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4.1 – Air Quality Draft Environmental Impact Report February 2021 14800 W. Schulte Road Logistics Center 4.1-29 product ROG emissions were estimated in CalEEMod based on the floor area of nonresidential buildings and on the default factor of pounds of ROG per building square foot per day. For parking lot land uses, CalEEMod estimates ROG emissions associated with use of parking surface degreasers based on a square footage of parking surface area and pounds of ROG per square foot per day. ROG off-gassing emissions result from evaporation of solvents contained in surface coatings, such as in paints and primers using during building maintenance. CalEEMod calculates the ROG evaporative emissions from application of nonresidential surface coatings based on the ROG emissions factor, the building square footage, the assumed fraction of surface area, and the reapplication rate. The ROG emissions factor is based on the ROG content of the surface coatings, and SJVAPCD’s Rule 4601 (Architectural Coatings) governs the ROG (or VOC) content for interior and exterior coatings. The model default reapplication rate of 10% of area per year is assumed. Consistent with CalEEMod defaults, it is assumed that the nonresidential surface area for painting equals 2 times the floor square footage, with 75% assumed for interior coating and 25% assumed for exterior surface coating (CAPCOA 2017). Landscape maintenance includes fuel combustion emissions from equipment such as lawn mowers, rototillers, shredders/grinders, blowers, trimmers, chain saws, and hedge trimmers. The emissions from landscape equipment use are estimated based on CalEEMod default values for emissions factors (grams per square foot of nonresidential building space per day) and number of summer days (when landscape maintenance would generally be performed) and winter days. For San Joaquin County, the average annual “summer” days are estimated to 365 days; however, it was assumed that landscaping equipment would likely only operate during the week (not weekends), so operational days were assumed to be 250 days per year in CalEEMod (CAPCOA 2017). Energy Sources As represented in CalEEMod, energy sources include emissions associated with building electricity and natural gas usage (non-hearth). Electricity use would contribute indirectly to criteria air pollutant emissions; however, the emissions from electricity use are only quantified for GHGs in CalEEMod, since criteria pollutant emissions occur at the site of the power plant, which is typically off site. CalEEMod default values for energy consumption for each land use were applied for the Project analysis. The energy use from nonresidential land uses was calculated in CalEEMod based on the Commercial and Residential Appliance Saturation Study (CAPCOA 2017). Mobile Sources Mobile sources for the Project would primarily be motor vehic les (automobiles, light -duty trucks, and heavy - duty trucks8) traveling to and from the Project site. Motor vehicles may be fueled with gasoline, diesel, or alternative fuels. Emissions from the mobile sources during operation of the Project were estimated using a spreadsheet -based model and emission s factors from the CARB EMFAC2017 and EPA AP -42 factors for paved road dust generation. Vehicle trip lengths were assumed to be 40 miles for truck trips (in accordance with South Coast Air Quality Management Dis trict [SCAQMD] guidance) and 14.7 miles for passenger car trips (CalEEMod default) for the Project. Based on the Traffic Impact Analysis prepared for the Project by Advanced Mobility Group (Appendix F) and Section 4.7, Transportation, of this Draft Environmental Impact Report, the Project would generate 1,182 daily trips. Based on 2016 ITE Warehouse Land Use, 801 trips would be passenger vehicles, light-duty trucks, and motorcycles (68%), 8 “Heavy-duty trucks” include medium-heavy-duty trucks (three-axle) and heavy-heavy-duty trucks (four-plus-axle).