Fuel Storage Tanks, Port Everglades
Eleven new 60-foot-tall fuel storage tanks, with diameters of 125 feet and 100 feet
In the last ﬁve years, over
have been repaired.
company with a small town feel
Subsurface conditions in central Florida typically consist of 20 to 100 feet of sands separated from the underlying calcareous limestone formation by a clay layer of variable thickness. Over time, solution cavities can be formed in the limestone by water percolating through the soluble rock.
The erosion process continues and the size of the cavity increases. Eventually, the cavity may be breached and overlying soils begin to ravel downward into the cavity, similar to sand through an hour glass. As raveling continues, the sand zone above becomes very loose and increases in size until its roof is no longer stable.
The upper soils collapse into the cavity, creating the characteristic surface depression. Property within the area of the sinkhole activity can sustain considerable damage.