HomeMy WebLinkAbout962432.tiffMEMORANDUM
TO: Board of County Commissioners January 2, 1997
From: Kerri D. Keithley, Current Planner
SUBJECT: Ordinance 191 Staff Corrections/Additions
The following is a list of staffs corrections and/or additions to Ordinance 191.
Page 13
Map 2.1, Structural Land Use Map
1. Addition of Mayeda Annexation to Longmont
Page 23
2.6.3.1 Change in verbiage from shall to may and from common open space to maximum lot coverage.
2.6.3.4 Correction of figure number from 4.5 to 2.5
Page 25
2.6.4.2C Addition of 1-25 and SH 119 frontage roads in landscape setback requirements.
Page 35
Map 2.2, Structural Transportation Network
1. Addition of wording "Raised" to 4 Lane Arterial with Median
Page 36-38
Figure 2.10 Road Cross Sections -
1. Labeling of Curb and Gutter on each cross section
2. Addition of a Local Employment/Regional Commercial road cross section
4,ez
962432
The following land use applications are exempt from utilizing the PUD process in the A
(Agricultural) Zone District within the MUD area:
1. Recorded Exemption
2. Subdivision Exemptions
3. Amendments to Recorded and Subdivision Exemptions
4. Zoning Permits for Mobile Homes
5. Zoning Permits for Accessory Dwellings
6. Manufactured Home Zoning Permits
7. Certificate of Compliance
8. Flood Hazard and Geologic Hazard Development Permits
2.6 Landscaping Regulations
2.6.1 Intent
Landscaping is extremely important for ensuring the quality of development in the MUD
area. Trees, shrubs, and other plantings add greatly to the aesthetic appeal while
controlling erosion, reducing glare, lowering temperatures, buffering sounds, and blocking
or diverting wind. As no single landscaping plan can be prescribed for all developments
due to differing land features, topology and soils, the county allows flexibility and
encourages creativity in landscape designs. Landscaping must be sensitive to the
characteristics and maintenance requirements of the planting selected. Species must be
chosen that are hardy for the climate and soil conditions in the MUD area, that can tolerate
traffic, are resistant to disease and insects, and whose maintenance needs can be met. The
following landscaping standards set minimum requirements for all developments within
the MUD area.
2.6.2 Design Criteria
1. Landscapes shall utilize the following principles for maximum use of water: (I) well
planned and approved planting schemes; (2) appropriate selection of drought tolerant
turf species to minimize water needs and the use of water hungry species of turf; (3)
mulch to reduce evaporation; (4) zone plant groupings according to their microclimatic
needs and water requirements; (5) improvement of the soil with organic matter if
needed; (6) efficient irrigation design; and (7) proper maintenance and irrigation
scheduling.
2. Landscapes shall consist of a variety of species. A partial list of plant materials that
are native or adapted to Colorado's Front Range is included in the appendix. Plant
materials that are discouraged within this area include:
Mixed Use Development Plan Page 21
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— - — I-25 ARID Area Boundary
Emplornent Center - High Intensity
Regional Commercial - Medium Intensity
i -AN\ se Center - Lower Intensity
its re. s.e.
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Residential - Mixed Intensity
Limiting Site factors - Lowest Intensity
Regional Park
Community Pak
Neighborhood Pork
Transit Center
Tom/aty Annexations
- County Boundary
Existing Rood
- 4 Lone Raised Median
Regional Trail System
Other Community Trail
- -- Section Line
1-1
5003000 Feet
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I-25 Mixed Use Developement Area Structural Plan
Map 2.1 Structural Land Use Map
December, 1996
Land designated as having Limiting Site Factors on the Structural Land Use Map 2.1, are
primarily defined by the 100 -year floodplain (as defined by FEMA Flood Insurance Rate
Maps) which comprises approximately 4,500 acres, or 38% of the total designated area in
the MUD area. Sites shown with limiting factors also incorporate other important natural
features as well, including wildlife habitat, mature riparian areas, primary drainageways and
sand and gravel resources. Therefore additional land containing Limiting Site Factors is
shown along irrigation canals, ditches and adjacent to lakes. To the maximum extent
practical development within areas having Limiting Site Factors shall be located to preserve
the natural features of the site, to avoid areas of environmental sensitivity, and to minimize
negative impacts and alteration of natural features.
