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'The Importance of Being Representative' or Setting Reasonable Background values for CCR Monitoring

机译:“代表性的重要性”或为CCR监测设置合理的背景值

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The basis of groundwater compliance monitoring under United States Environmental Protection Agency’s (USEPA's) Coal Combustion Residual (CCR) rule is statistical comparison of groundwater sample data between compliance and background wells. For this to be meaningful, background samples must be representative of expected groundwater conditions beneath a unit in the absence of a release from the unit. If the background is not representative, then the statistical methods listed under the CCR rule are meaningless and compliance (or exceedance) cannot be proven using these statistical methods.
机译:美国环境保护局(USEPA)煤炭燃烧残余(CCR)规则的地下水依从性监测的基础是遵守与背景井之间地下水样本数据的统计比较。为此有意义,背景样本必须代表在没有从装置释放的单元下面的预期地下水条件。如果背景不是代表性,则在CCR规则下列出的统计方法是毫无意义的,并且无法使用这些统计方法证明符合性(或超标)。

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