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A. Applicability:
1. Hard surfaced parking lots with 15 or more parking spaces shall provide landscaping in accordance with the provisions of this section. The following graphic depicts landscape location required and corresponding standards identified in this chapter.
2. Parking lots with less than 15 parking spaces are exempt from parking lot landscaping but shall provide the required landscape yards and landscape buffers.
B. Interior Parking Lot Landscaping:
1. Minimum Area: A minimum of 5% of the parking lot shall be interior parking lot landscaping in the locations identified below and dispersed throughout the parking lot. Landscaping areas located along the perimeter of a parking lot shall not be included toward satisfying this requirement.
2. Location: Interior landscape areas shall be provided in the following locations:
a. At each end of a parking row containing 6 stalls or more, where not abutting required perimeter landscaping.
b. Parallel to parking lot stalls, at a rate of 1 interior landscape area for every 6 parking spaces, or along the interior length of double-loaded parking rows.
3. Size: Interior landscape areas shall have a minimum width equal to the width of average parking stall within the parking lot, as measured from the inside of the curbing, and shall have a minimum length equal to the length of the abutting parking spaces. Where interior landscape areas do not abut parking spaces, a minimum length of 10' is required.
4. Planting Requirements:
Interior Landscape Areas | |
Shade trees | A minimum of 1 tree is required per interior landscape area. Additional trees are required at a rate of 1 tree for every additional 140 square feet in each required interior landscape area. |
Shrubs | A minimum of 2 shrubs are required per interior landscape area. Additional shrubs are required at a rate of 2 shrubs for every additional 140 square feet in each landscape area. Adapted or native ornamental grasses or wildflowers with a minimum height of 3' may be used as an alternative. |
Ground cover/ Mulch | Landscape area outside of shrub masses shall be established in ground cover or mulched consistent with the standards of this chapter. Turf is prohibited. |
5. Modifications to Interior Parking Lot Landscaping: The zoning administrator may waive interior landscape area requirements if a solar energy system is integrated into the roof structure of a carport, or if the parking lot perimeter landscaping width is increased to 15' and with an equal number of trees, as required in the interior, and perimeter parking lot landscaping, are provided.
C. Parking Lot Perimeter Landscaping:
1. Applicability: Landscaping along the perimeter of the parking lot shall be provided when the parking lot is located:
a. Within a required yard (where permitted in Sections 21A.44.060 or 21A.36.020);
b. Within 20 feet of a lot line; or
c. Abutting a principal building.
2. Where both landscape buffers and perimeter parking lot landscaping are required, the more restrictive shall apply.
3. Where a surface parking lot is adjacent to another surface parking lot, on the same or separate parcels or lots, the perimeter parking lot landscaping provision may be waived by the zoning administrator if the required number trees are located elsewhere within the development.
4. Size:
a. In a required yard or within 20 feet of a property line: 8 feet in width, as measured from the back of the parking lot curb and extending into any parking space overhang area.
b. Abutting a building on the same property: A minimum 5-foot-wide required landscaping and 3-foot walkway shall be required to buffer buildings from parking spaces.
5. Planting Requirements:
Perimeter Parking Lot Landscaping: | |
Shade Tress | 1 tree per 300 square feet of perimeter parking lot area. Trees may be clustered or spaced throughout the landscaping areas. Perimeter landscaping abutting a building does not need to be included in the square footage calculation.1 |
Shrubs | 1 shrub per 3 feet, on center, along 100 percent of the yard length. Shrubs with mature height not more than 3 feet |
Ground cover/ Mulch | Required landscaping outside of shrub masses shall be established in ground cover or mulched consistent with the standards of this chapter. Turf is prohibited. |
Parking Lot Fences/Walls | Fences or walls along parking lot perimeters may be required to satisfy landscape buffer requirements outlined in Section 21A.48.060 of this chapter. |
1. Required perimeter trees species shall be chosen from the Urban Forestry Street Tree List and shall be approved by the Salt Lake City Urban Forestry Division. | |
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D . Curbing: Concrete curbing shall be installed at the perimeter of internal landscape areas and perimeter parking where parking lots vehicular access aisles or stalls directly abuts required landscaping. Biodetention areas are exempt from curbing requirements, however a vehicle stop is required when biodetention areas directly abut parking stalls.
