Changes

[[File:Bioretention storage.png|thumb|box plot of nine documented bioretention media]]

[[File:Bioretention storage.png|thumb|box plot of nine documented bioretention media]]

Bioretention filter media may be assumed to have a storage capacity of 0.4.

Bioretention filter media may be assumed to have a storage capacity of 0.4.

 

This has been calculated as the difference between the media porosity and field capacity from a number of studies.  

This has been calculated as the difference between the media porosity and field capacity from a number of studies.  

# Marine sand: 0.51 - 0.06 = 0.45 <ref name=Liu>Liu, Ruifen, and Elizabeth Fassman-Beck. “Pore Structure and Unsaturated Hydraulic Conductivity of Engineered Media for Living Roofs and Bioretention Based on Water Retention Data.” Journal of Hydrologic Engineering 23, no. 3 (March 2018): 04017065. doi:10.1061/(ASCE)HE.1943-5584.0001621</ref>

# Marine sand: 0.51 - 0.06 = 0.45 <ref name=Liu>Liu, Ruifen, and Elizabeth Fassman-Beck. “Pore Structure and Unsaturated Hydraulic Conductivity of Engineered Media for Living Roofs and Bioretention Based on Water Retention Data.” Journal of Hydrologic Engineering 23, no. 3 (March 2018): 04017065. doi:10.1061/(ASCE)HE.1943-5584.0001621</ref>