in july , 2002 , marathon received a notice of enforcement from the state of texas for alleged excess air emissions from its yates gas plant and production operations on its kloh lease . a settlement of this matter was finalized in 2004 , with marathon and its co-owners paying a civil penalty of $ 74000 and the donation of land as a supplemental environmental project in lieu of a further penalty of $ 74000 . marathon is owner of a 38% ( 38 % ) interest in the facilities