HomeMy WebLinkAboutFile Documents.1310 Red Butte Dr.0114.2018 (6).ARBKConstruction Management Plan
Grinspoon – Foley Residence
BRIDGE REPAIR
1310 Red Butte
City of Aspen
Revised 4/15/18
04/24/2018
Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red Butte Index
Table of Contents
2.0 PROJECT INTRODUCTION ............................................................................................................................... 1
2.1 Project Disturbance Area ............................................................................................................................... 1
2.2 Project Vicinity Map ...................................................................................................................................... 1
2.3 Project Description ........................................................................................................................................ 1
3.0 PROJECT DOCUMENTATION .......................................................................................................................... 1
3.1 Permitting..................................................................................................................................................... 1
3.2 Public Notification ........................................................................................................................................ 1
3.3 Project Sign .................................................................................................................................................. 1
3.4 Contact List .................................................................................................................................................. 1
4.0 PROJECT IMPLEMENTATION ........................................................................................................................... 2
4.1 Dates of Construction .................................................................................................................................... 2
4.2 Hours of Construction.................................................................................................................................... 2
4.3 Construction Schedule ................................................................................................................................... 2
4.4 Adjoining Properties ..................................................................................................................................... 2
4.5 Project Fencing ............................................................................................................................................. 2
4.6 Public Health and Welfare ............................................................................................................................ 2
4.7 Natural Environment ..................................................................................................................................... 2
5.0 PARKING MANAGEMENT .............................................................................................................................. 2
5.1 Parking Management .................................................................................................................................... 2
5.2 Emergency Access / Ordinance 35 ............................................................................................................... 2
5.3 Construction Parking ..................................................................................................................................... 2
5.4 Staging Areas .............................................................................................................................................. 3
5.5 Material Storage and Waste Management ..................................................................................................... 3
6.0 TRAFFIC CONTROL ......................................................................................................................................... 3
6.2 Haul Routes .................................................................................................................................................. 3
6.3 Weight and Size Limitations of Vehicles ......................................................................................................... 3
6.4 Delivery Requirements ................................................................................................................................... 3
6.5 Traffic Control Plan ....................................................................................................................................... 3
8.0 SEDIMENT AND EROSION CONTROL ............................................................................................................. 3
8.1 Storm Water Pollution Prevention Plan ............................................................................................................ 3
8.2 BMP’s for Stormwater Pollution Prevention ...................................................................................................... 4
8.3 Final Stabilization and Long-Term Stormwater Quality .................................................................................... 6
8.4 Inspection and Maintenance Procedures ......................................................................................................... 6
9.0 FUGITVE DUST CONTROL ............................................................................................................................... 6
04/24/2018
Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red Butte Index
9.1 Dust Control Plan .......................................................................................................................................... 6
10.0 EMISSIONS .................................................................................................................................................. 7
10.1 Maintenance .............................................................................................................................................. 7
10.2 Opacity ..................................................................................................................................................... 7
11.0 NOISE SUPPRESSION ................................................................................................................................... 7
11.1 General ..................................................................................................................................................... 7
11.2 Noise Suppression Plan ............................................................................................................................... 7
11.3 Equipment and Methods.............................................................................................................................. 7
Appendix A – Required Project Sign ....................................................................................................................... 8
Appendix B - Parking Plan, MAP ............................................................................................................................ 9
Appendix C – Project Vicinity and Haul Route Map....................................................................................................
Appendix D – Noise Suppression Plan .................................................................................................................. 12
Appendix E – Project Schedule ............................................................................................................................. 15
Appendix F – Project Site Plan .............................................................................................................................. 16
Appendix G - Ordinance No. 35 ......................................................................................................................... 17
Appendix H – Engine Idling ................................................................................................................................. 18
04/24/2018
Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red Butte
Page | 1
2.0 PROJECT INTRODUCTION
2.1 Project Disturbance Area
The area of disturbance for the construction is approximately 980SF with a lot size of (37,981SF).
2.2 Project Vicinity Map
See Attached Appendix C – Project Vicinity Map
2.3 Project Description
The Project consists of the REPAIR OF BRIDGE
3.0 PROJECT DOCUMENTATION
3.1 Permitting
This Construction Management Plan (CMP) is being submitted as required by the Permitting Process for the Building
Permit.
