Whakakiia te rerenga e whai ake nei: I te tau 2007 he pūrongo na te United States Environmental Protection Agency mo te rerenga i whakapiki ake i te rahi o te rohe poke ki te, me te rahi o te rerenga ki te, e toru nga wa nui atu i te
Ko te whakaheke o Exxon Valdez. I whakahētia hoki e te pūrongo ngā mahi whakaora me te whakaheke o te horoi.