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Home My WebLink About2012-350 AMS - J F Wilkerson Contracting Co for Change Order @2 for Brookhollow Creek Pump Station #219,257.78 Change Order No. 2 Date of Issuance: August 13,2012 Effective Date: August 13,2012 Project:Buckhorn Area North of 1-85 and owner:Orange County, Owner's Contract No.: SRF:CS370884-01 Efland Sewer System Improvements North Carolina STAG: XP95456411 Contract:Buckhorn Area North of 1-85 and Efland Sewer System Date of Contract: August 31,2011 Improvements Contractor:J.F.Wilkerson Contracting Company,Inc. Engineer's Project No.: 11,01111 The Contract Documents are modified as follows upon execution of this Change Order: Description: Increase the capacity of the pump station from a 250 gpm pump station to a 550 gpm pump station. This change includes the deepening of the wet well,increase in size of the pumps,increase in generator size and change in associated piping sizes and depths. Attachments(list documents supporting change): Pump Station Change Summary,Revised drawings E-2.0,E-3.0,E-3.1,E-7.0,E-7.1,and E-7.2,McGill Associates letter dated July 5,2012,and J.F.Wilkerson letters dated July 27,2012 and July 30,2012(with attached cost) CHANGE IN CONTRACT PRICE: CHANGE IN CONTRACT TIMES: Original Contract Price: Original Contract Times: ❑ Working days Z Calendar days Substantial completion(days or date): 450 Days $ 2,942,954.46 Ready for final payment(days or date): 450 Days [Increase] [Decrease] from previously approved [Increase] [Decrease] from previously approved Change Orders Change Orders No. to No. 1: No. to No. 1: Substantial completion(days): 0 Days $ 24,507.94 Ready for final payment(days): 0 Days Contract Price prior to this Change Order: Contract Times prior to this Change Order: Substantial completion(days or date): 450 Days $ 2,967,462.40 Ready for final payment(days or date): 450 Days [Increase] [Deer-ease] of this Change Order: [Increase] [Deer-ease] of this Change Order: Substantial completion(days or date): 90 Days $ 219,257.78 Ready for final payment(days or date): 90 Days Contract Price incorporating this Change Contract Times with all approved Change Orders: Substantial completion(days or date): 540 Days $ 3,186,720.18 Ready for final payment(days or date): 540 Days A RECO ACCE ACC By:L�W(Aut4h , By: MWZV By:��_1111 t, ) 10 --;;F Enginee (Auiho;Zd Signature) 0 r(Authorized Agnature) ontrWor(Authorized Signature) � t, t � i Date: Date: ► " Date: C-) Approved by Funding Agency(if applicable): Date: EJCDC C-941 Change Order Prepared by the Engineers Joint Contract Documents Committee and endorsed by the Construction Specifications Institute. Page 1 of 2 This Instrument has been pro-audited In the manner required by the Local Government Budget and Fiscal Contr Act J01 Clarence G.Grier,Assistant Co.Manager w CFO Buckhorn Area North of 1-85 and Efland Sewer System Improvements Project Orange County, North Carolina Summary of Brookhollow Pump Station Redesign Pricing PUMP STATION BID PRICING 77 Constructing 250 GPM Pump Station 1 LS $195,000.00 $195,000.00 9 8"DIP 6'-8' 86 LF $40.77 $3,506.22 26 Installing extra depth manholes above 6' 0 LF $123.00 $0.00 $198,506.22 PUMP STATION REDESIGN PRICING 77 Constructing 550 GPM Pump Station 1 LS $399,719.00 $399,719.00 9 12" DIP 24'-26' 90 LF $180.00 $16,200.00 26 Installing extra depth manholes above 6' 15 LF $123.00 $1,845.00 $417,764.00 ANTICIPATED COST IMPACT OF PUMP STATION REDESIGN $219,257.78 * NOTE: Unit price items may change due to site conditions and actual quantity installed. 4 McGM A S S O C I A T E S July 5,2012 Mr. Christopher Stike Project Manager JF Wilkerson Contracting Co.,Inc. Post Office Box 183 Morrisville,North Carolina 27560 RE: Brookhollow Pump Station Changes BuckhorwEfland Sewers Orange County,North Carolina Dear Mr. Stike: We believe that we are at the point of having final plans for the proposed changes to modify the Brookhollow pump station and associated force main for the subject project. Please find attached revised plan sheets E7.0,E7.1, E7.2, E3.0, E3.1, and E2.0. Changes to those plan sheets have been clouded or printed in red. Further, the technical specifications for the pump and electrical shall be modified as follows: I • Proposed pumps shall be 550 gpm at 110' TDH, 50 horsepower. • Engine-generator set shall be rated for :150 kW at 0.8 power factor, with a minimum starting KVA at 15%voltage dip of 600 KVA • The two (2) circuit breakers specified to be 3 pole, 3 phase, 90-amp shall be 250 amp,from the generator and utility service. The generator mounted circuit breaker shall also be 250 amp. • The specification requiring the engine to.be 4 cycle,276 cubic inch displacement, 1� 1800 rpm shall be deleted. • The sub-base fuel tank for the generator shall be 500 gallon capacity in lieu of 227 gallon. • The automatic transfer switch shall be 200 amp in lieu of 150 amp. There have been some additional plan changes since you last provided pricing, so please review and provide updated pricing. j I I i Engineering • Planning • Finance McGill Associates,P.A.