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V1 Media, the publisher of Informed Infrastructure Magazine, is an approved AIA continuing-education provider. AIA-approved courses are a valid form of Learning Units (LU) and Professional Development Hours (PDH) for the Architecture, Engineering and Construction (AEC) industries via self-learning courses in all states.

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Evaluation of Media-Based Stormwater Filtration Systems

Course Information

There are an increasing number of commercial and structural media-based filtration systems available to engineers and regulators to meet the need for effective and space-efficient stormwater treatment. As part of the due-diligence process, these individuals must understand and evaluate the design, functionality and ongoing operational requirements of the systems. This paper addresses fundamental media filtration evaluation criteria that, when taken together, provide a framework for comparing and contrasting different stormwater filtration systems. Consideration of these criteria is recommended prior to specifying or approving a system.


By James H. Lenhart, P.E., D.WRE; Vaikko Allen; and Jeremy Gray

Learning Objectives

At the conclusion of this article, the reader should be able to:

  1. Understand media-based stormwater filtration system hydraulics
  2. Recognize media types and hydraulics
  3. Understand stormwater filtration system design


This Professional Development Section provides an opportunity to earn continuing-education credit without cost. Take a look at the learning objectives, read this sponsored article, and complete the quiz at

Answers to the quiz will automatically be calculated. If eight or more of the questions are answered correctly, participants can immediately download a certificate of completion and be awarded 1.0 professional-development hours (equivalent to 1.0 continuing-education units in most states).

V1 Media is an approved provider of the American Institute of Architects’ Continuing Education System (AIA/CES). It is up to each licensee to determine if this credit meets their governing board’s registration requirements.

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