A deal struck four years ago to save about 10,000 acres of giant redwoods in Humboldt County in Northern California was supposed to end the bitter feuding over logging there. In exchange for $480 million from the federal and state governments, the Pacific Lumber Company agreed to turn the world's largest privately owned grove of ancient redwoods into a public reserve. The company also consented to a series of regulations on logging operations on its remaining 211,000 acres, including some additional preservation.