Simplot acknowledges...that the nearby waterway of Hoopes Springs still measures 70 parts per billion of selenium, 14 times the federal limit.
So Simplot decided to also make a case for a different standard. Mr. Prouty, the company vice president, said the trout population in the nearby creeks has remained stable over 30 years. Perhaps, he suggested, local cold water trout are more resistant to selenium than other fish. “The five-parts-per-billion standards are based on warm water fishes that are typically more sensitive than our trout, “ he said.
So Simplot officials hired scientific consultants, and in August 2010 they submitted a draft report to the government, which suggested that the brown trout could support selenium tissue levels of 13 to 14 parts per million in their tissue...-- report