Removal Guidelines The Urban Forestry Administration (UFA) currently removes approximately 2,000 street trees in the District each year. "Street trees" are trees located between the curb and sidewalk. UFA removes trees that are: Dead Dying Unsound ("Unsound" trees generally have one or more structural and/or root defects which cannot be corrected.) Exceptions to these removal guidelines include: Trees that are inappropriate for a particular tree box space. For example, a tree that was planted without a permit next to a stop sign that presents a hazard for motorists and/or pedestrians. Female Gingko trees that are removed by signed petition submitted by residents and the affected Advisory Neighborhood Commission under the "Female Gingko Tree Removal/Replacement Program" described on this website. Severely deformed trees located underneath power lines that are removed and replaced by the "Right Trees Right Place Program" described on this website. The UFA generally removes trees in a three-part process: removal of the top, or branches of the tree better know as the "crown"; removal of the trunk, or the mainstem of the tree; and removal of the stump. UFA follows this removal sequence because it uses different equipment for each part of the tree, especially if the tree is large.