UPSC Notes

Environmental Impact Assessment (EIA) and Clearance

PYQs

8

Articles

1

Momentum

21

Phase IFoundation

Background

Overview

UPSC frequently examines the effectiveness of environmental regulations, the balance between development and conservation, and the challenges in implementing EIA, particularly for large infrastructure projects in fragile ecosystems like the Himalayas.

Environmental Impact Assessment (EIA) is a statutory process in India under the Environment (Protection) Act, 1986, requiring prior environmental clearance for various development projects. It aims to identify, predict, evaluate, and mitigate the environmental, social, and economic impacts of a project before its implementation.

Phase IIStatic core

Facts & tables

Key facts

Legal Basis

Mandated by Environment (Protection) Act, 1986

Process Stages

Involves screening, scoping, public hearing, appraisal, and decision-making

Purpose

Crucial for sustainable development, especially in ecologically sensitive areas

Challenges

Often criticized for implementation gaps and post-clearance monitoring

Reference table

Static syllabus anchors

TypeReference
Conceptual areaEnvironmental Law & Policy
Conceptual areaBiodiversity Conservation & Protected Areas
Conceptual areaBiogeography & Ecosystems

Reference table

Institutions & roles

BodyRole
Ministry of Environment, Forest and Climate Change (MoEFCC)Formulates policy, grants clearances
Expert Appraisal Committees (EACs)Appraises projects
State Environmental Impact Assessment Authorities (SEIAAs)Grants state-level clearances
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Factual recall

Prelims angle: Multi-statement analysis

Quick revision

  • Statutory under Environment (Protection) Act, 1986.
  • Aims to predict and mitigate project impacts.
  • Crucial for projects in sensitive zones (e.g., Himalayas).
  • Challenges: compliance, monitoring, public participation.
  • Debates around recent amendments and potential dilution.

High-confidence PYQs

Topic timeline

Environmental Law & PolicyBiodiversity Conservation & Protected AreasBiogeography & Ecosystems

Buried questions: On the Sikkim tunnel accident

23 Jul 2026 · EIA is a legal tool to assess project impacts and grant environmental clearance, vital for sustainable development but faces implementation challenges in ensuring strict compliance and monitoring.

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Environmental Impact Assessment (EIA) and Clearance

Practice writing on this topic

UPSC has asked 8 linked questions on Environmental Impact Assessment (EIA) and Clearance in Mains. Write an answer to one — and get it evaluated.