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<br /> c,' "~I <br />Memorandum I <br /> .. <br />December 11, 1997 <br />Page 2 <br /> City staff requested that additional water main valves be added to the project and that I <br /> one water service pipe be up sized from 8 inch diameter to 10 inch diameter to <br /> provide adequate fire flow capability. The cost of these changes are approximately <br /> $3,800.00. I <br /> Lametti & Sons, Inc. proposed to City staff to open cut the utilities under the <br /> Minnesota Commercial railroad crossing in lieu of jack boring as called for in the I <br /> plans. City staff discussed the proposed change with railroad officials and <br /> determined that the change was acceptable as long as the temporary closure of the <br /> crossing was coordinated with the ongoing salt supply operation located east of the I <br /> crossing. The change should result in approximately $18,000.00 in savings to the <br /> City. <br /> The revised plans prepared by Howard R. Green included modifications to storm I <br /> sewer pipe diameters which resulted from the reconfiguration of the storm water <br /> ponding for the Welsh site, These changes were made at the request of Welsh. The I <br /> cost of these changes is approximately $15,000.00. <br /> During the course of constructing the sanitary sewer, the contractor has encountered ~ <br /> large concrete foundation slabs apparently from the old rendering plant. The change <br /> order includes work associated with pulverizing the foundations into pieces small I <br /> enough to be incorporated into the pipe backfill zone. The cost of this work is <br /> approximately $8,500.00 <br /> Recommendation I <br /> The Arden Hills City Engineer recommends Council approve Change Order #2 <br /> thereby increasing the contract amount by $193,726.50 from $730,700.00 to I <br /> $924,426.50. <br /> I <br /> I <br /> I <br /> I <br /> File 37951 0028001 .. <br /> I <br />