Environmental Impact Assessment: Complete Note on the EIA Notifications, the Clearance Process, Sectoral Clearances, Ex Post Facto Clearance and Appeals

Environmental impact assessment is the principal preventive instrument of Indian environmental law. It requires that the environmental consequences of a project be studied, disclosed to the public and weighed by an expert body before the project is approved. In India the process is governed by the EIA Notification, 2006, made under the Environment (Protection) Act, 1986, under which listed projects need a prior environmental clearance from the Ministry of Environment, Forest and Climate Change or a State authority. This note covers the concept, the history, every stage of the process, sectoral clearances, post-clearance monitoring, the controversy over ex post facto clearance, and the relationship between environmental clearance and other permissions.

1. Meaning and Purpose of EIA

An environmental impact assessment is a systematic process for identifying, predicting and evaluating the likely environmental, social and economic effects of a proposed project before a decision is taken to approve it, and for designing measures to avoid, reduce or offset adverse effects. UNEP describes it as a tool used to identify the environmental, social and economic impacts of a project prior to decision-making.

EIA serves five purposes:

1. Prevention: it identifies harm before it occurs, applying the principle of prevention and, where effects are uncertain, the precautionary principle.
2. Informed decision-making: it gives the regulator the facts needed to approve, modify or reject a project.
3. Better project design: it encourages alternatives in site, technology and scale that reduce harm.
4. Public participation: through public consultation, it gives affected people a voice before the decision.
5. Integration: it builds environmental considerations into development, the core of sustainable development (Rio Principle 17).

2. History of EIA in India

Modern EIA began with the US National Environmental Policy Act, 1969, which required environmental impact statements for major federal actions. In India, the Planning Commission and the Department of Science and Technology began examining river valley projects from an environmental angle in 1976 to 1977, and environmental appraisal of large projects became an administrative requirement in the 1980s. It had no statutory force until 1994.

2.1 The EIA Notification, 1994

The EIA Notification of 27 January 1994, made under Sections 3(1) and 3(2)(v) of the EPA and Rule 5(3)(d) of the Environment (Protection) Rules, made environmental clearance from the Central Government mandatory for the expansion or modernisation of existing activities and for new projects listed in its Schedule I (about thirty categories). Public hearing was added by an amendment in 1997. The notification was amended many times, and its centralised procedure was criticised for delay, weak public participation and poor monitoring.

2.2 The EIA Notification, 2006

The EIA Notification of 14 September 2006, which replaced the 1994 Notification, remains the governing instrument. Its main reforms were: decentralisation, by creating State-level authorities for Category B projects; a four-stage process (screening, scoping, public consultation, appraisal); categorisation of projects by potential impact rather than investment; and time-limits for each stage. It has been amended many times since, often by notifications and office memoranda. A Draft EIA Notification, 2020, intended to replace it, attracted widespread objection, including to its provisions on post-facto clearance and reduced public consultation, and was not finalised.

3. Prior Environmental Clearance and the Projects that Need It

The word 'prior' is the core of the scheme: clearance must precede any construction or land preparation. The Schedule lists the covered activities in groups: mining and extraction of natural resources and power generation (item 1); primary processing (item 2); materials production (item 3); materials processing (item 4); manufacturing and fabrication (item 5); service sectors such as oil and gas pipelines and hazardous chemical storage (item 6); physical infrastructure including environmental services, such as airports, industrial estates, ports, highways, common treatment facilities (item 7); and building, construction and area development projects and townships (item 8).

3.1 Category A projects

Category A projects are those with the greatest potential impact, such as large mining leases, large thermal power plants, river valley projects above specified thresholds, nuclear projects, large ports and airports, and national highways above specified thresholds. They are appraised at the central level by an Expert Appraisal Committee (EAC) and cleared by the MoEFCC.

3.2 Category B projects

Category B projects have lesser potential impact and are appraised at the State level by the State Expert Appraisal Committee (SEAC) and cleared by the State Environment Impact Assessment Authority (SEIAA). Under the General Condition in the Schedule, a Category B project is treated as Category A if it is located, in whole or in part, within 10 kilometres of the boundary of a protected area notified under the Wild Life (Protection) Act, a critically polluted area identified by the CPCB, a notified eco-sensitive area, an inter-State boundary or an international boundary.

