HomeMy WebLinkAboutFile Documents.433 W Bleeker St.0170.2017 (11).ARBKKAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 1 of 12
CONSTRUCTION MANAGEMENT PLAN
FOR
433 BLEEKER
Owner:
Contractor: Kaegebein Fine Homebuilding, LLC
970-379-6228
Safety Officer: Charlie Berger
970-618-7493
Traffic Control Officer: Charlie Berger
970-618-7493
Erosion Control Officer: N/A
_______________________
BUILDING PERMIT NUMBER:
Submittal Date:
6.26.17
1. CMP INDEX:
1. INDEX 2
2. PROJECT LOCATION 3
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 2 of 12
2.1 DISTURBANCE AREA
2.2 LOCATION
2.3 DESCRIPTION
3. PROJECT DOCUMENTATION 3-4
3.1 PERMITS/OTHER DOCUMENTS
3.2 PUBLIC NOTIFICATIONS
3.3 PROJECT SIGN
3.4 CONTACT DESIGNATION
4. PROJECT IMPLEMENTATION 4-6
4.1 DATES OF CONSTRUCTION
4.2 HOURS OF CONSTRUCTION
4.3 SEQUENCE (PHASING) OF CONSTRUCTION
4.4 ADJOINING PROPERTIES
4.5 PROJECT FENCING
4.6 PUBLIC HEALTH AND WELFARE
4.7 NATURAL ENVIRONMENT
5. SITE AND RIGHT OF WAY MANAGEMENT 6-8
5.1 RIGHT OF WAY MANAGEMENT PLAN
5.2 EMERGENCY VEHICLE ACCESS AND ORDINANCE 35
5.3 CONSTRUCTION PARKING DETAILS
5.4 STAGING AREAS
5.5 RIGHT OF WAY LIMITATIONS
5.6 CONSTRUCTION TRAILER, MATERIALS STORAGE, AND WASTE MANAGEMENT
6. TRAFFIC CONTROL 8
6.1 GENERAL
6.2 HAUL ROUTES
6.3 ONSITE VEHICLE LIMITATIONS
6.4 DELIVERY REQUIREMENTS
6.5 TRAFFIC CONTROL PLAN
7. PEDESTRIAN PROTECTION 9
7.1 GENERAL
7.2 LIMITATIONS
8. SEDIMENT AND EROSION CONTROL 9
8.1 REQUIREMENTS
8.2 SMUGGLER MOUNTAIN RESTRICTIONS
9. FUGITIVE DUST CONTROL 9
9.1 FUGITIVE DUST CONTROL PLAN
9.2 REQUIREMENTS
10. EMISSIONS 9-10
10.1 GENERAL
10.2 EMISSIONS FROM DIESEL POWERED ENGINES
11. NOISE SUPRESSION PLAN 10-11
11.1 GENERAL
11.2 NOISE SUPPRESSION PLA
2. PROJECT LOCATION
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 3 of 12
2.1. DISTURBANCE AREA
The total disturbance area of the project will be the entire lot of 5900 SF.
2.2. PROJECT VICINITY MAP
See attached map. Exhibit “A”
2.3. LOCATION DESCRIPTION
Background information: Vacant Lot
Proposed Development Type: Single Family Residence
General Information: Construction of a new single family residence on a
vacant lot.
3. PROJECT DOCUMENTATION
3.1. LIST ALL PERMITS AND PROVIDE ALL COPIES OF PERMITS:
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 4 of 12
Building Permit
ROW Encroachment Permit
Construction Parking Permit
Electrical Permit
Fire Permit
Mechanical Permit (HVAC)
Mechanical Permit (Fireplace)
Plumbing Permit
Temporary Encroachment Permit
Tree Permit
Water Utility Connection Permit
A copy of the permits will be included in the onsite copy of the CMP.
3.2. PUBLIC NOTIFICATION:
The Project representative is Charlie Berger of Kaegebein Fine Homebuilding. The
Preconstruction meeting is scheduled for _______________2017 at 9 AM and will
be scheduled on site. A monthly project report will be posted on site in a
receptacle near the construction information sign. All neighbors will be notified in
writing 10 days prior to construction.
3.3. PROJECT SIGN
Project Name: 433 Bleeker
Building Permit Number: ___________________
General Contractor Name: KAEGEBEIN FINE HOMEBUILDING, LLC
General Contractor Contact: Charles Berger
General Contractor Phone #: 970-618-7493
Emergency Phone #: 970-379-6228
Sign will be green in color and meet the criteria of City Municipal Code 26.510.030B4.
3.4. CONTACT LIST:
Owner:
Contractor: Kaegebein Fine Homebuilding, LLC
970-379-6228
Safety Officer: Charlie Berger
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 5 of 12
970-618-7493
Traffic Control Officer: Charlie Berger
970-618-7493
Erosion Control Officer: N/A
_______________________
4. PROJECT IMPLEMENTATION
4.1. DATES OF CONSTRUCTION
9.15.17 – 2.15.17
4.2. HOURS OF CONSTRUCTION
Construction hours will adhere to section 4.2 of CMP requirements manual, June 26th,
2017.
4.3. CONSTRUCTION SCHEDULING AND PHASING
This is an approximate 18 month project.
Temporary Shoring: 1.0 months
Excavation: 1.0 months
Concrete: 2.0 month
Steel (phase 1): 1 months
Framing (phase 1): 2 months
Utility tie in and Backfill: 1.0 month
Steel/Framing (phase 2): 2.0 months
Interior rough in: 4.0 months
Interior/Exterior finishes: 3.0 months
Landscaping: 1.0 months
4.4. ADJOINING PROPERTIES
Micro pile shoring will be utilized to protect both the construction site and the adjoining
properties. There is no sidewalk between the property and Bleeker. As such, a
temporary encroachment permit will be applied for to:
Crane Materials onsite
The Alley to the north of the property will be used to access the construction site.
4.5. PROJECT FENCING
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 6 of 12
A silt fence will be installed around the perimeter of the construction area. A six foot
green screen chain link fence will also be installed around the perimeter of the
construction area.
See CMP site plan.
4.6. PROJECT RESPECTS PUBLIC HEALTH AND WELFARE
This construction project “shall uphold utmost respect to public health and welfare”.
Asbestos will be removed by a state qualified asbestos abatement company.
4.7. NATURAL ENVIRONMENT
Per an onsite meeting with the city forester, Ben Carlson, all trees that are to be
preserved will be fenced off at the drip line. No encroachment allowed during drilling
phase into the tree encroachment. KFH will conduct an onsite meeting with Staff to
finalize fencing prior to excavation.
5. SITE AND RIGHT OF WAY MANAGMENT
5.1. RIGHT OF WAY MANAGEMENT PLAN
Due to the limited size and accessibility of the project the use of the ROW along Bleeker
is being requested for the following:
1. Temporary storage of construction materials.
2. Park or stage and operate construction equipment, crane, and pump truck.
3. Temporary placement of field office, dumpster, construction fencing.
See CMP site plan.
5.2. EMERGENCY VEHICLE ACCESS
Emergency vehicle access will not be inhibited. The site is readily accessible from the
Alley, Monarch or Bleeker.
5.3. CONSTRUCTION PARKING DETAILS
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 7 of 12
There is no on-site parking available on this construction site. Parking will be achieved
through residential on street parking. No permanent spaces shall be requested. All
parking shall utilize HOA or other permits.
