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HomeMy WebLinkAbout4 Donner Lake Water System r-lum Memorandum To: Board of Directors From: Peter Holzmeister Date: September 28, 2001 Subject: Donner Lake water system a) Status report: Ed Taylor will give a verbal status report at the meeting. b) Financial status report: Mary Chapman is preparing a financial status report so you will know where we stand with the bridge loan and the reimbursement of the money we have spent to date. c) Completion of the Lake intake project: Attached is documentation relating to completion of the lake intake. RECOMMENDATION: I recommend that the Board accept the lake intake project as complete and authorize staff to file to notice of completion with the appropriate agencies. d) Lake intake project close out change order: Attached is a change order to the Lake intake contract RECOMMENDATION: I recommend that the board approve the contract change order. e) Contract change order relating to pipeline replacement: Neil Kaufman is preparing documentation on a proposed change order to the Manuel Brothers contract. As of the writing of this memo I an not sure the paperwork will be in the Board packet. f) Continuation of the emergency action: Again, we need to continue the emergency action relating to Donner Lake water system improvements. t TDPUD MEMORANDUM October 3, 2001 TO: Board of Directors FROM: Ed Taylor , Water System Superintendent SUBJECT: DONNER LAKE INTAKE - CHANGE ORDER 4 2 AGENDA BACKGROUND: The Board of Directors previously awarded under emergency conditions the Contract for construction of the Donner Lake Intake Replacement to F & M Engineering. I am requesting a Change Order to the Contract for issues covered under 10 general items. The additional work was required ether by Lahontan Regional Water Quality Board, high water level in lake, delays because of activities at lake or conditions found at Lake Intake pump house. The bid from F & M Engineering was for the work to be completed during low water time of the year. The project was delayed until early summer when water levels are higher. Item 1: Remobilization after the 41h of July week. F&M is due $927.63 for this delay. Item 2: Installation & Removal of the on-shore stabilization base &wall for excavator staging, including the silt containment stock pile area. High water level in lake required this extra work. F&M is due $6813.75 for this work. Item 3: Additional turbidity boom curtain. High water level in lake required this extra work. F&M is due $2679.50 for this work. Item 4: Hand dredging excavation because of high water level. The high water level in the lake required that an area be hand excavated, this area could not be reach with the equipment. F&M is due $11,212.28 for this work. Item 5: Change vacuum pump to 480v & change pump base. The 120 volt electrical in the building was not adequate to supply the vacuum pump. F&M is due $1917.00 for this work. Item 6: Extra divers time to set blocks in unforeseen problem area where the lake bottom made a sharp angle change. F&M is due $523.25 for this work. Item 7: Extra backf ill & removal of native materials — native material was not suitable for backfill, to fine & caused major turbidity problems. F&M is due $4651 .86 for this work. Item 8: Pump out & haul off turbid lake water within containment area. The turbidity caused by the fine native material would not settle out at the end of the project. The water had to be hauled off site to TTSA for disposal. F&M is due $12,629.26 for this work. Item 9: Pump House piping Modifications. The connection piping to the current system was modified to accommodate additional pumps which will be required to meet the water supply demand when Greenpoint Springs sources is removed from service. F&M is due $3228.78 for this work. Item 10: Delay claim. This is a claim form delay time due to the changes made during the project. F&M is due $1,150.00 for the delay time. RECOMMENDATION: I recommend that the Board authorize Contract Change Order # 2 in the amount of $45,733.31. Attachment-Contract Change Order # 2 ii Change Order Contract Name: DONNER LAKE PIPELINE REPLACEMENT—PHASE 1 —CONTRACT B Contract Change Order No: 2 Ong. Contract Amt. $ 152,700.00 Days NA Date: September 28, 2001 Prev. Apprd Changes $ 15,391.02 Days NA Contractor: F&M Engineering Contractors, Inc. This Change$ 45,733.31 Days NA Revised Contract Amt. $ 213,824.33 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.