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REQUEST FOR <br />COUNCIL ACTION <br />CITY COUNCIL MEETING DATE: <br />NOVEMBER 15, 2010 <br />TITLE: <br />INCREASED CONTINGENCY FOR <br />RECYCLED WATER CONVERSION <br />PROJECT (PROJECT NO. 093215) <br />?,?--.?? <br />CITY MANAGER <br />RECOMMENDED ACTION <br />CLERK OF COUNCIL USE ONLY: <br />LvJ As Recommended <br />? As Amended <br />? Ordinance on 'Ise Reading <br />? Ordinance on 2ntl Reading <br />(] Implementing Resolution <br />Q Set Public Hearing For <br />CONTINUED TO <br />FILE NUMBER <br />Increase the contingency for the contract with Guerrero Backhoe Service, Inc. for the Recycled <br />Water Conversion Project by $100,000 to a total estimated contract amount of $324,526 and <br />authorize the City Manager to execute change orders up to the contingency amount- <br />DISCUSSION <br />On December 7, 2009, the City Council awarded a contract for the Recycled Water Conversion <br />Project to Guerrero Backhoe Service, Inc. in the estimated amount of $195,240 plus a <br />contingency of $29,286 totaling $224,526. Unforeseen field conditions not shown in the contract <br />at Centennial Park have prompted additional work to complete the Water Conversion Project. <br />The existing water supply system at Centennial Park continuously loops throughout the entire <br />park with connections to Godinez High School, the lake, and the soccer fields. Water is <br />provided for daily use in the school and the park, as well as irrigation water for the landscaped <br />areas. To convert the irrigation system from potable water to recycled water, the existing water <br />pipes and apparatus will need to be disconnected and regrouped into two separate systems: <br />potable water for domestic use and recycled water for landscaping. <br />After construction started, it was discovered that the underground piping system was <br />significantly different from what was shown on the plans, which were prepared based on old as- <br />built records. To rectify the situation, exploratory excavations have been performed at several <br />connection points to determine the actual layout of pipes, and plans have been revised based on <br />the result of the investigation. The revisions require additional pipes and equipment to provide <br />separate domestic water and recycled water for each area, and to provide temporary water to <br />the school and the park until the conversion is completed. <br />APPROVED NOV 1 5 2050 2?