Q.

The rate of accumulation of sludge in septic tanks is recommended as

A. 30 litres/person/year
B. 25 litres/person/year
C. 30 litres/person/month
D. 25 litres/person/month
Answer» A. 30 litres/person/year
824
0
Do you find this helpful?
7

Discussion

No comments yet