The first chamber in a septic tank should be at least Â Â Â Â� – McqOptions

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1.	The first chamber in a septic tank should be at least Â Â Â Â Â Â Â Â Â Â Â Â Â of the total length.
A.	10 %
B.	20 %
C.	35 %
D.	50 %
Answer» E.

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