Phytoremediation is the environmental projects run by PT. Abadi Bersama Cahaya Indonesia. In 2020, the project encountered a performance gap between plan and actual. It was 169% above plan, where maximum gap found in previous year 45%. It caused the project to react with the project change. Furthermore, a potential risk was found where project would be executed by different organization in 2021. The evaluation is conducted to define factors of project management process done to achieve project objective in 2020 and to define recommendation of improvement solutions to sustain project success in the next project year.

This research used qualitative research focusing on planning and executing phase to define affected factors in project success from high-impacted departments; project, construction and facility operation team. There are 3 factors that mostly affect to the successful Phytoremediation project, which are project alignment, performing risk assessment and mitigation, and good schedule and resource plan. Meanwhile, there are 3 recommended solutions to attain successful project objective in the next project year, which are improve communication techniques and meeting frequency from leaders to team members, develop risk assessment matrix at all potential sites, and obtain 2 dedicated and 1 shared contractors to handle E.P. project.

Keywords: Phytoremediation, Project Management, Project Success