Changes

1 part sand [[Bioretention: Filter media#Organic components|organic soil components]] and [[Bioretention: Filter media#Additives|additives]]

1 part sand [[Bioretention: Filter media#Organic components|organic soil components]] and [[Bioretention: Filter media#Additives|additives]]

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|This mixture may be assumed to have a porosity of [[0.4 unless demonstrated otherwise|Bioretention media storage]]

|This mixture may be assumed to have a porosity of [[Bioretention media storage|0.4 unless demonstrated otherwise]]

|This mixture may be assumed to have a porosity of 0.35 unless demonstrated otherwise

|This mixture may be assumed to have a porosity of 0.35 unless demonstrated otherwise

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