Before the First Brick: EIA and PARIVESH

Environmental Impact Assessment (EIA) is a planning tool that predicts, evaluates, and seeks to mitigate the environmental consequences of a proposed project before that project is approved. In India it is the principal gatekeeper between development and environmental protection: no major mine, dam, highway, or factory can legally begin without passing through it. For UPSC, EIA is a recurring GS-3 theme because it sits exactly where growth collides with ecology, and where procedure decides outcomes.

What EIA is, and what it is not

EIA is a systematic process used to predict, evaluate, and mitigate the potential environmental, social, and economic impacts of a proposed project before its implementation. Its purpose is to integrate environmental considerations into decision-making so that development is sustainable rather than merely fast. Equally important is what an EIA is not: it does not by itself approve or reject a project. It produces the evidence and the safeguards on which the competent authority bases its decision to grant, modify, or refuse Environmental Clearance (EC).

The objectives of EIA explain why UPSC treats it as a governance instrument rather than a technical formality. It promotes sustainable project design by building environmental safeguards into planning; it ensures efficient resource utilisation during implementation; it screens out, at an early stage, projects likely to cause significant harm; it gives decision-makers comprehensive environmental data for transparent approvals; and it protects public health and safety by identifying hazards before construction begins.

The process is guided by a set of principles that are frequently examined. Participation means affected communities must have a real voice; transparency requires public access to information and decision criteria; accountability obliges decision-makers to justify their choices; credibility demands professional, impartial assessment with independent verification; and integration insists that social, economic, and environmental aspects be addressed together rather than in silos.

The legal spine: the EIA Notification, 2006

India introduced EIA in 1978 for river valley projects. It became statutory through the first EIA Notification in 1994, issued under the Environment (Protection) Act, 1986, and was consolidated into the EIA Notification, 2006, which remains the governing framework. The 2006 Notification created a decentralised structure: Category A projects are appraised centrally by the Ministry of Environment, Forest and Climate Change through the Expert Appraisal Committee (EAC), while Category B projects are appraised by the State Environment Impact Assessment Authority (SEIAA) advised by the State Expert Appraisal Committee (SEAC).

The Notification lists the project types that need clearance: mining, petroleum refineries, and petrochemical complexes above thresholds; thermal power plants above 25 MW and all nuclear projects; chemical, fertilizer, pesticide, cement, paper, and textile industries above thresholds; airports, national highways, river valley projects, ports, and coastal developments; and industrial estates, SEZs, and townships above defined area thresholds. A parallel list of exemptions covers defence and national-security projects, certain public infrastructure, linear projects meeting specified criteria, notified industrial estates, and pure research without production. In January 2025, industrial sheds, schools, and educational hostels up to 1,50,000 sq m were also exempted from EC, but the Supreme Court struck down that exemption in August 2025.

Seven steps from proposal to clearance

Every project that needs clearance walks the same seven steps. Learn them in order, because mains answers on EIA almost always expect the sequence.

Two steps deserve special attention. Scoping is where the appraisal committee decides what the study must cover, so a weak Terms of Reference produces a weak EIA no matter how good the consultant is. Public consultation is the only point where affected communities formally enter the process, which is why every dilution of the hearing, from shorter notice periods to wider exemptions, becomes politically and legally contested.

PARIVESH: the single-window portal

PARIVESH is a centralised, web-based platform launched in August 2018 to streamline four kinds of green clearance: Environment Clearance (EC), Forest Clearance (FC), Wildlife (WL) clearance, and Coastal Regulation Zone (CRZ) clearance. Its upgraded version, PARIVESH 2.0, was fully operationalised in 2024 and now automates the entire clearance lifecycle, from the application and Terms of Reference through public consultation and appraisal to the final decision.

The portal's key features are end-to-end digitisation, which replaces the old multi-window paper trail; GIS and Decision Support System integration, which automatically flags overlaps with forests, wildlife zones, and eco-sensitive areas and reduces manual error; real-time tracking and transparency, which lets applicants follow their proposal online with automated alerts; and, under the 2026 reform, auto-escalation, which forwards proposals stalled at the state level to the standing authority so that lapsed committees cannot freeze decisions indefinitely.

The impact is measurable: the average time for environmental clearance fell from 120 days to 57 days in 2025-26, well within the stipulated 105-day timeline. For industry this is a genuine ease-of-doing-business gain, and for regulators the digital trail improves accountability. But three concerns persist. First, speed versus scrutiny: faster clearances must not dilute appraisal quality, genuine consultation, or cumulative-impact assessment. Second, the digital divide: online-only processes disadvantage remote and tribal communities with limited connectivity. Third, data quality: automation is only as reliable as the baseline data fed into it, so weak inputs produce poor decisions faster.

The reform churn: 2020, 2026, and the exemption debate

The draft EIA Notification, 2020 proposed the most sweeping changes in a generation: cutting the public-hearing notice period from 30 to 20 days, widening exemptions for B1 and B2 and so-called strategic projects, allowing post-facto clearance for projects built without prior approval, and replacing six-monthly compliance reports with annual ones. It drew over 17 lakh public comments, and the Delhi High Court ordered it to be translated into regional languages on 30 June 2020. As of 2026 it remains stalled and unfinalised. One of its most controversial ideas, post-facto clearance, was separately struck down by the Supreme Court in Alembic Pharmaceuticals v. Rohit Prajapati (2020), which held ex post facto clearances 'unsustainable in law' and alien to environmental jurisprudence. The battle did not end there: in May 2025 the Court in Vanashakti v. Union of India struck down the March 2017 notification and the July 2021 office memorandum, declaring post-facto clearances impermissible 'in any form or manner', only for a 2:1 majority led by CJI B.R. Gavai to recall that judgment in review in November 2025 (Justice Ujjal Bhuyan dissenting), reopening the regularisation question for exceptional cases.

