For purposes of this article, certain words or terms applicable hereto are hereinafter defined. Words and terms used in this article, but not defined in this article, shall have the meanings ascribed to them in the Lancaster Development Code or other ordinances of the City. Words and terms defined in two ordinances shall be read in harmony unless there exists an irreconcilable conflict in which case the definition contained in this article shall control. For purposes of this article, the Director of Development Services or designee shall have interpretive authority to use commonly accepted definitions and/or to utilize generally accepted professional standards when any such conflict cannot otherwise be resolved.
Administrative Official.Provisions of this article shall be administered by the Director of Development Services, who shall be appointed by the City Manager.
Agricultural Use.The use of land to produce plant or animal products, such as the growing of crops, raising and pasturing of livestock, timber production, Christmas tree[s], or farming.
ANSI.American National Standards Institute; standards used by the horticulture and landscape professionals to measure and evaluate trees.
Bark Protection.Where a Protected Tree remains in the immediate area of intended construction, the tree shall be protected by enclosing the entire circumference of the tree with approved padding material and 2" x 4" lumber encircled with wire or any other method approved by the Director of Development Services or designee. The intent is to protect the bark of the tree against incidental contact or damage by large construction equipment.
Boring.Boring of utilities shall be required in those circumstances where it is not possible to trench around the critical root zone of the Protected Tree. When required, the length of the bore shall be the width of the critical root zone at a minimum depth approved on-site by Director of Development Services or designee.
Buffer Zone.Buffer zone is a method of screening or separating adjacent land use areas, which are improved with predominate nonresidential use and whose side or rear lines are adjacent to a residential district or use and not separated by a public street or roadway. These buffers, when required, should be densely maintained with trees and shrubs and be a minimum of twenty-five (25') feet in depth.
Buildable Area.That portion of a building site, exclusive of the required yard areas, on which a structure or building improvements may be erected and including the actual structure, driveway, parking lot, pool and other construction as shown on a site plan.
Building Envelope (BE).The area surrounding and adjacent to the building pad that may be cleared to allow for all necessary construction equipment and construction. Residential BE shall not exceed ten (10') feet from the Building Pad. Commercial BE shall be determined by the Director of Development Services for the necessary tree protection. All existing natural vegetation beyond the building envelope shall be protected by protective fencing.
Caliper.The diameter of a tree measured is as follows: Height to measure depends on size: zero to four inches (0-4"), measured at six inches (6") from natural ground level. Trees four inches (4") to transplantable size are measured at twelve inches (12") from natural ground level. All others at four and one-half feet (4.5') from the ground level in Diameter at Breast Height (see ANSI standard).
Class 1 Treemeans all specimen trees; except Eastern Red Cedar and Osage Orange, and all trees located in a primary natural area, floodplain, or geologically similar area measured to fifty feet above the escarpment zone.
Class 3 Treemeans Arizona ash, black willow, cottonwood, Eastern Red Cedar 24 inches (24") in diameter or more, crabapple, honey locust, mimosa, mulberry, sweet gum, ornamentals, Osage Orange and Hackberry/Sugarberry 24 inches (24") in diameter or more, pinus spp., Siberian elm, and Silver maple larger than eight inches (8") in diameter.
Clear-Cutting.The removal of all of the trees or a significant majority of the trees within an area of land.
Conservation Design.A development design or pattern intended or having the effect of creating, retaining or preserving environmentally sensitive areas, natural habitats, wooded areas or areas of natural beauty in greater amount than would be otherwise be provided using Conventional Design or Traditional Neighborhood Design. Techniques used to achieve this result principally include the grouping together and/or concentration of buildings into clusters, reduction in lot size, reduction in paved areas and/or streets, and the use of shared common areas.
Conventional Design.A development design or pattern characterized by homes and nonresidential buildings located on large individual lots, physical separation of buildings, segregation of land uses, and a predominance of individual yards within privately owned lots rather than the use of commonly owned open areas. This pattern frequently features long block lengths, wide streets, cul-de-sacs, alleys and an emphasis on transportation service via the privately owned automobile.
Critical Root Zone (CRZ).The area of undisturbed natural soil around a tree defined by a circle with a radius equal to the distance from the trunk to the outermost portion of the drip line. If the CRZ is compromised by site conditions, such as but not limited to, roads, sidewalks, existing buildings, utility. easements, etc., the CRZ will be determined by the Director of Development Services or designee.
