Removal Action Workplan for the Former Production Plating Facility, Huntington Beach, CA

6 Documents in Project

Summary

SCH Number
2008071143
Lead Agency
City of Huntington Beach
Document Title
Removal Action Workplan for the Former Production Plating Facility, Huntington Beach, CA
Document Type
NOD - Notice of Determination
Received
Posted
9/22/2015
Present Land Use
Developed with and designated for commercial uses

Document Description
DTSC approved a Removal Action Workplan (RAW) for the Former Production Plating Facility pursuant to Chapter 6.8 of the California Health and Safety Code. The RAW includes the following activities: 1. The excavation of VOC- and lead-impacted soil from identified areas within and around site building. Approximately 1,800 tons of soil is expected to be generated from excavation of a 3,000 sf area to 12 ft below the ground surface. 2. The excavation will proceed approximately 4 ft below the water table; therefore, the RAW includes over-excavation of saturated soil and groundwater. Once the excavation is complete, to further reduce VOC concentrations in groundwater, groundwater will be pumped for up to 24 hrs, to remove an estimated 10,000 gallons of groundwater. 3. The excavated impacted soil will be transported off-site to a permitted facility. 4. To determine the completeness of the RAW, soil confirmation sampling of the excavation flood and sidewalls will be performed to verify that soil exceeding cleanup objectives has been satisfactory removed. If concentrations of COCs exceeding the Site remedial goals are detected in the confirmation samples, additional excavation will be performed. 5. To determine that the groundwater remediation goals have been achieved, following the 24-hr pumping period, groundwater will be sampled. If groundwater concentrations remain above remedial goals, the groundwater will be sampled. If groundwater concentrations remain above remedial goals, the groundwater will be pumped for an addition 24 hrs and resampled again for confirmation. 6. At the completion of the remedial excavation and confirmation sampling, the excavation will be backfilled with either native materials taken from other areas of the property or from an approved borrow site. The contractor grader is required to meet the standards established for the surrounding development and the excavated area will be returned to grade and to suitable standards of completion. 7. To address naturally occurring methane present in the site area, the future improvements that will be constructed on the site and surrounding parcels will include the installation of a sub-slab methane-mitigation barrier and venting system. Although the over-excavation of soil and groundwater planned as part of the RAW is expected to remedy VOCs to the applicable standards, the methane mitigation system will also serve as additional protection from potential VOC intrusion to future site occupants. The excavation will take less than one month to complete and will be performed concurrent with demolition of the existing site building and grading of the site and surrounding properties to facilitate the planned redevelopment. The sub-slab system will be installed beneath the new multi-family residential building that will occupy the site and surrounding properties.

Contact Information
Hossein Nassiri
DTSC
Lead/Public Agency
5796 Corporate Avenue
Cypress, CA 90630

Phone : (714) 484-5384

Location

Cities
Huntington Beach
Counties
Orange
Cross Streets
Beach Boulevard/Edinger Avenue corridors
Zip
92648
Total Acres
459
Parcel #
multiple parcels
State Highways
SR-39
Railways
Union Pacific
Schools
multiple in vicinity

Notice of Determination

Approving Agency
DTSC
Approving Agency Role
Responsible Agency
Approved On
Final Environmental Document Available at
DTSC 5796 Corporate Avenue, Cypress, CA 90630

Determinations

(1) The project will have a significant impact on the environment
Yes
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(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
Yes
(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
Yes
(6) Findings were made pursuant to the provisions of CEQA
Yes

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.

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