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HomeMy WebLinkAbout11- Public Works CITY OF SAN BERN RDINO - REQUEST F'-)R COUNCIL ACTION File No. 1. 895 ROGER G. HARDGRAVE Approval of Contract Change Order From: Subject: No. ONE - Rehabilitation of Pave- Public Works/En ineerin ment on Arrowhead Avenue, from Dept: g g Mill St. to 3rd St. , per Plan 12--09--93 No. 8815 -- Date: MATICH CORPORATION Synopsis of Previous Council action: July, 1991 - Allocation of $500, 000 . 00 in 1991/92 Street Construc- tion Fund budget approved. 02-16-91 - Transfer of $500, 000 . 00 to Street Resurfacing - Various locations approved and $500 , 000 allocated from Subordinate Tax Allocation Bond Issue of 1991 . U2-17--92 - Resolution No. 92--55 adopted authorizing execution of an agreement with L.A. Wainscott for professional services . 02--15--93 - Resolution No. 93-43 adopted authorizing execution of Program Supplement No. 77 . 04-19-93 - Plans approved and authorization granted to advertise for bids . (Cont. on second page. ) Recommended motion: That Change Order No. ONE to the contract with Matich Corporation, for rehabilitation of Arrowhead Avenue , from Mill St. to 3rd St. be approved; to authorize the Contractor to place 3-inch rock additional asphalt grindings and geo-grid (as recommended by the Soils Engineer . to stabilize the subgrade between Cluster Ave. and Valley St. , at an estimated increase to the contract price of $15 , 500 . 00; from $626 , 413 . 00 to $641 . 913 . 00 . cc: Shauna Clark e 9 Signature Contact person: Gene R fl�tt Phone: 5125 Supporting data attached: Staff Report, CCO #1 Ward: 1 FUNDING REQUIREMENTS: Amount: $15, 500 . 00 (Street Construction Fund) Source: (Acct. No.) 242--362-57895 Acct. Description) Arrowhead Ave ue Reha_bi4itation, Mill St. to Third St. Finance: Council Notes: 75-0262 Ananria Itam Nn // PUBLIC WORKS File No. 1 . 895 SYNOPSIS OF PREVIOUS COUNCIL ACTION Continued: 08-02--93 -- Resolution No. 93-289 adopted awarding a contract to the Matich Corporation for the lowest responsible bid of $626 , 413 . 00 . 12-09--93 CITY OF SAN BERN,' IDINO - REQUEST F'R COUNCIL ACTION STAFF REPORT Removal of the existing pavement section revealed that the underlying soil was unsuitable to serve as subgrade for the new asphalt concrete to be placed. Normal practice would be to remove the unsuitable material and impact backfill soil that meets the specifications . However, this method was not practical , due to the shallowness of 'the utilities . Removal of the unsuitable material would have en- tailed relocating the sewer, water, geothermal , gas and telephone lines . The Soils Engineer was, therefore, requested to provide a recommendation to stabilize the unsuitable material in place. A recommendation was made that 3-inch rock be spread over the un- suitable material , and compacted with a steel-wheel vibratory roller. Asphalt chippings were then to be applied to a depth of 3 inches , and a geo-grid fabric placed over the chippings . The above items of work are necessary to prevent premature failure of the pavement section, with the attendant extra maintenance costs being incurred by the Cite. The Contractor has been directed to proceed with the extra work involved in stahilizincT the unsuitable material , in order to avoid extensive delay claims by the Contractor. This extra work is being done on a time and material basis , as provided in Section 4-103 , "changes" in the State of California Standard Specifications. The total estimated project cost included an amount of $106 , 587 for contingencies, which can be used to finance the additional cost for this change order. Federal-Aid Surface Transportation Funds (STP) have been approved to finance approximately 88% of the total project cost, including any required extra work. Caltrans oversees Federal-Aid funded projects to insure compliance with all applicable federal requirements . Their representative has reviewed this extra work, and determined that it is eligible for Federal-Aid funds. Since the Contractor is entitled, by terms of the contract, to be compensated for work required in the construction of the project, we recommend that Change Order No. 1 be approved. 12-09-93 75-0264 i 0 CITY OF SAN BERNARDINO Memorandum Date: 12/6/93 File No. 1. 385 To: Roy King, Local Assistance From: Mike Grubbs Contingency Balance CCO No. 1 Rev No. Sup No. (Inc This Change) $ 91,087 .00 $ 15,500.00 INCREASE THIS CHANGE ORDER PROVIDES for the additional work required in the placement of amendments in unsuitable soils and additional asphalt grindings and geo-grid prior to the paving of Arrowhead Avenue. During the grading operation on Arrowhead Avenue, unsuitable material was discovered in an area between Cluster Avenue and Valley Street. The soil was analyzed and found to be unsuitable subgrade material, the Soils Engineer recommended that this soil be amended and 3-inch rock be placed to stabilize the subgrade, and then 3-inches of asphalt grindings and geo-grid be placed to stabilize the subgrade. The parameters of the unsuitable soil were found to be 18-feet wide from station 26+00 to station 28+00 on the east side of the roadway, and 24-feet wide from 23+50 to 27+50 on the west side of the roadway. The contractor was directed to perform the work on a time and material basis, with the total cost to be determined when the work is completed. This change order provides compensation for the extra work at an estimated cost of $15,500.00. C.C.O. DISCUSSED WITH: Construction Engineer: Roy King Bridge Engineer: FHWA Rep. YES NO Name: ESTIMATE OF COST THIS JOB TOTAL TO DATE Item $ $ Force Account $ 15, 500. 00 $ 15, 000. 00 Agreed Price $ $ Adjustment $ $ Total $ 15,500.00 $ 15, 000. 00 Federal Segregation: Federal No. $ Dist Prior Approval By: Date: H.Q. Issue & Approval By: Date: Suppl. Funds Provided: $ RESIDENT ENGINEER 0 CONTRACT CHANGE ORDER NO. 1 REV NO. SUPPL. NO. ROAD PAVEMENT REHABILITATION-ARROWHEAD AVE SHEET 1 OF 1 FED NO. DBL-5033 (005) CONTRACT NO. 8815 TO: MATICH CORPORATION You are hereby directed to make the herein described changes from the plans and specifications or do the following described work not included in the plans and specifications on this contract. NOTE: This change order is not effective until approved by the State Highway Engineer Description of work to be done, estimate of quantities, and prices to be paid. Segregate between additional work at contract price, agreed price and force account. Unless otherwise stated, rates for rental of equipment cover only such time as equipment is actually used and no allowance will be made for idle time. The last percentage shown is not accumulated increase of decrease from the original quantity in the Engineers Estimate. EXTRA WORK AT FORCE ACCOUNT: Place 3-inch rock into the existing soil to stabilize the subgrade, 3-inches of asphalt grindings and geo-grid to stabilize the subgrade on Arrowhead Avenue between Cluster Avenue and Valley Street, as directed by the Resident Engineer, at a total estimated cost of $15,500.00. ESTIMATED COST DECREASE $ INCREASE $ 15,500.00 By reason of this order the time of completion will be adjusted as follows: 10 - working days Submitted by: Resident Engineer, Date: Approval Recommended: Date: Approved: City Engineer Date: We the undersigned contractor, have given careful consideration to the change proposed and hereby agree, if this proposal is approved, that we will provide all equipment, furnish all material, except as may otherwise be noted above, and perform all services necessary for the work above specified, and will accept as full payment therefor the prices shown above. Accepted Date: Contractor: By: Title: If the contractor does not sign acceptance of this order, his attention is directed to the requirements of the specifications as to proceeding with the work and filing a written protest within the time therein specified.