Fuzhou World Bank Financed Projects Nanjiang Binlu, Phase-ii project of the Third Ring Road and Kuiqi Bridge environmental impact report
Analysis on emission of major pollutants
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- 2.1.12.2Analysis of pollution source during operation
- 2.1.13Noise
- 2.1.13.2Analysis on noise source strength during operation
Analysis on emission of major pollutants2.1.12Vehicle emission2.1.12.1Analysis of pollution source during constructionThe generation sources resulting in atmospheric pollution during construction include: construction excavation and transport vehicles, rising dust resulted from the traveling construction machinery; handling, transportation and stacking of building materials (cement, lime, sandstone) as well as rising and falling of dredged spoil during its stacking and transportation; exhaust from all construction machines and vehicles. Of all these, dusts will have major impact on environmental air. 2.1.12.2Analysis of pollution source during operationThe emission factor of a single vehicle shall accord with the state standard. For light vehicles, 《Limited Emission Value and Measuring Method of the Light-duty Vehicle (Ⅱ)》(GB18352.2-2001) and 《Limited Emission Value and Measuring Method of the Automotive Compression Ignition Engine》(GB17691-2001) shall be adopted. For second period and heavy vehicle, the form for phase II of 《Limited Emission Value and Measuring Method of the Automotive Compression Ignition Engine》(GB17691-2001) shall be adopted to check the requirements of emission limits. For calculation of motor vehicle emission, see Table 2.8-1 and 2.8-2. Table 2.8-1 Emission limits of pollutants from light vehicles Unit: g/km·vehicle
Note: Nitric oxides are expressed as equivalence of nitrogen dioxide (NO2). Table 2.8-2 Emission limits of pollutants from heavy vehicles Unit: g/km·vehicle
Note: Nitric oxides are expressed as equivalence of nitrogen dioxide (NO2). Based on the traffic flow of various types of vehicle in each road section and parameters such as emission factors of emission of various types of vehicles, the emission source strength of motor vehicles during rush hours in each road section may be calculated with the following formula: 
Wherein:
Qj - emission source strength of the gaseous pollutant of class J, g/(s.km) ; Ai - traffic per hour of type i vehicle in year forecast; Eij - emission factor of single vehicle of class J pollutant of type i vehicle in year forecast, g/(vehicle·km). The emission source strength of the roads and the bridge has been calculated as listed in Table 2.8-3 and 2.8-7. Table 2.8-3 Emission source strength of emission of motor vehicles in major road sections of Nanjiang Binlu during rush hours (unit: g/km·s)
Table 2.8-4 Emission source strength of emission of motor vehicles in major road sections of Nanjiang Binlu with daily mean traffic (unit: g/km·s)
Table 2.8-5 Emission source strength of emission of motor vehicles in major road sections of Phase-II Project of the Third Ring Road during rush hours (unit: g/km·s)
Table 2.8-6 Emission source strength of emission of motor vehicles in major road sections of Phase-II Project of the Third Ring Road with daily mean traffic (unit: g/km·s)
Table 2.8-7 Emission source strength of emission of motor vehicles at Kuiqi Bridge during rush hours (unit: g/km·s)
Note: Nitric oxides are expressed as equivalence of nitrogen dioxide (NO2). 2.1.13Noise2.1.13.1Analysis on noise source strength during constructionDuring construction of Fuzhou Nanjiang Binlu, Phase-II Project of the Third Ring Road and Kuiqi Bridge, the noise sources include mainly various kinds of engineering construction machines, asphalt mixers and concrete mixers. Noise level values generated by construction machines lie between 81～90dB typically. And those by mixers between 84～90dB. 2.1.13.2Analysis on noise source strength during operationAfter putting into operation of Phase-II Project of the Third Ring Road, Nanjiang Binlu and Kuiqi Bridge, noise sources will include mainly the motor vehicles traveling on road surface. It consists of mainly engine noise, exhaust noise, body vibration noise, transmission gear noise and braking noise, among which the engine noise is the major one. As indicated by domestic research, the relation between equivalent level power A and vehicle speed of various types of motor vehicles during driving in China is shown in Table 2.8-8.
Note: Applicable for vehicle speed from 20～80Km/h. According to the attenuation law of point sound source in free sound field, the noise level of various types of vehicles at a distance of 15m is calculated by the following formula: Leq=LWA-20logr-8 The results listed in Table 2.8-9.
Note: Height of noise source: 1.0m for large and medium vehicles; 0.6m for small vehicles and motorcycles. Directory: curated curated -> Concept stage curated -> Concept stage curated -> Republic of Côte d'Ivoire Urbanization Review curated -> Report No: aus11011 Central America curated -> Report No. 94474-pk fiscal Disaster Risk Assessment Options for Consideration curated -> Environmental and Social Management Framework for the Costa Rica Telecommunications Sector Modernization Project curated -> Environment Impact Assessment For Jiangxi Shangrao Sanqingshan Airport Beijing Guohuantiandi Environmental Technology Development Center. Ltd. Oct. 2012 Content curated -> Growth through Innovation An Industrial Strategy for Shanghai By Shahid Yusuf Kaoru Nabeshima April 22nd, 2009 curated -> Report No: 70178. People's Republic of China Download 3.93 Mb. Share with your friends:
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