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Home My WebLink About1993-1432517L/1589 N0. 3 AN ORDINANCE AUTHORIZING THE EXECUTION OF A CHANGE ORDER TO A CONTRACT BETWEEN THE CITY OF DENTON AND GRACON CONSTRUCTION COMPANY ; PROVIDING FOR AN INCREASE IN THE CONTRACT PRICE; AND PROVIDING AN EFFECTIVE DATE. WHEREAS, on JULY 21, 1992 , the City awarded a contract for the construction of certain improvements to GRACON CONSTRUCTION COMPANY in the amount o 8,647,000.00 ; an WHEREAS, the City Manager having recommended to the Council that a change order be authorized to amend such contract with respect to the scope and price and said change order being in compliance with the requirements of Chapter 252 of the Local Government Code; NOW, THEREFORE, BE IT ORDAINED BY THE COUNCIL OF THE CITY OF DENTON: SECTION I. That the change order to the contract between the City and GRACON CONSTRUCTION COMPANY J.a copy of which is attached hereto, in the amount o T ONE HUNDRED TWO THOUSAND AND 00/1.002 Dollars 102,000.00 s hereby approved and the expenditure of funds therefor s ereby authorized. SECTION II. That this ordinance shall become effective immediately upon its passage and appro al. PASSED AND APPROVED this the day of , 1993. BOB CASTLEBERRY, ATTEST: t`D AS TO LEGAL FORM: ADAMI DRAYOVITCH, CITY ATTORNEY BY: '/✓vie �c.1—Gi — DATE: August 17, 1993 CITY COUNCIL REPORT TO: Mayor and Members of the City Council FROM: Lloyd V . Harrell, City Manager SUBJECT: PURCHASE ORDER #26052A - GRACON CONSTRUCTION CO. WASTEWATER TREATMENT PLANT IMPROVEMENTS CHANGE ORDER #9 RECOMMENDATION: We recommend change order #9 in the amount of $102,000.00 to Gracon Construction Co. for the Wastewater Treatment Plant Improvements be approved. Public Utility Board recommends approval. SUMMARY: This change order will provide for the repainting of all existing ferrous metal surfaces at the Wastewater Treatment Plant; plus a small amount of concrete at the two (2) digesters. BACKGROUND: Memorandum date August 17, 1993; change order documents. PROGRAMS, DEPARTMENTS OR GROUPS AFFECTED: Pecan Creek Wastewater Treatment Plant, Gracon Construction Co. FISCAL IMPACT: Funds for this change order will come from Utility Revenue Bonds for Wastewater Treatment Plant Improvements account #674-082-RB93-U102-9101. Respetfu subm' . Lloyd V. Harre City Manager A roved: Name: Tom D. Shaw, C.P.M. Title: Purchasing Agent 402.DOC 07%30/93 11:58 128173837334 UTILITIES +»» DAVE RAN 0 001%007 TO: FROM: August 17, 1993 CITY COUNCIL AGENDA ITEM Mayor and Members of the City Council R.E. Nelson, Executive Director of Utilities SUBJ*: Consider Change $102,000.00 to the wastewater for Repainting Components RECOMMENDATIONS: Order No. 9 in the Amount of Gracon Constraction Company for Treatment Plant Improvements Contract Existing Metal and Concrete Structural The Public Utility Board recommends that the City Council approve Change Order No. 9 for $102,000.00, SUMMARY This Change Order will provide for the repainting of all existing ferrous metal surfaces at the wastewater Treatment Plant; plus a small amount of concrete at the two (2) Digesters. BACXGROUND: During the early months of project review, it was the design intent to repaint all exposed metal surfaces of the existing Wastewater Treatment Plant. In addition, there was a small amount of concrete surfaces at the two Digesters which needed painting, In anticipation, of a cost overrun before bidding this project, the repainting was eliminated in order to stay within a