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- ��. EN HILLS <br />MEMURANDUM <br />. � <br />DATE: August 30, 2010 <br />TO: Honorable Mayor and City Council Members <br />Patrick Klaers, City Administrator <br />FROM: Kristine Giga, Civil Engineer <br />SUBJECT: 2010 Pavement Management Program- Payment #3 <br />� <br />Back�round <br />The City of Arden Hills awarded T.A. Schifsky & Sons, Inc., of North Saint Paul, <br />Minnesota, the 2010 Pavement Management Program Proj ect on May 10, 2010, for a <br />total contract amount of $731,630.59. <br />Discussion <br />This pay request includes work completed through August 13, 2010. The payment is for <br />$163,538.42 and includes sanitary sewer, water main and storm sewer installation, <br />subg�ade p��paration and placement �f a.ggregate base on �ialentine 1��enue; cu�b and <br />gutter construction and concrete driveway restoration on Valentine Court. <br />This pay request also includes Change Order #3. Change Order #3 includes the <br />construction of a thicker roadway section on Valentine Avenue. Similar to the conditions <br />experienced on Valentine Court, the soils on Valentine Avenue consist of clay materials, <br />which became saturated with the significant rain events. Due to the wet conditions, the <br />in-place soils were not achieving the required compaction needed to construct a road. <br />After reviewing the conditions with the soils engineer, Stork Twin City Testing, it was <br />determined that the most time and cost-effective method to prepare the roadway was to <br />remove an additional 2" of the existing soils, and increase the aggregate section from 8" <br />to 10". A geotextile fabric was also placed to provide separation between the subgrade <br />soils and the aggregate base. <br />Change Order #3, $15,991.71, would be funded using PIR funds and special assessments. <br />A 4% contingency was included in calculating the assessment rate, which is <br />approximately $24,540. This change order amount, as well as Change Order #2 approved <br />on July 26, 2010, falls within the contingency. <br />City Council Meeting <br />P:�.Admin\Council�.Agendas & Packet Information�2010\8-30-10 Regular�Packet Information\4B 8-34- <br />l OMemo_201 OPMP_Payment#3 . doc <br />Page 1 of 2 <br />