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1. Excavation
- Backfill cover (A) may range from a minimum of 6" to a maximum of 30".
- Sidewall and end wall allowance (B) should be 18" to 24"
- Bedding (C) should be a well compacted sand/pea gravel mixture: 6" minimum in soil terrain, 12" minimum in rock terrain.
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2. Lid and Manhole Extension
- For proper fit, install the lid and/or manhole extension before you put water in the tank and backfill.
- Please note the direction of flow - the inlet is higher than the outlet.
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3. Inlet/Outlet Connections
- Connect inlet/outlet fittings to incoming/outgoing piping.
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4. Backfilling Exterior and Filling with Water
- CAUTION: Start filling the tank with water when you begin to backfill, keeping the water level even with the backfill
level as you go.
- Backfill in 12" maximum layers with a well compacted sand/gravel mixture. ALWAYS COMPACT ENDS FIRST.
- Tamp and compact backfill under inlet and outlet pipe.
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5. Backfilling the Top of Tank
- Once the tank is filled with water, backfill to the surrounding level to a maximum of 30".
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General Notes
- Do not install tank in water-saturated clay or in high water table.
- Do not install tank across the path of vehicles or heavy equipment.
- The tanks are designed for below ground use only.
- DO NOT USE A SEPTIC TANK FOR DRINKING WATER.
- Immediately refill the tank with water after pumping.
- To prevent possible tank collapse, do not use the septic tank (with the exception of the 300 and 500 gallon spheres) as
a holding tank or pump chamber.
- It is important to contact your local or state sanitarian regarding proper installation of sanitary tee assemblies.
Failure to comply with Kentucky Tank's installation procedures and general notes will void the warranty.
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