12-10-1990 Council Packet - Laserfiche WebLink

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To: Mayor Grabek & Orono Council Members Prom: Mark E. Bernhardscn, City Administrator' J Date: December 6, 1990 Subject: Well #3 - Change Order Attachment - A - Bonestroo Letter dtd 12/5/90 B - Bonestroo Letter dtd 9/6/90 12490.3 COUNCl fiictTiNG OtClO 1590 CITY OF ORONO Issue - 1. Determination by Council as to the following action; A) What option if any does Cout-'i desire to undertake regarding the small sand problem evident at well star*--up? B) Determine if Council will authorize a change order regarding an allowance for winter-time construction. C) Determine if Council will authorize a change order reduction for the type of electrical service. Introduction - At the Council's September 10th and October 8th meetings, they authorized further development of the well to reduce a potential sand condition at well start-up. This chan- e order was authorized and the additional development done. This development did exhaust the total amount of money authorized with the change order, but the improvement reduced the amount of sand by approximately 99%. Discussion - While there was a substantial reduction in sand, there still is a minor imount at start-up which could cause long-tern- maintenance problems in the system. Proposed were two alternatives to address this and the recommendation is slow start up motor control at the 500 g.p.m. level which will be the initial g.p.m. pump. The estimate of this would be as noted $3, 10.00. Issue #1-B - Because of the delay in development, construction of the physical well house has been delayed until the two time under which they are working under cold weather conditions. In order to authorize for cold weather conditions, it would cost about $4,08000 to do that. Issue #1-C - Electrical service. Given that the NSP was able to make an overhead connection a»' ‘ this does not present a problem and could offset some other