Protected Trees are defined as: Any single trunk tree 38 inches or greater in circumference Any multi-trunk tree which has at least one trunk 38 inches or greater in circumference OR where the measurements of the multi-trunks added together equal at least 113 inches The circumference of the tree is measured four feet above the ground. Removal or damage of a protected tree without an approved permit is unlawful and can result in fines or penalties (SMC 19.94.160).