In a significant 2026 reform, the Environment Ministry on 13 July 2026 notified the Environment Impact Assessment (Establishment of State Environment Impact Assessment Authorities and Committees) Rules, 2026 (S.O. 3862(E) and 3863(E)), giving final shape to proposals first issued as a draft on 5 March 2026. The Rules create a Standing Authority on EIA (SAEIA) and a Standing Committee on Environment Impact Appraisal (SCEIA) to assume the functions of a non-functional SEIAA or SEAC, with delayed proposals automatically routed to them through PARIVESH. The stated logic is administrative continuity: the clearance desk should never be vacant because a state committee's tenure expired. Critics counter that the standing bodies are staffed largely ex officio, without the domain-expertise requirements that Appendix VI of the 2006 Notification prescribes for the EAC and SEAC.

Around the same time, three more developments matter. The Jan Vishwas (Amendment of Provisions) Act, 2023, effective April 2024, converted first-offence violations of the EP Act, 1986 into administrative penalties of Rs. 10,000 to Rs. 15 lakh instead of criminal prosecution, reserving jail only for non-payment beyond 90 days. The Supreme Court struck down the 2020 and 2023 exemptions for ordinary-earth excavation in linear projects in Noble M. Paikada v. Union of India (21 March 2024); a clarificatory order of 15 May 2024 protected only projects whose work orders predated 21 March 2024. In a further rollback, the Court in August 2025 struck down clause 8 of the Environment Ministry's 29 January 2025 notification (challenged through a PIL by Vanashakti), which had exempted industrial sheds, schools, colleges, and hostels up to 1,50,000 sq m from prior environmental clearance; the Court held that projects above 20,000 sq m cannot escape the EIA Notification, 2006. And the National Green Tribunal has cancelled or suspended clearances where cumulative assessment was found inadequate, signalling that post-clearance compliance matters as much as the pre-clearance process.

When the process fails: the NGO record

The 2024 GS-3 paper asked what role environmental NGOs and activists play in influencing EIA outcomes, and the answer is written in four landmark interventions. The Narmada Bachao Andolan, led by Medha Patkar, challenged the inadequate displacement and ecological assessment of the Sardar Sarovar Dam, forcing reassessments and improved rehabilitation. Kalpavriksh exposed forest-clearance and consultation deficiencies in the POSCO steel project in Odisha, contributing to the 2010 revocation of its clearance and the project's eventual withdrawal. The Goa Foundation took iron-ore mining to the Supreme Court, winning a temporary mining ban and orders for fresh EIAs. Greenpeace India used independent scientific data to expose EIA deficiencies at Mundra Port and SEZ, prompting tighter controls. Together they show that where official appraisal is weak, litigation and independent science become the real regulators.

The systemic challenges behind these failures are well documented: weak post-clearance monitoring, with self-reported compliance rarely verified; poor report quality, with incomplete baseline data and generic Environmental Management Plans; tokenistic public participation, especially in remote and tribal areas; ignored cumulative impacts, because the project-by-project approach misses landscape-level effects; a conflict of interest built into proponent-funded EIAs; and dilution through exemptions, as a growing list of exempted categories shrinks the universe of projects under scrutiny.

The social twin: Social Impact Assessment

Social Impact Assessment (SIA) is a systematic process to identify, analyse, and manage the social consequences, both positive and negative, of a proposed development project on affected communities. It examines livelihoods, displacement, land use, cultural heritage, common resources, and vulnerable groups. The division of labour is simple: EIA assesses ecological impacts; SIA assesses the human and social dimension, and the two are complementary tools for sustainable development.

The legal anchor is the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013 (the LARR Act), which makes SIA mandatory for land acquisition, conducted in consultation with local bodies and gram sabhas. An independent multidisciplinary Expert Group appraises the SIA report and can recommend abandoning a project if social costs outweigh benefits. The Act requires the consent of 70% of affected families for PPP projects and 80% for private projects. In scheduled and forest areas, the Panchayats (Extension to Scheduled Areas) Act, 1996 and the Forest Rights Act, 2006 empower gram sabhas to give free, prior, and informed consent to land diversion.

SIA faces the same pathologies as EIA: assessments treated as a procedural formality, dilution through state amendments and urgency clauses, weak enforcement of Social Impact Management Plans, limited independence from project proponents, and the frequent exclusion of marginalised groups, especially women and the landless, from genuine consultation.

Beyond one project: Strategic Environmental Assessment

Strategic Environmental Assessment (SEA) is the assessment of environmental effects at the level of a policy, plan or programme, before individual projects under it are proposed. Where a project EIA asks whether one dam, mine or highway should proceed and how, SEA asks the earlier question: what pattern of dams, mines or highways should a basin, region or sector have at all. It matters because many of the failures blamed on project EIA, ignored cumulative impacts, no real alternatives and conflicts discovered too late, are locked in before any single project file is opened.

India does not yet have a standalone SEA statute, so SEA enters through reform proposals for sector-wide and regional assessments, river-basin studies and carrying-capacity exercises rather than through one mandatory clearance. That gap is itself an exam point: strengthening EIA may require moving some decisions upstream, so that a project hearing is not forced to relitigate an entire regional development choice. Used well, SEA also improves project EIA, because terms of reference can draw on basin-level baseline data instead of starting from zero for every file.

Environmental Supplemental Plan is an environmentally beneficial project or activity, not otherwise required by law, that an alleged violator agrees to undertake as part of settling an environmental clearance process. It is a restorative idea rather than a clearance condition: the violator funds or performs ecological benefit beyond routine compliance. It matters because it separates two questions that post-facto debates often mix, namely punishment for starting without clearance and additional ecological repair for harm already done.