This project will utilize the Carpool Program and project shuttle during the phases of
construction when this is practical and possible
Parking passes will be issued for those vehicles which are unable to carpool or park in
designated construction parking.
5.4. SITE LOCATIONS FOR STAGING MATERIALS
The minimal on site staging area will be utilized carefully. All possible deliveries will be
thru the alley without blocking traffic. Some staging will be done along Bleeker behind
the back of curbing. (see CMP plan)
Export of excavation truck trips: 300 (month 3)
Concrete truck trips: 10 (month 4)
Steel delivery truck trips: 5 (month 5 and 8-10)
Lumber delivery truck trips: 15 (month 5 and 8-10)
Import of backfill truck trips: 90 (month 7)
Misc. finish material truck trips: 25 (month 10-17)
Landscape truck trips: 10 (month 15)
Total truck trips: 450
5.5. RIGHT OF WAY LIMITATIONS
A. Due to the limited size and accessibility of the project the use of the ROW between
Bleeker and the Project Site is being requested for the following:
1. Temporary storage of construction materials.
2. Park or stage and operate construction equipment, crane, and pump truck.
3. Temporary placement of field office, dumpster, construction fencing.
4. Temporary storage of the historic Victorian.
See CMP site plan.
A temporary encroachment permit will be obtained for use of this area. The duration
is to be determined, but initial estimates indicate 6mos.
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 8 of 12
B. There is no pedestrian sidewalk on Bleeker.
C. The site does not fall with the seasonal limitations for temporary encroachments.
5.6. CONSTRUCTION TRAILER, MATERIALS STORAGE, AND WASTE MANAGEMENT
No loose job materials will be stored in the ROW.
On site recycling separation will occur on this project per the CMP manual section 5.6.
During demolition, concrete and scrap metal will be sorted and kept separate on site in
designated areas.
Any trash receptacle that is used for food refuse will be constructed in such a manner to
render it bear proof.
A hazardous material spill cleanup kit will be on-site if specified by the City Engineer.
6. TRAFFIC CONTROL
6.1. GENERAL
All traffic control operation shall be managed by the designated certified traffic control
supervisor.
6.2. PROJECT HAUL ROUTES
Heavy haul routes will follow Main street to Bleeker. Following Main street out of town
as shown in appendix B of CMP manual.
6.3. ONSITE VEHICLE LIMITATIONS
Max: 40 ft and 48,000 pounds
6.4. DELIVERY REQUIREMENTS
Road closures will not be required during construction operations. If it is determined
that a road closure is required, the proper permit will be obtained from the City of Aspen
Engineering Dept.
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 9 of 12
Alley closure will be necessary during installation of utilities. Permit will be obtained for
the closure.
The site has capacity for one delivery at a time and will be limited to the hours of
construction. There will be no exceptions to the delivery schedule.
6.5. TRAFFIC CONTROL PLAN
A traffic control plan will be provided if requested by City Engineer.
7. PEDESTRIAN PROTECTION
No pedestrian sidewalks will be impacted by this construction project.
8. SEDIMENT AND EROSION CONTROL
8.1. REQUIREMENTS
See Construction Erosion control and Stormwater Management Plan. Included in Civil
Drawings.
8.2. SMUGGLER MOUNTAIN RESTRICTIONS
This site is not on Smuggler Mountain.
9. FUGITIVE DUST CONTROL
The project will utilize the following fugitive dust control measures.
1. The front and back access shall be graveled to keep mud from the street.
2. A water tap shall be kept in place as to water the site daily. A water truck will not
be in place in the winter months.
3. Mud tracks and tire cleanout station shall be placed and used.
4. An onsite Bobcat with street sweeper shall be used as necessary to keep the
public ROW clean from mud and debris.
5. An onsite pressure washer shall be used to keep the public ROW clean.
6. Vehicle speeds will be kept to 15 MPH
24 HOUR EMERGENCY CONTACT: Charlie Berger 970-618-7493
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 10 of 12
10. EMISSIONS
10.1. GENERAL
All vehicles and equipment used on site shall be properly marinated 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 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. NOISE SUPPRESSION
11.1. GENERAL
All Construction equipment shall be adequately muffled and maintained to minimize
project noise.
11.2. NOISE SUPPRESION PLAN
All activity that generates noise in excess of 80 decibels will be restricted to operating
between the hours of 9AM and 5PM Monday thru Friday.
A sound barrier will be installed on the south and east property line for the duration of
the micropile, excavation, and concrete phase of the project.
Sound engineering model and mitigation measures. Exhibit C
11.3. CONTINUED NOISE MONITORING
Continued noise monitoring will be installed if required by the Engineering dept.
11.4. REQUIREMENTS FOR ACTIVITIES EXCEEDING 80 DECIBELS
1. Any work producing noise levels over 80 decibels is not permitted to commence
until after 9:00 AM and is not permitted on Saturdays. This does not restrict quiet work
inside and outside that does not require a power source, including a battery, on
Saturday.
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 11 of 12
2. All neighbors within three hundred feet of the project will be notified. Informing
them of the kinds of equipment, expected noise levels and duration of work.
COMMUNICATION WITH THE NEIGHBORS WILL BE MAINTAINED AT ALL TIMES
WITH THE INTENT OF REDUCING COMPLAINTS.
3. Equipment will be operated in accordance with the manufacturer’s specifications
and with all standard manufacturers’ mufflers and noise reducing equipment in use and
properly operating condition.
4. Notices to inform workers, including sub-contractors, will be posted about basic
noise requirements, as well as specific noise restrictions.
5. Table 1 of Appendix C will be followed for noise barriers.
6. Portable loud equipment will be moved to different sides of the property to reduce
noise impact on individual neighbors.
7. Radios will not be on prior to 8:00 AM.
11.5. SPECIFIC RESTRICTIONS RELATED TO MANUFACTURING ON SITE
Project materials proposed, will not require onsite manufacturing activities. Minor
manufacturing, such as chipping stones, mixing mortar and grout, cutting woods and
plastics, welding, drilling, painting and staining, etc will take place on site.
