The U.S. Forest Service has estimated that the cost of putting out California's 1987 forest fires and restoring the blackened timber and range land will be more than $310 million. The Forest Service figures state and federal governments spent $160 million to fight 1,200 fires ignited by lightning starting Aug. 29. One major blaze in the Klamath National Forest in Siskiyou County is still uncontained. Jon Kennedy, assistant regional forester for the U.S. Forest Service in San Francisco, estimated that the additional total rehabilitation cost would be $150 million or more. The fires burned more than 800,000 acres in California. The cost estimates did not cover up to 300,000 acres scorched in Oregon.