Shade and ornamental trees shall be planted along all streets and driveways, along the riverfront, and within surface parking lots. Within surface parking lots, the tree planting rate shall be at least one (1) tree for every twenty (20) parking spaces. All new trees shall have a minimum diameter of two and one-half (2.5) inches, measured six (6) inches above the ground. Such trees shall be planted forty (40) to sixty (60) feet apart (averaging fifty (50) feet).

All areas of the site not covered by buildings or pavement shall be attractively landscaped with shrubs, trees, lawns and perennial plantings designed to complement views of the riverfront; to enhance the use and appearance of outdoor open spaces, including the publicly accessible outdoor open spaces; and to soften views of the buildings from off site.

The landscaping and tree planting plans shall be subject to site plan review and approval by the Land Use Board.