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UC DAVIS: Office of Resource Management and Planning September 2, 2005 DEANS, DIRECTORS, DEPARTMENT CHAIRS, AND ADMINISTRATIVE OFFICERS RE: Electrical Improvements Phase 3 Draft Tiered Initial Study and Proposed Negative Declaration PROPOSED PROJECT UC Davis proposes to construct and operate Electrical Improvements Phase 3, a project intended to upgrade and add capacity to the existing campus electrical system to meet projected campus needs through 2010. As student enrollment has grown, campus facilities have expanded to accommodate that growth, with a concomitant increase in electrical demand. The accumulated peak demand in 2010 is estimated to be 75.6 mega volt amps (MVA), necessitating capacity and distribution improvements in the campus electrical system. The proposed project consists of two interrelated components that are on physically separate sites, as described below. SOUTH CAMPUS - EXPANDED SUBSTATION The proposed project would provide a new substation, which would be a contiguous expansion of the existing main substation on the south campus. The expanded substation would include one new 30 MVA transformer, a 1,200 amp circuit, and new distribution lines. An approximately 600 gross square feet (gsf) prefabricated switchgear enclosure and an approximately 300 gsf prefabricated control room would be installed on the south campus to house a switchgear and related monitoring and control equipment. A second connection would be made from Pacific Gas & Electric (PG&E) transmission lines to the expanded substation in order to increase system reliability. CENTRAL CAMPUS - NEW DISTRIBUTION LINES AND BUILDING TO HOUSE MONITORING AND CONTROL EQUIPMENT The project will also provide new distribution lines from the new substation to the new Thermal Energy Storage (TES) tank site switchgear, near Fleet Services and north of the UC Davis Arboretum; to facilitate load shifting using centralized switching technology. An approximately 1,000 gsf prefabricated switchgear enclosure would be installed on the central campus to house the switchgear. The new distribution lines will be located in an existing duct bank; however a new extension of that duct bank may be needed from the existing bank to the switchgear enclosure. The project would also include additional distribution lines from the TES switchgear to the Health Sciences District switchgear, through an existing duct bank. The site layout for both the substation and distribution lines would be planned to accommodate future expansions of the electrical system; however, this Initial Study evaluates the potential impacts of only the Electrical Improvements Phase 3 project, and any future expansion of the electrical system would require additional environmental review. I am writing to inform you that a Draft Tiered Initial Study has been prepared analyzing the potential environmental effects of the proposed project. You are invited to comment on the Draft Tiered Initial Study and Proposed Negative Declaration through Monday, October 3, 2005. Copies of the Draft Tiered Initial Study and Proposed Negative Declaration are available during normal operating hours at the UC Davis Office of Resource Management and Planning in 376 Mrak Hall on campus; at Reserves in the UC Davis Shields Library; at the Yolo County Public Library, 315 E. 14th Street, Davis; at the Vacaville Public Library, 1020 Ulatis Drive, Vacaville; and online at http://www.ormp.ucdavis.edu/environreview/. The public notice for this project is also available online at http://www.ormp.ucdavis.edu/environreview/. The notice includes a brief project description, a statement of project objectives, and a summary of potential impacts. Comments on this Draft Tiered Initial Study must be received by 5:00 p.m. on Monday, October 3, 2005. They may be e-mailed to environreview@ucdavis.edu or mailed to: John A. Meyer Vice Chancellor-Resource Management and Planning University of California One Shields Avenue Davis, CA 95616 If you have any questions, please contact Sid England, Director of Environmental Planning, at (530) 752-2432 or Rick Keller, Assistant Vice Chancellor-Capital Resource Management, at (530) 752-2433. Sincerely, John A. Meyer Vice Chancellor-Resource Management and Planning 05-087
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