CWE prepared a Clean California Local Grant Program (CCLGP) grant application for this project, resulting in an award of nearly $1.5 million to the City of Santa Ana for design and implementation of a project that turned the debris-filled King Street parcel into a passive park-like area that supports multiple modes of transportation, such as walking and biking. Existing impermeable surface was removed to make way for drought-tolerant landscaping, shade trees, pervious pavement bicycle path, energy-conserving lighting, interpretive signage, seating, Americans with Disabilities Act (ADA) improvements, stormwater bioretention and infiltration systems, waste receptacles, and public art. The project will capture runoff from a local drainage area of about 10 acres between King Street and Fairview Street.
The King Street Urban Greening Project features an innovative approach in managing stormwater runoff. First, stormwater flows into the Project area and is directed into two Bioretention Basins. The Bioretention Basins have specialized plant, soil, and gravel layers that are designed to filter pollutants and prevent trash from entering the City’s storm drain system. The stormwater then percolates through the Bioretention Basins into an underground stormwater infiltration chamber system.
This system is designed to infiltrate approximately 116,700 gallons of stormwater per storm. Once in the infiltration chamber system, the stormwater slowly percolates down into the North Orange County groundwater basin, where it will eventually become part of the local water supply. This groundwater basin provides drinking water for approximately 85% of North Orange County.
Tasks include researching existing field conditions and records, topographic survey, sizing the stormwater capture system in the conceptual design plans based on the 85th percentile storm event, environmental documentation, providing Plans, Specifications, and Estimates (PS&ES), providing public outreach, utility coordination, geotechnical exploration, and potholing.
Researched existing site conditions and conducted topographic survey
Designed stormwater capture and infiltration systems sized for the 85th percentile storm event
Prepared environmental documentation and coordinated with regulatory agencies
Developed Plans, Specifications, and Estimates (PS&E) for construction
Performed utility coordination, geotechnical exploration, and potholing
Provided public outreach and agency coordination throughout design and implementation