Critically Alter, Critical Alteration.Uprooting or severing the main trunk of a tree, or any act which causes or may reasonably be expected to cause a tree to die. This includes, but is not limited to: damage inflicted upon the root system of a tree; a change in the natural grade above the root system of a tree, storage of materials, or the compaction of soil above the root system of a tree; an application of herbicidal chemical or the misapplication of beneficial chemicals; excessive pruning; placement of non-permeable pavement over the root system or [of] a tree; or trenching within the primary root zone. Additionally, a tree may be considered critically altered if more than twenty-five percent (25%) of the primary root zone is altered or disturbed at natural grade, or more than twenty-five percent (25%) of the canopy is removed.
Cut/Fill.Areas where the natural ground level has been excavated (cut) or raised (fill).
Drip Line.A circular line, which follows the outermost portion of the canopy of a tree and extending to the ground.
Early succession stage.The biotic community that develops immediately following the removal or mortality of most or all of forest canopy, resulting in a predominance of woody species regeneration primarily comprised by "pioneer" plant species.
FEMA 100-Year Floodplain.The area designated as being within the one-hundred-year floodplain on the Federal Emergency Management Agency Flood Insurance Rate Map (FIRM) as of the effective date of this article. The boundary may be verified and established through field surveys based on elevation. Any changes made by FEMA to the 100-year floodplain boundary after the effective date of this article due to filling of the floodplain, channelization, or other drainage improvements shall not reduce the area in which tree preservation, replacement or protection requirements apply.
Grade Change.Any changes in ground level or soil compaction within the area just beyond the spread of the branches that will damage the roots.
Ground Level Cuts.Where Protected Tree removal is allowed through exemption or by tree removal permit, and the root system is intertwined with Protected Trees which are intended to be saved, the tree shall be removed by flush cutting with the natural level of the surrounding ground. If stump removal is desired stump grinding shall be allowed upon approval of the Director of Development Services.
Grubbing.Excavating or removing a significant part of the root system.
Limits of Construction.Delineation on the site plan defining the areas within which all construction activity may occur.
Municipal/Public Domain Property.Property in which title is held in the name of a governmental entity. Examples of this would include City Hall, public parks, Corps of Engineers' property, State of Texas R.O.W., library, fire stations, water tower sites, public schools or similar properties.
Old field.Land no longer under cultivation because the fertility of the soil has been exhausted.
Open Space.A public or semi-public space, including common areas or parks, that:
(a) Is open and unobstructed from its lowest level to the sky. (Vegetation and complementary amenity structures such as open pavilions[,] shade structures, picnic tables, playground equipment, bicycle racks[,] drinking fountains, trash receptacles, goal posts, lighting etc. shall not be considered obstructions.)
(b) Is accessible to, designed for, and intended for the common use or enjoyment of the general public or the residents/occupants of a building, neighborhood or subdivision.
(c) Is used for recreation, resource protection, amenity or buffer yard/greenbelt purposes.
(d) Is not an existing or future right-of-way.
(e) Is not part of the roof of any building.
Protective Fencing.Protective fencing shall be orange vinyl construction fencing or other material approved by Director of Development Services or designee with a four-foot (4') approximate height adequately supported.
Pruning, Allowed.Approved pruning of Protected Tree(s) by Director of Development Services in cases where tree(s) must be strategically pruned to allow construction or demolition of a structure. When allowed, all pruning shall be in accordance with approved arboricultural technique and/or guidelines established by the Director of Development Services or designee.
Pruning Permit.Permit required for all utility, franchise and City projects. No fee is required.
Residential Homestead.Owners of property zoned as residential, who reside at the property as their primary residence. This term does not include properties zoned "MF" Multi-Family Residential district.
Thinning, Selective.The removal of selected trees from within a forested area. The purpose of Selective Thinning is to improve the health and natural growth form of remaining trees or remove invasive and sometimes non-native species.
Topsoil.Top layer of soil native to the site.
Traditional Neighborhood Design.A development design or pattern that is characterized by a mixture of housing types and densities, a mixture of land uses including retail, office, and civic uses, reduced paving and street sizes, and that affords ease of pedestrian access. This design typically features a gridiron street pattern, short block lengths, narrow streets, reduced building setbacks from the street and close proximity of residential and nonresidential buildings and uses.
