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5.12 TRAFFIC AND TRANSPORTATION <br /> Additional information regarding airport land use is provided in Section 5.6,Land Use. <br /> Information regarding potential impacts on aircraft operations is found in Section 5.12.2.5. <br /> 5.12.2 Environmental Analysis <br /> This section assesses the traffic and transportation impacts associated with the construction <br /> and operation of the project. This analysis primarily examines impacts on roadway levels of <br /> service expected during both construction and operation of the project. <br /> Potential traffic impacts during construction,as well as plant operation after construction, <br /> have been considered and analyzed. <br /> Construction will start in first quarter 2010 and last 24 months;operations will start in first <br /> quarter 2012. During the peak construction phase (month 16), construction will require at <br /> most 450 workers (225 workers per shift). During operations,the project is expected to <br /> require 21 staff members on average.To analyze the"worst-case" scenario,traffic impacts <br /> associated with peak construction traffic were analyzed. <br /> A quantitative traffic analysis was not conducted for the long-term operations phase since it <br /> would generate a low volume of trips. Thus,operational traffic will not have a measurable <br /> impact on the study area roadways; only the impacts of construction traffic were analyzed. <br /> 5.12.2.1 Significance Criteria <br /> The significance criteria have been developed using guidance provided in the CEQA, <br /> Appendix G (Title 14 California Code of Regulations 15000 et seq.) and relevant local <br /> policies. Impacts of the proposed project to transportation and circulation will be considered <br /> significant if the following criteria are met: <br /> • Cause an increase in traffic that is substantial in relation to the existing traffic load and <br /> capacity of the street system <br /> • Exceed,either individually or cumulatively, a LOS standard established by the county <br /> congestion management agency for designated roads or highways <br /> • Result in a change in air traffic patterns,including either an increase in traffic levels or a <br /> change in location that results in substantial safety risks <br /> • Substantially increase hazards due to a design feature or incompatible uses <br /> • Result in inadequate emergency access <br /> • Result in inadequate parking capacity <br /> • Conflict with adopted policies,plans, or programs supporting alternative transportation <br /> For LOS requirements,the County's requirements will be the standard used in this study. <br /> 5.12.2.2 "With Project' Traffic Conditions and Level of Service Analysis <br /> 5.12.2.2.1 Construction Traffic Generation <br /> Estimates of the average and peak construction traffic during the onsite construction period <br /> were provided by the applicant. Based on experience with similar projects,it is estimated <br /> that 20 percent of the workforce will carpool and the average vehicle occupancy will be <br /> two persons per vehicle for carpools. During the peak month,the estimated number of <br /> SAC/371322/082380003(LEC_5.12_TRAFFIC_AND_TRANSPORTATION.DOC) 5.12-15 <br />