E. Biodetention in Parking Lot Interior and Perimeter Landscaping Areas: Retention of the 80th percentile storm is required for all impervious surface parking lots with 50 or more parking spaces. Where this is not feasible, as defined in the SLCDPUs Standard Practices Manual, an approved Stormwater Best Management Practices (Stormwater BMPs) is required. All proposed Stormwater BMPs are subject to Public Utilities Division review, approval, and inspection.
F. Stormwater BMP Approval Required: A SLC Approved Stormwater Best Management Practice (Stormwater BMP) for all hard surfaced parking lots is required prior to discharge to the public storm drain and gutter, as required in Subsection 21A.44.060.A.2:
1. All Stormwater BMPs are subject to Public Utilities Division review, approval, and inspection.
2. Plantings within BMPs are to be drought tolerant, salt tolerant, winter hardy, and able to be submerged. (Ord. 12-24, 2024)
All required landscape plans shall be prepared based on the following standards. All landscape improvements in the required landscape locations, as described in Sections 21A.48.060 and 21A.48.070 shall meet the regulations described in this section.
A. Installation: All landscaping shall be installed in accordance with the current planting procedures established by the American Association of Nurserymen. The installation of all plants required by this chapter may be delayed until the next optimal planting season, as determined by the zoning administrator.
1. At the time of planting:
a. Deciduous Trees: All deciduous trees shall have a minimum trunk size of 1.5 inches in caliper.
b. Evergreen Trees: All evergreen trees shall have a minimum size of 5 feet in height.
c. Shrubs: All shrubs shall have a minimum height or spread of 10 inches depending on the plant's natural growth habit, unless otherwise specified. Plants in 2-gallon containers will generally comply with this standard.
B. General Landscaping Standards:
1. Drought Tolerant or Native Species: 100% of required shrubs, perennial plants, and groundcover used on a site shall be drought tolerant, adapted or native species. The city has compiled a list titled "Salt Lake City Plant List and Hydrozone Schedule", established and maintained by Public Utilities, shall be used to satisfy this requirement. Other plants that are not on the list but are considered drought tolerant, adapted or native and require similar watering needs may also be used.
2. Turf: Turf is not permitted:
a. In the park strip.
b. In parking lot perimeter and interior landscaping areas.
c. In areas that are less than 8 feet in any dimension at the narrowest point.
d. In areas with a slope greater than 25% (4 feet horizontal: 1 foot vertical).
e. In required landscape buffer areas.
3. Mulch: Mulch shall be:
a. At least 3 inches in depth.
b. Used in areas that are not covered with landscaping.
c. Permeable to air and water.
d. Permanent fiber barriers, plastic sheeting, or other impervious barriers are prohibited as an underlayment.
e. Crushed rubber is prohibited.
f. Rock used as a mulch material is limited to 20% of an area where landscaping is required by this chapter.
4. Artificial turf is prohibited in any location where landscaping is regulated by this chapter.
5. Berming is prohibited in parking lot and park strip landscaping unless required in specific district regulations.
C. Specific Park Strip Standards: In addition to General Landscape Standards these provisions shall apply to park strips.
1. Street Trees:
a. Substitutions. The Urban Forester may approve a substitute of the required street tree provision for a cash in lieu payment if the number of required trees cannot be met due to conflicts related to public utilities or right-of-way regulations. A cash in lieu payment, in the amount of cost to purchase and plant the required number of street trees, shall be contributed to the city's Tree Fund;
b. Tree Grates: If new street trees are proposed in a location where the area surrounding the tree will have an impervious surface, tree wells with grates shall be provided with adequate dimensions and sufficient soil volume to accommodate the proposed tree species, subject to review by the Urban Forestry Division.
c. Tree Root Protection: Rock or gravel shall maintain a 2-foot separation from the trunk of a street tree.
