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首页> 外文期刊>International Journal of Soil, Sediment and Water >Updated Massachusetts Indoor Air Quality Threshold Values: A Case Study
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Updated Massachusetts Indoor Air Quality Threshold Values: A Case Study

机译：马萨诸塞州更新的室内空气质量阈值：一个案例研究

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A sudden heating oil release occurred below a concrete slab of a residence in Massachusetts. The oil entered an open sump in the basement and migrated to a nearby stream. Remediation included deployment of absorbent booms, limited soil excavation, and in-situ treatment with hydrogen peroxide. Soil, sediment, groundwater, and indoor air samples were analyzed to delineate the extent of contamination, verify that remedial efforts were successful, and determine if a vapor intrusion pathway existed. Indoor air samples were collected on three events: at the time of release, after remedial activities, and four months later. Indoor air analytical results were compared to the new draft Threshold Values published by the MassDEP Indoor Air Working Group (June 2008). In each sampling event, various compounds were detected above the applicable Threshold Values. As suggested by the MassDEP, multiple lines of evidence were investigated to determine whether the exceedances were attributable to the release. The presence of mothballs, the construction and operation of the home heating system, analytical evidence of a potential historical release, and soil and groundwater analytical data were used as lines of evidence that a vapor intrusion pathway did not exist.
机译：在马萨诸塞州某住宅的混凝土板下突然发生了取暖用油的释放。油进入地下室的一个开放式油底壳，并迁移到附近的小溪中。补救措施包括部署吸水臂，限制土壤开挖以及使用过氧化氢进行原位处理。对土壤，沉积物，地下水和室内空气样本进行了分析，以确定污染程度，验证补救工作是否成功，并确定是否存在蒸气入侵途径。在以下三个事件中收集了室内空气样本：释放时，补救活动后以及四个月后。将室内空气分析结果与MassDEP室内空气工作组（2008年6月）发布的新阈值草稿进行了比较。在每个采样事件中，检测到的化合物均超过了适用的阈值。正如MassDEP所建议的那样，已对多条证据进行了调查，以确定超标是否可归因于释放。樟脑丸的存在，家庭供暖系统的构建和运行，潜在历史释放的分析证据以及土壤和地下水的分析数据被用作不存在蒸汽侵入途径的证据。

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