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2. You are designing a chlorine contact chamber to meet 3-log removal of Giardia via disinfection. You are given the following information: - Hypochlorous acid [HOCl] dose =1.80mg/L - Molecular weight [HOCl]=52.46g/mol - Temperature =25C - Kz=2.88108 - Superior baffling condition - Contact chamber lowest operating capacity =8,000 gallons - Pump capacity =125gpm a. Is this system operating at the optimal pH for disinfection? b. The required chlorine residual for your system is 0.60mg/L. What is the chlorine demand? c. Assuming you need 3-log inactivation of Giardia, what is your required contact time