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Home My WebLink AboutC2006-270 - 7/18/2006 - Approved ~HANGE ORDER Department of Engineering Services Cit} of Corpus Christi, Texas CHANGE ORDER NO~ PROJECT NO: 7302 CONTRACT TIME: 360 C.D. Operating Department: Wastewater Department DATE: July 11, 2006 "'ame of Project: Antelope & :-.alt FlatsL\rea 36"/48" Wastewater Gravity Lme Contractor: .falco, [ne. See Attached. ADD DEDUCT Why was this change necessary? (If left off the plans and specifications, explain why) See Attached How can similar changes be avoided in the future? See Attached A. CONTRACT PRICE.......................... ............. ........................ $ B. TOTAL CHA.~GE ORDER (inc. current) ........................... $ C. NEW CONTRACT PRICE .................................................... $ D. THIS CHANGE ORDER ....................................................... $ E. PERCENT TOTAL CHANGE (B/ A) .................................... F. PREVIOUS ADDN'L TIME AUTHORIZED ...................... G. ADDN'L CONTRACT TThlE THIS CHANGE ORDER.... H. TOTAL ADDITIONAl. TIME ............................................. 8.614.720.50 1.374.525.64 9.989.246.14 699.833.48 15.96% 150 C.D. - 0 - 150 C.D. .I I APPltOVED: V'lttt't t It ~i.t'h{;fr- ,...... ,T - l<- \,.\'~ k '~1 ':J ~,~t~ ARMANDO CHAPA (1-:' r 5601ET!: AY CITY OF C6RPUS CHRISTL TEXAS By: frl~ ~.~~ /I C;ty Engln.., 1 fi.~ {, / /,,-"t....- ..f tV"" !/t$/p~ By:~:_!Z1 Title: ....;" J, yJ, ~ I 7 If.. .1/(/(;. Ope~ating Department 11\--7 f'1'L -~~ AUT tl1b . Jlc'tlOb ~~-=sill'~' ' -l'rJ tapital Budget Officer . l.J L'~ 1ft' eAW~.l 0 'V At-. __. ".eo ................ ...... /..L~ ~rl"':;>~1 .:; "'(JIL- { '.1'(),1I1 Ol'nllrtmpnt Al1'EST: ~- 2006-270 07/18/06 M2006-222 Jalco ............;- ADD DEDUCT <\. Add the following quantities to the bid items: A25. 36" Sanitary Sewer Line (14' - 16") - 16 L.F. @ $341.00/L.F. $ 5,456.00 81. Controlling Groundwater - 260 L.F. @. $1O.00/L.F 2,600.00 85. 8" pve Sanitary Sewer Lme (6' 8') - 260 L.F. @ $73.00/L.F. 18,980.00 Bll. Sanitary Sewer Connection 6 Ea. @ $1.200.00/Ea. 7,200.00 B13. 4' Diameter Manhole (0' 6') 1 Ea. @ $6.200.00/Ea. 6,200.00 B15. 5' Diameter Manhole (10' 15') 2 Ea. @ $ L2,500.00/Ea 25,000.00 BI9. Asphalt Pavement Repair (TY2) - 160 S.Y. @ $55.00/S.y. 8,800.00 B20 Cement Stabilized Backfill Material 136 c.Y. @ $42.00/C.Y 5,712.00 B23 Trench Safety 260 L.F. @ $3.00/L.F. 780.00 B. Add the following bid items to the project: B25 Demolish & Remove Existing Junction Vault -- 1 L.S. @ $9,000.OO/L.S~ $9,000.00 B26. Plug Existing 24" Sewer :3 Ea. @ $750.00/Ea. 2,250.00 827. Grout Existi ng 24" Sewer 417 L.F. @ $5.00/L.F. 2,085.00 828. Traffic Control 1 L.S. @ $2,817.50/L.S. 2,817.50 829. Grout Existing 8" Sewer 254 L.F. @ $3.50/L.F. 889.00 B30. Femco Connector 2 Ea. @ $800.00lEa. 1,600.00 Subtotal $99,369.50 C. Add the following Part and bid items to the contract: PART D - Whalen Drive D] . Mobilization 1 Ea. @ $4,500.00/Ea. D2. Sod Replacement - 100 S.Y. @ $5.00/S.Y. D3. Trench Safety - 60 L. F. @ $1O.00/L.F. 4,500.00 500.00 hPRO~CT DATA CORPUS\2005 PROJECTS\A05028-00 (C) City of Corpus Christi - Antelope Street and Salt Flats WGIL\05-CONTRACTS & CHANGE ORDERS\2006 7 II Change Order Attach doc 600.00 Attachment to Change Order No. 6 Antelope/Salt Flats Area 3611/4811 Wastewater Gravity Line - Proj #7302 Page 1 of 4 .....- ,- D4. Curb & Gutter Repair 20 L.F @ $20.00/LF. 05. Bypass Pumping .