Project planning is the most important stage in any project management. Two (2) important elements in project planning are Work Breakdown Structure (WBS) and Responsible Accountable Consult Informed Matrix (RACI). Table below shows the level and elements involved in a Wastewater Treatment Plant project. Table 1: Activities and sub-activities in a Wastewater Treatment Plant project CATEGORY SUB-CATEGORY Intake 1. Piping 2. Intake 3. Equalization basin 4. Screening 5. Grit chamber 6. Pumps Primary Treatment 1. Clarifier basin 2. Settlement tank 3. Skimmers 4. Sludge collection chamber and diversion Secondary Treatment 1. Aeration lanes 2. Air pumping system 3. Membrane bioreactor 4. Secondary clarifier tank Final Treatment 1. Settlement tank 2. Sludge centrifuge 3. Digesting tanks Filtration 1. Sand filtration system 2. Disinfection processing 3. Outlet system a) From the above table, create a Work Breakdown Structure (WBS) by clearly indicating the WBS levels 1, 2 and 3 for this project