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mLine 90:
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→Figures and drawings
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| Layer order (filter, [[reservoir aggregates|reservoir]], [[choker course]], [[geotextiles]] (if using)) and specifications (gradation, hydraulic conductivity, void space)
| Layer order (filter, [[reservoir aggregate|reservoir]], [[choker course]], [[geotextiles]] (if using)) and specifications (gradation, hydraulic conductivity, void space)
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| Depth
| Depth