Ca. 73-81/Drain. Fillings associated with the construction of the Great Drain South, especially the fill thrown in behind the east wall of the drain at the time of its building.
Cf. A 20-21:1 and B 19:7 ... Ca. 425-400 B.C.
Well at 69/ΟΒ (Late 5th c.)
Lower fill dated to 420-400 B.C. in Agora XXX.
There were no use filling and the well was apparently not a success as a water-supply: there was no concentration of water-jars ... 420-400 B.C.