Stained soils excavation, Area O primary location, east side wall - 5/1/09
Stained soils excavation, Area O primary location - 5/1/09
Stained soils delineation in Area O - 4/30/09
Stained soils excavation, Area O primary location, 20 foot depth - 5/1/09
PID screening in Area O - 4/30/09
Area O excavation, looking west from Grove Street - 5/2/09
Area O excavation looking south from the Alternate Support Zone - 5/1/09
