• The pollution sources
1.1. During the construction phase
• Sources of air pollutants
During construction, the jobs such as leveling, excavation, foundations, provide materials, transportation and installation of equipment ... would create a the environmental impact of air generated by the polluting factors are as follows:
• dust pollution grading operations, earthworks, land leveling.
• emissions from vehicles containing dust, SO2, CO, CO2, NOx, THC.
• noise due to construction of motor vehicles and trucks.
• Sources of water pollution
in the course of construction, because time does not last long and non-complex, only two sources could have negative effects on the environment that the country's waste water construction forces and rainwater runoff through construction grounds:
• domestic wastewater of construction workers involved. This discharge sources containing organic compounds, nitrogen, phosphorus and microorganisms.
• Stormwater runoff from construction areas sand entrainment into sewers.
• Solid waste pollution sources
in the construction phase , a large volume of solid waste generated by:
• building materials spilled as cement, bricks, sand, stone, wood, ...
• Household garbage workers work at the construction site.
the substances mentioned above also negatively impact the aquatic environment, atmosphere, soil and landscape especially areas without regular collection management.
• risks
• occupational accidents:
• Due carelessness of workers, lack of labor protection equipment, or lack of awareness strictly adhere to safety rules and labor construction workers.
• the labor accidents from the outreach work with electrical construction work such as electrical systems, and collided with power lines.
• fire incidents:
incidents of fire due to power: by carelessness during the construction and installation of equipment, resulting in the potential for electric shock and the resulting explosion is very high.
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