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Importance of Environmental Impact Assessment

The significance of Environmental Impact Assessment (EIA) lies in its role in linking environment and development to promote safe and sustainable progress. It provides a cost-effective means to minimize or prevent negative impacts of development projects and enables decision-makers to assess environmental effects well before implementation. EIA supports the integration of mitigation measures into development planning and ensures that projects are environmentally sound while respecting the ecosystem’s capacity for assimilation and regeneration.

Projects covers under the environmental impact assessment

The projects that require Environmental Clearance (EC) under the EIA include:

• Mining and extraction of minerals
• Exploration, production, and development of onshore and offshore oil and gas
• River valley projects
• Thermal power plants
• Nuclear power projects and nuclear fuel processing
• Coal washeries
• Mineral beneficiation processes
• Cement plants
• Petroleum refining activities
• Coke oven plants
• Asbestos milling and manufacture of asbestos-based products
• Chlor-alkali industries
• Ferrous and non-ferrous metallurgical industries
• Soda ash production
• Manufacturing of synthetic organic chemicals
• Distilleries
• Integrated paint industries
• Processing of leather, skin, and hides
• Chemical fertilizer production
• Manufacturing of pesticides and pesticide-specific intermediates (excluding formulations)
• Petrochemical production
• Manufacturing of manmade fibers
• Processing of petrochemical-based products
• Pulp and paper industry (excluding paper from waste paper and ready pulp without bleaching)
• Sugar industry
• Construction and operation of oil and gas transportation pipelines
• Handling and storage of hazardous chemicals in isolated facilities
• Development of infrastructure such as airports, industrial estates/parks/areas, EPZs, SEZs, Biotech Parks, Leather Complexes, ports, harbors, highways, and breaking yards
• Establishment of TSDFs, CETPs, and Common Municipal Solid Waste Management Facilities (CMSWMF)
• Building construction and construction projects
• Township and area development projects

Factors in environmental impact assessment

• Project Description
  Overview of the proposed project, its location, environmental and social context, and any need for off-site investments or resettlement plans.
• Baseline Data
  Description of existing biological, physical, and socio-economic conditions of the project area before implementation.
• Environmental Impacts
  Prediction and assessment of positive and negative impacts, mitigation measures, unavoidable effects, and improvement opportunities.
• Alternatives Analysis
  Comparison of feasible alternatives based on site, technology, design, costs, local suitability, and environmental impact reduction.
• Environmental Monitoring Programme
  Measures for mitigating, monitoring, and managing impacts during construction and operation
• Consultation
  Records of stakeholder consultations, including project-affected people, NGOs, authorities, and consultants involved.
• Summary
  Concise overview of the project purpose and mitigation strategies.

Process of environmental impact assessment

The Environmental Impact Assessment (EIA) process comprises interconnected and continuous steps.

• Screening
  Evaluation of the project based on investment scale, location, type of development, and statutory clearance requirements.
• Scoping
  Identification of potential impacts, affected areas, mitigation possibilities, and monitoring requirements
• Collection of Baseline Data
  Assessment and documentation of existing environmental conditions within the study area.
• Impact Prediction
  Prediction of positive and negative impacts, considering their reversibility, irreversibility, and temporary or permanent nature, based on thorough project understanding.
• EIA Report
  Details proposed actions to prevent, minimize, or offset anticipated impacts and determines compensation for potential environmental damage or loss.
• Public Hearing
  Consultation with the public and local environmental groups residing near the project site after completion of the EIA report.
• Decision Making
  Final decision by the Impact Assessment Authority in consultation with experts, project proponents, and consultants, based on the EIA and Environmental Management Plan (EMP).
• Monitoring and Implementation
  Continuous monitoring of project phases to ensure compliance with the Environmental Management Plan.
• Environmental Impact Assessment Report
  Identification and comparison of viable project alternatives based on location and process technologies, followed by development of mitigation measures and an Environmental Management Plan for environmental improvement.
• Risk Assessment
  Inclusion of inventory analysis, hazard probability assessment, and determination of a hazard index.

Documents required for Environmental impact assessment

The EIA report, prepared as per the Terms of Reference (TOR) finalized during the Scoping stage, requires the following documents:

• General project information, including project name and location
• Details of project activities such as area distribution, water requirements, and waste generation
• Information on the use of natural resources
• Identification of hazardous or harmful substances and materials
• Assessment of air, soil, and water pollution emissions
• Evaluation of noise, vibration, light, and heat emissions
• Analysis of accident risks
• Consideration of cumulative and consequential impacts
• Details of environmentally sensitive areas near the project site
• Site or layout plan
• Documentation of installed machinery
• Proof of land ownership
• Identification proof of the authorized signatory
• Applicable quality test reports
• Evidence of mitigation measures adopted
• Proof of electricity and water connections

Additional Information – Requirement as per the 2006 Amendment

• Category A projects mandatorily require environmental clearance and therefore do not require screening.
• Category B projects must undergo screening and are classified into:
• Category B1 projects, which mandatorily require EIA.
• Category B2 projects, which do not require EIA.

In summary, Category A and Category B1 projects must undergo the complete EIA process, while Category B2 projects are exempt from EIA.