- 1 L.S. @ $2,600.00 D6. Fence Removal and Replacement 60 L.F. @ $20.00/L.F D'i Sanitary Sewer Service ReconnectlOn - 1 Ea. @ $1 ,900/Ea. DX Sanitary Sewer Rehabilitation of 10" wilO.75" using Pipe Bursting Method- 246 L.F. @ $67.00/L.F D9 Dewatering 4 Ea. @ $3.500.00/Ea. DI0. Tie-In at Each Manhole 2 Ea. @ $400.00/Ea. 011 Post CCTV wiT ape and Report 1 L.S. @ $1 ,500.00/L.S. D 12 General Contractor OH and Profit 1 L.S. @ $7,695.39 400.00 2,600.00 1,200.00 1,900.00 16,482.00 14,000.00 800.00 1,500.00 7,695.39 Subtotals $52,177.39 D. Add the following Part and bid items to the contract: PART E. - WINNEBAGO INTER-CONNECTION E 1 24" Sanitary Sewer (8' - ] 0') - 276 L.F. @ $220.00/L.F 60,720.00 F2 36" Sanitarv Sewer 16 L.F. @ S388.00/L.F 6,208.00 E3. 10" Sanitary Sewer 8 L.F. @ $] 50.00/L.F. 1,200.00 E4. 36" Fernco Adaptors - 2 Ea. @ $942.00/Ea 1,884.00 E5. 5' Manhole (8' - 10') - 2 Ea. @ $1 O,OOO.OO/Ea. 20,000.00 E6. 8' Mahole (8' - 10') - 2 Ea. @ $16,000.00/Ea. 32,000.00 E 7. Trench Safety - 300 L.F. @ $5.00/L.F. 1,500.00 E8. Ground Water Control- 276 L.F. Ea. @ $ 12.00/L.F . 3,312.00 E9. Traffic Control - 1 L.S. @ $3A50.00/L.S. 3,450.00 E 10 Storm Water Pollution - 1 L.S. @ $2.100.00/L.S 2,100.00 E 11 Abandon 10" Sanitary Sewer - 325 L.F. @ $S.50/L.F. 1,787.50 J. FRQJECf OAT A CORPUS\2005 PROJECTS\A05028-00 (C) City of Corpus Christi - Antelope Street and Salt Flats WGIL\05-CONTRACfS & CHANGE OROERS\2006 7 11 Change Order Attach.doc Attachment to Change Order No. 6 Antelope/Salt Flats Area 3611/4811 Wastewater Gravity Line -Proj #7302 Page 2 of 4 EI2 Sidewalk Replacement - 459 S.F. @ ~17.00/S.F. 7,803.00 E 13 Curb & Gutter Replacement - 92 L.F. @ $50.00/L.F. 4,600.00 El4 Stabilized Backfill - 312CY @ $42.00/C.) 13,104.00 El5 Pavement Striping - 1 L.S. @ $5.900/L.S 5,900.00 El6 Street Exca\ation - 2,151 S.Y. ~[$24.00/ SY. 51,624.00 El7 Concrete Pavement Over Drainage Boxes - 250 S.Y. @ $135.00/S.Y 33,750.00 E18 8" Concrete Pavement - 1,900 S.Y. ~[ $91.50/S.Y 173,850.00 El9 10" Crushed Limestone - 1 ,900 S.Y. @ $38.00iS.Y. 72,200.00 E20. 5' Standard Curb Inlets - 2 Ea. @ $3,400.00/Ea. 6,800.00 E21 15" Reinforced Concrete Pipe - 12 L.F. @ $175.00/L.F. 2,100.00 E22. Adjust Existing Manhole & Valve Covers - 1 LS. @ $5,()00.00/LS. 5,000.00 E23. Convert Existing Inlets to Junction Boxes - 2 Ea. @ $3,500.00/Ea. 7.000.00 E24. 1 !j/' Galvanized Handrail - 1 L.S. @ $5,600.00/l.S. 5,600.00 j E25. Bond/Mobilization - 1 L.S. @ $5,290.00/L S. 5,290.00 Subtotals 528,782.50 E. Add the following Part and bid items to the contract: PART F. .- ANTELOPE CAVE-IN FI Antelope Ca\ e-in 1 L.S. (ll! $19.504.09/LS $19,504.09 Subtotal 19,504.09 TOT AL ADD $699,833.48 Attachment to Change Order No. 6 Antelope/Salt Flats Area 36"/48" Wastewater Gravity LIne - proj #7302 Page 3 of 4 J PROJBCT DATA CORPUS12005 PROJECTS\A05028.00 (Cl CIty of Corpus Chnstl . Antelope Street and Salt Flats WGIL\05-CONTRACTS & CHANGE ORDERS\2006 ~ 11 Change Older Attach doc Why was this change necessary? fhis change order consists of five separate sections. Sections A and Bare $99,369.50. For these sections, In order to abandon an existing sewer and concrete junction vault that are in very poor condition. new manholes and a new 8" line must be constructed on Cleveland Street. This new ine will connect to the new line that is already under construction on Leopard Street. This constructIOn will then allow for the existmg