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Sam Oakley <br />231 Old Bernal Avenue Tree Inventory, Valuation, and Construction Guidelines <br />9/13/2024 9 <br /> <br /> <br />PO BOX 2412 <br />PISMO BEACH, CA 93448 <br /> <br /> (415) 407-6995 <br />SAM@OAKLEYGROUP.ORG <br />WWW.OAKLEYGROUP.ORG <br /> <br />Root Severance Guidelines <br /> <br />Any tree under stress before root severance may not survive this procedure. Consult the <br />onsite Certified Arborist before damaging roots. The purpose of this procedure is to <br />minimize the health impact caused by root severance. By following this procedure, <br />recovery time and the impact on tree health can be reduced. This procedure is to be <br />followed whenever damage to any root two (2) inches or greater in diameter occurs: <br /> <br />1. The root must be covered immediately with a board or burlap and kept moist. <br /> <br />2. Before backfilling, the damaged roots should be clean cut with a handsaw or <br />chainsaw. When possible, the root should be cut back to a lateral (side) root. As <br />soon as severance occurs, cover or wrap the root end with a moist plastic bag <br />secured with tape or rubber band. Backfill as soon as possible. <br /> <br />Root Zone Irrigation Before and After Root Damage <br /> <br />Any tree subjected to the impacts of construction should be irrigated prior to construction <br />activities, during construction, and after construction has ended. In addition, any tree <br />which will have or has had damage to its roots should be irrigated. Three (3) weeks prior <br />to excavation or grading place an adequate irrigation hose at the drip line. Water the CRZ <br />one (1) time per week for six to eight (6-8) hours or as necessary to wet the soil to a depth <br />of two (2) feet. If damage has already occurred, place the irrigation hose in an area where <br />roots have not been disturbed and place a hose over the area that was damaged. Continue <br />this irrigation practice for one (1) month and up to eight (8) months, depending on the <br />severity of the damage and the recommendation of the Project Arborist. <br /> <br />Mulch <br /> <br />Any tree subjected to the impacts of construction should be mulched prior to construction <br />activities, during construction, and after construction has ended. Apply a layer of wood <br />chips at least six (6) inches thick over areas that will be used for traffic or materials storage <br />during construction. If these areas become part of the new landscape, the wood chips will <br />prevent the soil from becoming too compacted and provides a layer of organic material. At <br />no time does mulching constitute adequate protect of the roots for large equipment to enter <br />the CRZ. <br /> <br /> <br /> <br /> <br /> <br /> <br />Page 343 of 373