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with impermeable material and fitted with an automatic leak detection system between the two layers of impermeable material. Monitoring for leak detection shall also be completed (automatically) on a continuous basis throughout the duration of project operations. In the event a leak is detected, the applicant shall ensure the pond is drained and not used until the liner is repaired and shall notify appropriate response and regulatory agencies. Potential impacts from construction of a new septic system will be less than significant with implementation of the submission of a study to the Environmental Health Department, indicating that the area is suitable for septic system usage. The study must be approved by the Environmental Health Department prior to issuance of building permits and the sewage disposal system shall comply with the on-site sewage standards of San Joaquin County prior to approval. Potential impacts from construction of new storm water drainage facilities or expansion of such facilities will be less than significant with implementation of the mitigation measures identified in the comprehensive drainage plan for the project that the applicant is required to submit to the Public Works Department for approval, and ensure that all recommendations of the drainage plan are implemented. The project's contribution to cumulative impacts on wastewater treatment and stormwater drainage facilities will be less than significant with implementation of these mitigation measures. The project's impact to utilities and service systems has been identified as a potentially significant impact but will be reduced to a less than significant impact with the incorporation of the mitigation measures. Traffic The project site is adjacent to the City of Manteca and City of Lathrop and is expected to generate significant traffic volumes over the next ten years. The traffic analysis contained the following eight scenarios: 1. Existing (2010)conditions 2. Existing (2010)conditions Plus Project(Phases I and II) conditions 3. 2013 No Project conditions 4. 2013 Plus Project Phase I conditions 5. 2021 No Project conditions 6. 2021 Plus Project(Phases I and 11)conditions 7. 2035 Cumulative No Project conditions 8. 2035 Cumulative Plus Project(Phases I and II)conditions The baseline year and out-year forecast year were 2010 and 2035, respectively. The traffic analysis evaluates full-project impacts (i.e. impacts of the full increase in facility capacity expected to occur in 2035) on baseline 2010 conditions. In addition, the projects impacts were conducted in three future-year scenarios (2013, 2021, and 2035) tied to capacity increases planned for 2013 (Phase One capacity in place) and 2021 (Phase One plus Phase Two capacity in place)and to the current horizon year(full buildout of capacity in 2035). A total of 22 study intersections were included in the Level-of-Service analysis. Additionally, the traffic analysis also estimated the queue (vehicle back-up) lengths at the 1-5 and State Route 99 off-ramps, and at the Roth Road at-grade rail crossing. Project-added trips are estimated to be about 930 daily trips after Phase One construction and approximately 3,062 daily trips at full buildout (Phase One and Two combined). Of the 3,062 daily trips, 2,836 trips are by trucks and 226 trips are by passenger cars. The traffic analysis evaluated traffic-related impacts of the proposed project during both the weekday morning and evening peak hours. San Joaquin County PA-0900184 & 185\Union Pacific Community Development Page 14