HomeMy WebLinkAboutFile Documents.100 Luke Short Ct.0029.2019 (2).ARBK CONSTRUCTION MANAGEMENT PLAN
APPROVED IEN BUILDERS
DATE
BY
100 Luke Short
Aspen, CO ASPEN, CO 81611
Building "H"
RECEIVED
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ASPEN
BUILDING DEPARTMENT
TABLE OF CONTENTS
1.0 GENERAL
1.1 Purpose
1.2 APPLICABLIITY
1.3 DEFINITIONS AND TERMS 1
1.4 REFRENCES 2
2.0 PROJECT LOCATION 3
2.1 DISTURBANCE AREA 3
2.2 LOCATION 3
2.3 DESCRIPTION 3
3.0 PROJECT DOCUMENTATION 3
3.1 PERMITS/OTHERDOCUMENTS 3
3.2 PUBLIC NOTIFICATION 3
3.3 PROJECT SIGN 4
3.4 CONTACTDESIGNATION 4
4.0 PROJECT IMPLEMENTATION 4
4.1 DATESOFCONSTRUCTION 4
4.2 HOURS OF CONSTRUCTION 5
4.3 SEQUENCE (PHASING) OF CONSTRUCTION 6
4.4 ADJOINING PROPERTIES 6
4.5 PROJECT FENCING 6
4.6 PUBLIC HEALTH AND WELFARE 6
4.7 NATURAL ENVIRONMENT 6
5.0 SITE AND RIGHT OF WAY MANAGEMENT 7
5.1 RIGHTOFWAYMANAGEMENTPLAN 7
5.2 EMERGENCYVEHICLEACCESSANDORDINANCE35 7
5.3 CONSTRUCTION PARKING DETAILS 7
5.4 STAGING AREAS 8
5.5 RIGHT OF WAY LIMITATIONS 9
5.6 SITE PLAN 10
5.7 WASTE MANAGEMENT 11
6.0 TRAFFIC CONTROL 12
6.1 GENERAL 12
6.2 HAUL ROUTES 12
6.3 ONSITE VEHICLE LIMITATIONS 12
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6.4 DELIVERY REQUIREMENTS 12
6.5 TRAFFIC CONTROL PLAN 12
7.0 PEDISTRIAN PROTECTION 13
7.1 GENERAL 13
7.2 LIMITATIONS 13
8.0 SEDIMENT AND EROSION CONTROL 13
8.1 REQUIREMENTS 13
8.2 SMUGGLER MOUNTAIN RESTRICTIONS 13
9.0 FUGITIVE DUST CONTROL 14
9.1 FUGITIVEDUSTCONTROLPLAN 14
9.2 REQUIREMENTS 14
10.0 EMISSIONS 15
10.1 GENERAL 15
10.2 EMISSIONS FROM DIESEL POWERED ENGINES 15
11.0 NOISE SUPRESSION 15
11.1 GENERAL 15
11.2 NOISE SUPPRESSION PLAN 16
11.3 NOISE LIMITS AND SUPPRESSION REQUIREMENTS 16
11.4 NOISE LEVEL MEASUREMENTS 17
11.5 CONTINUNEDNOISEMONITORING 17
11. 6 SPECIFIC RESTRICTIONS RELATED TO MANUFACTURING ON SITE 18
12.0 ENFORCEMENT 19
12.1 CITY CONSTRUCTION MITIGATION OFFICER 19
12.2 CORRECTIVE ACTION 19
12.3 INSPECTION REPORTS 20
13.0 CONSTRUCTION MITIGATION COMMITTEE 20
14.0 APPEAL PROCESS 20
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APPENDICES
A—Required Project Sign
B—Haul Route Map
C—Noise Suppression Plan, Techniques and Equipment
D—Smuggler Mountain Superfund Site Map
E—Core and Central Resort Area Map
F—Encroachment Zone Map
G—Stormwater Pollution Plan Requirements
H—Construction Waste Management Plan
I—Holiday Season Dates
1.0 GENERAL
1.1 PURPOSE
The purpose of this Construction Management Plan Manual is to provide a consistent policy under which
certain physical aspects of construction management will be implemented. The elements contained in this
document are related to the development process. It is intended that they apply to both public and private
work designated herein.
These standards cannot anticipate all situations. They are intended to assist,but not to substitute for
competent work by design and construction professionals. The City of Aspen does not intend to limit any
innovative or creative efforts that could result in better quality, greater cost savings, or both. Any proposed
departure from the manual will be judged on the likelihood that such variance will produce a comparable
result, adequate for the user and City resident over the duration of the improvement/project.
If the project changes ownership or contracting services change, the City Engineering Department must be
notified, and must agree to comply with an approved CMP in writing. Any departure from the approved
CMP must be submitted in writing and approved by the City Engineer. The approved construction
management plan must be kept onsite.
1.2 APPLICABILITY
This manual shall govern the construction and development of all public and private construction projects in
the City of Aspen. These regulations shall apply to all commercial, industrial, residential, and mixed use
developments which disturb 1000 SF or greater or require demolition, improvement, or renovation(interior
and/or exterior) of 400 SF or greater within any twelve-month period. Additionally
1.3 DEFINITIONS AND TERMS
Construction Management Plan—A Construction Management Plan is a combination of diagrams,
documents, drawings, and specifications that clearly define the steps that will be taken to
demonstrate how the impacts to the community will be minimized. How the impacts associated
with any construction project will be managed. Herein described as "Plan"throughout the
remainder of this policy.
Construction Mitigation Officer—An appointed employee of the City of Aspen whose charge is
to ensure that all aspects of a Construction Management Plan are followed, and to further ensure
that the impacts associated with construction activities within the City of Aspen are effectively
managed and impacts associated with those projects are the least necessary to accomplish the
project.
Disturbance Area—A portion of land where topsoil or native soils have been removed for
purposes of construction(development).
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Best Management Practices(BMP's)—Schedules of activities,prohibitions of practices,maintenance
procedures, and other management practices to prevent or reduce the pollution of waters of the state.
BMP's also include treatment requirements,operating procedures,and practices to control site runoff,
spillage or leaks, waste disposal, or drainage from material storage.
Tree Dripline and Protection Zone -Use the longest branch of the tree as a radius from the center of
the tree and make a circle. The circle is then defined as the Drip line and thus is the tree protection
zone.
Final Stabilization — Uniform vegetative cover has been established with a density of at least 70
percent of pre-disturbed levels.
Major Impact: Major projects as defined by the Urban Runoff Management Plan(URMP).
Moderate Impact: Minor project as defined by the URMP and located in the CRA.
Minor Impact: Minor project as defined by the URMP and located outside of the CRA.
