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Clark tree risk assessment form.pdfT.Q%A Basic Tree Risk Assessmentor Client Date � � ( Time )=t-iq PM. Address/Tree to alio 1 I � � °`�+ � ' l cil d f Tree' no. Sheet of Tree! o t w I+" ) dbhe � Height i % Crown spread dia. 3© Assessor(s) frame _Tools used J -- Target Assessment Target zone Occupancy ;; e rate $' c ti x 1—rare G Target description a c ; x 2—occasional •c F r^ 3—frequent i fi r 4 -constant a E a 2 R 2y F i G LlNIE5 Al L", 0- -VC) (�S 4 3 WENTS WWYE Site Factors History of failures Topography Flat❑ Slope*---:�,% Aspect Site changes None[] Grade change❑ Site clearing❑ Changed soil hydrology❑ Root cuts[] Describe Soil conditions Limited volume ❑ Saturated ❑ Shallow Compacted Pavement over roots % Describe Prevailing wind direction IS Common weather Strong windslit ice ❑ Snow ❑ Heavy rain Describe Tree Health and Species Profile Vigor Low ❑ Normal ❑ High ❑ Foliage None -i ...._.. ... Chlorotic % Necrotic % (seasonal) ❑ Nona e (dedeadf,� Normal % e Pests Abiotic Species failure profile Branches ❑ Trunk ❑ Roots ❑ Describe Load Factors dd� a�...., ..... __._...__ ........... ... - .._.._ ._�._ .._......... Windexposure Protected❑ Partial❑ Full Wind funneling❑ Relative crown size Small[]Medium❑ Large Crowndensity Sparse[] Normal❑ Dense❑ Interior branches Few❑ Normal❑ Dense[] Vines/Mistletoe/Moss❑ Recent or planned change in load factors. Tree Defects and Conditions Affecting the Likelihood of Failure — Crown and Branches — Unbalanced crown ❑ LCR �__m"i' i Cracks ❑ Lightning damage ❑ Dead twigs/branches Io -o %overalN Max. dia. rZ. Codominant ❑ Included bark ❑ Broken/Hangers Number Max. dia. Weak attachments ❑ Cavity/Nest hole _/ circ. Carer -extended branches ❑ Previous branch failures ❑ Similar branches present ❑ Pruning history Crown cleaned 11Thinned [3Raised ❑ Dead/Missing bark Cankers/Galls/Burls ❑ Sapwood damage/decay ❑ Reduced ❑ Topped ❑ Lion -tailed ❑ Conks ❑ Heartwood decay ❑ Flush cuts ❑ Other Response growth Main concerns ORO "t R . tLU PLel �f P-111 1d"+e it o • .. O,, w 11 , Load on defect N/A ❑ Minor ❑ Moderate ❑ Significants. Likelihood of failure Improbable ❑ Possible ❑ Probable ui Imminent ❑ —Trunk — — Roots and Root Collar — Dead/Missing bark Abnormal bark texture/color ❑ Collar buried/Not visible ❑ Depth Stem girdling ❑ Codominant stems ❑ Included bark ❑ Cracks ❑ Dead Decay ❑ Conks/Mushrooms ❑ Sapwood damage/decay ❑ Cankers/Galls/Burls ❑ Sap ooze 0 Ooze 12� Cavity ❑ % circ. Lightning damage ❑ Heartwood decay[] Conks/Mushrooms Cracks Cut/Damaged roots ❑ Distance from trunk Cavity/Nest hole % circ. Depth Poor taper ❑ Root plate lifting ❑ Soil weakness ❑ Lean ° Corrected?. Response growthResponse growth Mainconcern(s) "f"DS7 � i w w &9K \AiLA- Main concern�(s) fir" tC e litiNrvl w Ut l ko CIP A Load on defect N/A ❑ Minor ❑ Moderate ❑ Significantyf Load on defect N/A ❑ Minor ❑ Moderate ❑ Significants Likelihood of failure Likelihood of failure Improbable❑ Possible ❑ Probable Imminent ❑ Improbable❑ Possible ❑ Probable Imminent ❑ Page I of 2 Risk Categorization Matrix 1. Likelihood matrix. Matrix2. Risk rating matrix. Likelihood of Consequences of Failure Failure & Impact Negligible Minor Significant Severe Likelihood Low Moderate High Extreme Likely E Moderate High High cu 41 J2 Low Failure Moderate. Impact Low Failure & Impact (from Matrix 2) Consequences Low 0 Risk rating of part V tg Tree part Conditions of concern t: 0. M U. L I Target protection 2 CL .9 A9 Z E L E t 3 W 2 .2 E ton z C tW !A qA (from Matrix 2)_ i �QA�t H A 1 j �7 2- P40 `2, 7# Low TR0AY-- FF11LOFt AHIP- 2 :*Jff(L1FNr Sid 2 - Day 8 �?' 3 t1j o (f 3?�,t T a lfj� COUNZ- , 4 Matrix 1. Likelihood matrix. Matrix2. Risk rating matrix. Likelihood of Consequences of Failure Failure & Impact Negligible Minor Significant Severe Very likely Low Moderate High Extreme Likely Low Moderate High High Somewhat likely Low Low Moderate Moderate. Unlikely Low Low Low Low Notes, explanations, descriptions Mitigation options'-- V:�ffvlv6jr) N Residual risk WVj Residual risk Residual risk Residual risk Overall tree risk rating Low 0 Moderate 13 High 0 Extreme 13 Work priority 1)e 2 D 3 0 4 11 Overall residual risk Low W, Moderate 0 High 13 Extreme 0 Recommended inspection interval Data*nal 0 Preliminary Advanced assessment needed *o OYes-Ty pe/ Reason inspection limitations one OVisibility OAccess E]Vines []Root collar buried Describe This datasheet was produced by the International Society of Arboriculture (ISA) and is intended for use by Tree Risk Assessment Qualified (IRAQ) arborists — 2013 Page 2 of 2