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Section 5 <br />heavy equipment at Centennial Park and at the Heritage Museum, There is the <br />potential that the operation of the heavy equipment could disrupt the breeding <br />patterns of migratory birds if they are nesting in nearby trees. To minimize noise <br />impacts to nesting birds, a 24-foot high noise wall would be provided around <br />each injection well site and construction equipped would be fitted with noise <br />reduction features, such as mufflers and engine shrouds to reduce potential <br />noise impacts to nesting birds. With the implernentation of Mitigation Measures <br />BIO-1 and B10-2 potential significant adverse impacts to migratory birds would <br />be reduced to a less than significant level. <br />Alternative 3: Reduced intensity Alternative <br />Under Alternative 3, one less injection well would be constructed. There would be <br />less construction activity and less potential for migratory birds to be adversely <br />impacted by construction noise. Even though there might be less potential for <br />disruption to nesting birds, construction activities under Alternative 3 would still <br />have the potential to result in significant adverse impacts to the breeding patterns <br />of migratory birds. With the implementation of Mitigation Measures BIO-1 and <br />1310-2 potential significant adverse impacts to migratory birds would be reduced <br />to a less than significant level. <br />Alternative 4: Pipeline Design Alternative <br />Under Alternative 4, portions of the pipeline alignment would extend through <br />open space. The open space area where the pipeline alignment would occur has <br />Jess trees and nesting opportunities for migratory birds to be adversely irripacted <br />by construction noise impacts. Even though there might be less potential for <br />disruption to nesting birds, the construction activities under Alternative 4 would <br />still have the potential to result in significant adverse impacts to the breeding <br />patterns of migratory birds. With the implementation of Mitigation Measures BIO- <br />1 and BIO-2 potential to significant adverse impacts to migratory birds would be <br />reduced to a less than significant level, <br />Mitigation Measures <br />BIO-1: At each well site a 24 foot noise wall will be provided around the work <br />area to minimize noise impacts, <br />BIO-2: All heavy equipment will be equipped with noise reduction features, such <br />as mufflers and engine shrouds. <br />Level of Impact after Mitigation <br />Alternative 1: No adverse impact <br />Alternative 2: Less than significant adverse impact with Mitigation Measure B10-1 <br />and BID-2. <br />Mid Basin Centennial Park AC&Ai Project Final EIR 5-60 <br />