Question: ( 2 points ) If the critical point in a DO sag curve is found to be 1 8 k m downstream from the discharge

(2 points) If the critical point in a DO sag curve is found to be 18km downstream from the discharge point of untreated wastewater, would you expect the critical point to move upstream (toward the discharge point), downstream, or remain in the same place, if the wastewater is treated.
A. upstream
B. downstream
C. no change
Why?
( 2 points ) If the critical point in a DO sag

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