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3-14 Forward Composting Facility SWT Engineering Report of Composting Site Information - January 2022 ⧫ Placing a layer of cured compost over raw compost materials to act as an odor trap and serve as insulation; and, ⧫ Using an organic odor neutralizer. The EHD will be contacted should the site receive any odor complaints. 3.6.3 Noise Control Noise at the site includes traffic noise generated by trucks and other vehicles travelling along Austin Road to the landfill and RRF /Compost F acility and noise generated by the equipment used in RRF /Compost F acilit y operations. Noise levels of onsite equipment are controlled by proper maintenance of mufflers to factory specifications. The EHD will be contacted should the site receive any noise complaints. Additionally, there shall be no ancillary or facility operations (i.e., heavy equipment operations within 1,500 feet of any occupied residence) outside of the permitted hours of operation. Noise levels are not likely to create health hazards to persons using the site due to the use of mufflers on heavy equipment. Protective ear wear is provided to all employees. Due to the remote location of the site, noise levels are not likely to create health hazards to nearby residents. The EHD will be contacted should the site receive any complaints. In general, the major sources of noise at the Compost Facility/RRF will be the grinder and the Windrow turner, if used. These machines typically produce sound levels in the range of approximately 85 to 90 decibels. Since the estimated sound level at 200 feet is approximately that of the human voice during normal conversation, noise should not be a health hazard to persons working approximately 200 feet from the equipment. A noise level study conducted for a tub grinder manuf acturer shows the following sound pressure levels: within 50 feet, 85.2 decibels; within 100 feet, 78.4 decibels; and within 200 feet, 73.5 decibels. Noise at the Forward Landfill facility wa s evaluated in the Supplemental Environmental Impact Report (SEIR) for the Forward, Inc. Landfill 2018 Expansion Project (Grasset ti Environmental Consulting, 2019). Mitigations are detailed in the SEIR and include limitations on operation of heavy equipmen t within 1,500-ft of any occupied residence between 10pm and 7am or shielding from residences with a direct line of sight using a n earthen berm. Residents in proximity to the Forwa rd facility, as detailed in the SEIR, can also request funds for installatio n of a sound barrier and/or additional insulation. 3.6.4 Dust Control Dust at the Forward Landfill facility was evaluated in the Supplemental Environmental Impact Report (SEIR) for the Forward, Inc. Land fill 2018 Expansion Project (Grassetti Environmental Consulting, 2019). Mitigations are detailed in the SEIR and include, among st other items, installation of a wheel wash and limitations on traffic speed of 15 mph on unpaved roads. These measures have bee n implemented, along with other measures detailed in the following paragraphs that are relevant to the RRF/Compost facility. Dust is controlled at the site by (1) proper maintenance of haul roads (paving, grading, and watering), (2) application of fine wat er spray (dictated by the weather conditions and/or on an as-needed basis) on the active soil-covered work areas, soil excavation areas, and soil stockpile areas where conditions may result in fugitive dust; (3) application of organic dust suppressant, and (4) limiting the speed of all on-site vehicles to 15 mph. For dust control