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Pleasanton Cateway Envrronmentai Checklist Standards of Significance For purposes of this environmental document, an impact is considered significant if the proposed project would: • Result in the depletion of a mineral resource. Lcss'Chan Potentially Significant Lcss'fhan Significant With Mitigation Significant No Issues Impact Incorporated Impact Impact Mineral Resources Would the project: a) Result in the loss of availability of a known mineral ~ ~ ~ 0 resource that would be of value to the region and the residents of the state? b) Result in the loss of availability of a locally important ~ ~ ~ 0 mineral resource recovery site delineated on a local general plan, specitic plan or other land use plan`? Discussion a-b) The proposed project site is not included or delineated as a Mineral Resource Zone. Mining has not occurred on the project site, and implementation of the project would not affect the availabil- ity of any mineral resource. Therefore, this would be categorized as no-impact. 11. NOISE Environmental Setting External noise sources that could affect the site include over flights to/from the Livermore Airport, traf- fic noise from Stanley Boulevard and adjacent streets, and the operations of the Union Pacitic Railroad including the Alameda County Express commuter train. Noise emanating from the site are expected to fall within the acceptable levels identified in the noise or- dinance. Standards of Significance For purposes of this environmental document, an impact is considered significant if the proposed project would: • Result in exterior noise levels above the acceptable level of 70 dBA; • Result in interior noise levels exceeding 45 dBA; • Result in construction noise levels that do no meet the City of Pleasanton Noise Ordinance. Pleasanton Gateway Initial Study Page 28 of 37 November ~ 2006