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				| 1. | Calculate the SAC resin required for the following data. It should be noted that prior to the SAC, a WAC system is present.M Alkalinity: 100 ppm as CaCO3P Alkalinity: 100 ppm as CaCO3EMA: 50 ppm as CaCO3Capacity: 57 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs | 
| A. | 4.5 m3 | 
| B. | 6.9 m3 | 
| C. | 5.7 m3 | 
| D. | 7.5 m3 | 
| Answer» C. 5.7 m3 | |