Interim Measure
4 Documents in Project
Summary
SCH Number
1990011026
Lead Agency
California Environmental Protection Agency
Document Title
Interim Measure
Document Type
NOD - Notice of Determination
Received
Posted
6/9/2016
Document Description
Significant concentrations of contaminants of concern (hexavalent chromium) are present in the vadose zone at the Phibro-Tech Hazardous Waste Facility (Site) and pose a potential threat to groundwater if not remediated. The Interim Measure activities described in the Work Plan consist of in-situ remediation of soils at the Site through the injection of a calcium polysulfide (CPS) solution to stabilize hexavalent chromium. CPS injections were previously used at the Site as part of a 2012 Pilot Test to treat hexavalent chromium affected vadose zone soils and groundwater. In-situ remediation of hexavalent chromium uses chemical reduction or fixation. Chemical reduction or fixation of hexavalent chromium reduces it to the more thermodynamically stable trivalent chromium, which can precipitate or absorb to soil. A reductant such as CPS can convert the toxic and soluble hexavalent chromium into an insoluble non-toxic hydroxide compound.
Contact Information
Name
Steve McArdle
Agency Name
DTSC
Contact Types
Lead/Public Agency
Phone
Location
Cities
Santa Fe Springs
Counties
Los Angeles
Cross Streets
DICE RD & ALAUSON AVE.
Parcel #
8168-001002
State Highways
605
Railways
SANTA FE
Notice of Determination
Approving Agency
DTSC
Approving Agency Role
Responsible Agency
Approved On
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
No
(4) A mitigation reporting or monitoring plan was adopted for this project
N/A
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No
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