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Home My WebLink About2013/10/01 Item 11 Presentation - SDGESD Ar �E A Sempra Energy umity South Bay Substation Relocation Chula Vista Public Discussion San Diego Gas &Electric° (SDG&EO) October 1, 2013 Z E Underground Facilities Constructed in A W Sempra Energy utuity .. Chula Vista within the Last Ten Years SDG &E has collaborated with the City of Chula Vista and has spent about $90 Million to underground transmission and distribution facilities in the City of Chula Vista: • $40 M of distribution facilities undergrounded using 20A funds throughout the City of Chula Vista • $20 M of 138kV transmission undergrounded using 20A funds on the Bayfront • $9 M of 138kV bridge structures on the Bayfront removed • $21 M of 230kV facilities installed underground on the Bayfront V M �, � a� � , ,�;, >, _, .�_�� r.�� "" �: �! ``r:. -��ri �� N � r� , � 'w s . .`" � •5� r.. i dp1 �1 y: —�__,z El • Undergrounded 138kV & 230kV Lines • Removed 18 Bridge Towers • Removed 5 Lattice Towers Existing Southbay Substation South Bay Substation Relocation Existing Conditions: Overhead 138kV & 230kV Facilities 8' 8 Z119482 6 Z119446 Sweetwater River Bay Blvd 2188701 I Z188700 1 -5 Notes: 1. For illustrative purposes only 2. Only overhead 138/230kV facilities owned and operated by SDG &E are shown (69kV not shown on this sketch) 3. This sketch and associated simulation do not reflect the Ultimate transmission line configuration 4. Not to scale Steel Pole Steel Cable Pole Wood Cable Pole Bridge Steel Tower Lattice Steel Tower Overhead 138kV Line Overhead 230kV Line Notes: 1. For illustrative purposes only 2. Only overhead 138/230kV facilities owned and operated by SDG &E are shown (69kV not shown on this sketch) 3. This sketch and associated simulation do not reflect the Ultimate transmission line configuration 4. Not to scale ZFE A �)Sernpra Energy umity Key Results of Collaboration with Port and City of Chula Vista • The Proposed Project is the result of about ten years of cooperation between SDG &E, the Port and the City of Chula Vista • Significant amount of joint effort went into the system improvements to accommodate the South Bay Power plant shutdown • The City of Chula Vista identified the proposed project site, which was later approved by the Port and State Lands Commission and will advance the common goal of Bayfront redevelopment and revitalization • The City, Port and SDG &E jointly advocated before the CPUC to relocate the substation to facilitate the Chula Vista Bayfront Master Plan • The CPUC's Proposed Decision (if approved) would relocate the substation and include substantial related undergrounding X Z E Underground Facilities Included in the Proposed osed Pro'ect A � Sempra Energy umity The CPUC's Proposed Decision to relocate the substation, if approved, includes approximately $23M to install facilities underground and remove existing overhead structures • 4,100 feet of 69kV underground • 3,800 feet of 138kV underground • 1,000 feet of 230kV underground 7 SDGE Z Relocation Milestones A �)Sernpra Energy umity 2004 SDG &E enters into MOU with Chula Vista 2009 City of Chula Vista identifies the proposed substation site Jan /Feb 2010 Port and State Lands Commission approve land exchange agreement Feb 2010 CAISO Board approves substation relocation at 230/69kV Jun 2010 SDG &E files Permit to Construct (PTC) with CPUC Dec 2010 CPUC conducts public meeting in Chula Vista on Mitigated Negative Declaration Scope Aug 2011 CPUC conducts public meeting in Chula Vista on EIR Scope Jun 2012 CPUC issues Draft EIR; identifies existing site as environmentally superior alternative Jul 2012 CPUC conducts public meeting in Chula Vista to hear comments on Draft EIR Nov 2012 CPUC technical workshop and evidentiary hearing Jan 2013 CPUC issues Final Energy Division Workshop Report Apr 2013 CPUC issues Final EIR, ranks proposed relocation and existing site alternative as equal Aug 2013 CPUC issues Proposed Decision granting SDG &E a Permit to Construct (PTC) the Proposed South Bay Substation Relocation Project Z E South Bay Substation Relocation A Community Benefits : Sempra Energy um�ty � Y The Proposed Decision would benefits: provide significant community • Relocates substation outside of Chula Vista Bayfront Master Plan, which will allow for the development of a new park and