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ACOUSTICS GROUP, INC.

 

Consultants in Acoustics, Noise & Vibration

 

Projects:

 

The Acoustics Group, Inc. (AGI) provides a broad spectrum of acoustical consulting, noise control engineering, and vibration assessment services to both the private and public sectors.

 

A listing of our recent projects is as follows with in depth details under the highlighted categories:

 

 

 

AIRCRAFT/AIRPORT NOISE

NOISE MODELING:

AGI utilizes the latest PC computer technology to perform statistical analyses, aircraft noise prediction, and generate noise level contours. AGI generates aircraft noise contours and, through the use of geographic information systems (GIS), predicts the number of people impacted by aircraft noise and presents this information in a computer-aided drawing format. We maintain the latest versions of the Federal Aviation Administration's (FAA) Integrated Noise Model (INM), Heliport Noise Model (HNM), and the U.S. Air Force's NOISEMAP and ROUTEMAP models. Additionally, AGI’s inventory of noise measurement instrumentation used to measure aircraft over flights and can be used to calibrate the computer models. This approach can allow for the most accurate assessment of aircraft noise.

ENVIRONMENTAL ASSESSMENT:

In recent years, AGI staff members previously participated in conducting environmental assessments of airport expansion projects for airport authorities, in the capacity of subcontractor to architectural and engineering firms, and for the FAA. We have also prepared assessments for runway expansions, construction of new runways, relocation of military flying units, airspace and airfield utilization, and other airport programs.

LAND USE STUDIES:

Noise analysis will often result in recommendations for land use controls. Our staff at AGI has experience in assessing population and business growth surrounding airports and can generate information on future land use patterns expected in the airport vicinity. These patterns are then used to identify major conflicts with foreseen environmental conditions and recommendations for improved land use controls are made. The interaction of noise contours with land-use patterns involves the utilization of a methodology developed by AGI staff. We are skilled in the use of GIS and the manipulation of census data, such as population, number of housing units, and land values, to be automatically calculated within the areas of a specified noise level contour. It further allows for quick environmental evaluations of alternative on-site airport layout plans during a master plan project.

HELIPORT ANALYSIS:

Heliport, helipad, and helistop analyses are quite different from that of analyses of airports or airfields. Helicopters have acoustical characteristics and problems which are inherent to their design and require specialized models and approaches to modeling. AGI utilizes the latest FAA Helicopter Noise Model (HNM) as a tool for describing the impulsiveness, propagation, and spectral characteristics of noise from different types of helicopters. Impact evaluation adjustments are also made based on the surrounding terrain, elevation of the helipad, and actual noise measurements. AGI staff previously conducted a helistop noise assessment study for a major television studio in the City of Glendale, California. For this study noise contours were generated based on existing and future flight tracks, operations, and operations profiles. Recommendations were provided to develop flight tracks that would minimize the impact on residential neighborhoods.

RECENT PROJECT EXPERIENCE IN AIRCRAFT NOISE:

AGI staff members have experience in preparing: Environmental Impact Statements (EIS), Environmental Assessments (EA), Heliport Evaluations, Master Planning Studies, Project Reports, and other airport noise and environmental studies related to aircraft noise. Several individual projects follow.

MCAS EL TORO TEST STAND, EL TORO:

AGI staff previously conducted ambient noise monitoring of F-15 and F-16 aircraft operations at El Toro Marine Corps Air Station. The resulting aircraft test stand and run-up facility design utilized our captured measurement data. The design of the test facility utilized our evaluation of the effect of speech interference on facilities as well as local noise criteria. The noise technical study recommended building construction details and configurations to reduce aircraft engine run-up noise. Our review of vendor noise control panels and building materials was used in determining the best approach for reducing the noise generated by test operations.

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MCHAS TUSTIN:

AGI staff previously conducted ambient noise monitoring of CH53E helicopters operations at the Tustin Air Station. We observed and monitored helicopter arrivals, departures, touch-and-go, and training to determine the noise exposure at adjacent commercial developments. The effect of speech interference was evaluated in terms of recognized noise criterion curves. Utilizing measured and predicted Sound Exposure Level (SEL), Maximum Noise Level, and CNEL, AGI staff previously recommended building shell modifications to insulate the effect of helicopter noise on commercial buildings.

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ORANGE COAST COLLEGE TEST STAND, COSTA MESA:

AGI staff members previously conducted ambient noise monitoring of aircraft operations at Orange Coast College’s Aircraft Test Stand. The resulting aircraft test stand and run-up facility design utilized our captured measurement data. The design of the test facility utilized our evaluation of the effect of speech interference on nearby classrooms as well as local noise. The noise technical study recommended barrier configurations and heights to reduce aircraft engine run-up noise. Our review of vendor noise control panels was used in determining the best approach to reducing the noise generated by test operations. 

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ENVIRONMENTAL ASSESSMENT FOR CONTINUED TRAINING AT AVON PARK AIR FORCE RANGE, FLORIDA:

Facility: Avon Park Air Force Range (AFR), Florida

Request: AGI Environmental assessment for continued training.

Role: Monitor noise-generating activities which include aircraft and helicopter operations in military training airspace, restricted areas, military operations areas (MOA), and military training routes (MTR). Investigation of noise generated by Army large caliber guns and demolition charges at the artillery ranges. Computer modeling performed with NOISEMAP to evaluate the sound exposure level (SEL) generated by aircraft overflights. Utilizing results from previous noise studies conducted for Avon Park AFR operations, and the computed SEL data, the noise and impact associated with the existing., future project, and project alternatives were evaluated.

