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SALT LAKE CITY (AP) -- Utah water-quality officials say the toxic effects of a pipeline oil leak in a Salt Lake City creek are diminishing but still endanger aquatic life.
The Division of Water Quality released lab results Tuesday for water samples taken over the past several days from Red Butte Creek.
Agency director Walt Baker says the lab results confirm that residual oil remains in the creek after cleanup efforts, but the toxicity level has dropped more than threefold since initial tests.
Baker says the latest water samples show little crude oil drained into the Jordan River or Great Salt Lake.
Chevron Corp. has said a short in a high-voltage power line traveled through a utility fence post and melted a quarter-size hole in the pipeline June 12, releasing 33,000 gallons of oil.