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r <br />f <br />Federal Standards: Table 4 -8 details the future design year <br />maximum hourly equivalent noise levels adjacent to each roadway <br />link with and without the proposed widening. Under Federal noise <br />standards, traffic noise impacts occur when predicted noise le- <br />vels approach or exceed the noise abatement criteria, or when <br />predicted traffic noise levels substantially exceed the existing <br />noise levels. <br />TABLE 4 -8 <br />FUTURE EXTERIOR LEG EXPOSURE <br />ADJACENT TO BRISTOL STREET <br />-..----------------------------------------- __-_-------- _- --_____ - -__- <br />Roadway (mph) Pea Leq at Leq Contour (ft)2 <br />VPH 75 ft. 2 67 dSA 62 dBA <br />No Project -(Year 2006) <br />Bristol Street (35,40 mph) <br />-N10 Warner Avenue <br />-N10 Edinger Avenue <br />-N10 McFadden Avenue <br />-N10 Bishop Street <br />-N10 First Street <br />-N10 Santa Ana Boulevard <br />-N10 Fifth Street <br />-N10 Civic Center Drive <br />-N10 Washington Street <br />-N10 Seventeenth Street <br />-N10 Santa Clara Avenue <br />Proposed Project -(Year 2006)3 <br />Bristol. Street (35,40 mph) <br />3208 <br />71 <br />163 <br />508 <br />3064 <br />69 <br />114 <br />351 <br />3424 <br />70 <br />127 <br />392 <br />3840 <br />70 <br />141 <br />440 <br />3408 <br />70 <br />126 <br />390 <br />3408 <br />70 <br />126 <br />390 <br />3520 <br />70 <br />129 <br />403 <br />3584 <br />70 <br />131 <br />410 <br />3784 <br />70 <br />139 <br />433 <br />4112 <br />72 <br />207 <br />651 <br />4664 <br />72 <br />235 <br />739 <br />-9/0 <br />Warner Avenue <br />3206 <br />71 <br />164 <br />509 <br />-N /O <br />Edinger Avenue <br />3064 <br />69 <br />116 <br />352 <br />-N10 <br />McFadden Avenue <br />3424 <br />70 <br />129 <br />393 <br />-N10 <br />Bishop Street <br />3840 <br />74 <br />143 <br />440 <br />-N10 <br />First Street <br />3408 <br />70 <br />128 <br />391 <br />-N 10 <br />Santa Ana Boulevard <br />3408 <br />70 <br />128 <br />391 <br />-N10 <br />Fifth Street <br />3520 <br />70 <br />132 <br />404 <br />-N10 <br />Civic Center Drive <br />3584 <br />70 <br />134 <br />411 <br />-N 10 <br />Washington Street <br />3784 <br />70 <br />141 <br />434 <br />-N10 <br />Seventeenth Street <br />4112 <br />72 <br />209 <br />652 <br />--N10 <br />Santa Clara Avenue <br />4664 <br />73 <br />236 <br />739 <br />1. <br />PM peak hour 2 -way <br />vehicle volume <br />in vehicles <br />per hour. <br />2. <br />Measured from the <br />Bristol Street <br />centerline. <br />All <br />contours <br />ignore localized shielding effects. <br />3. Proposed project values <br />are identical for all <br />three <br />alterna- <br />tives. <br />4 -16 <br />