URMP Triggers can be found in Table 1.1 of the URMP. A link to the table can be found at:
http://www.aspenpitkin.com/Portals/O/docs/Chapter%201.pdf
1.4 REFRENCES
A. City of Aspen Construction and Mitigation Standards for Work in the Public Rights-of-
Way
B. City of Aspen Municipal Code Titles 8.56, 13, 21, 26, 28 and 29
C. City of Aspen Ordinance 35
D. Manual on Uniform Traffic Control Devices for Streets and Highways — Most recent
edition
E. Colorado Department of Public Safety General Permit Part IB
F. Colorado Department of Transportation M&S construction standards
G. Colorado Department of Public Health and Environment—Air Pollution Control Division
2.0 PROJECT LOCATION
2.1 DISTURBANCE AREA
Soil disturbance shall be kept to a minimum. Construction staging and phasing shall
occur,where applicable,to minimize soil disturbance time.
Scaffold setup only. Soils will not be disturbed.No excavation
2.2 LOCATION
Please see CMP vicinity map and plan per drawing labeled"CMP"
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2.3 DESCRIPTION
This project has been in progress during the summer months per the last several years. One portion
of the existing building has been selected for the summer work. A perimeter of work is established
with caution safety and circulation patterns for pedestrian access and then scaffold is erected within
the caution area. The existing siding is removed, the substrate inspected,repairs are made, then the
new siding is installed. All demo materials are hauled off site and landfilled. There is no impact
on public utilities. There will be no excavation or soils stabilization required.
3.0 PROJECT DOCUMENTATION
3.1 PERMITS / OTHERDOCUMENTS
The contractor shall maintain all applicable local, state and federal licenses and permits that apply
to the construction project. Applicable permits shall be listed, described and copies of the
documents shall be attached in Plan appendices. In addition to permits all PUD's, Subdivision
Improvement Agreements, and Related City Ordinances must also be attached in the Plan
appendices.
3.2 PUBLIC NOTIFICATION
A project update shall be provided to the public on a basis no less than monthly,via website,
newspaper, on-site notices, or other accepted means of notification(per request of the City of
Aspen). The first public notification shall occur no later than 10 days prior to construction.
The update shall include a description of the current project phase, list any traffic and/or
pedestrian concerns, and describe hauling/staging operations. Additionally it shall include
information of the kinds of equipment, expected noise levels and durations of loud work.
Communication with neighbors can prevent complaints from arising, and resolve concerns
before there is a problem. Provide a phone number where the foreman can be reached prior to
the start of the job.
The above notification shall specifically be distributed to neighbors located within 300 feet of the
project property.
The Plan shall designate a project representative, date, and time for a required preconstruction
meeting. The purpose of the meeting is to discuss the project and summarize the project specific
Construction Management Plan. The contractor and subcontractors are required to attend the
meeting. Utility personnel, applicable City departments, the Roaring Fork Transit Authority,
neighboring property owners, and the Aspen School District shall also be notified.
3.3 PROJECT SIGN
A project sign shall be constructed and posted that includes the items shown in Appendix A:
Required Construction Sign.
The sign shall be posted in a location where it is readable from the street or driveway and
shall meet criteria in City Municipal Code 26.510.030B4.
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3.4 CONTACT DESIGNATION
The Plan shall have a contact list with associated phone numbers located at the front of the
document. The list will include: the owner, contractor appointed overall site supervisor, a state
certified safety officer, a state certified traffic control officer, and a state certified erosion control
representative.
This project will not require a state certified safety officer, a state certified traffic control officer,
or a state certified erosion control representative.
Other information shall include city and county phone numbers, fire department,police department,
Roaring Fork Transit Authority(RFTA), school district, and all applicable utility company contact
information. The contact list should include hospital contact information and the Emergency 911
reminder.
4.0 PROJECT IMPLEMENTATION
4.1 DATES OF CONSTRUCTION
Dates of construction shall be specified in the Plan.
The dates of construction will be 8 weeks after the permit is issued.
NO work will be performed within City ROW.
4.2 HOURS OF CONSTRUCTION
Construction hours shall be limited to 7:30am—5:30pm Monday through Friday and 9am—5pm
th
on Saturday.No construction is permitted on Sundays, 4 of July day and/or weekend if it falls
on a Friday or Monday, Memorial Day and Labor Day weekends, Thanksgiving Day, Christmas
Day,New Years Day.
During Presidents Day:
• Projects located in the Central Resort Area(CRA) are not permitted to work on any exterior
elements,however interior work may be permitted with prior approval.
• Projects outside the CRA will be permitted to work.
During the Christmas week(12/26-12/31):
• Projects located in the Central Resort Area(CRA) are not permitted to work on any exterior
elements,however interior work may be permitted with prior approval.
• Projects outside the CRA will be permitted to work.
During Holiday Season:
❑ Holiday Season is defined as the days of the week leading up to Christmas until New Year's Day.
Refer to Appendix I for Holiday Season dates.
❑ Projects located in the Core are not permitted to work on any exterior elements, however interior
work will be permitted.
During the Food&Wine Festival in June (Friday thru Saturday):
• Projects located in the Central Resort Area(CRA) are not permitted to work
projects outside the CRA will be permitted to work.
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The CRA area and Core is defined in Appendix E.
Specific indoor activities during restricted periods may be permitted with approval from the City of
Aspen Engineering Depaitiuent; specific conditions will be applied to each project separately.
During the off-season 24 hour a day interior work may be permitted within the CRA, the applicant
must present a work plan to the City of Aspen Engineering Department and the plan must be
approved prior to working outside of the normal construction hours.
Additional restrictions on construction hours and encroachments will be applied for Aspen Special
Events. Examples of events that will require additional restrictions include the USA Pro Cycling
Challenge and the Farmer's Market.
Additional restrictions on construction hours will also be applied based on the project's specific
impacts on adjoining properties. This includes limiting work during sales events (for a maximum of
two sales events per year),maintaining site lines to these businesses, and providing signage on the
construction site advertising the adjacent business. For example, if an adjoining business has an
event(such as a semiannual sale)the project will accommodate this adjoining business to ensure the
construction activities do no adversely affect that business's event.
4.3 SEQUENCE (PHASING) OF CONSTRUCTION
The construction schedule is as follows:
Week 1 will be mobilization, tree dripline mitigation, tree protection and scaffold
erection
Weeks 2-7 will be removal and replacement of siding materials
Week 8 will be punch list, and demobilization
4.4 ADJOINING PROPERTIES
No person shall excavate on land close enough to a property line to endanger any adjacent public
street, sidewalk, and alley, other public or private property, or easement, without supporting and
protecting the property from any damage that might result from construction operations.
No adjoining properties will be affected. The site is contained.
4.5 PROJECT FENCING
The project is too small to warrant fencing. The multi-family units are occupied and fencing will
impede the access to the units.
4.6 PUBLIC HEALTH AND WELFARE
All construction projects located within the City of Aspen shall uphold utmost respect to
public health and welfare and be reflected in prepared Plan.
4.7 NATURAL ENVIRONMENT
Project construction shall be oriented to minimize harm to all aspects of the City of Aspen's
natural environment. All tree and natural resource protection measures must be identified in the
Plan and in place prior to the commencement of any construction or demolition activities. Refer
to section 13.20.020b of the Municipal Code for tree protection and removal requirements and
process.
