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William Subaie earns arborist certification

William Subaie, of Sonoma, successfully completed the "Certified Arborist" examination through the International Society of Arboriculture (ISA) and the local chapter of ISA recently.

The purpose of the ISA certification program is to improve the level of knowledge and standards of practice with the tree care profession. 

All certified arborists carry a identification card.  The ISA is a scientific and educational organization devoted to the dissemination of information in the care and preservation of shade and ornamental trees.