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首页> 外文期刊>Ground Water Monitoring & Remediation >Observed Spatial And Temporal Distributions Of Cvocs At Colorado And New York Vaporintrusion Sites
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Observed Spatial And Temporal Distributions Of Cvocs At Colorado And New York Vaporintrusion Sites

机译：在科罗拉多州和纽约州的蒸汽入侵现场观察到的杂草的时空分布

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摘要

The vapor intrusion impacts associated with the presence of chlorinated volatile organic contaminant plumes in the ground water beneath residential areas in Colorado and New York have been the subject of extensive site investigations and structure sampling efforts. Large data sets of ground water and indoor air monitoring data collected over a decade-long monitoring program at the Redfield, Colorado, site and monthly ground water and structure monitoring data collected over a 19-month period from structures in New York State are analyzed to illustrate the temporal and spatial distributions in the concentration of volatile organic compounds that one may encounter when evaluating the potential for exposures due to vapor intrusion. The analysis of these data demonstrates that although the areal extent of structures impacted by vapor intrusion mirrors the areal extent of chlorinated volatile organic compounds in the ground water, not all structures above the plume will be impacted. It also highlights the fact that measured concentrations of volatile organic compounds in the indoor air and subslab vapor can vary considerably from month to month and season to season. Sampling results from any one location at any given point in time cannot be expected to represent the range of conditions that may exist at neighboring locations or at other times. Recognition of this variability is important when designing sampling plans and risk management programs to address the vapor intrusion pathway.
机译：与科罗拉多州和纽约州居民区下方的地下水中存在氯化挥发性有机污染物羽流相关的蒸汽入侵影响已成为广泛的现场调查和结构采样工作的主题。分析了在科罗拉多州雷德菲尔德进行了长达十年的监测计划收集的大型地下水和室内空气监测数据集，并分析了在19个月内从纽约州的建筑物收集的每月地下水和建筑物监测数据，以举例说明了在评估由于蒸气入侵而引起的潜在暴露时，可能遇到的挥发性有机化合物浓度的时间和空间分布。对这些数据的分析表明，尽管受蒸汽入侵影响的结构的面积反映了地下水中氯化挥发性有机化合物的面积，但并非所有羽状结构都将受到影响。它还强调了这样一个事实，即室内空气和亚板坯蒸气中挥发性有机化合物的测量浓度在每个月，每个季节都可能有很大差异。不能期望在任何给定时间点从任何一个位置进行的采样结果代表相邻位置或其他时间可能存在的条件范围。在设计采样计划和风险管理程序以解决蒸气侵入途径时，认识到这种变化性很重要。

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