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3-15 <br />Forward Composting Facility SWT Engineering <br /> Report of Composting Site Information - August 2019January 2022 <br />z:\projects\allied waste\forward\resource recovery facility\5 yr permit rvw 2019-2020\rcsi 2019\text\sec 3.doc <br />the Windrow turner, if used. These machines typically produce sound levels in the range of <br />approximately 85 to 90 decibels. Since the estimated sound level at 200 feet is <br />approximately that of the human voice during normal conversation, noise should not be a <br />health hazard to persons working approximately 200 feet from the equipment. A noise level <br />study conducted for a tub grinder manuf acturer shows the following sound pressure levels: <br />within 50 feet, 85.2 decibels; within 100 feet, 78.4 decibels; and within 200 feet, 73.5 <br />decibels. <br />It should be noted that noise produced at the facility also compl ies with provisions of the <br />San Joaquin Co unty Development Code, Title 9, Section 9 -1025.9 as specified in SWFP No. <br />39-AA-0020. <br />Noise at the Forward Landfill facility wa s evaluated in the Supplemental Environmental <br />Impact Report (SEIR) for the Forward, Inc. Landfill 2018 Expansion Project (Grasset ti <br />Environmental Consulting, 2019). Mitigations are detailed in the SEIR and include <br />limitations on operation of heavy equipmen t within 1,500-ft of any occupied residence <br />between 10pm and 7am or shielding from residences with a direct line of sight using a n <br />earthen berm. Residents in proximity to the Forwa rd facility, as detailed in the SEIR, can also <br />request funds for installatio n of a sound barrier and/or additional insulation. Due to the <br />site's remote location, the noise produced will not create an offs ite concern; therefore, no <br />special noise control devices will be needed at the RRF /Compost Facility. <br />3.6.4 Dust Control <br />Dust at the Forward Landfill facility was evaluated in the Supplemental Environmental <br />Impact Report (SEIR) for the Forward, Inc. Land fill 2018 Expansion Project (Grassetti <br />Environmental Consulting, 2019). Mitigations are detailed in the SEIR and include, among st <br />other items, installation of a wheel wash and limitations on traffic speed of 15 mph on <br />unpaved roads. These measures have bee n implemented, along with other measures <br />detailed in the following paragraphs that are relevant to the RRF/Compost facility. <br />Dust is controlled at the site by (1) proper maintenance of haul roads (paving, grading, and <br />watering), (2) application of fine wat er spray (dictated by the weather conditions and/or on <br />an as-needed basis) on the active soil-covered work areas, soil excavation areas, and soil <br />stockpile areas where conditions may result in fugitive dust; (3) application of organic dust <br />suppressant, and (4) limiting the speed of all on-site vehicles to 15 mph.less than those that <br />would cause visible dust emissions behind the ve hicle. For dust control purposes, surface <br />water runoff or on-site well water is applied to all main access and haul roads at least once <br />per day. All-weather surfacing is applied to any unpaved road segment that carries 50 or <br />more vehicle trips per day co ntinuously for more than 30 days. <br />Dirt roads and areas between active compost are watered, as necessary, to minimize dust <br />when equipment uses the roads/areas. Proper management of the moisture level of the <br />compost materials throughout the operation will minimize dust generation. The likelihood of <br />dust problems from the initial receiving, grinding, and compost pile formation and tu rning is <br />low. The active compost is monitored for moisture content, and water is added when <br />needed.