ECOncrete: Interlocking Tidal Pool System


SCH Number
Lead Agency
San Diego Unified Port District
Document Title
ECOncrete: Interlocking Tidal Pool System
Document Type
NOE - Notice of Exemption
Project Applicant
Philippe Leblanc

Document Description
The proposed project is a three-year pilot project that would replace portions of existing rip-rap at three installation sites on Harbor Island with biologically-enhanced concrete units interlocking into a tidal pool system (tidal pool system). The installation sites would include Harbor Island Park,Spanish Landing Park East, and the western tip of Harbor Island. The tidal pool systems are designed to create water retaining elements which are absent in most urban waterfronts. The tide pools would provide shoreline stabilization while simultaneously creating a well-defined local ecosystem that mimics natural rock pools typical to rocky coasts, as well as increase local biodiversity and biological productivity. Each site would consist of the replacement of approximately 15 feet wide by 42 feet long area of rip-rap, for a total square footage of 630 square feet per site. A five-foot buffer in each direction of the installation site, for total project area of 3,900 square feet spread amongst the three installation sites. Each installation site is positioned to be intermittently submerged by the tide and therefore, will not encroach into public park space. See NOE for Full Details.

Contact Information
San Diego Unified Port District
3165 Pacific Highway
San Diego, CA 92101

Phone : (619) 686-6516


San Diego
San Diego
Other Location Info
Harbor Island

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption


Notice of Exemption
2019100503_ECOncrete Interlocking tidal pools   PDF 4107 K

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