Mike performed the PVC pipe Layout for the expansion and upgrade of this Chemical Tank Farm located at the Sunol Valley Water Treatment Plant for the City and County of San Francisco. This upgraded Chemical Feed system with tanks, pumps and piping required a complicated sequence of construction to allow existing tanks to remain in service while incrementally upgrading and replacing each existing component. The new tanks were modeled per the manufacturers specifications including the fitting and connections. The materials take-off is generated automatically from the model and provided to the client. This animated model allows members of the project team to quickly understand the construction sequence.