04 ATTACHMENT 6 - Laserfiche WebLink

35570 Palomares Rd. Castro Valley CA 94552 PHONE: (510) 538-6000 FAX: (510) 538-6001 E-MAIL: tyoung@dryadllc.com WEB SITE: www.dryadllc.com Dryad, LLC September 15, 2020 Torrey Young, Dryad, LLC 19053-20078 Resurrection Greek Orthodox Church Site: Dublin Canyon Rd., north of Laurel Creek Dr. Page 15 of 20 TREE PROTECTION REQUIREMENTS OF THE CITY OF PLEASANTON: Excerpted from the City of Pleasanton Municipal Code, Title 17 Planning and Related Matters, Chapter 17.16 Tree Preservation (Revised: July, 2012): “17.16.070 Protection of existing trees. All persons shall comply with the following precautions: A. Prior to the commencement of construction, install a sturdy fence at the dripline of any tree which will be affected by the construction and prohibit any storage of construction materials or other materials inside the fence. The dripline shall not be altered in any way that increases the encroachment of the construction. B. Prohibit excavation, grading, drainage and leveling within the dripline of the tree unless approved by the director. C. Prohibit disposal or depositing of oil, gasoline, chemicals or other harmful materials within the dripline or in drainage channels, swales or areas that may lead to the dripline. D. Prohibit the attachment of wires, signs and ropes to any heritage tree. E. Design utility services and irrigation lines to be located outside of the dripline when feasible. F. Retain the services of a certified or consulting arborist for periodic monitoring of the project site and the health of those trees to be preserved. The certified or consulting arborist shall be present whenever activities occur that pose a potential threat to the health of the trees to be preserved. G. The director shall be notified of any damage that occurs to a tree during construction so that proper treatment may be administered. (Ord. 1737 § 1, 1998)” TREE PRESERVATION RECOMMENDATIONS: 1. I recommend that the guidelines in the most current revisions of the following publications be followed as closely as possible, within the limitations of the requirements of the City of Pleasanton1. A. American National Standards Institute, Tree, Shrub and Woody Plant Management Standard Practices, Management of Trees & Shrubs During Site Planning, Site Development and Construction, American National Standards Institute (ANSI A300 - Part 5) (most current revision). B. Kelby Fite and E. Thomas Smiley, Best Management Practices, Managing Trees During Construction, International Society of Arboriculture (most current revision). C. Matheny, Nelda P.; Clark, James R.; 1998. Trees and Development, International Society of Arboriculture. 2. Where excavation, grade changes or other encroachment will occur within the dripline areasI of the trees, call for arborist inspection and supervision and follow the recommendations below and the General Construction Site Tree Preservation Guidelines (TPG, pg. 16) as closely as possible. Trees to be removed: 1. Remove to grade only, when possible and when within the dripline areas of trees to be retained. 2. Stump grinding within the dripline area of adjacent trees to be retained should not exceed 4-6” below grade and only include the primary body of the stump (i.e., do not chase surface roots). 3. If surface root removal is required within the dripline areas of trees to be retained, remove only by hand. Trees to be retained: 1. Riparian Corridor: Install continuous protective fencing (refer to the TPG, pg.16 ) at the entire north and east perimeter of the site, as far south from the limit of the Riparian Corridor as possible, but at last no closer to trees than the dripline perimeter. 2. Mulch: Install organic mulch, preferably tree service brush chips, throughout the area behind protective fencing (refer to TPG, pg. 16). 3. All trees to be retained: A. Irrigation: i. Before implementing root pruning or excavation, irrigate the dripline areas of all trees to be retained to wet the soil to near field capacity to a depth of approximately 18 inches. ii. For any trees root pruned, maintain the soil moisture at near field capacity within the dripline areas or beyond. iii. Continue irrigation to maintain soil moisture (as above) throughout the duration of construction, or until sufficient rainfall occurs. B. Root pruning (for excavation): i. Pre-trench and root prune as described in the TPG (pg. 16).