Overview The Tamil Nadu Forest department has denied permission to NTPC Tamilnadu Energy Company Limited (NTECL) to conduct tests at the proposed Upper Bhavani Pumped Storage Hydroelectric project site. This project is located between the ecologically sensitive habitats of Mukurthi National Park (MNP) and Avalanche Reserve Forest , posing potential environmental risks. The denial represents a significant setback for the controversial project. Key Developments Initial Permissions: NTECL initially received permissions for surveys and drilling at the project site. Drifting Tests Denied: The Forest department denied permission for “drifting tests” (geotechnical investigations) due to their potential ecological impact. FCA Clearance: Officials stated that Forest Conservation Act (FCA) clearance is required before drifting tests can be approved. DPR Preparation: The survey, drilling, and drifting tests are part of NTECL’s preparation for a Detailed Project Report (DPR). Forest Land Diversion Application: Despite the Forest department's reluctance, NTECL has applied for the diversion of 56 hectares of forest land through the E-PARIVESH portal to the Union Ministry of Environment and Forests. Project Scrutiny Committee: The application will now be reviewed by the State’s Project Scrutiny Committee. Ecological and Social Concerns Conservationists have expressed concerns that the project would place significant pressure on the ecologically fragile area. This region is home to several key species, including the endangered Nilgiri tahr . The hydroelectric project also potentially affects land sacred to indigenous communities, such as the Devar Betta Hill . Impact on Indigenous Communities Tarun Chhabra , an expert on the indigenous Toda community, noted that the seasonal Toda hamlet Kolimund (Kwehh(r)shy) , recently reoccupied after a hiatus of almost two decades, is located close to the upper storage area. He cautioned that reservoirs have already destroyed immense biodiversity, and underground blasting could destabilize hillsides during extreme rainfall. UPSC Relevance This news is relevant to GS3 (Environment, Infrastructure) and GS2 (Government Policies) . It highlights the challenges of balancing development with environmental conservation and the protection of indigenous communities' rights. The case study provides insights into environmental impact assessments, regulatory processes, and stakeholder conflicts. Important Facts for Prelims Mukurthi National Park: Located in the Nilgiris, Tamil Nadu. Nilgiri Tahr: Endangered species found in the Nilgiri Hills. E-PARIVESH: Online portal for environmental clearances. Forest Conservation Act (FCA): Legislation governing forest land diversion.