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Calculate the by model year LDV idling emission rates by multiplying the 5 MPH Running <br />emission rates by 5 (g/mile x mile/hr = g/hr). <br />Therefore emissions are multiplied by a factor of 5 to account for possible idling activities. <br />For 160 miles of in-structure travel, the automotive exhaust pollutants compare to the threshold <br />as follows assuming 90% of vehicles are gas powered and 10% are diesel powered: <br />Pollutant In Structure Emissions Emissions of Concern Impact vs. Threshold <br />CO 4.3 lb/hour 263.6 lb/hour 1.6% <br />NOx 0. 5 lb/hour 15.4 lb/hour 3.2% <br />The worst-case CO or NO-) exposure to any resident close to the proposed structure is negligible <br />even under the unlikely worst case assumption that 531 vehicles arrive and 531 vehicles depart <br />in a single hour.