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BUILDING DEPARTMENT
The Plan must contain a site map showing exact tree protection fence location and accurate tree
driplines (refer to Section 1.3 for dripline definition).
Proposed projects should be consistent with the character of existing land use in the
surrounding area.
Tree trunks will be protected with safety fencing.
No scaffold will be set in the dripline area.
5.0 SITE AND RIGHT OF WAY MANAGEMENT
5.1 RIGHT OF WAY MANAGEMENT PLAN
No ROW will be used or impeded.
5.2 EMERGENCY VEHICLE ACCESS AND ORDINANCE35
The contractor shall maintain continuous emergency vehicle access, on and around site, including
but not limited to police, fire, and ambulance services. This includes projects adjacent to roads
and alleys.
5.3 CONSTRUCTION PARKING DETAILS
Specific construction parking spaces/areas may be requested for use by craftsman, subcontractors,
and contractors involved in the site construction process. Prior to the City allowing for
construction parking spaces,the project must demonstrate that it has minimized the amount of
vehicles traveling to the site. This will be demonstrated through Traffic Demand Management
(TDM)Plan. A site's TDM plan will consist of the following:
Minor Impact—Select one or more of the following
Customized Program—This option allows for the project to propose a measure not listed
above. If this option is chosen, a narrative should appear below and must include the
following information for staff review:
*Two Parking spaces allotted by owner
*Crews will carpool no less than three workers per truck
*enforcement by general contractor
After demonstrating that the project has minimized the amount of vehicles traveling to the site,
through the use of a TDM(which includes the measures above),the City will allow minimal onsite
parking
No construction parking will be permitted within the free two-hour residential parking areas without a
valid permit.
5.4 STAGING AREAS
The staging area is on the north side of the parking areas. Deliveries will be limited to one per
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week without blocking access to neighboring properties.
The number of will be less than 30 minutes.
5.5 RIGHT OF WAY LIMITATIONS
• This project has no limitations in the Right of Way
• Location: Depending on location,there will be limitations on the use of the ROW. The core area in
particular has on season restrictions. Refer to Section 5.5 (c).
• Size: -this project has minimal size parameters that will not encroach day to day or emergency access.
• Safety: The encroachment must accommodate pedestrians. Conflict between pedestrians and
construction traffic must be minimized. Additionally, all encroachments shall ensure sight distances of
35 feet from the intersection. There must be no overhead hazards (crane swing, etc...) and there must be
adequate room for Emergency Response.
• Schedule: Aspen has many re-occurring special events scheduled throughout the year. Some
encroachments may be limited or not approved based on impacts to these events. Holidays and special
events that affect ROW closures in the core area include,but may not be limited to: Food and Wine (mid
June),USA Pro Cycling Challenge (mid August), Saturday Farmer's Market(mid June thru mid
October),Holiday/Christmas Week and the July 4th Parade.
• Aesthetics: Consideration should be given to the aesthetics,public information, and signage for adjacent
businesses, site barricades, fencing, enclosed walkways etc. can be more than barren plywood walls.
Whether its artwork, information about the project or for local businesses there is an opportunity to
minimize the aesthetic impact.
5.6 SITE PLAN
As specified in Section 5.1, construction trailer,job materials storage, portable restrooms, waste
management and recycling container locations shall be clearly designated on the project site plan.
Loose job material storage is not allowed in ROW under any circumstance.
Please see plan marked"CMP"
The City of Aspen Engineering Department strongly recommends job trailer,waste
management containers, and portable restrooms be stored on private property and not
within City ROW.
All job trailers, waste management containers, and portable restrooms will be contained on private
property
No excavation necessary.
No cranes necessary.
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The City of Aspen requires recycling of construction materials. In instances where recycling
containers cannot be accommodated onsite, the City Engineering Department will consider locating
recycling containers within public ROW where feasible. The encroachment permit fee will be
waived if it pertains to recycling containers. If at any time such a container is not being used for
recycling operations, the property owner will be responsible to pay at least three Months calculated
land lease fee.
No recycling containers in the public ROW
A wood recycling container will be available.
5.7 WASTE MANAGEMENT
The City of Aspen requires recycling of materials,both conventional and construction related,
according to this document and City of Aspen Municipal Code
Title 12. A waste management plan must be submitted to the City prior to beginning demolition
or construction. Recycling requirements included in this section do not supersede project
specific Building Code requirements. Refer to Appendix H for the waste management plan
requirements.
Project site conventional recycling of co-mingled materials (plastics #1-#7, tin, aluminum, and
glass), and cardboard must have an assigned space/area and be separated on-site during the
project. Sites must comply with Colorado and Aspen landfill bans, i.e. no disposal of electronic
waste, fluorescent light bulbs,hazardous waste or yard waste. These materials may not be
disposed of in the trash.
During the demolition phase of a project, deconstruction related activities are required(recycling
and/or salvaging of material such as wood products, drywall, flooring, etc.). Concrete and scrap
metals must be sorted and kept separate on-site and must have an assigned space/area.
6.0 TRAFFIC CONTROL
6.1 Traffic control will not be necessary on this site
6.2 Haul Routes are listed on the plan marked "CMP"
6.3 Construction vehicles will only be pickup trucks
6.4 Maximum delivery vehicles will be limited to one at a time which will be
the siding deliveries
6.5 A preliminary Traffic Control Plan should not be necessary per City
Engineer.
7.0 PEDISTRIAN PROTECTION
7.1 GENERAL
The Plan shall comply with pedestrian safety per City code 21.04.060,
MUTCD Chapter 6D,the Americans with Disability Act,and IBC Chapter 33.
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8.0 SEDIMENT AND EROSION
8.1 There will be less than 1000 feet of disturbance and no soils shall be disturbed, excavated,
moved, or removed.
9.0 FUGITIVE DUST CONTROL
9.1 FUGITIVE DUSTCONTROL PLAN
All projects that result in fugitive dust emissions must submit a fugitive dust control plan
and file an application for a construction permit with the Colorado Department of Public
Health and Environment. The approval of a Dust Prevention and Control Plan does not
relieve the owner or contractors of the of the responsibility to implement whatever
additional measures may be required by the City Engineer to properly prevent and control
dust.
9.2 Any dust emitted from the cutting of materials will be captured with the use of
vacuums during cutting. No dust from soils considering none will be disturbed.
10.0 EMISSIONS
10.1 GENERAL
All vehicles and equipment used on site will be properly maintained such that the engines
will function within manufacture's standards or parameters.
10.2 EMISSIONS FROM DIESEL POWERED ENGINES
Emissions from diesel engines operated within the City of Aspen shall be of a shade or
density no darker than 40% opacity, except for starting motion no longer than 10
seconds or for stationary operation not exceeding 10 seconds.
11.0 NOISE SUPRESSION
11.1 GENERAL
The noise limit for construction is measured at the property line of the construction site. All
construction equipment shall be adequately muffled and maintained to minimize project
noise.
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BUILDING DEPARTMENT
11.2 NOISE SUPPRESSION PLAN
Each site must include information on noise blocking methods, techniques, and common
equipment and activities that require noise suppression(Refer to Appendix C)to meet the
decibel limits in the following section. Major impact projects that include reinforced earth
retention are required to have a sound engineer/consultant model the site plans and insert
noise sources and specify noise mitigation measures to see how noise levels will be reduced.
The models should show the anticipated noise levels at various locations surrounding the
project and can take into account a variety of proposed mitigation measures.
11.3 NOISE LIMITS AND SUPPRESSION REQUIREMENTS
Projects are limited to 70 decibels (dB) at the property line during the summer on
season.
❑ In addition to the decibel limit listed above,projects located on the Mall will be
limited to 70 decibels (dB) at the property line during the winter on season.
❑ All other times projects will be limited to 80 decibels (80dB) at the property line.
On Season Summer Time Frame: June 1st thru Labor Day On Season Winter Time Frame:
November 15th thru March 31 st
Allowances of an additional 10 dB from the limits above will be made for short durations.
However under no circumstance can the decibel limit exceed 80 dB at the property line.
Allowance for an excess noise exception from the above limits will be reviewed by
the City Engineer. Criteria for the exemption include:
❑ Where it is in the interest of public safety
❑ Public infrastructure work within the Right of Way
❑ Other activities within the Right of Way where there is no other reasonable alternative
❑ Short duration residential roofing repair projects
Work associated with any allowances described above will not be permitted to start before
9am on weekdays and will not be permitted on Saturdays.
Sites will be required to operate equipment in accordance with manufacturer's specifications
and with all standard manufacturers' mufflers and noise-reducing equipment in use and in
properly operating condition. The use of radios on the site before 8:00 am is not allowed.
Sites may be required to move portable loud equipment including generators, compressors,
and cement mixers to different sides of the property to reduce impacts on individual
neighbors.
Sites are required to post notices to inform workers, including sub-contractors, about the
basic noise requirements, as well as specific noise restrictions, to the project.
Appendix C includes recommended noise suppression methods.
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BUILDING DEPARTMENT
11.4 NOISE LEVEL MEASUREMENTS
Noise level measurements shall be made with a sound level meter using the"A"weighting
scale set on"slow"response.
Measurements shall be taken at the property line of the site. The meters shall be used
according to manufacturer specifications.
Background noise levels may be taken for comparison with a given source for accuracy of a
measurement. Extraneous or momentary spikes in the background noise readings shall not be
used to compare with the source noise readings.
Enforcement actions will be taken if the source of the noise is greater than the permissible
levels.
11.5 CONTINUNED NOISE MONITORING
This is a minor construction site with no earth stabilization
11.6 SPECIFIC RESTRICTIONS RELATED TO MANUFACTURING ON SITE
Considering that some structures will require an increase in the level of manufacturing of
certain materials in order to complete the desired finish of the structure, additional
restrictions will be placed on those activities. The primary concern is that extending the
duration, for which neighbors are exposed to high levels of noise, could cause specific
unwanted responses. In order to reduce those risk factors to neighboring properties all
manufacturing efforts must be limited on site and when possible shall be conducted off site,
or in such a manner as to not contribute to any long term noise impacts off of the property.
Manufacturing activities that are in excess of a maximum of 80 decibels must be
accompanied by an Extended Impact Permit,this will require that the activity is enclosed
completely and limited to 90 days in duration. Air exchange/venting systems shall be
installed or otherwise supplied within the enclosure to provide a clean air source for
laborers. The enclosure must be constructed in a manner which prevents noise and dust from
escaping. This may be accomplished with the use of plastic sheeting to contain dust and a
more dense and rigid material(ply wood, foam insulation boards) erected to contain sound.
Noise levels will be measured at the property line,while facing the source of the sound, and
shall not exceed 65 decibels during working operations.
Activities will be considered manufacturing if alterations to a material that is readily
available on the market are made in order for the material to meet the needs of the end user.
An example of this would be masonry wall construction. If the all of the stone was delivered
as a rough cut product to the site, and each of the stones were to be cut square and fit into
place. In this example the stone cutting is considered the manufacturing portion of the
masonry wall, and should be conducted off site. This would allow the stones to be cut
square and to the appropriate dimensions and additional work to fit the stones would be
permitted on site.
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All work which requires a limited amount of additional manufacturing to achieve the desired
finish(including fitting) shall be conducted between 9am and 5pm, and shall have an
approved noise suppression plan on site,relating to the activity.
12.0 ENFORCEMENT
12.1 CITYCONSTRUCTIONMITIGATIONOFFICER
A City Construction Mitigation Officer shall be assigned to each construction project. The
City Construction Mitigation Officer will complete random site visits to determine if the
project is following approved Plan and City requirements. The officer is not intended to
take the place of a City of Aspen building inspector.
12.2 CORRECTIVEACTION
The City of Aspen will enforce construction mitigation corrections as follows:
1. The first corrective action is a verbal warning and explanation of the violation with a
timeframe for completion.
2. The second corrective action is a written warning or correction notice with timeframe for
compliance.
3. Third and final notice is a"Stop Work Order"(red tag). If a stop work order is issued,no
more work can be completed until the violation is corrected.
4. The City may forgo steps one and two as outlined above and go directly to the"Stop
Work Order"and or a summons and compliant may be issued for violations under the
following circumstances:
• Work without a permit
• Work that is endangering Public Safety
• Work that is endangering Public Health including work that may affect water quality.
• Work on holidays or Sundays (unless the site received an exemption to work during
these times)
The owner and general contractor are responsible for assuring compliance and both will be
charged by summons and complaint in municipal court when necessary. This applies even if
a sub-contractor violates the construction mitigation rules,Failure to correct violations
and/or any threat to public safety could subject the owner, contractor or both to a maximum
penalty of up to a year in jail and/or a fine of up to $2,650 for each violation. Each day a
violation continues is a separate offense determined by the municipal court.
12.3 INSPECTION REPORTS
The Construction Mitigation Officer will complete construction inspection reports. All
reports are public and will be kept in the City Engineering Department.
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13.0 CONSTRUCTION MITIGATION COMMITTEE
Projects seeking exemptions may seek an exemption from project durations, number of
encroachments. These exemptions will be reviewed by the Construction Mitigation
Committee. The committee consists of representatives from the Engineering, Parking and
Building departments. If an exemption is granted then the project will be subject to the
exemption fees as outlined in Title 2.
Considerations for exemptions include impact of exemption on adjacent properties, duration
of exemption and season that exemption is being requested.
14.0 APPEAL PROCESS
Projects may appeal the decision of the Construction Mitigation Committee and/or the City
Engineer. All appeal will be forwarded to the City Manager or their designee. If the appeal
is approved and results in an exemption,then the project will be subject to the exemption
fees as outlined in Title 2.
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BUILDING DEPARTMENT
100
hiKE SHO RT
BUILDING PERMIT #
Ath e n Build e rs
Genera iContra ctor
Marc Tergeoglou
970-618 -8003
24 Hour Emergency Contact # 911
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B — Haul Route Map
SEE DRAWING "CMP"
C — Noise Suppression Plan, Techniques and
Equipment
Noise Blocking Methods
Contractors shall require all subcontractors and vendors to use:
❑ "Residential"grade combustion engine exhaust silencers
❑ Electrical vs. pneumatic hand power tools
❑ Hydraulic vs. air powered rock drills
❑ "Silenced"pile drivers vs. Diesel pile drivers
Temporary Noise Barrier Materials:
Temporary barriers shall be constructed of 3/4-inch Medium Density Overlay(MDO)
plywood sheeting, or other material of equivalent utility and appearance having a surface
weight of 2 pounds per square foot or greater. The temporary barriers shall be lined on one
side with glass fiber, mineral wool, or other similar noise curtain type noise-absorbing
material at least 2-inches. The materials used for temporary barriers shall be sufficient to last
through the duration of the construction project, and shall be maintained in good repair.
Prefabricated acoustic barriers are available from various vendors. An equivalent barrier
design can be submitted in lieu of the plywood barrier described above.
Noise Control:
❑ Replace worn, loose, or unbalanced machine parts that cause vibration.
❑ Keep machine parts well lubricated to reduce friction.
❑ Acoustical enclosures and barriers around generators
❑ Sound absorbing material and vibration isolation systems on hand tools
❑ Shields, shrouds, or intake and exhaust mufflers.
❑ Noise-deadening material to line hoppers, conveyor transfer points, storage bins, or
chutes.
❑ Noise barriers using materials consistent with the Temporary Noise Barrier Materials
Section.
❑ Noise curtains
❑ Plywood with concrete blankets at the height of the equipment and that it surrounds the
activity such that it directs noise up more than out from the property.
❑ Portable three sided enclosures made out of plywood to move with the activity such as jack
hammering.
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BUILDING DEPARTMENT
❑ Internal combustion engines are to be fitted with a suitable muffler in good repair.
❑ Noisy equipment such as cement mixers should be placed on the site to maximize the
distance from neighboring houses and/or rotate location so as to not impact just one neighbor.
Noise levels drop quickly with distance from the source.
❑ All equipment should be properly maintained, with special attention to mufflers and
other noise control devices.❑ Between work periods,builders are required by city ordinance
to shut down machines such as backhoes,bobcats, loaders and generators.
❑ All vehicular movements to and from the site must only be made during the
scheduled normal working hours. This includes off-site noise that is associated with a
specific project such as staging of concrete trucks.
RECEIVED
2/20/2019
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BUILDING DEPARTMENT
G — Stormwater Pollution
The purpose of this chapter is to provide requirements and guidance for selecting and
implementing Best Management Practices (BMPs) that will eliminate or reduce the discharge of
pollutants from construction and other land-disturbing activities to local waters. The City of
Aspen Engineering Department is the administrative authority for stormwater management and
erosion prevention and sediment control on construction sites within the City's jurisdiction. By
policy, Aspen's requirements for stormwater management during construction are consistent
with those of the Colorado Department of Public Health and Environment's (CDPHE)
Construction General Permit. The CDPHE Construction General Permit requires a stormwater
management plan (SWMP)for development disturbing greater than one acre of land. However,
Aspen requires a Construction SWMP detailing pollution prevention and erosion prevention
and sediment control measures to be installed for projects that exceed 1000 square feet of
soil disturbance, not just those that disturb greater than one acre. Wherever the City of Aspen
and the CDHPE Construction General Permit requirements are in conflict, the more restrictive
requirements should be applied.
The regulations and guidelines stated in this chapter incorporate information from a variety of
sources including:
❑ The United States Environmental Protection Agency (EPA),
❑ State of Colorado/Colorado Department of Public Health and the Environment (CDPHE),
❑ Urban Drainage and Flood Control District (UDFCD), and
❑ Northwest Colorado Council of Governments (NWCCOG).
It is important to understand that these regulations are subject to change and/or alterations. For
the most up to date copy please contact the City of Aspen Engineering Department.
RECEIVED
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BUILDING DEPARTMENT
Stormwater Management During Construction
1 .1 PURPOSE
Some construction activities and materials have the potential to pollute our streams, rivers, and
lakes if transported during storms or snowmelt. When construction disturbs land, the soil is more
easily eroded during rainfall, snowmelt, and wind events. Eroded soil, referred to as sediment, is
the greatest pollutant to rivers in Colorado and Aspen. Sediment endangers water resources by
reducing water quality and causing the siltation of aquatic habitat for fish and other desirable
species. Other pollutants, such as petroleum products, metals, and nutrients, easily attach to
soil making sediment even more toxic. Eroded soil also necessitates the cleaning and/or repair
of sewers and ditches and the dredging of water bodies. Therefore clearing, grading, and
vehicle tracking during construction creates the need for erosion prevention and sediment
control on construction sites.
Pollutants other than sediment, such as concrete, solvents, oil, grease and metals, also cause
degradation of water quality in receiving streams, and therefore must also be prevented or
reduced through construction site stormwater management practices.
The City of Aspen requires compliance with the criteria in this chapter in order to
eliminate or reduce the discharge of pollutants in stormwater runoff, and prohibits the
discharge of pollutants from construction sites to the City's stormwater system. These
criteria should be followed from start of earth disturbance until final landscaping and stormwater
quality measures are effectively in place and accepted by the City. The goal of these
requirements is to decrease the amount of pollutants entering the stormwater system from
construction and other land disturbing activities.
The following erosion prevention, sediment control, and pollution prevention measures are
designed to safeguard persons, protect property, minimize water quality and other
environmental impacts, and promote the public welfare by guiding, regulating, and assisting the
design, construction, use, and maintenance of any development or activity which disturbs or
breaks the topsoil or results in the movement of earth on land greater than 1000 square
feet in the City of Aspen, Colorado.
1 .11 General Requirements
This project is claiming exemption "h"
h. Where the owner certifies in writing to the City of Aspen and the City of Aspen agrees in
writing that the planned work and the final structures or topographical changes will not result in,
or contribute to, soil erosion or sediment discharges to any waterway or irrigation ditch and will
not interfere with any existing drainage course or waterway in such a manner as to cause
damage to any adjacent property, or result in the deposition of debris or sediment on any public
right-of-way, will not present any hazard to any persons or property, and will have no
detrimental influence upon the public welfare, or upon other properties in the watershed.
A Construction Stormwater Management Plan (Construction SWMP) must be developed VED
before a project begins that identifies pollution prevention measures and erosion prevention
and sediment control (EPSC) measures that are appropriate for the actual site cooOi26rjs21J 9
construction plans for each site — generic plans will not be approved.
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The Construction SWMP shall contain a narrative report as well as site plan maps for each phase of
the project. The appropriate schedule of implementation shall be identified as well as detailed plans
shown on plan sheets with appropriate contours for each phase of the project that will minimize
pollution, erosion, and sediment transport.
