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Home My WebLink About2013/10/01 Item 11 Presentation - Moot^? KI CF *Hr CRY COUNCIL May 11, 2010 The Chum Vista City Council offers its strong support for the project Ms. Mary iu ley, Protect Manager to develop a 1 ew t of i � Chin 4 Bay Bivd Substation Relocation San Diego Gas & Electric San Diego, rkCt.,CP21C Bayfront to replace the fifty year old substation that constrains San Diego, CA 82123 mtuneyflsemprautihUes.com Dear Ms. Turley: The Chula Vista City oil offers its strong support for the project to develop a ne to of the art substation on the Chula Vista Bayfront to r ce the fifty year old substation that constrains develop of public access, enhanced wildlife corridors, substantial eco development and public serving infrastructure opportunities for egion. The City is eager to have the new substation built and the old substation removed immediately following the decommissioning and dismantling of the South Bay Power Plant. The decommissioning and removal of the South Bay Power Plant (SBPP) and existing Substationiswitchyard were the primary purposes behind the State's facilitation of the acquisition of the SBPP by the Port of San Diego w 1997 Dismantling should have begun between November 2009 and February 28. 2010. The removal of infrastructure constraints the existing substation, transm+ssion and distribution lattice towers and utility poles, are a primary component of the 2004 Memorandum of Understanding between the City and SDG &E. The removal of this infrastructure along with the remaining tra io and distribution towers and utility poles are a critical cote ent n of maximizing the opportunity for the Bay Front Master Plan to ealize its full potential and create the wildlife habitat protection and quality public amenities that Chula Vista and the South Bay community have been planning for over a decade. With SDG &E and the California Public Utilities Commission assistance we took the first major steps in restoring this invaluable Bayfront site and returning it to the people of South Bay. The Otay Metro Loop project undergrounded three miles of 230kv transmission lines along the Bayfront in 2006 to 2008 and the City invested over $20,000,000 in 20a funds to underground the existing 938kv transmission lines to facilitate the removal of the lattice towers from the Bay Front. The results of the first phase of the tower removal that occurred north of J Street last December have amazed all project participants. The City appreciates SDG &E's and the San Diego Unified Port istrict's cooperation in moving forward another component of the DG&EICity MOU, the development of a new smaller and lower file substation at the southern edge of the existing South Bay P wer Plant (SBPP) site. The construction of a new substation with a quate buffer and screening, including solid walls, the removal of th remaining utility poles and enhanced landscaping softening, will silo the proposed facility to co exist in harmony with the adjacent wild a habitat and conforms with the high expectations established by 11 Bay Front Master Plan that the community has invested so much in bringing to fruition over this past decade. We strongly encou ge SDG &E to work with the City and Port to incorporate the screen g and removal of the remaining wooden utility and transmi ion poles and undergrounding from J Street to the Substati in its application to the CPUC. The City ks that the CPUC staff and Commissioners recognize the major fin cial commitment and investment that Chula Vista has made in thr project to date and urges the Commission to support this important next step in updating the regional transmission and distribution system and improving kcal onorgy reliability through a strong investment in the Bay Boulevard Substation project Thank you very much for your efforts and generous consideration. The City of Chula Vista looks forward to working with SDG &E and the CPUC on implementing a project in which we can all take great pride for the next several decades Sincerely, Mayor and Council CC: David Geier, VP Distribution & Transmission Infrastructure The City appreciates SDG &E's and the San Diego Unified Part �A-FW" ol jp d`JGU.. Visual Simulation Visual Simulation r City of Chula Vista South day Substation Relocation Torben Aabo Power Cable Consultants, Inc. Ballston Spa, NY Power Cable • 40 years Experience in the Cable Business Manufacturing Engineering Research Design of Underground Transmission Cable Systems Quality Control /Quality Assurance Inspections of Cable Manufacturing Facilities Inspections during Installation Audit of Transmission Cable Systems PCC's Involvement with Underground Projects before Public Utility Commissions Vermont -two transmission li Safety and esth Colorado - 7.5 transmission li Esthetics sections of 115 kV ne undergrounded etics miles of 115 kV ne undergrounded R PCC's Involvement with Underground Projects before PUCs Connecticut - 345 kV transmission lines Environmental, safety and esthetics ► 20 miles of 345 kV XLPE transmission cable circuits were installed. R ACC's Involvement with Underground Project before PUCs City of Chino Hills - 3.5 miles of 500 kV line through the center of the city Safety and esthetics Directly affected 260 property owners at the edge of the power line and thousands more with 200 foot tall towers visible from a wide area of the city 10 Overhead lines will affect the area Esthetics and land use Further expansion within the substation, as stated by SDG &E, may require additional transmission lines entering the substation All other transmission lines will be undergrounded, except the 230 kV line 11 System Load {requirements SDE &E estimated load requirements: 11 75MVA (2950 amperes) Some questions regarding how this load requirement was established: Required load with the proposed substation equipment. Required load with the future expanded substation equipment. Load requirements can be met with two cables /phase 12 230 kV Pole--> <--69 kV Transition Pole ONE-- Visual Simulation flon 138 kV Pole to be eliminated 230 W Pole --> i r W wl t h t h e Undergroun "dw R- <- Change to 230 W Transition Structure ii I r 4�1 Visual Simulation 14 Estimated Cost of Undergrounding 300 feet of 230 kV Cable Total Estimated Project Cost $15 7 M Undergrounding 300 ft. will add $2,663,000 or 1.7% to the overall project 15 2310 kV Transition Structure Visual Simulation 5. 