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The digested sludge from septic tanks, is removed after a maximum period of__________________?
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The digested sludge from septic tanks, is removed after a maximum period of__________________?
A. 3 years
B. 3.5 years
C. 4 years
D. 5 years
Correct Answer:
3 years
✔
Last Updated:
August 25, 2020