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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 17 of 20 <br />  <br />c. Excavate a trench approximately 6-12" beyond the area to be disturbed (towards tree), or where roots <br />have been damaged, to a depth of at least 18”, by hand excavationO or with specialized hydraulicP or <br />pneumaticQ equipment. <br />i. Wherever possible, relocate excavations or tunnel beneath encountered roots >1” in diameter. <br />ii. Cut encountered roots cleanly with hand pruners or power saw. Avoid tearing, dislodging of bark <br />(or epidermis) or otherwise disturbing that portion of the root(s) to remain. <br />iii. Immediately backfill with soil to cover, and moisten. <br />iv. If backfilling cannot be completed immediately, cover exposed roots with several layers of untreated <br />burlap (or other similar absorbent material) or sand, mulch, or soil and keep moist until permanent <br />backfilling can be completed. <br />c. Future excavations within the TPZ: <br />i. If possible, relocate any future excavations (irrigation, landscape features, etc.) outside the TPZ and <br />perimeter of previously pruned roots. <br />ii. If encroachment is required within the TPZ, endeavor to avoid pruning roots by tunneling beneath. <br />iii. If relocation or tunneling is not possible, handle any required root pruning as previously described. <br />4. Tree care and maintenance work: (pruning, cabling/bracingR, root pruning, etc.) <br />a. All tree care or maintenance work: <br />i. All tree care work should be performed by a Tree Worker currently certified by the International <br />Society of Arboriculture (ISA) or a current ISA Certified Arborist. <br />ii. All tree care work should be directly supervised by an arborist currently credentialed as at least one <br />of the following: <br />(1) Certified Arborist by the ISA, <br />(2) Board Certified Master Arborist by the ISA, <br />(3) Registered Consulting Arborist by the American Society of Consulting Arborists (ASCA). <br />b. All tree care or maintenance work should be performed in accordance with current industry standardsS. <br />c. Tree pruning: <br />i. Avoid pruning that removes green foliage or live wood immediately before, during or within 2-3 <br />years after construction. <br />ii. Prune to remove large deadwood only, or the minimum required for clearance purposes, in <br />accordance with current pruning standardsT. <br />5. Post-construction: <br />a. Avoid pruning that removes live foliage for several years after construction. Perform only that pruning <br />that is necessary for clearance purposes. <br />b. Arrange for periodic (biannual) inspection of the condition of the trees by a competent Consulting <br />Arborist, and treatment of damaging conditions (insects, diseases, nutrient deficiencies, soil moisture, <br />etc.), as they occur, or as deemed appropriate by the consultant for effective management. <br /> <br />© Copyright, Dryad, LLC 2020 <br /> <br /> <br />   <br />