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PROPOSED MISSION REALIGNMENT: 

Facility: MacDill Air Force Base (AFB), Florida

Request: AGI Environmental assessment to address and analyze the environmental effects of the realignment and relocation of aircraft to said facility. Under the proposed action for this project, the USAF would relocate the 43rd Air Refueling Group (43 ARG) and its 12 KC-135 R aircraft with associated personnel to MacDill AFB.

Role: A noise analysis was conducted using the Air Force’s NOISEMAP noise prediction model. An analysis of the potential noise generated by flight operations and engine run-ups for current conditions and the proposed action was performed and the associated contours were plotted. All nearby sensitive receptors were identified and sleep disturbance levels were calculated at various sites for all major aircraft operations. Noise effects at sensitive receptors in the surrounding areas were analyzed to identify any possible incompatible land use.

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ENVIRONMENTAL IMPACT STATEMENT (EIS) FOR THE RELOCATION OF THE KC-135 COMBAT CREW TRAINING SCHOOL, ALTUS AFB, OKLAHOMA:

Facility: (1) Midland International Airport, Texas (2) Will Rogers World Airport, Oklahoma (3) Tulsa International Airport, Oklahoma (4) Clinton Sherman Airport, Oklahoma (5) Altus AFB, Oklahoma.

Request: Environmental Impact Statement for relocation of the KC-135 Combat Crew Training School to Altus AFB.

Role: Assisted in preparation of EIS. The studies associated with this EIS included noise impact analysis for all aircraft operations at four airports (facilities 1-4).  On site collection at all four facilities were performed to quantify fixed and rotary-wing aircraft operations. Also collected were information about flight profiles, engine thrust settings, flight tracks, speeds, and other relevant data. The engine run-up pads were identified and information about duration and type of run-ups was gathered. The baseline and project noise contours were developed using the Air Force’s NOISEMAP noise prediction model and INM base files. All nearby sensitive receptors were identified, sleep disturbance levels were calculated at various sites for all major aircraft operations. Further, detailed analyses were performed to determine the ability of Altus AFB and the four airfields (and the airspace surrounding them) to maintain the aircraft operational requirements associated with the proposed action and other actions.

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ENVIRONMENTAL ASSESSMENT FOR THE SPECIALIZED UNDERGRADUATE PILOT TRAINING (SUPT) REDISTRIBUTION, RANDOLPH AFB, TEXAS: 

Facility: (1) Midland Randolph AFB (2) Columbus AFB (3) Vance AFB (4) Laughlin AFB (5) Reese AFB, (6) 11 Airports located in the states of Texas, Oklahoma, Kansas, Mississippi, Alabama, and Louisiana.

Request: Environmental Assessment for SUPT Redistribution to facilities 1-4 from Reese  AFB.

Role:  The studies associated with this EA included noise impact analysis for all aircraft operations at the four Air Force bases (facilities 1-4) and different airports (facility 6) that are used by the training aircraft on this project. On site collection at facilities 1-4 and 6 were performed to quantify fixed and rotary-wing aircraft operations. Also collected were information about flight profiles, engine thrust settings, flight tracks, speeds, and other relevant data. The engine run-up pads were identified and information about duration and type of run-ups was gathered. The baseline and project noise contours were developed using the FAA’s INM model, the Air Force’s NOISEMAP and ROUTEMAP noise prediction models for near airfields and MTRs, respectively. All nearby sensitive receptors were identified and sleep disturbance levels were calculated at various sites for all major aircraft operations.

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ENVIRONMENTAL IMPACT STATEMENT FOR THE DISPOSAL AND REUSE OF HOMESTEAD AFB, FLORIDA: 

Facility: Homestead AFB, Florida

Request: AGI staff previously prepared the noise sections of an Environmental Impact Statement (EIS) for the disposal and reuse of Homestead AFB.

Role: AGI staff previously utilized the NOISEMAP computer model to determine the noise impacts from various alternatives at future years. All nearby sensitive receptors were identified and sleep disturbance levels were calculated at various sites for all major aircraft operations. Surface traffic noise levels were also calculated at the sensitive locations adjacent to all major roads. Detailed studies were performed to determine any airspace and airfield operations impacts that could arise from the planned reuse of the base as a joint use public-military airport.

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INSTALLATION COMPATIBLE USE ZONE (ICUZ) FOR FORT DRUM ARMY INSTALLATION, NEW YORK:

Facility: Fort Drum military installation, New York

Request: Installation Compatible Use Zone for Fort Drum in conjunction with  Harland Bartholomew and Associates.

Role: The potential impacts on land adjacent to the installation were assessed for noise and accident potential zones. The Air Force’s NOISEMAP computer noise model was used to determine the noise impacts from fixed- and rotary-wing aircraft operations on the airfield and training areas. Noise contours for the installation’s aircraft operations, including airfield and training areas, were developed. Separate contours were developed for the fort’s scorable air-to-ground gunnery range that is used heavily by Air National Guard F-16 and A-10 aircraft. Land use guidelines, based on the noise contours, were recommended for the surrounding communities to minimize potential impacts.

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MCAS MIRAMAR TOP GUN ACADEMY SOUND INSULATION, MIRAMAR, CALIFORNIA:

Facility: Miramar Air Station’s Top Gun Academy, California

Request: Noise Technical Study

Role: Conducted ambient noise monitoring of jet aircraft operations at the facility to evaluate the existing noise environment within the classrooms. AGI generated a computer model to evaluate building shell upgrades to reduce noise within the classrooms and the noise exposure of students, flight instructors, and staff. Accoustical treatments were recommended by the noise technical study recommended to improve noise insulation thus reducing maximum noise levels generated by aircraft run-ups and fly-overs. 

