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NIEHS Oil Spill Cleanup Training Tool <br />OSHA <br />What Happens When the Oil Reaches Shore? <br />• Oil exposure to the shoreline depends on wave energy and tides, substrate <br />type, and slope of the shoreline. <br />• Shoreline type is classified by rank depending on how easy the oil would <br />be to clean up, how long the oil would persist, and how sensitive the <br />shoreline is. <br />• Oil may persist longer than expected based on microclimates. Some of the <br />weathered crude may develop a thin "skin" which when disturbed during <br />cleanup, releases fresher oil. <br />• Oil may not weather into a semisolid tar because of the water emusification <br />and organic matter, vegetation mixed into the mousse. <br />52 WORKER EDUCATION & TRAINING PROGRAM <br />