Los Angeles County Department of Public Works
Harrison Elementary School Soundwall
MND - Mitigated Negative Declaration
Present Land Use
Northern property line of Harrison Elementary School/IT (Institutional) Special Purpose Zone/P (Public Use and Semi Public)
The soundwall would be constructed at the School's north property line adjacent to the sidewalk on the south side of Marengo Street. Accounting for the gaps in the barriers, the proposed soundwall would be approximately 630 feet in length and consist of a combination of rigid soundwalls (i.e., masonry, or other solid barrier system such as post-and- panel) and somewhat less permanent and massive noise barriers (i.e., flexible, mountable sound "blankets" or malts). The soundwall would range in height from approximately 6 foot 7 inches to 7 foot 11 inches (for the mountable noise barriers) to approximately 15 foot 5 inches (for the rigid soundwalls) above local ground. The only exception is at the easternmost rigid soundwall. This portion would vary in height, because it would be constructed underneath the overhead pedestrian bridge.
Other (630-foot long soundwall comprised of rigid & non-permanent noise)
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Vegetation
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Education, California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), Department of General Services (DGS), Department of Toxic Substances Control, Office of Historic Preservation, San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy (RMC), State Water Resources Control Board, Division of Drinking Water, California Department of Transportation, District 7 (DOT)
Reviewing Agency Comments
California Department of Transportation, District 7 (DOT)
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