project budget of $11,000,000. Subsequently the project came in at a low bid of $8,647,000; far below the Engineer's and Budget Estimate. The problem still existing is the corrosion of numerous exposed metal surfaces and the discoloration of some concrete at the two Digesters where sludge has etched the concrete. The existing paint is severely deteriorated and is no longer capable of adequately protecting the ferrous metal surfaces from the destructive effects of oxidation. with proper maintenance, a new coat of paint could provide protection for an ten years and possibly more. 97, 90i9J 11:59 '*8173857554 UTILITIES 444 DANE HANK [a002/007 PROGRAMS, aROUPS, AND DEPARTMENTS AFFECTED: Citizens of Denton, Denton '.Municipal Utilities and Gracon Construction Company, FINANCIAL SLTMMARY: Alan Plummer and Associates Engineer's Estimate Original Contract Amount (Gracon Construction Co.) New Increase Decrease <> in Contract Amounts., Previous Change Order No. 1 <$ 6,125.00> Previous Change Order No. 2 <$ 9,640,97> Previous Change Order No. 3 $ 2,982.00 Previous Change Order No. 4 <$ 4,95C.83> Previous Change Order No. 5 $71,187,00 Previous Change Order No. 6 $ 9,98C.00 Previous Change Order No. 7 $ 6,196.00 Previous Change Order No. 8 $34,424.00 This Change Order No. 9 $102,000.00 Total of Change Orders Revised Contract Amount Net Change in Contract Time $11,000,000 $8,647,000 $206,052.20 $8,853,052.20 0 Calendar Days Revised Contract Completion Time 730 Calendar Days Percent Change Orders per Original Contract Amount 2.380 of 22.9a 08:24 =8i73837334 L71L111LS ++> Ltltt IlAffi kwUVJ'uu. Prepared by: C. David Ham, P.E., Manager of Construction Projects Approved by: Lee Allison, P.E., Director Water Engineering and Operations Exhibit I: Change Order No. 9 Exhibit II: Backup Data 2CM115.wp Respectfully submitted, R. E. Nelson, Executive Director Department of Utilities CHANGE ORDER [CO] Page 1 of 3 PROJECT: Pecan Creek wwTP improvements PROJECT NUMBERS OWNER: CITY OF DENTON, TMM$ Owner:II-102 (City) 3=XNEER: Alan Plummer and Associates Inc. Yagineer:4 7-0425 WAX) CONTRACTOR: Gracon_Construction Owmany Contractor: 9203 CAAYOZ ORDER: 09 _ _ Date: 7/30/93 The compensation agreed upon in this Change Order is a full, complete and final payment for all costs the Contractor incurs as a result of or relating to this change, whether said costs are known, unknown, foreseen or unforeseen at this time, including without limitation, any costs for delay, extended overhand, ripple or impact cost, or any other effect an changed or Pre esaed contra.At Ngdifica inn Time Extension/Days 1. REFERENCE am 291 This Contract Modification Request provides for the repainting of all esterior ferrous metal surfaces on Plant such as equipment, handrails, valve operators, pipes, *to. and small amount of Digester concrete Amount $102,000 TOTAL 0 Calendar Days $102,000 Exhibit T CHANGE ORDER [COI Alan Plummer and Associates Engineer'C Hstimate Original Contract Amount (Gracon Construction Co.) New Increase or Decrease <> in Contract Amounts: Previous Change Order No. 1 <$ 6,125.00> Previous Change Order No. 2 <$ 9,640.97> previous Change Order No. 3 $ 2,982.00 Previous Change Order No. 4 <$ 4,950.83> Previous Change Order No. 5 $71,167.00 Previous Change order No. 6 $ 9,980.00 Previous Change order No. 7 $ 6,196.00 previous Change Order No. 8 $34,424.00 This Change Order No, 9 $102,000.00 Total of Change Order# Revised Contract Amount Net Change in Contract Time Revised Contract Completion Time Percent