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Home My WebLink AboutC23290C1 CO1 N.Carports Photovoltaic SystmCITY OF PALM DESERT OFFICE OF ENERGY MANAGEMENT STAFF REPORT TO: Honorable Mayor and City Council Members SUBJECT: CHANGE ORDER #1 CIVIC CENTER SOLAR PHOTOVOLTAIC SYSTEM SUBMITTED BY: Pat Conlon, Director of Office of Energy Management DATE: June 28, 2007 CONTRACT No. C23290-C1 CONTRACTOR: Carlson Solar Electric Systems 43430 E. Highway 74, Suite F PMB 211 Hemet, CA 92544 ATTACHMENT: Change Order #1 Staff Recommendation: By Minute Motion 1) Approve Change Order #1 on the above contract for an amount Not To Exceed $96,254.10 for the installation of a new rack system and 192 additional solar panels, supplied by the City, on the Civic Center main parking shade cover. 2) Authorize the use of $46,415.77 project contingency funds for the above contract. 3) Authorize the transfer of $49,838.33 from account No. 400-4511-4423-911 to the base contract for this expenditure. Discussion: The City currently has 192 solar panels in storage left over from the 2001 purchase of 600 solar panels as part of the Palm Desert Solar Assistance Program. The Siemens SM-50 solar panels we have in storage are the same solar panels we installed on the Civic Center main parking shade cover in 2003, so there is no need to change or modify Change Order #1 Civic Center Solar Photovoltaic System June 28, 2007 Page 2 of 2 the existing photovoltaic system's wiring or equipment to accommodate the additional panels. What we would like to take advantage of when we do this work is to revise the existing rack system when the new rack system is installed. The rack system is the frame which supports the solar panels. We would like to remove the existing rack system and incorporate the existing solar panels into the new rack system, which holds the added solar panels. We want to locate the new rack system a further distance from the existing date palm trees so we can get more solar exposure on both the existing photovoltaic solar panels and the 192 new panels that we will be adding to the system. By relocating the rack system away from the shade of the date palms coupled with adding the additional panels to the system, there will be a 130% increase to the output of the system. As you are aware, the shading of the date palms on the existing system reduces the potential output by 50%. The new calculated annual output of the photovoltaic system with the revised racks and the additional 192 panels is approximately 29,862 kilowatt hours, which at our existing time -of -use Southern California Edison rates, will result in an annual savings of $5,249.16. The 192 added solar panels are eligible for a Southern California Edison rebate of approximately $29,250.00. No additional appropriation is required for this Change Order. Funds are available in the project contingency and the project account no. 400-4511-4423-911. Any questions, please feel free to contact me. Submitted by: Approved by: Pat onlon Carlos Orte(g Director, Office of Energy Management City Manager Reviewed by: Paul Gibson Finance Director dITY COUNCIL,ACTION: APPROVED ✓ DENIED RECEIVED OTHER t€ETIN DATE /n '?ZSS U / AYES: i/'(Ibtizne"fr/� ji(1yd one' Kaki NOES: ABSENT: ABSTAIN: VERIFIED BY: / //n )riginal on File `i/ith City Clerk's Offic G'\Energy Management\Pat Conlon\Staff Reports\CO#1 Civic Center PV System June 28 2007.doc CITY OF PALM DESERT CONSTRUCTION CHANGE ORDER Contract Purpose Consultant's Name Address: Contract # / P.O. # 1 C23290C1 I 14017 Change Order No. I 1 Contingency: 1 YES I NO Account No. 1 400-4511-4423-911 Project No. Vendor No. 9976 You are hereby requested to comply with the following changes from the contract plans and specifications: DESCRIPTION OF CHANGES DECREASE (Supplemental Plans, Specifications, and Directives dated Attached) In Contract Price Install 192 Siemens SM-50 Photovoltaic panels, supplied by City, to Civic Center main parking shade cover Move and