3.2 Public Notification
A minimum of 10 days prior to the start of construction, a notification letter will be mailed to all neighboring
properties with in a 300 foot radius. This letter will provide information about the project, the proposed project and
construction schedule, any potential impact to the neighborhood, and finally, an invitation to the Pre-Construction
Meeting.
Demolition is tentatively scheduled to begin on July 1st, 2015. As such, a Pre-Construction meeting will be scheduled
for June 24, 2015, 5 working days prior to the start of Construction. This meeting will summarize this CMP and give
the attendees additional information regarding the Project.
3.3 Project Sign
See Attached Appendix A, 1310 Red Butte, Project Sign.
3.4 Contact List
The following represents the currently planned Project Contacts, and Construction Team;
Owner:
Jeff Grinspoon/ Jon Foley
(773) 491-3405
jon@gomaven.com
Contractor:
KORU, Ltd.
(970) 963-0577
info@korultd.com
Site Supervisor:
Mike Simpson
(970) 379-5580
mikesimpson@korultd.com
Safety Officer:
Mike Simpson
(970) 379-5580
mikesimpson@korultd.com
Traffic Control Officer:
Mike Simpson
(970) 379-5580
mikesimpson@korultd.com
Erosion Control Representative:
Mike Simpson
(970) 379-5580
mikesimpson@korultd.com
EMERGENCY
Dial 911
Police Department
(970) 920-5400
Fire Department
(970) 925-8484
Aspen Community Development
(970) 920-5090
Aspen Water Department
(970) 925-5110
Aspen Consolidated Sanitation
(970) 925-3601
04/24/2018
Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red butte
Page | 2
4.0 PROJECT IMPLEMENTATION
4.1 Dates of Construction
Currently, the construction is scheduled to commence on July 1st, 2015. It is estimated that the total construction
duration will be 19 Months, with a desired completion date of January 5, 2017.
4.2 Hours of Construction
As required by City Ordinance, construction hours will be limited to 7:30am – 5:30pm, Monday through Friday,
and 9:00am – 5:00pm on Saturdays. Construction activities will not be permitted on Sundays.
In accordance with the Noise Suppression Plan, work activities generating noise levels in excess of 80 db. will be
constrained to the hours of 9:00am – 5:00pm Monday through Friday only.
The following days are denoted as No-Work days;
Sundays
Food and Wine weekend (Friday-Saturday)
4th of July and Weekend
Memorial Day Weekend, including Monday
Labor Day Weekend
Thanksgiving Day
Week of Christmas (Dec. 25-Jan. 1)
4.3 Schedule
See attached Appendix E – Construction Schedule
4.4 Adjoining Properties
Given shallow depth of existing foundations near adjacent properties, no shoring measure are needed
4.5 Project Fencing
The Project will be secured with removable and semi-permanent chain link style construction fence for the duration of
the Demolition. The fence will be 6’-0” in height with windscreen, and will be installed per the attached site plan.
4.6 Public Health and Welfare
Public health and welfare is central to the daily operations of the demolition process.
4.7 Natural Environment
Aspen Tree Service will act as the consulting arborist for the Project and they have submitted for, and obtained a
Tree Removal Permit from the City Forester.
5.0 PARKING MANAGEMENT
5.1 Parking Management
See attached Appendix B – Parking Management Plan
5.2 Emergency Access / Ordinance 35
KORU, Ltd. will maintain continuous access for Emergency Vehicles (Police, Fire, and Ambulance) on and around
the Project site. See attached Appendix F for diagram detailing Emergency Ingress/Egress for the site.
5.3 Construction Parking
Parking is intended to be within the project site fence. See attached Appendix B
04/24/2018
Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red butte
Page | 3
5.4 Staging Areas
All materials, materials handling equipment, and staging will be confined to the Project site. Under no
circumstances, will Project materials or equipment be stored in the Public ROW. KORU, Ltd. will maintain trash
containers and portable restroom facilities within the limits of the property. See attached Site Plan.
5.5 Material Storage and Waste Management
Metal and Concrete materials from the demolition will be separated and organized on the site for recycling.
6.0 TRAFFIC CONTROL
6.2 Haul Routes
See Appendix C - Haul Route Map
6.3 Weight and Size Limitations of Vehicles
The following represents the weight and size limitations for vehicles for the Project;
Dump Trucks – 54,000 GVW
Excavator – 54,000 GVW
6.4 Delivery Requirements
We estimate a maximum of two deliveries at a time. Delivery hours would be between 8:00am and 5:00 PM M-F
The anticipated numbers of total truck trips is as follows;
6 Loads of Excavation Equipment Mobilization
30 Loads of Construction Debris Leaving Site
75 Temporary Toilet Cleaning Trips
Debris pickup and delivery times will be coordinated such that only one truck will be on-site at any given time.
Delivery vehicles and all other on-site vehicles will not be allowed to idle for more than 5 minutes, (with the
exception of generators or PTO type operations). Project sub-contractor and suppliers will be provided with written
notification of Aspen’s vehicle idling regulations.
See Appendix H - Vehicle Idling Regulations
6.5 Traffic Control Plan
KORU, Ltd. does not anticipate a need to interfere with traffic on any Public Right-Of-Way. If an unforeseen need
arises, a Traffic Control Plan (TCP will be prepared by a State Certified Traffic Control Supervisor. This plan will
conform to the most current edition of the Manual of Uniform Traffic Control Devices for Streets and Highways
(MUTCD) and be submitted to the City of Aspen Department of Engineering for approval/permitting.
8.0 SEDIMENT AND EROSION CONTROL
8.1 Storm Water Pollution Prevention Plan
All necessary Best Management Practices (BMP's) will be installed and maintained in order to minimize
potential contaminants entering adjacent streets, gutters, and waterways. Primary measures are as follows:
Avoid unnecessary site disturbance.
Maintain grading; install silt fences and sediment traps, prior to and during any soil disturbance.
Minimize tracking of dirt and mud outside the project limits through engineering controls and use of tracking
pads.
Utilize approved means and methods for concrete placement and washout.
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Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red butte
Page | 4
Due to the size of the lot, and existing gravel driveway, Koru will make every effort to take additional
precautionary actions by limiting site ingress/egress during and immediately following significant precipitation
events, and by timing egress (during winter months) to morning hours prior to daily thaw cycles.
Use approved temporary sanitary facilities, and adhere to maintenance means, methods and schedules.
Stabilize pathways around the perimeter of the project primarily through the use of screened rock over geo-
textile fabric.
8.2 BMP’s for Stormwater Pollution Prevention
Best Management Practices (BMPs) will be employed for stormwater management as indicated in the following
sections.
A. Structural Practices:
a.Silt fences will be installed on the downhill sides of all areas of disturbance. (See Fig. 1.0, Typical
Temporary Sediment Control Fence.)
b.Due to the existing gravel driveway, it is assumed that a Vehicle Tracking Control pad (VTC) will not be
needed however;
i.Koru will make every effort to take additional precautionary actions by limiting site
ingress/egress during significant precipitation events, and by timing egress (during winter
months) to morning
c.Temporary diversion ditches and swales will direct runoff from other site areas through straw wattle and
hay bale filtration prior to discharge off the site. The exact location and alignment of these structures
will be determined in the field based on project phasing and the space needed for construction staging.
d.Fugitive dust control will be achieved using a hose and spray nozzle.
e.Surface roughening will be conducted in newly excavated areas to provide temporary stabilization
when other temporary stabilization measures are not feasible (such as gravel or temporary vegetation)
or will not be provided immediately.
Figure 1.0 – Typical Sediment Control Fence
B. Inlet / Drain / Stockpile Protection
Following installation of any temporary and / or permanent stormwater drains, sump pits, or swales, temporary
sediment control features will be installed and maintained until project completion. Typically, straw wattles will
be installed according to the following detail(s).
