本powerpoint演示文稿首先简要概述了受直接影响的地下水（GWUDI）。当前微观颗粒分析（MPA） 并介绍了其局限性，以及 GWUDI生物指标的再评价 评估；和 实验室和河岸过滤（RBF）现场演示 修订版MPA。包括表格、数字。

This powerpoint presentation begins by providing a brief overview of groundwater under direct influence (GWUDI). Current Microscopic Particulate Analysis (MPA) and limitations are presented, along with re-evaluation of bioindicators for GWUDI assessments; and, laboratory and riverbank filtration (RBF) field demonstration of revised MPA. Includes tables, figures.