A comparative lesson runs through the reform debate. In several developed systems, public and expert involvement begins at screening and scoping, reports are written for local readers, and social and health effects are assessed together with ecology. India's recurring weaknesses sit at exactly those points: late consultation, consultant-driven reports and thin multidisciplinary teams. The direction of travel is therefore not only faster clearance through PARIVESH, but earlier, better and more locally legible assessment.

Way forward

• Independent assessment: have EIAs conducted or audited by an autonomous body that is not funded by the project proponent.

• Technology-enabled monitoring: enforce post-clearance compliance digitally and make violation reporting public.

• Landscape-level EIA: move from project-by-project appraisal to cumulative, airshed and landscape-level assessment integrated with climate risk.

• Genuine public participation: restore meaningful consultation with regional-language documents and train panchayats to use EIA as a participatory tool.

• Empower the NGT: add judicial members and dedicated environmental benches for faster, expert adjudication.

• Balance speed with scrutiny: use reforms like SAEIA and SCEIA to end genuine delays without diluting environmental safeguards.

Key Terms

• Key takeaways: Key takeaways is a quick-revision summary box placed at the end of each article, listing the most exam-relevant points in a short numbered list. It distils definitions, dates, figures, provisions and examples into a form suited for last-minute revision before Prelims and Mains. Together with the article's practice questions, it turns every topic into a self-contained study unit.
• Environment (Protection) Act, 1986: The Environment (Protection) Act, 1986 is the umbrella statute for environmental governance in India, passed after the 1984 Bhopal gas tragedy exposed gaps in pollution law. It gives the Centre sweeping powers: laying down standards for air, water and soil quality, regulating the handling of hazardous substances, restricting areas where industries may operate, and delegating enforcement to agencies such as the Central and State Pollution Control Boards. It provides for penalties, including imprisonment, for violations, and is the parent Act for the EIA process and most waste-management rules. Example: Directions closing a polluting factory or restricting construction in a fragile coastal zone are typically issued under this Act.
• EIA Notification, 2006: The EIA Notification, 2006 (S.O. 1533(E), issued under the Environment (Protection) Act, 1986) makes prior environmental clearance mandatory for listed development projects such as mining, thermal power, river-valley projects, ports, airports and large construction. It decentralised the process by creating Category A projects (appraised at the Centre by Expert Appraisal Committees, clearance by the Environment Ministry) and Category B projects (appraised by State Expert Appraisal Committees, clearance by State authorities, with B1 needing a full EIA and B2 exempted). The assessment cycle runs through screening, scoping, public consultation and appraisal. Example: A new thermal power plant, a Category A project, must complete an EIA and obtain clearance before construction begins.
• Category A: Category A covers projects of national significance or with the largest environmental footprint under the EIA Notification, 2006. Such projects are appraised centrally by the Expert Appraisal Committee and require environmental clearance from the Union Ministry of Environment, Forest and Climate Change. They must complete a full EIA study and public consultation before clearance can be granted. Example: Large mining leases, major irrigation projects and thermal power plants of 500 MW or more fall under Category A.
• Expert Appraisal Committee: An Expert Appraisal Committee is a body constituted under the EIA Notification, 2006 to appraise projects requiring central-level (Category A) environmental clearance. It examines EIA reports, public hearing outcomes and Terms of Reference compliance, and recommends grant or rejection of environmental clearance to the Ministry of Environment, Forest and Climate Change. Separate sectoral EACs exist for industries, mining, infrastructure and other project types. Example: The EAC on coal mining projects appraises the EIA reports of new opencast mines before clearance is decided.
• Category B: Category B covers projects with comparatively smaller environmental impacts, appraised at the state level by the State Expert Appraisal Committee and cleared by the State Environment Impact Assessment Authority (SEIAA) under the EIA Notification, 2006. Category B is split into B1, which requires a full EIA report and public hearing, and B2, which is exempt from both. Many building, township and small industrial projects fall in this category. Example: A township or area development project covering 50 to 150 hectares is typically appraised as Category B1.
• SEIAA: The State Environment Impact Assessment Authority is the state-level body that grants or refuses prior environmental clearance to Category B projects under the EIA Notification, 2006, acting on the advice of the SEAC. Category A projects are appraised centrally by the EAC and cleared by the MoEFCC instead. B1 projects need a full EIA and public hearing, while B2 projects are exempt from both. Example: Category B building and mining projects receiving clearance from the SEIAA rather than the central ministry.
• SEAC: The State Expert Appraisal Committee is the expert body that advises the SEIAA on the environmental appraisal of Category B projects under the EIA Notification, 2006. It scrutinises project proposals and their impact assessments, and recommends whether environmental clearance should be granted or refused. SEACs are constituted by the central government for each state and union territory. Example: A Category B mining project's EIA report being appraised by the SEAC before the SEIAA decides on clearance.
• Environmental Management Plan: An Environmental Management Plan is the section of an EIA report that prescribes concrete mitigation measures, monitoring schedules, institutional responsibilities and budgets for managing a project's environmental impacts. It translates the predicted impacts into actions the project proponent must carry out, such as dust control, effluent treatment, afforestation and compliance reporting. Clearance conditions are binding, and violations can lead to penalties. Example: A highway project's Environmental Management Plan may mandate noise barriers near schools and quarterly groundwater monitoring.
• PARIVESH: Pro-Active and Responsive facilitation by Interactive and Virtuous Environmental Single-window Hub, the Environment Ministry's web-based single-window system launched in 2018 for processing environmental, forest, wildlife and coastal regulation zone clearances. It digitises the entire environmental impact assessment and clearance workflow, from terms of reference to appraisal and compliance monitoring, making timelines transparent and trackable. It was designed to cut delays while keeping the clearance process accountable. Example: A mining or highway project applies for environmental clearance through PARIVESH, which tracks its proposal through appraisal committees and public hearing stages online.
