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<br />13. Replace two 12" plug valves on existing line to isolate between mixing pumps. <br />14. Seal Water for recirculation pump. <br /> <br />$ 7,531.00 <br />$ 2,354.00 <br /> <br />Purpose of Change Orders: <br />1. Manufacturer suggestion from Vaughan mixing pump shop drawing submittal. Existing recirculation <br />pump does not have check valve; positive head on suction pipe should stop backflow through pump. <br />2. Sealant not shown clearly in plans or described clearly in specifications. <br />3. Problems with proposed temporary piping when mixing system running. <br />4. Gas piping was to be reused. Plant staff determined valve was hard to operate d(.lring construction. <br />5. All penetrations in good condition. <br />6. Existing pipe and fittings in good condition. <br />7. Cover shifted prior to removal and caused concrete cracking. <br />8. Cover shifted prior to removal and caused wedging of the cover. <br />9. Items required for operation and not included in plans. <br />10. Requested by plant staff for proper operation and due to leaks in existing 12" plu~. <br />11. Caulking not required since insulation will cover entire cover. <br />12. Manufacturers recommendation for several fittings ahead of pump seal and on Pl!lmp drain. <br />13. Plates around exterior of cover were larger than originally detailed. The plates e~tended to the <br />building roof and would have held water, thus requiring the gap between building land cover to be <br />built up. <br />14. Valves did not hold and sludge was leaking. <br />15. Pump manufacturer requested several fittings and valves on seal water to recircLllation pump, <br /> <br />Attachments (List documents supporting change): <br />1 . None <br />2. CO-2 <br /> <br />Original Contract Price <br />$609,750.00 <br /> <br />CHANGE IN CONTRACT TIMa: <br />Original Contract Time <br />Substantial Completion: december 17. 2004 <br />Final Completion: May 31,2.05 <br /> <br />CHANGE IN CONTRACT PRICE: <br /> <br />$ 641,249 <br /> <br />Net change from previous Chartlge Orders <br />o Days <br />Contract Time prior to this Charge Order <br />Substantial Completion: Dec~mber 17, 2004 <br />Final Completion: May 31,2' 05 <br />Net Increase (Decrease) of thi~ Change Order <br />-L days for Substantial Completion <br />o days for Final Completion <br />Contract Time with all approve Change Orders <br />Substantial Completion: ecember 17 2004 <br />Final Completion: Ma 31 05 <br /> <br /> <br />Previous Change Orders No. _ to No. _ <br />NONE <br />Contract Price prior to this Change Order <br /> <br />$609,750 <br />Net Increase of this Change Order <br /> <br />$ 31,499 <br />Contract Price with all approved Change Orders <br /> <br />RECOMMENDED: t <br /> <br />BWJJJll ~J1 p )-/ <br />1....-/ <br />Howard R. Green Company <br />EJCDC No. 1910-8-B (1996 Edition <br /> <br />APPROVED: <br /> <br />By <br /> <br />City of Elk River, MN <br /> <br />2 <br />