Enbridge says no restart date for ruptured line

* Restart of Michigan line in hands of regulators

* As much as 6,000 barrels collected from spill

* Oil is not advancing toward Lake Michigan - EPA

By Bernie Woodall and Scott Haggett

DETROIT/CALGARY , July 30 (Reuters) - Enbridge Inc's (ENB.TO: Quote) chief executive said on Friday he was unable to say when the company would be able to restart the Michigan pipeline that ruptured earlier this week, spilling more than 800,000 gallons of oil.

There was "no forward push of the oil" toward Lake Michigan by Friday, Ralph Dollhopf, the on-scene coordinator for the U.S. Environmental Protection Agency, told reporters.

While Enbridge Chief Executive Pat Daniel said that making the pipe ready to resume operation can take only a matter of days, but he said a restart of the pipeline is in the hands of U.S. regulators.

The U.S. Department of Transportation ordered Enbridge on Wednesday to complete a number of precautionary steps before restarting the 286-mile (463 km) pipeline carrying as much as 190,000 barrels per day of oil from northern Indiana to Sarnia, Ontario.

"The ultimate decision is with the third-party regulator and not with Enbridge," Daniel said on a conference call.