CITY COUNCIL SPECIAL MEETING AGENDA PACKET 8-11-26

Sam Oakley 231 Old Bernal Avenue Tree Inventory, Valuation, and Construction Guidelines 9/13/2024 10 PO BOX 2412 PISMO BEACH, CA 93448 (415) 407-6995 SAM@OAKLEYGROUP.ORG WWW.OAKLEYGROUP.ORG Tree Protection Fences Trees are often killed, injured or stressed is a direct result of the construction process. A TPZ is to be installed with the parameter of either ten (10) times the diameter of the trunk at four and half (4.5) feet above natural grade or ten (10) feet, whichever is greater. To protect trees, install a six (6) foot high chain-link fence with post driven into the ground every ten to twelve (10-12) feet. The fencing should be located at the TPZ perimeter and not disturbed for any reason. Warning Signage indicating, “Tree Protection Zone: Keep Out,” or similar wording at the direction of the Project Arborist, shall be placed in two (2) visible locations on opposite sides of the tree. All fencing and protection should be in place before any construction begins and left until all landscape grading and trenching is complete. Avoid placing of underground utilities within the drip line of any tree. When utilities are run through the root zone of a tree, horizontal coring should be used instead of trenching. If it is not possible to use horizontal coring, the onsite certified arborist should be contacted before trenching begins. Recommended Services Any tree subjected to the impacts of construction activities should be pruned prior to the commencement of construction. Pruning can be done during the tenure of construction so long as it is deemed necessary by the Project Arborist. All services recommended in this report should be done by a Certified Arborist or Certified Tree Worker in accordance with the ANSI-A300 standards. All pruning necessary to provide clearance during construction should be performed by a Certified Arborist or Tree Worker and not undertaken by construction personnel. Accidental damage to trees should receive immediate corrective attention. Pruning shall cease after construction has stopped and is to occur only as needed for proper maintenance. Any tree subjected to the impacts of construction activities should be fertilized prior to the commencement of construction. Where deep root fertilization has been recommended, a solution of four (4) pounds of Doggett’s 32-7-7 per one hundred (100) gallons of water should be used. This should be injected at the rate of ten (10) gallons per inch of trunk diameter at one- to two hundred (200-300) pounds of pressure. Unless otherwise stated, fertilization should take place between May and September. Mycorrhiza inoculum: Trees are to have roots inoculated with endo/ectomycorrhizal fungal inoculum. Fertilization shall occur prior to, during, and after construction under the direction of the Project Arborist. Page 344 of 373