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Draft Supplemental Environmental Impact Report Page IV.0-4 Forward Inc. Landfill 2018 Expansion Project Police PHS-9.5. The County shall seek to alleviate existing community noise problems. Noise Measurements In order to characterize the current ambient noise conditions near the project site,the noise measurements in the project area were updated by RCH Group (RCH)in June of 2018. Unattended noise measurements were conducted for 72 hours at four locations along Austin Road in the project area. In addition, two short-term consecutive 5-minute measurements were conducted at the same four locations and at two other locations; one along Austin Road and the other along Newcastle Road, northwest of the project site. The measurement locations were similar to those in the 2013 EIR, with the exception of Site 3,which was relocated south of the curve on Austin Road. Figure IV.0-1 illustrates the noise measurement site locations. The noise measurement locations are described in Table IV.0-3. All noise measurement results are presented in Table IV.0-3, and Appendix F presents detailed data associated with the long-term noise measurements. Noise measurements were along the roadsides and not at the outdoor activity areas. However, the data collected at these sites were used as confirmation of noise model estimates of noise levels at outdoor activity areas. Ambient noise levels were higher at some measurement site locations than those presented in the 2013 EIR. At Site 1,the operation of a new power plant across the road has increased background noise levels. At Site 5,increased noise may be attributed to traffic increases from the Intermodal station and, to a lesser extent, the California Health Care Facility, which began operating since 2013. Sensitive Receptors Places where people live, sleep, recreate,worship, and study are generally considered to be sensitive to noise because intrusive noise can be disruptive to these activities. In the 2013 EIR, the only sensitive receptors identified near the proposed project expansion sites were rural residences. In 2013, operations began at California Health Care Facility on the site of the former Karl Holton Youth correctional facility on Austin Road. The nearest existing sensitive receptors to the proposed expansion areas and the haul routes are: • At least ten residences are along Arch Road, west of Austin Road,the closest of which is approximately 55 feet from the road centerline; • At least three residences are along Austin Road,between Arch Road and the project driveway, the closest of which is approximately 70 feet from the road centerline; • Two residences are along Austin Road, south of the project driveway,the closest of which is approximately 110 feet east of the road centerline; • At least eight residences are along French Camp Road, west of Austin Road,the closest of which is approximately 50 feet from the road centerline; • At least ten residences are along French Camp Road, east of Austin Road, the closest of which is approximately 80 feet from the road centerline; and • California Health Care Facility, west of Austin Road. The facility is approximately 280 feet from the road centerline and 2,500 feet northwest of the northeast expansion area.