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ENVIRONMENTAL ASSESSMENT FOR THE RELOCATION OF C-12 AND C-21 AIRCRAFT AND FLYING TRAINING PROGRAMS, KEESLER AFB, MISSISSIPPI, AND MAXWELL AFB, ALABAMA:

Facility: (1) Keesler Air Force Base (2) Maxwell Air Force Base (3) Lawson Air Field Army installation (4) Gulfport-Biloxi Airport (5) Dannelly Field Airport (6) Mobile Airport - used by civilian aircraft and the Coast Guard.

Request: Environmental Assessment

Role: Conducted a noise impact analysis which included preparing noise contours and determining noise levels at specific sensitive receptor locations for six different airports (see facilities list). Facilities 4 and 5 are civilian airports with extensive joint operations with Air National Guard aircraft, and facility 6 is used by civilian aircraft and the Coast Guard. On site collection at all six facilities were performed to quantify fixed and rotary-wing aircraft operations. Also collected were information about flight profiles, engine thrust settings, flight tracks, speeds, and other relevant data. The engine run-up pads were identified and information about duration and type of run-ups was gathered. The Air Force noise prediction computer model, NOISEMAP, in conjunction with the FAA’s INM noise model were used to generate baseline and the project noise contours. Noise impacts were evaluated using additional acreage impacted by the C-12 and C-21 aircraft and flyover noise levels calculated at each specific receptor location. In-depth analyses were performed to determine the ability of either Keesler AFB or Maxwell AFB and the four airfields, as well as the airspace surrounding them, to support the aircraft operations associated with the proposed, alternative, and other actions.

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ARCHITECTURAL & BUILDING ACOUSTICS

Revolution Lounge:

The Beatles’ Revolution Lounge is located in the Mirage Resort in Las Vegas and was designed to celebrate the Beatles’ summer of love show.  Acoustical design was analyzed and recommendations were provided by AGI to improve interior acoustics. NC analyses were conducted to evaluate the overall impact on high roller spaces and living quarters. Noise control recommendations were developed to satisfy both client and guest expectations at the world famous resort.

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Bondi Restaurant and Bar

Noise control testing, analyses and control recommendations were performed for the Bondi Restaurant and Bar in San Diego.  The facility is part of a mixed use project that is situated in the famous gas lamp district of San Diego.  Condominium homeowners located above the restaurant had experienced nightclub noise from the Bar’s late night operations.  Diagnostics and field testing resulted in noise control measures that satisfy all the requisite codes and lease requirements for the restaurant.

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WYNN RESORT & CASINO:

The new Wynn Resort & Casino, Las Vegas’ newest 5-star resort is located in the heart of the Las Vegas Strip. It. is being constructed at a cost of over 2 billion dollars. Specialized interior acoustics analyses, diagnostic testing, and recommendations were provided by AGI to improve interior acoustics. NC analyses were conducted to evaluate plasma screen installations and their overall impact on living spaces. Sound intensity testing was conducted to evaluate sound leakages in existing wall assemblies. In order to improve the sound insulation between units a set of noise control recommendations were developed. Ultimately, the interior acoustics was upgraded to a level beyond what is currently experienced at a 5-star resort.

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CITY OF LONG BEACH EMERGENCY COMMUNICATIONS AND OPERATIONS CENTER (ECOC) FACILITY:

With its population approaching a half-million people near the turn of the century, the City of Long Beach (Calif) sought to upgrade their 9-1-1 call-in, Fire, Police, and Emergency Preparedness capabilities to a new, state-of-the-art facility. A member of the overall architectural, mechanical, and systems design team for this project, AGI's staff previously supported the main architectural firm in all of the acoustics and noise control aspects. AGI reviewed the mechanical installations (including the HVAC design) for noise and vibration control, evaluated the building shell design for exterior-to-interior noise control (aircraft operations from nearby Long Beach Airport were of concern), and assessed mechanical equipment isolation conditions. AGI staff also analyzed absorptivity characteristics of interior space, space-to-space separation, flanking preventions, speech intelligibility, and audio/video design support for this 50,000 square foot complex.

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A sampling of other pertinent projects previously undertaken by AGI staff includes:

FSTC, FIIC, NNIC, NIC & NR Testing, Acoustical Design, and Retrofitting
• Bondi Bar & Lounge – San Diego, CA

• M2i – San Diego, CA

• The Mark – San Diego, CA

• Villages at Squaw Valley – Squaw Valley, CA

• Seahous – La Jolla, CA

• Marnell Corrao Associates, Le Reve Resort Project – Las Vegas, NV
• KDT Construction, Sahara Vista Condominium Project – Las Vegas, NV
• Sheraton Hotels, NIC Testing of Movable Wall Partitions – Industry, CA
• Pardee Homes, Mira Mesa and Vista Condominiums
• Kaufmann & Broad, Multi-family Properties
• Corbin Yamafugi Partners
• Headland Properties, Palisades Highlands
• Regis Construction, Agoura Hills Multi-family Projects
• Gascon Mar Ltd., The Plaza Residential Project
• Ted Berry Construction, Brookshire Manor
• The Baldwin Company

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Construction Defect Litigation Support 

