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11-23-2010 CC Rpt A05 COUNCIL AGENDA STAFF REPORT CITY CLERK USE ONLY RECEIVED Meeting Date: November 23. 2010 S2010 NOV 15 AM 8: 08 4 Public Hearing: ❑ (� , Discussion Item: p CITY:; ,-n. C��/ OFFICE OF HIL CLERK IMORiciiia Consent Item: L�'( CHINO HILLS November 16, 2010 TO: HONORABLE MAYOR AND CITY COUNCIL MEMBERS FROM: CITY MANAGER SUBJECT: CHANGE ORDER NO. 1 TO AGREEMENT NO. A10-39 WITH SILVIA CONSTRUCTION, INC. FOR THE REHABILITATION OF PEYTON DRIVE - GRAND TO SR 71 PROJECT RECOMMENDATION: Approve Change Order No. 1 to Agreement No. A10-39 with Silvia Construction, Inc. in the amount of$161,850.61. BACKGROUND/ANALYSIS: On August 24, 2010, the City Council awarded a contract to Silvia Construction, Inc. for the Rehabilitation of Peyton Drive from Grand Avenue to SR 71 project. The scope of work for this project includes selected areas of pavement rehabilitation followed by a complete 1-1/2" asphalt overlay. Work commenced on October 6, 2010 and, as areas of rehabilitation were marked out, it was determined that the estimate for bid purposes of 80,000 s.f. was insufficient and an additional 10,954 s.f. was needed to ensure that the project was completed to the appropriate level. 1. Addition of 10,954 s.f. of 2" grind and overlay @ contract bid value of $1.18 per s.f. Additional cost: $12,925.72 2. Adjustment for actual vs. bid quantity of 6-ft. wide, 0-0.12' tapered edge grinding. Deduct of 1,672 I.f. @ $ 0.91: Credit of: ($1,521.52' 3. Adjustment for actual vs. bid quantity of 6-ft. wide, 0-0.0.8' tapered edge grinding. Addition of 1,802 I.f. @ $ 0.57: Additional cost: $1,027.14 4. Upon completion of all pavement rehabilitation, the contractor informed staff that his estimate for the asphalt overlay was substantially different from the bid quantity. Upon further review, it was determined that the original bid quantity of 4,600 tons was in error and an additional 2,000 tons at a contract unit cost of $74.75 is necessary to complete the project. Additional cost: $149,419.27 / d� AGENDA DATE: November 23, 2010 Page 2 SUBJECT: CHANGE ORDER NO. 1 TO AGREEMENT NO. A10-39 WITH SILVIA CONSTRUCTION, INC. FOR THE REHABILITATION OF PEYTON DRIVE - GRAND TO SR 71 PROJECT Although these changes reflect a significant increase in the original contract value, the budget for this project is $860,000, therefore, no additional appropriation is necessary to facilitate this increase in cost. Staff is asking for approval of Change Order No. 1 to Agreement No. A10-39 with Silvia Construction, Inc. in the amount of $161,850.61. The contract amount is summarized below: Original Contract $ 539,279.50 Change Order No. 1 $ 161.850.61 Total Amended Contract Amount $ 701,130.11 REVIEW BY OTHERS: This item has been reviewed by the Finance Director and the Public Works Director. FISCAL IMPACT: This project is included in the FY 2010/11 Capital Improvement Program budget. Respectfully submitted, Recommended by: Michael S. KleSerisigManager Steven C. Nix', Cioty Engineer SN/AD/ps Attachment CITY OF CHINO HILLS CHANGE ORDER NO. 1 November 23, 2010 Project No. S10009 Contract No. A10-39 Project: Rehabilitation of Peyton Drive P.O. No. 110403 from Grand Ave. to SR 71 Account No. 399-7100-888-8110 Contractor: Silvia Construction, Inc. Distribution: 9007 Center Avenue Original to City Clerk Rancho Cucamonga, CA 91730 Contractor Purchasing Department DESCRIPTION: Current Change Order 30.0% Item No. Description Unit Change Unit Price 3 Selective 2-in grind & overlay SF 10,954 $ 1.18 $ 12,925.72 4 6-ft. tapered grind (0-0.12-ft) LF (1,672) $ 0.91 $ (1,521.52) 5 6-ft. tapered grind (0-0.08-ft) LF 1,802 $ 0.57 $ 1,027.14 12A 0.12-ft ARHM overlay TN 1,998.92 $ 74.75 $ 149,419.27 Total Cost $ 161,850.61 Contract Time Adjustment, Add - No -Working Days. ORIGINAL CONTRACT AMOUNT $ 539,279.50 CITY OF CHINO HILLS Authorized by the City Council this Change Orders to Date: 0 the day of , 2010. Add $ - Deduct $ - $ W. C. "BILL" KRUGER, MAYOR Change Orders to Date 0.0% Adjusted Contract Amount $ 539,279.50 ATTEST: Change Order No. Add $ 163,372.13 MARY M. McDUFFEE, CITY CLERK Deduct $ (1,521.52) Net Change Order 30.0% $ 161,850.61 APPROVED BY: Total Change Orders 30.0% STEVEN C. NIX, CITY ENGINEER AMENDED CONTRACT AMOUNT $ 701,130.11 ACCEPTED BY: SILVIA CONSTRUCTION, INC.