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Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red butte
Page | 5
Figure 3.0 – Temporary Sediment Protection
C. Non-Structural Practices: Pollution prevention will be stressed among all employees and sub-contractors,
including adequate training of personnel and frequent monitoring of activities.
a.Proper facilities and procedures will be used for on-site waste storage and disposal. Daily inspection
and maintenance of waste disposal areas will be conducted. Where possible, waste containers will be
covered, and waste storage areas will be fenced.
b.The contractor will ensure that good housekeeping be employed during demolition, with all work,
materials storage and waste storage areas kept in a neat and orderly condition.
c.Existing trees and mature vegetation that are not to be removed will be protected during demolition to
limit unnecessary disturbance of site soils and maintain natural erosion control.
D. Temporary Facilities:
A temporary sanitary facility (Port-a-potty) will be utilized on-site during construction activities. The following
BMP’s will be utilized to minimize potential for negative environmental impact;
1.Portable toilets should be located away from high-traffic vehicular areas.
2.Portable toilets must be placed at least 20 feet away from all storm drains and streets.
3.Portable Toilets MUST NOT EVER be placed on top of storm drain inlets or on a street.
4.Portable toilets shall be placed on a level ground surface that provides unobstructed access to users and
servicing pump trucks.
5.Portable toilets should wherever possible be located upon natural ground and not on or within 5 feet of a
paved surface such as asphalt, concrete or similar.
6.If portable toilets must be placed on a paved surface exposed to rainwater or stormwater runoff, extra care
must be taken during servicing to ensure any waste water spilled onto the paved surface is rinsed and
adequately collected so as not to leave any residue. A wet shop vacuum or similar would provide for
adequate collection.
7.Portable toilets should not be located within the buffer of any stream (ditch) or lake, or within any other
larger stream/lake buffer that may have been established.
The following maintenance steps will be utilized to minimize potential for negative environmental impact;
1.Portable toilets must be cleaned and have waste removed at least weekly. Additional servicing and/or
portable toilets may be necessary depending on the volume of use the toilets receive.
2.Damaged portable toilets must be repaired/replaced immediately.
04/24/2018
Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red butte
Page | 6
3.Rinsing of portable toilets (excluding the inside of portable toilet waste tank) may be completed on site when
the following conditions are met:
a.Rinse water is controlled to prevent it from entering into a storm drain;
b.No more than one (1) gallon of rinse water is used per portable toilet (i.e. low volume high-
pressure cleaners, or bucket and rag. No common household hoses.);
c.rinsing is completed at least 20 feet away from a street or storm drain.
d.Where the portable toilet must be located on a paved surface:
i.any rinse water that comes in contact with the paved surface must be adequately collected.
e.Where the portable toilet is located on a non-paved surface:
i.rinsing should be completed at least 5 feet away from a paved surface;
ii.rinsing wastewater is drained to the ground at a rate that allows it to immediately soak
into the ground;
f.Rinse water generated during the cleaning of portable toilet waste tanks must not be discharged to
the ground or to a storm drain and must be retained within the tank.
g.Maintain all portable toilets in good condition to prevent leaks or spills.
h.Portable toilet wastewater (human waste/sewage) must never be disposed of on-site.
E. Materials Handling
a.All potentially hazardous materials will be stored off site. In the event that any such materials are
stored on site, toxic materials and petroleum products will be enclosed and contained in an impervious
elevated basin sized large enough to hold the volume of the hazardous materials being contained.
b.Any spill or discharge or construction related materials will be cleaned up immediately and disposed of
accordingly.
c.Any spill not properly contained and cleaned-up will be reported to the proper authorities.
i.Aspen Fire Department, Fire Marshal: (970) 925-2690.
ii.Colorado Department of Public Health and Environment, Emergency Response: (303) 756-
4455.
iii.City of Aspen Engineering Department: (970) 920-5080.
iv.City of Aspen Environmental Health Department: (970) 920-5039.
v.National Response Center: 800-424-8802.
8.3 Final Stabilization and Long-Term Stormwater Quality
All temporary BMPs will remain in place until demolition is complete and revegetation has been verified to have
taken hold. Installation of permanent site drainage measures and stormwater management practices will be as
detailed in the project Civil Drawings, included in the permit submittal package.
8.4 Inspection and Maintenance Procedures
A. A thorough inspection of the stormwater management system will be performed at least every 14 days, and
after any precipitation event that causes run off. The inspection will include the observation of the construction
site perimeter and discharge points, all disturbed areas, and material storage areas exposed to precipitation.
