Green Street Demonstration Project on Main Street


Green streets beautify neighborhoods and provide multiple other benefits while also addressing regulatory requirements to reduce pollutant discharges. The City of Alhambra has identified an opportunity to leverage the median along Main Street between South Fremont Avenue and Hampden Terrace for a demonstration green street project. The identified median has approximately 1.46 acres of open space that is not currently utilized and could be retrofit to capture and treat stormwater runoff from the roadway and surrounding neighborhood. The project was submitted for consideration of SCW funding through the Technical Resources Program in December 2019 and included in the ULAR SIP 2020-21 budget. An additional analysis will be conducted to potentially partner with the City of Los Angeles to increase the capture volume.

Status: Planning
Cost: $300,000
Funding: Safe Clean Water – Measure W (Regional)
Agency Lead: City of Alhambra
Footprint: 0.71 acres (31,000 sf)
Drainage Area: 25.7 acres (1,119,500 sf)
Volume Capture: 1.26 acre-feet
Implemented Control Measures: Bioretention rain gardens
Key Benefits: Green Space, Water Supply, Water Quality