?????????????????????????????????????[GARY SHIGENAKA] "Any time we have a spill or when we're attempting to assess the effect of any action or disturbance on an surroundings in concern, we generally check with, 'well, what were things like beforehand.' And for oil spills, we seldom know. In the case from the Exxon ValdezH?p tho?i b?t lên t? ??ng k