HomeMy WebLinkAboutagenda.council.worksession.20180213P1
THE- Crry or ASPFN
CITY COUNCIL WORK SESSION
February 13, 2018
4:00 PM, City Council Chambers
MEETING AGENDA
L Water Efficient Landscape Ordinance - Pilot Program Update
II. Short Range Transit Plan
III. Board Interviews
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MEMORANDUM
TO: Mayor and City Council
FROM: Lee Ledesma, Utilities Finance & Administrative Manager
THRU: David Hornbacher, Director of Utilities
Scott Miller, Public Works Director
DATE OF MEMO: February 9, 2018
MEETING DATE: February 13, 2018
RE: Water Efficient Landscape Ordinance --
Pilot Program Update
REQUEST OF COUNCIL: Staff requests review of, and feedback on, the Water Efficient
Landscape Ordinance pilot program. This includes a discussion on a water efficient landscaper
certification training program, the use of rain barrels for irrigation, an update on use of graywater
in the state of Colorado, and possible changes to City's current Water Efficient Landscaping
Standards.
PREVIOUS COUNCIL ACTION: On May 22, 2017, Council approved at Public Hearing
Ordinance 16, Series 2017 to adopt the Water Efficient Landscape Ordinance. Prior to the
Public Hearing, the First Reading of the Landscape Ordinance was held on May 8, 2017, which
followed an initial worksession held on April 18, 2017.
Additionally, on September 28, 2015 City Council adopted the Roaring Fork Watershed
Regional Water Efficiency Plan and the City of Aspen Municipal Water Efficiency Plan. In both
those plans, Aspen identified landscape regulations as an important next step for water
efficiency.
BACKGROUND: Conservation is an important component of Aspen's Integrated Water
Supply System and effective conservation practices enable the City to manage our water supplies
more efficiently. The City of Aspen has been promoting water efficiency since the mid-1990s.
The City approved its first water conservation plan in 1996. Aspen's water utility currently has
limited storage and the water supply is most vulnerable from the late summer into fall when
vegetation is thirsty and resulting landscape irrigation demands are still high while stream flow
from melted snow pack is diminishing. This water conservation/efficiency program is focused
on efficient outside water use, which helps mitigate this vulnerability.
Promoting water conservation, preventing water waste, and protecting water quality have been
identified as important goals for the Aspen Utility and Community. These standards promote
efficient development and use of water within the City of Aspen's water service area while
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considering the benefits of a healthy landscape. Managing outdoor landscaping demands
through land use regulations for new development is being considered throughout Colorado and
Aspen's current Water Efficient Landscape Ordinance is an important model for the West Slope
with an opportunity to reduce some of the impact from future demands.
DISCUSSION:
Overview: The water efficient landscaping standards and ordinance address landscaping
material and irrigation design and practices. A minimum 12-month pilot phase is currently in
affect since June 22, 2017. During the pilot phase, requirements as set out in the Water Efficient
Landscaping Standards are not waived. This includes: site plan; landscape plan; irrigation plan;
and, a completed water budget analysis. What is not being required during the pilot phase is
meeting the water budget of 7.5 gallons per square foot per irrigation season or complying with
identified issues that may arise during a third party post -installation site audit. Neither of these
two items will hold up an owner's Certificate of Occupancy during the active pilot phase. The
pilot phase is designed to assist staff in making final recommendations to Council at the end of
the program on a maximum applied water budget. The pilot program will also advise staff on
how processes and standards may need to be adjusted prior to full implementation of the Water
Efficient Landscape Standards.
Status o Pilot Implementation:
17 building permit applications have triggered compliance to the new Water Efficient Landscape
Ordinance since it became effective on June 22, 2017. Out of those 17, 3 have been outside City
limits and are part of the City's pre -approval process that occurs prior to owner submitting a
County building permit application. As a result of these 17 submittals that are in different stages
of their review process, staff are beginning to identify possible modifications to the landscaping
standards based on feedback from owners and landscape professionals.
Third Party Audits:
The standards require an irrigation audit report performed by a third party certified landscape
irrigation auditor. Currently, the closest certified auditors are in Grand Junction and Golden.
Staff seeks direction from council on developing a local certification program. The Qualified
Water Efficient Landscaper (QWEL) certification program has been recently researched and is
being implemented by other Colorado water providers with landscape ordinances already in
place. See Exhibit D. Initial discussions have taken place between city staff and Roaring Fork
Conservancy regarding a partnership to provide this training in the Roaring Fork Valley.
Next Steps:
Staff is looking for direction on topics to be covered and addressed during this worksession.
They include:
• Length of Pilot Program
• Local Certification Program including potential partnership with the Roaring Fork
Conservancy
• Possible modifications to the Water Efficient Landscaping Standards
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FINANCIAL IMPACTS: A locally offered Qualified Water Efficient Landscaper (QWEL)
certification training program is anticipated to have an associated initial cost on the order of
$20,000, with ongoing operational costs that depend upon the number of training sessions
offered per year. This cost includes: a one-time onboarding fee to QWEL; a partnership with
Roaring Fork Conservancy for preparation of local training content and event coordination,
advertising and public outreach; and, the cost of training materials, the trainer, the exam grading,
etc. It is the City's goal to approach the other municipal water providers that are part of the
Roaring Fork Regional Water Efficiency Plan to participate in the program with advertising and
funding. Additionally, current staff time to manage the Water Efficient Landscape Ordinance
includes approximately 3/4 FTE in the Parks department and a 1/2 FTE in the Water department.
The plan review and permit coordinator processes involved in managing this ordinance is for
both City and County parcels that receive City of Aspen water. Currently, the above -mentioned
expenses are covered by an existing Utilities Development Review fee, which has not increased
since January 2017 for our city and county water customers.
ENVIRONMENTAL IMPACTS: If a maximum water budget of 7.5 gallons/sq.ft./season is
utilized after the end of the pilot phase, the Landscape Ordinance is estimated to reduce irrigation
water demand by 14 % as compared to new plan submittals sampled prior to implementation.
And, when compared to typical existing homes, there is a potential landscape water use savings
of up to 60% when these properties refresh their landscaping and irrigation systems. Using a
water budget of 7.5 gallons/sq. ft./irrigation season (14% savings) would put the City on target to
achieve the 2015 Water Efficiency Plan projection of 50 acre-feet per year of water savings by
2035.
RECOMMENDED ACTION: Staff recommends Council provide direction on length of pilot
program, a local irrigation landscape certification program, and possible changes to the existing
Water Efficient Landscaping Standards.
ALTERNATIVES: City Council could choose to not address these proposed programs and
modifications at this time and request an additional update on the pilot program at some future
date.
CITY MANAGER COMMENTS:
ATTACHMENTS:
Exhibit A — Water Efficient Landscaping Standards
Exhibit B — Element Water Consulting Memo — Preliminary Analysis of Potential Landscape
Water Supply from Residential Rainwater Catchment in Aspen
Exhibit C — Element Water Consulting Memo — Colorado Graywater Control Regulation #86;
Utility Participation Summary
Exhibit D — Element Water Consulting Memo — QWEL Program Information
Exhibit E — Water Efficient Landscape Ordinance Submission Data
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WATER EFFICIENT
LANDSCAPING
STANDARDS
The Water Efficient Landscaping Standards provide policies, guidelines,
and minimum criteria to governmental agencies, design professionals,
private developers, community groups, and homeowners for all new
development. These standards promote efficient development and use
of water within the City of Aspen's water service area.
April 28, 2017
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Contents
1. OBJECTIVE AND PURPOSE.....................................................................................................................2
1.1
Objective.......................................................................................................................................
2
1.2
Purpose.........................................................................................................................................
2
2. APPLICABILITY
AND GENERAL PROVISIONS..........................................................................................2
2.1
Applicability...................................................................................................................................2
2.2
Exceptions.....................................................................................................................................2
2.3
Pilot Phase.....................................................................................................................................3
2.4
Variances and Existing Compliance...............................................................................................3
2.5
Appeals..........................................................................................................................................4
3. DEFINITIONS
..........................................................................................................................................5
4. DOCUMENTATION................................................................................................................................9
4.1
Landscape and Irrigation Documentation Package......................................................................9
4.2
Compliance with the Landscape and Irrigation Documentation Package..................................10
5. LANDSCAPE CRITERIA..........................................................................................................................11
5.1
Soil Criteria..................................................................................................................................11
5.3
Non -Living General Landscape Design Criteria...........................................................................14
5.4
Landscape Criteria.......................................................................................................................14
5.5
Landscape Plan............................................................................................................................16
6. IRRIGATION SYSTEM CRITERIA............................................................................................................17
6.1
Irrigation System Requirements.................................................................................................17
6.2
Hydrozone Requirements...........................................................................................................19
6.3
Irrigation Design Plan..................................................................................................................20
6.5
Landscape Irrigation Audit..........................................................................................................21
6.6
Approval Letter...........................................................................................................................
21
6.7
Irrigation System Maintenance Schedule...................................................................................22
6.8
Irrigation Scheduling...................................................................................................................22
6.9
Irrigation Management...............................................................................................................23
APPENDIX A — WATER EFFICIENT LANDSCAPE WORKSHEET
APPENDIX B — GREENCO PLANT LIST
APPENDIX C—COLORADO STATE UNIVERSITY FIREWISE PLANT LIST
APPENDIX D — CITY OF ASPEN AND PITKIN COUNTY WILDFIRE HAZARD ASSESSMENT MAPS
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1. OBJECTIVE AND PURPOSE
1.1 Objective
The Water Efficient Landscaping Standards provide policies, guidelines, and minimum landscaping
design, installation, maintenance, and management criteria to governmental agencies, design
professionals, private developers, community groups, and homeowners for new development and
significant remodels. These standards promote efficient development and use of water within the City
of Aspen's water service area. Implementation of these standards fulfills certain recommendations
identified in the City of Aspen's Municipal Water Efficiency Plan (updated in 2015), the Roaring Fork
Regional Water Efficiency Plan (2015), and the Roaring Fork Watershed Plan (2012).
1.2 Purpose
1.2.1 Promote the values and benefits of healthy landscapes while recognizing the need to invest
water and other resources as efficiently as possible.
1.2.2 Establish a structure for planning, designing, installing, maintaining and managing water -
efficient landscapes in new construction and renovated/rehabilitated projects.
1.2.3 Use water efficiently without waste by setting a Maximum Applied Water Budget as an
upper limit for water use and reduce water use to the lowest practical amount.
2. APPLICABILITY AND GENERAL PROVISIONS
2.1 Applicability
30 days after adoption of Ordinance 16, Series 2017, these standards shall apply to the following
projects that use City of Aspen potable water:
2.1.1 Landscaping, grading, installing or disturbing hardscapes, additions to structures, etc. that
has a disturbance area greater than 1,000 square feet and greater than 25% of the entire
site.
2.1.2 All new construction with internal work only that demolishes greater than 50% of the
existing structure.
2.2 Exceptions
The standards do not apply to:
2.2.1 Projects that do not have water supplied or conveyed by the City of Aspen.
2.2.2 There may be special circumstances, including but not limited to the following, in which
portions of the standards shall not apply. In these circumstances, applicants shall follow the
variance process described in Section 2.4 below.
a. Irrigation of public parks, sports fields, golf courses, and schools.
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b. Landscapes where tree preservation is required under the local tree ordinance.
c. Landscapes including public right-of-way.
d. Registered local, state or federal historical sites.
e. Ecological restoration projects that do not require a permanent irrigation system.
f. Mined -land reclamation projects that do not require a permanent irrigation system.
g. Stormwater treatment facilities that require irrigation.
h. Wildfire mitigation areas planned to establish defensible space.
2.3 Pilot Phase
A 12-month pilot phase will begin 30 days after adoption of Ordinance 16, Series 2017, During the pilot
phase, all of the standards and documentation described in this document will be required but the City
will not deny a project a Certificate of Occupancy for failure to meet the Maximum Applied Water
Budget standard or based on results of the post -installation site audit report. The City encourages
efforts be made, to the extent possible, to meet the Maximum Applied Water Budget standard during
the pilot phase. Enforcement of these standards will begin a minimum of one year after adoption of
Ordinance 16, Series 2017, including inspections, audits, and certifications. During the pilot phase, the
City is also considering programs associated with utilizing graywater as it relates to the standards.
2.4 Variances and Existing Compliance
2.4.1 Variances
The City may grant variances to the Water Efficient Landscaping Standards when practical difficulties
or unnecessary hardships exist that cause inconsistencies with the purpose and intent of the
standards.
Requests for variances from the standards, policies, or submittal requirements of this document
shall be submitted in writing with appropriate documentation and justification to the City Utilities
Director. Variance requests must, at a minimum, contain the following:
• Criteria under which the applicant seeks a variance;
• Justification for not complying with the standards;
• Proposed alternate criteria or standards to comply with the intent of the criteria, -
Supporting documentation, including necessary calculations;
• The proposed variance's potential adverse impacts for adjacent landowners; and
• An analysis of the variance request, signed by a qualified landscape professional or qualified
irrigation design professional, depending on the topic of the request.
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Upon receipt of a complete application for a variance, the City Utilities Director shall prepare a
statement to recommend that the variance be approved or denied or to request a modification of
the proposed variance.
2.4.2 Existing Compliance
The City may grant a determination of compliance for existing projects meeting the minimum
standards.
Requests for determination of compliance shall be submitted in writing with appropriate
documentation and justification to the City Utilities Director. Requests for determination of existing
compliance must, at a minimum, contain the following:
• Landscape and Irrigation Documentation Package; and
• Irrigation audit report performed by a third party certified landscape irrigation auditor.
Upon receipt of a complete application for a determination of existing compliance, the City Utilities
Director shall prepare a statement to recommend that the determination be approved or denied or
to request a modification of the proposed determination.
2.5 Appeals
2.5.1 Initiation
An applicant aggrieved by an order, requirement, decision, or determination of the City Utilities
Director may be appealed to the Administrative Hearing Officer. The notice of appeal shall be filed
with the City Utilities Director within fifteen (15) days following the date of such order, requirement,
decision, or determination. The notice of appeal shall state in detail the action appealed, the
grounds for the appeal, and the relief sought. Failure to file such a notice of appeal within the
prescribed time shall constitute a waiver of any rights under this section to appeal any order,
requirement, decision, or determination.
2.5.2 Effect of Filing an Appeal
The filing of a notice of appeal shall stay any proceedings in furtherance of the action appealed from
unless the City Utilities Director certifies in writing to the Administrative Hearing Officer that a stay
poses an imminent peril to life or property, in which case the appeal shall not stay further
proceedings. The Administrative Hearing Officer may review such certification and grant or deny a
stay of proceedings.
2.5.3 Timing of Appeal
The Administrative Hearing Officer shall consider the appeal within thirty (30) days following the
date of filing the notice of appeal, or as soon thereafter as is practical under the circumstances.
I.
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2.5.4 Action by Administrative Hearing Officer
The Administrative Hearing Officer shall review the record of the action taken by the City Utilities
Director, and provide a decision to the Applicant in writing. The Administrative Hearing Officer may
reverse or affirm wholly or partly the order, requirement, decision or determination appealed from
and shall enter such order, as they deem appropriate under the circumstance.
3. DEFINITIONS
Application rate: the depth of water applied to a given area, usually expressed in inches per hour.
Applied water: the portion of water supplied by the irrigation system to the landscape (supplemental to
precipitation).
Approval Letter: the document showing the project has been installed and inspected per the approved
irrigation design plan.
Automatic controller: a mechanical or solid state timer, capable of operating landscape irrigation
stations and setting the schedule (days and length of time) for water application.
Backflow prevention device: a safety device used to prevent pollution or contamination of the water
supply due to the reverse flow of water from the irrigation system.
Check valve or anti -drain valve: a valve located under, or incorporated within, a sprinkler head or other
location within the irrigation system, to hold water in the system so it minimizes drainage from the
lower elevation sprinkler heads when the system is off.
Certified irrigation designer: a person certified to design irrigation systems by an accredited academic
institution, Irrigation Association's Certified Irrigation Designer program, American Society of Irrigation
Consultant's Professional Irrigation Consultant designation or other irrigation designer program labeled
by U.S. Environmental Protection Agency's WaterSense program.
Certified landscape irrigation auditor: a person certified to perform landscape irrigation audits by an
accredited academic institution, a professional trade organization or other program labeled by U.S.
Environmental Protection Agency's WaterSense program.
Distribution uniformity: the measure of the uniformity of irrigation water over a defined area.
Disturbance area: disturbance is defined by the external area of the building where the ground is
disturbed which includes but is not limited to soil grading, landscaping, removing impervious area,
adding impervious area, replacing impervious area, layback areas, and stock pile areas.
Ecological restoration project: a project where the site is intentionally altered to establish a defined,
indigenous, historic ecosystem.
Emission device: a component of the system that disperses water to the landscape and includes
sprinklers, bubblers, emitters, microsprays, etc.
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Established landscape: the point at which plants in the landscape have developed roots into the soil
adjacent to the root ball. Typically, most plants are established after one or two years of growth.
Establishment period: the first year after installing the plant in the landscape or the first two years if
irrigation will be terminated after establishment. Typically, most plants are established after one or two
years of growth. Native habitat mitigation areas and trees may need three to five years for
establishment.
Evapotranspiration: the quantity of water evaporated from adjacent soil and other surfaces and
transpired by plants during a specified time. See below for "reference ET".
Flow meter or sensor: an inline device installed at or near the supply point of the irrigation system that
produces a repeatable signal proportional to flow rate. Flow meters must be connected to an irrigation
controller, or monitor capable of receiving flow signals and operating master valves. This combination
flow meter/controller may also function as a landscape water meter or sub meter.
Flow rate: the rate at which water flows through pipes and valves (gallons per minute or cubic feet per
second).
Graywater: untreated wastewater that has not been contaminated by any toilet/urinal discharge, has
not been affected by infectious, contaminated, or unhealthy bodily wastes, and does not present a
threat from contamination by unhealthful processing, manufacturing, or operating wastes. "Graywater"
includes, but is not limited to, wastewater from bathtubs, showers, bathroom washbasins, clothes
washing machines, and laundry tubs, but does not include wastewater from kitchen sinks or
dishwashers.
Hardscapes: a landscape feature that is made of any durable material (pervious and non -pervious).
Hydrozone: a portion of the landscaped area having plants with similar water needs that are served by a
valve or set of valves with the same schedule. A hydrozone may be irrigated or non -irrigated. For
example, a naturalized area planted with native vegetation that will not need supplemental irrigation
once established is a non -irrigated hydrozone.
Infiltration rate: the rate of water entry into the soil expressed as a depth of water per unit of time
(inches per hour).
Irrigation audit: an in-depth evaluation of the performance of an irrigation system conducted by a
Certified Landscape Irrigation Auditor. An irrigation audit includes, but is not limited to: inspection,
system tune-up, system test with distribution uniformity or emission uniformity, reporting overspray or
runoff that causes overland flow, and preparation of an irrigation schedule. The audit shall be conducted
in a manner consistent with the Irrigation Association's Landscape Irrigation Auditor Certification
program or other U.S. Environmental Protection Agency "WaterSense" labeled auditing program.
Irrigation efficiency: the measurement of the amount of water beneficially used divided by the amount
of water applied. Irrigation efficiency is derived from measurements and estimates of irrigation system
characteristics and management practices. Greater irrigation efficiency can be expected from well
designed and maintained systems.
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Irrigation Design Plan: the documents including the scaled drawing plan and any required forms showing
calculations that are reviewed, approved and for which a permit could be issued.
Irrigation survey: an evaluation of an irrigation system that is less detailed than an irrigation audit. An
irrigation survey includes, but is not limited to: inspection, system test, and written recommendations to
improve performance of the irrigation system.
Irrigation water use analysis: a review of water use data based on meter readings and billing data.
Landscaped area: the entire parcel less the building footprint, driveways, non -irrigated portions of
parking lots, hardscapes- such as decks and patios, and other non -porous areas. Water features are
included in the calculation of the landscaped area. Areas dedicated to edible plants, such as orchards or
vegetable gardens are not included.
Landscaping and/or landscape improvements: plantings of grass, shrubs, trees or similar living plants,
with minimal use of other ground surface treatment such as decorative rock, bark, or stone. These inert
materials are allowed to be used in conjunction with live material in planting beds, but do not count
toward the calculations of required landscaping and/or landscaping improvements.
Landscape water meter: an inline device installed at the irrigation supply point that measures the
volume of water into the irrigation system by using a flow totalizing device to record water use.
Lateral line: the water delivery pipeline that supplies water to the emitters or sprinklers from the valve.
Low flow irrigation or drip irrigation: the application of irrigation water at low pressure through a system
of tubing or lateral lines and emitters such as point source emitters, dripper lines, microsprays and
bubblers. Low flow irrigation systems apply small volumes of water slowly at or near the root zone of
plants.
Main line: the pressurized pipeline that delivers water from the water source to the valve or outlet.
Master shut-off valve: a lockable automatic valve installed at the irrigation supply point which controls
water flow into the irrigation system. When this valve is closed, water will not be supplied to the
irrigation system.
Maximum Applied Water Budget: the upper limit of annual applied water (supplemental irrigation
water) for the established landscaped area as specified in Appendix A. It is based upon the area's
reference evapotranspiration and is adjusted for plant factors and irrigation efficiency, two major
influences upon the amount of water that needs to be applied to the landscape.
Microclimate: the climate of a small, specific area that may contrast with the climate of the overall
landscape area due to factors such as wind, sun exposure, plant density, or proximity to reflective
surfaces.
Mulch: any organic material such as leaves, bark, straw, compost or inorganic mineral materials such as
rocks, gravel, pebbles, or decomposed granite left loose and applied to the soil surface for the beneficial
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purposes of reducing evaporation, suppressing weeds, moderating soil temperature, and preventing soil
erosion.
New construction: for the purposes of these standards, a new building with a landscape or other new
landscape, such as a park, playground, or greenbelt.
Non-residential landscape: landscapes in commercial, institutional, industrial and public settings that
may have areas designated for recreation or public assembly. It also includes portions of common areas
of common interest developments with designated recreational areas.
Operating pressure: the pressure at which the parts of an irrigation system are designed by the
manufacturer to operate.
Overhead sprinkler irrigation systems: systems that deliver water through the air (pop -ups, rotors, etc.)
Overspray: the water that is delivered beyond the target area.
Permeable: any surface or material that allows the passage of water through the material and into the
underlying soil.
Project applicant: the individual or entity submitting a plan to request a permit, plan check, or design
review from the City. A project applicant may be the property owner or designee including the
contractor.
Rain sensor or rain sensing shut-off device: a component which automatically suspends an irrigation
event when it rains.
Reclaimed water, recycled water, or treated sewage effluent water: treated or recycled waste water of a
quality suitable for non -potable uses such as landscape irrigation and water features. This water is not
intended for human consumption.
Record drawing: a set of reproducible drawings which show changes in the work made during
construction and which are usually based on drawings marked up in the field and other data furnished
by the contractor.
Recreational area: areas of active play or recreation such as sports fields, school yards,
picnic grounds, or other areas with intense foot traffic.
Reference evapotranspiration or ET: a standard measurement of environmental parameters which
affect the water use of plants. ET is typically expressed as the depth of water in inches or the volume of
water in gallons used by an irrigated landscape area over a period of time, as represented in Appendix A,
and is based on an estimate of the evapotranspiration of a large field of four- to seven-inch tall, cool -
season grass that is well watered. Reference evapotranspiration (ETo) is used as the basis of determining
the Maximum Applied Water Budget. One inch is approximately 0.623 gallons per square foot.
Remote control valve: a device used to control the flow of water in the irrigation system.
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Residential landscape: landscapes surrounding single or multifamily homes such as duplexes.
Runoff: water which is not absorbed by the soil or landscape to which it is applied and flows from the
area. For example, runoff may result from water that is applied at too great a rate (application rate
exceeds infiltration rate), run times are set too long or a valve is stuck open, when there is a severe
slope, etc.
Smart irrigation controller: an automatic timing device with nonvolatile memory used to remotely
control valves that operate an irrigation system. Smart irrigation controllers are able to self -adjust and
schedule irrigation events using either evapotranspiration (weather -based), soil moisture data or flow
data or a combination of methods.
Soil moisture sensing device or soil moisture sensor: a device that measures the amount of water in the
soil. The device may also suspend or initiate an irrigation event.
Sprinkler head: a device that sprays water through a nozzle.
Static water pressure: the pipeline or municipal water supply pressure when water is not flowing.
Station: typically an area served by one valve; for very large properties, a station could control two or
more valves in a given "zone".
Sub meter: a metering device to measure water applied to the landscape that is installed after the
primary utility water meter.
Turf or turfgrass: a surface layer of earth containing mowed grass with its roots. Annual bluegrass,
Kentucky bluegrass, Perennial ryegrass, fescue, and Tall fescue are cool -season grasses. Bermudagrass,
Blue Grama, and Buffalo grass are warm -season grasses.
Valve: a device used to control the flow of water in the irrigation system.
Watering window: the period in which irrigation is allowed (e.g. time of day, days of the week, amount
over a period of a week, etc.).
Zone: typically, an area served by a single control valve, sometimes referred to as a "station". Zones are
comprised of plant materials and soil types with similar water requirements.
4. DOCUMENTATION
The following documentation is required for all projects subject to the Water Efficient Landscaping
Standards. The City of Aspen reserves the right to conduct audits as deemed necessary, at the expense
of the customer, if there is indication that the criteria have not been followed.
4.1 Landscape and Irrigation Documentation Package
The Landscape and Irrigation Documentation Package shall include the following six (6) elements:
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4.1.1 Checklist of all documents in Landscape and Irrigation Documentation Package.
4.1.2 Project information
a. Date
b. Project contacts for the project applicant, landscape and irrigation system installer, and
property owner
c. Project address (if available, parcel and/or lot number(s))
d. Total landscape area and total irrigated area (square feet)
e. Project type (e.g., new, rehabilitated, public, private, homeowner -installed)
f. Water supply type (e.g., potable, recycled, well)
g. For Pitkin County residents only: Recorded Site Plan and Activity Envelope.
4.1.3 Applicant signature and date with statement, "I agree to comply with the requirements of
the Water Efficient Landscaping Standards and submit a complete Landscape and Irrigation
Documentation Package".
4.1.4 Water Efficient Landscape Worksheet
4.1.5 Landscape Design Plan with Soil Information
a. All applicable soil criteria and standards shall be noted on the landscape design plan.
b. A soil analysis report and associated information shall be provided if the project
applicant chooses to appeal the standard soil amendment criteria.
4.1.6 Irrigation Design Plan
4.2 Compliance with the Landscape and Irrigation Documentation Package
4.2.1 Prior to construction, the City of Aspen shall:
a. Provide the project applicant with the standards and procedures for permits, plan
checks, or design reviews.
b. Review the Landscape and Irrigation Documentation Package submitted by the project
applicant.
c. Approve or deny the Landscape and Irrigation Documentation Package.
I.
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d. Issue a permit or approve the plan check/design review for the project applicant.
4.2.2 Prior to construction, the project applicant shall:
a. Submit a Landscape and Irrigation Documentation Package to the City of Aspen.
b. Receive the authorization to proceed.
4.2.3 Upon approval of the Landscape and Irrigation Documentation Package by the City of Aspen,
the project applicant shall:
a. Receive a permit or approval of the plan check or design review and retain record to
include the date of the permit in the Approval Letter.
b. Submit a copy of the approved Landscape and Irrigation Documentation Package along
with the record drawings, and any other information to the property owner or his/her
designee.
