1997年3月，环境保护局（EPA）提出了一项精简计划，以实施基于绩效的测量系统（PBMS），并加快批准《清洁水法》和《安全饮用水法》规定的合规监测方法。最初，PBMS将仅限于化学方法，不允许修改样品收集、装运或储存要求。PBMS将基于参考方法中为每种分析物规定的性能标准，并将由三个主要部分组成:继续当前替代试验程序程序以批准方法修改的程序；批准新方法的程序；并且，在未经EPA事先批准的情况下，增加了修改参考方法的灵活性。本文描述了这三个组成部分，并讨论了公众对这一新举措的反应。

In March 1997, the Environmental Protection Agency (EPA) proposed a Streamlining initiative to implement a performance-based measurement system (PBMS) and expedite the approval of compliance monitoring methods under the Clean Water Act and the Safe Drinking Water Act. Initially, PBMS would be limited to chemistry methods and would not allow modifications to sample collection, shipment or storage requirements. The PBMS would be based on performance criteria specified for each analyte within the context of a reference method, and would consist of three major components: procedures to continue the current alternate test procedure program for approving method modifications; procedures to approve new methods; and, increased flexibility to modify reference methods without prior EPA approval. This paper describes each of the three components and discusses public reaction to this new initiative.