EXHIBITS:
Exhibit A – Vicinity Map
Exhibit B – CMP Site Plan
Exhibit C – Noise Suppression
01/16/2018
KAEGEBEIN FINE HOMEBUILDING, LLC
PO Box 1570, Carbondale, CO. 81623
Phone: (970) 510-5797 Fax: (970)963-1392
office@kfhomebuilding.com
www.kfhomebuilding.com
Page 12 of 12
EXHIBIT “A”
01/16/2018
Proposed MicropileCap LocationMicropile WallStart/End WallMicropile WallTurn Line 1Micropile WallTurn Lines 2 and 3Micropile WallTurn Line 4Micropile WallTurn Line 5Micropile WallTurn Line 6Micropile WallTurn Lines 7 and 8Micropile WallTurn Line 9Micropile WallTurn Line 10Micropile WallTurn Lines 11 and 12Micropile WallTurn Line 13Micropile WallTurn Lines 14 and 150+20
0+40
0+60
0+80
1+001+201+401+601+802+002+202+402+602+803+003+200+90GRADE-50+50
GRADE-5
1+70GRADE-52+55GRADE-52+90GRADE-5Temporary Micropile WallLocationJuly 14, 2017Residence433 West Bleeker Street17-039G-D1GRADE-2of 6RDJProject Number:Date:Sheet Number:Prepared by:Project:Sheet RevisionsDateRevision/IssuePrepared byB&Y Drilling, Inc.Designed For:Stations 1+87 to 1+93 changed to System 2RDJ07.17.17Seal:NSCALE: 1" = 5'502.55Notes:1. Base plan by Thunderbowl Architect dated 06-29-17.2. Micropile wall shall be constructed entirely within property boundaries.266 Red Cliff Circle Glenwood Springs, CO 81601Phone: (970) 230-92086'x8'x14" deepportable PVCconcrete cleanoutOUTPACKCONCRETEWASHOUTINSERT#3REBARL-BRACKETS1.THECONCRETEWASHOUTAREASHALLBEINSTALLEDPRIORTOANYCONCRETEPLACEMENTONTHISPROJECT.2.SIGNSSHALLBEPLACEDASNECESSARYTOCLEARLYINDICATETHELOCATIONOFTHECONCRETEWASHOUT.3.THECONCRETEWASHOUTAREAWILLBEREPLACEDASNECESSARYTOMAINTAINCAPACITYFORWASTECONCRETEANDOTHERLIQUIDWASTE.4.WASHOUTRESIDUESHALLBEREMOVEDFROMTHESITEANDDISPOSEDOFATANAPPROVEDWASTESITE.5.DONOTMIXEXCESSAMOUNTSOFFRESHCONCRETEORCEMENTON-SITE.7.DONOTDUMPINGEXCESSCONCRETEINNON-DESIGNATEDDUMPINGAREAS.8.LOCATEWASHOUTAREAATLEAST50'(15METERS)FROMSTORMDRAINS,OPENDITCHES,ORWATERBODIES.9.WASHOUTONLYWASHOUTNON-HAZARDOUSWASTESINTOTHEOUTPACKWASHOUT.NOTES:6'TO8'1.2'INSERTSTAPLESAROUNDREBARL-BRACKETS8'TO10'REINFORCED20MILPVCNO SOIL IS PLANNED TO BE STOCKPILED ON SITE. IF ANYSHORT DURATION STOCKPILENEEDS ARISE. STOCKPILEPROTECTION WILL BE INACCORDANCE WITH NOTESON EROSION CONTROL PLANapproximateback of curbROW TEMPORARYSITEENCROACHMENTPERMITAREA, LONGDURATIONCONSTRUCTIONACCESS GATE.USED PRIOR TOEXCAVATION. ANDAFTER FOUNDATIONHAS BEEN BACKFILLEDCONSTRUCTION ACCESS GATEUSED DURING EXCAVATION,FOUNDATION, BACKFILLALLEYACCESSAREA FOR MIXED WASTERECEPTACLE ANDTEMPORARY TOILETSITEPARKINGAREA VIADAILYPERMITS.TEMPORARYSHORINGCONSTRUCTIONOFFICE, WHENPRACTICALPERIMETER SITE FENCING-6FT CHAIN LINK -MESH SCREENING-SOUND BLANKETS TO12FT HIGH DURINGMICROPILE / EXCAVATIONeal:6FT
16FTFENCING DETAIL6FT CHAIN LINKTEMPSTRUCTURESOUND ABSORBINGBLANKETSFOOD WASTEBEARPROOFTRACK PAD (TYPICAL)RED HATCHED AREAINDICATES 1000PSF MAX SOILLOADING PRIOR TO BACKFILLPUMP TRUCK AND REDI MIX STAGINGDURING POURS. THESE 3SPACESMAY BEUSED FORCRANING,CONCRETEPOUR,OTHERDAILYACTIVITIESWITH SHORT DURATIONENCROACHMENTPERMITS12'EXHIBIT B01/16/2018
Residence433 West Bleeker StreetAspen, ColoradoTemporary Micropile Wall*GRADE-1. Temporary Micropile Wall - CoverGRADE-2. Temporary Micropile Wall - LocationGRADE-3. Temporary Micropile Wall - ProfileGRADE-4. Temporary Micropile Wall - General NotesGRADE-5. Temporary Micropile Wall - SectionsGRADE-6. Temporary Micropile Wall - Typical Sections and Details* These plans and specifications are designed to provide temporary excavation support with a finite design life during construction operations.Long-term earth pressure loads shall be included in the structural design.Temporary Micropile WallCoverJuly 14, 2017Residence433 West Bleeker Street266 Red Cliff Circle Glenwood Springs, CO 81601Phone: (970) 230-920817-039G-D1GRADE-1of 6RDJProject Number:Date:Sheet Number:Prepared by:Project:Set RevisionsDateRevision/IssuePrepared byB&Y Drilling, Inc.Designed For:Sheets GRADE-2 and 3RDJ07.17.17Seal:Sheet GRADE-4RDJ11.14.1701/16/2018
Proposed MicropileCap LocationMicropile WallStart/End WallMicropile WallTurn Line 1Micropile WallTurn Lines 2 and 3Micropile WallTurn Line 4Micropile WallTurn Line 5Micropile WallTurn Line 6Micropile WallTurn Lines 7 and 8Micropile WallTurn Line 9Micropile WallTurn Line 10Micropile WallTurn Lines 11 and 12Micropile WallTurn Line 13Micropile WallTurn Lines 14 and 150+20
0+40
0+60
0+80
1+001+201+401+601+802+002+202+402+602+803+003+200+90GRADE-50+50
GRADE-5
1+70GRADE-52+55GRADE-52+90GRADE-5Temporary Micropile WallLocationJuly 14, 2017Residence433 West Bleeker Street17-039G-D1GRADE-2of 6RDJProject Number:Date:Sheet Number:Prepared by:Project:Sheet RevisionsDateRevision/IssuePrepared byB&Y Drilling, Inc.Designed For:Stations 1+87 to 1+93 changed to System 2RDJ07.17.17Seal:NSCALE: 1" = 5'502.55Notes:1. Base plan by Thunderbowl Architect dated 06-29-17.2. Micropile wall shall be constructed entirely within property boundaries.266 Red Cliff Circle Glenwood Springs, CO 81601Phone: (970) 230-920801/16/2018
TOW = 7919.17 to 7917.4279107920790078907880Elevation (feet)0+00.0 Start WallSystem 1EG = 7912.0TOW = 7912.0BOE = 7898.00+50 7930Existing GradeBottom of Excavation(BOE)Micropile WallCapTemporary Slopeat 1.5H:1V1+00
1+50
2+00
2+50
0+51.4 Change SystemSystem 1 to 2EG = 7912.0TOW = 7912.0BOE = 7898.00+59.4 Change SystemSystem 2 to 1EG = 7912.0TOW = 7912.0BOE = 7898.0
0+86.6 Turn Line 1
Change System 1 to 3
EG = 7912.0
Step TOW = 7912.0 to 7910.0
BOE = 7898.0
1+11.4 Turn Line 2
System 3
EG = 7911.0
TOW = 7909.0
BOE = 7898.0
1+18.2 Turn Line 3
System 3
EG = 7910.6
TOW = 7908.6
BOE = 7898.0
1+29.2 Turn Line 4
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
1+45.0 Turn Line 5
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
1+60.0 Turn Line 6
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
1+76.6 Turn Line 7
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
1+79.3 Turn Line 8
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
1+87.8 Turn Line 9
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
2+01.3 Turn Line 10
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
2+18.9 Turn Line 11
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
2+24.6 Turn Line 12
System 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
2+32.8 Turn Line 13
Change System 3 to 4
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
2+50.5 Turn Line 14
System 4
EG = 7910.0