S. LANDSCAPE CRITERIA
Unless otherwise specified, the criteria within this section shall apply to all applicable projects. The City
of Aspen reserves the right to conduct inspections as deemed necessary, at the expense of the project
applicant, if there is indication that the criteria have not been followed.
5.1 Soil Criteria
5.1.1 Soil Amendment
a. Topsoil of irrigated grasses (including turf), shrubs, perennials, and annuals shall be a
sandy loam to a depth of at least 6 inches (6") containing at least 5 percent (5%) organic
matter by volume.
b. Tree soil should have a minimum depth of 3 feet (3'). Both topsoil and subsoil layers
shall be sandy loam. The top soil shall be at least 6 inches (6") and have 5 percent (5%)
organic matter by weight and subsoil shall have at least one to three percent (1 - 3%)
organic matter by weight.
c. A minimum of four (4) cubic yards of organic matter soil amendment per one -thousand
square feet of landscaped area shall be required as necessary to meet the 5 percent
(5%) organic matter specification.
d. Soil amendment organic matter shall consist of either Class I and Class II compost.
e. Soil Evaluation and Improvement
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The following soil evaluation procedure may be utilized if the project applicant chooses
to appeal the standard soil amendment criteria and/or if the City of Aspen requires
verification of the soil amendment. The soil evaluation determines the condition of the
soil related to texture, acidity, salts, and plant nutrient availability.
The applicant must discuss the appeal with the City of Aspen to determine the
procedures and submittal requirements.
ii. The applicant shall submit an explanation in narrative form explaining the appeal
and attach any information including site -specific data and the following soil
analyses:
(a) A soil analysis shall be conducted by a professional soil scientist at a certified
soils laboratory.
(b) Soil sample(s) shall be taken after over -lot grading, if applicable, and prior to
landscaping.
(c) The soil sample must represent a uniform area. Differences in texture (sand, silt,
clay), color, slope, degree of erosion, drainage, past management practices,
types of plant materials designed for each area should be taken into account
when collecting the sample. The soil scientist shall determine the sample sites,
depth and frequency necessary to reflect a representative sample of the site
and to coincide with the plant material intended for the area in the design.
Recommended sampling frequency is no less than one (1) sample per five -
thousand (5,000) square feet. Any sampling less than this frequency shall be
justified by the soil scientist.
(d) The soil analysis shall determine the organic and inorganic composition of
native/indigenous soil in landscaped areas, and shall include:
• Soil texture;
• Total exchange capacity;
• Conductivity;
• Organic matter;
• Acidity; and
• Content of nitrogen (NO3, Phosphorus, Potassium, Zinc, Iron, Copper,
Manganese and Lime).
iii. The soil analysis shall include specific recommendations based on the soil test
results for the type of plant material to be grown in each landscaped area. The type
and volume of soil amendment shall be determined by the soil scientist and be
consistent with the indigenous soil and the needs of the plant materials in each area
of the landscape.
I.
City of Aspen Water Efficient Landscaping Standards Page 12 of 24
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iv. Upon receipt of the information, the City of Aspen shall approve or deny the soil
amendment. If the amendment is denied, the City of Aspen shall provide
information to the project applicant regarding additional requirements.
5.1.2 Soil Preparation
a. Amendment shall be tilled to a minimum depth of six inches (6").
b. Site shall be graded to within two -tenths of a foot (2/10t"') of the grading plan.
c. Site shall be free of rocks and debris over one inch (1") diameter in size. Rocks and
debris 0.5 inch (0.5") to one inch (1") shall not exceed 5 percent (5%) by volume and
gravel 0.6 inch (0.6") to 1.25 inches (1.25") shall not exceed 5 percent (5%) by
volume. Particles such as concrete, brick, glass, metal, wood or plastic greater than one
inch (1") shall not be allowed. The total volume of these materials smaller than one inch
(1") shall not exceed 5 percent (5%).
d. Site shall be free of dirt clods over three-quarter inch (3/4") diameter in size. Dryland
seed areas may contain dirt clods up to two inch (2") diameter in size.
Stockpiling - Stripping and stockpiling of indigenous soil (topsoil) shall be required
during construction (except as waived by the City of Aspen). The replacement of this
soil, plus additional soil amendments, are critical to successful plant material
establishment, ongoing health, and efficient use of water through the life of the
project.
e. The soil shall have no herbicides, heavy metals, biological toxins or hydrocarbons that
impact plant growth or exceed the EPA's standards for soil contaminant.
f. All applicable soil criteria and standards shall be noted on the landscape design plan.
Written verification of approved soil amendment type and volume is required. Projects
with inadequate soil amendment and preparation will not be approved.
5.1.3 Soil Inspection
a. Soil inspections prior to installation of plant material may be conducted by the City of
Aspen as deemed necessary and shall include a review of adherence to all criteria and
performance standards.
b. Written documentation reflecting approved volume and type of soil amendment is
required upon inspection.
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5.3 Non -Living General Landscape Design Criteria
5.3.1 Organic Mulch
a. Shall be applied at one (1) cubic yard per eighty (80) square feet at a depth of four (4)
inches, and as appropriate to each species.
b. Shall be applied to the soil surface, not against the plant stem or high against the base
of trunks to minimize disease.
Organic mulch material includes bark and wood chips. Avoid mulch consisting of
construction debris such as pallets.
5.3.2 Inorganic Mulch
a. Inorganic mulch includes rock, gravel, or pebbles.
b. Rock mulch shall have a minimum depth of two inches (2").
5.4 Landscape Criteria
5.4.1 Plant Material'
a. All irrigated landscaped areas must be included in the water budget calculation and the
total irrigation water need for all zones cannot exceed the Maximum Applied Water
Budget of 7.5 gallons/season/square-foot of irrigated landscape area (12
inches/season). Aside from the use of invasive and/or noxious plant species, any plant
can be utilized in the landscape plan. The GreenCO Plant List provides water use
categories that can be used for calculating the plant water need. An estimate of the
plant water need, in gallons per square foot per season, must be provided for any plants
that are not currently included in the GreenCO Plant List. See Appendix A for details
regarding the Maximum Applied Water Budget calculation and Appendix B for the
GreenCO Plant List.
b. Each hydrozone shall have plant materials with similar water use.
c. Plants shall be selected and planted appropriately based upon their adaptability to the
climatic, soils, and topographical conditions of the project site. To encourage the
efficient use of water, the following are highly recommended:
' See also:
Pitkin County Revegetation Guide http://pitkincounty.com/documentcenter/view/2937;
Pitkin County Riparian Revegetation Guide http://www.pitkincounty.com/DocumentCenter/View/2938; and
Pitkin County Approved Seed Mixes http://pitkincounty.com/DocumentCenter/View/2936.
I.
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i. Selection of plants from the GreenCO Plant List included in Appendix B, in keeping
with the character of the community, and particularly water -conserving plant and
turf species.
ii. Protection and preservation of native species and natural vegetation.
iii. Selection of plants based on disease and pest resistance.
iv. The use of invasive and/or noxious plant species is strongly prohibitedZ.
v. Selection of trees based on applicable local tree ordinance or tree shading
guidelines.
vi. Recognize the horticultural attributes of plants (i.e., mature plant size, invasive
surface roots) to minimize damage to property or infrastructure (e.g., buildings,
sidewalks, power lines).
vii. Consider the solar orientation for plant placement to maximize summer shade and
winter solar gain.
d. Turf is not allowed on slopes greater than twenty-five percent (25%) where the toe of
the slope is adjacent to an impermeable hardscape and where 25% means 1 foot of
vertical elevation change for every 4 feet of horizontal length (rise divided by run x 100 =
slope percent).
e. Avoid fire -prone plant materials and highly flammable mulches. See Appendix C for a
recommended list of plants to best prepare for wildfire' and Appendix D for the City and
Pitkin County Wildfire Hazard Assessment Maps.
A landscape design plan for projects in fire -prone areas shall address fire safety and
prevention.
ii. All landscape plantings for properties located in the Moderate or High Wildfire
Hazard zone of the City must be firewise (see Appendices C and D).
iii. Properties located outside of the City limits should consult with Pitkin County.
z See: Pitkin County Noxious List & Weed Management Plan http://pitkincounty.com/430/Noxious-Weed-
Information;
' See: City of Aspen Firewise Plant Materials recommendations:
http://www.aspenpitkin.com/Portals/0/docs/City/wildfire/FireWise%201nformation_Landscaping-
Plants%20(2).pdf
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f. The architectural guidelines of a common interest development, which include
community apartment projects, condominiums, planned developments, and stock
cooperatives, shall not include conditions that have the effect of prohibiting the use of
low-water use plants as a group.
5.4.2 Water Features
a. Recirculating water systems shall be used for water features.
b. Where available, recycled water is recommended as a source for decorative water
features.
c. The surface area of a water feature shall be included in the high water use hydrozone
area of the water budget calculation.
d. Pool and spa covers are highly recommended.
5.4.3 Stormwater Management
a. Stormwater management practices minimize runoff and increase infiltration which
recharges groundwater and improves water quality. Implementing stormwater best
management practices into the landscape and grading design plans to minimize runoff
and to increase on -site retention and infiltration are encouraged.
b. Project applicants shall refer to the City of Aspen for information on any applicable
stormwater ordinances and Stormwater management plans.
5.5 Landscape Plan
The landscape design plan, at a minimum, shall:
5.5.1 Delineate and label each hydrozone by number, letter, or other method.
5.5.2 Identify each hydrozone as low, moderate, or high water use. Temporarily irrigated areas of
the landscape shall be included in the low water use hydrozone for the water budget
calculation.
5.5.3 Identify recreational areas.
5.5.4 Identify areas permanently and solely dedicated to edible plants.
5.5.5 Identify areas irrigated with recycled water.
5.5.6 Identify type of mulch and application depth.
5.5.7 Identify soil amendments, type, and quantity.
I.
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5.5.8 Identify type and surface area of water features.
5.5.9 Identify hardscapes (pervious and non -pervious).
5.5.10 Identify location and installation details of any applicable stormwater best management
practices that encourage infiltration of stormwater. Stormwater best management practices
are encouraged in the landscape design plan and examples include, but are not limited to:
a. Infiltration beds, swales, and basins that allow water to collect and soak into the ground.
b. Constructed wetlands and retention ponds that retain water, handle excess flow, and
filter pollutants.
c. Pervious or porous surfaces (e.g., permeable pavers or blocks, pervious or porous
concrete, etc.) that minimize runoff.
5.5.11 Identify any applicable rain harvesting or catchment technologies (e.g., rain gardens,
cisterns, etc.).
5.5.12 Contain the following statement: "I have complied with the criteria of the Water Efficient
Landscaping Standards and applied them for the efficient use of water in the landscape
design plan".
5.5.13 The signature of a licensed landscape architect, or licensed/certified landscape contractor.
6. IRRIGATION SYSTEM CRITERIA
This section applies to landscaped areas requiring permanent irrigation. For the efficient use of water,
an irrigation system shall be planned and designed according to the most current version of the
Landscape Irrigation Best Management Practices, by the Irrigation Association and the American Society
of Irrigation Consultants.
6.1 Irrigation System Requirements
6.1.1 Backflow prevention devices shall be required to protect the potable water supply from
contamination by the irrigation system and comply with local plumbing codes.
6.1.2 Manual shut-off valves (such as a gate valve, ball valve, or butterfly valve) shall be required,
as close as possible to the point of connection of the water supply and to isolate sections of
mainline on larger systems, to minimize water loss in case of an emergency (such as a main
line break) or routine repair.
6.1.3 Master shut-off valves (lockable) and flow sensors, integrated with the automatic irrigation
controller are required on all projects.
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a. City of Aspen staff reserve the right to operate this valve when the City has declared a
water shortage under the City's Water Shortage Ordinance or when more than fifty
percent (50%) of the account usage occurs in water rate tier four (4).
6.1.4 Dedicated landscape water meters/sub-meters shall be installed for all non-residential
irrigated landscapes of 5,000 square feet or more.
6.1.5 Smart irrigation controllers labeled by U.S. Environmental Protection Agency's WaterSense
Program or with published reports posted on the Smart Water Application Technologies
website are recommended for residential projects and required for all non-residential
projects. If a flow meter is used, then the controller shall be able to use inputs from the flow
meter/sensor to control irrigation if flows are abnormal.
6.1.6 Sensors (e.g., rain, freeze, wind, and/or soil moisture etc.), either integral or auxiliary, that
suspend or alter irrigation operation during unfavorable weather conditions or when
sufficient soil moisture is present shall be required on all irrigation systems.
6.1.7 The irrigation system shall be designed to prevent runoff, low head drainage, overspray, or
other similar conditions where irrigation water flows onto non -targeted areas, such as
adjacent property, non -irrigated areas, hardscapes, roadways, or structures. Restrictions
regarding overspray and runoff may be modified if the landscape area is adjacent to
permeable surfacing and no runoff occurs or if the adjacent non -permeable surfaces are
designed and constructed to drain entirely to landscaping.
6.1.8 Minimum pop-up height for sprinklers in turfgrass areas shall be six inches (6")
6.1.9 Check valves or anti -drain valves are required on all sprinkler heads.
6.1.10 The irrigation system shall be designed to ensure that the operating pressure at each
emission device is within the manufacturer's recommended pressure range for optimal
performance.
a. To control excessive pressure above the required operating pressure of the irrigation
system emission devices, pressure -regulating devices such as valve pressure regulators,
sprinkler head pressure regulators, inline pressure regulators, or other devices shall be
installed to meet the required operating pressure of the emission devices.
b. If water pressure is below the required operating pressure of the emission devices, then
a booster pump shall be installed so that emission devices shall operate at the
manufacturer's recommended pressure.
c. The pressure and flow measurements shall be identified at the design stage and verified
prior to the installation of the system.
6.1.11 All irrigation emission devices shall meet the requirements set in the American National
Standards Institute (ANSI) standard, ASABE/ICC 802-2014 "Landscape Irrigation Sprinkler
City of Aspen Water Efficient Landscaping Standards Page 18 of 24
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and Emitter Standard" authored by the American Society of Agricultural and Biological
Engineers and the International Code Council and verified by an independent third -party.
6.1.12 The design of the irrigation system shall conform to the hydrozones of the landscape design
plan.
6.1.13 Sprinklers within a zone shall have matched precipitation rates, unless otherwise directed by
the manufacturer's recommendations.
6.1.14 Sprinkler spacing shall be designed to achieve the highest possible distribution uniformity
using the manufacturer's recommendations. Spacing must achieve head -to -head coverage.
All sprinkler heads installed in the turfgrass areas shall have a distribution uniformity of 0.65
or higher using the protocol defined in ASABE/ICC 802-2014 standard.
6.1.15 The irrigation system must be designed and installed to meet, at a minimum, any water
windows or restrictions for operation such as day of the week and hours of the day.
6.2 Hydrozone Requirements
6.2.1 Each remote control valve shall irrigate a hydrozone with similar microclimate, soil
conditions, slope, and plant materials with similar water demand.
6.2.2 Relevant soils information such as soil type and infiltration rate shall be utilized when
designing irrigation systems.
6.2.3 Narrow or irregularly shaped areas, including turfgrass areas, less than ten feet (10 ft) in
dimension in any direction shall not utilize overhead sprinkler irrigation.
6.2.4 Slopes greater than twenty-five percent (25%) shall not use sprinklers with an application
rate exceeding 0.75 inches per hour. Exception: If the irrigation designer specifies an
alternative design or technology and clearly demonstrates no runoff or erosion will occur.
Prevention of runoff and erosion shall be confirmed during the irrigation audit.
6.2.5 Sprinkler heads and other emission devices shall be selected based on what is appropriate
for the plants and soil type within that hydrozone. Individual hydrozones that mix high and
low water use plants shall not be permitted.
6.2.6 In mulched planting areas, the use of low flow irrigation is required for any vegetation that
will exceed twelve inches (12") mature height.
6.2.7 Where feasible, trees shall be placed on separate valves from shrubs, groundcovers, and
turfgrass to facilitate the appropriate irrigation of trees. The mature size and extent of the
root zone shall be considered when designing irrigation for the tree.
6.2.8 Hydrozone areas shall be designated by number, letter, or other designation on the
landscape design plan and irrigation design plan. On the irrigation design plan, designate the
areas irrigated by each valve, and assign a number to each valve. Use this valve designation
City of Aspen Water Efficient Landscaping Standards Page 19 of 24
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FOR DISCUSSION PURPOSES ONLY
in the Hydrozone Information Table (see Appendix A). This table can also assist with the
irrigation audit and programming the controller.
6.2.9 Source water, such as non -potable water should be considered.
6.3 Irrigation Design Plan
An irrigation design plan meeting the following design criteria shall be submitted for review and
approval by the City of Aspen.
6.3.1 Plan Requirements
The irrigation design plan, at a minimum, shall contain:
a. A scaled plan showing property lines, easements, existing or proposed structures,
impervious surfaces, and existing natural features.
b. Location and size of the point of connection to the water supply and meter locations
along with static water pressure at the point of connection to the water supply and
dynamic water pressure for proper system operation.
c. Reclaimed/recycled water or alternative water sources such as graywater shall comply
with local plumbing codes including marking of pipes and system components.
d. Location, type and size of all components of the irrigation system, including backflow
preventer, flow sensor, master valve, smart irrigation controllers, main and lateral lines,
manual valves, remote control valves, sprinkler heads, moisture sensing devices, rain
switches, on -site weather monitoring sensors, quick couplers, pressure regulators.
e. An irrigation legend showing the identification of irrigation components.
f. Flow rate (gallons per minute), application rate (inches per hour), and design operating
pressure (pressure per square inch) for each irrigation zone.
g. Installation details for each of the irrigation components.
h. Designer statements and signature:
The following statement: "I have complied with the criteria of the Water Efficient
Landscaping Standards and applied them accordingly for the efficient use of water
in the irrigation design plan."
The signature of a qualified irrigation professional such as licensed landscape
architect with irrigation credentials, certified irrigation designer, or
licensed/certified landscape contractor.
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6.5 Landscape Irrigation Audit
6.5.1 All landscape irrigation audits shall be conducted by a third party certified landscape
irrigation auditor. Irrigation audits shall not be conducted by the person or company who
installed the irrigation system.
6.5.2 The project applicant shall submit an irrigation audit report with the Approval Letter request
to the City of Aspen. The irrigation audit report shall include, but is not limited to:
inspection; system tune-up; system test with distribution uniformity; reporting overspray or
run off that causes overland flow; and preparation of an irrigation schedule, including
configuring irrigation controllers with application rate, soil types, plant factors, slope,
exposure and any other factors necessary for accurate programming.
6.5.3 The City of Aspen may administer programs that include, but not be limited to, irrigation
water use analysis, irrigation audits, and irrigation surveys for compliance with the
Maximum Applied Water Budget.
6.6 Approval Letter
6.6.1 Proper installation and management of the irrigation system shall conform to the approved
irrigation design plan.
6.6.2 The Approval Letter request shall include the following six (6) elements:
a. Project information sheet that contains:
i. Date.
ii. Project name.
iii. Project address and location.
iv. Project applicant name, telephone, and mailing address.
v. Property owner name, telephone, and mailing address.
b. Certification by the irrigation designer and the licensed landscape/irrigation contractor
that the irrigation system has been installed per the approved irrigation design plan.
C. Record drawings (as-builts), provided in electronic format, showing all changes from the
approved plan shall be included with the certification.
d. A diagram of the irrigation system showing hydrozones and the irrigation scheduling
parameters used to set the controller shall be kept with the irrigation controller for
subsequent management purposes.
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FOR DISCUSSION PURPOSES ONLY
e. Irrigation system maintenance schedule.
f. Irrigation audit report.
6.6.3 The project applicant shall:
a. Submit the signed Approval Letter to the City of Aspen for review.
b. Ensure that copies of the Approval Letter are submitted to the City of Aspen and
property owner or his or her designee.
6.6.4 The City of Aspen shall:
a. Receive the signed Approval Letter from the project applicant.
b. Approve or deny the Approval Letter. If the Approval Letter is denied, the City of Aspen
shall provide information to the project applicant regarding reapplication, appeal, or
other assistance.
6.7 Irrigation System Maintenance Schedule
6.7.1 Irrigation systems shall be maintained to ensure proper operation and function for water
use efficiency. A regular maintenance schedule shall be submitted with the Approval Letter.
6.7.2 A regular maintenance schedule shall include, but not be limited to, routine inspection,
auditing, adjustment and repair of the irrigation system and its components. Operation of
the irrigation system outside the normal watering window is allowed for auditing and
system maintenance.
6.7.3 Repair of all irrigation equipment shall be done with the originally installed components. If
equipment components with greater efficiency are used in replacement, the entire zone
must be changed to maintain consistency.
6.7.4 Project applicants are encouraged to implement sustainable or environmentally -friendly
practices for overall landscape maintenance.
6.8 Irrigation Scheduling
For the efficient use of water, all irrigation schedules shall be developed, managed, and evaluated to
utilize the minimum amount of water required to maintain plant health. Irrigation schedules shall
meet the following criteria:
6.8.1 Irrigation scheduling shall be regulated by smart irrigation controllers that utilize
evapotranspiration data or soil moisture data.
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6.8.2 Overhead irrigation shall be scheduled between 6:00 p.m. and 8:00 a.m. unless weather
conditions prevent it or an alternate schedule is declared under the City's Water Shortage
Ordinance'. Operation of the irrigation system outside the normal watering window is
allowed for auditing and system maintenance.
6.8.3 Parameters used to set the automatic controller shall be developed and submitted for each
of the following:
a. The plant establishment period.
b. The established landscape.
c. Temporarily irrigated areas.
6.8.4 Each irrigation schedule shall consider, for each station, all of the following that apply.
a. Irrigation interval (days between irrigation).
b. Irrigation run times (hours or minutes per irrigation event to avoid runoff).
c. Number of cycle starts required for each irrigation event to avoid runoff.
d. Amount of applied water scheduled to be applied on a monthly basis.
e. Application rate setting.
f. Root depth setting.
g. Plant type setting.
h. Soil type.
i. Slope factor setting.
j. Shade factor setting.
k. Irrigation uniformity or efficiency setting, based on audit information.
6.9 Irrigation Management
6.9.1 Irrigation management includes planning water use, monitoring water use, and verifying
that equipment is maintained and properly adjusted for optimal performance.
'See: City Municipal Code Sec. 25.28.010.
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FOR DISCUSSION PURPOSES ONLY
6.9.2 As the landscape matures, adjustments to the system should be in harmony with the
original intent of the irrigation design.
6.9.3 Scheduling of irrigation events should match the needs of the plants to maintain health,
appearance and meet the function of the landscape.
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1.
APPENDIX A — WATER EFFICIENT LANDSCAPE WORKSHEET
This worksheet is completed by the project applicant and is a required element of the Landscape and
Irrigation Documentation Package.
SECTION A. GALLONS OF WATER NEEDED BY PLANT CATEGORY AND IRRIGATION TYPE
The specific irrigation water needs of each hydrozone in the design should be determined using the
following formula and factors:
Irrigation Water Budget = [(ETo x Plant Factor) — Re] x Irrigated Area _ Irrigation Efficiency x 0.623
Where:
ETo = Reference Evapotranspiration = 27.4 inches/season (May through September)
Re = Effective Precipitation = 6.8 inches/season (May through September)
Irrigated Area = hydrozone area in square feet
Water Use
Plant
Category
Factor
Cool -Season Turf
0.90
High
0.80
Medium
0.65
Low
0.40
Very Low
0.25
Irrigation
Default
Method
Efficiency
Overhead
75%
Drip
90%
SECTION B. HYDROZONE INFORMATION TABLE AND WATER BUDGET CALCULATION
Complete the hydrozone table for each hydrozone. Use as many rows as necessary to provide the square
footage of landscape area per hydrozone.
Hydro -
zone
ETo
(in/season)
Plant
Water Use
Category
Plant
Factor
Re
(in/season)
Irrigation
Method
Irrigation
Efficiency
TOTAL
Hydrozone
Area
(sq-ft)
Irrig Water
Need
(gal/season)
AVERAGE IRRIGATION WATER NEED ALL ZONES*: gal/sf/season
*The average must be less than the Maximum Applied Water Budget of 7.5 gal/sf/season.
Total area of irrigated public right-of-way: sq-ft
Total area of non -irrigated landscape: sq-ft
City of Aspen Water Efficient Landscaping Standards
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P31
I.
An example is provided below.
Example Hydrozone Information Table and Water Budget Calculation:
Hydro-
ETo
zone
(in/season)
Zone 1
27.4
Zone 2
27.4
Zone 3
27.4
Zone 4
27.4
Plant
Hydrozone
Irrig Water
Water Use
Plant
Re
Irrigation
Irrigation
Area
Need
Category
Factor
(in/season)
Method
Efficiency
(sq-ft)
(gal/season)
L
0.40
6.8
Drip
0.90
I 2000
5759
M
0.65
6.8
Overhead
0.75
I 500
4573
Turf
0.90
6.8
Overhead
0.75
I 2000
29671
VL
0.25
6.8
Drip
0.90
I 1000
35
TOTAL
I 5500
40038
AVERAGE IRRIGATION WATER NEED ALL ZONES*: 7.3 gal/sf/season
Total area of irrigated public right-of-way: 0 sq-ft
Total area of non -irrigated landscape: 300 sq-ft
City of Aspen Water Efficient Landscaping Standards Page A-2
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I.
APPENDIX B — GREENCO PLANT LIST
The Plant Water Use Category (VL = Very Low, L = Low; M = Medium; H = High) used to calculate the
Irrigation Water Budget in Appendix A should be selected from the plant list provided in the "Green
Industry Best Management Practices (BMPs) for the Conservation and Protection of Water Resources in
Colorado: Moving Toward Sustainability" Appendix E, Third Release, May 2008. GreenCO's Appendix E
plant list categorizes plant water needs for various regions of Colorado based on elevation, including the
East Slope (<6,500 ft), West Slope (6,500 to 8,500 ft), and Mountain Areas (>8,500 ft). Accordingly,
Aspen is located in the "West Slope" category. Relevant pages from the GreenCO Appendix E are
included below. Applicant shall provide references for the Plant Water Use Category for any plant that is
not included in this plant list.
City of Aspen Water Efficient Landscaping Standards
Page B-1
P33
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
s balsamea'Nana'
s concolor
t fraseri
koreana'Horstmann's Silberlocke'
s lasiocarpa
campestre
ginnala
glabrum
grandidentatum
griseum
japonicum 'Aconitifolium'
miyabei
negundo
nigrum'Greencolumn'
palmatum
platanoides
pseudoplatanus
rubrum
saccharinum
saccharum
x freemanii
lea'Coronation Gold'
lea'Moonshine'
lea'Summer Pastels'
lea ageratifolia
lea filipendulina
lea lanulosa
lea millefolium
lea ptarmica'The Pearl'
lea serbica
lea tomentosa
itum columbianum
itum napellus
itum x cammarum
idia arguta
idia kolomikta
itum pedatum
,podium podograria
ulus glabra
ulus hippocastanum
ulus octandra
ulus parviflora
ulus x camea
onema coridifolium
onema grandiflorum
,anthus africanus
tache'Blue Fortune'
tache aurantiaca'Coronado'
Cache barberi
tache cana
tache foeniculum
tache rupestris
atum houstonianum
pyron cristatum
stis palustris
a pacifica
a genevensis'Pink Beauty'
a pyramidalis'Metallica Crispa'
a reptans
is quinata
i rosea
;milla alpine
;milla erythropoda
;milla mollis
n cernuum
n geyeri
n schoenoprasum
a glutinosa
s rubra
tenuifolia
;um montanum'Mountain Gold'
;um sp.
