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6.0 Impact Considerations Version :27.10.4 <br /> Exposed, Wave-cut Platforms <br /> • Description <br /> . These shores consist of a bedrock shelf or platform of variable width and very <br /> gentle slope. <br /> . The surface of the platform is irregular; tide pools are common. <br /> . Along headlands, they have only small accumulation of sediments, mostly at the <br /> high-tide line. <br /> . They often co-occur with gravel beaches; the gravel beach can be either at the <br /> upper or the lower half of the intertidal zone, depending on the nature of the <br /> bedrock outcrop. <br /> . Species density and diversity vary greatly, but barnacles, snails, mussels, and <br /> macroalgae are often abundant. <br /> • Predicted Oil Behavior <br /> . Oil will not adhere to the wet rock surface, but could penetrate crevices or <br /> sediment veneers. <br /> • Oil persistence is usually short-term, except in wave shadows or where the oil <br /> was deposited high above normal wave activity. <br /> • Response Considerations <br /> . Cleanup is usually not required. <br /> . Where the high-tide area is accessible, it may be feasible to manually remove <br /> heavy oil accumulations and oiled debris. <br /> Shell Supply and Distribution 6-39 Stockton Terminal FRP <br /> ©2019 Witt O' Brien's Revision Date:October, 2019 <br />