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**The exposed tops of all wells should be fitted with lockable caps.
**The exposed tops of all wells should be fitted with lockable caps.
*Non-perforated pipes should be used for conveyance to and away from the facility, including overflow.
*Non-perforated pipes should be used for conveyance to and away from the facility, including overflow.
**To function correctly, overflow pipes must be larger in diameter than inlet pipes.
**To function correctly, the capacity of the overflow pipes must be greater than the inlet(s).
[[Category:Materials]]
[[Category:Materials]]