• Amber Ridge – Las Vegas, NV

• La Breeza – Phoenix, AZ

• Villagio – Las Vegas, NV

• Remington – Los Angeles (Westwood) – CA

• Lorber, Volk et. al. – San Diego, CA
• Building Analysts – San Diego, CA
• Aguirre, Eckman et. al. – San Diego, CA
• Davis, Digrazia et. al. – Irvine, CA
• Procopio, Cory, Hargreaves & Savitch – San Diego, CA
• Law offices of Thomas Miller – San Diego, CA
• Reid & Hellyer – Riverside, CA
• Cooksey, Howard, Martin & Toolen – Tustin, CA

Construction Defect Investigations 

San Diego County, California
• Casa Blanca Condominiums
• Courtyards Condominiums
• International Gardens Condominiums
• Laguna Sur Condominiums
• La Jolla Colony Condominiums
• Presidio Place Condominiums
• Sea Cliff Condominiums
• Villas at New Salem

Marin County, California
• Point Tiburon Condominiums

Los Angeles County, California
• Palisades Highlands Condominiums
• Wilshire Manning Condominiums

Orange County, California
• Bayridge Townhomes
• Cabo Del Mar Condominiums
• Quail Creek Condominiums
• Racquet Club Condominiums
• Sea Island Condominiums

 

 

 

ENVIRONMENTAL

BLOCK AT ORANGE EXPANSION PROJECT:

This project involved supplementing the existing retail shops, restaurants, movie theaters, and skate park at the Block’s existing 86 acre site. The addition of approximately 120,000 square feet of combined new retail, residential, hotel, and restaurant uses also included additional parking facilities be constructed to support the increased demand created from vehicles coming to the Block. Subject to an extremely tight time constraint, AGI’s staff prepared a noise assessment to determine the effect on the noise environment attributable to the proposed project. An ambient noise monitoring program determined the ambient noise levels in the vicinity of the project site. Nearby sensitive receptors were used to model and assess noise from construction activities, operational noise, and project traffic. AGI’s staff recommendation included project design features and noise reduction measures to reduce the noise impacts to a level of insignificance. AGI worked with planning professionals and environmental attorneys to complete the resultant EIR noise section within 10 business days, including screencheck responses to comments from City Planners.

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INDUSTRY BUSINESS CENTER SPECIFIC PLAN EIR:

AGI staff previously prepared the EIR noise section to address the noise impact of the Industry Business Center Program. The project consisted of auto services, business parks, commercial, corporate offices, general offices, industrial parks and regional retail on 331 acres of development. Vehicular traffic, construction noise, and daily operations were the principal noise sources associated with the Program. Baseline noise monitoring was conducted to determine the ambient noise levels in the vicinity of the project site. Noise impacts to sensitive receptors were evaluated for construction activities as well as mechanical noise. The Federal Highway Administration’s (FHWA) methodologies and FTA’s methodologies were employed to model noise levels from mobile sources including project traffic and train movements. Recommendations were provided to minimize noise impacts for the program.

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STAPLES CENTER/LOS ANGELES SPORTS AND ENTERTAINMENT COMPLEX PROJECT, PHASES I AND II:

AGI staff previously prepared noise studies for environmental impact reports for the Staples Center, Phases I and II. The Staples Center arena serves as the home of the Los Angeles Lakers and Los Angeles Clippers basketball teams, and the Los Angeles Kings hockey team. The projects incorporated a multi-use development anchored by a 22,000 seat maximum capacity sports/entertainment arena including approximately 200,000 square feet of ancillary retail, restaurant, office, recreational uses, and related facilities (including parking). Noise monitoring and modeling was performed to assess potential noise impacts resulting from the project to the surrounding residential and school receptors. Noise resulting from construction activities was also projected to assess potential noise impacts to sensitive receptors. The Federal Highway Administration’s (FHWA) methodologies were used to model noise levels from mobile sources such as project traffic.

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WARNER CENTER NOISE TECHNICAL STUDY:

AGI staff previously provided litigation support for the City of Los Angeles’  request for Supplemental Air Quality and Noise Impact Analyses for the Warner Center Specific Plan EIR based on the direction of the Superior Court of California. Staff participated in the scope of work proposed to “interpret the determination of the court” and translate the court’s directive into a quantitative analysis. The court ruled that the (original) EIR was inadequate because it failed to consider the cumulative impact of existing and projected traffic noise at two schools. The court rejected the argument that the serious nature of existing traffic noise problems already around the schools diminished the level of significance of traffic noise to be associated with the project. In so doing, the court directed the City to prepare “a meaningful and accurate report of the impact of traffic noise on the schools as it did for the residences in the area” including the extent of mitigation. Staff previously prepared the Noise Technical Study and SEIR to include revised vehicular noise modeling, the monitoring of interior and exterior noise at specific schools in the area, and the use of sophisticated mathematical noise models for predicting stationary source noise contributions to schools towards both interior and exterior noise.

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WDI GC3:

WDI is in the midst of constructing the new Grand Central Creative Campus (GC3) studios in the Glendale Redevelopment District. Comprised of new film studios, offices, sets, support operations, and key infrastructure GC3 would be a center for WDI operations. AGI staff previously prepared a noise assessment study to ascertain the effect of the proposed project on the noise environment. An ambient noise monitoring program was undertaken to establish the ambient noise levels in the vicinity of the project site. Noise resulting from construction activities was assessed for potential noise impacts to sensitive receptors. Noise levels originating from mobile sources such as project traffic, train movements, and helicopter operations were modeled. The Federal Highway Administration’s (FHWA) methodologies, FTA’s methodologies, CalTrans’ SOUND32 traffic noise model, and the FAA’s HNM model were utilized. Recommendations were provided to minimize noise and vibration impacts. A detailed noise study was prepared and used to generate the EIR noise section for the project.

