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Home My WebLink AboutItem 4.15 I-580SanRamonIntercha CITY CLERK File # D~[Q[Q]-~ AGENDA STATEMENT CITY COUNCIL MEETING DATE: September 7, 2004 Change Order Authorization - Contract No. 03-11, I-580/San Ramon Road Interchange Improvement Project Report Prepared by: Melissa Morton, Public Works Director Change Order Summary, together with Contract Change Orders 11 and 13 Budget Change Form SUBJECT: ATTACHMENTS: 1. 2. ~ Approve Change Orders 11 and 13 Approve budget change in the amount of$58,583 to fund Change Order 14, bid item overruns, and additional anticipated project costs RECOMMENDATION: 1. 2. FINANCIAL STATEMENT: Original Contract Amount: Contingency: TOTAL Approved Construction Budget: Approved Change Orders to Date: Change Orders 11 and 13: Estimated Cost for Change Order 14: Adjustment to Change Order 4: Estimated Final Cost for Change Orders: Supplemental Items Estimated Final Cost: Bid Item Cost Overruns: Original Contract Amount: TOTAL ESTIMATED FINAL: Additional Funding Needed: $ 1,355,555 $ 311,590 $ 1,667,145 $ 61,592 $ 58,913 $ 15,000 $ 1.981 $ 137,486 $ 134,987 $ 97,700 $ 1.355,555 $ 1,725,728 ($ 58,583) The Tri-Valley Transportation Development Fee 20% funds will be used for this additional funding request and adequate funds are available for the budget change. DESCRIPTION: The I-580/San Ramon Road Interchange Improvement Project is approximately 98% complete. For projects on which the cost exceeds $500,000, the City Manager or his --------------------------------------------------------------- COPIES TO: lVVL g:\miscproj\580-San Ramon\construction\agst ceo Author 11-13 ITEM NO. J..M u designee is authorized to approve contract change orders up to a limit of $25,000, or a cumulative increase of 5% of the contract cost. Contract Change Orders 11 and 13 have exceeded the authorized limits and, therefore, require Council approval. Contract Change Order 11 incorporates additional work performed in the San Ramon median where new landscaping was installed. It was determined in the field that the existing median strip of San Ramon Road was constructed over an existing roadway structural section of asphalt concrete and cement treated base covered with decomposed granite. This differing site condition required the Contractor to remove all unsuitable materials, including the cement treated base, using heavy equipment, performing hand and light- powered excavation to protect existing facilities and utilities, and reconstructing the asphalt concrete pad for the new median curb. The total cost to perform this change order is $39,912.82. Contract Change Order 13 consists of several items of work, including base repair of portions of San Ramon Road that show transverse cracking. Several segments of San Ramon Road between Dublin Boulevard and the new off-ramp show evidence of transverse cracking. To alleviate the reappearance of transverse cracks, the street structural section needs to be repaired and pavement reinforcement fabric placed prior to the asphalt concrete overlay of San Ramon Road. For this work, the Contractor will be paid the lump sum amount of$19,000.00. The total amount of the two change orders is $58,912.82. Since the total amount of the change orders exceeds the authorization limit granted to the City Manager, it is necessary for the City Council to approve these change orders. It is anticipated that other project costs will need to be approved, including an additional change order, extra cost for supplemental items that include PG&E utility relocation and California Highway Patrol services (COZEEP), and bid item cost overruns. The bid item cost overruns are a result of the design consultant's underestimation of several bid item quantities; additional roadway quantities based on the project's revised traffic handling plan; and additional quantities for erosion control, signs, asphalt