Mare Island Dry Dock Maintenance Dredging

Summary

SCH Number
2014068315
Lead Agency
Fish & Wildlife 3 (Napa) (California Department of Fish and Wildlife, Region 3)
Document Title
Mare Island Dry Dock Maintenance Dredging
Document Type
NOE - Notice of Exemption
Received

Document Description
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.

Contact Information
Lorie Hammerli
California Department of Fish and Wildlife, Region 3
7329 Silverado Trail
Napa, CA 94558

707-944-5568

Location

Cities
Vallejo
Counties
Solano

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
S:15301,15304, Class 1, 4
Reasons for Exemption
Operation, repair, maintennace of an existing facility involving negligible or no expansion of use.
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