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|Thickness (mm)||If topsoil has been amended [[Absorbent landscapes]]
|Thickness (mm)||If topsoil has been amended [[Absorbent landscapes]]
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|Porosity (fraction)||Suggest range 0.35 – 0.4, unless otherwise tested
|Porosity (fraction)||Suggest around 0.4, unless otherwise tested.
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|Field capacity (fraction)||Rowspan=5|Will vary according to native or amended topsoil<ref> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
|Field capacity (fraction)||Rowspan=5|Will vary according to native or amended topsoil<ref> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>