sewer on Antelope Street, between Doss Street and Leopard Street to be abandoned. In addition. in the vicinity of the Antelope/Leopard mtersection. the sewer that is to be abandoned COllilects to a concrete junction vault. Recently, it was discovered that this vault is In poor condition. With the abandonment of one of the sewers entering this vault. the vault can be removed and replaced with a fiberglass manhole that will more accurately depict the sewer system layout. Section C of this change order is for the repairs/relining of an existing sanitary sewer on Whalen Drive for a cost of $52,] 77. N. Whalen Drive is located on the south side of the City, South of Saratoga, between Everhart and Weber. Based on adjacent homeowner's concerns, about ground subsidence, the existing 10" sanitary sewer within a utility easement adjacent to the homes was cleaned and televised. The.;ewer is of clay pipe and was found to be cracked and/or broken at \anous locations along its 246' length. Due to its location within an easement, and close proximity to existing homes. conventional open excavation repairs are not feasible. This change prder calls for the rehabilitation of the sewer using a trenchless method (pipe bursting), along w1th necessarv surface restorations. Section D of this change order is for $528,782.50 and provides for the installation of an inter- connection between two major trunk systems. By installing this inter-connection, the potential it)!' surcharging of the individual systems can be reduced, This, in turn, reduces the potentials for sewage overflows that would violate Texas Commission for Environmental Quality (TCEQ) regulations. Along with this inter-connection, the \Vinnebago/Brownlee intersection will be reconstructed with concrete navement to eliminate the existing asphalt pavement that is in very poor conditiun. Section E of this change order adds $19,504.09 to the contract for emergency repair on Antelope Street. An existing sanitan sewer within the limits of the project's construction caved in. Although this sewer had already been abandoned, a cavern above the sewer had already formed. But this cavernous condition was unknown until it surfaced in the form of a sinkhole. How can similar changes be avoided in the future? Basically, all five of the sections of this change order were unavoidable. None of these conditions were known at the time of the preparation of the scope, plans and specifications for thIS project. Attachment to Change Order No. 6 Antelope/Salt Flats Area 36"/48" Wastewater Gravity Line - proj #7302 Page 4 of 4 r PROJECT DATA CORPUS\2005 PROJECTS AUS028-00 Ie) City of Corpus Chnsti . Antelope Street and Salt Flats WGlL\05-CONTRACTS & CHANGE ORDERS\2006 7 11 Change Order Attach doc DEPARTMENT OF ENGINEERING SERVICES CHANGE ORDER SUMMARY SHEET JULY 18. 2006 PROJECT' Antelope Street & Salt Flats Area 36"/48" Wastewater Gravity Interceptor Line - Rebid Project No, 7302 APPROVED: City Council on 4/19/05- Motion No, M2005-119 CONTRACTOR: Jalco. Inc POBox 27368 Houston. TX 77227 TOTAL CONTRACT AMOUNT , 25% Limit Amount, $8,614,720.50 2,153,680.13 357,720.76 23,740.72 248,770.55 $24,954.13 $19,506.00 $699,833.48 Change Order No, 1 (10/25/05).. Change Order No 2 (12/06/05) " Change Order No 3 (12/13/05) ., Change Order No, 4 (03/22/06) , Change Order No 5 (04/04/06) , Change Order No 6 (07/18/06) , Total 1,374,525.64= 15.96 < 25% EXHIBIT "B" Page 1 of 5 """'"', .,.-