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Line 19: |
| |Proportions | | |Proportions |
| | | | | |
| *70 - 80 % coarse [[sand]] | | *3 parts[[sand]] |
| *20 - 30 % [[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]] |
| | | | | |
| *70 - 80 % coarse [[sand]] | | *3 parts [[sand]] |
| *10 - 15 % [[topsoil]] | | *2 parts [[topsoil]] |
| *10 - 15 % [[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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| |
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