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III. ENVIRONMENTAL SETTING,IMPACTS AND MITIGATION MEASURES B. AIR QUALITY Mitigation Measures Identified in This Report Mitigation Measure B.4a: The project applicant shall ensure that all roll-off containers and bins are washed/rinsed free of putrescible wastes prior to storage in the container storage area on the western portion of the site. Mitigation Measure B.4b: Thero'ect applicant shall to all roll-off containers P J PP iP containing ground greenwaste materials at the end of each working day. Mitigation Measure B.4c: The project applicant shall formulate a progressive odor management protocol. This protocol will allow the project applicant to respond to odor complaints and revise operations as necessary. The City, LEA,and/or the SJVUAPCD shall notify the project sponsor of all odor complaints received regarding the facility. The protocol shall include progressive measures to be made in the event of repeated, verified complaints. When the LEA or SJVUAPCD verify strong odors at off-site receptors, the sponsor shall make changes in site operations to reduce the potential for odors. Odors may be reduced by limiting incoming throughput, limiting incoming materials to certain types, further limiting the number hours materials may be stored at the site, installing odor control equipment(e.g., a misting system),removal and disposal of odiferous compounds, or other activities. Significance After Mitigation: Less than significant. Impact B.5: Project operations could generate particulate emissions at a level that could be harmful to site workers and the public(Significant). Particulate emissions can be subdivided into total particulate matter(PM),which includes large- sized particles typically associated with nuisance-type impacts, such as reduced visibility and soiling of exposed surfaces;PM-10 which is the smaller respirable component of total PM; and, diesel particulates, which is a subset of PM-10 for those projects that involve diesel-powered vehicles or equipment. The project would generate each of these types of particulate emissions. Diesel particulate emissions associated with project operations were identified as an issue of concern by Air District staff. Current sources of particulate emissions at the site include on-road motor vehicles, off-road mobile equipment and area or fugitive sources. On-road motor vehicle (i.e., vehicles allowed on public roads) emissions are generated by existing collection trucks and employee vehicles. Current collection truck trips are at roughly 90 percent of their anticipated level at project buildout; however, collected wastes are now taken either to the East Stockton Transfer Station or directly to landfill as the site currently handles just 1.5 tons per day (tpd) of waste. For these reasons, off-road mobile equipment(i.e.,mobile equipment and vehicles whose activities are confined to the site)operations and associated emissions are assumed to be negligible under existing conditions. On-site area sources include emissions from such activities as fuel storage and handling. Particulate emissions associated with area sources are expected to be minor under existing conditions. Stockton Scavenger Transfer Station Erpansion III.B.17 ESA 1990190