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Home My WebLink About03.c. Receive update on Central San's electric vehicle charging stations (EVCS), District Project (DP) 8252 Page 1 of 3 Item 3.c. CENTRAL SAN December 16, 2019 TO: REAL ESTATE, ENVIRONMENTAL AND PLANNING COMMITTEE FROM: MELODY LABELLA, RESOURCE RECOVERY PROGRAM MANAGER REVIEWED BY: JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL SERVICES ROGER S. BAILEY, GENERAL MANAGER SUBJECT: RECEIVE UPDATE ON CENTRAL SAN'S ELECTRIC VEHICLE CHARGING STATIONS (EVCS), DISTRICT PROJECT (DP) 8252 At the June 20, 2019 Board meeting, the Board authorized the General Manager to submit a Bay Area Air Quality Management District (Air District) grant application for EVCS. This is an update on the project since that time: • Staff completed and submitted the grant application to the Air District prior to their deadline of June 30, 2019. • Staff created a contingency capital project (D P 8252) and issued a task order to TJ C and Associates, Inc., one of Central San's as-needed electrical consultants, to complete a 30% pre- design and cost estimate for installation of EVCS in the Plant Operations Department's parking lot. Their report is currently being finalized and includes the attached Table 1 on a few different EVCS installation options. • Central San will be eligible to apply for grant funds from the Air District in Spring 2020, when the Air District's grant program reopens. This program provides $4,000 in grant funding per dual-port Level 2 EVCS and $18,000 in grant funding per Level 3 EVCS. • Staff is currently working on an implementation and funding strategy to bring to the Board for consideration. Staff looks forward to providing this update and receiving your input at the December 16, 2019 Real Estate, Planning & Committee meeting. Strategic Plan Tie-In GOAL FOUR: Develop and retain a highly trained and innovative workforce Strategy 2- Enhance relationships with employees and bargaining units GOAL SIX: Embrace Technology, Innovation and Environmental Sustainability Strategy 3- Encourage the review and testing of technology to optimize and modernize business operations December 16, 2019 REEP Committee Meeting Agenda Packet- Page 13 of 18 Page 2 of 3 ATTACHMENTS: 1. EVCS Comparison of Alternatives Table December 16, 2019 REEP Committee Meeting Agenda Packet- Page 14 of 18 Page 3 of 3 1A Tic Table 1 - Electric Vehicle Charging Stations Comparison of Alternatives ALTERNATIVE OPINION OF PROBABLE PROS CONS APPLICATION CONSIDERATIONS CONSTRUCTION COST 1,2 1 - All Level 2 Charging Level 2 Chargers:3 $ 40,000 • Level 2 EVCSs are compatible • Future expansion is limited to • Charge Time/Miles of rph:5 10-30 miles rph; slowest chargers Stations Duct bank/Wiring: $ 78,000 with most EVs in North Level 2 chargers; EV auto (-2-4 hrs. for 80% charge completion) Other Electrical America industry will move toward . Safety: Lower voltage (120 V) and lower current present in the • Initial: Three Level 2 (Transformer, 1201208 V Pane/board, MCC vehicles that can use DC fast chargers Mods) : Level 2 EVCSs are the most parking lot; possibly lower electrical hazard than with 480-V Civil/Structural Infrastructure g ) $ 52,000 commonly used for EV models charging (Level 3) chargers in the parking lot although arc flash could be higher sold being g Bigg • Provisions for up to six (Equipment Pad, Charging Station Pads, per electrical equipment • Vehicular/Plug Compatibility: Level 2 chargers are compatible Restriping Parkin Lot 2 footprint (transformer future Level 2 chargers P� 9 9 )� $ 6,000 Smallest electrical load on the disconnect, transformer, with most EVs in North America; Level 2 charger comes with 31772 (up to nine chargers Subtotal: $ 196,000 MCC; smallest feeder size charger panelboard) and more plug, which is the most common plug, and is compatible with all Total) Prorates, Taxes, & 33% Contingency • Lowest