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首页> 外文期刊>Journal of Construction Research >COST ANALYSIS METHODOLOGY FOR ADVANCED TREATMENT OF STORMWATER: THE LOS ANGELES CASE
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COST ANALYSIS METHODOLOGY FOR ADVANCED TREATMENT OF STORMWATER: THE LOS ANGELES CASE

机译：大型治疗的成本分析方法论：洛杉矶案例

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摘要

Cities in the United States can expect to be affected by proposed stringent stormwa-ter treatment plans and standards set to be triggered by existing Federal policy-making requirements. In Los Angeles, these standards require three levels of treatment of all stormwater before it is discharged into a public body of water. This work presents a methodology for conceptual cost budgeting for these new required treatments, and describes methodologies and cost modeling tools needed for assessment of city and regional economic impacts associated with construction and operation of these plants. The research is case-study-based, and presents nine different cost analysis scenarios based on different strategies for determination of rainfall, locations of plants, and size of plants. The cost and size of the new collection and treatment facilities increases substantially if they are designed to accommodate a larger share of expected annual rain events. It will cost about six times more to build a system that can treat storm flows from 97% of the region's annual average storm days than it would to build to a 70% standard. This additional cost achieves about nine additional days of storm flow coverage. In addition, if stormwater treatment facilities are financed locally and constructed over a twenty-year period, most communities in the greater Los Angeles area would experience very significant employment and net economic losses.
机译：预计美国的城市将受到拟议的严格的雨水处理计划和标准的影响，这些计划和标准将由现有的联邦政策制定要求触发。在洛杉矶，这些标准要求对所有雨水进行三级处理，然后再将其排入公共水域。这项工作为这些新的所需处理方法提供了用于概念成本预算的方法，并描述了评估与这些工厂的建设和运营相关的城市和区域经济影响所需的方法和成本建模工具。该研究是基于案例研究的，并基于确定降雨，植物位置和植物大小的不同策略，提出了九种不同的成本分析方案。如果新的收集和处理设施旨在容纳更多的预期年度降雨事件，则其成本和规模将大大增加。建立一个能够处理该地区每年平均风暴天数的97％的风暴流的系统的成本，要比建立一个70％的标准所需的成本高出大约六倍。这笔额外费用使风暴流量的覆盖范围增加了大约九天。此外，如果雨水处理设施由当地供资并在20年内建成，那么大洛杉矶地区的大多数社区将遭受非常可观的就业和净经济损失。

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