Staiano Engineering, Inc.

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

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

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

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)

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

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 Evaluated—Berms, Equipment Enclosures, and Operational Modifications Hearing Testimony Provided Describing Methods and Findings, and Addressing Regulator and Community Concernsc