§ 7.3. Street Trees & Streetscape Design.

1.

Intent. To line all new streets with a consistent and appropriate planting of trees, pavement design, and identity to establish tree canopy for environmental benefit and a sense of identity for all new streets.

2.

Applicability. The requirements herein apply to all new development requiring Regulating Plan approval.

3.

Streetscape Design Submittal. A consistent streetscape design shall be submitted for approval for all new streets within the development. At a minimum, the submittal shall include the following:

(1)

Street Trees. Trees meeting the minimum requirements of 7.3.4, below, shall be included in the streetscape design, with details related to tree pits, tree planting to meet the requirements of 7.2.5 Tree Installations.

(1)

Sidewalk Pavement Design. Sidewalk paving materials and pattern shall be set for each street type (refer to 2.0 Street Types).

(2)

Street Furnishings. Benches, seat walls, planters, planter fences, trash receptacles, and bicycle racks at the least shall be specified and quantities and locations listed for each street type (refer to 2.0 Street Types).

(3)

Landscape Design. Ground plane vegetation shall be designated for any landscape bed areas, planter areas, and tree wells.

(4)

Lighting. Pedestrian and vehicular lighting shall be specified and locations and quantities noted.

(5)

Identity Elements. Any other elements designed to establish the identity of each Street, such as banners, pavement markers, artwork, or signage, shall be included in the streetscape design submittal.

4.

Minimum Street Tree Requirements. The following standards apply to the installation of street trees.

(1)

Clear Branch Height. Minimum clear branch height is eight feet.

(2)

Street Tree Type. Medium and large shade trees are permitted to be installed as street trees. Refer to the list of permitted tree types in Table 7.3 (4).

(3)

Street Tree Spacing. Street trees shall be planted as follows.

(a)

Each Lot is required to have one tree for every 40 feet of street frontage with a minimum of one street tree per street frontage.

(b)

Spacing.

(i)

Large trees must be spaced a minimum of 30 and a maximum of 60 feet on center.

(ii)

Medium trees must be spaced a minimum of 20 and a maximum of 40 feet on center.

(c)

Limited Distance between Curb and Sidewalk. Where the distance from the back of the curb to the edge of the right-of-way or property line is less than eight feet with a sidewalk, Applicant shall work with the City Arborist to determine the appropriate tree species.

(i)

Planning Commission may waive the street tree requirement in spaces less than nine feet.

(4)

Tree Wells. In commercial districts, where the sidewalk extends from the back of curb to the property line, tree wells shall be utilized.

(a)

For tree wells adjacent to sidewalks five feet wide or less, open pit is not permitted.

(i)

The opening must be covered with a tree grate or pervious pavement.

(ii)

The opening in a tree grate for the trunk must be expandable.

Table 7.3 (4). List of Permitted Tree Species.
Permitted Medium Trees
Fairview Maple	Acer platanoides 'Fairview'
Sensation Boxelder	Acer negundo 'Sensation'
Briotii Horsechestnut	Aesculus x carnea 'Briotii'
Chinese Fringetree	Chionanthus retusus
Yellowwood	Cladrastis kentukea
Manchurian Ash	Fraxinus mandshurica 'Mancana'
Goldenraintree	Koelreuteria paniculata
Fruitless Mulberry	Morus alba 'Fruitless'
Mayday Tree	Prunus padus
Purple Robe Locust	Robinia pseudoacacia, 'Purple Robe'
Lacebark Elm	Ulmus parvifolia
Frontier Elm	Ulmus parvifolia 'Frontier'
Permitted Large Trees - Native
White Fir	Abies concolor
Rocky Mountain Maple	Acer glabrum
Bigtooth Maple	Acer grandidentatum
Boxelder	Acer negundo
Serviceberry	Amelanchier utahensis
Netleaf Hackberry	Celtis reticulata
Mountain Mahogany	Cercocarpus ledifolius
Desert Willow	Chilopsis linearis
Douglas Hawthorn	Crataegus douglasii
Singleleaf Ash	Fraxinus anamala
Utah Juniper	Juniperus osteosperma
Rocky Mountain Juniper	Juniperus scopulorum
Engelmann Spruce	Picea engelmannii
Blue Spruce	Picea pungens
Bristlecone Pine	Pinus longaeva
Lodgepole Pine	Pinus contorta
Pinyon Pine	Pinus edulis
Ponderosa Pine	Pinus ponderosa
Narrowleaf Cottonwood	Populus angustifolia
Fremont Cottonwood	Populus fremontii
Aspen	Populus tremuloides
Chokecherry	Prunus virginiana
Douglas Fir	Pseudotsuga menziesii
Oak Gambel	Quercus gambelii
Peachleaf Willow	Salix amygdaloides
Permitted Large Trees
Sycamore Maple	Acer pseudoplatanus
Legacy Sugar Maple	Acer saccharum 'Legacy'
Catalpa	Catalpa speciosa
Hackberry	Celtis occidentalis
Riversii Beech	Fagus sylvatica 'Riversii'
Cimmaron Ash	Fraxinus pennsylvanica 'Cimmaron'
Marshall Seedless Ash	Fraxinus pennsylvanica 'Marshall Seedless'
Patmore Ash	Fraxinus pennsylvanica 'Patmore'
Gingko	Gingko biloba 'Princeton Sentry'
Honeylocust	Gleditsia triacanthos
Kentucky Coffeetree	Gymnocladus dioicus
London Planetree	Platanus x acerifolia
Japanese Pagodatree	Sophora japonica
Sterling Silver Linden	Tilia tomentosa 'Sterling'
Accolade Elm	Ulmus carpinifolia 'Accolade'
Japanese Zelkova	Zelkova serrata