Merced Avenue Stormwater Capture Project CIP No. 089

The City of El Monte is implementing the Merced Avenue Stormwater Capture Project (CIP No. 089), a comprehensive infrastructure initiative located on a 2.56-acre site between Merced Avenue and Brockway Street in Los Angeles County. The project focuses on replacing an existing open concrete storm drain with a subsurface reinforced box culvert and a diversion structure designed to capture dry-weather and partial wet-weather flows. These captured flows will be managed by a treatment system featuring pretreatment facilities and a 0.3-acre vegetated bio-swale with a storage capacity of 0.23 acre-feet and a subsurface passive irrigation system. In addition to water quality enhancements, the project includes significant pedestrian and bicycle connectivity improvements. This involves the construction of a shared use path above the new culvert, the installation of raised crosswalks at Merced Avenue and Brockway Street, motion-activated lighting, pedestrian gates, and an 8-foot-tall metal screening fence along the northern and southern boundaries. Managed by the Public Works Division, the project is subject to environmental review under CEQA, with an Initial Study and Mitigated Negative Declaration process. Construction is anticipated to begin in May 2027 and reach completion by December 2028.