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DEERE & AULT <br /> • N` U1'1"AN r S 1 h!C! . <br /> August 23, 2007 <br /> Ms. Sasha Charney <br /> Boulder County Parks & Open Space <br /> 5201 St.Vrain Road <br /> Longmont, CO 80503 <br /> Re: Cost Estimate for Proposed Rubicon Gates Installations on St. Vrain Ditch <br /> Headgates <br /> Dear Ms. Charney: <br /> I have been asked to provide information to the St. Vrain Corridor Committee regarding the cost <br /> of installing two Rubicon gates on ditches that divert from St. Vrain Creek. The purpose of the <br /> gates is to be able to control and measure flows past the diversion dams for the benefit of the St. <br /> Vrain Creek fishery. Rubicon gates are unique in their capacity to perform both control and <br /> measurement duties. This cost estimate is based in part on information provided by Rubicon and <br /> in part on our experience with ditch diversion structures. It is my understanding that others will <br /> provide cost estimates for bringing power to the gates and for installing SCADA capability. <br /> • Per Rubicon the cost of each gate is $20,044. They will install the gates and estimate bein g able <br /> to install both gates in one day at a cost of$1,800. Rubicon will also provide training at a cost of <br /> $600 per gate. The total cost for the gates installed and with training is estimated to be$43,088. <br /> Some work will be necessary at each structure to prepare them to receive the Rubicon gate <br /> frames. The work will generally consist of concrete chipping, a small amount of new concrete, <br /> and grouting the frames in place. I believe that the total work for both installations will not <br /> exceed$1 0,000 in labor and materials. I propose to be present during gate installation for a total <br /> of 6 hours during the day representing a cost of$870. With gates, installation and training,and <br /> construction observation, I.estimate the total cost for the project to be$53,958. I recommend a <br /> 15 percent contingency to allow for possible price increases in the gates and for unforeseen <br /> additional work required to prepare the structures. Therefore, I estimate the total budget amount <br /> required to be$62,050. <br /> Sincerely, <br /> DEERE&AULT CONSULT ► S, INC. <br /> W !/f ✓� <br /> Mark A. McLean, P.E. <br /> Principal <br /> • <br /> 600 S.Airport Road,Building A,Suite 205 <br /> Longmont,CO 80503 <br /> Phone: 303-651-1468 Fax: 303-651-1469 <br />