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EIA India Framework



1. Historical Evolution of EIA in India

Environmental Impact Assessment (EIA) in India originated during 1976–77, initially applied as an administrative appraisal mechanism for river valley and hydroelectric projects. During this early phase (1976–1993), environmental scrutiny was undertaken by the Planning Commission and later by the Department of Science and Technology (DST), primarily for projects requiring approval from the Public Investment Board.

The process evolved into a statutory environmental governance instrument under the Environment (Protection) Act, 1986, which empowered the central government to regulate activities affecting environmental quality.

The 1994 EIA Notification

The landmark 1994 EIA Notification, issued by the Ministry of Environment and Forests (MoEF), made Environmental Clearance (EC) mandatory for 30 categories of developmental projects. This marked the formal institutionalization of EIA as a legally binding regulatory requirement. The notification underwent multiple amendments to strengthen procedural safeguards and impact evaluation mechanisms.

The 2006 EIA Notification

The 2006 EIA Notification replaced the 1994 framework and introduced:

  • Decentralization of environmental governance

  • Classification of projects into Category A and Category B

  • A structured multi-stage appraisal process

  • Expansion of public consultation

  • Sector-specific Terms of Reference (ToR)

This notification remains the core regulatory framework (with subsequent amendments).

Draft EIA Notification 2020

The draft proposed:

  • Reduction in public consultation notice period (to 20 days)

  • Provision for post-facto environmental clearance

  • Relaxation in compliance reporting frequency

These proposals generated significant academic and civil society debate regarding environmental accountability.

2. Legal and Institutional Framework

EIA in India is grounded in the Environment (Protection) Act, 1986, functioning as a preventive environmental management tool aimed at integrating environmental considerations into developmental planning.

Regulatory Authorities

  • Ministry of Environment, Forest and Climate Change (MoEFCC)
    Apex regulatory authority granting Environmental Clearance for Category A projects.

  • Expert Appraisal Committee (EAC)
    Technical advisory body evaluating Category A projects.

  • State Environment Impact Assessment Authority (SEIAA)
    Grants clearance for Category B projects.

  • State Expert Appraisal Committee (SEAC)
    Provides technical appraisal for Category B proposals.

  • Central and State Pollution Control Boards (CPCB/SPCBs)
    Conduct public hearings and issue Consent to Establish (CTE) and Consent to Operate (CTO).

  • National Green Tribunal (NGT)
    Judicial body addressing appeals and environmental disputes related to EIA decisions.

3. Project Categorization under EIA 2006

Projects are categorized based on spatial scale, pollution potential, and anticipated environmental impacts:

  • Category A – High-impact projects requiring central-level clearance (MoEFCC).

  • Category B1 – State-level clearance with mandatory EIA report and public consultation.

  • Category B2 – State-level clearance without full EIA study (based on screening).

4. Stages of the EIA Process in India

The EIA process follows a systematic and scientific methodology:

1. Screening

Determines whether a project requires a full EIA study and assigns it to Category A, B1, or B2.

2. Scoping

Preparation of Terms of Reference (ToR) identifying key environmental components such as:

  • Air quality

  • Surface and groundwater

  • Soil characteristics

  • Biodiversity

  • Socio-economic conditions

  • Risk and disaster management

3. Baseline Data Collection

Seasonal environmental monitoring to establish pre-project environmental status.

4. Impact Assessment and Prediction

Application of:

  • Impact prediction models

  • Risk assessment techniques

  • Cost-benefit analysis

  • Alternatives analysis (including "no project" alternative)

5. Public Consultation

Mandatory for Category A and B1 projects, ensuring participatory environmental governance and incorporation of local stakeholder concerns.

6. Appraisal

Technical evaluation by EAC or SEAC assessing:

  • Impact magnitude

  • Mitigation measures

  • Environmental Management Plan (EMP)

  • Compliance feasibility

7. Decision-Making

Grant or rejection of Environmental Clearance (EC) by MoEFCC or SEIAA.

8. Post-Clearance Monitoring

Includes:

  • Compliance reporting (six-monthly)

  • Environmental auditing

  • Site inspections by regional offices

Environmental Clearance validity:

  • 30 years (mining projects)

  • 10 years (other projects, generally)

5. Digital Governance and Contemporary Trends

India has integrated digital platforms such as PARIVESH 2.0 for:

  • Online application submission

  • Real-time tracking of proposals

  • Transparency in environmental decision-making

Emerging Focus Areas (2025 Trends)

  • Climate change integration in impact assessment

  • Cumulative impact assessment (CIA)

  • Strengthened compliance monitoring

  • GIS-based environmental appraisal

  • Greater transparency and data disclosure

6. Conceptual Significance of EIA

EIA functions as:

  • A preventive environmental management tool

  • A mechanism for sustainable development

  • An instrument of precautionary principle

  • A framework for intergenerational equity

  • A model of participatory environmental governance

It aims to balance economic development, ecological sustainability, and social justice.


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