PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

Soil Erosion and Water Quality: The Contractor shall ensure that earth and stone do
not silt up existing irrigation/drainage systems. The Contractor shall take suitable
measures to prevent direct discharge of polluted waters from construction activity
into lakes/rivers/irrigation channels.
The Contractor shall minimize exposure of soil types susceptible to wind and water
erosion. The Contractor shall control run-off and erosion through proper drainage
channels and structures.
Soil compaction.
The Contractor shall restrict traffic movements and use low ground pressure
machines. The Contractor shall preserve topsoil to be replaced after completion of
construction activity. The Contractor shall avoid wet soils as far as possible.
Social disruption.
The Contractor shall minimize interruptions to utility services through proper
planning and scheduling of activities. The Contractor shall provide temporary roads
and diversions as may be necessary for smooth flow of traffic and people.
Dust/air pollution.
The Contractor shall provide effective dust control through sprinkling/washing of
construction sites and access roads. The Contractor shall cover/water stockpiles and
storage areas to prevent dust pollution. The Contractor shall cover trucks
transporting construction materials to minimize spills. The Contractor shall have a
preventive maintenance programme for construction equipment and vehicles to
meet emission standards. Oil shall not be used to control dust.
Noise Pollution: The Contractor shall normally undertake construction work during
daytime only (between 7.30 to 18.00 hrs.) and when authorised to work beyond
these hours adopt suitable noise control methods during such works. The Contractor
shall maintain machines and trucks to keep them with low noise. The Contractor
shall install sound barriers and plant tree as appropriate during construction. The
Contractor shall monitor the level of noise near the construction site, factory sites
and sensitive areas with the following frequency.
a) During construction period : 12 times a year each time including day and night.
b) During commissioning period : 4 times adhoc monitoring
GTS : General Technical Specification. Page 24