Sou<strong>the</strong>rn Area Habitat Enhancement Alternative 5A: Dredg<strong>in</strong>g with Sand Cover Remedial Action Dredge to 1' : 9,574 sy Dredge to 3' : 6,290 sy Dredge to 4' : 39,700 sy Dredge to 5' : 13,320 sy Sand Cover : 32,250 sy Alternative 5B: Dredg<strong>in</strong>g with Habitat Cover Remedial Action Dredge to 1' : 2,320 sy Dredge to 3' : 6,290 sy Dredge to 4' : 39,700 sy Dredge to 5' : 13,320 sy Salt Marsh (0 -2') : 10,720 sy Oyster Reef (2-8') : 10,300 sy S<strong>of</strong>t Bottom Habitat (> 8') : 11,230 sy Area (sy) Volume (cy) Dredge to 1' 9,570 3,190 Dredge to 3' 59,310 59,310 Dredge from 3-4' 53,020 17,673 Dredge from 4-5' 13,320 4,440 Total: 84,613 Area (sy) Volume (cy) Dredge to 1' 2,320 773 Whole Area to 3' 59,310 59,310 Dredge from 3-4' 53,020 17,673 Dredge from 4-5' 13,320 4,440 Total: 82,197 Granite Berm Navigation Channel Surface PAH (mg/Kg) < 45 45 - 100 100 - 500 500 - 1,000 1,000 - 2,000 2,000 - 3,000 > 3,000 Hotspot > 500 mg/Kg Granite Berm Navigation Channel Surface PAH (mg/Kg) < 45 45 - 100 100 - 500 500 - 1,000 1,000 - 2,000 2,000 - 3,000 > 3,000 Hotspot > 500 mg/Kg
• Sand Layer placement: 10,000 CY • Saltwater Marsh construction: 2-acres • Oyster Reef construction: 4.3-acres