HomeMy WebLinkAboutTREE RISK ASSESSMENTS MARINE AVE - W WARRINERTree Risk AssessmentsMarine AvenueWalter Warriner Consulting ArboristKahaluu, HI Redondo Beach, CACity of Newport BeachParks, Beaches & Recreation Commission
Tree Risk Assessments•Likelihood of failure–Improbable, Possible, Probable, Imminent•Likelihood of failure and impact–Very low, Low, Medium, High•Consequences are based on value of target–Negligible, Minor, Significant, Severe•Risk rating: LOW, MODERATE, HIGH, EXTREME
Risk Rating•LOW–Failure unlikely and consequence is negligible–Failure somewhat likely and consequence is minor•MODERATE–Failure likely or very likely and consequence is minor–Failure somewhat likely and consequence is significant•HIGH–Failure likely or very likely and consequence is significant–Failure is likely and consequence is severe•EXTREME–Failure is imminent and consequence is severe
318 Marine Avenue•Eucalyptus polyanthemos•Weak health – 20% Live Crown Ratio•Root conditions•Trunk defects•Leans•Targets•Immediate concerns: Increasing leanDecaying trunkPoor canopy structure
318 Marine Avenue
318 Marine Avenue
318 Marine Avenue
318 Marine Avenue•Risk rating of Moderate•Failure possible within 36 month period•High likelihood of impacting building•Somewhat likely to hit vehicle or people•Consequences would be severe•Removal is recommended
326 Marine AvenueStreet View: 2017 Sidewalk View: 2017
326 Marine Avenue•Eucalyptus camaldulensis –MODERATERisk•Weak health – 40% Live Crown Ratio•Root conditions•Trunk defects•Leans•Targets•Immediate concern: Increasing leanPossible failure
326 Marine AvenueGoogle Street View: 2011
326 Marine AvenueGoogle Street View: 2011
326 Marine AvenueGoogle Street View: 2016
326 Marine AvenueGoogle Street View: 2016
326 Marine Avenue20172017
326 Marine Avenue•Risk rating of Moderate•Failure possible within 36 month period•High likelihood of impacting the building•Somewhat likely to hit vehicle or people•Consequences would be severe•Removal is recommended
Questions ‐DiscussionWalter Warriner Consulting Arborist(808) 439-7489 wwca621@aol.com(310) 378-1764