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3 parts [[sand]]<br>
3 parts [[sand]]<br>
2 parts [[topsoil]]<br>
2 parts [[topsoil]]<br>
1 part sand [[Bioretention: Filter media#Organic components|organic soil components]] and [[Bioretention: Filter media#Additives|additives]]
1 part [[Bioretention: Filter media#Organic components|organic soil components]] and [[Bioretention: Filter media#Additives|additives]]
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