,anthus spp.
anchier alnifolia
anchier canadensis
anchier laevis
anchier lamarckii
anchier stolonifera
anchier utahensis
anchier x grandiflora
,pha canescens
Common Name
Fir, Dwarf Globe Balsam
Fir, White
Fir, Fraser
Fir, Silver Korean
Fir, Subalpine
Maple, Hedge
Maple, Amur
Maple, Rocky Mountain
Maple, Bigtooth
Maple, Paperbark
Maple, Cutleaf Fullmoon
Maple, Miyabi
Box Elder
Maple, Greencolumn Black
Maple, Japanese
Maple, Norway
Maple, Sycamore
Maple, Red
Maple, Silver
Maple, Sugar
Maple, Tatarian
Maple, Shantung
Maple, Freeman
Yarrow, Golden Yellow
Yarrow, Moonshine
Yarrow, Mixed Pastels
Yarrow, Greek
Yarrow, Tall Yellow
Yarrow, Wooly White
Yarrow, Common White
Yarrow, The Pearl
Yarrow, Serbian
Yarrow, Wooly Yellow
Monkshood, Columbian
Monkshood, Garden
Monkshood, Bicolor
Kiwi, Hardy
Kiwi, Variegated
Fern, Western Maidenhair
Bishop's Weed
Buckeye, Ohio
Horsechestnut
Buckeye, Yellow
Buckeye, Bottlebrush
Horsechestnut, Red
Stonecress, Lebanon
Stonecress, Persian
Lily of the Nile
Hyssop, Blue Fortune Anise
Hyssop, Coronado
Giant Hummingbird's Mint
Double Bubblemint
Hyssop, Anise
Hyssop, Sunset
Crested Wheatgrass
Bentgrass
Daisy, Pacific
Carpet Bugle, Pink Beauty
Carpet Bugle, Pyramid
Carpet Bugle, Green
Chocolate Vine
Hollyhock
Lady's Mantle, Alpine
Lady's Mantle, Red
Lady's Mantle
Nodding Onion
Geyer Onion
Chives
Alder, Black
Alder, Red
Alder, Thinleaf
Basket of Gold, Mountain
Serviceberry, Saskatoon
Serviceberry, Shadblow
Serviceberry, Allegheny
Serviceberry, Lamarck
Serviceberry, Running
Serviceberry, Utah
Serviceberry, Apple
Leadplant
Plant Type
East
Slope
East Slope Votes
West
Slope
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
S
M
10
M
10
T
M
17
M
3
M
2
M
22
T
M
43
M
10
M
12
M
65
T
M
16
M
4
M
4
M
24
T
M
7
M
3
M
3
M
13
T
M
19
M
7
M
9
M
35
T
M
24
L
7
M
5
M
36
S T
L
45
L
9
L
10
L
64
S
L
29
L
4
L
8
L
41
S T
L
39
L
8
L
6
L
53
T
M
19
M
4
M
3
M
26
S
H
8
L
2
M
1
M
11
T
M
11
M
3
L
2
M
16
T
L
34
M
9
L
4
L
47
T
M
9
M
2
M
1
M
12
T
M
25
H
3
H
2
H
30
T
M
36
M
5
M
3
M
44
T
M
14
M
2
M
1
M
17
T
M
35
M
5
M
3
M
43
T
M
40
M
6
M
3
M
49
T
M
28
M
4
M
3
M
35
S T
L
38
L
9
L
7
L
54
T
M
8
M
2
M
1
M
11
T
M
27
M
5
M
4
M
36
P
L
31
L
6
L
4
L
41
P
L
31
L
7
L
5
L
43
P
L
28
L
6
L
5
L
39
P
L
25
L
5
L
3
L
33
P
L
25
L
6
VL
5
L
36
P
L
21
L
4
L
3
L
28
P
L
30
L
7
L
7
L
44
P
L
21
L
4
L
3
L
28
P
L
21
L
4
L
1
L
26
P
L
24
L
5
L
3
L
32
P
H
11
M
1
H
1
H
13
P
M
19
H
3
H
2
H
24
P
M
11
M
11
P
M
8
M
8
V
M
10
M
10
P
H
11
H
2
H
13
GCP
M
26
M
4
M
3
M
33
T
M
37
M
5
M
3
M
45
T
M
33
M
3
H
2
M
38
T
M
19
M
3
L
2
M
24
S
M
14
M
2
H
2
M
18
T
M
23
M
3
M
3
M
29
P
L
9
M
3
M
1
L
13
P
L
11
L
3
L
14
A
M
14
M
1
M
15
P
L
21
L
3
L
1
L
25
P
L
30
L
3
L
1
L
34
P
L
20
L
3
L
1
L
24
P
L
28
L
4
L
1
L
33
P
L
18
L
2
L
1
L
21
P
L
31
L
4
L
2
L
37
A
M
18
L
3
M
4
M
25
TU
L
20
L
3
L
2
L
25
TU
H
10
H
1
H
11
P
L
6
L
1
L
1
L
8
GC
M
19
M
3
L
2
M
24
GC
M
19
M
2
M
21
GC
M
26
M
2
M
2
M
30
V
M
7
M
7
P
L
32
L
4
L
3
L
39
P
M
12
L
1
L
1
M
14
P
M
9
M
2
M
11
P
M
24
M
2
L
1
M
27
P
L
17
L
1
L
2
L
20
P
L
10
L
1
M
1
L
12
P
L
25
M
1
M
1
L
27
ST
H
28
M
7
M
6
M
41
S
H
9
H
2
H
2
H
13
S T
M
37
M
8
M
9
M
54
P
L
27
L
5
L
3
L
35
A
M
23
L
2
L
4
M
29
A
L
15
M
2
L
2
L
19
S
L
32
L
9
L
8
L
49
S T
L
39
L
9
L
9
L
57
S T
M
28
L
4
L
4
L
36
S T
L
20
L
5
L
5
L
30
S
L
14
L
4
L
5
L
23
S
L
18
L
5
L
5
L
28
S T
M
27
L
6
L
5
L
38
S
VL
31
VL
6
VL
1
VL
38
GreenCO BMP Manual
Third Release, May 2008 Page 1 of 16 Appendix E
City of Aspen Water Efficient Landscaping Standards Page B-2
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
P34
1.
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Name
na nana
)psis brevipendunculata
pia jonesii
;lus pyrethrum var. depressus
alis margaritacea
>a spp.
rogon gerardii
rogon saccharoides
one biarmiensis
one canadensis
one cylindrica
one multifida
one sylvestris
one tomentosa'Robustissima'
one x hybrida
,nia spp.
aria dioica'Rubra'
iaria parvifolia
nis marschalliana
nis tinctoria
inum majus
Zia alpina
7ia barnebyi
7ia caerulea
7ia canadensis
Zia chrysantha
7ia cultivars
7ia discolor
7ia elegantula
7ia flabellata 'Kurilensis'
7ia formosa
7ia saximontana
7ia vulgaris
blepharophylla'Spring Charm'
caucasica 'Snowcap'
:aphylos nevadensis
:aphylos patula
:aphylos uva-ursi
is montana
lochia durior
,ia'Victor Reiter'
,ia maritima
Ia pseudarmeria
i cordifolia
a arbutifolia'Brilliantissima'
a melanocarpa
a x prunifolia
iisia'Powis Castle'
iisia abrotanum
iisia absinthium
iisia cane
iisia filifolia
iisia frigida
iisia ludoviciana
iisia schmidtiana
iisia stellerana'Silver Brocade'
iisia tridentata
iisia tripartite
us dioicus
to donax
pias incarnata
pias speciosa
pias tuberosa
'Wood's Purple'
alpinus
bigelovii
laevis
novae-angliae
novi-belgii
ported
tongolensis'Wartburg Star'
x frikartii 'Monch'
e chinensis
e x arendsii
e x japonica
e x simplicifolia'
e x thunbergii
itia carniolica
itia major
um filix-femina
um nipponicum'Pictum'
m canescens
Common Name I Plant
East I I West
East Slope Votes
False Indigo
S
L
25
Fragrant False Indigo
S
VL
20
Porcelain Berry Vine
V
M
16
Jones' Bluestar
P
L
12
Daisy, Mt. Atlas
P
L
21
Pearly Everlasting
P
L
12
Bugloss
A P
M
17
Bluestem, Big
P
L
23
Bluestem, Silver
P
L
15
Anemone, Yellow
P
M
10
Anemone, Meadow
P
M
15
Thimbleweed
P
M
10
Windflower
P
M
15
Anemone, Snowdrop
P
M
19
Anemone, Grape -leaved
P
M
16
Anemone, Hybrid
P
M
18
Summer Snapdragon
A
M
9
Pussytoes, Pink
P
L
25
Pussytoes, Dwarf
P
L
24
Daisy, Filigree
P
L
8
Daisy, Marguerite
P
L
18
Snapdragon
A
M
19
Columbine, Alpine
P
M
24
Columbine, Barneby's
P
L
15
Columbine, Rocky Mountain
P
M
36
Columbine, Dwarf Red
P
M
22
Columbine, Yellow
P
L
32
Columbine
P
M
27
Columbine, Spanish
P
M
11
Columbine, Dwarf Red
P
M
18
Columbine, Compact Pink
P
M
15
Columbine, Western Red
P
M
15
Columbine, Dwarf Blue
P
M
21
Columbine, Garden
P
M
21
Rockcress, Spring Charm
P
M
13
Rockcress, White Alpine
P
L
19
Bearberry, Nevada
GCP S
L
26
Manzanita, Greenleaf
S
L
17
Kinnikinnick
GCP S
L
36
Sandwort, Mountain
P
L
14
Marguerite Daisy
A
M
14
Dutchman's Pipe
V
M
13
Sea Pinks, Victor Reiter
P
M
12
Sea Pinks
P
M
24
Sea Pinks, Wide -leaved
P
M
10
Arnica, Heartleaf
P
M
7
Chokeberry, Brilliant Red
S
M
24
Chokeberry, Black
S
L
29
Chokeberry, Purple
S
L
17
Sage, Powis Castle
P
L
22
Sage, Southemwood
S
L
16
Sage, Common Wormwood
P
VL
11
Sagebrush, Silver
S
VL
26
Sagebrush, Sand
S
VL
25
Sage, Fringed
P S
VL
34
Sagewort, Prairie
S
VL
19
Sage, Silver Mound
P
L
25
Sage, Silver Brocade
P
L
18
Sagebrush, Tall Western
S
VL
32
Sagebrush, Three Parted
S
VL
18
Goats Beard
P
M
13
Grass, Giant Reed
P
M
10
Milkweed, Swamp
P
M
17
Milkweed, Showy
P
L
14
Gay Butterfly
P
L
23
Aster, Wood's Purple
P
M
12
Aster, Alpine
P
L
22
Aster, Plains
P
L
14
Aster, Smooth
P
L
11
Aster, New England
P
M
21
Aster, Dwarf Fall
P
M
26
Aster, Porter
P
L
11
Aster, Purple
P
M
15
Aster, Monch Frikart's
P
M
22
False Spirea, Chinese
P
H
17
False Spirea
P
H
16
False Spirea
P
H
15
False Spirea, Star
P
H
11
False Spirea
P
H
10
Mastenvort, Giant
P
M
5
Masterwort
P
M
8
Fern, Lady
P
H
12
Fern, Japanese Painted
P
H
14
Saltbush, Four Wing
S
VL
26
VL
M
M
L
L
L
L
L
M
M
M
M
L
M
M
VL
VL
L
L
L
M
L
M
M
M
M
M
M
M
M
M
M
L
L
L
L
L
L
Slope
Votes
5
3
1
2
3
3
2
3
1
3
3
3
3
2
2
2
3
5
1
2
4
5
4
8
6
7
5
3
3
4
4
4
3
3
4
5
3
8
3
2
3
2
2
4
5
2
6
3
2
5
6
8
5
3
4
9
3
1
1
1
2
5
3
4
2
2
3
5
1
2
3
3
3
3
1
2
1
1
1
1
7
Mountain
L
VL
M
L
L
L
L
L
L
M
M
M
M
M
VL
VL
L
M
L
M
M
L
L
M
M
M
M
M
M
M
L
L
L
VL
L
L
M
L
L
L
L
L
VL
VL
VL
VL
VL
VL
VL
VL
VL
VL
H
L
L
M
L
M
L
M
VL
H
M
VL
Mountain) All Total
Votes Reqions Votes
1
3
1
1
1
2
1
1
3
1
1
1
1
4
4
2
8
4
4
6
2
3
2
2
3
4
2
2
2
1
9
2
1
2
3
3
2
3
3
1
6
6
8
6
2
2
9
3
25
17
14
25
18
20
27
17
15
19
14
21
22
19
21
9
32
34
9
21
27
33
21
52
32
43
38
16
24
21
21
28
28
18
25
33
21
53
19
15
13
15
28
12
11
31
37
21
31
22
14
37
37
50
30
30
24
50
24
14
11
19
18
29
17
27
17
15
26
32
12
17
26
21
20
19
13
13
6
9
14
16
37
GreenCO BMP Manual
Third Release, May 2008 Page 2 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-3
P35
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Name
�x corrugate
:x gardemi
:ta deltoidea'Purple Gem'
eta x cultorum
a saxatilis'Gold Ball'
aris glutinosa
saris pilularis
,a spp.
a multiradiata
is australis
iia semperflorens
icanda chinensis
perennis
n minutum
ris koreana
ris thunbergii
ris x'Tara'
ris x gladwynensis'William Penn'
ris x mentorensis
nia cordifolia
idiera lyrata
i'Crimson Frost
i fontinalis /occidentalis
i jacquemontii
i maximowicziana
i nigra
i papyrifera
i pendula
i platyphylla
i x'Rocky Mountain Splendor
iia asteroides
loua curdpendula
loua gracilis
ycome iberidifolia
ica oleracea
is inermis
Ilia speciosa
era macrophylla
)e dactyloides
sja alternifolia
eja davidii
sja x weyeriana
microphylla
sempervirens
iagrostis acutiflora
iagrostis brachytricha
drinia umbellata'Ruby Tuesday'
dula officinalis
3rpa japonica
ioe alcaeoides'Logan Calhoun'
ioe involucrata
adrus decurrens
hortus gunnisonii
tleptosepala
i palustris
anthus floridus
phus hartwegii fendleri
phus serrulatus
anula carpatica
anula cochleariifolia
anula garganica
anula glomerata
anula lactiflora
anula medium
anula persicifolia
anula portenschlagiana
anula poscharskyana
anula punctata'Cherry Bells'
anula rotundifolia
sis radicans
sis x tagliabuana
r x generalis
ana arborescens
ana frutex
ana maximowicziana
are microphylla
ana pygmaea
aquatilis
buchananii
comans
conica
elata
flacca
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Saltbush, Spiny
S
VL
18
VL
3
VL
2
VL
23
Saltbush, Mat
S
VL
14
VL
4
VL
2
VL
20
Saltbush, Gardner's
S
VL
9
VL
3
VL
2
VL
14
Rockcress, Purple
P
L
18
L
2
L
1
L
21
Rockcress, Hybrid
P
L
11
M
1
L
12
Basket -of -Gold Alyssum
P
L
27
L
5
L
3
L
35
Seep -Willow
S
L
5
H
1
H
1
M
7
Coyote Brush
S
L
5
H
1
H
1
M
7
Water Hyssop
A
M
10
M
2
M
12
Desert Marigold
P
VL
8
L
2
L
1
VL
11
False Indigo
P
L
21
L
3
L
2
L
26
Wax Begonia
A
H
17
H
2
H
19
Lily, Blackberry
P
L
14
M
1
L
15
Daisy, English
A P
M
10
M
1
M
11
Daisy, Miniature Mat
P
M
10
M
10
Barberry, Korean
S
L
25
L
3
L
2
L
30
Barberry, Japanese
S
L
36
L
4
L
4
L
44
Barberry, Emerald Carousel
S
L
18
L
3
L
2
L
23
Barberry, William Penn
S
M
14
L
2
M
3
M
19
Barberry, Mentor
S
L
26
L
3
L
2
L
31
Bergenia, Heart -Leaved
P
M
21
L
2
M
23
Chocolate Flower
P
L
20
VL
3
L
1
L
24
Birch, Crimson Frost
S T
H
25
H
4
M
4
H
33
Birch, Native River
S T
H
34
M
6
M
6
M
46
Birch, Himalayan White
S T
H
21
M
3
M
3
H
27
Birch, Monarch Clump
T
H
12
H
1
H
1
H
14
Birch, River
T
H
37
H
4
M
3
H
44
Birch, Paper
T
H
35
H
3
M
3
H
41
Birch, Weeping
T
H
31
H
3
M
3
H
37
Birch, White
T
H
22
H
2
H
2
H
26
Birch, Rocky Mt Splendor
T
M
15
M
2
H
3
M
20
Boltonia
P
M
18
L
2
L
1
M
21
Grass, Side Oats Grama
P
L
15
L
6
L
3
L
24
Grass, Blue Grama
P TU
VL
25
VL
5
VL
4
VL
34
Daisy, Swan River
A
M
11
M
2
M
13
Ornamental Cabbage or Kale
A
M
14
M
3
M
17
Smooth Brome
TU
L
10
VL
1
M
3
L
14
Bush Violet
A
M
11
H
1
M
12
False Forget -Me -Not
P
M
20
L
2
M
1
M
23
Buffalograss
TU
VL
28
VL
4
VL
2
VL
34
Butterfly Bush, Alternate
S
L
30
L
5
L
2
L
37
Butterfly Bush
S
M
38
L
4
L
2
M
44
Butterfly Bush, Yellow
S
M
12
L
1
L
1
L
14
Boxwood, Littleleaf
S
M
23
M
2
M
1
M
26
Boxwood, Common
S
M
23
M
3
M
2
M
28
Grass, Feather Reed
P
L
27
M
6
M
1
L
34
Grass, Korean Feather Reed
P
L
11
M
3
M
1
L
15
Rock Purslane
P
L
6
L
6
Calendula
A
M
19
M
1
L
2
M
22
Beautyberry, Japanese
S
M
11
M
2
M
2
M
15
Prairie Winecups, White
P
L
14
L
1
L
15
Prairie Winecups
P
L
30
VL
5
L
1
L
36
Cedar, Incense
T
M
7
L
2
L
2
M
11
Mariposa Lily
P
VL
9
VL
1
L
2
L
12
Marsh Marigold, White
P
H
7
H
2
H
2
H
11
Marsh Marigold, Yellow
P
H
8
H
2
H
1
H
11
Carolina Allspice
S
H
4
H
1
H
1
H
6
Sundrops, Fendler's
P
L
18
VL
6
L
1
L
25
Shrubby Evening Primrose
P
L
4
L
4
Harebell, Carpathian
P
M
19
M
3
M
1
M
23
Bluebells, Little
P
M
15
M
3
M
1
M
19
Bellflower, Greek
P
M
14
M
3
M
1
M
18
Bellflower, Clustered
P
M
21
M
3
M
1
M
25
Bellflower, Milky
P
M
10
L
2
M
12
Canterbury Bells
A P
M
16
M
3
H
2
M
21
Bellflower, Peach -Leaved
P
M
22
M
3
M
1
M
26
Bellflower, Dalmatian
P
M
16
L
2
M
1
M
19
Blue Bells, Adriatic
P
M
18
L
2
M
1
M
21
Bellflower, Cherry Bells
P
M
11
L
1
M
12
Harebell, Blue Native
P
L
27
L
5
L
3
L
35
Trumpet Vine
P V
L
23
L
23
Trumpet Vine
P V
L
13
L
13
Canna
A
H
19
H
1
H
1
H
21
Peashrub, Siberian
S
L
33
VL
8
L
7
L
48
Peashrub, Russian
S
L
19
VL
4
L
2
L
25
Peashrub, Maximowics
S
VL
12
L
2
L
1
VL
15
Peashrub, Littleleaf
S
VL
12
VL
3
L
1
VL
16
Peashrub, Pygmy
S
L
22
VL
6
VL
3
L
31
Sedge, Water
P
H
8
H
2
H
1
H
11
Sedge, Leatherleaf
P
M
12
M
2
M
14
Sedge, New Zealand Hair
A
M
4
M
4
Sedge, Dwarf
P
M
4
M
1
M
5
Sedge, Tufted
P
M
5
M
1
H
1
M
7
Sedge, Blue Green
P
M
5
M
5
GreenCO BMP Manual
Third Release, May 2008 Page 3 of 16 Appendix E
City of Aspen Water Efficient Landscaping Standards Page B-4
P36
Appendix E
' Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Common Name
Plant Type
East
Slope
East Slope Votes
West
Slope
West
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Carex flagelifera
Sedge, Copperleaf
P
M
4
H
1
M
5
Carex glauca
Sedge, Blue
P
M
4
M
1
M
5
Carex lanuginosa
Sedge, Hairy
P
H
5
H
2
H
1
H
8
Carex morrowii
Sedge,Japanese
P
M
7
H
1
M
8
Carex muskingumensis
Sedge, Palm
P
M
4
H
1
M
5
Carex nebraskensis
Sedge, Nebraska
P
H
5
H
1
H
1
H
7
Carex rostrata
Sedge, Beaked
P
H
4
H
2
H
1
H
7
Carpinus betulus
Hornbeam, European
T
M
21
M
2
M
2
M
25
Carpinus caroliniana
Hornbeam, American
T
M
21
M
3
M
3
M
27
Carpinus japonica
Hornbeam, Japanese
T
M
5
M
1
M
1
M
7
Caryopteris incana
Spirea, Blue Mist
S
L
25
L
5
VL
3
L
33
Caryopteris x clandonensis
Spirea, Blue Mist
S
L
40
L
6
VL
5
L
51
Castilleja integra
Indian Paintbrush, Orange
P
L
20
VL
3
L
2
L
25
Castilleja linariaefolia
Indian Paintbrush, Wyoming
P
L
12
VL
1
L
2
L
15
Castilleja miniata
Indian Paintbrush, Scarlet
P
L
12
VL
1
M
1
L
14
Castilleja rhexifolia
Indian Paintbrush, Rose
P
L
10
VL
1
H
2
L
13
Catalpa ovata
Catalpa, Chinese
T
M
18
L
3
L
3
L
24
Catalpa speciosa
Catalpa, Western
T
L
44
L
6
L
3
L
53
Catananche caerulea
Cupid's Dart
P
L
14
L
1
L
15
Catharanthus roseus
Periwinkle, Madagascar
A
L
14
L
1
L
2
L
17
Ceanothus fendleri
Deerbrush
S
L
13
VL
4
L
5
L
22
Ceanothus gloriosus
Point Reyes Creeper
S
L
4
L
2
L
2
L
8
Ceanothus velutinus
Snowbrush
S
L
8
M
1
M
1
M
10
Cedrus deodora
Cedar, Deodar
T
M
11
M
3
L
2
L
16
Cedrus libani atlantica
Cedar, Blue Atlas
T
M
11
M
1
M
1
M
13
Celastrus scandens
American Bittersweet
S V
L
20
L
3
L
2
L
25
Celosia argentea plumosa
Cockscomb
A
M
19
M
1
L
2
M
22
Celtis laevigata
Sugarberry
T
L
8
L
2
L
2
L
12
Celtis occidentalis
Hackberry, Western
T
L
40
L
7
L
5
L
52
Celtis reticulata
Hackberry, Canyon
S T
L
22
L
4
L
4
L
30
Centaurea cyanus
Bachelor Button
A
L
25
L
3
L
3
L
31
Centaurea dealbata
Bachelor Button, Pink
P
L
15
L
1
L
1
L
17
Centaurea montana
Bachelor Button, Perennial
P
M
23
VL
1
M
1
L
25
Centranthus ruber
Valerian, Red
P
L
29
L
4
L
3
L
36
Cerastium alpinum lanatum
Wooly Cerastium
P
L
4
L
1
L
5
Cerastium arvense
Chickweed, Mouse -ear
P
L
9
L
1
L
1
L
11
Cerastium tomentosum
Snow -In -Summer
P
L
30
VL
4
VL
3
L
37
Ceratostigma plumbaginoides
Plumbago
P
L
21
M
1
L
22
Cercidiphyllum japonicum
Katsura Tree
T
M
11
H
2
H
2
M
15
Cercis canadensis
Redbud, Eastern
S T
M
42
M
7
L
4
M
53
Cercocarpus breviflorus
Mountain Mahogany, Little Flowe
S
VL
19
VL
5
VL
4
VL
28
Cercocarpus ledifolius
Mountain Mahogany, Curlleaf
S T
VL
40
VL
11
VL
7
VL
58
Cercocarpus montanus
Mountain Mahogany, Common
S T
VL
38
VL
11
VL
9
VL
58
Chaenomeles japonica
Quince, Japanese Flowering
S
M
28
L
4
L
3
L
35
Chaenomeles speciosa
Quince, Flowering
S
M
23
L
3
L
3
L
29
Chaenomeles x superba
Quince, Hybrid Flowering
S
L
15
L
1
L
1
L
17
Chamaebatiaria millefolium
Fembush
S
VL
25
VL
4
VL
4
VL
33
Chamaecyparis obtusa
Cypress, Hinoki
S
M
13
M
1
M
1
M
15
Chamaecyparis pisifera
Cypress, Japanese False
T
M
10
L
2
L
2
M
14
Chamaemelum nobile
Chamomile
P
L
8
L
1
M
1
L
10
Chamerion angustifolium
Fireweed
P
L
9
L
1
L
3
L
13
Chasmanthium latifolium
Sea Oats, Northern
P
M
16
M
1
M
17
Chilopsis linearis
Desert Willow
S
L
12
VL
3
L
2
L
17
Chionanthus retusus
Fringe Tree, Chinese
S T
M
11
L
3
L
3
M
17
Chionanthus virginicus
Fringe Tree, White
S T
M
19
L
3
M
3
M
25
Chitalpa tashkentensis
Chitalpa
S
L
8
L
2
L
2
L
12
Chrysanthemum x morifolium
Garden Mum
P
M
28
M
3
M
2
M
33
Chrysothamnus nauseosus
Rabbitbrush
S
VL
36
VL
9
VL
5
VL
50
Chrysothamnus viscidiflorus
Rabbitbrush, Sticky
S
VL
24
VL
6
VL
2
VL
32
Cimicifuga racemosa
Black Snakeroot
P
M
16
M
1
M
17
Cimicifuga simplex'White Pearl'
White Bottlebrush
P
M
10
M
1
M
11
Cladrastis lutes
Yellowwood
T
M
19
M
3
L
3
M
25
Clematis alpina
Clematis, Alpine
P V
M
13
M
1
M
14
Clematis columbiana
Clematis, Columbian Virgin's Bov
P V
M
7
M
2
M
9
Clematis cultivars
Clematis
P V
M
29
L
2
M
1
M
32
Clematis hirsutissima
Clematis, Woolly
P
L
10
VL
1
L
2
L
13
Clematis integrifolia
Clematis, Bush
P
M
13
L
1
M
14
Clematis ligusticifolia
Clematis, Western Virgin's Bower
P V
L
17
VL
2
L
3
L
22
Clematis montana rubens
Clematis, Pink Anemone
P V
M
11
M
11
Clematis paniculata
Clematis, Spring
P V
M
16
M
1
M
1
M
18
Clematis pitched
Clematis, Purple Leathertlower
P V
M
9
M
9
Clematis tangutica
Clematis, Yellow Lantern
P V
L
16
L
1
L
17
Clematis terniflora
Clematis, Sweet Autumn
P V
L
16
L
1
Ni
1
L
18
Clematis texensis
Clematis, Scarlet
P
M
9
M
9
Clematis virginiana
Clematis, Virgin's Bower
P V
L
8
H
1
M
9
Clematis viticella
Clematis, Italian
P V
M
9
M
9
Cleome hassleriana
Spiderflower
A
M
15
M
1
H
2
M
18
Cleome serrulata
Rocky Mountain Beeplant
A
L
10
L
1
L
3
L
14
Clethra alnifolia
Summersweet
S
H
8
H
2
H
1
H
11
Coleus spp.