• PARIVESH 2.0: The upgraded version of the PARIVESH portal that integrates environmental clearances with GIS-based decision support, allowing a project's location to be checked against eco-sensitive zones, forests and protected areas before proposals are formally filed. It aims to shorten clearance timelines further and strengthen compliance through digital monitoring and data analytics. The GIS layer is the defining addition over the original portal. Example: Under PARIVESH 2.0, a project proponent can screen a site's proximity to protected areas on a GIS map at the application stage itself, avoiding doomed proposals.
• SAEIA: SAEIA stands for the Standing Authority on Environment Impact Assessment, a new body created under India's EIA framework in 2026. Proposed in a March 2026 draft amendment and notified in July 2026, it takes over the functions of the State Environment Impact Assessment Authority (SEIAA) whenever the state authority lapses because its tenure expired or reconstitution was delayed. Unlike SEIAA, its members are ex-officio government officials rather than domain experts, which has drawn criticism. Example: If a state's SEIAA becomes non-functional for over a month, SAEIA steps in so that Category B project clearances do not stall.
• SCEIA: SCEIA stands for the Standing Committee on Environment Impact Appraisal, the expert-support body created alongside SAEIA under the 2026 EIA amendments. It takes over the functions of the State Expert Appraisal Committee (SEAC) when the state committee lapses, and it assists SAEIA in appraising projects. Like SAEIA, it is composed of ex-officio members, raising concerns about weakened technical scrutiny. Example: SCEIA appraises Category B project proposals and recommends whether SAEIA should grant environmental clearance.
• sustainable: In environmental governance, 'sustainable' describes development that meets the needs of the present without compromising the ability of future generations to meet their own needs. The term comes from the 1987 Brundtland Commission report (Our Common Future) and is embedded in the Rio Declaration and the UN Sustainable Development Goals. In EIA practice it means keeping resource use within the carrying capacity of the environment. Example: The UN's 17 Sustainable Development Goals, adopted in 2015, operationalise sustainability across poverty, health, energy, and climate targets for 2030.
• sustainable project design: In EIA practice, sustainable project design means building environmental safeguards into a project's planning stage rather than treating them as afterthoughts. It involves choosing sites, technologies, and resource-use patterns that minimise pollution, waste, and ecological damage while using resources efficiently. It is one of the stated objectives of environmental impact assessment, turning the EIA from a compliance formality into a design tool.
• efficient resource utilisation: Efficient resource utilisation means using natural and material resources in a way that maximises useful output while minimising waste, energy use and environmental harm. It is a core objective of environmental impact assessment and of schemes that push industries toward cleaner production. For UPSC, it connects to energy efficiency, circular economy, and the Perform, Achieve and Trade (PAT) scheme for industry. Example: The PAT scheme under the Bureau of Energy Efficiency, which sets specific energy consumption targets for energy-intensive industries and lets overachievers trade savings certificates.
• public health and safety: Public health and safety is the consideration of how a project or activity affects the health and physical safety of nearby communities. In EIA it appears as a mandatory impact dimension: projects must assess risks such as air and water contamination, noise, hazardous-material accidents and disease vectors. Clearances can impose conditions, buffer zones or emergency plans to protect it. Example: The safety conditions and emergency response plans imposed on a chemical plant near a settlement to prevent a Bhopal-type gas leak disaster.
• Participation: Participation is the involvement of citizens in the decisions and processes that affect them, from voting and protest to consultation in governance. The 73rd and 74th Amendments institutionalised grassroots participation through Panchayati Raj and municipalities. For UPSC mains it is a core GS-2 value: answers on democracy, decentralisation and welfare delivery routinely invoke people's participation as the test of legitimacy. Example: the Gram Sabha, the village assembly institutionalising direct participation under the 73rd Amendment
• Transparency: Transparency is the ethical value of openness in decision-making: making the reasons, processes, and outcomes of public action visible and accessible to citizens. It rests on the idea that power exercised in the open is harder to abuse. For UPSC GS-4, transparency is paired with accountability as a foundational value of good governance, and it underpins the Right to Information framework. Example: The RTI Act, 2005, which gives citizens the right to seek information from public authorities, is India's principal legal instrument of transparency.
• Accountability: Accountability is the obligation of public officials to answer for their actions, explain their decisions and accept consequences for failure. It operates vertically through elections and hierarchies, and horizontally through audit institutions, the judiciary and legislative oversight. Transparency, the Right to Information and social audits are its enabling tools. For UPSC, accountability is a foundational GS-4 value, and answers must link it to probity, answerability and institutional checks. Example: Social audits of MGNREGA works in Andhra Pradesh, which exposed muster-roll fraud and strengthened wage accountability.
• credibility: In environmental impact assessment, the principle that an assessment must be carried out professionally, impartially and with independent verification, so that decision-makers and the public can trust its findings. Credibility is undermined when assessments rely on poor baseline data, undisclosed conflicts of interest or non-verifiable claims. It stands alongside accountability and transparency as a basic quality principle of EIA practice. Example: The International Association for Impact Assessment lists credibility, alongside accountability and transparency, among the basic principles of good EIA practice.
• Category: In the context of India's Environmental Impact Assessment regime, 'Category' refers to the classification of proposed projects under the EIA Notification, 2006 into Category A and Category B. The category decides the level of environmental scrutiny a project faces and whether clearance is appraised by the central government or by the state government. Every project listed in the notification's schedule is assigned a category based on its scale and likely environmental impact.
