NEW : Seattle official says the state is looking for signs of environmental damage . The grounded drilling barge Kulluk shows no sign of leaking fuel , Churchfield says . A tug had to set the rig free during a severe storm Saturday . The rig -- a key part in Shell 's controversial Arctic oil exploration project -- ran aground off uninhabited Sitkalidak Island , about 200 miles south of Anchorage , on Monday night . The rig 's crew of one evacuated on Monday .
NEW : Seattle official says the state is looking for signs of environmental damage . The grounded drilling barge Kulluk shows no sign of leaking fuel , Churchfield says . A tug had to set the rig free during a severe storm Saturday . The rig 's crew of one evacuated on Monday .