3.3 Category B1 and B2 projects

Category B projects are screened by the SEAC and divided into two sub-categories. Category B1 projects require the preparation of an EIA report and, ordinarily, public consultation. Category B2 projects do not require an EIA report and are exempt from public consultation; they are appraised on the basis of the application and supporting documents. The division is made according to guidelines issued by the MoEFCC.

4. The Institutions

4.1 MoEFCC and environmental clearance

The MoEFCC is the regulatory authority for Category A projects. It constitutes the sector-wise Expert Appraisal Committees, receives applications through its online portal (PARIVESH), issues terms of reference on the EAC's recommendation, and grants or rejects clearance. Its Regional Offices monitor compliance with clearance conditions.

4.2 State Environment Impact Assessment Authority (SEIAA)

The SEIAA is constituted by the Central Government under Section 3(3) of the EPA on the recommendation of the State Government. It consists of three members, including a Chairman and a Member-Secretary, with prescribed qualifications and experience. It is the regulatory authority for Category B projects and must base its decisions on the recommendations of the SEAC.

4.3 Expert Appraisal Committee (EAC) and State Expert Appraisal Committee (SEAC)

The EAC at the central level and the SEAC at the State level are sector-specific expert committees consisting of professionals and experts in fields such as environmental quality, sectoral management, EIA process, risk assessment, life sciences, forestry and wildlife, environmental economics and social impact assessment. Their functions are to screen (SEAC only), scope and appraise projects, and recommend grant or rejection of clearance. The quality of their scrutiny has been a recurring theme in litigation: in Hanuman Laxman Aroskar v. Union of India, (2019) 15 SCC 401, the Supreme Court sent a clearance back because the EAC had not independently applied its mind to material omissions in the EIA report.

5. The Four Stages of the EIA Process

5.1 Stage one: Screening

Screening applies only to Category B projects. The SEAC examines the application in Form 1 (and, for building projects, Form 1A) and decides whether the project needs further environmental studies, placing it in Category B1 (EIA required) or Category B2 (no EIA).

5.2 Stage two: Scoping and Terms of Reference

Scoping is the process by which the EAC or SEAC determines detailed and comprehensive Terms of Reference (ToR) addressing all relevant environmental concerns for preparing the EIA report. The ToR specify the studies to be carried out: baseline data on air, water, soil, noise, ecology and socio-economic conditions; prediction of impacts; alternatives; risk assessment; and the environmental management plan. Scoping is based on the information in Form 1, a proposed ToR, site visits where necessary, and other information. The ToR must be conveyed within sixty days; if not, the ToR proposed by the applicant are deemed approved. The Ministry has issued standard ToR for many sectors, and the committees may add project-specific terms. Scoping may also result in rejection of the application at the outset.

5.3 Preparation of the EIA report

The project proponent, through an accredited consultant, prepares a draft EIA report in accordance with the ToR, following the generic structure in the notification. It must describe the project and its alternatives, the baseline environment, anticipated impacts and mitigation measures, environmental monitoring, risk assessment and disaster management, project benefits, the environmental management plan, and an executive summary. Consultants must be accredited, and the proponent and consultant are responsible for the accuracy of the report. Deliberately false or misleading information, or concealment of material facts, is a ground for rejection or for cancellation of a clearance already granted.

5.4 Stage three: Public consultation

Public consultation is the process by which the concerns of local affected persons and others with a plausible stake in the environmental impacts are ascertained. It has two components:

1. Public hearing at or near the site, conducted by the State Pollution Control Board (or Union territory Pollution Control Committee) for local affected persons. The draft EIA report and its summary in English and the local language are made available in advance; a notice is published giving at least thirty days for responses; the hearing is presided over by the District Magistrate or an officer not below the rank of Additional District Magistrate; and the proceedings are video-recorded and the minutes, including all views expressed, are forwarded to the regulatory authority. The hearing is to be completed within forty-five days of the request.
2. Written responses from other concerned persons with a plausible stake, obtained by placing the summary EIA on the website.

After the consultation, the proponent must address all material concerns and finalise the EIA report and environmental management plan.

