The composition of a district of 30 km2 size is 60% residential area, 25% commercial zone, and 15% industrial zone. Twenty percent of the commercial zone is estimated to be covered by buildings. The residential section has a density of 10,000 persons/km2 and the industrial zone of 50,000 persons/km2. Determine the peak rate of flow. Assume the following parameters:

1. Domestic consumption = 300 liters/person per day

2. Commercial consumption = 12.2 liters/day per sq. meter of building area

3. Industrial consumption = 60 liters/person per shift

4. Number of shifts = 2 5. Length of sewer line = 10.2 km