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WDI THIRD GATE:

WDI proposed the construction of a new theme park and resort destination complex in Anaheim. Two phases of the assessment project were determined: an interim use phase and an ultimate use phase. Key components of the project included numerous potential configurations of attractions, entertainment venues, hotels, outdoor facilities, parking, and mechanical support equipment. AGI staff previously prepared a constraints analysis study and environmental noise and vibration study to address the potential impact with such a large-scale project under a variety of build-out scenarios. Mitigation measures were recommended to reduce and minimize impacts where identified.

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CITY OF LAGUNA NIGUEL COMMUNITY DEVELOPMENT DEPARTMENT, ON-CALL ACOUSTICAL CONSULTING SUPPORT:

AGI staff previously prepared technical noise studies and noise sections for the preparation of CEQA documents for key projects within the City. Special noise studies have been prepared for the Bear Brand Park Recreation Uses, Crown Valley School Lighting Project, La Paz Park Development, Moulton Elementary School Lighting Project, Niguel Hills Lighting Project, and Rancho Niguel Lighting Project. For each project AGI staff previously performed noise monitoring to establish baseline conditions, field observations to identify noise source characteristics, computer modeling to predict future noise levels, criteria assessment to quantify potential impacts, and noise mitigation development (such as sound walls, enclosures, and administrative measures) to reduce noise impacts. Technical studies were prepared for each project, summarizing the results of the consulting work. Support was provided to City planning staff in public hearings.

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HOME DEPOT:

Traffic noise, facility operations, nighttime deliveries, mechanical equipment, and parking lot operations were of concern at the Home Depot facilities in the Cities of San Pedro and Huntington Park. Noise studies were prepared, ambient noise surveys conducted and analyses performed to evaluate their impact. Reports summarizing the results of the measurements and analyses were prepared for each case. Recommendations were provided to minimize the impact on the nearby community. Because of its close proximity to Huntington Park High School, a special analysis was conducted at the Huntington Park facility, to address the impact of noise.

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GREGORY CANYON LANDFILL:

AGI staff previously prepared the revised draft Environmental Impact Report Noise Study for San Diego County’s Gregory Canyon Landfill. The revised draft study detailed extensive noise monitoring, and computer modeling to evaluate future traffic, construction, and operations noise impacts on sensitive species and the nearby residences. Recommendations were made to implement noise control measures. The goal, to minimize impacts on sensitive species such as the Gnatcatcher and the Least Bell’s vireo, as well as the nearby residences. Recommendations were also made in the study to reduce and mitigate noise impacts during the life of the construction process. Further, a construction monitoring program was recommended to track construction activity noise and provide an avenue for receiving community noise complaints and their resolution.

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LOPEZ CANYON LANDFILL:

AGI staff previously prepared a detailed noise study of Los Angeles County’s Lopez Canyon Landfill. Noise measurements were conducted to quantify existing noise levels from truck operations and landfill operations. Analysis was performed to evaluate existing and future operating conditions. To minimize noise impacts on the community the results of the analysis were assessed against the County Noise Standards and noise control measures were recommended. A long term follow-up noise monitoring program was established to measure noise levels within the community, monitor existing operations, and provide recommendations for diminishing daily operations noise within the community. The successful reduction of landfill operations noise impacts onto surrounding residential neighborhoods is directly attributed to the program.

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INDUSTRIAL NOISE:

Some of the Projects and Clients that AGI staff have conducted noise studies include:


      Kimberly Clark Anaheim Paper Plant

      Oxy Oil Drilling Noise Monitoring and Control Investigation

      Boeing Test Cell Noise Evaluation and Control

      Syska Hennessy Noise Assessment and Retrofit

      Kaiser Hospital Emergency Generator Noise Study

      SBVMWD Pump Noise Assessment and Building Retrofit

      Graymont Rail Car Noise Control

      Angus Petroleum Urban Oil Drill Rig Noise Control Retrofit
      LA Hyperion Waste Treatment Plant
      OCSD Treatment Plant
      PoLA Steel Recycling Plant
      IRWD Booster Pump Station

      Frito Lay
     
Reliant Power

      Duke Energy       

      FPL
      CalPeak                            

      AES

      MEGA
      Energy NorthWest

      Panda Energy

      OxyChem
      TIE

      PSE&G

kimberlyclarkthumsboeinghyperion

 

 

 

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RAIL NOISE

ICTF EXPANSION NOISE STUDY:

AGI staff previously conducted a noise study for the ICTF Expansion Project to evaluate the noise impact from future project components.  The study focused on establishing baseline noise conditions and evaluating the future noise from increased yard tractors, container movement, on-site trucks, construction, and rail activity.  As a result of the study, a noise barrier was recommended to minimize the impact of noise increases on the adjacent residential neighborhood located directly east of the project site.

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SAN MARCOS NCTD LIGHT RAIL NOISE STUDY:

AGI staff previously conducted a noise study for the City of San Marcos Public Works Department to address the noise impact of the NCTD Light Rail Project on noise sensitive residential receptors within the City. The study evaluated the findings of the NCTD EIR and compared the results with modeled analyses specific to the City’s Residential Receptors. Noise impacts from an alternative grade crossing were also evaluated as part of this study. Soundwalls and administrative noise control measures were recommended in a report to reduce the impact at the residences located nearest the study segment.

