Ordinance 1999-18 STATE OF ILLINOIS ) Revised 10/13/99
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COUNTY OF KENDALL )
ORDINANCE NO 99--t
UNITED CITY OF YORKVILLE LANDSCAPE ORDINANCE
SECTION 1: APPLICABILITY: For all development activity requiring a building permit
in all zoning districts, landscaping shall be provided, as follows:
1. For single family detached and duplex residential development:
a. New Construction: Parkway landscaping, and landscaping adjacent to primary and
secondary arterials and collector.
b. Existing Construction: Parkway landscaping, as required by the City Council for any
conditional use,rezoning,variance or change to a PUD.
2. For all other development, other than single family detached and duplex residential
development;parkway landscaping,perimeter landscaping,parking lot landscaping, lot
landscaping and landscaping adjacent to primary and secondary arterials shall be required
as provided in this Ordinance.
SECTION 2: LANDSCAPE REQUIREMENTS:
The following requirements in this section are cumulative:
1. Parkway Landscaping:
a. For all single family detached and duplex residential development, the minimum
required number of parkway trees are as follows:
Interior lots- one tree per lot.
Corner lots-two trees per lot(one tree per side).
All other lots- (such as parks and retention/detention areas) one tree per 50 lineal feet
of frontage.
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b. For all development other than single family detached and duplex residential
development, the minimum required number of parkway trees is one tree per 50 lineal
feet of frontage.
c. All parkways shall have minimum of 6 inches of good, clean, clump-free topsoil
neatly leveled to uniform grade from the top of curb to the top of sidewalk after
settling. Trees planted in the parkway will not be allowed. Trees shall be planted
within the in the public parkway between the curb and sidewalk.
d. All parkways shall have a good, thick stand of grass utilizing sod or seed per the IDOT
specifications including fertilizing. The developer as covered by the required
maintenance letter of credit will repair any settling of grass loss during the one-year
maintenance period. The minimum gradient of all parkways toward the curb shall be
2% and the maximum shall be 8%. All areas shall be seeded or sodded and fertilized
in an approved manner. Grass watering and mowing to a maximum height of 5 inches
will be the responsibility of the developer through the one year required maintenance
period after City acceptance. Parkways will be a minimum of 10 feet in width from the
back of the curb to the front edge of the sidewalk.
e. No tree shall be planted closer than 30' of the right-of-way intersection.
f. Trees shall have a minimum spacing of 20 feet from light poles, street signs, fire
hydrants and any other such items that may, in the opinion of the Public Works
Director,require similar intervals.
g. Trees under wires are not to exceed 20 feet in height at maturity.
h. Parkway trees shall be planted prior to the issuance of a certificate of occupancy. It
shall be the responsibility of the developer or builder to properly water all newly
planted parkway trees at the time of planting, and subsequently thereafter,to insure
their survival for a period of one year after City Council acceptance of the public
improvements.
i. Only approved shade trees may be used as parkway trees.
2. Perimeter Landscaping: Perimeter landscaping shall be required for all developments,
other than single family detached and duplex residential development, in accordance
with the following:
a. Non-residential adjacent to residential: Where a non-residential property is adjacent to
residential property a 30'wide buffer yard shall be provided. The bufferyard shall
consist of a berm or architectural masonry wall, at least 3' in height as measured from
the property line. The bufferyard shall also consist of 2 shade trees, 5 evergreen trees and
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three ornamental trees per 100 lineal feet of bufferyard.
b. Non-residential adjacent to a public right of way: Where a non-residential property is
adjacent to a public right-of-way, a 30' landscape bufferyard shall be provided. The
bufferyard shall consist of one shade tree, one evergreen tree and 33 shrubs per 100
lineal feet of bufferyard.
c. Multi-family residential adjacent to single family detached and duplex residential:
Where multi-family residential property is adjacent to single family detached or
duplex residential a 30' landscape bufferyard shall be provided. The bufferyard shall
consist of three shade trees, three evergreen and two ornamental trees per 100 lineal
feet of bufferyard.
