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Overview of Tree Mitigation Strategies for Bel-Red Light Rail Extension Project

This document provides an overview of the tree mitigation processes as part of the Bel-Red Light Rail Extension project. It outlines the criteria established by the City of Bellevue for tree preservation, including methodologies for tree surveys and assessments. Discussion includes the regulations that apply to critical areas and development requirements, as well as best management practices for tree preservation. Additionally, it details species selection for replanting, the specific requirements for tree removal, and examples of mitigation strategies used in various locations, notably around 130th Station.

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Overview of Tree Mitigation Strategies for Bel-Red Light Rail Extension Project

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  1. East Link Extension Bel-Red Tree Mitigation Light Rail Permitting Citizen Advisory Committee July 2, 2014

  2. Bel-Red Permit Tree Mitigation Overview • City of Bellevue Tree Mitigation Criteria • Tree Survey Methodology • Summary

  3. City of Bellevue Criteria • Three Different Regulations Apply • Critical Areas • Bel-Red Overlay • General Development Requirements • City of Bellevue Best Management Practices (BMPs) for tree preservation • In Critical Areas • Three new conifers for one tree removed

  4. Methodology • Tree Assessment • Tree location survey – all trees greater than 4 in diameter breast height • Tree identification classification • Species • Category • Significant • Health • Tree removal overview • Trees within the foot print • Clear Zone - 34ft from centerline

  5. Tree Survey & Removal - Summary

  6. Bel-Red Tree Replanting Summary

  7. Tree Specifications • Pyramidal European Hornbeam, Summit Ash, Crape Myrtle, English Oak, Greenspire Little Leaf Linden, Ginkgo, and Venus Dogwood 2-2 ½” caliper Min. 7’ ht • Weeping Yellow Cedar, Shoreline, Austrian Pine and Mountain Hemlock Min. 12-14’ ht • Deciduous Trees Min. 2” caliper

  8. Tree Mitigation Example West Tributary of Kelsey Creek

  9. Tree Mitigation Example West Tributary of Kelsey Creek

  10. Tree Mitigation Example West Tributary of Kelsey Creek

  11. Tree Mitigation Example 130th Station

  12. Tree Mitigation Example 130th Station

  13. Tree Mitigation Example 130th Station

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