; and (2) $1,000 per mile for pipelines in water depth of under 500 feet. 4. Requirement relating to exposed segments of offshore pipelines If the Bureau of Safety and Environmental Enforcement identifies any exposed segment of any active or decommissioned pipeline, the Bureau shall either remove the pipeline from the ocean or ensure it is properly decommissioned and does not pose a threat. If a segment of any active pipeline is exposed or shifts, the Bureau shall re-secure such segment to the sea floor. 5. Completion of study relating to environment risks of chemical products used in oil and gas operations (a) Completion of study The Bureau of Safety and Environmental Enforcement shall complete a study addressing the risks to the environment of chemical products used in oil and gas operations including umbilical lines. In conducting the study, the Bureau shall seek input from chemical suppliers and the oil and gas industry. (b) Report Not later than two years after the date of enactment of this Act, the Bureau shall transmit a report of the findings and determinations in such study to Congress, including any recommendations for legislation. 6. Effective Date No provision of this Act shall take effect without considering whether such action will result in a reduction of reef fish habitat.