领先服务线路的识别:战略和方法的审查
Kelsey Hensley1, Valerie Bosscher2, Simoni Triantafyllidou3
1EPA Region 3, Applied Science and Quality Assurance Branch, U.S. Environmental Protection Agency, Philadelphia, Pennsylvania, USA.
概括
确定主要服务线 (LSL) 对公共卫生至关重要. 本综述比较了定位LSL的方法,为公用事业公司提供了一步一步的方法,以有效地确定未知的服务线材料.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 水质工程 水质工程
背景情况:
- 服务线 (LSL) 是饮用水中污染的主要来源.
- 美国几个州约有16%的服务线材料仍然未知,可能会带来暴露风险.
- 由于健康问题和监管压力,需要有效和经济有效的方法来识别LSL.
研究的目的:
- 审查和比较当前的行业方法来识别领先服务线路 (LSL) 的位置.
- 提供基于成本,准确性和影响的不同LSL识别技术的定性评估.
- 为公用事业公司提出一个实用的,逐步的方法来识别未知的服务线材料.
主要方法:
- 对LSL识别现有的文献和行业实践的审查.
- 方法的定性比较,包括记录选,视觉检查,取水样,挖掘和预测数据分析.
- 关于LSL材料识别的拟议阶段性战略的制定.
主要成果:
- 目前的LSL识别方法在成本,准确性和侵入性方面存在很大差异.
- 没有一种单一的方法是普遍最佳的; 方法的组合往往是必要的.
- 预测性数据分析显示,对优先考虑进一步调查的领域有希望.
结论:
- 有效的LSL识别需要基于公用事业特定约束和需求的量身定制方法.
- 一个系统的,多方法的策略可以加快找到和取代LSL的过程.
- 实施逐步识别过程对于减轻饮用水中的暴露风险至关重要.
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