5.5 Exemption from public consultation

The notification exempts certain projects from public consultation. They include: modernisation of irrigation projects; projects located within industrial estates or parks that have themselves received environmental clearance; expansion of roads and highways not involving further acquisition of land; building, construction and area development projects under item 8; all Category B2 projects; and projects concerning national defence and security or of strategic importance as determined by the Central Government. Several further exemptions have been added by amendment, such as for certain expansions of mining and industrial projects within limits, and they have been criticised as diluting the participatory scheme.

5.6 Stage four: Appraisal

Appraisal is the detailed scrutiny by the EAC or SEAC of the application, the final EIA report, the outcome of public consultation and any supplementary information. The proponent or its representative may be invited to clarify. The committee makes categorical recommendations to the regulatory authority, either for grant of clearance on stipulated terms and conditions, or for rejection with reasons. Appraisal is to be completed within sixty days of receipt of the final EIA report and documents.

6. The Decision and its Consequences

6.1 Grant of environmental clearance

The regulatory authority considers the recommendation and conveys its decision, ordinarily within forty-five days of receiving the recommendation. It normally accepts the recommendation; if it disagrees, it must request reconsideration by the committee with reasons, and its decision after that is final. Clearances are published on the Ministry's website, and the proponent must publicise them in local newspapers.

6.2 Conditions of environmental clearance

Clearances are granted subject to specific conditions (tailored to the project, such as pollution control equipment, green belt, wildlife conservation plan, restrictions on groundwater extraction, rehabilitation of affected persons) and general conditions (such as compliance with consents under the Water and Air Acts, monitoring, and half-yearly reporting). Conditions are legally enforceable; their breach may lead to directions under Section 5 of the EPA, including suspension of the clearance or closure, and to penalties.

6.3 Rejection of environmental clearance

An application may be rejected at the scoping stage or after appraisal, with reasons. Grounds include unacceptable impacts on sensitive ecosystems, inability to mitigate adverse effects, incompatibility with land use or zoning, concealment or falsity of information, and unresolved public concerns. A clearance already granted may be revoked if it was obtained by misrepresentation or if conditions are violated.

6.4 Validity of environmental clearance

A clearance is valid for the period within which production operations must commence or construction must be completed. As originally framed, the notification allowed a maximum of five years for most projects, ten years for river valley projects, and the project life, up to thirty years, for mining. These periods were extended by an amendment in 2022, to ten years for most projects and longer periods for river valley, nuclear and mining projects (for mining, the life of the mine as approved, subject to an outer limit). Confirm the current periods in the notification as amended.

6.5 Transfer of environmental clearance

A clearance granted for a specific project may be transferred during its validity to another legal person entitled to undertake the project, on application by the transferor, or by the transferee with the written no-objection of the transferor, to the regulatory authority, on the same terms and conditions. No reference to the appraisal committee is required.

6.6 Expansion and modernisation of projects

Any expansion or modernisation of a listed project with an increase in production capacity beyond the threshold, or any change in product-mix beyond the specified range, requires a fresh prior clearance, through the same process with such modifications as the committee considers appropriate. Amendments have allowed certain expansions within limits, for example where there is no increase in pollution load, to proceed without public consultation or on self-certification, a relaxation that remains controversial.

7. Sectoral Environmental Clearances

7.1 Environmental clearance for mining

Mining of minerals is covered by item 1(a) of the Schedule, with larger leases in Category A and smaller ones in Category B. In Deepak Kumar v. State of Haryana, (2012) 4 SCC 629, the Supreme Court held that leases of minor minerals, including sand, even on areas of less than five hectares, require environmental clearance, because cumulative small-scale mining causes serious harm to rivers. The Ministry then brought small minor mineral leases within the notification, provided for cluster assessment and District-level authorities, and issued Sustainable Sand Mining Management Guidelines, 2016. Mining clearances are typically combined with forest clearance, wildlife clearance where applicable, and mine closure and reclamation plans. In Common Cause v. Union of India, (2017) 9 SCC 499, mining in excess of the quantity permitted by the clearance was held to be mining without clearance, attracting compensation equal to the value of the ore extracted.

