what toxins are in the river. and it didn't come from the epa. the southern indians are the ones that informed us this toxic spill took place. >> heavy metal, lead, arsenic, stays in the water and settles. >> that is exactly right. it stays in the water. we have had a community that pulled together with state and local and navaho nations helping pour water in the river and dilute but it does settle. we will have probably a second round of the toxins once it snows and that melts into the river. >> what is your understanding for why this happened, governor? >> they were trying to -- there was a leakage in an old mine in colorado. while the leakage was taking place they were trying to plug and seal it. instead the plug actually failed