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Installation Procedure for H-20, HS -20 <br />Unloading Instructions: <br />❑ Upon delivery, inspect Fuji Clean tank, both outside and inside for possible damage incurred during <br />transport. If you find damage, or have a question, please contact your distributor immediately. <br />❑ Required Preconditions for this Installation Technique <br />✓ Seasonal high groundwater depth must be less than 3'3" (1000mm). <br />✓ Total height from ground level to adapter ring should be 24 inches. <br />✓ Bearing power of soil must be 8.7 PSI or greater. <br />❑ Step 1: Excavation ,.- -- <br />Prepare excavation to be Fuji Clean <br />treatment system dimensions as <br />listed on page 7 and concrete slab <br />dimensions on page 22. <br />Important Note: Total height from ground level to adapter ring should be 24 inches. <br />Make sure excavation of slope should be 2:1 as a zone of influence. If slope will be gentle due <br />to weak foundation, install landslide protection wall. <br />❑ Step 2: Compact stone base <br />16 <br />