Environmental Impact Assessment (EIA) represents a critical cornerstone of India’s environmental governance framework, serving as both a legal mandate and a strategic tool for sustainable development. Governed by the Environment (Protection) Act, 1986 and operationalized through the EIA Notification of 2006 with subsequent amendments through 2025, this process requires project proponents to comprehensively evaluate the ecological, social, and economic impacts of their proposed projects before implementation. EIA is not merely a procedural formality but a systematic scientific evaluation that helps identify potential environmental risks, enables early mitigation planning, and ensures that development proceeds in harmony with environmental conservation. Every year, thousands of projects across sectors including infrastructure, mining, power generation, industrial manufacturing, and real estate undergo this rigorous assessment process to secure the mandatory Environmental Clearance without which no such project can legally proceed in India.
The EIA process in India follows a well-defined four-stage procedure designed to ensure thorough scrutiny while maintaining reasonable timelines. The first stage is screening, where the project is evaluated to determine whether a full EIA study is required based on its category classification. Projects are divided into Category A and Category B, with Category A projects being large-scale ventures requiring clearance from the Ministry of Environment, Forest and Climate Change (MoEFCC) at the central level, while Category B projects are assessed at the state level by the State Environment Impact Assessment Authority (SEIAA). Category B projects are further sub-categorized as B1 (requiring EIA report) and B2 (exempt from detailed EIA), determined by the State Level Expert Appraisal Committee (SEAC) based on the project’s nature, location, and potential environmental sensitivity. The second stage involves scoping, where Terms of Reference (ToR) are issued by the Expert Appraisal Committee (EAC) for Category A projects or SEAC for Category B projects, outlining the specific environmental parameters to be studied. These ToR must be conveyed within sixty days of application submission through the PARIVESH portal, and if not issued within this timeframe, the applicant’s suggested ToR becomes final. The third stage encompasses the preparation of a detailed EIA report by NABET or Quality Council of India accredited consultants, followed by public consultation where stakeholders living near the project site are informed and consulted through public hearings conducted by the State Pollution Control Board. The fourth and final stage involves appraisal of the EIA report along with public hearing proceedings by the EAC or SEAC, culminating in the grant or refusal of Environmental Clearance with specific and standard conditions that must be adhered to throughout the project life.
Recent amendments to the EIA framework have introduced significant procedural and substantive changes aimed at enhancing transparency, reducing timelines, and integrating advanced technology into the clearance process. The expanded PARIVESH 2.0 portal, launched as part of the Digital India initiative, now serves as a comprehensive single-window system integrating not just Environmental Clearance but also Forest Clearance, Wildlife Clearance, and Coastal Regulation Zone clearances.
Notably, notifications issued in November 2024 under the Air Act and Water Act have exempted projects obtaining Environmental Clearance from the separate requirement of Consent to Establish from State Pollution Control Boards, thereby reducing procedural duplication and accelerating the overall approval timeline. The amendments also mandate digital submission of all documents, require disclosure of draft and final EIA reports on public platforms for transparency, and emphasize climate resilience considerations in project design and assessment.
