United Rock Quarry No. 3 Project

2 Documents in Project


SCH Number
Lead Agency
Los Angeles County Flood Control District
Document Title
United Rock Quarry No. 3 Project
Document Type
EIR - Draft EIR
Present Land Use
Quarry Overlay - Open Space; Quarry
Document Description
LACFCD manages a flood control system of dams, reservoirs, and debris basins that are designed to collect sediment from the hillsides and prevent it from damaging property downstream. The proposed project proposes to acquire and use United Rock Quarry No. 3 as a new sediment placement site (to be called Buena Vista SPS), which would allow the LACFCD to prolong its sediment management capabilities into the future. The Project would involve the use of Quarry No. 3 as a permanent placement location for sediment removed from the District's reservoirs, debris basins, spreading grounds, and other facilities. The Project would include a project construction phase and a project operations phase. Construction activities would include necessary improvements to the Quarry No. 3 site, the Buena Vista Spreading Basin site, and the surrounding vicinity to enable trucks to dispose of material in the new Buena Vista SPS. The District would begin project construction in 2019 and Project operation in 2020. Placement of sediment at Buena Vista SPS would last approx. 50 years; therefore, the anticipated end date of the Project's operation would be in the year 2070.

Contact Information

George De La O
Agency Name
Los Angeles County Flood Control District
Contact Types
Lead/Public Agency


Los Angeles
Cross Streets
Buena Vista St/Bateman Ave
Parcel #
State Highways
I-605, 201
LACO Metro Train
Beardslee ES, Maxwell ES, Santa Fe MS, Plymouth ES, Pear PrepES
San Gabriel River, Buena Vista Channel

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Department of Water Resources, Resources Agency, California Department of Transportation, District 7 (DOT)
State Reviewing Agency Comments
California Department of Transportation, District 7 (DOT)
Development Types
Other (sediment management)
Local Actions
sediment management
Project Issues
Air Quality, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Hydrology/Water Quality, Mineral Resources, Noise, Transportation

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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