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South Coast Technology Center Project <br />CEQA Exemption 15183 <br />Table 4.6-2, Proiect and Countywide Energy Consumption, compares the Project's net change in <br />estimated energy consumption with the County's annual energy consumption. <br />Table 4.6-2 <br />Project and Countywide Energy Consumption <br />Project Net <br />Orange County <br />Percentage <br />Energy Type <br />Change Energy <br />Annual Energy <br />Increase <br />Consumption' <br />Consumption 2 <br />Countywide <br />Electricity Consum tion3 <br />2,012 MWh <br />20,243,721 MWh <br />0.0099% <br />Fuel Consumption <br />Construction Off -Road Fuel Consumption <br />34,671 gallons <br />14,182,623 gallons <br />0.2445% <br />Diesel <br />Construction On -Road Fuel Consumption <br />91,239 gallons <br />1,142,034,463 gallons <br />0.0080% <br />Gasoline <br />Construction On -Road Fuel Consumption <br />14,159 gallons <br />135,727,658 gallons <br />0.0104% <br />Diesel <br />Operational Fuel Consumption (Gasoline) <br />-21,900 gallons <br />1,088,796,204 gallons <br />-0.0020% <br />Gasoline <br />Operational Fuel Consumption Diesel <br />380,479 gallons <br />136,337,459 gallons <br />0.2791 % <br />Notes: <br />1. Project electricity consumptions as modeled in California Emissions Estimator Model Version 2022.1 (CaIEEMod) computer <br />model. Project fuel consumption calculated based on CaIEEMod results. Countywide operational fuel consumption, off -road <br />construction equipment diesel fuel consumption, and on -road fuel consumption are from CARB EMFAC2021. <br />2. The Project's increase in electricity consumption is compared to the total consumption in Orange County in 2022, the latest <br />year with data available. The Project increases in construction off -road and on -road fuel consumption are compared with the <br />projected Orange County off -road fuel consumption and Orange County on -road fuel consumption in 2024, respectively. The <br />Project's operational automotive fuel consumption is compared with the projected countywide on -road fuel consumption in <br />2026. <br />3. Orange County electricity consumption data source: California Energy Commission, Electricity Consumption by County, <br />http://www.ecdms.energy.ca.gov/elecbycounty.aspx, accessed March 1, 2024. <br />4. Construction Off -Road Diesel Fuel Consumption is based on the County's Mining/Construction Sector's fuel consumption in <br />2024 from CARB EMFAC Off -Road. <br />Source: Refer to Appendix A of Attachment D, Energy Assessment, for CaIEEMod outputs and assumptions used in this analysis. <br />As shown in Table 4.6-2, the Project's net change of operational electricity usage would constitute <br />an approximate 0.0099 percent increase over the County's typical annual electricity consumption. <br />The Project would not involve natural gas consumption, and therefore would result in a net <br />decrease of natural gas consumption. The Project would consume nominal electricity and natural <br />gas would not be consumed during construction. The Project's off -road construction equipment <br />would use diesel and would increase the County's mining/constructions sector's diesel fuel <br />consumption by approximately 0.2445 percent. The Project's on -road gasoline and diesel <br />consumption during construction (hauling trips, vendor trips, and worker trips) would increase the <br />County's gasoline and diesel consumption by approximately 0.0080 percent and 0.0104 percent, <br />respectively. Based on the Trip Generation Assessment, the Project operations would generate <br />approximately 386 fewer average daily trips compared to the existing conditions. However, as <br />discussed, the Project would generate more trips from medium- and heavy-duty trucks than <br />existing conditions, which use diesel with a lower mile per gallon efficiency rate and longer trip <br />lengths, resulting in higher diesel fuel consumption. The Project's net change operational diesel <br />fuel consumption would increase the County's diesel consumption by 0.2791 percent, and the <br />Project's net change in operational gasoline would reduce the County's gasoline consumption by <br />0.0020 percent. Therefore, Project operation would not substantially increase Orange County's <br />annual fuel consumption. As such, the Project's construction and operational energy consumption <br />would be nominal compared to the County's consumption. <br />July 2024 Page 42 <br />