Remove all materials from the tree pit for the full length and width of the tree pit to the depth
of the tree’s root ball (see diagram pg. 13 Tree Planting and Stake Detail). For excavation of a
tree lawn, excavate an area at least three times the diameter of the root ball in length by the
width of the lawn strip (up to three (3) times the diameter of the rootball), to the dimensions
listed on the permit. Extreme care shall be taken not to excavate to a depth greater than
required. The subgrade below the root ball shall be tamped slightly to prevent settlement. All
ropes, stones, etc. shall be removed from the planting site before backfilling. All excavated
materials shall be removed from the site and disposed of.