3. Parking Lot Landscaping: All parking lots with ten(10) or more parking spaces,
shall provide landscaping in accordance with the following:
a. Interior Parking Lot Landscaping:
1. Interior Landscaping: One tree shall be provided for every 20 parking space and
shall he planted within the interior of the parking lot. Trees shall be located in
landscape medians, which have a minimum area of 190 square feet and a minimum
dimension of 10 feet. The landscape median shall be covered with shrubs,round
cover, turf or organic mulch.
2. Visibility: To ensure proper visibility within the parking lot,the branches of trees
shall start no less than six feet(6') above the pavement and shrubs shall he
maintained at a height of no greater than 30" above the pavement.
b. Perimeter Parking Lot Landscaping: When a parking lot, which is located on a
non-residential property, is adjacent to another non-residential property, a 5'perimeter
bufferyard shall be provided along the parking lot. The buffer yard shall consist of
two shade trees and 15 shrubs per 100 lineal feet of buffer yard.
4. Lot Landscaping: Lot landscaping shall be required for all developments other than
single family detached residential and duplex developments in accordance with the
following:
a. Multi-family: Two canopy trees and 15 shrubs shall he provided for every four units.
b. Non-residential: Two shade trees and 15 shrubs shall be provided for every 20,000 sf,
of lot area.
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5. Landscaping Adjacent to Primary and Secondary Arterials and Collector:
Residential lots which back up to an Arterial or Collector as defined in the Yorkville
Comprehensive Plan, shall provide a minimum 30'wide landscape easement running
the full length of the residential lots. This easement shall he planted with 3 shade trees,
4 evergreens and 20 shrubs per 100 feet.
6. Storm Water Storage Basins: A 30'bufferyard shall he provided around storm water
storage basins which are within the front or side yard. The bufferyard shall be located
above the average elevation between normal water level and the high water line for
retention basins and shall be located above the average elevation between the lowest
basin elevation and the high water line for detention basins.
SECTION 3• GENERAL STANDARDS
1. Landscape Plan: A landscape plan shall be submitted for review and approval. The
landscape plan shall contain the following information:
a. The location and dimensions of all existing and proposed structures,parking lots,
sidewalks, ground signs,refuse disposal areas, free standing electrical equipment, and
other freestanding structural features.
b. Name, location,right-of-way and pavement widths of abutting streets.
c. The current zoning and land use for adjoining properties and properties located across
abutting streets.
d. The location, quantity, size, and type(both botanical and common names) of all
existing landscaping to be preserved and all proposed landscaping to he added.
e. The location and contours, atone-foot(1') intervals, of all proposed berming and
storm water detention/retention ponds.
f. Specification of the type and boundaries of all proposed ground cover.
g. Elevation and location of all existing and proposed fences.
h. Location of all existing and proposed utilities and easements.
i. Property line dimensions.
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2. Quality: All trees shall be planted according to the minimum standards established by
the American Association of Nurserymen. Plant material shall be grown in nurseries
from the Central or Northern Illinois region.
3. Size: The size of plant material required by this ordinance shall be as follows:
Shade Tree-3" cal. measured 6" above grade
Evergreen Tree - 8'height
Ornamental Tree- 6'height
Shrubs - 24"
4. Substitutions: For the purposes of providing flexibility in the landscape design
substitutions may be allowed at the following rates:
1 Tree equals 2 Evergreen Trees
1 Tree equals 2 Ornamental Trees
1 Tree equals 20 Shrubs
Inspection of the applicant's property will be conducted by the Development Department
after the installation of all materials by the applicant and again after at least one (1) full
growing season has passed.
5. Alternative Methods of Compliance: Site conditions may arise where normal
compliance is impractical or impossible or where maximum achievement of the City's
objectives can only he obtained through alternative methods.
a. Requests for alternative methods of compliance may be considered by the City for
any application to which the requirements of the Ordinance apply when one(1) or
more of the following conditions are present:
1. Topography, soil,vegetation or other site conditions are such that full compliance is
impossible or impractical, or improved environmental quality would result from the
alternative compliance.
