process: There was a two-round reviewing process. The first round is the editorial review for quality check and topic fitness, and the second round is peer review. Two experts of the related field provided objective assessment and feedback to the submitted article. The topic editors reassured the author(s) adequately addressed the reviewers’ comments and suggestions. • Contact person for queries: Dr. Liliana Horal , liliana.goral@gmail.com Ivano-Frankivsk National Technical University of Oil and Gas, 15, Karpatska St., 76019, Ivano-Frankivsk, Ukraine