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Figure 23. Building Construction Asphalt URBEMIS estimates asphalt emissions associated with asphalt off-gassing, asphalt off-road and onroad equipment, and worker trips. Figure 24 shows the first tab of the two asphalt paving tabs. Circled in red is URBEMIS’ best estimate of the total acreage to be paved with asphalt. That value equals 25% of the total building project acreage. This value should be overridden if a more accurate, project-specific value is available. The user should understand that, to reset the default acreage, the “Reset Acreage with Land Use Changes” value box must be unchecked. Otherwise, URBEMIS will replace the user entered number with the URBEMIS generated number whenever land uses is modified. The user can also select the Paving Equipment tab. URBEMIS will generate estimates of paving equipment based on total acreage to be paved. As with off-road construction equipment shown in other phases such as fine site grading, URBEMIS generates estimates of construction equipment that can be overridden by the user. URBEMIS2007 for Windows Users’ Guide Version 9.2 November 2007 Page 25