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UPRR/METROLINK BY-PASS:

AGI staff previously conducted a rail noise impact analyses for the UPRR By-Pass Project in Pomona. The study evaluated the noise impact associated with a proposed Metrolink by-pass to alleviate traffic on the main UPRR line. The future CNEL from rail operations based on two alternative track configurations were analyzed and assessed with respect to the FTA noise guidelines for sensitive receptors. The analyses and noise control alternatives recommended to reduce rail noise impacts at nearby sensitive residential receptors were summarized in a final report to HDR

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LA BREA SHAFT METROLINK ACCESS SITE:

A noise and vibration monitoring and reporting plan was previously prepared by AGI staff for the reconstruction of the La Brea Metrolink Access Site.  Metrorail construction created high noise and vibration levels that were intrusive upon the sensitive residential and church uses that bordered the access site. The vibration and noise monitoring program specified daily measurements at the nearest residential receptors to the project site. Whenever exceedances were observed, the resident engineer was notified, and mitigation measures were applied to reduce the noise and vibration. If the exceedances were not reduced, then the project halted until more effective measures could be enacted to minimize the noise and vibration. A weekly report was prepared to summarize the results of the monitoring and mitigation actions taken. Each report was submitted to the MTA for review and ultimate approval. The development and execution of the monitoring and reporting program allowed construction to be completed on time and the interference onto the community to be minimized.

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NORTH HOLLYWOOD METROLINK STATION:

AGI staff previously prepared noise and vibration monitoring plans and studies for the construction of the North Hollywood Metrolink Station. Metrorail construction created high vibration and noise levels that were intrusive upon the sensitive residential uses that bordered the project site. A vibration and noise monitoring program was created to measure and report vibration and noise levels at the nearest residential receptors to the project site. Weekly monitoring was performed to evaluate the measured vibration and noise. When needed, mitigation measures were recommended to reduce the amount of noise and vibration. A weekly report was prepared and submitted to the MTA for review. The development and execution of the monitoring and reporting program allowed construction to be completed on time and the interference onto the community to be minimized.

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TRAFFIC NOISE

ROUTE 215 BRUCE WOODBURY BELTWAY, LAS VEGAS:

AGI staff previously prepared traffic noise analysis for the 215 Beltway widening project in Clark County, Las Vegas, Nevada.  The tasks conducted for this project included community interface, noise monitoring, traffic noise modeling, and report preparation.  Because the project is a high profile, controversial assignment, AGI staff previously assisted the design team in community workshops for project and soundwall presentation.

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DENNIS ROAD EXTENSION, FAIRBANKS ALASKA:

AGI staff previously conducted a traffic noise study for the Alaska Department of Transportation to evaluate traffic noise impacts from the Dennis Road Extension Project.  The study focused on establishing baseline noise conditions in a rural environment and predicting traffic noise levels for future forecast traffic conditions using the latest version of the FHWA’s TNM model.  A comprehensive noise study was prepared that summarized the results for inclusion into the Environmental Assessment Report.

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TCA SR-241 NOISE STUDY, COUNTY OF ORANGE:

AGI staff previously completed a traffic noise study for the Transportation Corridor Agency SR-241 Roadway Widening Project in Orange County. The purpose of the study was to evaluate the noise impact associated with roadway widening. Residential receptors located on both sides of SR-241, between Bake Parkway and Melinda Road Bridge were the primary focus of the noise study. AGI staff previously met with TCA sub-consultants to identify key locations as part of the kick-off meeting. The noise study included noise monitoring, and traffic noise analyses using Caltrans’ Sound2000 prediction model. Impacts were assessed based on Caltrans NAC and the results for study were summarized in a noise study report.

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MOUNTAIN VIEW AVENUE ROADWAY WIDENING TRAFFIC NOISE STUDY, LOMA LINDA:

AGI staff previously conducted a traffic noise study for the City of Loma Linda’s widening of Mountain View Avenue. The study limits were from Prospect Avenue north to Van Leuwen Street. AGI staff previously met with Caltrans and the City of Loma Linda Public Works Department to kick-off the project and to identify key receptor locations. The noise study included ambient monitoring of existing traffic noise and rail noise, and future traffic noise modeling using Caltrans’ Sound2000 traffic noise model. The results of the analyses and impact assessment were summarized into a noise study report.

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WASHINGTON STREET SOUND ATTENUATION STUDY, CITY OF LA QUINTA:

AGI staff previously conducted a soundwall study for the City of La Quinta to evaluate existing and future traffic noise along Washington Street. The study limits were from Avenue 48 to Avenue 50. The noise study included traffic noise monitoring, exterior-to-interior noise monitoring, and verification of compliance for an existing soundwall. Noise abatement measures were evaluated as well as the associated costs. The results for were summarized in a noise study report presented to city staff and Council.

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EAST CHAPMAN AVENUE NOISE STUDY, CITY OF ORANGE:

AGI staff previously conducted a noise study for the City of Orange Public Works Department to address existing and future traffic noise and vibration on East Chapman Avenue. The study area was divided into three segments with each segment being treated as an individual sub-project. AGI staff previously met with homeowners to discuss project goals, plans and schedule. The noise study included noise monitoring, exterior-to-interior noise monitoring, and vibration monitoring. Noise abatement measures were evaluated, costs were estimated, and the results were summarized into a comprehensive study for City Council.

