Translations:Versickerung und Retention/39/en

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DRAINMAX Tunnel system

1. DRAINMAX Tunnel 6. Topsoil
2. Tunnel side and top backfill 7. Sedimentation/filter chamber
3. Geotextile 8. Throttle chamber
4. Enclosed sheet basin made from EPDM and geotextile 9. Discharge throttle
5. Tunnel overburden 10. Rainwater inlet
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