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?EnvimrcmeratalAnalysi.c <br /> e) For a pxoject located within an airport � ❑ � <br /> 3and use plan or,where such a plan has <br /> not been adopted,within two miles of a <br /> public airport or public use airport,would <br /> the project expose people xesiding ot <br /> woxi�ing in the project area to excessive <br /> noise levels? <br /> � For a project within the viciruty of a r,] ❑ ❑ � <br /> private airstrip,would the project expose <br /> people residing or working in the project <br /> atea to excessive noise levels? <br /> a)Earpasure ofpersons to orger�eration ofr2oise levels in excess ofstandatds established in <br /> the localgeneral plan or rlaise otdinarrce, or applicable staridards ofother agerJCies? <br /> Construction of the proposed project and demolition of the e�cistiag pump station would result in <br /> maximum noise levels t�at would typically tange from 75 to 81 dBA at a distance of 50 feet(see <br /> Appendix J}. This range of noise levels would be less than the average levels f�om weekday traffic on <br /> US 101 at this distance. l�'hile noise from construction may occasionally be audible at the adjacent <br /> properties because of variarions in construction activity and traffic cor�ditions,most noise from the <br /> installation of the xeplacement pump and the toint-use path would be below background levels. <br /> The highest noise levels from construcrion of the proposed project would come from the pile driver <br /> used for up to 10 daps during the installation of the replacement pump station on the north side of <br /> US 101. The noise levels from pile driving would be 94 dBA L�q at 50 feet. On the north side of <br /> US 101, the nearest uses are regional commercial, One Marina development,a mixed-use residential <br /> development currendy under construction,and the houseboats along Redwood Creek. The One <br /> Marina Village residential units need to incorporate measures to reduce interior noise�e�els to meet <br /> city and state standards. These features would lessen the impact of noise from pile driving to less <br /> than 62 dBA Ley in the interior of anp occupied units. The houseboats along Redwood Creek are 800 <br /> to 1,300 feet from the pump starion site but 150 to 640 feet from US 101. At those distances,the <br /> noise levels from pile driving would be within the range of noise measurements froxn traffic on US <br /> 101. <br /> Public exposure to noise from construction would exceed the Ievels that the general plan considers <br /> norma3ly acceptable at adjacent commercial and mixed-use properties north and south of US 101. <br /> This activity would require the recommended construction mitigation measure,limiting construction <br /> to daqtime,hours on weekdays and using rourine noise suppression techniques (see miti�ation <br /> measures NOI 1,NOI 2,NOI 3,NOI 4, and NOI 5}. <br /> :'��.i US 101 Per�estriara Undercros.ring a�ad Baar <br /> rsdand Aaad Sto��n Drrain Pump 5tation Project <br />