All erosion and sediment control measures will be inspected for integrity and functionality (e.g., sediment
fences, hay bales, straw wattles, temporary swales and ditches).
B. Damaged or ineffective BMPs will be fixed and/or replaced. Removed sediment should be placed where it will
not become an additional pollution source.
C. When necessary, BMPs will be added, removed or replaced with more effective measures. All such actions will
be documented and the SWMP will be updated to reflect those changes.
9.0 FUGITVE DUST CONTROL
9.1 Dust Control Plan
The project's Dust Prevention and Control Plan are as follows:
04/24/2018
Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
1310 Red butte
Page | 7
Avoid unnecessary site disturbance.
During demolition operations if dry or deemed otherwise necessary a hose and spray nozzle will be used on
site to mitigate air born dust.
Exported demolition debris will be hauled off via covered dump trucks. All areas directly surrounding the site
will be maintained daily with thorough cleanings taking place every Friday afternoon.
24 Hour Contact: Mike Simpson (970) 379-5580.
10.0 EMISSIONS
10.1 Maintenance
All vehicles and equipment used on site will be properly maintained such that the engines will function within the
manufacture's standards or parameters.
10.2 Opacity
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 1O seconds or for stationary operation not exceeding 10
seconds.
11.0 NOISE SUPPRESSION
11.1 General
The noise limit for construction is 80 decibels measured at the property line of the construction site. All construction
equipment shall be adequately muffled and maintained to minimize project noise. The installation of noise barriers
is the minimum technique to suppress noise, especially when jack hammering of concrete occurs
11.2 Noise Suppression Plan
All activity that generates noise in excess of 80 decibels requires a noise suppression plan and is restricted to
operating between the hours of 9am and 5pm Monday through Friday.
Koru will install noise reduction panels to the relevant portions of the perimeter site fence (Acousticblock,
Acoustifence product or similar) and utilize portable sound blocking panels to further mitigate sound as needed at
specific areas ie: surround compressors, mixers, noisy equipment (Echo Barrier, acoustic noise barrier, or similar)
See Noise Suppression Plan - APPENDIX D.
11.3 Equipment and Methods
In addition to the standard practices agreed to within the signed Noise Suppression Plan, the table below from the
City of Aspen's complete packet has been included for quick contractor/subcontractor reference.
Noise Control for Construction Equipment (Schneider, et al., 1995)
Equipment Noise Controls
Pile Driver Enclosure, Muffler
Stone Saw Cutting Noise Control pad with water
Hand-held impact drills Reduction of reflected sound
Circular saw blades 15° tooth angle, new tooth configuration, slotted saw blades, viscoelastic damping
Pneumatic tools Muffler
Pavement breaker, Rock
Drill
Muffler, enclosure of cylinder case and front head, moil damping
Portable air compressor Muffler, acoustic enclosures
Bulldozer Bulldozer Cab liner material, enclosure, sound absorption in canopy, sealing of all
openings
Wheeled loader Absorption of sound cooling air route
04/24/2018
Koru Ltd 417 Main St., Suite Y Carbondale, CO 81623 Phone 970.963-0577 Construction Management Plan 1310 Red Butte Appendix ARequired Project SignAppendix A – Required Project Sign Dimensions – 36”W X 24”H 04/24/2018
Koru Ltd 417 Main St., Suite Y Carbondale, CO 81623 Phone 970.963-0577 Construction Management Plan 1310 Red Butte Appendix BParking PlanAPPENDIX B - PLARKING PLAN04/24/2018
Koru Ltd 417 Main St., Suite Y Carbondale, CO 81623 Phone 970.963-0577 Construction Management Plan 1310 Red Butte Appendix BParking Plan04/24/2018
Koru Ltd
417 Main St., Suite Y
Carbondale, CO 81623
Phone 970.963-0577
Construction Management Plan
233 West Hallam Street Appendix D
Noise Suppression Plan
Appendix D - Noise Suppression Plan
04/24/2018
Specific noise suppression requirements for all activities exceeding
80 decibels at a construction site include:
1.Notify neighbors within two hundred fifty (300) feet of the project informing them of
the kinds of equipment, expected noise levels and durations of loud work. Including
the variation of noise levels during a typical construction days may be helpful. Such
notification must be in writing and be done seven (7) days prior to the starting time of
the project. 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.
