Washington (Platts)--30Jul2012/146 pm EDT/1746 GMT

The US Environmental Protection Agency has established a unified command center at the site of an Enbridge pipeline oil spill in Wisconsin and is monitoring for possible soil, groundwater and air contamination, the agency said Monday.

The EPA deployed emergency personnel to the site near grand Marsh, Wisconsin, on Friday and is working jointly with the Wisconsin Department of Natural Resources and Enbridge, the agency said in a statement.

Enbridge Energy Partners is repairing its 317,600 b/d Line 14, which leaked about 1,200 barrels of crude oil Friday, but the company does not yet have a restart date, a spokeswoman said Monday.

Line 14 ships crude from Superior, Wisconsin, to Griffith, Indiana, via Line 64.

The company's 180,000 b/d Line 13, which was shut as a result of the Line 14 leak, is operating again after being returned to service late Saturday evening, spokeswoman Lorraine Little said in an email. Line 13 ships diluent from Clearbrook, Minnesota, to Edmonton, Alberta.

"With the progress of Enbridge's response, the pipeline is now exposed and repair work is under way," Little said. "A new section of pipe is tentatively scheduled to be installed today. Enbridge continues to investigate the cause of the release."

Enbridge restarted its 400,000 b/d Superior, Wisconsin, to Griffith, Indiana, crude oil Line 61 and its 608,800 b/d Line 6a earlier Saturday.

Lines 6a, 14 and 61 ship mostly light sweet and synthetic crudes.

--Gary Gentile, gary_gentile@platts.com --Lucretia Cardenas, lucretia_cardenas@platts.com --Edited by Lisa Miller, lisa_miller@platts.com