7.2 Environmental clearance for buildings and construction

Item 8 covers building and construction projects with a built-up area of 20,000 square metres or more and less than 1,50,000 square metres (item 8(a)), and township and area development projects covering 50 hectares or more, or a built-up area of 1,50,000 square metres or more (item 8(b)). These are Category B, exempt from public hearing, and appraised with emphasis on water, energy, waste, traffic and green cover. Environmental conditions for buildings have also been integrated with building bye-laws for certain sizes, and construction dust controls apply under the Environment (Protection) Rules.

7.3 Environmental clearance for industrial projects

Items 3 to 5 cover industries such as metallurgical units, cement, petroleum refining, coke ovens, chemical fertilisers, pesticides, petrochemicals, synthetic organic chemicals, distilleries, pulp and paper, and sugar, with thresholds dividing Category A and B. Projects within notified industrial estates that themselves hold clearance are appraised with lighter procedures. The appraisal focuses on air and water pollution, hazardous waste, risk assessment and the carrying capacity of the region.

7.4 Environmental clearance for thermal power plants

Thermal power plants (item 1(d)) are appraised for coal and water linkages, ash disposal and utilisation, stack emissions, cooling systems, and the cumulative impact of multiple plants in the same region. Clearance conditions incorporate the emission norms of 2015 for particulate matter, sulphur dioxide, oxides of nitrogen and mercury, as later revised, and requirements for full utilisation of fly ash.

7.5 Environmental clearance for infrastructure projects

Item 7 covers infrastructure: airports, industrial estates, ports and harbours, highways, aerial ropeways, common effluent treatment plants and common waste management facilities. Linear projects such as highways raise issues of fragmentation of habitats and cumulative impact along a corridor; ports and airports raise coastal and ecological issues and often require CRZ clearance. Certain strategic and border projects have been exempted or subjected to streamlined procedures, as in the Char Dham road case (Citizens for Green Doon v. Union of India, 2021).

8. Tools within EIA

8.1 Cumulative impact assessment

A project-by-project assessment can miss the combined effect of many projects in the same area or river basin. Cumulative impact assessment evaluates the incremental impact of a project when added to other past, present and reasonably foreseeable projects. The courts have repeatedly insisted on it.

8.2 Carrying capacity study

A carrying capacity study assesses how much development a region's land, water, air and ecosystems can sustain. It is especially important in hill States, coastal zones, islands and water-stressed river basins. EACs and courts have required carrying capacity or regional studies before approving further projects in fragile areas, and the Supreme Court has examined the carrying capacity of Himalayan towns and States after repeated landslides and floods.

8.3 Environmental Management Plan

The Environmental Management Plan (EMP) is the part of the EIA report that sets out how the project will mitigate its impacts in construction and operation: pollution control measures, waste management, green belt development, biodiversity and wildlife conservation, occupational health, rehabilitation, and the institutional arrangements and budget for implementation and monitoring. The EMP is incorporated into the clearance conditions and becomes enforceable.

9. Post-Clearance Monitoring and Violations

9.1 Post-clearance monitoring

The proponent must submit half-yearly compliance reports on the clearance conditions (by 1 June and 1 December each year), in hard and electronic form, to the regulatory authority, and upload them on its website. The Regional Offices of the MoEFCC and the State Pollution Control Boards monitor compliance through site visits. Monitoring has historically been the weakest link in the EIA system, because of limited staff and the sheer number of projects; the Environment Audit Rules, 2025 add third-party verification by registered environment auditors.

9.2 Violation of environmental clearance conditions

Violation of clearance conditions is a contravention of an order under the EPA. Consequences include directions under Section 5 (suspension of clearance, stoppage of work, closure), monetary penalties under the amended EPA, environmental compensation, and revocation of the clearance. In N.D. Jayal v. Union of India, (2004) 9 SCC 362, the Court held that compliance with clearance conditions is part of sustainable development and must be monitored. In Common Cause (2017) operation beyond the terms of the clearance was treated as operation without clearance.

10. Ex Post Facto and Retrospective Environmental Clearance

The central principle of EIA is that clearance must be prior. The question whether a project that began without clearance may obtain one later has become the most contested issue in Indian EIA law.

