A.temperature is an important factor
B.the maximum velocity of flow is 1 ft/s
C.the detention period should be at least 30 min
D.there should be a 5 to 1 ration of length to depth
A.temperature is an important factor
B.the maximum velocity of flow is 1 ft/s
C.the detention period should be at least 30 min
D.there should be a 5 to 1 ration of length to depth