In 2003, the maintenance staff of the National Park service on Liberty Island decided that it was time to upgrade their irrigation control system. There were a number of isolated, stand-alone controllers on site, and coordinating the timing of irrigation schedules had grown increasingly difficult. The number of visitors to the park had increased significantly in the wake of 9/11, and there were also increased security demands because of the high-profile nature of this national monument. In addition, the old conventional wiring system from controller to valve had begun to fail. Maintaining the satisfactory operation of the system had become a burdensome task.
Aqua-Mist was called in as a consulting subcontractor. We were able to centralize the entire irrigation scheduling system by using the RainBird MDC decoder system, which was linked to the Horticulturistís office computer. We established a continuous two wire path to all the irrigation solenoid valves in the field, eliminating dozens of deteriorating wires and multiple field controllers. Scheduling was then coordinated for all stations from the same location.