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HomeMy WebLinkAbout18- Public Works CITY OF SAN BERNARDINO REQUEST FOR COUNCIL ACTION File No. 3 . 14-23 Approval of Contract Change Order From: ROGER G. HARDGRAVE Subject: No. 9 - Phase 1 of Northwest In- terceptor Sewer & Storn Drain in Dept: Public Works "I" St. , from Mill St. to Santa Fe Yard, per Plan No. 9187 -- Date: 8-08-96 - UTAH PACIFIC CONSTRUCTION Synopsis of Previous Council action: June, 1994 - Allocation of $1 ,563 , 400 in 1994/95 Sewer Line Construction Fund budget approved under Acct. 245-365-- 57703 . 02-20-95 -- "Undesignated Fund Balance" to 248-368-5504-1526 for Storm Drain in "I" Street approved. 02-20-95 -- Plans approved and authorization granted to advertise for bids . 06-26-95 -- Resolution No. 95-212 adopted awarding a contract for Phase II , and approving Change Order No. One to in- corporate the section of Phase I through Santa Fe ' s "A" Yard. 07-10-95 -- Bids received on 4-4-95 rejected, and authorization granted to re-advertise for bids . (Cont. on 2nd page) Recommended motion: That Change Order No. 9 to the contract with Utah Pacific, Construc- tion, for construction of the storm drain and Phase I of the Northwest Intercepting Sewer in "I" St. , from Mill St. to the Santa Fe Yard, in accordance with Plans No. ' s 9169/9169-A, be approved; to compensate Contractor for the additional work performed in the removal of 23 , 809 S.F. of concrete pavement, not shown on the plans . and specifications , and removal_ and replacement of unsuitable soil encountered at inter- section of 3rd and "I" Sts. , at an increase in the contract price of $23 , 155 . 44 ; from $1 , 028 , 477 . 35 to $1 , 051 , 632 . 79 . cc: Shauna Clark Signature Contact person: Roger G. Hardgrave Phone: 5025 Staff Report & Supporting data attached: CCO #9 Ward: 1 & 3 FUNDING REQUIREMENTS: Amount: $23 , 155 - 44 (Sewer Line Construction Fund) Source: (Acct. No.) 245-365-5504-1526 Acct. Description) "I" Street SqKer & St ain 1 Finance: Council Notes: Agenda Item No. Ar PUBLIC WORKS File No. 3 . 14-23 SYNOPSIS OF PREVIOUS COUNCIL ACTION Continued: 07-10-95 - Resolution No. 95-237 adopted authorizing execution of Agreement with EDA and Santa Fe. 09-18-95 - Resolution No. 95-338 adopted awarding a contract to Utah Pacific Construction Co. for the second low bid price of $999 , 888 . 00 . 02-19-96 - Contract Change Order No. 1 approved for the concrete slurry under the Santa Fe RR tracks, at a total cost of $12 , 812 . 00 . 8-08-96 CITY OF SAN BERNARDINO - REQUEST FOR COUNCIL ACTION STAFF REPORT Page 1 of 2 During the excavation for the installation of the storm drain and sewer line in "I" Street, the Contractor encountered two conditions that were unknown at the time of bid; and, there- fore, were not identified in the plans and specifications. At the intersection of 3rd and "I" Streets , the soil was found to be extremely wet and of such poor quality that it could not be used as backfill material . Also, although three soil borings were taken on the project in three locations, a large section of concrete pavement was found underneath the existing asphalt concrete pavement, north of 2nd Street and south of Congress Street, that the borings did not reflect. Ordinarily, import material would be used if unsuitable soils are encountered, however, in this case, due to the water plume being present, the area needed to be treated and stabilized instead of backfill material being placed. The contractor was, therefore, directed to place asphalt grindings in the excavated area to a depth of approximately 4 - 5 feet. This treatment stabilized the intersection and will prevent any future problems with subsidence at that location. The work was performed on a time and material basis, at a total cost of $8 , 393 . 86 , in accordance with provisions in Section 3 of the Standard Specifications . Soil borings were taken at three locations within the project area, which are used to represent the soil conditions that exist on "I" Street and identify the thickness and nature of the existing pavement section. Although concrete was discovered north of Rialto Avenue, the soil borings did not identify any concrete in the area south of Rialto Avenue. It appears that the concrete was sporadically located on "I" Street and is not con- tinuous from Mill Street north to the 3rd Street off-ramp, therefore, the information that was provided did not represent the actual conditions that existed on "I" Street. Since this is the case, there was no provision for payment to the Contractor for any concrete removal south of Rialto Avenue. Therefore, the Contractor is entitled to additional compensation for the extra work involved in removing and disposing of the concrete pavement. An additional 23 , 809 square feet of concrete pavement was encountered and removed. The Contractor performed the extra work at the negotiated price of $0 . 62 per square foot, for a total additional cost of $14 , 761 . 58 . 8-08-96 75.0264 CITY OF SAN BERNARDINO - REQUEST FOR COUNCIL ACTION STAFF REPORT Page 2 of 2 The total estimated cost of Phase 1 of the intercepting sewer contained an amount of $100 , 395 . 50 for contingencies, which can be used to finance the cost for this extra work. All costs incurred for Change Order No. 9 will be charged to Account No. 245-365-5504-1526 . We recommend that Contract Change Order No. 9 be approved. 8-08-96 75-0264 C I T Y O F S A N B E R N A R D I N O DEPARTMENT OF PUBLIC WORKS ENGINEERING DIVISION Project: INSTALLATION OF PHASE 1 - NORTHWEST INTERCEPTOR SEWER IN "I" STREET BETWEEN MILL STREET AND THE SANTE FE YARDS. File No. : 3 . 14-235 Plan No. : 9169/9169A Date: 6/21/96 CONTRACT CHANGE ORDER NO. NINE TO: UTAH PACIFIC CONSTRUCTION 40940 Elenora Way Murrieta, CA 92562 Gentlemen: You are hereby compensated for performing the extra work as directed by the Resident Engineer, as follows: (1) Removal an additional 23 , 809 S.F. of unidentified concrete roadway that was not indicated on the plans, at the agreed price of $ . 62 per S.F. , at a total cost of $ 14 , 761. 58. (2) Removal and replacement of saturated soil within the intersection of 3rd and "I" Street, with asphalt grindings and base material, at the agreed price of $ 8 , 393 . 86. Total Extra Work Cost added to the Contract . . . . .$ 23,155.44 Previous Contract Price . . . . . . . . . . . . . . . . . . . . . . . . .$ 1,028,477 .35 Amended Cost Price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .$ 1,051,632 .79 Additional time to complete Contract due to Change Order -O-Working Days CONTRACTOR CITY OF SAN BERNARDINO Accepted Recommended By: By: ROGER G. HARDGRAVE DATE Director of Public Works/City Engr Title: Date: