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Home My WebLink About4 District Pipeline Change order Agenda Item # + . • Public Utility istrict Memorandum To: Board of Directors From: Neil Kaufman Date: August 15, 2005 Subject: Change Order No. 2 for the District Pipeline Replacement-2005 Project 1. Why this matter is before the board: Approval from the Board of Directors is necessary to issue a Change Order to a construction contract. 2. History: The Board previously awarded the District Pipeline Replacement-2005 project to Hard Line Excavating (HLE). On August 17, 2005, the Board of Directors approved Change Order No. 1 in an amount of $47,101.41. 3. New information: The pipeline construction along Schussing Way and Davos Drive has been completed. I am requesting a Change Order to the Contract for issues covered under two general items that will cover all of the issues encountered along Schussing Way and Davos Drive construction. Item 1: On Davos Drive, there are two 38"h x 58"w CMP storm drain culverts located about 4 feet apart. The construction drawings called for the new water pipe to be installed above the culverts. It was determined that the new water pipe could not installed above the culverts since the culverts were shallower that originally thought. HLE was directed to install the new pipe under the culverts. The actual construction involved removal and reinstallation of 20-foot sections of the culverts and took about two days. The cost to perform this work was $17,787.78. The amount paid under Bid Item No. 2B will be reduced by about $1,200 (20 feet x $60 per foot) when the final installed footages are measured. Item 2: There is a portion of Northwoods Boulevard between Davos Drive and Christie Lane has been experiencing low service pressures for a number of years. In the past two Page 1 years, Paul Rose has spent time with a number of residents along this area to identify the problem. The service pressure at the street is marginal in this area and the customers experiencing problems are all on the uphill side. Over the winter of 2004-2005, Operations Staff was able to make some system modifications through the opening and closing of certain valves. However, these modifications must be reversed in order for the system to function properly in the Summer. Consequently, a more permanent solution was needed. The permanent solution to this problem involved extending an area served by higher pressure (the Heidi Way Pressure Zone) along Northwoods Boulevard. In order to accomplish this, it was necessary to excavate the third intersection of Davos Drive and Northwoods Boulevard in order to install a piping bypass around an existing cross. Figures 1 and 2 illustrate the solution to the pressure problem and the actually work performed. This solution was identified in March of 2005. It was hoped that a District crew would have the time to perform this work sometime this Summer. In August 2005, it was determined that a District crew would likely be unable to perform this work due to the heavy workload. Therefore, I requested HLE to perform the work while they were nearby on Davos Drive. The District purchased the pipe and fittings and HLE performed the work on September 7 and 8. While this cross was excavated, HLE also replaced a broken valve that was located at the same intersection. HLE is owed $14,241.46 for this work. 4. Recommendation: I recommend that the Board authorize Contract Change Order No. 2, in the amount of a $32,029.24 payment to Hard Line Excavating from the District. Attachments: Change Order Form Figure 1 Figure 2 Page 2 . ' ';KEE ' • N Change Order Contract Name: DISTRICT PIPELINE REPLACEMENT-2005 Contract Change Order No: 2 Orig. Contract Amt. $ 600,904.00 Days NA Date: September 15, 2005 Prev. Apprd Changes $ 47,101.41 Days NA Contractor: Hard Line Excavating This Change $ 32,029.24 Days NA Revised Contract Amt. $ 680,034.65 Days NA This Change Order covers changes to the subject Contract as described herein. The Contractor shall construct, furnish equipment and materials, and perform all work as necessary or required to complete the Change Order Items for a lump sum price agreed upon between the Contractor and District. Increase in (Decrease) Contract Time Description of Changes Contract in Contract Extension Amount $ ,.Amount($) (days) 1) Install Water Pipe Under Culverts on Davos Drive $17,787.78 NA 2) Install Pipe Bypass and Replace Broken Valve at Third $14,241.46 NA Intersection of Northwoods Boulevard & Davos Drive Totals $32,029.24 Net change in contract amount(increase or decrease) $32,029.24 The amount of the Contract will be increased by the sum of $32,029.24 and the Contract Time shall not be extended. The undersigned Contractor approves the foregoing Change Order as to the changes, if any, in the contract price specified for each item including any and all supervision costs and other miscellaneous costs relating to the change in work, and as to the extension of time allowed, if any, for completion of the entire work on account of said Change Order. The Contractor agrees to furnish all labor and materials and perform all other necessary work, inclusive of the directly or indirectly related to the approved time extension, required to complete the Change order items. This document will become a supplement of the contract and all provisions will apply hereto. It is understood that the Change Order shall be effective when approved by the District. Accepted: z� ,_ 4 _ /Contractor Date: (Signature) Approved: /District Date: (Signature) "oa>r 9 O oP�tp Replace Existing Broken Valve O��O NOT TO S E L� O On� Normally Open Valve to Remain Open Install New 6"Check Valve \ Normally Closed Valve to Remain Closed Cut New 6"Check Valve and 6"x4" Flanged Tee into Existing 6"Steel Pipe Cut New 6"x 4"Flanged Tee into Existing 6"Steel Pipe a Property line Install New 4"Bypass Connect to New 6"x 4"Flanged Tees O Edge of Pavement J400OSg�J10 9O10Q TRUCKEE DONNER Work Performed at Third Intersection Public Utility District of Northwoods Blvd&Davos Drive 1 Innsbruck Station STOCKHOLM �. HGL=6708 ^"�� I ` JAY ' ---------- UPPER SKIS6.OPE HGL. = 7366 �" ;, < ��" ,Heidi Way PRV Herringbone Station AR,E A r0 BE- CICNVERTED [ ROM DONNER VIEW HFJDC ttVAYPRIE.Ss_SUREZONE LOW K'RES„+4,FRL N DONNER VIEW HYDRO �"�Donner View Station HGL = 6990 NOT TO SCALE TRUCKEE DONNER Area with Low Pressure Complaints Public Utility District