Fish & Wildlife 3 (Napa)
(California Department of Fish and Wildlife, Region 3)
Mare Island Dry Dock Maintenance Dredging
NOE - Notice of Exemption
The project is limited to clamshell bucket dredging to remove accumulated sediment. A clamshell bucket barge-mounted dredge will approach the site via the Mare Island Strait. Dredging will remove approximately 78,733 cubic yards of material from in front of Dry Dock #2, Dry Dock #3, Dry Dock #4, and material within Berths 13 and 15. Dredge depth in front of the caissons at Dry Dock #2 and Dry Dock #3 will be to -32 feet mean lower low water (MLLW) with a 2-foot over-dredge allowance; dredging in Berth 13 will be to -28 feet MLLW with a 2-foot over-dredge allowance, and at Berth 15 to -26 feet MLLW with a 2-foot over-dredge allowance. All dredge spoils will be moved via a dredging barge with an 8 cubic yard offloading bucket to Cullinan Ranch for reuse. Issuance of a Streambed Alteration Agreement No. 1600-2014-0211-R3 is pursuant to Fish and Game Code Section 1602.