1. It called for further water and soil sampling to determine contamination levels . 2. She said a preliminary assessment found that contamination levels didn't present a threat to humans. 3. The key to whether this rule succeeds is whether USDA takes steps to reduce contamination levels . 4. The high contamination level precludes being able to open the reactor vessel for the eventual refueling. 5. However, PCB sediments north of Albany continue to keep contamination levels in fish elevated throughout the river. 6. When radiobarium was removed from the radiolanthanum, the short term contamination levels turned out to be insignificant. 7. There is no evidence that organic milk has clinically significant higher bacterial contamination levels than does conventional milk. 8. The highest mercury contamination levels are present and can be sourced back to the Placer area in California. 9. Contamination levels there are even higher.10. When these were performed, " the contamination levels were much greater than we ever found in Saudi Arabia,"
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