3. Sewage with a fecal coliform bacteria count of 8x 10° CFUS / 100 mL is leaking into a river at a rate of 0.1 m/s. Upstream of the leak, the river flow is 100 m/s and the fecal coliform bacteria count is 40 CFUS / 100 ml. The average velocity in the river is given as 0.25 m /s and the bacteria die-off rate is given as 2.4 /d. a. Write the mass balance equation for fecal coliform bacteria at the discharge point of the and downstream of the discharge. • See pdf O Not sure how to proceed b. Determine the fecal coliform concentration at a public beach 10 km downstream of the leak. CFUS / 100 ml e Will the New York State fecal coliform bathing standard of 200 CFUS /100 ml be met? O Yes O No Check

3. Sewage with a fecal coliform bacteria count of 8x 10° CFUS / 100 mL is leaking into a river at a rate of 0.1 m/s. Upstream of the leak, the river flow is 100 m/s and the fecal coliform bacteria count is 40 CFUS / 100 ml. The average velocity in the river is given as 0.25 m /s and the bacteria die-off rate is given as 2.4 /d. a. Write the mass balance equation for fecal coliform bacteria at the discharge point of the and downstream of the discharge. • See pdf O Not sure how to proceed b. Determine the fecal coliform concentration at a public beach 10 km downstream of the leak. CFUS / 100 ml e Will the New York State fecal coliform bathing standard of 200 CFUS /100 ml be met? O Yes O No Check

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

Question

3. Sewage with a fecal coliform bacteria count of 8x105 CFUS / 100 mL is leaking into a river at a rate of 0.1 m/s. Upstream of the leak, the river flow is 100 m/s and the fecal coliform bacteria count is 40 CFUS / 100 mL. The average velocity in the river is given as 0.25 m /s and the bacteria die-off rate is given as
2.4 /d.
a. Write the mass balance equation for fecal coliform bacteria at the discharge point of the and downstream of the discharge.
O See pdf
O Not sure how to proceed
b. Determine the fecal coliform concentration at a public beach 10 km downstream of the leak.
CFUS / 100 mL
c. Will the New York State fecal coliform bathing standard of 200 CFUS /100 mL be met?
O Yes
O No
Check

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