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Chapter 5. Study Methods and <br />Procedures <br />5.1. Methods for Identifying Land Uses and Selecting Noise <br />Measurement and Modeling Receptor Locations <br />A field investigation was conducted to identify land uses that could be subject to <br />traffic and construction noise impacts from the proposed Project. Land uses in the <br />project area were categorized by land use type, activity category (as defined in <br />Table 4.1), and frequency of human use. An area of frequent human use is an area <br />where people are exposed to traffic noise for an extended period of time on a regular <br />basis. One practical test for determining frequent human use is the presence of <br />existing facilities that invite human use such as benches, barbeque facilities, covered <br />group picnic areas, and uncovered picnic tables. As stated in the Protocol, noise <br />abatement is only considered for areas of frequent human use that would benefit from <br />a lowered noise level. Accordingly, this noise impact analysis focuses on locations <br />with defined outdoor activity areas (e.g., residential backyards, parks, and sitting <br />areas). <br />The topographical features of the project area relative to nearby existing and planned <br />land uses, such as hills and changes in terrain, were also identified. <br />Fifteen short-term measurement locations were selected to represent noise -sensitive <br />land uses in the project area. Two long-term measurement sites were selected to <br />capture the diurnal traffic noise level pattern in the project area. Short-term <br />measurement locations were selected to serve as representative modeling locations. <br />Also, other nonmeasurement locations were selected as modeling locations. A total of <br />92 receptor locations were modeled to represent land uses in the project area. These <br />monitoring and modeled receptor locations are shown on Figure 5-1. <br />5.2. Field Measurement Procedures <br />A field noise study was conducted in accordance with the recommended procedures <br />in the Caltrans TeNS (2013). The following is a summary of the procedures used to <br />collect short-term and long-term sound level data. <br />Fairview Street Improvements from 9th Street to 16th Street 21 <br />and Bridge Replacement Project Noise Study Report <br />