2.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.
3.Post notices to inform workers, including sub-contractors, about the basic noise
requirements, as well as specific noise restrictions, to the project.
4.Install noise barriers around all equipment/activities specified in
Table 1: TYPICAL CONSTRUCTION EQUIPMENT REQUIRING NOISE
SUPPRESSION. Noise barriers not only significantly reduce construction noise, but
they also provide an extra benefit of “hiding” the noise producing sources, thus
increasing a neighbor’s tolerance. (See also the attached list of noise blocking
methods for details on approved noise barriers.)
5.Move portable loud equipment including generators, compressors, and cement
mixers to different sides of the property to reduce impacts on individual neighbors.
What can you do about construction noise?
•The use of radios on the site before 8:00 am are not allowed: remind laborers and sub-
contractors.
•Noise suppression plans will not allow noisy machines such as brick cutters or
jackhammers to be operated before 9.00 am.
•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.
•When dropping materials from a height—for example, into or out of a truck, or when
loading or unloading scaffolding, noise suppression plans require a chute or side baffles.
•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.
Revised 01/09/2013
Appendix D - Noise Suppression Plan
04/24/2018
TABLE 1: NOISE CONSTRUCTION EQUIPMENT REQUIRING NOISE
SUPPRESSION PLANS
Equipment Category
Auger Drill Rig
Backhoe
Chain Saw
Clam Shovel
Compressor (air)
Concrete Mixer
Concrete Pump
Concrete Saw
Crane (mobile or stationary)
Dozer
Drill Rig
Excavator
Front End Loader
Generator (more than 25 KVA)
Gradall
Grader
Horizontal Hydraulic Boring Jack
Impact Pile Driver (diesel or drop)
Impact Wrench
Jackhammer*
Mounted Impact Hammer (hoe ram)
Paver
Pneumatic Tools
Rock Drill
Scraper
Scarifier
Slurry Machine
Vibratory Pile Driver
Revised 01/09/2013
Appendix D - Noise Suppression Plan
04/24/2018
Noise Blocking Methods
Contractors shall require all subcontractors and vendors to use:
•Quieter vs. Louder equipment
•“Residential” grade combustion engine exhaust silencers
•Electrical vs. pneumatic hand power tools: All pneumatic tools operated in the City of
Aspen must be fitted with an effective silencer on their air exhaust port.
•Hydraulic vs. air powered rock drills
•“Silenced” pile drivers vs. Diesel pile drivers
In general, noise reduction equipment and materials may include, but not be limited to:
1.Shields, shrouds, or intake and exhaust mufflers.
2.Noise-deadening material to line hoppers, conveyor transfer points, storage bins,
or chutes.
3.Noise barriers using materials consistent with the Temporary Noise Barrier
Materials Section.
4.Noise curtains
5.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.
6.Portable three sided enclosures made out of plywood to move with the activity
such as jack hammering.
7.Internal combustion engines are to be fitted with a suitable muffler in good repair.
Specific Equipment:
Generators: The local power grid shall be used wherever feasible to limit generator noise. No
generators larger than 25 KVA shall be used and, where a generator is necessary, it
shall have maximum noise muffling capability.
Backup Alarms: All equipment with backup alarms operated by the Contractor, vendors,
suppliers, and subcontractors on the construction site shall be equipped with
either audible self-adjusting ambient-sensitive backup alarms or manually-
adjustable alarms. The ambient-sensitive alarms shall automatically adjust to a
maximum of 5 dBA over the surrounding background noise levels. The
manually-adjustable alarms shall be set at the lowest setting required to be
audible above the surrounding noise. Installation and use of the alarms shall be
consistent with the performance requirements of the current revisions of Society
of Automotive Engineering (SAE) J994, J1446, and OSHA regulations.
Compressors: The unit with the lowest noise rating which meets the requirements of the job
should be used where work is conducted in the City of Aspen, installed with
mufflers and/or enclosed in a noise barrier.
