Environmental Impact Assessment (EIA) in India: Process, EIA Notification 2006, Draft 2020 and Key Concerns (UPSC Notes)

Background: what EIA is for

Environmental Impact Assessment is a process for studying the likely effects of a proposed project on the environment and on people before a decision is taken to approve it. The idea is simple: it is cheaper and fairer to prevent damage at the design stage than to repair it later. EIA asks what the project will do to air, water, land, forests, wildlife and communities; what alternatives exist, including a different site or technology; and how the remaining harm can be reduced or offset. The United States made it a legal requirement through the National Environmental Policy Act of 1969, and the Rio Declaration of 1992 (Principle 17) made it a global norm. In India it is the main tool that brings environmental concerns into decisions on mines, dams, highways, ports, industrial estates and power plants.

Legal history

India began environmental appraisal of river valley projects in the late 1970s. The first EIA Notification came in 1994 after the Stockholm and Rio conferences. The 2006 Notification replaced it and decentralised clearances to State Environment Impact Assessment Authorities (SEIAA).

Stages of EIA under the 2006 Notification

1. Screening (for Category B: B1 needs full EIA, B2 does not).
2. Scoping: Terms of Reference set by the Expert Appraisal Committee.
3. Public consultation: public hearing by the State Pollution Control Board, and written responses.
4. Appraisal by the EAC or State EAC, then decision by MoEFCC or SEIAA.

Post-clearance monitoring requires six-monthly compliance reports.

Category A vs B

Concerns

• EIA reports prepared by consultants paid by the project proponent; copy-paste reports.
• Public hearings held in English or far from affected villages.
• Weak monitoring of conditions after clearance.
• No cumulative or basin-level assessment.
• Ex post facto clearances: the Supreme Court in Vanashakti (May 2025) struck down notifications that allowed post-facto approval; a larger bench later recalled that judgment for reconsideration.

Key actors in the process

Draft EIA Notification, 2020

It proposed post-facto clearance, a shorter period for public comments (from 30 to 20 days), more exemptions from public hearing, and annual instead of six-monthly compliance reports. It drew over 17 lakh comments and was not finalised as drafted.

Why public participation matters

The public hearing is meant to give a voice to those who will bear the costs of a project: farmers losing land, fishers losing access to the sea, tribal communities losing forest. Under the 2006 Notification the hearing is held near the site, with notice in local newspapers and the draft EIA summary in the local language. Written comments can also be sent. In practice hearings are often criticised: reports are long and technical, summaries are poorly translated, venues are far from affected villages, and hearings can be tense or stage-managed. Even so, many projects have been modified or rejected after strong local objections, and courts have struck down clearances where the hearing was flawed. This is the part of EIA that turns it from a technical exercise into a democratic one.

Role of NGOs, activists and courts

Environmental groups and local activists influence EIA outcomes in several ways. They read and critique EIA reports, often exposing copied or inaccurate data, as in cases where reports described species or rivers that did not exist at the site. They mobilise communities for public hearings and help them submit evidence. They file appeals before the National Green Tribunal (set up in 2010), which hears challenges to environmental clearances. They also bring issues to the media and to Parliament. Well-known Indian controversies include the Niyamgiri bauxite mining case in Odisha, where the Supreme Court in 2013 asked gram sabhas to decide on religious and community rights, and campaigns around large dams, coastal power plants and mining in the Western Ghats. In Mains, give examples with what was challenged and what changed.

EIA, SEA and cumulative impacts

A single small hydro project may look harmless on its own, but ten on one river can dry up stretches and block fish movement. This is why experts recommend cumulative impact studies and carrying capacity assessments for river basins and ecologically sensitive regions.

Reforms commonly suggested

Several reforms recur in committee reports and expert writing. EIA consultants should be independent of the proponent, for example through a pool funded by fees and allocated by the regulator. Baseline data should be collected over all seasons and made public. Public hearings should be held in accessible places with simple, local-language summaries. Clearance conditions should be monitored with regular reports and site visits, backed by penalties. Strategic and cumulative assessments should precede approvals in fragile regions such as the Himalaya, the Western Ghats and coasts. Finally, exemptions and post-facto approvals should be limited, so that the process remains preventive, which is its whole purpose.

EIA in Prelims: common traps

Remember that EIA in India is not a separate Act passed by Parliament; it is a notification issued under the Environment (Protection) Act, 1986. The first notification came in 1994 and the current one in 2006. B2 projects are exempt from a full EIA report and from public hearing, while B1 projects need both. The State Pollution Control Board conducts the public hearing, but the appraisal is done by the EAC or SEAC. Environmental clearance is different from forest clearance, which is governed by the forest conservation law and needs separate approval when forest land is diverted. Coastal projects may also need clearance under the Coastal Regulation Zone notification.

A simple model answer structure

A strong answer on EIA begins with its purpose: prevention, informed decision-making and public participation. Next, set out the four stages and the A/B categories in a small table. Then examine weaknesses: proponent-paid consultants, poor baseline data, weak hearings, and lax monitoring after clearance. Use two or three real examples to show how activists and courts changed outcomes. End with reforms such as independent consultants, cumulative and strategic assessment, and stronger post-clearance monitoring, tying EIA to sustainable development and the precautionary principle.

Environmental Impact Assessment: UPSC angle

Environmental Impact Assessment UPSC PYQs (Prelims)

Questions UPSC has actually asked, from the official papers. Pick an option to check yourself.

No Prelims question in the Battle IAS bank is directly on this topic yet.

Mains PYQs on this topic

Questions from the official UPSC Mains papers (2023-2026 in the Battle IAS Mains bank), newest first. Each links to a model answer.

1. UPSC Mains 2024 · GS Paper III · Q8 · 10 marks

   What role do environmental NGOs and activists play in influencing Environmental Impact Assessment (EIA) outcomes for major projects in India? Cite four examples with all important details.

   Model answer and approach

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