replace racking for existing photovoltaic panels on Civic Center main parking shade cover JUSTIFICATION: TOTAL BUDGET FOR PROJECT: Less: Expend. & Encumb. To Date: Less: This Change Order Amount: BALANCE OF BUDGET REMAINING FOR PROJECT: TOTALS: NET CHANGE IN CONTRACT PRICE: + 562,993.00 - 512,879.38 - 96,254.10 (46,140.48) CONTINGENCY: Amount Approved by Council: Less: Prior Change Order(s): Less: This Change Order: Balance Remaining of Contingency: INCREASE In Contract Price 96,254.10 96,254.10 96,254.10 The amount of the Contract will be (Decreased) Increased by the Sum of: Dollars ($ 96,254.10 ). W \City Templates\City Word Templates\Forms\Change Orders and Amendment Forms\City Change Order doc See reverse ... Contract C23290C1 Change Order No. 1 Continued from front This Change Order covers changes to the subject contract as described herein. The Contractor shall construct, furnish equipment and materials, and perform all work as necessary or required to complete the Change Order items for a lump sum price agreed upon between the Contractor and the City of Palm Desert, otherwise referred to as Owner. Contract Time Extension Days. Revised Contract Total $560,411.78 The undersigned Contractor approves the foregoing Change Order # 1 as to the changes, if any, in the contract price specified for each item including any and all supervision costs and other miscellaneous costs relating to the change in work, and as to the extension of time allowed, if any, for completion of the entire work on account of said Change Order # 1 . The Contractor agrees to furnish all labor and materials and perform all other necessary work, inclusive of that directly or indirectly related to the approved time extension, required to complete the Change Order items. This document will become a supplement of the contract and all provisions will apply hereto. It is understood that the Change Order shall be effective when approved by the Owner. Execution of this Change Order by the Contractor constitutes a binding accord and satisfaction that fully satisfies, waives, and releases the Owner from all claims, demands, costs, and liabilities, in contract, law or equity, arising out of or related to the subject of the Change Order, whether known or unknown, including but not limited to direct and indirect costs and/or damages for delay, disruption, acceleration, loss of productivity, and stacking of trades, as well as any and all consequential damages. This document will become a supplement to the Contract and all provisions will apply hereto, all items included above must have required signatures as per the purchase resolution. 1. REQUESTED BY: DEPARTMENT HEAD 3. CERTIFIED FUNDS AVAILABLE: FINANCE DIRECTOR NOTE: No payments will be made prior to City Manager and Council approval 2. ACCEPTED BY: CONTRACTOR Date Accepted 4. APPROVED BY: RICHARD KELLY, MAYOR Date Approved CITY MANAGER Date Approved W \C,ty Templates\Crty Word Templates \ Forms \Change Orders and Amendment Forms\City Change Order doc See reverse ... r4. Carlson Solar Electric Systems 43430 E. State Hwy 74 #F PMB-221 Hemet, CA 92544 1-877-927-0782 Toll Free Bib To City of Palm Desert 2 73-510 Fred Waring Dnve Palm Desert, CA 92260 (760) 674-3428 Fax (760) 837-0287 Estimate Date Estimate # 6/11/2007 469 Quantity Description Rate 1 Removal of old racking, modules and conduit. 4,600.00 384 installation of 192 + previous 192 SMSO Solar Modules 125.00 384 Module Racking Utilizing anodized aluminum with stainless steel 75.00 hardware 1 Miscellaneous parts such as wire, me connectors, breakers, disconnects, 11,714.25 sub panels and ctc The understanding that the City of Palm Desert will provide any Structural engineering if needed and that performance or payment bonds are not required. This is a not to exceed estimate. Actual cost may be Tess. Total 4,600.00 48,000.00 28,800.00T 1 1,714.25T 0.00T Subtotal S93,114.25 Sales Tax (7.75%) 53,139.85 Total S96,254.10 z0021 21V10S NOS121V0 XVd 65:41 LOOz/81/90