The Construction SWMP shall be submitted to the City of Aspen as part of the Construction
Mitigation Plan (CMP) and along with the grading and drainage plans in order to obtain a building
or landscape and grading permit. Plans for grading and erosion control should be considered in the
early stages of site planning and drainage design. The Construction SWMP may have to be
modified at the time a final site development plan is prepared in order to better address the site
conditions as the plan changes. This modified plan, the final Construction SWMP, must be
approved by the City of Aspen before ground-breaking activities can occur.
EPSC measures must be designed according to size, slope, and soil type of disturbed drainage
areas in order to prevent erosion and to capture sediment. Potential sources of pollution that might
affect quality of stormwater discharges from the site, and practices that will be implemented to
prevent that pollution, must be identified and described as part of the Construction SWMP. In
addition, sites discharging directly to waters of the state or the City's stormwater system might be
required to meet stricter requirements as determined by the City Engineer or City Stormwater
Manager.
Implementation of the Construction SWMP (i.e., installation of measures) begins when construction
begins, before the initial clearing, grubbing, and grading operations, since these activities can usually
increase erosion potential on the site. Implementation and maintenance of pollution prevention
measures and EPSC measures are the responsibility of the permit holder and the project/property
owner. Because site conditions will affect the suitability and effectiveness of pollution prevention and
EPSC measures, the SWMP is a dynamic document that should be referred to frequently, amended
and updated as necessary, and kept on site available for review by City of Aspen staff upon request.
The City reserves the right to require the permit holder and/or property owner to develop and
implement additional measures to prevent and control pollution as needed.
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BUILDING DEPARTMENT
Pollution Prevention
Pollution prevention for construction within the City of Aspen requires compliance with the
following criteria:
1. Develop Construction SWMP -The Construction SWMP must identify potential
sources of pollution that may reasonably be expected to affect the quality of
stormwater discharging from the site.
2. Practice Good Housekeeping -The Construction SWMP must describe standard
operating procedures and practices that will be implemented to prevent the release
of pollutants to the stormwater system from construction activities.
a. Perform activities in a manner to keep potential pollutants from coming into
contact with stormwater.
b. Prevent spills and leaks (i.e. hydraulic fluid from leaky vehicles or equipment)
c. Use phasing principals to limit areas of disturbance.
3. Contain Materials and Waste—Areas used for staging of construction activities and
the storage of soil, chemicals, petroleum-based products and waste materials,
including solid and liquid waste, shall be designed to prevent discharge of pollutants
in the runoff from the construction site.
a. Store construction, building, and waste materials in designated areas, protected
from rainfall and contact with stormwater run-on and runoff.
b. Dispose of all construction waste in designated areas (e.g. concrete may only be
disposed of in a designated concrete wash-out area), and keep stormwater from
flowing onto or off of these areas.
c. Properly clean and dispose of spilled materials.
4. Dewatering — If it is determined that site dewatering will be required, the permit
holder/ and or property owner must obtain a Construction Dewatering Permit for the
CDPHE division of water resources.
Erosion Prevention and Sediment Control
Erosion prevention and sediment control for construction within the City of Aspen requires
compliance with the following criteria:
1. Develop Construction SWMP—The Construction SWMP plan must demonstrate
how stormwater, erosion, and sediment will be handled throughout construction.
2. Control Site Perimeter— Construction activities and their impacts must be
controlled within the limits of the site.
i. Delineate the site perimeter on the plans and in the field to prevent disturbing
areas outside of the project limits.
ii. Divert upstream run-on safely around or through the construction project.
Diversions must not cause downstream property damage and cannot be
diverted into another watershed.
iii. Construction vehicles and equipment may enter and exit the site at only one
designated access point. This exit must be stabilized with gravel or other
appropriate material throughout the duration of the project.
3. Minimize Disturbed Areas— Construction activities must be scheduled in correct
sequences to minimize the total amount of exposed soil at any given time.
a. Only clear land which will be actively under construction in the near term (e.g.
within the next 1-2 months).
b. Minimize new land disturbance during the spring runoff/snow melt season.
c. Avoid clearing or disturbing sensitive areas, such as steep slopes and natural
waterways, where site improvements will not be constructed or are not
necessary.
4. Stabilize Disturbed Areas — Disturbed areas must be permanently or temporarily
stabilized as soon as possible, but no later than 14 days after last worked,,wi„nrNED
active construction is not occurring on that portion of the site. Disturbed ar6a :rn
th
be stabilized by November 15 of each year to minimize erosion and sedir 0/2019
transport that occurs during spring snow melt.
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BUILDING DEPARTMENT
5. Protect Slopes and Channels— Concentrated stormwater flows shall be avoided or
the conveyance system shall be protected sufficiently to prevent significant erosion.
a. Safely convey runoff from the top of the slope and stabilize disturbed slopes as
quickly as possible.
b. Avoid disturbing natural channels.
c. Ensure the runoff velocity caused by project does not erode channel bottoms.
6. Install and Maintain EPSC Measures —All sites must minimize pollution potential
by installing and maintaining erosion prevention and sediment control measures
throughout the duration of any project.
a. Erosion prevention measures are those BMPs used to limit erosion of soil from
disturbed areas on the site. Erosion prevention measures are required for all
disturbed areas. Examples include: Contour Tracking, Rolled Erosion Control
Products, Hydro Mulching and similar activities.
b. Sediment control measures are those BMPs the limit the transport of sediment
off-site or downstream of disturbed areas. Sediment control measures are
required for all disturbed areas. The most commonly used sediment containment
is silt fencing.
c. Use non-structural and structural best management practices (BMPs) described
in this chapter.
d. All sites must be inspected regularly by a representative from the project to
document the condition and effectiveness of BMPs.
7. Retain Sediment -Sediment control measures are required at all points where
stormwater leaves the site as concentrated flow and at any other points where
sediment has the potential to leave the site. Sediment-laden runoff will be
considered a violation of City of Aspen code and can receive fines up to $1000
per day that the site is in violation.
Best Management Practices
Best Management Practices (BMPs) are activities or controls that are implemented to reduce the
potential of discharging pollutants to the stormwater system and include pollution prevention
measures and EPSC measures.
2.1 Permit and Construction Process
Step 1 — Develop Construction SWMP
The owner or the contractor should secure the services of a professional engineer
knowledgeable in construction management practices and the City of Aspen requirements for
stormwater management during construction to develop the Construction SWMP. The SWMP
must be submitted as a portion of the CMP along with the building permit application. The
Construction SWMP will be reviewed by the City and its comments will need to be addressed
before a building permit will be issued.
Projects that disturb greater than one acre of land will also need to apply for a Construction
General Permit with the CDPHE. This application also requires the submittal of a SWMP. The
Construction SWMP developed for the purposes of construction within the City of Aspen should
be adequate to submit with the Construction General Permit Application.
The Construction SWMP shall consist of a written narrative report and a site plan map
describing the erosion prevention and sediment control measures to be implemented at the site.
