Thank you for your feedback. If you notice a tree that is either sick or dead, we can follow up with the Parks Department for removal and replacement. However, the Parks Department conducts regular tree prunings throughout the year, and will not accept pruning requests except if the tree is damaged, has a hanging limb, is hitting a utility line, or blocking a traffic sign or signal. If there are any specific trees that do fall into this category, please report their location as specifically as possible and we can follow up with the Parks Department.