A government panel has presented a bitterly fought-over report showing that sediment in the equatorial bay where the world's biggest gold producer, Newmont Mining, deposited mine waste is polluted with significant levels of arsenic and mercury. But the panelfound the water quality met Indonesian standards...Newmont's vice president for environmental affairs, David A. Baker... said the arsenic levels were basically irrelevant because the arsenic was a kind that would not dissolve in water and enter the food chain...An independent American hydrogeologist...disputed Mr. Baker's contention that the arsenic was "not biologically available in the food chain."