Interim Measure
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Summary
- SCH Number
- 1990011026
- Lead Agency
- Environmental Protection Agency, California (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
-
Steve McArdle
DTSC
9211 Oakdale Ave.
Chatsworth, CA 91311
Phone : (818) 717-6564
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
- Final Environmental Document Available at
- 9211 Oakdale AVe., Chatsworth, CA 91311
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
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.