16 Estimated host of 1 ,000 feet of Undergrounding zoo kV Cable Total Estimated Project Cost $15 7 M Undergrounding 1,000 ft. will add $4,524,000 or 2.9% to the overall project 17 -4r'roposed Solution Negotiate with easement property owners to install transition structure in the easement Present to CAPUC the proposed undergrounding of the 230 kV line from other side of highway into substation at an estimated cost of $4,524,000 an increase of 2.9% to the estimated 157M South Bay Substation Relocation Project \1111 18 President Michael R. Peevey of CAPUC statement when announcing the China Hills decision "It's the dawn of a new era in transmission line planning in this state. In urban and suburban areas, we have to look anew at how we site transmission lines, and carefully weigh their role in fulfilling the state's energy goals against their impact on community values. 19 6 - -ter --* �I(-_W r� - - & at• ' �.�r..w. W V Fl7Wrq OM PL r 2LC kY L4�it t� � � "•�• ..r °Aa',!�&r� af•.`ti,'Oww!. kit, a' w [#1 = 7Y ',}[ l V a .`w 4r ' aaoowi�v *• d LNG si;e Ame" * ¢ a 46 Y IJ02 16 =xr ceWC rs. .... 25BIV M1 C M -L 1 Sal[ ti RIM PIE" amupmo _ _ 'F •'.' :[r' k'- q �srystall¢er Panes ' �r k7. _ * nEW& • ip Project Overview Map (South) Dotted lines all underground power /gas lines Solid purple is the 230 W line— the only above ground Rate Impact of Undergrounding 230kV • Assumed $4 million • Average rate increase o + 0.000250 /kWh o +0.0015% 0 1.50 per year for the typical residential customer • For comparison: o1/200th the cost of running a night light o Less than the electricity cost to watch 1 football game on TV How Transmission Costs are Spread • Paid for by all CAISO customers (SIDG&E, SCE and PG &E) if: D Voltage is above 200 kV D Deemed needed by the CAISO D 20A funds not applicable • Includes all mitigation costs, including undergrounding — Chino Hills: Added $224 million to underground 3.5 miles — Those costs are spread across all three California utilities (including SDG &E) Glenn Reddick, P.E. BS Electrical Engineering Registered Professional Engineer California and 4 other states EXPERTISE • Substation Design — 230kV and below • Overhead Line Design — 230kV and below • Underground Line Design — 69kV and below • Utility Operations — 230kV and below — Sacramento Municipal Utility District — Hercules Municipal Utility Overhead vs Underground Not Present with Underground low profile Support 68 Ft height becomes UG -- ---------------------------- - - - - -tc �+ - - -� Riser r rl I�� i ICI I. �� II LI jr n II LI or 11 II - II §I p� i1 I I •• - Il IL ff rl II III li A� II �I III 19 I - F�� A Tj is M T ?'P f: , R O Low Profile vs Standard How Tall? • - Scale in Feet 100 60 —20 — 0 $OUNCE.$W &EPEAMO FIGURE B-6 l` Bay Boulevard Substation Profile View 6852 -01 South Bay Substation Relocation Project Draft EIR Before and After IM l �f. Visual Simulation Visual Simulation NO W, THEREFORE, the Parnes a,-ree as f011ows: 2004 MOU AGREEMENT "I-E.RMS 1.2 Bayfront Undergrounding: A key objective of the City is to remove all above ground electric lines and associated hardware as described herein and to underground such lines and associated hardware in the area identified in paragraph I.3 as the Bayfront. The City and SDG&1 have agreed to work in concert to achieve that result as set forth in this MOU. 1.3 Bayfront "Transmission Dines; SDG&E. has filed an application with the CPUC for a Certificate of Public Convenience and Necessity ( "CPCN ") for construction of a new 230kV line and associated hardware that runs from the proposed Otay Mesa power plant through Chula Vista including, in part, the Bayfront (the "Project ") ... . .. SDG &E and City will cooperatively work to achieve the objective of undergrounding the 230 kV line. . . . . . . In the event at some time during the terin of this MOU additional tram rnission or distribution lines are needed along the Bayfront, SDG &.E agrees It will fill; for such Ittles to he Linder. grounded as a preferred alternative and work cooperatively with the City to maintain this area as an underground district, 1.7 ��i'itcJtva�•c!: M �upon reloe(M1011 of the Switchyard and pursuzint to sections 1.4A and 1.4(-, the 138 k%` circuit locatcd from Tol,�rcr 2.8176 3 to approximately TOWCr 188701 will be undergrounded one tle City ihx� tNe 20A funds ),- nih�,!r alternative funding the City may have (with Tmver 188-700 �above� i-,:-cA I I'll I" i-cinoval of said 138 k-N% 'S"upporting 71�)! cione and paid for hy SM'XI", (()'ISkten[ With AS T:-1t' Citywill t1i7loly Fill lild SD, &E 'Fl-nils 0 (i�,'TPI;I)Ljmli lhi construction, cojisisteni 1,vltli all 1:.m.,s -Ind regultauons applicable to SD(j&,L C-aid ttie City, . i• '1 ;•`;' +.r. I `.5: 1'lli .�..r' ',i r1:��:.1,.'•r .:.s .i�t.� •r: :. 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