The King County industrial-waste program on Wednesday denied a permit for discharge of waste water into the county’s regional sewer system from Shell Oil’s Arctic home port fleet based at Terminal 5 at the Port of Seattle.

City, state and county officials have now extended an unwelcome mat to the oil giant, but Shell shows no signs of disembarking. A second giant drilling rig, the controversial Noble Discoverer, is reportedly about to move from its berth in Everett to Terminal 5.

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