27. Environmental Impacts of Gas Development

Introduction

Gas development includes exploration, drilling, extraction, processing, transportation and distribution of natural gas. Although natural gas has historically been promoted as a comparatively lower-carbon fossil fuel, its development can create significant environmental impacts, including methane emissions, groundwater contamination, air pollution, habitat disturbance, waste generation and risks associated with pipelines and industrial infrastructure. Environmental regulation is therefore essential to balance energy requirements with ecological protection.

Legal Framework in India

Environmental regulation of gas projects is governed by several statutes. The Environment (Protection) Act, 1986 (EPA) provides the central framework for environmental protection. The Water (Prevention and Control of Pollution) Act, 1974 and Air (Prevention and Control of Pollution) Act, 1981 regulate water and air pollution.

The National Green Tribunal Act, 2010 provides a specialized forum for environmental disputes. Depending on the project, environmental clearance under the EIA Notification, 2006 may also be required.

Air Pollution and Methane Emissions

Gas extraction and processing can release methane and other pollutants through leakage, venting and flaring. Methane is a potent greenhouse gas, making leakage an important climate concern.

Gas projects must therefore incorporate appropriate emission controls, monitoring and reporting systems.

In Hanuman Laxman Aroskar v. Union of India (2019), the Supreme Court emphasized that environmental decision-making must consider relevant environmental information and comply with principles of sustainable development.

Water Contamination

Hydraulic fracturing, wastewater generation and accidental spills may create risks to groundwater and surface-water resources. Gas development can therefore require careful water management, waste treatment and pollution-control measures.

The Water Act, 1974 provides mechanisms for controlling pollution and requires applicable permissions from pollution-control authorities.

In Vellore Citizens' Welfare Forum v. Union of India (1996), the Supreme Court recognized the precautionary principle and polluter-pays principle as part of Indian environmental law. These principles are particularly relevant where environmental risks from gas operations are uncertain or potentially serious.

Land and Biodiversity Impacts

Exploration wells, roads, pipelines, processing facilities and compressor stations can fragment habitats and affect forests, agricultural land and wildlife.

Environmental clearance procedures should therefore consider cumulative ecological impacts rather than examining individual infrastructure components in isolation.

The Supreme Court's environmental jurisprudence, including T.N. Godavarman Thirumulpad v. Union of India, demonstrates the importance of protecting forests and ecological resources from incompatible development.

Pipeline and Industrial Risks

Gas pipelines and processing facilities can present risks of leakage, explosion and fire. Operators must comply with applicable safety standards and maintain emergency-response systems.

Regulation should address inspection, maintenance, monitoring and public-safety requirements throughout the project's lifecycle.

Environmental Impact Assessment

Environmental Impact Assessment (EIA) is an important mechanism for identifying potential environmental consequences before project approval. A proper EIA should consider:

air and water pollution;

greenhouse-gas emissions;

biodiversity;

groundwater;

waste management;

accident risks;

cumulative impacts; and

impacts on local communities.

In Alembic Pharmaceuticals Ltd. v. Rohit Prajapati (2020), the Supreme Court emphasized the importance of prior environmental clearance and rejected the idea that environmental authorization can ordinarily be obtained retrospectively to cure unauthorized development.

Climate-Change Considerations

Gas development creates a difficult legal policy question because natural gas can provide dispatchable energy while still producing greenhouse-gas emissions.

Environmental authorities increasingly need to consider both direct emissions and climate implications when assessing major gas infrastructure.

Earthlife Africa Johannesburg v. Minister of Environmental Affairs (2017) is particularly relevant comparatively because the High Court held that climate-change impacts were relevant to environmental authorization of a major energy project.

Community and Public Participation

Gas development can affect landowners, communities and livelihoods. Environmental decision-making should therefore provide legally required opportunities for public participation and access to relevant information.

In Orissa Mining Corporation v. Ministry of Environment & Forests (2013), the Supreme Court recognized the importance of community participation in decisions affecting protected interests and natural resources.

Liability and Remediation

Where pollution occurs, environmental law may require restoration and compensation. The polluter-pays principle places responsibility for environmental costs upon the party causing the pollution, subject to the applicable statutory framework.

Conclusion

Gas development can provide energy and economic benefits but may also generate air pollution, methane emissions, water contamination, habitat loss, waste and industrial-safety risks. India's environmental framework—particularly the Environment Protection Act, Water Act, Air Act, EIA regime and National Green Tribunal Act—provides mechanisms for controlling these impacts. Vellore Citizens' Welfare Forum, Hanuman Laxman Aroskar, Alembic Pharmaceuticals, T.N. Godavarman and Orissa Mining Corporation demonstrate important principles of precaution, environmental assessment, forest protection and public participation. Sustainable gas governance therefore requires prior assessment, pollution control, methane monitoring, biodiversity protection, community participation, safety regulation and effective remediation, while taking account of the project's broader climate consequences.