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SAN JOAQUIN HILLS TRANSPORTATION CORRIDOR, ORANGE COUNTY:

The San Joaquin Hills Transportation Corridor (SJHTC) is the extension of the State Route 73 Freeway from the I-5 freeway in the City of San Juan Capistrano to Jamboree Road in the City of Newport Beach. The project provides three general purpose lanes in each direction, two reversible HOV lanes, a toll system, and the reservation of an 88-foot median for additional capacity as warranted. The corridor is one of the first toll roads in the State of California and passes through the cities of Irvine, Laguna Hills, and unincorporated areas of Orange County. The purpose of the noise study was to assess the future noise impacts for the proposed project and recommend mitigation measures to comply with FHWA and CalTrans noise abatement criteria. Detailed barrier designs and analyses for various sensitive receptors along the corridor based on the specific topography and condition of each receptor was performed. Specifications were developed for the soundwall engineers and design drawings were reviewed for accuracy. Indoor/outdoor noise measurements were conducted for selected houses and building acoustical treatment measures were recommended to mitigate noise impacts. Public hearings, community meetings, and open houses were held to encourage public participation and opinions.

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ROUTE 55 SOUNDWALLS, ORANGE:

The 55 Freeway is a major freeway serving Orange County with residential properties bordering the freeway right-of-way. A noise study was performed to determine the need for soundwalls along the roadway to reduce or abate traffic noise levels at sensitive locations. Extensive noise monitoring was conducted at residential receptors bordering the freeway. The topography included at grade, above grade, and recessed properties. Analysis was performed to determine the soundwall heights needed to abate traffic noise levels per CalTrans requirements. These soundwalls were ultimately constructed of concrete block with heights ranging up to 16-feet.

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91 FREEWAY SOUNDWALL STUDY, ANAHEIM:

A soundwall study was conducted for the 91 Freeway to address traffic noise impacts at sensitive receptors along the corridor. Noise surveys were performed to quantify existing traffic noise levels at key residential locations. The majority of residences were at grade with the roadway. However, a few receptors were above the freeway roadway elevation. The analysis was performed with CalTrans’ Sound32 traffic noise model. Traffic noise impacts were predicted and noise abatement in the form of freeway soundwalls was recommended.

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BASTANCHURY ROAD, FULLERTON:

Bastanchury Road is a major arterial serving the City of Fullerton. The roadway is bordered by residential and horse properties on the north and south sides. As part of the environmental documentation, a noise study was performed to quantify existing and future noise levels from the proposed widening of the roadway. Residences located on either side of the road would experience increased noise levels from the widening of the roadway. Noise measurements were conducted in the residential neighborhood to quantify existing sound levels from traffic and background sources. The FHWA noise model was used to predict future noise levels from the widened roadway. Impacts were identified with respect to the local noise standards. Alternative noise control measures were recommended to reduce the traffic noise to acceptable levels.

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ROUTE 74 PROJECT, RIVERSIDE COUNTY:

This project proposed the widening of State Route 74 between the Interstate 15 interchange in the City of Lake Elsinore and 7th Street in the City of Perris. The entire length of the project was about 8.5 miles. The purpose of the noise study was to assess the environmental impact of highway traffic noise generated by the proposed project on sensitive receptors and recommend mitigation measures to reduce the noise impact based on noise barrier design requirements of the Federal Highway Administration (FHWA) and CalTrans noise abatement criteria. Future noise levels were predicted for the alternative which produces the highest noise levels using the forecasted Level-of-Service ‘C’ traffic for the future design year. Workshops were held with the public to address the impact of the project and noise control alternatives.

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I-15 RECONSTRUCTION, SALT LAKE CITY, UTAH:

Over 10 noise studies were prepared to address traffic noise impacts associated with the I-15 reconstruction in Salt Lake City, Utah. Noise studies were prepared to evaluate over 10 segments of the proposed new roadway. For each noise study, noise measurements were conducted and an analysis was performed on the proposed new alignment. Soundwalls were recommended at over 20 locations to mitigate the noise increases associated with the project. The soundwalls were analyzed using a version of the FHWA model STAMINA and the Utah Department of Transportation (UDOT) noise criteria. All recommended soundwalls achieved at least 5 dB of noise reduction and provided noise abatement for numerous communities, schools and churches located along the project’s new alignment. Public hearings, community meetings, and open houses were initiated and held to encourage public participation and opinions.

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MOUNT HIGHLAND DRIVE SOUNDWALL STUDIES, BUTTE, MONTANA:

Two noise technical studies were prepared to evaluate the existing and future noise impact associated with the Mount Highland Drive project in Butte, Montana. Ambient noise measurements were conducted to establish baseline conditions. Future noise impacts were predicted with the STAMINA traffic noise model. The noise impacts at residential receptor locations were assessed and noise abatement in the form of sound walls was evaluated to reduce future traffic noise impacts.

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OUTER LOOP HIGHWAY SECTION 13 NOISE STUDY, PHOENIX, ARIZONA:

The Outer Loop Highway (OLH) is a 52-mile multi-lane highway which will form a complete loop around the Phoenix metropolitan area. Section 13 of the OLH is centered around the intersection with the Superstition Freeway/SR360. The project involved assessing the impact of traffic noise generated by alternative configurations of the OLH interchange and recommending the location and height of sound walls to meet FHWA requirements. The alternative interchange configurations included tunneled ramps and multiple loop ramp alignments. A version of the Federal highway noise prediction model STAMINA was used for all noise computations. A detailed analysis was conducted for specific receptors to evaluate the benefit from double barriers.

