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