2.3 Common Open Space Regulations
All Planned Unit Developments (PUDs) within the MUD area shall preserve a portion of the
site as common open space. "Common Open Space" is defined as any usable parcel of land
or water essentially unimproved and set aside, dedicated, designated or reserved for public or
private use or enjoyment or for the use and enjoyment of owners or occupants of land
adjoining or neighboring such an area. Common Open Space includes landscape areas that
are not occupied by buildings or uses such as storage or services areas, private courtyards,
parking lots and islands. In all PUD districts except for those containing residential uses,
common open space may include landscape setbacks adjacent to roadways, where the setbacks
are not utilized as parking or storage areas. Common Open Space is not to be included in the
calculation of the maximum coverage per lot. The minimum percentages of each development
devoted to Common Open Space are listed in Table 2.2.
Common Open Space shall be delineated in the sketch plan phase of the PUD process. In
areas preserved as Common Open Space, a detailed description of the type(s) of grass and
landscaping which will be utilized and the maintenance schedule for such landscaping shall be
submitted to the Department of Planning Services.
Table 2.2 Common Open Space for Land Use Categories
Land Use Designation
Percent of Common Open Space Required
Employment Center -High Intensity
20%
Regional Commercial - Medium Intensity
20%
Neighborhood Center - Low Intensity
20%
Residential - Mixed Intensity
20%
Limiting Site Factors - Lowest Intensity
20%30%
Mixed Use Development Plan
Page 18
The following land use applications are exempt from utilizing the PUD process in the A
(Agricultural) Zone District within the MUD area:
1. Recorded Exemption izt t>*A (Agricultural ZpneDistrii
2. Subdivision Exemptions
3. Amendments to Recorded and Subdivision Exemptions
4. Zoning Permits for Mobile Homes
5. Zoning Permits for Accessory Dwellings
6. Manufactured Home Zoning Permits
7. Certificate of Compliance
8. Flood Hazard and Geologic Hazard Development Permits
2.6 Landscaping Regulations
2.6.1 Intent
Landscaping is extremely important for ensuring the quality of development in the MUD
area. Trees, shrubs, and other plantings add greatly to the aesthetic appeal while controlling
erosion, reducing glare, lowering temperatures, buffering sounds, and blocking or diverting
wind. As no single landscaping plan can be prescribed for all developments due to differing
land features, topology and soils, the county allows flexibility and encourages creativity in
landscape designs. Landscaping must be sensitive to the characteristics and maintenance
requirements of the planting selected. Species must be chosen that are hardy for the climate
and soil conditions in the MUD area, that can tolerate traffic, are resistant to disease and
insects, and whose maintenance needs can be met. The following landscaping standards set
minimum requirements for all developments within the MUD area.
2.6.2 Design Criteria
1. Landscapes shall utilize the following principles for maximum use of water: (1) well
planned and approved planting schemes; (2) appropriate selection of drought tolerant turf
species to minimize water needs and the use of water hungry species of turf; (3) mulch
to reduce evaporation; (4) zone plant groupings according to their microclimatic needs
and water requirements; (5) improvement of the soil with organic matter if needed; (6)
efficient irrigation design; and (7) proper maintenance and irrigation scheduling.
2. Landscapes shall consist of a variety of species. A partial list of plant materials that are
native or adapted to Colorado's Front Range is included in the appendix. Plant materials
that are discouraged within this area include:
1. Cotton bearing Cottonwoods (Populus)
2. Siberian and Chinese Elm (Ulmus)
Mixed Use Development Plan Page 21
2.6.3 Landscaping Requirements for Parking Lots
1. At least ten (10) percent of the area of a parking lot must be landscaped if the lot
contains 10 or more spaces. The requirement shall be counted toward the common
openspaee-ma*ilmutnslotcoverage requirement of each zone district. At least seventy
five (75) percent of the required landscape area shall may include living plant material.
