An extra day is expected to be added to the mission at the request of International Space Station managers in order to carry out extra tasks on the station.

BBC: The two astronauts spent nearly seven hours on the outside

Station managers would not wish to push it much higher because that would take it closer to known debris fields and more of the space radiation that can be harmful to the health of astronauts.

BBC: International Space Station in debris scare

Another damage report: Managers had discovered another possible oil spill at Valero's Natchez Station terminal in Louisiana.

FORBES: Magazine Article

That optimistic timeline had been offered by numerous NASA managers, who would like to resume shuttle flights to the international space station soon to send crews and components to the unfinished orbiting outpost.

CNN: Shuttle not likely to fly by spring, experts say

Emergency director Marcogliese asked terminal managers to line up fuel trucks that could be sent to resupply a gas station near the Texas City refinery so workers at least would have fuel to get around.

FORBES: No Time To Waste