What is the log inactivation of viruses

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The transmission main from the well field to the community is 2500 ft, the velocity of flow at peak pumping capacity is 3.5 fps, water temperature is 10oC, and pH is 7.5. If free chlorine residual is applied at the well field and is 0.5 mg/L entering the distribution system, what is the log inactivation of viruses? 

Reference no: EM131002839

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