Propose a design flow and equalization tank volume based on the historical data if you can justify a lower design flow than that calculated following OBC values. Append your calculations or graphical interpretation of the data. Notes: a) The water meter was read on weekdays, so flows for weekend days were averaged with Monday flows (as expanded in the excel file). b) Assume no losses due to evaporation. c) Assume no exfiltration/infiltration into the sewer system. Hint: Assume a design flow, equate the balancing tank accumulation to zero when negative, adjust the design flow to achieve a reasonable balancing tank volume (