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*10 - 15 % [[Bioretention: Filter media#Organic components|organic soil components]] and [[Bioretention: Filter media#Additives|Additives]]
*10 - 15 % [[Bioretention: Filter media#Organic components|organic soil components]] and [[Bioretention: Filter media#Additives|Additives]]
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*70 - 80% coarse sand
*70 - 80 % coarse sand
*20 - 30% organic soil components and additives
*20 - 30 % organic soil components and additives
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