Coleus
A
M
25
M
3
M
28
Colutea arborescens
Bladder Pod
S
L
8
L
2
M
1
L
11
Convallaria majalis
Lily -of -the -Valley
GCP
M
25
M
1
M
1
M
27
Coreopsis'Limerock Ruby'
Coreopsis, Limerock Ruby
P
M
14
M
14
Coreopsis auriculata
Coreopsis, Eared
P
L
20
VL
1
L
21
Third Release, May 2008
GreenCO BMP Manual
Page 4 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-5
P37
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004) '
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
West
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Coreopsis grandiflora
Coreopsis, Large -flowered
P
L
23
L
2
L
1
L
26
Coreopsis lanceolata
Coreopsis, Lance -leaf
P
L
25
L
3
L
2
L
30
Coreopsis rosea
Coreopsis, Pink
P
M
18
L
2
L
1
M
21
Coreopsis tinctoria
Coreopsis, Plains
A
L
19
L
1
L
2
L
22
Coreopsis verticillata
Coreopsis, Thread Leaf
P
L
25
L
3
L
1
L
29
Corpus alba
Dogwood, Tatarian
S
M
21
M
2
M
2
M
25
Corpus alternifolia
Dogwood, Pagoda
S T
M
26
M
3
M
2
M
31
Corpus anomum
Dogwood, Silky
S
M
7
H
1
H
1
H
9
Corpus canadensis
Dogwood, Bunchberry
S
M
11
M
2
M
3
M
16
Corpus florida
Dogwood, Flowering
T
H
20
H
3
M
2
M
25
Corpus kousa
Dogwood, Kousa
S T
M
23
H
4
M
3
M
30
Corpus mas
Dogwood, Comelian Cherry
S T
M
25
M
5
M
3
M
33
Corpus pumila
Dogwood, Dwarf Red Tipped
S
M
12
H
1
H
1
M
14
Cornus racemosa
Dogwood, Gray
S T
M
23
M
5
M
4
M
32
Corpus sericea (stolonifera)
Dogwood, Redosier
S
M
23
M
3
H
4
M
30
Corpus stolonifera'Kelseyi'
Dogwood, Kelsey Dwarf
S
M
28
M
4
M
2
M
34
Cortaderia selloana
Grass, Pampas
P
L
11
L
11
Corylus americana
Filbert, American
T
M
19
M
3
M
3
M
25
Corylus avellana'Contorta'
Harry Lauder's Walkingstick
S
M
21
M
3
M
2
M
26
Corylus colurna
Filbert, Turkish
T
L
20
M
3
L
3
L
26
Corylus cornuta
Filbert, Beaked
S
M
10
M
2
M
2
M
14
Cosmos bipinnatus
Cosmos
A
L
27
L
1
L
2
L
30
Cotinus coggygria
Smoke Tree
S
M
27
L
4
L
2
M
33
Cotoneasteradpressa praecox
Cotoneaster, Creeping
S
M
13
M
3
L
2
M
18
Cotoneaster apiculatus
Cotoneaster, Cranberry
S
L
33
M
5
L
3
L
41
Cotoneaster congestus
Cotoneaster, Pyrenees
S
L
8
L
1
L
1
L
10
Cotoneaster dammed
Cotoneaster, Bearberry
S
M
24
M
3
L
2
M
29
Cotoneaster divaricatus
Cotoneaster, Spreading
S
L
27
L
5
L
5
L
37
Cotoneaster glaucophyllus
Cotoneaster, Grey
S
L
10
L
1
L
1
L
12
Cotoneaster horizontalis
Cotoneaster, Rock
S
M
27
L
2
L
2
M
31
Cotoneaster lacteus /parneyi
Cotoneaster, Parney's Red
S
M
10
L
2
L
2
M
14
Cotoneaster lucidus /acutifolius
Cotoneaster, Peking
S
L
33
L
5
L
4
L
42
Cotoneaster multiflorus
Cotoneaster, Many Flowered
S
L
18
L
2
L
2
L
22
Cotoneaster nanshan
Cotoneaster, Creeping
S
L
9
L
1
L
1
L
11
Cowania mexicana
Cliffrose
S
VL
28
VL
5
VL
5
VL
38
Crambe cordifolia
Colewort
P
M
11
M
11
Crataegus 'Skinner Dwarf
Hawthorn, Skinner Dwarf
T
L
10
L
1
L
1
L
12
Crataegus ambigua
Hawthorn, Russian
S T
L
40
L
8
L
6
L
54
Crataegus arnoldiana
Hawthorn, Arnold
T
M
12
L
2
L
2
L
16
Crataegus chrysocarpa
Hawthorn, Fire Berry
S T
L
13
L
3
L
3
L
19
Crataegus crus-galli
Hawthorn, Cockspur
S T
L
40
L
7
L
5
L
52
Crataegus crus-gall!'Inermis'
Hawthorn, Thornless Cockspur
S T
L
37
L
6
L
5
L
48
Crataegus douglassii
Hawthorn, Douglas
S T
L
23
L
6
L
4
L
33
Crataegus laevigata
Hawthorn, English
T
M
24
L
3
L
3
L
30
Crataegus mollis
Hawthorn, Downy
S T
L
28
L
6
L
4
L
38
Crataegus phaenopyrum
Hawthorn, Washington
S T
L
40
L
7
L
4
L
51
Crataegus punctata
Hawthorn, Thicket
T
L
9
L
1
L
10
Crataegus rivularis
Hawthorn, River
S T
M
16
L
3
L
3
L
22
Crataegus succulenta
Hawthorn, Colorado
S T
L
17
L
3
L
3
L
23
Crataegus x mordenensis
Hawthorn, Morden
T
L
18
L
2
L
2
L
22
Cuphea spp.
Cigar Flower
A
M
7
M
1
M
8
Cupressocyparis leylandii
Cypress, Leyland
T
M
6
L
2
L
2
M
10
Cupressus arizonica
Cypress, Arizona
T
L
12
L
3
L
2
L
17
Cytisus purgans'Spanish Gold'
Broom, Spanish Gold
S
L
31
VL
3
L
3
L
37
Cytisus scoparius
Broom, Scotch
S
L
23
L
2
L
3
L
28
Cytisus x praecox
Broom, Warminster
S
L
22
L
2
L
1
L
25
Dahlia pinnata
Dahlia
A
M
21
M
2
M
23
Dalea formosa
Indigo Bush
P
L
7
L
7
Dalea purpurea
Clover, Purple Prairie
P
L
14
M
1
L
15
Daphne cneorum
Daphne, Rose
S
M
15
L
3
M
3
M
21
Daphne x burkwoodi
Daphne, Burkwood
S
M
31
L
3
M
3
M
37
Dasylirion wheeled
Sotol Yucca
S
L
10
L
2
M
1
L
13
Datura sp.
Angel's Trumpet
A
L
16
M
1
L
17
Davidia involucrata
Dove Tree
T
M
6
M
1
M
1
M
8
Delosperma Mesa Verde
Iceplant, Mesa Verde
P
L
21
L
2
L
2
L
25
Delosperma Table Mountain
Iceplant, Table Mountain
P
L
21
L
2
L
2
L
25
Delosperma cooped
Iceplant, Purple
P
L
31
L
4
L
2
L
37
Delosperma floribundum'Starbursf
Iceplant, Starburst
P
L
24
L
3
L
2
L
29
Delosperma nubigenum
Iceplant, Yellow Hardy
P
L
27
L
4
L
2
L
33
Delphinium grandiflorum
Larkspur, Chinese
P
M
21
M
4
L
4
M
29
Delphinium nelsonii
Larkspur, Nelson
P
L
8
M
1
M
1
L
10
Delphinium species
Larkspur,
P
M
18
M
4
M
5
M
27
Delphinium x Pacific Giant
Larkspur, Mixed
P
M
23
M
3
M
4
M
30
Dendranthema weyrichii'Pink Bomb'
Daisy, Pink Bomb
P
M
8
M
1
M
1
M
10
Dendranthema x rubellum'Clara Curtis'
Daisy, Rose Pink
P
M
13
M
1
M
1
M
15
Deschampsia cespitosa
Grass, Tufted Hair
P
M
15
M
2
H
2
M
19
Deutzia gracilis
Deutzia, Slender
S
M
10
M
2
M
2
M
14
Dianthus anatolicus
Pinks, Anatolian
P
L
9
L
1
L
2
L
12
Dianthus barbatus
Sweet William
P
M
24
L
2
M
3
M
29
Dianthus caryophyllus
Carnation, Hardy
P
M
18
L
1
L
2
M
21
Dianthus cultivars
Pinks
A P
M
24
L
2
L
3
M
29
Dianthus deltoides
Pinks, Maiden
P
M
20
L
2
L
2
M
24
Dianthus graniticus
Pinks, Granite
P
M
13
L
2
M
3
M
18
Dianthus gratianopolitanus
Pinks, Pincushion
P
M
17
L
2
L
2
M
21
Third Release, May 2008
GreenCO BMP Manual
Page 5 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-6
I.
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Dianthus plumarius (lumnitzer)
Dianthus x chinensis
Diascia barberae
Diascia integerrima'Coral Canyon'
Dicentra eximia
Dicentra Formosa
Dicentra spectabilis
Dictamnus albus
Diervilla lonicera
Digitalis 'Mertonensis'
Digitalis grandiflora
Digitalis purpurea
Digitalis thapsi
Dodecatheon pulchellum
Doronicium grandiflorum
Draba hispanica
Dracocephalum botryoides
Dryopteris dilatata
Dryopteris erythrosora
Dryopteris filix-mas
Dryopteris marginalis
Duchesnea indica
Dyssodiatenuiloba
Echinacea angustifolia
Echinacea purpurea
Echinops ritro
Elaeagnus commutata
Eleagnus umbellata
Ephedratorreyana
Ephedra viridis
Epilobium fleischeri
Epimedium x cantabrigiense
Equisetum hyemale
Eragrostis trichodes
Erica carnea (herbacea)
Erigeron compositus
Erigeron divergens
Erigeron flagelleris
Erigeron speciosus
Erigeron subtrinervis
Erigeron vetensis
Eriogonum jamesii
Eriogonum umbellatum
Erodium reichardii
Eryngium alpinum'Superbum'
Eryngium amethystinum
Eryngium planum'Blaukappe'
Eryngium vadifolium
Eryngium yuccifolium
Erysimum asperum
Erysimum kotschyanum
Eschscholzia californica
Euonymus alatus
Euonymus europaeus
Euonymus fortunei 'Coloratus'
Euonymus fortuneii
Euonymus kewensis
Euonymus kiautschovica'Manhattan'
Eupatorium purpureum
Euphorbia amygdaloides
Euphorbia polychroma
Eurotia lanata
Fagus sylvatica
Fallopia japonica compacta
Fallugia paradoxa
Fendlera rupicola
Festuca arundinacea
Festuca glauca
Festuca idahoensis
Festuca ovina
Festuca ovina duriuscula
Festuca rubra
Festuca rubra commutata
Filipendula rubra
Filipendula ulmaria
Forestiera neomexicana
Forsythia cultivars
Forsythia viddissima'Broxensis'
Forsythia x intermedia
Fothergilla gardenii
Fothergilla major
Fragaria americana
Fragaria cultivars
Fragaria vesca
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Pinks, Cottage
P
M
13
L
1
L
2
M
16
Border Pink
A
M
17
L
2
M
19
Twinspur
A
M
15
L
1
L
16
Twinspur, Coral Canyon
A P
L
26
L
2
L
2
L
30
Bleeding Heart, Fringed
P
M
22
H
2
H
2
M
26
Bleeding Heart, Fringed
P
M
21
M
3
M
4
M
28
Bleeding Heart, Old Fashioned
p
M
24
M
3
M
4
M
31
Gas Plant
P
M
6
M
6
Honeysuckle, Bush
S
L
20
L
4
L
2
L
26
Foxglove, Perennial Pink
P
M
19
M
1
M
1
M
21
Foxglove, Perennial Yellow
P
M
19
L
3
M
2
M
24
Foxglove, Common
P
M
23
M
1
M
2
M
26
Foxglove, Spanish
P
M
23
M
1
M
1
M
25
Shooting Star
P
M
14
M
1
M
15
Leopard's Bane
p
M
9
L
1
L
1
M
11
Draba, Spanish
P
L
9
L
9
Dragonhead, Evergreen
P
L
5
L
5
Fern, Broad Buckler
P
H
8
H
8
Fern, Autumn
P
M
10
M
1
M
11
Fern, Leatherwood Male
P
M
14
M
1
M
15
Fern,Leathenvood
P
H
10
H
10
Strawberry, Mock
P
L
18
L
1
L
2
L
21
Daisy, Dahlberg
A
L
6
L
6
Coneflower, Narrow Leaf Purple
P
L
22
L
1
L
1
L
24
Coneflower, Purple
P
L
35
L
4
M
2
L
41
Globe Thistle
P
L
21
L
2
L
1
L
24
Silverberry
S
L
19
L
2
L
3
L
24
Autumn Olive
S T
L
22
VL
5
L
4
L
31
Joint Fir, Torrey
S
VL
16
VL
4
VL
4
VL
24
Mormon Tea
S
VL
22
VL
4
VL
4
VL
30
Willowherb, Alpine
P
M
11
L
2
L
2
M
15
Bishop's Hat
P
M
9
M
9
Rush, Scouring
P
H
8
H
1
H
9
Grass, Sand Love
P
L
6
L
1
L
7
Heath, Winter
P
M
5
M
5
Daisy, Cut -Leaf
P
L
17
VL
1
VL
3
L
21
Daisy, Spreading
P
L
9
VL
1
L
1
L
11
Daisy, Whiplash
P
L
13
VL
2
L
2
L
17
Fleabane, Showy
P
L
14
L
1
L
2
L
17
Fleabane, Three -nerved
P
L
9
L
1
L
10
Daisy, Early Bluetop
P
L
5
L
1
L
6
Sulphur Flower, Creamy
P
L
13
L
3
L
4
L
20
Sulphur Flower
P
VL
25
L
4
VL
6
VL
35
Heron's Bill
P
M
8
L
1
M
9
Sea Holly
P
L
10
L
1
L
1
L
12
Sea Holly, Amethyst
P
L
8
L
1
L
1
L
10
Sea Holly, Blue Cap
P
L
11
L
1
L
1
L
13
Sea Holly, Moroccan
P
L
10
L
1
L
1
L
12
Button -Snakeroot
P
L
11
L
1
L
1
L
13
Wallflower
P
L
14
M
1
L
2
L
17
Wallflower, Alpine
P
M
9
M
1
M
2
M
12
Poppy, California
P
L
28
VL
3
L
4
L
35
Burning Bush
S
M
33
M
5
M
3
M
41
Spindle Tree
S T
M
28
M
5
M
3
M
36
Wintercreeper, Purpleleaf
GCP
L
21
L
2
M
1
L
24
Euonymus
S
M
30
M
4
M
3
M
37
Eyonymus, Kew
GC
M
13
M
1
M
14
Euonymus, Manhattan
S
M
28
M
4
M
2
M
34
Joe-Pye Weed
P
M
5
M
5
Spurge, Wood
P
L
13
VL
1
L
1
L
15
Spurge, Cushion
P
L
22
L
1
L
23
Winterfat
S
VL
14
VL
5
VL
3
VL
22
Beech, European
T
M
27
H
3
M
3
M
33
Fleeceflower, Dwarf
P
L
12
VL
1
VL
1
L
14
Apache Plume
S
VL
43
VL
6
VL
6
VL
55
Mockorange, False
S
VL
15
VL
3
VL
3
VL
21
Tall Fescue
TU
M
17
M
3
M
3
M
23
Fescue, Blue
P
L
25
L
3
L
2
L
30
Fescue, Idaho
P
L
7
M
1
L
8
Fescue, Sheep
P TU
L
18
M
3
M
3
L
24
Hard Fescue
TU
M
8
H
1
H
1
M
10
Fescue, Red
TU
M
12
M
2
H
1
M
15
Fescue, Chewings
P TU
L
9
H
1
H
1
M
11
Meadowsweet
P
M
13
M
13
Meadow Sweet
P
M
10
M
10
Privet, New Mexico
S
L
30
VL
5
VL
5
L
40
Forsythia
S
M
32
M
4
M
3
M
39
Forsythia, Dwarf
S
M
20
M
3
L
2
M
25
Forysthia
S
M
26
M
3
M
2
M
31
Fothergilla, Dwarf
S
M
12
L
2
L
2
M
16
Fothergilla, Large
S
M
10
VL
1
L
2
M
13
Strawberry, Wild
GCP
L
21
L
2
L
2
L
25
Strawberry
GCP
M
22
M
1
M
1
M
24
Strawberry, Runnerless
GCP
M
13
M
1
M
14
GreenCO BMP Manual
Third Release, May 2008 Page 6 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-7
P39
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004) '
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
West
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Fragaria virginiana glauca
Strawberry, Scarlet
P
L
6
M
1
M
7
Frasera speciosa
Gentian, Green
P
M
4
H
1
M
5
Fraxinus americana
Ash, White
T
M
36
M
4
M
3
M
43
Fraxinus angustifolia'Raywood'
Ash, Raywood
T
M
8
M
2
M
1
M
11
Fraxinus anomala
Ash, Single -Leaf
S T
L
18
L
4
L
2
L
24
Fraxinus excelsior
Ash, European
T
M
16
M
2
M
1
M
19
Fraxinus latifolia
Ash, Oregon
T
M
6
M
1
M
1
M
8
Fraxinus mandshurica'Mancana'
Ash, Mancana Manchurian
T
M
20
M
2
M
2
M
24
Fraxinus nigra
Ash, Black
T
M
20
M
3
M
3
M
26
Fraxinus pennsylvanica
Ash, Green
T
M
43
M
5
M
4
M
52
Fraxinus quadrangulata
Ash, Blue
T
M
12
M
2
M
2
M
16
Fraxinus velutina
Ash, Arizona
T
M
10
M
3
L
2
M
15
Gaillardia aristata
Blanket Flower, Native
P
L
31
VL
3
L
2
L
36
Gaillardia x grandiflora
Blanket Flower
P
L
25
VL
1
L
2
L
28
Galium boreale
Northern Bedstraw
P
L
8
L
8
Galium odoratum
Sweet Woodruff
P
M
30
L
2
VL
1
M
33
Gaura lindheimeri
Whirling Butterflies
P
L
28
L
2
L
30
Gazania krebsiana Tanager
Gazania, Orange Hardy
A P
L
19
L
1
L
20
Gazania linearis'Colorado Gold'
Gazania, Colorado Gold Hardy
P
L
21
L
1
L
22
Gazania rigens
Treasure Flower
A
L
12
L
1
L
13
Genista pilosa 'Vancouver Gold'
Broom, Vancouver Gold
S
L
11
L
1
L
1
L
13
Genista tinctoria'RoyalGold'
Woadwaxen, Royal Gold
S
L
11
L
2
L
1
L
14
Gentiana affinis
Gentian, Northern Pleated
P
M
11
H
1
M
12
Gentiana cachemirica
Gentian, Himalayan
P
M
6
M
6
Gentiana calycosa
Gentian, Explorer's
P
M
5
L
1
L
6
Gentiana septemfida lagodechiana
Gentian, Crested
P
M
8
H
1
M
9
Geranium caespitosum
Cranesbill, Purple Wild
P
L
15
M
1
L
16
Geranium cinereum'Ballerina'
Cranesbill, Ballerina Grayleaf
P
M
20
M
1
M
21
Geranium cultivars
Cranesbill
P
M
23
M
1
M
1
M
25
Geranium dalmaticum
Cranesbill, Compact Rose
P
M
13
M
1
M
14
Geranium endressii'Wargrave Pink'
Cranesbill, Pink
P
M
15
M
1
M
1
M
17
Geranium himalayense
Cranesbill, Lilac
P
M
17
M
1
M
18
Geranium macrorrhizum
Cranesbill, Adriatic
P
L
14
VL
1
L
2
L
17
Geranium maculatum
Geranium, Wild
P
L
16
M
1
M
17
Geranium magniflorum La Veta Lace
Geranium, La Veta Lace
P
M
11
M
11
Geranium platypetalum
Cranesbill, Broad -petaled
P
M
10
M
1
M
11
Geranium psilostemon
Cranesbill, Armenian
P
M
9
M
1
M
10
Geranium sanguineum
Cranesbill, Bloody
P
M
23
L
3
M
1
M
27
Geranium viscosissimum
Geranium, Sticky
P
L
13
L
1
M
1
L
15
Geranium x cantabrigiense
Cranesbill, Cambridge
GCP
L
16
M
1
M
1
M
18
Geranium x magniium
Cranesbill, Showy
P
M
13
M
1
M
1
M
15
Geranium x oxonianum'Claridge Druce'
Cranesbill, Lilac Pink
P
M
18
L
2
M
20
Geum chiloense
Avens, Chilean
P
M
17
M
1
L
1
M
19
Geum coccineum'Borisii'
Avers, Orange
P
M
15
L
1
M
16
Geum triflorum
Avens, Prairie Smoke
P
L
19
M
2
L
1
L
22
Ginkgo biloba
Maidenhair Tree
T
M
24
M
3
M
1
M
28
Glechoma hederacea
Ivy, Ground
GCP
M
11
L
1
M
12
Gleditsia triacanthos inermis
Honeylocust, Thornless
T
L
42
L
6
L
3
L
51
Globularia cordifolia
Daisy, Dwarf Globe
GCP
L
12
L
1
L
13
Gomphrene globosa
Globe Amaranth
A
L
15
L
2
L
17
Grindelia squarrosa
Gumweed, Curly -cupped
P
L
7
VL
1
L
8
Gutierrezia sarothrae
Snakeweed
P
VL
12
VL
2
L
1
VL
15
Gymnocarpium dryopteris
Fern, Oak
P
L
1
L
1
Gymnocladus dioica
Kentucky Coffeetree
T
L
38
L
5
L
3
L
46
Gypsophila paniculata
Baby's Breath
P
L
33
M
1
VL
1
L
35
Gypsophila rapers
Baby's Breath, Creeping
P
L
24
M
1
L
2
M
27
Hakonechloa macra
Grass, Japanese Forest
P
H
6
H
6
Hamamelis vemalis
Witchhazel, Vernal
S T
M
16
M
3
M
3
M
22
Hamamelis virginiana
Witchhazel, Common
S T
M
18
M
4
M
4
M
26
Haplopappus glutinosus
Golden Star
P
L
8
VL
1
L
9
Hebe albicans
Hebe
P
M
3
M
3
Hedera helix
Ivy, English
V
M
25
L
2
M
1
M
28
Helenium autumnale
Sneezeweed
P
M
17
M
1
L
1
M
19
Helianthemum
Sunrose
P
L
25
M
1
L
1
L
27
Helianthus maximiliana
Sunflower, Maximilian
P
L
27
L
2
VL
1
L
30
Helianthus pumilus
Sunflower, Dwarf
P
L
7
L
7
Helichrysum bracteatum
Strawflower
A
L
11
L
1
L
12
Helichrysum sibthorpii
Everlasting
P
L
5
L
5
Helictotrichon sempervirens
Grass, Blue Avena
P
L
28
L
3
M
1
L
32
Heliopsis helianthoides
False Sunflower
P
M
19
L
1
M
20
Heliotropium arborscens
Heliotrope
A
M
13
M
2
M
1
M
16
Helleborus argutifolius
Hellebore
P
M
14
M
14
Helleborus orientalis
Lenten Rose
P
M
4
M
1
M
5
Hemerocallis
Daylily
P
L
36
L
3
M
3
L
42
Hesperaloe parviflora
Yucca, Red
S
VL
18
VL
3
VL
2
VL
23
Heterotheca horrida
Aster, Golden
P
L
8
L
8
Heterotheca villosa
Aster, Hairy Golden
P
L
12
VL
1
L
13
Heuchera americana
Coral Bells, American
P
M
21
M
1
M
22
Heuchera cultivars
Coral Bells
P
M
27
L
2
M
1
M
30
Heuchera micrantha
Coral Bells, Smallflowered
P
M
19
M
1
M
20
Heuchera sanguinea
Coral Bells
P
M
24
M
1
M
1
M
26
Heuchera x brizoides
Coral Bells, Hybrid
P
M
11
M
11
Heucherella alba
Heucherella, White
P
M
12
M
1
M
13
Hibiscus moscheutos
Rose Mallow
P
M
21
M
21
Third Release, May 2008
GreenCO BMP Manual
Page 7 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-8
W1
I.
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Hibiscus syriacus
Hieracium lanatum
Hierochloe odorata
Hippophae rhamnoides
Holodiscus discolor
Holodiscus dumosus
Hosts cultivars
Hosta sieboldiana
Hosta x fortunei
Hosts x tardiana 'Halcyon'
Hosta x undulata
Houttuynia cordata 'Chameleon'
Humulus lupulus neomexicanus
Hydrangea anomala
Hydrangea anomala petiolaris
Hydrangea arborescens'Annabelle'
Hydrangea macrophylla
Hydrangea paniculata
Hydrangea quercifolia
Hymenoxys acaulis
Hypedcum'Hidcote'
Hypericum calycinum
Hypericum kalmianum
Hypericum patulum
Hypericum reptans
Hyssopus officinalis
Iberis gibraltarica
Iberis sempervirens
Ilex glabra'Compacta'
Ilex x meserveae
Ilex x verticillata'Winter Red'
Impatiens wallerana
Imperata cylindrica'Red Baron'
Incarvillea delavayi
Ipomea batatas
Ipomopsis aggregata
Ipomopsis candida
Iris ensata (kaempheri)
Iris missouriensis
Iris orientalis
Iris pallida'Variegate'
Iris pseudacorus
Iris setosa artica
Iris siberica
Iris x germanica
Iris x pumila
Itea virginica
Jamesia americana
Jasminum fruticans
Juglans nigra
Juncus balticus
Juncus compressus
Juncus effusus
Juncus torreyi
Juniperus chinensis
Juniperus communis
Juniperus horizontalis
Juniperus monosperma
Juniperus procumbens
Juniperus sabina
Juniperus scopulorum
Juniperus squamata
Juniperus utahensis
Juniperus virginiana
Juniperus x media
Kerria japonica 'Pleniflora'
Knautia macedonica
Kniphofia
Koelreuteria paniculata
Kolkwitzia amabilis
Laburnum x watered
Lamiastrum galeobdolon
Lamium maculatum
Lantana spp.
