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Consultant's key staff shall attend this meeting and then be available to continue immediately with the next step of <br />performing the site walkdown and data gathering. <br />Task B: Site/System Wallsdown and Data Gathering <br />The CH2M Hill Team (Team) would continue with this task as part of the same site trip as the Project Kickoff <br />Meeting. Colton Electric staff shall be present to assist Consultant with the site wallsdown and data gathering. <br />The site walkdown shall be performed to achieve the following: <br />I . Review the areas where the anticipated new loads will be added: Pellisier Ranch, new housing area, <br />condemnation loads locations, new industry locations, open acreage behind the power generating plant. <br />2. Estimate the load requirements, continuous and demand kW, and the number of buildings/bomes/stmetures <br />that could be added to these areas in the future. The Team shall apply its expertise with these types of <br />developments to estimate the future load requirements in conjunction with any specific information <br />available from Colton Electric or the property owners/developers. <br />3. Review the loading on existing circuits and substations that may be available to provide the power to <br />supply the future loads; determine which circuits could be extended to the new load locations. <br />4. Review continuous and maximum load information; establish time of year for peak loading. <br />5. Estimate any loads that are not documented using pole mounted transformer ratings; or, as an option, utilize <br />end user billing information integrated with the system model (a more time consuming process not <br />anticipated at this time). <br />6. Review sizes of circuit conductor installed and standards for sizing conductors, full load and emergency <br />ratings, margins and safety factors used in the design. <br />7. Visit existing substation sites and determine availability of spare circuits, breaker positions and capacity to <br />the supply the new loads. <br />8. Review general overall physical condition of existing installed overhead circuits. <br />9. Review existing maintenance and operation records. <br />10. Review existing switching and backup criteria and standards used to provide system and load redundancy <br />and reliability. <br />11. Review possible locations and interfaces necessary to integrate a new substation if required; review <br />possible 69 kV interconnections. <br />12. Review alternatives for supplying loads on both sides of the river; review alternative river crossings and/or <br />utilizing the Riverside Bridge for cable crossings. <br />13. Gather the above information and secure other information and copies for further use and analysis as part of <br />Task C. <br />14. Review the Aspen Oneliner model, assuming the existing system model is available and does not have to <br />be recreated for the work. <br />15. Conduct a site exit meeting with Colton Electric to convey status and results of site walkdown and to <br />confirm the next steps in the process. <br />Task C: Data Analysis, Evaluation and Preliminary Alternatives <br />The Team will analyze and evaluate the information and data gathered in Task B to determine the most viable <br />alternatives that could be used to provide power to the future loads governed by this study. Possible infrastructure <br />modifications and changes to the existing 12.47 kV distribution system shall be evaluated based on the information <br />and data gathered, while ensuring continued reliability and safety of the system. To support the evaluation, the <br />Team shall run the Aspen Oncliner engineering software using the Colton Electric system model with the addition of <br />specific alternatives for supplying the new loads. Scenarios shall be evaluated to ensure that the overall system <br />remains viable with the new proposed modifications. As part of the analysis, switching and redundancy <br />requirements for the new loads shall be evaluated to ensure reliability concerns are satisfied and the new design <br />meets existing Colton Electric standards. Conceptual type drawings and/or sketches shall be prepared to support the <br />overall evaluation and provide a clear representation of the various alternatives, As part of this task, preliminary <br />overall order -of -magnitude cost estimates and implementation schedules shall be developed for comparison <br />purposes and discussions with Colton Electric. <br />The Team shall use the associated data gathered at the site to deternume the viable options and locations for <br />incorporating a possible new 69 kV/12.47 kV substation, which could be used to provide the necessary power to the <br />new loads. Parameters to be utilized in determining the possible location and use of a new substation would include: <br />ORANGE\GPP\I 3728 1 <br />14 <br />