2. Vegetation with Thorned, Spined, or Other Sharp Rigid Parts: Vegetation with thorns, spines, or other sharp, rigid parts hazardous to pedestrians and bicyclists, and difficult to walk across are prohibited within 3 feet of a curb, sidewalk, walkway, or driveway.
3. Storm Drain Protection:
a. Rock or gravel shall be set at or below top back of curb or abutting sidewalk grade.
b. Rock or gravel shall have 1 inch or greater diameter. Grades abutting public streets exceeding 4%, as indicated by Public Utilities Division's "4% Grade Streets Map", shall have rock or gravel 3 inch or greater diameter.
4. Pathways: Impervious surface pathways provided between the curb and sidewalk, are permitted subject to the following:
a. Shall not be more than 5 feet in width and shall be located to provide the most direct route from curb to sidewalk.
b. A maximum of 1 pathway per 20 linear feet of park strip is permitted.
c. The pathway area shall be included in impervious surface percentage calculation.
5. Stormwater Curb Controls: Integration of LID (Low Impact Development) practices are encouraged in park strip areas. Stormwater curb cuts are permitted to allow stormwater to enter the landscaped area subject to the following provisions:
a. The design and construction of the stormwater curb cut shall comply with the SLCDPU Standards Practices Manual.
b. All stormwater curb controls are subject to Public Utilities Division review and approval.
6. Encroachments in the Right-of-Way: Structural encroachments are only permitted when specifically approved by city divisions and applicable decision-making bodies (or their designee) and may require an encroachment permit.
a. All encroachments are subject to the following standards, unless specifically allowed elsewhere in this title:
(1) Any raised structure shall be setback from the curb a minimum of 24 inches,
(2) There are no other practical locations for the structure on the private property, and
(3) The proposed structures will serve the general public and are part of general public need, or the proposed structures are necessary for the functional use of the property.
b. Bus Stops and Bike Share Stations: Concrete pads for bus stop benches and/or shelters and bike share stations may be permitted with zoning administrator approval. Impervious surface limitations may be modified upon review.
c. Outdoor Dining: Park strip materials and structural standards may be modified by the Zoning Administrator when outdoor dining is approved pursuant to Section 21A.40.065 of this title.
d. Bike Paths: Bike paths that are separated from the travel lanes with cars are permitted in any existing park strip. Any space between the bike path and the sidewalk and/or curb of the travel lanes are subject to the requirements of this section. (Ord. 12-24, 2024)
A. Purpose Statement: The purpose of these tree preservation provisions is to recognize and protect the valuable asset embodied in the trees that exist on private lands within the city and ensure that the existing trees of Salt Lake City continue to provide benefit to its citizens. Essential to effective tree preservation is the understanding of tree growth requirements having to do with space, water, and soil quality needs, among other qualities. Good, early planning, site design, and construction management practices are key to allowing trees to prosper. Preconstruction planning and mitigation of potential impacts that development may have on trees is necessary and one of the purposes of this section. Numerous community and personal benefits arise from the presence of trees in urbanized areas - both on residential and nonresidential lands - and it is the intent of this section through the preservation of the trees to:
1. Enhance the quality of life in the city and protect public health and safety;
2. Preserve and enhance the visual and aesthetic qualities of the city;
3. Enhance public and private property for greater enjoyment and usability due to the shade, cooling, and the aesthetic beauty afforded by trees;
4. Protect and improve the real estate values of the city;
5. Preserve and enhance air and water quality;
6. Reduce noise, glare, dust, and heat, and moderate climate, including urban heat island effect;
7. Increase slope stability, and control erosion and sediment runoff into streams and waterways;
8. Protect the natural habitat and ecosystems of the city;
9. Conserve energy by reducing heating and cooling costs; and
10. Preserve the function of mature trees to absorb greenhouse gases such as carbon dioxide.
B. Applicability:
1. General: The standards in this section shall apply to new development in the city unless exempted in accordance with Subsection C, "Exemptions", of this section. The standards in this section shall apply at the time of a development application for "development" as defined in the zoning ordinance.