Narrative Report
The narrative report must contain, or refer to, the drainage report for the site and should contain,
at the minimum, the following:
1. Contact Information —The names, addresses, email addresses and phone numbers of_tloc Li ILNt/project/property owner, the applicant or permit holder, the professional engineer prepare
the Construction SWMP, and the site person that will be responsible for implementation of
the Construction SWMP. 2/20/20190
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2. Project Description -A brief description of the nature and purpose of the land disturbing
activity, the total area of the site, the area of disturbance involved, and project location
including township, range, section, and quarter-section, or the latitude and longitude, of the
approximate center of the project.
3. Existing Site Conditions -A description of the existing topography, vegetation, and drainage;
and a description of any water bodies or conveyances on the site.
4. Downstream/Receiving Waters -Identification of the stormwater system downstream of the
site including the receiving water body (e.g. Roaring Fork River).
5. Adjacent Areas -A description of neighboring areas including streams, lakes, residential
areas, roads, etc., which might be affected by the land disturbance.
6. Soils -A brief description of the soils on the site including information on soil type and
character.
7. Historic Conditions—Areas of historic contamination (natural, mining, industrial or
agricultural) should be described.
8. Areas and Volumes -An estimate of the quantity (in cubic yards) of excavation and fill
involved, and the surface area (in square feet and acres) of the proposed disturbance.
9. Pollution Prevention Measures —A description of the potential sources of pollution from
construction activities and materials and the methods described in this chapter which will be
used to prevent pollution to the stormwater system. Descriptions
10. Timing of Construction Activity—A schedule indicating the anticipated starting and
completion time periods of the site grading and/or construction sequence, including the
installation and removal time periods of erosion and sediment control measures, and the
time of exposure of each area prior to the installation of temporary EPSC measures.
11. EPSC Measures -A description of the methods described in this chapter which will be used
to prevent erosion and control sediment on the site. Descriptions must be site specific.
Generic or general statements are not acceptable.
12. Permanent Stabilization -A brief description, including specifications and the landscaping
plan, of how the site will be stabilized after construction is completed.
13. Stormwater Management Considerations—A description of how stormwater runoff from and
through the site will be handled during construction. Provide a brief description of the post-
construction stormwater quality control measures to be included as a part of the site
development.
14. Inspection and Maintenance -A description of how each EPSC and pollution prevention
measure will be maintained and a statement that the site will be inspected at least once
every 14 calendar days and 24 hours before / after forecasted storm events to determine
SWMP accuracy and effectiveness; proper installation, location, and condition of EPSC
measures; and implementation of construction activity pollution prevention measures. An
alternative of inspecting every 7 calendar days regardless of precipitation events or
forecasts may also be used. Inspection and maintenance reports should be completed and
kept on site following each inspection and made available to City of Aspen staff upon
request. Any loss of sediment from the site should be noted and kept in file with these
reports, including date and estimated amount of sediment loss and what activities were
performed to ensure that sediment loss would not occur again.
15. Calculations -Any calculations made for the design of such items as sediment basins,
diversions, or waterways; and calculations for runoff and stormwater detention basin design
(if applicable).
16. Other information or data as may be reasonably required by the City of Aspen.
17. The following note -"This Construction Stormwater Management Plan has been placed in
the City of Aspen file for this project, and appears to fulfill the City of Aspen criteria for the
management of construction activities and associated erosion and sedimentation controls. I
understand that additional control measures may be needed if unforeseen pollutant
transport problems are determined by City of Aspen to occur during this project or if the
submitted plan does not function as intended. The requirements of this plan shall run with
the land and be the obligation of the owner until such time as the project cover h
plan is properly completed, modified or voided." � � ���
2/20/2019
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18. Signature page for owner/developer acknowledging the review and acceptance of
responsibility, a statement by the Professional Engineer acknowledging responsibility for the
preparation of the SWMP, and a signature of the site representative that will be responsible for
implementation of the SWMP in the field acknowledging that they have reviewed and agree to
implement and maintain the proposed measures as designed or altered as necessary while
meeting the intent of the design.
RECEIVED
2/20/2019
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BUILDING DEPARTMENT
19.Site Plan
A plan sheet(s) size 24"x36" that shows the location of erosion prevention and sediment control
measures with appropriate contours for each phase of the project must be submitted in addition
to the narrative report. The site plan(s) must show:
1. A general location map at a scale of 1-inch to 1,000-feet to 1-inch to 8,000-feet
indicating the general vicinity of the site location.
2. The property lines for the site on which the work will be performed.
3. The construction SWMP at a scale of 1-inch to 20-feet up to 1-inch to 200-feet with
separate sheets for each phase of site development construction.
4. Existing topography at one-or two-foot contour intervals. The map should extend a
minimum of 100-feet beyond the property line or beyond the project's soil
disturbance limits, whichever is larger.
5. Proposed topography at one-or two-foot contour intervals. The map should show
elevations, dimensions, location, extent and the slope of all proposed grading,
including building site and driveway grades.
6. Delineation of the entire area draining to the site, drainage areas within the site,
and discharge points from each drainage area.
7. Location of all existing structures and hydrologic features on the site.
8. Location of all structures and natural features on the land adjacent to the site and
within a minimum of 100 feet of the site boundary line.
9. Delineation of trees and natural feature conservation areas such as steep slopes or
natural channels.
10. Location of the storm sewer, street gutter, channel or other waters receiving storm
runoff from the site.
11. Location of all proposed structures including drainage features, paved areas,
retaining walls, cribbing, plantings and development for the site.
12. Limits of clearing and grading.
13. Location of construction entrance/exit.
14. Location of soil stockpiles -Areas designated for topsoil and subsoil storage.
15. Location of storage equipment maintenance and temporary disposal areas -Areas
designated for equipment, fuel, lubricants, chemicals and all temporary construction
waste storage. All these areas shall be cleaned out and reclaimed at end of project
and waste disposed at legal disposal sites.
16. Location of designated concrete washout and a statement that concrete washout
must occur within this location or hauled back to the batch plant.
17. Location of temporary roads designated for use during the construction period.
18. Location of temporary and permanent soil erosion control measures and sediment
control measures. Depict all EPSC measures using the standard map symbols given
in Figure C1-1. If the project will experience several phases of construction, a plan
sheet must be submitted for each phase with the appropriate contours and EPSC
measures depicted on the plan for that phase.
19. Detail drawings and specifications -Design drawings and specifications for erosion
and sediment controls, temporary diversions and all other practices used for each
phase of site development.
20. Other information or data as may be reasonably required by the City.
21. The following note: "This Construction Stormwater Management Plan has been
placed in the City of Aspen file for this project and appears to fulfill applicable erosion
control and construction management criteria. I understand that additional measures
may be required of the owner due to unforeseen erosion, sediment or other pollutant
transport off the site or if the submitted plan does not function as intended. The
requirements of this plan shall run with the land and be the obligation of the owner
until such time as the project covered by this plan is properly completed, modified or
voided". //��►►
22. Signature block for owner/developer acknowledging the review and acc �,�EiVE1>>
responsibility, a signed and stamped statement by the Professional Engineer
acknowledging responsibility for the preparation of the SWMP, and a signat2re2 (€2019
site representative that will be responsible for implementation of the SWMP in the
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field. Should the field representative change, this block should be updated with a
signature of the current site representative that will be responsible for implementation
of the SWMP.