Step TOW = 7908.0 to 7910.0
BOE = 7898.0
2+63.8 Turn Line 15
System 4
EG = 7910.0
TOW = 7910.0
BOE = 7898.0
STA: 2+70 MATCH LINE
THIS SHEET
1+87.2 Change System
System 3 to 2
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
1+93.1 Change System
System 2 to 3
EG = 7910.0
TOW = 7908.0
BOE = 7898.079107920790078907880Elevation (feet)7930Existing Grade3+00
3+21.5 End Wall
System 5
EG = 7912.0
TOW = 7912.0
BOE = 7898.0
STA: 2+70 MATCH LINE
THIS SHEET
Bottom of Excavation(BOE)2+78.0 Change System
Change System 4 to 5
EG = 7910.0
TOW = 7908.0
BOE = 7898.0
Temporary Micropile WallProfileJuly 14, 2017Residence433 West Bleeker Street17-039G-D1GRADE-3of 6RDJProject Number:Date:Sheet Number:Prepared by:Project:Sheet RevisionsDateRevision/IssuePrepared byB&Y Drilling, Inc.Designed For:Seal:Stations 1+87 to 1+93 changed to System 2RDJ07.17.17266 Red Cliff Circle Glenwood Springs, CO 81601Phone: (970) 230-9208SCALE:HORIZONTAL 1" = 10'VERTICAL1" = 10'ABBREVIATIONS:EG - Existing GradeTOW - Top of WallBOE - Bottom of Excavation01/16/2018
1.0 Temporary Micropile Wall Materials1.1 Micropile bars - Williams 32 Injection Bars or equivalent (System 3 - Battered Micropiles)Williams 38 Injection Bars or equivalent (Systems 1 and 3 - Vertical Micropiles)Williams 51 Injection Bars or equivalent (System 2 - Vertical Micropiles)fy=85,000 psi1.2 Grout - Grout may be neat-cement or with sand, with Type II cement in accordance with ASTM C150. Water-cement ratio should be between 0.4 and 0.6. f'c=3,000 psi (28-day strength)1.3 End hardware - Nuts shall be in accordance with manufacturer's recommendations. Bearing plate shall be in accordance with ASTM A36, Grade 36.1.4 Concrete - Concrete mix shall consist of Type II cement in accordance with ASTM C150, potable water and normal weight aggregate in accordance withASTM C33. Air entrainment is not required. Admixtures, if used, should be non-corrosive to steel. f'c=3,000 psi (28-day strength)1.5 Cap reinforcement shall be in accordance with ASTM A615. fy=60,000 psi2.0 Micropile Wall Construction Sequence2.1 Install micropiles at the locations and to the lengths shown on the plans. Micropile injection bars shall be installed per manufacturers recommendations.Micropile locations may vary by up to 3".2.2 Install end hardware and reinforcing bars as shown on the drawings.2.3 Pour concrete cap to the minimum thickness shown on the drawings and to attain the minimum coverages specified herein. Cold weather protectionmeasures may be necessary.2.4 After concrete and grout has attained 80% of specified strength, complete excavation to full depth of wall not to exceed maximum wall heights as shown onthe drawings. Excavation shall extend to grout/micropile columns (cap may be undermined). Soil should not be left between excavation face andgrout/micropile columns.3.0 Temporary Micropile Wall Design Parameters3.1 The micropile shoring was designed in general accordance with procedures contained in the FHWA "Micropile Design and Construction Reference Manual",Publication No. FHWA NHI-05-039, December 2005.3.2 The following strength parameters were assumed for the subsoils based on the "Soils and Foundation Investigation, Tycher Residence, 433 West BleekerStreet, Lot 2, Strandberg Lot Split, Aspen, Colorado" by CTL Thompson, Job No. GS04951-120, report dated March 13, 2007. The following values were assumed for soil design parameters:IJ (deg) (psf) (pcf)Sand and Gravel 36100 130 An experienced geotechnical engineer should verify the above design parameters during construction.3.3 Global Factor of Safety = 1.3 min. per City of Aspen standards3.4 No groundwater table was assumed. If groundwater is encountered during excavation, the excavation shall not continue and the site shall be dewatered tobelow the base of planned excavation elevation prior to completion of the excavation.3.5 The micropile walls lateral deflection may range from 0 to 2 inches. The design calculations show there will be no adverse deflection of the ground surface atthe property line based on anticipated subsurface conditions.3.6 There will be no adverse effects including potential deflection on any adjacent properties based on anticipated subsurface conditions.3.7 The shoring systems are designed to accommodate normal highway vehicle loading such as passenger vehicles, trash trucks and delivery vehicles. Theshoring systems are designed to accommodate construction traffic, equipment and material storage within 8 feet of the micropile cap that applies a groundsurface loading of 1,000 psf or less. Loads in excess of 1,000 psf should be placed at least 8 feet from micropile caps.4.0 Special Provisions4.1 Wall geometry used in design was based on plans provided by Thunderbowl Architects.4.2 This design is valid only for B&Y Drilling, Inc. at the subject site.4.3 Excavation shall extend to micropile columns. During the excavation process, material should not be left between the excavation face and the grout/micropilecolumn.4.4 The micropile wall designs are valid only for dry surface and subsurface conditions. If surface water or groundwater is encountered during excavation orinstallation, RJ Engineering should be notified immediately and the wall may be redesigned at the discretion of RJ Engineering. Surface and subsurfacedrainage from adjacent properties should not be discharged at the top or through the micropile wall. Saturated soils may result in materials piping out frombetween micropiles resulting in failure and/or excessive wall movements.4.5 The design life on this micropile wall is 12 weeks. Design life is defined by the beginning of excavation to backfill completion of the foundation wall. If theduration of the project exceeds the 12 week duration, RJ Engineering shall be contacted to evaluate the performance of the system and determine if thedesign life can be extended.4.6 RJ Engineering is not responsible for maintaining slope stability above and below the micropile wall during construction.4.7 There appears to be no known utility conflicts with installation of the micropile walls. Utility locations presented shall be field verified prior to micropile wallinstallation.4.8 RJ Engineering is not responsible for quality control, quality assurance, changed conditions or problems resulting from improper construction techniques.4.9 RJ Engineering is not responsible for construction site safety.4.10 RJ Engineering is not