2. Other Regulations: Title 2, Chapter 2.26 of this code, the Salt Lake City urban forestry ordinance, addressing the protection of trees located on public property owned by the city and in rights of way, shall remain in effect.
3. Specimen Trees: The city forester shall maintain a list of trees or tree types that are deemed to be specimen trees subject to Subsection E, "Standards", of this section.
C. Exemptions: The following specimen tree removal activities may be exempt from the standards of this section upon confirmation and approval by the city forester:
1. The removal of dead, damaged, or naturally fallen trees, or in cases of community emergency;
2. When in conjunction with the construction of a single- or two-family residence not part of a proposed new subdivision;
3. The removal of trees on an existing legal lot when not associated with new development;
4. The removal of trees in such a condition that they pose a threat to structures or natural features on the site, on adjoining properties, or in the public right of way;
5. The removal of diseased trees posing a threat to adjacent trees;
6. The selective and limited removal of trees necessary to obtain clear visibility at driveways or intersections;
7. The removal of trees associated with development at the Salt Lake City International Airport only as necessary to provide safe operations;
8. The removal of trees when requested by the city forester for the purposes of conflict with utilities or streets; and
9. The removal of trees deemed appropriate by the city forester, based on tree species, site conditions, or other variables.
D. Standards:
1. Preservation of Specimen Trees: Specimen trees shall be preserved to the maximum extent practicable as determined by the city forester, in consultation with the zoning administrator, unless exempted pursuant to Subsection C, "Exemptions", of this section.
a. In determining if preservation is impracticable, the city shall consider the following criteria, including, but not limited to:
(1) Whether an alternative location or configuration of the development including elements such as parking or structures on the site would be feasible to accomplish tree preservation, without negatively impacting adjacent properties,
(2) Whether preservation of the specimen tree would render all permitted development on the property infeasible, or
(3) If development of the property will provide significant community benefits that outweigh tree preservation.
b. The zoning administrator may modify any dimensional standard, such as setbacks and height limits, by up to 20% if such modification will result in preservation of a specimen tree.
2. Cutting, Removal, or Damage Prohibited: Specimen trees, required to be preserved, shall not be cut, removed, pushed over, killed, or otherwise damaged.
3. Paving, Fill, Excavation, or Soil Compaction Prohibited: The tree protection zone of any protected specimen tree shall not be subjected to paving, filling, excavation, or soil compaction.
4. Mitigation: Where the city determines it is not practicable to preserve a specimen tree on the development site, the following mitigation provisions shall apply.
a. Replacement Tree Required: 2 caliper inches of replacement trees shall be provided for each dbh of specimen tree removed (for example, if a 24 inch dbh specimen tree is removed, it must be replaced with at least 24 trees of a minimum 2 inch caliper or 8 trees with a 6 inch caliper). Each replacement tree shall be a minimum of 2 inches in caliper, and shall either be replanted prior to certificate of occupancy or within a conditional time frame as approved by the city forester. Consult the "Salt Lake City Plant List and Hydrozone Schedule" for recommendations on tree selection.
Replacement trees shall be planted on the lot or site where the specimen tree was removed except where the city forester, in consultation with the zoning administrator, finds the following:
(1) The site does not provide for adequate landscape surface area to accommodate the total number of replacement trees; or
(2) That due to unique soil types, topography, or unusual characteristics of the site, the likelihood of successful tree growth is diminished.