2. Berming and shrub or tree planting shall be used to screen parking lots from view of
the roadway. Berms can vary in height depending on location and proximity of
existing trees. Berms shall have smooth transitions from the top of the curb to the
setback line so as to not create snow traps, with allowances made for placement of the
sidewalk. Grading of berms shall not be lumpy or abrupt. (See Figure 2.3)
Figure 2.3 Berming and Screening Parking
3. Landscaping techniques shall be used to alleviate the harsh visual appearance that
accompanies parking lots. (See Figure 2.4) At least 75 percent of the length of the
frontage of the parking lot must be effectively screened.
4. A minimum of 5 percent of the parking area shall be landscaped exclusive of setback
areas. Trees planted in parking areas should be either in bays or planting islands of
at least 5 feet by 5 feet. Trees should be distributed throughout the parking area (See
Figure 442.5).
Figure 2.4 Screening Parking from Roadways
Mixed Use Development Plan Page 23
2.6.4 Landscaping Requirements Along Roadway Corridors
1, Intent
The major roadway corridors within the MUD area are I-25, State Highway 119, State
Highway 66, and Weld County Road 1. These roadways play an important role in the
function and image of the MUD area. The following design standards relate to the
visual quality of these four roadways. As the MUD area develops, additional
roadways may require similar consideration as these existing major roadway corridors.
This determination will be made by the Weld County Department of Public Works and
the Colorado Department of Transportation. All roadways that are not considered
major roadway corridors are considered secondary roadways.
2. Design Criteria
a. Plantings along road right-of-ways shall be integrated with the rest of the site.
b. That portion of a lot in any zone district which abuts a public or private road right-
of-way shall be landscaped with a minimum 2 '/2 -inch caliper shade tree or 6 -foot
minimum height coniferous tree at a distance of ten (10) feet, measured at a right
angle from the lot line towards the interior of the lot, for every 40 linear feet of
street frontage. Trees may be grouped with a maximum distance of 100 feet
between trees or groupings, with exceptions made at entrance drives.
c. A minimum landscape setback along I-25, SH 119, aud°their subserluerd frontage
roads shall be fifty (50) feet measured from the existing or planned future right-of-
way.
d. Along I-25, State Highway 119, State Highway 66, and Weld County Road 1, tree
planting distances shall be clustered or grouped from the roadway to avoid a
straight line of trees. The effectiveness of the screening shall be increased by
planting trees and shrubs in layered beds (two or more rows of plant material
rather than a single row). A mix of coniferous and deciduous trees and shrubs
shall be planted in clusters or groupings.
e. Applicants adjacent to I-25 and/or SH 119 shall construct a berm along I-25 and/or
SH 119 with maximum 5:1 side slopes to a height sufficient to screen ground plane
development (parking lots, storage areas, or other similar site elements) as far as
180' from the right-of-way line (50' of landscape setback plus 130' of site
development). The maximum height berm required shall be 6' above the existing
elevation in the location of the berm. If needed, additional height beyond that
which can be achieved with a 6' high berm shall be achieved through dense
landscape plantings. Plantings on top of berms shall be designed so as to not
Mixed Use Development Plan Page 25
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wmni I-25 MUD Area Boundary
—a— Interstate
■•= 6 Lane Major Arterial
- _ 4 Lone Arterial with Raised Median
- 4 Lane Undivided — Secondary
---- 2 Lane — Collector
• Existing Signal
Q New Signal
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1-25 Mixed Use Development Area Structural Plan
Map 2.2 Structural Transportation Network
* DEPICTS TRANSPORTATION PLAN AS BUILD OUT OCCURS
December, 1996
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