• Full EIA study: A Full EIA study, also called a comprehensive EIA, is an Environmental Impact Assessment based on baseline data collected over three seasons (a nine month period) covering air, water, soil, noise and biodiversity. It provides a thorough year-round picture of the project site's environment and is contrasted with a Rapid EIA, which relies on a single season of data and is considered less reliable. Comprehensive EIA is the expected standard for projects with significant environmental impacts. Example: A large dam project would require a Full EIA study capturing seasonal variation in river flow and migratory species.
• Public hearing: A public hearing is the in-person component of public consultation under the EIA Notification, 2006, convened by the State Pollution Control Board at or near the proposed project site. Affected people, local bodies, and stakeholders record their objections, suggestions, and concerns about the draft Environmental Impact Assessment report, and the proceedings form part of the record considered before environmental clearance. It is the principal formal channel for community participation in project approval. Example: Villagers recording objections to a proposed thermal power plant at a public hearing chaired by the district administration
• Step: In the Environmental Impact Assessment process under the EIA Notification 2006, a step is one of the prescribed stages that a project must pass through before environmental clearance: screening (for Category B), scoping, public consultation and appraisal. Each step has defined procedures and authorities, such as the SEAC at the appraisal step. Example: Public consultation is the step where affected people can raise objections to a proposed project before the appraisal.
• Scoping: Scoping is the EIA stage at which the appraisal committee (the EAC for Category A projects, the SEAC for Category B) decides what the environmental impact study must cover, issuing the Terms of Reference. A weak scoping exercise produces a weak EIA, since impacts left out of the Terms of Reference are never studied. It is one of the most consequential steps in the clearance process.
• Public consultation: Public consultation is the stage in India's Environmental Impact Assessment process where the views of people likely to be affected by a proposed project are formally sought before environmental clearance is granted. It has two components: written responses to the draft EIA report and a public hearing conducted by the State Pollution Control Board. The draft EIA Notification 2020 controversially proposed reducing the consultation period from 30 days to 20 days. Example: The public consultation stage of an EIA for a proposed mining project, where nearby residents submit written objections and speak at a hearing
• end-to-end digitisation: End-to-end digitisation means converting an entire workflow, from initial application to final decision and monitoring, into a single seamless digital process with no paper-based or multi-window manual steps in between. In environmental governance it is associated with the PARIVESH portal, which replaced the old fragmented paper trail for environmental, forest and wildlife clearances with online filing, tracking and approval. It improves transparency, speed and accountability in regulatory processes. Example: The PARIVESH portal, where a project proponent files for environmental clearance, tracks appraisal and receives the decision entirely online.
• GIS and Decision Support System integration: GIS (Geographical Information System) is a system for capturing, storing and analysing spatially referenced data on maps, and a Decision Support System is software that combines data, models and analytical tools to aid decision-making. In environmental impact assessment, integrating GIS layers such as protected areas, forests, wetlands and pollution sources with decision support tools helps appraisal committees screen projects objectively. India's Parivesh portal uses GIS-based tools so that clearance decisions are informed by spatial environmental data. Example: A GIS-based screening on the Parivesh portal can flag when a proposed project site overlaps an eco-sensitive zone, helping the appraisal committee impose appropriate conditions.
• real-time tracking and transparency: In the EIA context, real-time tracking and transparency refers to digital systems, notably the Parivesh portal, that let project proponents and the public follow a clearance proposal's status online with automated alerts. By making each procedural step visible, it reduces discretion, delay and rent-seeking in environmental approvals. The 2026 reform discussion extends this to automatically flagging overlaps with forests, wildlife zones and eco-sensitive areas. Example: The Parivesh portal's single-window dashboard where an applicant can see exactly which appraisal stage a mining clearance proposal is stuck at.
• auto-escalation: Auto-escalation is a governance mechanism under which a proposal that remains stuck beyond a fixed timeline is automatically forwarded to a higher authority for decision, removing the bottleneck without fresh action by the applicant. In India's environmental clearance process, the PARIVESH portal's 2026 reform introduced auto-escalation so that proposals stalled at the state level are forwarded to the standing authority, ensuring that lapsed consultations do not become indefinite vetoes. It embodies the ease-of-doing-business push to pair faster clearances with accountability. Example: If a mining project's state-level appraisal committee fails to decide within the stipulated period, the file automatically moves to the central standing authority.
• draft EIA Notification, 2020: The draft EIA Notification, 2020 was a proposal issued by the Ministry of Environment, Forest and Climate Change in March 2020 to replace the EIA Notification of 2006. Its most debated provisions were the reduction of the public consultation response period from 30 to 20 days, a formal route for post-facto (ex-post facto) clearance of projects operating in violation, and expanded exemptions for categories such as inland waterways, national highway expansion and large building projects. It drew sharp criticism from environmentalists and a UN Special Rapporteur, and it remained a draft amid the controversy. Example: The proposal to cut the public consultation window from 30 to 20 days, which critics said would curtail the voice of project-affected communities.
• post-facto clearance: Post-facto clearance means granting environmental clearance to a project that was already built or started operating without the mandatory prior approval. India's EIA framework requires prior clearance precisely so that impacts are assessed before construction begins, and the Supreme Court has repeatedly held that retrospective clearance is alien to environmental jurisprudence. In Alembic Pharmaceuticals Ltd. v. Rohit Prajapati (2020), the Court struck down the practice of ex post facto clearances and imposed heavy compensation on the offending industries. Example: The draft EIA 2020 notification's proposal to let violation projects be regularised after construction, which drew strong public opposition and remains unfinalised.
• Jan Vishwas (Amendment of Provisions) Act, 2023: The Jan Vishwas (Amendment of Provisions) Act, 2023, notified on 11 August 2023, decriminalised 183 provisions across 42 Central Acts administered by 19 ministries and departments, replacing imprisonment for minor, technical, or procedural defaults with monetary penalties. It matters for UPSC as the centrepiece of the ease-of-doing-business and trust-based-governance reform push. Example: Minor offences under laws such as the Patents Act shifted from jail terms to civil penalties.