visitor - serving uses • Includes approximately $23M to install facilities underground and remove existing overhead structures • Meets current and future transmission and distribution needs for the South Bay area, including electric distribution needed to power Bayfront redevelopment • Replaces aging infrastructure and improves electric system reliability E Z E South Bay Substation Relocation Project � Reliability Benefits A � ) Sempra Energy umity Y The proposed project will replace a 1950's era substation with a state of the art substation design featuring the latest electric grid technologies: • Install modern telecommunications, physical and cyber security, control and protection systems • Install steel structures that are built to current seismic standards • Install Condition Based Monitoring (CBM) on new equipment that monitors asset health for more efficient maintenance • Replace aging infrastructure with a comprehensive state of the art facility • Allow for integration of emerging Smart Grid technologies 10 Z E South Bay Substation Relocation � Visual Benefits A W , Sempra Energy umity • Demolition of the existing 138/69 kV South Bay Substation within the Bayfront Master Plan Area • Relocation of six 69 kV transmission lines to the new substation — Relocation of approximately 7,500 feet of overhead — Construction of approximately 4,100 feet of underground — Reduction of over 2,500 feet of overhead — Net reduction of 6 poles - A 138 kV extension to bypass the Existing Substation — Construction of approximately 3,800 feet of underground — One new cable pole in place of existing steel lattice structure — Reduction of over 3,200 feet of overhead — Net reduction of 5 structures • Construction of a 230 kV loop -in — Approximately 1,000 feet of underground interconnection — Approximately 300 feet of overhead interconnection of the existing 230 W line — Reduction of approximately 500 feet overhead — Net -zero change in number of poles • Removal 1 cable pole (165' tall); install 1 new pole (121' tall) 11 SDGAff South Bay Substation Relocation Project �E . ASempra Energy utucy' Substation Comparison Voltage Rating Tallest Structure Height Existing 138/69 kV 73.25' tall Proposed 230/69/12 kV 65' tall Land Area 17.69 Acres 12.42 Acres 12 Notes: 1. For illustrative purposes only 2. Does not include all SDG &E properties and easements 13 Notes: 1. For illustrative purposes only 2. Only overhead 138/230kV facilities owned and operated by SDG &E are shown (69kV not shown on this sketch) 3. This sketch and associated simulation do not reflect the Ultimate transmission line configuration 4. Not to scale Existing Southbay Substation (To Be Removed) South Bay Substation Relocation Proposed Project: Substation at Bay Blvd 8' 8 Sweetwater River Bay Blvd Ne« New New Bay Blvd 0 Substation 2188701 1 2188700 2119446 0 Proposed Project Scope (138kV / 230kV) 1 -5 • Underground TL13815 Extension • Remove: 5 Lattice Steel Towers / 1 Wood Cable Pole • Remove: 230kV Cable Pole • Underground TL23042 Extension • Relocation of switchyard • Install: 1 - 138kV Steel Cable Pole / 1 - 230kV Steel Pole Steel Pole Q Steel Cable Pole g Wood Cable Pole Bridge Steel Tower Lattice Steel Tower Overhead 138kV Line Overhead 230kV Line ZFE Sempra Energy utoity"' Bayfront Enhancement Alternative Proposed by SDG &E 15 Notes: 1. For illustrative purposes only 2. Only overhead 138/230kV facilities owned and operated by SDG &E are shown (69kV not shown on this sketch) 3. This sketch and associated simulation do not reflect the Ultimate transmission line configuration 4. Not to scale Existing Southbay Substation (To Be Removed) South Bay Substation Relocation Proposed Project: Substation at Bay Blvd With Bayfront Enhancement Fund — 138kV Tower Removed 8' 8 Sweetwater River Bay Blvd 1 -5 Approx. 