Evaluation Study of Reclamation Success on Former Coal Mine Land of PT. Komunitas Bangun Bersama Batuah Village, Loa Janan District, Kutai Kartanegara Regency

Environmental management of ex-coal mining land needs to be carried out through reclamation activities. Revegetation is an effort to repair and restore damaged vegetation through planting and plant maintenance activities. In this regard, it is necessary to assess the achievement of the reclamation activities that have been carried out as an effort to review the return of ex-coal mining land to its original habitat so that restoration of ex-coal mining land can be effective and efficiently implemented in the field. The purpose of the study was to determine the percentage of plant life and the level of success in reclaiming ex-coal mining land at PT. Komunitas Bangun Bersama. The study was conducted from September to November 2024 on the reclaimed land of PT. Komunitas Bangun Bersama, Pit Arjuna and Kresna, in Batuah Village, Loa Janan District, Kutai Kartanegara Regency, East Kalimantan Province. The data collected consisted of primary data obtained directly from observations, interviews, and observations of plants in the field such as height, stem diameter, plants that are still alive, and plants that have died; and secondary data obtained from company documents, literature/libraries, and relevant journals. The results of the study showed that that percentage of living plants is white albizia (Paraserianthes falcataria) of 96.18 – 97.24%, monkey soap (Enterolobium cyclocarpum) of 97.30%, rain tree (Samanea saman) of 78.52%, cassia siamea of 75%, Mexican lilac (Gliricidia sepium) of 67.86%; and mahogany (Swietenia mahagoni) plants of 29.01%; and revegetation using white albizia, monkey soap and rain tree plants in Kresna Pit and Arjuna Pit showed a good level of reclamation success.