responsible for wall layout. General contractor or representative of the general contractor is responsible for micropile wall layout.4.11 Observation of micropile wall installation should be performed by a qualified engineer. Inspection and/or monitoring of the micropile wall after completion ofexcavation should be performed. The frequency and duration of the observation and monitoring shall be determined by the qualified engineer. Thequalified engineer shall have experience with design and installation of micropile wall systems using injection bars. Observations shall be made at least ona weekly basis during installation and during the service life of the system.Temporary Micropile WallGeneral NotesJuly 14, 2017Residence433 West Bleeker Street17-039G-D1GRADE-4of 6RDJProject Number:Date:Sheet Number:Prepared by:Project:Sheet RevisionsDateRevision/IssuePrepared byB&Y Drilling, Inc.Designed For:Revised Note 3.7RDJ11.14.17Seal:266 Red Cliff Circle Glenwood Springs, CO 81601Phone: (970) 230-920801/16/2018
WEST SIDEStation 0+50System 1NORTH SIDEStation 0+90System 3EAST SIDEStation 1+70System 3EAST SIDEStation 2+55System 4SOUTH SIDEStation 2+90System 5Temporary Micropile WallSectionsJuly 14, 2017Residence433 West Bleeker Street17-039G-D1GRADE-5of 6RDJProject Number:Date:Sheet Number:Prepared by:Project:Sheet RevisionsDateRevision/IssuePrepared byB&Y Drilling, Inc.Designed For:Seal:Notes:1. The micropile wall and slopes shall be constructed entirely within property boundaries.266 Red Cliff Circle Glenwood Springs, CO 81601Phone: (970) 230-9208SCALE:HORIZONTAL 1" = 10'VERTICAL1" = 10'ABBREVIATIONSEG - Existing GradeTOW - Top of WallBOE - Bottom of Excavation01/16/2018
Injection BarField Installed GroutMICROPILE CROSSSECTION A-A'BoreholeMICROPILE BEARING PLATEFRONT VIEW6"Micropile Hole Diameter= Bar Diameter +1/4"6"1/2" MinHex NutBearing PlateMICROPILE DETAILGroutA'AWilliams Injection Bar6" Min9"ColumnMICROPILE BEARING PLATESIDE VIEWCross Bar,24" OCVertical PileMICROPILE CAP PLAN VIEWVERTICAL SYSTEMSYSTEMS 1, 4 AND 5MICROPILE CAP CROSS SECTIONVERTICAL SYSTEMSYSTEMS 1, 4 AND 512"18"Cross Bar, #4 RebarContinuous Waler,#4 Rebar3"2" min.3,000 psi ConcreteGroutVertical PileContinuous Waler,#4 RebarNotes: Vertical piles 12" center to center withback row at 12" offset12"12"Continuous Waler,#4 RebarContinuous Waler,#4 RebarCross Bar,24" OCVertical PileMICROPILE CAP PLAN VIEWVERTICAL SYSTEMSYSTEM 2MICROPILE CAP CROSS SECTIONVERTICAL SYSTEMSYSTEM 212"6"Cross Bar, #4 RebarContinuous Waler,#4 Rebar3"2" min.3,000 psi ConcreteGroutContinuous Waler,#4 RebarNotes: Horizontal reinforcement shall becontinuous between Systems 2 and 3Continuous Waler,#4 RebarContinuous Waler,#4 RebarVARIESPROPOSED EXCAVATIONRL=15'RL=20'WILLIAMS 32mmINJECTION BARWILLIAMS 38mmINJECTION BARPROPOSED TEMPORARYEXCAVATION AT 1.5H:1VTYPICAL SECTIONSYSTEM 314.0' MAX. CUT2' MAX.DH=14.0' MAX.5'8"MICROPILE CAPSEE DETAILSEXISTING GRADEBOTTOM OF EXCAVATION(SEE SHEET GRADE-3)SEE SHEET GRADE-3 FORTOP OF CAP/WALL EL.TYPICAL SECTIONSYSTEM 114.0' MAX CUTEXISTING GRADEPROPOSED EXCAVATIONRL=20'MICROPILE CAPSEE DETAILSDH=14.0' MAX.WILLIAMS 38mm INJECTION BARBOTTOM OF EXCAVATION(SEE SHEET GRADE-3)SEE SHEET GRADE-3 FORTOP OF CAP/WALL EL.TYPICAL SECTIONSYSTEM 214.0' MAX. CUTPROPOSED EXCAVATIONRL=20'MICROPILE CAPSEE DETAILSWILLIAMS 51mm INJECTIONEXISTING GRADEBOTTOM OF EXCAVATION(SEE SHEET GRADE-3)DH = 14.0' MAX.SEE SHEET GRADE-3 FORTOP OF CAP/WALL EL.Cross bar,36" OCContinuous waler,#4 rebarVertical pile12"18"36"Cross bar, #4 RebarContinuous Waler,#4 Rebar3"2" min.3,000 psi ConcreteGroutContinuous Waler,#4 RebarBattered pileBattered pileVertical pile18"18"Continuous waler,#4 rebar36"Notes: Vertical pile 18" center to center Battered pile 36" center to centerMICROPILE CAP PLAN VIEWBATTERED SYSTEMSYSTEM 3MICROPILE CAP CROSS SECTIONBATTERED SYSTEMSYSTEM 3TYPICAL SECTIONSYSTEM 414.0' MAX CUTEXISTING GRADEVARIESPROPOSED EXCAVATIONRL=25'MICROPILE CAPSEE DETAILSVARIES2' MAX.DH = 14.0' MAX.WILLIAMS 51mm INJECTION BARBOTTOM OF EXCAVATION(SEE SHEET GRADE-3)SEE SHEET GRADE-3 FORTOP OF CAP/WALL EL.PROPOSED TEMPORARYEXCAVATION AT 1.5H:1VTYPICAL SECTIONSYSTEM 514.0' MAX CUTPROPOSED EXCAVATIONRL=20'MICROPILE CAPSEE DETAILSDH=14.0' MAX.WILLIAMS 51mm INJECTION BARBOTTOM OF EXCAVATION(SEE SHEET GRADE-3)SEE SHEET GRADE-3 FORTOP OF CAP/WALL EL.EXISTING GRADETemporary Micropile WallTypical Sections and DetailsJuly 14, 2017Residence433 West Bleeker Street17-039G-D1GRADE-6of 6RDJProject Number:Date:Sheet Number:Prepared by:Project:Sheet RevisionsDateRevision/IssuePrepared byB&Y Drilling, Inc.Designed For:Seal:NOT TO SCALEAbbreviations:RL - Reinforcement LengthDH - Design Height266 Red Cliff Circle Glenwood Springs, CO 81601Phone: (970) 230-9208NOTES:1. See Sheet GRADE-3 for top of wall/cap and bottom of excavation elevations.01/16/2018
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Environmental Noise Control
Introduction 0
433 West Bleeker Street
Construction Noise Modeling
Report
Prepared for:
Kaegebein Fine Homebuilding
P.O. Box 1570
Carbondale, Colorado 81623
Prepared by:
Behrens and Associates, Inc.
13806 Inglewood Avenue
Hawthorne, California 90250
Antonio King
Staff Acoustical Engineer
Jason Peetz
Engineering Manager
December 8, 2017
Corporate Office: Hawthorne, California
Carson, California ~ Aledo, Texas ~ Napa California ~ Longmont, Colorado ~ McDonald, Pennsylvania
Phone 800-679-8633 ~ Fax 310-331-1538
www.environmental-noise-control.com ~ www.drillingnoisecontrol.com
EXHIBIT C
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Introduction 1
1. Introduction
The purpose of this study is to provide a noise modeling assessment of the proposed soil stabilization and excavation
activities associated with the Kaegebein Fine Homebuilding construction project located at 433 West Bleeker Street
in Aspen, Colorado. The assessment was performed to ensure the noise levels generated during the soil stabilization
and excavation activities are in compliance with the noise standards described in the City of Aspen Construction
Management Plan Requirements (April 2016).
This report provides the results of the predicted unmitigated and mitigated soil stabilization and excavation noise
levels relative to the relevant noise standards as well as mitigation recommendations needed to comply with the
allowable noise levels. Figure 1-1 shows the project site within the City of Aspen.