1,000, Nei New Bay Blvd 0 Substation Z188700 2119446 0 Bayfront Enhancement - 138kV Scope • Underground TL13815 Extension (Additional) • Remove: 2 Lattice Steel Towers • Install: 1 - 138kV Steel Cable Pole Steel Pole Q Steel Cable Pole g Wood Cable Pole Bridge Steel Tower Lattice Steel Tower Overhead 138kV Line Overhead 230kV Line Simulation Area View Direction 17 Z E Bayfront Enhancement Alternative � A �)Sernpra Energy umity Background May 2011: SDG &E proposes the Bayfront Enhancement Alternative to address potential issues that could arise subsequently during the Coastal Commission review process August 2011: SDG &E submits written comments on Notice of Preparation of EIR formally requesting that CPUC analyze the Bayfront Enhancement Alternative in Draft EIR June 2012: CPUC releases Draft EIR, but declines to analyze Bayfront Enhancement Alternative due to lack of detail about the proposed alternative August 2012: SDG &E submits written comments on Draft EIR, revises Bayfront Enhancement to specify additional undergrounding and other enhancements, and requests that CPUC conclude that it is the environmentally superior alternative April 2013: CPUC releases Final EIR, but declines again to analyze Bayfront Enhancement because visual impacts are less than significant, therefore no further mitigation is required August 2013: Proposed Decision concludes that additional "enhancements" 18 requested by City and Inland Industries are not necessary ZFE Sempra Energy utoity"' Additional 300 feet of 230kV Undergrounding Requested by Inland Industries 19 Notes: 1. For illustrative purposes only 2. Only overhead 138/230kV facilities owned and operated by SDG &E are shown (69kV not shown on this sketch) 3. This sketch and associated simulation do not reflect the Ultimate transmission line configuration 4. Not to scale Existing Southbay Substation (To Be Removed) South Bay Substation Relocation Proposed Project: Substation at Bay Blvd 8' 8 Sweetwater River Bay Blvd Ne« New New Bay Blvd 0 Substation 2188701 1 2188700 2119446 0 Proposed Project Scope (138kV / 230kV) 1 -5 • Underground TL13815 Extension • Remove: 5 Lattice Steel Towers / 1 Wood Cable Pole • Remove: 230kV Cable Pole • Underground TL23042 Extension • Relocation of switchyard • Install: 1 - 138kV Steel Cable Pole / 1 - 230kV Steel Pole Steel Pole Q Steel Cable Pole g Wood Cable Pole Bridge Steel Tower Lattice Steel Tower Overhead 138kV Line Overhead 230kV Line Z E Additional 230kV Undergrounding Requested 1� CPUC Consideration A (4:Sempra Energy uvity The CPUC considered and rejected Inland Industries' proposed alternative • Inland Industries included comments regarding 230kV undergrounding with their comments on the Draft EIR • CPUC considered testimony by SDG &E and Inland Industries • CPUC considered responses to data requests by SDG &E and Inland Industries • CPUC hired an independent consultant • CPUC ultimately did not carry the undergrounding alternative forward 21 Z E Additional 230kV Undergrounding Requested 1� Technical Details A (4:Sempra Energy uvity The 230kV lines to the East of Bay Boulevard Substation are a vital source of bulk power for the region Feasibility issues associated with the additional 300 feet of 230kV undergrounding include: • Undergrounding the 230kV source to the East would require 3- cables per phase to not de -rate the capacity of this line • New cable poles will create unnecessary visual impacts • Construction of underground and overhead facilities will result in significant unnecessary cost 22 � � / _ � � �Y `� i* �. _ _ 6 '\ �� . _ . _ . ,.,� ,�; a . ,._ I u }} ;,;° w� k�•;��P� °i, �ti ��• ��ar��,� �. '� �� , . �., �; ... .. � .. _...�._.,.� ...�._ _ w ..�� _ _..,... ,.. ;> <,_ -__ Z E South Bay Substation Relocation A �)Sernpra Energy utuity . Proposed Decision Benefits • The Proposed Decision facilitates the City of Chula Vista's Bayfront Master Plan by relocating the South Bay Substation out of the Master Plan area • The Proposed Decision enhances the Bayfront by minimizing overhead structures and undergrounding existing lines at a cost of $23M as part of the substation relocation • The Proposed Decision is a result of collaboration between the City, Port and SDG &E, and advances community values as expressed by the City and the Port • The CPUC considered the input and evidence presented by interested parties and stakeholders (The Proposed Decision states "Energy Division received written comments from more than 235 individuals and organizations during the comment period.") • The Proposed Decision will provide the electric infrastructure needed to meet current and future projected energy needs for the South Bay 24 region, and will benefit all of Chula Vista ,� f§ \: \�� « °&r » °y. � � >� .. � . //\ . + JAL-- -0 4 9", �= r rzi NOW RR POPP-,Wl" , __ 1 tit® �� `�j� �_.. -. a1F�. �r"""~ ..-- _ � - �'�1111R ��.. ��! m� __. ., - . � _. - � ____ � y -.. a.�_ .. ` � -. _