Central Los Angeles Learning Center No. 1

3 Documents in Project


SCH Number
Lead Agency
Department of Toxic Substances Control
Document Title
Central Los Angeles Learning Center No. 1
Document Type
NOP - Notice of Preparation
Document Description
The LAUSD proposes to construct a K-12 campus on the project site, which was described in detail in the 2004 FEIR. The 2004 FEIR disclosed the presence of subsurface gases at the project site, including methane and hydrogen sulfide, specifically with regard to the Corehole area. Since certification of the 2004 FEIR, LAUSD has installed a vent cone at the former Colehole and has conducted vapor monitoring. The monitoring has identified more extensive methane and hydrogen sulfide across the project site than was contemplated in the 2004 EIR. LAUSD submitted a draft Remedial Action Plan (RAP) to DTSC pursuant to chapter 6.8, division 20 of the California Health and Safety Code designed to remediate and monitor methane and hydrogen sulfide gases at the project site. If approved, the RAP would authorize LAUSD to construct and operate a methane and hydrogen sulfide mitigation system that will include a permeable sand dispersion layer; a passive venting system; a sub-slab membrane, passive venting system with air sweep, triggered heating ventilation and air condition and detection/alarm; membrane and sand dispersion layer beneath the swimming pool with perimeter trench and gas collection piping tied to vent risers; and monitoring of methane and hydrogen sulfide with hand-held instruments as part of the operation and maintenance program.

Contact Information

Stephanie Lewis
Agency Name
Department of Toxic Substances Control
Contact Types
Lead/Public Agency


Los Angeles, Los Angeles, City of
Los Angeles
Cross Streets
Wilshire Boulevard & South Catalina Street
Total Acres

Notice of Completion

Review Period Start
Review Period End
Local Actions
Remedial Action Plan
Project Issues
Air Quality, Hazards & Hazardous Materials, Noise, Transportation
Reviewing Agencies
California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Health Care Services (DHCS), California Department of Parks and Recreation, California Department of Transportation, District 7 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), Caltrans, Division of Aeronautics, Department of Water Resources, Office of Emergency Services, California, Resources Agency

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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