Larix decidua
Lathyrus latifolius
Lathyrus odoratus
Lavandula angustifolia
Lavandula dentata
Lavandula x intermedia
Lavatera thuringiaca
Leontopodium alpinum
Lespedezathunbergii
Leucanthemum x superbum
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Althea
S
M
29
M
5
M
2
M
36
Hawkweed, Felted
P
L
8
L
1
L
9
Grass, Indian Sweet
P
L
5
L
5
Sea Buckthorn
S T
L
28
VL
6
VL
5
L
39
Ocean -Spray
S
L
15
VL
2
VL
2
L
19
Rock Spirea
S
L
23
VL
5
VL
5
L
33
Hosta
P
M
31
L
2
M
1
M
34
Hosta, Sieboldiana
P
M
24
M
1
M
1
M
26
Hosta, Fortunei
P
M
20
M
1
M
21
Hosta, Halcyon
P
M
15
M
15
Hosta, Wavy
P
M
20
M
1
M
2
M
23
Chameleon Plant
P
M
10
M
10
Hop Vine, Native
P V
L
16
L
1
L
2
L
19
Hydrangea, Climbing
S
M
14
L
2
L
2
M
18
Hydrangea, Climbing
V
M
11
M
11
Hydrangea, Annabelle Smooth
S
M
25
M
3
NI
2
M
30
Hydrangea, Bigleaf
S
M
13
M
2
NI
2
M
17
Hydrangea, Panicle
S
M
19
L
2
L
2
M
23
Hydrangea, Oakleaf
S
M
13
L
2
L
2
M
17
Daisy, Angelita
P
L
5
L
1
L
6
St. John's Wort, Hidcote
P S
M
27
L
4
L
2
M
33
St. John's Wort, Mounding
GCP
M
13
M
1
M
14
St. John's Wort, Kalm
S
L
16
M
3
L
2
M
21
St. John's Wort, Goldencup
P
M
12
M
1
M
13
St. John's Wort, Creeping
GCP
L
14
M
1
L
15
Hyssop
P
L
6
L
6
Candytuft, Lilac
GCP
L
13
M
1
L
14
Candytuft, Evergreen
GCP
L
26
M
1
M
1
L
28
Holly, Compact Inkberry
S
M
10
M
2
M
2
M
14
Holly, Blue
S
M
19
M
3
M
2
M
24
Holly, Winter Red
S
H
7
M
2
M
2
M
11
Impatiens
A
H
23
H
1
M
2
H
26
Grass, Japanese Blood
P
M
17
M
17
Gloxinia, Hardy
P
M
11
M
11
Sweet Potato Vine
A
M
17
L
1
M
18
Gilia, Scarlet
P
L
17
L
2
L
2
L
21
Fairy Trumpet, White
P
L
7
L
1
L
8
Iris, Japanese
P
M
19
M
1
M
1
M
21
Iris, Western Blue Flag
P
M
21
L
2
L
2
L
25
Iris, Yellow Butterfly
P
L
8
L
8
Iris, Variegated Sweet
P
L
21
M
1
L
22
Iris, Yellow Flag
P
M
17
H
1
M
18
Iris, Dwarf Blue Flag
P
M
14
M
1
M
15
Iris, Siberian
P
M
27
L
1
L
2
M
30
Iris, Bearded
P
L
33
L
1
L
3
L
37
Iris, Dwarf Bearded
P
L
19
M
1
M
1
L
21
Sweetspire
S
M
7
M
2
M
2
M
11
Waxflower
S
L
20
L
5
L
6
L
31
Jasmine, Evergreen Yellow
P
M
4
M
4
Walnut, Black
T
L
35
L
4
L
3
L
42
Rush, Baltic
P
H
5
H
1
H
6
Rush, Round -fruit
P
H
5
H
1
H
6
Rush, Corkscrew
P
H
5
H
1
H
6
Rush, Torrey
P
H
5
H
1
H
6
Juniper, Chinese
S T
L
39
L
7
L
8
L
54
Juniper, Common
S
L
36
L
6
L
8
L
50
Juniper, Creeping
S
L
30
L
6
L
5
L
41
Juniper, One Seed
S T
VL
37
VL
9
VL
9
VL
55
Juniper, Japanese Garden
S
L
24
L
4
L
3
L
31
Juniper, Savin
S
L
26
L
5
L
5
L
36
Juniper, Rocky Mountain
S T
VL
42
VL
9
VL
10
VL
61
Juniper, Flaky
S
L
26
L
4
L
3
L
33
Juniper, Utah
S T
VL
28
VL
8
VL
6
VL
42
Juniper, Eastern Red Cedar
T
L
35
L
5
L
5
L
45
Juniper, Hybrid Spreading
S
L
16
L
3
L
4
L
23
Kerria, Japanese
S
M
10
L
2
L
2
M
14
Knautia, Purple
P
L
16
M
1
L
17
Torch Lily
P
L
22
L
1
L
23
Golden Rain Tree
T
L
37
L
5
L
3
L
45
Beauty Bush
S
L
29
L
2
L
2
L
33
Golden -Chain Tree
T
M
18
H
2
M
1
M
21
Yellow archangel
GCP
M
14
M
1
M
1
M
16
Nettle, Spotted
GCP
M
20
M
1
M
1
M
22
Lantana
A
L
18
L
2
L
20
Larch, European
T
M
23
M
3
M
4
M
30
Sweet Pea, Perennial
P
L
15
L
1
L
16
Sweet Pea, Annual
A
M
19
M
1
M
20
Lavender, English
P
L
27
L
2
L
2
L
31
Lavender, French
P
L
16
L
16
Lavender, Hybrid
P
L
15
L
15
Shrub Mallow
P
L
20
M
1
M
1
L
22
Edelweiss
P
L
13
M
1
L
2
L
16
Japanese Bush -clover
P
L
6
L
6
Daisy, Shasta
P
M
29
M
1
M
2
M
32
GreenCO BMP Manual
Third Release, May 2008 Page 8 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-9
P41
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Lewisia cotelydon
Leymus arenarius'Glauca'
Liatris punctata
Liatris pycnostachya
Liatris spicata
Ligularia dentata'Othello'
Ligularia przewalskii
Ligularia stenocephala'The Rocket
Ligustrum obtusifolium'Regalianum'
Ligustrum vulgare
Ligustrum x vicaryi
Lilium cultivars
Limonium latifolium
Limonium sinuatum
Linum flavum
Linum perenne
Liquidambar styraciflua
Liriodendron tulipifera
Liriope muscari
Lithospermum incisum
Lithospermum multiflorum
Lobelia cardinals
Lobelia fulgens'Queen Victoria'
Lobelia sp.
Lobularia martitma
Lolium perenne
Lonicera caerulea edulis
Lonicera fragrantissima
Lonicera involucrata
Lonicera japonica
Lonicera korolkowii v. floribunda 'Blue
Lonicera periclymenum
Lonicera sempervirens'Magnifica'
Lonicera syringantha 'Wolfii'
Lonicera tartarica'Arnold's Red'
Lonicera x'Honeyrose'
Lonicera x brownii'Dropmore Scarlet
Lonicera x heckrotti'Goldflame'
Lonicera x xylosteoides
Lunaria annua
Lupinus
Lupinus argenteus
Lychnis chalcedonica
Lychnis coronaria
Lysimachia clethroides
Lysimachia nummularia
Lysimachia punctata
Maackia amurensis
Machaeranthera bigelovii
Machaeranthera pattersoni
Macleaya cordata
Macleaya microcarpa
Magnolia grandiflora
Magnolia kobus
Magnolia stellata
Magnolia virginiana
Magnolia x loebneri
Magnolia x soulangiana
Mahonia aquifolium
Mahonia fremonti
Mahonia rapers
Malus crabapple
Malus sylvestris
Malus x zumi'Calocarpa'
Malva alcea'Fastigiata'
Marrubium rotundifolium
Matteuccia struthiopteris
Mazus reptans
Melampodium leucanthum
Melinis (Rhynchelytrum) nerviglumis
Mentha requienii
Mentha spicata
Mentzelia decapetala
Mertensia lanceolata
Mertensia virginica
Metasequoia glyptostroboides
Microbiota decussata
Mimulus cardinals
Mimulus guttatus
Mimulus lewisii
Mimulus spp.
Mirabilis jalapa
Mirabilis multiflora
Miscanthus floridulus
Common Name
Plant Type
East
Slope
East Slope Votes
West
Slope
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Bitterroot
P
L
9
L
1
L
2
L
12
Grass, Blue Lyme
P
L
8
L
8
Gayfeather, Native
P
L
25
L
2
L
2
L
29
Gayfeather, Thickspike
P
L
13
L
13
Gayfeather, Spike
P
L
26
L
3
L
2
L
31
Groundsel, Golden
P
H
15
H
15
Groundsel, Shavalski's
P
H
8
H
8
Ragwort, The Rocket
P
H
19
H
19
Privet, Regal
S
L
11
L
2
L
2
L
15
Privet, Common
S
L
30
L
5
L
3
L
38
Privet, Golden Vicary
S
M
27
M
4
N1
2
M
33
Lily cultivars
P
M
24
M
1
M
25
Sea Lavender, Wide -leaved
P
L
18
L
18
Statics
A
L
14
L
1
L
1
L
16
Flax, Yellow
P
L
17
L
1
L
18
Flax, Blue
P
L
33
VL
3
VL
4
L
40
Sweetgum, American
T
M
14
M
3
L
2
M
19
Tulip Tree
T
M
21
M
2
L
2
M
25
Lily Turf
A
M
9
M
1
M
10
Puccoon, Narrow -leaf
P
L
5
L
5
Puccoon, Many -flowered
P
L
5
L
5
Cardinal Flower
P
H
17
L
1
H
18
Lobelia, Scarlet
P
M
12
M
12
Lobelia
A
M
20
M
3
M
23
Sweet Alyssum
A
M
16
M
16
Perennial Ryegrass
TU
M
12
M
2
H
1
M
15
Honeysuckle, Bearberry
S
M
11
L
2
L
2
M
15
Honeysuckle, Winter
S
M
8
L
2
L
2
M
12
Honeysuckle, Twinberry
S
M
19
L
4
L
5
M
28
Honeysuckle, Japanese
S V
L
23
M
3
L
3
L
29
Honeysuckle, Blue Velvet Bluelez
S
L
24
L
3
L
4
L
31
Woodbine, Yellow Flowering
V
M
7
M
7
Honeysuckle, Scarlet Trumpet
V
M
18
L
1
L
1
M
20
Honeysuckle, Tiny Trumpet
S
M
16
L
2
L
3
M
21
Honeysuckle, Arnold's Red Tartai
S
L
24
L
4
L
4
L
32
Honeysuckle, Honeyrose
S
M
14
M
3
L
4
M
21
Honeysuckle, Dropmore Scarlet E
V
M
15
L
1
L
1
M
17
Honeysuckle, Goldflame
P S V
M
24
L
2
L
2
M
28
Honeysuckle, European Fly
S
L
19
L
4
L
3
L
26
Money Plant
A
L
9
L
1
L
10
Lupine
P
M
25
L
2
L
2
M
29
Lupine, Silvery
P
L
11
L
1
L
12
Maltese Cross
P
M
15
M
1
L
1
M
17
Rose Campion
P
L
20
M
1
VL
1
L
22
Loosestrife, Gooseneck
P
M
13
H
1
M
14
Moneywort
P
M
20
H
1
M
1
M
22
Loosestrife, Yellow
P
M
11
M
1
M
12
Amur Maackia
T
M
20
M
3
L
4
M
27
Aster, Santa Fe
P
L
9
L
1
L
10
Aster, Patterson
P
L
7
L
7
Poppy, Plume
P
M
10
M
10
Poppy, Plume
P
M
6
M
6
Magnolia, Large -flowered
S
M
6
M
1
M
1
M
8
Magnolia, Kobus
S
M
8
M
2
M
1
M
11
Magnolia, Star
S T
M
28
M
6
M
4
M
38
Magnolia, Sweetbay
S
M
7
M
3
M
2
M
12
Magnolia, Loebner
S
M
11
M
1
M
1
M
13
Magnolia, Saucer
S T
M
28
M
6
M
4
M
38
Oregon Grape Holly
S
L
34
L
5
L
2
L
41
Fremont Holly Grape
S
L
18
VL
5
L
2
VL
25
Creeping Colorado Holly
GCP S
L
36
L
5
L
5
L
46
Crabapple
T
M
41
M
5
L
4
M
50
Apple, Orchard
T
M
27
L
3
L
2
M
32
Crab, Zumi
T
M
10
L
2
L
2
M
14
Hollyhock, Miniature
P
M
16
M
1
L
1
M
18
Horehound, Silvery
GCP
VL
10
VL
10
Fern, Ostrich
P
H
10
M
1
H
11
Mazus
GCP
M
5
M
5
Daisy, Blackfoot
P
L
12
VL
1
VL
13
Grass, Ruby
A
M
10
M
1
M
11
Mint, Corsican
P
L
6
L
6
Spearmint
P
M
11
M
1
M
12
Evening -star
P
VL
9
VL
9
Chiming Bells
P
M
8
M
8
Bluebells
P
M
10
H
1
M
11
Redwood,Dawn
T
M
14
M
4
M
3
M
21
Cypress, Siberian
S
M
10
L
2
M
3
M
15
Monkey Flower, Scarlet
P
H
9
H
9
Monkey Flower, Yellow
P
H
8
H
2
H
10
Monkey Flower, Pink
P
M
9
H
1
M
10
Monkey Flower, Annual
A
H
7
H
2
H
9
Four O'Clock, Annual
A
L
22
L
1
VL
1
L
24
Four-O'-Clock, Desert
P
VL
26
VL
3
VL
3
VL
32
Grass, Giant Chinese Silver
P
M
12
M
12
GreenCO BMP Manual
Third Release, May 2008 Page 9 of 16 Appendix E
City of Aspen Water Efficient Landscaping Standards Page B-10
E,
I.
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
c Name
ithus sinensis
i caerulea
dla laevis
1a didyma
1a fistulosa menthaefolia
es uniflora
alba
igergia capillaris
tis alpestris
pennsylvanica
is domestica
iracemosa
ixfaassenii
na spp.
ibergia hippomanica
microcarpa
sylvatica
m basilicum
sera berlandieri'Siskiyou'
sera brachycarpa
sera caespitosa
sera fruticosa glauca
sera macrocarpa
sera speciosa 'Rosea'
sera strigosa
a polyacantha
um lavevigatum'Herrenhausen'
um vulgare
isis hymenoides
�permum 'Lavender Mist
:permum barberiae compactum
virginiana
pis lambertii
Sandra terminalis
a lactiflora
m virgatum
:r alpinum
ar miyabeanum
�r nudicaule
ar orientale
a persica
nocissus quinquefolia
nocissus tricuspidata
ma canbyi
ma myrtifolia
laris groenlandica
Dnium hybrids
etum alopecuroides
etum orientale
etum setaceum
mon'Elfin Pink'
mon'Hyacinth Flowered'
mon acuminatus
mon alpinus
mon ambiguus
mon angustifolius
mon attenuatus
mon barbatus
mon caespitosus
mon cardinalis
mon Glutei
mon cyananthus
mon davidsonii
mon deustus
mon digitalis'HuskerRed'
mon eatonii
mon ellipticus
mon fruticosus
mon glaber
mon gracilis
mon grandiflorus
mon hirsutus'Pygmaeus'
mon jamesii
mon linarioides
mon neomexicanus
mon nitidus
mon palmeri
mon parryi
mon pinifolius
mon procerus
mon pseudospectabilis
mon rostriflorus
mon secundiflorus
mon strictus
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Grass, Maiden
P
M
26
L
2
M
1
M
29
Grass, Purple Moor
P
M
13
L
1
M
14
Bells of Ireland
A
M
9
M
1
M
10
Bee -Balm
P
M
28
L
2
L
2
M
32
Bee -Balm, Native Lavender
P
L
25
L
1
L
2
L
28
One -Flowered Wintergreen
P
M
4
H
2
M
6
Mulberry
T
M
25
M
3
M
3
M
31
Grass, Muhly
P
L
3
M
1
L
4
Forget -Me -Not
P
M
18
M
1
M
1
M
20
Bayberry
S
M
7
L
2
L
2
M
11
Bamboo, Heavenly
S
M
20
M
1
M
2
M
23
Catmint
P
L
18
L
2
L
20
Catmint, Faassen's
P
L
24
L
2
VL
1
L
27
Flowering Tobacco
A
M
21
M
2
M
23
Cup Flower
A
M
8
M
1
M
9
Grass, Bear
P
L
13
M
1
L
14
Sourgum
T
H
11
H
2
M
2
M
15
Basil
A
M
21
M
2
M
23
Primrose, Siskiyou
P
L
19
VL
1
L
1
L
21
Primrose, Leathedeaf
P
L
11
VL
1
M
1
L
13
Primrose, White Evening
P
VL
18
VL
4
L
2
VL
24
Sundrops
P
L
11
VL
1
M
1
L
13
Primrose, Missouri Evening
P
L
27
VL
2
M
1
L
30
Primrose, New Mexico Evening
P
L
22
VL
1
L
1
L
24
Evening Primrose, Common
P
L
11
VL
1
L
12
Cactus, Prickly Pear
P
VL
25
VL
2
VL
27
Oregano, Purple
P
L
16
L
16
Oregano, Common
P
L
15
M
1
L
16
Grass, Indian Rice
P
L
10
VL
1
L
1
L
12
Sun Daisy, Lavender Mist
P
L
22
VL
1
L
23
Sun Daisy, Purple Mountain
P
L
21
VL
1
L
22
American Hophombeam
T
M
16
M
3
M
3
M
22
Loco Weed, Lambert's
P
VL
9
L
2
L
11
Spurge, Japanese
GCP
M
15
M
2
M
1
M
18
Peony
P
M
23
M
1
M
1
M
25
Grass, Switch
P
L
25
L
2
M
1
L
28
Poppy, Alpine
P
M
19
L
2
L
3
L
24
Poppy, Japanese Alpine
P
M
10
M
1
M
11
Poppy, Iceland
P
M
23
L
2
M
3
M
28
Poppy, Oriental
P
L
27
L
2
N1
3
L
32
Persian Parrotia
T
M
7
M
2
L
2
M
11
Virginia Creeper
V
L
26
L
3
L
2
L
31
Ivy, Boston
P V
M
22
M
1
M
23
Mountain Lover
P
L
12
L
1
M
2
M
15
Mountain Lover
P
L
7
M
1
L
8
Elephant's Head
P
M
8
H
2
H
10
Geranium
A
M
22
M
2
M
24
Grass, Fountain
P
L
23
L
2
L
25
Grass, Oriental Fountain
P
L
11
L
1
L
12
Grass, Annual Fountain
A
M
21
L
2
M
23
Penstemon, Pink
P
L
19
VL
1
L
2
L
22
Penstemon, Hyacinth Flowered
P
M
7
M
7
Penstemon, Sand Dune
P
L
7
L
7
Penstemon, Alpine
P
L
15
L
2
L
2
L
19
Penstemon, Sand
P
VL
15
L
2
VL
17
Penstemon, Narrowleaf
P
VL
11
VL
11
Penstemon, Taper -leaved
P
L
6
L
6
Penstemon, Scarlet Bugler
P
L
22
VL
3
L
2
L
27
Penstemon, Mat
P
L
15
L
3
L
2
L
20
Penstemon, Crimson
P
L
11
VL
1
M
1
L
13
Penstemon, Sunset
P
L
11
L
1
L
12
Penstemon, Wasatch
P
L
12
L
1
L
13
Penstemon, Davidson's
P
L
8
L
8
Penstemon, Hotrock
P
VL
5
VL
1
VL
6
Penstemon, Husker Red
P
L
29
VL
1
M
1
L
31
Penstemon, Firecracker
P
L
22
VL
1
M
1
L
24
Penstemon, Rockvine
P
VL
3
VL
3
Penstemon, Shrubby
P
L
9
L
9
Penstemon, Saw -sepal
P
L
8
L
8
Penstemon, Slender
P
L
6
L
6
Penstemon, Shell Leaf
P
L
21
VL
1
L
22
Penstemon, Pygmy Purple
P
L
13
L
1
L
2
L
16
Penstemon, James
P
VL
8
L
1
VL
9
Penstemon, Blue Mat
P
VL
14
L
1
VL
15
Penstemon, New Mexican Blue
P
L
7
L
7
Penstemon, Smooth Blue
P
VL
8
VL
8
Penstemon, Palmer
P
L
17
VL
3
L
20
Penstemon, Parry
P
L
9
L
9
Penstemon, Pineleaf
P
L
25
VL
3
L
2
L
30
Penstemon, Small -Flowered
P
L
8
L
1
L
9
Penstemon, Desert
P
L
12
L
1
L
13
Bridge's Penstemon
P
L
4
L
4
Penstemon, One-sided
P
L
12
L
12
Penstemon, Rocky Mountain
P
L
27
VL
3
L
3
L
33
GreenCO BMP Manual
Third Release, May 2008 Page 10 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-11
P43
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004) '
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
West
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Penstemon teucrioides
Penstemon, Grayleaf Creeping
P
L
7
L
7
Penstemon triphyllus
Penstemon, Whorled
P
VL
2
VL
2
Penstemon utahensis
Penstemon, Utah
P
L
8
L
8
Penstemon venustus
Penstemon, Blue Mountain
P
VL
5
VL
5
Penstemon virens
Penstemon, Blue Mist
P
L
15
VL
2
L
2
L
19
Penstemon virgatus asagrayi
Penstemon, Tall
P
VL
7
VL
7
Penstemon whippleanus
Penstemon, Whipple's
P
L
15
L
2
L
17
Penstemon wilcoxii
Penstemon, Wilcox
P
VL
2
VL
2
Penstemon x mexicali
Penstemon, Mexicali Hybrids
P
L
23
VL
2
L
25
Perovskia atriplicifolia
Sage, Russian
S
L
35
VL
6
VL
6
VL
47
Persicaria affinis
Himalayan Border Jewel
P
L
17
L
1
L
2
L
20
Persicaria virginiana'Painters Palette
Border Jewel, Painter's Palette
P
L
9
L
9
Petrophytum caespitosum
Rock Spirea
P
L
4
L
4
Petunia x hybrida
Petunia
A
M
22
L
1
M
4
M
27
Phacelia campanularia
California Bluebell
A
L
6
L
1
L
7
Phalaris arundinacea
Grass, Ribbon
P
M
17
M
1
M
1
M
19
Philadelphus coronarius
Mockorange, Sweet
S
L
19
L
2
L
3
L
24
Philadelphus lewisii
Mockorange, Lewis
S
L
22
L
5
L
3
L
30
Philadelphus microphyllus
Mockorange, Littleleaf
S
L
20
VL
5
L
3
L
28
Philadelphus x'Buckley's Quill'
Mockorange, Buckley's Quill
S
M
15
L
3
L
3
M
21
Philadelphus x'Snowbelle'
Mockorange, Snowbelle
S
M
9
L
2
L
3
L
14
Philadelphus x cymosus'Bouquet Blanc'
Mockorange, Bouquet Blanc
S
M
14
L
2
L
3
M
19
Philadelphus x virginalis
Mockorange, Virginal
S
M
19
L
4
L
3
M
26
Phlomis cashmeriana
Sage, Himalayan
P
M
11
M
1
M
12
Phlomis russeliana
Sage, Jerusalem
P
L
9
L
1
L
10
Phlox borealis
Phlox, Antic
P
M
4
M
1
M
5
Phlox divaricata
Phlox, Wild Sweet William
P
M
14
M
14
Phlox douglasii
Phlox, Cushion
GCP
L
9
L
1
L
10
Phlox paniculata
Phlox, Garden
P
M
22
M
1
M
1
M
24
Phlox procumbens
Phlox, Creeping
GCP
L
5
M
1
M
1
M
7
Phlox stolonifera
Phlox, Creeping
GCP
M
10
M
10
Phlox subulata
Phlox, Creeping
GCP
L
25
M
2
L
2
L
29
Phyllostachys aurea
Bamboo, Golden
P
M
7
M
7
Phyllostachys aureosulcata
Bamboo, Yellow Groove
P
M
8
M
8
Physocarpus monogynus
Ninebark, Native
S
L
24
VL
5
L
7
L
36
Physocarpus opulifolius
Ninebark
S
L
23
L
5
L
5
L
33
Physostegia virginiana
Obedient Plant
P
M
21
L
1
M
22
Picea abies
Spruce, Norway
S T
M
32
L
6
L
6
M
44
Picea engelmannii
Spruce, Engelmann
T
M
31
L
6
M
9
M
46
Picea glauca'Conica'
Spruce, Dwarf Alberta
S T
M
35
M
7
M
6
M
48
Picea glauca'Densata'
Spruce, Black Hills
T
M
29
M
5
M
7
M
41
Picea omorika
Spruce, Serbian
T
M
17
M
3
M
4
M
24
Picea orientalis
Spruce, Oriental
T
M
9
M
2
M
2
M
13
Picea pungens
Spruce, Colorado
S T
M
44
L
7
M
11
M
62
Pieris japonica
Pieris, Japanese
S
H
11
M
2
M
2
M
15
Pieris taiwanensis
Pieris, Taiwan
S
H
6
M
2
M
2
M
10
Pinus aristata
Pine, Bristlecone
S T
L
41
L
8
VL
11
L
60
Pinus bungeana
Pine, Lacebark
T
L
15
M
4
L
4
L
23
Pinus cembra
Pine, Compact Swiss Stone
S
L
15
L
5
L
4
L
24
Pinus contorta latifolia
Pine, Lodgepole
T
L
26
L
7
L
11
L
44
Pinus densiflora
Pine, Tanyosho
S T
L
21
L
6
L
5
L
32
Pinus edulis
Pine, Pinon
T
VL
41
VL
8
VL
8
VL
57
Pinus flexilis
Pine, Limber
T
L
36
L
6
L
10
L
52
Pinus heldreichii (leucodermis)
Pine, Bosnian
S T
L
28
L
6
L
4
L
38
Pinus mugo
Pine, Mugo
S
L
36
L
6
L
6
L
48
Pinus nigra
Pine, Austrian
T
L
40
L
7
L
6
L
53
Pinus parviflora
Pine, Lacebark
T
L
9
L
3
L
3
L
15
Pinus ponderosa
Pine, Ponderosa
T
L
41
L
8
L
10
L
59
Pinus resinosa
Pine, Red
T
M
11
L
2
L
2
M
15
Pinus strobiformis
Pine, Border
T
L
20
L
4
L
4
L
28
Pinus strobus
Pine, Eastern White
T
M
32
L
5
M
4
M
41
Pinus sylvestris
Pine, Scotch
T
L
34
L
7
L
7
L
48
Pinus thunbergii
Pine, Japanese Black
T
L
10
L
4
L
4
L
18
Pinus virginiana'Wates Golden'
Pine, Wates Golden Virginia Scru
T
M
5
M
2
M
2
M
9
Platanus occidentalis
Sycamore
T
M
22
M
4
M
3
M
29
Platanus x acerifolia
Planetree, London
T
M
16
M
6
M
3
M
25
Platycladus orientalis'Aurea Nana'
Arborvitae, Dwarf Golden Orienta
S
M
16
M
3
M
2
M
21
Platycodon grandiflorus
Balloon Flower
P
M
23
M
1
M
1
M
25
Plectranthus argentatus
Silver Dollar Plant
A
L
10
VL
1
L
11
Poa praetensis
Bluegrass
TU
H
25
H
2
M
2
H
29
Polemonium caeruleum
Jacob's Ladder
P
M
15
M
1
M
1
M
17
Polemonium carneum
Jacob's Ladder, Salmon
P
M
6
M
6
Polemonium reptans
Jacob's Ladder, Creeping
P
M
7
M
7
Polemonium viscosum
Sky Pilot
P
L
5
M
1
L
6
Polygonum aubertii
Vine, Silver Lace
P V
L
22
L
2
L
2
L
26
Polystichum polyblepharum
Fern, Tassle
P
H
6
H
6
Polystichum setiferum
Fem, English Hedge
P
H
7
H
7
Populus alba
Poplar, Silver
T
M
27
M
6
L
4
M
37
Populus angustifolia
Cottonwood, Narrowleaf
T
M
42
M
7
M
8
M
57
Populus balsamifera
Poplar, Balsam
T
M
14
H
3
H
3
H
20
Populus deltoides'Siouxland'
Cottonwood, Soiuxland
T
M
38
M
8
M
4
M
50
Populus fremontii
Cottonwood, Fremont
T
M
26
M
6
M
4
M
36
Populus nigra
Poplar, Lombardy Black
T
H
16
H
6
H
2
H
24
Populus sargentii
Cottonwood, Plains
T
M
40
M
7
M
4
M
51
Third Release, May 2008
GreenCO BMP Manual
Page 11 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-12
M
I.