Revised 01/09/2013
Appendix D - Noise Suppression Plan
04/24/2018
Jackhammer: All jackhammers and pavement breakers used on the construction site shall have
exhaust systems and mufflers that have been recommended by the manufacturer
as having the lowest associated noise and shall be enclosed with shields or
acoustical barrier enclosures.
Concrete crushers or pavement saws: Pre-augur pile holes to reduce the duration of impact or
vibratory pile driving and tie to local power grid to
reduce the use of generators and shall be enclosed with
shields or acoustical barrier enclosures.
Pneumatic hand power tools: All pneumatic tools operated in the City of Aspen must be fitted
with an effective silencer on their air exhaust port.
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.
Impact Equipment:
Impact noise is noise produced from impact or devices with discernible separation in sound
pressure maxima. Examples for impact equipment include, but are not limited to; blasting, chisel
drops, mounted impact hammers (hoe ram), and impact pile drivers.
Impact equipment is the loudest and most intrusive to the neighboring property. The City of
Aspen requires that this type activity have the strictest mitigation requirements and
requires a customized noise suppression plan specific to the site. General contractors must
contact the City of Aspen Environmental Health Department for an application at 970-920-5039.
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
•Quiet work practices - use rubber mallets to erect and dismantle formwork.
Revised 01/09/2013
Appendix D - Noise Suppression Plan
04/24/2018
Revised 01/09/2013
Noise Controls for Construction Equipment (Schneider et al., 1995)
Equipment Noise Controls
Pile Driver Enclosure, muffler
Stone saw cutting Noise control pad with water
Handheld impact drills Reduction of reflected sound
Circular saw blades 15º tooth angle, new tooth configuration, slotted saw blades,
viscoelastic damping
Pneumatic tools Muffler
Pavement breaker/ Rock
drill
Muffler, enclosure of cylinder case and front head, moil damping
Portable air compressor Muffler, acoustic enclosures
Bulldozer Bulldozer Cab-liner material, enclosure, sound absorption in canopy,
sealing of all openings
Wheeled loader Absorption of sound cooling air route
Vibratory roller Flexible mounting for pump compartment
Joint Cutter Anti-vibration mounting fixtures
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APPENDIX D
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APPENDIX D
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Koru Ltd 417 Main St., Suite Y Carbondale, CO 81623 Phone 970.963-0577 Construction Management Plan 1310 Red Butte Appendix EProject ScheduleAppendix E – Project Schedule, Revised 4.15.1804/24/2018
6'Site FenceSilt FenceEmergency VehicleAccessDumpsterOfficeStagingTemp ToiletsStagingGravel at Entry forMud TrackingAppendix F - Project Site MapBridge Repair Area, 4/15/18Existing stairs to bridge04/24/2018
Appendix G - Ordinance No. 35
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417 Main St., Suite Y,
Carbondale, CO 81623
970.963-0577 ph. Ι
970.963.9389 fax
Construction Management Plan
1310 Red Butte
Appendix H
Engine Idling
Appendix H – Engine Idling
Section 13.08.110 Engine Idling.
(a) Except as hereinafter provided, it shall be unlawful for any person to idle or permit the idling of the motor of
any stationary motor vehicle for a prolonged or unreasonable period of time determined herein to be five
(5) minutes or more within any one (1) hour period of time.
(b) This section shall not apply when an engine must be operated in the idle mode for safety reasons including,
but not limited to, the operation of cranes and fork lifts used in the construction industry.
(c) The time required by a diesel powered motor vehicle with a gross weight rating of ten thousand (10,000)
pounds or more while operating in a stationary position to achieve a temperature of one hundred twenty
(120) degrees Fahrenheit and an air pressure of one hundred (100) pounds per square inch, shall not be
included in the computation of the five (5) minutes determined herein to be a prolonged or unreasonable
period of time. The temperature and air pressure as indicated on the vehicle's gauges may be used for
determining the diesel engine's temperature and air pressure.
(d) The time during which transportation vehicles are actively loading or discharging passengers shall not be
included in the computation of the five (5) minutes determined herein to be a prolonged or unreasonable period
of time. A transportation vehicle shall be defined for purposes of this section to mean motor vehicles designed to
transport a minimum of sixteen (16) persons. (Ord. No 74-1992, § 1: Code 1971, § 11-2.70
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