75C - PH - BRISTOL EIR FROM WARNER TO ST. ANDREW

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Table 3 -3 provides the air pollutant emission projections antici- pated for existing conditions and future conditions in the design year (2006) with and without the project. As shown therein, there will be a decrease in future carbon monoxide emissions of 3666 pounds /day with versus without the project in 2006. There will also be a decrease in hydrocarbon emissions with the project (376 pounds /day in 2006). There will be an increase in nitrogen dioxide emissions of 5 pounds /day in 2006. There will be no change in the emissions of sulfur dioxides and particulates with versus without the project. The widening of Bristol Street will relieve congestion which will lead to slightly higher speeds and shorter travel times. The increase in speed will cause a significant reduction of carbon monoxide and total hydrocarbon pollutant emissions from the vehi- cles using the road. However, higher speeds increase emissions of oxides of nitrogen from each vehicle on the roadway. Thus, on a short and long term basis, the proposed project will have a beneficial impact on ambient air quality in terms of CO, THC and the secondary pollutants formed as a result of these primary pollutants. The project will, however, increase the localized effects of NOx by accommodating more vehicles at higher speeds within the roadbed and thereby increasing the concentra- tion of this pollutant adjacent to the roadbed. TABLE 3 -3 PROJECT - RELATED MOTOR VEHICLE M419SION INVENTORY COMPARISONI (Pounds /Day) ---------------------------- Scenario co THC Nox sox Parts. 1987 (Current Year) - No-Project 7792 790 583 69 108 - Project NA NA NA NA NA - Change with Proj. NA NA NA NA NA 2006 (Future Year) - No- Project 9162 947 520 90 122 - Project 5496 571 525 90 122 r - Change with Proj. -3666 -376 +5 0 0 _- Note: NA = Not Available. -- - - -- -- --- -- - - - - -- 1. Values are the same for all three alternatives, 3 -8 75C -447