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Home My WebLink About4.04 COI-580Tassajara01-12CITY CLERK File No. ❑��-0� AGENDA STATEMENT CITY COUNCIL MEETING DATE: August 5, 2003 SUBJECT: Change Order Authorization — Contract No. 01-12 Interstate 580/Tassajara Road Interchange Improvement Project Report Prepared by: Lee S. Thompson, Public Works Director ATTACHMENTS: RECOMMENDATION: FINANCIAL STATEMENT: Change Order No. 23 Approve Change Order No. 23 Original Project Contract Amount: Project Bid Contingency Amount: Total Construction Budget: Original Project Contingency Amount: $7,124,198 895,770 $8,019,968 $ 895,770 Total Approved Change Orders to Date: ($ 371,978) Amount of Change Order No. 23: ( 72,000) Total All Change Orders: ($ 443,978) Remaining Project Contingency Amount: 451 792 DESCRIPTION: Construction of the I-580/Tassajara Road Interchange Improvement project is approximately 90% complete. During a field review with Caltrans representatives, Caltrans identified the need to revise the finish grade of the embankment of the newly -constructed northbound freeway overcrossing and requested that the bridge embankment be paved with concrete comparable to the slope paving on the adjacent existing freeway overcrossing. This slope paving is required to reduce bridge maintenance and soil erosion underneath the bridge and is a standard Caltrans requirement. Caltrans has approved the design features of Change Order No. 23, which includes excavation of the existing abutment embankment, construction of concrete slope paving, caulking of joints, and providing traffic control to support this work. The not -to -exceed amount of $72,000 for Change Order No. 23 shall be paid to the contractor from the project contingency fund. Since the amount of this Change Order exceeds the $25,000 authorization limit granted to the City Manager, it is necessary for the City Council to approve this Change Order. Staff therefore recommends that the City Council approve Change Order No. 23 in the total amount of $72,000. --------------------------------------------------------------- COPIES TO: Tom Brown, DeSilva Gates 10ITEM NO. g:\miscproj\i-580 Tassajara\project\agst CCO23 Authorization O�Q CITY OF DUBLIN I CONTRACT CHANGE ORDER NO. 23 PROJECT/ROAD: Interstate 580/Tassajara Road Interchange Improvements PAGE 1 OF 7 PAGES CONTRACT NO. City Project No. 01-12, Federal Aid Project No. RSTPL-5432 (011) TO: DeSilva Gates Construction LP 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 Public Works Director. 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. Change requested by: Engineer The last percentage shown is the net accumulated increase or decrease from the original quantity in the Engineer's Estimate. Furnish all labor, equipment and materials necessary to revise finish grade of abutment embankment and extend the existing slope paving underneath Tassajara Rd - Santa Rita Rd OC (Br. 33-0585) as shown on pages 2-7 of this change order. EXTRA WORK AT AGREED LUMP SUM PRICE: For the work of excavating the existing.abutment embankanent to the grades shown on pages 2-7 of this change order, including providing all necessary traffic control, the Contractor will be paid an agreed lump sum amount of $17,000.00. This amount. constitutes full compensation, including markups, for the work of this change. AGREED LUMP SUM COST iNCREASE ............ $17,000.00 EXTRA WORK AT FORCE ACCOUNT: Construct portland cement concrete slope paving, caulk specified joints, construct, maintain and remove concrete washout, and provide traffic control to support this work, in accordance with the details of this change order and as directed by the Engineer. Slope paving shall be constructed as per the details shown on pages 2-7 of this change order and in accordance with Section 72-6 "Slope Paving" of the Standard Specifications. Place caulk between polystyrene and adjacent concrete surfaces at top of slope. Caulk shall be silicone or an alternative approved by the Engineer. Cured caulk shall be grey, white or clear in appearance. Caulk shall not be applied until at least 7 days after placement of paving concrete. ESTIMATE OF COST iNCREASE AT FORCE ACCOUNT .............. $55,000.00 TOTAL ESTIMATED COST INCREASE .............. $72,000.00 BY REASON OF THIS ORDER, THE TIME OF COMPLETION WILL BE ADJUSTED ~ WOP, KING ~/YS SUBMITTED BY.: ~-------~-- Appj~OVALj~E~L:~.MM~DED BY: AP, .p~ ~(~K,V, ED BY// /./J~mes E. Sco: D:e F~4i¢~d Del Rosar[o Date / / gee S. T~p~: ' Date Resident Engineer Sr. Civil Eng~eer P~lic W~kector We, ~e ~dersigned contractor, have given care~l consideration to Ce ch~ge proposed ~d hereby agree, if this proposal is approved, that we will provide all equipment, ~rnish all materials, except as may otherwise be noted above, and perfo~ all services necessary for the work above specified, ~d will accept as ~11 payment therefor the prices sho~ above. Accepted: D:e ~ /~ ~2003 Contractor: ~t~ ~r If the Contractor does not sign acceptance of this order, his a:ention is directed to the requirements of the speci:cations as to proceeding with the ordered work and filing a wri:en protest within the time therein specified. CHANGE ORDER SUMMARY DATE: July 22, 2003 PROJECT NAME: 1-580/Tassajara Road Interchange Improvement Project CIP #: 96420 CONTRACT NO: 00-12 CONTRACTOR: De Silva Gates Construction ~ERCENT COMPLETED: 90% CONTRACT AMOUNT: $7,054,198.00 + $70,000 Incentive = $7,124,198.00 APPROVED BUDGET AMT: $8,019,968 CHANGE ORDERS: CHANGE ORDER #1 $5,000.00 CHANGE ORDER #2 $7,974.00 CHANGE ORDER #3 $6,640.00 CHANGE ORDER #4 $6,212.00 CHANGE ORDER #5 CHANGE ORDER #6 $4,645.00 CHANGE ORDER #7 $4,189.45 CHANGE ORDER #8 $18,650.03 CHANGE ORDER #9 ($1,204.00) CHANGE ORDER #10 CHANGE ORDER #11 $2,095.00 CHANGE ORDER #12 $1,318.26 CHANGE ORDER #13 $245,000.00 CHANGE ORDER #14 ($16,650.50) CHANGE ORDER #15 $5,000.00 CHANGE ORDER #16 $3,500.00 CHANGE ORDER #17 $2,196.84 CHANGE ORDER #18 CHANGE ORDER #19 CHANGE ORDER #20 $5,540.26 CHANGE ORDER #21 $1,298.07 CHANGE ORDER #22 CHANGE ORDER #23 $72,000.00 CHANGE ORDER #24 $15,540.00 CHANGE ORDER #25 $8,297.21 CHANGE ORDER #26 CHANGE ORDER #27 CHANGE ORDER #28 $24,612.08 CHANGE ORDER #29 CHANGE ORDER #30 CHANGE ORDER #31 $15,500.00 CHANGE ORDER #32 $6,624.00 TOTAL OF CHANGE [ORDERS: $443,977.70 CURRENT CHANGE ORDER DESCRIPTION: I See attached memo. ADJUSTED CONTRACT AMOUNT: $7,568,17,5.70 PROGRESS PAYMENTS MADE: PAYMENT #1 $122,392.50 PAYMENT #2 $346,304.00 PAYMENT #3 $690,383.20 PAYMENT #4 $650,903.00 PAYMENT #5 $322,915.00 PAYMENT #6 $1,372,198.00 PAYMENT #7 $928,869.00 PAYMENT #8 $555,172.20 ~AYMENT #9 $119,545.73 PAYMENT #10 $454,340.40 PAYMENT #11 $125,979.11 PAYMENT #12 $305,032.05 PAYMENT #13 $247,810.80 PAYMENT #14 $450,337.27 ITOTAL PROGRESS PAYMENTS: $6,692,182.26 IREMAINING BALANCE ON CONTRACT: $875,993.44 RECOMMENDATION: APPROVED /"~ APPROVED APPROVED DENIED/,/ DENIED DENIED SIGNATURES: ... P_j.gdli~ork~ irect~r City Manager Mayor G:\Miscproj\l-580-Tassajara\Construction\CCO Summary23