• National Green Tribunal: The National Green Tribunal is a statutory environmental court established on 18 October 2010 under the National Green Tribunal Act, 2010, with its principal bench in New Delhi and circuit benches across India. It adjudicates cases on environmental protection, applies the polluter pays and precautionary principles, is not bound by the Civil Procedure Code, and is guided by natural justice. It matters for UPSC as GS-2/GS-3 environment governance, frequently cited in mains answers on environmental justice. Example: The NGT ordered the closure of the Sterlite copper plant at Thoothukudi, Tamil Nadu, in 2018 over pollution concerns
• Narmada Bachao Andolan: The Narmada Bachao Andolan is a social movement led by Medha Patkar since the mid-1980s against large dams on the Narmada, especially the Sardar Sarovar Dam, demanding proper rehabilitation of displaced tribals and farmers. It used satyagraha, jal samarpan and legal action, prompted the World Bank's withdrawal from the project in 1993, and won Supreme Court rulings conditioning dam height on rehabilitation. It matters for UPSC as the defining case of development versus displacement in India. Example: In 2000 the Supreme Court allowed the Sardar Sarovar Dam to be raised, but only in stages tied to the verified rehabilitation of project-affected families.
• Sardar Sarovar dam: The Sardar Sarovar dam is the large concrete gravity dam on the Narmada river at Kevadia, Gujarat, the terminal and largest structure of the Narmada Valley Project. It supplies irrigation, drinking water and power to Gujarat, Madhya Pradesh, Maharashtra and Rajasthan, but its height increases displaced thousands and drew the Narmada Bachao Andolan's opposition. It is a recurring UPSC topic in geography, environment and polity. Example: Medha Patkar led the Narmada Bachao Andolan against displacement caused by the dam.
• Kalpavriksh: Kalpavriksh is a Pune-based non-profit environmental action group founded in 1979 by a student-led collective, including environmentalist Ashish Kothari, that first campaigned to save Delhi's Ridge forest. It works on environment, ecology and development alternatives through research, grassroots action, advocacy and litigation, and has been involved in landmark campaigns from the Narmada dams to forest rights. Named after the mythical wish-fulfilling tree, it is one of India's longest-running independent environmental organisations. Example: Kalpavriksh's scrutiny of the POSCO steel project in Odisha exposed gaps in forest clearance and public consultation, strengthening demands for due process in environmental impact assessment.
• POSCO steel project in Odisha: The proposed 12 million-tonne-per-annum steel plant by South Korea's POSCO at Jagatsinghpur in Odisha, for which an MoU was signed in 2005 as one of India's largest proposed foreign direct investments. The project became a landmark environmental and land-acquisition controversy over forest clearance, displacement of betel-vine farmers and recognition of community rights under the Forest Rights Act, and POSCO withdrew in 2017. It is a standard case study in Indian environmental law. Example: The project's stalled clearances made it a textbook case of the tension between large industrial investment and community forest rights in India.
• Goa Foundation: The Goa Foundation is a Goa-based environmental organisation founded by environmentalist Claude Alvares, known for landmark public interest litigation on mining and environmental clearances. Its Supreme Court petitions against iron-ore mining in Goa secured a temporary mining ban and court orders mandating fresh environmental impact assessments, making it a leading example of civil society enforcing EIA law. Example: The Goa Foundation's petitions led the Supreme Court to halt iron-ore mining in Goa and order fresh environmental clearances.
• Greenpeace India: Greenpeace India is the Indian arm of the global Greenpeace environmental network, active in India since 2001 as a registered society. It campaigns on climate change, air pollution, forest protection, sustainable agriculture and nuclear safety, and is known for non-violent direct-action protests and research-based advocacy. It has also been at the centre of regulatory controversies, including the suspension of its FCRA registration by the Home Ministry in 2015 over alleged violations. Example: Its air-pollution monitoring and campaigns added public pressure that preceded the launch of the National Clean Air Programme in 2019.
• Mundra Port and SEZ: Mundra Port and Special Economic Zone, in Kutch district of Gujarat, is India's largest private port, operated by Adani Ports and Special Economic Zone Ltd. It became a landmark case in environmental governance when a Ministry of Environment-appointed committee in 2013 found violations of environmental clearance conditions in the port and SEZ development, recommending remedial action. The case is cited as an example of how independent scientific scrutiny and litigation can expose gaps in Environmental Impact Assessment and clearance compliance. Example: A 2013 MoEF-appointed committee headed by Sunita Narain reported environmental clearance violations at the Mundra Port and SEZ.
• weak post-clearance monitoring: Weak post-clearance monitoring refers to the poor follow-up on environmental clearances after projects are approved under India's EIA regime. Although clearances carry binding conditions, verification depends heavily on the project proponent's own self-reported compliance, while regional offices and State Pollution Control Boards are understaffed and rarely impose penalties, so violations go unchecked. It is one of the most cited flaws of the EIA process, weakening the whole clearance system. Example: Compliance with clearance conditions in India is largely self-reported by project proponents, with regulatory agencies lacking the staff to verify claims on the ground.
• poor report quality: Poor report quality is a recurring criticism of Environmental Impact Assessment in India: EIA reports are often prepared by consultants hired by the project proponent, with incomplete or copied baseline data and generic, one-size-fits-all Environmental Management Plans. Because clearances are granted on the basis of these self-reported documents, weak reports directly weaken environmental scrutiny. Reform proposals call for independent data collection, accreditation of consultants and third-party verification. Example: EIA reports with baseline air-quality data lifted from a different project site, a malpractice repeatedly flagged in official reviews of India's EIA system.
• tokenistic public participation: Tokenistic public participation is consultation that exists on paper but has no real influence on decisions, turning public hearings into a formality. In India's EIA process it typically means hearings held with poor notice, in remote locations, or in languages affected communities do not understand, so tribal and rural voices are recorded but not heard. It is repeatedly cited as a weakness of environmental clearance, alongside poor report quality and ignored cumulative impacts.
