Agenda Packets - 1985/10/21 - Laserfiche WebLink

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tom`l thMO TO: Clerk -Administrator and City Council � FROM: Director of Public Works/Community DevelopmeryC,U. DATE: October 11, 1985 /� S1111JECT: WF.1,1. No. 4 As yo may iccal' the Lj '.t awarded the Well No 4 Maintenance Projectto Layne Minnesota in the amount of $14,282.00. Layne Minnesota removed the pump and motor and televised the well. The television inspection indicated that there was probably a leak in the grouting between the 24" diameter casing and the 16" diameter casing at a depth of 2701. We speculated that this potential leak may be the cause of the bad odor in the water from this well. The estimated cost of repairing this potential odor causing leak to meet Minnesota Department of Health standards was $60,000.00. At that time, I proposed that we conduct a test to see if the joint that migh be leaking, in fact, did leak. The cost of conducting this test was approximately $5,000.00 and Layne Minnesota provided me a letter dated June 12, 1985 stating that they would complete the repairs of the pump and motor and conduct the test for a price not to exceed $14,964.00 without further approval. The City Council approved my recommendation to conduct the test for approximately S5,000.U0 and try to save $60,000.00. At that time- we also discussed the possibility of issuing a change order. We decided that a change order was not necessary at that time because there may be some additional work that may need to be done and that one change cyder at the end of the project was the easiest way to go. I am pleased to let you know that we conducted the test and the test showed that the joint aid noL leak and that the City does not have to spend S60,000.00 to repair the joint. However, there were some addit.onal costs that I authorized with the understanding that we wound 'saue a change order Teter. Thn additional costs are outlined under Item No. 3 of Layne Minnesota Company's Invoice N,. 13615 dated October 7, 1985. I approved an increase above the original contract price for tertinq the Potential leap in the amount of $58d.00. 1 approved additional repair on a column pipe for $159.00 and the constriction and installation of a 16" guide for $1,005.00. I approved an additional television inspection to verify that the work was done correctly for an additional $750.00. I also utilized the services of a technical service man to do some work over and above the requirements of Layne Minnesota Company's June 12, 1985 letter for an amo,int of S1,008.00. The last additional item is some additional test pumping in the amount of $175.00.