D.C. Mun. Regs. tit. 24 § 199
When used in this chapter, the following term shall have the meaning ascribed below:
Invasive Plant Species - one of the following plants: Grasses and Sedges
Bamboos (Bambusa vulgaris, Phyllostachys aurea and Pseudosasa japonica)
Bog Bulrush (Schoenoplectus mucronatus)
Common Reed (Phragmites australis)
Japanese Stiltgrass (Microstegium vimineum)
Wavyleaf Basketgrass (Oplismenus hirtellus ssp. undulatifolius)
Herbaceous Forbs
Beefsteak Plant (Perilla frustescens)
Canada Thistle (Cirsium arvense)
Chinese Lespedeza (Lespedeza cuneata)
Common Daylily (Hemerocallis fulva)
Dame's Rocket (Hesperis matronalis)
European Stinging Nettle (Urtica dioica)
Fig Buttercup (Ficaria verna)
Garlic Mustard (Alliaria petiolata)
Ground Ivy (Glechoma hederacea)
Japanese Knotweed (Fallopia japonica)
Nodding Star of Bethlehem (Ornithogalum nutans) and Sleepy dick
(Ornithogalum umbellatum)
Purple Loosestrife (Lythrum salicaria)
Spotted Knapweed (Centaurea stoebe ssp. micranthos)
Shrubs and Subshrubs
Amur Honeysuckle (Lonicera maackii)
Autumn Olive (Elaeagnus umbellata)
Japanese Barberry (Berberis thunbergii)
Japanese Meadowsweet (Spiraea japonica)
Linden Viburnum (Viburnum dilatatum)
Morrow's Honeysuckle (Lonicera morrowii)
Multiflora Rose (Rosa multiflora)
Privets (Ligustrum obtusifolium, L. ovalifolium, L. sinense and L. vulgare)
Wineberry (Rubus phoenicolasius)
Winged Burning Bush (Euonymus alatus)
Vines Black Swallow-Wort (Cynanchum louiseae)
Chinese Wisteria (Wisteria sinensis)
Chocolate Vine (Akebia quinata)
Common Periwinkle (Vinca minor)
English Ivy (Hedera helix)
Japanese Honeysuckle (Lonicera japonica)
Japanese Hop (Humulus japonicus)
Japanese Wisteria (Wisteria floribunda)
Kudzu (Pueraria montana var. lobata)
Mile-a-Minute (Persicaria perfoliata)
Oriental Bittersweet (Celastrus orbiculatus)
Pale Swallow-Wort (Cynanchum rossicum)
Porcelainberry (Ampelopsis brevipedunculata)
Sweet Autumn Virginsbower (Clematis terniflora)
Winter Creeper (Euonymus fortunei)
Downtown Streetscape Area - the Downtown Urban Renewal Area, as defined in the Zoning Regulations, Title 11 of the District of Columbia Municipal Regulations, and the west side of North Capitol and both sides of all other boundary streets of the Downtown Urban Renewal Area.
Excavation - any work in the surface or subsurface of any Public Space or Public Right-of-Way, including opening the Public Right-of-Way; installing, servicing, repairing, or modifying any Public Space or Public Right-of-Way Facility or Facilities in or under the surface or subsurface of any Public Space or Public Right-of-Way; and restoring the surface and subsurface of any Public Space or Public Right-of-Way.
Public Space or Public Right-of-Way Facility or Facilities- any and all cables, cabinets, ducts, conduits, converters, equipment, drains, handholds, manholes, pipes, pipelines, splice boxes, surface location markers, tracks, tunnels, utilities, and other appurtenances or tangible things owned, leased, operated, or licensed by an Owner or Person, that are located or are proposed to be located in the Public Right-of-Way. (For the purposes of this definition, the terms "Owner" and "Person" shall have the meanings ascribed in Subsection 3499.1.)
Person - any individual, corporation, firm, agency, association, organization, utility company, and any government agency or instrumentality.
Personalized Marker - an engraved sidewalk treatment of granite or other suitable material approved by the Director that is inscribed with a profile likeness and other inscriptions in recognition of an individual selected by the Make a Difference Foundation pursuant to the Make A Difference Selection Committee Establishment Act of 1998, D.C. Code §§ 9-1215.01 (2001) (formerly codified at D.C. Code §§ 7-231 et seq. (1999 Supp.)).
Public Parking - the area of public space between the property line, which may or may not coincide with the building restriction line, and the edge of the actual or planned sidewalk that is nearer to the property line, as the property line and sidewalk are shown on the records of the District.
Public Right-of-Way - the surface, the air space above the surface (including air space immediately adjacent to a private structure located on Public Space or in a Public Right-of-Way), and the area below the surface of any public street, bridge, tunnel, highway, lane, path, alley, sidewalk, or boulevard
Public Space - all the publicly-owned property between the property lines on a street, park, or other public property as such property lines are shown on the records of the District, and includes any roadway, tree space, sidewalk, or public parking between such property lines.
Sidewalk - the portion of the surface space located between the curb line and the building line intended for the use of pedestrians.
Tree fence - a low enclosure of an open design that separates the sidewalk from the tree space and is designed and constructed in accordance with DDOT guidelines.
Tree space - an unpaved portion of the sidewalk that is reserved by the District government for the planting of a tree.
Tree space beautification - a visual improvement made to a tree space using live plant materials other than trees, such as grass, tropical flowers, or other shallow rooted plants having decorative flowers or foliage.
D.C. Mun. Regs. Tit. 24, § 199