• ignored cumulative impacts: Ignored cumulative impacts refers to the failure of environmental clearance systems to account for the combined, landscape-level effects of many projects that are assessed one by one. Each project may look acceptable in isolation, yet together they can destroy a river basin, a forest corridor, or an airshed. India's project-by-project EIA process is criticised for missing exactly these effects. Example: Several dams and mines planned on the same river, where each clearance ignores what the others will add to the losses of water, forest, and livelihoods.
• conflict of interest: A conflict of interest is a situation in which a public official's personal, financial, or family interests clash, or appear to clash, with their official duties, undermining impartial decision-making. Ethics codes require disclosure and recusal to manage it. For UPSC, it is a core GS-4 concept, tested through case studies on procurement, appointments, and regulation, where the right answer usually begins with declaring the conflict. Example: Office-of-profit disqualifications, e.g., Jaya Bachchan's Rajya Sabha disqualification in 2006
• dilution through exemptions: Dilution through exemptions is the weakening of environmental regulation that occurs when an expanding list of exempted project categories shrinks the universe of projects actually subjected to environmental scrutiny. In the EIA context, each new exemption from prior environmental clearance or public consultation removes a class of projects from assessment, so the regulatory net covers less even though the rules on paper look intact. It is one of the central criticisms levelled at the draft EIA Notification, 2020. Example: Critics argued that the draft EIA Notification, 2020's long list of exemptions, such as for inland waterways and highway expansion, would dilute environmental scrutiny by keeping major projects outside the clearance process.
• EIA assesses ecological impacts; SIA assesses the human and social dimension: This statement draws the core distinction between the two impact assessments used in project appraisal. An Environmental Impact Assessment evaluates a proposed project's effects on the natural environment, such as air and water quality, soil, forests, wildlife and pollution load. A Social Impact Assessment evaluates effects on people, such as displacement and resettlement, livelihoods, health, culture and community structures, and is a statutory step under the land acquisition law (RFCTLARR Act, 2013). A complete appraisal needs both: a dam, for example, alters river ecology (EIA) and displaces riverside communities (SIA). Example: Before acquiring land for a large industrial project, authorities must conduct an SIA to assess livelihood loss, alongside an EIA for ecological damage.
• Expert Group: In the land acquisition process, an Expert Group is an independent multidisciplinary body that evaluates the Social Impact Assessment report for a proposed acquisition. Under the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013, it reviews whether the social costs outweigh the public benefits and can recommend abandoning the project. Its appraisal brings expert scrutiny to displacement impacts before acquisition proceeds. Example: The Expert Group appraising an SIA report for a highway project can recommend that it be abandoned if social costs outweigh the benefits.
• Panchayats (Extension to Scheduled Areas) Act, 1996: The Panchayats (Extension to Scheduled Areas) Act, 1996 extends the panchayat system of Part IX to Fifth Schedule areas with suitable modifications. It vests the Gram Sabha with powers over minor forest produce, land alienation, village markets, and approval of development plans. For UPSC it is the key statute linking tribal self-governance, the Forest Rights Act, and decentralisation. Example: A Gram Sabha's mandatory consent before land acquisition in a Scheduled Area.
• Forest Rights Act, 2006: The Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006, recognises forest dwellers' rights to land, minor forest produce, and community forest resources, including the right to protect and manage them. Claims are settled through gram sabha-led committees. For UPSC, its implementation record is a recurring mains theme on tribal welfare, conservation conflicts, and decentralised governance. Example: Gram sabhas have filed community forest resource claims under the Act to manage and protect their traditional forests.
• Environmental Impact Assessment (EIA): Environmental Impact Assessment is a process of identifying, predicting and evaluating the likely environmental impacts of a proposed project before it is cleared, so that decision makers can approve, modify or reject it. In India it is mandatory for specified projects under the EIA Notification, 2006 issued under the Environment (Protection) Act, 1986, and it involves screening, scoping, public consultation and appraisal before environmental clearance is granted. Applications and status tracking run through the PARIVESH portal. Example: A proposed mining or thermal power project must obtain prior environmental clearance based on its EIA before construction begins.
• Environmental Clearance (EC): Environmental Clearance is the prior permission a project proponent must obtain from the government before starting any project listed in the schedule of the EIA Notification, 2006. It is granted after the EIA cycle of screening, scoping, public consultation and appraisal: Category A projects are cleared at the Centre on Expert Appraisal Committee recommendations, while Category B projects go through State authorities. Starting construction without a valid EC is a violation that can lead to closure orders and prosecution, and applications are filed through the PARIVESH portal. Example: A mining lease cannot be executed until the project secures environmental clearance from the competent authority.
• State Environment Impact Assessment Authority (SEIAA): The State Environment Impact Assessment Authority is the state-level body constituted under the EIA Notification, 2006 that grants or rejects prior environmental clearance for Category B projects. It acts on the appraisal recommendations of the State Expert Appraisal Committee (SEAC), and its members must meet domain-experience criteria under Appendix VI of the notification. When a SEIAA lapses, the 2026 amendments route pending proposals to the new Standing Authority on EIA (SAEIA). Example: A SEIAA deciding the environmental clearance of a Category B limestone mining project based on the SEAC's appraisal report.
• State Expert Appraisal Committee (SEAC): The State Expert Appraisal Committee is the state-level expert body constituted under the EIA Notification 2006. It scrutinises the EIA reports and public-hearing records of Category B projects (those needing full EIA, called B1), and then recommends to the State Environment Impact Assessment Authority whether environmental clearance should be granted or refused. Example: A proposed cement plant in a state is appraised by the SEAC before the SEIAA decides on its environmental clearance.