cost weight; requires a new EVs in North America $ 143,000 concrete slab to install • Dual Port Charging: Level 2 charger can charge two vehicles Conceptual Total Cost: transformer simultaneously at 6.6 kW, high-power output $ 339,000 2 - All Level 3 Charging Level 3 Chargers:' $ 139,000 • Future expansion allows option • Only compatible vehicles can • Charge Time/Miles of rph:s Stations Duct bank/Wiring: $ 125,000 for Level 2 chargers if desired use Level 3 chargers; Level 2 100-200 rph; Fastest chargers (-15-45 mins for 80% charge Other Electrical • Requires least amount of space EVs cannot charge with Level completion for most vehicles) • Initial: Three Level 3 (480 V DSB, MCC Mods): $ 17,000 3 charging stations chargers Civil/Structural Infrastructure (Equipment for electrical equipment (only g one enclosure for the 600 A Level 3 compatible EVs are Safety: Higher voltage (480 V) and more current present in the Pad, Charging Station Pads, Restriping parking lot; this presents more of an electrical hazard in the Provisions for up to Parking Lot): $ 26,000 DSB) least common on the road presently parking lot than Level 2 chargers at 120 V three future Level 3 Subtotal: $ 307,000 e Vehicular/Plug Compatibility: Level 3 chargers are only chargers (up to six Prorates, Taxes, & 33% Contingency:4 • Largest electrical load on the compatible with vehicles that support DC fast charging; Level 3 Total chargers $ 224,000 MCC; adds an additional 600 A g ) of electrical loading on MCC charger supports up to two connector types per station (CHAdeMO, Conceptual Total Cost: CCS1 (SAE 31772 Combo) and CCS2 (IEC 61851-23) plugs) $ 531,000 Dual Port Charging:• Highest cost in Unavailable 3 - Hybrid Level 2 and 3 Level 2 & 3 Chargers:' $ 73,000 • Supports both Level 2 and • Biggest equipment footprint • Charge Time/Miles of rph:s Charging Stations Duct bank/Wiring: $ 89,000 Level 3 EVs (DSB, transformer, charger Level 2: 10-30 miles rph; slowest chargers (-2-4 hrs. for 80% Other Electrical: panelboard) and most weight; • One Level 3 charger (Transformer, DSB, 1201208 V Pane/board, Future expansion capability for requires a new concrete slab charge completion) MCC Mods either Level 2 or Level 3 $ 58,000 providing flexibility for � to install transformer Level 3: 100-200 rph; Fastest chargers (-15-45 mins for 80% • Two Level 2 chargers Civil/Structural Infrastructure charge completion for most vehicles) (Equipment Pad, Charging Station Pads, meeting future EV trends • Provisions for six future Restriping Parking Lot): $ 31,000 Safety: Higher voltage (480 V) and more current present in the Level 2 chargers and/or Subtotal: $ 251,000 parking lot; this presents more of an electrical hazard in the parking lot than only Level 2 chargers at 120 V Level 3 charger (9 Prorates, Taxes, & 33% Contingency:4 chargers total) $ 185,000 • Vehicular/Plug Compatibility: Charger availability for all vehicles Conceptual Total Cost: • Dual Port Charging: Level 2 charger can charge two vehicles $ 436,000 simultaneously at 6.6-kW, high-power output NOTES 1, EXTENSIVE REVISIONS TO PARKING LOT ARE ASSUMED NOT REQUIRED 2. BASIC MANUFACTURER WARRANTY AND MAINTENANCE INCLUDED IN THE COST ESTIMATES. EXTENSION OF THESE WARRANTY AND MAINTENANCE PROGRAM RECOMMENDED 3. POSSIBLE BAAQMD REBATES ARE NOT INCLUDED 4, 33% CONTINGENCY TO SUB-TOTAL OF LINE ITEMS; CONTINGENCY INCLUDES POTENTIAL HAZARDOUS MATERIAL MITIGATION,ADDITIONAL INFRASTRUCTURE, ESCALATION, BIDDING CLIMATE, DISTRICT INTERNAL CM COSTS,AND OTHER UNDEFINED FACTORS 5. CHARGING AND RANGE DATA DERIVED FROM CHARGEPOINT PRODUCT DATA —ASSUMED TYPICAL FOR EVCS MANUFACTURERS Https://tjcaa.sharepoint.com/sites/ProjectFiles/Shared Documents/TJCAA-2018 Projects/118063-CCCSD,Prof EIC Eng As-Needed Services/118063A,CCCSD Charging Stn/6.0/118063-CCCSD Charging Station TM.Fnl.docx 10/22/2019 Dg�"er 16, 2019 REEP Committee Meeting Agenda Packet- Page 15 of 18