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Construction -Related Energy Consumption
<br />Estimated Energy Consumption
<br />Heavy-duty construction equipment associated with demolition, grading, the construction of utilities,
<br />paving, and building construction would include, excavators, graders, tractors/loaders/backhoes,
<br />dozers, scrapers, air compressors, cranes, forklifts, generators, pumps, welders, rollers, trenchers and
<br />pavers. The majority of the equipment would likely be diesel -fueled; however, smaller equipment, such
<br />as air compressors and forklifts may be electric, gas, or natural gas -fueled. For the purposes of this
<br />assessment, it is assumed that the construction equipment would be diesel -fueled, due to the
<br />speculative nature of specifying the amounts and types of non -diesel equipment that might be used,
<br />and the difficulties in calculating the energy, which would be consumed by this non -diesel equipment.
<br />The number of construction workers required to construct the project would vary based on the phase of
<br />construction and the activity taking place. The transportation fuel required by construction workers to
<br />travel to and from the site would depend on the total number of worker trips estimated for the duration
<br />of construction activity. A 2007 study by the California Department of Transportation (Caltrans)
<br />estimates the statewide average fuel economy for all vehicle types (automobiles, trucks, and
<br />motorcycles) in the year 2020 is 18.78 miles per gallon.' Assuming construction worker vehicles have
<br />an average fuel economy consistent with the Caltrans study and each construction worker commutes
<br />an average of 20 miles a day to and from the site, the maximum 50 workers on -site during each phase
<br />of the project is estimated to consume approximately 53 gallons of gasoline a day. Assuming all 50
<br />construction workers are employed at the site for a year (52 weeks), the fuel used by construction
<br />workers commuting to the site is approximately 345 barrels (13,780 gallons) of gasoline and represents
<br />less than 0.00010 percent of the statewide transportation gasoline consumption in 2016, which is the
<br />latest year that data is available.'
<br />Construction equipment fuels (e.g., diesel, gasoline, natural gas) would be provided by local or regional
<br />suppliers and vendors. Electricity would be supplied by the local utility provider (e.g., Southern
<br />California Edison) via existing connections. A temporary water supply, primarily for fugitive dust
<br />suppression and street sweeping, would also be supplied by the local provider (e.g., City).
<br />Electricity used during construction to provide temporary power for lighting and electronic equipment
<br />(e.g., computers, etc.) inside temporary construction trailers and for outdoor lighting when necessary for
<br />general construction activity would generally not result in a substantial increase in on -site electricity
<br />use. Electricity use during construction would be variable depending on lighting needs and the use of
<br />electric -powered equipment and would be temporary for the duration of construction activities. Thus,
<br />electricity use during construction would generally be considered negligible.
<br />Energy Conservation: Regulatory Compliance
<br />The project would utilize construction contractors who demonstrate compliance with applicable CARB
<br />regulations governing the accelerated retrofitting, repowering, or replacement of heavy-duty diesel on -
<br />and off -road equipment. CARB has adopted an Airborne Toxic Control Measure to limit heavy-duty
<br />diesel motor vehicle idling in order to reduce public exposure to diesel particulate matter and other
<br />TACs. Compliance with the above anti -idling and emissions regulations would result in a more efficient
<br />7 2007 California Motor Vehicle Stock, Travel and Fuel Forecast, California Department of Transportation, Table 1, (2008).
<br />'California 2015 Transportation gasoline consumption — 348,830 thousand barrels;
<br />Legacy Sunflower Apartments
<br />Mitigated Negative Declaration — March 14, 2019
<br />Page 48
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