concrete, temporary crash cushion module, retaining wall concrete and steel. Overall, the total final cost is estimated at $1,725,728, which is $58,583 more than the project budget. Staff recommends that the City Council approve Change Orders 11 and 13. It is further recommended that the Council approve a budget change in the amount of $58,583 to fund Change Order 14, bid item overruns, and additional anticipated project costs. Page 2 0tJ L I~q CHANGE ORDER SUMMARY DATE: August 25,2004 PROJECT NAME: 1-580/San Ramon Road Interchange Improvement Project CIP#: 96380 CONTRACT NO: 03-11 CONTRACTOR: De Silva Gates Construction PERCENT COMPLETED: 99% ORIGINAL BID PRICE: $1,355,555.00 Contingency: $195,209.00 Supplemental Items: $116,381.00 Contingency Total: $311,590.00 Approved Construction Budget: $1,667,145 CHANGE ORDERS: CHANGE ORDER #1 $500.00 CHANGE ORDER #2 $4,140.00 CHANGE ORDER #3 $2,202.44 CHANGE ORDER #4 $4,000.00 CHANGE ORDER #5 $1,787.55 CHANGE ORDER #6 ($5,000.00) i CHANGE ORDER #7 $10,500.00 i CHANGE ORDER #8 $5,139.77 CHANGE ORDER #9 $17,433.00 CHANGE ORDER #10 $13,310.00 CHANGE ORDER #11 $39,912.82 CHANGE ORDER #12 $7,580.00 CHANGE ORDER #13 $19,000.00 ITOTAL OF CHANGE ORDERS: I $120,505.58 I CURRENT CHANGE ORDER DESCRIPTION: I See attached memo. I ADJUSTED CONTRACT AMOUNT: $1,476,060.58 q..í..C<-t I ,Lt. \5 AITACHMENT. . . '-'", .., --.., - --- - --- ---- --.. --- ---- .-- --- .-- PROGRESS PAYMENTS MADE: PAYMENT #1 PAYMENT #2 PAYMENT #3 PAYMENT #4 PAYMENT #5 PAYMENT #6 PAYMENT #7 PAYMENT #8 ITOTAL PROGRESS PAYMENTS: I REMAINING BALANCE: $42,070.00 $205,755.00 $133,078.30 $182,314.58 $133,275.45 $551,750.07 $158,842.84 $59,641.95 $1,466,728.19 $9,332.39 RECOMMENDATION SIGNATURES: APPROVED DENIED APPROVED DENIED G:\Miscproj\I-580-San Ramon Road\Construction\CCO Summary 3 APPROVED DENIED Ma or :;100 1 CITY OF DUBLIN 3~q CONTRACT CHANGE ORDER NO. 11 PROJECT/ROAD: CONTRACT NO. Interstate 580 / San Ramon Road Interchange Improvements City Project No. 03~11 PAGE 1 OF 5 PAGES 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 accwnulated increase or decrease from the original quantity in the Engineer's Estimate. The existing median of San Ramon Road was constructed over an existing roadway structural section of asphalt concrete and cement treated base and covered with decomposed granite. The existing structural section is suitable for the new roadway between HM stations 349+62.28 and 350+ 16.78. Excavation of the existing roadway structural section is required in the median between HM station 350+ 16 and 352+49 to allow for drainage and installation of top soil for the planting areas. In the areas to receive brick pavers, the existing median structural section shall remain in place as the base for the brick pavers to be installed. The depth of the excavation will vary depending on the size of the plants. Following excavation, clean soil shall be placed for the bedding of the landscape planting as listed below. Due to anticipated low production and hand work required around the existing utilities, the work at the narrow median from HM station 351 +20 to 352+49 shall be paid for as extra work at force account. Install modified B3 median curb in lieu of Al-150 and Al·200 median curbs and place asphalt concrete as a base to be dowel into for the median curb. ADJUSTMENT OF COMPENSATION AT AGREED LUMP SUM PRICE: Delete roadway excavation and construction of the new structural section in the median area between HM station 349+62 and 350+ 16 at 3.41 Right to 3.55 Left. For this deletion of the roadway section within these limits the City will receive a credit of $10,500.00. Adjustment of Compensation at Agreed Lump Sum Price ~ $10,500.00 Excavate the existing roadway section and backfill with clean soil in the planting areas as shown on sheets 3 and 4 of this change order and as listed in the table below: HM station 349+60 to 350+16 350+16 to 350+60 350+60 to 350+95 35Ò+95 to 