Garvanza Park Storm Water BMP Project

Project Description

The Garvanza Park Stormwater Best Management Practices (BMP) project is the first of its kind in Los Angeles. North East Trees in co-ordination with the City of Los Angeles, Bureau of Sanitation, has completed the design and construction of this innovative project that has the capacity to capture and clean more than one million gallons of rain water and rainwater runoff at a time.

Project Information

Project Funded by:

City of Los Angeles

Regional Water Quality Control Board (Prop 40 and Prop 13)

Best Management Practices (BMP) :

 A large storm drain passes under Garvanza Park (located at 6240 E. Meridian Street, Los Angeles, CA 90042) that carries all the water draining from the hilly neighborhood above it directly to the Arroyo Seco. Typically, this urban rainwater runoff carrying oil and other pollutants from the streets travels to the Los Angeles River and finally empties into the ocean. This BMP captures the rain water and diverts the polluted rainwater runoff into two large cisterns that are installed under the park.

Water is cleaned and filtered utilizing natural infiltration processes. Water collected in one chamber is allowed to soak into the soil replenishing the groundwater. The other chamber stores water that is used to irrigate the park during the dry months.

This project helps keep the Arroyo Seco, Los Angeles River, and the ocean healthy and clean, while also conserving precious potable water.

 

How It's Done

Excavation of the park and shoring of the resulting basin

Subsurface irrigation system being installed that will use water stored in the retention cisterns to irrigate the park

Cisterns being set onto the footings. These units are buried under the park at a depth of 18 feet

 Finally, Garvanza Park as it looks now

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