The Western Chapter of the International Society of Arboriculture was formed in 1934. It is a nonprofit corporation comprised of over 4000 persons in Arizona, California, Hawaii and Nevada engaged or interested in the practice of arboriculture. The Chapter strives to: -Promote and improve the practice of arboriculture -Stimulate greater public interest in the planting and preservation of trees for shade and ornamental value -Promote public education to develop a greater appreciation for shade and ornamental trees -Recommend and uphold the ISA's "Code of Ethics" established to maintain a high level of practice of those engaged in the profession -Initiate and support scientific education of problems concerned with arboriculture and to publish the results of such investigations -Afford the producers of materials, services and equipment of value to arboriculture an opportunity to advertise, exhibit, and demonstrate their value to arborists -Sponsor an annual meeting and regional conferences and workshops devoted to the exchange of information and to provide Continuing Education Units for Certified Arborists, Tree Workers and Utility specialists as applicable -Be apprised of the most progressive arboricultural information -Network with the most active arborists in the Western States