351+20 Excavation Depth 150 mm 600 rnrn 350 rnrn 900 mm BackfiIline: None 400 rnrn 150 rnrn 700 rnrn For the excavation of the median and backfilling between HM stations 349+60 to 351 +20, the Contractor will be paid the agreed lump sum price of $32,000.00. This amount constitutes full compensation, including markups, for the work of this change. Agreed Lump Sum Price = $32,000.00 EXTRA WORK AT FORCE ACCOUNT: Pothole the existing median of San Ramon Road at the locations marked in the field and as directed by the Engineer to verify the depth of the existing roadway structural section. Force Account Cost $1,062.82 CONTRACT CHANGE ORDER NO. 11 ~~q PROJECTIROAD: San Ramon Road Interchange Improvement Project PAGE 2 OF 5 PAGES CONTRACT NO. 03~11 To: DeSilva Gates Excavate the existing roadway structural section in the narrow portion of the median and backfill with clean soil as shown on sheets 3 and 4 of this change order and as listed in the table below: HM station 351+20 to 351+50 351+50 to 351+70 351+70 to 351+96 351+96 to 352+13 352+ 13 to 352+39 352+39 to 352+49 Excavation Denth 900 mm 600 mm 900 mm 600 mm 900 mm 600 rom Backfilline: 700 nun 400 nun 700 mm 400 rom 700 nun 400 mm Excavation within the areas described above shall be perfonned by hand excavation or light powered equipment as necessary to protect existing facilities and utilities. The estimated force account cost ofthis work is $17,000.00. Estimated Force Account Cost $17,000.00 ADJUSTMENT OF COMPENSATION AT AGREED LUMP SUM PRICE: Install modified B3 curb in lieu curb type AI" 150 and A 1 ~200 curb in the median of San Ramon Road between HM station 350+ 16 and 352+49 as shown on sheet 5 of this change order. For this change in curb type, the City will receive a credit of$2,650.00. Adjustment of Compensation at Agreed Lump Sum Price =" $2,650.00 EXTRA WORK AT FORCE ACCOUNT: Place an asphalt concrete pad (Type A Asphalt Concrete) 220 rom wide and 75 rom thick between HM station 351 +00 and 351 +40 at .9 meters left of the station line. The asphalt concrete section shall serve as a base for the new median curb and to backfill the void created by the removal of the gutter pan of the existing curb that was not shown on the plans. Estimated Force Account Cost $3,000.00 TOTAL COST INCREASE: $39.912.82 BY REASON OF THIS ORDER, THE TIME OF COMPLETION WILL BE ADJUSTED o WORKING DAYS SUBMITTED BY: DED BY: APPROVED BY: u-1t:1L ~¿~ # Date i -! Meliss Morton Date Director of Public Works We, the undersigned contractor, ve given careful consideration to the change proposed and hereby agree, if this proposal is approved, that we will provide quipment, furnish all materials, except as may otherwise be noted above, and perfonn all services necessary for the work above cified, and will accept as full payment therefor the prices shown above. Contractor: DeSilva Gates Construction LP By: TitI c: 'P1tø~ ~ .,- k...Þ, tiAi5€",- If the Contractor does no Ign acceptance of this order, his attention is directed to the requirements of the specifications as to proceeding with the ordered work and filing a written protest within the time therein specified. I I I r I .~ ;:::: t, r I . I ,. q 1,\ I \.\ ,. ., !! Ii ,/ I~.' ,../ /'" / /'/ / , PAVING PER CITY OF DUBLIN LANDSCAPE MANUAL TO MATCH DOUGHERTY ROAD MEDIAN. : I · 1 :(; :P : ~I; , !j¡ ;\1 I' ill a; '\ t I ~i ..~I ; I !'I City of Dublin ~:lir~t No. 03-11 1-580/San Ramon Road Interchange Change Order No. \ \ Sheet ~ of 2- : 1 HI i 'I ! ' , . VII t·. '~ Q ,,~ let I . '> ;:::: O i-. , '\ a: +I¡ z: I d;¡! I o ~ i ~I: \ s. .u;¡: \ C' I !Ii \ a: ; Ù ,Ii \ ;\ '. ~..\ ";:/'/ z ; l.c :/j \ c. . 0,1, \ ",' . :¡: \ . - ~I: \ : ".'trl- Ii ' \ ù~11 r- Q.\ : , V') :1: r 'I ¡ If :¡ I' /11. I :\¡ :\; , !! 2150' :! " ,'1 \1 ~ 'J.IIi I :J!i Ii \ . , :1 i 3 XYL CON --- ----...