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

2 Documents in Project


SCH Number
Lead Agency
Department of Toxic Substances Control
Document Title
Remediation of Solid Waste Management Unit Number 4 at USS- POSCO
Document Type
NEG - Negative Declaration
Present Land Use
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
Agency Name
Department of Toxic Substances Control
Contact Types
Lead/Public Agency


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

State Review Period Start
State Review Period End
State Reviewing Agencies
Air Resources Board, Major Industrial Projects, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California State Lands Commission (SLC), Delta Protection Commission, Department of Water Resources, Resources Agency, Resources, Recycling and Recovery, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, California Department of Transportation, District 4 (DOT)
State Reviewing Agency Comments
California Department of Transportation, District 4 (DOT)
Development Types
Waste Treatment:Hazardous (corrective action remediation)
Local Actions
RCRA Statement of Basis for Corrective Action
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Cultural Resources, Drainage/Absorption, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Public Services, Recreation, Schools/Universities, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildlife

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 or via phone at (916) 445-0613.

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