Change Orders per Original Contr=t Amount ATTACHED: Clot 29 Distribution: 2 page of 3 $11,000,000 $8,647,000 $206,052.20 $8,853,032.20 0 Calendar Days 730 Calendar Days 2.38% 457-0425 D.22 Dave Ham City of Denton 437-0420 D.22 Purchasing City of Denton Joe Graves Oracon Construction Finance City of Denton Ron Janson Gracon Construction R. E. Nelson City of Denton Jermifer Walters, City Secretary Lee Allison City of Denton From; 8173879844 at 0617-383-7158 To: CAU(D HAN at 09-387-9844 0r-0-7J 0Y.41 PA ee3 of ee3 CHARM ORDER [CO] 3 page of 3 Reoomuended by Consulting Qngi.nesri Approved Contr for >sy for Alga p usurer Inc. and Associates, Ina. Date ��j Date &i Approved by Manager of Construction protects: for City of Denton, Texas Approved by Purchasing Agent c" for City of Denton, T Approved�Dire*tor of Water EaginseringWater Eaginsering and oparatioaa BY for Ciy of Dantoa, Texas Approved by Executive Director of Utilities BY for City of Denton, Tease Approved by City Council Dr , City !Imager for City of Denton, Texas ($16,000 and above) 7-5 CONTRACTOR'S MODIFICATION REQUEST [CMR] OWNER CITY OF DENTON P OJt=CT NO, PROJECT PECAN CREEK WWfP IMPROVEMENTS OWNER U102 CONTRACTOR GRACON CONSTRUCTION INC. CONTRACTOR 9203 ENGINEER . ALAN PLUMMER AND ASSOCIATES, INC. ENGINEER 457-0425 RESIDENT REPRESENTATIVE CLETE MARTIN CMR NO. VA NOTIFICATION BY CONTRACTOR: WE ARE PROPOSING TO MAKE THE CHANGE TO THE CONTRACT DESCRIBED IN THE ATTACHED MATERIALS AND REQUEST THAT YOU TAKE THE FOLLOWING ACTION: ❑ NOTIFY US THAT YOU CONCUR THAT THIS CHANGE DOES NOT REQUIRE A CHANCE IN CONTRACT TIME OR AMOUNT AND ISSUE AFIELD ORDER - ISSUE A CHANGE ORDER FOR PERFORMING THE DESCRIBED CHANGE. CHANGE IN CONTRACT AMOUNT AND TIME ARE INDICATED IN ATTACHED DETAILED COST BREAKDOWN AND REVISED SCHEDULE. ❑ ISSUE A CHANGE ORDER FOR THE DESCRIBED CHANGE WITH PAYMENT AT THE UNIT PRICE 910. ❑ AUTHORI THE CONTRACTOR TO PROCEED WITH THE CHANGE UNDER THE TIME AND MATERIALS PRO THE CONTRACT. • DATE: BY ENGINE&S RESPONSE: WE RESPOND TO YOUR REQUEST AS FOLLOWS: ❑ WE CONCUR THAT THIS IS A NO COST OR TIME CHANGE. SEE ATTACHED FIELD ORDER. OUR PROPOSAL IS RECOMMENDED TO THE OWNER. SEE ATTACHED CHANGE ORDER. ❑ PROCEED WITH THE CHANGE AT THE UNIT PRICE BID. SEE ATTACHED CHANGE ORDER. ❑ PRw CHANG& UN E AND MATERIALS PROVISIONS 9P THE CONTRACT. BY: DATE: a AC11ON TAKEN: ❑ PROPOSED CONTRACT MODIFICATION REZCTED. CONTRACTOR NOTIFIED NOT TO PROCEED. BY: DATE ❑ FIELD ORDER ISSUED: NO. DATE; 9Y ❑ CHANGE ORDER ISSUED: NO. � DATFs EI 4F�� 4jv�ip/cT�N r O 010 89, 99� 4p /lt 7 0 ° / o j 4 9 5{ ffff1C4 M MAILING ADDRESS: P.O. BOX 850756, MESQUITE, ITEMS OF EXTERIOR PAINTED SURFACES Hmzo TEXAS 75185-0756, PHONE: (214) 222-8533 FAX: (214) 222-8342 1. Bar Screens and all painted items in that area 2. MCC at Bar Screens 3. Handrails at Raw Sewage P.S. 4. Handrails at Administration Building area 5. Handrails, door and windows at Primary Sludge P.S. 6. Primary Clarifiers (6) above water surface only 7. Handrail and Misc. Items @ Aeration Basins 1 - 7 8. Final Clarifiers (5) above water surface only 9. Thickeners (3) above water surface only 10. Filters (3) handrail, bridges and misc. painted items 11. Digesters (2) all items above the cover, excluding cover itself, handrail, doors and windows 12. Sludge Beds, exposed piping 13. Chlorination & Dechlorination Basins, handrail, pumps and valve operators 14. Valve Box covers (75 ea.) 15. Manhole covers (35 ea.) 16. Misc. stairs, landings, handrail and valve operators around site.