a quantity of electrolyte disposed in said first container and permeating said bottom closure and said layer of pavement to provide ion transport between said first reference electrode and said {HEAD ~ soil} under {TAIL ~ said pavement} 
a quantity of electrolyte disposed in said first container and permeating said bottom closure and said layer of pavement to provide ion transport between said first reference electrode and said { HEAD ~ soil } under { TAIL ~ said pavement }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL