Page 32 - GRIHA Manual Volume II - Introduction to National Rating System
P. 32
24 GrIha Manual: Volume 2



Barricade the areas where construction activities will be carried out so as to protect the remainder
of the site from harm/damage. Proper construction planning should be carried out to ensure
minimum disruption to site. Pre-designated areas for storage of materials, vehicle access, and so on,
should be planned.

Step 2
Appraisal 2.3.3 and 2.3.4 requires the project to follow staging and spill prevention plan and to put
in place an erosion and sedimentation plan.

Staging areas
Staging is dividing a construction area into two or more areas to minimize the area of soil that will
be exposed at any given time. Staging should be done to separate undisturbed land from land
disturbed by construction activity and material storage. Measures will be followed for collecting
drainage water run-off from construction areas and material storage sites; diverting water flow away
from such polluted areas, so that pollutants do not mix with storm water run-off from undisturbed
areas. Temporary drainage channels and perimeter dike/swale will be constructed to carry the
pollutant-laden water directly to the treatment device or facility (municipal sewer line). The plan
shall indicate how the above is accomplished on-site, well in advance of the commencing of the
construction activity.

Spill prevention and control

Spill prevention and control plans should be made, clearly stating measures to stop the source of
the spill, to contain the spill, to dispose of the contaminated material and hazardous wastes, and
stating designation of personnel trained to prevent and control spills. Hazardous wastes include
pesticides, paints, cleaners, and petroleum products.

Erosion and sedimentation control
There are two types of soil erosion control.
# Temporary controls – These measures provide cover to the soil for a short period of time, till the
permanent measures are adopted. These are usually applicable during construction.
# Permanent controls – These measures are incorporated on soil, when activities that disturb the soil
are over. These measures could be applicable post construction in the proposed landscape plan.

Control measures
temporary seeding
This is carried out to reduce erosion and sedimentation from disturbed areas that will not be
stabilized for long period and where permanent plant growth is not appropriate. Temporary
seeding means growing vegetative cover for a short period of time on disturbed site areas that are
prone to soil erosion. Fast growing grasses are used in this system whose root systems hold the soil
together so that they are not carried away by storm water run-off and wind. Temporary seeding also
helps in reducing the problem of dust from bare soil due to construction. Temporary seeding should
be performed on areas which have been disturbed during construction and which are likely to be
disturbed after a few weeks. For this time gap, the topsoil should be preserved from erosion through
temporary measures like temporary seeding.
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