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ROUTE 85 SOUNDWALL STUDY, SANTA CLARA COUNTY:

A noise study was initiated by the Santa Clara Traffic Authority for the Route 85 transportation corridor. This corridor is about 18-miles long and extends from the U.S. Route 101 Freeway in south San Jose to Interstate Route 280 in Cupertino. The project involved assessing the impact of traffic noise generated by Route 85 and recommending preferred location and height of sound walls to meet CalTrans and FHWA requirements. The CalTrans preferred highway noise prediction computer model Sound32 was used for all noise computations. In addition, a detailed analysis was conducted for selected neighborhoods to evaluate reflected noise from soundwalls and underpasses. Public hearings, community meetings, and open houses were initiated and held to encourage public participation and opinions.

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VIBRATION PROJECTS

MITSUBISHI ELECTRIC POWER PRODUCTS SOUTHERN CALIFORNIA EDISION SERRANO SUB-STATION, CITY OF ORANGE:

AGI staff previously conducted FFT vibration measurements of high voltage transformers in the Serrano Sub-station. The survey was conducted because SCE engineers suspected that a transformer was generating excessive vibration. Two transformers for surveyed for vertical and horizontal vibration during a controlled voltage test. The vibration velocity was measured for each transformer simultaneously and individually to rule out interference from the adjacent equipment.

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WDI REGARDING ODETICS ELECTRONICS FACILITY, ANAHEIM:

AGI staff previously conducted a long-term vibration monitoring effort at the WDI facility located adjacent to the Odetics Electronics Facility in Anaheim, California. Heavy truck and bus movements along the access road were a source of interference with the daily operations of vibration sensitive equipment within the clean room and machining facility. The long term monitoring was supplemented by field technicians who documented the time and event traffic to correlate events with measurement data. Data analysis indicated that heavy buses and delivery trucks would cause high vibration levels to be experienced at the electronics facility. A vibration monitoring plan and construction mitigation plan was developed to minimize the impact on the Odetics facility and to allow for construction at the WDI facility.

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LOS ANGELES MTA RED LINE CO352 NOISE AND VIBRATION STUDIES, LOS ANGELES:

AGI staff previously conducted vibration and noise measurements at the project site for Mallcraft Inc. The monitoring was part of Noise Control and Monitoring Plan for the CO352 Project Site. Impact analysis and assessment was conducted with respect to the MTA’s noise and vibration standards. Mitigation measures were recommended in a weekly report to reduce all impacts.

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LOS ANGELES MTA RED LINE CO390 NOISE AND VIBRATION STUDIES, LOS ANGELES:

AGI staff previously provided noise and vibration consultant services for the CO390 Project Site. A Noise Control and Monitoring Plan was prepared for Steiny and Company to implement noise and vibration impact analysis and assessment procedures with respect to the MTA’s noise and vibration standards.

I-15 RECONSTRUCTION, SALT LAKE CITY, UTAH:

An on-call vibration monitoring and control program was created for the I-15 reconstruction in Salt Lake City, Utah. Vibration studies were prepared to evaluate construction over 10 segments of the proposed new roadway. For each study, extensive vibration monitoring was conducted and analysis was performed on the proposed construction and pile driving operations. Measured data were compared to FTA criteria to determine impacts and evaluate damage potential. Mitigation measures were recommended to minimize vibration impacts.

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LOS FELIZ SCHOOL NOISE AND VIBRATION CONTINUOUS MONITORING STUDY, LOS ANGELES:

Design, installation and maintenance of long term (3+ years), continuous noise and vibration monitoring systems both inside and outside an elementary school across from the Metro Red Line B 251 construction yard. A remote noise and vibration monitoring system was setup to monitor construction noise and vibration activities. Weekly and monthly reports were provided to identify noise and vibration impacts from Metro Rail construction activities.

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VIBRATION IMPACT ASSESSMENT OF HARBOR FREEWAY TRANSITWAY NORTHERN TERMINUS, LOS ANGELES:

The focus of the study was to document the maximum earthborne vibrations for Orthopaedic Hospital and for Saint John's Episcopal Church that is caused by truck pass-bys along I-110. The results of this study were used to develop the construction vibration monitoring criteria for the construction of the I-110 transitway. At Orthopaedic Hospital, a number of electron microscopes are installed and used for various laboratory and research studies. According to the information provided by Orthopaedic Hospital, the floor on which the microscope is standing should be as free from vibrations as possible. Saint John's Church is an historic building and high levels of vibration could possibly cause building damage. Vibration measurements for the Orthopaedic Hospital were conducted at the shoulder of I-110, at a distance of approximately 3 m (10 feet) from the edge of the traveled way, near the main building in a garden bed, on the floor of the room that housed an electron microscope on the specimen chamber of the electron microscope, and inside a surgery room. Vibration monitoring for the Saint John's Church was conducted at the shoulder of I-110, at the corner of the church main building, and on the raised church floor in front of the altar.

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CHILDREN'S HOSPITAL BASELINE AND CONSTRUCTION VIBRATION STUDY, LOS ANGELES:

Vibration measurements were conducted in the neonatal care facility at the hospital to help establish a baseline criterion for this sensitive infant treatment area. In order to determine how close various pieces of heavy construction equipment related to the Metro Rail Construction could operate next to the hospital, ground vibration transfer measurements were conducted while simultaneously measuring both inside and outside the hospital. The data was used to re establish construction equipment limits.

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COPYRIGHT © ACOUSTICS GROUP INC. 2008, ALL RIGHTS RESERVED