Loading...
HomeMy WebLinkAboutTR_Arborist_Report_Genesis_Homes_LLC_200129_v1 January 26, 2020 Jim Howton Phone 425 985-2024 Via email: Jimhjim1111@comcast.net SUBJECT: PROPERTY AT 1501 KIRKLAND AVE NE - RENTON, WA EXISTING TREE EVALUATION Dear Jim, I conducted a site visit at the above-referenced site on January 25 to evaluate the overall health of each tree per the City of Renton's Municipal Code Section 4-4-130. Following are the existing significant trees found on the site along with their species, dbh, drip line (radius), overall health. See also Landscape Plan Sheet L-1. 4 significant trees were identified and assessed on the property. The species list is below. According to City of Renton code, a significant tree is a “tree with a caliper of at least six inches (6”), or an Alder or Cottonwood tree with a caliper of at least eight inches (8”). Trees planted within the most recent ten (10) years shall qualify as significant trees, regardless of the actual caliper.” Each tree in this report was visited. Tree diameters were measured by the surveyor and are shown in the table below and on the tree retention plan. Each tree was visually examined for defects and vigor. The tree assessment procedure involves the examination of many factors: - The crown of the tree is examined for current vigor. This is comprised of inspecting the crown (foliage, buds and branches) for color, density, form, and annual shoot growth, limb dieback and disease. The percentage of live crown is estimated for coniferous species only and scored appropriately. - The bole or main stem of the tree is inspected for decay, which includes cavities, wounds, fruiting bodies of decay (conks or mushrooms), seams, insects, bleeding, callus development, broken or dead tops, structural defects and unnatural leans. Structural defects includes crooks, forks with V-shaped crotches, multiple attachments, and excessive sweep. - The root collar and roots are inspected for the presence of decay, insects, and/or damage, as well as if they have been injured, undermined or exposed, or original grade has been altered. A ‘viable’ tree is “a significant tree that a qualified professional has determined to be in good health, with a low risk of failure due to structural defects, is wind firm if isolated or remains as part of a grove, and is a species suitable for its location.” Tree considered ‘non-viable’ are trees that are in poor condition due to disease, age-related decline, have significant decay issues and/or cumulative structural defects, which exacerbate failure potential. TREE RETENTION CALCULATION A total of 4 significant trees were identified on the subject property, one of them is dead. As shown in the City of Renton tree calculation worksheet, the dead tree is part of the calculations. No Landmark trees were on the site. The property is within the ‘Residential-14’ (R-14) zoning code classification. 20% of existing viable significant trees are required to be retained. 4 existing trees – 1 dead tree = 3 significant trees, 3 X 20% = 0.6 significant trees required to be retained. 1 existing significant tree is proposed to be retained. SIGNIFICANT TREES ON SITE TREE # SPECIES DBH DRIP LINE HEALTH REMOVED / RETAIN 001 Cedar 2x18" 12' dia. Good Retain 002 Cedar 10" 9' dia. Good Offsite 003 Douglas Fir 30" 20' dia. Good Offsite 004 Unknown 18" 0' Dead Remove 005 Cedar 16" 10' Good Offsite 006 Elm 10",15”,22” 15' Good Remove 007 Spruce 16” Varies Good Remove There is no warranty suggested for any of the trees subject to this report. Respectfully, Jeff Varley Landscape Architect Varley Varley Varley 19819 30th Drive SE Bothell, WA 98012