2. Space limitations or the existing character surrounding neighborhood may justify
alternative compliance for infill sites and for improvements or redevelopment in
older developed areas.
3. A change of use on an existing site increases the screening required to more than is
feasible to provide.
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4. Safety considerations make alternative methods of compliance necessary.
b. Requests for alternative methods of compliance shall be accompanied by
sufficient explanation and justification,written and graphic, to allow
appropriate evaluation and decisions by the City Planner.
c. A proposed alternative compliance measure must be equal to or better than normal
compliance in terms of quality. effectiveness, durability,hardiness and ability to meet
the landscape standards of the Ordinance.
d. Alternative compliance shall be limited to the specific project under consideration and
shall not establish precedents for acceptance in other eases.
6. Credit for Existing Vegetation: Credit shall be given for existing trees that are
preserved. Each tree that is preserved which is greater than 3" caliper and is a permitted
tree per section, shall be credited towards the required tree planting on a tree for tree
basis. Other existing vegetation may be credited towards the required plantings subject
to the review and approval of the City Planner.
7. Permitted Plantings: The plantings used to meet the requirements of this ordinance
shall be selected from the follow list of approved plant material.
Shade Trees:
Ash, Green Fraxinus pennsylvanica spp.
Ash, White Fraxmnus americana spp.
Coffeetree,Kentucky Gymnocladus dhioica
Ginkgo Ginko biloba
Hackberry Celtis occidentialis
Linden American Tilia americana spp.
Linden,Littecleaf Tilia cordata spp.
Linden, Silver Tilia tomentosa
Maple,Black Acer nigrum
Maple,Norway Acer platanoides spp.
Maple,Red Acer rubrum spp.
Maple, Sugar Acer saccharum spp.
Oak,Burr Quercus macrocarpa
Oak,Red Quercus rubra
Oak, Swamp White Quercus bicolor
Oak, White Quercus alba
Pear, Bradford Pyrus cahleiyana
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Sycamore Platanus occidentahis
Tuliptree Liriodendron tuhipifera
Evergreen Trees
Fir,Douglas Pseudotsuga menziesii
Fir, White Abies coneolor
Pine, Austrian Pinus nigra
Pine, Scotch Pinus sylvestris
Pine, White Pinus strobus
Spruce, Blackhills Picea glauca"densata"
Spruce, Colorado Picea pungens
Spruce,Norway Picea abies
Spruce, White Picea glauca
Ornamental Trees
Alder Alnus glutinosa
Birch, River Malus spp.
Hawthorne, Downy Craetoegus mollis
Hawthorne, Washington Craetoegus phaenopynu,
Hawthorne, Thorn less Cockspur Crataegus crusgalli "inermis"
Hombean, American Carpinus caroliniana
Lilac, Japanese Tree Syringa reticulata
Magnolia, Saucer Magnolia souulangiana
Magnolia, Star Magnolia stellata
Redbud Cercis canadensis
Serviceberry, apple Amelanchier grandiflora
Servicebenry, Shadblow Amelanchier canadensis
Shrubs
Those species and varieties hardy to USDA Zone 5.
Other plant material not listed may be allowed on a case by case basis as determined by the
City Planner.
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BURTON CALLMER DAVE DOCKSTADER
RICHARD STICKA K MIKE ANDERSON
VALERIE BURD E ROSE SPEARS
LARRY KOT A— THOMAS SOWINSKI
APPROVED by me, as Mayor of the United City of Yorkville, Kendall County, Illinois,
this I ay of , A.D. 19�
MAYOR
PASSED by the City Council of the United City of Yorkville,Kendall County, Illinois
AL this 4Aay of w , A.D. 19'
Attest: QQ �
CITY CLERK
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