Figure 1-1 433 West Bleeker Street Project Site
Project Site
Location
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Noise Fundamentals 2
2. Noise Fundamentals
Sound is most commonly experienced by people as pressure waves passing through air. These rapid fluctuations in
air pressure are processed by the human auditory system to produce the sensation of sound. The rate at which sound
pressure changes occur is called the frequency. Frequency is usually measured as the number of oscillations per
second or Hertz (Hz). Frequencies that can be heard by a healthy human ear range from approximately 20 Hz to
20,000 Hz. Toward the lower end of this range are low-pitched sounds, including those that might be described as a
“rumble” or “boom”. At the higher end of the range are high-pitched sounds that might be described as a “screech”
or “hiss”.
Environmental noise generally derives, in part, from a combination of distant noise sources. Such sources may include
common experiences such as distant traffic, wind in trees, and distant industrial or farming activities. These distant
sources create a low-level "background noise" in which no particular individual source is identifiable. Background
noise is often relatively constant from moment to moment, but varies slowly from hour to hour as natural forces
change or as human activity follows its daily cycle.
Superimposed on this low-level, slowly varying background noise is a succession of identifiable noisy events of
relatively brief duration. These events may include the passing of single-vehicles, aircraft flyovers, screeching of
brakes, and other short-term events. The presence of these short-term events causes the noise level to fluctuate.
Typical indoor and outdoor A-weighted sound levels are shown in Figure 2-1. Detailed acoustical definitions have
been provided in Appendix A – Glossary of Acoustical Terms.
Figure 2-1 Typical Indoor and Outdoor A-Weighted Sound Levels
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Noise Standards 3
3. Noise Standards
The applicable noise guidelines for the project are contained within the City of Aspen Construction Management
Plan Requirements Manual (April 2016). Chapter 11.3: Noise Limits and Suppression Requirements provides the
following noise limits:
• 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 31st.
The proposed construction activities are expected to fall within the Off Season Time Frame, therefore, the analysis
was conducted to ensure compliance with the 80 dBA maximum allowable noise levels. The A-weighting scale has
been interpreted as applicable to the noise limit to better represent the response to sound of human hearing.
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Soil Stabilization and Excavation Noise Modeling 4
4. Soil Stabilization and Excavation Noise Modeling
Noise models representing the proposed construction activities were constructed with the use of three-dimensional
computer noise modeling software. All models in this report were developed with SoundPLAN 8.0 software using
the ISO 9613-2 standard. Noise levels are predicted based on the locations, noise levels and frequency spectra of the
noise sources, and the geometry and reflective properties of the local terrain, buildings and barriers. SoundPLAN 8.0
software simulates light downwind conditions in all directions to ensure conservative assessments. The modeling
results predicted are dependent on equipment and mitigation orientation as indicated. Actual field sound level
measurements may vary from the modeled noise levels due to other noise sources such as traffic, other facilities,
other human activity, or environmental factors.
4.1 Modeled Soil Stabilization and Excavation Activities
The proposed construction activities consist of micropiling and excavation. Noise models representing the
micropiling and excavation activities were created to predict the noise levels at the site and adjacent surroundings.
The construction activities were modeled at two locations along the proposed micropiling route for the site as shown
in Figure 4-1. The sound power levels for the micropiling and excavation equipment included in the modeling are
listed in Table 4-1.
Sound level data utilized in the micropiling models was based on file data of the Furukawa HCR 900 and associated
components. Equipment placement and orientation was coordinated with Kaegebein Fine Homebuilding and oriented
to minimize noise impact when possible. The predicted modeling results are dependent on equipment and mitigation
orientation as indicated.
Sound level data utilized in the excavation models was based on file data equivalent to the Caterpillar 336 Excavator.
Equipment placement and orientation was coordinated with Kaegebein Fine Homebuilding and oriented to minimize
noise impact when possible. The predicted modeling results are dependent on equipment and mitigation orientation
as indicated.
Table 4-1 Modeled Construction Equipment Sound Power Levels
Modeled Equipment Activity Quantity Individual Component
Sound Power Level (dBA)
Furukawa HCR 900 Micropiling 1 113.8
Top Drive Engine Micropiling 1 111.5
Air Compressor Micropiling 1 105.3
Caterpillar 336 Excavator Excavation 1 109.5
The receiver locations where the noise level was evaluated have been chosen to be consistent with the requirements
of The City of Aspen Construction Management Plan. The requirements indicate that noise levels shall comply with
the applicable noise limits as measured at the project property line. Equipment locations 1 and 2 represent the closest
points from the equipment to the property lines, or the loudest points along the property line, and were modeled to
assess the noise levels. The project property lines, modeled receiver locations, and modeled equipment locations are
shown in Figure 4-1.
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Soil Stabilization and Excavation Noise Modeling 5
Figure 4-1 Modeled Equipment Locations and Property Line Receivers
Micropiling Line
Property Line
Receiver 1
Receiver 2
Receiver 3
Receiver 6
Receiver 7
Receiver 4
Receiver 8 Receiver 9
Receiver 5
Modeled
Equipment
Location 1
Modeled
Equipment
Location 2
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Soil Stabilization and Excavation Noise Modeling 6
4.2 Unmitigated Noise Modeling Results and Assessment
The results of the unmitigated noise modeling are presented in Table 4-2. The noise assessment locations in the table
correspond to the locations shown in Figure 4-1. The predicted noise levels represent only the contribution of the
proposed construction activities and do not include ambient noise or noise from other facilities. The results of the
unmitigated noise modeling are also shown as noise contour maps. Figure 4-2 shows the Unmitigated Location 1
Excavation Noise Contour Map in dBA, Figure 4-3 shows the Unmitigated Location 2 Excavation Noise Contour
Map in dBA, Figure 4-4 shows the Unmitigated Location 1 Micropiling Noise Contour Map in dBA, and Figure 4-5
shows the Unmitigated Location 2 Micropiling Noise Contour Map in dBA. The noise contours are provided in 5 dB
increments with the color scale indicating the sound level of each contour.
Table 4-2 Unmitigated Construction Noise Levels
Location
Excavation
Location 1
(dBA)
Excavation
Location 2
(dBA)
Micropiling
Location 1
(dBA)
Micropiling
Location 2
(dBA)
Property Line Receiver 1 70.0 75.0 75.7 83.0
Property Line Receiver 2 70.1 72.6 75.8 81.1
Property Line Receiver 3 75.1 74.9 79.3 84.0
Property Line Receiver 4 95.7 75.4 95.1 81.5
Property Line Receiver 5 83.2 74.1 91.4 79.6
Property Line Receiver 6 76.2 75.8 85.5 79.9
Property Line Receiver 7 76.1 80.3 84.5 83.2
Property Line Receiver 8 75.3 93.9 81.5 94.6
Property Line Receiver 9 73.5 82.4 79.3 89.9
Allowable Limit at Property Line 80.0
The results of the unmitigated noise modeling predict that the micropiling and excavation noise levels will exceed
the allowable City of Aspen Construction Noise Limits at several locations along the property line. As a result, noise
mitigation is recommended to reduce the noise levels to below the stated limits.
