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35570 Palomares Rd.
<br />Castro Valley CA 94552
<br />PHONE: (510) 538-6000
<br />FAX: (510) 538-6001
<br />E-MAIL: tyoung@dryadllc.com
<br />WEB SITE: www.dryadllc.com
<br />Dryad, LLC
<br />September 15, 2020
<br />Torrey Young, Dryad, LLC
<br />19053-20078 Resurrection Greek Orthodox Church
<br />Site: Dublin Canyon Rd., north of Laurel Creek Dr.
<br />Page 19 of 20
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<br />ENDNOTES:
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<br />A Diameter: DSH - Diameter at Standard Height or DBH – Diameter at Breast Height, or approximately 4.5 feet (54 inches) above grade.
<br />These references are synonymous and commonly used as a point of reference in determining tree size and as the basis for a myriad of
<br />calculations.. Diameter measurement location may vary depending upon tree structural character, jurisdictional codes or project guidelines,
<br />etc. In some cases, diameters may be estimated due to inaccessibility or other limitations. B Height, distance and/or diameter measurements: Diameters were measured via calculating diameter tape measurement of circumference.
<br />Height and distance (canopy) measurements were taken with a laser rangefinder/hypsometer (TruPulse 360R or OptiLogic LH400). If
<br />measured, the reported height was averaged from several sets of measurements. Where tree trunks or views were obstructed or
<br />inaccessible, either or both heights and diameters may have been estimated. C GPS data: GPS (Global Positioning System) data was collected with a Garmin 64 or 64st GPS device, described by the manufacturers as
<br />accurate to within 9 meters. Accuracy may vary because of weather, canopy cover, etc. This data is intended only to assist with tree
<br />location and is not intended to be of survey precision. D Acute-angle attachments (crotches): Branch/limb, limb/trunk, or codominant trunks originating at acute angles from each other. Bark
<br />often remains between such attachment, preventing the development of a branch-bark ridge (branch collar) or grafting of the parts. The
<br />inherent weakness of such attachments increases with time, through the pressure of opposing growth and increasing weight of wood and
<br />foliage, frequently resulting in failure. E Codominant: Refers to branch, limbs or trunks of similar size and height or length competing for the same space and/or role within the
<br />tree's architecture; frequently originating at acute angles from each other, with bark remaining (included) between the components (in the
<br />crotch). Such attachments are inherently weak and worsen with time through the pressure of opposing growth and the increasing weight of
<br />wood and foliage, frequently resulting in the failure of one or both (all). F Root collar (Trunk flare. root flare, root crown): One of several accepted terms describing the junction of trunk and buttress roots at the
<br />original soil grade. Synonymous terms: root crown, root collar, root flare, trunk flare. G Canopy: One of several accepted terms describing that area of a tree which includes limbs, branches, foliage, and to a lesser degree,
<br />upper stems (synonymous with `foliage crown'). H Twig growth: The length of annual growth of a twig (smallest branch), measured between the twig tip and the last bud scar; also may
<br />include measuring previous years’ growth by measuring between bud scars; often used as a generalized measure of tree vigor based upon
<br />expectations for the species, and also as a rough guide to schedule of impacts or events affecting vigor. I Dripline area: The soil area surrounding the tree trunk whose outer perimeter is defined by the unaltered length of the outermost branch
<br />tips. J Tree Protection Zone: (TPZ) a delineated area of the rooting zone of a tree or group of trees to be protected from encroachment by
<br />construction activities. Such activities may include excavation or grading, vehicle, equipment and pedestrian traffic; storage of vehicles,
<br />building materials, soil or debris; or disposal of phytotoxic materials. K American National Standards Institute, 2012. Standard Practices for Tree Care Operations - Management of Trees and Shrubs During
<br />Site Planning, Site Development and Construction (ANSI A300, Part 5, current revision); International Society of Arboriculture, Best
<br />Management Practices, Managing Trees During Site Planning, Site Development and Construction (current revision). L Phytotoxic: (phytotoxin) any substance or material capable of killing plant cells, parts, plants in their entirety.
<br />M Mulch: Organic materials (e.g., brush chips, fir bark) spread upon the soil for a variety of benefits: aesthetics, retains soil moisture,
<br />moderates soil temperatures, improves soil structure and increases fertility, protects against compaction, suppresses weeds, etc. (Note:
<br />Elsewhere, definition may include non-organic materials.) N Field capacity: The maximum volume of moisture a soil can hold after drainage has occurred. An expression of the water-holding
<br />capacity and moisture status of soils. O Hand excavation: Manual soil excavation via the use of hand tools only. Use of hand tools for initial excavation should be avoided. Hand
<br />tools shall not be used in a manner that results in breakage of roots, bark penetration or separation of bark from roots. Hand tool use should
<br />be limited to small tools (e.g., spade, trowel) for minor excavations or in restricted spaces. Picks, mattocks, digging bars or similar
<br />implements requiring striking the earth shall not be used for excavation. Hand shovels may be used for minor excavations, or where access
<br />is limited for vacuum equipment, or hydraulic slurry cannot be flushed out of the excavation. Such usage shall not result in breakage of
<br />roots, bark penetration or separation of bark from roots. P Hydraulic excavation: Soil excavation performed using pressurized, focused water via 1) pressure washer, portable fire pump, or similar
<br />equipment or 2) hydraulic truck-mounted equipment (Hydra-vac). Equipment should be used at the minimum pressure required to remove
<br />the soil from around roots and out of the resulting excavation void, without causing breakage of roots, bark penetration or separation of bark
<br />from roots. Q Pneumatic excavation: Soil excavation performed via supersonic compressed air excavation with a tool called an air spade. This tool
<br />removes soil from roots (or pipes, wires, etc.) with little or no damage to the roots (or utilities). Soil is separated and blown away via highly
<br />focused, supersonic velocity compressed air, which separates the soil particles without penetrating roots. R Cabling & Bracing: The installation of hardware in and/or about trees for the purpose of providing supplemental support of weak, defective
<br />or otherwise suspect limbs and/or stems; supporting of newly planted trees; bracing cracks; propping trees or limbs, or otherwise providing
<br />support. The installation of cables, bolts and other hardware in trees is intended to reduce the potential for failure (breakage/uprooting).
<br />Such bracing does not permanently remedy structural weaknesses, and is not a guarantee against failure. The trees and hardware must be
<br />inspected periodically for hardware deterioration, adequacy and changes in the tree's and site condition. S Current industry standards: The most current and applicable publications of 1) Best Management Practices, International Society of
<br />Arboriculture; 2) American National Standards Institute, A300 and Z133 (all parts).
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