A. Buffer yards with plant screening complying with the following standards shall be required under the following situations, unless a more restrictive requirement is established by another requirement of this chapter:
(1) A minimum of 40-foot-wide buffer yard with plant screening shall be required along the rear and side lines of any lot used principally for nonresidential purposes that is contiguous to a lot occupied by an existing principal dwelling or an undeveloped residentially zoned lot. The plant screening shall primarily use evergreen plants. If existing healthy trees with a trunk diameter of six inches or greater (measured 4.5 feet above the ground level) exist within the buffer yard, they shall be preserved to the maximum extent feasible. The Zoning Officer may certify that preserving existing mature trees and shrubs within the buffer yard will meet the same purposes as new plant screening. In such case, part or all of the new plant screening may be waived, in writing by the Zoning Officer. The requirements of this section are modified in the following circumstances:
(a) If a principal business use will include areas used for manufacturing or will have a loading dock that will be serviced by tractor-trailer trucks or refrigerated trucks, then the minimum buffer yard between such manufacturing area and/or loading dock and a lot line of an existing principal dwelling shall be increased to 60 feet.
(b) A buffer yard shall not be required between a dwelling and a principal business use on the same lot.
(2) A required yard may overlap a required buffer yard, provided the requirement for each is met. The buffer yard shall be measured from the district boundary line, street right-of-way line or lot line, whichever is applicable. Required plantings shall not be placed within the right-of-way, except for deciduous canopy trees that may be approved by the Township.
(3) The buffer yard shall be a landscaped area free of structures, dumpsters, commercial or industrial storage or display, signs, manufacturing or processing activity, materials storage, loading and unloading areas, or vehicle parking or display.
(4) Fence. Any fence in a buffer yard shall be placed on the inside (nonresidential side) of any required plant screening.
(5) A well or septic system may be placed within a buffer yard, provided the landscaping and tree preservation provisions are still met.
(6) Each planting screen shall meet the following requirements:
(a) Plant materials needed to form the visual screen shall have a minimum height, when planted, of four feet. In addition, an average of one deciduous shade tree, with a minimum trunk diameter of two inches measured six inches above the ground level, shall be placed for each 40 feet of length of the buffer yard. The shade trees may be clustered or spaced unevenly.
(b) Plants needed to form the visual screen shall be of such species, spacing and size as can reasonably be expected to produce within three years a mostly solid year-round visual screen at least six feet in height. The use of native species is encouraged.
(c) The plant screen shall be placed so that at maturity the plants will not obstruct a street or sidewalk.
(d) The plant visual screen shall extend the full length of the lot line, except for Township-approved points of approximately perpendicular vehicle or pedestrian ingress and egress to the lot; locations necessary to comply with safe sight distance requirements where the plantings cannot feasibly be moved further back; and locations needed to meet other specific state, Township and utility requirements, such as stormwater swales.
(e) Evergreen trees should be planted at diagonal offsets so that there is room for future growth of the trees.
(7) Buffer yard plans.
(a) Prior to the issuance of a permit under this chapter where a buffer yard would be required, and on any required subdivision or land development plan, the applicant shall submit plans showing:
[1] The location and arrangement of each buffer yard;
[2] The placement, general selection of species and initial size of all plant materials; and
[3] The placement, size, materials and type of all fences to be placed in such buffer yard.
(b) If more than 20 evergreen plants are proposed, no more than 50% shall be of one species.
B. Any part of a commercial, industrial, institutional or apartment lot which is not used for structures, loading areas, parking spaces and aisles, sidewalks, designated storage areas and other approved uses, and which is not maintained in existing natural trees and natural vegetation, shall be maintained with a vegetative ground cover and shall be kept free of debris.
C. Street trees. See the provisions in the Subdivision and Land Development Chapter. A tree required under the Zoning Chapter may also be used to meet a requirement under the Subdivision and Land Development Chapter if the tree would meet the requirements for both ordinances.
D. Parking lot landscaping. See the provisions in the Subdivision and Land Development Chapter.
E. Review and approval. Where landscaping is required by this chapter, the applicant shall submit the landscaping information on a site plan or an accompanying plan that shows proposed initial sizes, locations and species of plantings.