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L <br />LSA Design, Inc. <br />Northwestern Building <br />219 North Second Street <br />Suite 302 <br />Minneapolis, MN 55401 <br />T. 612.339.8729 <br />F. 612.339.7433 <br />www.tsadesigninc.com <br />Planning <br />Architecture <br />Urban Design <br />To: Brian Olson — Dir. of Public Works <br />From: William Fossing, PE — LSA <br />Project: City of Ramsey CMAQ Project (SP 199-080-02) <br />Subject: PR #1 for Deep Foundations <br />Date: September 7, 2011 <br />BACKGROUND <br />The Preliminary Soils Investigation for the Phase II horizontal expansion determined that <br />unsuitable soils existed at a portion of the site at15 to 35 foot depths below existing <br />grades. The City subsequently approved additional borings and Soil Engineering by <br />Braun to provide recommendations for deep foundations to address the unsuitable soils. <br />Copies of the additional borings and the recommended footings to be revised were <br />issued on 8/29/11 (see attached). <br />LSA redesigned the foundations for nine columns and generated a proposal request (PR <br />#1) and issued it on 9/1/11. The General Contractor (Knutson Construction) issued the <br />attached Proposed Change Order #1 dated September 7, 2011 for this work. <br />RECOMMENDATION FOR CHANGE ORDER TO CONTRACT FOR CONSTRUCTION <br />In review of the PCO #1, 1 am recommending the City authorize a Not -To- Exceed <br />Change Order amount of $211,077 to the Contract to Knutson Construction Co. based <br />on the following: <br />1. The attached amount is based on a single bid for the cost of the piling and their <br />installation. Knutson Construction will obtain additional bids for this work and we <br />will adjust the Change Order amount prior to issuing if lower qualified bids are <br />provided. <br />2. Knutson Construction has identified that the concrete pour for level 2 is now <br />scheduled to occur in mid November (11/14) rather than mid October (10/20). <br />For temperatures in the low end of the normal range, insulated blankets and <br />enclosing and heating the underside of the pour may be required. The concrete <br />suppliers will have added costs. The authorized amount includes a not -to -exceed <br />amount of $14,000 for the time and material to address these measures, only if <br />necessary. These costs will be determined at the time of the pour for Level 2. <br />RECOMMENDATION TO AMEND TESTING AND SPECIAL INSPECTIONS <br />The fee for Soils Engineering, Construction Testing and Special Inspection Services by <br />Braun has been previously approved for $55,453. <br />