San Leandro Creek Hazardous Tree Removal Project Project Purpose 1998 “El Nino” knocked down...

San Leandro Creek Hazardous Tree Removal ProjectSan Leandro Creek Hazardous Tree Removal Project

Project Purpose

1998 “El Nino” knocked down over 200 hazardous trees

Over 30 reports of property damage since 1999

Over 400 hazardous trees identified in San Leandro Creek

The Project

Removing 42 Hazardous trees from District owned properties

Planting 350+ native plants

Preserving over 60 mature native trees within project limits



Project Locations

Trees are being removed from District owned properties only

Three Locations:

10 trees at Huff Ave.

11 trees at Cary Dr.

22 trees at St Mary Ave.

Project Schedule

Construction will begin in early August

Trees will be removed by the end of September or early October

Restoration will occur at the beginning of the wet season


Questions and Answers


Location


Project Locations Project Locations on District Owned on District Owned PropertyProperty

District Owned District Owned PropertyProperty


•CEQA Compliance - Categorically Exempt

Environmental Considerations

IP

Invasive Plants


Native Oaks struggle to survive under the

canopy of the invasive non-native

Blue Gums.

Invasive Plants


Native Oaks thrive in the absence of invasive Blue Gum


• No Water Quality Control Measures

• No Preservation of Existing Native Species

• No Enhancement of Riparian Corridor

Improper Tree Removals


Tree Evaluation Characteristics

•Species

•Indigenous

•Diameter Class

•Number of Trunk

•Height Class

•Condition Rating

•Crown Class

•Position in the Slope

•Slope Aspect

•Vines on Trunk

•Indigenous Saplings

•Failure Potential

•Target


Failure Potential Criteria

•Tree Structural Characteristics

•Presence of Decay/Defect

•Weight Distribution in the Crown

•Lean

•Previous Failures within the Tree

•Whole Tree Failure Nearby

•Exposure to Wind

•Steepness of Slope


Site 1 – Huff Ave


Site 2 – Cary Ave


Site 3 – St. Marys Ave

San Leandro Creek Hazardous Tree Removal Project Project Purpose 1998 “El Nino” knocked down...

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