Warning: This page is an edit and testing page use by the wiki authors. It is not a content page for the Manual. Information on this page may not be accurate and should not be used as guidance in managing stormwater.

Stormwater and soil, engineered (bioretention) media, and media amendments

image bioretention
Engineered media in a bioretention practice. Image from MPCA's Flickr website.
compost image
Compost is an important component of most engineered media mixes. It is also commonly used as an amendment to improve soil properties, such as infiltration rate, fertility, and structure. Image from MPCA's Flickr website.
Information: Engineered media is manufactured from soil (sand, silt, clay) and other components (e.g. compost, iron, etc.), in specific proportions, for a specific application (e.g. green roof, bioretention, tree box). Because engineered media are widely used in bioretention practices, the term "bioretention media" is widely used. We prefer the term "engineered media" as it more accurately describes the applicability of these media.

Soil and engineered media, often referred to as bioretention media, are fundamental design characteristics of most post-construction stormwater practices. In some applications, soil or media amendments are utilized to improve soil conditions or enhance treatment effectiveness of a BMP.

This page provides links to pages that address topics related to soil, engineered media, and soil/media amendments.


This page was last modified on 26 August 2019, at 08:24.

Minnesota Pollution Control Agency | 651-296-6300, 800-657-3864 | Assistance | Web site policy