Table 7.15.1: Required Buffer Zones
| |||||
---|---|---|---|---|---|
Proposed Use
|
Adjacent to Single-Family District or Use
|
Adjacent to Multiple-Family District or Use
|
Adjacent to Manufactured Home Park District or Use
|
Adjacent to Business District or Use
|
Adjacent to Industrial District or Use
|
Single-family residential
|
None
|
B
|
B
|
B
|
A
|
Multiple-family residential
|
B
|
None
|
B
|
B
|
A
|
Manufactured home park
|
B
|
B
|
None
|
B
|
A
|
Business
|
B
|
B
|
B
|
C1
|
B2
|
Industrial
|
A
|
A
|
A
|
B2
|
C
|
Institutional
|
B2
|
B2
|
B2
|
C
|
C
|
Buffer Zone Type
|
Minimum Width4
(feet)
|
Wall/ Berm3
|
Minimum Plant Materials
|
---|---|---|---|
A
|
50
|
6-foot wall, 6-foot fence or 4-foot berm
|
1 canopy tree, 2 evergreen trees and 4 shrubs per 20 linear
feet along the lot line, rounded upward
|
B
|
20
|
6-foot wall, 6-foot fence or 4-foot berm
|
1 canopy tree, 1 evergreen tree and 4 shrubs per 30 linear feet
along the lot line, rounded upward
|
C
|
10
|
None
|
1 canopy or evergreen tree or 4 shrubs per 20 linear feet along
the lot line, rounded upward
|
NOTES:
| |
1
|
Buffer zone landscaping shall not be required between business
uses where shared access, shared parking or service drive connections
are provided or where there is a zero-lot-line setback between uses.
|
2
|
Buffer zone "A" shall be required where the use has outdoor
storage or truck loading area adjacent to a dissimilar use.
|
3
| |
4
|
Minimum width is required for either wall or berm. In the case
of wall, the minimum width will be maintained clear of structures
and planted in grass or similar material.
|
Table 7.15.2: Minimum Plant Size and Spacing
| ||
---|---|---|
Type of Plant Material
|
Minimum Plant Sizes
|
Spacing Requirements
|
Large deciduous trees
|
2-inch caliper
|
30 feet on-center
|
Small deciduous/ornamental trees
|
1 1/2-inch caliper
6-foot height (clump form)
|
15 feet on-center
|
Evergreen trees
|
7-foot height
|
20 feet on-center informally
12 feet on-center in rows
|
Narrow evergreen trees
|
5-foot height
|
10 feet on-center informally
5 feet on-center in rows
|
Large shrubs
|
30-inch height
|
6 feet on-center informally
4 feet on-center in rows
|
Small shrubs
|
30-inch spread
2 1/2-foot height
|
4 feet on-center
|
Table 7.15.3: Recommended Plant Materials
| |
---|---|
Trees
| |
Evergreen trees
|
Fir; spruce; pine; hemlock; Douglas fir
|
Narrow evergreen trees
|
Red cedar; arborvitae; juniper
|
Large deciduous trees
|
Oak; hard maple; beech; linden; ginkgo (male only); honeylocust
(seedless and thornless varieties); birch
|
Small deciduous/ornamental trees
|
Flowering dogwood; hawthorn; redbud; magnolia; hornbeam; Russian
Olive; flowering crabapple (disease-resistant varieties)
|
Large Shrubs
| |
Deciduous
|
Honeysuckle; lilac; border privet; sumac; buckthorn; Pyracantha;
flowering quince; barberry; forsythia; cotoneaster (Peking, spreading);
Sargent crabapple; dogwood (red osier, grey)
|
Evergreen
|
Irish yew; Hicks yew; Mugo pine; Pfitzer juniper; Savin juniper
|
Small Shrubs
| |
Deciduous
|
Compact burning bush; regal privet; fragrant sumac; Japanese
quince; cotoneaster (cranberry, rockspray); potentilla
|
Evergreen
|
Spreading yews (dense, Brown's, Ward, etc.); Low-spreading junipers
(Andora, Hughes, Tamarack, etc.); dwarf Mugo pine; big leaf wintercreeper
|
Table 7.15.4: Prohibited Plant Materials
| |
---|---|
Trees Not Permitted
| |
Ash
|
Horse chestnut (nut-bearing)
|
Box elder
|
Mulberry
|
Catalpa
|
Poplar
|
Cottonwoods
|
Soft maple (red and silver)
|
Elms (except disease-resistant American Liberty elm)
|
Tree of heaven
|
Honey or black locust (seedless and thornless)
|
Willow
|
Table 7.15.5: Wall Requirements
| |
---|---|
Use
|
Requirements
|
P-1 Vehicular Parking District
|
4-foot 6-inch high wall
|
Off-street parking area (other than P-1 Districts, unless a
greater wall is required by Table 7.15.01)
| |
OS-1, B-1, CBD and B-2 Districts
|
See Table 7.15.1 requirements
|
I-1 and I-2 Districts: open storage areas, loading or unloading
areas, service areas
|
6-foot to 8-foot high wall or fence (Height shall provide the
most complete obscuring possible.)
|
Auto wash, drive-in restaurants
|
6-foot 0-inch high wall
|
Hospital: ambulance and delivery areas
| |
Utility buildings, stations and/or substations
|