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9/2/2020 <br /> <br />32 93 00 PLANTS Page 13 of 17 <br />3.3 GENERAL REQUIREMENTS FOR ALL PLANTING TYPES <br />A. Before planting, verify that root flare is visible at top of root ball according to ANSI Z60.1. If <br />root flare is not visible, remove soil in a level manner from the root ball to where the top-most <br />root emerges from the trunk. After soil removal to expose the root flare, verify that root ball still <br />meets size requirements. <br />B. Remove stem girdling roots and kinked roots. Remove injured roots by cutting cleanly; do not <br />break. <br />C. Obstructions: Notify Architect if unexpected rock or obstructions detrimental to trees or shrubs <br />are encountered in excavations. <br />D. Before planting, obtain Architect's acceptance of finish grading; restore planting areas if eroded <br />or otherwise disturbed after finish grading. <br />E. Excavate planting pits with sides sloping inward at a 45-degree angle. Excavations with vertical <br />sides are not acceptable. Trim perimeter of bottom leaving center area of bottom raised slightly <br />to support root ball and assist in drainage away from center. Do not further disturb base. Ensure <br />that root ball will sit on undisturbed base soil to prevent settling. Scarify sides of planting pit <br />smeared or smoothed during excavation. <br />1. Do not excavate deeper than depth of the root ball, measured from the root flare to the <br />bottom of the root ball. <br />2. If area under the plant was initially dug too deep, add soil to raise it to the correct level and <br />thoroughly tamp the added soil to prevent settling. <br />3. Maintain required angles of repose of adjacent materials as shown on the Drawings. Do <br />not excavate subgrades of adjacent paving, structures, hardscapes, or other new or existing <br />improvements. <br />4. Maintain supervision of excavations during working hours. <br />5. Keep excavations covered or otherwise protected when unattended by Installer's personnel. <br />6. If subdrainage is shown on Drawings or required under planting areas, insure contact <br />between the root ball and subdrain pipe. <br />F. After excavation examine the area for potential drainage difficulties matched to plant varieties <br />and inform the Architect of potential poorly drained areas. Notify Architect if subsoil conditions <br />evidence unexpected water seepage or retention in tree or shrub planting pits. Discuss variations <br />in the depth of planting with the Architect prior to planting. <br />G. Fill excavations with water and allow it to percolate away before positioning trees and shrubs. <br />H. Set out and space plants according to the planting plans and notes in even rows with triangular <br />spacing unless otherwise indicated. <br />I. When planting on slopes, set the plant so the root flare on the uphill side is flush with the <br />surrounding soil on the slope; the edge of the root ball on the downhill side will be above the <br />surrounding soil. Apply enough soil to cover the downhill side of the root ball. <br />J. Work soil around roots to eliminate air pockets and leave a slight saucer indentation around plants <br />to hold water. <br />DocuSign Envelope ID: 7D9ACD4F-8F6C-42B6-9ADB-C60032DB6D03