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7.B. - Page 122 Chapter 5 Significant Irreversible Environmental Changes As described in Section 5 in the 2007 FEIR(pages 5-1 through 5-2),energy resources and construction materials would be required for construction and operation of the project,which would also apply to the proposed modifications.This commitment of energy and building materials would be commensurate with that of other development projects of similar size. Labor would also be committed for the construction of buildings and the upgrading and maintenance of onsite infrastructure systems necessary to support the project plus the proposed modifications. Fossil fuels would be used during construction,which would represent an irreversible commitment of this resource. Once constructed,the continued operation of the project with the proposed modifications would require a further commitment of energy resources in the form of fuel and electricity.This commitment would be a long-term obligation since the structures are likely to have a useful life of 20 to 30 years or more. However,consistent with the discussion in Section 4.10,Utilities,of the 2007 FEIR,the impacts of increased energy usage resulting from the project plus the proposed modifications are not considered significant adverse environmental impacts. Implementation of the proposed project would involve the following specific irreversible environmental changes: • The original project would lead to the removal of existing vegetation on-site,including 14 heritage trees and 112 other trees. However,200 trees would be planted on-site after construction. No new trees would be removed due to the proposed project modifications. • Commitment of energy,water,and other natural resources for the construction and operation of the proposed project is expected.The proposed project modifications would result in a minor increased use of energy for construction and operation.Utilization of these resources is not expected to represent significant amounts of available resources in the region. • An increase in vehicle trips on Middlefield Road and other surrounding roadways would be generated by the project which would increase slightly with the proposed modifications. Intersections in the project area are expected to handle the additional vehicle trips at acceptable levels of service with the proposed roadway improvements. • Pollutant emissions and fugitive dust from construction activities (from the original project and the proposed modifications)would occur;however,these would be short-term,incremental, and would be minimized by the implementation of standard conditions provided in Section 4.5, Air Quality,of this EIR.The additional vehicle trips on the surrounding roads (from the original project and the proposed modifications) would cause an incremental increase in air pollutants associated with vehicle exhaust.Stationary source pollutants would add to area and basin-wide air pollutant levels.These emissions would not exceed BAAQMD thresholds of significance. • Construction noise impacts (from the original project and proposed modification)would be incremental,temporary,and short-term.While slight increases in levels of noise over existing conditions would occur,operation of the proposed project would not lead to significant adverse noise impacts. Addendum No.2 to the Environmental Impact Report for September 2012 the Redwood City Costco Wholesale Project 5-1 ICF 00154.12