•P.O.Box 1136,Hickory,NC 28603•124019`"St.Lane,NW,Hickory,NC 28601 Office:828-328-2024•Fax 828-328-3870 Mr. Christopher Stike March 30,2012 Page 2 We appreciate JF Will{erson's continued efforts in the construction of the Buckhorn-Efland Sewers project and look forward to the completion of a successful project. If you have any questions, please do not hesitate to contact us. Sincerely, Mc LL ASSOCIATES, P.A. DOUG CHAP ,PE Senior Pr ' ct Manager :dc cc: Mr. Jeff Thompson, Orange County Mr.Kevin Lindley,PE, Orange County,w/attachments Mr. Wes Wightman,PE,McGill Associates,PA FA2011 PROJECTS\11.01111 ORANGE COUNTY-Efland Buckhom Sewer Proposal\04_Construction Phase\Correspondence\CS pump station plans 07-5-12.docx I I I i I i I I i Engineering • Planning • Finance I , McGill Associates,P.A.•P.O.Box 1136,Hickory,NC 28603•124019"St.Lane,NW,Hickory,NC 28601 • 828-328-2024•FAX 828-328-3870 July 27,2012 Mr. Douglas Chapman McGill&Associates 124019th St Lane NW Hickory, NC 28601 Re: Efland Sanitary Sewer Improvements Dear Mr. Chapman This letter is to request the addition of a bid item not included in the original bid. The pipe from Manhole#1 to Manhole#2 had been changed from 8" DIP to 12" DIP. The depth has been changed from 6 to 8 feet deep to 24 to 26 feet deep. This depth will require Class 50 DIP with special bedding. 90 If 12" DIP 24'to 26' @ $180.00 If Manhole#2 will be moved away from Brookhollow Road approximately 15 feet. The revised plans will make this manhole deeper,from 5 feet to 20.8 feet. The sewer was approximately 6 feet from the cement asbestos waterline. The new alignment will decrease the change of damage to the waterline. The increase depth of the wet well will require moving the wet well approximately 15 feet away from the property line to allow for sloping of the excavation to the new depth of 35 feet. Both the relocation of manhole#2 and the wet well will remain in the property lines. Sincerely J F WILKERSON CONTRACTING COMPANY, INC J se P h Wilkerson -JFIL RSO CONTRACTING;CO., INC. July 30, 2012 Mr. Douglas Chapman McGill&Associates 124019t'St Lane NW Hickory, NC 28601 Re: Efiand Sanitary Sewer Improvements Dear Mr. Chapman I have enclosed the revised change order for the Efiand Pump Station. Bitting Electric has given $20,533.00 reduction for the 150 KW,generator. All the controls and switches did not change. Pete Duty and Associates will give a deduction of$1,200.00. The pumps and controls have not changed. The only change is the decreased motor horsepower. 1 have added one item for Manhole#1 for additional depth. At the time we priced the original change order,we did not have the new depths for the manhole. Sincerely J E WILKERSON CONTRACTING COMPANY,INC, oseph Wilkerson P.O.Box 183 Morrisville,NC 27560 (919) 467-1$29 Fax(919)467-6269 EFLAND SANITARY SEWER IMPROVEMENTS PUMP STATION BREAK DOWN WITH ORGINAL VERSUS CHANGE ORDER COSTS DATE: JULY 31,2012 ORGINAL PS CHANGE ORDER PS DESCRIPTON UNIT PRICE UNIT PRICE Excavation,Installation_and Backfill Wet Well $ 17,500.00 $ 59,700.00 Hauling of Excavated Material from Wet Well and Returning $ - $ 14,500.00 Installation of Piping,Pumps and Valve Vault $ 26,428.00 $ 44,500.00 Wet Well(Material OMy) $ 4,362.00 $ 16,995.00 Wet Well Coating(Subcontractor) $ 5,426.00 $ 7,806.00 Valve Vault(Material Only) $ 2,200.00 $ 2,200.00 Piping(Material Only) $ 12,100.00 $ 19,134.00 Electrical(Subcontractor includng Generator with 150 kw priced in CO) _ - $ 65,538.00 $ 100,064.00 Additional cost to Install Concrete Ballast beyond Unit Price $ - $ 4,250.00 Crane Rental _ $ - $ 6,600.00 Pumps(Material Cost) $ 29,546.00 $ 78,220.00 Fence(Subcontractor) $ 8,800.00 $ 8,800.00 Clearing(PS Site) $ 10,000.00 $ 12,000.00 Telephone Conduit $ 800.00 $ 800.00 3W Water Service(Installation and Materials) $ 2,700.00 $ 2,700.00 Site Grading $ 7,500.00 $ 12,000.00 Bollards --- $ - 700.00 $ 700.00 PS Wall Mounts $ - $ 3,500.00 Fuel for Generator $ 1,400.00 $ 3,280.00 Manhole#1 (Additional Depth) $ - $ 1,970.00 TOTAL $ 195,000.00 $ 399,719.00 w 9 0 ! 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