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Name
us x acuminata
as x canescens
aca grandiflora
tilla (Drymocallis) fissa
tilla atrosanguinea
tilla fruticosa
tilla hippiana
tilla nepalensis'Miss Willmott'
tilla neumanniana
tilla nevadensis
tilla pensylvanica
tilla species
tilla thurbed
la'Colossea'
la denticulata
la elatior
la parry!
la veris
la vulgaris
Apia sinensis
Ila grandiflora
Ila laciniata
s americana
s armeniaca
s avium
s besseyi
s cerasifera
s cerasus
s fruticosa
s glandulosa'Rosea Plena'
s maackii
s maritime
s nigra'Princess Kay'
s padus
s pensylvanica saximontana
s pesica
s sargentil
s serrulata'Kwanzan'
s subhirtella'Pendula'
s tenella
s tomentosa
s triloba
s virginiana 'Shubert'
s virginiana melanocarpa
s x'Snow Fountains'
s x amedcana'Toka'
s x cistena
s x domestica 'Stanley'
lotsuga menziesii
trophe tagetina
i trifoliata
inaria'Roy Davidson'
,naria rubra'Redstart'
,naria saccharata
:ilia patens
:ilia vulgaris
is tridentata
antha angustifolia
antha coccinea
calleryana
communis
fauriei
ussuriensis
us acutissima
us alba
us bicolor
us coccinea
us ellipsoidalis
us gambelli
us imbricaria
us macrocarpa
us muehlenbergii
us palustris
us phellos
us prinus
us robur
us rubra
us shumardi
us turbinella
us undulata
iculus gramineus
iculus repens
Ja columnifera
Common Name
Cottonwood, Lanceleaf
Cottonwood, Gray
Moss Rose, Portulaca
Cinquefoil, Leafy
Cinquefoil, Red
Potentilla, Shrub
Cinquefoil, Wooly
Cinquefoil, Miss Wilmott
Cinquefoil, Creeping
Cinquefoil, Native Silvery
Cinquefoil, Prairie
Cinquefoil, Creeping
Cinquefoil, Silver
Primrose, Hardy English
Primrose, Drumstick
Primrose, Oxlip
Primrose, Rocky Mountain
Primrose, Cowslip
Primrose, English
Prinsepia, Cherry
Self -Heal
Lacy Self -Heal
Plum, American
Cherry, Sweet
Cherry, Western Sand
Plum, Cherry
Cherry, Sour
Cherry, European Dwarf
Almond, Pink Flowering
Chokecherry, Amur
Plum, Beach
Plum, Princess Kay Canadian
Mayday Tree
Cherry, Pin
Peach
Cherry, Sargent
Cherry, Kwanzan Japanese Flow
Cherry, Weeping Spring
Almond, Dwarf Russian
Cherry, Nanking
Rose Tree of China
Chokecherry, Canada Red
Chokecherry
Cherry, Weeping White
Plum, Toka
Plum, Purple -Leaf
Plum, Stanley Prune
Fir, Douglas
New Mexico Paper Flower
Ash, Wafer
Bethlehem Sage, Roy Davidson'
Lungwort, Redstart
Bethlehem Sage
Pasqueflower, Lavender
Pasqueflower, European
Bitterbrush Antelope
Firethorn, Narrowleaf
Firethorn, Scarlet
Pear, Ornamental
Pear, Orchard
Pear, Korean Wild Pear
Pear, Ussurian
Oak, Sawtooth
Oak, White
Oak, Swamp White
Oak, Scarlet
Oak, Northern Pin
Oak, Gambel
Oak, Shingle
Oak, Bur
Oak, Chinkapin
Oak, Pin
Oak, Willow
Oak, Chestnut
Oak, English
Oak, Northern Red
Oak, Shumard Oak
Oak, Shrub Liveoak
Oak, Wavyleaf
Buttercup, European
Creeping Buttercup
Coneflower, Prairie
East West
Plant Tvpe Slope I East Slope Votes Slope
T
T
A
P
P
S
P
P
GCP
GCP
P
GCP S
P
P
P
P
P
P
P
S
P
P
ST
T
T
S
T
T
S
S
T
T
T
T
S
T
T
T
T
S
S
S
ST
S
S
T
ST
T
ST
P
T
P
P
P
P
P
S
S
S
T
T
T
T
T
T
T
T
T
ST
T
T
T
T
T
T
T
T
T
S
T
P
P
P
35
16
21
8
15
36
14
20
13
18
9
25
5
11
12
9
8
8
12
4
8
14
41
28
25
36
30
23
11
23
30
6
28
28
11
23
14
15
13
14
29
17
42
32
10
16
38
19
35
11
27
14
11
13
13
18
22
19
22
32
18
11
24
12
25
31
23
17
42
15
39
16
24
13
13
30
30
21
13
16
9
15
26
M
M
VL
L
VL
L
L
L
L
L
L
M
L
L
L
L
VL
L
L
M
M
L
L
L
L
M
L
L
VL
Slope
Mountain
Votes
Mountain
Votes
8
M
11
8
M
6
5
M
4
1
L
3
L
1
1
L
1
6
L
8
1
VL
1
1
L
1
1
L
2
2
L
2
2
8
7
6
6
6
4
2
3
4
1
4
5
1
4
3
3
3
4
4
4
8
5
2
3
8
2
6
1
5
2
4
3
4
3
4
4
6
3
5
5
4
4
9
2
6
3
3
2
3
5
5
3
2
2
1
7
4
3
5
4
2
2
2
4
1
3
5
1
2
3
3
2
3
3
2
8
7
2
4
5
2
10
1
4
2
3
6
2
2
3
4
4
5
2
2
3
2
2
6
1
4
2
2
2
2
3
3
2
2
2
1
1
2
All I Total
oions Votes
49
25
25
9
17
50
16
22
16
22
9
34
5
11
12
9
12
8
12
6
8
17
56
39
34
47
40
29
15
28
38
8
35
38
13
29
20
21
18
21
36
23
58
44
14
23
51
23
51
13
36
14
12
13
15
23
32
24
28
38
26
19
35
17
32
39
29
23
57
18
49
21
29
17
18
38
38
26
17
20
10
16
31
GreenCO BMP Manual
Third Release, May 2008 Page 12 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-13
P45
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Name
is frangula 'Asplenifolius'
is frangula 'Columnaris'
is saxitile
is smithii
rhabarbarum
Rhus aromatica
Rhus glabra
Rhus lanceolata
Rhus microphylla
Rhus trilobata
Rhus typhina
Ribes alpinum
Ribes aureum
Ribes cereum
Ribes hirtellum'Pixwell'
Ribes inerme
Ribes leptanthum
Ribes nigrum
Ribes odoratum
Ribes sanguineum
Ribes silvestre'Red Lake'
Ribes uva-crispa'Red Jacket'
Ricinus communis
Robinia neomexicana
Robinia pseudoacacia
Rosa
Rosa foetida'Bicolor'
Rosa foetida 'Persians'
Rosa glauca
Rosa pomifera
Rosa rugosa
Rosa woodsii
Rosa xanthina hugonis
Rosmarinus officinalis
Rosularia globuladifolia
Rubus deliciosus
Rubusidaeus
Rubus odoratus
Rubus parviflorus
Rudbeckia fulgida
Rudbeckia hirta
Rudbeckia laciniata'Double Gold'
Saccharum ravennae
Sagina subulata
Sagittaria latifolia
Salix'Prairie Cascade'
Salix alba 'Tristis'
Salix alba vitellina
Salix amygdaloides
Salix arenaria
Salix bebbiana
Salix caprea
Salix discolor
Salix drummondiana
Salix exigua
Salix fragilis
Salix geyeriana
Salix integra'Hakuro Nishiki'
Salix irrorata
Salix lutea ligulifolia
Salix matsudana 'Umbraculifera'
Salix monticola
Salix pentandra
Salix purpurea
Salix repens
Salix scouleriana
Salix x sepulcralis chrysocoma
Salvia argentea
Salvia azurea grandiflora
Salvia farinacea
Salvia greggii
Salvia jurisicii
Salvia leucantha
Salvia lyrata
Salvia microphylla
Salvia nemorosa
Salvia officinalis
Salvia pitched
Salvia sclarea
Salvia splendens
Salvia superba
Sambucus canadensis
East West I Slope
Common Name Plant Tvpe Slope I East Slope Votes Slope Votes
Buckthorn, Common
S
L
29
Buckthorn, Glossy Cutleaf
S
M
19
Buckthorn, Tall Hedge
S
L
26
Buckthorn, Rock
S
L
10
Buckthorn, Smith's Alder
S
L
16
Rhubarb
P
M
20
Rhododendron
S
H
19
Sumac, Fragrant
S
L
24
Sumac, Smooth
S
L
28
Sumac, Flameleaf
S
L
8
Sumac, Little Leaf Desert
S
VL
12
Sumac, Three -Leaf
S
VL
33
Sumac, Staghorn
S
L
28
Currant, Alpine
S
L
33
Currant, Yellow Flowering
S
L
26
Currant, Squaw
S
L
22
Gooseberry, Pixwell
S
L
20
Gooseberry, Whitestem
S
L
10
Currant, Black
S
L
12
Currant, Black
S
L
9
Currant, Clove
S
L
19
Currant, Red Flowering
S
L
7
Currant, Red Lake
S
L
19
Gooseberry, Red Jacket
S
L
14
Castor Bean
A
M
9
Locust, New Mexico
S T
L
35
Locust, Black
T
L
35
Rose, Shrub
S
M
21
Rose, Austrian Copper
S
L
23
Rose, Persian Yellow
S
L
21
Rose, Red -Leaved
S
L
22
Rose, Apple
S
L
9
Rose, Rugosa
S
L
23
Rose, Native Pink
S
L
25
Rose, Yellow Shrub
S
L
16
Rosemary
A P
L
16
Rosularia, Roundleaf
P
L
5
Boulder Raspberry
S
L
28
Raspberry
S
M
16
Raspberry, Purple -flowering
S
L
12
Thimbleberry
S
M
15
Black -Eyed Susan
P
L
28
Black -Eyed Susan
P
M
25
Black Eyed Susan, Double Gold
P
M
18
Grass, Plume
P
M
13
Pearlwort
GCP
M
10
Arrowhead, Broadleaf
P
H
8
Willow, Prairie Cascade Weeping
T
H
25
Willow, Golden Weeping
S T
H
32
Willow, Russian Golden
S T
H
23
Willow, Peach Leaf
S T
M
26
Willow, Silver Creeping
S
M
11
Willow, Babb's
S
M
9
Willow, Goat
S
H
10
Willow, Pussy
S
H
21
Willow, Drummond
S
H
8
Willow, Coyote
S
M
19
Willow, Crack
S
H
10
Willow, Geyer's
S
H
8
Willow, Dappled
S
H
11
Willow, Blue Stem
S
M
20
Willow, Strapleaf Yellow
S
M
9
Willow, Globe
S T
H
29
Willow, Yellow Mountain
S
H
11
Willow, Laurel Leaf
T
H
16
Willow, Basket
S
H
18
Willow, Creeping
S
M
13
Willow, Scoulers
S
M
7
Willow, Niobe Weeping
T
H
17
Salvia, Silver
P
L
18
Salvia, Blue
P
L
15
Mealycup sage
A
M
10
Sage, Autumn
P
L
15
Salvia, Cutleaf
P
L
13
Sage, Mexican Bush
P
L
7
Sage, Lyre -leaf
P
L
5
Salvia, Red Baby
P
L
8
Salvia, Blue
P
L
19
Sage, Garden
P
L
21
Sage, Pitcher
P
L
9
Clary Sage
A P
L
21
Scarlet Salvia
A
M
11
Salvia, Hybrid
P
L
13
Elder, American
S
M
26
L
L
L
VL
VL
L
L
L
L
L
L
L
L
L
VL
4
5
6
4
4
6
6
7
6
6
5
5
3
3
5
1
3
3
9
6
3
4
4
4
3
3
4
3
3
6
5
6
3
2
1
3
2
3
3
2
2
3
2
6
4
3
4
3
2
3
2
2
Mountain
I:---
L
L
L
L
M
H
L
L
L
L
VL
L
L
L
L
L
L
L
L
L
L
L
L
VL
L
L
L
L
L
L
L
L
L
L
Mountain
Votes
2
3
2
2
2
1
2
4
4
3
3
7
4
6
6
7
6
6
4
3
4
1
4
3
5
4
4
4
4
5
3
5
5
3
1
1
1
2
4
6
7
3
3
1
3
3
4
4
3
2
5
2
3
5
2
3
3
2
2
2
All I Total
oions Votes
26
33
14
23
21
25
33
38
15
19
46
38
46
38
35
31
21
19
15
28
9
26
20
9
49
45
28
31
29
31
15
31
34
22
17
5
38
19
16
24
31
29
19
13
11
9
30
42
34
39
17
14
12
27
13
26
17
13
15
28
13
38
20
21
25
19
11
22
22
17
11
16
13
7
5
8
22
23
9
23
13
14
36
GreenCO BMP Manual
Third Release, May 2008 Page 13 of 16 Appendix E
City of Aspen Water Efficient Landscaping Standards Page B-14
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
1.
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
c Name
icus nigra'Marginata'
icus pubens
icus racemosa
na chamaecyparissus
na rosmarinifolia
ilia procumbens
us drummondii
aria ocymoides
Aga oppositifolia'Purple Robe'
ga x arendsii
sa caucasica
sa columbaria
sa lucida
sa ochroleuca
Na aemula
chyrium scoparium
phragma hydrangeoides
ioplectus lacustris
ioplectus validus
a acutus
> amerioanus
> microcarpus
aria alpina'Arcobaleno'
aria resinosa
i'Autumn Joy'
i'Blue Spruce'
i 'Robustum'
i 'Vera Jameson'
i acre evergreen
i hybridum
i kamtschaticum
i lanceolatum
I populifolium
i sieboldii 'October Daphne '
i spectabile'Indian Chief
i spurium
vvivum species
o cineraria
olongilobus
o spartioides
adendron giganteum
srdia argentea
srdia canadensis
srdia rotundifolia
a laevigata
:a malviflora
acaulis
alpestris
m perfoliatum
chium angustifolium
chium macrocephalum
chium montanum
1o'Golden Baby'
10 decumbens
3o missouriensis
ra japonica
is sorbifolia
alnifolia
aucuparia
decora
hybrids
intermedia
mougeotii
scopulina
estrum nutans
is pectinata
ralcea coccinea
ralcea munroana
a albiflora
a argunta'Compacta'
a decumbens
a fritschiana
a japonica
a nipponica
a prunifolia
a thunbergii
a trilobata
a x'Goldmound'
a x billardii
a x bumalda
a x cineria'Grefsheim'
a x vanhouttei
)olus wrightii
s byzantina
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Elder, Variegated
S
M
16
M
3
M
4
M
23
Elder, Native Red Berried
S
M
18
L
4
L
6
M
28
Elder, European Red
S
M
15
M
4
M
4
M
23
Lavender Cotton
P
L
24
L
2
VL
1
L
27
Lavender Cotton, Green
P
L
18
VL
1
VL
1
L
20
Creeping Zinnia
A
L
11
L
2
L
13
Soapberry, Western
S T
L
8
L
3
L
2
L
13
Rock Soapwort
P
L
20
L
2
M
1
L
23
Saxifrage, Purple Robe
P
M
12
M
1
H
2
M
15
Saxifrage, Rose Mound
P
M
10
H
1
M
11
Pincushion Flower
P
M
19
M
1
L
1
M
21
Pincushion Flower
P
L
16
L
1
L
17
Pincushion Flower, Dwarf
P
L
15
M
1
L
1
L
17
Pincushion, Yellow
P
L
12
L
12
Fan Flower
A
M
11
M
2
M
13
Bluestem, Little
P
L
22
VL
3
L
2
L
27
Vine, Japanese Hydrangea
P
M
4
M
4
Bulrush, Common
P
H
6
H
6
Bulrush, Softstem Great
P
H
6
H
6
Bulrush, Hardstem
P
H
7
H
1
H
8
Bulrush, Three -square
P
H
7
H
1
H
8
Bulrush, Small -fruited
P
H
7
H
1
H
8
Skull Cap, Rainbow
P
M
8
M
1
M
9
Skull Cap, Prairie
P
L
8
L
8
Stonecrop, Autumn Joy
P
L
28
L
1
L
1
L
30
Stonecrop, Blue Creeping
GCP
L
14
L
2
L
2
L
18
Stonecrop, Red -leaf Showy
P
L
11
L
1
L
12
Stonecrop, Vera Jameson
P
L
17
L
1
M
1
L
19
Stonecrop, Goldmoss-Utah
GCP
L
16
L
2
VL
3
L
21
Stonecrop, Oak -leaf
GCP
L
12
VL
1
L
2
L
15
Stonecrop, Russian
P
L
13
L
1
VL
1
L
15
Stonecrop, Native
P
VL
11
VL
2
VL
13
Stonecrop, Herbacious
P
L
8
L
8
Stonecrop, October Daphne
P
L
8
L
8
Stonecrop, Russet Showy
P
L
15
L
1
L
1
L
17
Stonecrop, Two -row
GCP
L
17
L
2
VL
2
L
21
Hens and Chicks
GCP
VL
32
VL
4
L
4
VL
40
Dusty Miller
A
L
22
L
1
L
2
L
25
Groundsel, Threadleaf
P
L
8
L
1
L
9
Groundsel, Broom
P
L
5
L
1
L
6
Giant Sequoia
T
M
10
M
2
L
2
M
14
Buffaloberry
S T
L
35
VL
8
VL
7
VL
50
Buffaloberry, Russet
S
L
19
VL
5
L
6
L
30
Buffaloberry, Roundleaf
S
VL
15
VL
5
VL
4
VL
24
Sibiraea
S
L
11
L
3
L
3
L
17
Mallow, Prairie
P
M
17
M
1
M
18
Moss Campion
P
M
8
M
1
M
9
Alpine Catchfly
P
M
10
M
1
M
11
Cup Flower
P
M
5
M
5
Grass, Blue -Eyed
P
M
15
M
1
M
16
Grass, Yellow -Eyed
P
M
9
M
9
Grass, Blue -Eyed
P
M
10
M
1
M
11
Goldenrod, Golden Baby
P
L
15
L
1
L
16
Goldenrod, Dwarf
P
L
13
H
1
L
14
Goldenrod, Prairie
P
L
9
M
1
L
10
Japanese Pagoda Tree
T
M
26
L
6
M
3
M
35
Spirea, Ural False
S
L
22
M
3
M
4
M
29
Mountain Ash, Korean
T
M
15
L
2
L
2
M
19
Mountain Ash, European
S T
M
35
M
6
L
5
M
46
Mountain Ash, Showy
T
M
12
L
2
L
2
M
16
Mountain Ash, Oak Leaf
S
M
9
L
2
L
2
M
13
Whitebeam, Swedish
T
M
8
M
1
M
1
M
10
Whitebeam, Austrian
T
M
6
M
1
M
1
M
8
Mountain Ash, Native
S T
M
24
M
3
M
4
M
31
Grass, Indian
P
L
19
L
2
L
21
Grass, Prairie Cordgrass
P
M
12
L
1
H
1
M
14
Prairie Mallow
P
VL
17
VL
2
VL
1
VL
20
Globe Mallow, Orange
P
VL
12
VL
12
Spirea, Japanese White
S
M
15
M
3
M
2
M
20
Spirea, Compact Garland
S
L
9
M
2
M
2
M
13
Spirea, White Lace
S
L
6
M
2
M
2
L
10
Spirea, Fritschiana
S
L
10
M
3
M
2
M
15
Spirea, Japanese
S
M
21
L
4
M
3
M
28
Spirea, Snowmound
S
L
23
M
5
M
3
M
31
Spirea, Bridalwreath
S
L
23
M
4
M
3
L
30
Spirea, Thunberg
S
L
5
M
1
M
1
L
7
Spirea, Threelobe
S
L
9
M
3
M
3
M
15
Spirea, Goldmound
S
M
22
M
4
M
3
M
29
Spirea, Billard
S
M
9
M
3
M
3
M
15
Spirea, Bumald
S
M
17
M
3
M
2
M
22
Spirea, Grefsheim
S
M
11
M
2
M
3
M
16
Spirea, Vanhoutte
S
M
25
M
4
M
3
M
32
Grass, Giant Sacaton
P
VL
5
L
1
L
6
Lamb's Ears
GCP
L
25
VL
1
VL
2
L
28
GreenCO BMP Manual
Third Release, May 2008 Page 14 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-15
P47
Appendix E
Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004) '
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Common Name
Plant Type
East
Sloe
East Slope Votes
West
Slope
West
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Stachys coccinea
Nettle, Scarlet Hedge
P
L
10
L
10
Stanleya pinnata
Prince's Plume
P
VL
11
VL
1
L
2
VL
14
Stewartia koreana
Korean Stewartia
S
M
5
H
1
H
1
M
7
Stipa comata
Grass, Needle -and -Thread
P
L
10
L
2
L
12
Stipa gigantea
Needlegrass, Giant
P
L
4
L
4
Stipa lettermani
Grass, Needle
P
L
7
L
7
Stipa neomexicana
Needlegrass, New Mexico
P
L
8
L
8
Stipa tenuissima
Grass, Mexican Feather
P
L
16
L
2
L
2
L
20
Stokesia laevis
Aster, Stokes'
P
M
10
L
1
M
11
Styraxjaponicus
Snowbell, Japanese
T
H
6
H
2
H
2
H
10
Sutera cordata
Bacopa
A
L
9
M
2
M
11
Symphoricarpos albus
Snowberry, White
S
L
24
L
4
L
3
L
31
Symphoricarpos occidentalis
Wolfberry
S
L
13
L
3
L
4
L
20
Symphoricarpos orbiculatus
Coralberry, Red
S
L
20
L
3
M
3
L
26
Symphoricarpos oreophilus
Snowberry, Mountain
S
L
15
L
5
L
5
L
25
Symphoricarpos x chenaultii
Coralberry, Chenault
S
L
18
L
3
M
1
L
22
Symphoricarpos x doorenbosii
Snowberry
S
L
13
L
3
L
2
L
18
Symphytum grandiflorum
Comfrey
P
M
12
M
1
M
13
Syringa laciniata
Lilac, Cutleaf
S
L
14
L
3
L
3
L
20
Syringa meyeri'Palibin'
Lilac, Dwarf Korean
S
L
27
L
5
L
4
L
36
Syringa microphylla
Lilac, Littleleaf
S
L
14
L
3
L
3
L
20
Syringe oblata'Cheyenne'
Lilac, Cheyenne Early
S
L
15
L
4
L
4
L
23
Syringa patula'Miss Kim'
Lilac, Miss Kim Dwarf
S
L
27
L
5
L
4
L
36
Syringa pekinensis
Lilac, Peking
S T
L
28
L
6
L
5
L
39
Syringa reflexa
Lilac, Nodding
S
L
8
L
3
L
2
L
13
Syringa reticulata
Lilac, Japanese Tree
S T
M
34
L
7
L
5
L
46
Syringa vulgaris
Lilac, Common Purple
S
L
35
L
6
L
6
L
47
Syringa x chinensis
Lilac, Chinese
S
L
21
L
4
L
4
L
29
Syringe x hyacinthiflora
Lilac, Hybrid
S
L
18
L
4
L
4
L
26
Syringa x josiflexa 'Royalty'
Lilac, Hybrid Purple Singl
S
L
13
M
3
M
3
L
19
Syringa x persica
Lilac, Persian
S
L
15
L
5
L
3
L
23
Syringa x prestoniae
Lilac, Canadian
S
L
22
M
5
L
4
L
31
Tagetes spp.
