Please I need urgent help with how to find the predecessors from the requirements above for Critical Path Method. Thanks

In his analysis, Mr. Padilla prepared the following items that need to be found in the construction of the golf course: 1. Survey of the site and stacking need to be completed in order to determine the construction limits. This activity needs to be finished prior to the start of any other activities. 2. After the site is being surveyed, the work of clearing and grubbing should be performed, which consist of the removal and satisfactory disposal of all vegetation and debris. 3. Next step is grading operation. Grading is done after the clearing and grubbing is completed in order to prevent the interference of debris with the excavation operation. 4. Installation of drainage system is required and needed to be done according to the drainage design criteria. 5. Installation of Irrigation system is also necessary to move ahead with the construction. 6. Preparation of seed bed is required, which includes construction of greens. 7. Construction of holes (18 holes). 8. Plantation of trees and lawn need to start after the soil preparation operation is completed. 9. Germination process needs to take place, which is the time it takes the seeds to grow. 10. Construction of the management facility could start as soon as the grading operation is completed. The first step in management facility building is excavation, than comes placing the foundation. The next step is performing the backfill and compaction. Building the rough structure could start after the backfill and compaction are done. When the rough structure is put in place, the exterior plumbing and electrical work can start respectively. At the same time, the interior plumbing, electrical work, and mechanical work (heating/Cooling Systems) can also be performed respectively. 11. Construction of building facility landscape is required after the exterior electrical work is done. 12. A final building inspection is needed when all management facility building is completed. 13. A site inspection is required when the germination period is over. 14. Grand opening. The golf course is ready to be used. Activity Activity Description Activity Time (weeks) Survey & Stacking Clearing & Grubbing Grading Drainage System. Irrigation System Seed bed preparation Construction of holes Planting Grow Period Building Facilities Excavation Building Facilities Foundation Building Facilities Backfill and Compaction Building Facilities Rough Structure M Exterior Plumbing N Exterior Electrical work Interior Plumbing Interior Electrical work Interior mechanical work (heating/Cooling systems) Building facilities landscape Building Inspection Site inspection