However, unlike the EIA Notification of 1994, the new legislation has put the onus of clearing projects on the state government depending on the size/capacity of the project. Environment Impact Assessment or EIA can be defined as the study to predict the effect of a proposed activity/project on the environment. A decision making tool, EIA compares various alternatives for a project and seeks to identify the one which represents the best combination of economic and environmental costs and benefits. Assessment of impact of any activity on environment is called Environmental Impact Assessment. This assessment can be quantified either before or after implementation of the project. So, EIA gives us the data of predicted damage to the environment by certain project.

Occur on soils, vegetation, wildlife, fisheries, water quality and especially the human population in the area as described earlier in Chapter 4. Of impact of changes in ground and surface water quality outside the project area . Cost and simultaneously the project authorities will process and obtain necessary clearances of MOEF in respect of EIA and forest area diverted. If Scheduled Tribe population is affected, the clearance of R&R plans will be obtained from the Ministry of Tribal Affairs. The DPR thus prepared will be examined in CWC and project proposal will be put up to the Technical Advisory Committee for clearance.


This knowledge helps in defining the changes required in the plan to make it a sustainable project or in case of a project that is already there, suggest remedial measures which can make the project sustainable. Institutional analysis for reorienting activity within existing administrative set up (forest dept.) and mode of payment, schedule and appraisal of CAT plan. The beneficial and adverse impacts of river valley projects have been described earlier in chapter 2. National hazardous waste information system, Indian forest cover, national ambient air quality monitoring program, national river water quality monitoring program.

eia methodology

A checklist for public health is presented into the community, environment and health services. New health problems or vector pattern that may arise due to changes in water velocities, temperature quality or other physical change factors caused by water impoundment. Air quality monitoring should be restricted to project site and at downwind direction.

Evolution of EIA 632 from an Interim Standard to a Full Standard

These were excavated well before impoundment and shifted to a museum on the top of a nearby hill coming within the reservoir . At times mineral deposits, archaeological monuments or shrines are threatened by submergence due to reservoirs. It is possible to protect the mineral wealth and monuments falling in the shoreline zones by constructing ring bunds etc. or even by exploiting the resources to the possible extent before inundation.

Fortunately, adequate legislation could be brought into force to make proper assessment of all such environmental impacts. EIA helps the decision makers to identify the likely effects at an early stage and to improve the quality of project planning and decision making. A number of projects with significant environmental and social impacts have been excluded from the mandatory public hearing process. share application account is in the nature of EIA is one of the successful policy innovations of the 20th Century for environmental conservation. Thirty-seven years ago, there was no EIA but today, it is a formal process in many countries and is currently practiced in more than 100 countries. EIA as a mandatory regulatory procedure originated in the early 1970s, with the implementation of the National Environment Policy Act in the US.

Environmental Impact Assessment

The objective of approval of TOR by the EAC is to ensure that all the relevant aspects are covered in formulation of EIA/EMP, whether the study is carried out in-house by the project proponent or by a Consultant. For grant of prior environmental clearance on stipulated terms and conditions, or rejection of the application for prior environmental clearance, together with reasons for the same. The EAC or the SEIAA, as is relevant, may also direct the applicant to re-do some of the components of the EIA study without changing the TOR or improve upon the EMP document if they are found wanting in certain respects. Applications for prior environmental clearance may be rejected by the regulatory authority concerned on the recommendation of the EAC or SEAC concerned at this stage itself. The ideal EIA methodology would be the one which accurately incorporates the environmental costs and benefits of a project within the conventional context of cost benefit analysis. The EIA notification needs to build within it an automatic withdrawal of clearance if the conditions of clearance are being violated and introduce more stringent punishment for noncompliance.

  • It was, therefore, decided by the EAC that CWC may prepare a composite EIA Manual both for irrigation and hydroelectric projects.
  • Fixing a minimum water release in terms of the percentage of flow may not satisfy this requirement due to varying cross section and bed slope in different rivers.
  • All road, construction and blasting operation, especially upstream of the reservoir, should be completed before reservoir filling is commenced so as to reduce excessive sedimentation load.
  • Assessment of impact of any activity on environment is called Environmental Impact Assessment.

…..not in the list of references/ designed the first matrix used for impact assessment of water resources projects. However, after 1990, a number of countries in developed economies adopted SEA. Some countries such as Canada and Denmark have made provision for SEA of policy, plans and programmes separately from EIA legislation and procedure. Other countries such as Czech Republic, Slovakia, etc have introduced SEA requirements through reforms in EIA legislation and in case of United Kingdom through environmental appraisal. While in New Zealand and Australia, it is a part of resource management or biodiversity conservation regimes. The adoption of SEA is likely to grow significantly in the coming years especially with directives by European Union and Protocol to the UNECE Convention on Transboundary EIA by signatory countries .

Standards quick search

This process extends the aims and principles of EIA upstream in the decision-making process, beyond the project level and when major alternatives are still open. SEA represents a proactive approach to integrating environmental considerations into the higher levels of decision-making. &R) of these families is undoubtedly a very delicate and sensitive issue. By and large, people have a deep attachment to their land, tradition, culture and way of life and do not want to part with them. However, the water resources planners have been aware of these issues and various measures have been taken for R&R of the affected people, even in the earlier river valley projects. The consideration of alternatives locations/sites is essential in the planning of any project and the careful selection of a suitable site is fundamental to minimizing the environmental impacts of a project.

  • Additionally, whatever data the relevant state groundwater boards and water supply authorities may have collected should also be consulted.
  • The Department of Environment of the Government of India has issued detailed guidelines for the diversion of forest land for non-forest uses.
  • It has been enacted by making an amendment in the Environment Protection Act 1986.
  • New health problems or vector pattern that may arise due to changes in water velocities, temperature quality or other physical change factors caused by water impoundment.

Inundation mapping should extend to a point d/s where the dam break flood would no longer pose a risk to life. An estimation of the magnitude of the dam break flood hydrographs resulting from hypothetical dam failure occurring with the reservoir at normal storage elevation and maximum storage elevation. Plan of the downstream in case of dam break should be marked on a detailed contour plan of the downstream area to obtain the extent of inundation. It is, therefore, also required that the effect of various treatments on controlling soil erosion are quantitatively known.

The description should include its location, the design and size of the development and the area of land during construction and operation. 10 km radius from project boundary (including submergence, dam site, powerhouse, tailrace, etc.) for identifying sensitive location. Area of influence for the project should be variable for each environmental component and firmed up at scoping stage.