07-22-1985 Council Packet - Laserfiche WebLink

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TO: Mark Bernhardson, City Administrator FROM: Glenn R. Cook, City Engineer John R. Gerhardson, Public Works Coordinator DATE: July 19, 1985 SUBJECT: Change Order 11 Crystal Bay Sewer Project 85-1 The following change orders are being presented for review and approval. Change order #1 consists of three changes in the project. Item 41 is a time extension of the completion date from October 15, 1985 to December 13, 1985. The reason for the extension of time is because the contractor was unable to start the project until July 1, 1985. There is no cost increase due to the extension of time. We recommend approval of the time extention. Item #2 is A cost increase for relocating the lift station from the south side of Spates Avenue to the north side of Spates Avenue. The contractor has indicated a $5,000 increase in costs due to tighter working conditions. However because we will be removing cost- for paving blocks and tree removal the actual cost increase amou►.,:,, to $3,512. We recommend approval of this amount. Item #3 is a possible pipe size change for approximately 2500 Teet of the project from the lift station at Spates Avenue to the intersection of Lakeview Avenue and Arbor Street. We have been informed that the PCA is recommending increasing the size of that amoun,c of pipe from 8" to 10". PCA has stated that at 0.32% grade is not sufficient and is recommending a 0.40% grade. The estimated cost to lower the pipe to accommodate the increased grade is $32,000. The alternate is to increase the pipe size to 10" which can be placed at a flatter grade. A preliminary estimate for the increase in pipe size was $2,500.00. Originally we were going to recommend approval of the pipe size change but a confirmed amount has indicated the cost for increase in pipe size is not $2,500 but $9,966.59. Therefore we will be discussing with PCA whether or not they will issue a permit for using 8" pipe throughout the entire project. If not we would recommend approval of $9,966.59 increased cost to the project contingent upon PCA denial for using 8" pipe throughout.