Tree.Any self-supporting woody perennial plant, which will attain a trunk diameter of two inches (2") or more when measured at a point four and one-half feet (4.5') above ground level and normally an overall height of at least fifteen feet (15') at maturity, singular or multi-trunk. The diameter of a multi-trunk tree shall be determined by adding the total diameter of 1/2 diameter of each additional trunk to the diameter of the largest trunk.
(a) Tree, Canopy or Shade.Canopy or Shade Tree means a species of tree which normally bears crown foliage no lower than six feet (6') above ground level upon maturity.
(b) Tree, Heritage.Any tree planted and related to the heritage of the community, individual or homestead, or dedicated or planted as a public memorial, as designated by City Council[.]
(c) Tree, Historic.Any tree that has been identified as having historical value or is associated with a notable local or regional historic event, person, structure or landscape, as designated by City Council.
(d) Tree, Park.Trees located in public parks and all areas owned by the City to which the public has free access to as a park.
(e) Tree, Preserved.A Protected Tree shall be considered preserved only if a minimum of seventy-five percent (75%) of the critical root zone is maintained at undisturbed natural grade and not more than twenty-five percent (25%) of the canopy is removed due to building encroachment. The canopy shall retain its natural form and integrity.
(f) Tree, Protected.A tree of any species that has a minimum diameter of six inches (6") that is not classified as unprotected in this article. The caliper of a multi-trunk tree shall be determined by adding the total diameter of the largest trunk to one-half (1/2) diameter of each additional trunk (refer to ANSI).
(g) Tree, Specimen.Means a healthy tree whose age, size, unique type, or natural character are of special importance to the City, and meets the following species and size requirements:
(1) Post oaks with a minimum diameter of 12 inches (12"); and
(2) Trees of all species having a minimum diameter of 24 inches (24").
(h) Tree, Street.Trees, shrubs, and all other woody vegetation on land lying between property lines planted at recommended intervals with consideration of visibility triangle on either side of all streets, avenues, right-of-ways or entrances to the City. Tree species and planting techniques shall be selected to create a unified image for the street, provide an effective canopy, avoid sidewalk damage and minimize water consumption.
(i) Tree, Understory.A tree which the City has determined has significant positive characteristics worthy of preservation and that does not typically attain height greater than thirty feet (30').
Tree Board.The City's Planning and Zoning Commission shall sit as the Tree and Landscape Advisory Board, and all references herein to the "Tree Board" shall refer to the City's Planning and Zoning Commission sitting in that capacity. The Board will meet as needed to review and monitor the Tree Protection and Landscape Ordinances, and to advise the Director of Development Services, Park Board, City Council, and citizens.
Tree Diversity.A condition wherein no single species of tree or plant material comprises more than 30% of the cumulative total of plantings on a site or of replacement trees required due to mitigation and remediation.
Tree Health.The condition of the tree, including structural integrity, pest and/or pathogen related problems.
Tree Survey.The Tree Survey is the heart of this article. Its purpose is not to penalize, but to aid in protecting our valuable natural resources during development and construction. The Tree Survey will also help determine the quantity of trees, if any, that may be removed or cannot be safely and adequately protected during the street utility, engineering/drainage, and construction phases of development.
Tree Topping.The severe cutting back of limbs to stubs larger than three inches in diameter within the tree's crown to such a degree so as to remove the normal canopy and disfigure the tree. Trees severely damaged by storms or other causes, or certain trees under utility wires or other obstructions where other pruning practices are impractical, may be exempted from this article at the determination of the Director of Development Services or designee.
Unprotected Treemeans the following:
(a) Callery pear (all cultivars)
(c) Mesquite (with a diameter of less than 24 inches)
(d) Eastern Red Cedar (with a diameter of less than 24 inches)
(f) Hackberry & Sugarberry Species (with a diameter of less than 24 inches)
(g) Ilex Species (except for yaupon holly and Possumhaw holly)
(h) Palm (all plants in Palmae)
(i) Tree-of-heaven or Ailanthus
(j) Other trees listed on the Texas A&M invasive plant list
(Ordinance 2017-06-21, sec. 3 (14.902) adopted 6/26/17)