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Quantifying Environmental Costs for Sustainable Pavement Management

机译:量化环境成本以实现可持续路面管理

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摘要

We quantify the effect of Ontario's provincial transportation infrastructure decisions on multipollutant exposures, impacts, and life-cycle costs. A variety of evidence shows that roadway construction and maintenance affect human health and climate change via emissions of air pollutants and greenhouse gases. With recent policy shifts, provincial transportation decision-makers are focused on the role of roadway design and maintenance on these environmental exposures; however, they lack appropriate tools to incorporate them into decisions. Here, we present a decision-making tool that quantifies the health, environmental, and economic impacts of construction, maintenance, and rehabilitation of roads and highways. We examine various pavement design and management approaches, including standard practices, and innovations to processes and materials. We estimate multipollutant emissions, including (C02, NOx, S02, PM2.5, CO). We review literature that connects these exposures to health and economic impacts directly through marginal damage estimates. Current literature estimates for the cost of emitting a single metric tonne of fine particulate matter range between $600 and $50,000 (2010 CAD) depending on the impacts considered and the cost measures used. Preliminary findings for environmental costs of emissions from new-construction of a double-lane, one-kilometre road range between $300 to $50,00 for asphalt roads and $3000 to $400,00 (2010 CAD) for concrete roads. In this research, we expand on these findings and quantify contributions of uncertainty from exposures, exposure-response, and economic impacts. These findings allow infrastructure managers to account for health-related impacts of environmental exposures, including air pollutants and greenhouse gases, and thus to design more sustainable solutions.
机译:我们量化了安大略省交通基础设施决策对多污染物暴露,影响和生命周期成本的影响。各种证据表明,道路的建设和维护会通过排放空气污染物和温室气体来影响人类健康和气候变化。随着近期政策的变化,省级交通决策者将重点放在道路设计和维护对这些环境影响的作用上。但是,他们缺乏将其纳入决策的适当工具。在这里,我们提供了一种决策工具,可以量化道路,高速公路的建设,维护和修复对健康,环境和经济的影响。我们研究了各种路面设计和管理方法,包括标准做法以及工艺和材料的创新。我们估算了多种污染物的排放,包括(CO2,NOx,SO2,PM2.5,CO)。我们回顾了通过边际损失估算直接将这些暴露与健康和经济影响联系起来的文献。当前的文献估计,排放一公吨细颗粒物质的成本在600美元至50,000美元之间(2010加元),具体取决于所考虑的影响和所使用的成本衡量标准。新建双车道,一公里道路的排放所产生的环境成本的初步调查结果为,沥青道路介于300到50美元之间,混凝土道路介于3000到400,000美元(2010加元)之间。在这项研究中,我们将对这些发现进行扩展,并对暴露,暴露响应和经济影响中不确定性的贡献进行量化。这些发现使基础架构管理者能够考虑环境暴露(包括空气污染物和温室气体)与健康相关的影响,从而设计更可持续的解决方案。

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