PORT OF MIAMI TUNNEL NOISE IMPACT OVERVIEW

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PORT OF MIAMI TUNNELNOISE IMPACT OVERVIEW

• CITY OF MIAMI BEACH
• March 10, 2008

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POM Tunnel Project Map
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Agenda

• Background Data Collection
• Compliance Levels
• Contract Documents
• Contract Requirements
• Monitoring
• Reporting
• Mitigation
• Penalties for Non-Compliance

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Background Data Collection

• Baseline Noise Measurements (June 2006)
• 5 Locations
• The Miami Childrens Museum (Watson Island)
• Jungle Island (Watson Island)
• Ichimura Miami-Japan Garden (Watson Island)
• Stella Maris Seamans Center (Dodge Island)
• Miami World Trade Center (Dodge Island)
• 3 Time Periods
• Daytime (7 AM 6 PM)
• Evening (6 PM 10 PM)
• Nighttime (10 PM 7 AM)

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Background Data Collection - Results

• Existing Noise Environment
• Traffic Noise from Interstate I-395
• Local Traffic
• Ship Terminal Activities
• Aircraft Overflights
• Measured Baseline Noise Levels
• Energy-averaged (Leq) noise levels ranged from
  low 50s to upper 60s dBA
• Shorter duration, more intrusive (L10) noise
  levels ranged from low 50s to low 70s dBA
• Steady background (L90) noise levels ranged from
  mid 40s to mid 60s dBA

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Background Data Collection - Results
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Noise Levels
Painful 150 dB rock music peak 140 dB
firearms, air raid siren, jet engine 130 dB
jackhammer 120 dB jet plane take-off Extremely
Loud 110 dB rock music, model airplane 106 dB
timpani and bass drum rolls 100 dB snowmobile,
chain saw, pneumatic drill 90 dB lawnmower,
shop tools, truck traffic Very Loud 80 dB alarm
clock, busy street 70 dB busy traffic, vacuum
cleaner 60 dB conversation, dishwasher Moderate
50 dB moderate rainfall 40 dB quiet
room Faint 30 dB whisper, quiet library
Existing L10 Noise Levels
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Noise Compliance Levels

• Baseline L10 5dBA at Lot Line
• Noise Certified Equipment
• Meets established maximum noise limits (Lmax) for
  specific equipment
• City of Miami Noise Ordinance 11483, Section 36-6

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Contract Documents

• Design and Construction Criteria
• Section 3.2.1.5.2 Noise Vibration
• Mandatory requirement
• Department Standard Specifications forRoad
  Bridge Construction
• Division II, Section 100
• Mandatory Requirement
• Construction Noise Control
• Section 01565
• Indicative Reference Document
• Appendix 6 - Performance Points Table
• Operation Maintenance

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Contract Requirements - Monitoring

• Full-Time Acoustical Engineer
• Noise Control Plan
• Predicts noise level over 6 month period
• Evaluates anticipated compliance with noise
  criteria limits at receptor locations
• List of Approved Construction Equipment
• Describes noise mitigation measures
• Commitments
• Measurements
• At least weekly at nearest receptor to
  construction activity
• Daytime Evening - Nighttime
• Complaint Investigation

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Contract Requirements - Reporting

• Noise Measurement Reports
• Weekly Submittal
• All noise levelmeasurements takenduring the
  previous week
• Construction ComplianceMonitoring
• Complaint ResponseInvestigations

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Contract Requirements - Mitigation

• Noise Barriers and Curtain Systems
• Site Configuration to Avoid Noise Sensitive
  Locations
• Attach Noise-Deadening Material to Intake/Exhaust
  Systems
• Reduce Duration of Impact or Vibratory Pile
  Driving
• Limit Use of PA Systems and Air/Gasoline Driven
  Hand Tools

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Penalties For Non-Compliance

• 1st Violation
• Written warning identifying violation and
  instructing Concessionaire to comply
• 2nd Violation
• Written Deficiency Report (DR) requiring the
  Concessionaire to demonstrate an understanding
  and commitment to adhere to the noise
  restrictions
• 3rd Violation
• Stop Work order with work only to resume
  contingent upon implementation of successful
  noise control measures

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Penalties For Non-Compliance

• 4th Violation
• Same as 3rd offense and with a non-recoverable
  monetary penalty of 5,000
• 5th Violation
• Same as 3rd offense and with a non-recoverable
  monetary penalty of 10,000
• 6th Violation
• Same as 3rd offense and with a non-recoverable
  monetary penalty of 25,000

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Construction Schedule

• 5 Year Construction Period beginning in 2008

• 2008
• Contractor Mobilization
• Final Design / Permitting
• Utility Relocation
• 2009
• U-Walls / Approaches
• Cut Cover Tunnel Segment
• Commence TBM Heading No. 1 (EB)
• POM Roadways Bridges

• 2010
• U-Walls / Approaches
• Cut Cover Tunnel Segment
• Commence TBM Heading No. 2 (WB)
• POM Roadways Bridges
• 2011 - 2012
• POM Roadways Bridges
• Support Facilities
• Complete Tunnel Roadways
• Tunnel Systems, Testing and Startup

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PORT OF MIAMI TUNNEL
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