Changes

===Materials===

<h4>Waterproofing</h4>

===Overview===

<p>Non-infiltrating bioretention planters are often fitted into tight spaces within highly urbanized contexts. In these cases the cell may be constructed of concrete. This can be further waterproofed/have added resiliency from the application of a liquid sealant. </p>

    <p>Over subsurface infrastructure, soils prone to subsidence, or pollution hotspots, it may be necessary to prevent all infiltration. These BMPs can also be squeezed into tight urban spaces, adjacent to buildings and within the usual setbacks required for infiltrating facilities.</p>

In other contexts a membrane liner may be used.  

{{:Underdrain}}

{{:Biomedia}}

{{:Bioretention: Plant list}}

<ol>

<li>Non-infiltrating bioretention planters are often fitted into tight spaces within highly urbanized contexts. In these cases the cell may be constructed of concrete. This can be further waterproofed/have added resiliency from the application of a liquid sealant. Alternatively, a [[liner]] may be used.</li>

<li>[[Underdrain]]</li>

<li>[[Biomedia]]</li>

<li>[[Bioretention: Planting plans|Planting considerations]] and [[Bioretention: Plant list| Recommended species]]</li>