Remediation of Solid Waste Management Unit Number 4 at USS- POSCO

2 Documents in Project


SCH Number
Lead Agency
Toxic Substances Control, Department of (Department of Toxic Substances Control)
Document Title
Remediation of Solid Waste Management Unit Number 4 at USS- POSCO
Document Type
NEG - Negative Declaration

Document Description
DTSC is considering approval of a Resource Conservation Recovery Act Corrective Action Statement of Basis for the USS-POSCO Industries site (UPI) in Pittsburg, California, pursuant to Health and Safety Code, Division 20, Chapter 6.5. The purpose of the corrective action is to remediate soil, soil gas, and groundwater contamination associated with Solid Waste Management Unit 4 at UPI. The remedial alternative includes targeted removal of soil, extraction of soil vapor and groundwater within the area where the original release took place, in-situ treatment of groundwater in the most contaminated segments of the plume, and installation of a reactive barrier along the property boundary to prevent the migration of contaminants in concentrations above aquatic habitat protection levels. The alternative also includes implementation of a long-term groundwater monitoring system, and preparation and recordation of a Land Use Covenant restricting land use to Industrial and prohibiting the beneficial use of groundwater within the surface area of the land being remediated.

Contact Information
Tony Natera
Department of Toxic Substances Control
700 Heinz Avenue
Berkeley, CA 94710-2721

510 540 3757


38°1.32'15"N 121°51'26.19"W
Contra Costa
Cross Streets
Harbor Street and Pittsburg-Antioch Highway
Total Acres
State Highways
CA 4
Sacramento River and San Joaquin Rivers

Notice of Completion

Review Period Start
Review Period End
Development Type
Waste Treatment:Hazardous (corrective action remediation)
Local Action
Other Action Other Action: RCRA Statement of Basis for Corrective Action
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Drainage/Absorption Geologic/Seismic Minerals Noise Public Services Recreation/Parks Schools/Universities Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Wildlife Land Use
Reviewing Agencies
Air Resources Board, Major Industrial Projects California Department of Parks and Recreation California Highway Patrol California Public Utilities Commission Delta Protection Commission Department of Fish and Wildlife, Region 3 Department of Water Resources Native American Heritage Commission Regional Water Quality Control Bd., Region 5 (Sacramento) Resources Agency Resources, Recycling and Recovery San Francisco Bay Conservation and Development Commission State Lands Commission State Water Resources Control Board, Division of Drinking Water Caltrans, District 4
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