Los Angeles Times

SEATTLE — Adding to the troubles plaguing Shell Alaska and its drilling program in the Arctic, theEnvironmental Protection Agency announced late Thursday that it had issued air pollution citations to both of the company’s Arctic drilling rigs for “multiple permit violations” during the 2012 drilling season.

In a brief notice, the federal agency said the company could be subject to fines or other measures as a result of the violations. EPA officials said the problems were discovered during an inspection of the Noble Discoverer drilling rig and because Shell reported that it had exceeded nitrogen oxide emissions limits on both its drilling rigs during operations last summer.

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