• Alembic Pharmaceuticals v. Rohit Prajapati (2020): Alembic Pharmaceuticals Ltd. v. Rohit Prajapati (2020) is a landmark Supreme Court judgment delivered on 1 April 2020 on the legality of ex post facto environmental clearances. The Court held that the concept of a retrospective environmental clearance is alien to environmental jurisprudence because prior appraisal, public hearing, and impact study are essential safeguards that cannot be applied after the fact. It struck down a 2002 Environment Ministry circular permitting such clearances. Example: Applying the doctrine of proportionality, the Court let the three defaulting industries continue operating but ordered each to deposit Rs 10 crore with the Gujarat Pollution Control Board for environmental restoration.
• Vanashakti v. Union of India: Vanashakti v. Union of India is the Supreme Court litigation on whether environmental clearance can be granted after a project has already been built without the prior clearance mandated by law. In May 2025 a two-judge Bench struck down the 2017 notification and the 2021 office memorandum permitting such post-facto clearances; the verdict was recalled 2:1 on review in November 2025, and a July 2026 judgment restored the 2017 notification while invalidating the 2021 memorandum, barring the executive route for post-facto clearances.
• Standing Authority on EIA (SAEIA): The Standing Authority on EIA (SAEIA) is a standing body created under the July 2026 amendments (S.O. 3862(E) and 3863(E)) to the EIA Notification, 2006, one for each state and Union Territory. It assumes the functions of the State Environment Impact Assessment Authority (SEIAA) whenever the SEIAA becomes non-functional for over a month due to expired tenure, reconstitution delays or a court stay, ensuring clearance decisions never freeze. It is chaired by the chief secretary (or the administrator's advisor) with ex-officio members, a composition that has raised concerns about weakened expert scrutiny. Example: If a state's SEIAA lapses after its tenure expires, pending Category B project proposals are automatically routed to the SAEIA through the PARIVESH portal.
• Standing Committee on Environment Impact Appraisal (SCEIA): The Standing Committee on Environment Impact Appraisal (SCEIA) is the standing appraisal body created alongside the SAEIA under the July 2026 amendments to the EIA Notification, 2006, for each state and UT. It steps in for the State Expert Appraisal Committee (SEAC) when appraisals are delayed, including automatic referral of proposals not appraised by the SEAC within 120 days, and it advises the SAEIA on clearance recommendations. Like the SAEIA it comprises ex-officio members, drawing criticism that administrative officials replace domain experts in environmental appraisal. Example: A mining proposal stalled at the SEAC level for over 120 days being automatically forwarded to the SCEIA via PARIVESH for appraisal.
• Noble M. Paikada v. Union of India: Noble M. Paikada v. Union of India (2024 INSC 241) is a Supreme Court judgment of 21 March 2024 in which a bench of Justices Abhay S. Oka and Sanjay Karol struck down item 6 of Appendix IX of the 2020 and 2023 notifications issued under the Environment (Protection) Rules, 1986. The item had granted a blanket exemption from prior environmental clearance for extraction of ordinary earth for undefined linear projects; the Court held it arbitrary and violative of Articles 14 and 21, ruling that exemptions require data, safeguards and public consultation. Example: The judgment is cited as authority against post facto or blanket environmental clearances granted without the procedures laid down in the Environment (Protection) Rules.
• Vanashakti: Vanashakti is a Mumbai-based environmental non-governmental organisation active in mangrove and forest conservation and a frequent public-interest litigant on environmental clearances. It is known nationally as the petitioner that challenged the 2017 notification and the 2021 office memorandum permitting ex post facto environmental clearances. Example: Its petition gave rise to the Supreme Court's Vanashakti v. Union of India litigation on post-facto environmental clearance.
• Social Impact Assessment (SIA): Social Impact Assessment is a mandatory study under the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013 (LARR Act), conducted before land is acquired for a project. It assesses whether the proposed acquisition serves a genuine public purpose, estimates the number of affected families, examines the social and economic impact on livelihoods, and requires consultation with gram sabhas in Scheduled Areas. The SIA report, along with an expert group's appraisal, is a precondition for the government's preliminary notification of acquisition. Example: An SIA conducted for a proposed industrial corridor project to document affected families and rehabilitation requirements before land acquisition begins.
• Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013: The Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013 is the law governing compulsory acquisition of land in India, replacing the colonial Land Acquisition Act of 1894. It requires the consent of 70 per cent of affected families for public-private partnership projects and 80 per cent for private projects, mandates a Social Impact Assessment before acquisition, and fixes compensation at up to four times the market value (twice the market value plus 100 per cent solatium), together with defined rehabilitation and resettlement entitlements. Example: Its consent and rehabilitation provisions are frequently invoked in disputes over land taken for expressways, industrial corridors and mining projects.
• 70% of affected families for PPP projects and 80% for private projects: This is the prior informed consent threshold under Section 2(2) of the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013. Land can be acquired for public-private partnership projects only with the consent of at least 70 percent of affected families, and for private companies only with the consent of at least 80 percent; government acquiring for its own purposes is exempt. Example: Industrial and infrastructure projects involving private partners must document this consent through the Social Impact Assessment process before acquisition can proceed.
• Strategic Environmental Assessment (SEA): Strategic Environmental Assessment (SEA) is the evaluation of environmental effects of a policy, plan or programme before individual projects are decided. It tackles cumulative impacts and alternatives at regional or sector scale. Example: a river-basin assessment that decides the pattern of hydropower projects before each dam seeks clearance.
• Environmental Supplemental Plan: Environmental Supplemental Plan is a voluntary environmentally beneficial project that an alleged violator undertakes as part of an environmental clearance settlement, beyond what law otherwise requires. It is meant to add ecological repair, not replace prior clearance. Example: funding wetland restoration in addition to paying compensation for a violation.
• Tiering: Tiering is the linking of assessment levels so that strategic assessments inform project assessments and project findings feed back into plans. It prevents every project EIA from restarting baseline and alternatives analysis from zero. Example: project terms of reference drawn from a completed river-basin SEA.

Prelims practice