1. Exemptions from the erosion control planning process may be considered for any of the
following by the local jurisdiction if their MS4 permit so allows; however, exempting the owner
from the preparation and submittal of a SWMP and/or from applying for a grading permit does
not exempt the owner from controlling erosion and sediment movement off the construction site:
a. Agricultural use of land.
b. Grading or an excavation below finished grade for basements, footings, retaining walls, or
other structures on single family lots not a part of a larger development or redevelopment
project and disturbing a total land surface of less than one (1) acre in size unless required
otherwise by local jurisdiction.
c. A sidewalk or driveway authorized by a valid permit.
d. Land-disturbing activities involving less than a total of one (1) acre of disturbed area.
Individual lots involving less than one (1) acre of disturbed area in a larger land use change
project shall not be considered separate development projects, but rather as a part of the
subdivision development as a whole and are not eligible for an exemption. It will be the
responsibility of the homeowner or homebuilder to conform to all requirements of the locally
approved
SWMP for the development or redevelopment. As part of any Building Permit within a
larger development for which an individual erosion control plan is not required, it is
recommended the following statement be included: "We have reviewed the Construction Storm
Water Management Plan for (subdivision name) and agree to conform to all requirements
contained therein and all erosion control requirements of the (insert name of municipality) and
the State of Colorado. We further agree to construct and maintain all erosion and sediment
control measures required on the individual lot(s) subject to this Building Permit and/or in
accordance with the provisions of the Construction Best Management Practices chapter of the
Manual published by the Urban Drainage and Flood Control District."
e. Underground utility construction including the installation, maintenance and repair of all
utilities under hard-surfaced roads, streets or sidewalks provided such land-disturbing activity is
confined to the area which is hard-surfaced and provided that runoff and erosion from soil
stockpiles are confined and will not enter the drainage system.
f. Gravel, sand, dirt or topsoil removal as authorized pursuant to approval of the Colorado Mined
Land Reclamation Board, provided said approval includes a construction activities
management, erosion and sediment control plan that meets the minimums specified.
g. Projects having a period of exposure (from time of land disturbance until permanent erosion
control measures are installed) of less than 14 days.
h. Where the owner certifies in writing to the City of Aspen and the City of Aspen agrees in
writing that the planned work and the final structures or topographical changes will not result in,
or contribute to, soil erosion or sediment discharges to any waterway or irrigation ditch and will
not interfere with any existing drainage course or waterway in such a manner as to cause
damage to any adjacent property, or result in the deposition of debris or sediment on any public
right-of-way, will not present any hazard to any persons or property, and will have no
detrimental influence upon the public welfare, or upon other properties in the watershed.
2. Variances —The City of Aspen may consider waiving or modifying any of the criteria which
are deemed inappropriate or too restrictive for site conditions by granting a variance, provided
such variance does not violate the laws of the State of Colorado or the Federal government.
Variances may be granted at the time of plan submission or request for plan revision. Variances
must be requested in accordance with the subdivision regulations and must define:
a. The criteria from which the applicant seeks a variance.
b. The justification for not complying with the criteria. RECEIVED
c. Alternate criteria or standard measures to be used in lieu of these criteria. The criteria 4 nnd�
practices specified within this section of the Manual relate to the application of specific 2019
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BUILDING DEPARTMENT
and sediment control practices. Other practices or modifications to specified practices may be
used if approved by the municipality prior to installation. Such practices must be thoroughly
described and detailed to the satisfaction of the local municipality reviewing and approving the
erosion control plan. To expedite the review and decisions on variance requests, it is suggested
that a variance request be included with, or submitted prior to, the initial SWMP submittal.
Step 3 — Project Construction — Installation, Maintenance, and Inspections
During the construction phase, the following sequence is recommended for the implementation
of the project and the SWMP:
1. During preparation of the Construction SWMP, the contractor designated a manager for the
implementation of the SWMP. This person will be responsible for implementing all permit
conditions and will communicate with City inspectors and inspectors from other agencies.
2. Install all BMPs shown on the SWMP that need to be installed in advance of proceeding with
construction, such as construction fencing and limits of disturbance, tree and other natural area
protections, construction exits, silt fences, inlet protection, etc.
3. Identify construction equipment and materials storage and maintenance areas and install
BMPs to prevent pollutant migration from them.
4. Notify the City that the site is ready for initial inspection.
5. Install any additional BMPs that are called for in the SWMP before grading begins.
a. Strip off and stockpile topsoil for reuse. Insure that soil stockpile is not located in a
drainage path, downhill of a significant drainage area, is protected from erosion and dust
migration, and that a sediment control measure is located downstream.
b. Mulch areas that will remain undisturbed for more than two weeks during the April
through September rainstorm season (e.g., stockpiles and overlot graded areas that will
remain dormant for extended period of time), or for more than a month during the
October through March period.
c. Insure that BMPs that need to be installed at different times during the project are
installed when called for in the SWMP or by the City's inspector and are in full operation
before construction activities begin in areas served by them.
d. Inspections by site Supervisor/ Professional Engineer
e. Inspections by City will occur regularly to inspect for general compliance with the
approved plan.
f. Maintenance by the permit holder/ and or property owner is required for all BMP's
regardless of the stage of construction.
g. Maintenance time frame from City
h. Enforcement from City will occur at any time when a permit holder/ and or property
owner is in violation of the SWWP. Enforcement will escalate from verbal notices of
corrective actions to stop work orders based on the number of violations or the severity
of any one single violation.
Step 4 — Project Completion — Stabilization, Re-vegetation, and CO
Re-vegetate the site as called for in the SWMP.
1. After all work has been completed in an area
a. including stabilization and re-vegetation,
b. clean out and restore any post construction BMPs that may have been used for
construction sediment controls.
After all work has been completed on site, prepare the site for a CO inspection by the City and
arrange for this inspection by scheduling online at https://www.cityofaspen.com/FormCenter/
Community-Development-7/Building-Inspection-47. Correct all deficiencies and call for follow up
inspection.
The owner or contractor needs to arrange for inspection by the local jurisdiction when the
vegetation has reached acceptable level of coverage and maturity. This could take npontkis. Er)the meantime, the owner or contractor need to inspect the site on a regular basis to'determ elV
if there are deficiencies or damage that need to be addressed. The owner is responsible Athe2019
performance of all erosion and sedimentation control installations until such time the sit '
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revegetation
is deemed acceptable and a written notice is provided to the owner by the local
jurisdiction.
Once re-vegetation has been accepted, request release of any surety, letters of credit or other
financial guarantees the local jurisdiction may have required the permit holder provide at the
time the permit is issued. A closure of the construction activities permit from the State should
also be pursued at this time.
RECEIVED
2/20/2019
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BUILDING DEPARTMENT