In such cases, the applicant shall mitigate for the loss of the specimen tree in the form of payment to the city's tree fund as provided below.
b. Cash in Lieu Payment/Tree Fund Contribution: Applicants who are permitted to remove a specimen tree but not plant a replacement tree on site shall make a cash in lieu payment, in the amount of the cost to purchase and plant the required number of replacement trees, into the city's tree fund.
E. Specimen Tree Protection During Construction:
1. Owner's Responsibility: During construction, the owner of the property shall be responsible for the ongoing health of specimen trees located on the site. This includes basic tree maintenance and watering throughout the term of construction. The owner shall also ensure the erection of barriers necessary to protect any specimen tree from damage during and after construction.
2. Tree Protection Zone Fencing: Tree protection fencing shall be erected to protect all preserved trees from excavation, fill, compaction, or other impacts that would threaten tree health. Specimen trees shall be fenced in accordance with this subsection before any grading, excavating, or other land disturbing activity begins on a construction site. No construction, grading, equipment or material storage, or any other activity shall be allowed within the tree protection zone, as delineated by the required tree protection fencing, except in accordance with the standards in Subsection F.3, "Encroachments Into Tree Protection Zones and Root Zones", of this section. Fencing shall be maintained until the land disturbance activities are complete, and shall not be removed or altered without first obtaining written consent from the city forester.
The tree protection fencing shall be clearly shown on the required development applications such as a site plan, building permit, or grading permit application.
a. Location: Fencing shall extend at least 1 foot in distance from the edge of the drip line of a specimen tree or group of specimen trees or as directed by the city forester to best protect a specimen tree's critical root zone and still allow construction access.
b. Type of Fencing: The developer shall erect a chainlink fence, a minimum of 4 feet in height, secured to metal posts driven into the ground. Such fencing shall be secured to withstand construction activity and weather on the site and shall be maintained in a functional condition for the duration of work on the property. This is not considered permanent fencing subject to Section 21A.40.120, "Regulation of Fences, Walls and Hedges", of this title.
c. Timing: All required tree protection measures shall be installed, inspected and approved by the city forester prior to the commencement of any land disturbing activities.
4. Encroachments Into Tree Protection Zones and Root Zones: Encroachments into a tree protection zone or within the critical root zones of trees protected in accordance with this subsection shall occur only in rare instances, and only upon obtaining written authorization from the city forester. If such encroachment is anticipated, tree preservation measures including, but not limited to, the following may be required:
a. Tree Crown and/or Root Pruning: The pruning, or cutting, of specimen tree branches or roots shall only be done under the supervision of an ISA certified arborist, and only upon approval of the city forester.
b. Soil Compaction Impact Mitigation: Where compaction might occur due to planned, temporary traffic through or materials placed within the protection zone, the area shall first be mulched with a minimum 4 inch layer of woodchips or a 6 inch layer of pine straw. Plywood sheet or metal plate coverage of the impacted area may be accepted by the city forester when high moisture conditions warrant. Equipment or materials storage shall not be allowed within the tree protection zone.
c. Grade Change Impact Mitigation: In the event proposed site development requires soil elevation changes tree protection measures designed to mitigate harm to the tree(s) shall be coordinated with the city forester and the zoning administrator.
d. Construction Debris/Effluent Strictly Prohibited: In no instance shall any debris or effluent, associated with the construction process, including equipment or vehicle washing, concrete mixing, pouring, or rinsing processes, be permitted to drain onto lands within tree protection zones, as delineated by the chainlink tree protection fencing.
F. Enforcement: These tree preservation provisions shall be subject to the zoning and development enforcement codes as adopted by the city. (Ord. 12-24, 2024)
Any person adversely affected by a final decision of the zoning administrator on a landscaping or buffer requirement may appeal to the appeals hearing officer in accordance with the provisions of Chapter 21A.16 of this title. (Ord. 12-24, 2024)