(1) After notification of a discovery, the person in charge of any survey, excavation, construction, agricultural practices or like activity on private or state lands which has disturbed or threatens to disturb human skeletal remains, a burial site or burial material, shall immediately take all reasonable steps to secure preservation of the site in situ by immediately stopping all activity destructive to it and by making a reasonable effort to secure it from vandalism, theft, erosion and other harmful disturbance.