Maintenance Dredging at Levin Richmond Terminal Berth A and Pacific Atlantic Terminal
Summary
SCH Number
2006108119
Public Agency
Regional Water Quality Control Board, Region 2 (San Francisco Bay), Oakland
Document Title
Maintenance Dredging at Levin Richmond Terminal Berth A and Pacific Atlantic Terminal
Document Type
NOE - Notice of Exemption
Received
Posted
10/11/2006
Document Description
Maintenance dredging of approximately 31,000 cubic yards of sediment - 13,000 cy will be dredged from Levin Terminal Berth A to a depth of -39 feet Mean Lower Low Water (MLLW) with a two-foot overdredge allowance, and approximately 17,000 cy will be dredged from the Pacific Atlantic Terminal to a depth of -38 feet MLLW with a two-foot overdredge allowance. Because DDT was detected in both berths at elevated concentrations that may pose a threat to aquatic life (10 core samples ranging from 140-462 µg/kg), the material will be dredged with a closed environmental clamshell bucket to prevent excess spillage, and the working dredge will be enclosed by a silt curtain or equivalent method of containment to prevent resuspended sediment from leaving the dredge footprint. The dredged material will be transported via barge to the Montezuma Wetlands Restoration Project where it will be beneficially reused as foundation material in Cell 11 which is fully contained and will ultimately be covered by at least seven feet of wetland surface/cover quality material. The Montezuma site is permitted and monitored under a separate Waste Discharge Requirements order issued by the Water Board.
Contact Information
Name
Elizabeth Christian
Agency Name
Regional Water Quality Control Board, Region 2 (San Francisco Ba
Contact Types
Lead/Public Agency
Phone
Location
Cities
Richmond
Counties
Contra Costa
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15304(g)
Reasons for Exemption
Project consists of maintenance dredging where the dredged material is deposited in a disposal area authorized by all applicable state and federal regulatory agencies, as described in Section 15304(g).
Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.