-:::-.:: San Ramon Road City of Dublin ~otU;t;jt'No. 03~11 1-580/San Ramon Road Interchange Change Order No. \ \ Sheet 4 of 5' -- 50 mm AC 100 mm AS c~ -150 mm AC - 250 to 300 mm CTS A-A HM STA 349 + 62.28 TO 350 + 16.52 50AC 100 AS 350 to 600 -150 AC - 250 to 300 CTS ~ 1200 to 4OOD~ BooB HM STA 350 + 16.5 TO 350 + 60 50 mm AC 100 mm AS -150 mm AC - 250 to 300 mm CTS 900 ~ 9DD~ c-c HM STA 349 + 16.5 TO 352 + 39 at Each Tree All Dimensions in Millimeters Modified 83 Curb City of Dublin Contract No. 03~11 I-580/San Ramon Road Interchange Change Order No. II SheetÍ-of~ ,~q r==: --t \30 -*- 'Z.o 50 .f- ~o jL- HM STA 350 + 13 TO 352 + 49 r==:--t \30 -*- 'Z.o 60 L. r HM STA 349 + 62.28 TO 349 + 83.48 All Dimensions in Millimeters CITY OF DUBLIN 3~q CONTRACT CHANGE ORDER NO. 13 PROJECT/ROAD: CONTRACT NO. Interstate 580 / San Ramon Road Interchange Improvements City Project No. 03-11 PAGE IOF 1 PAGES 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. EXTRA WORK AT AGREED LUMP SUM PRICE: The Contractor shall grind the existing asphalt concrete roadway to a depth of 150 mm and a width of 1 M, at approximately HM stations 351+50 Southbound lanes #1, #2, and #3; 351+55 Northbound lanes #2, #3, #4, #5, #6, and #7; 351+90 Northbound lanes #1 and #2; to remove transverse cracks on San Ramon Road. The grinding shall be in the transverse direction and across the full width of the lanes listed above. The limits of the grinding shall be marked in the field by the Engineer. Class A 19 rnm asphalt concrete shall be placed and compacted in the location of the grinding. The material from the grinding operation shall be stock piled in the median area for the base of the brick pavers. Provide traffic control as necessary to perfonn the work described above. Place pavement reinforcing fabric per Standard Specification 39-4.03, just prior to the asphalt concrete overlay of San Ramon Road. The placement of pavement reinforcing fabric shall be from HM station 351+50 to 352+50 in lanes #3, #4, and #5, in the Northbound direction and from HM station 351 +55 to 352+30 lane #3, in the Southbound direction. For this work, the Contractor will be paid the lump sum amount of$19,000.00. This amount constitutes full compensation, including markups, for the work of this change. AGREED LUMP SUM COST INCREASE............ $19,000.00 BY REASON OF THIS ORDER, THE TIME OF COMPLETION WILL BE ADJUSTED o WORKING DAYS 6111/04 Date ðt~ßr Date . We, the undersigned contracto , have given careful consideration to the change proposed and hereby agree, if this propos8:1 is approved, that we will provi all equipment, furnish all materials, except as may otherwise be noted above, and perfonn all services necess the work abo pecified, and will accept as full payment therefor the prices shown above. /2004 Contractor: DeSilva Gates Construction LP By: Title: f'/LÐ;/t:A.r ~ ...7Á If the Contractor does ot sign acceptance of this order, his attention is directed to the requirements of the specifications as to proceeding with the ordered work and filing a written protest within the time therein specified. CITY OF DUBLIN BUDGET CHANGE FORM ttøô ~ CHANGE FORM # New Appropriations (City Council Approval Required): Budget Transfers: From New Revenues From Budgeted Contingent Reserve (1080-799.000) Within Same Department Activity Between Departments (City Council Approval Required) Other _X_ From Unappropriated Reserves (Fund 300) Name: Name: I-580/San Ramon Road Interchange Improvements $ 58,583 Account #: Name: Account #: 300-96380-750-050 Name: Account #: Name: Account #: Name: Account #: Name: Account #: Name: Account #: Name: Account #: Name: Account #: Account #: Fin Mgr/ASD: .,-ç-AJ-<Å- ~.--'\f'- Signature Date: « I ?;\\Ô"1 REASON FOR BUDGET CHANGE ENTRY: To fund additional construction costs required by Contract No. 03-11, I-58G/San Ramon Road Interchange Improvements. City Manager: Date: Signature ·~§~ppfoYêcl:ªt.·tl1~¢itý.:q9t1~~jï·::1yI@t}(tftg·..·6n:···· ·ìjáte: Mayor: Date: Signature Signature ATrACHMEtlI"ß · Posted By: form>\budgchng