Assemble crew for job A 10 —

Build inventory with old line B 28 —

Measure and sketch old line C 2 A Develop materials list D 1 C Erect scaffolding E 2 D Procure pipe F 30 D Procure valves G 45 D Deactivate old line H 1 B,D Remove old line I 6 E,H Prefabricate new line J 5 F Place valves K 1 E,G,H Place new pipe L 6 I,J Weld pipe M 2 L Connect valves N 1 K,M Insulate O 4 K,M Pressure test P 1 N