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Soil Stabilization and Excavation Noise Modeling 7
Figure 4-2 Unmitigated Location 1 Excavation Noise Contour Map (dBA)
Property Line Receiver 4
95.7 dBA
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Soil Stabilization and Excavation Noise Modeling 8
Figure 4-3 Unmitigated Location 2 Excavation Noise Contour Map (dBA)
Property Line Receiver 8
93.9 dBA
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Soil Stabilization and Excavation Noise Modeling 9
Figure 4-4 Unmitigated Location 1 Micropiling Noise Contour Map (dBA)
Property Line Receiver 4
95.1 dBA
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Soil Stabilization and Excavation Noise Modeling 10
Figure 4-5 Unmitigated Location 2 Micropiling Noise Contour Map (dBA)
Property Line Receiver 8
94.6 dBA
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Soil Stabilization and Excavation Noise Modeling 11
4.3 Noise Mitigation Recommendations
Noise levels were assessed at the project site property line in accordance with City of Aspen noise regulations. The
proposed construction activities were evaluated at multiple locations along the proposed micropiling route, however,
only two locations are represented in this report. Equipment Locations 1 and 2 represent operational areas nearest the
property line which are also locations closest to the neighboring houses on the east and west sides of the project site.
The following mitigation measure is recommended at the construction site to comply with the 80 dBA noise limit:
• Approximately 320 linear feet of 12-foot high acoustical barrier panels with a Sound Transmission Class
(STC) rating of at least 25 installed around the project site as shown in Error! Reference source not found.6.
Additional mitigation recommendations for construction sites are listed below:
1. All equipment should be switched off when not in use.
2. All equipment should be kept in good repair with all worn, loose and unbalanced machine parts to be replaced.
3. Equipment should be placed to maximize the distance between the noisy equipment and the neighboring
houses.
4. Construction operations are limited to the hours of 7:30 am to 5:30 pm Monday through Friday and 9:00 am
to 5:00 pm on Saturday. Construction on Sunday is prohibited.
5. “Residential” grade mufflers should be fitted to the exhaust outlets of all combustion engines.
6. Where possible, broadband white noise reversing alarms should be used in place of tonal reversing alarms
on trucks within the construction site.
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Soil Stabilization and Excavation Noise Modeling 12
Figure 4-6 Modeled Mitigation Layout – Locations 1 & 2
Micropiling Line
320 ft. of 12-foot-high STC-25
Portable Acoustical Panels
Modeled
Equipment
Location 1
Modeled
Equipment
Location 2
Note: Both locations represented are for layout purposes
only and do not reflect simultaneous operations.
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Soil Stabilization and Excavation Noise Modeling 13
4.4 Mitigated Noise Modeling Results and Assessment
The results of the noise modeling with the inclusion of the noise mitigation recommendations are presented in Table
4-3. The noise assessment locations in the table correspond to the locations shown in Figure 4-1. The calculated noise
levels represent only the contribution of the proposed construction activities and do not include ambient noise or
noise from other facilities. The results of the mitigated noise modeling are also shown as noise contour maps. Figure
4-7 shows the Mitigated Location 1 Excavation Noise Contour Map in dBA, Figure 4-8 shows the Mitigated Location
2 Excavation Noise Contour Map in dBA, Figure 4-9 shows the Mitigated Location 1 Micropiling Noise Contour
Map in dBA, and Figure 4-10 shows the Mitigated Location 2 Micropiling Noise Contour Map in dBA. The noise
contours are provided in 5 dB increments with the color scale indicating the sound level of each contour.
Table 4-3 Mitigated Construction Noise Levels
Location
Excavation
Location 1
(dBA)
Excavation
Location 2
(dBA)
Micropiling
Location 1
(dBA)
Micropiling
Location 2
(dBA)
Property Line Receiver 1 55.3 58.8 60.7 65.3
Property Line Receiver 2 55.4 57.6 60.5 64.5
Property Line Receiver 3 61.5 59.0 65.0 66.6
Property Line Receiver 4 76.8 58.3 77.5 64.4
Property Line Receiver 5 66.6 59.4 73.5 64.0
Property Line Receiver 6 62.0 61.1 68.3 64.1
Property Line Receiver 7 61.4 64.5 68.2 67.9
Property Line Receiver 8 59.5 75.6 64.9 76.3
Property Line Receiver 9 58.3 65.8 63.4 71.6
Allowable Limit at Property Line 80.0
The mitigated noise modeling results predict that the micropiling and excavation noise levels will comply with the
80 dBA noise limit established in the City of Aspen Construction Noise Limits with installation of the recommended
mitigation measures.
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Soil Stabilization and Excavation Noise Modeling 14
Figure 4-7 Mitigated Location 1 Excavation Noise Contour Map (dBA)
Property Line Receiver 4
76.8 dBA
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Soil Stabilization and Excavation Noise Modeling 15
Figure 4-8 Mitigated Location 2 Excavation Noise Contour Map (dBA)
Property Line Receiver 8
75.6 dBA
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Soil Stabilization and Excavation Noise Modeling 16
Figure 4-9 Mitigated Location 1 Micropiling Noise Contour Map (dBA)
Property Line Receiver 4
77.5 dBA
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Soil Stabilization and Excavation Noise Modeling 17
Figure 4-10 Mitigated Location 2 Micropiling Noise Contour Map (dBA)
Property Line Receiver 8
76.3 dBA
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Conclusion 18
5. Conclusion
Noise models representing the proposed soil stabilization and excavation activities at the 433 West Bleeker
Street project site were created to assess the noise impact against the 80 dBA noise limits established in the
City of Aspen Construction Management Plan Requirements Manual (April 2016). The unmitigated models
predicted that the micropiling and excavation activities would generate noise levels in excess of 80 dBA at
several locations and would, therefore, require sound mitigation.
12-foot high portable acoustical panels with an STC rating of at least 25 were added along the northern,
eastern, southern and western perimeter of the site. The resulting mitigated models demonstrated that with
installation of the recommended mitigation, the proposed construction activities are predicted to comply
with the noise limit of 80 dBA as established by the City of Aspen Construction Management Plan.
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Glossary of Acoustical Terms 19
Appendix A - Glossary of Acoustical Terms
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Glossary of Acoustical Terms 20
Ambient Noise
The all-encompassing noise associated with a given environment at a specified time, usually a composite of sound
from many sources both near and far.
Average Sound Level
See Equivalent-Continuous Sound Level
A-Weighted Sound Level, dB(A)
The sound level obtained by use of A-weighting. Weighting systems were developed to measure sound ina way that
more closely mimics the ear’s natural sensitivity relative to frequency so that the instrument is less sensitive to noise
at frequencies where the human ear is less sensitive and more sensitive at frequencies where the human ear is more
sensitive.
C-Weighted Sound Level, dBC
The sound level obtained by use of C-weighting. Follows the frequency sensitivity of the human ear at very high
noise levels. The C-weighting scale is quite flat and therefore includes much more of the low-frequency range of
sounds than the A and B scales. In some jurisdictions, C-weighted sound limits are used to limit the low-frequency
content of noise sources.
Community Noise Equivalent Level (CNEL)
A 24-hour A-weighted average sound level which takes into account the fact that a given level of noise may be more
or less tolerable depending on when it occurs. The CNEL measure of noise exposure weights average hourly noise
levels by 5 dB for the evening hours (between 7:00 pm and 10:00 pm), and 10 dB between 10:00 pm and 7:00 am,
then combines the results with the daytime levels to produce the final CNEL value. It is measured in decibels, dB.
Day-Night Average Sound Level (Ldn)
A measure of noise exposure level that is similar to CNEL except that there is no weighting applied to the evening
hours of 7:00 pm to 10:00 pm. It is measured in decibels, dB.
Daytime Average Sound Level
The time-averaged A-weighted sound level measured between the hours of 7:00 am to 7:00 pm. It is measured in
decibels, dB.