Marigold
A
L
23
L
1
L
3
L
27
Tanacetum densum amani
Partridge Feather
GCP
VL
19
VL
1
VL
1
VL
21
Tanacetum niveum
Tansy, Snow Daisy
P
L
15
L
1
VL
1
L
17
Tanacetum parthenium'White Star
Feverfew, White
P
L
16
M
1
L
17
Tanacetum x coccineum
Painted Daisy
P
L
17
M
1
L
18
Taxodium distichum
Bald Cypress
T
M
23
H
2
H
2
M
27
Taxus cuspidata
Yew, Spreading Japanese
S
M
21
H
4
H
2
M
27
Taxus x media
Yew, Anglojap
S
M
25
H
4
H
2
M
31
Teucrium canadensis
Germander, Creeping
P
L
10
L
10
Teucrium chamaedrys
Germander, Wall
GCP
L
14
L
1
L
15
Thalictrum aquilegifolium
Meadowrue, Columbine
P
M
17
M
1
M
1
M
19
Thalictrum delavayi'Hewitt's Double'
Meadowrue, Hewitt's Double
P
M
9
M
1
M
10
Thalictrum dipterocarpum
Meadowrue, Yunnan
P
M
9
M
1
M
10
Thalictrum fendleri
Meadowrue, Fancier's
P
M
7
M
1
M
1
M
9
Thalictrum flavum glaucum
Meadowrue, Yellow
P
M
11
M
11
Thalictrum rochebrunianum
Meadowrue, Lavender Mist
P
M
10
M
1
M
11
Thelesperma ambiguus
Navajo Tea
P
L
6
VL
1
VL
7
Thelesperma filifolium
Threadleaf Thelesperma
P
L
10
VL
2
L
12
Thermopsis divaricarpa
Golden Banner
P
L
10
L
2
M
3
M
15
Thermopsis rhombifolia
Golden Banner, Arroyo
P
L
6
L
1
L
2
L
9
Thuja occidentalis
Arborvitae, American
T
M
32
M
4
M
3
M
39
Thuja orientalis
Arborvitae, Oriental
T
M
23
H
3
M
3
M
29
Thuja plicata
Arborvitae, Giant
T
M
15
H
1
H
1
M
17
Thymus'Elfin'
Thyme, Elfin
GCP
L
15
L
1
VL
1
L
17
Thymus argentia
Thyme, Silver Posy
P
L
7
VL
1
L
8
Thymus praecox'Pseudolanuginosus'
Thyme, Woolly
GC
L
6
L
1
VL
1
L
8
Thymus praecox arcticus
Thyme, Mother of
GCP
L
19
L
2
L
4
L
25
Thymus serphyllum
Thyme, Wild
GCP
L
16
L
2
L
2
L
20
Thymus vulgaris
Thyme, Garden
P
L
15
VL
1
L
16
Thymus x citriodorus
Thyme, Lemon
P
L
19
L
1
L
1
L
21
Tiarella cordifolia
Foamflower
P
M
11
M
1
M
12
Tiarella wherryi
Foamflower, Wherry's
P
M
11
M
1
M
12
Tilia'Euchlora'
Linden, Crimean
T
M
17
M
3
M
3
M
23
Tilia americana
Linden, American
T
M
33
M
6
L
4
M
43
Tilia cordata
Linden, Littleleaf
T
M
36
M
5
M
3
M
44
Tilia mongolica
Linden, Mongolian
T
M
11
M
2
L
2
M
15
Tilia tomentosa
Linden, Silver
T
M
16
M
3
M
2
M
21
Tithonia rotundifolia
Sunflower, Mexican
A
L
15
L
1
L
16
Townsendia exscapa
Easter Daisy, White
P
L
10
L
2
L
12
Townsendia grandiflora
Easter Daisy, Large -flower
P
L
7
L
1
L
8
Townsendia parryi
Easter Daisy, Violet -Blue
P
L
4
L
1
L
5
Tradescantia andersoniana
Spidenwort
P
M
20
M
1
M
1
M
22
Tradescantia occidentalis
Spiderwort, Western Blue
P
L
16
VL
1
M
1
L
18
Tricyrtis hirta
Toad Lily
P
M
6
M
6
Trollius chinensis
Globeflower
P
M
16
M
1
M
1
M
18
Trollius pumilus
Globeflower, Dwarf
P
M
8
M
8
Tropaeolum majus
Nasturtium
A
L
21
L
2
L
23
Tsuga canadensis'Cole's Prostrata'
Hemlock, Canadian Creeping
S
H
10
H
2
H
2
H
14
Tsuga canadensis'Gracilis'
Hemlock, Dwarf Spreading Cana
S
H
10
H
2
H
2
H
14
Typha angustifolia
Cattail, Narrowleaf
P
H
10
H
1
H
11
Typha latifolia
Cattail, Common
P
H
10
H
1
H
11
Ulmus americana
Elm, American
T
M
30
M
4
M
3
M
37
Third Release, May 2008
GreenCO BMP Manual
Page 15 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-16
Appendix E
' Plant Water Requirement Estimates (GreenCO-CSU Crop Coefficient Survey 2004)
Estimated Water Usage for Plant: V L=Very Low < 25 % ETo; L=Low 25 % -50 % ETo; M=Medium 50 % -75 % ETo; H=High >75 % ETo
Plant Type: A=Annual ; P=Perennial; T=Tree; V=Vine; GC=Ground Cover; S=Shrub; TU=Turf
Botanic Name
Common Name
Plant Type
East
Slope
East Slope Votes
West
Slope
West
Slope
Votes
Mountain
Mountain
Votes
All
Regions
Total
Votes
Ulmus cultivars
Elm
T
M
23
L
2
L
2
M
27
Ulmus glabra
Elm, Scotch
T
L
12
L
3
L
2
L
17
Ulmus parvifolia
Elm, Lacebark
T
L
19
M
3
L
4
M
26
Ulmus wilsoniana
Elm, Wilson
T
M
8
M
3
M
3
M
14
Vaccinium
Blueberry
S
M
8
H
2
H
2
M
12
Valeriana officinalis
Garden Heliotrope
P
M
8
M
8
Verbascum 'Helen Johnson'
Mullein, Peach
P
L
4
L
4
Verbascum bombyciferum
Mullein, Wooly
P
L
16
VL
1
L
17
Verbascum undulatum
Mullein, Wavy -leafed
P
L
4
L
4
Verbena bipinnatifida
Verbena, Native
P
L
19
L
19
Verbena bonariensis
Verbena, Tall
A
L
16
VL
1
L
17
Verbena canadensis
Verbena, Rose
P
L
12
M
1
M
13
Verbena hastata
Vervain, Blue
P
M
5
M
5
Verbena x hybrids
Verbena, Garden
A
L
16
L
1
L
3
L
20
Veronica'Royal Candles'
Speedwell, Royal Candles
P
L
4
L
4
Veronica'Sunny Border Blue'
Speedwell, Sunny Border Blue
P
L
18
L
2
M
1
L
21
Veronica Crystal River
Speedwell, Crystal River
GCP
L
10
L
2
L
2
L
14
Veronica allionii
Speedwell, Allioni
GCP
L
15
L
2
L
2
L
19
Veronica austriaca
Speedwell, Hungarian
P
L
12
L
1
M
1
L
14
Veronica filiformis
Speedwell, Birdseye
GCP
L
11
VL
1
L
2
L
14
Veronica gentianoides
Speedwell, Gentian
P
L
8
L
8
Veronica liwanensis
Speedwell, Turkish
GCP
L
21
L
3
L
2
L
26
Veronica longifolia
Speedwell, Long Leaf
P
L
5
L
5
Veronica orientalis
Speedwell, Oriental
P
L
6
L
6
Veronica pectinata
Speedwell, Wooly Creeping
GCP
L
20
L
4
L
2
L
26
Veronica peduncularis'Georgia Blue'
Speedwell, Georgia Blue
P
L
10
L
1
L
11
Veronica prostrata
Speedwell, Prostrate
GCP
L
12
L
2
L
2
L
16
Veronica repens
Speedwell, Creeping
GCP
L
17
L
3
L
2
L
22
Veronica spicata
Speedwell, Spike
P
M
18
L
1
L
1
M
20
Veronica spicata incana
Speedwell, Wooly
P
L
16
L
1
L
17
Veronicastrum virginicum
Bowman's Root
P
M
11
M
11
Viburnum carlesii
Viburnum, Koreanspice
S
M
30
M
3
L
2
M
35
Viburnum dentatum
Viburnum, Arrowwood
S
M
24
M
4
L
2
M
30
Viburnum dilatatum
Viburnum, Linden
S
L
6
M
1
M
1
M
8
Viburnum lantana
Wayfaringtree
S T
L
34
L
7
L
4
L
45
Viburnum lentago
Viburnum, Nannyberry
S
L
26
L
5
M
3
L
34
Viburnum opulus
Viburnum, European
S
M
26
M
5
L
2
M
33
Viburnum plicatum tomentosum
Viburnum, Doublefile
S
M
18
M
3
M
2
M
23
Viburnum prunifolium
Viburnum, Blackhaw
S
M
16
L
4
L
2
M
22
Viburnum rufidulum
Viburnum, Rusty Blackhaw
S
M
5
M
1
M
1
M
7
Viburnum sargentii
Viburnum Sargent
S
M
13
L
3
L
2
L
18
Viburnum trilobum
Viburnum, American CranberrybL
S
M
24
L
5
L
2
M
31
Viburnum x bodnantense'Pink Dawn'
Viburnum, Pink Dawn
S
M
15
M
2
M
2
M
19
Viburnum x burkwoodii
Viburnum, Burkwood
S
M
27
L
4
L
1
M
32
Viburnum x carlcephalum
Viburnum, Fragrant Snowball
S
M
16
L
3
L
2
M
21
Viburnum x juddii
Viburnum, Judd
S
M
18
M
3
L
2
M
23
Viburnum x rhytidophylloides'Alleghany'
Viburnum, Alleghany
S
L
23
L
4
L
2
L
29
Viguiera multiflora
Showy Goldeneye
P
L
5
L
5
Vinca major
Periwinkle, Big -Leaf
GCP
M
16
M
2
M
2
M
20
Vinca minor
Periwinkle
GCP
L
24
L
3
M
2
L
29
Viola canadensis
Violet, Canadian
P
M
6
M
1
M
7
Viola cornuta
Pansy, Tufted
P
M
15
M
1
M
1
M
17
Viola corsica
Violet, Corsican
P
M
16
M
1
M
1
M
18
Viola odorata
Violet, English
P
M
13
M
1
M
14
Viola tricolor
Viola, Johnny -jump-up
A
M
22
M
2
M
24
Viola x wittrockiana
Pansy
A
M
21
M
3
M
24
Vitis cultivars
Grape cultivars
S V
M
22
M
4
M
1
M
27
Vitis riparia
Grape, Frost
S V
M
11
M
3
M
1
M
15
Waldsteinia ternata
Strawberry, Barren
GCP
L
20
L
3
L
2
L
25
Weigela florida
Weigela
S
M
22
M
4
M
2
M
28
Wisteria floribunda
Japanese Wisteria
V
L
2
L
2
Wisteria sinensis
Wisteria, Chinese
V
M
16
M
16
Xanthoceras sorbifolium
Yellowhorn
T
L
10
L
2
H
1
M
13
Yucca baccata
Yucca, Banana
S
VL
26
VL
6
VL
4
VL
36
Yucca elata
Soap Tree
S
VL
23
VL
5
VL
4
VL
32
Yucca filamentosa
Adam's Needle
S
L
27
VL
5
VL
3
L
35
Yucca glauca
Soapweed
S
VL
28
VL
6
VL
6
VL
40
Yucca recurivifolia
Yucca, Spineless
S
VL
15
VL
4
VL
3
VL
22
Zauschneria californica latifolia
Hummingbird Flower
P
L
19
VL
1
L
20
Zauschneria garrettii'Orange Carpet'
California Fuchsia, Orange
P
L
23
VL
2
L
25
Zelkova serrata
Zelkova, Japanese
T
M
11
M
3
M
2
M
16
Zinnia elegans
Zinnia
A
L
23
L
1
L
2
L
26
Zinnia grandiflora
I Paper Flower
I P
I VL
1 23
1 VL
1 3
1 VL
1 1
1 VL
1 27
Third Release, May 2008
GreenCO BMP Manual
Page 16 of 16
City of Aspen Water Efficient Landscaping Standards
Appendix E
Page B-17
...
I.
APPENDIX C — COLORADO STATE UNIVERSITY FIREWISE PLANT LIST
All landscape plantings for properties located in the Moderate or High Wildfire Hazard zone of the City
(see Appendix D) must be firewise. Plants should be selected from the plant list provided by the Colorado
State University Extension Office, which is copied below and can be found here:
http://extension.colostate.edu/topic-areas/natural-resources/firewise-plant-materials-6-305/
Applicant shall provide references for any proposed firewise plant that is not included in this plant list.
City of Aspen Water Efficient Landscaping Standards Page C-1
P50
' FireWise Plant List
The following list was prepared by Phil Hoefer (retired) Colorado State Forest Service. It was reviewed by Jim Knopf, a landscape
architect in Boulder, and two landscape architects on Colorado's Western Slope. Bloom time is approximate (observed in Boulder at
5,600 feet).
Key: Water needs: VL = very low L = low M = medium H = high
Sun/Shade: S = sun PS = part sun Sh = shade
Elevation: Y = Yes N = No ? = Questionable or unknown
Approx. Approx. Elevation Approx.
Water Sun/Shade Mature (1,000 ft.) Bloom
Scientific Name Common Name Needs Preference Height 5 6 7 8 9 Month
Flowers and Ground Covers
Achillea lanulosa a
Achillea tomentosa b
Aconitum spp.°
Aconitum columbianum ac
Ajuga reptans b
Alchemilla sp.
Allium cernuum ac
Allium geyeri ac
Anaphalis margaritacea a
Anemone blanda
Antennaria parvifolia ab
Antennaria rosea ab
Aquilegia spp.
Aquilegia coerulea a
Aquilegia chrysantha a
Arabis sp.b
Armeria maritima
Artemisia caucasica
Artemisia frigida ac
Artemisia ludoviciana a
Aster laevis a
Aster porteri a
Aubrieta sp.b
Aurinia sp.b
Calochortus gunnisonii a
Campanula rotundifolia a
Centranthus ruber
Cerastium strictum ab
Cerastium tomentosum b
Claytonia lanceolata a
Convallana majalis be
Delosperma nubigenum b
Delphinium spp.°
Dianthus spp.
Doronicum sp.
Echinacea purpureaa
Epilobium angustifolium
Erigeron flagellaris a
Eriogonum umbellatum a
Erysimum asperum a
Gaillardia aristata a
Galium boreale ab
Geranium spp.
Geranium caespitosum a
Geum triflorum
Helianthella
quinquenervis a
Helianthemum
nummularium
Helianthus pumilus a
Heuchera spp.
Ipomopsis aggregata a
Native yarrow
Woolly yarrow
Monkshood
Columbian monkshood
Bugleweed
Lady's mantle
Nodding onion
Geyer onion
Pearly everlasting
Windflower
Small -leaf pussytoes
Rosy pussytoes
Columbine
Colorado blue columbine
Yellow columbine
Rockcress
Sea thrift
Caucasian sage
Fringed sage
Prairie sage
Smooth aster
Porter aster
False rockcress
Basket of gold
Mariposa lily
Common harebell
Jupiter's beard
Mouse ear chickweed
Snow -in -summer
Spring beauty
Lily -of -the -valley
Hardy yellow iceplant
Delphinium
Pinks
Leopard's bane
Purple coneflower
Fireweed
Whiplash daisy, trailing
fleabane
Sulphur flower
Western wallflower
Blanket flower
Northern bedstraw
Hardy geraniums
Wild geranium
Prairie smoke
Aspen sunflower
Rockrose
L-H
SYS
1.5 - 2'
Y
Y
Y
Y
Y
Jul
M-H
SYS
.5'
Y
Y
N
N
N
Jul
M-H
S
2'
Y
Y
Y
Y
Y
Jun -Jul
M-H
S
2'
Y
Y
Y
Y
Y
Jun -Jul
H
Sh
< .5'
Y
Y
Y
Y
Y
Jun -Jul
M-H
PS/Sh
1'
Y
Y
Y
Y?
Jun -Jul
L-H
SYS
1'
Y
Y
Y
Y
Y
Jun
L-H
SYS
1'
Y
Y
Y
Y?
Jun
L-H
S
1.5 - 2.5'
Y
Y
Y
Y?
Aug
M-H
S/PS
1'
Y
Y
Y
Y?
Apr -May
M
S/PS
<.5'
Y
Y
Y
Y
Y
Jun
M
SYS
<.5'
Y
Y
Y
Y
Y
Jun
M-H
SYS
1- 2'
Y
Y
Y
Y
Y
Jun -Jul
M-H
SYS
1- 2'
Y
Y
Y
Y
Y
Jun -Jul
M-H
SYS
1- 2'
Y
Y
Y
Y
Y
Jun -Aug
L-H
S
< 1'
Y
Y
Y
Y
Y
May -Jun
L-H
S/PS
.5'
Y
Y
Y
Y
Y
Apr -Jun
L-M
SYS
1- 2'
Y
Y
Y
?
?
n/a
L-M
S
1- 1.5'
Y
Y
Y
Y
Y
n/a
L-M
S
1- 1.5'
Y
Y
Y??
n/a
L-H
SYS
1- 3'
Y
Y
Y
Y?
Aug -Sep
L-M
S
1'
Y
Y
Y??
Aug -Sep
M
S
1'
Y
Y
Y
Y
Y
Apr -May
M
SYS
1'
Y
Y
Y
Y
Y
Apr -May
M-H
S
.5 - 2'
Y
Y
Y
Y?
Jul -Aug
M-H
S
.5 - 1'
Y
Y
Y
Y
Y
May -Oct
L-H
S/Sh
2- 2.5'
Y
Y
Y
Y?
May -Oct
M
S/PS
1'
Y
Y
Y
Y?
May -Jun
L-M
S/PS
1'
Y
Y
Y
Y
Y
May -Jun
M
Sh
.5 - 1.5'
Y
Y
Y
?
?
Mar -Apr
H
Sh
< 1'
Y
Y
Y
Y?
May -Jun
M-H
S
.5'
Y
Y
Y??
Jun
M-H
SYS
.5 - 3'+
Y
Y
Y
Y
Y
Jun -Jul
L-H
S
<.5'- 2'
Y
Y
Y
Y
Y
May -Aug
H
S/PS
2- 3'
Y
Y
Y
Y?
Jul -Aug
M
S
2- 3'
Y
Y
Y
Y
Y
Jul -Aug
H
SYS
3'
N
Y
Y
Y
Y
Jul -Aug
L-M
S
< 1'
Y
Y
?
?
?
Jun -Jul
M
S/PS
<.5'
Y
Y
Y
Y
Y
Jun -Jul
M
S/PS
V+
Y
Y
Y
Y?
Jun -Jul
L-M
S
1- 1.5'
Y
Y
Y
Y
Y
Jul -Sep
M-H
Sh
<1'
Y
Y
Y
Y
Y
May -Jun
M
Sh/PS
2'
Y
Y
Y
Y
Y
May -Oct
M
Sh/PS
2'
Y
Y
Y
Y
Y
May -Oct
M-H
S/PS
1.5'
Y
Y
Y??
Jun
M
S
1'
?
?
?
Y
Y
?
M-H
S
< 1'
Y
Y
Y??
May -Jun
Small sunflower M
Coral bells M-H
Scarlet gilia M
City of Aspen Water Efficient Landscaping Standards
S 1- 2' Y Y Y?? Jun -Jul
PS/Sh 1- 2' Y Y Y Y Y Jun -Aug
S/PS 1- 2' Y Y Y Y Y Jun -Aug
Page C-2
P51
Scientific Name
Common Name
Approx.
Water
Needs
Sun/Shade
Preference
Approx.
Mature
Height
5
Elevation
(1,000ft.)
6 7 8
Approx.
Bloom �■
9 Month
Iris germanica
Bearded iris
L-M
S
1- 3'
Y
Y
Y
Y
Y May -Jun
Iris missouriensis ac
Missouri iris
M-H
S
1- 2'
Y
Y
Y
Y
Y May
Lamium sp.b
Dead nettle
M-H
Sh
< 1'
Y
Y
Y
Y
? May -Jun
Lavandula spp.
Lavender
L-M
S
1 - 2'
Y
Y
Y
?
? Jun -Nov
Leucocrinum montanum a
Sand lily
L-M
S
< 1'
Y
Y
Y
?
? May
Liatris punctata a
Dotted gayfeather
VL-L
S
1- 2'
Y
Y
Y
Y
Y Aug -Oct
Linum lewisii ac
Wild blue flax
L-H
S/PS
1- 2'
Y
Y
Y
Y
Y May -Sep
Lupinus argenteus ac
Silver lupine
M
Sh/PS
1 - 3'
Y
Y
Y
Y
Y Jun -Jul
Mertensia lanceolata a
Narrow -leaved chiming bells
M-H
Sh/PS
1- 2'
Y
Y
Y
Y
Y May -Jun
Mimulus guttatus a
Yellow monkey -flower
H
Sh
1'
?
Y
Y
Y
Y ?
Monarda fistulosa a
Native beebalm
M-H
S/PS
1- 2'
Y
Y
Y
Y
Y Jul -Oct
Oenothera caespitosa a
White stemless evening
L-M
S
1- 2'
Y
Y
Y
Y
Y Jun -Aug
primrose
Papaver orientale
Oriental poppy
H
S/Sh
2- 3'
Y
Y
Y
Y
Y May -Jun
Penstemon caespitosus ab
Mat penstemon
L-M
S
< .5'
Y
Y
Y
Y
Y Jun
Penstemon secundiflorus
Sidebells
L-M
S
1- 2'
Y
Y
Y
Y?
May -Jun
Penstemon teucrioides a
Germander penstemon
L-M
S
.5'
Y
Y
Y
?
? Jun -Jul
Penstemon virens ac
Blue mist penstemon
M
S/PS
.5'
Y
Y
Y
Y
Y May -Jun
Phlox subulata
Moss phlox
M
S
< .5'
Y
Y
Y
Y
Y May
Polemonium sp.
Jacob's ladder
H
SYS
1- 2'
Y
Y
Y
Y
Y May -Aug
Potentilla fissa a
Leafy potentilla
M-H
PS
1'
Y
Y
Y
Y
? ?
Potentilla verna b
Spring potentilla
M-H
PS
< .5'
Y
Y
Y
Y
Y Mar -May
Pulsatilla patens a
Pasque flower
M
SYS
1'
Y
Y
Y
Y
Y Mar -May
Ratibida columnifera a
Prairie coneflower
L-M
S
2'
Y
Y
Y
Y
Y Jul -Sep
Rudbeckia hirta a
Black-eyed Susan
M-H
S
2- 3'
Y
Y
Y
Y
Y Jul -Sep
Salvia officinalis
Cooking sage
L-M
SYS
2'
Y
Y
Y
Y
? Jun
Saxifraga hirsuta
Saxifrage
H
SYS
.51+
Y
Y
Y
Y
Y May -Jun
Scutellaria brittonii a
Skullcap
M
SYS
.5 - 1'
Y
Y
Y
Y
? Aug -Sep
Sedum spp.b
Stonecrop
M
SYS
1- 1.5'
Y
Y
Y
Y
Y Jul -Aug
Sedum lanceolatum a
Yellow stonecrop
M
S/PS
.5'
Y
Y
Y
Y
Y Jul -Aug
Sempervivum sp.
Hens and chicks
L-M
S/PS
.5'
Y
Y
Y
Y
Y n/a
Senecio spartioidesa°
Broom groundsel
VL-L
S
2 - 3'
Y
Y
?
?
? Sep -Oct
Solidago missouriensis a
Smooth goldenrod
L-M
S
1- 2'
Y
Y
Y
Y?
Jul -Aug
Thalictrum fendleri a
Fendler meadowrue
H
SYS
2 - 3'
?
?
Y
Y
Y Jul -Aug
Thermopsis divaricarpa a
Spreading golden banner
M-H
SYS
2'
Y
Y
Y
Y
? May
Tradescantia occidentalis aWestern spiderwort
M
S/PS
1.5'
Y
Y
Y
Y?
Jun -Aug
Thymus spp.b
Thyme
L-M
S
< .5'
Y
Y
Y
Y
Y Jun -Jul
Veronica pectinata
Speedwell
L-M
S
< .5'
Y
Y
Y
Y
Y Apr -Jul
Vinca minor b
Periwinkle, myrtle
H
Sh
< 1'
Y
Y
Y
Y
? Apr -Jun
Waldsteinia sp.b
Barren strawberry
M-H
Sh/PS
< 1'
Y
Y
Y
Y
? May -Jun
Shrubs
Arctostaphylos
Pinemat manzanita
nevadensis ab
Arctostaphylos patula a
Greenleaf manzanita
Arctostaphylos uva-ursi ab
Kinnikinnick, bearberry
Betula glanulosa a
Bog birch
Calluna sp.
Heather
Ceanothus fendleri a
Buckbrush, mountain lilac
Cercocarpus intricatus a
Little -leaf mountain
mahogany
Cercocarpus montanus ac
True mountain mahogany
Chrysothamnus spp.a
Rabbitbrush
Corpus stolonifera a
Redtwig dogwood
Cotoneaster horizontalis
Spreading cotoneaster
Daphne burkwoodii
Burkwood daphne
Erica sp.
Heath
Euonymus alatus
Burning bush euonymus
M S/PS 1- 2' Y Y Y N N n/a
M
S/PS
3- 4'
Y
Y
Y
N
N
n/a
M
S/Sh
1'
Y
Y
Y
Y
Y
n/a
H
S/PS
6- 8'
Y
Y
Y
Y
Y
n/a
H
S/PS
2'
Y
Y
Y??
Jul -Aug
M
S
2'
Y
Y
Y??
Jul
VL-L
S
4- 6'
Y
Y
Y
Y?
n/a
L-M
S
4- 6'
Y
Y
Y
Y?
n/a
VL-L
S
2- 6'
Y
Y
Y
Y
Y
Jul -Aug
H
S/Sh
4- 6'
Y
Y
Y
Y
Y
n/a
M
S/PS
2- 3'
Y
Y
Y
Y?
May -Jun
M
S/PS
2- 3'
Y
Y
Y??
Apr -Jun
H
S/PS
1'
Y
Y
Y??
Jan -Mar
M
S/Sh
1- 6'
Y
Y
Y??
n/a
City of Aspen Water Efficient Landscaping Standards Page C-3
P52
1.
Scientific Name
Common Name
Approx.
Water
Needs
Sun/Shade
Preference
Approx.
Mature
Height
5
Elevation
(1,000 ft.)
6 7 8
Approx.
Bloom
9 Month
Fallugia paradoxa a
Apache plume
VL-L
S
2- 4'
Y
Y
Y
Y
Y Jun -Oct
Holodiscus dumosus a
Ocean spray,
L-M
S/PS
4'
Y
Y
Y
Y
Y Jun
cliff/rock spirea
Jamesia americana a
Wax flower
M-H
S/Sh
2- 6'
Y
Y
Y
Y
Y Jun
Lonicera tatarica
Tatarian honeysuckle
M
S/PS
4- 6'
Y
Y
Y
Y
Y May -Jun
Mahonia aquifolium
Oregon grape holly
M-H
S/Sh
4 - 6'
Y
Y
Y
?
? May -Jun
Mahonia repens ab
Creeping grape holly
L-H
S/Sh
1- 2'
Y
Y
Y
Y
Y Mar -May
Philadelphus
Little -leaf mockorange
M
S
2- 3'
Y
Y
Y
Y?
Jun
microphyllus a
Physocarpus
Mountain ninebark
M
S/Sh
2- 4v
Y
Y
Y
Y
Y Jun
monogynus a
Potentilla fruticosa a
Shrubby cinquefoil
M
S/PS
2-
3'
Y
Y
Y
Y
Y
May -Sep
Prunus besseyi a
Western sand cherry
L-M
S
1-
3'
Y
Y
Y
Y?
May
Purshia tridentata a
Antelope bitterbrush
L-M
S
1
- 2'
Y
Y
Y
?
?
Jun -Aug
Ribes aureum a
Golden currant
M
SYS
2-
3'
Y
Y
Y
Y
Y
Apr -May
Rosa woodsii a
Woods' or native wild rose
M
S/PS
2-
3'
Y
Y
Y
Y
Y
Jun -Jul
Shepherdia canadensis d
Russet buffaloberry
M-H
S
5-
6'
Y
Y
Y
Y
Y
n/a
Symphoricarpos spp. d
Snowberry, coralberry
M
S/PS
2-
3'
Y
Y
Y
Y
Y
n/a
Viburnum edule a
Highbush cranberry
H
S
6-
8'
Y
Y
Y
Y
Y
May -Jun
Yucca baccata a
Banana or broad -leaf yucca
VL-L
S/PS
2
- 3'
Y
Y
Y
N
N
Jun
Yucca filamentosa
Adam's needle
M
SYS
2-
3'
Y
Y
Y
N
N
Jun
Yucca glauca a
Spanish bayonet, small
VL-L
S/PS
2
- 3'
Y
Y
Y
Y
?
Jun
soapweed, Great Plains yucca
Large Shrubs and Trees
Acer ginnala
Ginnala maple
M-H
S
6-
10'
Y
Y
Y
Y
Y
n/a
Acer glabrum a
Rocky Mountain maple
M-H
S/Sh
6-
10'
Y
Y
Y
Y
Y
n/a
Acer grandidentatum a
Wasatch maple
M
SYS
10
- 20'
Y
Y
Y
Y
?
n/a
Alnus tenuifolia a
Thinleaf alder
H
S/PS
6-
8'
Y
Y
Y
Y
Y
Apr
Amelanchier alnifolia ac
Saskatoon alder -leaf
M
S/PS
6-
8'
Y
Y
Y
Y
Y
Apr -May
serviceberry
Amelanchier utahensis a
Utah serviceberry
VL-M
S
4-
6'
Y
Y
N
N
N
May
Betula fontinalis a
River birch
H
S/PS
6-
8'
Y
Y
Y
Y?
n/a
Cercocarpus ledifolius a
Mountain mahogany
VL-L
S
6 -
15'
Y
Y
?