10.1 The judicial development

1. *Common Cause v. Union of India*, (2017) 9 SCC 499: mining without clearance, or in excess of it, was illegal, and the lessees had to pay compensation equal to the price of the ore extracted.
2. *Alembic Pharmaceuticals Ltd. v. Rohit Prajapati*, (2020) 17 SCC 157: the concept of an ex post facto clearance is contrary to the fundamental principles of environmental jurisprudence and an anathema to the EIA Notification. A 2002 circular permitting it was held invalid, but the Court imposed environmental compensation instead of ordering closure.
3. *Electrosteel Steels Ltd. v. Union of India* (2021): the Court held that ex post facto clearance should not ordinarily be granted, but is not prohibited in all circumstances; it may be granted in exceptional cases in accordance with law and with strict compliance with environmental norms.
4. *Pahwa Plastics Pvt. Ltd. v. Dastak NGO* (2022): units that had obtained ex post facto clearance under the government's policy, and whose operations were otherwise permissible, were not ordered to close; the EPA does not prohibit ex post facto clearance as such.

10.2 The 2017 notification and the 2021 office memorandum

In March 2017 the Ministry issued a notification providing a one-time window for projects that had begun without prior clearance ('violation cases') to apply for clearance, with appraisal of the damage, a remediation plan and a natural and community resource augmentation plan. In July 2021 it issued an office memorandum with a standard operating procedure for dealing with violation cases on an ongoing basis, including penalties and the requirement that the activity be permissible at the site.

11. EIA, the Precautionary Principle and Sustainable Development

EIA is the procedural instrument through which the substantive principles of environmental law are applied to individual projects. It implements the precautionary principle, because it requires the proponent to demonstrate, before approval, that the project's effects are acceptable and can be mitigated, placing the burden on the developer (Vellore, 1996; A.P. Pollution Control Board v. M.V. Nayudu, 1999). It implements sustainable development, because it integrates environmental considerations into the development decision (Rio Principles 4 and 17), weighs alternatives, and attaches conditions that allow development within ecological limits. It implements environmental democracy, through public consultation. And the ICJ has held in Pulp Mills (2010) that EIA of activities with significant transboundary risk is a requirement of general international law.

12. Environmental Clearance and Other Permissions

A project may need several distinct permissions, each under a different law with a different purpose. They are cumulative: one does not substitute for another, except where a notification expressly so provides.

The distinctions matter because a project can be halted for want of any one of them. In the Niyamgiri case (Orissa Mining Corporation v. Ministry of Environment and Forests, 2013) the decisive permission was forest clearance and the consent of the Gram Sabhas under the Forest Rights Act, not environmental clearance.

13. Appeal against Environmental Clearance before the NGT

Under Section 16(h) of the National Green Tribunal Act, 2010, any person aggrieved by an order granting environmental clearance in an area in which any industries, operations or processes shall not be carried out or shall be carried out subject to safeguards under the EPA may appeal to the NGT. Clause (i) similarly covers an order refusing clearance. The appeal must be filed within thirty days of the communication of the order, which the Tribunal may extend by up to sixty days on sufficient cause. The NGT has held that the period runs from the date the clearance is placed in the public domain, since affected persons are not individually notified. The expression 'any person aggrieved' is read broadly to include affected residents and public-spirited persons and organisations. A further appeal lies to the Supreme Court under Section 22 on the grounds in Section 100 of the Code of Civil Procedure, as in Hanuman Laxman Aroskar (2019).

14. Critical Appraisal

The EIA regime has been criticised on several counts: EIA reports are prepared by consultants paid by the proponent and are sometimes copied or inaccurate; public hearings are often held in intimidating conditions or treated as formalities; appraisal committees face heavy caseloads and questions of independence; exemptions and relaxations have been made by office memoranda rather than by amendment of the notification; post-clearance monitoring is weak; and the ex post facto clearance policy undermines the requirement of prior clearance. Reforms such as online processing through PARIVESH, standard ToR, accreditation of consultants and third-party audit have improved speed and consistency. The challenge is to keep EIA prior, informed, participatory and enforceable, as its purpose demands.

15. Related Topics and Provisions