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WA Wieland Associates, Inc. PROPOSAL On -Call Acoustical Consulting Services Introduction Wieland Associates, Inc., founded in February 1998, has quickly established a reputation for the competent, cost-effective resolution of noise issues by providing high quality consulting services. At Wieland Associates, we conduct noise and vibration testing, monitoring and assessments for a wide variety of clients, including engineering firms, planners, and local and State government agencies. We work closely with our clients to achieve a narrowly tailored, cost-effective solution to meet their needs. At the same time, we provide exceptional flexibility and responsiveness to get the job done. We have the experience and expertise to resolve complex assignments in a timely manner while still achieving the degree of specificity our clients demand. Our staff of five (including three acoustical consultants) is adequate to support your needs, and the firm's strength, stability and financial condition as a business concern are excellent. We will not use subcontractors to perform your work. The instrumentation required to perform an acoustical study is owned and operated by Wieland Associates. Such instrumentation includes the following precision, calibrated equipment: • Sound level meters, for measuring weighted and unweighted sound levels, • Accelerometers for measuring ground vibration levels, • Real-time analyzers, for measuring 1/3-octave band noise and vibration spectra, and • Graphic level recorders, to provide a physical display of the measured sound and vibration levels. Certificates of instrument calibration are available as required to support the work effort. Wieland Associates has also fully implemented the following models on its computers: • The Federal Highway Administration's (FHWA's) highway traffic noise prediction model (FHWA-RD-77-108) • The State of California Department of Transportation's (Caltrans') Sound32 traffic noise model • Wyle Laboratories' railroad and rail yard noise prediction model (WCR 73-5) • The Federal Transit Administration's (FTA's) General Transit Noise Model developed by HMMH, Inc. • The Wheel/Rail Noise Control Model developed by the American Public Transit Association (APTA) • The Helicopter Noise Model developed by the Federal Aviation Administration In addition, we have developed 3-D acoustical models for projects that involve multiple sources and receivers. This model has been successfully used on several large-scale projects, including the proposed Groundwater Replenishment Facility in Fountain Valley, CA. CITY OF SANTA ANA 7 Proposal Fite P1544-07 May 22, 2007