N
N
n/a
Corylus cornuta a
Filbert, beaked hazelnut
H
S/Sh
5
- 6'
Y
Y
Y
?
?
n/a
Crataegus spp.a
Hawthorn (several native)
M
S
6
- 8'
Y
Y
Y
Y
?
May
Fraxinus pennsylvancia
Green ash
M-H
S
20
- 25'
Y
Y
Y
Y
?
n/a
Gleditsia triacanthos
Honeylocust
M-H
S
60
- 70'
Y
Y
N
N
N
May
Malus sp.
Crabapple
M
S
10
- 15,
Y
Y
Y
Y
N
Apr -May
Physocarpus opulifolius a
Tall ninebark
M
SYS
4
- 6'
Y
Y
Y
?
N
May
Populus tremuloides a
Aspen
M
S
8-
25'
Y
Y
Y
Y
Y
n/a
Prunus americana a
American wild plum
M
S/PS
4-
6'
Y
Y
Y
Y
N
Apr
Prunus cerasifera°
Flowering plum
M
S/PS
8-
10'
Y
Y
Y?
N
Apr
Prunus pensylvanica ac
Pin/fire/wild/red cherry
M
S/PS
6
- 8'
Y
Y
Y
?
N
May
Prunus virginiana
Western chokecherry
M-H
S/PS
6-
8'
Y
Y
Y
Y
Y
Apr -May
melanocarpa ac
Rubus deliciosus a
Boulder raspberry,
M
S/Sh
4-
6'
Y
Y
Y
Y
Y
Apr -May
thimbleberry
Salix amygdaloides a
Peachleaf willow H
S/PS 20 - 30'
Y Y Y Y ? n/a
Shepherdia argentea a
Silver buffaloberry M
S/PS 4- 6'
Y Y Y Y? Apr
Sorbus scopulina a
Western mountain ash M-H
S/Sh 6- 8'
Y Y Y Y? May
Svrinqa vulqaris
Common lilac M
S 6- 8'
Y Y Y Y Y Mav
a Native species.
b Ground cover plant.
This species, or some species in this genus, may be poisonous to livestock, pets, wildlife and/or people under some conditions.
Before planting, check with Colorado State University Extension, Colorado State Forest Service, or other knowledgeable personnel.
d Several species of symphoricarpos are native.
City of Aspen Water Efficient Landscaping Standards Page C-4
P53
APPENDIX D — CITY OF ASPEN AND PITKIN COUNTY WILDFIRE HAZARD ASSESSMENT MAPS
City of Aspen Water Efficient Landscaping Standards Page D-1
P54
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P56
I.
MEMO
ELEMENT
TO: Lee Ledesma, City of Aspen Water Consulting
FROM: Logan Burba and Beorn Courtney
ELEMENT Water Consulting, Inc.
DATE: January 29, 2018
RE: Preliminary Analysis of Potential Landscape Water Supply from Residential
Rainwater Catchment in Aspen
The purpose of this memorandum is to provide a brief description of a preliminary analysis we
completed regarding the potential for landscape water supply from residential -scale rainwater
catchment in Aspen. Below is a summary of the key assumptions, methodology, and preliminary findings
from this evaluation.
ESTIMATE OF POTENTIAL WATER CAPTURED
In most years, a considerable amount of precipitation could theoretically be collected from most
residential rooftops. However, for each residential unit served by a centralized municipal system,
Colorado water law currently limits rainwater harvesting to the amount of precipitation that can be
captured in two 55-gallon rain barrels for a total of 110 gallons, unless the captured precipitation is
replaced under an augmentation plan decreed in water court or included in the Colorado Water
Conservation Board's pilot programs. The following assumptions were applied to prepare an estimate of
the volume of water that could be physically and legally captured by residential units in Aspen:
• Precipitation data:
o Ten years of daily data (1/1/2008 through 12/31/2017)
o NOAA Aspen 1 SW Weather Station
• Roof size:
o Assumes runoff from the following roof areas drain to the rain barrels.
o Small roof: 1,500 sq-ft
o Large roof': 3,000 sq-ft
• Rain barrels:
o Two 55-gallon barrels per residential unit
o Capture efficiency of 85%. Factors affecting efficiency include evaporation, splashing,
and roof surface smoothness.
• Rain barrel management for landscape irrigation:
o Begin emptying after precipitation ceases, i.e. no releases during a day with any
precipitation.
1 The "large" roof of 3,000 sq-ft used in this analysis is relative to the "small" roof of 1,500 sq-ft and may not be
representative of a typical "large" roof in Aspen, however the analysis shows that the current legal rain barrel
collection limit of 110 gallons is the primary controlling factor in providing a landscape water supply.
PAGE 1 OF 4
P57
PRELIMINARY ANALYSIS OF POTENTIAL LANDSCAPE WATER SUPPLY '
FROM RESIDENTIAL RAINWATER CATCHMENT IN ASPEN
JANUARY 29, 2018
o Empty over one day. This assumption maximizes the available storage capacity, resulting
in a relatively high estimate of the amount of precipitation that could be captured.
Figure 1 shows the total potential water available (total precipitation over the defined roof size with
applied capture efficiencies) and the potential harvested volume, as limited by the two 55-gallon
barrels, for both a large roof and a small roof. This shows that, on average, there is approximately 7,100
to 14,100 gallons of precipitation available over the irrigation season with small and large roofs,
respectively. However, under the assumptions previously described, only 1,900 to 2,100 gallons of this
could be captured with small and large roofs, respectively. The results indicate that roof size has a
relatively minor effect on the capture volume because 110 gallons of storage capacity is commonly a
limiting constraint. The difference in the volume of harvested water between roof sizes occurs when
precipitation events do not fully fill both barrels. Typically, precipitation events during the modeled
period are sufficient to fill both barrels under both roof size scenarios, resulting in the same amount of
water available for use after the event.
Figure 1: Total Monthly Potential Available Water and Potential Harvested
Water using Average Monthly Precipitation
4000 —
0 3500
°p 3000
v
2500
v
v
2000 —
= 1500
L
Q
v 1000
500
Q
0
May June July August September
—Large Roof: Mean Available Water (gals) —Large Roof: Mean Harvested Water(gals)
Small Roof: Mean Available Water (gals) —Small Roof: Mean Harvested Water (gals)
ESTIMATE OF POTENTIAL LANDSCAPING DEMAND MET
The 110-gallons of rain barrel storage currently allowed per Colorado statute is relatively small when
compared to typical landscape irrigation demands, even if the rain barrels are quickly emptied after
each storm event. The following assumptions were applied to prepare an estimate of the irrigated
PAGE 2OF4
PRELIMINARY ANALYSIS OF POTENTIAL LANDSCAPE WATER SUPPLY
1.
FROM RESIDENTIAL RAINWATER CATCHMENT IN ASPEN
JANUARY 29, 2018
landscape demands that could be met with precipitation captured in rain barrels for residential units in
Aspen.
• Five -month irrigation season of May through September
• Drip irrigation with irrigation efficiencies and landscape demands (evapotranspiration and plant
coefficients) based on the City's Water Efficient Landscaping Standards
o Low Water Use Category: 2.9 gallons per square foot annual demand
• Average number of days available for application were calculated per month based on average
number of precipitation events (and subsequent application days) over the 10-year study period
• Harvested water was compared to the landscape water budget to determine how much
potential square footage could be irrigated per application event for each month
Figure 2 shows the potential area of low water use demands that could be irrigated using the harvested
supply under the large and small roof scenarios. June is the limiting month under all scenarios, being the
lowest average precipitation month. When used as the sole source of supply, harvested precipitation
could support approximately 80 — 90 square feet of "low" use plant materials, depending on the roof
size scenario. However, it should be noted that the analysis shows that only 3 irrigation events may be
available in June, on average, which may or may not be sufficient to maintain healthy plantings.
Accordingly, the estimated areas presented above may require supplementary irrigation in the form of
hand watering to fully meet irrigation needs.3 Other months would have a greater supply from
harvested precipitation and potential for more frequent irrigation events, reducing limitations or
supplementary supply needs during those months.
While rain barrels can effectively offset irrigation needs for small areas of low water -use plant materials
during certain months, they likely would not eliminate the need for at least intermittent irrigation from
other sources in some years, based on Aspen's recent weather conditions. The volume and timing of
supply available is highly variable over the summer irrigation months, which means that rainwater
harvesting is likely better suited as a supplementary source of irrigation water supply.
2 The "very low" water demand plant category has a seasonal irrigation water demand of 0.7 gallons per square
foot and would show that a larger irrigated area could be supported by rain barrels. The "low" demand plant
category was used for this analysis because it provides more flexibility in plantings and provides a more
conservative assumption for this type of preliminary analysis.
3 If harvested precipitation is applied to landscapes with irrigation systems, then there is less potential for an
overall reduction in water use unless irrigation events can be skipped for an entire zone.
PAGE 3OF4
P59
PRELIMINARY ANALYSIS OF POTENTIAL LANDSCAPE WATER SUPPLY '
FROM RESIDENTIAL RAINWATER CATCHMENT IN ASPEN
JANUARY 29, 2018
Figure 2: Potential Irrigated Area per Application Event
using Average Monthly Precipitation
400
350
v 300
v
v
`m 250
n
200
v
as 150
v
°0 100
50
0
May June July August September
—Large Roof: Average irrigated - Low Use Materials —Small Roof: Average irrigated - Low Use Materials
PAGE 4OF4
'.1
'• MEMO
TO: Lee Ledesma, City of Aspen ELEMENT
Water Consulting
FROM: Logan Burba and Beorn Courtney
ELEMENT Water Consulting, Inc.
DATE: January 29, 2018
RE: Colorado Graywater Control Regulation #86 — Utility Participation Summary
The Water Quality Control Commission of the Colorado Department of Public Health and Environment
(CDPHE) adopted a Graywater Control Regulation #86' in 2015. The regulation establishes the allowed
users and uses of graywater within the state of Colorado, the minimum state-wide standards for the
graywater treatment works, and the minimum ordinance requirements for a local jurisdiction that
chooses to authorize graywater use. The purpose of this memorandum is to briefly describe major utility
implementation of Regulation #862.
City and County of Denver
Denver was the first municipality in Colorado to allow graywater reuse. Denver's City Council adopted an
ordinance authorizing beneficial use of graywater in May 2016 and updated the City plumbing code to
allow for graywater systems in early 2016. Rules and regulations and design criteria were developed
and adopted by Denver's Board of Environmental Health in November 2016. Graywater sources are
limited to:
• bathroom and laundry sinks
• bathtubs
• showers
• laundry machines
Currently, Denver allows graywater use in the following two categories are:
• Subsurface irrigation for single family and non -single family limited to 2,000 gallons per day
• Indoor toilet and urinal flushing for single family and non -single family
We corresponded with Jon Novick, Environmental Administrator with City and County of Denver, and
received the below information:
Denver's design criteria are mostly the same as Regulation #86 with minor modifications for
clarification and additional modifications related to setbacks, reporting, and operator
certifications along with other items specific to Denver.
'See https://www.colorado.gov/pacific/sites/default/files/86 2015%2812%29.pdf
Z Graywater is not included in the reuse that occurs through centralized reclaimed water operations, which is
regulated under CDPHE Regulation #84, see:
https://www.colorado.gov/pacific/sites/default/files/84 2013%2807%29hdr.pdf
https://watereuse.org/sections/watereuse-colorado
There are a couple of draft bills that have been introduced this legislative session to further advanced this category
of reuse.
PAGE 1 OF 2
P61
COLORADO GRAYWATER CONTROL REGULATION #86 — UTILITY PARTICIPATION SUMMARY '
JANUARY 29, 2018
• Recently, the City's Department of Community Planning and Development (CPD) passed a policy
related to review of graywater plan sets, which was the last piece required to make Denver's
graywater program fully functional. Outreach has consisted primarily of communicating with
the City's registered neighborhood organizations through Denver Department of Public Health
and Environment (DPHE)'s Sustainable Neighborhoods Program and through social media.
• To date, they have not received any applications for permits for graywater systems, but hope to
see some for laundry to landscape this spring.
o They are aware of a few graywater systems in their service area that are operating
without a permit. Anticipate this is due to restrictive requirements, but hope that future
State regulation changes will allow more flexibility.
• The application process entails the applicant applying for a plumbing permit and submitting
plans to CPD and Denver DPHE for review and approval. Permit fees are based on the value of
work being performed.
• Denver does not currently have requirements for new developments to include a graywater-
compliant stub -out, but may consider adding this type of requirement.
• Denver reported that Tri-County Health, Boulder County Public Health, and Jefferson County
Public Health have all expressed interest in developing graywater programs, but Denver is not
aware of the status of their graywater programs.
Other Local Utilities and Initiatives
In February of 2017, Colorado Springs Utilities (CSU) approved an Integrated Water Resources Plan for
the utility. Neither graywater nor rainwater harvesting were included in the final report, and they were
not considered as significant future sources of supply at that time. In an undated public outreach
document, it was stated that until CDPHE has fully developed regulations and policies in place to protect
public health, CSU will not implement graywater use. It is our understanding that other water providers
who are interested in allowing graywater are in a similar situation of monitoring the CDPHE regulations.
Adding design criteria details and standard specifications to Regulation #86 may help local permitting
agencies develop more consistent and reliable regulations and better address public health and safety
concerns.
Another topic of consideration is the extent to which graywater reuse reduces net water supply
requirements. In situations where a water provider has another mechanism to reuse its supplies, either
through the infrastructure of a reuse system or through a water rights accounting mechanism3,
graywater reuse may not provide a significant net increase in supply. There is also a practical
consideration of whether the cost of installing and maintaining a graywater system can be offset, either
upfront through some sort of incentive (e.g. rebate) or reduction in the service connection fee for new
construction, or over the long-term through reduced water/wastewater service fees. We are aware of a
vendor who is actively marketing greywater systems for commercial and residential systems in Colorado
and can connect you with them if you are interested.
3 Some providers are able to get a '2"1 use' of their fully consumable water supplies through a decreed water rights
exchange and accounting mechanism. Potential water rights implications should be considered but are not
addressed in this memorandum.
PAGE 2OF2
P62
MEMO
TO: Lee Ledesma, City of Aspen ELEMENT
Water Consulting
FROM: Logan Burba and Beorn Courtney, ELEMENT Water Consulting
DATE: February 6, 2018
RE: QWEL Program Information
The City of Aspen's Water Efficiency Standards require a post -installation site audit and report
prepared by a third party certified landscape irrigation auditor. As currently defined in the
Standards, a certified landscape irrigation auditor is "a person certified to perform landscape
irrigation audits by an accredited academic institution, a professional trade organization or
other program labeled by U.S. Environmental Protection Agency's WaterSense program."
Additionally, the Roaring Fork Regional Water Efficiency Plan includes a certification program
targeted at property managers and landscaping professionals to encourage creation and
maintenance of water efficient landscapes. To satisfy these requirements, an existing
certification such as Irrigation Association (IA) or Qualified Water Efficient Landscaper (QWEL)
certification program could be utilized, or a locally managed certification program through the
utility could be developed. Castle Rock Water and Meridian Metropolitan District in the south
metro Denver area both developed and operate their own training and certification programs.
The purpose of this memorandum is to summarize the selection process of QWEL by the South
Metro Water Supply Authority and provide some background on the QWEL program for
Aspen's consideration.
QWEL BACKGROUND
The importance of certified landscape contractors in reducing outdoor use was identified and
described in the Roaring Fork Regional Water Efficiency Plan. The City recently conducted
stakeholder outreach and it appears that the closest certified auditors are currently located in
Grand Junction and Golden, Colorado and are certified through the Irrigation Association. While
there is currently only one certified QWEL professional in Colorado listed on the QWEL website,
located in the Denver area, we are aware of other Colorado water providers are evaluating the
effectiveness and benefits of adopting QWEL as a certifying program. Through a regional
conservation program planning process, the South Metro Water Supply Authority (SMWSA)
evaluated different landscape and irrigation professional certification programs, specifically IA,
QWEL, and a locally developed program. QWEL was selected over other certification programs
due to the ability to modify curriculum to provide a greater overview of local water supply and
demand details, the broad perspective of how landscape and irrigation techniques work
together to optimize efficiencies, and practical training and application of irrigation installation
audits. An additional training of design and installation of graywater systems has recently been
added to the QWEL certification program suites for an additional program cost. Certification
through the IA focuses almost entirely on irrigation systems, not incorporating landscaping
considerations, and these certifications are very specialty -based, providing a certification in a
PAGE 1 OF 3
P63
QWEL PROGRAM INFORMATION '
February 6, 2018
specific irrigation area as opposed to the broader training offered through QWEL. Locally
developed certification programs like those operating in Castle Rock and Meridian Metropolitan
District, while most adaptable and locally -focused, require large up -front costs and efforts in
the curriculum development, exam creation, and programmatic structure. QWEL requires some
level of local modification to the curriculum up front, but the bulk of the materials are already
developed upon program adoption.
SMWSA has determined that the QWEL certification program best fits the goals of the SMWSA
members to develop a regional certification program. The QWEL program provides landscape
professionals with approximately 20 hours of education on principles of landscape water
management including proper plant selection for the local climate, irrigation system design and
maintenance, and irrigation system programming and operation. In order to obtain the QWEL
certification, an individual must demonstrate their ability to perform an irrigation system audit
as well as pass the QWEL exam. The QWEL program is recognized as a WaterSense labeled
Professional Certification Program for Irrigation System Audits and upon certification, graduates
receive the WaterSense Certified Professional designation, providing a nationally recognized
level of certification.
The Sonoma-Marin Saving Water Partnership in California sponsors the QWEL program and
certification is currently offered in six states across the nation; this would be the first for
Colorado. The QWEL curriculum is well established, however certain sections of the program
(including the first class "Where Your Water Comes From") and potentially the testing will need
to be updated to reflect local conditions. As allowable, SMWSA would also like to integrate
aspects of a regional landscape regulation that is currently under development into the local
aspects of the QWEL training.
Currently, there are no approved Professional Certifying Organizations (PCOs) in the state of
Colorado and only one professional certified under the QWEL program in the Denver -Metro
area. As mentioned above, the SMWSA is developing an operational program structure to
adopt and operate QWEL as a regional landscape certification program under a Colorado Water
Conservation Board (CWCB) Water Conservation Implementation/Public Education & Outreach
grant with technical assistance from ELEMENT. Information being developed includes a
program administrative structure, pilot and ongoing budget and schedule development, and
local content development. While this material is being developed under a CWCB grant,
eventually making this information available through the grant reporting, we recommend that
Aspen directly communicate with the SMWSA staff to learn how their regional efforts could
translate to the development of a similar program in Aspen and we are happy to assist in that.
ROARING FORK REGIONAL QWEL PROGRAM
Staff from the City of Aspen and Roaring Fork Conservancy have discussed the potential to
develop a regional Roaring Fork QWEL program. QWEL requires payment of an "onboarding
fee" upon application to become a PCO, as shown in the table below.
PAGE 2OF3
QWEL PROGRAM INFORMATION
=
1.
February 6, 2018
Type of Organization
Fee
Retail water agency with 3,000 or
less connections, non -government
organizations, and educational
institutions
$1,000
Retail water agency with more than
3,000 connections
$2,500
Wholesale water agency
$10,000
There is also an annual fee based on how many certifying professionals have been certified
under your PCO, shown in the table below.
Number of Certified Professionals
as of December 31
Fee
0 to 100
$500
101 to 500
$1,000
501 to 1,000
$1,500
1,001 to 2,500
$2,500
2,501 to 5,000
$5,000
PCOs should also plan for administrative costs, including payment for contracting to trainers,
training space rental, printing of program materials, potential costs associated with exam
proctoring and grading, and program management and evaluation. Some of these costs may be
absorbed by utilizing staff time or finding training locations with no or minimal costs. While
these costs will vary based on specific program decisions and contracting individuals, we
estimate these administrative and operational costs to be between $7,000 to $12,000 per
training session'.
As mentioned above, only one professional is currently certified as a QWEL certified individual
in the state of Colorado. Based on this, the options for implementing the certification program
are: 1) hire an existing out-of-area/state trainer and pay associated travel fees, or 2) certify a
local trainer through QWEL's "Train the Trainer" program and contract with that individual (or
individuals) for all ongoing training. To implement this program, Aspen should plan for up -front
efforts to include development of local content, program structure, engagement/training of
trainer(s), and budget development prior to being able to hold the first training session. These
efforts should begin a few months prior to your targeted first training session, and ELEMENT
can help support any of these efforts upon request.
1 This includes a 3-day training, exam, grading, and certification for participating landscaping professionals.
PAGE 3OF3
P65
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►yi l =I ►yi Eel ZT-111 k I III Ill
TO: Mayor and City Council
FROM: John Krueger and Lynn Rumbaugh, Transportation
THRU: Barry Crook, Assistant City Manager
DATE OF MEMO: February 6, 2018
DATE OF MEETING: February 13, 2018
RE: Short -Range Transit/TDM Plan
SUMMARY
City Transportation staff and consultant Fehr & Peers will present the results of the Short -Range
Transit/TDM planning process at Council's February 13, 2018 work session. At the work
session, Fehr & Peers will discuss the project's process and key recommendations. The
consultants will also review timely issues such as how to prioritize a vast and rapidly changing
menu of mobility options. Finally, staff will seek direction from Council related to
implementation of specific transit and TDM recommendations in 2018 and beyond.
PREVIOUS COUNCIL ACTION
• In 2016, Aspen City Council approved the undertaking of a Short -Range Transit Plan
(SRTP) as part of the Transportation Fund's 2017 budget.
• On February 13, 2017, Council approved a grant agreement with the Colorado Department
of Transportation, accepting $40,000.00 in FTA grant funding towards the development of
an SRTP.
• In May of 2017, Council approved a contract with Fehr & Peers for the preparation of the
SRTP.
1
P67
11.
BACKGROUND
A Short -Range Transit Plan is typically a 5-7-year planning document focused on the provision
of fixed -route transit services including potential improvements to operations, equipment and
facilities. An SRTP serves as a guiding document from which to prepare successful State and
Federal grant applications. Aspen's previous SRTP was adopted in 2009 and resulted in
improvements to the Burlingame route.
The opportunity to undertake a planning process in 2017 proved to be quite timely given the
nature of City Council's Top Ten Goals as well as the emergence of the Mobility Lab project.
With that in mind, staff wrote the scope of its grant project and its RFP to expand beyond the
typical SRTP to include an in-depth consideration of Transportation Demand Management
measures as well as emerging technologies.
With the City's SRTP in need of an update, Transportation staff budgeted $100,000.00 for a
2017 effort and applied for grants to potentially offset the cost, ultimately securing $40,000.00 of
Federal Transit Administration planning funds.
Following an RFP process, Fehr & Peers was selected as the lead consultant and began work in
June of 2017 with a robust existing conditions analysis followed by local outreach, peer review
and academic research efforts. The final report was completed in December of 2017 and is
included in this memo as Attachment B. Due to the length of the appendices the full report (418
pages) has been made available on the Transportation home page:
htlps://www.cityofaspen.com/DocumentCenterNiew/2204.
If you prefer to receive a hard copy of the full report with appendices, please contact staff.
DISCUSSION
The Short -Range Transit Planning process began with a robust public outreach effort including a
public open house, focus groups and online engagement. Concurrently, Fehr & Peers extensively
reviewed Aspen's existing policies, planning documents and transportation services. Also
2
11.
important to staff was a review of both peer and non -peer communities as a means of assessing
best practices not only in resort towns, but in cutting edge communities across the nation.
The above efforts led to a number of consultant recommendations which are phased into short,
medium or long-term items including:
• Extend summer transit service levels through September
• Increase frequency on both the Castle/Maroon and Hunter Creek routes
• Replace some fixed route with on -demand service
• Expand TDM programs such as TOP and Emergency Ride Home
• Expand the CAR TO GO program
• Consider new policies and programs such as a trip reduction ordinance
Staff s priority recommendations are outlined on page 3 of this memo. Based on Council
direction, staff will work these items into near term and long-range budget processes. It is
important to note that some efforts such as dog -friendly buses, although not listed as high
priority via this process, may be a good fit for the 2019 Mobility Lab due to their experimental
nature. Additionally, although staff sees the development of an app as a high priority, it is
assumed that this priority falls within the scope of the Mobility Lab.
FINANCIAL IMPLICATIONS
The financial implications of plan implementation will vary based upon Council's preferences.
Staff s recommended implementation plan, including financial implications, is outlined on page
3 of this memo.
ENVIRONMENTAL IMPLICATIONS
The continued improvement of public transportation services is a vital component of the City's
environmental efforts.
3
11.
RECOMMENDATIONS
2018
ITEM
ESTIMATED COST
NOTES
Expand summer service
$81,100
No new capital required.
schedule through
Supplemental budget request needed
September
6,900 additional passenger trips
forecasted.
Expand CAR TO GO
$60,000
Includes addition of electric vehicle
program
and charging station including basic
installation. Grant funding could
reduce costs.
Expand TOP program
$25,000
Expand efforts to target smaller
businesses, providing services such as
trip planning, grants and emergency
ride home.
Explore partnerships with
Staff time
This effort is underway.
national carshare
organizations
Research trip reduction
Staff time
ordinances including
impact
2019
ITEM
ESTIMATED COST
NOTES
Apply for grants for
Staff time
This step is necessary to move
additional transit vehicles
forward with 2020 work plan.
Define an operations
Staff time
Includes conversations with RFTA
model for a
about possible changes to current
public/private partnership
operations.
for on -demand service.
Market a mobile trip
TBD
Part of Mobility Lab work plan.
planning app
Expand the Emergency
TBD
Cost dependent upon level of
Ride Home program
expansion.
Increase carpool
TBD
Partner with Parking to review
incentives
permitting and incentive options.
P70
11.
2020
ITEM
ESTIMATED COST
NOTES
Provide peak period 10-
$297,800 operating
Requires additional diesel or electric
minute service on Castle
$500,000 diesel bus
bus. Grant funding could reduce cost.
Maroon route.
$950,000 electric bus
53,100 additional passenger trips
forecasted.
Provide peak period 10-
$131,700 operating
Requires additional diesel or electric
minute service on Hunter
$500,000 diesel bus
bus. Grant funding could reduce cost.
Creek route.
$950,000 electric bus
28,600 additional passenger trips
forecasted.
Replace fixed route
TBD
Consultant recommends focus on
service with on -demand
Mountain Valley and Cross -Town
service.
routes. Additional analysis and
outreach is needed.
Replace spring/fall late
-$121,500
Requires further discussions with
night service with on-
RFTA.
demand starting at 7 m
Increase carpool
TBD
Partner with Parking to review
incentives
permitting and incentive opt ons.
ALTERNATIVES
Council may direct staff to phase SRTP recommendations on an alternative timeline.
ATTACHMENTS
Attachment A: Fehr & Peers High Priority Recommendations
Attachment B: SRTP Report (without appendices)
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