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Rail Yard Locomotive Operations Community Noise Assessment

Rail Yard Used for Locomotives Run Continuously at Night and Weekends Subject of Community Complaints
Performed Noise Measurements in Adjacent Community
Untended, Extended Measurements Made to Quantify Extent of Impacts
Short-Term, Third-Octave Band Sound Levels Sampled Repetitively to Differentiate Yard and Non-Yard Noise Sources
Noise Control Options Evaluatedfor Operations, Equipment, Facilities, and Yard-Perimeter Noise Barrier Considering Rail Yard Constraints
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Acoustical Test Facility Design

Requirement for Sound Power Level Testing to Customer Specification
Defined Acoustical Test Chamber Options for Equipment Manufacturer
Designed Reverberant Room Facility and Data Acquisition System

Test Chamber Qualified for Discrete Frequency Measurements per American National Standards (ANSI)
Room Calibrated via Reverberation Time Measurements
Determined Source Sound Power Emissions
Evaluated Compliance with Customer Specification
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Small-Arms Shooting Range Noise Evaluation

MilitaryPolice Training Facility Adjacent to Large Residential Development
Surveyed Ambient Noise to Differentiate Shooting and Non-Shooting Ambient Sources
Established Noise Assessment Criteria
Measured Firearm Sound Level Emissions
Mapped Range Noise Exposure Contours via U.S. Army Small-Arms Range Noise Assessment Model (SARNAM)
Evaluated Operational and Range Design Mitigation Options
Estimated Benefits of Individual Range Perimeter Noise Barriers
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Building Mechanical Equipment Testing

Measured Noise and Vibration with Respect to Manufacturer Specs, Building Occupant Requirements, and Environmental Criteria
Tested--Fans, Chillers, Cooling Towers, Rooftop Air Handlers, Diesel-Generator Sets
Mitigation Treatments Identified
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Tire-Pavement Noise Testing

Objective to Develop Quieter Pavement
Tests Performed at Minnesota DOT MnROAD Testing Facility and Laboratory
On-Board Sound Intensity (OBSI) Test Method per Standard Test Method for Measurement of TirePavement Sound Intensity (AASHTO Designation TP 76)
Conducted with ASTM P22560 R16 Standard Reference Test Tire (SRTT)
Acquired in Conjunction with Pavement Texture Profile via Laser Profilometer (ROSAN)
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Highway Traffic Noise Evaluations

Predicted Highway Traffic Noise at Dwellings and Noise-Sensitive Outdoor Areas
Assessed Impacts re Federal (23 CFR Part 772), State, County, and Local Criteria
Used Federal Highway Administration (FHWA) Traffic Noise Model (TNM) Computational Method
Evaluated Compliance with U.S. Dept. of Housing and Urban Development (HUD) FHAVA Noise Guidelines
Designed Noise Barriers (i.e., Berms andor Free-Standing Walls) to Mitigate Outdoor Impacts
Architectural Sound Isolation Analyzed with Respect to Indoor Criteria
Building Features for Interior Soundproofing Defined
Estimated Traffic Noise Exposure Contours
On-Site Noise Measured to Calibrate Noise Predictions
Expert Testimony Provided Documenting Procedures and Results
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Transit Line Noise Assessments Device

Assessed Noise and Vibration from Proposed Transit Projects with Light Rail Vehicles, Bus Rapid Transit (BRT), and Diesel Buses
Surveyed Existing Ambient Noise along Rights-of-Way
Measured Ambient Ground Vibration
Tested Noise Emissions from Rail Vehicles on Both Tangent Track and in Tight-Radius Curves
Measured Diesel Bus Noise Sound Levels
Assessed Noise Exposures with Respect to Federal Transit Administration (FTA) and American Public Transportation Association (APTA) Criteria
Evaluated Mitigation Options and Designed Noise Barrier Walls
Estimated Potential Vehicle Pass-By Noise Impacts to Recreational Land Uses
Identified Risk Impacts from Wheel Squeal and from Groundborne Vibration
Met with Public to Present Assessment Findings and Respond to Community Concerns
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Industrial Noise Assessments

Assessed: Surface Mining Extraction and Processing Facilities, Asphalt and Concrete Batching Plants, Construction Sites, Power Plants, and Trucking Facilities
Surveyed Existing Ambient Noise
Unattended Noise Monitors and Weather Station Recorded Conditions Continuously
Noise Emissions of Mobile Equipment and Fixed Plant Facilities Tested
Future Sound Levels Predicted
Exposures Compared to Federal, State, or Local Environmental Limits
Mitigation EvaluatedBerms, Equipment Enclosures, and Operational Modifications
Hearing Testimony Provided Describing Methods and Findings, and Addressing Regulator and Community Concernsc
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  • (Staiano Engineering, Inc.)
  • Rockville, MD 20851 map, United States
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