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I I I I I I I I I I I I I ! I I I I I 23. a. Contin~ed. The proposed project will not result in a~r pollutant levels in excess of state standards for the following reasons: o The intersection of Lexington and Woodhil1 Drive will carry less than 15,000 vehicles per day. and no a~proach will operate at less than level of service C during the PM peak hour. This volume of traffic and level of traffic operation are not associated wtth violat10ns of a1r quality standards. o The imolementation of the vehicle 1nspectlon and maintenance program w111 reduce average CO emission rates substantially. o Beyond the Woodh1l1/Lexlngton 1ntersact10n. project-generat~d traff1c w111 be dispersed such that the impact at any par- t1cular 1ntersectlon w11l be minor. The project will have 11ttle or no effect on the Lexington/Un1vers1ty 1ntersect10n since it 15 almost five miles to the south and LeXington Is not a cJntlnuous. through traff1c route. b. Dust will be generated during project construction actlv1tles. Construct10n will dlstur~ the existing vegetative ground cover allow1ng s011 material to become ~lrborne. Construction dust 1mpacts w111 be temporary, lasting only during the construction per10d. Dust generat10n can be m1n1~1zed by repaving or revege- tat1n9 as qu1ckly as poss1ble. applying water or dust suppressants dur1ng dry per10ds. and ceasing construction act1~ltes dur1ng per10ds of high winds. c. Noise w1l1 be generated by motor vehicle traffic attracted to the project. Project-generated traff1c wl11 add to exlst1ng noise levels along the access roads in the vicinity of the project. The nearest rece1ver sites are four eX1sting res1dences on tne east side of Lexington Avenu~ adjacent to the project. There are alsc residences along Lexington Avenue south of the project site and alollg Woodhill Drive both east and west of the project. Based on Figure 9 of the Traffic Study (Appendix)1 the traffic volumes will Increase by as much as 19 percent en LeXington Avenue and by as much as 37 percent on Woodh11l Dr1ve. In tenms of traf- f1c-generated no1se. traffic volumes must double (1ncrease by 100 percent) to cause a 3 dBA change 1n noise levels. and a 3 dBA c11ange Is the smalle~t change 1n noise levels not1ceable to most people for a t1me-vary1ng noise source such as traffic. The 19 percent 1ncrease In traffic on Lex1ngton w11l cause n01se levels to 1ncrease by approx1mately 0.8 dB^. The 37 percent 1ncrease 1n traffic on Woodh11~ will cause n01se l~vels to 1ncrease by lpprox1- n~tely 1.4 dBA. These Incre3ses i.l no1se levels are Ins1gn1f1cant and w11' not result ~n a perce1vable impact. 11