Decibel (dB)
The basic unit of measurement for sound level.
Direct Sound
Sound that reaches a given location in a direct line from the source without any reflections.
Divergence
The spreading of sound waves from a source in a free field, resulting in a reduction in sound pressure level with
increasing distance from the source.
Energy Basis
This refers to the procedure of summing or averaging sound pressure levels on the basis of their squared pressures.
This method involves the conversion of decibels to pressures, then performing the necessary arithmetic calculations,
and finally changing the pressure back to decibels.
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Glossary of Acoustical Terms 21
Equivalent-Continuous Sound Level (Leq)
The average sound level measured over a specified time period. It is a single-number measure of time-varying noise
over a specified time period. It is the level of a steady sound that, in a stated time period and at a stated location, has
the same A-Weighted sound energy as the time-varying sound. For example, a person who experiences an Leq of 60
dB(A) for a period of 10 minutes standing next to a busy street is exposed to the same amount of sound energy as if
he had experienced a constant noise level of 60 dB(A) for 10 minutes rather than the time-varying traffic noise level.
Fast Response
A setting on the sound level meter that determines how sound levels are averaged over time. A fast sound level is
always more strongly influenced by recent sounds, and less influenced by sounds occurring in the distant past, than
the corresponding slow sound level. For the same non-steady sound, the maximum fast sound level is generally
greater than the corresponding maximum slow sound level. Fast response is typically used to measure impact sound
levels.
Field Impact Insulation Class (FIIC)
A single number rating similar to the impact insulation class except that the impact sound pressure levels are measured
in the field.
Field Sound Transmission Class (FSTC)
A single number rating similar to sound transmission class except that the transmission loss values used to derive this
class are measured in the field.
Flanking Sound Transmission
The transmission of sound from a room in which a source is located to an adjacent receiving room by paths other
than through the common partition. Also, the diffraction of noise around the ends of a barrier.
Frequency
The number of oscillations per second of a sound wave
Hourly Average Sound Level (HNL)
The equivalent-continuous sound level, Leq, over a 1-hour time period.
Impact Insulation Class (IIC)
A single number rating used to compare the effectiveness of floor/ceiling assemblies in providing reduction of impact-
generated sound such as the sound of a person’s walking across the upstairs floor.
Impact Noise
The noise that results when two objects collide.
Impulse Noise
Noise of a transient nature due to the sudden impulse of pressure like that created by a gunshot or balloon bursting.
Insertion Loss
The decrease in sound power level measured at the location of the receiver when an element (e.g., a noise barrier) is
inserted in the transmission path between the sound source and the receiver.
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Inverse Square Law
A rule by which the sound intensity varies inversely with the square of the distance from the source. This results in a
6dB decrease in sound pressure level for each doubling of distance from the source.
Ln Sound Level
Time-varying noise environments may be expressed in terms of the noise level that is exceeded for a certain
percentage of the total measurement time. These statistical noise levels are denoted Ln, where n is the percent of time.
For example, the L50 is the noise level exceeded for 50% of the time. For a 1-hour measurement period, the L50 would
be the noise level exceeded for a cumulative period of 30 minutes in that hour.
Masking
The process by which the threshold of hearing for one sound is raised by the presence of another sound.
Maximum Sound Level (Lmax)
The greatest sound level measured on a sound level meter during a designated time interval or event.
NC Curves (Noise Criterion Curves)
A system for rating the noisiness of an occupied indoor space. An actual octave-band spectrum is compared with a
set of standard NC curves to determine the NC level of the space.
Noise Reduction
The difference in sound pressure level between any two points.
Noise Reduction Coefficient (NRC)
A single number rating of the sound absorption properties of a material. It is the average of the sound absorption
coefficients at 250, 500, 1000, and 2000 Hz, rounded to the nearest multiple of 0.05.
Octave
The frequency interval between two sounds whose frequency ratio is 2. For example, the frequency interval between
500 Hz and 1,000 Hz is one octave.
Octave-Band Sound Level
For an octave frequency band, the sound pressure level of the sound contained within that band.
One-Third Octave
The frequency interval between two sounds whose frequency ratio is 2^(1/3). For example, the frequency interval
between 200 Hz and 250 Hz is one-third octave.
One-Third-Octave-Band Sound Level
For a one-third-octave frequency band, the sound pressure level of the sound contained within that band.
Outdoor-Indoor Transmission Class (OITC)
A single number rating used to compare the sound insulation properties of building façade elements. This rating is
designed to correlate with subjective impressions of the ability of façade elements to reduce the overall loudness of
ground and air transportation noise.
Peak Sound Level (Lpk)
The maximum instantaneous sound level during a stated time period or event.
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Pink Noise
Noise that has approximately equal intensities at each octave or one-third-octave band.
Point Source
A source that radiates sound as if from a single point.
RC Curves (Room Criterion Curves)
A system for rating the noisiness of an occupied indoor space. An actual octave-band spectrum is compared with a
set of standard RC curves to determine the RC level of the space.
Real-Time Analyzer (RTA)
An instrument for the determination of a sound spectrum.
Receiver
A person (or persons) or equipment which is affected by noise.
Reflected Sound
Sound that persists in an enclosed space as a result of repeated reflections or scattering. It does not include sound that
travels directly from the source without reflections.
Reverberation
The persistence of a sound in an enclosed or partially enclosed space after the source of the sound has stopped, due
to the repeated reflection of the sound waves.
Room Absorption
The total absorption within a room due to all objects, surfaces and air absorption within the room. It is measured in
Sabins or metric Sabins.
Slow Response
A setting on the sound level meter that determines how measured sound levels are averaged over time. A slow sound
level is more influenced by sounds occurring in the distant past that the corresponding fast sound level.
Sound
A physical disturbance in a medium (e.g., air) that is capable of being detected by the human ear.
Sound Absorption Coefficient
A measure of the sound-absorptive property of a material.
Sound Insulation
The capacity of a structure or element to prevent sound from reaching a receiver room either by absorption or
reflection.
Sound Level Meter (SLM)
An instrument used for the measurement of sound level, with a standard frequency-weighting and standard
exponentially weighted time averaging.
Sound Power Level
A physical measure of the amount of power a sound source radiates into the surrounding air. It is measured in decibels.
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Sound Pressure Level
A physical measure of the magnitude of a sound. It is related to the sound’s energy. The terms sound pressure level
and sound level are often used interchangeably.
Sound Transmission Class (STC)
A single number rating used to compare the sound insulation properties of walls, floors, ceilings, windows, or doors.
This rating is designed to correlate with subjective impressions of the ability of building elements to reduce the overall
loudness of speech, radio, television, and similar noise sources in offices and buildings.
Source Room
A room that contains a noise source or sources
Spectrum
The spectrum of a sound wave is a description of its resolution into components, each of different frequency and
usually different amplitude.
Tapping Machine
A device used in rating different floor constructions against impacts. It produces a series of impacts on the floor under
test, 10 times per second.
Tone
A sound with a distinct pitch
Transmission Loss (TL)
A property of a material or structure describing its ability to reduce the transmission of sound at a particular frequency
from one space to another. The higher the TL value the more effective the material or structure is in reducing sound
between two spaces. It is measured in decibels.
White Noise
Noise that has approximately equal intensities at all frequencies.
Windscreen
A porous covering for a microphone, designed to reduce the noise generated by the passage of wind over the
microphone.
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