SCH Number 1991042057

Project Info

Title

Approval of a Remedial Action Plan for Soil at the former SPTCo Sacramento Railyard, Lagoon Study Area, Sacramento, California

Description

DTSC has prepared an Explanation of Significant Differences (ESD) for proposed changes to the approved 2003 Amendments to the Remedial Action Plan (RAP) for the Lagoon Study Area (LSA) Northwest Corner of the downtown Sacramento Railyards. The ESD has been approved by DTSC to amend the RAP administrative record to address the following changes proposed by Union Pacific Railroad: - The 10-acre Northwest Corner area proposed for capping has been expanded to include the adjacent 3.5 acre Former Oil Storage Area. - The cap design has been modified from a combination asphalt and vegetative cover to a geosynthetic barrier overlain by a minimum 2 foot thick vegetative cover. The requirements for the deed restriction and operations and maintenance plan have also been modified for consistency with the modified cap design. - Utilize inert onsite soils (up to 230,000 cubic yards) as an engineered foundation layer beneath the cap. A hierarchy of appropriate soil to be used in the foundation layer has been approved by DTSC and Regional Water Quality Control Board.

8 documents in project