EIA’s

Environmental Impact Assessments

EIA’s

Required in many countries before any kind of development takes place

Determines The type and degree of impact on the

environment Potential modifications to the developments

design The feasibility of introducing these modifications

This information is needed before governments will approve the development

Types of developments that require EIAs

Resource exploitation Mining, forestry, smelting

Transport Roads, rail, airport

Establishing industry Factories, processing plants, oil refineries

Urban development Buildings, subdivisions, infrastructure

(electricity, water, sewer) Waste disposal

Investigation

Conducted by government approved and independent environmental consulting firms that are hired by the company proposing the development.

Problem with EIAs

Governments are responsible for their implementation

The issue may become politically charged where human concerns and interests override those of the environment.

This makes the process open for corruption.

What is included in an EIA?

An EIA must establish the conditions of the environment before the development has a chance to change things.

Step 1

Baseline study Establishes the natural conditions

present in the ecosystem before the proposed development is constructed.

Step 1

The following variables are established All aspects of the biosphere Direct methods

Known pollutants Nitrates from sewer Noise from traffic

Indirect Methods Biodiversity

Step 1

Sampling methodology Frequency Number of samples Location and distribution of the sampling

Purpose is that establish a clear picture of initial conditions and show how the environment will change

Step 1

Environmental Considerations Establish what kind of features will be

incorporated into the development to minimize the impact of the development.

Waste disposal How will waste generated during the

construction and use phase of the project be disposed of?

The baseline study is normally the most intensive aspect is an EIA as its scope is larger in area and types of samples analyzed than future sampling programs which are normally more specific as the known impact of the development is clearer

Step 2

Ongoing monitoring during construction and use of the development plan

Used to prove that the development is not impacting the environment

Step 3

Site remediation Often forgotten when designing a

new development is what will happen to the site once the development has outlived its use.

Step 3

Some EIAs will be required to suggest how the development will be reclaimed and returned to its natural habitat. Eg. mining

Step 3

If this step does not meet the government requirement, the project may still be refused even though steps 1 and 2 have been met.