A bollard for mounting to a foundation includes a bollard post element having a cavity therein with a base plate integrally fixed about its periphery to the bollard post element at the cavity. The base plate includes anchor holes and threaded holes extending therethrough. Levelers having threaded shafts with pads on one end and drivers on the other engage the threaded holes. Threaded anchor shafts extendible through the anchor holes and fixable to the foundation for the bollard are drawn in tension by nuts on top of the based plate. This simultaneously places the levelers in compression. In installation, the highest point on the foundation beneath the periphery of the base plate is established and the levelers adjusted to extend the bollard vertically with the bollard extending from that highest point.