Chevron Corp., on trial…for allegedly failing to clean up billions of gallons of toxic wastewater in the Ecuadorean jungle,…criticized the judge presiding over the case for creating "obstacles" to a fair trial…. Chevron denies the allegations and says Texaco…followed Ecuadorean environmental laws in a…cleanup, which the government approved in 1998. Chevron's…lawyer Silvia Garrigo told The Associated Press…"The judge has done a number of things that are obstacles to a fair and transparent trial"…. Steven Dozinger, a legal adviser for the plantiffs, called Chevron's comments "a desperate, last-ditch strategy to derail a case it is losing." [also refers to Petroecuador]